* 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
unsigned char size4[4]; /* nr of sectors in partition */
} PACKED;
-static const char unable_to_open[] ALIGN1 = "can't open '%s'";
-static const char unable_to_read[] ALIGN1 = "can't read from %s";
-static const char unable_to_seek[] ALIGN1 = "can't seek on %s";
+/*
+ * 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
+};
+
+#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 STATIC_OSF extern
#endif
+#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
+
enum action { OPEN_MAIN, TRY_ONLY, CREATE_EMPTY_DOS, CREATE_EMPTY_SUN };
static void update_units(void);
#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 sector_t get_start_sect(const struct partition *p);
static sector_t 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 */
- sector_t offset_from_dev_start; /* disk sector number */
- char *sectorbuffer; /* disk sector contents */
-#if ENABLE_FEATURE_FDISK_WRITABLE
- char changed; /* boolean */
-#endif
-};
-
/* DOS partition types */
static const char *const i386_sys_types[] = {
{
int sz;
- sz = read_line_input(prompt, line_buffer, sizeof(line_buffer), NULL);
+ sz = read_line_input(NULL, prompt, line_buffer, sizeof(line_buffer), /*timeout*/ -1);
if (sz <= 0)
exit(EXIT_SUCCESS); /* Ctrl-D or Ctrl-C */
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)
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");
printf(" sectors");
if (!g_cylinders)
printf(" cylinders");
- printf(
#if ENABLE_FEATURE_FDISK_WRITABLE
- " (settable in the extra functions menu)"
+ puts(" (settable in the extra functions menu)");
+#else
+ bb_putchar('\n');
#endif
- "\n");
return 1;
}
p = pex->part_table;
if (!get_start_sect(p)) {
- printf("Bad offset in primary extended partition\n");
+ puts("Bad offset in primary extended partition");
return;
}
/*
* Opens disk_device and optionally reads MBR.
- * FIXME: document what each 'what' value will do!
+ * 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
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;
current_label_type = LABEL_OSF;
return 0;
}
- printf("This disk has both DOS and BSD magic.\n"
- "Give the 'b' command to go to BSD mode.\n");
+ puts("This disk has both DOS and BSD magic.\n"
+ "Give the 'b' command to go to BSD mode.");
}
#endif
#else
if (!valid_part_table_flag(MBRbuffer)) {
if (what == OPEN_MAIN) {
- printf("Device contains neither a valid DOS "
- "partition table, nor Sun, SGI or OSF "
- "disklabel\n");
+ puts("Device contains neither a valid DOS "
+ "partition table, nor Sun, SGI, OSF or GPT "
+ "disklabel");
#ifdef __sparc__
IF_FEATURE_SUN_LABEL(create_sunlabel();)
#else
}
if (value >= low && value <= high)
break;
- printf("Value is out of range\n");
+ puts("Value is out of range");
}
return value;
}
printf("Selected partition %u\n", pno+1);
return pno;
}
- printf("No partition is defined yet!\n");
+ puts("No partition is defined yet!");
return -1;
not_unique:
printf("Selected partition %u\n", pno+1);
return pno;
}
- printf("All primary partitions have been defined already!\n");
+ puts("All primary partitions have been defined already!");
return -1;
not_unique:
dos_compatible_flag = 1 - dos_compatible_flag;
if (dos_compatible_flag) {
sector_offset = g_sectors;
- printf("DOS Compatibility flag is set\n");
+ printf("DOS Compatibility flag is %sset\n", "");
} else {
sector_offset = 1;
- printf("DOS Compatibility flag is not set\n");
+ printf("DOS Compatibility flag is %sset\n", "not ");
}
}
sys = read_hex(get_sys_types());
if (!sys && !LABEL_IS_SGI && !LABEL_IS_SUN) {
- printf("Type 0 means free space to many systems\n"
- "(but not to Linux). Having partitions of\n"
- "type 0 is probably unwise.\n");
+ puts("Type 0 means free space to many systems\n"
+ "(but not to Linux). Having partitions of\n"
+ "type 0 is probably unwise.");
/* break; */
}
if (!LABEL_IS_SUN && !LABEL_IS_SGI) {
if (IS_EXTENDED(sys) != IS_EXTENDED(p->sys_ind)) {
- printf("You cannot change a partition into"
- " an extended one or vice versa\n");
+ puts("You cannot change a partition into"
+ " an extended one or vice versa");
break;
}
}
if (sys < 256) {
#if ENABLE_FEATURE_SUN_LABEL
if (LABEL_IS_SUN && i == 2 && sys != SUN_WHOLE_DISK)
- printf("Consider leaving partition 3 "
- "as Whole disk (5),\n"
- "as SunOS/Solaris expects it and "
- "even Linux likes it\n\n");
+ puts("Consider leaving partition 3 "
+ "as Whole disk (5),\n"
+ "as SunOS/Solaris expects it and "
+ "even Linux likes it\n");
#endif
#if ENABLE_FEATURE_SGI_LABEL
if (LABEL_IS_SGI &&
(i == 8 && sys != 0)
)
) {
- printf("Consider leaving partition 9 "
- "as volume header (0),\nand "
- "partition 11 as entire volume (6)"
- "as IRIX expects it\n\n");
+ puts("Consider leaving partition 9 "
+ "as volume header (0),\nand "
+ "partition 11 as entire volume (6)"
+ "as IRIX expects it\n");
}
#endif
if (sys == origsys)
int i,k;
if (!wrong_p_order(NULL)) {
- printf("Ordering is already correct\n\n");
