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-rw-r--r--util-linux/Config.in18
-rw-r--r--util-linux/fdisk.c422
2 files changed, 254 insertions, 186 deletions
diff --git a/util-linux/Config.in b/util-linux/Config.in
index 0c84c77..2494e6e 100644
--- a/util-linux/Config.in
+++ b/util-linux/Config.in
@@ -44,38 +44,46 @@ config CONFIG_FDISK
help
Please submit a patch to add help text for this item.
+config CONFIG_FEATURE_FDISK_WRITABLE
+ bool " Write support"
+ default y
+ depends on CONFIG_FDISK
+ help
+ Allow changes to be written to disk, without this you
+ will only be able to view the partition table.
+
config CONFIG_FEATURE_AIX_LABEL
bool " Support AIX disklabels"
default n
- depends on CONFIG_FDISK
+ depends on CONFIG_FDISK && CONFIG_FEATURE_FDISK_WRITABLE
help
Please submit a patch to add help text for this item.
config CONFIG_FEATURE_SGI_LABEL
bool " Support SGI disklabels"
default n
- depends on CONFIG_FDISK
+ depends on CONFIG_FDISK && CONFIG_FEATURE_FDISK_WRITABLE
help
Please submit a patch to add help text for this item.
config CONFIG_FEATURE_SUN_LABEL
bool " Support SUN disklabels"
default n
- depends on CONFIG_FDISK
+ depends on CONFIG_FDISK && CONFIG_FEATURE_FDISK_WRITABLE
help
Please submit a patch to add help text for this item.
config CONFIG_FEATURE_OSF_LABEL
bool " Support BSD disklabels"
default n
- depends on CONFIG_FDISK
+ depends on CONFIG_FDISK && CONFIG_FEATURE_FDISK_WRITABLE
help
Please submit a patch to add help text for this item.
config CONFIG_FEATURE_FDISK_ADVANCED
bool " Support expert mode"
default n
- depends on CONFIG_FDISK
+ depends on CONFIG_FDISK && CONFIG_FEATURE_FDISK_WRITABLE
help
Please submit a patch to add help text for this item.
diff --git a/util-linux/fdisk.c b/util-linux/fdisk.c
index 916ab1f..696e64c 100644
--- a/util-linux/fdisk.c
+++ b/util-linux/fdisk.c
@@ -47,7 +47,7 @@
#include <stdint.h> /* for uint32_t, uint16_t, uint8_t, int16_t, etc */
/* Copied from linux/major.h */
-#define FLOPPY_MAJOR 2
+#define FLOPPY_MAJOR 2
#include <sys/utsname.h>
@@ -128,7 +128,6 @@ static char MBRbuffer[MAX_SECTOR_SIZE];
static int sun_label; /* looking at sun disklabel */
#else
#define sun_label 0
-#define check_sun_label() 0
#endif
#ifdef CONFIG_FEATURE_SGI_LABEL
static int sgi_label; /* looking at sgi disklabel */
@@ -152,7 +151,6 @@ static int possibly_osf_label;
static uint heads, sectors, cylinders;
static void update_units(void);
-static const char *partition_type(unsigned char type);
/*
* return partition name - uses static storage unless buf is supplied
@@ -212,27 +210,24 @@ enum failure {
enum action {fdisk, require, try_only, create_empty_dos, create_empty_sun};
-struct geom {
- unsigned int heads;
- unsigned int sectors;
- unsigned int cylinders;
-};
-
static const char *disk_device;
-static char *line_ptr;
static int fd; /* the disk */
static int partitions = 4; /* maximum partition + 1 */
static uint display_in_cyl_units = 1;
static uint units_per_sector = 1;
+#ifdef CONFIG_FEATURE_FDISK_WRITABLE
+static char *line_ptr;
static void change_units(void);
-static void fdisk_fatal(enum failure why) __attribute__ ((noreturn));
-static void get_geometry(struct geom *);
-static int get_boot(enum action what);
+static void reread_partition_table(int leave);
+static void delete_partition(int i);
static int get_partition(int warn, int max);
static void list_types(const struct systypes *sys);
-static void reread_partition_table(int leave);
-static int valid_part_table_flag(const unsigned char *b);
static uint read_int(uint low, uint dflt, uint high, uint base, char *mesg);
+#endif
+static const char *partition_type(unsigned char type);
+static void fdisk_fatal(enum failure why) __attribute__ ((noreturn));
+static void get_geometry(void);
+static int get_boot(enum action what);
#define PLURAL 0
#define SINGULAR 1
@@ -276,13 +271,15 @@ static unsigned int get_nr_sects(const struct partition *p);
