mirror of
https://github.com/sheumann/hush.git
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cut 0.5k off mkfs.minix
assorted strtoul fixes (that's what brought me into minix)...
This commit is contained in:
parent
a35c9e91ba
commit
c6ce8733dd
@ -7,12 +7,9 @@
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* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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*/
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#include <stdio.h>
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#include <string.h>
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#include "libbb.h"
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#include <mntent.h>
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/*
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* Given a block device, find the mount table entry if that block device
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* is mounted.
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@ -36,14 +33,16 @@ struct mntent *find_mount_point(const char *name, const char *table)
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mountDevice = s.st_dev;
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if ((mountTable = setmntent(table ? table : bb_path_mtab_file, "r")) == 0)
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mountTable = setmntent(table ? table : bb_path_mtab_file, "r");
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if (!mountTable)
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return 0;
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while ((mountEntry = getmntent(mountTable)) != 0) {
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if(strcmp(name, mountEntry->mnt_dir) == 0
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|| strcmp(name, mountEntry->mnt_fsname) == 0) /* String match. */
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if (strcmp(name, mountEntry->mnt_dir) == 0
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|| strcmp(name, mountEntry->mnt_fsname) == 0
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) { /* String match. */
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break;
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}
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if (stat(mountEntry->mnt_fsname, &s) == 0 && s.st_rdev == mountDevice) /* Match the device. */
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break;
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if (stat(mountEntry->mnt_dir, &s) == 0 && s.st_dev == mountDevice) /* Match the directory's mount point. */
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@ -147,8 +147,11 @@ void xwrite(int fd, const void *buf, size_t count)
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off_t xlseek(int fd, off_t offset, int whence)
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{
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off_t off = lseek(fd, offset, whence);
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if (off == (off_t)-1)
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if (off == (off_t)-1) {
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if (whence == SEEK_SET)
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bb_perror_msg_and_die("lseek(%"OFF_FMT"u)", offset);
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bb_perror_msg_and_die("lseek");
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}
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return off;
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}
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@ -330,13 +330,16 @@ read_maybe_empty(const char *mesg)
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static int
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read_hex(const struct systypes *sys)
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{
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unsigned long v;
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while (1) {
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read_nonempty(_("Hex code (type L to list codes): "));
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if (*line_ptr == 'l' || *line_ptr == 'L')
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if (*line_ptr == 'l' || *line_ptr == 'L') {
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list_types(sys);
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else if (isxdigit(*line_ptr)) {
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return strtoul(line_ptr, NULL, 16);
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continue;
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}
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v = bb_strtoul(line_ptr, NULL, 16);
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if (errno || v > 0xff) continue;
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return v;
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}
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}
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#endif /* CONFIG_FEATURE_FDISK_WRITABLE */
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@ -39,19 +39,16 @@ typedef enum type_id {
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static int remove_ids(type_id type, int argc, char **argv)
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{
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int id;
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unsigned long id;
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int ret = 0; /* silence gcc */
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char *end;
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int nb_errors = 0;
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union semun arg;
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arg.val = 0;
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while (argc) {
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id = strtoul(argv[0], &end, 10);
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if (*end != 0) {
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id = bb_strtoul(argv[0], NULL, 10);
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if (errno || id > INT_MAX) {
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bb_error_msg("invalid id: %s", argv[0]);
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nb_errors++;
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} else {
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@ -91,11 +88,13 @@ int ipcrm_main(int argc, char **argv)
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type_id what = 0; /* silence gcc */
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char w;
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if ((((w=argv[1][0]) == 'm' && argv[1][1] == 's' && argv[1][2] == 'g')
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|| (argv[1][0] == 's'
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&& ((w=argv[1][1]) == 'h' || w == 'e')
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&& argv[1][2] == 'm'))
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&& argv[1][3] == '\0') {
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w=argv[1][0];
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if ( ((w == 'm' && argv[1][1] == 's' && argv[1][2] == 'g')
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|| (argv[1][0] == 's'
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&& ((w=argv[1][1]) == 'h' || w == 'e')
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&& argv[1][2] == 'm')
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) && argv[1][3] == '\0'
