| /* |
| * mkfs.minix.c - make a linux (minix) file-system. |
| * |
| * (C) 1991 Linus Torvalds. This file may be redistributed as per |
| * the Linux copyright. |
| */ |
| |
| /* |
| * DD.MM.YY |
| * |
| * 24.11.91 - Time began. Used the fsck sources to get started. |
| * |
| * 25.11.91 - Corrected some bugs. Added support for ".badblocks" |
| * The algorithm for ".badblocks" is a bit weird, but |
| * it should work. Oh, well. |
| * |
| * 25.01.92 - Added the -l option for getting the list of bad blocks |
| * out of a named file. (Dave Rivers, rivers@ponds.uucp) |
| * |
| * 28.02.92 - Added %-information when using -c. |
| * |
| * 28.02.93 - Added support for other namelengths than the original |
| * 14 characters so that I can test the new kernel routines.. |
| * |
| * 09.10.93 - Make exit status conform to that required by fsutil |
| * (Rik Faith, faith@cs.unc.edu) |
| * |
| * 31.10.93 - Added inode request feature, for backup floppies: use |
| * 32 inodes, for a news partition use more. |
| * (Scott Heavner, sdh@po.cwru.edu) |
| * |
| * 03.01.94 - Added support for file system valid flag. |
| * (Dr. Wettstein, greg%wind.uucp@plains.nodak.edu) |
| * |
| * 30.10.94 - Added support for v2 filesystem |
| * (Andreas Schwab, schwab@issan.informatik.uni-dortmund.de) |
| * |
| * 09.11.94 - Added test to prevent overwrite of mounted fs adapted |
| * from Theodore Ts'o's (tytso@athena.mit.edu) mke2fs |
| * program. (Daniel Quinlan, quinlan@yggdrasil.com) |
| * |
| * 03.20.95 - Clear first 512 bytes of filesystem to make certain that |
| * the filesystem is not misidentified as a MS-DOS FAT filesystem. |
| * (Daniel Quinlan, quinlan@yggdrasil.com) |
| * |
| * 02.07.96 - Added small patch from Russell King to make the program a |
| * good deal more portable (janl@math.uio.no) |
| * |
| * 06.29.11 - Overall cleanups for util-linux and v3 support |
| * Davidlohr Bueso <dave@gnu.org> |
| * |
| * 06.20.15 - Do not infinite loop or crash on large devices |
| * Joshua Hudson <joshudson@gmail.com> |
| * |
| */ |
| |
| #include <stdio.h> |
| #include <time.h> |
| #include <unistd.h> |
| #include <string.h> |
| #include <signal.h> |
| #include <fcntl.h> |
| #include <ctype.h> |
| #include <stdlib.h> |
| #include <termios.h> |
| #include <sys/stat.h> |
| #include <getopt.h> |
| #include <err.h> |
| |
| #include "blkdev.h" |
| #include "minix_programs.h" |
| #include "nls.h" |
| #include "pathnames.h" |
| #include "bitops.h" |
| #include "exitcodes.h" |
| #include "strutils.h" |
| #include "all-io.h" |
| #include "closestream.h" |
| #include "ismounted.h" |
| |
| #define XALLOC_EXIT_CODE MKFS_EX_ERROR |
| #include "xalloc.h" |
| |
| #define MINIX_ROOT_INO 1 |
| #define MINIX_BAD_INO 2 |
| |
| #define TEST_BUFFER_BLOCKS 16 |
| #define MAX_GOOD_BLOCKS 512 |
| |
| #define MINIX_MAX_INODES 65535 |
| |
| #define DEFAULT_FS_VERSION 1 |
| |
| /* |
| * Global variables used in minix_programs.h inline functions |
| */ |
| int fs_version = DEFAULT_FS_VERSION; |
| char *super_block_buffer; |
| |
| static char *inode_buffer = NULL; |
| |
| #define Inode (((struct minix_inode *) inode_buffer) - 1) |
| #define Inode2 (((struct minix2_inode *) inode_buffer) - 1) |
| |
| struct fs_control { |
