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* util.c --- helper functions used by tune2fs and mke2fs
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* Copyright 1995, 1996, 1997, 1998, 1999, 2000 by Theodore Ts'o.
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* This file may be redistributed under the terms of the GNU Public
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#define _LARGEFILE_SOURCE
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#define _LARGEFILE64_SOURCE
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#ifdef HAVE_LINUX_MAJOR_H
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#include <linux/major.h>
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#include <sys/types.h>
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#ifdef HAVE_SYS_STAT_H
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#include "et/com_err.h"
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#include "ext2fs/ext2_fs.h"
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#include "ext2fs/ext2fs.h"
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#include "nls-enable.h"
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#include "blkid/blkid.h"
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char *journal_location_string = NULL;
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#ifndef HAVE_STRCASECMP
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int strcasecmp (char *s1, char *s2)
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int ch1 = *s1++, ch2 = *s2++;
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return *s1 ? 1 : *s2 ? -1 : 0;
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* Given argv[0], return the program name.
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char *get_progname(char *argv_zero)
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cp = strrchr(argv_zero, '/');
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static jmp_buf alarm_env;
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static void alarm_signal(int signal)
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longjmp(alarm_env, 1);
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void proceed_question(int delay)
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const char *short_yes = _("yY");
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if (setjmp(alarm_env)) {
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signal(SIGALRM, SIG_IGN);
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printf(_("<proceeding>\n"));
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signal(SIGALRM, alarm_signal);
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printf(_("Proceed anyway (or wait %d seconds) ? (y,n) "),
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fputs(_("Proceed anyway? (y,n) "), stdout);
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if (!fgets(buf, sizeof(buf), stdin) ||
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strchr(short_yes, buf[0]) == 0) {
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signal(SIGALRM, SIG_IGN);
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static void print_ext2_info(const char *device)
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struct ext2_super_block *sb;
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retval = ext2fs_open2(device, 0, EXT2_FLAG_64BITS, 0, 0,
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unix_io_manager, &fs);
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if (sb->s_last_mounted[0]) {
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memset(buf, 0, sizeof(buf));
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strncpy(buf, sb->s_last_mounted,
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sizeof(sb->s_last_mounted));
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printf(_("\tlast mounted on %s on %s"), buf,
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printf(_("\tlast mounted on %s"), ctime(&tm));
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} else if (sb->s_mkfs_time) {
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tm = sb->s_mkfs_time;
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printf(_("\tcreated on %s"), ctime(&tm));
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} else if (sb->s_wtime) {
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printf(_("\tlast modified on %s"), ctime(&tm));
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* return 1 if there is no partition table, 0 if a partition table is
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* detected, and -1 on an error.
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static int check_partition_table(const char *device)
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#ifdef HAVE_BLKID_PROBE_ENABLE_PARTITIONS
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pr = blkid_new_probe_from_filename(device);
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ret = blkid_probe_enable_partitions(pr, 1);
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ret = blkid_probe_enable_superblocks(pr, 0);
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ret = blkid_do_fullprobe(pr);
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ret = blkid_probe_lookup_value(pr, "PTTYPE", &value, NULL);
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fprintf(stderr, _("Found a %s partition table in %s\n"),
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blkid_free_probe(pr);
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* return 1 if the device looks plausible, creating the file if necessary
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int check_plausibility(const char *device, int flags, int *ret_is_dev)
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int fd, ret, is_dev = 0;
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ext2fs_struct_stat s;
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blkid_cache cache = NULL;
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char *fs_type = NULL;
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char *fs_label = NULL;
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fd = open(device, fl, 0666);
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if ((fd < 0) && (errno == ENOENT) && (flags & CREATE_FILE)) {
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fd = open(device, fl, 0666);
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if (fd >= 0 && (flags & VERBOSE_CREATE))
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printf(_("Creating regular file %s\n"), device);
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fprintf(stderr, _("Could not open %s: %s\n"),
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device, error_message(errno));
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fputs(_("\nThe device apparently does not exist; "
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"did you specify it correctly?\n"), stderr);
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if (ext2fs_fstat(fd, &s) < 0) {
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if (S_ISBLK(s.st_mode))
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#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
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/* On FreeBSD, all disk devices are character specials */
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if (S_ISCHR(s.st_mode))
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*ret_is_dev = is_dev;
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if ((flags & CHECK_BLOCK_DEV) && !is_dev) {
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printf(_("%s is not a block special device.\n"), device);
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* Note: we use the older-style blkid API's here because we
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* want as much functionality to be available when using the
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* internal blkid library, when e2fsprogs is compiled for
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* non-Linux systems that will probably not have the libraries
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* from util-linux available. We only use the newer
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* blkid-probe interfaces to access functionality not
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* available in the original blkid library.
