*
* 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)
* 06.29.11 - Overall cleanups for util-linux and v3 support
* Davidlohr Bueso <dave@gnu.org>
*
- * Usage: mkfs [-c | -l filename ] [-12v3] [-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
- * -1 for v1 filesystem
- * -2,-v for v2 filesystem
- * -3 for v3 filesystem
+ * 06.20.15 - Do not infinite loop or crash on large devices
+ * Joshua Hudson <joshudson@gmail.com>
*
- * 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 :-).
*/
#include <stdio.h>
#include <stdlib.h>
#include <termios.h>
#include <sys/stat.h>
-#include <mntent.h>
#include <getopt.h>
#include <err.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 MINIX_MAX_INODES 65535
+#define DEFAULT_FS_VERSION 1
+
/*
- * Global variables used in minix_programs.h inline fuctions
+ * Global variables used in minix_programs.h inline functions
*/
-int fs_version = 1;
+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)
-static char *program_name = "mkfs";
-static char *device_name;
-static int DEV = -1;
-static unsigned long long BLOCKS;
-static int check;
-static int badblocks;
-
-/*
- * default (changed to 30, per Linus's
- * suggestion, Sun Nov 21 08:05:07 1993)
- * This should be changed in the future to 60,
- * since v3 needs to be the default nowadays (2011)
- */
-static size_t namelen = 30;
-static size_t dirsize = 32;
-static int magic = MINIX_SUPER_MAGIC2;
+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 int used_good_blocks;
-static unsigned long req_nr_inodes;
-
static char *inode_map;
static char *zone_map;
#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) {
- errx(MKFS_EX_USAGE, _("Usage: %s [-c | -l filename] [-nXX] [-iXX] /dev/name [blocks]"),
- program_name);
+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);
}
-/*
- * 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 (_PATH_MOUNTED, "r")) == NULL)
- return;
- while ((mnt = getmntent (f)) != NULL)
- if (strcmp (device_name, mnt->mnt_fsname) == 0)
- break;
- endmntent (f);
- if (!mnt)
- return;
+#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;
- errx(MKFS_EX_ERROR, _("%s is mounted; will not make a filesystem here!"),
- device_name);
+ 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)
{
}
}
-static void write_tables(void) {
+static void write_tables(const struct fs_control *ctl) {
unsigned long imaps = get_nimaps();
unsigned long zmaps = get_nzmaps();
- unsigned long buffsz = get_inode_buffer_size();
+ size_t buffsz = get_inode_buffer_size();
/* Mark the super block valid. */
super_set_state();
- if (lseek(DEV, 0, SEEK_SET))
+ if (lseek(ctl->device_fd, 0, SEEK_SET))
err(MKFS_EX_ERROR, _("%s: seek to boot block failed "
- " in write_tables"), device_name);
- if (write_all(DEV, boot_block_buffer, 512))
- err(MKFS_EX_ERROR, _("%s: unable to clear boot sector"), device_name);
- if (MINIX_BLOCK_SIZE != lseek(DEV, MINIX_BLOCK_SIZE, SEEK_SET))
- err(MKFS_EX_ERROR, _("%s: seek failed in write_tables"), device_name);
+ " 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(DEV, super_block_buffer, MINIX_BLOCK_SIZE))
- err(MKFS_EX_ERROR, _("%s: unable to write super-block"), 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(DEV, inode_map, imaps * MINIX_BLOCK_SIZE))
- err(MKFS_EX_ERROR, _("%s: unable to write inode map"), 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(DEV, zone_map, zmaps * MINIX_BLOCK_SIZE))
- err(MKFS_EX_ERROR, _("%s: unable to write zone map"), 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(DEV, inode_buffer, buffsz))
- err(MKFS_EX_ERROR, _("%s: unable to write inodes"), 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(int blk, char * buffer) {
- if (blk*MINIX_BLOCK_SIZE != lseek(DEV, blk*MINIX_BLOCK_SIZE, SEEK_SET))
- errx(MKFS_EX_ERROR, _("%s: seek failed in write_block"), 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(DEV, buffer, MINIX_BLOCK_SIZE))
