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authorKarel Zak2006-12-07 00:25:34 +0100
committerKarel Zak2006-12-07 00:25:34 +0100
commitfd6b7a7ffc50400704beb41d5a23af5f9edb1eed (patch)
tree997c0ca2abc018369babd7da59bcd0afe492068e /disk-utils
parentImported from util-linux-2.5 tarball. (diff)
downloadkernel-qcow2-util-linux-fd6b7a7ffc50400704beb41d5a23af5f9edb1eed.tar.gz
kernel-qcow2-util-linux-fd6b7a7ffc50400704beb41d5a23af5f9edb1eed.tar.xz
kernel-qcow2-util-linux-fd6b7a7ffc50400704beb41d5a23af5f9edb1eed.zip
Imported from util-linux-2.7.1 tarball.
Diffstat (limited to 'disk-utils')
-rw-r--r--disk-utils/Makefile30
-rw-r--r--disk-utils/README.fdisk.alpha16
-rw-r--r--disk-utils/README.fdisk.bsd28
-rw-r--r--disk-utils/bitops.h54
-rw-r--r--disk-utils/cfdisk.c501
-rw-r--r--disk-utils/fdformat.c14
-rw-r--r--disk-utils/fdisk.82
-rw-r--r--disk-utils/fdisk.c59
-rw-r--r--disk-utils/fdisk.h1
-rw-r--r--disk-utils/fdisklabel.c281
-rw-r--r--disk-utils/fdisklabel.h124
-rw-r--r--disk-utils/fsck.minix.816
-rw-r--r--disk-utils/fsck.minix.c572
-rw-r--r--disk-utils/llseek.c83
-rw-r--r--disk-utils/mkfs.c8
-rw-r--r--disk-utils/mkfs.minix.842
-rw-r--r--disk-utils/mkfs.minix.c438
-rw-r--r--disk-utils/mkswap.82
-rw-r--r--disk-utils/mkswap.c28
-rw-r--r--disk-utils/setfdprm.c19
-rw-r--r--disk-utils/sfdisk.8497
-rw-r--r--disk-utils/sfdisk.c2712
-rw-r--r--disk-utils/sfdisk.examples264
23 files changed, 5057 insertions, 734 deletions
diff --git a/disk-utils/Makefile b/disk-utils/Makefile
index 739d12834..fac3134ba 100644
--- a/disk-utils/Makefile
+++ b/disk-utils/Makefile
@@ -8,17 +8,20 @@ include ../MCONFIG
# Where to put man pages?
-MAN8= cfdisk.8 fdformat.8 fsck.minix.8 \
- mkfs.8 mkfs.minix.8 mkswap.8 setfdprm.8
+MAN8= fdformat.8 mkswap.8 setfdprm.8
-MAN8.FDISK= fdisk.8
+ifneq "$(CPU)" "sparc"
+MAN8:=$(MAN8) fdisk.8 cfdisk.8 sfdisk.8 fsck.minix.8 mkfs.8 mkfs.minix.8
+endif
# Where to put binaries?
# See the "install" rule for the links. . .
-SBIN= cfdisk fsck.minix mkfs mkfs.minix mkswap
+SBIN= mkfs mkswap
-SBIN.FDISK= fdisk
+ifneq "$(CPU)" "sparc"
+SBIN:=$(SBIN) fdisk cfdisk sfdisk fsck.minix mkfs.minix
+endif
USRBIN= fdformat setfdprm
@@ -26,27 +29,30 @@ USRBIN= fdformat setfdprm
ETC= fdprm
-ifeq "$(HAVE_FDISK)" "no"
-SBIN:=$(SBIN) $(SBIN.FDISK)
-MAN8:=$(MAN8) $(MAN8.FDISK)
-endif
-
all: $(SBIN) $(USRBIN)
cfdisk: cfdisk.o llseek.o
- $(CC) $(LDFLAGS) $^ -o $@ -lcurses -ltermcap -lm
+ $(CC) $(LDFLAGS) $^ -o $@ $(LIBCURSES) -lm
+
+# not installed by default
+activate: sfdisk
+ rm -f activate
+ ln -s sfdisk activate
# Rules for everything else
fdformat: fdformat.o
fdisk: fdisk.o fdisklabel.o llseek.o
+sfdisk: sfdisk.o
fsck.minix: fsck.minix.o
+fsck.minix.o: fsck.minix.c bitops.h
mkfs: mkfs.o
mkfs.minix: mkfs.minix.o
+mkfs.minix.o: mkfs.minix.c bitops.h
mkswap: mkswap.o
setfdprm: setfdprm.o
fdisk.o: fdisk.c fdisk.h
-fdisklabel.o: fdisklabel.c fdisk.h
+fdisklabel.o: fdisklabel.c fdisk.h fdisklabel.h
install: all
$(INSTALLDIR) $(SBINDIR) $(USRBINDIR) $(ETCDIR)
diff --git a/disk-utils/README.fdisk.alpha b/disk-utils/README.fdisk.alpha
deleted file mode 100644
index da6e87342..000000000
--- a/disk-utils/README.fdisk.alpha
+++ /dev/null
@@ -1,16 +0,0 @@
-
-There are some things which have to be done for the alpha version:
-- LABELSECTOR, LABELOFFSET, BBSIZE & SBSIZE are undefined in fdisklabel.h
- These values are different for different versions of NetBSD and I don't
- have the alpha source tree for NetBSD yet (It's not in 1.0 but in current).
- I guess Linux/Alpha uses the same values.
-- The alpha fdisklabel.c requires a few functions from fdisk.c.
- ("make test" shows the undefined symbols when fdisk.c is missing)
- All the other functions/variables shouldn't be declared. I didn't do
- that because I didn't want to change much in fdisk.c.
-- The disklabel in fdisklabel.c is the NetBSD disklabel which might
- differ from the Linux/Alpha disklabel in some parts.
-- bselect () should be called from main () immediately. Under Linux/Alpha
- it's the main menu and not a submenu.
-
-fasten@informatik.uni-bonn.de
diff --git a/disk-utils/README.fdisk.bsd b/disk-utils/README.fdisk.bsd
deleted file mode 100644
index 705df90f8..000000000
--- a/disk-utils/README.fdisk.bsd
+++ /dev/null
@@ -1,28 +0,0 @@
-
-All changes in fdisk.c are marked with this comment: /* bf */
-
-I added some explanatory comments to make it easier to see what
-changed and why. You'll probably want to remove them.
-
-There's a function sync_disks() in fdisklabel.c which could be called
-from write_table() in fdisk.c (line 1216) (and be moved to fdisk.c)
-to save a few bytes.
-
-There's a function edit_int() in fdisklabel.c which I added because read_int()
-had no default value. In fdisk v2.0d it has so edit_int could be replaces by
-read_int(). The function which uses edit_int() (bsd_edit_disklabel ()) is a
-bit crufty anyhow:
-- The disklabel contains some values which are probably meaningless for IDE or
- SCSI drives, I made them editable but I don't know any sensible range of
- values (bad for read_int()). (interleave, trackskew, cylskew)
-- I made the values secsize/nsectors/ntracks/ncylinders editable for Linux/Alpha
- but not for Linux/i386 because under Linux/i386 the disklabel is inside a
- DOS partition so the disklabel was written by an OS which got along with the
- disk and should have left the correct values there.
-
-I've put the BSD copyright (which applies to fdisklabel.h and
-alpha_bootblock_checksum, bsd_dkcksum, bsd_print_disklabel in fdisklabel.c)
-into a separate man page. This way all Linux versions of BSD programs can refer
-to ths bsd.<n> man page.
-
-fasten@informatik.uni-bonn.de
diff --git a/disk-utils/bitops.h b/disk-utils/bitops.h
new file mode 100644
index 000000000..270dc2d8f
--- /dev/null
+++ b/disk-utils/bitops.h
@@ -0,0 +1,54 @@
+#ifdef __i386__
+
+#define bitop(name,op) \
+static inline int name(char * addr,unsigned int nr) \
+{ \
+int __res; \
+__asm__ __volatile__("bt" op " %1,%2; adcl $0,%0" \
+:"=g" (__res) \
+:"r" (nr),"m" (*(addr)),"0" (0)); \
+return __res; \
+}
+
+bitop(bit,"")
+bitop(setbit,"s")
+bitop(clrbit,"r")
+
+#elif defined(__mc68000__)
+
+#define bitop(name,op) \
+static inline int name (char *addr, unsigned int nr) \
+{ \
+ char __res; \
+ __asm__ __volatile__("bf" op " %2@{%1:#1}; sne %0" \
+ : "=d" (__res) \
+ : "d" (nr ^ 15), "a" (addr)); \
+ return __res != 0; \
+}
+
+bitop (bit, "tst")
+bitop (setbit, "set")
+bitop (clrbit, "clr")
+
+#else
+static inline int bit(char * addr,unsigned int nr)
+{
+ return (addr[nr >> 3] & (1<<(nr & 7))) != 0;
+}
+
+static inline int setbit(char * addr,unsigned int nr)
+{
+ int __res = bit(addr, nr);
+ addr[nr >> 3] |= (1<<(nr & 7));
+ return __res != 0; \
+}
+
+static inline int clrbit(char * addr,unsigned int nr)
+{
+ int __res = bit(addr, nr);
+ addr[nr >> 3] &= ~(1<<(nr & 7));
+ return __res != 0;
+}
+
+#endif
+
diff --git a/disk-utils/cfdisk.c b/disk-utils/cfdisk.c
index beb46e508..1b87aae79 100644
--- a/disk-utils/cfdisk.c
+++ b/disk-utils/cfdisk.c
@@ -29,6 +29,7 @@
* >2GB patches: Sat Feb 11 09:08:10 1995, faith@cs.unc.edu
* Prettier menus: Sat Feb 11 09:08:25 1995, Janne Kukonlehto
* <jtklehto@stekt.oulu.fi>
+ * Versions 0.8e-h: aeb@cwi.nl
*
****************************************************************************/
@@ -44,6 +45,7 @@
#include <signal.h>
#include <math.h>
#include <string.h>
+#include <sys/stat.h>
#include <sys/ioctl.h>
#include <linux/genhd.h>
#include <linux/hdreg.h>
@@ -55,12 +57,10 @@ typedef long long ext2_loff_t;
typedef long ext2_loff_t;
#endif
-extern ext2_loff_t ext2_llseek(unsigned int fd,
- ext2_loff_t offset,
+extern ext2_loff_t ext2_llseek(unsigned int fd, ext2_loff_t offset,
unsigned int origin);
-
-#define VERSION "0.8d BETA (>2GB)"
+#define VERSION "0.8i"
#define DEFAULT_DEVICE "/dev/hda"
#define ALTERNATE_DEVICE "/dev/sda"
@@ -79,7 +79,8 @@ extern ext2_loff_t ext2_llseek(unsigned int fd,
#define UNUSABLE -1
#define FREE_SPACE 0x00
-#define EXTENDED 0x05
+#define DOS_EXTENDED 0x05
+#define LINUX_EXTENDED 0x85
#define LINUX_MINIX 0x81
#define LINUX_SWAP 0x82
#define LINUX 0x83
@@ -107,6 +108,7 @@ extern ext2_loff_t ext2_llseek(unsigned int fd,
#define BAD_CYLINDERS "Illegal cylinders value"
#define BAD_HEADS "Illegal heads value"
#define BAD_SECTORS "Illegal sectors value"
+#define READONLY_WARN "Opened disk read-only - you have no permission to write"
#define WRITE_WARN "Warning!! This may destroy data on your disk!"
#define YES_NO "Please enter `yes' or `no'"
#define WRITING_PART "Writing partition table to disk..."
@@ -155,6 +157,11 @@ extern ext2_loff_t ext2_llseek(unsigned int fd,
s |= (sector >> 2) & 0xC0;\
}
+#define is_extended(x) ((x) == DOS_EXTENDED || (x) == LINUX_EXTENDED)
+
+/* we might also want to recognise 0xe and 0xf */
+#define is_dos_partition(x) ((x) == 1 || (x) == 4 || (x) == 6)
+
#define ALIGNMENT 2
typedef union {
struct {
@@ -176,6 +183,8 @@ typedef struct {
int flags; /* active == 0x80 */
int id; /* filesystem type */
int num; /* number of partition -- primary vs. logical */
+#define LABELSZ 11
+ char dos_label[LABELSZ+1];
} partition_info;
char *disk_device = DEFAULT_DEVICE;
@@ -185,6 +194,8 @@ int sectors = 0;
int cylinders = 0;
int changed = FALSE;
int opened = FALSE;
+int opentype;
+int curses_started = 0;
partition_info p_info[MAXIMUM_PARTS];
partition_info ext_info;
@@ -227,12 +238,20 @@ char *partition_type[NUM_PART_TYPES] = {
[LINUX_SWAP] = "Linux Swap",
[LINUX] = "Linux",
[FREE_SPACE] = "Free Space",
- [EXTENDED] = "Extended",
- [0x01] = "DOS 12-bit FAT",
- [0x04] = "DOS 16-bit < 32Mb",
- [0x06] = "DOS 16-bit >=32Mb",
- [0x07] = "OS/2 HPFS",
+ [DOS_EXTENDED]= "Extended",
+ [LINUX_EXTENDED] = "Linux extended",
+ [0x01] = "DOS FAT12",
+ [0x04] = "DOS FAT16",
+ [0x06] = "DOS FAT16 (big)",
+ [0x07] = "OS/2 HPFS or NTFS",
[0x0A] = "OS/2 Boot Manager",
+ [0x0B] = "Win95 FAT32",
+ [0x0C] = "Win95 FAT32 (LBA)",
+ [0x0E] = "Win95 FAT16 (LBA)",
+ [0x0F] = "Win95 Extended (LBA)",
+ [0x11] = "Hidden DOS FAT12",
+ [0x14] = "Hidden DOS FAT16",
+ [0x16] = "Hidden DOS FAT16 (big)",
[0xA5] = "BSD/386",
/* The rest of these are taken from A. V. Le Blanc's (LeBlanc@mcc.ac.uk)
@@ -279,7 +298,6 @@ void fdexit(int ret)
"page for additional information.\n" );
}
-
exit(ret);
}
@@ -346,7 +364,7 @@ void clear_warning(void)
{
int i;
- if (!warning_last_time)
+ if (!curses_started || !warning_last_time)
return;
move(WARNING_START,0);
@@ -358,37 +376,56 @@ void clear_warning(void)
void print_warning(char *s)
{
- mvaddstr(WARNING_START, (COLS-strlen(s))/2, s);
- putchar(BELL); /* CTRL-G */
+ if (!curses_started) {
+ fprintf(stderr, "%s\n", s);
+ } else {
+ mvaddstr(WARNING_START, (COLS-strlen(s))/2, s);
+ putchar(BELL); /* CTRL-G */
- warning_last_time = TRUE;
+ warning_last_time = TRUE;
+ }
}
+void die_x(int ret);
+
void fatal(char *s)
{
char str[LINE_LENGTH];
- sprintf(str, "FATAL ERROR: %s", s);
- mvaddstr(WARNING_START, (COLS-strlen(str))/2, str);
- sprintf(str, "Press any key to exit fdisk");
- mvaddstr(WARNING_START+1, (COLS-strlen(str))/2, str);
- putchar(BELL); /* CTRL-G */
-
- refresh();
+ if (curses_started) {
+ sprintf(str, "FATAL ERROR: %s", s);
+ mvaddstr(WARNING_START, (COLS-strlen(str))/2, str);
+ sprintf(str, "Press any key to exit fdisk");
+ mvaddstr(WARNING_START+1, (COLS-strlen(str))/2, str);
+ putchar(BELL); /* CTRL-G */
+ refresh();
+ (void)getch();
+ die_x(1);
+ } else {
+ fprintf(stderr, "FATAL ERROR: %s\n", s);
+ exit(1);
+ }
+}
- (void)getch();
+void die(int dummy)
+{
+ die_x(0);
+}
+void die_x(int ret)
+{
signal(SIGINT, old_SIGINT);
signal(SIGTERM, old_SIGTERM);
mvcur(0, COLS-1, LINES-1, 0);
nl();
endwin();
- fdexit(1);
+ printf("\n");
+ fdexit(ret);
}
void read_sector(char *buffer, int sect_num)
{
- if (ext2_llseek(fd, sect_num*SECTOR_SIZE, SEEK_SET) < 0)
+ if (ext2_llseek(fd, ((ext2_loff_t) sect_num)*SECTOR_SIZE, SEEK_SET) < 0)
fatal(BAD_SEEK);
if (read(fd, buffer, SECTOR_SIZE) != SECTOR_SIZE)
fatal(BAD_READ);
@@ -396,12 +433,30 @@ void read_sector(char *buffer, int sect_num)
void write_sector(char *buffer, int sect_num)
{
- if (ext2_llseek(fd, sect_num*SECTOR_SIZE, SEEK_SET) < 0)
+ if (ext2_llseek(fd, ((ext2_loff_t) sect_num)*SECTOR_SIZE, SEEK_SET) < 0)
fatal(BAD_SEEK);
if (write(fd, buffer, SECTOR_SIZE) != SECTOR_SIZE)
fatal(BAD_WRITE);
}
+void get_dos_label(int i)
+{
+ char label[LABELSZ+1];
+ ext2_loff_t offset;
+ int j;
+
+ offset = ((ext2_loff_t) p_info[i].first_sector + p_info[i].offset)
+ * SECTOR_SIZE + 43;
+ if (ext2_llseek(fd, offset, SEEK_SET) == offset
+ && read(fd, &label, LABELSZ) == LABELSZ) {
+ for(j=0; j<LABELSZ; j++)
+ if(!isascii(label[j]))
+ label[j] = 0;
+ label[LABELSZ] = 0;
+ strcpy(p_info[i].dos_label, label);
+ }
+}
+
void check_part_info(void)
{
int i, pri = 0, log = 0;
@@ -411,7 +466,7 @@ void check_part_info(void)
pri++;
else if (p_info[i].id > 0 && IS_LOGICAL(p_info[i].num))
log++;
- if (ext_info.id == EXTENDED)
+ if (is_extended(ext_info.id))
if (log > 0)
pri++;
else {
@@ -423,10 +478,10 @@ void check_part_info(void)
ext_info.num = PRIMARY;
}
- if (pri >= 4)
+ if (pri >= 4) {
for (i = 0; i < num_parts; i++)
if (p_info[i].id == FREE_SPACE || p_info[i].id == UNUSABLE)
- if (ext_info.id == EXTENDED)
+ if (is_extended(ext_info.id))
if (p_info[i].first_sector >= ext_info.first_sector &&
p_info[i].last_sector <= ext_info.last_sector) {
p_info[i].id = FREE_SPACE;
@@ -447,16 +502,16 @@ void check_part_info(void)
p_info[i].num = LOGICAL;
} else
p_info[i].id = UNUSABLE;
- else /* if (ext_info.id != EXTENDED) */
+ else /* if (!is_extended(ext_info.id)) */
p_info[i].id = UNUSABLE;
else /* if (p_info[i].id > 0) */
while (0); /* Leave these alone */
- else /* if (pri < 4) */
+ } else { /* if (pri < 4) */
for (i = 0; i < num_parts; i++) {
if (p_info[i].id == UNUSABLE)
p_info[i].id = FREE_SPACE;
if (p_info[i].id == FREE_SPACE)
- if (ext_info.id == EXTENDED)
+ if (is_extended(ext_info.id))
if (p_info[i].first_sector >= ext_info.first_sector &&
p_info[i].last_sector <= ext_info.last_sector)
p_info[i].num = LOGICAL;
@@ -474,11 +529,12 @@ void check_part_info(void)
p_info[i].num = PRI_OR_LOG;
else
p_info[i].num = PRIMARY;
- else /* if (ext_info.id != EXTENDED) */
+ else /* if (!is_extended(ext_info.id)) */
p_info[i].num = PRI_OR_LOG;
else /* if (p_info[i].id > 0) */
while (0); /* Leave these alone */
}
+ }
}
void remove_part(int i)
@@ -491,8 +547,7 @@ void remove_part(int i)
num_parts--;
}
-void insert_part(int i, int num, int id, int flags, int first, int last,
- int offset)
+void insert_empty_part(int i, int first, int last)
{
int p;
@@ -501,10 +556,11 @@ void insert_part(int i, int num, int id, int flags, int first, int last,
p_info[i].first_sector = first;
p_info[i].last_sector = last;
- p_info[i].offset = offset;
- p_info[i].flags = flags;
- p_info[i].id = id;
- p_info[i].num = num;
+ p_info[i].offset = 0;
+ p_info[i].flags = 0;
+ p_info[i].id = FREE_SPACE;
+ p_info[i].num = PRI_OR_LOG;
+ p_info[i].dos_label[0] = 0;
num_parts++;
}
@@ -548,8 +604,10 @@ void del_part(int i)
* last logical drive; and if there are any other logical drives
* then renumber the ones after "num".
*/
- if (i == 0 || (i > 0 && IS_PRIMARY(p_info[i-1].num)))
+ if (i == 0 || (i > 0 && IS_PRIMARY(p_info[i-1].num))) {
ext_info.first_sector = p_info[i].last_sector + 1;
+ ext_info.offset = 0;
+ }
if (i == num_parts-1 ||
(i < num_parts-1 && IS_PRIMARY(p_info[i+1].num)))
ext_info.last_sector = p_info[i].first_sector - 1;
@@ -562,7 +620,8 @@ void del_part(int i)
check_part_info();
}
-int add_part(int num, int id, int flags, int first, int last, int offset)
+int add_part(int num, int id, int flags, int first, int last, int offset,
+ int want_label)
{
int i, pri = 0, log = 0;
@@ -570,45 +629,51 @@ int add_part(int num, int id, int flags, int first, int last, int offset)
first < 0 ||
first >= cylinders*heads*sectors ||
last < 0 ||
- last >= cylinders*heads*sectors)
- return -1;
+ last >= cylinders*heads*sectors) {
+ return -1; /* bad start or end */
+ }
for (i = 0; i < num_parts; i++)
if (p_info[i].id > 0 && IS_PRIMARY(p_info[i].num))
pri++;
else if (p_info[i].id > 0 && IS_LOGICAL(p_info[i].num))
log++;
- if (ext_info.id == EXTENDED && log > 0)
+ if (is_extended(ext_info.id) && log > 0)
pri++;
if (IS_PRIMARY(num))
- if (pri >= 4)
- return -1;
- else
+ if (pri >= 4) {
+ return -1; /* no room for more */
+ } else
pri++;
- for (i = 0; p_info[i].last_sector < first; i++);
+ for (i = 0; i < num_parts && p_info[i].last_sector < first; i++);
- if (p_info[i].id != FREE_SPACE || last > p_info[i].last_sector)
+ if (i == num_parts || p_info[i].id != FREE_SPACE
+ || last > p_info[i].last_sector) {
return -1;
+ }
- if (id == EXTENDED)
- if (ext_info.id != FREE_SPACE)
- return -1;
+ if (is_extended(id)) {
+ if (ext_info.id != FREE_SPACE) {
+ return -1; /* second extended */
+ }
else if (IS_PRIMARY(num)) {
ext_info.first_sector = first;
ext_info.last_sector = last;
ext_info.offset = offset;
ext_info.flags = flags;
- ext_info.id = EXTENDED;
+ ext_info.id = id;
ext_info.num = num;
-
+ ext_info.dos_label[0] = 0;
return 0;
- } else
- return -1;
+ } else {
+ return -1; /* explicit extended logical */
+ }
+ }
if (IS_LOGICAL(num)) {
- if (ext_info.id != EXTENDED) {
+ if (!is_extended(ext_info.id)) {
print_warning("!!!! Internal error creating logical "
"drive with no extended partition !!!!");
} else {
@@ -626,29 +691,29 @@ int add_part(int num, int id, int flags, int first, int last, int offset)
if (first == 0) {
ext_info.first_sector = 0;
ext_info.offset = first = offset;
- } else
+ } else {
ext_info.first_sector = first;
+ }
}
} else if (last > ext_info.last_sector) {
if (i > 0 && IS_PRIMARY(p_info[i-1].num)) {
print_warning(TWO_EXTENDEDS);
return -1;
- } else
+ } else {
ext_info.last_sector = last;
+ }
}
}
}
if (first != p_info[i].first_sector &&
!(IS_LOGICAL(num) && first == offset)) {
- insert_part(i, PRI_OR_LOG, FREE_SPACE, 0,
- p_info[i].first_sector, first-1, 0);
+ insert_empty_part(i, p_info[i].first_sector, first-1);
i++;
}
if (last != p_info[i].last_sector)
- insert_part(i+1, PRI_OR_LOG, FREE_SPACE, 0,
- last+1, p_info[i].last_sector, 0);
+ insert_empty_part(i+1, last+1, p_info[i].last_sector);
p_info[i].first_sector = first;
p_info[i].last_sector = last;
@@ -656,6 +721,9 @@ int add_part(int num, int id, int flags, int first, int last, int offset)
p_info[i].flags = flags;
p_info[i].id = id;
p_info[i].num = num;
+ p_info[i].dos_label[0] = 0;
+ if (want_label && is_dos_partition(id))
+ get_dos_label(i);
check_part_info();
@@ -668,7 +736,7 @@ int find_primary(void)
while (cur < num_parts && IS_PRIMARY(num))
if ((p_info[cur].id > 0 && p_info[cur].num == num) ||
- (ext_info.id == EXTENDED && ext_info.num == num)) {
+ (is_extended(ext_info.id) && ext_info.num == num)) {
num++;
cur = 0;
} else
@@ -1046,7 +1114,7 @@ void new_part(int i)
return;
}
- if (IS_LOGICAL(num) && ext_info.id != EXTENDED) {
+ if (IS_LOGICAL(num) && !is_extended(ext_info.id)) {
/* We want to add a logical partition, but need to create an
* extended partition first.
*/
@@ -1054,8 +1122,9 @@ void new_part(int i)
print_warning(NEED_EXT);
return;
}
- (void)add_part(ext, EXTENDED, 0, first, last,
- (first == 0 ? sectors : 0));
+ (void) add_part(ext, DOS_EXTENDED, 0, first, last,
+ (first == 0 ? sectors : 0), 0);
+ first = ext_info.first_sector + ext_info.offset;
}
if (IS_LOGICAL(num))
@@ -1065,7 +1134,7 @@ void new_part(int i)
if (first == 0 || IS_LOGICAL(num))
offset = sectors;
- (void)add_part(num, id, flags, first, last, offset);
+ (void) add_part(num, id, flags, first, last, offset, 0);
}
void clear_p_info(void)
@@ -1093,8 +1162,20 @@ void fill_p_info(void)
partition_table buffer;
partition_info tmp_ext = { 0, 0, 0, 0, FREE_SPACE, PRIMARY };
- if ((fd = open(disk_device, O_RDWR)) < 0)
- fatal(BAD_OPEN);
+ if ((fd = open(disk_device, O_RDWR)) < 0) {
+ if ((fd = open(disk_device, O_RDONLY)) < 0)
+ fatal(BAD_OPEN);
+ opentype = O_RDONLY;
+ print_warning(READONLY_WARN);
+ if (curses_started) {
+ refresh();
+ getch();
+ clear_warning();
+ }
+ } else
+ opentype = O_RDWR;
+ opened = TRUE;
+
read_sector(buffer.c.b, 0);
if (!ioctl(fd, HDIO_GETGEO, &geometry)) {
@@ -1113,52 +1194,53 @@ void fill_p_info(void)
if (!zero_table) {
for (i = 0; i < 4; i++) {
+ int bs = buffer.p.part[i].start_sect;
+
if (buffer.p.part[i].sys_ind > 0 &&
add_part(i,
buffer.p.part[i].sys_ind,
buffer.p.part[i].boot_ind,
- ((buffer.p.part[i].start_sect <= sectors) ?
- 0 : buffer.p.part[i].start_sect),
+ ((bs <= sectors) ? 0 : bs),
buffer.p.part[i].start_sect +
buffer.p.part[i].nr_sects - 1,
- ((buffer.p.part[i].start_sect <= sectors) ?
- buffer.p.part[i].start_sect : 0))) {
+ ((bs <= sectors) ? bs : 0),
+ 1)) {
fatal(BAD_PRIMARY);
}
- if (buffer.p.part[i].sys_ind == EXTENDED)
+ if (is_extended(buffer.p.part[i].sys_ind))
tmp_ext = ext_info;
}
- if (tmp_ext.id == EXTENDED) {
+ if (is_extended(tmp_ext.id)) {
ext_info = tmp_ext;
- logical_sectors[logical] = ext_info.first_sector;
+ logical_sectors[logical] =
+ ext_info.first_sector + ext_info.offset;
read_sector(buffer.c.b, logical_sectors[logical++]);
i = 4;
do {
for (p = 0;
p < 4 && (!buffer.p.part[p].sys_ind ||
- buffer.p.part[p].sys_ind == 5);
+ is_extended(buffer.p.part[p].sys_ind));
p++);
- if (p > 3)
- fatal(BAD_LOGICAL);
- if (add_part(i++,
+ if (p < 4 && add_part(i++,
buffer.p.part[p].sys_ind,
buffer.p.part[p].boot_ind,
logical_sectors[logical-1],
logical_sectors[logical-1] +
buffer.p.part[p].start_sect +
buffer.p.part[p].nr_sects - 1,
- buffer.p.part[p].start_sect)) {
+ buffer.p.part[p].start_sect,
+ 1)) {
fatal(BAD_LOGICAL);
}
for (p = 0;
- p < 4 && buffer.p.part[p].sys_ind != 5;
+ p < 4 && !is_extended(buffer.p.part[p].sys_ind);
p++);
if (p < 4) {
- logical_sectors[logical] =
- ext_info.first_sector + buffer.p.part[p].start_sect;
+ logical_sectors[logical] = ext_info.first_sector
+ + ext_info.offset + buffer.p.part[p].start_sect;
read_sector(buffer.c.b, logical_sectors[logical++]);
}
} while (p < 4 && logical < MAXIMUM_PARTS-4);
@@ -1197,7 +1279,7 @@ void fill_primary_table(partition_table *buffer)
if (IS_PRIMARY(p_info[i].num))
fill_part_table(&(buffer->p.part[p_info[i].num]), &(p_info[i]));
- if (ext_info.id == EXTENDED)
+ if (is_extended(ext_info.id))
fill_part_table(&(buffer->p.part[ext_info.num]), &ext_info);
buffer->p.flag = PART_TABLE_FLAG;
@@ -1228,8 +1310,8 @@ void fill_logical_table(partition_table *buffer, partition_info *pi)
pi = &(p_info[i]);
p->boot_ind = 0;
- p->sys_ind = 5;
- p->start_sect = pi->first_sector - ext_info.first_sector;
+ p->sys_ind = DOS_EXTENDED;
+ p->start_sect = pi->first_sector - ext_info.first_sector - ext_info.offset;
p->nr_sects = pi->last_sector - pi->first_sector + 1;
sects = ((pi->first_sector/(sectors*heads) > 1023) ?
heads*sectors*1024 - 1 : pi->first_sector);
@@ -1246,62 +1328,78 @@ void write_part_table(void)
{
int i, done = FALSE, len;
partition_table buffer;
+ struct stat s;
+ int is_bdev;
char response[LINE_LENGTH];
- print_warning(WRITE_WARN);
-
- while (!done) {
- mvaddstr(COMMAND_LINE_Y, COMMAND_LINE_X,
- "Are you sure you want write the partition table to disk? (yes or no): ");
-
- len = get_string(response, LINE_LENGTH, NULL);
-
- clear_warning();
+ if (opentype == O_RDONLY) {
+ print_warning(READONLY_WARN);
+ refresh();
+ getch();
+ clear_warning();
+ return;
+ }
- if (len == GS_ESCAPE)
- return;
- else if (len == 2 &&
- toupper(response[0]) == 'N' &&
- toupper(response[1]) == 'O') {
- print_warning(NO_WRITE);
- return;
- } else if (len == 3 &&
- toupper(response[0]) == 'Y' &&
- toupper(response[1]) == 'E' &&
- toupper(response[2]) == 'S')
- done = TRUE;
- else
- print_warning(YES_NO);
+ is_bdev = 0;
+ if(fstat(fd, &s) == 0 && S_ISBLK(s.st_mode))
+ is_bdev = 1;
+
+ if (is_bdev) {
+ print_warning(WRITE_WARN);
+
+ while (!done) {
+ mvaddstr(COMMAND_LINE_Y, COMMAND_LINE_X,
+ "Are you sure you want write the partition table "
+ "to disk? (yes or no): ");
+ len = get_string(response, LINE_LENGTH, NULL);
+ clear_warning();
+ if (len == GS_ESCAPE)
+ return;
+ else if (len == 2 &&
+ toupper(response[0]) == 'N' &&
+ toupper(response[1]) == 'O') {
+ print_warning(NO_WRITE);
+ return;
+ } else if (len == 3 &&
+ toupper(response[0]) == 'Y' &&
+ toupper(response[1]) == 'E' &&
+ toupper(response[2]) == 'S')
+ done = TRUE;
+ else
+ print_warning(YES_NO);
+ }
+
+ clear_warning();
+ print_warning(WRITING_PART);
+ refresh();
}
- clear_warning();
- print_warning(WRITING_PART);
- refresh();
-
read_sector(buffer.c.b, 0);
fill_primary_table(&buffer);
write_sector(buffer.c.b, 0);
for (i = 0; i < num_parts; i++)
if (IS_LOGICAL(p_info[i].num)) {
- /* Read the extended partition table from disk ??? KEM */
read_sector(buffer.c.b, p_info[i].first_sector);
fill_logical_table(&buffer, &(p_info[i]));
write_sector(buffer.c.b, p_info[i].first_sector);
}
- sync();
- sleep(2);
- if (!ioctl(fd,BLKRRPART))
- changed = TRUE;
- sync();
- sleep(4);
-
- clear_warning();
- if (changed)
- print_warning(YES_WRITE);
- else
- print_warning(RRPART_FAILED);
+ if (is_bdev) {
+ sync();
+ sleep(2);
+ if (!ioctl(fd,BLKRRPART))
+ changed = TRUE;
+ sync();
+ sleep(4);
+
+ clear_warning();
+ if (changed)
+ print_warning(YES_WRITE);
+ else
+ print_warning(RRPART_FAILED);
+ } else
+ print_warning(YES_WRITE);
}
void fp_printf(FILE *fp, char *format, ...)
