1 files changed, 253 insertions, 0 deletions
diff --git a/fdisks/fdisk.h b/fdisks/fdisk.h
new file mode 100644
index 000000000..51a63b228
--- /dev/null
+++ b/fdisks/fdisk.h
@@ -0,0 +1,253 @@
+/*
+   fdisk.h
+*/
+
+#include "c.h"
+
+#define DEFAULT_SECTOR_SIZE	512
+#define MAX_SECTOR_SIZE	2048
+#define SECTOR_SIZE	512	/* still used in BSD code */
+#define MAXIMUM_PARTS	60
+
+#define ACTIVE_FLAG     0x80
+
+#define EXTENDED        0x05
+#define WIN98_EXTENDED  0x0f
+#define LINUX_PARTITION 0x81
+#define LINUX_SWAP      0x82
+#define LINUX_NATIVE    0x83
+#define LINUX_EXTENDED  0x85
+#define LINUX_LVM       0x8e
+#define LINUX_RAID      0xfd
+
+#define ALIGN_UP	1
+#define ALIGN_DOWN	2
+#define ALIGN_NEAREST	3
+
+#define LINE_LENGTH	800
+
+#define IS_EXTENDED(i) \
+	((i) == EXTENDED || (i) == WIN98_EXTENDED || (i) == LINUX_EXTENDED)
+
+#define cround(n)	(display_in_cyl_units ? ((n)/units_per_sector)+1 : (n))
+#define scround(x)	(((x)+units_per_sector-1)/units_per_sector)
+
+/* fdisk debugging flags/options */
+#define FDISK_DEBUG_INIT	(1 << 1)
+#define FDISK_DEBUG_CONTEXT	(1 << 2)
+#define FDISK_DEBUG_TOPOLOGY    (1 << 3)
+#define FDISK_DEBUG_GEOMETRY    (1 << 4)
+#define FDISK_DEBUG_ALL		0xFFFF
+
+# define ON_DBG(m, x)	do { \
+				if ((FDISK_DEBUG_ ## m) & fdisk_debug_mask) { \
+					x; \
+				}	   \
+			} while (0)
+
+# define DBG(m, x)	do { \
+				if ((FDISK_DEBUG_ ## m) & fdisk_debug_mask) { \
+					fprintf(stderr, "%d: fdisk: %8s: ", getpid(), # m); \
+					x;				\
+				} \
+			} while (0)
+
+# define DBG_FLUSH	do { \
+				if (fdisk_debug_mask && \
+				    fdisk_debug_mask != FDISK_DEBUG_INIT) \
+					fflush(stderr);			\
+			} while(0)
+
+static inline void __attribute__ ((__format__ (__printf__, 1, 2)))
+dbgprint(const char *mesg, ...)
+{
+	va_list ap;
+	va_start(ap, mesg);
+	vfprintf(stderr, mesg, ap);
+	va_end(ap);
+	fputc('\n', stderr);
+}
+
+extern int fdisk_debug_mask;
+extern void fdisk_init_debug(int mask);
+
+struct partition {
+	unsigned char boot_ind;         /* 0x80 - active */
+	unsigned char head;             /* starting head */
+	unsigned char sector;           /* starting sector */
+	unsigned char cyl;              /* starting cylinder */
+	unsigned char sys_ind;          /* What partition type */
+	unsigned char end_head;         /* end head */
+	unsigned char end_sector;       /* end sector */
+	unsigned char end_cyl;          /* end cylinder */
+	unsigned char start4[4];        /* starting sector counting from 0 */
+	unsigned char size4[4];         /* nr of sectors in partition */
+} __attribute__ ((packed));
+
+enum menutype {
+	MAIN_MENU,
+	EXPERT_MENU,
+};
+
+enum failure {
+	ioctl_error,
+	unable_to_read,
+	unable_to_seek,
+	unable_to_write
+};
+
+typedef unsigned long long sector_t;
+
+/*
+ * Legacy CHS based geometry
+ */
+struct fdisk_geometry {
+	unsigned int heads;
+	sector_t sectors;
+	sector_t cylinders;
+};
+
+struct fdisk_context {
+	int dev_fd;         /* device descriptor */
+	char *dev_path;     /* device path */
+	unsigned char *mbr; /* buffer with master boot record */
+
+	/* topology */
+	unsigned long io_size;		/* I/O size used by fdisk */
+	unsigned long optimal_io_size;	/* optional I/O returned by device */
+	unsigned long min_io_size;	/* minimal I/O size */
+	unsigned long phy_sector_size;	/* physical size */
+	unsigned long sector_size;	/* logical size */
+	unsigned long alignment_offset;
+
+	/* geometry */
+	sector_t total_sectors; /* in logical sectors */
+	struct fdisk_geometry geom;
+};
+
+extern struct fdisk_context *fdisk_new_context_from_filename(const char *fname, int readonly);
+extern int fdisk_dev_has_topology(struct fdisk_context *cxt);
+extern int fdisk_dev_sectsz_is_default(struct fdisk_context *cxt);
+extern void fdisk_free_context(struct fdisk_context *cxt);
+extern void fdisk_mbr_zeroize(struct fdisk_context *cxt);
+extern void fdisk_geom_set_cyls(struct fdisk_context *cxt);
+
+/* prototypes for fdisk.c */
+extern char *disk_device, *line_ptr;
+extern int fd, partitions;
+extern unsigned int display_in_cyl_units, units_per_sector;
