| /* vi: set sw=4 ts=4: */ |
| /* |
| * mkfs.c - make a linux (minix) file-system. |
| * |
| * (C) 1991 Linus Torvalds. |
| * |
| * Licensed under GPLv2, see file LICENSE in this tarball for details. |
| */ |
| |
| /* |
| * 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) |
| * |
| * Usage: mkfs [-c | -l filename ] [-v] [-nXX] [-iXX] device [size-in-blocks] |
| * |
| * -c for readability checking (SLOW!) |
| * -l for getting a list of bad blocks from a file. |
| * -n for namelength (currently the kernel only uses 14 or 30) |
| * -i for number of inodes |
| * -v for v2 filesystem |
| * |
| * The device may be a block device or a image of one, but this isn't |
| * enforced (but it's not much fun on a character device :-). |
| * |
| * Modified for BusyBox by Erik Andersen <andersen@debian.org> -- |
| * removed getopt based parser and added a hand rolled one. |
| */ |
| |
| #include "libbb.h" |
| #include <mntent.h> |
| |
| #include "minix.h" |
| |
| /* Store the very same times/uids/gids for image consistency */ |
| #if 1 |
| # define CUR_TIME 0 |
| # define GETUID 0 |
| # define GETGID 0 |
| #else |
| /* Was using this. Is it useful? NB: this will break testsuite */ |
| # define CUR_TIME time(NULL) |
| # define GETUID getuid() |
| # define GETGID getgid() |
| #endif |
| |
| enum { |
| MAX_GOOD_BLOCKS = 512, |
| TEST_BUFFER_BLOCKS = 16, |
| }; |
| |
| #if !ENABLE_FEATURE_MINIX2 |
| enum { version2 = 0 }; |
| #endif |
| |
| enum { dev_fd = 3 }; |
| |
| struct globals { |
| #if ENABLE_FEATURE_MINIX2 |
| smallint version2; |
| #define version2 G.version2 |
| #endif |
| char *device_name; |
| uint32_t total_blocks; |
| int badblocks; |
| int namelen; |
| int dirsize; |
| int magic; |
| char *inode_buffer; |
| char *inode_map; |
| char *zone_map; |
| int used_good_blocks; |
| unsigned long req_nr_inodes; |
| unsigned currently_testing; |
| |
| char root_block[BLOCK_SIZE]; |
| char superblock_buffer[BLOCK_SIZE]; |
| char boot_block_buffer[512]; |
| unsigned short good_blocks_table[MAX_GOOD_BLOCKS]; |
| /* check_blocks(): buffer[] was the biggest static in entire bbox */ |
| char check_blocks_buffer[BLOCK_SIZE * TEST_BUFFER_BLOCKS]; |
| |
| unsigned short ind_block1[BLOCK_SIZE >> 1]; |
| unsigned short dind_block1[BLOCK_SIZE >> 1]; |
| unsigned long ind_block2[BLOCK_SIZE >> 2]; |
| unsigned long dind_block2[BLOCK_SIZE >> 2]; |
| }; |
| #define G (*ptr_to_globals) |
| #define INIT_G() do { \ |
| SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \ |
| } while (0) |
| |
| static ALWAYS_INLINE unsigned div_roundup(unsigned size, unsigned n) |
| { |
| return (size + n-1) / n; |
| } |
| |
| #define INODE_BUF1 (((struct minix1_inode*)G.inode_buffer) - 1) |
| #define INODE_BUF2 (((struct minix2_inode*)G.inode_buffer) - 1) |
| |
| #define SB (*(struct minix_superblock*)G.superblock_buffer) |
| |
| #define SB_INODES (SB.s_ninodes) |
| #define SB_IMAPS (SB.s_imap_blocks) |
| #define SB_ZMAPS (SB.s_zmap_blocks) |
| #define SB_FIRSTZONE (SB.s_firstdatazone) |
| #define SB_ZONE_SIZE (SB.s_log_zone_size) |
| #define SB_MAXSIZE (SB.s_max_size) |
| #define SB_MAGIC (SB.s_magic) |
| |