@@ -1380,12 +1478,14 @@ void print_raw_table(void)
fp_printf(fp, "Disk Drive: %s\n", disk_device);
+ fp_printf(fp, "Sector 0:\n");
read_sector(buffer.c.b, 0);
fill_primary_table(&buffer);
print_file_buffer(fp, buffer.c.b);
for (i = 0; i < num_parts; i++)
if (IS_LOGICAL(p_info[i].num)) {
+ fp_printf(fp, "Sector %d:\n", p_info[i].first_sector);
read_sector(buffer.c.b, p_info[i].first_sector);
fill_logical_table(&buffer, &(p_info[i]));
print_file_buffer(fp, buffer.c.b);
@@ -1402,7 +1502,7 @@ void print_raw_table(void)
void print_p_info_entry(FILE *fp, partition_info *p)
{
int size;
- char part_str[21];
+ char part_str[40];
if (p->id == UNUSABLE)
fp_printf(fp, " None ");
@@ -1418,45 +1518,39 @@ void print_p_info_entry(FILE *fp, partition_info *p)
fp_printf(fp, " ");
- fp_printf(fp, "%7d%c", p->first_sector,
+ fp_printf(fp, "%8d%c", p->first_sector,
((p->first_sector/(sectors*heads)) !=
((float)p->first_sector/(sectors*heads)) ?
'*' : ' '));
- fp_printf(fp, " ");
-
- fp_printf(fp, "%7d%c", p->last_sector,
+ fp_printf(fp, "%8d%c", p->last_sector,
(((p->last_sector+1)/(sectors*heads)) !=
((float)(p->last_sector+1)/(sectors*heads)) ?
'*' : ' '));
- fp_printf(fp, " ");
-
- fp_printf(fp, "%6d%c", p->offset,
+ fp_printf(fp, "%7d%c", p->offset,
((((p->first_sector == 0 || IS_LOGICAL(p->num)) &&
(p->offset != sectors)) ||
(p->first_sector != 0 && IS_PRIMARY(p->num) &&
p->offset != 0)) ?
'#' : ' '));
- fp_printf(fp, " ");
-
size = p->last_sector - p->first_sector + 1;
- fp_printf(fp, "%7d%c", size,
+ fp_printf(fp, "%8d%c", size,
((size/(sectors*heads)) != ((float)size/(sectors*heads)) ?
'*' : ' '));
fp_printf(fp, " ");
if (p->id == UNUSABLE)
- sprintf(part_str, "%.16s", "Unusable");
+ sprintf(part_str, "%.17s", "Unusable");
else if (p->id == FREE_SPACE)
- sprintf(part_str, "%.16s", "Free Space");
+ sprintf(part_str, "%.17s", "Free Space");
else if (partition_type[p->id])
- sprintf(part_str, "%.16s (%02X)", partition_type[p->id], p->id);
+ sprintf(part_str, "%.17s (%02X)", partition_type[p->id], p->id);
else
- sprintf(part_str, "%.16s (%02X)", "Unknown", p->id);
- fp_printf(fp, "%-21.21s", part_str);
+ sprintf(part_str, "%.17s (%02X)", "Unknown", p->id);
+ fp_printf(fp, "%-22.22s", part_str);
fp_printf(fp, " ");
@@ -1474,7 +1568,7 @@ void print_p_info(void)
{
char fname[LINE_LENGTH];
FILE *fp;
- int i, to_file, pext = (ext_info.id == EXTENDED);
+ int i, to_file, pext = is_extended(ext_info.id);
if (print_only) {
fp = stdout;
@@ -1502,9 +1596,9 @@ void print_p_info(void)
fp_printf(fp, "Partition Table for %s\n", disk_device);
fp_printf(fp, "\n");
- fp_printf(fp, " First Last\n");
- fp_printf(fp, " # Type Sector Sector Offset Length Filesystem Type (ID) Flags\n");
- fp_printf(fp, "-- ------- -------- -------- ------- -------- --------------------- ---------\n");
+ fp_printf(fp, " First Last\n");
+ fp_printf(fp, " # Type Sector Sector Offset Length Filesystem Type (ID) Flags\n");
+ fp_printf(fp, "-- ------- -------- --------- ------ --------- ---------------------- ---------\n");
for (i = 0; i < num_parts; i++) {
if (pext && (p_info[i].first_sector >= ext_info.first_sector)) {
@@ -1557,7 +1651,7 @@ void print_part_entry(FILE *fp, int num, partition_info *pi)
ec = end / heads;
}
- fp_printf(fp, "%2d 0x%02X %4d %4d %4d 0x%02X %4d %4d %4d %7d %7d\n",
+ fp_printf(fp, "%2d 0x%02X %4d %4d %4d 0x%02X %4d %4d %4d %7d %9d\n",
num+1, flags, sh, ss, sc, id, eh, es, ec, first, size);
}
@@ -1594,9 +1688,9 @@ void print_part_table(void)
fp_printf(fp, "Partition Table for %s\n", disk_device);
fp_printf(fp, "\n");
- fp_printf(fp, " ---Starting--- ----Ending---- Start Number\n");
- fp_printf(fp, " # Flags Head Sect Cyl ID Head Sect Cyl Sector Sectors\n");
- fp_printf(fp, "-- ----- ---- ---- ---- ---- ---- ---- ---- ------- -------\n");
+ fp_printf(fp, " ---Starting--- ----Ending---- Start Number of\n");
+ fp_printf(fp, " # Flags Head Sect Cyl ID Head Sect Cyl Sector Sectors\n");
+ fp_printf(fp, "-- ----- ---- ---- ---- ---- ---- ---- ---- ------- ---------\n");
for (i = 0; i < 4; i++) {
for (j = 0;
@@ -1604,7 +1698,7 @@ void print_part_table(void)
j++);
if (j < num_parts) {
print_part_entry(fp, i, &(p_info[j]));
- } else if (ext_info.id == EXTENDED && ext_info.num == i) {
+ } else if (is_extended(ext_info.id) && ext_info.num == i) {
print_part_entry(fp, i, &ext_info);
} else {
print_part_entry(fp, i, NULL);
@@ -1667,7 +1761,7 @@ void display_help()
"allows you to create, delete and modify partitions on your hard",
"disk drive.",
"",
- "Copyright (C) 1994 Kevin E. Martin",
+ "Copyright (C) 1994-1997 Kevin E. Martin & aeb",
"",
"Command Meaning",
"------- -------",
@@ -1796,8 +1890,10 @@ int change_geometry(void)
}
if (ret_val) {
- if (p_info[num_parts-1].last_sector > heads*sectors*cylinders-1) {
- while (p_info[num_parts-1].first_sector > heads*sectors*cylinders-1) {
+ int disk_end = heads*sectors*cylinders-1;
+
+ if (p_info[num_parts-1].last_sector > disk_end) {
+ while (p_info[num_parts-1].first_sector > disk_end) {
if (p_info[num_parts-1].id == FREE_SPACE ||
p_info[num_parts-1].id == UNUSABLE)
remove_part(num_parts-1);
@@ -1805,18 +1901,18 @@ int change_geometry(void)
del_part(num_parts-1);
}
- p_info[num_parts-1].last_sector = heads*sectors*cylinders - 1;
+ p_info[num_parts-1].last_sector = disk_end;
- if (ext_info.last_sector > heads*sectors*cylinders-1)
- ext_info.last_sector = heads*sectors*cylinders - 1;
- } else if (p_info[num_parts-1].last_sector < heads*sectors*cylinders-1) {
+ if (ext_info.last_sector > disk_end)
+ ext_info.last_sector = disk_end;
+ } else if (p_info[num_parts-1].last_sector < disk_end) {
if (p_info[num_parts-1].id == FREE_SPACE ||
p_info[num_parts-1].id == UNUSABLE) {
- p_info[num_parts-1].last_sector = heads*sectors*cylinders - 1;
+ p_info[num_parts-1].last_sector = disk_end;
} else {
- insert_part(num_parts, PRI_OR_LOG, FREE_SPACE, 0,
- p_info[num_parts-1].last_sector+1,
- heads*sectors*cylinders-1, 0);
+ insert_empty_part(num_parts,
+ p_info[num_parts-1].last_sector+1,
+ disk_end);
}
}
@@ -1878,7 +1974,7 @@ void change_id(int i)
if (new_id == 0)
print_warning(ID_EMPTY);
- else if (new_id == EXTENDED)
+ else if (is_extended(new_id))
print_warning(ID_EXT);
else
p_info[i].id = new_id;
@@ -1935,6 +2031,11 @@ void draw_partition(int i)
else
mvprintw(y, FSTYPE_START, "Unknown (%02X)", p_info[i].id);
+ if (p_info[i].dos_label[0]) {
+ int l = strlen(p_info[i].dos_label);
+ mvprintw(y, SIZE_START-5-l, " [%s] ", p_info[i].dos_label);
+ }
+
size = p_info[i].last_sector - p_info[i].first_sector + 1;
if (display_units == SECTORS)
mvprintw(y, SIZE_START, "%9d", size);
@@ -2055,16 +2156,6 @@ int draw_cursor(int move)
return 0;
}
-void die(int dummy)
-{
- signal(SIGINT, old_SIGINT);
- signal(SIGTERM, old_SIGTERM);
- mvcur(0, COLS-1, LINES-1, 0);
- nl();
- endwin();
- fdexit(0);
-}
-
void do_curses_fdisk(void)
{
int done = FALSE;
@@ -2085,7 +2176,7 @@ void do_curses_fdisk(void)
{ 'W', "Write", "Write partition table to disk (this might destroy data)" },
{ 0, NULL, NULL }
};
-
+ curses_started = 1;
initscr();
old_SIGINT = signal(SIGINT, die);
old_SIGTERM = signal(SIGTERM, die);
@@ -2105,18 +2196,23 @@ void do_curses_fdisk(void)
draw_screen();
while (!done) {
- (void)draw_cursor(0);
+ char *s;
- if (p_info[cur_part].id == FREE_SPACE)
- command = menuSelect(COMMAND_LINE_Y, COMMAND_LINE_X, menuMain, 8, "hnpquW",
- MENU_HORIZ | MENU_BUTTON | MENU_ACCEPT_OTHERS, 0);
- else if (p_info[cur_part].id > 0)
- command = menuSelect(COMMAND_LINE_Y, COMMAND_LINE_X, menuMain, 8, "bdhmpqtuW",
- MENU_HORIZ | MENU_BUTTON | MENU_ACCEPT_OTHERS, 0);
- else
- command = menuSelect(COMMAND_LINE_Y, COMMAND_LINE_X, menuMain, 8, "hpquW",
- MENU_HORIZ | MENU_BUTTON | MENU_ACCEPT_OTHERS, 0);
+ (void)draw_cursor(0);
+ if (p_info[cur_part].id == FREE_SPACE) {
+ s = ((opentype == O_RDWR) ? "hnpquW" : "hnpqu");
+ command = menuSelect(COMMAND_LINE_Y, COMMAND_LINE_X, menuMain, 8,
+ s, MENU_HORIZ | MENU_BUTTON | MENU_ACCEPT_OTHERS, 0);
+ } else if (p_info[cur_part].id > 0) {
+ s = ((opentype == O_RDWR) ? "bdhmpqtuW" : "bdhmpqtu");
+ command = menuSelect(COMMAND_LINE_Y, COMMAND_LINE_X, menuMain, 8,
+ s, MENU_HORIZ | MENU_BUTTON | MENU_ACCEPT_OTHERS, 0);
+ } else {
+ s = ((opentype == O_RDWR) ? "hpquW" : "hpqu");
+ command = menuSelect(COMMAND_LINE_Y, COMMAND_LINE_X, menuMain, 8,
+ s, MENU_HORIZ | MENU_BUTTON | MENU_ACCEPT_OTHERS, 0);
+ }
switch ( command ) {
case 'B':
case 'b':
@@ -2225,30 +2321,34 @@ void do_curses_fdisk(void)
}
}
- signal(SIGINT, old_SIGINT);
- signal(SIGTERM, old_SIGTERM);
- mvcur(0, COLS-1, LINES-1, 0);
- nl();
- endwin();
- fdexit(0);
+ die_x(0);
}
void copyright(void)
{
- fprintf(stderr, "Copyright (C) 1994 Kevin E. Martin\n");
+ fprintf(stderr, "Copyright (C) 1994-1997 Kevin E. Martin & aeb\n");
}
void usage(char *prog_name)
{
- fprintf(stderr,
- "%s: [-avz] [-c # cylinders] [-h # heads] [-s # sectors/track]\n",
- prog_name);
- fprintf(stderr,
- "[ -P opt ] device\n");
+ fprintf(stderr, "\nUsage:\n");
+ fprintf(stderr, "Print version:\n");
+ fprintf(stderr, "\t%s -v\n", prog_name);
+ fprintf(stderr, "Print partition table:\n");
+ fprintf(stderr, "\t%s -P {r|s|t} [options] device\n", prog_name);
+ fprintf(stderr, "Interactive use:\n");
+ fprintf(stderr, "\t%s [options] device\n", prog_name);
+ fprintf(stderr, "
+Options:
+-a: Use arrow instead of highlighting;
+-z: Start with a zero partition table, instead of reading the pt from disk;
+-c C -h H -s S: Override the kernel's idea of the number of cylinders,
+ the number of heads and the number of sectors/track.\n\n");
+
copyright();
}
-void main(int argc, char **argv)
+int main(int argc, char **argv)
{
char c;
int i, len;
@@ -2315,7 +2415,7 @@ void main(int argc, char **argv)
else if (argc-optind != 0) {
usage(argv[0]);
exit(1);
- } else if ((fd = open(DEFAULT_DEVICE, O_RDWR)) < 0)
+ } else if ((fd = open(DEFAULT_DEVICE, O_RDONLY)) < 0)
disk_device = ALTERNATE_DEVICE;
else close(fd);
@@ -2329,4 +2429,5 @@ void main(int argc, char **argv)
print_part_table();
} else
do_curses_fdisk();
+ return 0;
}
diff --git a/disk-utils/fdformat.c b/disk-utils/fdformat.c
index 8b08535a6..46b9e2320 100644
--- a/disk-utils/fdformat.c
+++ b/disk-utils/fdformat.c
@@ -7,6 +7,7 @@
#include <unistd.h>
#include <stdlib.h>
#include <sys/stat.h>
+#include <sys/ioctl.h>
#include <linux/fd.h>
#include <linux/fs.h>
@@ -28,13 +29,15 @@ static void format_disk(char *name)
for (track = 0; track < param.track; track++) {
descr.track = track;
descr.head = 0;
- if (ioctl(ctrl,FDFMTTRK,(int) &descr) < 0) PERROR("\nioctl(FDFMTTRK)");
+ if (ioctl(ctrl,FDFMTTRK,(long) &descr) < 0)
+ PERROR("\nioctl(FDFMTTRK)");
+
printf("%3d\b\b\b",track);
fflush(stdout);
if (param.head == 2) {
descr.head = 1;
- if (ioctl(ctrl,FDFMTTRK,(int) &descr) < 0)
- PERROR("\nioctl(FDFMTTRK)");
+ if (ioctl(ctrl,FDFMTTRK,(long) &descr) < 0)
+ PERROR("\nioctl(FDFMTTRK)");
}
}
if (ioctl(ctrl,FDFMTEND,NULL) < 0) PERROR("\nioctl(FDFMTEND)");
@@ -72,7 +75,7 @@ static void usage(char *name)
{
char *this;
- if (this = strrchr(name,'/')) name = this+1;
+ if ((this = strrchr(name,'/')) != NULL) name = this+1;
fprintf(stderr,"usage: %s [ -n ] device\n",name);
exit(1);
}
@@ -100,7 +103,8 @@ int main(int argc,char **argv)
}
if (access(argv[1],W_OK) < 0) PERROR(argv[1]);
if ((ctrl = open(argv[1],3)) < 0) PERROR(argv[1]);
- if (ioctl(ctrl,FDGETPRM,(int) &param) < 0) PERROR("ioctl(FDGETPRM)");
+ if (ioctl(ctrl,FDGETPRM,(long) &param) < 0)
+ PERROR("Could not determine current format type");
printf("%sle-sided, %d tracks, %d sec/track. Total capacity %d kB.\n",
param.head ? "Doub" : "Sing",param.track,param.sect,param.size >> 1);
format_disk(argv[1]);
diff --git a/disk-utils/fdisk.8 b/disk-utils/fdisk.8
index 395e9c71d..29d56c40b 100644
--- a/disk-utils/fdisk.8
+++ b/disk-utils/fdisk.8
@@ -101,7 +101,7 @@ if you use the
.B dd
command, since a small typo can make all of the data on your disk useless.
-For best resutls, you should always use an OS-specific partition table
+For best results, you should always use an OS-specific partition table
program. For example, you should make DOS partitions with the DOS FDISK
program and Linux partitions with the Linux fdisk or Linux cfdisk program.
diff --git a/disk-utils/fdisk.c b/disk-utils/fdisk.c
index f3455fa5f..95b958d82 100644
--- a/disk-utils/fdisk.c
+++ b/disk-utils/fdisk.c
@@ -225,7 +225,7 @@ void menu(void)
puts("Command action\n"
" a toggle a bootable flag\n"
" b edit bsd disklabel\n" /* bf */
- " c toggle the dos compatiblity flag\n"
+ " c toggle the dos compatibility flag\n"
" d delete a partition\n"
" l list known partition types\n"
" m print this menu\n"
@@ -449,7 +449,7 @@ void read_extended(struct partition *p)
}
}
-void get_boot(void)
+int get_boot(void)
{
int i;
struct hd_geometry geometry;
@@ -464,6 +464,7 @@ void get_boot(void)
}
if (SECTOR_SIZE != read(fd, buffer, SECTOR_SIZE))
fatal(unable_to_read);
+
#ifdef HDIO_REQ
if (!ioctl(fd, HDIO_REQ, &geometry)) {
#else
@@ -479,6 +480,10 @@ void get_boot(void)
else update_units();
warn_geometry();
+ if (*(unsigned short *) (0x1fe + buffer) != 0xAA55) {
+ return 0; /* not a valid partition table */
+ }
+
for (i = 0; i < 4; i++)
if(part_table[i]->sys_ind == EXTENDED)
if (partitions != 4)
@@ -493,6 +498,8 @@ void get_boot(void)
*table_check(buffers[i]), i + 1);
changed[i] = 1;
}
+
+ return 1;
}
int read_line(void)
@@ -587,6 +594,7 @@ uint read_int(uint low, uint dflt, uint high, enum offset base, char *mesg)
case lower: i += low; break;
case upper: i += high; break;
case deflt: i += dflt; break;
+ case ignore:
}
}
else
@@ -805,12 +813,12 @@ static void check_consistency(struct partition *p, int partition)
return; /* do not check extended partitions */
/* physical beginning c, h, s */
- pbc = p->cyl & 0xff | (p->sector << 2) & 0x300;
+ pbc = (p->cyl & 0xff) | ((p->sector << 2) & 0x300);
pbh = p->head;
pbs = p->sector & 0x3f;
/* physical ending c, h, s */
- pec = p->end_cyl & 0xff | (p->end_sector << 2) & 0x300;
+ pec = (p->end_cyl & 0xff) | ((p->end_sector << 2) & 0x300);
peh = p->end_head;
pes = p->end_sector & 0x3f;
@@ -902,7 +910,7 @@ void x_list_table(int extend)
disk_device, heads, sectors, cylinders);
printf("Nr AF Hd Sec Cyl Hd Sec Cyl Start Size ID\n");
for (i = 0 ; i < partitions; i++)
- if (p = q[i]) {
+ if ((p = q[i]) != NULL) {
printf("%2d %02x%4d%4d%5d%4d%4d%5d%8d%8d %02x\n",
i + 1, p->boot_ind, p->head,
sector(p->sector),
@@ -987,9 +995,8 @@ void verify(void)
last[i]);
total += last[i] + 1 - first[i];
for (j = 0; j < i; j++)
- if (first[i] >= first[j] && first[i] <= last[j]
- || (last[i] <= last[j] &&
- last[i] >= first[j])) {
+ if ((first[i] >= first[j] && first[i] <= last[j])
+ || ((last[i] <= last[j] && last[i] >= first[j]))) {
printf("Warning: partition %d overlaps "
"partition %d.\n", j + 1, i + 1);
total += first[i] >= first[j] ?
@@ -1021,7 +1028,7 @@ void verify(void)
if (total > heads * sectors * cylinders)
printf("Total allocated sectors %d greater than the maximum "
"%d\n", total, heads * sectors * cylinders);
- else if (total = heads * sectors * cylinders - total)
+ else if ((total = heads * sectors * cylinders - total) != 0)
printf("%d unallocated sectors\n", total);
}
@@ -1219,11 +1226,10 @@ void write_table(void)
printf("The partition table has been altered!\n\n");
- printf("Calling ioctl() to re-read partition table.\n"
- "(Reboot to ensure the partition table has been updated.)\n");
+ printf("Calling ioctl() to re-read partition table.\n");
sync();
sleep(2);
- if (i = ioctl(fd, BLKRRPART)) {
+ if ((i = ioctl(fd, BLKRRPART)) != 0) {
error = errno;
} else {
/* some kernel versions (1.2.x) seem to have trouble
@@ -1231,7 +1237,7 @@ void write_table(void)
twice, the second time works. - biro@yggdrasil.com */
sync();
sleep(2);
- if(i = ioctl(fd, BLKRRPART))
+ if((i = ioctl(fd, BLKRRPART)) != 0)
error = errno;
}
@@ -1352,22 +1358,27 @@ void xselect(void)
void try(char *device)
{
disk_device = device;
- if (!setjmp(listingbuf))
+ if (!setjmp(listingbuf)) {
if ((fd = open(disk_device, type_open)) >= 0) {
- close(fd);
- get_boot();
- list_table();
- if (partitions > 4)
+ if (get_boot()) {
+ close(fd);
+ list_table();
+ if (partitions > 4)
delete_partition(ext_index);
- } else {
+ } else {
+ btrydev(device);
+ close(fd);
+ }
+ } else {
/* Ignore other errors, since we try IDE
and SCSI hard disks which may not be
installed on the system. */
- if(errno == EACCES) {
- fprintf(stderr, "Cannot open %s\n", device);
- exit(1);
- }
- }
+ if(errno == EACCES) {
+ fprintf(stderr, "Cannot open %s\n", device);
+ exit(1);
+ }
+ }
+ }
}
void main(int argc, char **argv)
diff --git a/disk-utils/fdisk.h b/disk-utils/fdisk.h
index 4f23fd8a3..89510031a 100644
--- a/disk-utils/fdisk.h
+++ b/disk-utils/fdisk.h
@@ -45,3 +45,4 @@ extern char *const str_units(void);
/* prototypes for fdisklabel.c */
extern void bselect(void);
+extern void btrydev (char * dev);
diff --git a/disk-utils/fdisklabel.c b/disk-utils/fdisklabel.c
index 5fbf67a4c..a6b5ecc4d 100644
--- a/disk-utils/fdisklabel.c
+++ b/disk-utils/fdisklabel.c
@@ -55,38 +55,46 @@
#define DKTYPENAMES
#include "fdisklabel.h"
-static void bsd_delete_part (void);
-static void bsd_new_part (void);
-static void bsd_print_disklabel (int show_all);
-static void bsd_write_disklabel (void);
-static int bsd_create_disklabel (void);
-static void bsd_edit_disklabel (void);
-static void bsd_write_bootstrap (void);
-static void bsd_change_fstype (void);
-static int bsd_get_part_index (int max);
-static int bsd_check_new_partition (int *i);
-static void bsd_list_types (void);
-static u_short bsd_dkcksum (struct disklabel *lp);
-static int bsd_initlabel (struct partition *p, struct disklabel *d, int pindex);
-static int bsd_readlabel (struct partition *p, struct disklabel *d);
-static int bsd_writelabel (struct partition *p, struct disklabel *d);
+static void xbsd_delete_part (void);
+static void xbsd_new_part (void);
+static void xbsd_print_disklabel (int show_all);
+static void xbsd_write_disklabel (void);
+static int xbsd_create_disklabel (void);
+static void xbsd_edit_disklabel (void);
+static void xbsd_write_bootstrap (void);
+static void xbsd_change_fstype (void);
+static int xbsd_get_part_index (int max);
+static int xbsd_check_new_partition (int *i);
+static void xbsd_list_types (void);
+static u_short xbsd_dkcksum (struct xbsd_disklabel *lp);
+static int xbsd_initlabel (struct partition *p, struct xbsd_disklabel *d, int pindex);
+static int xbsd_readlabel (struct partition *p, struct xbsd_disklabel *d);
+static int xbsd_writelabel (struct partition *p, struct xbsd_disklabel *d);
static void sync_disks (void);
#if defined (i386)
-static int bsd_translate_fstype (int linux_type);
-static void bsd_link_part (void);
+static int xbsd_translate_fstype (int linux_type);
+static void xbsd_link_part (void);
#endif
#if defined (__alpha__)
void alpha_bootblock_checksum (char *boot);
#endif
-static struct disklabel bsd_dlabel;
+static struct xbsd_disklabel xbsd_dlabel;
static char buffer[BSD_BBSIZE];
#if defined (i386)
-static struct partition *bsd_part;
-static int bsd_part_index;
+static struct partition *xbsd_part;
+static int xbsd_part_index;
#endif
void
+btrydev (char * dev) {
+ if (xbsd_readlabel (NULL, &xbsd_dlabel) == 0)
+ return;
+ printf("\nBSD label for device: %s\n", dev);
+ xbsd_print_disklabel (0);
+}
+
+void
bmenu (void)
{
puts ("Command action\n"
@@ -119,18 +127,18 @@ bselect (void)
for (t=0; t<4; t++)
if (part_table[t] -> sys_ind == NETBSD_PARTITION)
{
- bsd_part = part_table[t];
- bsd_part_index = t;
- if (bsd_part -> start_sect == 0)
+ xbsd_part = part_table[t];
+ xbsd_part_index = t;
+ if (xbsd_part -> start_sect == 0)
{
fprintf (stderr, "Partition %s%d has invalid starting sector 0.\n",
disk_device, t+1);
return;
}
printf ("Reading disklabel of %s%d at sector %d.\n",
- disk_device, t+1, bsd_part -> start_sect + BSD_LABELSECTOR);
- if (bsd_readlabel (bsd_part, &bsd_dlabel) == 0)
- if (bsd_create_disklabel () == 0)
+ disk_device, t+1, xbsd_part -> start_sect + BSD_LABELSECTOR);
+ if (xbsd_readlabel (xbsd_part, &xbsd_dlabel) == 0)
+ if (xbsd_create_disklabel () == 0)
return;
break;
}
@@ -143,8 +151,8 @@ bselect (void)
#elif defined (__alpha__)
- if (bsd_readlabel (NULL, &bsd_dlabel) == 0)
- if (bsd_create_disklabel () == 0)
+ if (xbsd_readlabel (NULL, &xbsd_dlabel) == 0)
+ if (xbsd_create_disklabel () == 0)
exit ( EXIT_SUCCESS );
#endif
@@ -155,40 +163,40 @@ bselect (void)
switch (tolower (read_char ("BSD disklabel command (m for help): ")))
{
case 'd':
- bsd_delete_part ();
+ xbsd_delete_part ();
break;
case 'e':
- bsd_edit_disklabel ();
+ xbsd_edit_disklabel ();
break;
case 'i':
- bsd_write_bootstrap ();
+ xbsd_write_bootstrap ();
break;
case 'l':
- bsd_list_types ();
+ xbsd_list_types ();
break;
case 'n':
- bsd_new_part ();
+ xbsd_new_part ();
break;
case 'p':
- bsd_print_disklabel (0);
+ xbsd_print_disklabel (0);
break;
case 'q':
close (fd);
exit ( EXIT_SUCCESS );
case 's':
- bsd_print_disklabel (1);
+ xbsd_print_disklabel (1);
break;
case 't':
- bsd_change_fstype ();
+ xbsd_change_fstype ();
break;
case 'w':
- bsd_write_disklabel ();
+ xbsd_write_disklabel ();
break;
#if defined (i386)
case 'r':
return;
case 'x':
- bsd_link_part ();
+ xbsd_link_part ();
break;
#endif
default:
@@ -199,35 +207,35 @@ bselect (void)
}
static void
-bsd_delete_part (void)
+xbsd_delete_part (void)
{
int i;
- i = bsd_get_part_index (bsd_dlabel.d_npartitions);
- bsd_dlabel.d_partitions[i].p_size = 0;
- bsd_dlabel.d_partitions[i].p_offset = 0;
- bsd_dlabel.d_partitions[i].p_fstype = BSD_FS_UNUSED;
- if (bsd_dlabel.d_npartitions == i + 1)
- while (bsd_dlabel.d_partitions[bsd_dlabel.d_npartitions-1].p_size == 0)
- bsd_dlabel.d_npartitions--;
+ i = xbsd_get_part_index (xbsd_dlabel.d_npartitions);
+ xbsd_dlabel.d_partitions[i].p_size = 0;
+ xbsd_dlabel.d_partitions[i].p_offset = 0;
+ xbsd_dlabel.d_partitions[i].p_fstype = BSD_FS_UNUSED;
+ if (xbsd_dlabel.d_npartitions == i + 1)
+ while (xbsd_dlabel.d_partitions[xbsd_dlabel.d_npartitions-1].p_size == 0)
+ xbsd_dlabel.d_npartitions--;
}
static void
-bsd_new_part (void)
+xbsd_new_part (void)
{
uint begin, end;
char mesg[48];
int i;
- if (!bsd_check_new_partition (&i))
+ if (!xbsd_check_new_partition (&i))
return;
#if defined (i386)
- begin = bsd_part -> start_sect;
- end = begin + bsd_part -> nr_sects - 1;
+ begin = xbsd_part -> start_sect;
+ end = begin + xbsd_part -> nr_sects - 1;
#elif defined (__alpha__)
begin = 0;
- end = bsd_dlabel.d_secperunit;
+ end = xbsd_dlabel.d_secperunit;
#endif
sprintf (mesg, "First %s", str_units());
@@ -241,32 +249,32 @@ bsd_new_part (void)
begin = (begin - 1) * display_factor;
end = end * display_factor - 1;
}
- bsd_dlabel.d_partitions[i].p_size = end - begin + 1;
- bsd_dlabel.d_partitions[i].p_offset = begin;
- bsd_dlabel.d_partitions[i].p_fstype = BSD_FS_UNUSED;
+ xbsd_dlabel.d_partitions[i].p_size = end - begin + 1;
+ xbsd_dlabel.d_partitions[i].p_offset = begin;
+ xbsd_dlabel.d_partitions[i].p_fstype = BSD_FS_UNUSED;
}
static void
-bsd_print_disklabel (int show_all)
+xbsd_print_disklabel (int show_all)
{
- struct disklabel *lp = &bsd_dlabel;
- struct bsd_partition *pp;
+ struct xbsd_disklabel *lp = &xbsd_dlabel;
+ struct xbsd_partition *pp;
FILE *f = stdout;
int i, j;
if (show_all)
{
#if defined (i386)
- fprintf(f, "# %s%d:\n", disk_device, bsd_part_index+1);
+ fprintf(f, "# %s%d:\n", disk_device, xbsd_part_index+1);
#elif defined (__alpha__)
fprintf(f, "# %s:\n", disk_device);
#endif
if ((unsigned) lp->d_type < BSD_DKMAXTYPES)
- fprintf(f, "type: %s\n", bsd_dktypenames[lp->d_type]);
+ fprintf(f, "type: %s\n", xbsd_dktypenames[lp->d_type]);
else
fprintf(f, "type: %d\n", lp->d_type);
- fprintf(f, "disk: %.*s\n", sizeof(lp->d_typename), lp->d_typename);
- fprintf(f, "label: %.*s\n", sizeof(lp->d_packname), lp->d_packname);
+ fprintf(f, "disk: %.*s\n", (int) sizeof(lp->d_typename), lp->d_typename);
+ fprintf(f, "label: %.*s\n", (int) sizeof(lp->d_packname), lp->d_packname);
fprintf(f, "flags:");
if (lp->d_flags & BSD_D_REMOVABLE)
fprintf(f, " removable");
@@ -275,17 +283,19 @@ bsd_print_disklabel (int show_all)
if (lp->d_flags & BSD_D_BADSECT)
fprintf(f, " badsect");
fprintf(f, "\n");
- fprintf(f, "bytes/sector: %d\n", lp->d_secsize);
- fprintf(f, "sectors/track: %d\n", lp->d_nsectors);
- fprintf(f, "tracks/cylinder: %d\n", lp->d_ntracks);
- fprintf(f, "sectors/cylinder: %d\n", lp->d_secpercyl);
- fprintf(f, "cylinders: %d\n", lp->d_ncylinders);
+ /* On various machines the fields of *lp are short/int/long */
+ /* In order to avoid problems, we cast them all to long. */
+ fprintf(f, "bytes/sector: %ld\n", (long) lp->d_secsize);
+ fprintf(f, "sectors/track: %ld\n", (long) lp->d_nsectors);
+ fprintf(f, "tracks/cylinder: %ld\n", (long) lp->d_ntracks);
+ fprintf(f, "sectors/cylinder: %ld\n", (long) lp->d_secpercyl);
+ fprintf(f, "cylinders: %ld\n", (long) lp->d_ncylinders);
fprintf(f, "rpm: %d\n", lp->d_rpm);
fprintf(f, "interleave: %d\n", lp->d_interleave);
fprintf(f, "trackskew: %d\n", lp->d_trackskew);
fprintf(f, "cylinderskew: %d\n", lp->d_cylskew);
- fprintf(f, "headswitch: %d\t\t# milliseconds\n", lp->d_headswitch);
- fprintf(f, "track-to-track seek: %d\t# milliseconds\n", lp->d_trkseek);
+ fprintf(f, "headswitch: %ld\t\t# milliseconds\n", (long) lp->d_headswitch);
+ fprintf(f, "track-to-track seek: %ld\t# milliseconds\n", (long) lp->d_trkseek);
fprintf(f, "drivedata: ");
for (i = NDDATA - 1; i >= 0; i--)
if (lp->d_drivedata[i])
@@ -293,29 +303,29 @@ bsd_print_disklabel (int show_all)