static struct pte {
struct partition *part_table; /* points into sectorbuffer */
struct partition *ext_pointer; /* points into sectorbuffer */
+#ifdef CONFIG_FEATURE_FDISK_WRITABLE
char changed; /* boolean */
+#endif
uint offset; /* disk sector number */
char *sectorbuffer; /* disk sector contents */
} ptes[MAXIMUM_PARTS];
-static char line_buffer[LINE_LENGTH];
+#ifdef CONFIG_FEATURE_FDISK_WRITABLE
static void
set_all_unchanged(void) {
int i;
@@ -295,7 +292,7 @@ static void
set_changed(int i) {
ptes[i].changed = 1;
}
-
+#endif /* CONFIG_FEATURE_FDISK_WRITABLE */
#if defined(CONFIG_FEATURE_SGI_LABEL) || defined(CONFIG_FEATURE_OSF_LABEL)
static struct partition *
@@ -312,6 +309,14 @@ str_units(int n) { /* n==1: use singular */
return display_in_cyl_units ? _("cylinders") : _("sectors");
}
+static int
+valid_part_table_flag(const unsigned char *b) {
+ return (b[510] == 0x55 && b[511] == 0xaa);
+}
+
+#ifdef CONFIG_FEATURE_FDISK_WRITABLE
+static char line_buffer[LINE_LENGTH];
+
/* read line; return 0 or first char */
static int
read_line(void)
@@ -324,7 +329,6 @@ read_line(void)
if (feof(stdin))
got_eof++; /* user typed ^D ? */
if (got_eof >= 3) {
- fflush(stdout);
fprintf(stderr, _("\ngot EOF thrice - exiting..\n"));
exit(1);
}
@@ -375,6 +379,7 @@ read_hex(const struct systypes *sys)
}
}
}
+#endif /* CONFIG_FEATURE_FDISK_WRITABLE */
#ifdef CONFIG_FEATURE_AIX_LABEL
/*
@@ -1194,60 +1199,59 @@ static void
xbsd_print_disklabel (int show_all) {
struct xbsd_disklabel *lp = &xbsd_dlabel;
struct xbsd_partition *pp;
- FILE *f = stdout;
int i, j;
if (show_all) {
#if defined (__alpha__)
- fprintf(f, "# %s:\n", disk_device);
+ printf("# %s:\n", disk_device);
#else
- fprintf(f, "# %s:\n", partname(disk_device, xbsd_part_index+1, 0));
+ printf("# %s:\n", partname(disk_device, xbsd_part_index+1, 0));
#endif
if ((unsigned) lp->d_type < BSD_DKMAXTYPES)
- fprintf(f, _("type: %s\n"), xbsd_dktypenames[lp->d_type]);
+ printf(_("type: %s\n"), xbsd_dktypenames[lp->d_type]);
else
- fprintf(f, _("type: %d\n"), lp->d_type);
- fprintf(f, _("disk: %.*s\n"), (int) sizeof(lp->d_typename), lp->d_typename);
- fprintf(f, _("label: %.*s\n"), (int) sizeof(lp->d_packname), lp->d_packname);
- fprintf(f, _("flags:"));
+ printf(_("type: %d\n"), lp->d_type);
+ printf(_("disk: %.*s\n"), (int) sizeof(lp->d_typename), lp->d_typename);
+ printf(_("label: %.*s\n"), (int) sizeof(lp->d_packname), lp->d_packname);
+ printf(_("flags:"));
if (lp->d_flags & BSD_D_REMOVABLE)
- fprintf(f, _(" removable"));
+ printf(_(" removable"));
if (lp->d_flags & BSD_D_ECC)
- fprintf(f, _(" ecc"));
+ printf(_(" ecc"));
if (lp->d_flags & BSD_D_BADSECT)
- fprintf(f, _(" badsect"));
- fprintf(f, "\n");
+ printf(_(" badsect"));
+ printf("\n");
/* On various machines the fields of *lp are short/int/long */
/* In order to avoid problems, we cast them all to long. */
- fprintf(f, _("bytes/sector: %ld\n"), (long) lp->d_secsize);
- fprintf(f, _("sectors/track: %ld\n"), (long) lp->d_nsectors);
- fprintf(f, _("tracks/cylinder: %ld\n"), (long) lp->d_ntracks);
- fprintf(f, _("sectors/cylinder: %ld\n"), (long) lp->d_secpercyl);
- fprintf(f, _("cylinders: %ld\n"), (long) lp->d_ncylinders);
- fprintf(f, _("rpm: %d\n"), lp->d_rpm);
- fprintf(f, _("interleave: %d\n"), lp->d_interleave);
- fprintf(f, _("trackskew: %d\n"), lp->d_trackskew);
- fprintf(f, _("cylinderskew: %d\n"), lp->d_cylskew);
- fprintf(f, _("headswitch: %ld\t\t# milliseconds\n"),
+ printf(_("bytes/sector: %ld\n"), (long) lp->d_secsize);
+ printf(_("sectors/track: %ld\n"), (long) lp->d_nsectors);
+ printf(_("tracks/cylinder: %ld\n"), (long) lp->d_ntracks);
+ printf(_("sectors/cylinder: %ld\n"), (long) lp->d_secpercyl);
+ printf(_("cylinders: %ld\n"), (long) lp->d_ncylinders);
+ printf(_("rpm: %d\n"), lp->d_rpm);
+ printf(_("interleave: %d\n"), lp->d_interleave);
+ printf(_("trackskew: %d\n"), lp->d_trackskew);