| #if !ENABLE_FEATURE_MINIX2 |
| # define SB_ZONES (SB.s_nzones) |
| # define INODE_BLOCKS div_roundup(SB_INODES, MINIX1_INODES_PER_BLOCK) |
| #else |
| # define SB_ZONES (version2 ? SB.s_zones : SB.s_nzones) |
| # define INODE_BLOCKS div_roundup(SB_INODES, \ |
| (version2 ? MINIX2_INODES_PER_BLOCK : MINIX1_INODES_PER_BLOCK)) |
| #endif |
| |
| #define INODE_BUFFER_SIZE (INODE_BLOCKS * BLOCK_SIZE) |
| #define NORM_FIRSTZONE (2 + SB_IMAPS + SB_ZMAPS + INODE_BLOCKS) |
| |
| /* Before you ask "where they come from?": */ |
| /* setbit/clrbit are supplied by sys/param.h */ |
| |
| static int minix_bit(const char* a, unsigned i) |
| { |
| return a[i >> 3] & (1<<(i & 7)); |
| } |
| |
| static void minix_setbit(char *a, unsigned i) |
| { |
| setbit(a, i); |
| } |
| static void minix_clrbit(char *a, unsigned i) |
| { |
| clrbit(a, i); |
| } |
| |
| /* Note: do not assume 0/1, it is 0/nonzero */ |
| #define zone_in_use(x) minix_bit(G.zone_map,(x)-SB_FIRSTZONE+1) |
| /*#define inode_in_use(x) minix_bit(G.inode_map,(x))*/ |
| |
| #define mark_inode(x) minix_setbit(G.inode_map,(x)) |
| #define unmark_inode(x) minix_clrbit(G.inode_map,(x)) |
| #define mark_zone(x) minix_setbit(G.zone_map,(x)-SB_FIRSTZONE+1) |
| #define unmark_zone(x) minix_clrbit(G.zone_map,(x)-SB_FIRSTZONE+1) |
| |
| #ifndef BLKGETSIZE |
| # define BLKGETSIZE _IO(0x12,96) /* return device size */ |
| #endif |
| |
| |
| static long valid_offset(int fd, int offset) |
| { |
| char ch; |
| |
| if (lseek(fd, offset, SEEK_SET) < 0) |
| return 0; |
| if (read(fd, &ch, 1) < 1) |
| return 0; |
| return 1; |
| } |
| |
| static int count_blocks(int fd) |
| { |
| int high, low; |
| |
| low = 0; |
| for (high = 1; valid_offset(fd, high); high *= 2) |
| low = high; |
| |
| while (low < high - 1) { |
| const int mid = (low + high) / 2; |
| |
| if (valid_offset(fd, mid)) |
| low = mid; |
| else |
| high = mid; |
| } |
| valid_offset(fd, 0); |
| return (low + 1); |
| } |
| |
| static int get_size(const char *file) |
| { |
| int fd; |
| long size; |
| |
| fd = xopen(file, O_RDWR); |
| if (ioctl(fd, BLKGETSIZE, &size) >= 0) { |
| close(fd); |
| return (size * 512); |
| } |
| |
| size = count_blocks(fd); |
| close(fd); |
| return size; |
| } |
| |
| static void write_tables(void) |
| { |
| /* Mark the superblock valid. */ |
| SB.s_state |= MINIX_VALID_FS; |
| SB.s_state &= ~MINIX_ERROR_FS; |
| |
| msg_eol = "seek to 0 failed"; |
| xlseek(dev_fd, 0, SEEK_SET); |
| |
| msg_eol = "can't clear boot sector"; |
| xwrite(dev_fd, G.boot_block_buffer, 512); |
| |
| msg_eol = "seek to BLOCK_SIZE failed"; |
| xlseek(dev_fd, BLOCK_SIZE, SEEK_SET); |
| |
| msg_eol = "can't write superblock"; |
| xwrite(dev_fd, G.superblock_buffer, BLOCK_SIZE); |
| |
| msg_eol = "can't write inode map"; |
| xwrite(dev_fd, G.inode_map, SB_IMAPS * BLOCK_SIZE); |
| |
| msg_eol = "can't write zone map"; |
| xwrite(dev_fd, G.zone_map, SB_ZMAPS * BLOCK_SIZE); |
| |
| msg_eol = "can't write inodes"; |
| xwrite(dev_fd, G.inode_buffer, INODE_BUFFER_SIZE); |
| |
| msg_eol = "\n"; |
| } |
| |
| static void write_block(int blk, char *buffer) |
| { |
| xlseek(dev_fd, blk * BLOCK_SIZE, SEEK_SET); |
