2 * util.c --- helper functions used by tune2fs and mke2fs
4 * Copyright 1995, 1996, 1997, 1998, 1999, 2000 by Theodore Ts'o.
7 * This file may be redistributed under the terms of the GNU Public
12 #define _LARGEFILE_SOURCE
13 #define _LARGEFILE64_SOURCE
20 #ifdef HAVE_LINUX_MAJOR_H
21 #include <linux/major.h>
23 #ifdef HAVE_SYS_STAT_H
27 #include "et/com_err.h"
29 #include "ext2fs/ext2_fs.h"
30 #include "ext2fs/ext2fs.h"
31 #include "nls-enable.h"
32 #include "blkid/blkid.h"
35 #ifndef HAVE_STRCASECMP
36 int strcasecmp (char *s1, char *s2)
39 int ch1 = *s1++, ch2 = *s2++;
47 return *s1 ? 1 : *s2 ? -1 : 0;
52 * Given argv[0], return the program name.
54 char *get_progname(char *argv_zero)
58 cp = strrchr(argv_zero, '/');
65 void proceed_question(void)
68 const char *short_yes = _("yY");
72 fputs(_("Proceed anyway? (y,n) "), stdout);
74 if (!fgets(buf, sizeof(buf), stdin) ||
75 strchr(short_yes, buf[0]) == 0)
79 void check_plausibility(const char *device)
85 val = stat64(device, &s);
89 val = stat(device, &s);
93 fprintf(stderr, _("Could not stat %s --- %s\n"),
94 device, error_message(errno));
96 fputs(_("\nThe device apparently does not exist; "
97 "did you specify it correctly?\n"), stderr);
100 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
101 /* On FreeBSD, all disk devices are character specials */
102 if (!S_ISBLK(s.st_mode) && !S_ISCHR(s.st_mode))
104 if (!S_ISBLK(s.st_mode))
107 printf(_("%s is not a block special device.\n"), device);
112 #ifdef HAVE_LINUX_MAJOR_H
114 #define MAJOR(dev) ((dev)>>8)
115 #define MINOR(dev) ((dev) & 0xff)
117 #ifndef SCSI_BLK_MAJOR
118 #ifdef SCSI_DISK0_MAJOR
119 #ifdef SCSI_DISK8_MAJOR
120 #define SCSI_DISK_MAJOR(M) ((M) == SCSI_DISK0_MAJOR || \
121 ((M) >= SCSI_DISK1_MAJOR && (M) <= SCSI_DISK7_MAJOR) || \
122 ((M) >= SCSI_DISK8_MAJOR && (M) <= SCSI_DISK15_MAJOR))
124 #define SCSI_DISK_MAJOR(M) ((M) == SCSI_DISK0_MAJOR || \
125 ((M) >= SCSI_DISK1_MAJOR && (M) <= SCSI_DISK7_MAJOR))
126 #endif /* defined(SCSI_DISK8_MAJOR) */
127 #define SCSI_BLK_MAJOR(M) (SCSI_DISK_MAJOR((M)) || (M) == SCSI_CDROM_MAJOR)
129 #define SCSI_BLK_MAJOR(M) ((M) == SCSI_DISK_MAJOR || (M) == SCSI_CDROM_MAJOR)
130 #endif /* defined(SCSI_DISK0_MAJOR) */
131 #endif /* defined(SCSI_BLK_MAJOR) */
132 if (((MAJOR(s.st_rdev) == HD_MAJOR &&
133 MINOR(s.st_rdev)%64 == 0) ||
134 (SCSI_BLK_MAJOR(MAJOR(s.st_rdev)) &&
135 MINOR(s.st_rdev)%16 == 0))) {
136 printf(_("%s is entire device, not just one partition!\n"),
143 void check_mount(const char *device, int force, const char *type)
148 retval = ext2fs_check_if_mounted(device, &mount_flags);
150 com_err("ext2fs_check_if_mount", retval,
151 _("while determining whether %s is mounted."),
155 if (mount_flags & EXT2_MF_MOUNTED) {
156 fprintf(stderr, _("%s is mounted; "), device);
158 fputs(_("mke2fs forced anyway. Hope /etc/mtab is "
159 "incorrect.\n"), stderr);
163 fprintf(stderr, _("will not make a %s here!\n"), type);
166 if (mount_flags & EXT2_MF_BUSY) {
167 fprintf(stderr, _("%s is apparently in use by the system; "),
170 fputs(_("mke2fs forced anyway.\n"), stderr);
177 void parse_journal_opts(const char *opts)
179 char *buf, *token, *next, *p, *arg;
181 int journal_usage = 0;
186 fputs(_("Couldn't allocate memory to parse journal "
187 "options!\n"), stderr);
191 for (token = buf; token && *token; token = next) {
192 p = strchr(token, ',');
198 arg = strchr(token, '=');
204 printf("Journal option=%s, argument=%s\n", token,
207 if (strcmp(token, "device") == 0) {
208 journal_device = blkid_get_devname(NULL, arg, NULL);
209 if (!journal_device) {
213 } else if (strcmp(token, "size") == 0) {
218 journal_size = strtoul(arg, &p, 0);
221 } else if (strcmp(token, "v1_superblock") == 0) {
222 journal_flags |= EXT2_MKJOURNAL_V1_SUPER;
228 fputs(_("\nBad journal options specified.\n\n"
229 "Journal options are separated by commas, "
230 "and may take an argument which\n"
231 "\tis set off by an equals ('=') sign.\n\n"
232 "Valid journal options are:\n"
233 "\tsize=<journal size in megabytes>\n"
234 "\tdevice=<journal device>\n\n"
235 "The journal size must be between "
236 "1024 and 102400 filesystem blocks.\n\n"), stderr);
244 * Determine the number of journal blocks to use, either via
245 * user-specified # of megabytes, or via some intelligently selected
248 * Find a reasonable journal file size (in blocks) given the number of blocks
249 * in the filesystem. For very small filesystems, it is not reasonable to
250 * have a journal that fills more than half of the filesystem.
252 unsigned int figure_journal_size(int size, ext2_filsys fs)
256 j_blocks = ext2fs_default_journal_size(fs->super->s_blocks_count);
258 fputs(_("\nFilesystem too small for a journal\n"), stderr);
263 j_blocks = size * 1024 / (fs->blocksize / 1024);
264 if (j_blocks < 1024 || j_blocks > 10240000) {
265 fprintf(stderr, _("\nThe requested journal "
266 "size is %d blocks; it must be\n"
267 "between 1024 and 10240000 blocks. "
272 if ((unsigned) j_blocks > fs->super->s_free_blocks_count / 2) {
273 fputs(_("\nJournal size too big for filesystem.\n"),
281 void print_check_message(ext2_filsys fs)
283 printf(_("This filesystem will be automatically "
284 "checked every %d mounts or\n"
285 "%g days, whichever comes first. "
286 "Use tune2fs -c or -i to override.\n"),
287 fs->super->s_max_mnt_count,
288 (double)fs->super->s_checkinterval / (3600 * 24));