+ puts("Ordering is already correct\n");
return;
}
if (i)
fix_chain_of_logicals();
- printf("Done.\n");
-
+ puts("Done");
}
#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();
* 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");
+ puts("\nPartition table entries are not in disk order");
}
}
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");
+ puts("Nr AF Hd Sec Cyl Hd Sec Cyl Start Size ID");
for (i = 0; i < g_partitions; i++) {
pe = &ptes[i];
p = (extend ? pe->ext_pointer : pe->part_table);
limit = first[i] - 1;
}
if (start > limit) {
- printf("No free sectors available\n");
+ puts("No free sectors available");
if (n > 4)
g_partitions--;
return;
return;
}
if (LABEL_IS_AIX) {
- printf("Sorry - this fdisk cannot handle AIX disk labels.\n"
+ puts("Sorry - this fdisk cannot handle AIX disk labels.\n"
"If you want to add DOS-type partitions, create a new empty DOS partition\n"
-"table first (use 'o'). This will destroy the present disk contents.\n");
+"table first (use 'o'). This will destroy the present disk contents.");
return;
}
free_primary += !ptes[i].part_table->sys_ind;
if (!free_primary && g_partitions >= MAXIMUM_PARTS) {
- printf("The maximum number of partitions has been created\n");
+ puts("The maximum number of partitions has been created");
return;
}
if (extended_offset)
add_logical();
else
- printf("You must delete some partition and add "
- "an extended partition first\n");
+ puts("You must delete some partition and add "
+ "an extended partition first");
} else {
char c, line[80];
snprintf(line, sizeof(line),
}
}
+static void
+reread_partition_table(int leave)
+{
+ int i;
+
+ puts("Calling ioctl() to re-read partition table");
+ 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)
+ puts(
+ "\nWARNING: If you have created or modified any DOS 6.x\n"
+ "partitions, please see the fdisk manual page for additional\n"
+ "information");
+#endif
+
+ if (leave) {
+ if (ENABLE_FEATURE_CLEAN_UP)
+ close_dev_fd();
+ exit(i != 0);
+ }
+}
+
static void
write_table(void)
{
ptes[3].changed = 1;
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_from_dev_start, pe->sectorbuffer);
}
}
else if (LABEL_IS_SGI) {
- /* no test on change? the printf below might be mistaken */
+ /* no test on change? the "altered" msg below might be mistaken */
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");
+ puts("The partition table has been altered.");
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_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);
- }
-}
#endif /* FEATURE_FDISK_WRITABLE */
#if ENABLE_FEATURE_FDISK_ADVANCED
printf("Partition %u has no data area\n", i + 1);
return;
}
- first = get_partition_start_from_dev_start(pe);
- /* == pe->offset_from_dev_start + get_start_sect(p) */
+ 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;
user_sectors = g_sectors = read_int(1, g_sectors, 63, 0, "Number of sectors");
if (dos_compatible_flag) {
sector_offset = g_sectors;
- printf("Warning: setting sector offset for DOS "
- "compatiblity\n");
+ puts("Warning: setting sector offset for DOS "
+ "compatiblity");
}
update_units();
break;
the process hangs on the attempt to read a music CD.
So try to be careful. This only works since 2.1.73. */
- if (strncmp("/dev/hd", device, 7))
+ if (!is_prefixed_with(device, "/dev/hd"))
return 0;
snprintf(buf, sizeof(buf), "/proc/ide/%s/media", device+5);
procf = fopen_for_read(buf);
if (procf != NULL && fgets(buf, sizeof(buf), procf))
- is_ide = (!strncmp(buf, "cdrom", 5) ||
- !strncmp(buf, "tape", 4));
+ is_ide = (is_prefixed_with(buf, "cdrom") ||
+ is_prefixed_with(buf, "tape"));
else
/* Now when this proc file does not exist, skip the
device when it is read-only. */
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
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");
if (sscanf(line, " %u %u %u %[^\n ]",
&ma, &mi, &sz, ptname) != 4)
continue;
- for (s = ptname; *s; s++)
- continue;
- /* note: excluding '0': e.g. mmcblk0 is not a partition name! */
- if (s[-1] >= '1' && s[-1] <= '9')
- continue;
+
sprintf(devname, "/dev/%s", ptname);
- open_list_and_close(devname, 0);
+ if (is_whole_disk(devname))
+ open_list_and_close(devname, 0);
}
#if ENABLE_FEATURE_CLEAN_UP
fclose(procpt);
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"),
+ 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) {
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')
- printf("Boot file unchanged\n");
+ "new boot file: ") == '\n')
+ puts("Boot file unchanged");
else
sgi_set_bootfile(line_ptr);
}
verify();
break;
case 'w':
- write_table(); /* does not return */
+ write_table(); /* does not return */
break;
#if ENABLE_FEATURE_FDISK_ADVANCED
case 'x':
if (LABEL_IS_SGI) {
- printf("\n\tSorry, no experts menu for SGI "
- "partition tables available\n\n");
+ puts("\n\tSorry, no experts menu for SGI "
+ "partition tables available\n");
} else
xselect();
break;
projects / oweals / busybox.git / blobdiff