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https://git.kernel.org/pub/scm/fs/ext2/e2fsprogs.git
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d49db19e0d
Make the smallest journal be 1400 blocks instead of 1024 blocks to make sure there is enough room to support on-line resizing. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
301 lines
6.9 KiB
C
301 lines
6.9 KiB
C
/*
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* util.c --- helper functions used by tune2fs and mke2fs
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*
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* Copyright 1995, 1996, 1997, 1998, 1999, 2000 by Theodore Ts'o.
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*
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* %Begin-Header%
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* This file may be redistributed under the terms of the GNU Public
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* License.
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* %End-Header%
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*/
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#define _LARGEFILE_SOURCE
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#define _LARGEFILE64_SOURCE
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#include <stdio.h>
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#include <string.h>
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#ifdef HAVE_ERRNO_H
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#include <errno.h>
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#endif
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#ifdef HAVE_LINUX_MAJOR_H
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#include <linux/major.h>
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#endif
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#ifdef HAVE_SYS_STAT_H
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#include <sys/stat.h>
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#endif
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#include "et/com_err.h"
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#include "e2p/e2p.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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#include "util.h"
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#ifndef HAVE_STRCASECMP
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int strcasecmp (char *s1, char *s2)
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{
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while (*s1 && *s2) {
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int ch1 = *s1++, ch2 = *s2++;
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if (isupper (ch1))
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ch1 = tolower (ch1);
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if (isupper (ch2))
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ch2 = tolower (ch2);
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if (ch1 != ch2)
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return ch1 - ch2;
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}
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return *s1 ? 1 : *s2 ? -1 : 0;
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}
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#endif
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/*
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* Given argv[0], return the program name.
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*/
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char *get_progname(char *argv_zero)
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{
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char *cp;
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cp = strrchr(argv_zero, '/');
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if (!cp )
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return argv_zero;
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else
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return cp+1;
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}
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void proceed_question(void)
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{
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char buf[256];
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const char *short_yes = _("yY");
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fflush(stdout);
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fflush(stderr);
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fputs(_("Proceed anyway? (y,n) "), stdout);
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buf[0] = 0;
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fgets(buf, sizeof(buf), stdin);
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if (strchr(short_yes, buf[0]) == 0)
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exit(1);
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}
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void check_plausibility(const char *device)
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{
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int val;
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#ifdef HAVE_OPEN64
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struct stat64 s;
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val = stat64(device, &s);
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#else
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struct stat s;
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val = stat(device, &s);
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#endif
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if(val == -1) {
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fprintf(stderr, _("Could not stat %s --- %s\n"),
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device, error_message(errno));
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if (errno == ENOENT)
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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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exit(1);
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}
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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_ISBLK(s.st_mode) && !S_ISCHR(s.st_mode))
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#else
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if (!S_ISBLK(s.st_mode))
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#endif
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{
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printf(_("%s is not a block special device.\n"), device);
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proceed_question();
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return;
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}
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#ifdef HAVE_LINUX_MAJOR_H
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#ifndef MAJOR
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#define MAJOR(dev) ((dev)>>8)
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#define MINOR(dev) ((dev) & 0xff)
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#endif
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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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#else
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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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#else
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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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device);
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proceed_question();
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}
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#endif
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}
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void check_mount(const char *device, int force, const char *type)
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{
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errcode_t retval;
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int mount_flags;
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retval = ext2fs_check_if_mounted(device, &mount_flags);
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if (retval) {
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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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device);
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return;
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}
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if (mount_flags & EXT2_MF_MOUNTED) {
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fprintf(stderr, _("%s is mounted; "), device);
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if (force > 2) {
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fputs(_("mke2fs forced anyway. Hope /etc/mtab is "
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"incorrect.\n"), stderr);
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return;
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}
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abort_mke2fs:
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fprintf(stderr, _("will not make a %s here!\n"), type);
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exit(1);
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}
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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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device);
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if (force > 2) {
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fputs(_("mke2fs forced anyway.\n"), stderr);
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return;
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}
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goto abort_mke2fs;
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}
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}
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void parse_journal_opts(const char *opts)
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{
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char *buf, *token, *next, *p, *arg;
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int len;
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int journal_usage = 0;
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len = strlen(opts);
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buf = malloc(len+1);
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if (!buf) {
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fputs(_("Couldn't allocate memory to parse journal "
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"options!\n"), stderr);
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exit(1);
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}
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strcpy(buf, opts);
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for (token = buf; token && *token; token = next) {
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p = strchr(token, ',');
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next = 0;
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if (p) {
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*p = 0;
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next = p+1;
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}
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arg = strchr(token, '=');
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if (arg) {
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*arg = 0;
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arg++;
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}
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#if 0
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printf("Journal option=%s, argument=%s\n", token,
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arg ? arg : "NONE");
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#endif
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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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journal_usage++;
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continue;
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}
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} else if (strcmp(token, "size") == 0) {
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if (!arg) {
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journal_usage++;
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continue;
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}
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journal_size = strtoul(arg, &p, 0);
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if (*p)
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journal_usage++;
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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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continue;
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} else
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journal_usage++;
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}
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if (journal_usage) {
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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\n"
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"The journal size must be between "
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"1024 and 102400 filesystem blocks.\n\n"), stderr);
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exit(1);
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}
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}
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/*
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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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* defaults.
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*
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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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*/
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int figure_journal_size(int size, ext2_filsys fs)
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{
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blk_t j_blocks;
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if (fs->super->s_blocks_count < 2048) {
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fputs(_("\nFilesystem too small for a journal\n"), stderr);
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return 0;
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}
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if (size > 0) {
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j_blocks = size * 1024 / (fs->blocksize / 1024);
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if (j_blocks < 1024 || j_blocks > 102400) {
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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 102400 blocks. "
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"Aborting.\n"),
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j_blocks);
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exit(1);
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}
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if (j_blocks > fs->super->s_free_blocks_count) {
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fputs(_("\nJournal size too big for filesystem.\n"),
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stderr);
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exit(1);
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}
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return j_blocks;
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}
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if (fs->super->s_blocks_count < 32768)
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j_blocks = 1400;
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else if (fs->super->s_blocks_count < 256*1024)
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j_blocks = 4096;
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else if (fs->super->s_blocks_count < 512*1024)
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j_blocks = 8192;
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else if (fs->super->s_blocks_count < 1024*1024)
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j_blocks = 16384;
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else
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j_blocks = 32768;
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return j_blocks;
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}
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void print_check_message(ext2_filsys fs)
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{
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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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fs->super->s_max_mnt_count,
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(double)fs->super->s_checkinterval / (3600 * 24));
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}
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