+ printf(_("cylinderskew: %d\n"), lp->d_cylskew);
+ printf(_("headswitch: %ld\t\t# milliseconds\n"),
(long) lp->d_headswitch);
- fprintf(f, _("track-to-track seek: %ld\t# milliseconds\n"),
+ printf(_("track-to-track seek: %ld\t# milliseconds\n"),
(long) lp->d_trkseek);
- fprintf(f, _("drivedata: "));
+ printf(_("drivedata: "));
for (i = NDDATA - 1; i >= 0; i--)
if (lp->d_drivedata[i])
break;
if (i < 0)
i = 0;
for (j = 0; j <= i; j++)
- fprintf(f, "%ld ", (long) lp->d_drivedata[j]);
+ printf("%ld ", (long) lp->d_drivedata[j]);
}
- fprintf (f, _("\n%d partitions:\n"), lp->d_npartitions);
- fprintf (f, _("# start end size fstype [fsize bsize cpg]\n"));
+ printf(_("\n%d partitions:\n"), lp->d_npartitions);
+ printf(_("# start end size fstype [fsize bsize cpg]\n"));
pp = lp->d_partitions;
for (i = 0; i < lp->d_npartitions; i++, pp++) {
if (pp->p_size) {
if (display_in_cyl_units && lp->d_secpercyl) {
- fprintf(f, " %c: %8ld%c %8ld%c %8ld%c ",
+ printf(" %c: %8ld%c %8ld%c %8ld%c ",
'a' + i,
(long) pp->p_offset / lp->d_secpercyl + 1,
(pp->p_offset % lp->d_secpercyl) ? '*' : ' ',
@@ -1257,33 +1261,33 @@ xbsd_print_disklabel (int show_all) {
(long) pp->p_size / lp->d_secpercyl,
(pp->p_size % lp->d_secpercyl) ? '*' : ' ');
} else {
- fprintf(f, " %c: %8ld %8ld %8ld ",
+ printf(" %c: %8ld %8ld %8ld ",
'a' + i,
(long) pp->p_offset,
(long) pp->p_offset + pp->p_size - 1,
(long) pp->p_size);
}
if ((unsigned) pp->p_fstype < BSD_FSMAXTYPES)
- fprintf(f, "%8.8s", xbsd_fstypes[pp->p_fstype].name);
+ printf("%8.8s", xbsd_fstypes[pp->p_fstype].name);
else
- fprintf(f, "%8x", pp->p_fstype);
+ printf("%8x", pp->p_fstype);
switch (pp->p_fstype) {
case BSD_FS_UNUSED:
- fprintf(f, " %5ld %5ld %5.5s ",
+ printf(" %5ld %5ld %5.5s ",
(long) pp->p_fsize, (long) pp->p_fsize * pp->p_frag, "");
break;
case BSD_FS_BSDFFS:
- fprintf(f, " %5ld %5ld %5d ",
+ printf(" %5ld %5ld %5d ",
(long) pp->p_fsize, (long) pp->p_fsize * pp->p_frag,
pp->p_cpg);
break;
default:
- fprintf(f, "%22.22s", "");
+ printf("%22.22s", "");
break;
}
- fprintf(f, "\n");
+ printf("\n");
}
}
}
@@ -1550,9 +1554,8 @@ xbsd_dkcksum (struct xbsd_disklabel *lp) {
static int
xbsd_initlabel (struct partition *p, struct xbsd_disklabel *d, int pindex) {
struct xbsd_partition *pp;
- struct geom g;
- get_geometry (&g);
+ get_geometry ();
bzero (d, sizeof (struct xbsd_disklabel));
d -> d_magic = BSD_DISKMAGIC;
@@ -1572,10 +1575,10 @@ xbsd_initlabel (struct partition *p, struct xbsd_disklabel *d, int pindex) {
d -> d_flags = 0;
#endif
d -> d_secsize = SECTOR_SIZE; /* bytes/sector */
- d -> d_nsectors = g.sectors; /* sectors/track */
- d -> d_ntracks = g.heads; /* tracks/cylinder (heads) */
- d -> d_ncylinders = g.cylinders;
- d -> d_secpercyl = g.sectors * g.heads;/* sectors/cylinder */
+ d -> d_nsectors = sectors; /* sectors/track */
+ d -> d_ntracks = heads; /* tracks/cylinder (heads) */
+ d -> d_ncylinders = cylinders;
+ d -> d_secpercyl = sectors * heads;/* sectors/cylinder */
if (d -> d_secpercyl == 0)
d -> d_secpercyl = 1; /* avoid segfaults */
d -> d_secperunit = d -> d_secpercyl * d -> d_ncylinders;
@@ -1957,7 +1960,6 @@ static void
sgi_list_table( int xtra ) {
int i, w;
int kpi = 0; /* kernel partition ID */
- const char *type;
w = strlen( disk_device );
@@ -1998,8 +2000,7 @@ sgi_list_table( int xtra ) {
/* end */ (long) scround(start+len)-1,
/* no odd flag on end */ (long) len,
/* type id */ sgi_get_sysid(i),
-/* type name */ (type = partition_type(sgi_get_sysid(i)))
- ? type : _("Unknown"));
+/* type name */ partition_type(sgi_get_sysid(i)));
}
}
printf(_("----- Bootinfo -----\nBootfile: %s\n"
@@ -3192,7 +3193,6 @@ sun_change_sysid(int i, int sys) {
static void
sun_list_table(int xtra) {
int i, w;
- const char *type;
w = strlen(disk_device);
if (xtra)
@@ -3231,8 +3231,7 @@ sun_list_table(int xtra) {
/* end */ (long) scround(start+len),
/* odd flag on end */ (long) len / 2, len & 1 ? '+' : ' ',