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) {
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if (argc < 3)
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bb_show_usage();
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@ -140,7 +139,7 @@ int ipcrm_main(int argc, char **argv)
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if (iskey) {
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/* keys are in hex or decimal */
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key_t key = strtoul(optarg, NULL, 0);
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key_t key = xstrtoul(optarg, 0);
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if (key == IPC_PRIVATE) {
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error++;
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@ -176,7 +175,7 @@ int ipcrm_main(int argc, char **argv)
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}
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} else {
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/* ids are in decimal */
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id = strtoul(optarg, NULL, 10);
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id = xatoul(optarg);
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}
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result = ((c == 'q') ? msgctl(id, IPC_RMID, NULL) :
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@ -166,13 +166,15 @@ struct minix_dir_entry {
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#define UPPER(size,n) (((size)+((n)-1))/(n))
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#define INODE_SIZE (sizeof(struct minix_inode))
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#ifdef CONFIG_FEATURE_MINIX2
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#define INODE_SIZE2 (sizeof(struct minix2_inode))
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#define INODE_BLOCKS UPPER(INODES, (version2 ? MINIX2_INODES_PER_BLOCK \
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#if ENABLE_FEATURE_MINIX2
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# define INODE_SIZE2 (sizeof(struct minix2_inode))
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# define INODE_BLOCKS UPPER(INODES, (version2 ? MINIX2_INODES_PER_BLOCK \
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: MINIX_INODES_PER_BLOCK))
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#else
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#define INODE_BLOCKS UPPER(INODES, (MINIX_INODES_PER_BLOCK))
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# define INODE_BLOCKS UPPER(INODES, (MINIX_INODES_PER_BLOCK))
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#endif
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#define INODE_BUFFER_SIZE (INODE_BLOCKS * BLOCK_SIZE)
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#define BITS_PER_BLOCK (BLOCK_SIZE<<3)
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@ -180,33 +182,37 @@ struct minix_dir_entry {
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static char *device_name;
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static int DEV = -1;
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static uint32_t BLOCKS;
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static int check;
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static int badblocks;
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static int namelen = 30; /* default (changed to 30, per Linus's
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suggestion, Sun Nov 21 08:05:07 1993) */
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/* default (changed to 30, per Linus's suggestion, Sun Nov 21 08:05:07 1993) */
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static int namelen = 30;
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static int dirsize = 32;
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static int magic = MINIX_SUPER_MAGIC2;
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#if ENABLE_FEATURE_MINIX2
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static int version2;
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#else
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enum { version2 = 0 };
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#endif
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static char root_block[BLOCK_SIZE];
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static char *inode_buffer;
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#define Inode (((struct minix_inode *) inode_buffer)-1)
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#ifdef CONFIG_FEATURE_MINIX2
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#if ENABLE_FEATURE_MINIX2
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#define Inode2 (((struct minix2_inode *) inode_buffer)-1)
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#endif
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static char super_block_buffer[BLOCK_SIZE];
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static char boot_block_buffer[512];
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#define Super (*(struct minix_super_block *)super_block_buffer)
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#define INODES (Super.s_ninodes)
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#ifdef CONFIG_FEATURE_MINIX2
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#define ZONES (version2 ? Super.s_zones : Super.s_nzones)
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#if ENABLE_FEATURE_MINIX2
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# define ZONES (version2 ? Super.s_zones : Super.s_nzones)
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#else
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#define ZONES (Super.s_nzones)
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# define ZONES (Super.s_nzones)
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#endif
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#define IMAPS (Super.s_imap_blocks)
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#define ZMAPS (Super.s_zmap_blocks)
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#define FIRSTZONE (Super.s_firstdatazone)
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@ -222,7 +228,7 @@ static unsigned short good_blocks_table[MAX_GOOD_BLOCKS];
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static int used_good_blocks;
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static unsigned long req_nr_inodes;
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static int bit(char * a,unsigned int i)
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static int bit(char* a, unsigned i)
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{
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return (a[i >> 3] & (1<<(i & 7))) != 0;
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}
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@ -235,33 +241,11 @@ static int bit(char * a,unsigned int i)
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#define mark_zone(x) (setbit(zone_map,(x)-FIRSTZONE+1))
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#define unmark_zone(x) (clrbit(zone_map,(x)-FIRSTZONE+1))
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/*
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* Check to make certain that our new filesystem won't be created on
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* an already mounted partition. Code adapted from mke2fs, Copyright
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* (C) 1994 Theodore Ts'o. Also licensed under GPL.
