/* vi: set sw=4 ts=4: */ /* fdisk.c -- Partition table manipulator for Linux. * * Copyright (C) 1992 A. V. Le Blanc (LeBlanc@mcc.ac.uk) * Copyright (C) 2001,2002 Vladimir Oleynik (initial bb port) * * Licensed under the GPL v2 or later, see the file LICENSE in this tarball. */ #include /* assert */ #include "busybox.h" #define _(x) x /* 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) #endif #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 EXTENDED 0x05 #define WIN98_EXTENDED 0x0f #define LINUX_PARTITION 0x81 #define LINUX_SWAP 0x82 #define LINUX_NATIVE 0x83 #define LINUX_EXTENDED 0x85 #define LINUX_LVM 0x8e #define LINUX_RAID 0xfd #define 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; unsigned short cylinders; unsigned long start; }; #define HDIO_GETGEO 0x0301 /* get device geometry */ struct systypes { const char *name; }; 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); /* * return partition name - uses static storage unless buf is supplied */ 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); w = strlen(dev); p = ""; if (isdigit(dev[w-1])) p = "p"; /* devfs kludge - note: fdisk partition names are not supposed to equal kernel names, so there is no reason to do this */ if (strcmp(dev + w - 4, "disc") == 0) { w -= 4; p = "part"; } wp = strlen(p); if (lth) { snprintf(bufp, bufsiz, "%*.*s%s%-2u", lth-wp-2, w, dev, p, pno); } else { snprintf(bufp, bufsiz, "%.*s%s%-2u", w, dev, p, pno); } return bufp; } struct partition { unsigned char boot_ind; /* 0x80 - active */ unsigned char head; /* starting head */ unsigned char sector; /* starting sector */ unsigned char cyl; /* starting cylinder */ unsigned char sys_ind; /* What partition type */ unsigned char end_head; /* end head */ unsigned char end_sector; /* end sector */ unsigned char end_cyl; /* end cylinder */ unsigned char start4[4]; /* starting sector counting from 0 */ unsigned char size4[4]; /* nr of sectors in partition */ } ATTRIBUTE_PACKED; enum failure { ioctl_error, unable_to_open, unable_to_read, unable_to_seek, unable_to_write }; 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 #define LABEL_IS_SUN (label_sun == current_label_type) #define STATIC_SUN static #else #define LABEL_IS_SUN 0 #define STATIC_SUN extern #endif #if ENABLE_FEATURE_SGI_LABEL #define LABEL_IS_SGI (label_sgi == current_label_type) #define STATIC_SGI static #else #define LABEL_IS_SGI 0 #define STATIC_SGI extern #endif #if ENABLE_FEATURE_AIX_LABEL #define LABEL_IS_AIX (label_aix == current_label_type) #define STATIC_AIX static #else #define LABEL_IS_AIX 0 #define STATIC_AIX extern #endif #if ENABLE_FEATURE_OSF_LABEL #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 }; static enum label_type current_label_type; 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; #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 void list_types(const struct systypes *sys); static unsigned read_int(unsigned low, unsigned dflt, unsigned high, unsigned base, const 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 #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); /* * 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 */ #if ENABLE_FEATURE_FDISK_WRITABLE char changed; /* boolean */ #endif off_t offset; /* disk sector number */ char *sectorbuffer; /* disk sector contents */ }; struct globals { /* 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]; }; #define G (*(struct globals*)bb_common_bufsiz1) #define MBRbuffer (G.MBRbuffer) #define ptes (G.ptes) #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 ATTRIBUTE_ALWAYS_INLINE void set_changed(int i) { ptes[i].changed = 1; } #endif /* FEATURE_FDISK_WRITABLE */ static ATTRIBUTE_ALWAYS_INLINE struct partition * get_part_table(int i) { return ptes[i].part_table; } static const char * str_units(int n) { /* n==1: use singular */ if (n == 1) return display_in_cyl_units ? _("cylinder") : _("sector"); else return display_in_cyl_units ? _("cylinders") : _("sectors"); } static int valid_part_table_flag(const char *mbuffer) { return (mbuffer[510] == 0x55 && (uint8_t)mbuffer[511] == 0xaa); } #if ENABLE_FEATURE_FDISK_WRITABLE static ATTRIBUTE_ALWAYS_INLINE void write_part_table_flag(char *b) { b[510] = 0x55; 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) { while (!read_line(mesg)) /* repeat */; return *line_ptr; } static char read_maybe_empty(const char *mesg) { if (!read_line(mesg)) { line_ptr = line_buffer; line_ptr[0] = '\n'; line_ptr[1] = '\0'; } return line_ptr[0]; } static int read_hex(const struct systypes *sys) { unsigned long v; while (1) { read_nonempty(_("Hex code (type L to list codes): ")); if (*line_ptr == 'l' || *line_ptr == 'L') { list_types(sys); continue; } v = bb_strtoul(line_ptr, NULL, 16); if (v > 0xff) /* Bad input also triggers this */ continue; return v; } } #endif /* FEATURE_FDISK_WRITABLE */ #include "fdisk_aix.c" typedef struct { unsigned char info[128]; /* Informative text string */ unsigned char spare0[14]; struct sun_info { unsigned char spare1; unsigned char id; unsigned char spare2; unsigned char flags; } infos[8]; unsigned char spare1[246]; /* Boot information etc. */ unsigned short rspeed; /* Disk rotational speed */ unsigned short pcylcount; /* Physical cylinder count */ unsigned short sparecyl; /* extra sects per cylinder */ unsigned char spare2[4]; /* More magic... */ unsigned short ilfact; /* Interleave factor */ unsigned short ncyl; /* Data cylinder count */ unsigned short nacyl; /* Alt. cylinder count */ unsigned short ntrks; /* Tracks per cylinder */ unsigned short nsect; /* Sectors per track */ unsigned char spare3[4]; /* Even more magic... */ struct sun_partinfo { uint32_t start_cylinder; uint32_t num_sectors; } partitions[8]; unsigned short magic; /* Magic number */ unsigned short csum; /* Label xor'd checksum */ } sun_partition; #define sunlabel ((sun_partition *)MBRbuffer) #define SUNOS_SWAP 3 #define SUN_WHOLE_DISK 5 STATIC_OSF void bsd_select(void); STATIC_OSF void xbsd_print_disklabel(int); #include "fdisk_osf.c" #define SGI_VOLHDR 0x00 /* 1 and 2 were used for drive types no longer supported by SGI */ #define SGI_SWAP 0x03 /* 4 and 5 were for filesystem types SGI haven't