| xwrite(dev_fd, buffer, BLOCK_SIZE); |
| } |
| |
| static int get_free_block(void) |
| { |
| int blk; |
| |
| if (G.used_good_blocks + 1 >= MAX_GOOD_BLOCKS) |
| bb_error_msg_and_die("too many bad blocks"); |
| if (G.used_good_blocks) |
| blk = G.good_blocks_table[G.used_good_blocks - 1] + 1; |
| else |
| blk = SB_FIRSTZONE; |
| while (blk < SB_ZONES && zone_in_use(blk)) |
| blk++; |
| if (blk >= SB_ZONES) |
| bb_error_msg_and_die("not enough good blocks"); |
| G.good_blocks_table[G.used_good_blocks] = blk; |
| G.used_good_blocks++; |
| return blk; |
| } |
| |
| static void mark_good_blocks(void) |
| { |
| int blk; |
| |
| for (blk = 0; blk < G.used_good_blocks; blk++) |
| mark_zone(G.good_blocks_table[blk]); |
| } |
| |
| static int next(int zone) |
| { |
| if (!zone) |
| zone = SB_FIRSTZONE - 1; |
| while (++zone < SB_ZONES) |
| if (zone_in_use(zone)) |
| return zone; |
| return 0; |
| } |
| |
| static void make_bad_inode(void) |
| { |
| struct minix1_inode *inode = &INODE_BUF1[MINIX_BAD_INO]; |
| int i, j, zone; |
| int ind = 0, dind = 0; |
| /* moved to globals to reduce stack usage |
| unsigned short ind_block[BLOCK_SIZE >> 1]; |
| unsigned short dind_block[BLOCK_SIZE >> 1]; |
| */ |
| #define ind_block (G.ind_block1) |
| #define dind_block (G.dind_block1) |
| |
| #define NEXT_BAD (zone = next(zone)) |
| |
| if (!G.badblocks) |
| return; |
| mark_inode(MINIX_BAD_INO); |
| inode->i_nlinks = 1; |
| /* BTW, setting this makes all images different */ |
| /* it's harder to check for bugs then - diff isn't helpful :(... */ |
| inode->i_time = CUR_TIME; |
| inode->i_mode = S_IFREG + 0000; |
| inode->i_size = G.badblocks * 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(); |
| memset(ind_block, 0, 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(); |
| memset(dind_block, 0, BLOCK_SIZE); |
| for (i = 0; i < 512; i++) { |
| write_block(ind, (char *) ind_block); |
| dind_block[i] = ind = get_free_block(); |
| memset(ind_block, 0, BLOCK_SIZE); |
| for (j = 0; j < 512; j++) { |
| ind_block[j] = zone; |
| if (!NEXT_BAD) |
| goto end_bad; |
| } |
| } |
| bb_error_msg_and_die("too many bad blocks"); |
| end_bad: |
| if (ind) |
| write_block(ind, (char *) ind_block); |
| if (dind) |
| write_block(dind, (char *) dind_block); |
| #undef ind_block |
| #undef dind_block |
| } |
| |
| #if ENABLE_FEATURE_MINIX2 |
| static void make_bad_inode2(void) |
| { |
| struct minix2_inode *inode = &INODE_BUF2[MINIX_BAD_INO]; |
| int i, j, zone; |
| int ind = 0, dind = 0; |
| /* moved to globals to reduce stack usage |
| unsigned long ind_block[BLOCK_SIZE >> 2]; |
| unsigned long dind_block[BLOCK_SIZE >> 2]; |
| */ |
| #define ind_block (G.ind_block2) |
| #define dind_block (G.dind_block2) |
| |
| if (!G.badblocks) |
| return; |
| mark_inode(MINIX_BAD_INO); |
| inode->i_nlinks = 1; |
| inode->i_atime = inode->i_mtime = inode->i_ctime = CUR_TIME; |
| inode->i_mode = S_IFREG + 0000; |
| inode->i_size = G.badblocks * 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(); |
| memset(ind_block, 0, 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(); |
| memset(dind_block, 0, BLOCK_SIZE); |
