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
28 #include "et/com_err.h"
30 #include "ext2fs/ext2_fs.h"
31 #include "ext2fs/ext2fs.h"
32 #include "nls-enable.h"
33 #include "blkid/blkid.h"
35 extern int journal_size;
36 extern int journal_flags;
37 extern char *journal_device;
39 #ifndef HAVE_STRCASECMP
40 int strcasecmp (char *s1, char *s2)
43 int ch1 = *s1++, ch2 = *s2++;
51 return *s1 ? 1 : *s2 ? -1 : 0;
56 * Given argv[0], return the program name.
58 static inline char *get_progname(char *argv_zero)
62 cp = strrchr(argv_zero, '/');
69 static inline void proceed_question(void)
72 const char *short_yes = _("yY");
76 fputs(_("Proceed anyway? (y,n) "), stdout);
78 if (!fgets(buf, sizeof(buf), stdin) ||
79 strchr(short_yes, buf[0]) == 0)
83 static inline void check_plausibility(const char *device)
88 val = ext2fs_stat(device, &s);
91 fprintf(stderr, _("Could not stat %s --- %s\n"),
92 device, error_message(errno));
94 fputs(_("\nThe device apparently does not exist; "
95 "did you specify it correctly?\n"), stderr);
98 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
99 /* On FreeBSD, all disk devices are character specials */
100 if (!S_ISBLK(s.st_mode) && !S_ISCHR(s.st_mode))
102 if (!S_ISBLK(s.st_mode))
105 printf(_("%s is not a block special device.\n"), device);
110 #ifdef HAVE_LINUX_MAJOR_H
112 #define MAJOR(dev) ((dev)>>8)
113 #define MINOR(dev) ((dev) & 0xff)
115 #ifndef SCSI_BLK_MAJOR
116 #ifdef SCSI_DISK0_MAJOR
117 #ifdef SCSI_DISK8_MAJOR
118 #define SCSI_DISK_MAJOR(M) ((M) == SCSI_DISK0_MAJOR || \
119 ((M) >= SCSI_DISK1_MAJOR && (M) <= SCSI_DISK7_MAJOR) || \
120 ((M) >= SCSI_DISK8_MAJOR && (M) <= SCSI_DISK15_MAJOR))
122 #define SCSI_DISK_MAJOR(M) ((M) == SCSI_DISK0_MAJOR || \
123 ((M) >= SCSI_DISK1_MAJOR && (M) <= SCSI_DISK7_MAJOR))
124 #endif /* defined(SCSI_DISK8_MAJOR) */
125 #define SCSI_BLK_MAJOR(M) (SCSI_DISK_MAJOR((M)) || (M) == SCSI_CDROM_MAJOR)
127 #define SCSI_BLK_MAJOR(M) ((M) == SCSI_DISK_MAJOR || (M) == SCSI_CDROM_MAJOR)
128 #endif /* defined(SCSI_DISK0_MAJOR) */
129 #endif /* defined(SCSI_BLK_MAJOR) */
130 if (((MAJOR(s.st_rdev) == HD_MAJOR &&
131 MINOR(s.st_rdev)%64 == 0) ||
132 (SCSI_BLK_MAJOR(MAJOR(s.st_rdev)) &&
133 MINOR(s.st_rdev)%16 == 0))) {
134 printf(_("%s is entire device, not just one partition!\n"),
141 static inline void check_mount(const char *device, int force, const char *type)
146 retval = ext2fs_check_if_mounted(device, &mount_flags);
148 com_err("ext2fs_check_if_mount", retval,
149 _("while determining whether %s is mounted."),
153 if (mount_flags & EXT2_MF_MOUNTED) {
154 fprintf(stderr, _("%s is mounted; "), device);
156 fputs(_("mke2fs forced anyway. Hope /etc/mtab is "
157 "incorrect.\n"), stderr);
161 fprintf(stderr, _("will not make a %s here!\n"), type);
164 if (mount_flags & EXT2_MF_BUSY) {
165 fprintf(stderr, _("%s is apparently in use by the system; "),
168 fputs(_("mke2fs forced anyway.\n"), stderr);
175 static inline void parse_journal_opts(const char *opts)
177 char *buf, *token, *next, *p, *arg;
179 int journal_usage = 0;
184 fputs(_("Couldn't allocate memory to parse journal "
185 "options!\n"), stderr);
189 for (token = buf; token && *token; token = next) {
190 p = strchr(token, ',');
196 arg = strchr(token, '=');
202 printf("Journal option=%s, argument=%s\n", token,
205 if (strcmp(token, "device") == 0) {
206 journal_device = blkid_get_devname(NULL, arg, NULL);
207 if (!journal_device) {
209 fprintf(stderr, _("\nCould not find "
210 "journal device matching %s\n"),
215 } else if (strcmp(token, "size") == 0) {
220 journal_size = strtoul(arg, &p, 0);
223 } else if (strcmp(token, "v1_superblock") == 0) {
224 journal_flags |= EXT2_MKJOURNAL_V1_SUPER;
230 fputs(_("\nBad journal options specified.\n\n"
231 "Journal options are separated by commas, "
232 "and may take an argument which\n"
233 "\tis set off by an equals ('=') sign.\n\n"
234 "Valid journal options are:\n"
235 "\tsize=<journal size in megabytes>\n"
236 "\tdevice=<journal device>\n\n"
237 "The journal size must be between "
238 "1024 and 10240000 filesystem blocks.\n\n"), stderr);
246 * Determine the number of journal blocks to use, either via
247 * user-specified # of megabytes, or via some intelligently selected
250 * Find a reasonable journal file size (in blocks) given the number of blocks
251 * in the filesystem. For very small filesystems, it is not reasonable to
252 * have a journal that fills more than half of the filesystem.
254 static inline unsigned int figure_journal_size(int size, ext2_filsys fs)
258 j_blocks = ext2fs_default_journal_size(ext2fs_blocks_count(fs->super));
260 fputs(_("\nFilesystem too small for a journal\n"), stderr);
265 j_blocks = size * 1024 / (fs->blocksize / 1024);
266 if (j_blocks < 1024 || j_blocks > 10240000) {
267 fprintf(stderr, _("\nThe requested journal "
268 "size is %d blocks; it must be\n"
269 "between 1024 and 10240000 blocks. "
274 if ((unsigned) j_blocks > ext2fs_free_blocks_count(fs->super) / 2) {
275 fputs(_("\nJournal size too big for filesystem.\n"),
283 static inline void print_check_message(int mnt, unsigned int check)
289 printf(_("This filesystem will be automatically "
290 "checked every %d mounts or\n"
291 "%g days, whichever comes first. "
292 "Use tune2fs -c or -i to override.\n"),
293 mnt, ((double) check) / (3600 * 24));
296 static inline void dump_mmp_msg(struct mmp_struct *mmp, const char *msg)
300 printf("MMP check failed: %s\n", msg);
302 time_t t = mmp->mmp_time;
304 printf("MMP error info: last update: %s node: %s device: %s\n",
305 ctime(&t), mmp->mmp_nodename, mmp->mmp_bdevname);