* Copyright (C) 1992 A. V. Le Blanc (LeBlanc@mcc.ac.uk)
* Copyright (C) 2001,2002 Vladimir Oleynik <dzo@simtreas.ru> (initial bb port)
*
- * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
+/* Looks like someone forgot to add this to config system */
+//usage:#ifndef ENABLE_FEATURE_FDISK_BLKSIZE
+//usage:# define ENABLE_FEATURE_FDISK_BLKSIZE 0
+//usage:# define IF_FEATURE_FDISK_BLKSIZE(a)
+//usage:#endif
+//usage:
+//usage:#define fdisk_trivial_usage
+//usage: "[-ul" IF_FEATURE_FDISK_BLKSIZE("s") "] "
+//usage: "[-C CYLINDERS] [-H HEADS] [-S SECTORS] [-b SSZ] DISK"
+//usage:#define fdisk_full_usage "\n\n"
+//usage: "Change partition table\n"
+//usage: "\n -u Start and End are in sectors (instead of cylinders)"
+//usage: "\n -l Show partition table for each DISK, then exit"
+//usage: IF_FEATURE_FDISK_BLKSIZE(
+//usage: "\n -s Show partition sizes in kb for each DISK, then exit"
+//usage: )
+//usage: "\n -b 2048 (for certain MO disks) use 2048-byte sectors"
+//usage: "\n -C CYLINDERS Set number of cylinders/heads/sectors"
+//usage: "\n -H HEADS"
+//usage: "\n -S SECTORS"
+
#ifndef _LARGEFILE64_SOURCE
/* For lseek64 */
-#define _LARGEFILE64_SOURCE
+# define _LARGEFILE64_SOURCE
#endif
#include <assert.h> /* assert */
+#include <sys/mount.h>
+#if !defined(BLKSSZGET)
+# define BLKSSZGET _IO(0x12, 104)
+#endif
+#if !defined(BLKGETSIZE64)
+# define BLKGETSIZE64 _IOR(0x12,114,size_t)
+#endif
#include "libbb.h"
+#if BB_LITTLE_ENDIAN
+# define inline_if_little_endian ALWAYS_INLINE
+#else
+# define inline_if_little_endian /* nothing */
+#endif
+
+
/* Looks like someone forgot to add this to config system */
#ifndef ENABLE_FEATURE_FDISK_BLKSIZE
# define ENABLE_FEATURE_FDISK_BLKSIZE 0
-# define USE_FEATURE_FDISK_BLKSIZE(a)
+# define IF_FEATURE_FDISK_BLKSIZE(a)
#endif
-#define SIZE(a) (sizeof(a)/sizeof((a)[0]))
-
-#define DEFAULT_SECTOR_SIZE 512
-#define MAX_SECTOR_SIZE 2048
-#define SECTOR_SIZE 512 /* still used in osf/sgi/sun code */
-#define MAXIMUM_PARTS 60
-
-#define ACTIVE_FLAG 0x80
+#define DEFAULT_SECTOR_SIZE 512
+#define DEFAULT_SECTOR_SIZE_STR "512"
+#define MAX_SECTOR_SIZE 2048
+#define SECTOR_SIZE 512 /* still used in osf/sgi/sun 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
+
+
+enum {
+ OPT_b = 1 << 0,
+ OPT_C = 1 << 1,
+ OPT_H = 1 << 2,
+ OPT_l = 1 << 3,
+ OPT_S = 1 << 4,
+ OPT_u = 1 << 5,
+ OPT_s = (1 << 6) * ENABLE_FEATURE_FDISK_BLKSIZE,
+};
-#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
-/* Used for sector numbers. Today's disk sizes make it necessary */
typedef unsigned long long ullong;
+/* Used for sector numbers. Partition formats we know
+ * do not support more than 2^32 sectors
+ */
+typedef uint32_t sector_t;
+#if UINT_MAX == 4294967295
+# define SECT_FMT ""
+#elif ULONG_MAX == 4294967295
+# define SECT_FMT "l"
+#else
+# error Cant detect sizeof(uint32_t)
+#endif
struct hd_geometry {
unsigned char heads;
#define HDIO_GETGEO 0x0301 /* get device geometry */
-static const char msg_building_new_label[] =
+static const char msg_building_new_label[] ALIGN1 =
"Building a new %s. Changes will remain in memory only,\n"
"until you decide to write them. After that the previous content\n"
"won't be recoverable.\n\n";
-static const char msg_part_already_defined[] =
-"Partition %d is already defined, delete it before re-adding\n";
-
-
-static unsigned sector_size = DEFAULT_SECTOR_SIZE;
-static unsigned user_set_sector_size;
-static unsigned sector_offset = 1;
-
-#if ENABLE_FEATURE_OSF_LABEL
-static int possibly_osf_label;
-#endif
-
-static unsigned heads, sectors, cylinders;
-static void update_units(void);
+static const char msg_part_already_defined[] ALIGN1 =
+"Partition %u is already defined, delete it before re-adding\n";
struct partition {
unsigned char head; /* starting head */
unsigned char sector; /* starting sector */
unsigned char cyl; /* starting cylinder */
- unsigned char sys_ind; /* What partition type */
+ 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;
+} PACKED;
+
+/*
+ * per partition table entry data
+ *
+ * The four primary partitions have the same sectorbuffer (MBRbuffer)
+ * and have NULL ext_pointer.
+ * Each logical partition table entry has two pointers, one for the
+ * partition and one link to the next one.
+ */
+struct pte {
+ struct partition *part_table; /* points into sectorbuffer */
+ struct partition *ext_pointer; /* points into sectorbuffer */
+ sector_t offset_from_dev_start; /* disk sector number */
+ char *sectorbuffer; /* disk sector contents */
+#if ENABLE_FEATURE_FDISK_WRITABLE
+ char changed; /* boolean */
+#endif
+};
-static const char unable_to_open[] = "cannot open %s";
-static const char unable_to_read[] = "cannot read from %s";
-static const char unable_to_seek[] = "cannot seek on %s";
-static const char unable_to_write[] = "cannot write to %s";
-static const char ioctl_error[] = "BLKGETSIZE ioctl failed on %s";
-static void fdisk_fatal(const char *why) ATTRIBUTE_NORETURN;
+#define unable_to_open "can't open '%s'"
+#define unable_to_read "can't read from %s"
+#define unable_to_seek "can't seek on %s"
enum label_type {
- label_dos, label_sun, label_sgi, label_aix, label_osf
+ LABEL_DOS, LABEL_SUN, LABEL_SGI, LABEL_AIX, LABEL_OSF, LABEL_GPT
};
-#define LABEL_IS_DOS (label_dos == current_label_type)
+#define LABEL_IS_DOS (LABEL_DOS == current_label_type)
#if ENABLE_FEATURE_SUN_LABEL
-#define LABEL_IS_SUN (label_sun == current_label_type)
+#define LABEL_IS_SUN (LABEL_SUN == current_label_type)
#define STATIC_SUN static
#else
#define LABEL_IS_SUN 0
#endif
#if ENABLE_FEATURE_SGI_LABEL
-#define LABEL_IS_SGI (label_sgi == current_label_type)
+#define LABEL_IS_SGI (LABEL_SGI == current_label_type)
#define STATIC_SGI static
#else
#define LABEL_IS_SGI 0
#endif
#if ENABLE_FEATURE_AIX_LABEL
-#define LABEL_IS_AIX (label_aix == current_label_type)
+#define LABEL_IS_AIX (LABEL_AIX == current_label_type)
#define STATIC_AIX static
#else
#define LABEL_IS_AIX 0
#endif
#if ENABLE_FEATURE_OSF_LABEL
-#define LABEL_IS_OSF (label_osf == current_label_type)
+#define LABEL_IS_OSF (LABEL_OSF == current_label_type)
#define STATIC_OSF static
#else
#define LABEL_IS_OSF 0
#define STATIC_OSF extern
#endif
-enum action { fdisk, require, try_only, create_empty_dos, create_empty_sun };
+#if ENABLE_FEATURE_GPT_LABEL
+#define LABEL_IS_GPT (LABEL_GPT == current_label_type)
+#define STATIC_GPT static
+#else
+#define LABEL_IS_GPT 0
+#define STATIC_GPT extern
+#endif
-static enum label_type current_label_type;
+enum action { OPEN_MAIN, TRY_ONLY, CREATE_EMPTY_DOS, CREATE_EMPTY_SUN };
-static const char *disk_device;
-static int fd; /* the disk */
-static int partitions = 4; /* maximum partition + 1 */
-static int display_in_cyl_units = 1;
-static unsigned units_per_sector = 1;
+static void update_units(void);
#if ENABLE_FEATURE_FDISK_WRITABLE
static void change_units(void);
static void reread_partition_table(int leave);
static void delete_partition(int i);
-static int get_partition(int warn, int max);
+static unsigned get_partition(int warn, unsigned max);
static void list_types(const char *const *sys);
-static unsigned read_int(unsigned low, unsigned dflt, unsigned high, unsigned base, const char *mesg);
+static sector_t read_int(sector_t low, sector_t dflt, sector_t high, sector_t base, const char *mesg);
#endif
static const char *partition_type(unsigned char type);
static void get_geometry(void);
+static void read_pte(struct pte *pe, sector_t offset);
+#if ENABLE_FEATURE_SUN_LABEL || ENABLE_FEATURE_FDISK_WRITABLE
static int get_boot(enum action what);
+#else
+static int get_boot(void);
+#endif
#define PLURAL 0
#define SINGULAR 1
-static unsigned get_start_sect(const struct partition *p);
-static unsigned get_nr_sects(const struct partition *p);
-
-/*
- * per partition table entry data
- *
- * The four primary partitions have the same sectorbuffer (MBRbuffer)
- * and have NULL ext_pointer.
- * Each logical partition table entry has two pointers, one for the
- * partition and one link to the next one.