ever supported on MIPS CPUs */ #define SGI_VOLUME 0x06 #define SGI_EFS 0x07 #define SGI_LVOL 0x08 #define SGI_RLVOL 0x09 #define SGI_XFS 0x0a #define SGI_XFSLOG 0x0b #define SGI_XLV 0x0c #define SGI_XVM 0x0d #define SGI_ENTIRE_DISK SGI_VOLUME #if ENABLE_FEATURE_SGI_LABEL || ENABLE_FEATURE_SUN_LABEL static uint16_t fdisk_swap16(uint16_t x) { return (x << 8) | (x >> 8); } static uint32_t fdisk_swap32(uint32_t x) { return (x << 24) | ((x & 0xFF00) << 8) | ((x & 0xFF0000) >> 8) | (x >> 24); } #endif STATIC_SGI const struct systypes sgi_sys_types[]; STATIC_SGI unsigned sgi_get_num_sectors(int i); STATIC_SGI int sgi_get_sysid(int i); STATIC_SGI void sgi_delete_partition(int i); STATIC_SGI void sgi_change_sysid(int i, int sys); STATIC_SGI void sgi_list_table(int xtra); #if ENABLE_FEATURE_FDISK_ADVANCED STATIC_SGI void sgi_set_xcyl(void); #endif STATIC_SGI int verify_sgi(int verbose); STATIC_SGI void sgi_add_partition(int n, int sys); STATIC_SGI void sgi_set_swappartition(int i); STATIC_SGI const char *sgi_get_bootfile(void); STATIC_SGI void sgi_set_bootfile(const char* aFile); STATIC_SGI void create_sgiinfo(void); STATIC_SGI void sgi_write_table(void); STATIC_SGI void sgi_set_bootpartition(int i); #include "fdisk_sgi.c" STATIC_SUN const struct systypes sun_sys_types[]; STATIC_SUN void sun_delete_partition(int i); STATIC_SUN void sun_change_sysid(int i, int sys); STATIC_SUN void sun_list_table(int xtra); STATIC_SUN void add_sun_partition(int n, int sys); #if ENABLE_FEATURE_FDISK_ADVANCED STATIC_SUN void sun_set_alt_cyl(void); STATIC_SUN void sun_set_ncyl(int cyl); STATIC_SUN void sun_set_xcyl(void); STATIC_SUN void sun_set_ilfact(void); STATIC_SUN void sun_set_rspeed(void); STATIC_SUN void sun_set_pcylcount(void); #endif STATIC_SUN void toggle_sunflags(int i, unsigned char mask); STATIC_SUN void verify_sun(void); STATIC_SUN void sun_write_table(void); #include "fdisk_sun.c" /* DOS partition types */ static const struct systypes 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 { 0 } }; #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 read4_little_endian(const unsigned char *cp) { return cp[0] + (cp[1] << 8) + (cp[2] << 16) + (cp[3] << 24); } #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 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 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 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; if (listing) { close(fd); longjmp(listingbuf, 1); } switch (why) { case unable_to_open: message = "\nUnable to open %s"; break; case unable_to_read: message = "\nUnable to read %s"; break; case unable_to_seek: message = "\nUnable to seek on %s"; break; case unable_to_write: message = "\nUnable to write %s"; break; case ioctl_error: message = "\nBLKGETSIZE ioctl failed on %s"; break; default: message = "\nFatal error"; } bb_error_msg_and_die(message, disk_device); } static void seek_sector(off_t secno) { off_t offset = secno * sector_size; if (lseek(fd, offset, SEEK_SET) == (off_t) -1) fdisk_fatal(unable_to_seek); } #if ENABLE_FEATURE_FDISK_WRITABLE static void write_sector(off_t 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(struct pte *pe, off_t offset) { pe->offset = offset; pe->sectorbuffer = xmalloc(sector_size); seek_sector(offset); if (read(fd, pe->sectorbuffer, sector_size) != sector_size) fdisk_fatal(unable_to_read); #if ENABLE_FEATURE_FDISK_WRITABLE pe->changed = 0; #endif pe->part_table = pe->ext_pointer = NULL; } static unsigned get_partition_start(const struct pte *pe) { return pe->offset + get_start_sect(pe->part_table); } #if ENABLE_FEATURE_FDISK_WRITABLE /* * Avoid warning about DOS partitions when no DOS partition was changed. * Here a heuristic "is probably dos partition". * We might also do the opposite and warn in all cases except * for "is probably nondos partition". */ static int is_dos_partition(int t) { return (t == 1 || t == 4 || t == 6 || t == 0x0b || t == 0x0c || t == 0x0e || t == 0x11 || t == 0x12 || t == 0x14 || t == 0x16 || t == 0x1b || t == 0x1c || t == 0x1e || t == 0x24 || t == 0xc1 || t == 0xc4 || t == 0xc6); } static void menu(void) { puts(_("Command Action")); if (LABEL_IS_SUN) { puts(_("a\ttoggle a read only flag")); /* sun */ puts(_("b\tedit bsd disklabel")); puts(_("c\ttoggle the mountable flag")); /* sun */ puts(_("d\tdelete a partition")); puts(_("l\tlist known partition types")); puts(_("n\tadd a new partition")); 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 */ puts(_("t\tchange a partition's system id")); puts(_("u\tchange display/entry units")); puts(_("v\tverify the partition table")); puts(_("w\twrite table to disk and exit")); #if ENABLE_FEATURE_FDISK_ADVANCED puts(_("x\textra functionality (experts only)")); #endif } else if (LABEL_IS_SGI) { puts(_("a\tselect bootable partition")); /* sgi flavour */ puts(_("b\tedit bootfile entry")); /* sgi */ puts(_("c\tselect sgi swap partition")); /* sgi flavour */ puts(_("d\tdelete a partition")); puts(_("l\tlist known partition types")); puts(_("n\tadd a new partition")); 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 */ puts(_("t\tchange a partition's system id")); puts(_("u\tchange display/entry units")); puts(_("v\tverify the partition table")); puts(_("w\twrite table to disk and exit")); } else if (LABEL_IS_AIX) { 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 { puts(_("a\ttoggle a bootable flag")); puts(_("b\tedit bsd disklabel")); puts(_("c\ttoggle the dos compatibility flag")); puts(_("d\tdelete a partition")); puts(_("l\tlist known partition types")); puts(_("n\tadd a new partition")); 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 */ puts(_("t\tchange a partition's system id")); puts(_("u\tchange display/entry units")); puts(_("v\tverify the partition table")); puts(_("w\twrite table to disk and exit")); #if ENABLE_FEATURE_FDISK_ADVANCED puts(_("x\textra functionality (experts only)")); #endif } } #endif /* FEATURE_FDISK_WRITABLE */ #if ENABLE_FEATURE_FDISK_ADVANCED static void xmenu(void) { puts(_("Command Action")); if (LABEL_IS_SUN) { puts(_("a\tchange number of alternate cylinders")); /*sun*/ puts(_("c\tchange number of cylinders")); puts(_("d\tprint