/* type id */ sunlabel->infos[i].id,
-/* type name */ (type = partition_type(sunlabel->infos[i].id))
- ? type : _("Unknown"));
+/* type name */ partition_type(sunlabel->infos[i].id));
}
}
}
@@ -3297,52 +3296,27 @@ sun_write_table(void) {
static const struct systypes i386_sys_types[] = {
{"\x00" "Empty"},
{"\x01" "FAT12"},
- {"\x02" "XENIX root"},
- {"\x03" "XENIX usr"},
{"\x04" "FAT16 <32M"},
{"\x05" "Extended"}, /* DOS 3.3+ extended partition */
{"\x06" "FAT16"}, /* DOS 16-bit >=32M */
{"\x07" "HPFS/NTFS"}, /* OS/2 IFS, eg, HPFS or NTFS or QNX */
- {"\x08" "AIX"}, /* AIX boot (AIX -- PS/2 port) or SplitDrive */
- {"\x09" "AIX bootable"}, /* AIX data or Coherent */
{"\x0a" "OS/2 Boot Manager"},/* OS/2 Boot Manager */
{"\x0b" "Win95 FAT32"},
{"\x0c" "Win95 FAT32 (LBA)"},/* LBA really is `Extended Int 13h' */
{"\x0e" "Win95 FAT16 (LBA)"},
{"\x0f" "Win95 Ext'd (LBA)"},
- {"\x10" "OPUS"},
{"\x11" "Hidden FAT12"},
{"\x12" "Compaq diagnostics"},
{"\x14" "Hidden FAT16 <32M"},
{"\x16" "Hidden FAT16"},
{"\x17" "Hidden HPFS/NTFS"},
- {"\x18" "AST SmartSleep"},
{"\x1b" "Hidden Win95 FAT32"},
{"\x1c" "Hidden Win95 FAT32 (LBA)"},
{"\x1e" "Hidden Win95 FAT16 (LBA)"},
- {"\x24" "NEC DOS"},
- {"\x39" "Plan 9"},
{"\x3c" "PartitionMagic recovery"},
- {"\x40" "Venix 80286"},
{"\x41" "PPC PReP Boot"},
{"\x42" "SFS"},
- {"\x4d" "QNX4.x"},
- {"\x4e" "QNX4.x 2nd part"},
- {"\x4f" "QNX4.x 3rd part"},
- {"\x50" "OnTrack DM"},
- {"\x51" "OnTrack DM6 Aux1"}, /* (or Novell) */
- {"\x52" "CP/M"}, /* CP/M or Microport SysV/AT */
- {"\x53" "OnTrack DM6 Aux3"},
- {"\x54" "OnTrackDM6"},
- {"\x55" "EZ-Drive"},
- {"\x56" "Golden Bow"},
- {"\x5c" "Priam Edisk"},
- {"\x61" "SpeedStor"},
{"\x63" "GNU HURD or SysV"}, /* GNU HURD or Mach or Sys V/386 (such as ISC UNIX) */
- {"\x64" "Novell Netware 286"},
- {"\x65" "Novell Netware 386"},
- {"\x70" "DiskSecure Multi-Boot"},
- {"\x75" "PC/IX"},
{"\x80" "Old Minix"}, /* Minix 1.4a and earlier */
{"\x81" "Minix / old Linux"},/* Minix 1.4b and later */
{"\x82" "Linux swap"}, /* also Solaris */
@@ -3352,20 +3326,54 @@ static const struct systypes i386_sys_types[] = {
{"\x86" "NTFS volume set"},
{"\x87" "NTFS volume set"},
{"\x8e" "Linux LVM"},
- {"\x93" "Amoeba"},
- {"\x94" "Amoeba BBT"}, /* (bad block table) */
{"\x9f" "BSD/OS"}, /* BSDI */
{"\xa0" "IBM Thinkpad hibernation"},
{"\xa5" "FreeBSD"}, /* various BSD flavours */
{"\xa6" "OpenBSD"},
- {"\xa7" "NeXTSTEP"},
{"\xa8" "Darwin UFS"},
{"\xa9" "NetBSD"},
{"\xab" "Darwin boot"},
{"\xb7" "BSDI fs"},
{"\xb8" "BSDI swap"},
- {"\xbb" "Boot Wizard hidden"},
{"\xbe" "Solaris boot"},
+ {"\xeb" "BeOS fs"},
+ {"\xee" "EFI GPT"}, /* Intel EFI GUID Partition Table */
+ {"\xef" "EFI (FAT-12/16/32)"},/* Intel EFI System Partition */
+ {"\xf0" "Linux/PA-RISC boot"},/* Linux/PA-RISC boot loader */
+ {"\xf2" "DOS secondary"}, /* DOS 3.3+ secondary */
+ {"\xfd" "Linux raid autodetect"},/* New (2.2.x) raid partition with
+ autodetect using persistent
+ superblock */
+#ifdef CONFIG_WEIRD_PARTITION_TYPES
+ {"\x02" "XENIX root"},
+ {"\x03" "XENIX usr"},
+ {"\x08" "AIX"}, /* AIX boot (AIX -- PS/2 port) or SplitDrive */
+ {"\x09" "AIX bootable"}, /* AIX data or Coherent */
+ {"\x10" "OPUS"},
+ {"\x18" "AST SmartSleep"},
+ {"\x24" "NEC DOS"},
+ {"\x39" "Plan 9"},
+ {"\x40" "Venix 80286"},
+ {"\x4d" "QNX4.x"},
+ {"\x4e" "QNX4.x 2nd part"},
+ {"\x4f" "QNX4.x 3rd part"},
+ {"\x50" "OnTrack DM"},
+ {"\x51" "OnTrack DM6 Aux1"}, /* (or Novell) */
+ {"\x52" "CP/M"}, /* CP/M or Microport SysV/AT */
+ {"\x53" "OnTrack DM6 Aux3"},
+ {"\x54" "OnTrackDM6"},
+ {"\x55" "EZ-Drive"},
+ {"\x56" "Golden Bow"},
+ {"\x5c" "Priam Edisk"},
+ {"\x61" "SpeedStor"},
+ {"\x64" "Novell Netware 286"},
+ {"\x65" "Novell Netware 386"},
+ {"\x70" "DiskSecure Multi-Boot"},
+ {"\x75" "PC/IX"},
+ {"\x93" "Amoeba"},
+ {"\x94" "Amoeba BBT"}, /* (bad block table) */
+ {"\xa7" "NeXTSTEP"},