- */
-struct pte {
- struct partition *part_table; /* points into sectorbuffer */
- struct partition *ext_pointer; /* points into sectorbuffer */
- ullong offset; /* disk sector number */
- char *sectorbuffer; /* disk sector contents */
-#if ENABLE_FEATURE_FDISK_WRITABLE
- char changed; /* boolean */
-#endif
-};
+static sector_t get_start_sect(const struct partition *p);
+static sector_t get_nr_sects(const struct partition *p);
/* DOS partition types */
NULL
};
+enum {
+ dev_fd = 3 /* the disk */
+};
/* Globals */
-
struct globals {
char *line_ptr;
+
+ const char *disk_device;
+ int g_partitions; // = 4; /* maximum partition + 1 */
+ unsigned units_per_sector; // = 1;
+ unsigned sector_size; // = DEFAULT_SECTOR_SIZE;
+ unsigned user_set_sector_size;
+ unsigned sector_offset; // = 1;
+ unsigned g_heads, g_sectors, g_cylinders;
+ smallint /* enum label_type */ current_label_type;
+ smallint display_in_cyl_units; // = 1;
+#if ENABLE_FEATURE_OSF_LABEL
+ smallint possibly_osf_label;
+#endif
+
+ smallint listing; /* no aborts for fdisk -l */
+ smallint dos_compatible_flag; // = 1;
+#if ENABLE_FEATURE_FDISK_WRITABLE
+ //int dos_changed;
+ smallint nowarn; /* no warnings for fdisk -l/-s */
+#endif
+ int ext_index; /* the prime extended partition */
+ unsigned user_cylinders, user_heads, user_sectors;
+ unsigned pt_heads, pt_sectors;
+ unsigned kern_heads, kern_sectors;
+ sector_t extended_offset; /* offset of link pointers */
+ sector_t total_number_of_sectors;
+
+ jmp_buf listingbuf;
char line_buffer[80];
char partname_buffer[80];
- jmp_buf listingbuf;
/* Raw disk label. For DOS-type partition tables the MBR,
* with descriptions of the primary partitions. */
char MBRbuffer[MAX_SECTOR_SIZE];
/* Partition tables */
struct pte ptes[MAXIMUM_PARTS];
};
-/* bb_common_bufsiz1 is too small for this on 64 bit CPUs */
#define G (*ptr_to_globals)
-
-#define line_ptr (G.line_ptr)
-#define listingbuf (G.listingbuf)
-#define line_buffer (G.line_buffer)
+#define line_ptr (G.line_ptr )
+#define disk_device (G.disk_device )
+#define g_partitions (G.g_partitions )
+#define units_per_sector (G.units_per_sector )
+#define sector_size (G.sector_size )
+#define user_set_sector_size (G.user_set_sector_size)
+#define sector_offset (G.sector_offset )
+#define g_heads (G.g_heads )
+#define g_sectors (G.g_sectors )
+#define g_cylinders (G.g_cylinders )
+#define current_label_type (G.current_label_type )
+#define display_in_cyl_units (G.display_in_cyl_units)
+#define possibly_osf_label (G.possibly_osf_label )
+#define listing (G.listing )
+#define dos_compatible_flag (G.dos_compatible_flag )
+#define nowarn (G.nowarn )
+#define ext_index (G.ext_index )
+#define user_cylinders (G.user_cylinders )
+#define user_heads (G.user_heads )
+#define user_sectors (G.user_sectors )
+#define pt_heads (G.pt_heads )
+#define pt_sectors (G.pt_sectors )
+#define kern_heads (G.kern_heads )
+#define kern_sectors (G.kern_sectors )
+#define extended_offset (G.extended_offset )
+#define total_number_of_sectors (G.total_number_of_sectors)
+#define listingbuf (G.listingbuf )
+#define line_buffer (G.line_buffer )
#define partname_buffer (G.partname_buffer)
-#define MBRbuffer (G.MBRbuffer)
-#define ptes (G.ptes)
+#define MBRbuffer (G.MBRbuffer )
+#define ptes (G.ptes )
+#define INIT_G() do { \
+ SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
+ sector_size = DEFAULT_SECTOR_SIZE; \
+ sector_offset = 1; \
+ g_partitions = 4; \
+ display_in_cyl_units = 1; \
+ units_per_sector = 1; \
+ dos_compatible_flag = 1; \
+} while (0)
+
+
+/* TODO: move to libbb? */
+/* TODO: return unsigned long long, FEATURE_FDISK_BLKSIZE _can_ handle
+ * disks > 2^32 sectors
+ */
+static sector_t bb_BLKGETSIZE_sectors(int fd)
+{
+ uint64_t v64;
+ unsigned long longsectors;
+ if (ioctl(fd, BLKGETSIZE64, &v64) == 0) {
+ /* Got bytes, convert to 512 byte sectors */
+ v64 >>= 9;
+ if (v64 != (sector_t)v64) {
+ ret_trunc:
+ /* Not only DOS, but all other partition tables
+ * we support can't record more than 32 bit
+ * sector counts or offsets
+ */
+ bb_error_msg("device has more than 2^32 sectors, can't use all of them");
+ v64 = (uint32_t)-1L;
+ }
+ return v64;
+ }
+ /* Needs temp of type long */
+ if (ioctl(fd, BLKGETSIZE, &longsectors)) {
+ /* Perhaps this is a disk image */
+ off_t sz = lseek(fd, 0, SEEK_END);
+ longsectors = 0;
+ if (sz > 0)
+ longsectors = (uoff_t)sz / sector_size;
+ lseek(fd, 0, SEEK_SET);
+ }
+ if (sizeof(long) > sizeof(sector_t)
+ && longsectors != (sector_t)longsectors
+ ) {
+ goto ret_trunc;
+ }
+ return longsectors;
+}
-/* Code */
#define IS_EXTENDED(i) \
((i) == EXTENDED || (i) == WIN98_EXTENDED || (i) == LINUX_EXTENDED)
#define hsc2sector(h,s,c) \
(sector(s) - 1 + sectors * ((h) + heads * cylinder(s,c)))
-#define set_hsc(h,s,c,sector) \
- do { \
- s = sector % sectors + 1; \
- sector /= sectors; \
- h = sector % heads; \
- sector /= heads; \
- c = sector & 0xff; \
- s |= (sector >> 2) & 0xc0; \
- } while (0)
-
-#if ENABLE_FEATURE_FDISK_WRITABLE
-/* read line; return 0 or first printable char */
-static int
-read_line(const char *prompt)
+static void
+close_dev_fd(void)
{
- int sz;
-
- sz = read_line_input(prompt, line_buffer, sizeof(line_buffer), NULL);
- if (sz <= 0)
- exit(0); /* Ctrl-D or Ctrl-C */
-
- if (line_buffer[sz-1] == '\n')
- line_buffer[--sz] = '\0';
-
- line_ptr = line_buffer;
- while (*line_ptr && !isgraph(*line_ptr))
- line_ptr++;
- return *line_ptr;
+ /* Not really closing, but making sure it is open, and to harmless place */
+ xmove_fd(xopen(bb_dev_null, O_RDONLY), dev_fd);
}
-#endif
/*
- * return partition name - uses static storage
+ * Return partition name - uses static storage
*/
static const char *
partname(const char *dev, int pno, int lth)
if (lth) {
snprintf(bufp, bufsiz, "%*.*s%s%-2u",
- lth-wp-2, w, dev, p, pno);
+ lth-wp-2, w, dev, p, pno);
} else {
snprintf(bufp, bufsiz, "%.*s%s%-2u", w, dev, p, pno);
}
return bufp;
}
-#if ENABLE_FEATURE_FDISK_WRITABLE
-static void
-set_all_unchanged(void)
-{
- int i;
-
- for (i = 0; i < MAXIMUM_PARTS; i++)
- ptes[i].changed = 0;
-}
-
-static ALWAYS_INLINE void
-set_changed(int i)
-{
- ptes[i].changed = 1;
-}
-#endif /* FEATURE_FDISK_WRITABLE */
-
static ALWAYS_INLINE struct partition *
get_part_table(int i)
{
return (mbuffer[510] == 0x55 && (uint8_t)mbuffer[511] == 0xaa);
}
+static void fdisk_fatal(const char *why)
+{
+ if (listing) {
+ close_dev_fd();
+ longjmp(listingbuf, 1);
+ }
+ bb_error_msg_and_die(why, disk_device);
+}
+
+static void
+seek_sector(sector_t secno)
+{
+#if ENABLE_FDISK_SUPPORT_LARGE_DISKS
+ off64_t off = (off64_t)secno * sector_size;
+ if (lseek64(dev_fd, off, SEEK_SET) == (off64_t) -1)
+ fdisk_fatal(unable_to_seek);
+#else
+ uint64_t off = (uint64_t)secno * sector_size;
+ if (off > MAXINT(off_t)
+ || lseek(dev_fd, (off_t)off, SEEK_SET) == (off_t) -1
+ ) {
+ fdisk_fatal(unable_to_seek);
+ }
+#endif
+}
+
#if ENABLE_FEATURE_FDISK_WRITABLE
+/* Read line; return 0 or first printable char */
+static int
+read_line(const char *prompt)
+{
+ int sz;
+
+ sz = read_line_input(NULL, prompt, line_buffer, sizeof(line_buffer), /*timeout*/ -1);
+ if (sz <= 0)
+ exit(EXIT_SUCCESS); /* Ctrl-D or Ctrl-C */
+
+ if (line_buffer[sz-1] == '\n')
+ line_buffer[--sz] = '\0';
+
+ line_ptr = line_buffer;
+ while (*line_ptr != '\0' && (unsigned char)*line_ptr <= ' ')
+ line_ptr++;
+ return *line_ptr;
+}
+
+static void
+set_all_unchanged(void)
+{
+ int i;
+
+ for (i = 0; i < MAXIMUM_PARTS; i++)
+ ptes[i].changed = 0;
+}
+
+static ALWAYS_INLINE void
+set_changed(int i)
+{
+ ptes[i].changed = 1;
+}
+
static ALWAYS_INLINE void
write_part_table_flag(char *b)
{
static char
read_nonempty(const char *mesg)
{
- while (!read_line(mesg)) /* repeat */;
+ while (!read_line(mesg))
+ continue;
return *line_ptr;
}
unsigned long v;
while (1) {
read_nonempty("Hex code (type L to list codes): ");
- if (*line_ptr == 'l' || *line_ptr == 'L') {
+ if ((line_ptr[0] | 0x20) == 'l') {
list_types(sys);
continue;
}
v = bb_strtoul(line_ptr, NULL, 16);
- if (v > 0xff)
- /* Bad input also triggers this */
- continue;
- return v;
+ if (v <= 0xff)
+ return v;
}
}
+
+static void
+write_sector(sector_t secno, const void *buf)
+{
+ seek_sector(secno);
+ xwrite(dev_fd, buf, sector_size);
+}
#endif /* FEATURE_FDISK_WRITABLE */
+
#include "fdisk_aix.c"
-typedef struct {
+struct sun_partition {
unsigned char info[128]; /* Informative text string */
unsigned char spare0[14];
struct sun_info {
} partitions[8];
unsigned short magic; /* Magic number */
unsigned short csum; /* Label xor'd checksum */
-} sun_partition;
+} FIX_ALIASING;
+typedef struct sun_partition sun_partition;
#define sunlabel ((sun_partition *)MBRbuffer)
STATIC_OSF void bsd_select(void);