the raw data in the partition table")); puts(_("e\tchange number of extra sectors per cylinder"));/*sun*/ puts(_("h\tchange number of heads")); puts(_("i\tchange interleave factor")); /*sun*/ puts(_("o\tchange rotation speed (rpm)")); /*sun*/ puts(_("p\tprint the partition table")); puts(_("q\tquit without saving changes")); puts(_("r\treturn to main menu")); puts(_("s\tchange number of sectors/track")); puts(_("v\tverify the partition table")); puts(_("w\twrite table to disk and exit")); puts(_("y\tchange number of physical cylinders")); /*sun*/ } else if (LABEL_IS_SGI) { puts(_("b\tmove beginning of data in a partition")); /* !sun */ puts(_("c\tchange number of cylinders")); puts(_("d\tprint the raw data in the partition table")); puts(_("e\tlist extended partitions")); /* !sun */ puts(_("g\tcreate an IRIX (SGI) partition table"));/* sgi */ puts(_("h\tchange number of heads")); puts(_("p\tprint the partition table")); puts(_("q\tquit without saving changes")); puts(_("r\treturn to main menu")); puts(_("s\tchange number of sectors/track")); puts(_("v\tverify the partition table")); puts(_("w\twrite table to disk and exit")); } else if (LABEL_IS_AIX) { puts(_("b\tmove beginning of data in a partition")); /* !sun */ puts(_("c\tchange number of cylinders")); puts(_("d\tprint the raw data in the partition table")); puts(_("e\tlist extended partitions")); /* !sun */ puts(_("g\tcreate an IRIX (SGI) partition table"));/* sgi */ puts(_("h\tchange number of heads")); puts(_("p\tprint the partition table")); puts(_("q\tquit without saving changes")); puts(_("r\treturn to main menu")); puts(_("s\tchange number of sectors/track")); puts(_("v\tverify the partition table")); puts(_("w\twrite table to disk and exit")); } else { puts(_("b\tmove beginning of data in a partition")); /* !sun */ puts(_("c\tchange number of cylinders")); puts(_("d\tprint the raw data in the partition table")); puts(_("e\tlist extended partitions")); /* !sun */ puts(_("f\tfix partition order")); /* !sun, !aix, !sgi */ #if ENABLE_FEATURE_SGI_LABEL puts(_("g\tcreate an IRIX (SGI) partition table"));/* sgi */ #endif puts(_("h\tchange number of heads")); puts(_("p\tprint the partition table")); puts(_("q\tquit without saving changes")); puts(_("r\treturn to main menu")); puts(_("s\tchange number of sectors/track")); puts(_("v\tverify the partition table")); puts(_("w\twrite table to disk and exit")); } } #endif /* ADVANCED mode */ #if ENABLE_FEATURE_FDISK_WRITABLE static const struct systypes * get_sys_types(void) { return ( LABEL_IS_SUN ? sun_sys_types : LABEL_IS_SGI ? sgi_sys_types : i386_sys_types); } #else #define get_sys_types() i386_sys_types #endif /* FEATURE_FDISK_WRITABLE */ static const char *partition_type(unsigned char type) { int i; const struct systypes *types = get_sys_types(); for (i = 0; types[i].name; i++) if ((unsigned char)types[i].name[0] == type) return types[i].name + 1; return _("Unknown"); } #if ENABLE_FEATURE_FDISK_WRITABLE static int get_sysid(int i) { return LABEL_IS_SUN ? sunlabel->infos[i].id : (LABEL_IS_SGI ? sgi_get_sysid(i) : ptes[i].part_table->sys_ind); } static void list_types(const struct systypes *sys) { enum { COLS = 3 }; unsigned last[COLS]; unsigned done, next, size; int i; for (size = 0; sys[size].name; size++) /* */; done = 0; for (i = COLS-1; i >= 0; i--) { done += (size + i - done) / (i + 1); last[COLS-1 - i] = done; } i = done = next = 0; do { printf("%c%2x %-22.22s", i ? ' ' : '\n', (unsigned char)sys[next].name[0], sys[next].name + 1); next = last[i++] + done; if (i >= COLS || next >= last[i]) { i = 0; next = ++done; } } while (done < last[0]); 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)); } static void clear_partition(struct partition *p) { if (!p) return; memset(p, 0, sizeof(struct partition)); } #if ENABLE_FEATURE_FDISK_WRITABLE static void set_partition(int i, int doext, off_t start, off_t stop, int sysid) { struct partition *p; off_t offset; if (doext) { p = ptes[i].ext_pointer; offset = extended_offset; } else { p = ptes[i].part_table; offset = ptes[i].offset; } 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); ptes[i].changed = 1; } #endif static int test_c(const char **m, const char *mesg) { int val = 0; if (!*m) printf(_("You must set")); else { printf(" %s", *m); val = 1; } *m = mesg; return val; } static int warn_geometry(void) { const char *m = NULL; int prev = 0; if (!heads) prev = test_c(&m, _("heads")); if (!sectors) prev = test_c(&m, _("sectors")); if (!cylinders) prev = test_c(&m, _("cylinders")); if (!m) return 0; printf("%s%s.\n" #if ENABLE_FEATURE_FDISK_WRITABLE "You can do this from the extra functions menu.\n" #endif , prev ? _(" and ") : " ", m); return 1; } static void update_units(void) { int cyl_units = heads * sectors; if (display_in_cyl_units && cyl_units) units_per_sector = cyl_units; else units_per_sector = 1; /* in sectors */ } #if ENABLE_FEATURE_FDISK_WRITABLE static void warn_cylinders(void) { if (LABEL_IS_DOS && cylinders > 1024 && !nowarn) printf(_("\n" "The number of cylinders for this disk is set to %d.\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); } #endif static void read_extended(int ext) { int i; struct pte *pex; struct partition *p, *q; ext_index = ext; pex = &ptes[ext]; pex->ext_pointer = pex->part_table; p = pex->part_table; if (!get_start_sect(p)) { printf(_("Bad offset in primary extended partition\n")); return; } while (IS_EXTENDED(p->sys_ind)) { struct pte *pe = &ptes[partitions]; if (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]; #if ENABLE_FEATURE_FDISK_WRITABLE printf(_("Warning: deleting partitions after %d\n"), partitions); pre->changed = 1; #endif clear_partition(pre->ext_pointer); return; } read_pte(pe, extended_offset + get_start_sect(p)); if (!extended_offset) extended_offset = get_start_sect(p); q = p = pt_offset(pe->sectorbuffer, 0); for (i = 0; i < 4; i++, p++) if (get_nr_sects(p)) { if (IS_EXTENDED(p->sys_ind)) { if (pe->ext_pointer) printf(_("Warning: extra link " "pointer in partition table" " %d\n"), 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); else pe->part_table = p; } } /* very strange code here... */ if (!pe->part_table) { if (q != pe->ext_pointer) pe->part_table = q; else pe->part_table = q + 1; } if (!pe->ext_pointer) { if (q != pe->part_table) pe->ext_pointer = q; else pe->ext_pointer = q + 1; } p = pe->ext_pointer; partitions++; } #if ENABLE_FEATURE_FDISK_WRITABLE /* remove empty links */ remove: for (i = 4; i < partitions; i++) { struct pte *pe = &ptes[i]; if (!get_nr_sects(pe->part_table) && (partitions > 5 || ptes[4].part_table->sys_ind)) { printf("omitting empty partition (%d)\n", i+1); delete_partition(i); goto remove; /* numbering changed */ } } #endif } #if ENABLE_FEATURE_FDISK_WRITABLE static void create_doslabel(void) { int i; printf( _("Building a new DOS disklabel. Changes will remain in memory only,\n" "until you decide to write them. After that, of course, the previous\n" "content won't be recoverable.