if (i < 0)
i = 0;
for (j = 0; j <= i; j++)
- fprintf(f, "%d ", lp->d_drivedata[j]);
+ fprintf(f, "%ld ", (long) lp->d_drivedata[j]);
}
fprintf (f, "\n%d partitions:\n", lp->d_npartitions);
fprintf (f, "# size offset fstype [fsize bsize cpg]\n");
pp = lp->d_partitions;
for (i = 0; i < lp->d_npartitions; i++, pp++) {
if (pp->p_size) {
- fprintf(f, " %c: %8d %8d ", 'a' + i,
- pp->p_size, pp->p_offset);
+ fprintf(f, " %c: %8ld %8ld ", 'a' + i,
+ (long) pp->p_size, (long) pp->p_offset);
if ((unsigned) pp->p_fstype < BSD_FSMAXTYPES)
- fprintf(f, "%8.8s", bsd_fstypes[pp->p_fstype].name);
+ fprintf(f, "%8.8s", xbsd_fstypes[pp->p_fstype].name);
else
fprintf(f, "%8x", pp->p_fstype);
switch (pp->p_fstype)
{
case BSD_FS_UNUSED:
- fprintf(f, " %5d %5d %5.5s ",
- pp->p_fsize, pp->p_fsize * pp->p_frag, "");
+ fprintf(f, " %5ld %5ld %5.5s ",
+ (long) pp->p_fsize, (long) pp->p_fsize * pp->p_frag, "");
break;
case BSD_FS_BSDFFS:
- fprintf(f, " %5d %5d %5d ",
- pp->p_fsize, pp->p_fsize * pp->p_frag,
+ fprintf(f, " %5ld %5ld %5d ",
+ (long) pp->p_fsize, (long) pp->p_fsize * pp->p_frag,
pp->p_cpg);
break;
@@ -323,7 +333,7 @@ bsd_print_disklabel (int show_all)
fprintf(f, "%20.20s", "");
break;
}
- fprintf(f, "\t# (Cyl. %4d",
+ fprintf(f, "\t# (Cyl. %4ld", (long)
#if 0
pp->p_offset / lp->d_secpercyl); /* differs from Linux fdisk */
#else
@@ -333,8 +343,8 @@ bsd_print_disklabel (int show_all)
putc('*', f);
else
putc(' ', f);
- fprintf(f, "- %d",
- (pp->p_offset +
+ fprintf(f, "- %ld",
+ (long) (pp->p_offset +
pp->p_size + lp->d_secpercyl - 1) /
#if 0
lp->d_secpercyl - 1); /* differs from Linux fdisk */
@@ -349,25 +359,25 @@ bsd_print_disklabel (int show_all)
}
static void
-bsd_write_disklabel (void)
+xbsd_write_disklabel (void)
{
#if defined (i386)
- printf ("Writing disklabel to %s%d.\n", disk_device, bsd_part_index+1);
- bsd_writelabel (bsd_part, &bsd_dlabel);
+ printf ("Writing disklabel to %s%d.\n", disk_device, xbsd_part_index+1);
+ xbsd_writelabel (xbsd_part, &xbsd_dlabel);
#elif defined (__alpha__)
printf ("Writing disklabel to %s.\n", disk_device);
- bsd_writelabel (NULL, &bsd_dlabel);
+ xbsd_writelabel (NULL, &xbsd_dlabel);
#endif
}
static int
-bsd_create_disklabel (void)
+xbsd_create_disklabel (void)
{
char c;
#if defined (i386)
fprintf (stderr, "%s%d contains no disklabel.\n",
- disk_device, bsd_part_index+1);
+ disk_device, xbsd_part_index+1);
#elif defined (__alpha__)
fprintf (stderr, "%s contains no disklabel.\n", disk_device);
#endif
@@ -376,12 +386,12 @@ bsd_create_disklabel (void)
if ((c = tolower (read_char ("Do you want to create a disklabel? (y/n) "))) == 'y')
{
#if defined (i386)
- if (bsd_initlabel (bsd_part, &bsd_dlabel, bsd_part_index) == 1)
+ if (xbsd_initlabel (xbsd_part, &xbsd_dlabel, xbsd_part_index) == 1)
#elif defined (__alpha__)
- if (bsd_initlabel (NULL, &bsd_dlabel, 0) == 1)
+ if (xbsd_initlabel (NULL, &xbsd_dlabel, 0) == 1)
#endif
{
- bsd_print_disklabel (1);
+ xbsd_print_disklabel (1);
return 1;
}
else
@@ -405,11 +415,11 @@ edit_int (int def, char *mesg)
}
static void
-bsd_edit_disklabel (void)
+xbsd_edit_disklabel (void)
{
- struct disklabel *d;
+ struct xbsd_disklabel *d;
- d = &bsd_dlabel;
+ d = &xbsd_dlabel;
#ifdef __alpha__
d -> d_secsize = (u_long) edit_int ((u_long) d -> d_secsize ,"bytes/sector");
@@ -439,7 +449,7 @@ bsd_edit_disklabel (void)
}
static int
-bsd_get_bootstrap (char *path, void *ptr, int size)
+xbsd_get_bootstrap (char *path, void *ptr, int size)
{
int fd;
@@ -460,16 +470,16 @@ bsd_get_bootstrap (char *path, void *ptr, int size)
}
static void
-bsd_write_bootstrap (void)
+xbsd_write_bootstrap (void)
{
char *bootdir = BSD_LINUX_BOOTDIR;
char path[MAXPATHLEN];
char *dkbasename;
- struct disklabel dl;
+ struct xbsd_disklabel dl;
char *d, *p, *e;
int sector;
- if (bsd_dlabel.d_type == BSD_DTYPE_SCSI)
+ if (xbsd_dlabel.d_type == BSD_DTYPE_SCSI)
dkbasename = "sd";
else
dkbasename = "wd";
@@ -481,22 +491,22 @@ bsd_write_bootstrap (void)
dkbasename = line_ptr;
}
sprintf (path, "%s/%sboot", bootdir, dkbasename);
- if (!bsd_get_bootstrap (path, buffer, (int) bsd_dlabel.d_secsize))
+ if (!xbsd_get_bootstrap (path, buffer, (int) xbsd_dlabel.d_secsize))
return;
- /* We need a backup of the disklabel (bsd_dlabel might have changed). */
+ /* We need a backup of the disklabel (xbsd_dlabel might have changed). */
d = &buffer[BSD_LABELSECTOR * SECTOR_SIZE];
- bcopy (d, &dl, sizeof (struct disklabel));
+ bcopy (d, &dl, sizeof (struct xbsd_disklabel));
/* The disklabel will be overwritten by 0's from bootxx anyway */
- bzero (d, sizeof (struct disklabel));
+ bzero (d, sizeof (struct xbsd_disklabel));
sprintf (path, "%s/boot%s", bootdir, dkbasename);
- if (!bsd_get_bootstrap (path, &buffer[bsd_dlabel.d_secsize],
- (int) bsd_dlabel.d_bbsize - bsd_dlabel.d_secsize))
+ if (!xbsd_get_bootstrap (path, &buffer[xbsd_dlabel.d_secsize],
+ (int) xbsd_dlabel.d_bbsize - xbsd_dlabel.d_secsize))
return;
- e = d + sizeof (struct disklabel);
+ e = d + sizeof (struct xbsd_disklabel);
for (p=d; p < e; p++)
if (*p)
{
@@ -504,10 +514,10 @@ bsd_write_bootstrap (void)
exit ( EXIT_FAILURE );
}
- bcopy (&dl, d, sizeof (struct disklabel));
+ bcopy (&dl, d, sizeof (struct xbsd_disklabel));
#if defined (i386)
- sector = bsd_part -> start_sect;
+ sector = xbsd_part -> start_sect;
#elif defined (__alpha__)
sector = 0;
alpha_bootblock_checksum (buffer);
@@ -519,7 +529,7 @@ bsd_write_bootstrap (void)
fatal (unable_to_write);
#if defined (i386)
- printf ("Bootstrap installed on %s%d.\n", disk_device, bsd_part_index+1);
+ printf ("Bootstrap installed on %s%d.\n", disk_device, xbsd_part_index+1);
#elif defined (__alpha__)
printf ("Bootstrap installed on %s.\n", disk_device);
#endif
@@ -528,16 +538,16 @@ bsd_write_bootstrap (void)
}
static void
-bsd_change_fstype (void)
+xbsd_change_fstype (void)
{
int i;
- i = bsd_get_part_index (bsd_dlabel.d_npartitions);
- bsd_dlabel.d_partitions[i].p_fstype = read_hex (bsd_fstypes, BSD_FSMAXTYPES);
+ i = xbsd_get_part_index (xbsd_dlabel.d_npartitions);
+ xbsd_dlabel.d_partitions[i].p_fstype = read_hex (xbsd_fstypes, BSD_FSMAXTYPES);
}
static int
-bsd_get_part_index (int max)
+xbsd_get_part_index (int max)
{
char prompt[40];
char l;
@@ -550,14 +560,14 @@ bsd_get_part_index (int max)
}
static int
-bsd_check_new_partition (int *i)
+xbsd_check_new_partition (int *i)
{
int t;
- if (bsd_dlabel.d_npartitions == BSD_MAXPARTITIONS)
+ if (xbsd_dlabel.d_npartitions == BSD_MAXPARTITIONS)
{
for (t=0; t < BSD_MAXPARTITIONS; t++)
- if (bsd_dlabel.d_partitions[t].p_size == 0)
+ if (xbsd_dlabel.d_partitions[t].p_size == 0)
break;
if (t == BSD_MAXPARTITIONS)
@@ -566,12 +576,12 @@ bsd_check_new_partition (int *i)
return 0;
}
}
- *i = bsd_get_part_index (BSD_MAXPARTITIONS);
+ *i = xbsd_get_part_index (BSD_MAXPARTITIONS);
- if (*i >= bsd_dlabel.d_npartitions)
- bsd_dlabel.d_npartitions = (*i) + 1;
+ if (*i >= xbsd_dlabel.d_npartitions)
+ xbsd_dlabel.d_npartitions = (*i) + 1;
- if (bsd_dlabel.d_partitions[*i].p_size != 0)
+ if (xbsd_dlabel.d_partitions[*i].p_size != 0)
{
fprintf (stderr, "This partition already exists.\n");
return 0;
@@ -580,13 +590,13 @@ bsd_check_new_partition (int *i)
}
static void
-bsd_list_types (void)
+xbsd_list_types (void)
{
- list_types (bsd_fstypes, BSD_FSMAXTYPES);
+ list_types (xbsd_fstypes, BSD_FSMAXTYPES);
}
static u_short
-bsd_dkcksum (struct disklabel *lp)
+xbsd_dkcksum (struct xbsd_disklabel *lp)
{
register u_short *start, *end;
register u_short sum = 0;
@@ -599,17 +609,17 @@ bsd_dkcksum (struct disklabel *lp)
}
static int
-bsd_initlabel (struct partition *p, struct disklabel *d, int pindex)
+xbsd_initlabel (struct partition *p, struct xbsd_disklabel *d, int pindex)
{
struct hd_geometry geometry;
- struct bsd_partition *pp;
+ struct xbsd_partition *pp;
if (ioctl (fd, HDIO_GETGEO, &geometry) == -1)
{
perror ("ioctl");
return 0;
}
- bzero (d, sizeof (struct disklabel));
+ bzero (d, sizeof (struct xbsd_disklabel));
d -> d_magic = BSD_DISKMAGIC;
@@ -667,7 +677,7 @@ bsd_initlabel (struct partition *p, struct disklabel *d, int pindex)
}
static int
-bsd_readlabel (struct partition *p, struct disklabel *d)
+xbsd_readlabel (struct partition *p, struct xbsd_disklabel *d)
{
int t, sector;
@@ -683,7 +693,7 @@ bsd_readlabel (struct partition *p, struct disklabel *d)
fatal (unable_to_read);
bcopy (&buffer[BSD_LABELSECTOR * SECTOR_SIZE + BSD_LABELOFFSET],
- d, sizeof (struct disklabel));
+ d, sizeof (struct xbsd_disklabel));
for (t = d -> d_npartitions; t < BSD_MAXPARTITIONS; t++)
{
@@ -701,7 +711,7 @@ bsd_readlabel (struct partition *p, struct disklabel *d)
}
static int
-bsd_writelabel (struct partition *p, struct disklabel *d)
+xbsd_writelabel (struct partition *p, struct xbsd_disklabel *d)
{
int sector;
@@ -712,13 +722,13 @@ bsd_writelabel (struct partition *p, struct disklabel *d)
#endif
d -> d_checksum = 0;
- d -> d_checksum = bsd_dkcksum (d);
+ d -> d_checksum = xbsd_dkcksum (d);
/* This is necessary if we want to write the bootstrap later,
otherwise we'd write the old disklabel with the bootstrap.
*/
bcopy (d, &buffer[BSD_LABELSECTOR * SECTOR_SIZE + BSD_LABELOFFSET],
- sizeof (struct disklabel));
+ sizeof (struct xbsd_disklabel));
#if defined (__alpha__) && BSD_LABELSECTOR == 0
alpha_bootblock_checksum (buffer);
@@ -729,7 +739,7 @@ bsd_writelabel (struct partition *p, struct disklabel *d)
#else
if (ext2_llseek (fd, sector * SECTOR_SIZE + BSD_LABELOFFSET, SEEK_SET) == -1)
fatal (unable_to_seek);
- if (sizeof (struct disklabel) != write (fd, d, sizeof (struct disklabel)))
+ if (sizeof (struct xbsd_disklabel) != write (fd, d, sizeof (struct xbsd_disklabel)))
fatal (unable_to_write);
#endif
@@ -748,7 +758,7 @@ sync_disks (void)
#if defined (i386)
static int
-bsd_translate_fstype (int linux_type)
+xbsd_translate_fstype (int linux_type)
{
switch (linux_type)
{
@@ -767,24 +777,23 @@ bsd_translate_fstype (int linux_type)
}
static void
-bsd_link_part (void)
+xbsd_link_part (void)
{
int k, i;
k = get_partition (1, partitions);
- if (!bsd_check_new_partition (&i))
+ if (!xbsd_check_new_partition (&i))
return;
- bsd_dlabel.d_partitions[i].p_size = part_table[k] -> nr_sects;
- bsd_dlabel.d_partitions[i].p_offset = part_table[k] -> start_sect;
- bsd_dlabel.d_partitions[i].p_fstype =
- bsd_translate_fstype (part_table[k] -> sys_ind);
+ xbsd_dlabel.d_partitions[i].p_size = part_table[k] -> nr_sects;
+ xbsd_dlabel.d_partitions[i].p_offset = part_table[k] -> start_sect;
+ xbsd_dlabel.d_partitions[i].p_fstype =
+ xbsd_translate_fstype (part_table[k] -> sys_ind);
}
#endif
#if defined (__alpha__)
-typedef unsigned long long u_int64_t;
void
alpha_bootblock_checksum (char *boot)
diff --git a/disk-utils/fdisklabel.h b/disk-utils/fdisklabel.h
index 841046bb8..d007b34b2 100644
--- a/disk-utils/fdisklabel.h
+++ b/disk-utils/fdisklabel.h
@@ -31,8 +31,14 @@
* SUCH DAMAGE.
*/
-#define BSD_DISKMAGIC ((u_long) 0x82564557)
+#ifndef BSD_DISKMAGIC /* perhaps from <linux/genhd.h> */
+#define BSD_DISKMAGIC ((__u32) 0x82564557)
+#endif
+
+#ifndef BSD_MAXPARTITIONS
#define BSD_MAXPARTITIONS 8
+#endif
+
#define BSD_LINUX_BOOTDIR "/usr/ucb/mdec"
#if defined (i386)
@@ -41,62 +47,40 @@
#define BSD_BBSIZE 8192 /* size of boot area, with label */
#define BSD_SBSIZE 8192 /* max size of fs superblock */
#elif defined (__alpha__)
-#error LABELSECTOR, LABELOFFSET, BBSIZE & SBSIZE are undefined for __alpha__
#define BSD_LABELSECTOR 0
-#define BSD_LABELOFFSET 0
-#define BSD_BBSIZE 0
-#define BSD_SBSIZE 0
+#define BSD_LABELOFFSET 64
+#define BSD_BBSIZE 8192
+#define BSD_SBSIZE 8192
#else
#error unknown architecture
#endif
-struct disklabel {
- u_long d_magic; /* the magic number */
- short d_type; /* drive type */
- short d_subtype; /* controller/d_type specific */
+struct xbsd_disklabel {
+ __u32 d_magic; /* the magic number */
+ __s16 d_type; /* drive type */
+ __s16 d_subtype; /* controller/d_type specific */
char d_typename[16]; /* type name, e.g. "eagle" */
- /*
- * d_packname contains the pack identifier and is returned when
- * the disklabel is read off the disk or in-core copy.
- * d_boot0 and d_boot1 are the (optional) names of the
- * primary (block 0) and secondary (block 1-15) bootstraps
- * as found in /usr/mdec. These are returned when using
- * getdiskbyname(3) to retrieve the values from /etc/disktab.
- */
-#if defined(KERNEL) || defined(STANDALONE)
char d_packname[16]; /* pack identifier */
-#else
- union {
- char un_d_packname[16]; /* pack identifier */
- struct {
- char *un_d_boot0; /* primary bootstrap name */
- char *un_d_boot1; /* secondary bootstrap name */
- } un_b;
- } d_un;
-#define d_packname d_un.un_d_packname
-#define d_boot0 d_un.un_b.un_d_boot0
-#define d_boot1 d_un.un_b.un_d_boot1
-#endif /* ! KERNEL or STANDALONE */
/* disk geometry: */
- u_long d_secsize; /* # of bytes per sector */
- u_long d_nsectors; /* # of data sectors per track */
- u_long d_ntracks; /* # of tracks per cylinder */
- u_long d_ncylinders; /* # of data cylinders per unit */
- u_long d_secpercyl; /* # of data sectors per cylinder */
- u_long d_secperunit; /* # of data sectors per unit */
+ __u32 d_secsize; /* # of bytes per sector */
+ __u32 d_nsectors; /* # of data sectors per track */
+ __u32 d_ntracks; /* # of tracks per cylinder */
+ __u32 d_ncylinders; /* # of data cylinders per unit */
+ __u32 d_secpercyl; /* # of data sectors per cylinder */
+ __u32 d_secperunit; /* # of data sectors per unit */
/*
* Spares (bad sector replacements) below
* are not counted in d_nsectors or d_secpercyl.
* Spare sectors are assumed to be physical sectors
* which occupy space at the end of each track and/or cylinder.
*/
- u_short d_sparespertrack; /* # of spare sectors per track */
- u_short d_sparespercyl; /* # of spare sectors per cylinder */
+ __u16 d_sparespertrack; /* # of spare sectors per track */
+ __u16 d_sparespercyl; /* # of spare sectors per cylinder */
/*
* Alternate cylinders include maintenance, replacement,
* configuration description areas, etc.
*/
- u_long d_acylinders; /* # of alt. cylinders per unit */
+ __u32 d_acylinders; /* # of alt. cylinders per unit */
/* hardware characteristics: */
/*
@@ -115,30 +99,30 @@ struct disklabel {
* Finally, d_cylskew is the offset of sector 0 on cylinder N
* relative to sector 0 on cylinder N-1.
*/
- u_short d_rpm; /* rotational speed */
- u_short d_interleave; /* hardware sector interleave */
- u_short d_trackskew; /* sector 0 skew, per track */
- u_short d_cylskew; /* sector 0 skew, per cylinder */
- u_long d_headswitch; /* head switch time, usec */
- u_long d_trkseek; /* track-to-track seek, usec */
- u_long d_flags; /* generic flags */
+ __u16 d_rpm; /* rotational speed */
+ __u16 d_interleave; /* hardware sector interleave */
+ __u16 d_trackskew; /* sector 0 skew, per track */
+ __u16 d_cylskew; /* sector 0 skew, per cylinder */
+ __u32 d_headswitch; /* head switch time, usec */
+ __u32 d_trkseek; /* track-to-track seek, usec */
+ __u32 d_flags; /* generic flags */
#define NDDATA 5
- u_long d_drivedata[NDDATA]; /* drive-type specific information */
+ __u32 d_drivedata[NDDATA]; /* drive-type specific information */
#define NSPARE 5
- u_long d_spare[NSPARE]; /* reserved for future use */
- u_long d_magic2; /* the magic number (again) */
- u_short d_checksum; /* xor of data incl. partitions */
+ __u32 d_spare[NSPARE]; /* reserved for future use */
+ __u32 d_magic2; /* the magic number (again) */
+ __u16 d_checksum; /* xor of data incl. partitions */
/* filesystem and partition information: */
- u_short d_npartitions; /* number of partitions in following */
- u_long d_bbsize; /* size of boot area at sn0, bytes */
- u_long d_sbsize; /* max size of fs superblock, bytes */
- struct bsd_partition { /* the partition table */
- u_long p_size; /* number of sectors in partition */
- u_long p_offset; /* starting sector */
- u_long p_fsize; /* filesystem basic fragment size */
- u_char p_fstype; /* filesystem type, see below */
- u_char p_frag; /* filesystem fragments per block */
- u_short p_cpg; /* filesystem cylinders per group */
+ __u16 d_npartitions; /* number of partitions in following */
+ __u32 d_bbsize; /* size of boot area at sn0, bytes */
+ __u32 d_sbsize; /* max size of fs superblock, bytes */
+ struct xbsd_partition { /* the partition table */
+ __u32 p_size; /* number of sectors in partition */
+ __u32 p_offset; /* starting sector */
+ __u32 p_fsize; /* filesystem basic fragment size */
+ __u8 p_fstype; /* filesystem type, see below */
+ __u8 p_frag; /* filesystem fragments per block */
+ __u16 p_cpg; /* filesystem cylinders per group */
} d_partitions[BSD_MAXPARTITIONS]; /* actually may be more */
};
@@ -159,7 +143,7 @@ struct disklabel {
#define BSD_DSTYPE_GEOMETRY 0x10 /* drive params in label */
#ifdef DKTYPENAMES
-static char *bsd_dktypenames[] = {
+static char *xbsd_dktypenames[] = {
"unknown",
"SMD",
"MSCP",
@@ -173,7 +157,7 @@ static char *bsd_dktypenames[] = {
"floppy",
0
};
-#define BSD_DKMAXTYPES (sizeof(bsd_dktypenames) / sizeof(bsd_dktypenames[0]) - 1)
+#define BSD_DKMAXTYPES (sizeof(xbsd_dktypenames) / sizeof(xbsd_dktypenames[0]) - 1)
#endif
/*
@@ -189,7 +173,6 @@ static char *bsd_dktypenames[] = {
#define BSD_FS_V71K 5 /* V7 with 1K blocks (4.1, 2.9) */
#define BSD_FS_V8 6 /* Eighth Edition, 4K blocks */
#define BSD_FS_BSDFFS 7 /* 4.2BSD fast file system */
-#define BSD_FS_MSDOS 8 /* MS-DOS file system */
#define BSD_FS_BSDLFS 9 /* 4.4BSD log-structured file system */
#define BSD_FS_OTHER 10 /* in use, but unknown/unsupported */
#define BSD_FS_HPFS 11 /* OS/2 high-performance file system */
@@ -199,8 +182,15 @@ static char *bsd_dktypenames[] = {
#define BSD_FS_ADOS 14 /* AmigaDOS fast file system */
#define BSD_FS_HFS 15 /* Macintosh HFS */
+/* this is annoying, but it's also the way it is :-( */
+#ifdef __alpha__
+#define BSD_FS_EXT2 8 /* MS-DOS file system */
+#else
+#define BSD_FS_MSDOS 8 /* MS-DOS file system */
+#endif
+
#ifdef DKTYPENAMES
-static struct systypes bsd_fstypes[] = {
+static struct systypes xbsd_fstypes[] = {
{BSD_FS_UNUSED, "unused"},
{BSD_FS_SWAP, "swap"},
{BSD_FS_V6, "Version 6"},
@@ -209,7 +199,11 @@ static struct systypes bsd_fstypes[] = {
{BSD_FS_V71K, "4.1BSD"},
{BSD_FS_V8, "Eighth Edition"},
{BSD_FS_BSDFFS, "4.2BSD"},
+#ifdef __alpha__
+ {BSD_FS_EXT2, "ext2"},
+#else
{BSD_FS_MSDOS, "MS-DOS"},
+#endif
{BSD_FS_BSDLFS, "4.4LFS"},
{BSD_FS_OTHER, "unknown"},
{BSD_FS_HPFS, "HPFS"},
@@ -219,7 +213,7 @@ static struct systypes bsd_fstypes[] = {
{BSD_FS_HFS, "HFS"}
};
-#define BSD_FSMAXTYPES (sizeof(bsd_fstypes) / sizeof(struct systypes))
+#define BSD_FSMAXTYPES (sizeof(xbsd_fstypes) / sizeof(struct systypes))
#endif
/*
diff --git a/disk-utils/fsck.minix.8 b/disk-utils/fsck.minix.8
index 024e1b7a3..f0d853751 100644
--- a/disk-utils/fsck.minix.8
+++ b/disk-utils/fsck.minix.8
@@ -1,7 +1,7 @@
.\" Copyright 1992, 1993, 1994 Rickard E. Faith (faith@cs.unc.edu)
.\" May be freely distributed.
.\" " for hilit19
-.TH FSCK 8 "10 January 1994" "Linux 0.99" "Linux Programmer's Manual"
+.TH FSCK 8 "2 July 1996" "Util-Linux 2.6" "Linux Programmer's Manual"
.SH NAME
fsck.minix \- a file system consistency checker for Linux
.SH SYNOPSIS
@@ -22,10 +22,10 @@ searches for files).
The device will usually have the following form:
.nf
.RS
-/dev/hda[1-8]
-/dev/hdb[1-8]
-/dev/sda[1-8]
-/dev/sdb[1-8]
+/dev/hda[1-63] (IDE disk 1)
+/dev/hdb[1-63] (IDE disk 2)
+/dev/sda[1-15] (SCSI disk 1)
+/dev/sdb[1-15] (SCSI disk 2)
.RE
.fi
@@ -126,3 +126,9 @@ Added support for file system valid flag: Dr. Wettstein
.br
Check to prevent fsck of mounted filesystem added by Daniel Quinlan
(quinlan@yggdrasil.com)
+.br
+Minix v2 fs support by Andreas Schwab
+(schwab@issan.informatik.uni-dortmund.de), updated by Nicolai
+Langfeldt (janl@math.uio.no)
+.br
+Portability patch by Russell King (rmk@ecs.soton.ac.uk).
diff --git a/disk-utils/fsck.minix.c b/disk-utils/fsck.minix.c
index 209f9ce71..0e8dc64e0 100644
--- a/disk-utils/fsck.minix.c
+++ b/disk-utils/fsck.minix.c
@@ -37,11 +37,31 @@
* added program_version variable and output of
* program name and version number when program
* is executed.
- *
+ *
+ * 30.10.94 - added support for v2 filesystem
+ * (Andreas Schwab, schwab@issan.informatik.uni-dortmund.de)
+ *
* 10.12.94 - added test to prevent checking of mounted fs adapted
* from Theodore Ts'o's (tytso@athena.mit.edu) e2fsck
* program. (Daniel Quinlan, quinlan@yggdrasil.com)
*
+ * 01.07.96 - Fixed the v2 fs stuff to use the right #defines and such
+ * for modern libcs (janl@math.uio.no, Nicolai Langfeldt)
+ *
+ * 02.07.96 - Added C bit fiddling routines from rmk@ecs.soton.ac.uk
+ * (Russell King). He made them for ARM. It would seem
+ * that the ARM is powerfull enough to do this in C whereas
+ * i386 and m64k must use assembly to get it fast >:-)
+ * This should make minix fsck systemindependent.
+ * (janl@math.uio.no, Nicolai Langfeldt)
+ *
+ * 04.11.96 - Added minor fixes from Andreas Schwab to avoid compiler
+ * warnings. Added mc68k bitops from
+ * Joerg Dorchain <dorchain@mpi-sb.mpg.de>.
+ *
+ * 06.11.96 - Added v2 code submitted by Joerg Dorchain, but written by
+ * Andreas Schwab.
+ *
* I've had no time to add comments - hopefully the function names
* are comments enough. As with all file system checkers, this assumes
* the file system is quiescent - don't use it on a mounted device
@@ -62,6 +82,7 @@
*/
#include <stdio.h>
+#include <errno.h>
#include <unistd.h>
#include <string.h>
#include <fcntl.h>
@@ -73,9 +94,10 @@
#include <linux/fs.h>
#include <linux/minix_fs.h>
+#include "../version.h"
-#ifndef __GNUC__
-#error "needs gcc for the bitop-__asm__'s"
+#ifdef MINIX2_SUPER_MAGIC2
+#define HAVE_MINIX2 1
#endif
#ifndef __linux__
@@ -86,13 +108,19 @@
#define UPPER(size,n) ((size+((n)-1))/(n))
#define INODE_SIZE (sizeof(struct minix_inode))
-#define INODE_BLOCKS UPPER(INODES,MINIX_INODES_PER_BLOCK)
+#ifdef HAVE_MINIX2
+#define INODE_SIZE2 (sizeof(struct minix2_inode))
+#define INODE_BLOCKS UPPER(INODES, (version2 ? MINIX2_INODES_PER_BLOCK \
+ : MINIX_INODES_PER_BLOCK))
+#else
+#define INODE_BLOCKS UPPER(INODES, (MINIX_INODES_PER_BLOCK))
+#endif
#define INODE_BUFFER_SIZE (INODE_BLOCKS * BLOCK_SIZE)
#define BITS_PER_BLOCK (BLOCK_SIZE<<3)
static char * program_name = "fsck.minix";
-static char * program_version = "1.0 - 12/30/93";
+static char * program_version = "1.2 - 11/11/96";
static char * device_name = NULL;
static int IN;
static int repair=0, automatic=0, verbose=0, list=0, show=0, warn_mode=0,
@@ -104,6 +132,9 @@ static int changed = 0; /* flags if the filesystem has been changed */
static int errors_uncorrected = 0; /* flag if some error was not corrected */
static int dirsize = 16;
static int namelen = 14;
+static int version2 = 0;
+static struct termios termios;
+static int termios_set = 0;
/* File-name data */
#define MAX_DEPTH 50
@@ -112,10 +143,15 @@ static char name_list[MAX_DEPTH][NAME_MAX+1];
static char * inode_buffer = NULL;
#define Inode (((struct minix_inode *) inode_buffer)-1)
+#define Inode2 (((struct minix2_inode *) inode_buffer)-1)
static char super_block_buffer[BLOCK_SIZE];
#define Super (*(struct minix_super_block *)super_block_buffer)
#define INODES ((unsigned long)Super.s_ninodes)
-#define ZONES ((unsigned long)Super.s_nzones)
+#ifdef HAVE_MINIX2
+#define ZONES ((unsigned long)(version2 ? Super.s_zones : Super.s_nzones))
+#else
+#define ZONES ((unsigned long)(Super.s_nzones))
+#endif
#define IMAPS ((unsigned long)Super.s_imap_blocks)
#define ZMAPS ((unsigned long)Super.s_zmap_blocks)
#define FIRSTZONE ((unsigned long)Super.s_firstdatazone)
@@ -131,20 +167,9 @@ static unsigned char * inode_count = NULL;
static unsigned char * zone_count = NULL;
void recursive_check(unsigned int ino);
+void recursive_check2(unsigned int ino);
-#define bitop(name,op) \
-static inline int name(char * addr,unsigned int nr) \
-{ \
-int __res; \
-__asm__ __volatile__("bt" op "l %1,%2; adcl $0,%0" \
-:"=g" (__res) \
-:"r" (nr),"m" (*(addr)),"0" (0)); \
-return __res; \
-}
-
-bitop(bit,"")
-bitop(setbit,"s")
-bitop(clrbit,"r")
+#include "bitops.h"
#define inode_in_use(x) (bit(inode_map,(x)))
#define zone_in_use(x) (bit(zone_map,(x)-FIRSTZONE+1))
@@ -155,14 +180,12 @@ bitop(clrbit,"r")
#define mark_zone(x) (setbit(zone_map,(x)-FIRSTZONE+1),changed=1)
#define unmark_zone(x) (clrbit(zone_map,(x)-FIRSTZONE+1),changed=1)
-/*
- * Volatile to let gcc know that this doesn't return. When trying
- * to compile this under minix, volatile gives a warning, as
- * exit() isn't defined as volatile under minix.
- */
-volatile void fatal_error(const char * fmt_string, int status)
+void fatal_error(const char *, int) __attribute__ ((noreturn));
+void fatal_error(const char * fmt_string, int status)
{
fprintf(stderr,fmt_string,program_name,device_name);
+ if (termios_set)
+ tcsetattr(0, TCSANOW, &termios);
exit(status);
}
@@ -179,6 +202,8 @@ void print_current_name(void)
while (i<name_depth)
printf("/%.*s",namelen,name_list[i++]);
+ if (i == 0)
+ printf ("/");
}
int ask(const char * string,int def)
@@ -292,6 +317,26 @@ int check_zone_nr(unsigned short * nr, int * corrected)
return 0;
}
+
+int check_zone_nr2 (unsigned int *nr, int *corrected)
+{
+ if (!*nr)
+ return 0;
+ if (*nr < FIRSTZONE)
+ printf ("Zone nr < FIRSTZONE in file `");
+ else if (*nr >= ZONES)
+ printf ("Zone nr >= ZONES in file `");
+ else
+ return *nr;
+ print_current_name ();
+ printf ("'.");
+ if (ask ("Remove block", 1)) {
+ *nr = 0;
+ *corrected = 1;
+ }
+ return 0;
+}
+
/*
* read-block reads block nr into the buffer at addr.