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*/
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static void check_mount(void)
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{
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FILE *f;
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struct mntent *mnt;
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if ((f = setmntent(MOUNTED, "r")) == NULL)
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return;
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while ((mnt = getmntent(f)) != NULL)
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if (strcmp(device_name, mnt->mnt_fsname) == 0)
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break;
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endmntent(f);
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if (!mnt)
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return;
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bb_error_msg_and_die("%s is mounted; will not make a filesystem here!", device_name);
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}
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static long valid_offset(int fd, int offset)
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{
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char ch;
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if (lseek(fd, offset, 0) < 0)
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if (lseek(fd, offset, SEEK_SET) < 0)
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return 0;
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if (read(fd, &ch, 1) < 1)
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return 0;
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@ -275,6 +259,7 @@ static int count_blocks(int fd)
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low = 0;
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for (high = 1; valid_offset(fd, high); high *= 2)
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low = high;
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while (low < high - 1) {
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const int mid = (low + high) / 2;
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@ -309,29 +294,34 @@ static void write_tables(void)
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Super.s_state |= MINIX_VALID_FS;
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Super.s_state &= ~MINIX_ERROR_FS;
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if (lseek(DEV, 0, SEEK_SET))
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bb_error_msg_and_die("seek to boot block failed in write_tables");
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if (512 != write(DEV, boot_block_buffer, 512))
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bb_error_msg_and_die("cannot clear boot sector");
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if (BLOCK_SIZE != lseek(DEV, BLOCK_SIZE, SEEK_SET))
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bb_error_msg_and_die("seek failed in write_tables");
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if (BLOCK_SIZE != write(DEV, super_block_buffer, BLOCK_SIZE))
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bb_error_msg_and_die("cannot write super-block");
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if (IMAPS * BLOCK_SIZE != write(DEV, inode_map, IMAPS * BLOCK_SIZE))
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bb_error_msg_and_die("cannot write inode map");
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if (ZMAPS * BLOCK_SIZE != write(DEV, zone_map, ZMAPS * BLOCK_SIZE))
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bb_error_msg_and_die("cannot write zone map");
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if (INODE_BUFFER_SIZE != write(DEV, inode_buffer, INODE_BUFFER_SIZE))
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bb_error_msg_and_die("cannot write inodes");
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msg_eol = "seek to 0 failed";
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xlseek(DEV, 0, SEEK_SET);
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msg_eol = "cannot clear boot sector";
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xwrite(DEV, boot_block_buffer, 512);
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msg_eol = "seek to BLOCK_SIZE failed";
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xlseek(DEV, BLOCK_SIZE, SEEK_SET);
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msg_eol = "cannot write superblock";
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xwrite(DEV, super_block_buffer, BLOCK_SIZE);
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msg_eol = "cannot write inode map";
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xwrite(DEV, inode_map, IMAPS * BLOCK_SIZE);
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msg_eol = "cannot write zone map";
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xwrite(DEV, zone_map, ZMAPS * BLOCK_SIZE);
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msg_eol = "cannot write inodes";
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xwrite(DEV, inode_buffer, INODE_BUFFER_SIZE);
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msg_eol = "\n";
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}
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static void write_block(int blk, char *buffer)
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{
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if (blk * BLOCK_SIZE != lseek(DEV, blk * BLOCK_SIZE, SEEK_SET))
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bb_error_msg_and_die("seek failed in write_block");
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if (BLOCK_SIZE != write(DEV, buffer, BLOCK_SIZE))
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bb_error_msg_and_die("write failed in write_block");
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xlseek(DEV, blk * BLOCK_SIZE, SEEK_SET);
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xwrite(DEV, buffer, BLOCK_SIZE);
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}
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static int get_free_block(void)
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@ -385,6 +375,8 @@ static void make_bad_inode(void)
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return;
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mark_inode(MINIX_BAD_INO);
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inode->i_nlinks = 1;
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/* BTW, setting this makes all images different */
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/* it's harder to check for bugs then - diff isn't helpful :(... */
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inode->i_time = time(NULL);
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inode->i_mode = S_IFREG + 0000;
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inode->i_size = badblocks * BLOCK_SIZE;
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@ -421,7 +413,7 @@ static void make_bad_inode(void)
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write_block(dind, (char *) dind_block);
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}
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#ifdef CONFIG_FEATURE_MINIX2
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#if ENABLE_FEATURE_MINIX2
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static void make_bad_inode2(void)
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{
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struct minix2_inode *inode = &Inode2[MINIX_BAD_INO];
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@ -494,7 +486,7 @@ static void make_root_inode(void)
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write_block(inode->i_zone[0], root_block);
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}
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#ifdef CONFIG_FEATURE_MINIX2
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#if ENABLE_FEATURE_MINIX2
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static void make_root_inode2(void)
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{
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struct minix2_inode *inode = &Inode2[MINIX_ROOT_INO];
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@ -528,11 +520,9 @@ static void setup_tables(void)
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MAGIC = magic;
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ZONESIZE = 0;
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MAXSIZE = version2 ? 0x7fffffff : (7 + 512 + 512 * 512) * 1024;
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#ifdef CONFIG_FEATURE_MINIX2
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if (version2) {
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Super.s_zones = BLOCKS;
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} else
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#endif
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Super.s_nzones = BLOCKS;
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/* some magic nrs: 1 inode / 3 blocks */
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@ -541,12 +531,10 @@ static void setup_tables(void)
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else
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inodes = req_nr_inodes;
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/* Round up inode count to fill block size */
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#ifdef CONFIG_FEATURE_MINIX2
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if (version2)
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inodes = ((inodes + MINIX2_INODES_PER_BLOCK - 1) &
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~(MINIX2_INODES_PER_BLOCK - 1));
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else
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#endif
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inodes = ((inodes + MINIX_INODES_PER_BLOCK - 1) &
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~(MINIX_INODES_PER_BLOCK - 1));
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if (inodes > 65535)
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@ -594,16 +582,14 @@ static void setup_tables(void)
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* Perform a test of a block; return the number of
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* blocks readable/writable.