\n\n")); current_label_type = label_dos; #if ENABLE_FEATURE_OSF_LABEL possibly_osf_label = 0; #endif partitions = 4; for (i = 510-64; i < 510; i++) MBRbuffer[i] = 0; write_part_table_flag(MBRbuffer); extended_offset = 0; set_all_unchanged(); set_changed(0); get_boot(create_empty_dos); } #endif /* FEATURE_FDISK_WRITABLE */ static void get_sectorsize(void) { if (!user_set_sector_size) { int arg; if (ioctl(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); } } static void get_kernel_geometry(void) { struct hd_geometry geometry; if (!ioctl(fd, HDIO_GETGEO, &geometry)) { kern_heads = geometry.heads; kern_sectors = geometry.sectors; /* never use geometry.cylinders - it is truncated */ } } static void get_partition_table_geometry(void) { const unsigned char *bufp = (const unsigned char *)MBRbuffer; struct partition *p; int i, h, s, hh, ss; int first = 1; int bad = 0; if (!(valid_part_table_flag((char*)bufp))) return; hh = ss = 0; for (i = 0; i < 4; i++) { p = pt_offset(bufp, i); if (p->sys_ind != 0) { h = p->end_head + 1; s = (p->end_sector & 077); if (first) { hh = h; ss = s; first = 0; } else if (hh != h || ss != s) bad = 1; } } if (!first && !bad) { pt_heads = hh; pt_sectors = ss; } } static void get_geometry(void) { int sec_fac; unsigned long long bytes; /* really u64 */ get_sectorsize(); sec_fac = sector_size / 512; #if ENABLE_FEATURE_SUN_LABEL guess_device_type(); #endif heads = cylinders = sectors = 0; kern_heads = kern_sectors = 0; pt_heads = pt_sectors = 0; get_kernel_geometry(); get_partition_table_geometry(); heads = user_heads ? user_heads : pt_heads ? pt_heads : kern_heads ? kern_heads : 255; sectors = user_sectors ? user_sectors : pt_sectors ? pt_sectors : kern_sectors ? kern_sectors : 63; if (ioctl(fd, BLKGETSIZE64, &bytes) == 0) { /* got bytes */ } else { unsigned long longsectors; if (ioctl(fd, BLKGETSIZE, &longsectors)) longsectors = 0; bytes = ((unsigned long long) longsectors) << 9; } total_number_of_sectors = (bytes >> 9); sector_offset = 1; if (dos_compatible_flag) sector_offset = sectors; cylinders = total_number_of_sectors / (heads * sectors * sec_fac); if (!cylinders) cylinders = user_cylinders; } /* * Read MBR. 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) { int i; 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->sectorbuffer = MBRbuffer; #if ENABLE_FEATURE_FDISK_WRITABLE 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 */ if ((fd = open(disk_device, type_open)) < 0) { if ((fd = open(disk_device, O_RDONLY)) < 0) { if (what == try_only) return 1; fdisk_fatal(unable_to_open); } else printf(_("You will not be able to write " "the partition table.\n")); } if (512 != read(fd, MBRbuffer, 512)) { if (what == try_only) 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(); 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_OSF_LABEL if (check_osf_label()) { possibly_osf_label = 1; if (!valid_part_table_flag(MBRbuffer)) { 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")); } #endif #if ENABLE_FEATURE_FDISK_WRITABLE got_dos_table: #endif if (!valid_part_table_flag(MBRbuffer)) { #if !ENABLE_FEATURE_FDISK_WRITABLE return -1; #else switch (what) { case fdisk: printf(_("Device contains neither a valid DOS " "partition table, nor Sun, SGI or OSF " "disklabel\n")); #ifdef __sparc__ #if ENABLE_FEATURE_SUN_LABEL create_sunlabel(); #endif #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 */ } #if ENABLE_FEATURE_FDISK_WRITABLE warn_cylinders(); #endif warn_geometry(); for (i = 0; i < 4; i++) { struct pte *pe = &ptes[i]; if (IS_EXTENDED(pe->part_table->sys_ind)) { if (partitions != 4) printf(_("Ignoring extra extended " "partition %d\n"), i + 1); else read_extended(i); } } for (i = 3; i < 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"), pe->sectorbuffer[510], pe->sectorbuffer[511], i + 1); #if ENABLE_FEATURE_FDISK_WRITABLE pe->changed = 1; #endif } } return 0; } #if ENABLE_FEATURE_FDISK_WRITABLE /* * Print the message MESG, then read an integer between LOW and HIGH (inclusive). * If the user hits Enter, DFLT is returned. * Answers like +10 are interpreted as offsets from BASE. * * 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) { unsigned i; int default_ok = 1; const char *fmt = "%s (%u-%u, default %u): "; if (dflt < low || dflt > high) { fmt = "%s (%u-%u): "; default_ok = 0; } while (1) { int use_default = default_ok; /* ask question and read answer */ do { printf(fmt, mesg, low, high, dflt); read_maybe_empty(""); } while (*line_ptr != '\n' && !isdigit(*line_ptr) && *line_ptr != '-' && *line_ptr != '+'); if (*line_ptr == '+' || *line_ptr == '-') { int minus = (*line_ptr == '-'); int absolute = 0; i = atoi(line_ptr + 1); while (isdigit(*++line_ptr)) use_default = 0; switch (*line_ptr) { case 'c': case 'C': if (!display_in_cyl_units) i *= heads * sectors; break; case 'K': absolute = 1024; break; case 'k': absolute = 1000; break; case 'm': case 'M': absolute = 1000000; break; case 'g': case 'G': absolute = 1000000000; break; default: break; } if (absolute) { unsigned long long bytes; unsigned long unit; bytes = (unsigned long long) i * absolute; unit = sector_size * units_per_sector; bytes += unit/2; /* round */ bytes /= unit; i = bytes; } if (minus) i = -i; i += base; } else { i = atoi(line_ptr); while (isdigit(*line_ptr)) { line_ptr++; use_default = 0; } } if (use_default) printf(_("Using default value %u\n"), i = dflt); if (i >= low && i <= high) break; else printf(_("Value is out of range\n")); } return i; } static int get_partition(int warn, int max) { struct pte *pe; int i; i = read_int(1, 0, max, 0, _("Partition number")) - 1; pe = &ptes[i]; if (warn) { if ((!LABEL_IS_SUN && !LABEL_IS_SGI && !pe->part_table->sys_ind) || (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); } } return i; } static int get_existing_partition(int warn, int max) { int pno = -1; int i; for (i = 0; i < max; i++) { struct pte *pe = &ptes[i]; struct partition *p = pe->part_table; if (p && !is_cleared_partition(p)) { if (pno >= 0) goto not_unique; pno = i; } } if (pno >= 0) { printf(_("Selected partition %d\n"), pno+1); return pno; } printf(_("No partition is defined yet!