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-rw-r--r--disk-utils/mkfs.minix.c861
1 files changed, 861 insertions, 0 deletions
diff --git a/disk-utils/mkfs.minix.c b/disk-utils/mkfs.minix.c
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+++ b/disk-utils/mkfs.minix.c
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+/*
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * mkfs.minix.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)
+ *
+ * 06.29.11 - Overall cleanups for util-linux and v3 support
+ * Davidlohr Bueso <dave@gnu.org>
+ *
+ * 06.20.15 - Do not infinite loop or crash on large devices
+ * Joshua Hudson <joshudson@gmail.com>
+ *
+ */
+
+#include <stdio.h>
+#include <time.h>
+#include <unistd.h>
+#include <string.h>
+#include <signal.h>
+#include <fcntl.h>
+#include <ctype.h>
+#include <stdlib.h>
+#include <termios.h>
+#include <sys/stat.h>
+#include <getopt.h>
+#include <err.h>
+
+#include "blkdev.h"
+#include "minix_programs.h"
+#include "nls.h"
+#include "pathnames.h"
+#include "bitops.h"
+#include "exitcodes.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 TEST_BUFFER_BLOCKS 16
+#define MAX_GOOD_BLOCKS 512
+
+#define MINIX_MAX_INODES 65535
+
+#define DEFAULT_FS_VERSION 1
+
+/*
+ * Global variables used in minix_programs.h inline functions
+ */
+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)
+
+struct fs_control {
+ char *device_name; /* device on a Minix file system is created */
+ int device_fd; /* open file descriptor of the device */
+ char *lockmode; /* as specified by --lock */
+ 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 char *inode_map;
+static char *zone_map;
+
+#define zone_in_use(x) (isset(zone_map,(x)-get_first_zone()+1) != 0)
+
+#define mark_inode(x) (setbit(inode_map,(x)))
+#define unmark_inode(x) (clrbit(inode_map,(x)))
+
+#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)
+{
+ 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);
+ fprintf(out, _(
+ " --lock[=<mode>] use exclusive device lock (%s, %s or %s)\n"), "yes", "no", "nonblock");
+ fputs(USAGE_SEPARATOR, out);
+ printf(USAGE_HELP_OPTIONS(25));
+ printf(USAGE_MAN_TAIL("mkfs.minix(8)"));
+ exit(MKFS_EX_OK);
+}
+
+#ifdef TEST_SCRIPT
+static inline time_t mkfs_minix_time(time_t *t)
+{
+ const char *str = getenv("MKFS_MINIX_TEST_SECOND_SINCE_EPOCH");
+ uint64_t sec;
+
+ if (str && sscanf(str, "%"SCNd64, &sec) == 1)
+ return sec;
+ return time(t);
+}
+#else /* !TEST_SCRIPT */
+# define mkfs_minix_time(x) time(x)
+#endif
+
+static void super_set_state(void)
+{
+ switch (fs_version) {
+ case 1:
+ case 2:
+ Super.s_state |= MINIX_VALID_FS;
+ Super.s_state &= ~MINIX_ERROR_FS;
+ break;
+ default: /* v3 */
+ break;
+ }
+}
+
+static void write_tables(const struct fs_control *ctl) {
+ unsigned long imaps = get_nimaps();
+ unsigned long zmaps = get_nzmaps();
+ size_t buffsz = get_inode_buffer_size();
+
+ /* Mark the super block valid. */
+ super_set_state();
+
+ if (lseek(ctl->device_fd, 0, SEEK_SET))
+ err(MKFS_EX_ERROR, _("%s: seek to boot block failed "
+ " 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(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(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(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(ctl->device_fd, inode_buffer, buffsz))
+ err(MKFS_EX_ERROR, _("%s: unable to write inodes"), ctl->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(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(struct fs_control *ctl) {
+ unsigned int blk;
+ unsigned int zones = get_nzones();
+ unsigned int first_zone = get_first_zone();
+
+ 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"), ctl->device_name);
+ good_blocks_table[ctl->fs_used_blocks] = blk;
+ ctl->fs_used_blocks++;
+ return blk;
+}
+
+static void mark_good_blocks(const struct fs_control *ctl) {
+ int blk;
+
+ for (blk=0 ; blk < ctl->fs_used_blocks ; blk++)
+ mark_zone(good_blocks_table[blk]);
+}
+
+static inline int next(unsigned long zone) {
+ unsigned long zones = get_nzones();
+ unsigned long first_zone = get_first_zone();
+
+ if (!zone)
+ zone = first_zone-1;
+ while (++zone < zones)
+ if (zone_in_use(zone))
+ return zone;
+ return 0;
+}
+
+static void make_bad_inode_v1(struct fs_control *ctl)
+{
+ struct minix_inode * inode = &Inode[MINIX_BAD_INO];
+ int i,j,zone;
+ int ind=0,dind=0;
+ unsigned short ind_block[MINIX_BLOCK_SIZE>>1];
+ unsigned short dind_block[MINIX_BLOCK_SIZE>>1];
+
+#define NEXT_BAD (zone = next(zone))
+
+ if (!ctl->fs_bad_blocks)
+ return;
