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-rw-r--r--disk-utils/fsck.minix.c862
1 files changed, 862 insertions, 0 deletions
diff --git a/disk-utils/fsck.minix.c b/disk-utils/fsck.minix.c
new file mode 100644
index 000000000..209f9ce71
--- /dev/null
+++ b/disk-utils/fsck.minix.c
@@ -0,0 +1,862 @@
+/*
+ * fsck.c - a file system consistency checker for Linux.
+ *
+ * (C) 1991, 1992 Linus Torvalds. This file may be redistributed
+ * as per the GNU copyleft.
+ */
+
+/*
+ * 09.11.91 - made the first rudimetary functions
+ *
+ * 10.11.91 - updated, does checking, no repairs yet.
+ * Sent out to the mailing-list for testing.
+ *
+ * 14.11.91 - Testing seems to have gone well. Added some
+ * correction-code, and changed some functions.
+ *
+ * 15.11.91 - More correction code. Hopefully it notices most
+ * cases now, and tries to do something about them.
+ *
+ * 16.11.91 - More corrections (thanks to Mika Jalava). Most
+ * things seem to work now. Yeah, sure.
+ *
+ *
+ * 19.04.92 - Had to start over again from this old version, as a
+ * kernel bug ate my enhanced fsck in february.
+ *
+ * 28.02.93 - added support for different directory entry sizes..
+ *
+ * Sat Mar 6 18:59:42 1993, faith@cs.unc.edu: Output namelen with
+ * super-block information
+ *
+ * Sat Oct 9 11:17:11 1993, faith@cs.unc.edu: make exit status conform
+ * to that required by fsutil
+ *
+ * Mon Jan 3 11:06:52 1994 - Dr. Wettstein (greg%wind.uucp@plains.nodak.edu)
+ * Added support for file system valid flag. Also
+ * added program_version variable and output of
+ * program name and version number when program
+ * is executed.
+ *
+ * 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)
+ *
+ * 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
+ * unless you can be sure nobody is writing to it (and remember that the
+ * kernel can write to it when it searches for files).
+ *
+ * Usuage: fsck [-larvsm] device
+ * -l for a listing of all the filenames
+ * -a for automatic repairs (not implemented)
+ * -r for repairs (interactive) (not implemented)
+ * -v for verbose (tells how many files)
+ * -s for super-block info
+ * -m for minix-like "mode not cleared" warnings
+ * -f force filesystem check even if filesystem marked as valid
+ *
+ * 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 :-).
+ */
+
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+#include <fcntl.h>
+#include <ctype.h>
+#include <stdlib.h>
+#include <termios.h>
+#include <mntent.h>
+#include <sys/stat.h>
+
+#include <linux/fs.h>
+#include <linux/minix_fs.h>
+
+#ifndef __GNUC__
+#error "needs gcc for the bitop-__asm__'s"
+#endif
+
+#ifndef __linux__
+#define volatile
+#endif
+
+#define ROOT_INO 1
+
+#define UPPER(size,n) ((size+((n)-1))/(n))
+#define INODE_SIZE (sizeof(struct minix_inode))
+#define INODE_BLOCKS UPPER(INODES,MINIX_INODES_PER_BLOCK)
+#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 * device_name = NULL;
+static int IN;
+static int repair=0, automatic=0, verbose=0, list=0, show=0, warn_mode=0,
+ force=0;
+static int directory=0, regular=0, blockdev=0, chardev=0, links=0,
+ symlinks=0, total=0;
+
+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;
+
+/* File-name data */
+#define MAX_DEPTH 50
+static int name_depth = 0;
+static char name_list[MAX_DEPTH][NAME_MAX+1];
+
+static char * inode_buffer = NULL;
+#define Inode (((struct minix_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)
+#define IMAPS ((unsigned long)Super.s_imap_blocks)
+#define ZMAPS ((unsigned long)Super.s_zmap_blocks)
+#define FIRSTZONE ((unsigned long)Super.s_firstdatazone)
+#define ZONESIZE ((unsigned long)Super.s_log_zone_size)
+#define MAXSIZE ((unsigned long)Super.s_max_size)
+#define MAGIC (Super.s_magic)
+#define NORM_FIRSTZONE (2+IMAPS+ZMAPS+INODE_BLOCKS)
+
+static char inode_map[BLOCK_SIZE * MINIX_I_MAP_SLOTS];
+static char zone_map[BLOCK_SIZE * MINIX_Z_MAP_SLOTS];
+
+static unsigned char * inode_count = NULL;
+static unsigned char * zone_count = NULL;
+
+void recursive_check(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")
+
+#define inode_in_use(x) (bit(inode_map,(x)))
+#define zone_in_use(x) (bit(zone_map,(x)-FIRSTZONE+1))
+
+#define mark_inode(x) (setbit(inode_map,(x)),changed=1)
+#define unmark_inode(x) (clrbit(inode_map,(x)),changed=1)
+
+#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)
+{
+ fprintf(stderr,fmt_string,program_name,device_name);
+ exit(status);
+}
+
+#define usage() fatal_error("Usage: %s [-larvsmf] /dev/name\n",16)
+#define die(str) fatal_error("%s: " str "\n",8)
+
+/*
+ * This simply goes through the file-name data and prints out the
+ * current file.
