*
* 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 "internal.h"
+#include "busybox.h"
#include <stdio.h>
#include <time.h>
#include <unistd.h>
#include <ctype.h>
#include <stdlib.h>
#include <termios.h>
-#include <sys/stat.h>
#include <sys/ioctl.h>
+#include <sys/param.h>
#include <mntent.h>
-#include <getopt.h>
-#include <linux/fs.h>
-#include <linux/minix_fs.h>
-#ifdef MINIX2_SUPER_MAGIC2
-#define HAVE_MINIX2 1
-#endif
+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];
+};
-#ifndef __GNUC__
-#error "needs gcc for the bitop-__asm__'s"
+/*
+ * 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<<BLOCK_SIZE_BITS)
+
+#define NAME_MAX 255 /* # chars in a file name */
+
+#define MINIX_INODES_PER_BLOCK ((BLOCK_SIZE)/(sizeof (struct minix_inode)))
+
+#define MINIX_VALID_FS 0x0001 /* Clean fs. */
+#define MINIX_ERROR_FS 0x0002 /* fs has errors. */
+
+#define MINIX_SUPER_MAGIC 0x137F /* original minix fs */
+#define MINIX_SUPER_MAGIC2 0x138F /* minix fs, 30 char names */
+
+#ifndef BLKGETSIZE
+#define BLKGETSIZE _IO(0x12,96) /* return device size */
#endif
+
#ifndef __linux__
#define volatile
#endif
#define UPPER(size,n) (((size)+((n)-1))/(n))
#define INODE_SIZE (sizeof(struct minix_inode))
-#ifdef HAVE_MINIX2
+#ifdef BB_FEATURE_MINIX2
#define INODE_SIZE2 (sizeof(struct minix2_inode))
#define INODE_BLOCKS UPPER(INODES, (version2 ? MINIX2_INODES_PER_BLOCK \
: MINIX_INODES_PER_BLOCK))
#define BITS_PER_BLOCK (BLOCK_SIZE<<3)
-static char *program_name = "mkfs";
static char *device_name = NULL;
static int DEV = -1;
static long BLOCKS = 0;
static char *inode_buffer = NULL;
#define Inode (((struct minix_inode *) inode_buffer)-1)
-#ifdef HAVE_MINIX2
+#ifdef BB_FEATURE_MINIX2
#define Inode2 (((struct minix2_inode *) inode_buffer)-1)
#endif
static char super_block_buffer[BLOCK_SIZE];
#define Super (*(struct minix_super_block *)super_block_buffer)
#define INODES ((unsigned long)Super.s_ninodes)
-#ifdef HAVE_MINIX2
+#ifdef BB_FEATURE_MINIX2
#define ZONES ((unsigned long)(version2 ? Super.s_zones : Super.s_nzones))
#else
#define ZONES ((unsigned long)(Super.s_nzones))
static int used_good_blocks = 0;
static unsigned long req_nr_inodes = 0;
+static inline int bit(char * a,unsigned int i)
+{
+ return (a[i >> 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_zone(x) (setbit(zone_map,(x)-FIRSTZONE+1))
#define unmark_zone(x) (clrbit(zone_map,(x)-FIRSTZONE+1))
-/*
- * Volatile to let gcc know that this doesn't return. When trying
- * to compile this under minix, volatile gives a warning, as
- * exit() isn't defined as volatile under minix.