| char *device_name; /* device on a Minix file system is created */ |
| int device_fd; /* open file descriptor of the device */ |
| unsigned long long fs_blocks; /* device block count for the file system */ |
| int fs_used_blocks; /* used blocks on a device */ |
| int fs_bad_blocks; /* number of bad blocks found from device */ |
| uint16_t fs_namelen; /* maximum length of filenames */ |
| size_t fs_dirsize; /* maximum size of directory */ |
| unsigned long fs_inodes; /* number of inodes */ |
| int fs_magic; /* file system magic number */ |
| unsigned int |
| check_blocks:1; /* check for bad blocks */ |
| }; |
| |
| static char root_block[MINIX_BLOCK_SIZE]; |
| static char boot_block_buffer[512]; |
| static unsigned short good_blocks_table[MAX_GOOD_BLOCKS]; |
| |
| static char *inode_map; |
| static char *zone_map; |
| |
| #define zone_in_use(x) (isset(zone_map,(x)-get_first_zone()+1) != 0) |
| |
| #define mark_inode(x) (setbit(inode_map,(x))) |
| #define unmark_inode(x) (clrbit(inode_map,(x))) |
| |
| #define mark_zone(x) (setbit(zone_map,(x)-get_first_zone()+1)) |
| #define unmark_zone(x) (clrbit(zone_map,(x)-get_first_zone()+1)) |
| |
| static void __attribute__((__noreturn__)) usage(void) |
| { |
| FILE *out = stdout; |
| fputs(USAGE_HEADER, out); |
| fprintf(out, _(" %s [options] /dev/name [blocks]\n"), program_invocation_short_name); |
| fputs(USAGE_OPTIONS, out); |
| fputs(_(" -1 use Minix version 1\n"), out); |
| fputs(_(" -2, -v use Minix version 2\n"), out); |
| fputs(_(" -3 use Minix version 3\n"), out); |
| fputs(_(" -n, --namelength <num> maximum length of filenames\n"), out); |
| fputs(_(" -i, --inodes <num> number of inodes for the filesystem\n"), out); |
| fputs(_(" -c, --check check the device for bad blocks\n"), out); |
| fputs(_(" -l, --badblocks <file> list of bad blocks from file\n"), out); |
| fputs(USAGE_SEPARATOR, out); |
| printf(USAGE_HELP_OPTIONS(25)); |
| printf(USAGE_MAN_TAIL("mkfs.minix(8)")); |
| exit(MKFS_EX_OK); |
| } |
| |
| #ifdef TEST_SCRIPT |
| static inline time_t mkfs_minix_time(time_t *t) |
| { |
| const char *str = getenv("MKFS_MINIX_TEST_SECOND_SINCE_EPOCH"); |
| time_t sec; |
| |
| if (str && sscanf(str, "%ld", &sec) == 1) |
| return sec; |
| return time(t); |
| } |
| #else /* !TEST_SCRIPT */ |
| # define mkfs_minix_time(x) time(x) |
| #endif |
| |
| static void super_set_state(void) |
| { |
| switch (fs_version) { |
| case 1: |
| case 2: |
| Super.s_state |= MINIX_VALID_FS; |
| Super.s_state &= ~MINIX_ERROR_FS; |
| break; |
| default: /* v3 */ |
| break; |
| } |
| } |
| |
| static void write_tables(const struct fs_control *ctl) { |
| unsigned long imaps = get_nimaps(); |
| unsigned long zmaps = get_nzmaps(); |
| size_t buffsz = get_inode_buffer_size(); |
| |
| /* Mark the super block valid. */ |
| super_set_state(); |
| |
| if (lseek(ctl->device_fd, 0, SEEK_SET)) |
| err(MKFS_EX_ERROR, _("%s: seek to boot block failed " |
| " in write_tables"), ctl->device_name); |
| if (write_all(ctl->device_fd, boot_block_buffer, 512)) |
| err(MKFS_EX_ERROR, _("%s: unable to clear boot sector"), ctl->device_name); |
| if (MINIX_BLOCK_SIZE != lseek(ctl->device_fd, MINIX_BLOCK_SIZE, SEEK_SET)) |
| err(MKFS_EX_ERROR, _("%s: seek failed in write_tables"), ctl->device_name); |
| |