- errx(MKFS_EX_ERROR, _("%s: write failed in write_block"), 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(void) {
+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 (used_good_blocks+1 >= MAX_GOOD_BLOCKS)
- errx(MKFS_EX_ERROR, _("%s: too many bad blocks"), device_name);
- if (used_good_blocks)
- blk = good_blocks_table[used_good_blocks-1]+1;
+ 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"), device_name);
- good_blocks_table[used_good_blocks] = blk;
- used_good_blocks++;
+ 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(void) {
+static void mark_good_blocks(const struct fs_control *ctl) {
int blk;
- for (blk=0 ; blk < used_good_blocks ; blk++)
+ for (blk=0 ; blk < ctl->fs_used_blocks ; blk++)
mark_zone(good_blocks_table[blk]);
}
return 0;
}
-static void make_bad_inode_v1(void)
+static void make_bad_inode_v1(struct fs_control *ctl)
{
struct minix_inode * inode = &Inode[MINIX_BAD_INO];
int i,j,zone;
#define NEXT_BAD (zone = next(zone))
- if (!badblocks)
+ if (!ctl->fs_bad_blocks)
return;
mark_inode(MINIX_BAD_INO);
inode->i_nlinks = 1;
- inode->i_time = time(NULL);
+ inode->i_time = mkfs_minix_time(NULL);
inode->i_mode = S_IFREG + 0000;
- inode->i_size = badblocks*MINIX_BLOCK_SIZE;
+ 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();
+ 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();
+ inode->i_zone[8] = dind = get_free_block(ctl);
memset(dind_block,0,MINIX_BLOCK_SIZE);
for (i=0 ; i<512 ; i++) {
- write_block(ind,(char *) ind_block);
- dind_block[i] = ind = get_free_block();
+ 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;
goto end_bad;
}
}
- errx(MKFS_EX_ERROR, _("%s: too many bad blocks"), device_name);
+ errx(MKFS_EX_ERROR, _("%s: too many bad blocks"), ctl->device_name);
end_bad:
if (ind)
- write_block(ind, (char *) ind_block);
+ write_block(ctl, ind, (char *) ind_block);
if (dind)
- write_block(dind, (char *) dind_block);
+ write_block(ctl, dind, (char *) dind_block);
}
-static void make_bad_inode_v2_v3 (void)
+static void make_bad_inode_v2_v3 (struct fs_control *ctl)
{
struct minix2_inode *inode = &Inode2[MINIX_BAD_INO];
int i, j, zone;
unsigned long ind_block[MINIX_BLOCK_SIZE >> 2];
unsigned long dind_block[MINIX_BLOCK_SIZE >> 2];
- if (!badblocks)
+ if (!ctl->fs_bad_blocks)
return;
mark_inode (MINIX_BAD_INO);
inode->i_nlinks = 1;
- inode->i_atime = inode->i_mtime = inode->i_ctime = time (NULL);
+ inode->i_atime = inode->i_mtime = inode->i_ctime = mkfs_minix_time(NULL);
inode->i_mode = S_IFREG + 0000;
- inode->i_size = badblocks * MINIX_BLOCK_SIZE;
+ 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 ();
+ 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 ();
+ inode->i_zone[8] = dind = get_free_block (ctl);
memset (dind_block, 0, MINIX_BLOCK_SIZE);
for (i = 0; i < 256; i++) {
- write_block (ind, (char *) ind_block);
- dind_block[i] = ind = get_free_block ();
+ 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;
}
}
/* Could make triple indirect block here */
- errx(MKFS_EX_ERROR, _("%s: too many bad blocks"), device_name);
+ errx(MKFS_EX_ERROR, _("%s: too many bad blocks"), ctl->device_name);
end_bad:
if (ind)
- write_block (ind, (char *) ind_block);
+ write_block (ctl, ind, (char *) ind_block);
if (dind)
- write_block (dind, (char *) dind_block);
+ write_block (ctl, dind, (char *) dind_block);
}
-static void make_bad_inode(void)
+static void make_bad_inode(struct fs_control *ctl)
{
- if (fs_version < 2)
- return make_bad_inode_v1();
- return make_bad_inode_v2_v3();
+ if (fs_version < 2) {
+ make_bad_inode_v1(ctl);
+ return;
+ }
+ make_bad_inode_v2_v3(ctl);
}
-static void make_root_inode_v1(void) {
+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();
+ inode->i_zone[0] = get_free_block(ctl);
inode->i_nlinks = 2;
- inode->i_time = time(NULL);
- if (badblocks)
- inode->i_size = 3*dirsize;
+ inode->i_time = mkfs_minix_time(NULL);
+ if (ctl->fs_bad_blocks)
+ inode->i_size = 3 * ctl->fs_dirsize;