+ {"\xbb" "Boot Wizard hidden"},
{"\xc1" "DRDOS/sec (FAT-12)"},
{"\xc4" "DRDOS/sec (FAT-16 < 32M)"},
{"\xc6" "DRDOS/sec (FAT-16)"},
@@ -3380,23 +3388,15 @@ static const struct systypes i386_sys_types[] = {
{"\xe3" "DOS R/O"}, /* DOS R/O or SpeedStor */
{"\xe4" "SpeedStor"}, /* SpeedStor 16-bit FAT extended
partition < 1024 cyl. */
- {"\xeb" "BeOS fs"},
- {"\xee" "EFI GPT"}, /* Intel EFI GUID Partition Table */
- {"\xef" "EFI (FAT-12/16/32)"},/* Intel EFI System Partition */
- {"\xf0" "Linux/PA-RISC boot"},/* Linux/PA-RISC boot loader */
{"\xf1" "SpeedStor"},
{"\xf4" "SpeedStor"}, /* SpeedStor large partition */
- {"\xf2" "DOS secondary"}, /* DOS 3.3+ secondary */
- {"\xfd" "Linux raid autodetect"},/* New (2.2.x) raid partition with
- autodetect using persistent
- superblock */
{"\xfe" "LANstep"}, /* SpeedStor >1024 cyl. or LANstep */
{"\xff" "BBT"}, /* Xenix Bad Block Table */
+#endif
{ 0 }
};
-static void delete_partition(int i);
/* A valid partition table sector ends in 0x55 0xaa */
static unsigned int
@@ -3404,11 +3404,8 @@ part_table_flag(const char *b) {
return ((uint) b[510]) + (((uint) b[511]) << 8);
}
-static int
-valid_part_table_flag(const unsigned char *b) {
- return (b[510] == 0x55 && b[511] == 0xaa);
-}
+#ifdef CONFIG_FEATURE_FDISK_WRITABLE
static void
write_part_table_flag(char *b) {
b[510] = 0x55;
@@ -3424,6 +3421,7 @@ store4_little_endian(unsigned char *cp, unsigned int val) {
cp[2] = ((val >> 16) & 0xff);
cp[3] = ((val >> 24) & 0xff);
}
+#endif /* CONFIG_FEATURE_FDISK_WRITABLE */
static unsigned int
read4_little_endian(const unsigned char *cp) {
@@ -3431,20 +3429,24 @@ read4_little_endian(const unsigned char *cp) {
+ ((uint)(cp[2]) << 16) + ((uint)(cp[3]) << 24);
}
+#ifdef CONFIG_FEATURE_FDISK_WRITABLE
static void
set_start_sect(struct partition *p, unsigned int start_sect) {
store4_little_endian(p->start4, start_sect);
}
+#endif
static unsigned int
get_start_sect(const struct partition *p) {
return read4_little_endian(p->start4);
}
+#ifdef CONFIG_FEATURE_FDISK_WRITABLE
static void
set_nr_sects(struct partition *p, unsigned int nr_sects) {
store4_little_endian(p->size4, nr_sects);
}
+#endif
static unsigned int
get_nr_sects(const struct partition *p) {
@@ -3457,9 +3459,12 @@ static int type_open = O_RDWR;
static int ext_index, /* the prime extended partition */
listing, /* no aborts for fdisk -l */
- nowarn, /* no warnings for fdisk -l/-s */
- dos_compatible_flag = ~0,
- dos_changed;
+ dos_compatible_flag = ~0;
+#ifdef CONFIG_FEATURE_FDISK_WRITABLE
+static int dos_changed;
+static int nowarn; /* no warnings for fdisk -l/-s */
+#endif
+
static uint user_cylinders, user_heads, user_sectors;
@@ -3516,29 +3521,27 @@ seek_sector(uint secno) {
fdisk_fatal(unable_to_seek);
}
-static void
-read_sector(uint secno, char *buf) {
- seek_sector(secno);
- if (read(fd, buf, sector_size) != sector_size)
- fdisk_fatal(unable_to_read);
-}
-
+#ifdef CONFIG_FEATURE_FDISK_WRITABLE
static void
write_sector(uint secno, char *buf) {
seek_sector(secno);
if (write(fd, buf, sector_size) != sector_size)
fdisk_fatal(unable_to_write);
}
+#endif
/* Allocate a buffer and read a partition table sector */
static void
-read_pte(int pno, uint offset) {
- struct pte *pe = &ptes[pno];
+read_pte(struct pte *pe, uint offset) {
pe->offset = offset;
pe->sectorbuffer = (char *) xmalloc(sector_size);
- read_sector(offset, pe->sectorbuffer);
+ seek_sector(offset);
+ if (read(fd, pe->sectorbuffer, sector_size) != sector_size)
+ fdisk_fatal(unable_to_read);
+#ifdef CONFIG_FEATURE_FDISK_WRITABLE
pe->changed = 0;
+#endif
pe->part_table = pe->ext_pointer = NULL;
}
@@ -3547,6 +3550,7 @@ get_partition_start(const struct pte *pe) {
return pe->offset + get_start_sect(pe->part_table);
}
+#ifdef CONFIG_FEATURE_FDISK_WRITABLE
/*
* Avoid warning about DOS partitions when no DOS partition was changed.
* Here a heuristic "is probably dos partition".