| for (i = 0; i < 256; i++) { |
| write_block(ind, (char *) ind_block); |
| dind_block[i] = ind = get_free_block(); |
| memset(ind_block, 0, BLOCK_SIZE); |
| for (j = 0; j < 256; j++) { |
| ind_block[j] = zone; |
| if (!NEXT_BAD) |
| goto end_bad; |
| } |
| } |
| /* Could make triple indirect block here */ |
| bb_error_msg_and_die("too many bad blocks"); |
| end_bad: |
| if (ind) |
| write_block(ind, (char *) ind_block); |
| if (dind) |
| write_block(dind, (char *) dind_block); |
| #undef ind_block |
| #undef dind_block |
| } |
| #else |
| void make_bad_inode2(void); |
| #endif |
| |
| static void make_root_inode(void) |
| { |
| struct minix1_inode *inode = &INODE_BUF1[MINIX_ROOT_INO]; |
| |
| mark_inode(MINIX_ROOT_INO); |
| inode->i_zone[0] = get_free_block(); |
| inode->i_nlinks = 2; |
| inode->i_time = CUR_TIME; |
| if (G.badblocks) |
| inode->i_size = 3 * G.dirsize; |
| else { |
| G.root_block[2 * G.dirsize] = '\0'; |
| G.root_block[2 * G.dirsize + 1] = '\0'; |
| inode->i_size = 2 * G.dirsize; |
| } |
| inode->i_mode = S_IFDIR + 0755; |
| inode->i_uid = GETUID; |
| if (inode->i_uid) |
| inode->i_gid = GETGID; |
| write_block(inode->i_zone[0], G.root_block); |
| } |
| |
| #if ENABLE_FEATURE_MINIX2 |
| static void make_root_inode2(void) |
| { |
| struct minix2_inode *inode = &INODE_BUF2[MINIX_ROOT_INO]; |
| |
| mark_inode(MINIX_ROOT_INO); |
| inode->i_zone[0] = get_free_block(); |
| inode->i_nlinks = 2; |
| inode->i_atime = inode->i_mtime = inode->i_ctime = CUR_TIME; |
| if (G.badblocks) |
| inode->i_size = 3 * G.dirsize; |
| else { |
| G.root_block[2 * G.dirsize] = '\0'; |
| G.root_block[2 * G.dirsize + 1] = '\0'; |
| inode->i_size = 2 * G.dirsize; |
| } |
| inode->i_mode = S_IFDIR + 0755; |
| inode->i_uid = GETUID; |
| if (inode->i_uid) |
| inode->i_gid = GETGID; |
| write_block(inode->i_zone[0], G.root_block); |
| } |
| #else |
| void make_root_inode2(void); |
| #endif |
| |
| /* |
| * Perform a test of a block; return the number of |
| * blocks readable. |
| */ |
| static size_t do_check(char *buffer, size_t try, unsigned current_block) |
| { |
| ssize_t got; |
| |
| /* Seek to the correct loc. */ |
| msg_eol = "seek failed during testing of blocks"; |
| xlseek(dev_fd, current_block * BLOCK_SIZE, SEEK_SET); |
| msg_eol = "\n"; |
| |
| /* Try the read */ |
| got = read(dev_fd, buffer, try * BLOCK_SIZE); |
| if (got < 0) |
| got = 0; |
| try = ((size_t)got) / BLOCK_SIZE; |
| |
| if (got & (BLOCK_SIZE - 1)) |
| fprintf(stderr, "Short read at block %u\n", (unsigned)(current_block + try)); |
| return try; |
| } |
| |
| static void alarm_intr(int alnum UNUSED_PARAM) |
| { |
| if (G.currently_testing >= SB_ZONES) |
| return; |
| signal(SIGALRM, alarm_intr); |
| alarm(5); |
| if (!G.currently_testing) |
| return; |
| printf("%d ...", G.currently_testing); |
| fflush_all(); |
| } |
| |
| static void check_blocks(void) |
| { |
| size_t try, got; |
| |
| G.currently_testing = 0; |
| signal(SIGALRM, alarm_intr); |
| alarm(5); |
| while (G.currently_testing < SB_ZONES) { |
| msg_eol = "seek failed in check_blocks"; |
| xlseek(dev_fd, G.currently_testing * BLOCK_SIZE, SEEK_SET); |
| msg_eol = "\n"; |