+ */
+void print_current_name(void)
+{
+ int i=0;
+
+ while (i<name_depth)
+ printf("/%.*s",namelen,name_list[i++]);
+}
+
+int ask(const char * string,int def)
+{
+ int c;
+
+ if (!repair) {
+ printf("\n");
+ errors_uncorrected = 1;
+ return 0;
+ }
+ if (automatic) {
+ printf("\n");
+ if (!def)
+ errors_uncorrected = 1;
+ return def;
+ }
+ printf(def?"%s (y/n)? ":"%s (n/y)? ",string);
+ for (;;) {
+ fflush(stdout);
+ if ((c=getchar())==EOF) {
+ if (!def)
+ errors_uncorrected = 1;
+ return def;
+ }
+ c=toupper(c);
+ if (c == 'Y') {
+ def = 1;
+ break;
+ } else if (c == 'N') {
+ def = 0;
+ break;
+ } else if (c == ' ' || c == '\n')
+ break;
+ }
+ if (def)
+ printf("y\n");
+ else {
+ printf("n\n");
+ errors_uncorrected = 1;
+ }
+ return def;
+}
+
+/*
+ * Make certain that we aren't checking a filesystem that is on a
+ * mounted partition. Code adapted from e2fsck, Copyright (C) 1993,
+ * 1994 Theodore Ts'o. Also licensed under GPL.
+ */
+static void check_mount(void)
+{
+ FILE * f;
+ struct mntent * mnt;
+ int cont;
+ int fd;
+
+ if ((f = setmntent (MOUNTED, "r")) == NULL)
+ return;
+ while ((mnt = getmntent (f)) != NULL)
+ if (strcmp (device_name, mnt->mnt_fsname) == 0)
+ break;
+ endmntent (f);
+ if (!mnt)
+ return;
+
+ /*
+ * If the root is mounted read-only, then /etc/mtab is
+ * probably not correct; so we won't issue a warning based on
+ * it.
+ */
+ fd = open(MOUNTED, O_RDWR);
+ if (fd < 0 && errno == EROFS)
+ return;
+ else
+ close(fd);
+
+ printf ("%s is mounted. ", device_name);
+ if (isatty(0) && isatty(1))
+ cont = ask("Do you really want to continue", 0);
+ else
+ cont = 0;
+ if (!cont) {
+ printf ("check aborted.\n");
+ exit (0);
+ }
+ return;
+}
+
+/*
+ * check_zone_nr checks to see that *nr is a valid zone nr. If it
+ * isn't, it will possibly be repaired. Check_zone_nr sets *corrected
+ * if an error was corrected, and returns the zone (0 for no zone
+ * or a bad zone-number).
+ */
+int check_zone_nr(unsigned short * 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.