| if (write_all(ctl->device_fd, super_block_buffer, MINIX_BLOCK_SIZE)) |
| err(MKFS_EX_ERROR, _("%s: unable to write super-block"), ctl->device_name); |
| |
| if (write_all(ctl->device_fd, inode_map, imaps * MINIX_BLOCK_SIZE)) |
| err(MKFS_EX_ERROR, _("%s: unable to write inode map"), ctl->device_name); |
| |
| if (write_all(ctl->device_fd, zone_map, zmaps * MINIX_BLOCK_SIZE)) |
| err(MKFS_EX_ERROR, _("%s: unable to write zone map"), ctl->device_name); |
| |
| if (write_all(ctl->device_fd, inode_buffer, buffsz)) |
| err(MKFS_EX_ERROR, _("%s: unable to write inodes"), ctl->device_name); |
| } |
| |
| static void write_block(const struct fs_control *ctl, int blk, char * buffer) { |
| if (blk * MINIX_BLOCK_SIZE != lseek(ctl->device_fd, blk * MINIX_BLOCK_SIZE, SEEK_SET)) |
| errx(MKFS_EX_ERROR, _("%s: seek failed in write_block"), ctl->device_name); |
| |
| if (write_all(ctl->device_fd, buffer, MINIX_BLOCK_SIZE)) |
| errx(MKFS_EX_ERROR, _("%s: write failed in write_block"), ctl->device_name); |
| } |
| |
| static int get_free_block(struct fs_control *ctl) { |
| unsigned int blk; |
| unsigned int zones = get_nzones(); |
| unsigned int first_zone = get_first_zone(); |
| |
| if (ctl->fs_used_blocks + 1 >= MAX_GOOD_BLOCKS) |
| errx(MKFS_EX_ERROR, _("%s: too many bad blocks"), ctl->device_name); |
| if (ctl->fs_used_blocks) |
| blk = good_blocks_table[ctl->fs_used_blocks - 1] + 1; |
| else |
| blk = first_zone; |
| while (blk < zones && zone_in_use(blk)) |
| blk++; |
| if (blk >= zones) |
| errx(MKFS_EX_ERROR, _("%s: not enough good blocks"), ctl->device_name); |
| good_blocks_table[ctl->fs_used_blocks] = blk; |
| ctl->fs_used_blocks++; |
| return blk; |
| } |
| |
| static void mark_good_blocks(const struct fs_control *ctl) { |
| int blk; |
| |
| for (blk=0 ; blk < ctl->fs_used_blocks ; blk++) |
| mark_zone(good_blocks_table[blk]); |
| } |
| |
| static inline int next(unsigned long zone) { |
| unsigned long zones = get_nzones(); |
| unsigned long first_zone = get_first_zone(); |
| |
| if (!zone) |
| zone = first_zone-1; |
| while (++zone < zones) |
| if (zone_in_use(zone)) |
| return zone; |
| return 0; |
| } |
| |
| static void make_bad_inode_v1(struct fs_control *ctl) |
| { |
| struct minix_inode * inode = &Inode[MINIX_BAD_INO]; |
| int i,j,zone; |
| int ind=0,dind=0; |
| unsigned short ind_block[MINIX_BLOCK_SIZE>>1]; |
| unsigned short dind_block[MINIX_BLOCK_SIZE>>1]; |
| |
| #define NEXT_BAD (zone = next(zone)) |
| |
| if (!ctl->fs_bad_blocks) |
| return; |
| mark_inode(MINIX_BAD_INO); |
| inode->i_nlinks = 1; |
| inode->i_time = mkfs_minix_time(NULL); |
| inode->i_mode = S_IFREG + 0000; |
| inode->i_size = ctl->fs_bad_blocks * MINIX_BLOCK_SIZE; |
| zone = next(0); |
| for (i=0 ; i<7 ; i++) { |
| inode->i_zone[i] = zone; |
| if (!NEXT_BAD) |
| goto end_bad; |
| } |
| inode->i_zone[7] = ind = get_free_block(ctl); |
| memset(ind_block,0,MINIX_BLOCK_SIZE); |
| for (i=0 ; i<512 ; i++) { |
| ind_block[i] = zone; |
| if (!NEXT_BAD) |
| goto end_bad; |
| } |
| inode->i_zone[8] = dind = get_free_block(ctl); |
| memset(dind_block,0,MINIX_BLOCK_SIZE); |
| for (i=0 ; i<512 ; i++) { |
| write_block(ctl, ind,(char *) ind_block); |
| dind_block[i] = ind = get_free_block(ctl); |
| memset(ind_block,0,MINIX_BLOCK_SIZE); |