| try = TEST_BUFFER_BLOCKS; |
| if (G.currently_testing + try > SB_ZONES) |
| try = SB_ZONES - G.currently_testing; |
| got = do_check(G.check_blocks_buffer, try, G.currently_testing); |
| G.currently_testing += got; |
| if (got == try) |
| continue; |
| if (G.currently_testing < SB_FIRSTZONE) |
| bb_error_msg_and_die("bad blocks before data-area: cannot make fs"); |
| mark_zone(G.currently_testing); |
| G.badblocks++; |
| G.currently_testing++; |
| } |
| alarm(0); |
| printf("%d bad block(s)\n", G.badblocks); |
| } |
| |
| static void get_list_blocks(char *filename) |
| { |
| FILE *listfile; |
| unsigned long blockno; |
| |
| listfile = xfopen_for_read(filename); |
| while (!feof(listfile)) { |
| fscanf(listfile, "%ld\n", &blockno); |
| mark_zone(blockno); |
| G.badblocks++; |
| } |
| printf("%d bad block(s)\n", G.badblocks); |
| } |
| |
| static void setup_tables(void) |
| { |
| unsigned long inodes; |
| unsigned norm_firstzone; |
| unsigned sb_zmaps; |
| unsigned i; |
| |
| /* memset(G.superblock_buffer, 0, BLOCK_SIZE); */ |
| /* memset(G.boot_block_buffer, 0, 512); */ |
| SB_MAGIC = G.magic; |
| SB_ZONE_SIZE = 0; |
| SB_MAXSIZE = version2 ? 0x7fffffff : (7 + 512 + 512 * 512) * 1024; |
| if (version2) |
| SB.s_zones = G.total_blocks; |
| else |
| SB.s_nzones = G.total_blocks; |
| |
| /* some magic nrs: 1 inode / 3 blocks */ |
| if (G.req_nr_inodes == 0) |
| inodes = G.total_blocks / 3; |
| else |
| inodes = G.req_nr_inodes; |
| /* Round up inode count to fill block size */ |
| if (version2) |
| inodes = (inodes + MINIX2_INODES_PER_BLOCK - 1) & |
| ~(MINIX2_INODES_PER_BLOCK - 1); |
| else |
| inodes = (inodes + MINIX1_INODES_PER_BLOCK - 1) & |
| ~(MINIX1_INODES_PER_BLOCK - 1); |
| if (inodes > 65535) |
| inodes = 65535; |
| SB_INODES = inodes; |
| SB_IMAPS = div_roundup(SB_INODES + 1, BITS_PER_BLOCK); |
| |
| /* Real bad hack but overwise mkfs.minix can be thrown |
| * in infinite loop... |
| * try: |
| * dd if=/dev/zero of=test.fs count=10 bs=1024 |
| * mkfs.minix -i 200 test.fs |
| */ |
| /* This code is not insane: NORM_FIRSTZONE is not a constant, |
| * it is calculated from SB_INODES, SB_IMAPS and SB_ZMAPS */ |
| i = 999; |
| SB_ZMAPS = 0; |
| do { |
| norm_firstzone = NORM_FIRSTZONE; |
| sb_zmaps = div_roundup(G.total_blocks - norm_firstzone + 1, BITS_PER_BLOCK); |
| if (SB_ZMAPS == sb_zmaps) goto got_it; |
| SB_ZMAPS = sb_zmaps; |
| /* new SB_ZMAPS, need to recalc NORM_FIRSTZONE */ |
| } while (--i); |
| bb_error_msg_and_die("incompatible size/inode count, try different -i N"); |
| got_it: |
| |
| SB_FIRSTZONE = norm_firstzone; |
| G.inode_map = xmalloc(SB_IMAPS * BLOCK_SIZE); |
| G.zone_map = xmalloc(SB_ZMAPS * BLOCK_SIZE); |
| memset(G.inode_map, 0xff, SB_IMAPS * BLOCK_SIZE); |
| memset(G.zone_map, 0xff, SB_ZMAPS * BLOCK_SIZE); |
| for (i = SB_FIRSTZONE; i < SB_ZONES; i++) |
| unmark_zone(i); |
| for (i = MINIX_ROOT_INO; i <= SB_INODES; i++) |
| unmark_inode(i); |
| G.inode_buffer = xzalloc(INODE_BUFFER_SIZE); |
| printf("%ld inodes\n", (long)SB_INODES); |
| printf("%ld blocks\n", (long)SB_ZONES); |
| printf("Firstdatazone=%ld (%ld)\n", (long)SB_FIRSTZONE, (long)norm_firstzone); |