@@ -3638,6 +3642,8 @@ menu(void) {
#endif
}
}
+#endif /* CONFIG_FEATURE_FDISK_WRITABLE */
+
#ifdef CONFIG_FEATURE_FDISK_ADVANCED
static void
@@ -3720,19 +3726,7 @@ xmenu(void) {
}
#endif /* ADVANCED mode */
-
-static int
-get_sysid(int i) {
- return (
-#ifdef CONFIG_FEATURE_SUN_LABEL
- sun_label ? sunlabel->infos[i].id :
-#endif
-#ifdef CONFIG_FEATURE_SGI_LABEL
- sgi_label ? sgi_get_sysid(i) :
-#endif
- ptes[i].part_table->sys_ind);
-}
-
+#ifdef CONFIG_FEATURE_FDISK_WRITABLE
static const struct systypes *
get_sys_types(void) {
return (
@@ -3744,6 +3738,9 @@ get_sys_types(void) {
#endif
i386_sys_types);
}
+#else
+#define get_sys_types() i386_sys_types
+#endif /* CONFIG_FEATURE_FDISK_WRITABLE */
static const char *partition_type(unsigned char type)
{
@@ -3754,7 +3751,21 @@ static const char *partition_type(unsigned char type)
if (types[i].name[0] == type)
return types[i].name + 1;
- return NULL;
+ return _("Unknown");
+}
+
+
+#ifdef CONFIG_FEATURE_FDISK_WRITABLE
+static int
+get_sysid(int i) {
+ return (
+#ifdef CONFIG_FEATURE_SUN_LABEL
+ sun_label ? sunlabel->infos[i].id :
+#endif
+#ifdef CONFIG_FEATURE_SGI_LABEL
+ sgi_label ? sgi_get_sysid(i) :
+#endif
+ ptes[i].part_table->sys_ind);
}
void list_types(const struct systypes *sys)
@@ -3771,7 +3782,7 @@ void list_types(const struct systypes *sys)
do {
printf("%c%2x %-15.15s", i ? ' ' : '\n',
- sys[next].name[0], sys[next].name + 1);
+ sys[next].name[0], partition_type(sys[next].name[0]));
next = last[i++] + done;
if (i > 3 || next >= last[i]) {
i = 0;
@@ -3780,6 +3791,7 @@ void list_types(const struct systypes *sys)
} while (done < last[0]);
putchar('\n');
}
+#endif /* CONFIG_FEATURE_FDISK_WRITABLE */
static int
is_cleared_partition(const struct partition *p) {
@@ -3792,18 +3804,10 @@ static void
clear_partition(struct partition *p) {
if (!p)
return;
- p->boot_ind = 0;
- p->head = 0;
- p->sector = 0;
- p->cyl = 0;
- p->sys_ind = 0;
- p->end_head = 0;
- p->end_sector = 0;
- p->end_cyl = 0;
- set_start_sect(p,0);
- set_nr_sects(p,0);
+ memset(p, 0, sizeof(struct partition));
}
+#ifdef CONFIG_FEATURE_FDISK_WRITABLE
static void
set_partition(int i, int doext, uint start, uint stop, int sysid) {
struct partition *p;
@@ -3828,6 +3832,7 @@ set_partition(int i, int doext, uint start, uint stop, int sysid) {
set_hsc(p->end_head, p->end_sector, p->end_cyl, stop);
ptes[i].changed = 1;
}
+#endif
static int
test_c(const char **m, const char *mesg) {
@@ -3855,9 +3860,13 @@ warn_geometry(void) {
prev = test_c(&m, _("cylinders"));
if (!m)
return 0;
- fprintf(stderr,
- _("%s%s.\nYou can do this from the extra functions menu.\n"),
- prev ? _(" and ") : " ", m);
+
+ fprintf(stderr, "%s%s.\n"
+#ifdef CONFIG_FEATURE_FDISK_WRITABLE
+ "You can do this from the extra functions menu.\n"
+#endif
+ , prev ? _(" and ") : " ", m);
+
return 1;
}
@@ -3871,6 +3880,7 @@ static void update_units(void)
units_per_sector = 1; /* in sectors */
}
+#ifdef CONFIG_FEATURE_FDISK_WRITABLE
static void
warn_cylinders(void) {
if (dos_label && cylinders > 1024 && !nowarn)
@@ -3883,6 +3893,7 @@ warn_cylinders(void) {
" (e.g., DOS FDISK, OS/2 FDISK)\n"),
cylinders);
}
+#endif
static void
read_extended(int ext) {
@@ -3909,16 +3920,17 @@ read_extended(int ext) {
this program uses arrays of size MAXIMUM_PARTS.