+ mark_inode(MINIX_BAD_INO);
+ inode->i_nlinks = 1;
+ inode->i_time = mkfs_minix_time(NULL);
+ inode->i_mode = S_IFREG + 0000;
+ 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(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(ctl);
+ memset(dind_block,0,MINIX_BLOCK_SIZE);
+ for (i=0 ; i<512 ; i++) {
+ 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;
+ if (!NEXT_BAD)
+ goto end_bad;
+ }
+ }
+ errx(MKFS_EX_ERROR, _("%s: too many bad blocks"), ctl->device_name);
+end_bad:
+ if (ind)
+ write_block(ctl, ind, (char *) ind_block);
+ if (dind)
+ write_block(ctl, dind, (char *) dind_block);
+}
+
+static void make_bad_inode_v2_v3 (struct fs_control *ctl)
+{
+ struct minix2_inode *inode = &Inode2[MINIX_BAD_INO];
+ int i, j, zone;
+ int ind = 0, dind = 0;
+ unsigned long ind_block[MINIX_BLOCK_SIZE >> 2];
+ unsigned long dind_block[MINIX_BLOCK_SIZE >> 2];
+
+ if (!ctl->fs_bad_blocks)
+ return;
+ mark_inode (MINIX_BAD_INO);
+ inode->i_nlinks = 1;
+ inode->i_atime = inode->i_mtime = inode->i_ctime = mkfs_minix_time(NULL);
+ inode->i_mode = S_IFREG + 0000;
+ 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 (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 (ctl);
+ memset (dind_block, 0, MINIX_BLOCK_SIZE);
+ for (i = 0; i < 256; i++) {
+ 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;
+ if (!NEXT_BAD)
+ goto end_bad;
+ }
+ }
+ /* Could make triple indirect block here */
+ errx(MKFS_EX_ERROR, _("%s: too many bad blocks"), ctl->device_name);
+ end_bad:
+ if (ind)
+ write_block (ctl, ind, (char *) ind_block);
+ if (dind)
+ write_block (ctl, dind, (char *) dind_block);
+}
+
+static void make_bad_inode(struct fs_control *ctl)
+{
+ if (fs_version < 2) {
+ make_bad_inode_v1(ctl);
+ return;
+ }
+ make_bad_inode_v2_v3(ctl);
+}
+
+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(ctl);
+ inode->i_nlinks = 2;
+ inode->i_time = mkfs_minix_time(NULL);
+ if (ctl->fs_bad_blocks)
+ inode->i_size = 3 * ctl->fs_dirsize;
+ else {
+ 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(ctl, inode->i_zone[0],root_block);
+}
+
+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 (ctl);
+ inode->i_nlinks = 2;
+ inode->i_atime = inode->i_mtime = inode->i_ctime = mkfs_minix_time(NULL);
+
+ if (ctl->fs_bad_blocks)
+ inode->i_size = 3 * ctl->fs_dirsize;
+ else {
+ 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 (ctl, inode->i_zone[0], root_block);
+}
+
+static void make_root_inode(struct fs_control *ctl)
+{
+ 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(const struct fs_control *ctl)
+{
+ switch (fs_version) {
+ case 3:
+ Super3.s_zones = ctl->fs_blocks;
+ break;
+ case 2:
+ Super.s_zones = ctl->fs_blocks;
+ break;
+ default: /* v1 */
+ Super.s_nzones = ctl->fs_blocks;
+ break;
+ }
+}
+
+static void super_init_maxsize(void)
+{
+ switch (fs_version) {
+ case 3:
+ Super3.s_max_size = 2147483647L;
+ break;
+ case 2:
+ Super.s_max_size = 0x7fffffff;
+ break;
+ default: /* v1 */
+ Super.s_max_size = (7+512+512*512)*1024;
+ break;
+ }
+}
+
+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(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(ctl->fs_blocks - (1 + get_nimaps() + inode_blocks()),
+ BITS_PER_BLOCK + 1);
+ Super.s_firstdatazone = first_zone_data();
+ break;
+ }
+}
+
+static void super_set_magic(const struct fs_control *ctl)
+{
+ switch (fs_version) {
+ case 3:
+ Super3.s_magic = ctl->fs_magic;
+ break;
+ default:
+ Super.s_magic = ctl->fs_magic;
+ break;
+ }
+}
+
+static void setup_tables(const struct fs_control *ctl) {
+ unsigned long inodes, zmaps, imaps, zones, i;
+
+ super_block_buffer = xcalloc(1, MINIX_BLOCK_SIZE);
+
+ memset(boot_block_buffer,0,512);
+ super_set_magic(ctl);
+
+ if (fs_version == 3) {
+ Super3.s_log_zone_size = 0;
+ Super3.s_blocksize = MINIX_BLOCK_SIZE;
+ }
+ else {
+ Super.s_log_zone_size = 0;
+ }
+
+ super_init_maxsize();
+ super_set_nzones(ctl);
+ zones = get_nzones();
+
+ /* 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 = 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) &
+ ~(MINIX2_INODES_PER_BLOCK - 1));
+ else
+ inodes = ((inodes + MINIX_INODES_PER_BLOCK - 1) &
+ ~(MINIX_INODES_PER_BLOCK - 1));
+
+ if (fs_version == 3)
+ Super3.s_ninodes = inodes;
+ else {
+ if (inodes > MINIX_MAX_INODES)
+ inodes = MINIX_MAX_INODES;
+ Super.s_ninodes = 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 = 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 = xmalloc(get_inode_buffer_size());
+ memset(inode_buffer,0, get_inode_buffer_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/writable.