STATIC_OSF void xbsd_print_disklabel(int);
#include "fdisk_osf.c"
+STATIC_GPT void gpt_list_table(int xtra);
+#include "fdisk_gpt.c"
+
#if ENABLE_FEATURE_SGI_LABEL || ENABLE_FEATURE_SUN_LABEL
static uint16_t
fdisk_swap16(uint16_t x)
STATIC_SUN void sun_write_table(void);
#include "fdisk_sun.c"
-#if ENABLE_FEATURE_FDISK_WRITABLE
-/* start_sect and nr_sects are stored little endian on all machines */
-/* moreover, they are not aligned correctly */
-static void
-store4_little_endian(unsigned char *cp, unsigned val)
-{
- cp[0] = val;
- cp[1] = val >> 8;
- cp[2] = val >> 16;
- cp[3] = val >> 24;
-}
-#endif /* FEATURE_FDISK_WRITABLE */
-static unsigned
+static inline_if_little_endian unsigned
read4_little_endian(const unsigned char *cp)
{
- return cp[0] + (cp[1] << 8) + (cp[2] << 16) + (cp[3] << 24);
+ uint32_t v;
+ move_from_unaligned32(v, cp);
+ return SWAP_LE32(v);
}
-#if ENABLE_FEATURE_FDISK_WRITABLE
-static void
-set_start_sect(struct partition *p, unsigned start_sect)
-{
- store4_little_endian(p->start4, start_sect);
-}
-#endif
-
-static unsigned
+static sector_t
get_start_sect(const struct partition *p)
{
return read4_little_endian(p->start4);
}
-#if ENABLE_FEATURE_FDISK_WRITABLE
-static void
-set_nr_sects(struct partition *p, unsigned nr_sects)
-{
- store4_little_endian(p->size4, nr_sects);
-}
-#endif
-
-static unsigned
+static sector_t
get_nr_sects(const struct partition *p)
{
return read4_little_endian(p->size4);
}
-/* normally O_RDWR, -l option gives O_RDONLY */
-static int type_open = O_RDWR;
-
-static int ext_index; /* the prime extended partition */
-static int listing; /* no aborts for fdisk -l */
-static int dos_compatible_flag = ~0;
#if ENABLE_FEATURE_FDISK_WRITABLE
-static int dos_changed;
-static int nowarn; /* no warnings for fdisk -l/-s */
-#endif
-
-static unsigned user_cylinders, user_heads, user_sectors;
-static unsigned pt_heads, pt_sectors;
-static unsigned kern_heads, kern_sectors;
-
-static ullong extended_offset; /* offset of link pointers */
-static ullong total_number_of_sectors;
-
-static void fdisk_fatal(const char *why)
+/* start_sect and nr_sects are stored little endian on all machines */
+/* moreover, they are not aligned correctly */
+static inline_if_little_endian void
+store4_little_endian(unsigned char *cp, unsigned val)
{
- if (listing) {
- close(fd);
- longjmp(listingbuf, 1);
- }
- bb_error_msg_and_die(why, disk_device);
+ uint32_t v = SWAP_LE32(val);
+ move_to_unaligned32(cp, v);
}
static void
-seek_sector(ullong secno)
+set_start_sect(struct partition *p, unsigned start_sect)
{
- secno *= sector_size;
- if (lseek64(fd, (off64_t)secno, SEEK_SET) == (off64_t) -1)
- fdisk_fatal(unable_to_seek);
+ store4_little_endian(p->start4, start_sect);
}
-#if ENABLE_FEATURE_FDISK_WRITABLE
static void
-write_sector(ullong secno, char *buf)
+set_nr_sects(struct partition *p, unsigned nr_sects)
{
- seek_sector(secno);
- if (write(fd, buf, sector_size) != sector_size)
- fdisk_fatal(unable_to_write);
+ store4_little_endian(p->size4, nr_sects);
}
#endif
/* Allocate a buffer and read a partition table sector */
static void
-read_pte(struct pte *pe, ullong offset)
+read_pte(struct pte *pe, sector_t offset)
{
- pe->offset = offset;
- pe->sectorbuffer = xmalloc(sector_size);
+ pe->offset_from_dev_start = offset;
+ pe->sectorbuffer = xzalloc(sector_size);
seek_sector(offset);
- if (read(fd, pe->sectorbuffer, sector_size) != sector_size)
+ /* xread would make us abort - bad for fdisk -l */
+ if (full_read(dev_fd, pe->sectorbuffer, sector_size) != sector_size)
fdisk_fatal(unable_to_read);
#if ENABLE_FEATURE_FDISK_WRITABLE
pe->changed = 0;
pe->part_table = pe->ext_pointer = NULL;
}
-static unsigned
-get_partition_start(const struct pte *pe)
+static sector_t
+get_partition_start_from_dev_start(const struct pte *pe)
{
- return pe->offset + get_start_sect(pe->part_table);
+ return pe->offset_from_dev_start + get_start_sect(pe->part_table);
}
#if ENABLE_FEATURE_FDISK_WRITABLE
* We might also do the opposite and warn in all cases except
* for "is probably nondos partition".
*/
+#ifdef UNUSED
static int
is_dos_partition(int t)
{
t == 0x1b || t == 0x1c || t == 0x1e || t == 0x24 ||
t == 0xc1 || t == 0xc4 || t == 0xc6);
}
+#endif
static void
menu(void)
puts("o\tcreate a new empty DOS partition table");
puts("q\tquit without saving changes");
puts("s\tcreate a new empty Sun disklabel"); /* sun */
+ } else if (LABEL_IS_GPT) {
+ puts("o\tcreate a new empty DOS partition table");
+ puts("p\tprint the partition table");
+ puts("q\tquit without saving changes");
+ puts("s\tcreate a new empty Sun disklabel"); /* sun */
} else {
puts("a\ttoggle a bootable flag");
puts("b\tedit bsd disklabel");
}
#else
#define get_sys_types() i386_sys_types
-#endif /* FEATURE_FDISK_WRITABLE */
+#endif
static const char *
partition_type(unsigned char type)
return "Unknown";
}
+static int
+is_cleared_partition(const struct partition *p)
+{
+ /* We consider partition "cleared" only if it has only zeros */
+ const char *cp = (const char *)p;
+ int cnt = sizeof(*p);
+ char bits = 0;
+ while (--cnt >= 0)
+ bits |= *cp++;
+ return (bits == 0);
+}
+
+static void
+clear_partition(struct partition *p)
+{
+ if (p)
+ memset(p, 0, sizeof(*p));
+}
#if ENABLE_FEATURE_FDISK_WRITABLE
static int
unsigned done, next, size;
int i;
- for (size = 0; sys[size]; size++) /* */;
+ for (size = 0; sys[size]; size++)
+ continue;
done = 0;
for (i = COLS-1; i >= 0; i--) {
next = ++done;
}
} while (done < last[0]);
- putchar('\n');
+ bb_putchar('\n');
}
-#endif /* FEATURE_FDISK_WRITABLE */
-static int
-is_cleared_partition(const 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));
-}
+#define set_hsc(h, s, c, sector) do \
+{ \
+ s = sector % g_sectors + 1; \
+ sector /= g_sectors; \
+ h = sector % g_heads; \
+ sector /= g_heads; \
+ c = sector & 0xff; \
+ s |= (sector >> 2) & 0xc0; \
+} while (0)
-static void
-clear_partition(struct partition *p)
+static void set_hsc_start_end(struct partition *p, sector_t start, sector_t stop)
{
- if (!p)
- return;
- memset(p, 0, sizeof(struct partition));
+ if (dos_compatible_flag && (start / (g_sectors * g_heads) > 1023))
+ start = g_heads * g_sectors * 1024 - 1;
+ set_hsc(p->head, p->sector, p->cyl, start);
+
+ if (dos_compatible_flag && (stop / (g_sectors * g_heads) > 1023))
+ stop = g_heads * g_sectors * 1024 - 1;
+ set_hsc(p->end_head, p->end_sector, p->end_cyl, stop);
}
-#if ENABLE_FEATURE_FDISK_WRITABLE
static void
-set_partition(int i, int doext, ullong start, ullong stop, int sysid)
+set_partition(int i, int doext, sector_t start, sector_t stop, int sysid)
{
struct partition *p;
- ullong offset;
+ sector_t offset;
if (doext) {
p = ptes[i].ext_pointer;
offset = extended_offset;
} else {
p = ptes[i].part_table;
- offset = ptes[i].offset;
+ offset = ptes[i].offset_from_dev_start;
}
p->boot_ind = 0;
p->sys_ind = sysid;
set_start_sect(p, start - offset);
set_nr_sects(p, stop - start + 1);
- if (dos_compatible_flag && (start/(sectors*heads) > 1023))
- start = heads*sectors*1024 - 1;
- set_hsc(p->head, p->sector, p->cyl, start);
- if (dos_compatible_flag && (stop/(sectors*heads) > 1023))
- stop = heads*sectors*1024 - 1;
- set_hsc(p->end_head, p->end_sector, p->end_cyl, stop);
+ set_hsc_start_end(p, start, stop);
ptes[i].changed = 1;
}
#endif
static int
warn_geometry(void)
{
- if (heads && sectors && cylinders)
+ if (g_heads && g_sectors && g_cylinders)
return 0;
printf("Unknown value(s) for:");
- if (!heads)
+ if (!g_heads)
printf(" heads");
- if (!sectors)
+ if (!g_sectors)
printf(" sectors");
- if (!cylinders)
+ if (!g_cylinders)
printf(" cylinders");
printf(
#if ENABLE_FEATURE_FDISK_WRITABLE
static void
update_units(void)
{
- int cyl_units = heads * sectors;
+ int cyl_units = g_heads * g_sectors;
if (display_in_cyl_units && cyl_units)
units_per_sector = cyl_units;
static void
warn_cylinders(void)
{
- if (LABEL_IS_DOS && cylinders > 1024 && !nowarn)
+ if (LABEL_IS_DOS && g_cylinders > 1024 && !nowarn)
printf("\n"
-"The number of cylinders for this disk is set to %d.\n"
+"The number of cylinders for this disk is set to %u.\n"
"There is nothing wrong with that, but this is larger than 1024,\n"
"and could in certain setups cause problems with:\n"
"1) software that runs at boot time (e.g., old versions of LILO)\n"
"2) booting and partitioning software from other OSs\n"
" (e.g., DOS FDISK, OS/2 FDISK)\n",
- cylinders);
+ g_cylinders);
}
#endif
}
while (IS_EXTENDED(p->sys_ind)) {
- struct pte *pe = &ptes[partitions];
+ struct pte *pe = &ptes[g_partitions];
- if (partitions >= MAXIMUM_PARTS) {
+ if (g_partitions >= MAXIMUM_PARTS) {
/* This is not a Linux restriction, but
this program uses arrays of size MAXIMUM_PARTS.