\n")); return -1; not_unique: return get_partition(warn, max); } static int get_nonexisting_partition(int warn, int max) { int pno = -1; int i; for (i = 0; i < max; i++) { struct pte *pe = &ptes[i]; struct partition *p = pe->part_table; if (p && is_cleared_partition(p)) { if (pno >= 0) goto not_unique; pno = i; } } if (pno >= 0) { printf(_("Selected partition %d\n"), pno+1); return pno; } printf(_("All primary partitions have been defined already!\n")); return -1; not_unique: return get_partition(warn, max); } static void change_units(void) { display_in_cyl_units = !display_in_cyl_units; update_units(); printf(_("Changing display/entry units to %s\n"), str_units(PLURAL)); } static void toggle_active(int i) { struct pte *pe = &ptes[i]; 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); 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; if (dos_compatible_flag) { sector_offset = sectors; printf(_("DOS Compatibility flag is set\n")); } else { sector_offset = 1; printf(_("DOS Compatibility flag is not set\n")); } } static void delete_partition(int i) { struct pte *pe = &ptes[i]; struct partition *p = pe->part_table; struct partition *q = pe->ext_pointer; /* Note that for the fifth partition (i == 4) we don't actually * decrement partitions. */ if (warn_geometry()) return; /* C/H/S not set */ pe->changed = 1; if (LABEL_IS_SUN) { sun_delete_partition(i); return; } if (LABEL_IS_SGI) { sgi_delete_partition(i); return; } if (i < 4) { if (IS_EXTENDED(p->sys_ind) && i == ext_index) { partitions = 4; ptes[ext_index].ext_pointer = NULL; extended_offset = 0; } clear_partition(p); return; } if (!q->sys_ind && i > 4) { /* the last one in the chain - just delete */ --partitions; --i; clear_partition(ptes[i].ext_pointer); ptes[i].changed = 1; } else { /* not the last one - further ones will be moved down */ if (i > 4) { /* delete this link in the chain */ p = ptes[i-1].ext_pointer; *p = *q; 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 */ /* 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; pe->changed = 1; } if (partitions > 5) { partitions--; while (i < partitions) { ptes[i] = ptes[i+1]; i++; } } else /* the only logical: clear only */ clear_partition(ptes[i].part_table); } } static void change_sysid(void) { int i, sys, origsys; struct partition *p; /* If sgi_label then don't use get_existing_partition, 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); } else { i = get_partition(0, partitions); } if (i == -1) return; p = ptes[i].part_table; origsys = sys = get_sysid(i); /* 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); return; } while (1) { 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. You can delete\n" "a partition using the 'd' command.\n")); /* 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" "Delete it first.\n")); break; } } if (sys < 256) { 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")); if (LABEL_IS_SGI && ( (i == 10 && sys != SGI_ENTIRE_DISK) || (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")); } if (sys == origsys) break; if (LABEL_IS_SUN) { sun_change_sysid(i, sys); } else if (LABEL_IS_SGI) { sgi_change_sysid(i, sys); } else p->sys_ind = sys; printf(_("Changed system type of partition %d " "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; break; } } } #endif /* FEATURE_FDISK_WRITABLE */ /* check_consistency() and linear2chs() added Sat Mar 6 12:28:16 1993, * faith@cs.unc.edu, based on code fragments from pfdisk by Gordon W. Ross, * Jan. 1990 (version 1.2.1 by Gordon W. Ross Aug. 1990; Modified by S. * Lubkin Oct. 1991). */ static void linear2chs(unsigned ls, unsigned *c, unsigned *h, unsigned *s) { int spc = heads * sectors; *c = ls / spc; ls = ls % spc; *h = ls / sectors; *s = ls % sectors + 1; /* sectors count from 1 */ } static void check_consistency(const struct partition *p, int partition) { unsigned pbc, pbh, pbs; /* physical beginning c, h, s */ unsigned pec, peh, pes; /* physical ending c, h, s */ unsigned lbc, lbh, lbs; /* logical beginning c, h, s */ unsigned lec, leh, les; /* logical ending c, h, s */ if (!heads || !sectors || (partition >= 4)) return; /* do not check extended partitions */ /* physical beginning c, h, s */ pbc = (p->cyl & 0xff) | ((p->sector << 2) & 0x300); pbh = p->head; pbs = p->sector & 0x3f; /* physical ending c, h, s */ pec = (p->end_cyl & 0xff) | ((p->end_sector << 2) & 0x300); peh = p->end_head; pes = p->end_sector & 0x3f; /* compute logical beginning (c, h, s) */ linear2chs(get_start_sect(p), &lbc, &lbh, &lbs); /* compute logical ending (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 " "beginnings (non-Linux?):\n"), partition + 1); printf(_(" phys=(%d, %d, %d) "), pbc, pbh, pbs); printf(_("logical=(%d, %d, %d)\n"),lbc, lbh, lbs); } /* Same physical / logical ending? */ if (cylinders <= 1024 && (pec != lec || peh != leh || pes != les)) { printf(_("Partition %d 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); } /* Ending on cylinder boundary? */ if (peh != (heads - 1) || pes != sectors) { printf(_("Partition %i 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; if (megabytes < 10000) printf(_("\nDisk %s: %ld MB, %lld 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); 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); } /* * Check whether partition entries are ordered by their starting positions. * Return 0 if