else {
- root_block[2*dirsize] = '\0';
- root_block[2*dirsize+1] = '\0';
- inode->i_size = 2*dirsize;
+ 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(inode->i_zone[0],root_block);
+ write_block(ctl, inode->i_zone[0],root_block);
}
-static void make_root_inode_v2_v3 (void) {
+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 ();
+ inode->i_zone[0] = get_free_block (ctl);
inode->i_nlinks = 2;
- inode->i_atime = inode->i_mtime = inode->i_ctime = time (NULL);
+ inode->i_atime = inode->i_mtime = inode->i_ctime = mkfs_minix_time(NULL);
- if (badblocks)
- inode->i_size = 3 * dirsize;
+ if (ctl->fs_bad_blocks)
+ inode->i_size = 3 * ctl->fs_dirsize;
else {
- root_block[2 * dirsize] = '\0';
- inode->i_size = 2 * dirsize;
+ 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 (inode->i_zone[0], root_block);
+ write_block (ctl, inode->i_zone[0], root_block);
}
-static void make_root_inode(void)
+static void make_root_inode(struct fs_control *ctl)
{
- if (fs_version < 2)
- return make_root_inode_v1();
- return make_root_inode_v2_v3();
+ 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(void)
+static void super_set_nzones(const struct fs_control *ctl)
{
switch (fs_version) {
case 3:
- Super3.s_zones = BLOCKS;
+ Super3.s_zones = ctl->fs_blocks;
break;
case 2:
- Super.s_zones = BLOCKS;
+ Super.s_zones = ctl->fs_blocks;
break;
default: /* v1 */
- Super.s_nzones = BLOCKS;
+ Super.s_nzones = ctl->fs_blocks;
break;
}
}
}
}
-static void super_set_map_blocks(unsigned long inodes)
+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(BLOCKS - (1+get_nimaps()+inode_blocks()),
- BITS_PER_BLOCK+1);
+ 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(BLOCKS - (1+get_nimaps()+inode_blocks()),
- BITS_PER_BLOCK+1);
+ 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(void)
+static void super_set_magic(const struct fs_control *ctl)
{
switch (fs_version) {
case 3:
- Super3.s_magic = magic;
+ Super3.s_magic = ctl->fs_magic;
break;
default:
- Super.s_magic = magic;
+ Super.s_magic = ctl->fs_magic;
break;
}
}
-static void setup_tables(void) {
+static void setup_tables(const struct fs_control *ctl) {
unsigned long inodes, zmaps, imaps, zones, i;
- super_block_buffer = calloc(1, MINIX_BLOCK_SIZE);
- if (!super_block_buffer)
- err(MKFS_EX_ERROR, _("%s: unable to alloc buffer for superblock"),
- device_name);
+ super_block_buffer = xcalloc(1, MINIX_BLOCK_SIZE);
memset(boot_block_buffer,0,512);
- super_set_magic();
+ super_set_magic(ctl);
if (fs_version == 3) {
Super3.s_log_zone_size = 0;
}
super_init_maxsize();
- super_set_nzones();
+ super_set_nzones(ctl);
zones = get_nzones();
- /* some magic nrs: 1 inode / 3 blocks */
- if ( req_nr_inodes == 0 )
- inodes = BLOCKS/3;
+ /* 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 = req_nr_inodes;
+ 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) &
if (fs_version == 3)
Super3.s_ninodes = inodes;
else {
- Super.s_ninodes = inodes;
if (inodes > MINIX_MAX_INODES)
inodes = MINIX_MAX_INODES;
+ Super.s_ninodes = inodes;
}
-
- super_set_map_blocks(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 = malloc(imaps * MINIX_BLOCK_SIZE);
- zone_map = malloc(zmaps * MINIX_BLOCK_SIZE);
- if (!inode_map || !zone_map)
- err(MKFS_EX_ERROR, _("%s: unable to allocate buffers for maps"),
- device_name);
+ 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 = malloc(get_inode_buffer_size());
- if (!inode_buffer)
- err(MKFS_EX_ERROR, _("%s: unable to allocate buffer for inodes"),
- device_name);
+
+ inode_buffer = xmalloc(get_inode_buffer_size());
memset(inode_buffer,0, get_inode_buffer_size());
- printf(_("%lu inodes\n"), inodes);
- printf(_("%lu blocks\n"), zones);
- printf(_("Firstdatazone=%ld (%ld)\n"), get_first_zone(), first_zone_data());
- printf(_("Zonesize=%d\n"),MINIX_BLOCK_SIZE<<get_zone_size());
- printf(_("Maxsize=%ld\n\n"),get_max_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/writeable.