Do not try to 'improve' this test. */
- struct pte *pre = &ptes[partitions-1];
+ struct pte *pre = &ptes[g_partitions - 1];
#if ENABLE_FEATURE_FDISK_WRITABLE
- printf("Warning: deleting partitions after %d\n",
- partitions);
+ printf("Warning: deleting partitions after %u\n",
+ g_partitions);
pre->changed = 1;
#endif
clear_partition(pre->ext_pointer);
if (pe->ext_pointer)
printf("Warning: extra link "
"pointer in partition table"
- " %d\n", partitions + 1);
+ " %u\n", g_partitions + 1);
else
pe->ext_pointer = p;
} else if (p->sys_ind) {
if (pe->part_table)
printf("Warning: ignoring extra "
"data in partition table"
- " %d\n", partitions + 1);
+ " %u\n", g_partitions + 1);
else
pe->part_table = p;
}
}
p = pe->ext_pointer;
- partitions++;
+ g_partitions++;
}
#if ENABLE_FEATURE_FDISK_WRITABLE
/* remove empty links */
remove:
- for (i = 4; i < partitions; i++) {
+ for (i = 4; i < g_partitions; i++) {
struct pte *pe = &ptes[i];
if (!get_nr_sects(pe->part_table)
- && (partitions > 5 || ptes[4].part_table->sys_ind)
+ && (g_partitions > 5 || ptes[4].part_table->sys_ind)
) {
- printf("Omitting empty partition (%d)\n", i+1);
+ printf("Omitting empty partition (%u)\n", i+1);
delete_partition(i);
goto remove; /* numbering changed */
}
static void
create_doslabel(void)
{
- int i;
-
printf(msg_building_new_label, "DOS disklabel");
- current_label_type = label_dos;
-
+ current_label_type = LABEL_DOS;
#if ENABLE_FEATURE_OSF_LABEL
possibly_osf_label = 0;
#endif
- partitions = 4;
+ g_partitions = 4;
- for (i = 510-64; i < 510; i++)
- MBRbuffer[i] = 0;
+ memset(&MBRbuffer[510 - 4*16], 0, 4*16);
write_part_table_flag(MBRbuffer);
extended_offset = 0;
set_all_unchanged();
set_changed(0);
- get_boot(create_empty_dos);
+ get_boot(CREATE_EMPTY_DOS);
}
-#endif /* FEATURE_FDISK_WRITABLE */
+#endif
static void
get_sectorsize(void)
{
if (!user_set_sector_size) {
int arg;
- if (ioctl(fd, BLKSSZGET, &arg) == 0)
+ if (ioctl(dev_fd, BLKSSZGET, &arg) == 0)
sector_size = arg;
if (sector_size != DEFAULT_SECTOR_SIZE)
- printf("Note: sector size is %d (not %d)\n",
- sector_size, DEFAULT_SECTOR_SIZE);
+ printf("Note: sector size is %u "
+ "(not " DEFAULT_SECTOR_SIZE_STR ")\n",
+ sector_size);
}
}
{
struct hd_geometry geometry;
- if (!ioctl(fd, HDIO_GETGEO, &geometry)) {
+ if (!ioctl(dev_fd, HDIO_GETGEO, &geometry)) {
kern_heads = geometry.heads;
kern_sectors = geometry.sectors;
/* never use geometry.cylinders - it is truncated */
get_geometry(void)
{
int sec_fac;
- uint64_t v64;
get_sectorsize();
sec_fac = sector_size / 512;
#if ENABLE_FEATURE_SUN_LABEL
guess_device_type();
#endif
- heads = cylinders = sectors = 0;
+ g_heads = g_cylinders = g_sectors = 0;
kern_heads = kern_sectors = 0;
pt_heads = pt_sectors = 0;
get_kernel_geometry();
get_partition_table_geometry();
- heads = user_heads ? user_heads :
+ g_heads = user_heads ? user_heads :
pt_heads ? pt_heads :
kern_heads ? kern_heads : 255;
- sectors = user_sectors ? user_sectors :
+ g_sectors = user_sectors ? user_sectors :
pt_sectors ? pt_sectors :
kern_sectors ? kern_sectors : 63;
- if (ioctl(fd, BLKGETSIZE64, &v64) == 0) {
- /* got bytes, convert to 512 byte sectors */
- total_number_of_sectors = (v64 >> 9);
- } else {
- unsigned long longsectors; /* need temp of type long */
- if (ioctl(fd, BLKGETSIZE, &longsectors))
- longsectors = 0;
- total_number_of_sectors = longsectors;
- }
+ total_number_of_sectors = bb_BLKGETSIZE_sectors(dev_fd);
sector_offset = 1;
if (dos_compatible_flag)
- sector_offset = sectors;
+ sector_offset = g_sectors;
- cylinders = total_number_of_sectors / (heads * sectors * sec_fac);
- if (!cylinders)
- cylinders = user_cylinders;
+ g_cylinders = total_number_of_sectors / (g_heads * g_sectors * sec_fac);
+ if (!g_cylinders)
+ g_cylinders = user_cylinders;
}
/*
- * Read MBR. Returns:
+ * Opens disk_device and optionally reads MBR.
+ * If what == OPEN_MAIN:
+ * Open device, read MBR. Abort program on short read. Create empty
+ * disklabel if the on-disk structure is invalid (WRITABLE mode).
+ * If what == TRY_ONLY:
+ * Open device, read MBR. Return an error if anything is out of place.
+ * Do not create an empty disklabel. This is used for the "list"
+ * operations: "fdisk -l /dev/sda" and "fdisk -l" (all devices).
+ * If what == CREATE_EMPTY_*:
+ * This means that get_boot() was called recursively from create_*label().
+ * Do not re-open the device; just set up the ptes array and print
+ * geometry warnings.
+ *
+ * Returns:
* -1: no 0xaa55 flag present (possibly entire disk BSD)
* 0: found or created label
* 1: I/O error
*/
-static int
-get_boot(enum action what)
+#if ENABLE_FEATURE_SUN_LABEL || ENABLE_FEATURE_FDISK_WRITABLE
+static int get_boot(enum action what)
+#else
+static int get_boot(void)
+#define get_boot(what) get_boot()
+#endif
{
- int i;
-
- partitions = 4;
+ int i, fd;
+ g_partitions = 4;
for (i = 0; i < 4; i++) {
struct pte *pe = &ptes[i];
-
pe->part_table = pt_offset(MBRbuffer, i);
pe->ext_pointer = NULL;
- pe->offset = 0;
+ pe->offset_from_dev_start = 0;
pe->sectorbuffer = MBRbuffer;
#if ENABLE_FEATURE_FDISK_WRITABLE
- pe->changed = (what == create_empty_dos);
+ pe->changed = (what == CREATE_EMPTY_DOS);
#endif
}
-#if ENABLE_FEATURE_SUN_LABEL
- if (what == create_empty_sun && check_sun_label())
- return 0;
-#endif
-
- memset(MBRbuffer, 0, 512);
-
#if ENABLE_FEATURE_FDISK_WRITABLE
- if (what == create_empty_dos)
- goto got_dos_table; /* skip reading disk */
+// ALERT! highly idiotic design!
+// We end up here when we call get_boot() recursively
+// via get_boot() [table is bad] -> create_doslabel() -> get_boot(CREATE_EMPTY_DOS).
+// or get_boot() [table is bad] -> create_sunlabel() -> get_boot(CREATE_EMPTY_SUN).
+// (just factor out re-init of ptes[0,1,2,3] in a separate fn instead?)
+// So skip opening device _again_...
+ if (what == CREATE_EMPTY_DOS IF_FEATURE_SUN_LABEL(|| what == CREATE_EMPTY_SUN))
+ goto created_table;
+
+ fd = open(disk_device, (option_mask32 & OPT_l) ? O_RDONLY : O_RDWR);
- fd = open(disk_device, type_open);
if (fd < 0) {
fd = open(disk_device, O_RDONLY);
if (fd < 0) {
- if (what == try_only)
+ if (what == TRY_ONLY)
return 1;
fdisk_fatal(unable_to_open);
- } else
- printf("You will not be able to write "
- "the partition table\n");
+ }
+ printf("'%s' is opened for read only\n", disk_device);
}
-
- if (512 != read(fd, MBRbuffer, 512)) {
- if (what == try_only)
+ xmove_fd(fd, dev_fd);
+ if (512 != full_read(dev_fd, MBRbuffer, 512)) {
+ if (what == TRY_ONLY) {
+ close_dev_fd();
return 1;
+ }
fdisk_fatal(unable_to_read);
}
#else
fd = open(disk_device, O_RDONLY);
if (fd < 0)
return 1;
- if (512 != read(fd, MBRbuffer, 512))
+ if (512 != full_read(fd, MBRbuffer, 512)) {
+ close(fd);
return 1;
+ }
+ xmove_fd(fd, dev_fd);
#endif
get_geometry();
-
update_units();
#if ENABLE_FEATURE_SUN_LABEL
if (check_sun_label())
return 0;
#endif
-
#if ENABLE_FEATURE_SGI_LABEL
if (check_sgi_label())
return 0;
#endif
-
#if ENABLE_FEATURE_AIX_LABEL
if (check_aix_label())
return 0;
#endif
-
+#if ENABLE_FEATURE_GPT_LABEL
+ if (check_gpt_label())
+ return 0;
+#endif
#if ENABLE_FEATURE_OSF_LABEL
if (check_osf_label()) {
possibly_osf_label = 1;
if (!valid_part_table_flag(MBRbuffer)) {
- current_label_type = label_osf;
+ current_label_type = LABEL_OSF;
return 0;
}
printf("This disk has both DOS and BSD magic.\n"
}
#endif
-#if ENABLE_FEATURE_FDISK_WRITABLE
- got_dos_table:
-#endif
-
- if (!valid_part_table_flag(MBRbuffer)) {
#if !ENABLE_FEATURE_FDISK_WRITABLE
+ if (!valid_part_table_flag(MBRbuffer))
return -1;
#else
- switch (what) {
- case fdisk:
+ if (!valid_part_table_flag(MBRbuffer)) {
+ if (what == OPEN_MAIN) {
printf("Device contains neither a valid DOS "
- "partition table, nor Sun, SGI or OSF "
+ "partition table, nor Sun, SGI, OSF or GPT "
"disklabel\n");
#ifdef __sparc__
-#if ENABLE_FEATURE_SUN_LABEL
- create_sunlabel();
-#endif
+ IF_FEATURE_SUN_LABEL(create_sunlabel();)
#else
create_doslabel();
#endif
return 0;
- case try_only:
- return -1;
- case create_empty_dos:
-#if ENABLE_FEATURE_SUN_LABEL
- case create_empty_sun:
-#endif
- break;
- default:
- bb_error_msg_and_die("internal error");
}
-#endif /* FEATURE_FDISK_WRITABLE */
+ /* TRY_ONLY: */
+ return -1;
}
+ created_table:
+#endif /* FEATURE_FDISK_WRITABLE */
-#if ENABLE_FEATURE_FDISK_WRITABLE
- warn_cylinders();
-#endif
+
+ IF_FEATURE_FDISK_WRITABLE(warn_cylinders();)
warn_geometry();
for (i = 0; i < 4; i++) {
- struct pte *pe = &ptes[i];
-
- if (IS_EXTENDED(pe->part_table->sys_ind)) {
- if (partitions != 4)
+ if (IS_EXTENDED(ptes[i].part_table->sys_ind)) {
+ if (g_partitions != 4)
printf("Ignoring extra extended "
- "partition %d\n", i + 1);
+ "partition %u\n", i + 1);
else
read_extended(i);
}
}
- for (i = 3; i < partitions; i++) {
+ for (i = 3; i < g_partitions; i++) {
struct pte *pe = &ptes[i];
-
if (!valid_part_table_flag(pe->sectorbuffer)) {
printf("Warning: invalid flag 0x%02x,0x%02x of partition "
- "table %d will be corrected by w(rite)\n",
+ "table %u will be corrected by w(rite)\n",
pe->sectorbuffer[510],
pe->sectorbuffer[511],
i + 1);
-#if ENABLE_FEATURE_FDISK_WRITABLE
- pe->changed = 1;
-#endif
+ IF_FEATURE_FDISK_WRITABLE(pe->changed = 1;)
}
}
*
* There is no default if DFLT is not between LOW and HIGH.
*/
-static unsigned
-read_int(unsigned low, unsigned dflt, unsigned high, unsigned base, const char *mesg)
+static sector_t
+read_int(sector_t low, sector_t dflt, sector_t high, sector_t base, const char *mesg)
{
- unsigned i;
+ sector_t value;
int default_ok = 1;
const char *fmt = "%s (%u-%u, default %u): ";
int minus = (*line_ptr == '-');
int absolute = 0;
- i = atoi(line_ptr + 1);
+ value = atoi(line_ptr + 1);
+ /* (1) if 2nd char is digit, use_default = 0.
