From 4aca87515a5083ae0e31ce3177189fd43b6d05ac Mon Sep 17 00:00:00 2001 From: Andreas Baumann Date: Sat, 3 Jan 2015 13:58:15 +0100 Subject: patch to Vanilla Tomato 1.28 --- release/src/router/busybox/mkfs_minix.c | 853 -------------------------------- 1 file changed, 853 deletions(-) delete mode 100644 release/src/router/busybox/mkfs_minix.c (limited to 'release/src/router/busybox/mkfs_minix.c') diff --git a/release/src/router/busybox/mkfs_minix.c b/release/src/router/busybox/mkfs_minix.c deleted file mode 100644 index 70374eae..00000000 --- a/release/src/router/busybox/mkfs_minix.c +++ /dev/null @@ -1,853 +0,0 @@ -/* vi: set sw=4 ts=4: */ -/* - * mkfs.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) - * - * Usage: mkfs [-c | -l filename ] [-v] [-nXX] [-iXX] device [size-in-blocks] - * - * -c for readablility 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 -- - * removed getopt based parser and added a hand rolled one. - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include "busybox.h" - - -typedef unsigned char u8; -typedef unsigned short u16; -typedef unsigned int u32; - - -#define MINIX_ROOT_INO 1 -#define MINIX_LINK_MAX 250 -#define MINIX2_LINK_MAX 65530 - -#define MINIX_I_MAP_SLOTS 8 -#define MINIX_Z_MAP_SLOTS 64 -#define MINIX_SUPER_MAGIC 0x137F /* original minix fs */ -#define MINIX_SUPER_MAGIC2 0x138F /* minix fs, 30 char names */ -#define MINIX2_SUPER_MAGIC 0x2468 /* minix V2 fs */ -#define MINIX2_SUPER_MAGIC2 0x2478 /* minix V2 fs, 30 char names */ -#define MINIX_VALID_FS 0x0001 /* Clean fs. */ -#define MINIX_ERROR_FS 0x0002 /* fs has errors. */ - -#define MINIX_INODES_PER_BLOCK ((BLOCK_SIZE)/(sizeof (struct minix_inode))) -#define MINIX2_INODES_PER_BLOCK ((BLOCK_SIZE)/(sizeof (struct minix2_inode))) - -#define MINIX_V1 0x0001 /* original minix fs */ -#define MINIX_V2 0x0002 /* minix V2 fs */ - -#define INODE_VERSION(inode) inode->i_sb->u.minix_sb.s_version - -/* - * This is the original minix inode layout on disk. - * Note the 8-bit gid and atime and ctime. - */ -struct minix_inode { - u16 i_mode; - u16 i_uid; - u32 i_size; - u32 i_time; - u8 i_gid; - u8 i_nlinks; - u16 i_zone[9]; -}; - -/* - * The new minix inode has all the time entries, as well as - * long block numbers and a third indirect block (7+1+1+1 - * instead of 7+1+1). Also, some previously 8-bit values are - * now 16-bit. The inode is now 64 bytes instead of 32. - */ -struct minix2_inode { - u16 i_mode; - u16 i_nlinks; - u16 i_uid; - u16 i_gid; - u32 i_size; - u32 i_atime; - u32 i_mtime; - u32 i_ctime; - u32 i_zone[10]; -}; - -/* - * minix super-block data on disk - */ -struct minix_super_block { - u16 s_ninodes; - u16 s_nzones; - u16 s_imap_blocks; - u16 s_zmap_blocks; - u16 s_firstdatazone; - u16 s_log_zone_size; - u32 s_max_size; - u16 s_magic; - u16 s_state; - u32 s_zones; -}; - -struct minix_dir_entry { - u16 inode; - char name[0]; -}; - -#define BLOCK_SIZE_BITS 10 -#define BLOCK_SIZE (1<> 3] & (1<<(i & 7))) != 0; -} -#define inode_in_use(x) (bit(inode_map,(x))) -#define zone_in_use(x) (bit(zone_map,(x)-FIRSTZONE+1)) - -#define mark_inode(x) (setbit(inode_map,(x))) -#define unmark_inode(x) (clrbit(inode_map,(x))) - -#define mark_zone(x) (setbit(zone_map,(x)-FIRSTZONE+1)) -#define unmark_zone(x) (clrbit(zone_map,(x)-FIRSTZONE+1)) - -/* - * Check to make certain that our new filesystem won't be created on - * an already mounted partition. Code adapted from mke2fs, Copyright - * (C) 1994 Theodore Ts'o. Also licensed under GPL. - */ -static void check_mount(void) -{ - FILE *f; - struct mntent *mnt; - - if ((f = setmntent(MOUNTED, "r")) == NULL) - return; - while ((mnt = getmntent(f)) != NULL) - if (strcmp(device_name, mnt->mnt_fsname) == 