- */
-static volatile void die(char *str)
-{
- fprintf(stderr, "%s: %s\n", program_name, str);
- exit(8);
-}
-
-static volatile void show_usage()
-{
- fprintf(stderr, "BusyBox v%s (%s) multi-call binary -- GPL2\n\n",
- BB_VER, BB_BT);
- fprintf(stderr,
- "Usage: %s [-c | -l filename] [-nXX] [-iXX] /dev/name [blocks]\n\n",
- program_name);
- fprintf(stderr, "Make a MINIX filesystem.\n\n");
- fprintf(stderr, "OPTIONS:\n");
- fprintf(stderr, "\t-c\t\tCheck the device for bad blocks\n");
- fprintf(stderr,
- "\t-n [14|30]\tSpecify the maximum length of filenames\n");
- fprintf(stderr,
- "\t-i\t\tSpecify the number of inodes for the filesystem\n");
- fprintf(stderr,
- "\t-l FILENAME\tRead the bad blocks list from FILENAME\n");
- fprintf(stderr, "\t-v\t\tMake a Minix version 2 filesystem\n\n");
- exit(16);
-}
-
/*
* Check to make certain that our new filesystem won't be created on
* an already mounted partition. Code adapted from mke2fs, Copyright
if (!mnt)
return;
- die("%s is mounted; will not make a filesystem here!");
+ error_msg_and_die("%s is mounted; will not make a filesystem here!", device_name);
}
static long valid_offset(int fd, int offset)
int fd;
long size;
- fd = open(file, O_RDWR);
- if (fd < 0) {
- perror(file);
- exit(1);
- }
+ if ((fd = open(file, O_RDWR)) < 0)
+ perror_msg_and_die("%s", file);
if (ioctl(fd, BLKGETSIZE, &size) >= 0) {
close(fd);
return (size * 512);
Super.s_state &= ~MINIX_ERROR_FS;
if (lseek(DEV, 0, SEEK_SET))
- die("seek to boot block failed in write_tables");
+ error_msg_and_die("seek to boot block failed in write_tables");
if (512 != write(DEV, boot_block_buffer, 512))
- die("unable to clear boot sector");
+ error_msg_and_die("unable to clear boot sector");
if (BLOCK_SIZE != lseek(DEV, BLOCK_SIZE, SEEK_SET))
- die("seek failed in write_tables");
+ error_msg_and_die("seek failed in write_tables");
if (BLOCK_SIZE != write(DEV, super_block_buffer, BLOCK_SIZE))
- die("unable to write super-block");
+ error_msg_and_die("unable to write super-block");
if (IMAPS * BLOCK_SIZE != write(DEV, inode_map, IMAPS * BLOCK_SIZE))
- die("unable to write inode map");
+ error_msg_and_die("unable to write inode map");
if (ZMAPS * BLOCK_SIZE != write(DEV, zone_map, ZMAPS * BLOCK_SIZE))
- die("unable to write zone map");
+ error_msg_and_die("unable to write zone map");
if (INODE_BUFFER_SIZE != write(DEV, inode_buffer, INODE_BUFFER_SIZE))
- die("unable to write inodes");
+ 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))
- die("seek failed in write_block");
+ error_msg_and_die("seek failed in write_block");
if (BLOCK_SIZE != write(DEV, buffer, BLOCK_SIZE))
- die("write failed in write_block");
+ 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)
- die("too many bad blocks");
+ error_msg_and_die("too many bad blocks");
if (used_good_blocks)
blk = good_blocks_table[used_good_blocks - 1] + 1;
else
while (blk < ZONES && zone_in_use(blk))
blk++;
if (blk >= ZONES)
- die("not enough good blocks");
+ error_msg_and_die("not enough good blocks");
good_blocks_table[used_good_blocks] = blk;
used_good_blocks++;
return blk;
goto end_bad;
}
}
- die("too many bad blocks");
+ error_msg_and_die("too many bad blocks");
end_bad:
if (ind)
write_block(ind, (char *) ind_block);
write_block(dind, (char *) dind_block);
}
-#ifdef HAVE_MINIX2
+#ifdef BB_FEATURE_MINIX2
static void make_bad_inode2(void)
{
struct minix2_inode *inode = &Inode2[MINIX_BAD_INO];
}
}
/* Could make triple indirect block here */
- die("too many bad blocks");
+ error_msg_and_die("too many bad blocks");
end_bad:
if (ind)
write_block(ind, (char *) ind_block);
write_block(inode->i_zone[0], root_block);
}
-#ifdef HAVE_MINIX2
+#ifdef BB_FEATURE_MINIX2
static void make_root_inode2(void)
{