+ * (2) move line_ptr to first non-digit. */
while (isdigit(*++line_ptr))
use_default = 0;
case 'c':
case 'C':
if (!display_in_cyl_units)
- i *= heads * sectors;
+ value *= g_heads * g_sectors;
break;
case 'K':
absolute = 1024;
ullong bytes;
unsigned long unit;
- bytes = (ullong) i * absolute;
+ bytes = (ullong) value * absolute;
unit = sector_size * units_per_sector;
bytes += unit/2; /* round */
bytes /= unit;
- i = bytes;
+ value = bytes;
}
if (minus)
- i = -i;
- i += base;
+ value = -value;
+ value += base;
} else {
- i = atoi(line_ptr);
+ value = atoi(line_ptr);
while (isdigit(*line_ptr)) {
line_ptr++;
use_default = 0;
}
}
if (use_default) {
- i = dflt;
- printf("Using default value %u\n", i);
+ value = dflt;
+ printf("Using default value %u\n", value);
}
- if (i >= low && i <= high)
+ if (value >= low && value <= high)
break;
printf("Value is out of range\n");
}
- return i;
+ return value;
}
-static int
-get_partition(int warn, int max)
+static unsigned
+get_partition(int warn, unsigned max)
{
struct pte *pe;
- int i;
+ unsigned i;
i = read_int(1, 0, max, 0, "Partition number") - 1;
pe = &ptes[i];
|| (LABEL_IS_SUN && (!sunlabel->partitions[i].num_sectors || !sunlabel->infos[i].id))
|| (LABEL_IS_SGI && !sgi_get_num_sectors(i))
) {
- printf("Warning: partition %d has empty type\n", i+1);
+ printf("Warning: partition %u has empty type\n", i+1);
}
}
return i;
}
static int
-get_existing_partition(int warn, int max)
+get_existing_partition(int warn, unsigned max)
{
int pno = -1;
- int i;
+ unsigned i;
for (i = 0; i < max; i++) {
struct pte *pe = &ptes[i];
}
}
if (pno >= 0) {
- printf("Selected partition %d\n", pno+1);
+ printf("Selected partition %u\n", pno+1);
return pno;
}
printf("No partition is defined yet!\n");
}
static int
-get_nonexisting_partition(int warn, int max)
+get_nonexisting_partition(int warn, unsigned max)
{
int pno = -1;
- int i;
+ unsigned i;
for (i = 0; i < max; i++) {
struct pte *pe = &ptes[i];
}
}
if (pno >= 0) {
- printf("Selected partition %d\n", pno+1);
+ printf("Selected partition %u\n", pno+1);
return pno;
}
printf("All primary partitions have been defined already!\n");
struct partition *p = pe->part_table;
if (IS_EXTENDED(p->sys_ind) && !p->boot_ind)
- printf("WARNING: Partition %d is an extended partition\n", i + 1);
+ printf("WARNING: Partition %u is an extended partition\n", i + 1);
p->boot_ind = (p->boot_ind ? 0 : ACTIVE_FLAG);
pe->changed = 1;
}
static void
toggle_dos_compatibility_flag(void)
{
- dos_compatible_flag = ~dos_compatible_flag;
+ dos_compatible_flag = 1 - dos_compatible_flag;
if (dos_compatible_flag) {
- sector_offset = sectors;
+ sector_offset = g_sectors;
printf("DOS Compatibility flag is set\n");
} else {
sector_offset = 1;
if (i < 4) {
if (IS_EXTENDED(p->sys_ind) && i == ext_index) {
- partitions = 4;
+ g_partitions = 4;
ptes[ext_index].ext_pointer = NULL;
extended_offset = 0;
}
if (!q->sys_ind && i > 4) {
/* the last one in the chain - just delete */
- --partitions;
+ --g_partitions;
--i;
clear_partition(ptes[i].ext_pointer);
ptes[i].changed = 1;
set_start_sect(p, get_start_sect(q));
set_nr_sects(p, get_nr_sects(q));
ptes[i-1].changed = 1;
- } else if (partitions > 5) { /* 5 will be moved to 4 */
+ } else if (g_partitions > 5) { /* 5 will be moved to 4 */
/* the first logical in a longer chain */
pe = &ptes[5];
if (pe->part_table) /* prevent SEGFAULT */
set_start_sect(pe->part_table,
- get_partition_start(pe) -
- extended_offset);
- pe->offset = extended_offset;
+ get_partition_start_from_dev_start(pe) -
+ extended_offset);
+ pe->offset_from_dev_start = extended_offset;
pe->changed = 1;
}
- if (partitions > 5) {
- partitions--;
- while (i < partitions) {
+ if (g_partitions > 5) {
+ g_partitions--;
+ while (i < g_partitions) {
ptes[i] = ptes[i+1];
i++;
}
- } else
+ } else {
/* the only logical: clear only */
clear_partition(ptes[i].part_table);
+ }
}
}
let the user select a partition, since get_existing_partition()
only works for Linux like partition tables. */
if (!LABEL_IS_SGI) {
- i = get_existing_partition(0, partitions);
+ i = get_existing_partition(0, g_partitions);
} else {
- i = get_partition(0, partitions);
+ i = get_partition(0, g_partitions);
}
if (i == -1)
return;
/* if changing types T to 0 is allowed, then
the reverse change must be allowed, too */
if (!sys && !LABEL_IS_SGI && !LABEL_IS_SUN && !get_nr_sects(p)) {
- printf("Partition %d does not exist yet!\n", i + 1);
+ printf("Partition %u does not exist yet!\n", i + 1);
return;
}
while (1) {
} else
p->sys_ind = sys;
- printf("Changed system type of partition %d "
+ printf("Changed system type of partition %u "
"to %x (%s)\n", i + 1, sys,
partition_type(sys));
ptes[i].changed = 1;
- if (is_dos_partition(origsys) ||
- is_dos_partition(sys))
- dos_changed = 1;
+ //if (is_dos_partition(origsys) || is_dos_partition(sys))
+ // dos_changed = 1;
break;
}
}
static void
linear2chs(unsigned ls, unsigned *c, unsigned *h, unsigned *s)
{
- int spc = heads * sectors;
+ int spc = g_heads * g_sectors;
*c = ls / spc;
ls = ls % spc;
- *h = ls / sectors;
- *s = ls % sectors + 1; /* sectors count from 1 */
+ *h = ls / g_sectors;
+ *s = ls % g_sectors + 1; /* sectors count from 1 */
}
static void
unsigned lbc, lbh, lbs; /* logical beginning c, h, s */
unsigned lec, leh, les; /* logical ending c, h, s */
- if (!heads || !sectors || (partition >= 4))
+ if (!g_heads || !g_sectors || (partition >= 4))
return; /* do not check extended partitions */
/* physical beginning c, h, s */
linear2chs(get_start_sect(p) + get_nr_sects(p) - 1, &lec, &leh, &les);
/* Same physical / logical beginning? */
- if (cylinders <= 1024 && (pbc != lbc || pbh != lbh || pbs != lbs)) {
- printf("Partition %d has different physical/logical "
+ if (g_cylinders <= 1024 && (pbc != lbc || pbh != lbh || pbs != lbs)) {
+ printf("Partition %u has different physical/logical "
"beginnings (non-Linux?):\n", partition + 1);
- printf(" phys=(%d, %d, %d) ", pbc, pbh, pbs);
- printf("logical=(%d, %d, %d)\n",lbc, lbh, lbs);
+ printf(" phys=(%u, %u, %u) ", pbc, pbh, pbs);
+ printf("logical=(%u, %u, %u)\n", lbc, lbh, lbs);
}
/* Same physical / logical ending? */
- if (cylinders <= 1024 && (pec != lec || peh != leh || pes != les)) {
- printf("Partition %d has different physical/logical "
+ if (g_cylinders <= 1024 && (pec != lec || peh != leh || pes != les)) {
+ printf("Partition %u has different physical/logical "
"endings:\n", partition + 1);
- printf(" phys=(%d, %d, %d) ", pec, peh, pes);
- printf("logical=(%d, %d, %d)\n", lec, leh, les);
+ printf(" phys=(%u, %u, %u) ", pec, peh, pes);
+ printf("logical=(%u, %u, %u)\n", lec, leh, les);
}
/* Ending on cylinder boundary? */
- if (peh != (heads - 1) || pes != sectors) {
- printf("Partition %i does not end on cylinder boundary\n",
+ if (peh != (g_heads - 1) || pes != g_sectors) {
+ printf("Partition %u does not end on cylinder boundary\n",
partition + 1);
}
}
static void
list_disk_geometry(void)
{
- long long bytes = (total_number_of_sectors << 9);
- long megabytes = bytes/1000000;
+ ullong bytes = ((ullong)total_number_of_sectors << 9);
+ long megabytes = bytes / 1000000;
if (megabytes < 10000)
- printf("\nDisk %s: %ld MB, %lld bytes\n",
- disk_device, megabytes, bytes);
+ printf("\nDisk %s: %lu MB, %llu bytes\n",
+ disk_device, megabytes, bytes);
else
- printf("\nDisk %s: %ld.%ld GB, %lld bytes\n",
- disk_device, megabytes/1000, (megabytes/100)%10, bytes);
- printf("%d heads, %d sectors/track, %d cylinders",
- heads, sectors, cylinders);
+ printf("\nDisk %s: %lu.%lu GB, %llu bytes\n",
+ disk_device, megabytes/1000, (megabytes/100)%10, bytes);
+ printf("%u heads, %u sectors/track, %u cylinders",
+ g_heads, g_sectors, g_cylinders);
if (units_per_sector == 1)
- printf(", total %llu sectors",
- total_number_of_sectors / (sector_size/512));
- printf("\nUnits = %s of %d * %d = %d bytes\n\n",
- str_units(PLURAL),
- units_per_sector, sector_size, units_per_sector * sector_size);
+ printf(", total %"SECT_FMT"u sectors",
+ total_number_of_sectors / (sector_size/512));
+ printf("\nUnits = %s of %u * %u = %u bytes\n\n",
+ str_units(PLURAL),
+ units_per_sector, sector_size, units_per_sector * sector_size);
}
/*
{
const struct pte *pe;
const struct partition *p;
- ullong last_p_start_pos = 0, p_start_pos;
- int i, last_i = 0;
+ sector_t last_p_start_pos = 0, p_start_pos;
+ unsigned i, last_i = 0;
- for (i = 0 ; i < partitions; i++) {
+ for (i = 0; i < g_partitions; i++) {
if (i == 4) {
last_i = 4;
last_p_start_pos = 0;
}
pe = &ptes[i];
- if ((p = pe->part_table)->sys_ind) {
- p_start_pos = get_partition_start(pe);
+ p = pe->part_table;
+ if (p->sys_ind) {
+ p_start_pos = get_partition_start_from_dev_start(pe);
if (last_p_start_pos > p_start_pos) {
if (prev)
/* Stage 1: sort sectors but leave sector of part 4 */
/* (Its sector is the global extended_offset.) */
stage1:
- for (j = 5; j < partitions-1; j++) {
- oj = ptes[j].offset;
- ojj = ptes[j+1].offset;
+ for (j = 5; j < g_partitions - 1; j++) {
+ oj = ptes[j].offset_from_dev_start;
+ ojj = ptes[j+1].offset_from_dev_start;
if (oj > ojj) {
- ptes[j].offset = ojj;