| for (j=0 ; j<512 ; j++) { |
| ind_block[j] = zone; |
| if (!NEXT_BAD) |
| goto end_bad; |
| } |
| } |
| errx(MKFS_EX_ERROR, _("%s: too many bad blocks"), ctl->device_name); |
| end_bad: |
| if (ind) |
| write_block(ctl, ind, (char *) ind_block); |
| if (dind) |
| write_block(ctl, dind, (char *) dind_block); |
| } |
| |
| static void make_bad_inode_v2_v3 (struct fs_control *ctl) |
| { |
| struct minix2_inode *inode = &Inode2[MINIX_BAD_INO]; |
| int i, j, zone; |
| int ind = 0, dind = 0; |
| unsigned long ind_block[MINIX_BLOCK_SIZE >> 2]; |
| unsigned long dind_block[MINIX_BLOCK_SIZE >> 2]; |
| |
| if (!ctl->fs_bad_blocks) |
| return; |
| mark_inode (MINIX_BAD_INO); |
| inode->i_nlinks = 1; |
| inode->i_atime = inode->i_mtime = inode->i_ctime = mkfs_minix_time(NULL); |
| inode->i_mode = S_IFREG + 0000; |
| inode->i_size = ctl->fs_bad_blocks * MINIX_BLOCK_SIZE; |
| zone = next (0); |
| for (i = 0; i < 7; i++) { |
| inode->i_zone[i] = zone; |
| if (!NEXT_BAD) |
| goto end_bad; |
| } |
| inode->i_zone[7] = ind = get_free_block (ctl); |
| memset (ind_block, 0, MINIX_BLOCK_SIZE); |
| for (i = 0; i < 256; i++) { |
| ind_block[i] = zone; |
| if (!NEXT_BAD) |
| goto end_bad; |
| } |
| inode->i_zone[8] = dind = get_free_block (ctl); |
| memset (dind_block, 0, MINIX_BLOCK_SIZE); |
| for (i = 0; i < 256; i++) { |
| write_block (ctl, ind, (char *) ind_block); |
| dind_block[i] = ind = get_free_block (ctl); |
| memset (ind_block, 0, MINIX_BLOCK_SIZE); |
| for (j = 0; j < 256; j++) { |
| ind_block[j] = zone; |
| if (!NEXT_BAD) |
| goto end_bad; |
| } |
| } |
| /* Could make triple indirect block here */ |
| errx(MKFS_EX_ERROR, _("%s: too many bad blocks"), ctl->device_name); |
| end_bad: |
| if (ind) |
| write_block (ctl, ind, (char *) ind_block); |
| if (dind) |
| write_block (ctl, dind, (char *) dind_block); |
| } |
| |
| static void make_bad_inode(struct fs_control *ctl) |
| { |
| if (fs_version < 2) { |
| make_bad_inode_v1(ctl); |
| return; |
| } |
| make_bad_inode_v2_v3(ctl); |
| } |
| |
| static void make_root_inode_v1(struct fs_control *ctl) { |
| struct minix_inode * inode = &Inode[MINIX_ROOT_INO]; |
| |
| mark_inode(MINIX_ROOT_INO); |
| inode->i_zone[0] = get_free_block(ctl); |
| inode->i_nlinks = 2; |
| inode->i_time = mkfs_minix_time(NULL); |
| if (ctl->fs_bad_blocks) |
| inode->i_size = 3 * ctl->fs_dirsize; |
| else { |
| memset(&root_block[2 * ctl->fs_dirsize], 0, ctl->fs_dirsize); |
| inode->i_size = 2 * ctl->fs_dirsize; |
| } |
| inode->i_mode = S_IFDIR + 0755; |
| inode->i_uid = getuid(); |
| if (inode->i_uid) |
| inode->i_gid = getgid(); |
| write_block(ctl, inode->i_zone[0],root_block); |
| } |
| |
| static void make_root_inode_v2_v3 (struct fs_control *ctl) { |
| struct minix2_inode *inode = &Inode2[MINIX_ROOT_INO]; |
| |
| mark_inode (MINIX_ROOT_INO); |
| inode->i_zone[0] = get_free_block (ctl); |
| inode->i_nlinks = 2; |
| inode->i_atime = inode->i_mtime = inode->i_ctime = mkfs_minix_time(NULL); |
| |
| if (ctl->fs_bad_blocks) |
| inode->i_size = 3 * ctl->fs_dirsize; |
| else { |
| memset(&root_block[2 * ctl->fs_dirsize], 0, ctl->fs_dirsize); |
| inode->i_size = 2 * ctl->fs_dirsize; |
| } |
| |
| inode->i_mode = S_IFDIR + 0755; |
| inode->i_uid = getuid(); |
| if (inode->i_uid) |