| printf("Zonesize=%d\n", BLOCK_SIZE << SB_ZONE_SIZE); |
| printf("Maxsize=%ld\n", (long)SB_MAXSIZE); |
| } |
| |
| int mkfs_minix_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
| int mkfs_minix_main(int argc UNUSED_PARAM, char **argv) |
| { |
| unsigned opt; |
| char *tmp; |
| struct stat statbuf; |
| char *str_i; |
| char *listfile = NULL; |
| |
| INIT_G(); |
| /* default (changed to 30, per Linus's suggestion, Sun Nov 21 08:05:07 1993) */ |
| G.namelen = 30; |
| G.dirsize = 32; |
| G.magic = MINIX1_SUPER_MAGIC2; |
| |
| if (INODE_SIZE1 * MINIX1_INODES_PER_BLOCK != BLOCK_SIZE) |
| bb_error_msg_and_die("bad inode size"); |
| #if ENABLE_FEATURE_MINIX2 |
| if (INODE_SIZE2 * MINIX2_INODES_PER_BLOCK != BLOCK_SIZE) |
| bb_error_msg_and_die("bad inode size"); |
| #endif |
| |
| opt_complementary = "n+"; /* -n N */ |
| opt = getopt32(argv, "ci:l:n:v", &str_i, &listfile, &G.namelen); |
| argv += optind; |
| //if (opt & 1) -c |
| if (opt & 2) G.req_nr_inodes = xatoul(str_i); // -i |
| //if (opt & 4) -l |
| if (opt & 8) { // -n |
| if (G.namelen == 14) G.magic = MINIX1_SUPER_MAGIC; |
| else if (G.namelen == 30) G.magic = MINIX1_SUPER_MAGIC2; |
| else bb_show_usage(); |
| G.dirsize = G.namelen + 2; |
| } |
| if (opt & 0x10) { // -v |
| #if ENABLE_FEATURE_MINIX2 |
| version2 = 1; |
| #else |
| bb_error_msg_and_die("not compiled with minix v2 support"); |
| #endif |
| } |
| |
| G.device_name = *argv++; |
| if (!G.device_name) |
| bb_show_usage(); |
| if (*argv) |
| G.total_blocks = xatou32(*argv); |
| else |
| G.total_blocks = get_size(G.device_name) / 1024; |
| |
| if (G.total_blocks < 10) |
| bb_error_msg_and_die("must have at least 10 blocks"); |
| |
| if (version2) { |
| G.magic = MINIX2_SUPER_MAGIC2; |
| if (G.namelen == 14) |
| G.magic = MINIX2_SUPER_MAGIC; |
| } else if (G.total_blocks > 65535) |
| G.total_blocks = 65535; |
| |
| /* Check if it is mounted */ |
| if (find_mount_point(G.device_name, 0)) |
| bb_error_msg_and_die("can't format mounted filesystem"); |
| |
| xmove_fd(xopen(G.device_name, O_RDWR), dev_fd); |
| if (fstat(dev_fd, &statbuf) < 0) |
| bb_error_msg_and_die("can't stat '%s'", G.device_name); |
| if (!S_ISBLK(statbuf.st_mode)) |
| opt &= ~1; // clear -c (check) |
| |
| /* I don't know why someone has special code to prevent mkfs.minix |
| * on IDE devices. Why IDE but not SCSI, etc?... */ |
| #if 0 |
| else if (statbuf.st_rdev == 0x0300 || statbuf.st_rdev == 0x0340) |
| /* what is this? */ |
| bb_error_msg_and_die("will not try " |
| "to make filesystem on '%s'", G.device_name); |
| #endif |
| |
| tmp = G.root_block; |
| *(short *) tmp = 1; |
| strcpy(tmp + 2, "."); |
| tmp += G.dirsize; |
| *(short *) tmp = 1; |
| strcpy(tmp + 2, ".."); |
| tmp += G.dirsize; |
| *(short *) tmp = 2; |
| strcpy(tmp + 2, ".badblocks"); |
| |
| setup_tables(); |
| |
| if (opt & 1) // -c ? |
| check_blocks(); |
| else if (listfile) |
| get_list_blocks(listfile); |
| |
| if (version2) { |
| make_root_inode2(); |
| make_bad_inode2(); |
| } else { |
| make_root_inode(); |
| make_bad_inode(); |
| } |
| |
| mark_good_blocks(); |
| write_tables(); |
| return 0; |
| } |