*/
@@ -378,6 +423,65 @@ int map_block(struct minix_inode * inode, unsigned int blknr)
return result;
}
+#ifdef HAVE_MINIX2
+int map_block2 (struct minix2_inode *inode, unsigned int blknr)
+{
+ unsigned int ind[BLOCK_SIZE >> 2];
+ unsigned int dind[BLOCK_SIZE >> 2];
+ unsigned int tind[BLOCK_SIZE >> 2];
+ int blk_chg, block, result;
+
+ if (blknr < 7)
+ return check_zone_nr2 (inode->i_zone + blknr, &changed);
+ blknr -= 7;
+ if (blknr < 256) {
+ block = check_zone_nr2 (inode->i_zone + 7, &changed);
+ read_block (block, (char *) ind);
+ blk_chg = 0;
+ result = check_zone_nr2 (blknr + ind, &blk_chg);
+ if (blk_chg)
+ write_block (block, (char *) ind);
+ return result;
+ }
+ blknr -= 256;
+ if (blknr >= 256 * 256) {
+ block = check_zone_nr2 (inode->i_zone + 8, &changed);
+ read_block (block, (char *) dind);
+ blk_chg = 0;
+ result = check_zone_nr2 (dind + blknr / 256, &blk_chg);
+ if (blk_chg)
+ write_block (block, (char *) dind);
+ block = result;
+ read_block (block, (char *) ind);
+ blk_chg = 0;
+ result = check_zone_nr2 (ind + blknr % 256, &blk_chg);
+ if (blk_chg)
+ write_block (block, (char *) ind);
+ return result;
+ }
+ blknr -= 256 * 256;
+ block = check_zone_nr2 (inode->i_zone + 9, &changed);
+ read_block (block, (char *) tind);
+ blk_chg = 0;
+ result = check_zone_nr2 (tind + blknr / (256 * 256), &blk_chg);
+ if (blk_chg)
+ write_block (block, (char *) tind);
+ block = result;
+ read_block (block, (char *) dind);
+ blk_chg = 0;
+ result = check_zone_nr2 (dind + (blknr / 256) % 256, &blk_chg);
+ if (blk_chg)
+ write_block (block, (char *) dind);
+ block = result;
+ read_block (block, (char *) ind);
+ blk_chg = 0;
+ result = check_zone_nr2 (ind + blknr % 256, &blk_chg);
+ if (blk_chg)
+ write_block (block, (char *) ind);
+ return result;
+}
+#endif
+
void write_super_block(void)
{
/*
@@ -411,10 +515,31 @@ void write_tables(void)
die("Unable to write inodes");
}
-void read_tables(void)
+void get_dirsize (void)
+{
+ int block;
+ char blk[BLOCK_SIZE];
+ int size;
+
+#if HAVE_MINIX2
+ if (version2)
+ block = Inode2[ROOT_INO].i_zone[0];
+ else
+#endif
+ block = Inode[ROOT_INO].i_zone[0];
+ read_block (block, blk);
+ for (size = 16; size < BLOCK_SIZE; size <<= 1) {
+ if (strcmp (blk + size + 2, "..") == 0) {
+ dirsize = size;
+ namelen = size - 2;
+ return;
+ }
+ }
+ /* use defaults */
+}
+
+void read_superblock(void)
{
- memset(inode_map,0,sizeof(inode_map));
- memset(zone_map,0,sizeof(zone_map));
if (BLOCK_SIZE != lseek(IN, BLOCK_SIZE, SEEK_SET))
die("seek failed");
if (BLOCK_SIZE != read(IN, super_block_buffer, BLOCK_SIZE))
@@ -422,9 +547,21 @@ void read_tables(void)
if (MAGIC == MINIX_SUPER_MAGIC) {
namelen = 14;
dirsize = 16;
+ version2 = 0;
} else if (MAGIC == MINIX_SUPER_MAGIC2) {
namelen = 30;
dirsize = 32;
+ version2 = 0;
+#ifdef HAVE_MINIX2
+ } else if (MAGIC == MINIX2_SUPER_MAGIC) {
+ namelen = 14;
+ dirsize = 16;
+ version2 = 1;
+ } else if (MAGIC == MINIX2_SUPER_MAGIC2) {
+ namelen = 30;
+ dirsize = 32;
+ version2 = 1;
+#endif
} else
die("bad magic number in super-block");
if (ZONESIZE != 0 || BLOCK_SIZE != 1024)
@@ -433,6 +570,12 @@ void read_tables(void)
die("bad s_imap_blocks field in super-block");
if (!ZMAPS || ZMAPS > MINIX_Z_MAP_SLOTS)
die("bad s_zmap_blocks field in super-block");
+}
+
+void read_tables(void)
+{
+ memset(inode_map,0,sizeof(inode_map));
+ memset(zone_map,0,sizeof(zone_map));
inode_buffer = malloc(INODE_BUFFER_SIZE);
if (!inode_buffer)
die("Unable to allocate buffer for inodes");
@@ -452,12 +595,13 @@ void read_tables(void)
printf("Warning: Firstzone != Norm_firstzone\n");
errors_uncorrected = 1;
}
+ get_dirsize ();
if (show) {
- printf("%d inodes\n",INODES);
- printf("%d blocks\n",ZONES);
- printf("Firstdatazone=%d (%d)\n",FIRSTZONE,NORM_FIRSTZONE);
+ printf("%ld inodes\n",INODES);
+ printf("%ld blocks\n",ZONES);
+ printf("Firstdatazone=%ld (%ld)\n",FIRSTZONE,NORM_FIRSTZONE);
printf("Zonesize=%d\n",BLOCK_SIZE<<ZONESIZE);
- printf("Maxsize=%d\n",MAXSIZE);
+ printf("Maxsize=%ld\n",MAXSIZE);
printf("Filesystem state=%d\n", Super.s_state);
printf("namelen=%d\n\n",namelen);
}
@@ -512,6 +656,55 @@ struct minix_inode * get_inode(unsigned int nr)
return inode;
}
+#ifdef HAVE_MINIX2
+struct minix2_inode *
+get_inode2 (unsigned int nr)
+{
+ struct minix2_inode *inode;
+
+ if (!nr || nr >= INODES)
+ return NULL;
+ total++;
+ inode = Inode2 + nr;
+ if (!inode_count[nr]) {
+ if (!inode_in_use (nr)) {
+ printf ("Inode %d marked not used, but used for file '", nr);
+ print_current_name ();
+ printf ("'\n");
+ if (repair) {
+ if (ask ("Mark in use", 1))
+ mark_inode (nr);
+ else
+ errors_uncorrected = 1;
+ }
+ }
+ if (S_ISDIR (inode->i_mode))
+ directory++;
+ else if (S_ISREG (inode->i_mode))
+ regular++;
+ else if (S_ISCHR (inode->i_mode))
+ chardev++;
+ else if (S_ISBLK (inode->i_mode))
+ blockdev++;
+ else if (S_ISLNK (inode->i_mode))
+ symlinks++;
+ else if (S_ISSOCK (inode->i_mode));
+ else if (S_ISFIFO (inode->i_mode));
+ else {
+ print_current_name ();
+ printf (" has mode %05o\n", inode->i_mode);
+ }
+ } else
+ links++;
+ if (!++inode_count[nr]) {
+ printf ("Warning: inode count too big.\n");
+ inode_count[nr]--;
+ errors_uncorrected = 1;
+ }
+ return inode;
+}
+#endif
+
void check_root(void)
{
struct minix_inode * inode = Inode + ROOT_INO;
@@ -520,6 +713,16 @@ void check_root(void)
die("root inode isn't a directory");
}
+#ifdef HAVE_MINIX2
+void check_root2 (void)
+{
+ struct minix2_inode *inode = Inode2 + ROOT_INO;
+
+ if (!inode || !S_ISDIR (inode->i_mode))
+ die ("root inode isn't a directory");
+}
+#endif
+
static int add_zone(unsigned short * znr, int * corrected)
{
int result;
@@ -553,6 +756,40 @@ static int add_zone(unsigned short * znr, int * corrected)
return block;
}
+
+static int add_zone2 (unsigned int *znr, int *corrected)
+{
+ int result;
+ int block;
+
+ result = 0;
+ block = check_zone_nr2 (znr, corrected);
+ if (!block)
+ return 0;
+ if (zone_count[block]) {
+ printf ("Block has been used before. Now in file `");
+ print_current_name ();
+ printf ("'.");
+ if (ask ("Clear", 1)) {
+ *znr = 0;
+ block = 0;
+ *corrected = 1;
+ }
+ }
+ if (!block)
+ return 0;
+ if (!zone_in_use (block)) {
+ printf ("Block %d in file `", block);
+ print_current_name ();
+ printf ("' is marked not in use.");
+ if (ask ("Correct", 1))
+ mark_zone (block);
+ }
+ if (!++zone_count[block])
+ zone_count[block]--;
+ return block;
+}
+
static void add_zone_ind(unsigned short * znr, int * corrected)
{
static char blk[BLOCK_SIZE];
@@ -569,6 +806,22 @@ static void add_zone_ind(unsigned short * znr, int * corrected)
write_block(block, blk);
}
+static void add_zone_ind2 (unsigned int *znr, int *corrected)
+{
+ static char blk[BLOCK_SIZE];
+ int i, chg_blk = 0;
+ int block;
+
+ block = add_zone2 (znr, corrected);
+ if (!block)
+ return;
+ read_block (block, blk);
+ for (i = 0; i < BLOCK_SIZE >> 2; i++)
+ add_zone2 (i + (unsigned int *) blk, &chg_blk);
+ if (chg_blk)
+ write_block (block, blk);
+}
+
static void add_zone_dind(unsigned short * znr, int * corrected)
{
static char blk[BLOCK_SIZE];
@@ -585,6 +838,40 @@ static void add_zone_dind(unsigned short * znr, int * corrected)
write_block(block, blk);
}
+static void
+add_zone_dind2 (unsigned int *znr, int *corrected)
+{
+ static char blk[BLOCK_SIZE];
+ int i, blk_chg = 0;
+ int block;
+
+ block = add_zone2 (znr, corrected);
+ if (!block)
+ return;
+ read_block (block, blk);
+ for (i = 0; i < BLOCK_SIZE >> 2; i++)
+ add_zone_ind2 (i + (unsigned int *) blk, &blk_chg);
+ if (blk_chg)
+ write_block (block, blk);
+}
+
+static void
+add_zone_tind2 (unsigned int *znr, int *corrected)
+{
+ static char blk[BLOCK_SIZE];
+ int i, blk_chg = 0;
+ int block;
+
+ block = add_zone2 (znr, corrected);
+ if (!block)
+ return;
+ read_block (block, blk);
+ for (i = 0; i < BLOCK_SIZE >> 2; i++)
+ add_zone_dind2 (i + (unsigned int *) blk, &blk_chg);
+ if (blk_chg)
+ write_block (block, blk);
+}
+
void check_zones(unsigned int i)
{
struct minix_inode * inode;
@@ -603,6 +890,28 @@ void check_zones(unsigned int i)
add_zone_dind(8 + inode->i_zone, &changed);
}
+#ifdef HAVE_MINIX2
+void
+check_zones2 (unsigned int i)
+{
+ struct minix2_inode *inode;
+
+ if (!i || i >= INODES)
+ return;
+ if (inode_count[i] > 1) /* have we counted this file already? */
+ return;
+ inode = Inode2 + i;
+ if (!S_ISDIR (inode->i_mode) && !S_ISREG (inode->i_mode)
+ && !S_ISLNK (inode->i_mode))
+ return;
+ for (i = 0; i < 7; i++)
+ add_zone2 (i + inode->i_zone, &changed);
+ add_zone_ind2 (7 + inode->i_zone, &changed);
+ add_zone_dind2 (8 + inode->i_zone, &changed);
+ add_zone_tind2 (9 + inode->i_zone, &changed);
+}
+#endif
+
void check_file(struct minix_inode * dir, unsigned int offset)
{
static char blk[BLOCK_SIZE];
@@ -625,7 +934,11 @@ void check_file(struct minix_inode * dir, unsigned int offset)
}
ino = 0;
}
+ if (name_depth < MAX_DEPTH)
+ strncpy (name_list[name_depth], name, namelen);
+ name_depth++;
inode = get_inode(ino);
+ name_depth--;
if (!offset)
if (!inode || strcmp(".",name)) {
print_current_name();
@@ -659,6 +972,71 @@ void check_file(struct minix_inode * dir, unsigned int offset)
return;
}
+#ifdef HAVE_MINIX2
+void
+check_file2 (struct minix2_inode *dir, unsigned int offset)
+{
+ static char blk[BLOCK_SIZE];
+ struct minix2_inode *inode;
+ int ino;
+ char *name;
+ int block;
+
+ block = map_block2 (dir, offset / BLOCK_SIZE);
+ read_block (block, blk);
+ name = blk + (offset % BLOCK_SIZE) + 2;
+ ino = *(unsigned short *) (name - 2);
+ if (ino >= INODES) {
+ print_current_name ();
+ printf (" contains a bad inode number for file '");
+ printf ("%.*s'.", namelen, name);
+ if (ask (" Remove", 1)) {
+ *(unsigned short *) (name - 2) = 0;
+ write_block (block, blk);
+ }
+ ino = 0;
+ }
+ if (name_depth < MAX_DEPTH)
+ strncpy (name_list[name_depth], name, namelen);
+ name_depth++;
+ inode = get_inode2 (ino);
+ name_depth--;
+ if (!offset) {
+ if (!inode || strcmp (".", name)) {
+ print_current_name ();
+ printf (": bad directory: '.' isn't first\n");
+ errors_uncorrected = 1;
+ } else
+ return;
+ }
+ if (offset == dirsize) {
+ if (!inode || strcmp ("..", name)) {
+ print_current_name ();
+ printf (": bad directory: '..' isn't second\n");
+ errors_uncorrected = 1;
+ } else
+ return;
+ }
+ if (!inode)
+ return;
+ name_depth++;
+ if (list) {
+ if (verbose)
+ printf ("%6d %07o %3d ", ino, inode->i_mode, inode->i_nlinks);
+ print_current_name ();
+ if (S_ISDIR (inode->i_mode))
+ printf (":\n");
+ else
+ printf ("\n");
+ }
+ check_zones2 (ino);
+ if (inode && S_ISDIR (inode->i_mode))
+ recursive_check2 (ino);
+ name_depth--;
+ return;
+}
+#endif
+
void recursive_check(unsigned int ino)
{
struct minix_inode * dir;
@@ -667,7 +1045,7 @@ void recursive_check(unsigned int ino)
dir = Inode + ino;
if (!S_ISDIR(dir->i_mode))
die("internal error");
- if (dir->i_size < 32) {
+ if (dir->i_size < 2 * dirsize) {
print_current_name();
printf(": bad directory: size<32");
errors_uncorrected = 1;
@@ -676,6 +1054,26 @@ void recursive_check(unsigned int ino)
check_file(dir,offset);
}
+#ifdef HAVE_MINIX2
+void
+recursive_check2 (unsigned int ino)
+{
+ struct minix2_inode *dir;
+ unsigned int offset;
+
+ dir = Inode2 + ino;
+ if (!S_ISDIR (dir->i_mode))
+ die ("internal error");
+ if (dir->i_size < 2 * dirsize) {
+ print_current_name ();
+ printf (": bad directory: size < 32");
+ errors_uncorrected = 1;
+ }
+ for (offset = 0; offset < dir->i_size; offset += dirsize)
+ check_file2 (dir, offset);
+}
+#endif
+
int bad_zone(int i)
{
char buffer[1024];
@@ -736,6 +1134,59 @@ void check_counts(void)
}
}
+#ifdef HAVE_MINIX2
+void
+check_counts2 (void)
+{
+ int i;
+
+ for (i = 1; i < INODES; i++) {
+ if (!inode_in_use (i) && Inode2[i].i_mode && warn_mode) {
+ printf ("Inode %d mode not cleared.", i);
+ if (ask ("Clear", 1)) {
+ Inode2[i].i_mode = 0;
+ changed = 1;
+ }
+ }
+ if (!inode_count[i]) {
+ if (!inode_in_use (i))
+ continue;
+ printf ("Inode %d not used, marked used in the bitmap.", i);
+ if (ask ("Clear", 1))
+ unmark_inode (i);
+ continue;
+ }
+ if (!inode_in_use (i)) {
+ printf ("Inode %d used, marked unused in the bitmap.", i);
+ if (ask ("Set", 1))
+ mark_inode (i);
+ }
+ if (Inode2[i].i_nlinks != inode_count[i]) {
+ printf ("Inode %d (mode = %07o), i_nlinks=%d, counted=%d.",
+ i, Inode2[i].i_mode, Inode2[i].i_nlinks, inode_count[i]);
+ if (ask ("Set i_nlinks to count", 1)) {
+ Inode2[i].i_nlinks = inode_count[i];
+ changed = 1;
+ }
+ }
+ }
+ for (i = FIRSTZONE; i < ZONES; i++) {
+ if (zone_in_use (i) == zone_count[i])
+ continue;
+ if (!zone_count[i]) {
+ if (bad_zone (i))
+ continue;
+ printf ("Zone %d: marked in use, no file uses it.", i);
+ if (ask ("Unmark", 1))
+ unmark_zone (i);
+ continue;
+ }
+ printf ("Zone %d: %sin use, counted=%d\n",
+ i, zone_in_use (i) ? "" : "not ", zone_count[i]);
+ }
+}
+#endif
+
void check(void)
{
memset(inode_count,0,INODES*sizeof(*inode_count));
@@ -745,9 +1196,21 @@ void check(void)
check_counts();
}
+#ifdef HAVE_MINIX2
+void
+check2 (void)
+{
+ memset (inode_count, 0, INODES * sizeof (*inode_count));
+ memset (zone_count, 0, ZONES * sizeof (*zone_count));
+ check_zones2 (ROOT_INO);
+ recursive_check2 (ROOT_INO);
+ check_counts2 ();
+}
+#endif
+
int main(int argc, char ** argv)
{
- struct termios termios,tmp;
+ struct termios tmp;
int count;
int retcode = 0;
@@ -755,6 +1218,10 @@ int main(int argc, char ** argv)
program_name = *argv;
if (INODE_SIZE * MINIX_INODES_PER_BLOCK != BLOCK_SIZE)
die("bad inode size");
+#ifdef HAVE_MINIX2
+ if (INODE_SIZE2 * MINIX2_INODES_PER_BLOCK != BLOCK_SIZE)
+ die("bad v2 inode size");
+#endif
while (argc-- > 1) {
argv++;
if (argv[0][0] != '-')
@@ -780,17 +1247,13 @@ int main(int argc, char ** argv)
if (repair && !automatic) {
if (!isatty(0) || !isatty(1))
die("need terminal for interactive repairs");
- tcgetattr(0,&termios);
- tmp = termios;
- tmp.c_lflag &= ~(ICANON|ECHO);
- tcsetattr(0,TCSANOW,&tmp);
}
IN = open(device_name,repair?O_RDWR:O_RDONLY);
if (IN < 0)
die("unable to open '%s'");
for (count=0 ; count<3 ; count++)
sync();
- read_tables();
+ read_superblock();
/*
* Determine whether or not we should continue with the checking.
@@ -798,14 +1261,13 @@ int main(int argc, char ** argv)
* flags and whether or not the -f switch was specified on the
* command line.
*/
- printf("%s, %s\n", program_name, program_version);
+ printf("%s, %s / %s\n", program_name, program_version,
+ util_linux_version);
if ( !(Super.s_state & MINIX_ERROR_FS) &&
(Super.s_state & MINIX_VALID_FS) &&
!force ) {
if (repair)
printf("%s is clean, no check.\n", device_name);
- if (repair && !automatic)
- tcsetattr(0,TCSANOW,&termios);
return retcode;
}
else if (force)
@@ -814,20 +1276,38 @@ int main(int argc, char ** argv)
printf("Filesystem on %s is dirty, needs checking.\n",\
device_name);
- check_root();
- check();
+ read_tables();
+
+ if (repair && !automatic) {
+ tcgetattr(0,&termios);
+ tmp = termios;
+ tmp.c_lflag &= ~(ICANON|ECHO);
+ tcsetattr(0,TCSANOW,&tmp);
+ termios_set = 1;
+ }
+
+#if HAVE_MINIX2
+ if (version2) {
+ check_root2 ();
+ check2 ();
+ } else
+#endif
+ {
+ check_root();
+ check();
+ }
if (verbose) {
int i, free;
for (i=1,free=0 ; i < INODES ; i++)
if (!inode_in_use(i))
free++;
- printf("\n%6d inodes used (%d%%)\n",(INODES-free-1),
+ printf("\n%6ld inodes used (%ld%%)\n",(INODES-free-1),
100*(INODES-free-1)/(INODES-1));
for (i=FIRSTZONE,free=0 ; i < ZONES ; i++)
if (!zone_in_use(i))
free++;
- printf("%6d zones used (%d%%)\n",(ZONES-free),
+ printf("%6ld zones used (%ld%%)\n",(ZONES-free),
100*(ZONES-free)/ZONES);
printf("\n%6d regular files\n"
"%6d directories\n"
diff --git a/disk-utils/llseek.c b/disk-utils/llseek.c
index 3e59ec953..dcbfb2a45 100644
--- a/disk-utils/llseek.c
+++ b/disk-utils/llseek.c
@@ -11,26 +11,39 @@
#include <errno.h>
#include <unistd.h>
-#include <linux/unistd.h>
+
#ifndef FOR_UTIL_LINUX
+
#include "et/com_err.h"
#include "ext2fs/io.h"
-#endif
-#ifdef FOR_UTIL_LINUX
+#else /* FOR_UTIL_LINUX */
+
#if defined(__GNUC__) || defined(HAS_LONG_LONG)
-typedef long long ext2_loff_t;
+typedef long long ext2_loff_t;
#else
-typedef long ext2_loff_t;
+typedef long ext2_loff_t;
#endif
-extern ext2_loff_t ext2_llseek(unsigned int fd,
- ext2_loff_t offset,
- unsigned int origin);
-#endif
+ext2_loff_t ext2_llseek (unsigned int, ext2_loff_t, unsigned int);
+
+#endif /* FOR_UTIL_LINUX */
#ifdef __linux__
+#ifdef HAVE_LLSEEK
+#include <syscall.h>
+
+#else /* HAVE_LLSEEK */
+
+#ifdef __alpha__
+
+#define my_llseek lseek
+
+#elif __i386__
+
+#include <linux/unistd.h>
+
#ifndef __NR__llseek
#define __NR__llseek 140
#endif
@@ -42,54 +55,66 @@ static _syscall5(int,_llseek,unsigned int,fd,unsigned long,offset_high,
unsigned long, offset_low,ext2_loff_t *,result,
unsigned int, origin)
+static ext2_loff_t my_llseek (unsigned int fd, ext2_loff_t offset,
+ unsigned int origin)
+{
+ ext2_loff_t result;
+ int retval;
+
+ retval = _llseek (fd, ((unsigned long long) offset) >> 32,
+ ((unsigned long long) offset) & 0xffffffff,
+ &result, origin);
+ return (retval == -1 ? (ext2_loff_t) retval : result);
+}
+
+#else
+
+#error "llseek() is not available"
+
+#endif /* __alpha__ */
+
+#endif /* HAVE_LLSEEK */
+
ext2_loff_t ext2_llseek (unsigned int fd, ext2_loff_t offset,
unsigned int origin)
{
- unsigned long offset_high;
- unsigned long offset_low;
ext2_loff_t result;
- int retval;
static int do_compat = 0;
+ if ((sizeof(off_t) >= sizeof(ext2_loff_t)) ||
+ (offset < ((ext2_loff_t) 1 << ((sizeof(off_t)*8) -1))))
+ return lseek(fd, (off_t) offset, origin);
+
if (do_compat) {
- compat_lseek:
- if ((sizeof(off_t) < sizeof(ext2_loff_t)) &&
- (offset >= ((ext2_loff_t) 1 << ((sizeof(off_t)*8) -1)))) {
- errno = -EINVAL;
- return -1;
- }
- return lseek (fd, (off_t) offset, origin);
+ errno = EINVAL;
+ return -1;
}
- offset_high = ((unsigned long long) offset) >> 32;
- offset_low = ((unsigned long long) offset) & 0xffffffff;
- retval = _llseek (fd, offset_high, offset_low, &result, origin);
- if (retval == -1 && errno == ENOSYS) {
+ result = my_llseek (fd, offset, origin);
+ if (result == -1 && errno == ENOSYS) {
/*
* Just in case this code runs on top of an old kernel
* which does not support the llseek system call
*/
do_compat++;
- goto compat_lseek;
+ errno = EINVAL;
}
- if (retval == -1)
- result = -1;
return result;
}
-#else
+#else /* !linux */
ext2_loff_t ext2_llseek (unsigned int fd, ext2_loff_t offset,
unsigned int origin)
{
if ((sizeof(off_t) < sizeof(ext2_loff_t)) &&
(offset >= ((ext2_loff_t) 1 << ((sizeof(off_t)*8) -1)))) {
- errno = -EINVAL;
+ errno = EINVAL;
return -1;
}
return lseek (fd, (off_t) offset, origin);
}
-#endif
+#endif /* linux */
diff --git a/disk-utils/mkfs.c b/disk-utils/mkfs.c
index 78a3a0c2f..8d4671915 100644
--- a/disk-utils/mkfs.c
+++ b/disk-utils/mkfs.c
@@ -7,6 +7,9 @@
* Authors: David Engel, <david@ods.com>
* Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
* Ron Sommeling, <sommel@sci.kun.nl>
+ *
+ * Mon Jul 1 18:52:58 1996: janl@math.uio.no (Nicolai Langfeldt):
+ * Incorporated fix by Jonathan Kamens <jik@annex-1-slip-jik.cam.ov.com>
*/
@@ -17,10 +20,10 @@
#include <limits.h>
-#define VERSION "1.9"
+#define VERSION "1.10"
#ifndef DEFAULT_FSTYPE
-# define DEFAULT_FSTYPE "minix"
+# define DEFAULT_FSTYPE "ext2"
#endif
#define SEARCH_PATH "PATH=/sbin:/sbin/fs.d:/sbin/fs:/etc/fs:/etc"
@@ -44,6 +47,7 @@ int main(int argc, char *argv[])
fstype = optarg;
break;
default:
+ optind--;
more = 1;
break; /* start of specific arguments */
}
diff --git a/disk-utils/mkfs.minix.8 b/disk-utils/mkfs.minix.8
index 3c59bb073..8f9e70242 100644
--- a/disk-utils/mkfs.minix.8
+++ b/disk-utils/mkfs.minix.8
@@ -1,21 +1,19 @@
.\" Copyright 1992, 1993, 1994 Rickard E. Faith (faith@cs.unc.edu)
.\" May be freely distributed.
.\" " for emacs hilit19 mode
-.TH MKFS 8 "10 January 1994" "Linux 0.99" "Linux Programmer's Manual"
+.TH MKFS 8 "2 July 1996" "Util-linux 2.6" "Linux System Administrator's Manual"
.SH NAME
mkfs \- make a Linux MINIX filesystem
.SH SYNOPSIS
-.BR "mkfs [ \-c ] [ \-n"
+.BR "mkfs [ \-c | \-l filename ] [ \-n"
namelength
.B ] [ \-i
inodecount
+.B ] [ \-v ]
+device
+.B [
+size-in-blocks
.B ]
-device size-in-blocks
-.br
-.B "mkfs [ \-l"
-filename
-.B ]
-device size-in-blocks
.SH DESCRIPTION
.B mkfs
creates a Linux MINIX file-system on a device (usually a disk partition).
@@ -26,10 +24,10 @@ is usually of the following form:
.nf
.RS
-/dev/hda[1-8]
-/dev/hdb[1-8]
-/dev/sda[1-8]
-/dev/sdb[1-8]
+/dev/hda[1-8] (IDE disk 1)
+/dev/hdb[1-8] (IDE disk 2)
+/dev/sda[1-8] (SCSI disk 1)
+/dev/sdb[1-8] (SCSI disk 2)
.RE
.fi
@@ -38,8 +36,11 @@ The
parameter is the desired size of the file system, in blocks. This
information can be determined from the
.BR fdisk (8)
-program. Only block counts strictly greater than 10 and strictly less than
-65536 are allowed.
+or
+.BR cfdisk (8)
+program. If omitted it will be determined automaticaly. Only block
+counts strictly greater than 10 and strictly less than 65536 are
+allowed.
.SH OPTIONS
.TP
.B \-c
@@ -62,6 +63,9 @@ Read the bad blocks list from
.IR filename .
The file has one bad block number per line. The count of bad blocks read
is printed.
+.TP
+.B \-v
+Make a Minix version 2 filesystem.
.SH "EXIT CODES"
The exit code returned by
.B mkfs.minix
@@ -77,8 +81,8 @@ Usage or syntax error
.BR mkefs (8),
.BR efsck (8),
.BR reboot (8)
-.SH AUTHOR
-Linus Torvalds (torvalds@cs.helsinki.fi)
+.SH AUTHORS
+Stared by Linus Torvalds (torvalds@cs.helsinki.fi).
.br
Error code values by Rik Faith (faith@cs.unc.edu)
.br
@@ -89,3 +93,9 @@ Support for the file system valid flag by Dr. Wettstein
.br
Check to prevent mkfs of mounted filesystem and boot sector clearing
by Daniel Quinlan (quinlan@yggdrasil.com)
+.br
+Minix v2 support by Andreas Schwab
+(schwab@issan.informatik.uni-dortmund.de), updated by Nicolai
+Langfeldt (janl@math.uio.no)
+.br
+Portability patch by Russell King. \ No newline at end of file
diff --git a/disk-utils/mkfs.minix.c b/disk-utils/mkfs.minix.c
index 87c7c1270..403a278c9 100644
--- a/disk-utils/mkfs.minix.c
+++ b/disk-utils/mkfs.minix.c
@@ -31,6 +31,9 @@
*
* 03.01.94 - Added support for file system valid flag.
* (Dr. Wettstein, greg%wind.uucp@plains.nodak.edu)
+ *
+ * 30.10.94 - added support for v2 filesystem
+ * (Andreas Schwab, schwab@issan.informatik.uni-dortmund.de)
*
* 09.11.94 - Added test to prevent overwrite of mounted fs adapted
* from Theodore Ts'o's (tytso@athena.mit.edu) mke2fs
@@ -40,13 +43,16 @@
* the filesystem is not misidentified as a MS-DOS FAT filesystem.
* (Daniel Quinlan, quinlan@yggdrasil.com)
*
- * Usage: mkfs [-c] [-nXX] [-iXX] device size-in-blocks
- * mkfs [-l filename ] device size-in-blocks
+ * 02.07.96 - Added small patch from Russell King to make the program a
+ * good deal more portable (janl@math.uio.no)
+ *
+ * Usage: mkfs [-c | -l filename ] [-v] [-nXX] [-iXX] device [size-in-blocks]
*
* -c for readablility checking (SLOW!)
* -l for getting a list of bad blocks from a file.
* -n for namelength (currently the kernel only uses 14 or 30)
* -i for number of inodes
+ * -v for v2 filesystem
*
* The device may be a block device or a image of one, but this isn't
* enforced (but it's not much fun on a character device :-).