struct minix2_inode *inode = &Inode2[MINIX_ROOT_INO];
else
inodes = req_nr_inodes;
/* Round up inode count to fill block size */
-#ifdef HAVE_MINIX2
+#ifdef BB_FEATURE_MINIX2
if (version2)
inodes = ((inodes + MINIX2_INODES_PER_BLOCK - 1) &
~(MINIX2_INODES_PER_BLOCK - 1));
* /sbin/mkfs.minix -i 200 test.fs
* */
if (i >= 999) {
- die("unable to allocate buffers for maps");
+ error_msg_and_die("unable to allocate buffers for maps");
}
FIRSTZONE = NORM_FIRSTZONE;
inode_map = xmalloc(IMAPS * BLOCK_SIZE);
/* Seek to the correct loc. */
if (lseek(DEV, current_block * BLOCK_SIZE, SEEK_SET) !=
current_block * BLOCK_SIZE) {
- die("seek failed during testing of blocks");
+ error_msg_and_die("seek failed during testing of blocks");
}
while (currently_testing < ZONES) {
if (lseek(DEV, currently_testing * BLOCK_SIZE, SEEK_SET) !=
currently_testing * BLOCK_SIZE)
- die("seek failed in check_blocks");
+ error_msg_and_die("seek failed in check_blocks");
try = TEST_BUFFER_BLOCKS;
if (currently_testing + try > ZONES)
try = ZONES - currently_testing;
if (got == try)
continue;
if (currently_testing < FIRSTZONE)
- die("bad blocks before data-area: cannot make fs");
+ error_msg_and_die("bad blocks before data-area: cannot make fs");
mark_zone(currently_testing);
badblocks++;
currently_testing++;
listfile = fopen(filename, "r");
if (listfile == (FILE *) NULL) {
- die("can't open file of bad blocks");
+ error_msg_and_die("can't open file of bad blocks");
}
while (!feof(listfile)) {
fscanf(listfile, "%ld\n", &blockno);
extern int mkfs_minix_main(int argc, char **argv)
{
- int i;
+ int i=1;
char *tmp;
struct stat statbuf;
char *listfile = NULL;
+ int stopIt=FALSE;
- if (argc && *argv)
- program_name = *argv;
if (INODE_SIZE * MINIX_INODES_PER_BLOCK != BLOCK_SIZE)
- die("bad inode size");
-#ifdef HAVE_MINIX2
+ error_msg_and_die("bad inode size");
+#ifdef BB_FEATURE_MINIX2
if (INODE_SIZE2 * MINIX2_INODES_PER_BLOCK != BLOCK_SIZE)
- die("bad inode size");
+ error_msg_and_die("bad inode size");
#endif
- opterr = 0;
- while ((i = getopt(argc, argv, "ci:l:n:v")) != EOF)
- switch (i) {
- case 'c':
- check = 1;
- break;
- case 'i':
- req_nr_inodes = (unsigned long) atol(optarg);
- break;
- case 'l':
- listfile = optarg;
- break;
- case 'n':
- i = strtoul(optarg, &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;
- break;
- case 'v':
-#ifdef HAVE_MINIX2
- version2 = 1;
+
+ /* 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
- fprintf(stderr, "%s: not compiled with minix v2 support\n",
- program_name, device_name);
- exit(-1);
+ error_msg("%s: not compiled with minix v2 support",
+ device_name);
+ exit(-1);
#endif
- break;
- default:
- show_usage();
+ 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;
+ }
}
- argc -= optind;
- argv += optind;
- if (argc > 0 && !device_name) {
- device_name = argv[0];
- argc--;
argv++;
}
- if (argc > 0) {
- BLOCKS = strtol(argv[0], &tmp, 0);
- if (*tmp) {
- printf("strtol error: number of blocks not specified");
- show_usage();
- }
- }
if (device_name && !BLOCKS)
BLOCKS = get_size(device_name) / 1024;
if (!device_name || BLOCKS < 10) {
show_usage();
}
-#ifdef HAVE_MINIX2
+#ifdef BB_FEATURE_MINIX2
if (version2) {
if (namelen == 14)
magic = MINIX2_SUPER_MAGIC;
strcpy(tmp + 2, ".badblocks");
DEV = open(device_name, O_RDWR);
if (DEV < 0)
- die("unable to open %s");
+ error_msg_and_die("unable to open %s", device_name);
if (fstat(DEV, &statbuf) < 0)
- die("unable to stat %s");
+ 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)
- die("will not try to make filesystem on '%s'");
+ 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 HAVE_MINIX2
+#ifdef BB_FEATURE_MINIX2
if (version2) {
make_root_inode2();
make_bad_inode2();
}
mark_good_blocks();
write_tables();
- return 0;
+ return( 0);
+
}