| inode->i_gid = getgid(); |
| write_block (ctl, inode->i_zone[0], root_block); |
| } |
| |
| static void make_root_inode(struct fs_control *ctl) |
| { |
| char *tmp = root_block; |
| |
| if (fs_version == 3) { |
| *(uint32_t *) tmp = 1; |
| strcpy(tmp + 4, "."); |
| tmp += ctl->fs_dirsize; |
| *(uint32_t *) tmp = 1; |
| strcpy(tmp + 4, ".."); |
| tmp += ctl->fs_dirsize; |
| *(uint32_t *) tmp = 2; |
| strcpy(tmp + 4, ".badblocks"); |
| } else { |
| *(uint16_t *) tmp = 1; |
| strcpy(tmp + 2, "."); |
| tmp += ctl->fs_dirsize; |
| *(uint16_t *) tmp = 1; |
| strcpy(tmp + 2, ".."); |
| tmp += ctl->fs_dirsize; |
| *(uint16_t *) tmp = 2; |
| strcpy(tmp + 2, ".badblocks"); |
| } |
| if (fs_version < 2) { |
| make_root_inode_v1(ctl); |
| return; |
| } |
| make_root_inode_v2_v3(ctl); |
| } |
| |
| static void super_set_nzones(const struct fs_control *ctl) |
| { |
| switch (fs_version) { |
| case 3: |
| Super3.s_zones = ctl->fs_blocks; |
| break; |
| case 2: |
| Super.s_zones = ctl->fs_blocks; |
| break; |
| default: /* v1 */ |
| Super.s_nzones = ctl->fs_blocks; |
| break; |
| } |
| } |
| |
| static void super_init_maxsize(void) |
| { |
| switch (fs_version) { |
| case 3: |
| Super3.s_max_size = 2147483647L; |
| break; |
| case 2: |
| Super.s_max_size = 0x7fffffff; |
| break; |
| default: /* v1 */ |
| Super.s_max_size = (7+512+512*512)*1024; |
| break; |
| } |
| } |
| |
| static void super_set_map_blocks(const struct fs_control *ctl, unsigned long inodes) |
| { |
| switch (fs_version) { |
| case 3: |
| Super3.s_imap_blocks = UPPER(inodes + 1, BITS_PER_BLOCK); |
| Super3.s_zmap_blocks = UPPER(ctl->fs_blocks - (1 + get_nimaps() + inode_blocks()), |
| BITS_PER_BLOCK + 1); |
| Super3.s_firstdatazone = first_zone_data(); |
| break; |
| default: |
| Super.s_imap_blocks = UPPER(inodes + 1, BITS_PER_BLOCK); |
| Super.s_zmap_blocks = UPPER(ctl->fs_blocks - (1 + get_nimaps() + inode_blocks()), |
| BITS_PER_BLOCK + 1); |
| Super.s_firstdatazone = first_zone_data(); |
| break; |
| } |
| } |
| |
| static void super_set_magic(const struct fs_control *ctl) |
| { |
| switch (fs_version) { |
| case 3: |
| Super3.s_magic = ctl->fs_magic; |
| break; |
| default: |
| Super.s_magic = ctl->fs_magic; |
| break; |
| } |
| } |
| |
| static void setup_tables(const struct fs_control *ctl) { |
| unsigned long inodes, zmaps, imaps, zones, i; |
| |
| super_block_buffer = xcalloc(1, MINIX_BLOCK_SIZE); |
| |
| memset(boot_block_buffer,0,512); |
| super_set_magic(ctl); |
| |
| if (fs_version == 3) { |
| Super3.s_log_zone_size = 0; |
| Super3.s_blocksize = MINIX_BLOCK_SIZE; |
| } |
| else { |
| Super.s_log_zone_size = 0; |
| } |
| |
| super_init_maxsize(); |
| super_set_nzones(ctl); |
| zones = get_nzones(); |
| |
| /* some magic nrs: 1 inode / 3 blocks for smaller filesystems, |
| * for one inode / 16 blocks for large ones. mkfs will eventually |
| * crab about too far when getting close to the maximum size. */ |
| if (ctl->fs_inodes == 0) |
| if (2048 * 1024 < ctl->fs_blocks) /* 2GB */ |
| inodes = ctl->fs_blocks / 16; |
| else if (512 * 1024 < ctl->fs_blocks) /* 0.5GB */ |
| inodes = ctl->fs_blocks / 8; |
| else |
| inodes = ctl->fs_blocks / 3; |
| else |
| inodes = ctl->fs_inodes; |
| /* Round up inode count to fill block size */ |