@@ -62,11 +68,16 @@
#include <stdlib.h>
#include <termios.h>
#include <sys/stat.h>
+#include <sys/ioctl.h>
#include <mntent.h>
#include <linux/fs.h>
#include <linux/minix_fs.h>
+#ifdef MINIX2_SUPER_MAGIC2
+#define HAVE_MINIX2 1
+#endif
+
#ifndef __GNUC__
#error "needs gcc for the bitop-__asm__'s"
#endif
@@ -83,7 +94,13 @@
#define UPPER(size,n) ((size+((n)-1))/(n))
#define INODE_SIZE (sizeof(struct minix_inode))
-#define INODE_BLOCKS UPPER(INODES,MINIX_INODES_PER_BLOCK)
+#ifdef HAVE_MINIX2
+#define INODE_SIZE2 (sizeof(struct minix2_inode))
+#define INODE_BLOCKS UPPER(INODES, (version2 ? MINIX2_INODES_PER_BLOCK \
+ : MINIX_INODES_PER_BLOCK))
+#else
+#define INODE_BLOCKS UPPER(INODES, (MINIX_INODES_PER_BLOCK))
+#endif
#define INODE_BUFFER_SIZE (INODE_BLOCKS * BLOCK_SIZE)
#define BITS_PER_BLOCK (BLOCK_SIZE<<3)
@@ -96,18 +113,26 @@ static int check = 0;
static int badblocks = 0;
static int namelen = 30; /* default (changed to 30, per Linus's
suggestion, Sun Nov 21 08:05:07 1993) */
-static int dirsize = 16;
-static int magic = MINIX_SUPER_MAGIC;
+static int dirsize = 32;
+static int magic = MINIX_SUPER_MAGIC2;
+static int version2 = 0;
static char root_block[BLOCK_SIZE] = "\0";
static char * inode_buffer = NULL;
#define Inode (((struct minix_inode *) inode_buffer)-1)
+#ifdef HAVE_MINIX2
+#define Inode2 (((struct minix2_inode *) inode_buffer)-1)
+#endif
static char super_block_buffer[BLOCK_SIZE];
static char boot_block_buffer[512];
#define Super (*(struct minix_super_block *)super_block_buffer)
#define INODES ((unsigned long)Super.s_ninodes)
-#define ZONES ((unsigned long)Super.s_nzones)
+#ifdef HAVE_MINIX2
+#define ZONES ((unsigned long)(version2 ? Super.s_zones : Super.s_nzones))
+#else
+#define ZONES ((unsigned long)(Super.s_nzones))
+#endif
#define IMAPS ((unsigned long)Super.s_imap_blocks)
#define ZMAPS ((unsigned long)Super.s_zmap_blocks)
#define FIRSTZONE ((unsigned long)Super.s_firstdatazone)
@@ -123,19 +148,7 @@ static unsigned short good_blocks_table[MAX_GOOD_BLOCKS];
static int used_good_blocks = 0;
static unsigned long req_nr_inodes = 0;
-#define bitop(name,op) \
-static inline int name(char * addr,unsigned int nr) \
-{ \
-int __res; \
-__asm__ __volatile__("bt" op " %1,%2; adcl $0,%0" \
-:"=g" (__res) \
-:"r" (nr),"m" (*(addr)),"0" (0)); \
-return __res; \
-}
-
-bitop(bit,"")
-bitop(setbit,"s")
-bitop(clrbit,"r")
+#include "bitops.h"
#define inode_in_use(x) (bit(inode_map,(x)))
#define zone_in_use(x) (bit(zone_map,(x)-FIRSTZONE+1))
@@ -157,7 +170,7 @@ volatile void fatal_error(const char * fmt_string,int status)
exit(status);
}
-#define usage() fatal_error("Usage: %s [-c | -l filename] [-nXX] [-iXX] /dev/name blocks\n",16)
+#define usage() fatal_error("Usage: %s [-c | -l filename] [-nXX] [-iXX] /dev/name [blocks]\n",16)
#define die(str) fatal_error("%s: " str "\n",8)
/*
@@ -182,6 +195,57 @@ static void check_mount(void)
die("%s is mounted; will not make a filesystem here!");
}
+static long valid_offset (int fd, int offset)
+{
+ char ch;
+
+ if (lseek (fd, offset, 0) < 0)
+ return 0;
+ if (read (fd, &ch, 1) < 1)
+ return 0;
+ return 1;
+}
+
+static int count_blocks (int fd)
+{
+ int high, low;
+
+ low = 0;
+ for (high = 1; valid_offset (fd, high); high *= 2)
+ low = high;
+ while (low < high - 1)
+ {
+ const int mid = (low + high) / 2;
+
+ if (valid_offset (fd, mid))
+ low = mid;
+ else
+ high = mid;
+ }
+ valid_offset (fd, 0);
+ return (low + 1);
+}
+
+static int get_size(const char *file)
+{
+ int fd;
+ int size;
+
+ fd = open(file, O_RDWR);
+ if (fd < 0) {
+ perror(file);
+ exit(1);
+ }
+ if (ioctl(fd, BLKGETSIZE, &size) >= 0) {
+ close(fd);
+ return (size * 512);
+ }
+
+ size = count_blocks(fd);
+ close(fd);
+ return size;
+}
+
void write_tables(void)
{
/* Mark the super block valid. */
@@ -300,6 +364,58 @@ end_bad:
write_block(dind, (char *) dind_block);
}
+#ifdef HAVE_MINIX2
+void
+make_bad_inode2 (void)
+{
+ struct minix2_inode *inode = &Inode2[MINIX_BAD_INO];
+ int i, j, zone;
+ int ind = 0, dind = 0;
+ unsigned long ind_block[BLOCK_SIZE >> 2];
+ unsigned long dind_block[BLOCK_SIZE >> 2];
+
+ if (!badblocks)
+ return;
+ mark_inode (MINIX_BAD_INO);
+ inode->i_nlinks = 1;
+ inode->i_atime = inode->i_mtime = inode->i_ctime = time (NULL);
+ inode->i_mode = S_IFREG + 0000;
+ inode->i_size = badblocks * BLOCK_SIZE;
+ zone = next (0);
+ for (i = 0; i < 7; i++) {
+ inode->i_zone[i] = zone;
+ if (!NEXT_BAD)
+ goto end_bad;
+ }
+ inode->i_zone[7] = ind = get_free_block ();
+ memset (ind_block, 0, BLOCK_SIZE);
+ for (i = 0; i < 256; i++) {
+ ind_block[i] = zone;
+ if (!NEXT_BAD)
+ goto end_bad;
+ }
+ inode->i_zone[8] = dind = get_free_block ();
+ memset (dind_block, 0, BLOCK_SIZE);
+ for (i = 0; i < 256; i++) {
+ write_block (ind, (char *) ind_block);
+ dind_block[i] = ind = get_free_block ();
+ memset (ind_block, 0, BLOCK_SIZE);
+ for (j = 0; j < 256; j++) {
+ ind_block[j] = zone;
+ if (!NEXT_BAD)
+ goto end_bad;
+ }
+ }
+ /* Could make triple indirect block here */
+ die ("too many bad blocks");
+ end_bad:
+ if (ind)
+ write_block (ind, (char *) ind_block);
+ if (dind)
+ write_block (dind, (char *) dind_block);
+}
+#endif
+
void make_root_inode(void)
{
struct minix_inode * inode = &Inode[MINIX_ROOT_INO];
@@ -319,9 +435,32 @@ void make_root_inode(void)
write_block(inode->i_zone[0],root_block);
}
+#ifdef HAVE_MINIX2
+void
+make_root_inode2 (void)
+{
+ struct minix2_inode *inode = &Inode2[MINIX_ROOT_INO];
+
+ mark_inode (MINIX_ROOT_INO);
+ inode->i_zone[0] = get_free_block ();
+ inode->i_nlinks = 2;
+ inode->i_atime = inode->i_mtime = inode->i_ctime = time (NULL);
+ if (badblocks)
+ inode->i_size = 3 * dirsize;
+ else {
+ root_block[2 * dirsize] = '\0';
+ root_block[2 * dirsize + 1] = '\0';
+ inode->i_size = 2 * dirsize;
+ }
+ inode->i_mode = S_IFDIR + 0755;
+ write_block (inode->i_zone[0], root_block);
+}
+#endif
+
void setup_tables(void)
{
int i;
+ unsigned long inodes;
memset(inode_map,0xff,sizeof(inode_map));
memset(zone_map,0xff,sizeof(zone_map));
@@ -329,13 +468,16 @@ void setup_tables(void)
memset(boot_block_buffer,0,512);
MAGIC = magic;
ZONESIZE = 0;
- MAXSIZE = (7+512+512*512)*1024;
+ MAXSIZE = version2 ? 0x7fffffff : (7+512+512*512)*1024;
ZONES = BLOCKS;
/* some magic nrs: 1 inode / 3 blocks */
if ( req_nr_inodes == 0 )
- INODES = BLOCKS/3;
+ inodes = BLOCKS/3;
else
- INODES = req_nr_inodes;
+ inodes = req_nr_inodes;
+ if (inodes > 65535)
+ inodes = 65535;
+ INODES = inodes;
/* I don't want some off-by-one errors, so this hack... */
if ((INODES & 8191) > 8188)
INODES -= 5;
@@ -345,6 +487,8 @@ void setup_tables(void)
ZMAPS = 0;
while (ZMAPS != UPPER(BLOCKS - NORM_FIRSTZONE,BITS_PER_BLOCK))
ZMAPS = UPPER(BLOCKS - NORM_FIRSTZONE,BITS_PER_BLOCK);
+ if (ZMAPS > 64)
+ die ("Filesystem too big for Linux to handle");
FIRSTZONE = NORM_FIRSTZONE;
for (i = FIRSTZONE ; i<ZONES ; i++)
unmark_zone(i);
@@ -354,11 +498,11 @@ void setup_tables(void)
if (!inode_buffer)
die("unable to allocate buffer for inodes");
memset(inode_buffer,0,INODE_BUFFER_SIZE);
- printf("%d inodes\n",INODES);
- printf("%d blocks\n",ZONES);
- printf("Firstdatazone=%d (%d)\n",FIRSTZONE,NORM_FIRSTZONE);
+ printf("%ld inodes\n",INODES);
+ printf("%ld blocks\n",ZONES);
+ printf("Firstdatazone=%ld (%ld)\n",FIRSTZONE,NORM_FIRSTZONE);
printf("Zonesize=%d\n",BLOCK_SIZE<<ZONESIZE);
- printf("Maxsize=%d\n\n",MAXSIZE);
+ printf("Maxsize=%ld\n\n",MAXSIZE);
}
/*
@@ -431,116 +575,146 @@ void check_blocks(void)
void get_list_blocks(filename)
char *filename;
-{
- FILE *listfile;
- unsigned long blockno;
- listfile=fopen(filename,"r");
- if(listfile == (FILE *)NULL) {
- die("can't open file of bad blocks");
- }
- while(!feof(listfile)) {
- fscanf(listfile,"%d\n", &blockno);
- mark_zone(blockno);
- badblocks++;
- }
- if(badblocks) {
- printf("%d bad block%s\n", badblocks, (badblocks>1)?"s":"");
- }
+{
+ FILE *listfile;
+ unsigned long blockno;
+
+ listfile=fopen(filename,"r");
+ if(listfile == (FILE *)NULL) {
+ die("can't open file of bad blocks");
+ }
+ while(!feof(listfile)) {
+ fscanf(listfile,"%ld\n", &blockno);
+ mark_zone(blockno);
+ badblocks++;
+ }
+ if(badblocks) {
+ printf("%d bad block%s\n", badblocks, (badblocks>1)?"s":"");
+ }
}
int main(int argc, char ** argv)
+
{
- int i;
- char * tmp;
- struct stat statbuf;
- char * listfile = NULL;
-
- if (argc && *argv)
- program_name = *argv;
- if (INODE_SIZE * MINIX_INODES_PER_BLOCK != BLOCK_SIZE)
- die("bad inode size");
- while (argc-- > 1) {
- argv++;
- if (argv[0][0] != '-')
- if (device_name) {
- BLOCKS = strtol(argv[0],&tmp,0);
- if (*tmp) {
- printf("strtol error: number of"
- " blocks not specified");
- usage();
- }
- } else
- device_name = argv[0];
- else {
- if(argv[0][1] == 'l') {
- listfile = argv[1];
- argv++;
- if (!(argc--))
- usage();
- } else {
- if(argv[0][1] == 'i') {
- req_nr_inodes
- = (unsigned long)atol(argv[1]);
- argv++;
- if (!(argc--))
- usage();
- } else while (*(++argv[0])) {
- switch (argv[0][0]) {
- case 'c': check=1; break;
- case 'n':
- i = strtoul(argv[0]+1,&tmp,0);
- if (*tmp)
- usage();
- argv[0][1] = '\0';
- if (i == 14)
- magic = MINIX_SUPER_MAGIC;
- else if (i == 30)
- magic = MINIX_SUPER_MAGIC2;
- else
- usage();
- namelen = i;
- dirsize = i+2;
- break;
- default: usage();
- }
- }
- }
- }
+ int i;
+ char * tmp;
+ struct stat statbuf;
+ char * listfile = NULL;
+
+ if (argc && *argv)
+ program_name = *argv;
+ if (INODE_SIZE * MINIX_INODES_PER_BLOCK != BLOCK_SIZE)
+ die("bad inode size");
+#ifdef HAVE_MINIX2
+ if (INODE_SIZE2 * MINIX2_INODES_PER_BLOCK != BLOCK_SIZE)
+ die("bad inode size");
+#endif
+ while (argc-- > 1) {
+ argv++;
+ if (argv[0][0] != '-')
+ if (device_name) {
+ BLOCKS = strtol(argv[0],&tmp,0);
+ if (*tmp) {
+ printf("strtol error: number of"
+ " blocks not specified");
+ usage();
}
- if (!device_name || BLOCKS<10 || BLOCKS > 65536) {
- usage();
+ } else
+ device_name = argv[0];
+ else {
+ if(argv[0][1] == 'l') {
+ listfile = argv[1];
+ argv++;
+ if (!(argc--))
+ usage();
+ } else {
+ if(argv[0][1] == 'i') {
+ req_nr_inodes
+ = (unsigned long)atol(argv[1]);
+ argv++;
+ if (!(argc--))
+ usage();
+ } else while (*(++argv[0])) {
+ switch (argv[0][0]) {
+ case 'c': check=1; break;
+ case 'n':
+ i = strtoul(argv[0]+1,&tmp,0);
+ if (*tmp)
+ usage();
+ argv[0][1] = '\0';
+ if (i == 14)
+ magic = MINIX_SUPER_MAGIC;
+ else if (i == 30)
+ magic = MINIX_SUPER_MAGIC2;
+ else
+ usage();
+ namelen = i;
+ dirsize = i+2;
+ break;
+ case 'v':
+#ifdef HAVE_MINIX2
+ version2 = 1;
+#else
+ fatal_error("%s: not compiled with minix v2 support\n",-1);
+#endif
+ break;
+ default: usage();
+ }
}
- check_mount(); /* is it already mounted? */
- tmp = root_block;
- tmp[0] = 1;
- tmp[1] = 0;
- strcpy(tmp+2,".");
- tmp += dirsize;
- tmp[0] = 1;
- tmp[1] = 0;
- strcpy(tmp+2,"..");
- tmp += dirsize;
- tmp[0] = 2;
- tmp[1] = 0;
- strcpy(tmp+2,".badblocks");
- DEV = open(device_name,O_RDWR );
- if (DEV<0)
- die("unable to open %s");
- if (fstat(DEV,&statbuf)<0)
- die("unable to stat %s");
- if (!S_ISBLK(statbuf.st_mode))
- check=0;
- else if (statbuf.st_rdev == 0x0300 || statbuf.st_rdev == 0x0340)
- die("will not try to make filesystem on '%s'");
- setup_tables();
- if (check)
- check_blocks();
- else if (listfile)
- get_list_blocks(listfile);
- make_root_inode();
- make_bad_inode();
- mark_good_blocks();
- write_tables();
- return 0;
+ }
+ }
+ }
+ if (device_name && !BLOCKS)
+ BLOCKS = get_size (device_name) / 1024;
+ if (!device_name || BLOCKS<10) {
+ usage();
+ }
+#ifdef HAVE_MINIX2
+ if (version2) {
+ if (namelen == 14)
+ magic = MINIX2_SUPER_MAGIC;
+ else
+ magic = MINIX2_SUPER_MAGIC2;
+ } else
+#endif
+ if (BLOCKS > 65535)
+ BLOCKS = 65535;
+ check_mount(); /* is it already mounted? */
+ tmp = root_block;
+ *(short *)tmp = 1;
+ strcpy(tmp+2,".");
+ tmp += dirsize;
+ *(short *)tmp = 1;
+ strcpy(tmp+2,"..");
+ tmp += dirsize;
+ *(short *)tmp = 2;
+ strcpy(tmp+2,".badblocks");
+ DEV = open(device_name,O_RDWR );
+ if (DEV<0)
+ die("unable to open %s");
+ if (fstat(DEV,&statbuf)<0)
+ die("unable to stat %s");
+ if (!S_ISBLK(statbuf.st_mode))
+ check=0;
+ else if (statbuf.st_rdev == 0x0300 || statbuf.st_rdev == 0x0340)
+ die("will not try to make filesystem on '%s'");
+ setup_tables();
+ if (check)
+ check_blocks();
+ else if (listfile)
+ get_list_blocks(listfile);
+#ifdef HAVE_MINIX2
+ if (version2) {
+ make_root_inode2 ();
+ make_bad_inode2 ();
+ } else
+#endif
+ {
+ make_root_inode();
+ make_bad_inode();
+ }
+ mark_good_blocks();
+ write_tables();
+ return 0;
}
diff --git a/disk-utils/mkswap.8 b/disk-utils/mkswap.8
index 643d7ba04..1e14167b8 100644
--- a/disk-utils/mkswap.8
+++ b/disk-utils/mkswap.8
@@ -5,7 +5,7 @@
.\" Patches from jaggy@purplet.demon.co.uk (Mike Jagdis), Wed Feb 8 1995
.\" Added comments from Nick Holloway, Sat Feb 11 1995, faith@cs.unc.edu
.\" "
-.TH MKSWAP 8 "8 February 1995" "Linux 1.0" "Linux Programmer's Manual"
+.TH MKSWAP 8 "February 1995" "Linux 1.0" "Linux Programmer's Manual"
.SH NAME
mkswap \- set up a Linux swap area
.SH SYNOPSIS
diff --git a/disk-utils/mkswap.c b/disk-utils/mkswap.c
index fe3f04c11..2a4027406 100644
--- a/disk-utils/mkswap.c
+++ b/disk-utils/mkswap.c
@@ -24,9 +24,11 @@
#include <string.h>
#include <fcntl.h>
#include <stdlib.h>
+#include <sys/ioctl.h>
#include <sys/stat.h>
+#include <asm/page.h>
-#include <linux/mm.h>
+#define BLKGETSIZE 0x1260
#ifndef __linux__
# define volatile
@@ -43,7 +45,7 @@ static int badpages = 0;
static int signature_page[PAGE_SIZE/sizeof(int)];
-static long bit_test_and_set (unsigned int *addr, unsigned int nr)
+static void bit_set (unsigned int *addr, unsigned int nr)
{
unsigned int r, m;
@@ -51,10 +53,9 @@ static long bit_test_and_set (unsigned int *addr, unsigned int nr)
r = *addr;
m = 1 << (nr & (8 * sizeof(int) - 1));
*addr = r | m;
- return (r & m) != 0;
}
-static bit_test_and_clear (unsigned int *addr, unsigned int nr)
+static int bit_test_and_clear (unsigned int *addr, unsigned int nr)
{
unsigned int r, m;
@@ -88,18 +89,18 @@ void check_blocks(void)
current_page = 0;
while (current_page < PAGES) {
if (!check) {
- bit_test_and_set(signature_page,current_page++);
+ bit_set(signature_page,current_page++);
continue;
}
if (do_seek && lseek(DEV,current_page*PAGE_SIZE,SEEK_SET) !=
current_page*PAGE_SIZE)
die("seek failed in check_blocks");
- if (do_seek = (PAGE_SIZE != read(DEV, buffer, PAGE_SIZE))) {
+ if ((do_seek = (PAGE_SIZE != read(DEV, buffer, PAGE_SIZE)))) {
bit_test_and_clear(signature_page,current_page++);
badpages++;
continue;
}
- bit_test_and_set(signature_page,current_page++);
+ bit_set(signature_page,current_page++);
}
if (badpages)
printf("%d bad page%s\n",badpages,(badpages>1)?"s":"");
@@ -183,7 +184,13 @@ int main(int argc, char ** argv)
if (device_name && !PAGES) {
PAGES = get_size(device_name) / PAGE_SIZE;
}
- if (!device_name || PAGES<10) {
+ if (!device_name) {
+ fprintf(stderr,
+ "%s: error: Nowhere to set up swap on?\n",
+ program_name);
+ usage();
+ }
+ if (PAGES < 10) {
fprintf(stderr,
"%s: error: swap area needs to be at least %ldkB\n",
program_name, 10 * PAGE_SIZE / 1024);
@@ -209,8 +216,9 @@ int main(int argc, char ** argv)
goodpages = PAGES - badpages - 1;
if (goodpages <= 0)
die("Unable to set up swap-space: unreadable");
- printf("Setting up swapspace, size = %d bytes\n",goodpages*PAGE_SIZE);
- strncpy((char*)signature_page+PAGE_SIZE-10,"SWAP-SPACE",10);
+ printf("Setting up swapspace, size = %ld bytes\n",
+ goodpages*PAGE_SIZE);
+ strncpy((char*)signature_page+PAGE_SIZE-10, "SWAP-SPACE", 10);
if (lseek(DEV, 0, SEEK_SET))
die("unable to rewind swap-device");
if (PAGE_SIZE != write(DEV, signature_page, PAGE_SIZE))
diff --git a/disk-utils/setfdprm.c b/disk-utils/setfdprm.c
index bd98f5a2f..fee55300d 100644
--- a/disk-utils/setfdprm.c
+++ b/disk-utils/setfdprm.c
@@ -2,11 +2,13 @@
autodetection and switches diagnostic messages. */
#include <unistd.h>
+#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
+#include <sys/ioctl.h>
#include <linux/fd.h>
#define FDPRMFILE "/etc/fdprm"
@@ -89,7 +91,7 @@ static void usage(char *name)
{
char *this;
- if (this = strrchr(name,'/')) name = this+1;
+ if ((this = strrchr(name,'/')) != NULL) name = this+1;
fprintf(stderr,"usage: %s [ -p ] dev name\n",name);
fprintf(stderr," %s [ -p ] dev size sect heads tracks stretch \
gap rate spec1 fmt_gap\n",name);
@@ -101,10 +103,11 @@ gap rate spec1 fmt_gap\n",name);
exit(1);
}
-
+void
main(int argc,char **argv)
{
- int cmd,fd;
+ int fd;
+ unsigned int cmd;
char *name;
name = argv[0];
@@ -143,7 +146,11 @@ main(int argc,char **argv)
if (argc != 2) usage(name);
cmd_without_param(cmd,fd);
}
- if (argc != 11 && argc != 3) usage(name);
- if (argc == 11) set_params(cmd,fd,&argv[2]);
- else find_params(cmd,fd,argv[2]);
+ if (argc != 11 && argc != 3)
+ usage(name);
+ else if (argc == 11)
+ set_params(cmd,fd,&argv[2]);
+ else
+ find_params(cmd,fd,argv[2]);
+ /* not reached */
}
diff --git a/disk-utils/sfdisk.8 b/disk-utils/sfdisk.8
new file mode 100644
index 000000000..fc9308013
--- /dev/null
+++ b/disk-utils/sfdisk.8
@@ -0,0 +1,497 @@
+.\" Copyright 1995 Andries E. Brouwer (aeb@cwi.nl)
+.\" May be distributed under the GNU General Public License
+.\" The `DOS 6.x Warning' was taken from the old fdisk.8, which says
+.\" -- Copyright 1992, 1993 Rickard E. Faith (faith@cs.unc.edu)
+.\" -- May be distributed under the GNU General Public License
+.\" The `DRDOS Warning' was taken from a net post by Stephen Tweedie.
+.\"
+.TH SFDISK 8 "1 September 1995" "Linux 1.3.23" "Linux Programmer's Manual"
+.SH NAME
+sfdisk \- Partition table manipulator for Linux
+.SH SYNOPSIS
+.BR sfdisk " [options] device"
+.br
+.BR "sfdisk \-s " [partition]
+.SH DESCRIPTION
+.B sfdisk
+has four (main) uses: list the size of a partition, list the partitions
+on a device, check the partitions on a device, and - very dangerous -
+repartition a device.
+
+.SS "List Sizes"
+.BI "sfdisk \-s " partition
+gives the size of
+.I partition
+in blocks. This may be useful in connection with programs like
+.B mkswap
+or so. Here
+.I partition
+is usually something like
+.I /dev/hda1
+or
+.IR /dev/sdb12 ,
+but may also be an entire disk, like
+.IR /dev/xda .
+.br
+.RS
+.nf
+.if t .ft CW
+% sfdisk \-s /dev/hda9
+81599
+%
+.if t .ft R
+.fi
+.RE
+If the partition argument is omitted,
+.B sfdisk
+will list the sizes of all disks, and the total:
+.br
+.RS
+.nf
+.if t .ft CW
+% sfdisk \-s
+/dev/hda: 208896
+/dev/hdb: 1025136
+/dev/hdc: 1031063
+/dev/sda: 8877895
+/dev/sdb: 1758927
+total: 12901917 blocks
+%
+.if t .ft R
+.fi
+.RE
+
+.SS "List Partitions"
+The second type of invocation:
+.BI "sfdisk \-l " "[options] device"
+will list the partitions on this device.
+If the device argument is omitted, the partitions on all hard disks
+are listed.
+.br
+.nf
+.if t .ft CW
+% sfdisk \-l /dev/hdc
+
+Disk /dev/hdc: 16 heads, 63 sectors, 2045 cylinders
+Units = cylinders of 516096 bytes, blocks of 1024 bytes, counting from 0
+
+ Device Boot Start End #cyls #blocks Id System
+/dev/hdc1 0+ 406 407\- 205096+ 83 Linux native
+/dev/hdc2 407 813 407 205128 83 Linux native
+/dev/hdc3 814 2044 1231 620424 83 Linux native
+/dev/hdc4 0 \- 0 0 0 Empty
+%
+.if t .ft R
+.fi
+The trailing \- and + signs indicate that rounding has taken place,
+and that the actual value is slightly less (more).
+To see the exact values, ask for a listing with sectors as unit.
+
+.SS "Check partitions"
+The third type of invocation:
+.BI "sfdisk \-V " device
+will apply various consistency checks to the partition tables on
+.IR device .
+It prints `OK' or complains. The \-V option can be used together
+with \-l. In a shell script one might use
+.BI "sfdisk \-V \-q " device
+which only returns a status.
+
+.SS "Create partitions"
+The fourth type of invocation:
+.BI "sfdisk " device
+will cause
+.B sfdisk
+to read the specification for the desired partitioning of
+.I device
+from its standard input, and then to change the partition tables
+on that disk. Thus, it is possible to use
+.B sfdisk
+from a shell script. When
+.B sfdisk
+determines that its standard input is a terminal, it will be
+conversational; otherwise it will abort on any error.
+.LP
+BE EXTREMELY CAREFUL - ONE TYPING MISTAKE AND ALL YOUR DATA IS LOST
+.LP
+As a precaution, one can save the sectors changed by
+.BR sfdisk :
+.RS
+.nf
+.if t .ft CW
+% sfdisk /dev/hdd \-O hdd-partition-sectors.save
+%
+.if t .ft R
+.fi
+.RE
+.LP
+Then, if you discover that you did something stupid before anything
+else has been written to disk, it may be possible to recover
+the old situation with
+.RS
+.nf
+.if t .ft CW
+% sfdisk /dev/hdd \-I hdd-partition-sectors.save
+%
+.if t .ft R
+.fi
+.RE
+
+There are many options.
+
+.SH OPTIONS
+.TP
+.BR \-v " or " \-\-version
+Print version number of
+.B sfdisk
+and exit immediately.
+.TP
+.BR \-? " or " \-\-help
+Print a usage message and exit immediately.
+.TP
+.BR \-T " or " \-\-list-types
+Print the recognized types (system Id's).
+.TP
+.BR \-s " or " \-\-show\-size
+List the size of a partition.
+.TP
+.BR \-g " or " \-\-show\-geometry
+List the kernel's idea of the geometry of the indicated disk(s).
+.TP
+.BR \-l " or " \-\-list
+List the partitions of a device.
+.TP
+.BR \-d
+Dump the partitions of a device in a format useful as input
+to sfdisk. For example,
+.br
+.nf
+.if t .ft CW
+ % sfdisk -d /dev/hda > hda.out
+ % sfdisk /dev/hda < hda.out
+.if t .ft R
+.fi
+will correct the bad last extended partition that the OS/2
+sfdisk creates.
+.TP
+.BR \-V " or " \-\-verify
+Test whether partitions seem correct. (See above.)
+.TP
+.BR \-i " or " \-\-increment
+Number cylinders etc. starting from 1 instead of 0.
+.TP
+.BI \-N " number"
+Change only the single partition indicated. For example:
+.br
+.nf
+.if t .ft CW
+ % sfdisk /dev/hdb \-N5
+ ,,,*
+ %
+.if t .ft R
+.fi
+will make the fifth partition on /dev/hdb bootable (`active')
+and change nothing else. (Probably this fifth partition
+is called /dev/hdb5, but you are free to call it something else,
+like `/my_equipment/disks/2/5' or so).
+.TP
+.BI \-A " number"
+Make the indicated partition(s) active, and all others inactive.
+.TP
+.BI \-c " or " \-\-id " number [Id]"
+If no Id argument given: print the partition Id of the indicated
+partition. If an Id argument is present: change the type (Id) of
+the indicated partition to the given value.
+This option has the two very long forms \-\-print\-id and \-\-change\-id.
+For example:
+.br
+.nf
+.if t .ft CW
+ % sfdisk --print-id /dev/hdb 5
+ 6
+ % sfdisk --change-id /dev/hdb 5 83
+ OK
+.if t .ft R
+.fi
+first reports that /dev/hdb5 has Id 6, and then changes that into 83.
+.TP
+.BR \-uS " or " \-uB " or " \-uC " or " \-uM
+Accept or report in units of sectors (blocks, cylinders, megabytes,
+respectively). The default is cylinders, at least when the geometry
+is known.
+.TP
+.BR \-x " or " \-\-show\-extended
+Also list non-primary extended partitions on output,
+and expect descriptors for them on input.
+.TP
+.BI \-C " cylinders"
+Specify the number of cylinders, possibly overriding what the kernel thinks.
+.TP
+.BI \-H " heads"
+Specify the number of heads, possibly overriding what the kernel thinks.
+.TP
+.BI \-S " sectors"
+Specify the number of sectors, possibly overriding what the kernel thinks.
+.TP
+.BR \-f " or " \-\-force
+Do what I say, even if it is stupid.
+.TP
+.BR \-q " or " \-\-quiet
+Suppress warning messages.
+.TP
+.BR \-L " or " \-\-Linux
+Do not complain about things irrelevant for Linux.
+.TP
+.BR \-D " or " \-\-DOS
+For DOS-compatibility: waste a little space.
+(More precisely: if a partition cannot contain sector 0,
+e.g. because that is the MBR of the device, or contains
+the partition table of an extended partition, then
+.B sfdisk
+would make it start the next sector. However, when this
+option is given it skips to the start of the next track,
+wasting for example 33 sectors (in case of 34 sectors/track),
+just like certain versions of DOS do.)
+Certain Disk Managers and boot loaders (such as OSBS, but not
+LILO or the OS/2 Boot Manager) also live in this empty space,
+so maybe you want this option if you use one.
+.TP
+.BR \-\-IBM " or " \-\-leave\-last
+Certain IBM diagnostic programs assume that they can use the
+last cylinder on a disk for disk-testing purposes. If you think
+you might ever run such programs, use this option to tell
+.B sfdisk
+that it should not allocate the last cylinder.
+Sometimes the last cylinder contains a bad sector table.
+.TP
+.B \-n
+Go through all the motions, but do not actually write to disk.
+.TP
+.B \-R
+Only execute the BLKRRPART ioctl (to make the kernel re-read
+the partition table). This can be useful for checking in advance
+that the final BLKRRPART will be successful, and also when you
+changed the partition table `by hand' (e.g., using dd from a backup).
+If the kernel complains (`device busy for revalidation (usage = 2)')
+then something still uses the device, and you still have to unmount
+some file system, or say swapoff to some swap partition.
+.TP
+.B \-\-no\-reread
+When starting a repartitioning of a disk, sfdisk checks that this disk
+is not mounted, or in use as a swap device, and refuses to continue
+if it is. This option suppresses the test. (On the other hand, the \-f
+option would force sfdisk to continue even when this test fails.)
+.TP
+.BI \-O " file"
+Just before writing the new partition, output the sectors
+that are going to be overwritten to
+.I file
+(where hopefully
+.I file
+resides on another disk, or on a floppy).
+.TP
+.BI \-I " file"
+After destroying your filesystems with an unfortunate
+.B sfdisk
+command, you would have been able to restore the old situation
+if only you had preserved it using the \-O flag.
+
+.SH THEORY
+Block 0 of a disk (the Master Boot Record) contains among
+other things four partition descriptors. The partitions
+described here are called
+.I primary
+partitions.
+.LP
+A partition descriptor has 6 fields:
+.br
+.nf
+.RS
+struct partition {
+ unsigned char bootable; /* 0 or 0x80 */
+ hsc begin_hsc;
+ unsigned char id;
+ hsc end_hsc;
+ unsigned int starting_sector;
+ unsigned int nr_of_sectors;
+}
+.RE
+.fi
+.LP
+The two hsc fields indicate head, sector and cylinder of the
+begin and the end of the partition. Since each hsc field only
+takes 3 bytes, only 24 bits are available, which does not
+suffice for big disks (say > 8GB). In fact, due to the wasteful
+representation (that uses a byte for the number of heads, which
+is typically 16), problems already start with 0.5GB.
+However Linux does not use these fields, and problems can arise
+only at boot time, before Linux has been started. For more
+details, see the
+.B lilo
+documentation.
+.LP
+Each partition has a type, its `Id', and if this type is 5
+.IR "" "(`" "extended partition" "')"
+the starting sector of the partition
+again contains 4 partition descriptors. MSDOS only uses the
+first two of these: the first one an actual data partition,
+and the second one again an extended partition (or empty).
+In this way one gets a chain of extended partitions.
+Other operating systems have slightly different conventions.
+Linux also accepts type 85 as equivalent to 5 - this can be
+useful if one wants to have extended partitions under Linux past
+the 1024 cylinder boundary, without DOS FDISK hanging.
+(If there is no good reason, you should just use 5, which is
+understood by other systems.)
+.LP
+Partitions that are not primary or extended are called
+.IR logical .
+Often, one cannot boot from logical partitions (because the
+process of finding them is more involved than just looking
+at the MBR).
+Note that of an extended partition only the Id and the start
+are used. There are various conventions about what to write
+in the other fields. One should not try to use extended partitions
+for data storage or swap.
+
+.SH "INPUT FORMAT"
+.B sfdisk
+reads lines of the form
+.br
+.RS
+<start> <size> <id> <bootable> <c,h,s> <c,h,s>
+.RE
+where each line fills one partition descriptor.
+.LP
+Fields are separated by whitespace, or comma or semicolon possibly
+followed by whitespace; initial and trailing whitespace is ignored.
+Numbers can be octal, decimal or hexadecimal, decimal is default.
+When a field is absent or empty, a default value is used.
+.LP
+The <c,h,s> parts can (and probably should) be omitted -
+.B sfdisk
+computes them from <start> and <size> and the disk geometry
+as given by the kernel or specified using the \-H, \-S, \-C flags.
+.LP
+Bootable is specified as [*|\-], with as default not-bootable.
+(The value of this field is irrelevant for Linux - when Linux
+runs it has been booted already - but might play a role for
+certain boot loaders and for other operating systems.
+For example, when there are several primary DOS partitions,
+DOS assigns C: to the first among these that is bootable.)
+.LP
+Id is given in hex, without the 0x prefix, or is [E|S|L|X], where
+L (LINUX_NATIVE (83)) is the default, S is LINUX_SWAP (82), E
+is EXTENDED_PARTITION (5), and X is LINUX_EXTENDED (85).
+.LP
+The default value of start is the first nonassigned sector/cylinder/...
+.LP
+The default value of size is as much as possible (until next
+partition or end-of-disk).
+.LP
+However, for the four partitions inside an extended partition,
+the defaults are: Linux partition, Extended partition, Empty, Empty.
+.LP
+But when the \-N option (change a single partition only) is given,
+the default for each field is its previous value.
+
+.SH EXAMPLE
+The command
+.RS
+.nf
+.if t .ft CW
+sfdisk /dev/hdc << EOF
+0,407
+,407
+;
+;
+EOF
+.if t .ft R
+.fi
+.RE
+will partition /dev/hdc just as indicated above.
+
+With the \-x option, the number of input lines must be a multiple of 4:
+you have to list the two empty partitions that you never want
+using two blank lines. Without the \-x option, you give one line
+for the partitions inside a extended partition, instead of four,
+and terminate with end-of-file (^D).
+(And
+.B sfdisk
+will assume that your input line represents the first of four,
+that the second one is extended, and the 3rd and 4th are empty.)
+
+.SH "DOS 6.x WARNING"
+
+The DOS 6.x FORMAT command looks for some information in the first
+sector of the data area of the partition, and treats this information
+as more reliable than the information in the partition table. DOS
+FORMAT expects DOS FDISK to clear the first 512 bytes of the data area
+of a partition whenever a size change occurs. DOS FORMAT will look at
+this extra information even if the /U flag is given -- we consider
+this a bug in DOS FORMAT and DOS FDISK.
+.LP
+The bottom line is that if you use sfdisk to change the size of a
+DOS partition table entry, then you must also use
+.B dd
+to zero the first 512 bytes of that partition before using DOS FORMAT to
+format the partition. For example, if you were using sfdisk to make a DOS
+partition table entry for /dev/hda1, then (after exiting sfdisk and
+rebooting Linux so that the partition table information is valid) you
+would use the command "dd if=/dev/zero of=/dev/hda1 bs=512 count=1" to zero
+the first 512 bytes of the partition.
