diff options
| -rw-r--r-- | util-linux/fdisk.c | 352 |
1 files changed, 177 insertions, 175 deletions
diff --git a/util-linux/fdisk.c b/util-linux/fdisk.c index 493c674..9d7bd4e 100644 --- a/util-linux/fdisk.c +++ b/util-linux/fdisk.c @@ -16,6 +16,8 @@ # define USE_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 */ @@ -32,14 +34,6 @@ #define LINUX_LVM 0x8e #define LINUX_RAID 0xfd -#define IS_EXTENDED(i) \ - ((i) == EXTENDED || (i) == WIN98_EXTENDED || (i) == LINUX_EXTENDED) - -#define SIZE(a) (sizeof(a)/sizeof((a)[0])) - -#define cround(n) (display_in_cyl_units ? ((n)/units_per_sector)+1 : (n)) -#define scround(x) (((x)+units_per_sector-1)/units_per_sector) - struct hd_geometry { unsigned char heads; unsigned char sectors; @@ -91,6 +85,7 @@ enum failure { enum label_type { label_dos, label_sun, label_sgi, label_aix, label_osf }; + #define LABEL_IS_DOS (label_dos == current_label_type) #if ENABLE_FEATURE_SUN_LABEL @@ -150,30 +145,6 @@ static int get_boot(enum action what); #define PLURAL 0 #define SINGULAR 1 -#define hex_val(c) ({ \ - char _c = (c); \ - isdigit(_c) ? _c - '0' : \ - tolower(_c) + 10 - 'a'; \ - }) - -#define LINE_LENGTH 80 -#define pt_offset(b, n) ((struct partition *)((b) + 0x1be + \ - (n) * sizeof(struct partition))) -#define sector(s) ((s) & 0x3f) -#define cylinder(s, c) ((c) | (((s) & 0xc0) << 2)) - -#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) - static unsigned get_start_sect(const struct partition *p); static unsigned get_nr_sects(const struct partition *p); @@ -188,25 +159,190 @@ static unsigned get_nr_sects(const struct partition *p); struct pte { struct partition *part_table; /* points into sectorbuffer */ struct partition *ext_pointer; /* points into sectorbuffer */ + off_t offset; /* disk sector number */ + char *sectorbuffer; /* disk sector contents */ #if ENABLE_FEATURE_FDISK_WRITABLE char changed; /* boolean */ #endif - off_t offset; /* disk sector number */ - char *sectorbuffer; /* disk sector contents */ }; +/* DOS partition types */ + +static const char *const i386_sys_types[] = { + "\x00" "Empty", + "\x01" "FAT12", + "\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 */ + "\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)", + "\x11" "Hidden FAT12", + "\x12" "Compaq diagnostics", + "\x14" "Hidden FAT16 <32M", + "\x16" "Hidden FAT16", + "\x17" "Hidden HPFS/NTFS", + "\x1b" "Hidden Win95 FAT32", + "\x1c" "Hidden W95 FAT32 (LBA)", + "\x1e" "Hidden W95 FAT16 (LBA)", + "\x3c" "Part.Magic recovery", + "\x41" "PPC PReP Boot", + "\x42" "SFS", + "\x63" "GNU HURD or SysV", /* GNU HURD or Mach or Sys V/386 (such as ISC UNIX) */ + "\x80" "Old Minix", /* Minix 1.4a and earlier */ + "\x81" "Minix / old Linux",/* Minix 1.4b and later */ + "\x82" "Linux swap", /* also Solaris */ + "\x83" "Linux", + "\x84" "OS/2 hidden C: drive", + "\x85" "Linux extended", + "\x86" "NTFS volume set", + "\x87" "NTFS volume set", + "\x8e" "Linux LVM", + "\x9f" "BSD/OS", /* BSDI */ + "\xa0" "Thinkpad hibernation", + "\xa5" "FreeBSD", /* various BSD flavours */ + "\xa6" "OpenBSD", + "\xa8" "Darwin UFS", + "\xa9" "NetBSD", + "\xab" "Darwin boot", + "\xb7" "BSDI fs", + "\xb8" "BSDI swap", + "\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 */ +#if 0 /* ENABLE_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)", + "\xc7" "Syrinx", + "\xda" "Non-FS data", + "\xdb" "CP/M / CTOS / ...",/* CP/M or Concurrent CP/M or + Concurrent DOS or CTOS */ + "\xde" "Dell Utility", /* Dell PowerEdge Server utilities */ + "\xdf" "BootIt", /* BootIt EMBRM */ + "\xe1" "DOS access", /* DOS access or SpeedStor 12-bit FAT + extended partition */ + "\xe3" "DOS R/O", /* DOS R/O or SpeedStor */ + "\xe4" "SpeedStor", /* SpeedStor 16-bit FAT extended + partition < 1024 cyl. */ + "\xf1" "SpeedStor", + "\xf4" "SpeedStor", /* SpeedStor large partition */ + "\xfe" "LANstep", /* SpeedStor >1024 cyl. or LANstep */ + "\xff" "BBT", /* Xenix Bad Block Table */ +#endif + NULL +}; + + +/* Globals */ + struct globals { + char *line_ptr; + 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 partname_buffer (G.partname_buffer) +#define MBRbuffer (G.MBRbuffer) +#define ptes (G.ptes) + + +/* Code */ + +#define IS_EXTENDED(i) \ + ((i) == EXTENDED || (i) == WIN98_EXTENDED || (i) == LINUX_EXTENDED) -#define G (*(struct globals*)bb_common_bufsiz1) -#define MBRbuffer (G.MBRbuffer) -#define ptes (G.ptes) +#define cround(n) (display_in_cyl_units ? ((n)/units_per_sector)+1 : (n)) + +#define scround(x) (((x)+units_per_sector-1)/units_per_sector) +#define pt_offset(b, n) \ + ((struct partition *)((b) + 0x1be + (n) * sizeof(struct partition))) + +#define sector(s) ((s) & 0x3f) + +#define cylinder(s, c) ((c) | (((s) & 0xc0) << 2)) + +#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) + +/* read line; return 0 or first printable char */ +static int +read_line(const char *prompt) +{ + 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; +} /* * return partition name - uses static storage @@ -214,14 +350,13 @@ struct globals { static const char * partname(const char *dev, int pno, int lth) { - static char buffer[80]; const char *p; int w, wp; int bufsiz; char *bufp; - bufp = buffer; - bufsiz = sizeof(buffer); + bufp = partname_buffer; + bufsiz = sizeof(partname_buffer); w = strlen(dev); p = ""; @@ -292,28 +427,6 @@ write_part_table_flag(char *b) b[511] = 0xaa; } -static char line_buffer[LINE_LENGTH]; -static char *line_ptr; - -/* read line; return 0 or first printable char */ -static int -read_line(const char *prompt) -{ - 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; -} - static char read_nonempty(const char *mesg) { @@ -439,112 +552,6 @@ STATIC_SUN void verify_sun(void); STATIC_SUN void sun_write_table(void); #include "fdisk_sun.c" -/* DOS partition types */ - -static const char *const i386_sys_types[] = { - "\x00" "Empty", - "\x01" "FAT12", - "\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 */ - "\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)", - "\x11" "Hidden FAT12", - "\x12" "Compaq diagnostics", - "\x14" "Hidden FAT16 <32M", - "\x16" "Hidden FAT16", - "\x17" "Hidden HPFS/NTFS", - "\x1b" "Hidden Win95 FAT32", - "\x1c" "Hidden W95 FAT32 (LBA)", - "\x1e" "Hidden W95 FAT16 (LBA)", - "\x3c" "Part.Magic recovery", - "\x41" "PPC PReP Boot", - "\x42" "SFS", - "\x63" "GNU HURD or SysV", /* GNU HURD or Mach or Sys V/386 (such as ISC UNIX) */ - "\x80" "Old Minix", /* Minix 1.4a and earlier */ - "\x81" "Minix / old Linux",/* Minix 1.4b and later */ - "\x82" "Linux swap", /* also Solaris */ - "\x83" "Linux", - "\x84" "OS/2 hidden C: drive", - "\x85" "Linux extended", - "\x86" "NTFS volume set", - "\x87" "NTFS volume set", - "\x8e" "Linux LVM", - "\x9f" "BSD/OS", /* BSDI */ - "\xa0" "Thinkpad hibernation", - "\xa5" "FreeBSD", /* various BSD flavours */ - "\xa6" "OpenBSD", - "\xa8" "Darwin UFS", - "\xa9" "NetBSD", - "\xab" "Darwin boot", - "\xb7" "BSDI fs", - "\xb8" "BSDI swap", - "\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 */ -#if 0 /* ENABLE_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)", - "\xc7" "Syrinx", - "\xda" "Non-FS data", - "\xdb" "CP/M / CTOS / ...",/* CP/M or Concurrent CP/M or - Concurrent DOS or CTOS */ - "\xde" "Dell Utility", /* Dell PowerEdge Server utilities */ - "\xdf" "BootIt", /* BootIt EMBRM */ - "\xe1" "DOS access", /* DOS access or SpeedStor 12-bit FAT - extended partition */ - "\xe3" "DOS R/O", /* DOS R/O or SpeedStor */ - "\xe4" "SpeedStor", /* SpeedStor 16-bit FAT extended - partition < 1024 cyl. */ - "\xf1" "SpeedStor", - "\xf4" "SpeedStor", /* SpeedStor large partition */ - "\xfe" "LANstep", /* SpeedStor >1024 cyl. or LANstep */ - "\xff" "BBT", /* Xenix Bad Block Table */ -#endif - NULL -}; - - #if ENABLE_FEATURE_FDISK_WRITABLE /* start_sect and nr_sects are stored little endian on all machines */ /* moreover, they are not aligned correctly */ @@ -615,8 +622,6 @@ static off_t extended_offset; /* offset of link pointers */ static unsigned long long total_number_of_sectors; -static jmp_buf listingbuf; - static void fdisk_fatal(enum failure why) { const char *message; @@ -2379,7 +2384,7 @@ new_partition(void) printf("You must delete some partition and add " "an extended partition first\n"); } else { - char c, line[LINE_LENGTH]; + char c, line[80]; snprintf(line, sizeof(line), "Command action\n" " %s\n" @@ -2761,8 +2766,6 @@ unknown_command(int c) } #endif -void BUG_fdisk_globals_overflow(void); - int fdisk_main(int argc, char **argv); int fdisk_main(int argc, char **argv) { @@ -2786,8 +2789,7 @@ int fdisk_main(int argc, char **argv) OPT_s = (1 << 6) * ENABLE_FEATURE_FDISK_BLKSIZE, }; - if (sizeof(G) > sizeof(bb_common_bufsiz1)) - BUG_fdisk_globals_overflow(); + 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); |