OK. Return i if partition i should have been earlier. * Two separate checks: primary and logical partitions. */ static int wrong_p_order(int *prev) { const struct pte *pe; const struct partition *p; off_t last_p_start_pos = 0, p_start_pos; int i, last_i = 0; for (i = 0 ; i < 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); if (last_p_start_pos > p_start_pos) { if (prev) *prev = last_i; return i; } last_p_start_pos = p_start_pos; last_i = i; } } return 0; } #if ENABLE_FEATURE_FDISK_ADVANCED /* * Fix the chain of logicals. * extended_offset is unchanged, the set of sectors used is unchanged * The chain is sorted so that sectors increase, and so that * starting sectors increase. * * After this it may still be that cfdisk doesnt like the table. * (This is because cfdisk considers expanded parts, from link to * end of partition, and these may still overlap.) * Now * sfdisk /dev/hda > ohda; sfdisk /dev/hda < ohda * may help. */ static void fix_chain_of_logicals(void) { int j, oj, ojj, sj, sjj; struct partition *pj,*pjj,tmp; /* 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; if (oj > ojj) { ptes[j].offset = ojj; ptes[j+1].offset = oj; pj = ptes[j].part_table; set_start_sect(pj, get_start_sect(pj)+oj-ojj); pjj = ptes[j+1].part_table; set_start_sect(pjj, get_start_sect(pjj)+ojj-oj); set_start_sect(ptes[j-1].ext_pointer, ojj-extended_offset); set_start_sect(ptes[j].ext_pointer, oj-extended_offset); goto stage1; } } /* Stage 2: sort starting sectors */ stage2: for (j = 4; j < 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; if (oj+sj > ojj+sjj) { tmp = *pj; *pj = *pjj; *pjj = tmp; set_start_sect(pj, ojj+sjj-oj); set_start_sect(pjj, oj+sj-ojj); goto stage2; } } /* Probably something was changed */ for (j = 4; j < partitions; j++) ptes[j].changed = 1; } static void fix_partition_table_order(void) { struct pte *pei, *pek; int i,k; if (!wrong_p_order(NULL)) { printf(_("Nothing to do. Ordering is correct already.\n\n")); return; } while ((i = wrong_p_order(&k)) != 0 && i < 4) { /* partition i should have come earlier, move it */ /* We have to move data in the MBR */ struct partition *pi, *pk, *pe, pbuf; pei = &ptes[i]; pek = &ptes[k]; pe = pei->ext_pointer; pei->ext_pointer = pek->ext_pointer; pek->ext_pointer = pe; pi = pei->part_table; pk = pek->part_table; memmove(&pbuf, pi, sizeof(struct partition)); memmove(pi, pk, sizeof(struct partition)); memmove(pk, &pbuf, sizeof(struct partition)); pei->changed = pek->changed = 1; } if (i) fix_chain_of_logicals(); printf("Done.\n"); } #endif static void list_table(int xtra) { const struct partition *p; int i, w; if (LABEL_IS_SUN) { sun_list_table(xtra); return; } if (LABEL_IS_SUN) { sgi_list_table(xtra); return; } list_disk_geometry(); if (LABEL_IS_OSF) { xbsd_print_disklabel(xtra); return; } /* Heuristic: we list partition 3 of /dev/foo as /dev/foo3, but if the device name ends in a digit, say /dev/foo1, then the partition is called /dev/foo1p3. */ w = strlen(disk_device); if (w && isdigit(disk_device[w-1])) w++; if (w < 5) w = 5; // 1 12345678901 12345678901 12345678901 12 printf(_("%*s Boot Start End Blocks Id System\n"), w+1, _("Device")); for (i = 0; i < partitions; i++) { const struct pte *pe = &ptes[i]; off_t psects; off_t pblocks; unsigned podd; p = pe->part_table; if (!p || is_cleared_partition(p)) continue; psects = get_nr_sects(p); pblocks = psects; podd = 0; if (sector_size < 1024) { pblocks /= (1024 / sector_size); podd = psects % (1024 / sector_size); } if (sector_size > 1024) pblocks *= (sector_size / 1024); printf("%s %c %11llu %11llu %11llu%c %2x %s\n", partname(disk_device, i+1, w+2), !p->boot_ind ? ' ' : p->boot_ind == ACTIVE_FLAG /* boot flag */ ? '*' : '?', (unsigned long long) cround(get_partition_start(pe)), /* start */ (unsigned long long) cround(get_partition_start(pe) + psects /* end */ - (psects ? 1 : 0)), (unsigned long long) pblocks, podd ? '+' : ' ', /* odd flag on end */ p->sys_ind, /* type id */ partition_type(p->sys_ind)); /* type name */ check_consistency(p, i); } /* 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... */ if (LABEL_IS_DOS && wrong_p_order(NULL)) { /* FIXME */ printf(_("\nPartition table entries are not in disk order\n")); } } #if ENABLE_FEATURE_FDISK_ADVANCED static void x_list_table(int extend) { const struct pte *pe; const struct partition *p; int i; printf(_("\nDisk %s: %d heads, %d sectors, %d cylinders\n\n"), disk_device, heads, sectors, cylinders); printf(_("Nr AF Hd Sec Cyl Hd Sec Cyl Start Size ID\n")); for (i = 0 ; i < 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", 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); if (p->sys_ind) check_consistency(p, i); } } } #endif #if ENABLE_FEATURE_FDISK_WRITABLE static void fill_bounds(off_t *first, off_t *last) { int i; const struct pte *pe = &ptes[0]; const struct partition *p; for (i = 0; i < 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); last[i] = first[i] + get_nr_sects(p) - 1; } } } static void check(int n, unsigned h, unsigned s, unsigned c, off_t start) { off_t total, real_s, real_c; real_s = sector(s) - 1; real_c = cylinder(s, c); total = (real_c * sectors + real_s) * heads + h; if (!total) printf(_("Warning: 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(_("Partitions %d: cylinder %llu greater than " "maximum %d\n"), n, (unsigned long long)real_c + 1, cylinders); if (cylinders <= 1024 && start != total) printf(_("Partition %d: previous sectors %llu disagrees with " "total %llu\n"), n, (unsigned long long)start, (unsigned long long)total); } static void verify(void) { int i, j; unsigned total = 1; off_t first[partitions], last[partitions]; struct partition *p; if (warn_geometry()) return; if (LABEL_IS_SUN) { verify_sun(); return; } if (LABEL_IS_SGI) { verify_sgi(1); return; } fill_bounds(first, last); for (i = 0; i < 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]) printf(_("Warning: bad start-of-data in " "partition %d\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); total += first[i] >= first[j] ? first[i] : first[j]; total -= last[i] <= last[j] ? last[i] : last[j]; } } } if (extended_offset) { struct pte *pex = &ptes[ext_index]; off_t