+.B BE EXTREMELY CAREFUL
+if you use the
+.B dd
+command, since a small typo can make all of the data on your disk useless.
+
+For best results, you should always use an OS-specific partition table
+program. For example, you should make DOS partitions with the DOS FDISK
+program and Linux partitions with the Linux sfdisk program.
+
+.SH "DRDOS WARNINGS"
+
+Stephen Tweedie reported (930515): `Most reports of superblock
+corruption turn out to be due to bad partitioning, with one filesystem
+overrunning the start of the next and corrupting its superblock.
+I have even had this problem with the supposedly-reliable DRDOS. This
+was quite possibly due to DRDOS-6.0's FDISK command. Unless I created
+a blank track or cylinder between the DRDOS partition and the
+immediately following one, DRDOS would happily stamp all over the
+start of the next partition. Mind you, as long as I keep a little
+free disk space after any DRDOS partition, I don't have any other
+problems with the two coexisting on the one drive.'
+
+A. V. Le Blanc writes in README.esfdisk: `Dr. DOS 5.0 and 6.0 has been
+reported to have problems cooperating with Linux, and with this version
+of efdisk in particular. This efdisk sets the system type
+to hexadecimal 81. Dr. DOS seems to confuse
+this with hexadecimal 1, a DOS code. If you use Dr. DOS, use the
+efdisk command 't' to change the system code of any Linux partitions
+to some number less than hexadecimal 80; I suggest 41 and 42 for
+the moment.'
+
+A. V. Le Blanc writes in his README.fdisk: `DR-DOS 5.0 and 6.0
+are reported to have difficulties with partition ID codes of 80 or more.
+The Linux `fdisk' used to set the system type
+of new partitions to hexadecimal 81. DR-DOS seems to confuse this with
+hexadecimal 1, a DOS code. The values 82 for swap and 83 for file
+systems should not cause problems with DR-DOS. If they do, you may use
+the `fdisk' command `t' to change the system code of any Linux
+partitions to some number less than hexadecimal 80; I suggest 42 and 43
+for the moment.'
+
+In fact, it seems that only 4 bits are significant for the DRDOS FDISK,
+so that for example 11 and 21 are listed as DOS 2.0. However, DRDOS
+itself seems to use the full byte. I have not been able to reproduce
+any corruption with DRDOS or its fdisk.
+
+.SH BUGS
+A corresponding interactive
+.B cfdisk
+(with curses interface) is still lacking.
+.LP
+There are too many options.
+
+.SH AUTHOR
+A. E. Brouwer (aeb@cwi.nl)
diff --git a/disk-utils/sfdisk.c b/disk-utils/sfdisk.c
new file mode 100644
index 000000000..fcc76c41c
--- /dev/null
+++ b/disk-utils/sfdisk.c
@@ -0,0 +1,2712 @@
+/*
+ * sfdisk version 3.0 - aeb - 950813
+ *
+ * Copyright (C) 1995 Andries E. Brouwer (aeb@cwi.nl)
+ *
+ * This program is free software. You can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation: either Version 1
+ * or (at your option) any later version.
+ *
+ * A.V. Le Blanc (LeBlanc@mcc.ac.uk) wrote Linux fdisk 1992-1994,
+ * patched by various people (faith@cs.unc.edu, martin@cs.unc.edu,
+ * leisner@sdsp.mc.xerox.com, esr@snark.thyrsus.com, aeb@cwi.nl)
+ * 1993-1995, with version numbers (as far as I have seen) 0.93 - 2.0e.
+ * This program had (head,sector,cylinder) as basic unit, and was
+ * (therefore) broken in several ways for the use on larger disks -
+ * for example, my last patch (from 2.0d to 2.0e) was required
+ * to allow a partition to cross cylinder 8064, and to write an
+ * extended partition past the 4GB mark.
+ *
+ * The current program is a rewrite from scratch, and I started a
+ * version numbering at 3.0.
+ * Andries Brouwer, aeb@cwi.nl, 950813
+ *
+ * Well, a good user interface is still lacking. On the other hand,
+ * many configurations cannot be handled by any other fdisk.
+ * I changed the name to sfdisk to prevent confusion. - aeb, 970501
+ */
+
+#define PROGNAME "sfdisk"
+#define VERSION "3.06"
+#define DATE "970626"
+
+#include <stdio.h>
+#include <stdlib.h> /* atoi, free */
+#include <stdarg.h> /* varargs */
+#include <unistd.h> /* read, write */
+#include <fcntl.h> /* O_RDWR */
+#include <errno.h> /* ERANGE */
+#include <string.h> /* index() */
+#include <ctype.h>
+#include <getopt.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <linux/unistd.h> /* _syscall */
+#include <linux/hdreg.h> /* HDIO_GETGEO */
+#include <linux/fs.h> /* BLKGETSIZE */
+
+#define SIZE(a) (sizeof(a)/sizeof(a[0]))
+
+/*
+ * Table of contents:
+ * A. About seeking
+ * B. About sectors
+ * C. About heads, sectors and cylinders
+ * D. About system Ids
+ * E. About partitions
+ * F. The standard input
+ * G. The command line
+ * H. Listing the current situation
+ * I. Writing the new situation
+ */
+int exit_status = 0;
+
+int force = 0; /* 1: do what I say, even if it is stupid ... */
+int quiet = 0; /* 1: suppress all warnings */
+int Linux = 0; /* 1: suppress warnings irrelevant for Linux */
+int DOS = 0; /* 1: shift extended partitions by #sectors, not 1 */
+int dump = 0; /* 1: list in a format suitable for later input */
+int verify = 0; /* 1: check that listed partition is reasonable */
+int no_write = 0; /* 1: do not actually write to disk */
+int no_reread = 0; /* 1: skip the BLKRRPART ioctl test at startup */
+int leave_last = 0; /* 1: don't allocate the last cylinder */
+int opt_list = 0;
+char *save_sector_file = NULL;
+char *restore_sector_file = NULL;
+
+void
+warn(char *s, ...) {
+ va_list p;
+
+ va_start(p, s);
+ fflush(stdout);
+ if (!quiet)
+ vfprintf (stderr, s, p);
+ va_end(p);
+}
+
+void
+error(char *s, ...) {
+ va_list p;
+
+ va_start(p, s);
+ fflush(stdout);
+ fprintf(stderr, "\n" PROGNAME ": ");
+ vfprintf(stderr, s, p);
+ va_end(p);
+}
+
+void
+fatal(char *s, ...) {
+ va_list p;
+
+ va_start(p, s);
+ fflush(stdout);
+ fprintf(stderr, "\n" PROGNAME ": ");
+ vfprintf(stderr, s, p);
+ va_end(p);
+ exit(1);
+}
+
+/*
+ * A. About seeking
+ */
+
+/*
+ * sseek: seek to specified sector - return 0 on failure
+ *
+ * For >4GB disks lseek needs a > 32bit arg, and we have to use llseek.
+ * On the other hand, a 32 bit sector number is OK until 2TB.
+ * The routines _llseek and sseek below are the only ones that
+ * know about the loff_t type.
+ */
+#ifndef __alpha__
+static
+_syscall5(int, _llseek, uint, fd, ulong, hi, ulong, lo,
+ loff_t *, res, uint, wh);
+#endif
+
+int
+sseek(char *dev, unsigned int fd, unsigned long s) {
+ loff_t in, out;
+ in = ((loff_t) s << 9);
+ out = 1;
+
+#ifndef __alpha__
+ if (_llseek (fd, in>>32, in & 0xffffffff, &out, SEEK_SET) != 0) {
+#else
+ if ((out = lseek(fd, in, SEEK_SET)) != in) {
+#endif
+ perror("llseek");
+ error("seek error on %s - cannot seek to %lu\n", dev, s);
+ return 0;
+ }
+
+ if (in != out) {
+ error("seek error: wanted 0x%08x%08x, got 0x%08x%08x\n",
+ (uint)(in>>32), (uint)(in & 0xffffffff),
+ (uint)(out>>32), (uint)(out & 0xffffffff));
+ return 0;
+ }
+ return 1;
+}
+
+/*
+ * B. About sectors
+ */
+
+/*
+ * We preserve all sectors read in a chain - some of these will
+ * have to be modified and written back.
+ */
+struct sector {
+ struct sector *next;
+ unsigned long sectornumber;
+ int to_be_written;
+ char data[512];
+} *sectorhead;
+
+void
+free_sectors(void) {
+ struct sector *s;
+
+ while (sectorhead) {
+ s = sectorhead;
+ sectorhead = s->next;
+ free(s);
+ }
+}
+
+struct sector *
+get_sector(char *dev, int fd, unsigned long sno) {
+ struct sector *s;
+
+ for(s = sectorhead; s; s = s->next)
+ if(s->sectornumber == sno)
+ return s;
+
+ if (!sseek(dev, fd, sno))
+ return 0;
+
+ if (!(s = (struct sector *) malloc(sizeof(struct sector))))
+ fatal("out of memory - giving up\n");
+
+ if (read(fd, s->data, sizeof(s->data)) != sizeof(s->data)) {
+ perror("read");
+ error("read error on %s - cannot read sector %lu\n", dev, sno);
+ free(s);
+ return 0;
+ }
+
+ s->next = sectorhead;
+ sectorhead = s;
+ s->sectornumber = sno;
+ s->to_be_written = 0;
+
+ return s;
+}
+
+int
+msdos_signature (struct sector *s) {
+ if (*(unsigned short *) (s->data + 0x1fe) != 0xaa55) {
+ error("ERROR: sector %lu does not have an msdos signature\n",
+ s->sectornumber);
+ return 0;
+ }
+ return 1;
+}
+
+int
+write_sectors(char *dev, int fd) {
+ struct sector *s;
+
+ for (s = sectorhead; s; s = s->next)
+ if (s->to_be_written) {
+ if (!sseek(dev, fd, s->sectornumber))
+ return 0;
+ if (write(fd, s->data, sizeof(s->data)) != sizeof(s->data)) {
+ perror("write");
+ error("write error on %s - cannot write sector %lu\n",
+ dev, s->sectornumber);
+ return 0;
+ }
+ s->to_be_written = 0;
+ }
+ return 1;
+}
+
+void
+ulong_to_chars(unsigned long u, char *uu) {
+ int i;
+
+ for(i=0; i<4; i++) {
+ uu[i] = (u & 0xff);
+ u >>= 8;
+ }
+}
+
+unsigned long
+chars_to_ulong(unsigned char *uu) {
+ int i;
+ unsigned long u = 0;
+
+ for(i=3; i>=0; i--)
+ u = (u << 8) | uu[i];
+ return u;
+}
+
+int
+save_sectors(char *dev, int fdin) {
+ struct sector *s;
+ char ss[516];
+ int fdout;
+
+ fdout = open(save_sector_file, O_WRONLY | O_CREAT, 0444);
+ if (fdout < 0) {
+ perror(save_sector_file);
+ error("cannot open partition sector save file (%s)\n",
+ save_sector_file);
+ return 0;
+ }
+
+ for (s = sectorhead; s; s = s->next)
+ if (s->to_be_written) {
+ ulong_to_chars(s->sectornumber, ss);
+ if (!sseek(dev, fdin, s->sectornumber))
+ return 0;
+ if (read(fdin, ss+4, 512) != 512) {
+ perror("read");
+ error("read error on %s - cannot read sector %lu\n",
+ dev, s->sectornumber);
+ return 0;
+ }
+ if (write(fdout, ss, sizeof(ss)) != sizeof(ss)) {
+ perror("write");
+ error("write error on %s\n", save_sector_file);
+ return 0;
+ }
+ }
+ return 1;
+}
+
+void reread_disk_partition(char *dev, int fd);
+
+int
+restore_sectors(char *dev) {
+ int fdin, fdout, ct;
+ struct stat statbuf;
+ char *ss0, *ss;
+ unsigned long sno;
+
+ if (stat(restore_sector_file, &statbuf) < 0) {
+ perror(restore_sector_file);
+ error("cannot stat partition restore file (%s)\n",
+ restore_sector_file);
+ return 0;
+ }
+ if (statbuf.st_size % 516) {
+ error("partition restore file has wrong size - not restoring\n");
+ return 0;
+ }
+ if (!(ss = (char *) malloc(statbuf.st_size))) {
+ error("out of memory?\n");
+ return 0;
+ }
+ fdin = open(restore_sector_file, O_RDONLY);
+ if (fdin < 0) {
+ perror(restore_sector_file);
+ error("cannot open partition restore file (%s)\n",
+ restore_sector_file);
+ return 0;
+ }
+ if (read(fdin, ss, statbuf.st_size) != statbuf.st_size) {
+ perror("read");
+ error("error reading %s\n", restore_sector_file);
+ return 0;
+ }
+
+ fdout = open(dev, O_WRONLY);
+ if (fdout < 0) {
+ perror(dev);
+ error("cannot open device %s for writing\n", dev);
+ return 0;
+ }
+
+ ss0 = ss;
+ ct = statbuf.st_size/516;
+ while(ct--) {
+ sno = chars_to_ulong(ss);
+ if (!sseek(dev, fdout, sno))
+ return 0;
+ if (write(fdout, ss+4, 512) != 512) {
+ perror(dev);
+ error("error writing sector %lu on %s\n", sno, dev);
+ return 0;
+ }
+ ss += 516;
+ }
+ free(ss0);
+
+ reread_disk_partition(dev, fdout);
+
+ return 1;
+}
+
+/*
+ * C. About heads, sectors and cylinders
+ */
+
+/*
+ * <linux/hdreg.h> defines HDIO_GETGEO and
+ * struct hd_geometry {
+ * unsigned char heads;
+ * unsigned char sectors;
+ * unsigned short cylinders;
+ * unsigned long start;
+ * };
+ */
+
+unsigned long cylindersize;
+unsigned long heads, sectors, cylinders;
+unsigned long specified_heads, specified_sectors, specified_cylinders;
+
+void
+get_cylindersize(char *dev, int fd, int silent) {
+ struct hd_geometry g;
+ int ioctl_ok = 0;
+
+ heads = sectors = cylinders = 0;
+
+ if (!ioctl(fd, HDIO_GETGEO, &g)) {
+ ioctl_ok = 1;
+
+ heads = g.heads;
+ sectors = g.sectors;
+ cylinders = g.cylinders;
+ }
+
+ if (specified_heads)
+ heads = specified_heads;
+ if (specified_sectors)
+ sectors = specified_sectors;
+ if (specified_cylinders)
+ cylinders = specified_cylinders;
+
+ cylindersize = heads * sectors;
+
+ if (ioctl_ok) {
+ if (g.start && !force) {
+ warn(
+ "Warning: start=%d - this looks like a partition rather than\n"
+ "the entire disk. Using fdisk on it is probably meaningless.\n"
+ "[Use the --force option if you really want this]\n", g.start);
+ exit(1);
+ }
+ if (heads != g.heads)
+ warn("Warning: HDIO_GETGEO says that there are %d heads\n",
+ g.heads);
+ if (sectors != g.sectors)
+ warn("Warning: HDIO_GETGEO says that there are %d sectors\n",
+ g.sectors);
+ if (cylinders != g.cylinders)
+ warn("Warning: HDIO_GETGEO says that there are %d cylinders\n",
+ g.cylinders);
+ } else if (!silent)
+ if (!heads || !sectors || !cylinders)
+ printf("Disk %s: cannot get geometry\n", dev);
+ if (sectors > 63)
+ warn("Warning: unlikely number of sectors (%d) - usually at most 63\n"
+ "This will give problems with all software that uses C/H/S addressing.\n",
+ sectors);
+ if (!silent)
+ printf("\nDisk %s: %lu heads, %lu sectors, %lu cylinders\n",
+ dev, heads, sectors, cylinders);
+}
+
+typedef struct { unsigned char h,s,c; } chs; /* has some c bits in s */
+chs zero_chs = { 0,0,0 };
+
+typedef struct { unsigned long h,s,c; } longchs;
+longchs zero_longchs;
+
+chs
+longchs_to_chs (longchs aa) {
+ chs a;
+
+ if (aa.h < 256 && aa.s < 64 && aa.c < 1024) {
+ a.h = aa.h;
+ a.s = aa.s | ((aa.c >> 2) & 0xc0);
+ a.c = (aa.c & 0xff);
+ } else if (heads && sectors) {
+ a.h = heads - 1;
+ a.s = sectors | 0xc0;
+ a.c = 0xff;
+ } else
+ a = zero_chs;
+ return a;
+}
+
+longchs
+chs_to_longchs (chs a) {
+ longchs aa;
+
+ aa.h = a.h;
+ aa.s = (a.s & 0x3f);
+ aa.c = (a.s & 0xc0);
+ aa.c = (aa.c << 2) + a.c;
+ return aa;
+}
+
+longchs
+ulong_to_longchs (unsigned long sno) {
+ longchs aa;
+
+ if (heads && sectors && cylindersize) {
+ aa.s = 1 + sno % sectors;
+ aa.h = (sno / sectors) % heads;
+ aa.c = sno / cylindersize;
+ return aa;
+ } else {
+ return zero_longchs;
+ }
+}
+
+unsigned long
+longchs_to_ulong (longchs aa) {
+ return (aa.c*cylindersize + aa.h*sectors + aa.s - 1);
+}
+
+chs
+ulong_to_chs (unsigned long sno) {
+ return longchs_to_chs(ulong_to_longchs(sno));
+}
+
+unsigned long
+chs_to_ulong (chs a) {
+ return longchs_to_ulong(chs_to_longchs(a));
+}
+
+int
+is_equal_chs (chs a, chs b) {
+ return (a.h == b.h && a.s == b.s && a.c == b.c);
+}
+
+int
+chs_ok (chs a, char *v, char *w) {
+ longchs aa = chs_to_longchs(a);
+ int ret = 1;
+
+ if (is_equal_chs(a, zero_chs))
+ return 1;
+ if (heads && aa.h >= heads) {
+ warn("%s of partition %s has impossible value for head: "
+ "%d (should be in 0-%d)\n", w, v, aa.h, heads-1);
+ ret = 0;
+ }
+ if (sectors && (aa.s == 0 || aa.s > sectors)) {
+ warn("%s of partition %s has impossible value for sector: "
+ "%d (should be in 1-%d)\n", w, v, aa.s, sectors);
+ ret = 0;
+ }
+ if (cylinders && aa.c >= cylinders) {
+ warn("%s of partition %s has impossible value for cylinders: "
+ "%d (should be in 0-%d)\n", w, v, aa.c, cylinders-1);
+ ret = 0;
+ }
+ return ret;
+}
+
+/*
+ * D. About system Ids
+ */
+
+#define EMPTY_PARTITION 0
+#define EXTENDED_PARTITION 5
+#define DM6_PARTITION 0x54
+#define EZD_PARTITION 0x55
+#define DM6_AUX1PARTITION 0x51
+#define DM6_AUX3PARTITION 0x53
+#define LINUX_SWAP 0x82
+#define LINUX_NATIVE 0x83
+#define LINUX_EXTENDED 0x85
+
+/*
+ * List of system Id's, adapted from fdisk 2.0d and <linux/genhd.h>
+ * and SFS and several other sources.
+ */
+struct systypes {
+ unsigned char type;
+ char *name;
+} sys_types[] = {
+ {0, "Empty"},
+ {1, "DOS 12-bit FAT"}, /* Primary DOS with 12-bit FAT */
+ {2, "XENIX /"}, /* XENIX / filesystem */
+ {3, "XENIX /usr"}, /* XENIX /usr filesystem */
+ {4, "DOS 16-bit FAT <32M"}, /* Primary DOS with 16-bit FAT */
+ {5, "DOS Extended"}, /* DOS 3.3+ extended partition */
+ {6, "DOS 16-bit FAT >=32M"},
+ {7, "HPFS / NTFS"},
+ {8, "AIX boot or SplitDrive"},
+ {9, "AIX data or Coherent"},
+ {0x0a, "OS/2 Boot Manager"},
+ {0x0b, "Win95 FAT32"},
+ {0x0c, "Win95 FAT32 (LBA)"},
+ {0x0e, "Win95 FAT16 (LBA)"},
+ {0x0f, "Win95 Extended (LBA)"},
+ {0x10, "OPUS"},
+ {0x11, "Hidden DOS FAT12"},
+ {0x12, "Compaq diagnostics"},
+ {0x14, "Hidden DOS FAT16"},
+ {0x16, "Hidden DOS FAT16 (big)"},
+ {0x17, "Hidden HPFS/NTFS"},
+ {0x18, "AST Windows swapfile"},
+ {0x24, "NEC DOS"},
+ {0x3c, "PartitionMagic recovery"},
+ {0x40, "Venix 80286"},
+ {0x41, "Linux/MINIX (sharing disk with DRDOS)"},
+ {0x42, "SFS or Linux swap (sharing disk with DRDOS)"},
+ {0x43, "Linux native (sharing disk with DRDOS)"},
+ {0x50, "DM (disk manager)"},
+ {0x51, "DM6 Aux1 (or Novell)"},
+ {0x52, "CP/M or Microport SysV/AT"},
+ {0x53, "DM6 Aux3"},
+ {0x54, "DM6"},
+ {0x55, "EZ-Drive (disk manager)"},
+ {0x56, "Golden Bow (disk manager)"},
+ {0x5c, "Priam Edisk (disk manager)"},
+ {0x61, "SpeedStor"},
+ {0x63, "GNU HURD or Mach or Sys V/386 (such as ISC UNIX)"},
+ {0x64, "Novell Netware 286"},
+ {0x65, "Novell Netware 386"},
+ {0x70, "DiskSecure Multi-Boot"},
+ {0x75, "PC/IX"},
+ {0x77, "QNX4.x"},
+ {0x78, "QNX4.x 2nd part"},
+ {0x79, "QNX4.x 3rd part"},
+ {0x80, "MINIX until 1.4a"},
+ {0x81, "MINIX / old Linux"},
+ {0x82, "Linux swap"},
+ {0x83, "Linux native"},
+ {0x84, "OS/2 hidden C: drive"},
+ {0x85, "Linux extended"},
+ {0x86, "NTFS volume set"},
+ {0x87, "NTFS volume set"},
+ {0x93, "Amoeba"},
+ {0x94, "Amoeba BBT"}, /* (bad block table) */
+ {0xa0, "IBM Thinkpad hibernation"}, /* according to dan@fch.wimsey.bc.ca */
+ {0xa5, "BSD/386"}, /* 386BSD */
+ {0xa7, "NeXTSTEP 486"},
+ {0xb7, "BSDI fs"},
+ {0xb8, "BSDI swap"},
+ {0xc1, "DRDOS/sec (FAT-12)"},
+ {0xc4, "DRDOS/sec (FAT-16, < 32M)"},
+ {0xc6, "DRDOS/sec (FAT-16, >= 32M)"},
+ {0xc7, "Syrinx"},
+ {0xdb, "CP/M or Concurrent CP/M or Concurrent DOS or CTOS"},
+ {0xe1, "DOS access or SpeedStor 12-bit FAT extended partition"},
+ {0xe3, "DOS R/O or SpeedStor"},
+ {0xe4, "SpeedStor 16-bit FAT extended partition < 1024 cyl."},
+ {0xf1, "SpeedStor"},
+ {0xf2, "DOS 3.3+ secondary"},
+ {0xf4, "SpeedStor large partition"},
+ {0xfe, "SpeedStor >1024 cyl. or LANstep"},
+ {0xff, "Xenix Bad Block Table"}
+};
+
+
+const char *
+sysname(unsigned char type) {
+ struct systypes *s;
+
+ for (s = sys_types; s - sys_types < SIZE(sys_types); s++)
+ if (s->type == type)
+ return s->name;
+ return "Unknown";
+}
+
+void
+list_types(void) {
+ struct systypes *s;
+
+ printf("Id Name\n\n");
+ for (s = sys_types; s - sys_types < SIZE(sys_types); s++)
+ printf("%2x %s\n", s->type, s->name);
+}
+
+int
+is_extended(unsigned char type) {
+ return (type == EXTENDED_PARTITION || type == LINUX_EXTENDED);
+}
+
+/*
+ * E. About partitions
+ */
+
+/* MS/DOS partition */
+
+struct partition {
+ unsigned char bootable; /* 0 or 0x80 */
+ chs begin_chs;
+ unsigned char sys_type;
+ chs end_chs;
+ unsigned int start_sect; /* starting sector counting from 0 */
+ unsigned int nr_sects; /* nr of sectors in partition */
+};
+
+/* Unfortunately, partitions are not aligned, and non-Intel machines
+ are unhappy with non-aligned integers. So, we need a copy by hand. */
+int
+copy_to_int(unsigned char *cp) {
+ unsigned int m;
+
+ m = *cp++;
+ m += (*cp++ << 8);
+ m += (*cp++ << 16);
+ m += (*cp++ << 24);
+ return m;
+}
+
+void
+copy_from_int(int m, char *cp) {
+ *cp++ = (m & 0xff); m >>= 8;
+ *cp++ = (m & 0xff); m >>= 8;
+ *cp++ = (m & 0xff); m >>= 8;
+ *cp++ = (m & 0xff);
+}
+
+void
+copy_to_part(char *cp, struct partition *p) {
+ p->bootable = *cp++;
+ p->begin_chs.h = *cp++;
+ p->begin_chs.s = *cp++;
+ p->begin_chs.c = *cp++;
+ p->sys_type = *cp++;
+ p->end_chs.h = *cp++;
+ p->end_chs.s = *cp++;
+ p->end_chs.c = *cp++;
+ p->start_sect = copy_to_int(cp);
+ p->nr_sects = copy_to_int(cp+4);
+}
+
+void
+copy_from_part(struct partition *p, char *cp) {
+ *cp++ = p->bootable;
+ *cp++ = p->begin_chs.h;
+ *cp++ = p->begin_chs.s;
+ *cp++ = p->begin_chs.c;
+ *cp++ = p->sys_type;
+ *cp++ = p->end_chs.h;
+ *cp++ = p->end_chs.s;
+ *cp++ = p->end_chs.c;
+ copy_from_int(p->start_sect, cp);
+ copy_from_int(p->nr_sects, cp+4);
+}
+
+/* Roughly speaking, Linux doesn't use any of the above fields except
+ for partition type, start sector and number of sectors. (However,
+ see also linux/drivers/scsi/fdomain.c.)
+ The only way partition type is used (in the kernel) is the comparison
+ for equality with EXTENDED_PARTITION (and these Disk Manager types). */
+
+struct part_desc {
+ unsigned long start;
+ unsigned long size;
+ unsigned long sector, offset; /* disk location of this info */
+ struct partition p;
+ struct part_desc *ep; /* extended partition containing this one */
+} zero_part_desc;
+
+struct part_desc *
+outer_extended_partition(struct part_desc *p) {
+ while (p->ep)
+ p = p->ep;
+ return p;
+}
+
+int
+is_parent(struct part_desc *pp, struct part_desc *p) {
+ while (p) {
+ if (pp == p)
+ return 1;
+ p = p->ep;
+ }
+ return 0;
+}
+
+struct disk_desc {
+ struct part_desc partitions[128];
+ int partno;
+} oldp, newp;
+
+/* determine where on the disk this information goes */
+void
+add_sector_and_offset(struct disk_desc *z) {
+ int pno;
+ struct part_desc *p;
+
+ for (pno = 0; pno < z->partno; pno++) {
+ p = &(z->partitions[pno]);
+ p->offset = 0x1be + (pno%4)*sizeof(struct partition);
+ p->sector = (p->ep ? p->ep->start : 0);
+ }
+}
+
+/* tell the kernel to reread the partition tables */
+int reread_ioctl(int fd) {
+ if(ioctl(fd, BLKRRPART)) {
+ perror("BLKRRPART");
+ return -1;
+ }
+ return 0;
+}
+
+/* reread after writing */
+void
+reread_disk_partition(char *dev, int fd) {
+ printf("Re-reading the partition table ...\n");
+ fflush(stdout);
+ sync();
+ sleep(3); /* superfluous since 1.3.20 */
+
+ if(reread_ioctl(fd))
+ printf("The command to re-read the partition table failed\n"
+ "Reboot your system now, before using mkfs\n");
+
+ if (close(fd)) {
+ perror(dev);
+ printf("Error closing %s\n", dev);
+ }
+ printf("\n");
+}
+
+/* find Linux name of this partition, assuming that it will have a name */
+int
+index_to_linux(int pno, struct disk_desc *z) {
+ int i, ct = 1;
+ struct part_desc *p = &(z->partitions[0]);
+ for (i=0; i<pno; i++,p++)
+ if(i < 4 || (p->size > 0 && !is_extended(p->p.sys_type)))
+ ct++;
+ return ct;
+}
+
+int
+linux_to_index(int lpno, struct disk_desc *z) {
+ int i, ct = 0;
+ struct part_desc *p = &(z->partitions[0]);
+ for (i=0; i<z->partno && ct < lpno; i++,p++)
+ if((i < 4 || (p->size > 0 && !is_extended(p->p.sys_type)))
+ && ++ct == lpno)
+ return i;
+ return -1;
+}
+
+int
+asc_to_index(char *pnam, struct disk_desc *z) {
+ int pnum, pno;
+
+ if (*pnam == '#') {
+ pno = atoi(pnam+1);
+ } else {
+ pnum = atoi(pnam);
+ pno = linux_to_index(pnum, z);
+ }
+ if (!(pno >= 0 && pno < z->partno))
+ fatal("%s: no such partition\n", pnam);
+ return pno;
+}
+
+/*
+ * List partitions - in terms of sectors, blocks or cylinders
+ */
+#define F_SECTOR 1
+#define F_BLOCK 2
+#define F_CYLINDER 3
+#define F_MEGABYTE 4
+
+int default_format = F_MEGABYTE;
+int specified_format = 0;
+int show_extended = 0;
+int one_only = 0;
+int one_only_pno;
+int increment = 0;
+
+void
+set_format(char c) {
+ switch(c) {
+ default:
+ printf("unrecognized format - using sectors\n");
+ case 'S': specified_format = F_SECTOR; break;
+ case 'B': specified_format = F_BLOCK; break;
+ case 'C': specified_format = F_CYLINDER; break;
+ case 'M': specified_format = F_MEGABYTE; break;
+ }
+}
+
+unsigned long
+unitsize(int format) {
+ default_format = (cylindersize ? F_CYLINDER : F_MEGABYTE);
+ if (!format && !(format = specified_format))
+ format = default_format;
+
+ switch(format) {
+ default:
+ case F_CYLINDER:
+ if(cylindersize) return cylindersize;
+ case F_SECTOR:
+ return 1;
+ case F_BLOCK:
+ return 2;
+ case F_MEGABYTE:
+ return 2048;
+ }
+}
+
+unsigned long
+get_disksize(int format) {
+ unsigned long cs = cylinders;
+ if (cs && leave_last)
+ cs--;
+ return (cs * cylindersize) / unitsize(format);
+}
+
+void
+out_partition_header(char *dev, int format) {
+ if (dump) {
+ printf("# partition table of %s\n", dev);
+ printf("unit: sectors\n\n");
+ return;
+ }
+
+ default_format = (cylindersize ? F_CYLINDER : F_MEGABYTE);
+ if (!format && !(format = specified_format))
+ format = default_format;
+
+ switch(format) {
+ default:
+ printf("unimplemented format - using %s\n",
+ cylindersize ? "cylinders" : "sectors");
+ case F_CYLINDER:
+ if (cylindersize) {
+ printf("Units = cylinders of %lu bytes, blocks of 1024 bytes"
+ ", counting from %d\n\n",
+ cylindersize<<9, increment);
+ printf(" Device Boot Start End #cyls #blocks Id System\n");
+ break;
+ }
+ /* fall through */
+ case F_SECTOR:
+ printf("Units = sectors of 512 bytes, counting from %d\n\n",
+ increment);
+ printf(" Device Boot Start End #sectors Id System\n");
+ break;
+ case F_BLOCK:
+ printf("Units = blocks of 1024 bytes, counting from %d\n\n",
+ increment);
+ printf(" Device Boot Start End #blocks Id System\n");
+ break;
+ case F_MEGABYTE:
+ printf("Units = megabytes of 1048576 bytes, blocks of 1024 bytes"
+ ", counting from %d\n\n", increment);
+ printf(" Device Boot Start End MB #blocks Id System\n");
+ break;
+ }
+}
+
+static void
+out_rounddown(int width, unsigned long n, unsigned long unit, int inc) {
+ printf("%*lu", width, inc + n/unit);
+ if (unit != 1)
+ putchar((n % unit) ? '+' : ' ');
+ putchar(' ');
+}
+
+static void
+out_roundup(int width, unsigned long n, unsigned long unit, int inc) {
+ if (n == (unsigned long)(-1))
+ printf("%*s", width, "-");
+ else
+ printf("%*lu", width, inc + n/unit);
+ if (unit != 1)
+ putchar(((n+1) % unit) ? '-' : ' ');
+ putchar(' ');
+}
+
+static void
+out_roundup_size(int width, unsigned long n, unsigned long unit) {
+ printf("%*lu", width, (n+unit-1)/unit);
+ if (unit != 1)
+ putchar((n % unit) ? '-' : ' ');
+ putchar(' ');
+}
+
+void
+out_partition(char *dev, int format, struct part_desc *p, struct disk_desc *z) {
+ unsigned long start, end, size;
+ int pno, lpno;
+
+ if (!format && !(format = specified_format))
+ format = default_format;
+
+ pno = p - &(z->partitions[0]); /* our index */
+ lpno = index_to_linux(pno, z); /* name of next one that has a name */
+ if(pno == linux_to_index(lpno, z)) /* was that us? */
+ printf("%8s%-2u", dev, lpno); /* yes */
+ else if(show_extended)
+ printf(" - ");
+ else
+ return;
+ putchar(dump ? ':' : ' ');
+
+ start = p->start;
+ end = p->start + p->size - 1;
+ size = p->size;
+
+ if (dump) {
+ printf(" start=%9lu", start);
+ printf(", size=%8lu", size);
+ printf(", Id=%2x", p->p.sys_type);
+ if (p->p.bootable == 0x80)
+ printf(", bootable");
+ printf("\n");
+ return;
+ }
+
+ if(p->p.bootable == 0x80)
+ printf(" * ");
+ else if(p->p.bootable == 0)
+ printf(" ");
+ else
+ printf(" ? "); /* garbage */
+
+ switch(format) {
+ case F_CYLINDER:
+ if (cylindersize) {
+ out_rounddown(6, start, cylindersize, increment);
+ out_roundup(6, end, cylindersize, increment);
+ out_roundup_size(6, size, cylindersize);
+ out_rounddown(8, size, 2, 0);
+ break;
+ }
+ /* fall through */
+ default:
+ case F_SECTOR:
+ out_rounddown(9, start, 1, increment);
+ out_roundup(9, end, 1, increment);
+ out_rounddown(9, size, 1, 0);
+ break;
+ case F_BLOCK:
+#if 0
+ printf("%8lu,%3lu ",
+ p->sector/2, ((p->sector & 1) ? 512 : 0) + p->offset);
+#endif
+ out_rounddown(8, start, 2, increment);
+ out_roundup(8, end, 2, increment);
+ out_rounddown(8, size, 2, 0);
+ break;
+ case F_MEGABYTE:
+ out_rounddown(5, start, 2048, increment);
+ out_roundup(5, end, 2048, increment);
+ out_roundup_size(5, size, 2048);
+ out_rounddown(8, size, 2, 0);
+ break;
+ }
+ printf(" %2x %s\n",
+ p->p.sys_type, sysname(p->p.sys_type));
+
+ /* Is chs as we expect? */
+ if (!quiet) {
+ chs a, b;
+ longchs aa, bb;
+ a = (size ? ulong_to_chs(start) : zero_chs);
+ b = p->p.begin_chs;
+ aa = chs_to_longchs(a);
+ bb = chs_to_longchs(b);
+ if(a.s && !is_equal_chs(a, b))
+ printf("\t\tstart: (c,h,s) expected (%ld,%ld,%ld) found (%ld,%ld,%ld)\n",
+ aa.c, aa.h, aa.s, bb.c, bb.h, bb.s);
+ a = (size ? ulong_to_chs(end) : zero_chs);
+ b = p->p.end_chs;
+ aa = chs_to_longchs(a);
+ bb = chs_to_longchs(b);
+ if(a.s && !is_equal_chs(a, b))
+ printf("\t\tend: (c,h,s) expected (%ld,%ld,%ld) found (%ld,%ld,%ld)\n",
+ aa.c, aa.h, aa.s, bb.c, bb.h, bb.s);
+ if(cylinders && cylinders < 1024 && bb.c > cylinders)
+ printf("partition ends on cylinder %ld, beyond the end of the disk\n",
+ bb.c);
+ }
+}
+
+void
+out_partitions(char *dev, struct disk_desc *z) {
+ int pno, format = 0;
+
+ if (z->partno == 0)
+ printf("No partitions found\n");
+ else {
+ out_partition_header(dev, format);
+ for(pno=0; pno < z->partno; pno++) {
+ out_partition(dev, format, &(z->partitions[pno]), z);
+ if(show_extended && pno%4==3)
+ printf("\n");
+ }
+ }
+}
+
+static int
+disj(struct part_desc *p, struct part_desc *q) {
+ return
+ ((p->start + p->size <= q->start)
+ || (is_extended(p->p.sys_type)
+ && q->start + q->size <= p->start + p->size));
+}
+
+char *
+pnumber(struct part_desc *p, struct disk_desc *z) {
+ static char buf[20];
+ int this, next;
+ struct part_desc *p0 = &(z->partitions[0]);
+
+ this = index_to_linux(p-p0, z);
+ next = index_to_linux(p-p0+1, z);
+
+ if (next > this)
+ sprintf(buf, "%d", this);
+ else
+ sprintf(buf, "[%d]", this);
+ return buf;
+}
+
+int
+partitions_ok(struct disk_desc *z) {
+ struct part_desc *partitions = &(z->partitions[0]), *p, *q;
+ int partno = z->partno;
+
+#define PNO(p) pnumber(p, z)
+
+ /* Have at least 4 partitions been defined? */
+ if (partno < 4) {
+ if (!partno)
+ fatal("no partition table present.\n");
+ else
+ fatal("strange, only %d partitions defined.\n", partno);
+ return 0;
+ }
+
+ /* Are the partitions of size 0 marked empty?