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*/
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static long do_check(char *buffer, int try, unsigned int current_block)
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static long do_check(char *buffer, int try, unsigned current_block)
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{
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long got;
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/* Seek to the correct loc. */
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if (lseek(DEV, current_block * BLOCK_SIZE, SEEK_SET) !=
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current_block * BLOCK_SIZE) {
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bb_error_msg_and_die("seek failed during testing of blocks");
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}
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msg_eol = "seek failed during testing of blocks";
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xlseek(DEV, current_block * BLOCK_SIZE, SEEK_SET);
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msg_eol = "\n";
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/* Try the read */
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got = read(DEV, buffer, try * BLOCK_SIZE);
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@ -616,7 +602,7 @@ static long do_check(char *buffer, int try, unsigned int current_block)
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return got;
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}
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static unsigned int currently_testing;
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static unsigned currently_testing;
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static void alarm_intr(int alnum)
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{
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@ -639,9 +625,9 @@ static void check_blocks(void)
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signal(SIGALRM, alarm_intr);
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alarm(5);
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while (currently_testing < ZONES) {
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if (lseek(DEV, currently_testing * BLOCK_SIZE, SEEK_SET) !=
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currently_testing * BLOCK_SIZE)
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bb_error_msg_and_die("seek failed in check_blocks");
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msg_eol = "seek failed in check_blocks";
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xlseek(DEV, currently_testing * BLOCK_SIZE, SEEK_SET);
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msg_eol = "\n";
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try = TEST_BUFFER_BLOCKS;
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if (currently_testing + try > ZONES)
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try = ZONES - currently_testing;
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@ -655,10 +641,7 @@ static void check_blocks(void)
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badblocks++;
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currently_testing++;
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}
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if (badblocks > 1)
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printf("%d bad blocks\n", badblocks);
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else if (badblocks == 1)
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printf("one bad block\n");
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printf("%d bad block(s)\n", badblocks);
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}
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static void get_list_blocks(char *filename)
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@ -672,130 +655,66 @@ static void get_list_blocks(char *filename)
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mark_zone(blockno);
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badblocks++;
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}
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if (badblocks > 1)
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printf("%d bad blocks\n", badblocks);
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else if (badblocks == 1)
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printf("one bad block\n");