+ * blocks readable/writable.
*/
-static long do_check(char * buffer, int try, unsigned int current_block) {
- long got;
-
+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(DEV, current_block * MINIX_BLOCK_SIZE, SEEK_SET) !=
+ 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"),
- device_name);
+ ctl->device_name);
/* Try the read */
- got = read(DEV, buffer, try * MINIX_BLOCK_SIZE);
- if (got < 0) got = 0;
+ 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"));
}
fflush(stdout);
}
-static void check_blocks(void) {
- int try,got;
+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();
signal(SIGALRM,alarm_intr);
alarm(5);
while (currently_testing < zones) {
- if (lseek(DEV,currently_testing*MINIX_BLOCK_SIZE,SEEK_SET) !=
+ 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"),
- device_name);
+ ctl->device_name);
try = TEST_BUFFER_BLOCKS;
if (currently_testing + try > zones)
try = zones-currently_testing;
- got = do_check(buffer, try, 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"), device_name);
+ "cannot make fs"), ctl->device_name);
mark_zone(currently_testing);
- badblocks++;
+ ctl->fs_bad_blocks++;
currently_testing++;
}
- if (badblocks > 1)
- printf(_("%d bad blocks\n"), badblocks);
- else if (badblocks == 1)
- printf(_("one bad block\n"));
+ 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(char *filename) {
+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"),
- device_name);
+ ctl->device_name);
while (!feof(listfile)) {
- if (fscanf(listfile,"%ld\n", &blockno) != 1) {
- printf(_("badblock number input error on line %d\n"), badblocks + 1);
+ 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"),
- device_name);
+ ctl->device_name);
}
mark_zone(blockno);
- badblocks++;
+ ctl->fs_bad_blocks++;
}
fclose(listfile);
- if(badblocks > 1)
- printf(_("%d bad blocks\n"), badblocks);
- else if (badblocks == 1)
- printf(_("one bad block\n"));
+ if (ctl->fs_bad_blocks > 0)
+ printf(P_("%d bad block\n", "%d bad blocks\n", ctl->fs_bad_blocks), ctl->fs_bad_blocks);
}
-int main(int argc, char ** argv) {
+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;
- char * tmp;
struct stat statbuf;
char * listfile = NULL;
- char * p;
-
- if (argc && *argv)
- program_name = *argv;
- if ((p = strrchr(program_name, '/')) != NULL)
- program_name = p+1;
+ 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);
- atexit(close_stdout);
+ close_stdout_atexit();
- if (argc == 2 &&
- (!strcmp(argv[1], "-V") || !strcmp(argv[1], "--version"))) {
- printf(_("%s (%s)\n"), program_name, PACKAGE_STRING);
- exit(0);
- }
+ strutils_set_exitcode(MKFS_EX_USAGE);
- if (INODE_SIZE * MINIX_INODES_PER_BLOCK != MINIX_BLOCK_SIZE)
- errx(MKFS_EX_ERROR, _("%s: bad inode size"), device_name);
- if (INODE2_SIZE * MINIX2_INODES_PER_BLOCK != MINIX_BLOCK_SIZE)
- errx(MKFS_EX_ERROR, _("%s: bad inode size"), device_name);
-
- opterr = 0;
- while ((i = getopt(argc, argv, "ci:l:n:v123")) != -1)
+ while ((i = getopt_long(argc, argv, "1v23n:i:cl:Vh", longopts, NULL)) != -1)
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)
- usage();
- if (i == 14)
- magic = MINIX_SUPER_MAGIC;
- else if (i == 30)
- magic = MINIX_SUPER_MAGIC2;
- else
- usage();
- namelen = i;
- dirsize = i+2;