- ptes[j+1].offset = oj;
+ ptes[j].offset_from_dev_start = ojj;
+ ptes[j+1].offset_from_dev_start = oj;
pj = ptes[j].part_table;
set_start_sect(pj, get_start_sect(pj)+oj-ojj);
pjj = ptes[j+1].part_table;
/* Stage 2: sort starting sectors */
stage2:
- for (j = 4; j < partitions-1; j++) {
+ for (j = 4; j < g_partitions - 1; j++) {
pj = ptes[j].part_table;
pjj = ptes[j+1].part_table;
sj = get_start_sect(pj);
sjj = get_start_sect(pjj);
- oj = ptes[j].offset;
- ojj = ptes[j+1].offset;
+ oj = ptes[j].offset_from_dev_start;
+ ojj = ptes[j+1].offset_from_dev_start;
if (oj+sj > ojj+sjj) {
tmp = *pj;
*pj = *pjj;
}
/* Probably something was changed */
- for (j = 4; j < partitions; j++)
+ for (j = 4; j < g_partitions; j++)
ptes[j].changed = 1;
}
fix_chain_of_logicals();
printf("Done.\n");
-
}
#endif
sun_list_table(xtra);
return;
}
- if (LABEL_IS_SUN) {
+ if (LABEL_IS_SGI) {
sgi_list_table(xtra);
return;
}
+ if (LABEL_IS_GPT) {
+ gpt_list_table(xtra);
+ return;
+ }
list_disk_geometry();
printf("%*s Boot Start End Blocks Id System\n",
w+1, "Device");
- for (i = 0; i < partitions; i++) {
+ for (i = 0; i < g_partitions; i++) {
const struct pte *pe = &ptes[i];
- ullong psects;
- ullong pblocks;
+ sector_t psects;
+ sector_t pblocks;
unsigned podd;
p = pe->part_table;
if (sector_size > 1024)
pblocks *= (sector_size / 1024);
- printf("%s %c %11llu %11llu %11llu%c %2x %s\n",
+ printf("%s %c %11"SECT_FMT"u %11"SECT_FMT"u %11"SECT_FMT"u%c %2x %s\n",
partname(disk_device, i+1, w+2),
!p->boot_ind ? ' ' : p->boot_ind == ACTIVE_FLAG /* boot flag */
? '*' : '?',
- (ullong) cround(get_partition_start(pe)), /* start */
- (ullong) cround(get_partition_start(pe) + psects /* end */
+ cround(get_partition_start_from_dev_start(pe)), /* start */
+ cround(get_partition_start_from_dev_start(pe) + psects /* end */
- (psects ? 1 : 0)),
- (ullong) pblocks, podd ? '+' : ' ', /* odd flag on end */
+ pblocks, podd ? '+' : ' ', /* odd flag on end */
p->sys_ind, /* type id */
partition_type(p->sys_ind)); /* type name */
}
/* Is partition table in disk order? It need not be, but... */
- /* partition table entries are not checked for correct order if this
- is a sgi, sun or aix labeled disk... */
+ /* partition table entries are not checked for correct order
+ * if this is a sgi, sun or aix labeled disk... */
if (LABEL_IS_DOS && wrong_p_order(NULL)) {
/* FIXME */
printf("\nPartition table entries are not in disk order\n");
const struct partition *p;
int i;
- printf("\nDisk %s: %d heads, %d sectors, %d cylinders\n\n",
- disk_device, heads, sectors, cylinders);
+ printf("\nDisk %s: %u heads, %u sectors, %u cylinders\n\n",
+ disk_device, g_heads, g_sectors, g_cylinders);
printf("Nr AF Hd Sec Cyl Hd Sec Cyl Start Size ID\n");
- for (i = 0 ; i < partitions; i++) {
+ for (i = 0; i < g_partitions; i++) {
pe = &ptes[i];
p = (extend ? pe->ext_pointer : pe->part_table);
if (p != NULL) {
- printf("%2d %02x%4d%4d%5d%4d%4d%5d%11u%11u %02x\n",
+ printf("%2u %02x%4u%4u%5u%4u%4u%5u%11"SECT_FMT"u%11"SECT_FMT"u %02x\n",
i + 1, p->boot_ind, p->head,
sector(p->sector),
cylinder(p->sector, p->cyl), p->end_head,
sector(p->end_sector),
cylinder(p->end_sector, p->end_cyl),
- get_start_sect(p), get_nr_sects(p), p->sys_ind);
+ get_start_sect(p), get_nr_sects(p),
+ p->sys_ind);
if (p->sys_ind)
check_consistency(p, i);
}
#if ENABLE_FEATURE_FDISK_WRITABLE
static void
-fill_bounds(ullong *first, ullong *last)
+fill_bounds(sector_t *first, sector_t *last)
{
- int i;
+ unsigned i;
const struct pte *pe = &ptes[0];
const struct partition *p;
- for (i = 0; i < partitions; pe++,i++) {
+ for (i = 0; i < g_partitions; pe++,i++) {
p = pe->part_table;
if (!p->sys_ind || IS_EXTENDED(p->sys_ind)) {
first[i] = 0xffffffff;
last[i] = 0;
} else {
- first[i] = get_partition_start(pe);
+ first[i] = get_partition_start_from_dev_start(pe);
last[i] = first[i] + get_nr_sects(p) - 1;
}
}
}
static void
-check(int n, unsigned h, unsigned s, unsigned c, ullong start)
+check(int n, unsigned h, unsigned s, unsigned c, sector_t start)
{
- ullong total, real_s, real_c;
+ sector_t total, real_s, real_c;
real_s = sector(s) - 1;
real_c = cylinder(s, c);
- total = (real_c * sectors + real_s) * heads + h;
+ total = (real_c * g_sectors + real_s) * g_heads + h;
if (!total)
- printf("Partition %d contains sector 0\n", n);
- if (h >= heads)
- printf("Partition %d: head %d greater than maximum %d\n",
- n, h + 1, heads);
- if (real_s >= sectors)
- printf("Partition %d: sector %d greater than "
- "maximum %d\n", n, s, sectors);
- if (real_c >= cylinders)
- printf("Partition %d: cylinder %llu greater than "
- "maximum %d\n", n, real_c + 1, cylinders);
- if (cylinders <= 1024 && start != total)
- printf("Partition %d: previous sectors %llu disagrees with "
- "total %llu\n", n, start, total);
+ printf("Partition %u contains sector 0\n", n);
+ if (h >= g_heads)
+ printf("Partition %u: head %u greater than maximum %u\n",
+ n, h + 1, g_heads);
+ if (real_s >= g_sectors)
+ printf("Partition %u: sector %u greater than "
+ "maximum %u\n", n, s, g_sectors);
+ if (real_c >= g_cylinders)
+ printf("Partition %u: cylinder %"SECT_FMT"u greater than "
+ "maximum %u\n", n, real_c + 1, g_cylinders);
+ if (g_cylinders <= 1024 && start != total)
+ printf("Partition %u: previous sectors %"SECT_FMT"u disagrees with "
+ "total %"SECT_FMT"u\n", n, start, total);
}
static void
verify(void)
{
int i, j;
- unsigned total = 1;
- ullong first[partitions], last[partitions];
+ sector_t total = 1;
+ sector_t first[g_partitions], last[g_partitions];
struct partition *p;
if (warn_geometry())
}
fill_bounds(first, last);
- for (i = 0; i < partitions; i++) {
+ for (i = 0; i < g_partitions; i++) {
struct pte *pe = &ptes[i];
p = pe->part_table;
if (p->sys_ind && !IS_EXTENDED(p->sys_ind)) {
check_consistency(p, i);
- if (get_partition_start(pe) < first[i])
+ if (get_partition_start_from_dev_start(pe) < first[i])
printf("Warning: bad start-of-data in "
- "partition %d\n", i + 1);
+ "partition %u\n", i + 1);
check(i + 1, p->end_head, p->end_sector, p->end_cyl,
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]))) {
- printf("Warning: partition %d overlaps "
- "partition %d\n", j + 1, i + 1);
+ printf("Warning: partition %u overlaps "
+ "partition %u\n", j + 1, i + 1);
total += first[i] >= first[j] ?
first[i] : first[j];
total -= last[i] <= last[j] ?
if (extended_offset) {
struct pte *pex = &ptes[ext_index];
- ullong e_last = get_start_sect(pex->part_table) +
+ sector_t e_last = get_start_sect(pex->part_table) +
get_nr_sects(pex->part_table) - 1;
- for (i = 4; i < partitions; i++) {
+ for (i = 4; i < g_partitions; i++) {
total++;
p = ptes[i].part_table;
if (!p->sys_ind) {
- if (i != 4 || i + 1 < partitions)
- printf("Warning: partition %d "
+ if (i != 4 || i + 1 < g_partitions)
+ printf("Warning: partition %u "
"is empty\n", i + 1);
} else if (first[i] < extended_offset || last[i] > e_last) {
- printf("Logical partition %d not entirely in "
- "partition %d\n", i + 1, ext_index + 1);
+ printf("Logical partition %u not entirely in "
+ "partition %u\n", i + 1, ext_index + 1);
}
}
}
- if (total > heads * sectors * cylinders)
- printf("Total allocated sectors %d greater than the maximum "
- "%d\n", total, heads * sectors * cylinders);
+ if (total > g_heads * g_sectors * g_cylinders)
+ printf("Total allocated sectors %u greater than the maximum "
+ "%u\n", total, g_heads * g_sectors * g_cylinders);
else {
- total = heads * sectors * cylinders - total;
+ total = g_heads * g_sectors * g_cylinders - total;
if (total != 0)
- printf("%d unallocated sectors\n", total);
+ printf("%"SECT_FMT"u unallocated sectors\n", total);
}
}
int i, num_read = 0;
struct partition *p = ptes[n].part_table;
struct partition *q = ptes[ext_index].part_table;
- ullong limit, temp;
- ullong start, stop = 0;
- ullong first[partitions], last[partitions];
+ sector_t limit, temp;
+ sector_t start, stop = 0;
+ sector_t first[g_partitions], last[g_partitions];
if (p && p->sys_ind) {
printf(msg_part_already_defined, n + 1);
if (n < 4) {
start = sector_offset;
if (display_in_cyl_units || !total_number_of_sectors)
- limit = (ullong) heads * sectors * cylinders - 1;
+ limit = (sector_t) g_heads * g_sectors * g_cylinders - 1;
else
limit = total_number_of_sectors - 1;
if (extended_offset) {
limit = get_start_sect(q) + get_nr_sects(q) - 1;
}
if (display_in_cyl_units)
- for (i = 0; i < partitions; i++)
+ for (i = 0; i < g_partitions; i++)
first[i] = (cround(first[i]) - 1) * units_per_sector;
snprintf(mesg, sizeof(mesg), "First %s", str_units(SINGULAR));
do {
temp = start;
- for (i = 0; i < partitions; i++) {
+ for (i = 0; i < g_partitions; i++) {
int lastplusoff;
- if (start == ptes[i].offset)
+ if (start == ptes[i].offset_from_dev_start)
start += sector_offset;
lastplusoff = last[i] + ((n < 4) ? 0 : sector_offset);
if (start >= first[i] && start <= lastplusoff)
if (start > limit)
break;
if (start >= temp+units_per_sector && num_read) {
- printf("Sector %lld is already allocated\n", temp);
+ printf("Sector %"SECT_FMT"u is already allocated\n", temp);
temp = start;
num_read = 0;
}