0) - break; - endmntent(f); - if (!mnt) - return; - - error_msg_and_die("%s is mounted; will not make a filesystem here!", device_name); -} - -static long valid_offset(int fd, int offset) -{ - char ch; - - if (lseek(fd, offset, 0) < 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; - - if ((fd = open(file, O_RDWR)) < 0) - perror_msg_and_die("%s", file); - 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 super block valid. */ - Super.s_state |= MINIX_VALID_FS; - Super.s_state &= ~MINIX_ERROR_FS; - - if (lseek(DEV, 0, SEEK_SET)) - error_msg_and_die("seek to boot block failed in write_tables"); - if (512 != write(DEV, boot_block_buffer, 512)) - error_msg_and_die("unable to clear boot sector"); - if (BLOCK_SIZE != lseek(DEV, BLOCK_SIZE, SEEK_SET)) - error_msg_and_die("seek failed in write_tables"); - if (BLOCK_SIZE != write(DEV, super_block_buffer, BLOCK_SIZE)) - error_msg_and_die("unable to write super-block"); - if (IMAPS * BLOCK_SIZE != write(DEV, inode_map, IMAPS * BLOCK_SIZE)) - error_msg_and_die("unable to write inode map"); - if (ZMAPS * BLOCK_SIZE != write(DEV, zone_map, ZMAPS * BLOCK_SIZE)) - error_msg_and_die("unable to write zone map"); - if (INODE_BUFFER_SIZE != write(DEV, inode_buffer, INODE_BUFFER_SIZE)) - error_msg_and_die("unable to write inodes"); - -} - -static void write_block(int blk, char *buffer) -{ - if (blk * BLOCK_SIZE != lseek(DEV, blk * BLOCK_SIZE, SEEK_SET)) - error_msg_and_die("seek failed in write_block"); - if (BLOCK_SIZE != write(DEV, buffer, BLOCK_SIZE)) - error_msg_and_die("write failed in write_block"); -} - -static int get_free_block(void) -{ - int blk; - - if (used_good_blocks + 1 >= MAX_GOOD_BLOCKS) - error_msg_and_die("too many bad blocks"); - if (used_good_blocks) - blk = good_blocks_table[used_good_blocks - 1] + 1; - else - blk = FIRSTZONE; - while (blk < ZONES && zone_in_use(blk)) - blk++; - if (blk >= ZONES) - error_msg_and_die("not enough good blocks"); - good_blocks_table[used_good_blocks] = blk; - used_good_blocks++; - return blk; -} - -static void mark_good_blocks(void) -{ - int blk; - - for (blk = 0; blk < used_good_blocks; blk++) - mark_zone(good_blocks_table[blk]); -} - -static int next(int zone) -{ - if (!zone) - zone = FIRSTZONE - 1; - while (++zone < ZONES) - if (zone_in_use(zone)) - return zone; - return 0; -} - -static void make_bad_inode(void) -{ - struct minix_inode *inode = &Inode[MINIX_BAD_INO]; - int i, j, zone; - int ind = 0, dind = 0; - unsigned short ind_block[BLOCK_SIZE >> 1]; - unsigned short dind_block[BLOCK_SIZE >> 1]; - -#define NEXT_BAD (zone = next(zone)) - - if (!badblocks) - return; - mark_inode(MINIX_BAD_INO); - inode->i_nlinks = 1; - inode->i_time = time(NULL); - inode->i_mode = S_IFREG + 0000; - inode->i_size = 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; - } - } - 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); -} - -#ifdef BB_FEATURE_MINIX2 -static void make_bad_inode2(void) -{ - struct minix2_inode *inode = &Inode2[MINIX_BAD_INO]; - int i, j, zone; - int ind = 0, dind = 0; - unsigned long ind_block[BLOCK_SIZE >> 2]; - unsigned long dind_block[BLOCK_SIZE >> 2]; - - if (!badblocks) - return; - mark_inode(MINIX_BAD_INO); - inode->i_nlinks = 1; - inode->i_atime = inode->i_mtime = inode->i_ctime = time(NULL); - inode->i_mode = S_IFREG + 0000; - inode->i_size = 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 */ - 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); -} -#endif - -static void make_root_inode(void) -{ - struct minix_inode *inode = &Inode[MINIX_ROOT_INO]; - - mark_inode(MINIX_ROOT_INO); - inode->i_zone[0] = get_free_block(); - inode->i_nlinks = 2; - inode->i_time = time(NULL); - if (badblocks) - inode->i_size = 3 * dirsize; - else { - root_block[2 * dirsize] = '\0'; - root_block[2 * dirsize + 1] = '\0'; - inode->i_size = 2 * 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], root_block); -} - -#ifdef BB_FEATURE_MINIX2 -static void make_root_inode2(void) -{ - struct minix2_inode *inode = &Inode2[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 = time(NULL); - if (badblocks) - inode->i_size = 3 * dirsize; - else { - root_block[2 * dirsize] = '\0'; - root_block[2 * dirsize + 1] = '\0'; - inode->i_size = 2 * 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], root_block); -} -#endif - -static void setup_tables(void) -{ - int i; - unsigned long inodes; - - memset(super_block_buffer, 0, BLOCK_SIZE); - memset(boot_block_buffer, 0, 512); - MAGIC = magic; - ZONESIZE = 0; - MAXSIZE = version2 ? 0x7fffffff : (7 + 512 + 512 * 512) * 1024; - ZONES = BLOCKS; -/* some magic nrs: 1 inode / 3 blocks */ - if (req_nr_inodes == 0) - inodes = BLOCKS / 3; - else - inodes = req_nr_inodes; - /* Round up inode count to fill block size */ -#ifdef BB_FEATURE_MINIX2 - if (version2) - inodes = ((inodes + MINIX2_INODES_PER_BLOCK - 1) & - ~(MINIX2_INODES_PER_BLOCK - 1)); - else -#endif - inodes = ((inodes + MINIX_INODES_PER_BLOCK - 1) & - ~(MINIX_INODES_PER_BLOCK - 1)); - if (inodes > 65535) - inodes = 65535; - INODES = inodes; - IMAPS = UPPER(INODES + 1, BITS_PER_BLOCK); - ZMAPS = 0; - i = 0; - while (ZMAPS != - UPPER(BLOCKS - (2 + IMAPS + ZMAPS + INODE_BLOCKS) + 1, - BITS_PER_BLOCK) && i < 1000) { - ZMAPS = - UPPER(BLOCKS - (2 + IMAPS + ZMAPS + INODE_BLOCKS) + 1, - BITS_PER_BLOCK); - i++; - } - /* 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 - * /sbin/mkfs.minix -i 200 test.fs - * */ - if (i >= 999) { - error_msg_and_die("unable to allocate buffers for maps"); - } - FIRSTZONE = NORM_FIRSTZONE; - inode_map = xmalloc(IMAPS * BLOCK_SIZE); - zone_map = xmalloc(ZMAPS * BLOCK_SIZE); - memset(inode_map, 0xff, IMAPS * BLOCK_SIZE); - memset(zone_map, 0xff, ZMAPS * BLOCK_SIZE); - for (i = FIRSTZONE; i < ZONES; i++) - unmark_zone(i); - for (i = MINIX_ROOT_INO; i <= INODES; i++) - unmark_inode(i); - inode_buffer = xmalloc(INODE_BUFFER_SIZE); - memset(inode_buffer, 0, INODE_BUFFER_SIZE); - printf("%ld inodes\n", INODES); - printf("%ld blocks\n", ZONES); - printf("Firstdatazone=%ld (%ld)\n", FIRSTZONE, NORM_FIRSTZONE); - printf("Zonesize=%d\n", BLOCK_SIZE << ZONESIZE); - printf("Maxsize=%ld\n\n", MAXSIZE); -} - -/* - * Perform a test of a block; return the number of - * blocks readable/writeable. - */ -static long do_check(char *buffer, int try, unsigned int current_block) -{ - long got; - - /* Seek to the correct loc. */ - if (lseek(DEV, current_block * BLOCK_SIZE, SEEK_SET) != - current_block * BLOCK_SIZE) { - error_msg_and_die("seek failed during testing of blocks"); - } - - - /* Try the read */ - got = read(DEV, buffer, try * BLOCK_SIZE); - if (got < 0) - got = 0; - if (got & (BLOCK_SIZE - 1)) { - printf("Weird values in do_check: probably bugs\n"); - } - got /= BLOCK_SIZE; - return got; -} - -static unsigned int currently_testing = 0; - -static void alarm_intr(int alnum) -{ - 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(void) -{ - int try, got; - static char buffer[BLOCK_SIZE * TEST_BUFFER_BLOCKS]; - - currently_testing = 0; - signal(SIGALRM, alarm_intr); - alarm(5); - while (currently_testing < ZONES) { - if (lseek(DEV, currently_testing * BLOCK_SIZE, SEEK_SET) != - currently_testing * BLOCK_SIZE) - error_msg_and_die("seek failed in check_blocks"); - try = TEST_BUFFER_BLOCKS; - if (currently_testing + try > ZONES) - try = ZONES - currently_testing; - got = do_check(buffer, try, currently_testing); - currently_testing += got; - if (got == try) - continue; - if (currently_testing < FIRSTZONE) - error_msg_and_die("bad blocks before data-area: cannot make fs"); - mark_zone(currently_testing); - badblocks++; - currently_testing++; - } - if (badblocks > 1) - printf("%d bad blocks\n", badblocks); - else if (badblocks == 1) - printf("one bad block\n"); -} - -static void get_list_blocks(filename) -char *filename; - -{ - FILE *listfile; - unsigned long blockno; - - listfile = xfopen(filename, "r"); - while (!feof(listfile)) { - fscanf(listfile, "%ld\n", &blockno); - mark_zone(blockno); - badblocks++; - } - if (badblocks > 1) - printf("%d bad blocks\n", badblocks); - else if (badblocks == 1) - printf("one bad block\n"); -} - -extern int mkfs_minix_main(int argc, char **argv) -{ - int i=1; - char *tmp; - struct stat statbuf; - char *listfile = NULL; - int stopIt=FALSE; - - if (INODE_SIZE * MINIX_INODES_PER_BLOCK != BLOCK_SIZE) - error_msg_and_die("bad inode size"); -#ifdef BB_FEATURE_MINIX2 - if (INODE_SIZE2 * MINIX2_INODES_PER_BLOCK != BLOCK_SIZE) - error_msg_and_die("bad inode size"); -#endif - - /* Parse options */ - argv++; - while (--argc >= 0 && *argv && **argv) { - if (**argv == '-') { - stopIt=FALSE; - while (i > 0 && *++(*argv) && stopIt==FALSE) { - switch (**argv) { - case 'c': - check = 1; - break; - case 'i': - { - char *cp=NULL; - if (*(*argv+1) != 0) { - cp = ++(*argv); - } else { - if (--argc == 0) { - goto goodbye; - } - cp = *(++argv); - } - req_nr_inodes = strtoul(cp, &tmp, 0); - if (*tmp) - show_usage(); - stopIt=TRUE; - break; - } - case 'l': - if (--argc == 0) { - goto goodbye; - } - listfile = *(++argv); - break; - case 'n': - { - char *cp=NULL; - - if (*(*argv+1) != 0) { - cp = ++(*argv); - } else { - if (--argc == 0) { - goto goodbye; - } - cp = *(++argv); - } - i = strtoul(cp, &tmp, 0); - if (*tmp) - show_usage(); - if (i == 14) - magic = MINIX_SUPER_MAGIC; - else if (i == 30) - magic = MINIX_SUPER_MAGIC2; - else - show_usage(); - namelen = i; - dirsize = i + 2; - stopIt=TRUE; - break; - } - case 'v': -#ifdef BB_FEATURE_MINIX2 - version2 = 1; -#else - error_msg("%s: not compiled with minix v2 support", - device_name); - exit(-1); -#endif - break; - case '-': - case 'h': - default: -goodbye: - show_usage(); - } - } - } else { - if (device_name == NULL) - device_name = *argv; - else if (BLOCKS == 0) - BLOCKS = strtol(*argv, &tmp, 0); - else { - goto goodbye; - } - } - argv++; - } - - if (device_name && !BLOCKS) - BLOCKS = get_size(device_name) / 1024; - if (!device_name || BLOCKS < 10) { - show_usage(); - } -#ifdef BB_FEATURE_MINIX2 - if (version2) { - if (namelen == 14) - magic = MINIX2_SUPER_MAGIC; - else - magic = MINIX2_SUPER_MAGIC2; - } else -#endif - if (BLOCKS > 65535) - BLOCKS = 65535; - check_mount(); /* is it already mounted? */ - tmp = root_block; - *(short *) tmp = 1; - strcpy(tmp + 2, "."); - tmp += dirsize; - *(short *) tmp = 1; - strcpy(tmp + 2, ".."); - tmp += dirsize; - *(short *) tmp = 2; - strcpy(tmp + 2, ".badblocks"); - DEV = open(device_name, O_RDWR); - if (DEV < 0) - error_msg_and_die("unable to open %s", device_name); - if (fstat(DEV, &statbuf) < 0) - error_msg_and_die("unable to stat %s", device_name); - if (!S_ISBLK(statbuf.st_mode)) - check = 0; - else if (statbuf.st_rdev == 0x0300 || statbuf.st_rdev == 0x0340) - error_msg_and_die("will not try to make filesystem on '%s'", device_name); - setup_tables(); - if (check) - check_blocks(); - else if (listfile) - get_list_blocks(listfile); -#ifdef BB_FEATURE_MINIX2 - if (version2) { - make_root_inode2(); - make_bad_inode2(); - } else -#endif - { - make_root_inode(); - make_bad_inode(); - } - mark_good_blocks(); - write_tables(); - return( 0); - -} -- cgit v1.2.3-54-g00ecf