- break;
case '1':
fs_version = 1;
break;
+ case 'v': /* kept for backwards compatibility */
+ warnx(_("-v is ambiguous, use '-2' instead"));
+ /* fallthrough */
case '2':
- case 'v': /* kept for backwards compatiblitly */
fs_version = 2;
break;
case '3':
fs_version = 3;
- namelen = 60;
- dirsize = 64;
+ ctl.fs_namelen = 60;
break;
- default:
+ 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 && !device_name) {
- device_name = argv[0];
+ if (argc > 0) {
+ ctl.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"));
- usage();
- }
- }
+ if (argc > 0)
+ ctl.fs_blocks = strtoul_or_err(argv[0], _("failed to parse number of blocks"));
- if (!device_name) {
- usage();
- }
- check_mount(); /* is it already mounted? */
- tmp = root_block;
- if (fs_version == 3) {
- *(uint32_t *)tmp = 1;
- strcpy(tmp+4,".");
- tmp += dirsize;
- *(uint32_t *)tmp = 1;
- strcpy(tmp+4,"..");
- tmp += dirsize;
- *(uint32_t *)tmp = 2;
- strcpy(tmp+4, ".badblocks");
- } else {
- *(uint16_t *)tmp = 1;
- strcpy(tmp+2,".");
- tmp += dirsize;
- *(uint16_t *)tmp = 1;
- strcpy(tmp+2,"..");
- tmp += dirsize;
- *(uint16_t *)tmp = 2;
- strcpy(tmp+2, ".badblocks");
+ if (!ctl.device_name) {
+ warnx(_("no device specified"));
+ errtryhelp(MKFS_EX_USAGE);
}
- if (stat(device_name, &statbuf) < 0)
- err(MKFS_EX_ERROR, _("%s: stat failed"), device_name);
- if (S_ISBLK(statbuf.st_mode))
- DEV = open(device_name,O_RDWR | O_EXCL);
- else
- DEV = open(device_name,O_RDWR);
-
- if (DEV<0)
- err(MKFS_EX_ERROR, _("%s: open failed"), device_name);
-
- if (S_ISBLK(statbuf.st_mode)) {
- int sectorsize;
-
- if (blkdev_get_sector_size(DEV, §orsize) == -1)
- sectorsize = DEFAULT_SECTOR_SIZE; /* kernel < 2.3.3 */
-
- if (blkdev_is_misaligned(DEV))
- warnx(_("%s: device is misaligned"), device_name);
-
- if (MINIX_BLOCK_SIZE < sectorsize)
- errx(MKFS_EX_ERROR, _("block size smaller than physical "
- "sector size of %s"), device_name);
- if (!BLOCKS) {
- if (blkdev_get_size(DEV, &BLOCKS) == -1)
- errx(MKFS_EX_ERROR, _("cannot determine size of %s"),
- device_name);
- BLOCKS /= MINIX_BLOCK_SIZE;
- }
- } else if (!S_ISBLK(statbuf.st_mode)) {
- if (!BLOCKS)
- BLOCKS = statbuf.st_size / MINIX_BLOCK_SIZE;
- check=0;
- } else if (statbuf.st_rdev == 0x0300 || statbuf.st_rdev == 0x0340)
- errx(MKFS_EX_ERROR, _("will not try to make filesystem on '%s'"), device_name);
- if (BLOCKS < 10)
- errx(MKFS_EX_ERROR, _("%s: number of blocks too small"), device_name);
-
- if (fs_version == 3)
- magic = MINIX3_SUPER_MAGIC;
- else if (fs_version == 2) {
- if (namelen == 14)
- magic = MINIX2_SUPER_MAGIC;
- else
- magic = MINIX2_SUPER_MAGIC2;
- } else /* fs_version == 1 */
- if (BLOCKS > MINIX_MAX_INODES)
- BLOCKS = MINIX_MAX_INODES;
- setup_tables();
- if (check)
- check_blocks();
+ 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(listfile);
+ get_list_blocks(&ctl, listfile);
- make_root_inode();
- make_bad_inode();
+ make_root_inode(&ctl);
+ make_bad_inode(&ctl);
- mark_good_blocks();
- write_tables();
- close(DEV);
+ mark_good_blocks(&ctl);
+ write_tables(&ctl);
+ if (close_fd(ctl.device_fd) != 0)
+ err(MKFS_EX_ERROR, _("write failed"));
- return 0;
+ return MKFS_EX_OK;
}
projects / thirdparty / util-linux.git / blobdiff