Do not try to `improve' this test. */
struct pte *pre = &ptes[partitions-1];
-
+#ifdef CONFIG_FEATURE_FDISK_WRITABLE
fprintf(stderr,
_("Warning: deleting partitions after %d\n"),
partitions);
- clear_partition(pre->ext_pointer);
pre->changed = 1;
+#endif
+ clear_partition(pre->ext_pointer);
return;
}
- read_pte(partitions, extended_offset + get_start_sect(p));
+ read_pte(pe, extended_offset + get_start_sect(p));
if (!extended_offset)
extended_offset = get_start_sect(p);
@@ -3962,6 +3974,7 @@ read_extended(int ext) {
partitions++;
}
+#ifdef CONFIG_FEATURE_FDISK_WRITABLE
/* remove empty links */
remove:
for (i = 4; i < partitions; i++) {
@@ -3974,8 +3987,10 @@ read_extended(int ext) {
goto remove; /* numbering changed */
}
}
+#endif
}
+#ifdef CONFIG_FEATURE_FDISK_WRITABLE
static void
create_doslabel(void) {
int i;
@@ -4007,7 +4022,7 @@ create_doslabel(void) {
set_changed(0);
get_boot(create_empty_dos);
}
-
+#endif /* CONFIG_FEATURE_FDISK_WRITABLE */
static void
get_sectorsize(void) {
@@ -4022,7 +4037,7 @@ get_sectorsize(void) {
}
}
-static void
+static inline void
get_kernel_geometry(void) {
struct hd_geometry geometry;
@@ -4035,7 +4050,7 @@ get_kernel_geometry(void) {
static void
get_partition_table_geometry(void) {
- unsigned char *bufp = MBRbuffer;
+ const unsigned char *bufp = MBRbuffer;
struct partition *p;
int i, h, s, hh, ss;
int first = 1;
@@ -4066,7 +4081,7 @@ get_partition_table_geometry(void) {
}
void
-get_geometry(struct geom *g) {
+get_geometry(void) {
int sec_fac;
unsigned long longsectors;
@@ -4101,12 +4116,6 @@ get_geometry(struct geom *g) {
if (!cylinders)
cylinders = user_cylinders;
- if (g) {
- g->heads = heads;
- g->sectors = sectors;
- g->cylinders = cylinders;
- }
-
total_number_of_sectors = longsectors;
}
@@ -4129,14 +4138,19 @@ get_boot(enum action what) {
pe->ext_pointer = NULL;
pe->offset = 0;
pe->sectorbuffer = MBRbuffer;
+#ifdef CONFIG_FEATURE_FDISK_WRITABLE
pe->changed = (what == create_empty_dos);
+#endif
}
+#ifdef CONFIG_FEATURE_SUN_LABEL
if (what == create_empty_sun && check_sun_label())
return 0;
+#endif
memset(MBRbuffer, 0, 512);
+#ifdef CONFIG_FEATURE_FDISK_WRITABLE
if (what == create_empty_dos)
goto got_dos_table; /* skip reading disk */
@@ -4155,13 +4169,21 @@ get_boot(enum action what) {
return 1;
fdisk_fatal(unable_to_read);
}
+#else
+ if ((fd = open(disk_device, O_RDONLY)) < 0)
+ return 1;
+ if (512 != read(fd, MBRbuffer, 512))
+ return 1;
+#endif
- get_geometry(NULL);
+ get_geometry();
update_units();
+#ifdef CONFIG_FEATURE_SUN_LABEL
if (check_sun_label())
return 0;
+#endif
#ifdef CONFIG_FEATURE_SGI_LABEL
if (check_sgi_label())
@@ -4185,9 +4207,14 @@ get_boot(enum action what) {
}
#endif
+#ifdef CONFIG_FEATURE_FDISK_WRITABLE
got_dos_table:
+#endif
if (!valid_part_table_flag(MBRbuffer)) {
+#ifndef CONFIG_FEATURE_FDISK_WRITABLE
+ return -1;
+#else
switch(what) {
case fdisk:
fprintf(stderr,
@@ -4202,20 +4229,23 @@ got_dos_table:
create_doslabel();
#endif
return 0;
- case require:
- return -1;
case try_only:
return -1;
case create_empty_dos:
+#ifdef CONFIG_FEATURE_SUN_LABEL
case create_empty_sun:
+#endif
break;
default:
fprintf(stderr, _("Internal error\n"));
exit(1);
}
+#endif /* CONFIG_FEATURE_FDISK_WRITABLE */
}
+#ifdef CONFIG_FEATURE_FDISK_WRITABLE
warn_cylinders();
+#endif
warn_geometry();
for (i = 0; i < 4; i++) {
@@ -4238,13 +4268,16 @@ got_dos_table:
_("Warning: invalid flag 0x%04x of partition "
"table %d will be corrected by w(rite)\n"),
part_table_flag(pe->sectorbuffer), i + 1);
+#ifdef CONFIG_FEATURE_FDISK_WRITABLE
pe->changed = 1;
+#endif
}
}
return 0;
}
+#ifdef CONFIG_FEATURE_FDISK_WRITABLE
/*
* Print the message MESG, then read an integer between LOW and HIGH (inclusive).
* If the user hits Enter, DFLT is returned.
@@ -4525,7 +4558,6 @@ delete_partition(int i) {
static void
change_sysid(void) {
- const char *temp;
int i, sys, origsys;
struct partition *p;
@@ -4590,8 +4622,7 @@ change_sysid(void) {
p->sys_ind = sys;
printf (_("Changed system type of partition %d "
"to %x (%s)\n"), i + 1, sys,
- (temp = partition_type(sys)) ? temp :
- _("Unknown"));
+ partition_type(sys));
ptes[i].changed = 1;
if (is_dos_partition(origsys) ||
is_dos_partition(sys))
@@ -4600,6 +4631,8 @@ change_sysid(void) {
}
}
}
+#endif /* CONFIG_FEATURE_FDISK_WRITABLE */
+
/* check_consistency() and long2chs() added Sat Mar 6 12:28:16 1993,
* faith@cs.unc.edu, based on code fragments from pfdisk by Gordon W. Ross,
@@ -4694,8 +4727,7 @@ list_disk_geometry(void) {
if (units_per_sector == 1)
printf(_(", total %lu sectors"),
total_number_of_sectors / (sector_size/512));
- printf("\n");
- printf(_("Units = %s of %d * %d = %d bytes\n\n"),
+ printf(_("\nUnits = %s of %d * %d = %d bytes\n\n"),
str_units(PLURAL),
units_per_sector, sector_size, units_per_sector * sector_size);
}
@@ -4799,7 +4831,6 @@ fix_chain_of_logicals(void) {
}
-
static void
fix_partition_table_order(void) {
struct pte *pei, *pek;
@@ -4842,7 +4873,6 @@ fix_partition_table_order(void) {
static void
list_table(int xtra) {
const struct partition *p;
- const char *type;
int i, w;
#ifdef CONFIG_FEATURE_SUN_LABEL
@@ -4905,8 +4935,7 @@ list_table(int xtra) {
- (psects ? 1 : 0)),
/* odd flag on end */ (long) pblocks, podd ? '+' : ' ',
/* type id */ p->sys_ind,
-/* type name */ (type = partition_type(p->sys_ind)) ?