if (!num_read && start == temp) {
- ullong saved_start;
+ sector_t saved_start;
saved_start = start;
- start = read_int(cround(saved_start), cround(saved_start), cround(limit),
- 0, mesg);
+ start = read_int(cround(saved_start), cround(saved_start), cround(limit), 0, mesg);
if (display_in_cyl_units) {
start = (start - 1) * units_per_sector;
- if (start < saved_start) start = saved_start;
+ if (start < saved_start)
+ start = saved_start;
}
num_read = 1;
}
if (n > 4) { /* NOT for fifth partition */
struct pte *pe = &ptes[n];
- pe->offset = start - sector_offset;
- if (pe->offset == extended_offset) { /* must be corrected */
- pe->offset++;
+ pe->offset_from_dev_start = start - sector_offset;
+ if (pe->offset_from_dev_start == extended_offset) { /* must be corrected */
+ pe->offset_from_dev_start++;
if (sector_offset == 1)
start++;
}
}
- for (i = 0; i < partitions; i++) {
+ for (i = 0; i < g_partitions; i++) {
struct pte *pe = &ptes[i];
- if (start < pe->offset && limit >= pe->offset)
- limit = pe->offset - 1;
+ if (start < pe->offset_from_dev_start && limit >= pe->offset_from_dev_start)
+ limit = pe->offset_from_dev_start - 1;
if (start < first[i] && limit >= first[i])
limit = first[i] - 1;
}
if (start > limit) {
printf("No free sectors available\n");
if (n > 4)
- partitions--;
+ g_partitions--;
return;
}
if (cround(start) == cround(limit)) {
snprintf(mesg, sizeof(mesg),
"Last %s or +size or +sizeM or +sizeK",
str_units(SINGULAR));
- stop = read_int(cround(start), cround(limit), cround(limit),
- cround(start), mesg);
+ stop = read_int(cround(start), cround(limit), cround(limit), cround(start), mesg);
if (display_in_cyl_units) {
stop = stop * units_per_sector - 1;
if (stop >limit)
set_partition(n, 0, start, stop, sys);
if (n > 4)
- set_partition(n - 1, 1, ptes[n].offset, stop, EXTENDED);
+ set_partition(n - 1, 1, ptes[n].offset_from_dev_start, stop, EXTENDED);
if (IS_EXTENDED(sys)) {
struct pte *pe4 = &ptes[4];
ext_index = n;
pen->ext_pointer = p;
- pe4->offset = extended_offset = start;
+ pe4->offset_from_dev_start = extended_offset = start;
pe4->sectorbuffer = xzalloc(sector_size);
pe4->part_table = pt_offset(pe4->sectorbuffer, 0);
pe4->ext_pointer = pe4->part_table + 1;
pe4->changed = 1;
- partitions = 5;
+ g_partitions = 5;
}
}
static void
add_logical(void)
{
- if (partitions > 5 || ptes[4].part_table->sys_ind) {
- struct pte *pe = &ptes[partitions];
+ if (g_partitions > 5 || ptes[4].part_table->sys_ind) {
+ struct pte *pe = &ptes[g_partitions];
pe->sectorbuffer = xzalloc(sector_size);
pe->part_table = pt_offset(pe->sectorbuffer, 0);
pe->ext_pointer = pe->part_table + 1;
- pe->offset = 0;
+ pe->offset_from_dev_start = 0;
pe->changed = 1;
- partitions++;
+ g_partitions++;
}
- add_partition(partitions - 1, LINUX_NATIVE);
+ add_partition(g_partitions - 1, LINUX_NATIVE);
}
static void
return;
if (LABEL_IS_SUN) {
- add_sun_partition(get_partition(0, partitions), LINUX_NATIVE);
+ add_sun_partition(get_partition(0, g_partitions), LINUX_NATIVE);
return;
}
if (LABEL_IS_SGI) {
- sgi_add_partition(get_partition(0, partitions), LINUX_NATIVE);
+ sgi_add_partition(get_partition(0, g_partitions), LINUX_NATIVE);
return;
}
if (LABEL_IS_AIX) {
for (i = 0; i < 4; i++)
free_primary += !ptes[i].part_table->sys_ind;
- if (!free_primary && partitions >= MAXIMUM_PARTS) {
+ if (!free_primary && g_partitions >= MAXIMUM_PARTS) {
printf("The maximum number of partitions has been created\n");
return;
}
"l logical (5 or over)" : "e extended"));
while (1) {
c = read_nonempty(line);
- if (c == 'p' || c == 'P') {
+ if ((c | 0x20) == 'p') {
i = get_nonexisting_partition(0, 4);
if (i >= 0)
add_partition(i, LINUX_NATIVE);
}
static void
+reread_partition_table(int leave)
+{
+ int i;
+
+ printf("Calling ioctl() to re-read partition table\n");
+ sync();
+ /* Users with slow external USB disks on a 320MHz ARM system (year 2011)
+ * report that sleep is needed, otherwise BLKRRPART may fail with -EIO:
+ */
+ sleep(1);
+ i = ioctl_or_perror(dev_fd, BLKRRPART, NULL,
+ "WARNING: rereading partition table "
+ "failed, kernel still uses old table");
+#if 0
+ if (dos_changed)
+ printf(
+ "\nWARNING: If you have created or modified any DOS 6.x\n"
+ "partitions, please see the fdisk manual page for additional\n"
+ "information\n");
+#endif
+
+ if (leave) {
+ if (ENABLE_FEATURE_CLEAN_UP)
+ close_dev_fd();
+ exit(i != 0);
+ }
+}
+
+static void
write_table(void)
{
int i;
for (i = 0; i < 3; i++)
if (ptes[i].changed)
ptes[3].changed = 1;
- for (i = 3; i < partitions; i++) {
+ for (i = 3; i < g_partitions; i++) {
struct pte *pe = &ptes[i];
-
if (pe->changed) {
write_part_table_flag(pe->sectorbuffer);
- write_sector(pe->offset, pe->sectorbuffer);
+ write_sector(pe->offset_from_dev_start, pe->sectorbuffer);
}
}
}
sgi_write_table();
}
else if (LABEL_IS_SUN) {
- int needw = 0;
-
- for (i = 0; i < 8; i++)
- if (ptes[i].changed)
- needw = 1;
- if (needw)
- sun_write_table();
+ for (i = 0; i < 8; i++) {
+ if (ptes[i].changed) {
+ sun_write_table();
+ break;
+ }
+ }
}
- printf("The partition table has been altered!\n\n");
+ printf("The partition table has been altered.\n");
reread_partition_table(1);
}
-
-static void
-reread_partition_table(int leave)
-{
- int i;
-
- printf("Calling ioctl() to re-read partition table\n");
- sync();
- /* sleep(2); Huh? */
- i = ioctl(fd, BLKRRPART);
-#if 0
- else {
- /* some kernel versions (1.2.x) seem to have trouble
- rereading the partition table, but if asked to do it
- twice, the second time works. - biro@yggdrasil.com */
- sync();
- sleep(2);
- i = ioctl(fd, BLKRRPART);
- }
-#endif
-
- if (i) {
- bb_perror_msg("WARNING: rereading partition table "
- "failed, kernel still uses old table");
- }
-
-#if 0
- if (dos_changed)
- printf(
- "\nWARNING: If you have created or modified any DOS 6.x\n"
- "partitions, please see the fdisk manual page for additional\n"
- "information\n");
-#endif
-
- if (leave) {
- if (ENABLE_FEATURE_CLEAN_UP)
- close(fd);
- exit(i != 0);
- }
-}
#endif /* FEATURE_FDISK_WRITABLE */
#if ENABLE_FEATURE_FDISK_ADVANCED
printf("0x%03X:", i);
printf(" %02X", (unsigned char) pbuffer[i]);
if (l == MAX_PER_LINE - 1) {
- puts("");
+ bb_putchar('\n');
l = -1;
}
}
if (l > 0)
- puts("");
- puts("");
+ bb_putchar('\n');
+ bb_putchar('\n');
}
static void
if (LABEL_IS_SGI || LABEL_IS_SUN)
print_buffer(MBRbuffer);
else {
- for (i = 3; i < partitions; i++)
+ for (i = 3; i < g_partitions; i++)
print_buffer(ptes[i].sectorbuffer);
}
}
static void
-move_begin(int i)
+move_begin(unsigned i)
{
struct pte *pe = &ptes[i];
struct partition *p = pe->part_table;
- ullong new, first;
+ sector_t new, first, nr_sects;
if (warn_geometry())
return;
- if (!p->sys_ind || !get_nr_sects(p) || IS_EXTENDED(p->sys_ind)) {
- printf("Partition %d has no data area\n", i + 1);
+ nr_sects = get_nr_sects(p);
+ if (!p->sys_ind || !nr_sects || IS_EXTENDED(p->sys_ind)) {
+ printf("Partition %u has no data area\n", i + 1);
return;
}
- first = get_partition_start(pe);
- new = read_int(first, first, first + get_nr_sects(p) - 1, first,
- "New beginning of data") - pe->offset;
-
- if (new != get_nr_sects(p)) {
- first = get_nr_sects(p) + get_start_sect(p) - new;
- set_nr_sects(p, first);
- set_start_sect(p, new);
+ first = get_partition_start_from_dev_start(pe); /* == pe->offset_from_dev_start + get_start_sect(p) */
+ new = read_int(0 /*was:first*/, first, first + nr_sects - 1, first, "New beginning of data");
+ if (new != first) {
+ sector_t new_relative = new - pe->offset_from_dev_start;
+ nr_sects += (get_start_sect(p) - new_relative);
+ set_start_sect(p, new_relative);
+ set_nr_sects(p, nr_sects);
+ read_nonempty("Recalculate C/H/S values? (Y/N): ");
+ if ((line_ptr[0] | 0x20) == 'y')
+ set_hsc_start_end(p, new, new + nr_sects - 1);
pe->changed = 1;
}
}
char c;
while (1) {
- putchar('\n');
- c = tolower(read_nonempty("Expert command (m for help): "));
+ bb_putchar('\n');
+ c = 0x20 | read_nonempty("Expert command (m for help): ");
switch (c) {
case 'a':
if (LABEL_IS_SUN)
break;
case 'b':
if (LABEL_IS_DOS)
- move_begin(get_partition(0, partitions));
+ move_begin(get_partition(0, g_partitions));
break;
case 'c':
- user_cylinders = cylinders =
- read_int(1, cylinders, 1048576, 0,
+ user_cylinders = g_cylinders =
+ read_int(1, g_cylinders, 1048576, 0,
"Number of cylinders");
if (LABEL_IS_SUN)
- sun_set_ncyl(cylinders);
+ sun_set_ncyl(g_cylinders);
if (LABEL_IS_DOS)
warn_cylinders();
break;
#endif
break;
case 'h':
- user_heads = heads = read_int(1, heads, 256, 0,
- "Number of heads");
+ user_heads = g_heads = read_int(1, g_heads, 256, 0, "Number of heads");
update_units();
break;
case 'i':
x_list_table(0);
break;
case 'q':
- close(fd);
- puts("");
- exit(0);
+ if (ENABLE_FEATURE_CLEAN_UP)
+ close_dev_fd();
+ bb_putchar('\n');
+ exit(EXIT_SUCCESS);
case 'r':
return;
case 's':
- user_sectors = sectors = read_int(1, sectors, 63, 0,
- "Number of sectors");
+ user_sectors = g_sectors = read_int(1, g_sectors, 63, 0, "Number of sectors");
if (dos_compatible_flag) {
- sector_offset = sectors;
+ sector_offset = g_sectors;
printf("Warning: setting sector offset for DOS "