e_last = get_start_sect(pex->part_table) + get_nr_sects(pex->part_table) - 1; for (i = 4; i < partitions; i++) { total++; p = ptes[i].part_table; if (!p->sys_ind) { if (i != 4 || i + 1 < partitions) printf(_("Warning: partition %d " "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); } } if (total > heads * sectors * cylinders) printf(_("Total allocated sectors %d greater than the maximum " "%d\n"), total, heads * sectors * cylinders); else if ((total = heads * sectors * cylinders - total) != 0) printf(_("%d unallocated sectors\n"), total); } static void add_partition(int n, int sys) { char mesg[256]; /* 48 does not suffice in Japanese */ int i, num_read = 0; struct partition *p = ptes[n].part_table; struct partition *q = ptes[ext_index].part_table; long long llimit; off_t start, stop = 0, limit, temp, first[partitions], last[partitions]; if (p && p->sys_ind) { printf(_("Partition %d is already defined. Delete " "it before re-adding it.\n"), n + 1); return; } fill_bounds(first, last); if (n < 4) { start = sector_offset; if (display_in_cyl_units || !total_number_of_sectors) llimit = heads * sectors * cylinders - 1; else llimit = total_number_of_sectors - 1; limit = llimit; if (limit != llimit) limit = 0x7fffffff; if (extended_offset) { first[ext_index] = extended_offset; last[ext_index] = get_start_sect(q) + get_nr_sects(q) - 1; } } else { start = extended_offset + sector_offset; limit = get_start_sect(q) + get_nr_sects(q) - 1; } if (display_in_cyl_units) for (i = 0; i < 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++) { int lastplusoff; if (start == ptes[i].offset) start += sector_offset; lastplusoff = last[i] + ((n < 4) ? 0 : sector_offset); if (start >= first[i] && start <= lastplusoff) start = lastplusoff + 1; } if (start > limit) break; if (start >= temp+units_per_sector && num_read) { printf(_("Sector %"OFF_FMT"d is already allocated\n"), temp); temp = start; num_read = 0; } if (!num_read && start == temp) { off_t saved_start; saved_start = start; 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; } num_read = 1; } } while (start != temp || !num_read); 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++; if (sector_offset == 1) start++; } } for (i = 0; i < partitions; i++) { struct pte *pe = &ptes[i]; if (start < pe->offset && limit >= pe->offset) limit = pe->offset - 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--; return; } if (cround(start) == cround(limit)) { stop = limit; } else { 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); if (display_in_cyl_units) { stop = stop * units_per_sector - 1; if (stop >limit) stop = limit; } } set_partition(n, 0, start, stop, sys); if (n > 4) set_partition(n - 1, 1, ptes[n].offset, stop, EXTENDED); if (IS_EXTENDED(sys)) { struct pte *pe4 = &ptes[4]; struct pte *pen = &ptes[n]; ext_index = n; pen->ext_pointer = p; pe4->offset = 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; } } static void add_logical(void) { if (partitions > 5 || ptes[4].part_table->sys_ind) { struct pte *pe = &ptes[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->changed = 1; partitions++; } add_partition(partitions - 1, LINUX_NATIVE); } static void new_partition(void) { int i, free_primary = 0; if (warn_geometry()) return; if (LABEL_IS_SUN) { add_sun_partition(get_partition(0, partitions), LINUX_NATIVE); return; } if (LABEL_IS_SGI) { sgi_add_partition(get_partition(0, partitions), LINUX_NATIVE); return; } if (LABEL_IS_AIX) { printf(_("\tSorry - this fdisk cannot handle AIX disk labels." "\n\tIf you want to add DOS-type partitions, create" "\n\ta new empty DOS partition table first. (Use o.)" "\n\tWARNING: " "This will destroy the present disk contents.\n")); return; } for (i = 0; i < 4; i++) free_primary += !ptes[i].part_table->sys_ind; if (!free_primary && partitions >= MAXIMUM_PARTS) { printf(_("The maximum number of partitions has been created\n")); return; } if (!free_primary) { if (extended_offset) add_logical(); else printf(_("You must delete some partition and add " "an extended partition first\n")); } else { char c, line[LINE_LENGTH]; snprintf(line, sizeof(line), "Command action\n" " %s\n" " p primary partition (1-4)\n", (extended_offset ? "l logical (5 or over)" : "e extended")); while (1) { c = read_nonempty(line); if (c == 'p' || c == 'P') { i = get_nonexisting_partition(0, 4); if (i >= 0) add_partition(i, LINUX_NATIVE); return; } else if (c == 'l' && extended_offset) { add_logical(); return; } else if (c == 'e' && !extended_offset) { i = get_nonexisting_partition(0, 4); if (i >= 0) add_partition(i, EXTENDED); return; } else printf(_("Invalid partition number " "for type '%c'\n"), c); } } } static void write_table(void) { int i; if (LABEL_IS_DOS) { for (i = 0; i < 3; i++) if (ptes[i].changed) ptes[3].changed = 1; for (i = 3; i < partitions; i++) { struct pte *pe = &ptes[i]; if (pe->changed) { write_part_table_flag(pe->sectorbuffer); write_sector(pe->offset, pe->sectorbuffer); } } } else if (LABEL_IS_SGI) { /* no test on change? the printf 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(); } printf(_("The partition table has been altered!\n\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 #define MAX_PER_LINE 16 static void print_buffer(char *pbuffer) { int i,l; for (i = 0, l = 0; i < sector_size; i++, l++) { if (l == 0) printf("0x%03X:", i); printf(" %02X", (unsigned char) pbuffer[i]); if (l == MAX_PER_LINE - 1) { puts(""); l = -1; } } if (l > 0) puts(""); puts(""); } static void print_raw(void) { int i; printf(_("Device: %s\n"), disk_device); if (LABEL_IS_SGI || LABEL_IS_SUN) print_buffer(MBRbuffer); else { for (i = 3; i < partitions; i++) print_buffer(ptes[i].sectorbuffer); } } static void move_begin(int i) { struct pte *pe = &ptes[i]; struct partition *p = pe->part_table; off_t new, first; 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); 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); pe->changed = 1; } } static void xselect(void) { char c; while (1) { putchar('\n'); c = tolower(read_nonempty(_("Expert command (m for help): "))); switch (c) { case 'a': if (LABEL_IS_SUN) sun_set_alt_cyl(); break; case 'b': if (LABEL_IS_DOS) move_begin(get_partition(0, partitions)); break; case 'c': user_cylinders = cylinders = read_int(1, cylinders, 1048576, 0, _("Number of cylinders")); if (LABEL_IS_SUN) sun_set_ncyl(cylinders); if (LABEL_IS_DOS) warn_cylinders(); break; case 'd': print_raw(); break; case 'e': if (LABEL_IS_SGI) sgi_set_xcyl(); else if (LABEL_IS_SUN) sun_set_xcyl(); else if (LABEL_IS_DOS) x_list_table(1); break; case 'f': if (LABEL_IS_DOS) fix_partition_table_order(); break; case 'g': #if ENABLE_FEATURE_SGI_LABEL create_sgilabel(); #endif break; case 'h': user_heads = heads = read_int(1, heads, 256, 0, _("Number of heads")); update_units(); break; case 'i': if (LABEL_IS_SUN) sun_set_ilfact(); break; case 'o': if (LABEL_IS_SUN) sun_set_rspeed(); break; case 'p': if (LABEL_IS_SUN) list_table(1); else x_list_table(0); break; case 'q': close(fd); puts(""); exit(0); case 'r': return; case 's': user_sectors = sectors = read_int(1, sectors, 63, 0, _("Number of sectors")); if (dos_compatible_flag) { sector_offset = sectors; printf(_("Warning: setting sector offset for DOS " "compatiblity\n")); } update_units(); break; case 'v': verify(); break; case 'w': write_table(); /* does not return */ break; case 'y': if (LABEL_IS_SUN) sun_set_pcylcount(); break; default: xmenu(); } } } #endif /* ADVANCED mode */ static int is_ide_cdrom_or_tape(const char *device) { FILE *procf; char buf[100]; struct stat statbuf; int is_ide = 0; /* No device was given explicitly, and we are trying some likely things. But opening /dev/hdc may produce errors like "hdc: tray open or drive not ready" if it happens to be a CD-ROM drive. It even happens that 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)) return 0; snprintf(buf, sizeof(buf), "/proc/ide/%s/media", device+5); procf = fopen(buf, "r"); if (procf != NULL && fgets(buf, sizeof(buf), procf)) is_ide = (!strncmp(buf, "cdrom", 5) || !strncmp(buf, "tape", 4)); else /* Now when this proc file does not exist, skip the device when it is read-only. */ if (stat(device, &statbuf) == 0) is_ide = ((statbuf.st_mode & 0222) == 0); if (procf) fclose(procf); return is_ide; } static void trydev(const char *device, int user_specified) { int gb; disk_device = device; if (setjmp(listingbuf)) return; 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 { /* 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; } } } /* 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) { FILE *procpt; char line[100], ptname[100], devname[120], *s; int ma, mi, sz; procpt = fopen_or_warn("/proc/partitions", "r"); while (fgets(line, sizeof(line), procpt)) { if (sscanf(line, " %d %d %d %[^\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 ENABLE_FEATURE_CLEAN_UP fclose(procpt); #endif } #if ENABLE_FEATURE_FDISK_WRITABLE static void unknown_command(int c) { printf(_("%c: unknown command\n"), c); } #endif void BUG_fdisk_globals_overflow(void); int fdisk_main(int argc, char **argv); int fdisk_main(int argc, char **argv) { char *str_b, *str_C, *str_H, *str_S; unsigned opt; /* * fdisk -v * fdisk -l [-b sectorsize] [-u] device ... * fdisk -s [partition] ... * fdisk [-b sectorsize] [-u] device * * 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, }; if (sizeof(G) > sizeof(bb_common_bufsiz1)) BUG_fdisk_globals_overflow(); opt = getopt32(argc, argv, "b:C:H:lS:u" USE_FEATURE_FDISK_BLKSIZE("s"), &str_b, &str_C, &str_H, &str_S); argc -= optind; argv += optind; if (opt & OPT_b) { // -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) 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 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 listing = 1; for (k = 0; k < argc; k++) trydev(argv[k], 1); } else { /* we no longer have default device names */ /* but, we can use /proc/partitions instead */ tryprocpt(); } return 0; #if ENABLE_FEATURE_FDISK_WRITABLE } #endif #if ENABLE_FEATURE_FDISK_BLKSIZE if (opt & OPT_s) { long size; int j; nowarn = 1; type_open = O_RDONLY; if (argc <= 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); close(fd); if (argc == 1) printf("%ld\n", size/2); else printf("%s: %ld\n", argv[j], size/2); } return 0; } #endif #if ENABLE_FEATURE_FDISK_WRITABLE if (argc != 1) bb_show_usage(); disk_device = argv[0]; get_boot(fdisk); if (LABEL_IS_OSF) { /* OSF label, and no DOS label */ printf(_("Detected an OSF/1 disklabel on %s, entering " "disklabel mode.\n"), disk_device); bsd_select(); /*Why do we do this? It seems to be counter-intuitive*/ 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): "))); switch (c) { case 'a': if (LABEL_IS_DOS) toggle_active(get_partition(1, partitions)); else if (LABEL_IS_SUN) toggle_sunflags(get_partition(1, partitions), 0x01); else if (LABEL_IS_SGI) sgi_set_bootpartition( get_partition(1, partitions)); else unknown_command(c); break; case 'b': if (LABEL_IS_SGI) { 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")); else sgi_set_bootfile(line_ptr); } #if ENABLE_FEATURE_OSF_LABEL else bsd_select(); #endif break; case 'c': if (LABEL_IS_DOS) toggle_dos_compatibility_flag(); else if (LABEL_IS_SUN) toggle_sunflags(get_partition(1, partitions), 0x10); else if (LABEL_IS_SGI) sgi_set_swappartition( get_partition(1, partitions)); else unknown_command(c); break; case 'd': { int j; /* If sgi_label then don't use get_existing_partition, let the user select a partition, since get_existing_partition() only works for Linux-like partition tables */ if (!LABEL_IS_SGI) { j = get_existing_partition(1, partitions); } else { j = get_partition(1, partitions); } if (j >= 0) delete_partition(j); } break; case 'i': if (LABEL_IS_SGI) create_sgiinfo(); else unknown_command(c); case 'l': list_types(get_sys_types()); break; case 'm': menu(); break; case 'n': new_partition(); break; case 'o': create_doslabel(); break; case 'p': list_table(0); break; case 'q': close(fd); puts(""); return 0; case 's': #if ENABLE_FEATURE_SUN_LABEL create_sunlabel(); #endif break; case 't': change_sysid(); break; case 'u': change_units(); break; case 'v': verify(); break; case 'w': 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")); } else xselect(); break; #endif default: unknown_command(c); menu(); } } return 0; #endif /* FEATURE_FDISK_WRITABLE */ }