+ */
+void read_block(unsigned int nr, char * addr)
+{
+ if (!nr) {
+ memset(addr,0,BLOCK_SIZE);
+ return;
+ }
+ if (BLOCK_SIZE*nr != lseek(IN, BLOCK_SIZE*nr, SEEK_SET)) {
+ printf("Read error: unable to seek to block in file '");
+ print_current_name();
+ printf("'\n");
+ memset(addr,0,BLOCK_SIZE);
+ errors_uncorrected = 1;
+ } else if (BLOCK_SIZE != read(IN, addr, BLOCK_SIZE)) {
+ printf("Read error: bad block in file '");
+ print_current_name();
+ printf("'\n");
+ memset(addr,0,BLOCK_SIZE);
+ errors_uncorrected = 1;
+ }
+}
+
+/*
+ * write_block writes block nr to disk.
+ */
+void write_block(unsigned int nr, char * addr)
+{
+ if (!nr)
+ return;
+ if (nr < FIRSTZONE || nr >= ZONES) {
+ printf("Internal error: trying to write bad block\n"
+ "Write request ignored\n");
+ errors_uncorrected = 1;
+ return;
+ }
+ if (BLOCK_SIZE*nr != lseek(IN, BLOCK_SIZE*nr, SEEK_SET))
+ die("seek failed in write_block");
+ if (BLOCK_SIZE != write(IN, addr, BLOCK_SIZE)) {
+ printf("Write error: bad block in file '");
+ print_current_name();
+ printf("'\n");
+ errors_uncorrected = 1;
+ }
+}
+
+/*
+ * map-block calculates the absolute block nr of a block in a file.
+ * It sets 'changed' if the inode has needed changing, and re-writes
+ * any indirect blocks with errors.
+ */
+int map_block(struct minix_inode * inode, unsigned int blknr)
+{
+ unsigned short ind[BLOCK_SIZE>>1];
+ unsigned short dind[BLOCK_SIZE>>1];
+ int blk_chg, block, result;
+
+ if (blknr<7)
+ return check_zone_nr(inode->i_zone + blknr, &changed);
+ blknr -= 7;
+ if (blknr<512) {
+ block = check_zone_nr(inode->i_zone + 7, &changed);
+ read_block(block, (char *) ind);
+ blk_chg = 0;
+ result = check_zone_nr(blknr + ind, &blk_chg);
+ if (blk_chg)
+ write_block(block, (char *) ind);
+ return result;
+ }
+ blknr -= 512;
+ block = check_zone_nr(inode->i_zone + 8, &changed);
+ read_block(block, (char *) dind);
+ blk_chg = 0;
+ result = check_zone_nr(dind + (blknr/512), &blk_chg);
+ if (blk_chg)
+ write_block(block, (char *) dind);
+ block = result;
+ read_block(block, (char *) ind);
+ blk_chg = 0;
+ result = check_zone_nr(ind + (blknr%512), &blk_chg);
+ if (blk_chg)
+ write_block(block, (char *) ind);
+ return result;
+}
+
+void write_super_block(void)
+{
+ /*
+ * Set the state of the filesystem based on whether or not there
+ * are uncorrected errors. The filesystem valid flag is
+ * unconditionally set if we get this far.