+extern void change_units(struct fdisk_context *cxt);
+extern void fatal(struct fdisk_context *cxt, enum failure why);
+extern int  get_partition(struct fdisk_context *cxt, int warn, int max);
+extern void list_types(struct systypes *sys);
+extern int read_line (int *asked);
+extern char read_char(char *mesg);
+extern int read_hex(struct systypes *sys);
+extern void reread_partition_table(struct fdisk_context *cxt, int leave);
+extern struct partition *get_part_table(int);
+extern int valid_part_table_flag(unsigned char *b);
+extern unsigned int read_int(struct fdisk_context *cxt,
+			     unsigned int low, unsigned int dflt,
+			     unsigned int high, unsigned int base, char *mesg);
+extern void print_menu(enum menutype);
+extern void print_partition_size(struct fdisk_context *cxt, int num, sector_t start, sector_t stop, int sysid);
+
+extern void fill_bounds(sector_t *first, sector_t *last);
+extern unsigned int heads, cylinders;
+extern sector_t sectors;
+extern char *partition_type(unsigned char type);
+extern void update_units(struct fdisk_context *cxt);
+extern char read_chars(char *mesg);
+extern void set_changed(int);
+extern void set_all_unchanged(void);
+extern int warn_geometry(struct fdisk_context *cxt);
+extern void warn_limits(struct fdisk_context *cxt);
+extern void warn_alignment(struct fdisk_context *cxt);
+extern unsigned int read_int_with_suffix(struct fdisk_context *cxt,
+					 unsigned int low, unsigned int dflt, unsigned int high,
+				  unsigned int base, char *mesg, int *is_suffix_used);
+extern sector_t align_lba(struct fdisk_context *cxt, sector_t lba, int direction);
+extern int get_partition_dflt(struct fdisk_context *cxt, int warn, int max, int dflt);
+extern void update_sector_offset(struct fdisk_context *cxt);
+extern void get_partition_table_geometry(struct fdisk_context *cxt,
+					 unsigned int *ph, unsigned int *ps);
+
+#define PLURAL	0
+#define SINGULAR 1
+extern const char * str_units(int);
+
+extern sector_t get_nr_sects(struct partition *p);
+
+enum labeltype {
+	DOS_LABEL = 1,
+	SUN_LABEL = 2,
+	SGI_LABEL = 4,
+	AIX_LABEL = 8,
+	OSF_LABEL = 16,
+	MAC_LABEL = 32,
+	ANY_LABEL = -1
+};
+
+extern enum labeltype disklabel;
+extern int MBRbuffer_changed;
+extern unsigned long grain;
+
+/* start_sect and nr_sects are stored little endian on all machines */
+/* moreover, they are not aligned correctly */
+static inline void
+store4_little_endian(unsigned char *cp, unsigned int val) {
+	cp[0] = (val & 0xff);
+	cp[1] = ((val >> 8) & 0xff);
+	cp[2] = ((val >> 16) & 0xff);
+	cp[3] = ((val >> 24) & 0xff);
+}
+
+static inline unsigned int read4_little_endian(const unsigned char *cp)
+{
+	return (unsigned int)(cp[0]) + ((unsigned int)(cp[1]) << 8)
+		+ ((unsigned int)(cp[2]) << 16)
+		+ ((unsigned int)(cp[3]) << 24);
+}
+
+static inline void set_nr_sects(struct partition *p, sector_t nr_sects)
+{
+	store4_little_endian(p->size4, nr_sects);
+}
+
+static inline void set_start_sect(struct partition *p, unsigned int start_sect)
+{
+	store4_little_endian(p->start4, start_sect);
+}
+
+static inline void seek_sector(struct fdisk_context *cxt, sector_t secno)
+{
+	off_t offset = (off_t) secno * cxt->sector_size;
+	if (lseek(cxt->dev_fd, offset, SEEK_SET) == (off_t) -1)
+		fatal(cxt, unable_to_seek);
+}
+
+static inline void read_sector(struct fdisk_context *cxt, sector_t secno, unsigned char *buf)
+{
+	seek_sector(cxt, secno);
+	if (read(cxt->dev_fd, buf, cxt->sector_size) != (ssize_t) cxt->sector_size)
+		fatal(cxt, unable_to_read);
+}
+
+static inline void write_sector(struct fdisk_context *cxt, sector_t secno, unsigned char *buf)
+{
+	seek_sector(cxt, secno);
+	if (write(cxt->dev_fd, buf, cxt->sector_size) != (ssize_t) cxt->sector_size)
+		fatal(cxt, unable_to_write);
+}
+
+static inline sector_t get_start_sect(struct partition *p)
+{
+	return read4_little_endian(p->start4);
+}
+
+static inline int is_cleared_partition(struct partition *p)
+{
+	return !(!p || p->boot_ind || p->head || p->sector || p->cyl ||
+		 p->sys_ind || p->end_head || p->end_sector || p->end_cyl ||
+		 get_start_sect(p) || get_nr_sects(p));
+}