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if ((flags & CHECK_FS_EXIST) && blkid_get_cache(&cache, NULL) >= 0) {
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fs_type = blkid_get_tag_value(cache, "TYPE", device);
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fs_label = blkid_get_tag_value(cache, "LABEL", device);
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blkid_put_cache(cache);
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printf(_("%s contains a %s file system "
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"labelled '%s'\n"), device, fs_type, fs_label);
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printf(_("%s contains a %s file system\n"), device,
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if (strncmp(fs_type, "ext", 3) == 0)
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print_ext2_info(device);
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ret = check_partition_table(device);
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#ifdef HAVE_LINUX_MAJOR_H
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#define MAJOR(dev) ((dev)>>8)
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#define MINOR(dev) ((dev) & 0xff)
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#ifndef SCSI_BLK_MAJOR
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#ifdef SCSI_DISK0_MAJOR
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#ifdef SCSI_DISK8_MAJOR
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#define SCSI_DISK_MAJOR(M) ((M) == SCSI_DISK0_MAJOR || \
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((M) >= SCSI_DISK1_MAJOR && (M) <= SCSI_DISK7_MAJOR) || \
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((M) >= SCSI_DISK8_MAJOR && (M) <= SCSI_DISK15_MAJOR))
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#define SCSI_DISK_MAJOR(M) ((M) == SCSI_DISK0_MAJOR || \
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((M) >= SCSI_DISK1_MAJOR && (M) <= SCSI_DISK7_MAJOR))
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#endif /* defined(SCSI_DISK8_MAJOR) */
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#define SCSI_BLK_MAJOR(M) (SCSI_DISK_MAJOR((M)) || (M) == SCSI_CDROM_MAJOR)
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#define SCSI_BLK_MAJOR(M) ((M) == SCSI_DISK_MAJOR || (M) == SCSI_CDROM_MAJOR)
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#endif /* defined(SCSI_DISK0_MAJOR) */
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#endif /* defined(SCSI_BLK_MAJOR) */
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if (((MAJOR(s.st_rdev) == HD_MAJOR &&
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MINOR(s.st_rdev)%64 == 0) ||
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(SCSI_BLK_MAJOR(MAJOR(s.st_rdev)) &&
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MINOR(s.st_rdev)%16 == 0))) {
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printf(_("%s is entire device, not just one partition!\n"),
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void check_mount(const char *device, int force, const char *type)
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retval = ext2fs_check_if_mounted(device, &mount_flags);
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com_err("ext2fs_check_if_mount", retval,
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_("while determining whether %s is mounted."),
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if (mount_flags & EXT2_MF_MOUNTED) {
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fprintf(stderr, _("%s is mounted; "), device);
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fputs(_("mke2fs forced anyway. Hope /etc/mtab is "
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"incorrect.\n"), stderr);
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fprintf(stderr, _("will not make a %s here!\n"), type);
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if (mount_flags & EXT2_MF_BUSY) {
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fprintf(stderr, _("%s is apparently in use by the system; "),
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fputs(_("mke2fs forced anyway.\n"), stderr);
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void parse_journal_opts(const char *opts)
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char *buf, *token, *next, *p, *arg;
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int journal_usage = 0;
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fputs(_("Couldn't allocate memory to parse journal "
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"options!\n"), stderr);
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for (token = buf; token && *token; token = next) {
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p = strchr(token, ',');
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arg = strchr(token, '=');
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printf("Journal option=%s, argument=%s\n", token,
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if (strcmp(token, "device") == 0) {
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journal_device = blkid_get_devname(NULL, arg, NULL);
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if (!journal_device) {
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fprintf(stderr, _("\nCould not find "
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"journal device matching %s\n"),
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} else if (strcmp(token, "size") == 0) {
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journal_size = strtoul(arg, &p, 0);
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} else if (!strcmp(token, "location")) {
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journal_location_string = strdup(arg);
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} else if (strcmp(token, "v1_superblock") == 0) {
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journal_flags |= EXT2_MKJOURNAL_V1_SUPER;
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fputs(_("\nBad journal options specified.\n\n"
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"Journal options are separated by commas, "
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"and may take an argument which\n"
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"\tis set off by an equals ('=') sign.\n\n"
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"Valid journal options are:\n"
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"\tsize=<journal size in megabytes>\n"
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"\tdevice=<journal device>\n"
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"\tlocation=<journal location>\n\n"
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"The journal size must be between "
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"1024 and 10240000 filesystem blocks.\n\n"), stderr);
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* Determine the number of journal blocks to use, either via
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* user-specified # of megabytes, or via some intelligently selected
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* Find a reasonable journal file size (in blocks) given the number of blocks
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* in the filesystem. For very small filesystems, it is not reasonable to
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* have a journal that fills more than half of the filesystem.
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unsigned int figure_journal_size(int size, ext2_filsys fs)
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j_blocks = ext2fs_default_journal_size(ext2fs_blocks_count(fs->super));
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fputs(_("\nFilesystem too small for a journal\n"), stderr);
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j_blocks = size * 1024 / (fs->blocksize / 1024);
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if (j_blocks < 1024 || j_blocks > 10240000) {
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fprintf(stderr, _("\nThe requested journal "
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"size is %d blocks; it must be\n"
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"between 1024 and 10240000 blocks. "
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if ((unsigned) j_blocks > ext2fs_free_blocks_count(fs->super) / 2) {
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fputs(_("\nJournal size too big for filesystem.\n"),
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void print_check_message(int mnt, unsigned int check)
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printf(_("This filesystem will be automatically "
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"checked every %d mounts or\n"
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"%g days, whichever comes first. "
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"Use tune2fs -c or -i to override.\n"),
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mnt, ((double) check) / (3600 * 24));
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void dump_mmp_msg(struct mmp_struct *mmp, const char *msg)
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printf("MMP check failed: %s\n", msg);
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time_t t = mmp->mmp_time;
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printf("MMP error info: last update: %s node: %s device: %s\n",
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ctime(&t), mmp->mmp_nodename, mmp->mmp_bdevname);
added
removed
.pc/0001-mke2fs-use-ext2fs_open_file-in-check_plausibility.patch/misc/util.c