+ And do they have start = 0? And bootable = 0? */
+ for (p = partitions; p - partitions < partno; p++)
+ if (p->size == 0) {
+ if(p->p.sys_type != EMPTY_PARTITION)
+ warn("Warning: partition %s has size 0 but is not marked Empty\n",
+ PNO(p));
+ else if(p->p.bootable != 0)
+ warn("Warning: partition %s has size 0 and is bootable\n",
+ PNO(p));
+ else if(p->p.start_sect != 0)
+ warn("Warning: partition %s has size 0 and nonzero start\n",
+ PNO(p));
+ /* all this is probably harmless, no error return */
+ }
+
+ /* Are the logical partitions contained in their extended partitions? */
+ for (p = partitions+4; p < partitions+partno; p++)
+ if (p->size && !is_extended(p->p.sys_type)) {
+ q = p->ep;
+ if (p->start < q->start || p->start + p->size > q->start + q->size) {
+ warn("Warning: partition %s ", PNO(p));
+ warn("is not contained in partition %s\n", PNO(q));
+ return 0;
+ }
+ }
+
+ /* Are the data partitions mutually disjoint? */
+ for (p = partitions; p < partitions+partno; p++)
+ if (p->size && !is_extended(p->p.sys_type))
+ for (q = p+1; q < partitions+partno; q++)
+ if (q->size && !is_extended(q->p.sys_type))
+ if(!((p->start > q-> start) ? disj(q,p) : disj(p,q))) {
+ warn("Warning: partitions %s ", PNO(p));
+ warn("and %s overlap\n", PNO(q));
+ return 0;
+ }
+
+ /* Do they start past zero and end before end-of-disk? */
+ { unsigned long ds = get_disksize(F_SECTOR);
+ for (p = partitions; p < partitions+partno; p++)
+ if (p->size) {
+ if(p->start == 0) {
+ warn("Warning: partition %s starts at sector 0\n", PNO(p));
+ return 0;
+ }
+ if (p->size && p->start + p->size > ds) {
+ warn("Warning: partition %s extends past end of disk\n", PNO(p));
+ return 0;
+ }
+ }
+ }
+
+ /* At most one chain of DOS extended partitions ? */
+ /* It seems that the OS/2 fdisk has the additional requirement
+ that the extended partition must be the fourth one */
+ { int ect = 0;
+ for (p = partitions; p < partitions+4; p++)
+ if (p->p.sys_type == EXTENDED_PARTITION)
+ ect++;
+ if (ect > 1 && !Linux) {
+ warn("Among the primary partitions, at most one can be extended\n");
+ warn(" (although this is not a problem under Linux)\n");
+ return 0;
+ }
+ }
+
+ /*
+ * Do all partitions start at a cylinder boundary ?
+ * (this is not required for Linux)
+ * The first partition starts after MBR.
+ * Logical partitions start slightly after the containing extended partn.
+ */
+ if (cylindersize) {
+ for(p = partitions; p < partitions+partno; p++)
+ if (p->size) {
+ if(p->start % cylindersize != 0
+ && (!p->ep || p->start / cylindersize != p->ep->start / cylindersize)
+ && (p->p.start_sect >= cylindersize)) {
+ warn("Warning: partition %s does not start "
+ "at a cylinder boundary\n", PNO(p));
+ if (!Linux)
+ return 0;
+ }
+ if((p->start + p->size) % cylindersize) {
+ warn("Warning: partition %s does not end "
+ "at a cylinder boundary\n", PNO(p));
+ if (!Linux)
+ return 0;
+ }
+ }
+ }
+
+ /* Usually, one can boot only from primary partitions. */
+ /* In fact, from a unique one only. */
+ /* do not warn about bootable extended partitions -
+ often LILO is there */
+ { int pno = -1;
+ for(p = partitions; p < partitions+partno; p++)
+ if (p->p.bootable) {
+ if (pno == -1)
+ pno = p - partitions;
+ else if (p - partitions < 4) {
+ warn("Warning: more than one primary partition is marked "
+ "bootable (active)\n"
+ "This does not matter for LILO, but the DOS MBR will "
+ "not boot this disk.\n");
+ break;
+ }
+ if (p - partitions >= 4) {
+ warn("Warning: usually one can boot from primary partitions "
+ "only\n" "LILO disregards the `bootable' flag.\n");
+ break;
+ }
+ }
+ if (pno == -1 || pno >= 4)
+ warn("Warning: no primary partition is marked bootable (active)\n"
+ "This does not matter for LILO, but the DOS MBR will "
+ "not boot this disk.\n");
+ }
+
+ /* Is chs as we expect? */
+ for(p = partitions; p < partitions+partno; p++) {
+ chs a, b;
+ longchs aa, bb;
+ a = p->size ? ulong_to_chs(p->start) : zero_chs;
+ b = p->p.begin_chs;
+ aa = chs_to_longchs(a);
+ bb = chs_to_longchs(b);
+ if (!chs_ok(b, PNO(p), "start"))
+ return 0;
+ if(a.s && !is_equal_chs(a, b))
+ warn("partition %s: start: (c,h,s) expected (%ld,%ld,%ld) found (%ld,%ld,%ld)\n",
+ PNO(p), aa.c, aa.h, aa.s, bb.c, bb.h, bb.s);
+ a = p->size ? ulong_to_chs(p->start + p->size - 1) : zero_chs;
+ b = p->p.end_chs;
+ aa = chs_to_longchs(a);
+ bb = chs_to_longchs(b);
+ if (!chs_ok(b, PNO(p), "end"))
+ return 0;
+ if(a.s && !is_equal_chs(a, b))
+ warn("partition %s: end: (c,h,s) expected (%ld,%ld,%ld) found (%ld,%ld,%ld)\n",
+ PNO(p), aa.c, aa.h, aa.s, bb.c, bb.h, bb.s);
+ if(cylinders && cylinders < 1024 && bb.c > cylinders)
+ warn("partition %s ends on cylinder %ld, beyond the end of the disk\n",
+ PNO(p), bb.c);
+ }
+
+ return 1;
+
+#undef PNO
+}
+
+static void
+extended_partition(char *dev, int fd, struct part_desc *ep, struct disk_desc *z) {
+ char *cp;
+ struct sector *s;
+ unsigned long start, here, next;
+ int i, moretodo = 1;
+ struct partition p;
+ struct part_desc *partitions = &(z->partitions[0]);
+ int pno = z->partno;
+
+ here = start = ep->start;
+
+ while (moretodo) {
+ moretodo = 0;
+
+ if (!(s = get_sector(dev, fd, here)))
+ break;
+
+ if (!msdos_signature(s))
+ break;
+
+ cp = s->data + 0x1be;
+
+ if (pno+4 >= SIZE(z->partitions)) {
+ printf("too many partitions - ignoring those past nr (%d)\n",
+ pno-1);
+ break;
+ }
+
+ next = 0;
+
+ for (i=0; i<4; i++,cp += sizeof(struct partition)) {
+ partitions[pno].sector = here;
+ partitions[pno].offset = cp - s->data;
+ partitions[pno].ep = ep;
+ copy_to_part(cp,&p);
+ if (is_extended(p.sys_type)) {
+ if (next)
+ printf("tree of partitions?\n");
+ partitions[pno].start = next = start + p.start_sect;
+ moretodo = 1;
+ } else {
+ partitions[pno].start = here + p.start_sect;
+ }
+ partitions[pno].size = p.nr_sects;
+ partitions[pno++].p = p;
+ }
+ here = next;
+ }
+
+ z->partno = pno;
+}
+
+static int
+msdos_partition(char *dev, int fd, unsigned long start, struct disk_desc *z) {
+ int i;
+ char *cp;
+ struct partition pt;
+ struct sector *s;
+ struct part_desc *partitions = &(z->partitions[0]);
+ int pno = z->partno;
+
+ if (!(s = get_sector(dev, fd, start)))
+ return 0;
+
+ if (!msdos_signature(s))
+ return 0;
+
+ cp = s->data + 0x1be;
+ copy_to_part(cp,&pt);
+
+ /* If I am not mistaken, recent kernels will hide this from us,
+ so we will never actually see traces of a Disk Manager */
+ if (pt.sys_type == DM6_PARTITION
+ || pt.sys_type == EZD_PARTITION
+ || pt.sys_type == DM6_AUX1PARTITION
+ || pt.sys_type == DM6_AUX3PARTITION) {
+ printf("detected Disk Manager - unable to handle that\n");
+ return 0;
+ }
+ { unsigned int sig = *(unsigned short *)(s->data + 2);
+ if (sig <= 0x1ae
+ && *(unsigned short *)(s->data + sig) == 0x55aa
+ && (1 & *(unsigned char *)(s->data + sig + 2))) {
+ printf("DM6 signature found - giving up\n");
+ return 0;
+ }
+ }
+
+ for (pno=0; pno<4; pno++,cp += sizeof(struct partition)) {
+ partitions[pno].sector = start;
+ partitions[pno].offset = cp - s->data;
+ copy_to_part(cp,&pt);
+ partitions[pno].start = start + pt.start_sect;
+ partitions[pno].size = pt.nr_sects;
+ partitions[pno].ep = 0;
+ partitions[pno].p = pt;
+ }
+
+ z->partno = pno;
+
+ for (i=0; i<4; i++)
+ if (is_extended(partitions[i].p.sys_type)) {
+ if (!partitions[i].size) {
+ printf("strange..., an extended partition of size 0?\n");
+ continue;
+ }
+ extended_partition(dev, fd, &partitions[i], z);
+ }
+
+ return 1;
+}
+
+static int
+osf_partition(char *dev, int fd, unsigned long start, struct disk_desc *z) {
+ return 0;
+}
+
+void
+get_partitions(char *dev, int fd, struct disk_desc *z) {
+ z->partno = 0;
+
+ if (!msdos_partition(dev, fd, 0, z) && !osf_partition(dev, fd, 0, z)) {
+ printf(" %s: unrecognized partition\n", dev);
+ return;
+ }
+}
+
+int
+write_partitions(char *dev, int fd, struct disk_desc *z) {
+ struct sector *s;
+ struct part_desc *partitions = &(z->partitions[0]), *p;
+ int pno = z->partno;
+
+ if (no_write) {
+ printf("-n flag was given: Nothing changed\n");
+ exit(0);
+ }
+
+ for (p = partitions; p < partitions+pno; p++) {
+ s = get_sector(dev, fd, p->sector);
+ if (!s) return 0;
+ s->to_be_written = 1;
+ copy_from_part(&(p->p), s->data + p->offset);
+ *(unsigned short *)(&(s->data[0x1fe])) = 0xaa55;
+ }
+ if (save_sector_file) {
+ if (!save_sectors(dev, fd)) {
+ fatal("Failed saving the old sectors - aborting\n");
+ return 0;
+ }
+ }
+ if (!write_sectors(dev, fd)) {
+ error("Failed writing the partition on %s\n", dev);
+ return 0;
+ }
+ return 1;
+}
+
+/*
+ * F. The standard input
+ */
+
+/*
+ * Input format:
+ * <start> <size> <type> <bootable> <c,h,s> <c,h,s>
+ * Fields are separated by whitespace or comma or semicolon possibly
+ * followed by whitespace; initial and trailing whitespace is ignored.
+ * Numbers can be octal, decimal or hexadecimal, decimal is default
+ * The <c,h,s> parts can (and probably should) be omitted.
+ * Bootable is specified as [*|-], with as default not-bootable.
+ * Type is given in hex, without the 0x prefix, or is [E|S|L|X], where
+ * L (LINUX_NATIVE (83)) is the default, S is LINUX_SWAP (82), and E
+ * is EXTENDED_PARTITION (5), X is LINUX_EXTENDED (85).
+ * The default value of start is the first nonassigned sector/cylinder/...
+ * The default value of size is as much as possible (until next
+ * partition or end-of-disk).
+ * .: end of chain of extended partitions.
+ *
+ * On interactive input an empty line means: all defaults.
+ * Otherwise empty lines are ignored.
+ */
+
+int eof, eob;
+
+struct dumpfld {
+ int fldno;
+ char *fldname;
+ int is_bool;
+} dumpflds[] = {
+ { 0, "start", 0 },
+ { 1, "size", 0 },
+ { 2, "Id", 0 },
+ { 3, "bootable", 1 },
+ { 4, "bh", 0 },
+ { 5, "bs", 0 },
+ { 6, "bc", 0 },
+ { 7, "eh", 0 },
+ { 8, "es", 0 },
+ { 9, "ec", 0 }
+};
+
+/*
+ * Read a line, split it into fields
+ *
+ * (some primitive handwork, but a more elaborate parser seems
+ * unnecessary)
+ */
+#define RD_EOF (-1)
+#define RD_CMD (-2)
+
+int
+read_stdin(unsigned char **fields, unsigned char *line, int fieldssize, int linesize) {
+ unsigned char *lp, *ip;
+ int c, fno;
+
+ /* boolean true and empty string at start */
+ line[0] = '*';
+ line[1] = 0;
+ for (fno=0; fno < fieldssize; fno++)
+ fields[fno] = line + 1;
+ fno = 0;
+
+ /* read a line from stdin */
+ lp = fgets(line+2, linesize, stdin);
+ if (lp == NULL) {
+ eof = 1;
+ return RD_EOF;
+ }
+ if (!(lp = index(lp, '\n')))
+ fatal("long or incomplete input line - quitting\n");
+ *lp = 0;
+
+ /* remove comments, if any */
+ if ((lp = index(line+2, '#')) != 0)
+ *lp = 0;
+
+ /* recognize a few commands - to be expanded */
+ if (!strcmp(line+2, "unit: sectors")) {
+ specified_format = F_SECTOR;
+ return RD_CMD;
+ }
+
+ /* dump style? - then bad input is fatal */
+ if ((ip = index(line+2, ':')) != 0) {
+ struct dumpfld *d;
+
+ nxtfld:
+ ip++;
+ while(isspace(*ip))
+ ip++;
+ if (*ip == 0)
+ return fno;
+ for(d = dumpflds; d-dumpflds < SIZE(dumpflds); d++) {
+ if(!strncmp(ip, d->fldname, strlen(d->fldname))) {
+ ip += strlen(d->fldname);
+ while(isspace(*ip))
+ ip++;
+ if (d->is_bool)
+ fields[d->fldno] = line;
+ else if (*ip == '=') {
+ while(isspace(*++ip)) ;
+ fields[d->fldno] = ip;
+ while(isalnum(*ip)) /* 0x07FF */
+ ip++;
+ } else
+ fatal("input error: `=' expected after %s field\n",
+ d->fldname);
+ if (fno <= d->fldno)
+ fno = d->fldno + 1;
+ if(*ip == 0)
+ return fno;
+ if(*ip != ',' && *ip != ';')
+ fatal("input error: unexpected character %c after %s field\n",
+ *ip, d->fldname);
+ *ip = 0;
+ goto nxtfld;
+ }
+ }
+ fatal("unrecognized input: %s\n", ip);
+ }
+
+ /* split line into fields */
+ lp = ip = line+2;
+ fields[fno++] = lp;
+ while((c = *ip++) != 0) {
+ if (!lp[-1] && (c == '\t' || c == ' '))
+ ;
+ else if (c == '\t' || c == ' ' || c == ',' || c == ';') {
+ *lp++ = 0;
+ if (fno < fieldssize)
+ fields[fno++] = lp;
+ continue;
+ } else
+ *lp++ = c;
+ }
+
+ if (lp == fields[fno-1])
+ fno--;
+ return fno;
+}
+
+/* read a number, use default if absent */
+int
+get_ul(char *u, unsigned long *up, unsigned long def, int base) {
+ char *nu;
+
+ if (*u) {
+ errno = 0;
+ *up = strtoul(u, &nu, base);
+ if (errno == ERANGE) {
+ printf("number too big\n");
+ return -1;
+ }
+ if (*nu) {
+ printf("trailing junk after number\n");
+ return -1;
+ }
+ } else
+ *up = def;
+ return 0;
+}
+
+/* There are two common ways to structure extended partitions:
+ as nested boxes, and as a chain. Sometimes the partitions
+ must be given in order. Sometimes all logical partitions
+ must lie inside the outermost extended partition.
+NESTED: every partition is contained in the surrounding partitions
+ and is disjoint from all others.
+CHAINED: every data partition is contained in the surrounding partitions
+ and disjoint from all others, but extended partitions may lie outside
+ (insofar as allowed by all_logicals_inside_outermost_extended).
+ONESECTOR: all data partitions are mutually disjoint; extended partitions
+ each use one sector only (except perhaps for the outermost one).
+*/
+int partitions_in_order = 0;
+int all_logicals_inside_outermost_extended = 1;
+enum { NESTED, CHAINED, ONESECTOR } boxes = NESTED;
+
+/* find the default value for <start> - assuming entire units */
+unsigned long
+first_free(int pno, int is_extended, struct part_desc *ep, int format,
+ unsigned long mid, struct disk_desc *z) {
+ unsigned long ff, fff;
+ unsigned long unit = unitsize(format);
+ struct part_desc *partitions = &(z->partitions[0]), *pp = 0;
+
+ /* if containing ep undefined, look at its container */
+ if (ep && ep->p.sys_type == EMPTY_PARTITION)
+ ep = ep->ep;
+
+ if (ep) {
+ if (boxes == NESTED || (boxes == CHAINED && !is_extended))
+ pp = ep;
+ else if (all_logicals_inside_outermost_extended)
+ pp = outer_extended_partition(ep);
+ }
+#if 0
+ ff = pp ? (pp->start + unit - 1) / unit : 0;
+#else
+ /* rounding up wastes almost an entire cylinder - round down
+ and leave it to compute_start_sect() to fix the difference */
+ ff = pp ? pp->start / unit : 0;
+#endif
+ /* MBR and 1st sector of an extended partition are never free */
+ if (unit == 1)
+ ff++;
+
+ again:
+ for(pp = partitions; pp < partitions+pno; pp++) {
+ if (!is_parent(pp, ep) && pp->size > 0) {
+ if ((partitions_in_order || pp->start / unit <= ff
+ || (mid && pp->start / unit <= mid))
+ && (fff = (pp->start + pp->size + unit - 1) / unit) > ff) {
+ ff = fff;
+ goto again;
+ }
+ }
+ }
+
+ return ff;
+}
+
+/* find the default value for <size> - assuming entire units */
+unsigned long
+max_length(int pno, int is_extended, struct part_desc *ep, int format,
+ unsigned long start, struct disk_desc *z) {
+ unsigned long fu;
+ unsigned long unit = unitsize(format);
+ struct part_desc *partitions = &(z->partitions[0]), *pp = 0;
+
+ /* if containing ep undefined, look at its container */
+ if (ep && ep->p.sys_type == EMPTY_PARTITION)
+ ep = ep->ep;
+
+ if (ep) {
+ if (boxes == NESTED || (boxes == CHAINED && !is_extended))
+ pp = ep;
+ else if (all_logicals_inside_outermost_extended)
+ pp = outer_extended_partition(ep);
+ }
+ fu = pp ? (pp->start + pp->size) / unit : get_disksize(format);
+
+ for(pp = partitions; pp < partitions+pno; pp++)
+ if (!is_parent(pp, ep) && pp->size > 0
+ && pp->start / unit >= start && pp->start / unit < fu)
+ fu = pp->start / unit;
+
+ return (fu > start) ? fu - start : 0;
+}
+
+/* compute starting sector of a partition inside an extended one */
+/* ep is 0 or points to surrounding extended partition */
+int
+compute_start_sect(struct part_desc *p, struct part_desc *ep) {
+ unsigned long base;
+ int inc = (DOS && sectors) ? sectors : 1;
+ int delta;
+
+ if (ep && p->start + p->size >= ep->start + 1)
+ delta = p->start - ep->start - inc;
+ else if (p->start == 0 && p->size > 0)
+ delta = -inc;
+ else
+ delta = 0;
+ if (delta < 0) {
+ p->start -= delta;
+ p->size += delta;
+ if (is_extended(p->p.sys_type) && boxes == ONESECTOR)
+ p->size = inc;
+ else if ((int)(p->size) <= 0) {
+ warn("no room for partition descriptor\n");
+ return 0;
+ }
+ }
+ base = (!ep ? 0
+ : (is_extended(p->p.sys_type) ?
+ outer_extended_partition(ep) : ep)->start);
+ p->ep = ep;
+ if (p->p.sys_type == EMPTY_PARTITION && p->size == 0) {
+ p->p.start_sect = 0;
+ p->p.begin_chs = zero_chs;
+ p->p.end_chs = zero_chs;
+ } else {
+ p->p.start_sect = p->start - base;
+ p->p.begin_chs = ulong_to_chs(p->start);
+ p->p.end_chs = ulong_to_chs(p->start + p->size - 1);
+ }
+ p->p.nr_sects = p->size;
+ return 1;
+}
+
+/* build the extended partition surrounding a given logical partition */
+int
+build_surrounding_extended(struct part_desc *p, struct part_desc *ep,
+ struct disk_desc *z) {
+ int inc = (DOS && sectors) ? sectors : 1;
+ int format = F_SECTOR;
+ struct part_desc *p0 = &(z->partitions[0]), *eep = ep->ep;
+
+ if (boxes == NESTED) {
+ ep->start = first_free(ep-p0, 1, eep, format, p->start, z);
+ ep->size = max_length(ep-p0, 1, eep, format, ep->start, z);
+ if (ep->start > p->start || ep->start + ep->size < p->start + p->size) {
+ warn("cannot build surrounding extended partition\n");
+ return 0;
+ }
+ } else {
+ ep->start = p->start;
+ if(boxes == CHAINED)
+ ep->size = p->size;
+ else
+ ep->size = inc;
+ }
+
+ ep->p.nr_sects = ep->size;
+ ep->p.bootable = 0;
+ ep->p.sys_type = EXTENDED_PARTITION;
+ if (!compute_start_sect(ep, eep) || !compute_start_sect(p, ep)) {
+ ep->p.sys_type = EMPTY_PARTITION;
+ ep->size = 0;
+ return 0;
+ }
+
+ return 1;
+}
+
+int
+read_line(int pno, struct part_desc *ep, char *dev, int interactive,
+ struct disk_desc *z) {
+ unsigned char line[1000];
+ unsigned char *fields[11];
+ int fno, pct = pno%4;
+ struct part_desc p, *orig;
+ unsigned long ff, ff1, ul, ml, ml1, def;
+ int format, lpno, is_extd;
+
+ if (eof || eob)
+ return -1;
+
+ lpno = index_to_linux(pno, z);
+
+ if (interactive) {
+ if (pct == 0 && (show_extended || pno == 0))
+ warn("\n");
+ warn("%8s%d: ", dev, lpno);
+ }
+
+ /* read input line - skip blank lines when reading from a file */
+ do {
+ fno = read_stdin(fields, line, SIZE(fields), SIZE(line));
+ } while(fno == RD_CMD || (fno == 0 && !interactive));
+ if (fno == RD_EOF) {
+ return -1;
+ } else if (fno > 10 && *(fields[10]) != 0) {
+ printf("too many input fields\n");
+ return 0;
+ }
+
+ if (fno == 1 && !strcmp(fields[0], ".")) {
+ eob = 1;
+ return -1;
+ }
+
+ /* use specified format, but round to cylinders if F_MEGABYTE specified */
+ format = 0;
+ if (cylindersize && specified_format == F_MEGABYTE)
+ format = F_CYLINDER;
+
+ orig = (one_only ? &(oldp.partitions[pno]) : 0);
+
+ p = zero_part_desc;
+ p.ep = ep;
+
+ /* first read the type - we need to know whether it is extended */
+ /* stop reading when input blank (defaults) and all is full */
+ is_extd = 0;
+ if (fno == 0) { /* empty line */
+ if (orig && is_extended(orig->p.sys_type))
+ is_extd = 1;
+ ff = first_free(pno, is_extd, ep, format, 0, z);
+ ml = max_length(pno, is_extd, ep, format, ff, z);
+ if (ml == 0 && is_extd == 0) {
+ is_extd = 1;
+ ff = first_free(pno, is_extd, ep, format, 0, z);
+ ml = max_length(pno, is_extd, ep, format, ff, z);
+ }
+ if (ml == 0 && pno >= 4) {
+ /* no free blocks left - don't read any further */
+ warn("No room for more\n");
+ return -1;
+ }
+ }
+ if (fno < 3 || !*(fields[2]))
+ ul = orig ? orig->p.sys_type :
+ (is_extd || (pno > 3 && pct == 1 && show_extended))
+ ? EXTENDED_PARTITION : LINUX_NATIVE;
+ else if(!strcmp(fields[2], "L"))
+ ul = LINUX_NATIVE;
+ else if(!strcmp(fields[2], "S"))
+ ul = LINUX_SWAP;
+ else if(!strcmp(fields[2], "E"))
+ ul = EXTENDED_PARTITION;
+ else if(!strcmp(fields[2], "X"))
+ ul = LINUX_EXTENDED;
+ else if (get_ul(fields[2], &ul, LINUX_NATIVE, 16))
+ return 0;
+ if (ul > 255) {
+ warn("Illegal type\n");
+ return 0;
+ }
+ p.p.sys_type = ul;
+ is_extd = is_extended(ul);
+
+ /* find start */
+ ff = first_free(pno, is_extd, ep, format, 0, z);
+ ff1 = ff * unitsize(format);
+ def = orig ? orig->start : (pno > 4 && pct > 1) ? 0 : ff1;
+ if (fno < 1 || !*(fields[0]))
+ p.start = def;
+ else {
+ if (get_ul(fields[0], &ul, def / unitsize(0), 0))
+ return 0;
+ p.start = ul * unitsize(0);
+ p.start -= (p.start % unitsize(format));
+ }
+
+ /* find length */
+ ml = max_length(pno, is_extd, ep, format, p.start / unitsize(format), z);
+ ml1 = ml * unitsize(format);
+ def = orig ? orig->size : (pno > 4 && pct > 1) ? 0 : ml1;
+ if (fno < 2 || !*(fields[1]))
+ p.size = def;
+ else {
+ if (get_ul(fields[1], &ul, def / unitsize(0), 0))
+ return 0;
+ p.size = ul * unitsize(0) + unitsize(format) - 1;
+ p.size -= (p.size % unitsize(format));
+ }
+ if (p.size > ml1) {
+ warn("Warning: exceeds max allowable size (%lu)\n", ml1 / unitsize(0));
+ if (!force)
+ return 0;
+ }
+ if (p.size == 0 && pno >= 4 && (fno < 2 || !*(fields[1]))) {
+ warn("Warning: empty partition\n");
+ if (!force)
+ return 0;
+ }
+ p.p.nr_sects = p.size;
+
+ if (p.size == 0 && !orig) {
+ if(fno < 1 || !*(fields[0]))
+ p.start = 0;
+ if(fno < 3 || !*(fields[2]))
+ p.p.sys_type = EMPTY_PARTITION;
+ }
+
+ if (p.start < ff1 && p.size > 0) {
+ warn("Warning: bad partition start (earliest %lu)\n",
+ (ff1 + unitsize(0) - 1) / unitsize(0));
+ if (!force)
+ return 0;
+ }
+
+ if (fno < 4 || !*(fields[3]))
+ ul = (orig ? orig->p.bootable : 0);
+ else if (!strcmp(fields[3], "-"))
+ ul = 0;
+ else if (!strcmp(fields[3], "*") || !strcmp(fields[3], "+"))
+ ul = 0x80;
+ else {
+ warn("unrecognized bootable flag - choose - or *\n");
+ return 0;
+ }
+ p.p.bootable = ul;
+
+ if (ep && ep->p.sys_type == EMPTY_PARTITION) {
+ if(!build_surrounding_extended(&p, ep, z))
+ return 0;
+ } else
+ if(!compute_start_sect(&p, ep))
+ return 0;
+
+ { longchs aa = chs_to_longchs(p.p.begin_chs), bb;
+
+ if (fno < 5) {
+ bb = aa;
+ } else if (fno < 7) {
+ warn("partial c,h,s specification?\n");
+ return 0;
+ } else if(get_ul(fields[4], &bb.c, aa.c, 0) ||
+ get_ul(fields[5], &bb.h, aa.h, 0) ||
+ get_ul(fields[6], &bb.s, aa.s, 0))
+ return 0;
+ p.p.begin_chs = longchs_to_chs(bb);
+ }
+ { longchs aa = chs_to_longchs(p.p.end_chs), bb;
+
+ if (fno < 8) {
+ bb = aa;
+ } else if (fno < 10) {
+ warn("partial c,h,s specification?\n");
+ return 0;
+ } else if(get_ul(fields[7], &bb.c, aa.c, 0) ||
+ get_ul(fields[8], &bb.h, aa.h, 0) ||
+ get_ul(fields[9], &bb.s, aa.s, 0))
+ return 0;
+ p.p.end_chs = longchs_to_chs(bb);
+ }
+
+ if (pno > 3 && p.size && show_extended && p.p.sys_type != EMPTY_PARTITION
+ && (is_extended(p.p.sys_type) != (pct == 1))) {
+ warn("Extended partition not where expected\n");
+ if (!force)
+ return 0;
+ }
+
+ z->partitions[pno] = p;
+ if (pno >= z->partno)
+ z->partno += 4; /* reqd for out_partition() */
+
+ if (interactive)
+ out_partition(dev, 0, &(z->partitions[pno]), z);
+
+ return 1;
+}
+
+/* ep either points to the extended partition to contain this one,
+ or to the empty partition that may become extended or is 0 */
+int
+read_partition(char *dev, int interactive, int pno, struct part_desc *ep,
+ struct disk_desc *z) {
+ struct part_desc *p = &(z->partitions[pno]);
+ int i;
+
+ if (one_only) {
+ *p = oldp.partitions[pno];
+ if (one_only_pno != pno)
+ goto ret;
+ } else if (!show_extended && pno > 4 && pno%4)
+ goto ret;
+
+ while (!(i = read_line(pno, ep, dev, interactive, z)))
+ if (!interactive)
+ fatal("bad input\n");
+ if (i < 0) {
+ p->ep = ep;
+ return 0;
+ }
+
+ ret:
+ p->ep = ep;
+ if (pno >= z->partno)
+ z->partno += 4;
+ return 1;
+}
+
+void
+read_partition_chain(char *dev, int interactive, struct part_desc *ep,
+ struct disk_desc *z) {
+ int i, base;
+
+ eob = 0;
+ while (1) {
+ base = z->partno;
+ if (base+4 > SIZE(z->partitions)) {
+ printf("too many partitions\n");
+ break;
+ }
+ for (i=0; i<4; i++)
+ if (!read_partition(dev, interactive, base+i, ep, z))
+ return;
+ for (i=0; i<4; i++) {
+ ep = &(z->partitions[base+i]);
+ if (is_extended(ep->p.sys_type) && ep->size)
+ break;
+ }
+ if (i == 4) {
+ /* nothing found - maybe an empty partition is going
+ to be extended */
+ if (one_only || show_extended)
+ break;
+ ep = &(z->partitions[base+1]);
+ if (ep->size || ep->p.sys_type != EMPTY_PARTITION)
+ break;
+ }
+ }
+}
+
+void
+read_input(char *dev, int interactive, struct disk_desc *z) {
+ int i;
+ struct part_desc *partitions = &(z->partitions[0]), *ep;
+
+ for (i=0; i < SIZE(z->partitions); i++)
+ partitions[i] = zero_part_desc;
+ z->partno = 0;
+
+ if (interactive)
+ warn("
+Input in the following format; absent fields get a default value.