| if (fs_version == 2 || fs_version == 3) |
| inodes = ((inodes + MINIX2_INODES_PER_BLOCK - 1) & |
| ~(MINIX2_INODES_PER_BLOCK - 1)); |
| else |
| inodes = ((inodes + MINIX_INODES_PER_BLOCK - 1) & |
| ~(MINIX_INODES_PER_BLOCK - 1)); |
| |
| if (fs_version == 3) |
| Super3.s_ninodes = inodes; |
| else { |
| if (inodes > MINIX_MAX_INODES) |
| inodes = MINIX_MAX_INODES; |
| Super.s_ninodes = inodes; |
| } |
| super_set_map_blocks(ctl, inodes); |
| if (MINIX_MAX_INODES < first_zone_data()) |
| errx(MKFS_EX_ERROR, |
| _("First data block at %jd, which is too far (max %d).\n" |
| "Try specifying fewer inodes by passing --inodes <num>"), |
| (intmax_t)first_zone_data(), |
| MINIX_MAX_INODES); |
| imaps = get_nimaps(); |
| zmaps = get_nzmaps(); |
| |
| inode_map = xmalloc(imaps * MINIX_BLOCK_SIZE); |
| zone_map = xmalloc(zmaps * MINIX_BLOCK_SIZE); |
| memset(inode_map,0xff,imaps * MINIX_BLOCK_SIZE); |
| memset(zone_map,0xff,zmaps * MINIX_BLOCK_SIZE); |
| |
| for (i = get_first_zone() ; i<zones ; i++) |
| unmark_zone(i); |
| for (i = MINIX_ROOT_INO ; i<=inodes; i++) |
| unmark_inode(i); |
| |
| inode_buffer = xmalloc(get_inode_buffer_size()); |
| memset(inode_buffer,0, get_inode_buffer_size()); |
| |
| printf(P_("%lu inode\n", "%lu inodes\n", inodes), inodes); |
| printf(P_("%lu block\n", "%lu blocks\n", zones), zones); |
| printf(_("Firstdatazone=%jd (%jd)\n"), |
| (intmax_t)get_first_zone(), (intmax_t)first_zone_data()); |
| printf(_("Zonesize=%zu\n"), (size_t) MINIX_BLOCK_SIZE << get_zone_size()); |
| printf(_("Maxsize=%zu\n\n"),get_max_size()); |
| } |
| |
| /* |
| * Perform a test of a block; return the number of |
| * blocks readable/writable. |
| */ |
| static size_t do_check(const struct fs_control *ctl, char * buffer, int try, unsigned int current_block) { |
| ssize_t got; |
| |
| /* Seek to the correct loc. */ |
| if (lseek(ctl->device_fd, current_block * MINIX_BLOCK_SIZE, SEEK_SET) != |
| current_block * MINIX_BLOCK_SIZE ) |
| err(MKFS_EX_ERROR, _("%s: seek failed during testing of blocks"), |
| ctl->device_name); |
| |
| /* Try the read */ |
| got = read(ctl->device_fd, buffer, try * MINIX_BLOCK_SIZE); |
| if (got < 0) got = 0; |
| if (got & (MINIX_BLOCK_SIZE - 1 )) { |
| printf(_("Weird values in do_check: probably bugs\n")); |
| } |
| got /= MINIX_BLOCK_SIZE; |
| return got; |
| } |
| |
| static unsigned int currently_testing = 0; |
| |
| static void alarm_intr(int alnum __attribute__ ((__unused__))) { |
| unsigned long zones = get_nzones(); |
| |
| if (currently_testing >= zones) |
| return; |
| signal(SIGALRM,alarm_intr); |
| alarm(5); |
| if (!currently_testing) |
| return; |
| printf("%d ...", currently_testing); |
| fflush(stdout); |
| } |
| |
| static void check_blocks(struct fs_control *ctl) { |
| size_t try, got; |
| static char buffer[MINIX_BLOCK_SIZE * TEST_BUFFER_BLOCKS]; |
| unsigned long zones = get_nzones(); |
| unsigned long first_zone = get_first_zone(); |
| |
| currently_testing=0; |
| signal(SIGALRM,alarm_intr); |
| alarm(5); |
| while (currently_testing < zones) { |
| if (lseek(ctl->device_fd, currently_testing * MINIX_BLOCK_SIZE,SEEK_SET) != |
| currently_testing*MINIX_BLOCK_SIZE) |
| errx(MKFS_EX_ERROR, _("%s: seek failed in check_blocks"), |
| ctl->device_name); |