- type : _("Unknown"));
+/* type name */ partition_type(p->sys_ind));
check_consistency(p, i);
}
}
@@ -4947,6 +4976,7 @@ x_list_table(int extend) {
}
#endif
+#ifdef CONFIG_FEATURE_FDISK_WRITABLE
static void
fill_bounds(uint *first, uint *last) {
int i;
@@ -5362,6 +5392,7 @@ reread_partition_table(int leave) {
exit(!!i);
}
}
+#endif /* CONFIG_FEATURE_FDISK_WRITABLE */
#ifdef CONFIG_FEATURE_FDISK_ADVANCED
#define MAX_PER_LINE 16
@@ -5600,8 +5631,10 @@ try(const char *device, int user_specified) {
} else {
close(fd);
list_table(0);
+#ifdef CONFIG_FEATURE_FDISK_WRITABLE
if (!sun_label && partitions > 4)
delete_partition(ext_index);
+#endif
}
} else {
/* Ignore other errors, since we try IDE
@@ -5631,21 +5664,29 @@ tryprocpt(void) {
for (s = ptname; *s; s++);
if (isdigit(s[-1]))
continue;
- snprintf(devname, sizeof(devname), "/dev/%s", ptname);
+ sprintf(devname, "/dev/%s", ptname);
try(devname, 0);
}
+#ifdef CONFIG_FEATURE_CLEAN_UP
fclose(procpt);
+#endif
}
+#ifdef CONFIG_FEATURE_FDISK_WRITABLE
static void
unknown_command(int c) {
printf(_("%c: unknown command\n"), c);
}
+#endif
int fdisk_main(int argc, char **argv) {
- int j, c;
- int optl = 0, opts = 0;
-
+ int c;
+#ifdef CONFIG_FEATURE_FDISK_WRITABLE
+ int optl = 0;
+#endif
+#ifdef CONFIG_FEATURE_FDISK_BLKSIZE
+ int opts = 0;
+#endif
/*
* Calls:
* fdisk -v
@@ -5656,7 +5697,11 @@ int fdisk_main(int argc, char **argv) {
* Options -C, -H, -S set the geometry.
*
*/
- while ((c = getopt(argc, argv, "b:C:H:lsS:uvV")) != -1) {
+ while ((c = getopt(argc, argv, "b:C:H:lS:uvV"
+#ifdef CONFIG_FEATURE_FDISK_BLKSIZE
+ "s"
+#endif
+ )) != -1) {
switch (c) {
case 'b':
/* Ugly: this sector size is really per device,
@@ -5684,11 +5729,15 @@ int fdisk_main(int argc, char **argv) {
user_sectors = 0;
break;
case 'l':
+#ifdef CONFIG_FEATURE_FDISK_WRITABLE
optl = 1;
+#endif
break;
+#ifdef CONFIG_FEATURE_FDISK_BLKSIZE
case 's':
opts = 1;
break;
+#endif
case 'u':
display_in_cyl_units = 0;
break;
@@ -5710,8 +5759,10 @@ int fdisk_main(int argc, char **argv) {
" be used with one specified device\n"));
#endif
+#ifdef CONFIG_FEATURE_FDISK_WRITABLE
if (optl) {
nowarn = 1;
+#endif
type_open = O_RDONLY;
if (argc > optind) {
int k;
@@ -5729,10 +5780,14 @@ int fdisk_main(int argc, char **argv) {
tryprocpt();
}
return 0;
+#ifdef CONFIG_FEATURE_FDISK_WRITABLE
}
+#endif
+#ifdef CONFIG_FEATURE_FDISK_BLKSIZE
if (opts) {
long size;
+ int j;
nowarn = 1;
type_open = O_RDONLY;
@@ -5755,7 +5810,9 @@ int fdisk_main(int argc, char **argv) {
}
return 0;
}
+#endif
+#ifdef CONFIG_FEATURE_FDISK_WRITABLE
if (argc-optind == 1)
disk_device = argv[optind];
else
@@ -5828,9 +5885,11 @@ int fdisk_main(int argc, char **argv) {
unknown_command(c);
break;
case 'd':
- j = get_existing_partition(1, partitions);
- if (j >= 0)
- delete_partition(j);
+ {
+ int j = get_existing_partition(1, partitions);
+ if (j >= 0)
+ delete_partition(j);
+ }
break;
case 'i':
#ifdef CONFIG_FEATURE_SGI_LABEL
@@ -5894,4 +5953,5 @@ int fdisk_main(int argc, char **argv) {
}
}
return 0;
+#endif /* CONFIG_FEATURE_FDISK_WRITABLE */
}
generated by cgit v1.1 at 2024-12-27 21:48:49 +0000