+<start> <size> <type [E,S,L,X,hex]> <bootable [-,*]> <c,h,s> <c,h,s>
+Usually you only need to specify <start> and <size> (and perhaps <type>).
+");
+ eof = 0;
+
+ for (i=0; i<4; i++)
+ read_partition(dev, interactive, i, 0, z);
+ for (i=0; i<4; i++) {
+ ep = partitions+i;
+ if (is_extended(ep->p.sys_type) && ep->size)
+ read_partition_chain(dev, interactive, ep, z);
+ }
+ add_sector_and_offset(z);
+}
+
+/*
+ * G. The command line
+ */
+
+static void version(void) {
+ printf(PROGNAME " version " VERSION " (aeb@cwi.nl, " DATE ")\n");
+}
+
+static void
+usage(void) {
+ version();
+ printf("Usage:
+ " PROGNAME " [options] device ...
+device: something like /dev/hda or /dev/sda
+useful options:
+ -s [or --show-size]: list size of a partition
+ -c [or --id]: print or change partition Id
+ -l [or --list]: list partitions of each device
+ -d [or --dump]: idem, but in a format suitable for later input
+ -i [or --increment]: number cylinders etc. from 1 instead of from 0
+ -uS, -uB, -uC, -uM: accept/report in units of sectors/blocks/cylinders/MB
+ -T [or --list-types]:list the known partition types
+ -D [or --DOS]: for DOS-compatibility: waste a little space
+ -R [or --re-read]: make kernel reread partition table
+ -N# : change only the partition with number #
+ -n : do not actually write to disk
+ -O file : save the sectors that will be overwritten to file
+ -I file : restore these sectors again
+ -v [or --version]: print version
+ -? [or --help]: print this message
+dangerous options:
+ -g [or --show-geometry]: print the kernel's idea of the geometry
+ -x [or --show-extended]: also list extended partitions on output
+ or expect descriptors for them on input
+ -L [or --Linux]: do not complain about things irrelevant for Linux
+ -q [or --quiet]: suppress warning messages
+ You can override the detected geometry using:
+ -C# [or --cylinders #]:set the number of cylinders to use
+ -H# [or --heads #]: set the number of heads to use
+ -S# [or --sectors #]: set the number of sectors to use
+ You can disable all consistency checking with:
+ -f [or --force]: do what I say, even if it is stupid
+");
+ exit(1);
+}
+
+static void
+activate_usage(char *progn) {
+ printf("Usage:
+ %s device list active partitions on device
+ %s device n1 n2 ... activate partitions n1 ..., inactivate the rest
+ %s device activate partition n, inactivate the other ones
+", progn, progn, PROGNAME " -An");
+ exit(1);
+}
+
+static void
+unhide_usage(char *progn) {
+ exit(1);
+}
+
+static char short_opts[] = "cdfgilnqsu:vx?1A::C:DH:I:LN:O:RS:TU::V";
+
+#define PRINT_ID 0400
+#define CHANGE_ID 01000
+
+static const struct option long_opts[] = {
+ { "change-id", no_argument, NULL, 'c' + CHANGE_ID },
+ { "print-id", no_argument, NULL, 'c' + PRINT_ID },
+ { "id", no_argument, NULL, 'c' },
+ { "dump", no_argument, NULL, 'd' },
+ { "force", no_argument, NULL, 'f' },
+ { "show-geometry", no_argument, NULL, 'g' },
+ { "increment", no_argument, NULL, 'i' },
+ { "list", no_argument, NULL, 'l' },
+ { "quiet", no_argument, NULL, 'q' },
+ { "show-size", no_argument, NULL, 's' },
+ { "unit", required_argument, NULL, 'u' },
+ { "version", no_argument, NULL, 'v' },
+ { "show-extended", no_argument, NULL, 'x' },
+ { "help", no_argument, NULL, '?' },
+ { "one-only", no_argument, NULL, '1' },
+ { "cylinders", required_argument, NULL, 'C' },
+ { "heads", required_argument, NULL, 'H' },
+ { "sectors", required_argument, NULL, 'S' },
+ { "activate", optional_argument, NULL, 'A' },
+ { "DOS", no_argument, NULL, 'D' },
+ { "Linux", no_argument, NULL, 'L' },
+ { "re-read", no_argument, NULL, 'R' },
+ { "list-types", no_argument, NULL, 'T' },
+ { "unhide", optional_argument, NULL, 'U' },
+ { "no-reread", no_argument, NULL, 160 },
+ { "IBM", no_argument, NULL, 161 },
+ { "leave-last", no_argument, NULL, 161 },
+/* undocumented flags - not all completely implemented */
+ { "in-order", no_argument, NULL, 128 },
+ { "not-in-order", no_argument, NULL, 129 },
+ { "inside-outer", no_argument, NULL, 130 },
+ { "not-inside-outer", no_argument, NULL, 131 },
+ { "nested", no_argument, NULL, 132 },
+ { "chained", no_argument, NULL, 133 },
+ { "onesector", no_argument, NULL, 134 },
+ { NULL, 0, NULL, 0 }
+};
+
+/* default devices to list */
+static struct devd {
+ char *pref, *letters;
+} defdevs[] = {
+ { "hd", "abcdefgh" },
+ { "sd", "abcde" },
+ { "xd", "ab" }
+};
+
+void do_list(char *dev, int silent);
+void do_size(char *dev, int silent);
+void do_geom(char *dev, int silent);
+void do_fdisk(char *dev);
+void do_reread(char *dev);
+void do_change_id(char *dev, char *part, char *id);
+void do_unhide(char **av, int ac, char *arg);
+void do_activate(char **av, int ac, char *arg);
+
+int total_size;
+
+int
+main(int argc, char **argv) {
+ char *progn;
+ int c;
+ char *dev;
+ int opt_size = 0;
+ int opt_out_geom = 0;
+ int opt_reread = 0;
+ int activate = 0;
+ int do_id = 0;
+ int unhide = 0;
+ int fdisk = 0;
+ char *activatearg = 0;
+ char *unhidearg = 0;
+
+ if (argc < 1)
+ fatal("no command?\n");
+ if ((progn = rindex(argv[0], '/')) == NULL)
+ progn = argv[0];
+ else
+ progn++;
+ if (!strcmp(progn, "activate"))
+ activate = 1; /* equivalent to `fdisk -A' */
+#if 0 /* not important enough to deserve a name */
+ else if (!strcmp(progn, "unhide"))
+ unhide = 1; /* equivalent to `fdisk -U' */
+#endif
+ else
+ fdisk = 1;
+
+ while ((c = getopt_long (argc, argv, short_opts, long_opts, NULL)) != -1) {
+ switch (c) {
+ case 'f':
+ force = 1; break; /* does not imply quiet */
+ case 'g':
+ opt_out_geom = 1; break;
+ case 'i':
+ increment = 1; break;
+ case 'c':
+ case 'c' + PRINT_ID:
+ case 'c' + CHANGE_ID:
+ do_id = c; break;
+ case 'd':
+ dump = 1; /* fall through */
+ case 'l':
+ opt_list = 1; break;
+ case 'n':
+ no_write = 1; break;
+ case 'q':
+ quiet = 1; break;
+ case 's':
+ opt_size = 1; break;
+ case 'u':
+ set_format(*optarg); break;
+ case 'v':
+ version();
+ exit(0);
+ case 'x':
+ show_extended = 1; break;
+ case 'A':
+ activatearg = optarg;
+ activate = 1; break;
+ case 'C':
+ specified_cylinders = atoi(optarg); break;
+ case 'D':
+ DOS = 1; break;
+ case 'H':
+ specified_heads = atoi(optarg); break;
+ case 'L':
+ Linux = 1; break;
+ case 'N':
+ one_only = atoi(optarg); break;
+ case 'I':
+ restore_sector_file = optarg; break;
+ case 'O':
+ save_sector_file = optarg; break;
+ case 'R':
+ opt_reread = 1; break;
+ case 'S':
+ specified_sectors = atoi(optarg); break;
+ case 'T':
+ list_types();
+ exit(0);
+ case 'U':
+ unhidearg = optarg;
+ unhide = 1; break;
+ case 'V':
+ verify = 1; break;
+ case '?':
+ default:
+ usage(); break;
+
+ /* undocumented flags */
+ case 128:
+ partitions_in_order = 1; break;
+ case 129:
+ partitions_in_order = 0; break;
+ case 130:
+ all_logicals_inside_outermost_extended = 1; break;
+ case 131:
+ all_logicals_inside_outermost_extended = 0; break;
+ case 132:
+ boxes = NESTED; break;
+ case 133:
+ boxes = CHAINED; break;
+ case 134:
+ boxes = ONESECTOR; break;
+
+ /* more flags */
+ case 160:
+ no_reread = 1; break;
+ case 161:
+ leave_last = 1; break;
+ }
+ }
+
+ if (optind == argc && (opt_list || opt_out_geom || opt_size || verify)) {
+ struct devd *dp;
+ char *lp;
+ char device[10];
+
+ total_size = 0;
+
+ for(dp = defdevs; dp-defdevs < SIZE(defdevs); dp++) {
+ lp = dp->letters;
+ while(*lp) {
+ sprintf(device, "/dev/%s%c", dp->pref, *lp++);
+ if (opt_out_geom)
+ do_geom(device, 1);
+ if (opt_size)
+ do_size(device, 1);
+ if (opt_list || verify)
+ do_list(device, 1);
+ }
+ }
+
+ if (opt_size)
+ printf("total: %d blocks\n", total_size);
+
+ exit(exit_status);
+ }
+
+ if (optind == argc) {
+ if (activate)
+ activate_usage(fdisk ? "fdisk -A" : progn);
+ else if (unhide)
+ unhide_usage(fdisk ? "fdisk -U" : progn);
+ else
+ usage();
+ }
+
+ if (opt_list || opt_out_geom || opt_size || verify) {
+ while (optind < argc) {
+ if (opt_out_geom)
+ do_geom(argv[optind], 0);
+ if (opt_size)
+ do_size(argv[optind], 0);
+ if (opt_list || verify)
+ do_list(argv[optind], 0);
+ optind++;
+ }
+ exit(exit_status);
+ }
+
+ if (activate) {
+ do_activate(argv+optind, argc-optind, activatearg);
+ exit(exit_status);
+ }
+ if (unhide) {
+ do_unhide(argv+optind, argc-optind, unhidearg);
+ exit(exit_status);
+ }
+ if (do_id) {
+ if ((do_id & PRINT_ID) != 0 && optind != argc-2)
+ fatal("usage: fdisk --print-id device partition-number\n");
+ else if ((do_id & CHANGE_ID) != 0 && optind != argc-3)
+ fatal("usage: fdisk --change-id device partition-number Id\n");
+ else if (optind != argc-3 && optind != argc-2)
+ fatal("usage: fdisk --id device partition-number [Id]\n");
+ do_change_id(argv[optind], argv[optind+1],
+ (optind == argc-2) ? 0 : argv[optind+2]);
+ exit(exit_status);
+ }
+
+ if (optind != argc-1)
+ fatal("can specify only one device (except with -l or -s)\n");
+ dev = argv[optind];
+
+ if (opt_reread)
+ do_reread(dev);
+ else if (restore_sector_file)
+ restore_sectors(dev);
+ else
+ do_fdisk(dev);
+
+ return 0;
+}
+
+/*
+ * H. Listing the current situation
+ */
+
+int
+my_open (char *dev, int rw, int silent) {
+ int fd, mode;
+
+ mode = (rw ? O_RDWR : O_RDONLY);
+ fd = open(dev, mode);
+ if (fd < 0 && !silent) {
+ perror(dev);
+ fatal("cannot open %s %s\n", dev, rw ? "read-write" : "for reading");
+ }
+ return fd;
+}
+
+void
+do_list (char *dev, int silent) {
+ int fd;
+ struct disk_desc *z;
+
+ fd = my_open(dev, 0, silent);
+ if (fd < 0)
+ return;
+
+ z = &oldp;
+
+ free_sectors();
+ get_cylindersize(dev, fd, dump ? 1 : opt_list ? 0 : 1);
+ get_partitions(dev, fd, z);
+
+ if (opt_list)
+ out_partitions(dev, z);
+
+ if (verify) {
+ if (partitions_ok(z))
+ warn("%s: OK\n", dev);
+ else
+ exit_status = 1;
+ }
+}
+
+void
+do_geom (char *dev, int silent) {
+ int fd;
+ struct hd_geometry g;
+
+ fd = my_open(dev, 0, silent);
+ if (fd < 0)
+ return;
+
+ /* get_cylindersize(dev, fd, silent); */
+ if (!ioctl(fd, HDIO_GETGEO, &g))
+ printf("%s: %d cylinders, %d heads, %d sectors/track\n",
+ dev, g.cylinders, g.heads, g.sectors);
+ else
+ printf("%s: unknown geometry\n", dev);
+}
+
+/* for compatibility with earlier fdisk: provide option -s */
+void
+do_size (char *dev, int silent) {
+ int fd, size;
+
+ fd = my_open(dev, 0, silent);
+ if (fd < 0)
+ return;
+
+ if(ioctl(fd, BLKGETSIZE, &size)) {
+ if(!silent) {
+ perror(dev);
+ fatal("BLKGETSIZE ioctl failed for %s\n", dev);
+ }
+ return;
+ }
+
+ size /= 2; /* convert sectors to blocks */
+ if (silent)
+ printf("%s: %d\n", dev, size);
+ else
+ printf("%d\n", size);
+
+ total_size += size;
+}
+
+/*
+ * Activate: usually one wants to have a single primary partition
+ * to be active. OS/2 fdisk makes non-bootable logical partitions
+ * active - I don't know what that means to OS/2 Boot Manager.
+ *
+ * Call: activate /dev/hda 2 5 7 make these partitions active
+ * and the remaining ones inactive
+ * Or: fdisk -A /dev/hda 2 5 7
+ *
+ * If only a single partition must be active, one may also use the form
+ * fdisk -A2 /dev/hda
+ *
+ * With "activate /dev/hda" or "fdisk -A /dev/hda" the active partitions
+ * are listed but not changed. To get zero active partitions, use
+ * "activate /dev/hda none" or "fdisk -A /dev/hda none".
+ * Use something like `echo ",,,*" | fdisk -N2 /dev/hda' to only make
+ * /dev/hda2 active, without changing other partitions.
+ *
+ * A warning will be given if after the change not precisely one primary
+ * partition is active.
+ *
+ * The present syntax was chosen to be (somewhat) compatible with the
+ * activate from the LILO package.
+ */
+void
+set_active (struct disk_desc *z, char *pnam) {
+ int pno;
+
+ pno = asc_to_index(pnam, z);
+ z->partitions[pno].p.bootable = 0x80;
+}
+
+void
+do_activate (char **av, int ac, char *arg) {
+ char *dev = av[0];
+ int fd;
+ int rw, i, pno, lpno;
+ struct disk_desc *z;
+
+ z = &oldp;
+
+ rw = (!no_write && (arg || ac > 1));
+ fd = my_open(dev, rw, 0);
+
+ free_sectors();
+ get_cylindersize(dev, fd, 1);
+ get_partitions(dev, fd, z);
+
+ if (!arg && ac == 1) {
+ /* list active partitions */
+ for (pno=0; pno < z->partno; pno++) {
+ if (z->partitions[pno].p.bootable) {
+ lpno = index_to_linux(pno, z);
+ if (pno == linux_to_index(lpno, z))
+ printf("%s%d\n", dev, lpno);
+ else
+ printf("%s#%d\n", dev, pno);
+ if (z->partitions[pno].p.bootable != 0x80)
+ warn("bad active byte: 0x%x instead of 0x80\n",
+ z->partitions[pno].p.bootable);
+ }
+ }
+ } else {
+ /* clear `active byte' everywhere */
+ for (pno=0; pno < z->partno; pno++)
+ z->partitions[pno].p.bootable = 0;
+
+ /* then set where desired */
+ if (ac == 1)
+ set_active(z, arg);
+ else for(i=1; i<ac; i++)
+ set_active(z, av[i]);
+
+ /* then write to disk */
+ if(write_partitions(dev, fd, z))
+ warn("Done\n\n");
+ else
+ exit_status = 1;
+ }
+ i = 0;
+ for (pno=0; pno < z->partno && pno < 4; pno++)
+ if (z->partitions[pno].p.bootable)
+ i++;
+ if (i != 1)
+ warn("You have %d active primary partitions. This does not matter for LILO,\n"
+ "but the DOS MBR will only boot a disk with 1 active partition.\n", i);
+}
+
+void
+set_unhidden (struct disk_desc *z, char *pnam) {
+ int pno;
+ unsigned char id;
+
+ pno = asc_to_index(pnam, z);
+ id = z->partitions[pno].p.sys_type;
+ if (id == 0x11 || id == 0x14 || id == 0x16 || id == 0x17)
+ id -= 0x10;
+ else
+ fatal("partition %s has id %x and is not hidden\n", pnam, id);
+ z->partitions[pno].p.sys_type = id;
+}
+
+/*
+ * maybe remove and make part of --change-id
+ */
+void
+do_unhide (char **av, int ac, char *arg) {
+ char *dev = av[0];
+ int fd, rw, i;
+ struct disk_desc *z;
+
+ z = &oldp;
+
+ rw = !no_write;
+ fd = my_open(dev, rw, 0);
+
+ free_sectors();
+ get_cylindersize(dev, fd, 1);
+ get_partitions(dev, fd, z);
+
+ /* unhide where desired */
+ if (ac == 1)
+ set_unhidden(z, arg);
+ else for(i=1; i<ac; i++)
+ set_unhidden(z, av[i]);
+
+ /* then write to disk */
+ if(write_partitions(dev, fd, z))
+ warn("Done\n\n");
+ else
+ exit_status = 1;
+}
+
+void do_change_id(char *dev, char *pnam, char *id) {
+ int fd, rw, pno;
+ struct disk_desc *z;
+ unsigned long i;
+
+ z = &oldp;
+
+ rw = !no_write;
+ fd = my_open(dev, rw, 0);
+
+ free_sectors();
+ get_cylindersize(dev, fd, 1);
+ get_partitions(dev, fd, z);
+
+ pno = asc_to_index(pnam, z);
+ if (id == 0) {
+ printf("%x\n", z->partitions[pno].p.sys_type);
+ return;
+ }
+ i = strtoul(id, NULL, 16);
+ if (i > 255)
+ fatal("Bad Id %x\n", i);
+ z->partitions[pno].p.sys_type = i;
+
+ if(write_partitions(dev, fd, z))
+ warn("Done\n\n");
+ else
+ exit_status = 1;
+}
+
+void
+do_reread(char *dev) {
+ int fd;
+
+ fd = my_open(dev, 0, 0);
+ if(reread_ioctl(fd))
+ printf("This disk is currently in use.\n");
+}
+
+/*
+ * I. Writing the new situation
+ */
+
+void
+do_fdisk(char *dev){
+ int fd;
+ int c, answer;
+ struct stat statbuf;
+ int interactive = isatty(0);
+ struct disk_desc *z;
+
+ if (stat(dev, &statbuf) < 0) {
+ perror(dev);
+ fatal("Fatal error: cannot find %s\n", dev);
+ }
+ if (!S_ISBLK(statbuf.st_mode)) {
+ warn("Warning: %s is not a block device\n", dev);
+ }
+ fd = my_open(dev, !no_write, 0);
+
+ if(!no_write && !no_reread) {
+ warn("Checking that no-one is using this disk right now ...\n");
+ if(reread_ioctl(fd)) {
+ printf("
+This disk is currently in use - repartitioning is probably a bad idea.
+Umount all file systems, and swapoff all swap partitions on this disk.
+Use the --no-reread flag to suppress this check.\n");
+ if (!force) {
+ printf("Use the --force flag to overrule all checks.\n");
+ exit(1);
+ }
+ } else
+ warn("OK");
+ }
+
+ z = &oldp;
+
+ free_sectors();
+ get_cylindersize(dev, fd, 0);
+ get_partitions(dev, fd, z);
+
+ printf("Old situation:\n");
+ out_partitions(dev, z);
+
+ if (one_only && (one_only_pno = linux_to_index(one_only, z)) < 0)
+ fatal("Partition %d does not exist, cannot change it\n", one_only);
+
+ z = &newp;
+
+ while(1) {
+
+ read_input(dev, interactive, z);
+
+ printf("New situation:\n");
+ out_partitions(dev, z);
+
+ if (!partitions_ok(z) && !force) {
+ if(!interactive)
+ fatal("I don't like these partitions - nothing changed.\n"
+ "(If you really want this, use the --force option.)\n");
+ else
+ printf("I don't like this - probably you should answer No\n");
+ }
+ ask:
+ if (interactive) {
+ if (no_write)
+ printf("Are you satisfied with this? [ynq] ");
+ else
+ printf("Do you want to write this to disk? [ynq] ");
+ answer = c = getchar();
+ while (c != '\n' && c != EOF)
+ c = getchar();
+ if (c == EOF)
+ printf("\nfdisk: premature end of input\n");
+ if (c == EOF || answer == 'q' || answer == 'Q') {
+ fatal("Quitting - nothing changed\n");
+ } else if (answer == 'n' || answer == 'N') {
+ continue;
+ } else if (answer == 'y' || answer == 'Y') {
+ break;
+ } else {
+ printf("Please answer one of y,n,q\n");
+ goto ask;
+ }
+ } else
+ break;
+ }
+
+ if(write_partitions(dev, fd, z))
+ printf("Successfully wrote the new partition table\n\n");
+ else
+ exit_status = 1;
+
+ reread_disk_partition(dev, fd);
+
+ warn("If you created or changed a DOS partition, /dev/foo7, say, then use dd(1)\n"
+ "to zero the first 512 bytes: dd if=/dev/zero of=/dev/foo7 bs=512 count=1\n"
+ "(See fdisk(8).)\n");
+
+ sync(); /* superstition */
+ sleep(3);
+ exit(exit_status);
+}
diff --git a/disk-utils/sfdisk.examples b/disk-utils/sfdisk.examples
new file mode 100644
index 000000000..13e671d48
--- /dev/null
+++ b/disk-utils/sfdisk.examples
@@ -0,0 +1,264 @@
+Examples of the use of sfdisk 3.0 (to partition a disk)
+Input lines have fields <start>,<size>,<type>... - see sfdisk.8.
+Usually no <start> is given, and input lines start with a comma.
+
+Before doing anything with a disk, make sure it is not in use;
+unmount all its file systems, and say swapoff to its swap partitions.
+(The final BLKRRPART ioctl will fail if anything else still uses
+the disk, and you will have to reboot. It is easier to first make
+sure that nothing uses the disk, e.g., by testing:
+ % umount /dev/sdb1
+ % sfdisk -R /dev/sdb
+ BLKRRPART: Device or resource busy
+ * Device busy for revalidation (usage=2)
+ % swapoff /dev/sdb3
+ % sfdisk -R /dev/sdb
+ * sdb: sdb1 < sdb5 sdb6 > sdb3
+ %
+Note that the starred messages are kernel messages, that may be
+logged somewhere, or written to some other console.
+In sfdisk 3.01 sfdisk automatically does this check, unless told not to.)
+
+1. One big partition:
+ sfdisk /dev/hda << EOF
+ ;
+ EOF
+
+(If there was garbage on the disk before, you may get error messages
+like: `ERROR: sector 0 does not have an msdos signature'
+and `/dev/hda: unrecognized partition'. This does not matter
+if you write an entirely fresh partition table anyway.)
+
+The output will be:
+-----------------------------------------------------------------------
+Old situation:
+...
+New situation:
+Units = cylinders of 208896 bytes, blocks of 1024 bytes, counting from 0
+
+ Device Boot Start End #cyls #blocks Id System
+/dev/hda1 0+ 1023 1024- 208895+ 83 Linux native
+Successfully wrote the new partition table
+ hda: hda1
+-----------------------------------------------------------------------
+Writing and rereading the partition table takes a few seconds -
+don't be alarmed if nothing happens for six seconds or so.
+
+
+2. Three primary partitions: two of size 50MB and the rest:
+ sfdisk /dev/hda -uM << EOF
+ ,50
+ ,50
+ ;
+ EOF
+-----------------------------------------------------------------------
+New situation:
+Units = megabytes of 1048576 bytes, blocks of 1024 bytes, counting from 0
+
+ Device Boot Start End MB #blocks Id System
+/dev/hda1 0+ 50- 51- 51203+ 83 Linux native
+/dev/hda2 50+ 100- 51- 51204 83 Linux native
+/dev/hda3 100+ 203 104- 106488 83 Linux native
+Successfully wrote the new partition table
+ hda: hda1 hda2 hda3
+-----------------------------------------------------------------------
+/dev/hda1 is one block (in fact only half a block) shorter than
+/dev/hda2 because its start had to be shifted away from zero in
+order to leave room for the Master Boot Record (MBR).
+
+
+3. A 1MB OS2 Boot Manager partition, a 50MB DOS partition,
+ and three extended partitions (DOS D:, Linux swap, Linux):
+ sfdisk /dev/hda -uM << EOF
+ ,1,a
+ ,50,6
+ ,,E
+ ;
+ ,20,4
+ ,16,S
+ ;
+ EOF
+-----------------------------------------------------------------------
+ Device Boot Start End MB #blocks Id System
+/dev/hda1 0+ 1- 2- 1223+ a OS/2 Boot Manager
+/dev/hda2 1+ 51- 51- 51204 6 DOS 16-bit FAT >=32M
+/dev/hda3 51+ 203 153- 156468 5 Extended
+/dev/hda4 0 - 0 0 0 Empty
+/dev/hda5 51+ 71- 21- 20603+ 4 DOS 16-bit FAT <32M
+/dev/hda6 71+ 87- 17- 16523+ 82 Linux swap
+/dev/hda7 87+ 203 117- 119339+ 83 Linux native
+Successfully wrote the new partition table
+ hda: hda1 hda2 hda3 < hda5 hda6 hda7 >
+-----------------------------------------------------------------------
+All these rounded numbers look better in cylinder units:
+ % sfdisk -l /dev/hda
+-----------------------------------------------------------------------
+ Device Boot Start End #cyls #blocks Id System
+/dev/hda1 0+ 5 6- 1223+ a OS/2 Boot Manager
+/dev/hda2 6 256 251 51204 6 DOS 16-bit FAT >=32M
+/dev/hda3 257 1023 767 156468 5 Extended
+/dev/hda4 0 - 0 0 0 Empty
+/dev/hda5 257+ 357 101- 20603+ 4 DOS 16-bit FAT <32M
+/dev/hda6 358+ 438 81- 16523+ 82 Linux swap
+/dev/hda7 439+ 1023 585- 119339+ 83 Linux native
+-----------------------------------------------------------------------
+But still - why does /dev/hda5 not start on a cylinder boundary?
+Because it is contained in an extended partition that does.
+Of the chain of extended partitions, usually only the first is
+shown. (The others have no name under Linux anyway.) But
+these additional extended partitions can be made visible:
+ % sfdisk -l -x /dev/hda
+-----------------------------------------------------------------------
+ Device Boot Start End #cyls #blocks Id System
+/dev/hda1 0+ 5 6- 1223+ a OS/2 Boot Manager
+/dev/hda2 6 256 251 51204 6 DOS 16-bit FAT >=32M
+/dev/hda3 257 1023 767 156468 5 Extended
+/dev/hda4 0 - 0 0 0 Empty
+
+/dev/hda5 257+ 357 101- 20603+ 4 DOS 16-bit FAT <32M
+ - 358 1023 666 135864 5 Extended
+ - 257 256 0 0 0 Empty
+ - 257 256 0 0 0 Empty
+
+/dev/hda6 358+ 438 81- 16523+ 82 Linux swap
+ - 439 1023 585 119340 5 Extended
+ - 358 357 0 0 0 Empty
+ - 358 357 0 0 0 Empty
+
+/dev/hda7 439+ 1023 585- 119339+ 83 Linux native
+ - 439 438 0 0 0 Empty
+ - 439 438 0 0 0 Empty
+ - 439 438 0 0 0 Empty
+-----------------------------------------------------------------------
+
+Why the empty 4th input line? The description of the extended partitions
+starts after that of the four primary partitions.
+You force an empty partition with a ",0" input line, but here all
+space was divided already, so the fourth partition became empty
+automatically.
+
+How did I know about 4,6,a,E,S? Well, E,S,L stand for Extended,
+Swap and Linux. The other values are hexadecimal and come from
+the table:
+ % sfdisk -T
+ Id Name
+
+ 0 Empty
+ 1 DOS 12-bit FAT
+ 2 XENIX root
+ 3 XENIX usr
+ 4 DOS 16-bit FAT <32M
+ 5 Extended
+ 6 DOS 16-bit FAT >=32M
+ 7 OS/2 HPFS or QNX or Advanced UNIX
+ 8 AIX data
+ 9 AIX boot or Coherent
+ a OS/2 Boot Manager
+ ...
+
+
+4. Preserving the sectors changed by sfdisk.
+ % sfdisk -O save-hdd-partition-sectors /dev/hda
+ ...
+ will write the sectors overwritten by sfdisk to file.
+ If you notice that you trashed some partition, you may
+ be able to restore things by
+ % sfdisk -I save-hdd-partition-sectors /dev/hda
+ %
+
+5. Preserving some old partitions.
+ % sfdisk -N2 /dev/hda
+ ...
+ will only change the partition /dev/hda2, and leave the rest
+ unchanged. The most obvious application is to change an Id:
+ % sfdisk -N7 /dev/hda
+ ,,63
+ %
+-----------------------------------------------------------------------
+Old situation:
+
+ Device Boot Start End #cyls #blocks Id System
+/dev/hda1 0+ 5 6- 1223+ a OS/2 Boot Manager
+...
+/dev/hda6 358+ 438 81- 16523+ 82 Linux swap
+/dev/hda7 439+ 1023 585- 119339+ 83 Linux native
+
+New situation:
+
+ Device Boot Start End #cyls #blocks Id System
+/dev/hda1 0+ 5 6- 1223+ a OS/2 Boot Manager
+...
+/dev/hda6 358+ 438 81- 16523+ 82 Linux swap
+/dev/hda7 439+ 1023 585- 119339+ 63 GNU HURD
+-----------------------------------------------------------------------
+ Note that changing a logical partition into an empty partition
+ will decrease the number of all subsequent logical partitions.
+
+6. Deleting a partition.
+At first I thought of having an option -X# for deleting partitions,
+but there are several ways in which a partition can be deleted, and
+it is probably better to handle this just as a general change.
+ % sfdisk -d /dev/hda > ohda
+will write the current tables on the file `ohda'.
+-----------------------------------------------------------------------
+% cat ohda
+# partition table of /dev/hda
+unit: sectors
+
+/dev/hda1 : start= 1, size= 40799, Id= 5
+/dev/hda2 : start= 40800, size= 40800, Id=83
+/dev/hda3 : start= 81600, size= 336192, Id=83
+/dev/hda4 : start= 0, size= 0, Id= 0
+/dev/hda5 : start= 2, size= 40798, Id=83
+-----------------------------------------------------------------------
+In order to delete the partition on /dev/hda3, edit this file
+and feed the result to sfdisk again.
+-----------------------------------------------------------------------
+% emacs ohda
+% cat ohda
+# partition table of /dev/hda
+unit: sectors
+
+/dev/hda1 : start= 1, size= 40799, Id= 5
+/dev/hda2 : start= 40800, size= 40800, Id=83
+/dev/hda3 : start= 0, size= 0, Id= 0
+/dev/hda4 : start= 0, size= 0, Id= 0
+/dev/hda5 : start= 2, size= 40798, Id=83
+% sfdisk /dev/hda < ohda
+Old situation:
+Units = cylinders of 208896 bytes, blocks of 1024 bytes, counting from 0
+
+ Device Boot Start End #cyls #blocks Id System
+/dev/hda1 0+ 99 100- 20399+ 5 Extended
+/dev/hda2 100 199 100 20400 83 Linux native
+/dev/hda3 200 1023 824 168096 83 Linux native
+/dev/hda4 0 - 0 0 0 Empty
+/dev/hda5 0+ 99 100- 20399 83 Linux native
+New situation:
+Units = sectors of 512 bytes, counting from 0
+
+ Device Boot Start End #sectors Id System
+/dev/hda1 1 40799 40799 5 Extended
+/dev/hda2 40800 81599 40800 83 Linux native
+/dev/hda3 0 - 0 0 Empty
+/dev/hda4 0 - 0 0 Empty
+/dev/hda5 2 40799 40798 83 Linux native
+Successfully wrote the new partition table
+% sfdisk -l -V /dev/hda
+
+Disk /dev/hda: 12 heads, 34 sectors, 1024 cylinders
+Units = cylinders of 208896 bytes, blocks of 1024 bytes, counting from 0
+
+ Device Boot Start End #cyls #blocks Id System
+/dev/hda1 0+ 99 100- 20399+ 5 Extended
+/dev/hda2 100 199 100 20400 83 Linux native
+/dev/hda3 0 - 0 0 0 Empty
+/dev/hda4 0 - 0 0 0 Empty
+/dev/hda5 0+ 99 100- 20399 83 Linux native
+/dev/hda: OK
+-----------------------------------------------------------------------
+This is a good way of making changes: dump the current status
+to file, edit the file, and feed it to sfdisk.
+Preserving the file on some other disk could be useful:
+if ever the MBR gets thrashed it can be used to restore
+the old situation.