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printf("%d bad block(s)\n", badblocks);
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}
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int mkfs_minix_main(int argc, char **argv)
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{
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int i=1;
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unsigned opt;
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char *tmp;
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struct stat statbuf;
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char *str_i, *str_n;
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char *listfile = NULL;
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int stopIt=FALSE;
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if (INODE_SIZE * MINIX_INODES_PER_BLOCK != BLOCK_SIZE)
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bb_error_msg_and_die("bad inode size");
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#ifdef CONFIG_FEATURE_MINIX2
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#if ENABLE_FEATURE_MINIX2
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if (INODE_SIZE2 * MINIX2_INODES_PER_BLOCK != BLOCK_SIZE)
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bb_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)
|
||||
bb_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)
|
||||
bb_show_usage();
|
||||
if (i == 14)
|
||||
magic = MINIX_SUPER_MAGIC;
|
||||
else if (i == 30)
|
||||
magic = MINIX_SUPER_MAGIC2;
|
||||
else
|
||||
bb_show_usage();
|
||||
namelen = i;
|
||||
dirsize = i + 2;
|
||||
stopIt=TRUE;
|
||||
break;
|
||||
}
|
||||
case 'v':
|
||||
#ifdef CONFIG_FEATURE_MINIX2
|
||||
version2 = 1;
|
||||
opt = getopt32(argc, argv, "ci:l:n:v", &str_i, &listfile, &str_n);
|
||||
argv += optind;
|
||||
//if (opt & 1) -c
|
||||
if (opt & 2) req_nr_inodes = xatoul(str_i); // -i
|
||||
//if (opt & 4) -l
|
||||
if (opt & 8) { // -n
|
||||
namelen = xatoi_u(str_n);
|
||||
if (namelen == 14) magic = MINIX_SUPER_MAGIC;
|
||||
else if (namelen == 30) magic = MINIX_SUPER_MAGIC2;
|
||||
else bb_show_usage();
|
||||
dirsize = namelen + 2;
|
||||
}
|
||||
if (opt & 0x10) { // -v
|
||||
#if ENABLE_FEATURE_MINIX2
|
||||
version2 = 1;
|
||||
#else
|
||||
bb_error_msg("%s: not compiled with minix v2 support",
|
||||
device_name);
|
||||
exit(-1);
|
||||
bb_error_msg_and_die("%s: not compiled with minix v2 support",
|
||||
device_name);
|
||||
#endif
|
||||
break;
|
||||
case '-':
|
||||
case 'h':
|
||||
default:
|
||||
goodbye:
|
||||
bb_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) {
|
||||
device_name = *argv++;
|
||||
if (!device_name)
|
||||
bb_show_usage();
|
||||
}
|
||||
#ifdef CONFIG_FEATURE_MINIX2
|
||||
if (*argv) {
|
||||
BLOCKS = xatou32(*argv);
|
||||
if (BLOCKS < 10)
|
||||
bb_show_usage();
|
||||
} else
|
||||
BLOCKS = get_size(device_name) / 1024;
|
||||
|
||||
if (version2) {
|
||||
magic = MINIX2_SUPER_MAGIC2;
|
||||
if (namelen == 14)
|
||||
magic = MINIX2_SUPER_MAGIC;
|
||||
else
|
||||
magic = MINIX2_SUPER_MAGIC2;
|
||||
} else
|
||||
#endif
|
||||
if (BLOCKS > 65535)
|
||||
} else if (BLOCKS > 65535)
|
||||
BLOCKS = 65535;
|
||||
check_mount(); /* is it already mounted? */
|
||||
|
||||
if (find_mount_point(device_name, NULL))
|
||||
bb_error_msg_and_die("%s is mounted; refusing to make "
|
||||
"a filesystem", device_name);
|
||||
|
||||
tmp = root_block;
|
||||
*(short *) tmp = 1;
|
||||
strcpy(tmp + 2, ".");
|
||||
@ -805,30 +724,31 @@ goodbye:
|
||||
tmp += dirsize;
|
||||
*(short *) tmp = 2;
|
||||
strcpy(tmp + 2, ".badblocks");
|
||||
|
||||
DEV = xopen(device_name, O_RDWR);
|
||||
if (fstat(DEV, &statbuf) < 0)
|
||||
bb_error_msg_and_die("cannot stat %s", device_name);
|
||||
if (!S_ISBLK(statbuf.st_mode))
|
||||
check = 0;
|
||||
opt &= ~1; // clear -c (check)
|
||||
else if (statbuf.st_rdev == 0x0300 || statbuf.st_rdev == 0x0340)
|
||||
bb_error_msg_and_die("will not try to make filesystem on '%s'", device_name);
|
||||
|
||||
setup_tables();
|
||||
if (check)
|
||||
|
||||
if (opt & 1) // -c ?
|
||||
check_blocks();
|
||||
else if (listfile)
|
||||
get_list_blocks(listfile);
|
||||
#ifdef CONFIG_FEATURE_MINIX2
|
||||
|
||||
if (version2) {
|
||||
make_root_inode2();
|
||||
make_bad_inode2();
|
||||
} else
|
||||
#endif
|
||||
{
|
||||
} else {
|
||||
make_root_inode();
|
||||
make_bad_inode();
|
||||
}
|
||||
|
||||
mark_good_blocks();
|
||||
write_tables();
|
||||
return 0;
|
||||
|
||||
}
|
||||
|
Loading…
Reference in New Issue
Block a user