+ */
+ Super.s_state |= MINIX_VALID_FS;
+ if ( errors_uncorrected )
+ Super.s_state |= MINIX_ERROR_FS;
+ else
+ Super.s_state &= ~MINIX_ERROR_FS;
+
+ if (BLOCK_SIZE != lseek(IN, BLOCK_SIZE, SEEK_SET))
+ die("seek failed in write_super_block");
+ if (BLOCK_SIZE != write(IN, super_block_buffer, BLOCK_SIZE))
+ die("unable to write super-block");
+
+ return;
+}
+
+void write_tables(void)
+{
+ write_super_block();
+
+ if (IMAPS*BLOCK_SIZE != write(IN,inode_map,IMAPS*BLOCK_SIZE))
+ die("Unable to write inode map");
+ if (ZMAPS*BLOCK_SIZE != write(IN,zone_map,ZMAPS*BLOCK_SIZE))
+ die("Unable to write zone map");
+ if (INODE_BUFFER_SIZE != write(IN,inode_buffer,INODE_BUFFER_SIZE))
+ die("Unable to write inodes");
+}
+
+void read_tables(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))
+ die("unable to read super block");
+ if (MAGIC == MINIX_SUPER_MAGIC) {
+ namelen = 14;
+ dirsize = 16;
+ } else if (MAGIC == MINIX_SUPER_MAGIC2) {
+ namelen = 30;
+ dirsize = 32;
+ } else
+ die("bad magic number in super-block");
+ if (ZONESIZE != 0 || BLOCK_SIZE != 1024)
+ die("Only 1k blocks/zones supported");
+ if (!IMAPS || IMAPS > MINIX_I_MAP_SLOTS)
+ 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");
+ inode_buffer = malloc(INODE_BUFFER_SIZE);
+ if (!inode_buffer)
+ die("Unable to allocate buffer for inodes");
+ inode_count = malloc(INODES);
+ if (!inode_count)
+ die("Unable to allocate buffer for inode count");
+ zone_count = malloc(ZONES);
+ if (!zone_count)
+ die("Unable to allocate buffer for zone count");
+ if (IMAPS*BLOCK_SIZE != read(IN,inode_map,IMAPS*BLOCK_SIZE))
+ die("Unable to read inode map");
+ if (ZMAPS*BLOCK_SIZE != read(IN,zone_map,ZMAPS*BLOCK_SIZE))
+ die("Unable to read zone map");
+ if (INODE_BUFFER_SIZE != read(IN,inode_buffer,INODE_BUFFER_SIZE))
+ die("Unable to read inodes");
+ if (NORM_FIRSTZONE != FIRSTZONE) {
+ printf("Warning: Firstzone != Norm_firstzone\n");
+ errors_uncorrected = 1;
+ }
+ if (show) {
+ printf("%d inodes\n",INODES);
+ printf("%d blocks\n",ZONES);
+ printf("Firstdatazone=%d (%d)\n",FIRSTZONE,NORM_FIRSTZONE);
+ printf("Zonesize=%d\n",BLOCK_SIZE<<ZONESIZE);
+ printf("Maxsize=%d\n",MAXSIZE);
+ printf("Filesystem state=%d\n", Super.s_state);
+ printf("namelen=%d\n\n",namelen);
+ }
+}
+
+struct minix_inode * get_inode(unsigned int nr)
+{
+ struct minix_inode * inode;
+
+ if (!nr || nr >= INODES)
+ return NULL;
+ total++;
+ inode = Inode + 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;
+}
+
+void check_root(void)
+{
+ struct minix_inode * inode = Inode + ROOT_INO;
+
+ if (!inode || !S_ISDIR(inode->i_mode))
+ die("root inode isn't a directory");
+}
+
+static int add_zone(unsigned short * znr, int * corrected)
+{
+ int result;
+ int block;
+
+ result = 0;
+ block = check_zone_nr(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];
+ int i, chg_blk=0;
+ int block;
+
+ block = add_zone(znr, corrected);
+ if (!block)
+ return;
+ read_block(block, blk);
+ for (i=0 ; i < (BLOCK_SIZE>>1) ; i++)
+ add_zone(i + (unsigned short *) 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];
+ int i, blk_chg=0;
+ int block;
+
+ block = add_zone(znr, corrected);
+ if (!block)
+ return;
+ read_block(block, blk);
+ for (i=0 ; i < (BLOCK_SIZE>>1) ; i++)
+ add_zone_ind(i + (unsigned short *) blk, &blk_chg);
+ if (blk_chg)
+ write_block(block, blk);
+}
+
+void check_zones(unsigned int i)
+{
+ struct minix_inode * inode;
+
+ if (!i || i >= INODES)
+ return;
+ if (inode_count[i] > 1) /* have we counted this file already? */
+ return;
+ inode = Inode + 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_zone(i + inode->i_zone, &changed);
+ add_zone_ind(7 + inode->i_zone, &changed);
+ add_zone_dind(8 + inode->i_zone, &changed);
+}
+
+void check_file(struct minix_inode * dir, unsigned int offset)
+{
+ static char blk[BLOCK_SIZE];