+ */
+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(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"),
+ ctl->device_name);
+
+ /* Try the read */
+ 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"));
+ }
+ got /= MINIX_BLOCK_SIZE;
+ return got;
+}
+
+static unsigned int currently_testing = 0;
+
+static void alarm_intr(int alnum __attribute__ ((__unused__))) {
+ unsigned long zones = get_nzones();
+
+ 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(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();
+
+ currently_testing=0;
+ signal(SIGALRM,alarm_intr);
+ alarm(5);
+ while (currently_testing < zones) {
+ 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"),
+ ctl->device_name);
+ try = TEST_BUFFER_BLOCKS;
+ if (currently_testing + try > zones)
+ try = zones-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"), ctl->device_name);
+ mark_zone(currently_testing);
+ ctl->fs_bad_blocks++;
+ currently_testing++;
+ }
+ 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(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"),
+ ctl->device_name);
+
+ while (!feof(listfile)) {
+ 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"),
+ ctl->device_name);
+ }
+ mark_zone(blockno);
+ ctl->fs_bad_blocks++;
+ }
+ fclose(listfile);
+
+ 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 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, &sectorsize) == -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;
+ struct stat statbuf;
+ char * listfile = NULL;
+ enum {
+ OPT_LOCK = CHAR_MAX + 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'},
+ {"lock",optional_argument, NULL, OPT_LOCK},
+ {NULL, 0, NULL, 0}
+ };
+
+ setlocale(LC_ALL, "");
+ bindtextdomain(PACKAGE, LOCALEDIR);
+ textdomain(PACKAGE);
+ close_stdout_atexit();
+
+ strutils_set_exitcode(MKFS_EX_USAGE);
+
+ while ((i = getopt_long(argc, argv, "1v23n:i:cl:Vh", longopts, NULL)) != -1)
+ switch (i) {
+ case '1':
+ fs_version = 1;
+ break;
+ case 'v': /* kept for backwards compatibility */
+ warnx(_("-v is ambiguous, use '-2' instead"));
+ /* fallthrough */
+ case '2':
+ fs_version = 2;
+ break;
+ case '3':
+ fs_version = 3;
+ ctl.fs_namelen = 60;
+ break;
+ 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 OPT_LOCK:
+ ctl.lockmode = "1";
+ if (optarg) {
+ if (*optarg == '=')
+ optarg++;
+ ctl.lockmode = optarg;
+ }
+ break;
+ case 'V':
+ print_version(MKFS_EX_OK);
+ case 'h':
+ usage();
+ default:
+ errtryhelp(MKFS_EX_USAGE);
+ }
+ argc -= optind;
+ argv += optind;
+ if (argc > 0) {
+ ctl.device_name = argv[0];
+ argc--;
+ argv++;
+ }
+ if (argc > 0)
+ ctl.fs_blocks = strtoul_or_err(argv[0], _("failed to parse number of blocks"));
+
+ if (!ctl.device_name) {
+ warnx(_("no device specified"));
+ errtryhelp(MKFS_EX_USAGE);
+ }
+ 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);
+ if (blkdev_lock(ctl.device_fd, ctl.device_name, ctl.lockmode) != 0)
+ exit(MKFS_EX_ERROR);
+ determine_device_blocks(&ctl, &statbuf);
+ setup_tables(&ctl);
+ if (ctl.check_blocks)
+ check_blocks(&ctl);
+ else if (listfile)
+ get_list_blocks(&ctl, listfile);
+
+ make_root_inode(&ctl);
+ make_bad_inode(&ctl);
+
+ mark_good_blocks(&ctl);
+ write_tables(&ctl);
+ if (close_fd(ctl.device_fd) != 0)
+ err(MKFS_EX_ERROR, _("write failed"));
+
+ return MKFS_EX_OK;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-07 20:48:13 +0000