| try = TEST_BUFFER_BLOCKS; |
| if (currently_testing + try > zones) |
| try = zones-currently_testing; |
| got = do_check(ctl, buffer, try, currently_testing); |
| currently_testing += got; |
| if (got == try) |
| continue; |
| if (currently_testing < first_zone) |
| errx(MKFS_EX_ERROR, _("%s: bad blocks before data-area: " |
| "cannot make fs"), ctl->device_name); |
| mark_zone(currently_testing); |
| ctl->fs_bad_blocks++; |
| currently_testing++; |
| } |
| if (ctl->fs_bad_blocks > 0) |
| printf(P_("%d bad block\n", "%d bad blocks\n", ctl->fs_bad_blocks), ctl->fs_bad_blocks); |
| } |
| |
| static void get_list_blocks(struct fs_control *ctl, char *filename) { |
| FILE *listfile; |
| unsigned long blockno; |
| |
| listfile = fopen(filename,"r"); |
| if (listfile == NULL) |
| err(MKFS_EX_ERROR, _("%s: can't open file of bad blocks"), |
| ctl->device_name); |
| |
| while (!feof(listfile)) { |
| if (fscanf(listfile,"%lu\n", &blockno) != 1) { |
| printf(_("badblock number input error on line %d\n"), ctl->fs_bad_blocks + 1); |
| errx(MKFS_EX_ERROR, _("%s: cannot read badblocks file"), |
| ctl->device_name); |
| } |
| mark_zone(blockno); |
| ctl->fs_bad_blocks++; |
| } |
| fclose(listfile); |
| |
| if (ctl->fs_bad_blocks > 0) |
| printf(P_("%d bad block\n", "%d bad blocks\n", ctl->fs_bad_blocks), ctl->fs_bad_blocks); |
| } |
| |
| static int find_super_magic(const struct fs_control *ctl) |
| { |
| switch (fs_version) { |
| case 1: |
| if (ctl->fs_namelen == 14) |
| return MINIX_SUPER_MAGIC; |
| return MINIX_SUPER_MAGIC2; |
| case 2: |
| if (ctl->fs_namelen == 14) |
| return MINIX2_SUPER_MAGIC; |
| return MINIX2_SUPER_MAGIC2; |
| case 3: |
| return MINIX3_SUPER_MAGIC; |
| default: |
| abort(); |
| } |
| } |
| |
| static void determine_device_blocks(struct fs_control *ctl, const struct stat *statbuf) |
| { |
| unsigned long long dev_blocks = 0; |
| |
| if (S_ISBLK(statbuf->st_mode)) { |
| int sectorsize; |
| |
| if (blkdev_get_sector_size(ctl->device_fd, §orsize) == -1) |
| sectorsize = DEFAULT_SECTOR_SIZE; /* kernel < 2.3.3 */ |
| if (MINIX_BLOCK_SIZE < sectorsize) |
| errx(MKFS_EX_ERROR, _("block size smaller than physical " |
| "sector size of %s"), ctl->device_name); |
| if (blkdev_get_size(ctl->device_fd, &dev_blocks) == -1) |
| errx(MKFS_EX_ERROR, _("cannot determine size of %s"), ctl->device_name); |
| dev_blocks /= MINIX_BLOCK_SIZE; |
| } else if (!S_ISBLK(statbuf->st_mode)) |
| dev_blocks = statbuf->st_size / MINIX_BLOCK_SIZE; |
| if (!ctl->fs_blocks) |
| ctl->fs_blocks = dev_blocks; |
| else if (dev_blocks < ctl->fs_blocks) |
| errx(MKFS_EX_ERROR, |
| _("%s: requested blocks (%llu) exceeds available (%llu) blocks\n"), |
| ctl->device_name, ctl->fs_blocks, dev_blocks); |
| if (ctl->fs_blocks < 10) |
| errx(MKFS_EX_ERROR, _("%s: number of blocks too small"), ctl->device_name); |
| if (fs_version == 1 && ctl->fs_blocks > MINIX_MAX_INODES) |
| ctl->fs_blocks = MINIX_MAX_INODES; |
| if (ctl->fs_blocks > (4 + ((MINIX_MAX_INODES - 4) * BITS_PER_BLOCK))) |
| ctl->fs_blocks = 4 + ((MINIX_MAX_INODES - 4) * BITS_PER_BLOCK); /* Utter maximum: Clip. */ |
| } |
| |
| static void check_user_instructions(struct fs_control *ctl) |
| { |
| switch (fs_version) { |
| case 1: |
| case 2: |
| if (ctl->fs_namelen == 14 || ctl->fs_namelen == 30) |