+ struct minix_inode * inode;
+ int ino;
+ char * name;
+ int block;
+
+ block = map_block(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;
+ }
+ inode = get_inode(ino);
+ 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;
+ if (name_depth < MAX_DEPTH)
+ strncpy(name_list[name_depth],name,namelen);
+ 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_zones(ino);
+ if (inode && S_ISDIR(inode->i_mode))
+ recursive_check(ino);
+ name_depth--;
+ return;
+}
+
+void recursive_check(unsigned int ino)
+{
+ struct minix_inode * dir;
+ unsigned int offset;
+
+ dir = Inode + ino;
+ if (!S_ISDIR(dir->i_mode))
+ die("internal error");
+ if (dir->i_size < 32) {
+ print_current_name();
+ printf(": bad directory: size<32");
+ errors_uncorrected = 1;
+ }
+ for (offset = 0 ; offset < dir->i_size ; offset += dirsize)
+ check_file(dir,offset);
+}
+
+int bad_zone(int i)
+{
+ char buffer[1024];
+
+ if (BLOCK_SIZE*i != lseek(IN, BLOCK_SIZE*i, SEEK_SET))
+ die("seek failed in bad_zone");
+ return (BLOCK_SIZE != read(IN, buffer, BLOCK_SIZE));
+}
+
+void check_counts(void)
+{
+ int i;
+
+ for (i=1 ; i < INODES ; i++) {
+ if (!inode_in_use(i) && Inode[i].i_mode && warn_mode) {
+ printf("Inode %d mode not cleared.",i);
+ if (ask("Clear",1)) {
+ Inode[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 (Inode[i].i_nlinks != inode_count[i]) {
+ printf("Inode %d (mode = %07o), i_nlinks=%d, counted=%d.",
+ i,Inode[i].i_mode,Inode[i].i_nlinks,inode_count[i]);
+ if (ask("Set i_nlinks to count",1)) {
+ Inode[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]);
+ }
+}
+
+void check(void)
+{
+ memset(inode_count,0,INODES*sizeof(*inode_count));
+ memset(zone_count,0,ZONES*sizeof(*zone_count));
+ check_zones(ROOT_INO);
+ recursive_check(ROOT_INO);
+ check_counts();
+}
+
+int main(int argc, char ** argv)
+{
+ struct termios termios,tmp;
+ int count;
+ int retcode = 0;
+
+ 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)
+ usage();
+ else
+ device_name = argv[0];
+ else while (*++argv[0])
+ switch (argv[0][0]) {
+ case 'l': list=1; break;
+ case 'a': automatic=1; repair=1; break;
+ case 'r': automatic=0; repair=1; break;
+ case 'v': verbose=1; break;
+ case 's': show=1; break;
+ case 'm': warn_mode=1; break;
+ case 'f': force=1; break;
+ default: usage();
+ }
+ }
+ if (!device_name)
+ usage();
+ check_mount(); /* trying to check a mounted filesystem? */
+ 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();
+
+ /*
+ * Determine whether or not we should continue with the checking.
+ * This is based on the status of the filesystem valid and error
+ * flags and whether or not the -f switch was specified on the
+ * command line.
+ */
+ printf("%s, %s\n", program_name, program_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)
+ printf("Forcing filesystem check on %s.\n", device_name);
+ else if (repair)
+ printf("Filesystem on %s is dirty, needs checking.\n",\
+ device_name);
+
+ 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),
+ 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),
+ 100*(ZONES-free)/ZONES);
+ printf("\n%6d regular files\n"
+ "%6d directories\n"
+ "%6d character device files\n"
+ "%6d block device files\n"
+ "%6d links\n"
+ "%6d symbolic links\n"
+ "------\n"
+ "%6d files\n",
+ regular,directory,chardev,blockdev,
+ links-2*directory+1,symlinks,total-2*directory+1);
+ }
+ if (changed) {
+ write_tables();
+ printf( "----------------------------\n"
+ "FILE SYSTEM HAS BEEN CHANGED\n"
+ "----------------------------\n");
+ for (count=0 ; count<3 ; count++)
+ sync();
+ }
+ else if ( repair )
+ write_super_block();
+
+ if (repair && !automatic)
+ tcsetattr(0,TCSANOW,&termios);
+
+ if (changed)
+ retcode += 3;
+ if (errors_uncorrected)
+ retcode += 4;
+ return retcode;
+}
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-06-08 03:40:00 +0200