"compatiblity\n");
}
return 0;
snprintf(buf, sizeof(buf), "/proc/ide/%s/media", device+5);
- procf = fopen(buf, "r");
+ procf = fopen_for_read(buf);
if (procf != NULL && fgets(buf, sizeof(buf), procf))
is_ide = (!strncmp(buf, "cdrom", 5) ||
!strncmp(buf, "tape", 4));
static void
-trydev(const char *device, int user_specified)
+open_list_and_close(const char *device, int user_specified)
{
int gb;
if (!user_specified)
if (is_ide_cdrom_or_tape(device))
return;
- fd = open(disk_device, type_open);
- if (fd >= 0) {
- gb = get_boot(try_only);
- if (gb > 0) { /* I/O error */
- close(fd);
- } else if (gb < 0) { /* no DOS signature */
- list_disk_geometry();
- if (LABEL_IS_AIX) {
- return;
- }
-#if ENABLE_FEATURE_OSF_LABEL
- if (bsd_trydev(device) < 0)
-#endif
- printf("Disk %s doesn't contain a valid "
- "partition table\n", device);
- close(fd);
- } else {
- close(fd);
- list_table(0);
-#if ENABLE_FEATURE_FDISK_WRITABLE
- if (!LABEL_IS_SUN && partitions > 4){
- delete_partition(ext_index);
- }
-#endif
- }
- } else {
+
+ /* Open disk_device, save file descriptor to dev_fd */
+ errno = 0;
+ gb = get_boot(TRY_ONLY);
+ if (gb > 0) { /* I/O error */
/* Ignore other errors, since we try IDE
and SCSI hard disks which may not be
installed on the system. */
- if (errno == EACCES) {
- printf("Cannot open %s\n", device);
- return;
+ if (user_specified || errno == EACCES)
+ bb_perror_msg("can't open '%s'", device);
+ return;
+ }
+
+ if (gb < 0) { /* no DOS signature */
+ list_disk_geometry();
+ if (LABEL_IS_AIX)
+ goto ret;
+#if ENABLE_FEATURE_OSF_LABEL
+ if (bsd_trydev(device) < 0)
+#endif
+ printf("Disk %s doesn't contain a valid "
+ "partition table\n", device);
+ } else {
+ list_table(0);
+#if ENABLE_FEATURE_FDISK_WRITABLE
+ if (!LABEL_IS_SUN && g_partitions > 4) {
+ delete_partition(ext_index);
}
+#endif
}
+ ret:
+ close_dev_fd();
+}
+
+/* Is it a whole disk? The digit check is still useful
+ for Xen devices for example. */
+static int is_whole_disk(const char *disk)
+{
+ unsigned len;
+ int fd = open(disk, O_RDONLY);
+
+ if (fd != -1) {
+ struct hd_geometry geometry;
+ int err = ioctl(fd, HDIO_GETGEO, &geometry);
+ close(fd);
+ if (!err)
+ return (geometry.start == 0);
+ }
+
+ /* Treat "nameN" as a partition name, not whole disk */
+ /* note: mmcblk0 should work from the geometry check above */
+ len = strlen(disk);
+ if (len != 0 && isdigit(disk[len - 1]))
+ return 0;
+
+ return 1;
}
/* for fdisk -l: try all things in /proc/partitions
that look like a partition name (do not end in a digit) */
static void
-tryprocpt(void)
+list_devs_in_proc_partititons(void)
{
FILE *procpt;
- char line[100], ptname[100], devname[120], *s;
+ char line[100], ptname[100], devname[120];
int ma, mi, sz;
procpt = fopen_or_warn("/proc/partitions", "r");
while (fgets(line, sizeof(line), procpt)) {
- if (sscanf(line, " %d %d %d %[^\n ]",
+ if (sscanf(line, " %u %u %u %[^\n ]",
&ma, &mi, &sz, ptname) != 4)
continue;
- for (s = ptname; *s; s++);
- if (isdigit(s[-1]))
- continue;
+
sprintf(devname, "/dev/%s", ptname);
- trydev(devname, 0);
+ if (is_whole_disk(devname))
+ open_list_and_close(devname, 0);
}
#if ENABLE_FEATURE_CLEAN_UP
fclose(procpt);
}
#endif
-int fdisk_main(int argc, char **argv);
-int fdisk_main(int argc, char **argv)
+int fdisk_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int fdisk_main(int argc UNUSED_PARAM, char **argv)
{
- char *str_b, *str_C, *str_H, *str_S;
unsigned opt;
/*
* fdisk -v
*
* Options -C, -H, -S set the geometry.
*/
- enum {
- OPT_b = 1 << 0,
- OPT_C = 1 << 1,
- OPT_H = 1 << 2,
- OPT_l = 1 << 3,
- OPT_S = 1 << 4,
- OPT_u = 1 << 5,
- OPT_s = (1 << 6) * ENABLE_FEATURE_FDISK_BLKSIZE,
- };
-
- PTR_TO_GLOBALS = xzalloc(sizeof(G));
-
- opt = getopt32(argc, argv, "b:C:H:lS:u" USE_FEATURE_FDISK_BLKSIZE("s"),
- &str_b, &str_C, &str_H, &str_S);
- argc -= optind;
+ INIT_G();
+
+ close_dev_fd(); /* needed: fd 3 must not stay closed */
+
+ opt_complementary = "b+:C+:H+:S+"; /* numeric params */
+ opt = getopt32(argv, "b:C:H:lS:u" IF_FEATURE_FDISK_BLKSIZE("s"),
+ §or_size, &user_cylinders, &user_heads, &user_sectors);
argv += optind;
- if (opt & OPT_b) { // -b
+ if (opt & OPT_b) {
/* Ugly: this sector size is really per device,
- so cannot be combined with multiple disks,
- and the same goes for the C/H/S options.
- */
- sector_size = xatoi_u(str_b);
- if (sector_size != 512 && sector_size != 1024 &&
- sector_size != 2048)
+ * so cannot be combined with multiple disks,
+ * and the same goes for the C/H/S options.
+ */
+ if (sector_size < 512
+ || sector_size > 0x10000
+ || (sector_size & (sector_size-1)) /* not power of 2 */
+ ) {
bb_show_usage();
+ }
sector_offset = 2;
user_set_sector_size = 1;
}
- if (opt & OPT_C) user_cylinders = xatoi_u(str_C); // -C
- if (opt & OPT_H) { // -H
- user_heads = xatoi_u(str_H);
- if (user_heads <= 0 || user_heads >= 256)
- user_heads = 0;
- }
- //if (opt & OPT_l) // -l
- if (opt & OPT_S) { // -S
- user_sectors = xatoi_u(str_S);
- if (user_sectors <= 0 || user_sectors >= 64)
- user_sectors = 0;
- }
- if (opt & OPT_u) display_in_cyl_units = 0; // -u
- //if (opt & OPT_s) // -s
-
- if (user_set_sector_size && argc != 1)
- printf("Warning: the -b (set sector size) option should"
- " be used with one specified device\n");
+ if (user_heads <= 0 || user_heads >= 256)
+ user_heads = 0;
+ if (user_sectors <= 0 || user_sectors >= 64)
+ user_sectors = 0;
+ if (opt & OPT_u)
+ display_in_cyl_units = 0; // -u
#if ENABLE_FEATURE_FDISK_WRITABLE
if (opt & OPT_l) {
nowarn = 1;
#endif
- type_open = O_RDONLY;
- if (argc > 0) {
- int k;
-#if defined(__GNUC__)
- /* avoid gcc warning:
- variable `k' might be clobbered by `longjmp' */
- (void)&k;
-#endif
+ if (*argv) {
listing = 1;
- for (k = 0; k < argc; k++)
- trydev(argv[k], 1);
+ do {
+ open_list_and_close(*argv, 1);
+ } while (*++argv);
} else {
- /* we no longer have default device names */
- /* but, we can use /proc/partitions instead */
- tryprocpt();
+ /* we don't have device names, */
+ /* use /proc/partitions instead */
+ list_devs_in_proc_partititons();
}
return 0;
#if ENABLE_FEATURE_FDISK_WRITABLE
#if ENABLE_FEATURE_FDISK_BLKSIZE
if (opt & OPT_s) {
- long size;
int j;
nowarn = 1;
- type_open = O_RDONLY;
-
- if (argc <= 0)
+ if (!argv[0])
bb_show_usage();
-
- for (j = 0; j < argc; j++) {
- disk_device = argv[j];
- fd = open(disk_device, type_open);
- if (fd < 0)
- fdisk_fatal(unable_to_open);
- if (ioctl(fd, BLKGETSIZE, &size))
- fdisk_fatal(ioctl_error);
+ for (j = 0; argv[j]; j++) {
+ unsigned long long size;
+ fd = xopen(argv[j], O_RDONLY);
+ size = bb_BLKGETSIZE_sectors(fd) / 2;
close(fd);
- if (argc == 1)
- printf("%ld\n", size/2);
+ if (argv[1])
+ printf("%llu\n", size);
else
- printf("%s: %ld\n", argv[j], size/2);
+ printf("%s: %llu\n", argv[j], size);
}
return 0;
}
#endif
#if ENABLE_FEATURE_FDISK_WRITABLE
- if (argc != 1)
+ if (!argv[0] || argv[1])
bb_show_usage();
disk_device = argv[0];
- get_boot(fdisk);
+ get_boot(OPEN_MAIN);
if (LABEL_IS_OSF) {
/* OSF label, and no DOS label */
"disklabel mode\n", disk_device);
bsd_select();
/*Why do we do this? It seems to be counter-intuitive*/
- current_label_type = label_dos;
+ current_label_type = LABEL_DOS;
/* If we return we may want to make an empty DOS label? */
}
while (1) {
int c;
- putchar('\n');
- c = tolower(read_nonempty("Command (m for help): "));
+ bb_putchar('\n');
+ c = 0x20 | read_nonempty("Command (m for help): ");
switch (c) {
case 'a':
if (LABEL_IS_DOS)
- toggle_active(get_partition(1, partitions));
+ toggle_active(get_partition(1, g_partitions));
else if (LABEL_IS_SUN)
- toggle_sunflags(get_partition(1, partitions),
+ toggle_sunflags(get_partition(1, g_partitions),
0x01);
else if (LABEL_IS_SGI)
sgi_set_bootpartition(
- get_partition(1, partitions));
+ get_partition(1, g_partitions));
else
unknown_command(c);
break;
printf("\nThe current boot file is: %s\n",
sgi_get_bootfile());
if (read_maybe_empty("Please enter the name of the "
- "new boot file: ") == '\n')
+ "new boot file: ") == '\n')
printf("Boot file unchanged\n");
else
sgi_set_bootfile(line_ptr);
if (LABEL_IS_DOS)
toggle_dos_compatibility_flag();
else if (LABEL_IS_SUN)
- toggle_sunflags(get_partition(1, partitions),
+ toggle_sunflags(get_partition(1, g_partitions),
0x10);
else if (LABEL_IS_SGI)
sgi_set_swappartition(
- get_partition(1, partitions));
+ get_partition(1, g_partitions));
else
unknown_command(c);
break;
get_existing_partition() only works for Linux-like
partition tables */
if (!LABEL_IS_SGI) {
- j = get_existing_partition(1, partitions);
+ j = get_existing_partition(1, g_partitions);
} else {
- j = get_partition(1, partitions);
+ j = get_partition(1, g_partitions);
}
if (j >= 0)
delete_partition(j);
list_table(0);
break;
case 'q':
- close(fd);
- puts("");
+ if (ENABLE_FEATURE_CLEAN_UP)
+ close_dev_fd();
+ bb_putchar('\n');
return 0;
case 's':
#if ENABLE_FEATURE_SUN_LABEL
verify();
break;
case 'w':
- write_table(); /* does not return */
+ write_table(); /* does not return */
break;
#if ENABLE_FEATURE_FDISK_ADVANCED
case 'x':
projects / platform / upstream / busybox.git / blobdiff