| ctl->fs_dirsize = ctl->fs_namelen + 2; |
| else |
| errx(MKFS_EX_ERROR, _("unsupported name length: %d"), ctl->fs_namelen); |
| break; |
| case 3: |
| if (ctl->fs_namelen == 60) |
| ctl->fs_dirsize = ctl->fs_namelen + 4; |
| else |
| errx(MKFS_EX_ERROR, _("unsupported name length: %d"), ctl->fs_namelen); |
| break; |
| default: |
| errx(MKFS_EX_ERROR, _("unsupported minix file system version: %d"), fs_version); |
| } |
| ctl->fs_magic = find_super_magic(ctl); |
| } |
| |
| int main(int argc, char ** argv) |
| { |
| struct fs_control ctl = { |
| .fs_namelen = 30, /* keep in sync with DEFAULT_FS_VERSION */ |
| 0 |
| }; |
| int i; |
| struct stat statbuf; |
| char * listfile = NULL; |
| static const struct option longopts[] = { |
| {"namelength", required_argument, NULL, 'n'}, |
| {"inodes", required_argument, NULL, 'i'}, |
| {"check", no_argument, NULL, 'c'}, |
| {"badblocks", required_argument, NULL, 'l'}, |
| {"version", no_argument, NULL, 'V'}, |
| {"help", no_argument, NULL, 'h'}, |
| {NULL, 0, NULL, 0} |
| }; |
| |
| setlocale(LC_ALL, ""); |
| bindtextdomain(PACKAGE, LOCALEDIR); |
| textdomain(PACKAGE); |
| close_stdout_atexit(); |
| |
| strutils_set_exitcode(MKFS_EX_USAGE); |
| |
| while ((i = getopt_long(argc, argv, "1v23n:i:cl:Vh", longopts, NULL)) != -1) |
| switch (i) { |
| case '1': |
| fs_version = 1; |
| break; |
| case 'v': /* kept for backwards compatibility */ |
| warnx(_("-v is ambiguous, use '-2' instead")); |
| /* fallthrough */ |
| case '2': |
| fs_version = 2; |
| break; |
| case '3': |
| fs_version = 3; |
| ctl.fs_namelen = 60; |
| break; |
| case 'n': |
| ctl.fs_namelen = strtou16_or_err(optarg, |
| _("failed to parse maximum length of filenames")); |
| break; |
| case 'i': |
| ctl.fs_inodes = strtoul_or_err(optarg, |
| _("failed to parse number of inodes")); |
| break; |
| case 'c': |
| ctl.check_blocks = 1; |
| break; |
| case 'l': |
| listfile = optarg; |
| break; |
| case 'V': |
| print_version(MKFS_EX_OK); |
| case 'h': |
| usage(); |
| default: |
| errtryhelp(MKFS_EX_USAGE); |
| } |
| argc -= optind; |
| argv += optind; |
| if (argc > 0) { |
| ctl.device_name = argv[0]; |
| argc--; |
| argv++; |
| } |
| if (argc > 0) |
| ctl.fs_blocks = strtoul_or_err(argv[0], _("failed to parse number of blocks")); |
| |
| if (!ctl.device_name) { |
| warnx(_("no device specified")); |
| errtryhelp(MKFS_EX_USAGE); |
| } |
| check_user_instructions(&ctl); |
| if (is_mounted(ctl.device_name)) |
| errx(MKFS_EX_ERROR, _("%s is mounted; will not make a filesystem here!"), |
| ctl.device_name); |
| if (stat(ctl.device_name, &statbuf) < 0) |
| err(MKFS_EX_ERROR, _("stat of %s failed"), ctl.device_name); |
| ctl.device_fd = open_blkdev_or_file(&statbuf, ctl.device_name, O_RDWR); |
| if (ctl.device_fd < 0) |
| err(MKFS_EX_ERROR, _("cannot open %s"), ctl.device_name); |
| determine_device_blocks(&ctl, &statbuf); |
| setup_tables(&ctl); |
| if (ctl.check_blocks) |
| check_blocks(&ctl); |
| else if (listfile) |
| get_list_blocks(&ctl, listfile); |
| |
| make_root_inode(&ctl); |
| make_bad_inode(&ctl); |
| |
| mark_good_blocks(&ctl); |
| write_tables(&ctl); |
| if (close_fd(ctl.device_fd) != 0) |
| err(MKFS_EX_ERROR, _("write failed")); |
| |
| return MKFS_EX_OK; |
| } |