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 fgets(buf, sizeof(buf), stdin);
75 if (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);
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))
158 fprintf(stderr, _("%s is mounted; "), device);
160 fputs(_("mke2fs forced anyway. Hope /etc/mtab is "
161 "incorrect.\n"), stderr);
163 fprintf(stderr, _("will not make a %s here!\n"), type);
168 void parse_journal_opts(const char *opts)
170 char *buf, *token, *next, *p, *arg;
172 int journal_usage = 0;
177 fputs(_("Couldn't allocate memory to parse journal "
178 "options!\n"), stderr);
182 for (token = buf; token && *token; token = next) {
183 p = strchr(token, ',');
189 arg = strchr(token, '=');
195 printf("Journal option=%s, argument=%s\n", token,
198 if (strcmp(token, "device") == 0) {
199 journal_device = blkid_get_devname(NULL, arg, NULL);
200 if (!journal_device) {
204 } else if (strcmp(token, "size") == 0) {
209 journal_size = strtoul(arg, &p, 0);
212 } else if (strcmp(token, "v1_superblock") == 0) {
213 journal_flags |= EXT2_MKJOURNAL_V1_SUPER;
219 fputs(_("\nBad journal options specified.\n\n"
220 "Journal options are separated by commas, "
221 "and may take an argument which\n"
222 "\tis set off by an equals ('=') sign.\n\n"
223 "Valid journal options are:\n"
224 "\tsize=<journal size in megabytes>\n"
225 "\tdevice=<journal device>\n\n"
226 "The journal size must be between "
227 "1024 and 102400 filesystem blocks.\n\n"), stderr);
233 * Determine the number of journal blocks to use, either via
234 * user-specified # of megabytes, or via some intelligently selected
237 * Find a reasonable journal file size (in blocks) given the number of blocks
238 * in the filesystem. For very small filesystems, it is not reasonable to
239 * have a journal that fills more than half of the filesystem.
241 int figure_journal_size(int size, ext2_filsys fs)
245 if (fs->super->s_blocks_count < 2048) {
246 fputs(_("\nFilesystem too small for a journal\n"), stderr);
251 j_blocks = size * 1024 / (fs->blocksize / 1024);
252 if (j_blocks < 1024 || j_blocks > 102400) {
253 fprintf(stderr, _("\nThe requested journal "
254 "size is %d blocks; it must be\n"
255 "between 1024 and 102400 blocks. "
260 if (j_blocks > fs->super->s_free_blocks_count) {
261 fputs(_("\nJournal size too big for filesystem.\n"),
268 if (fs->super->s_blocks_count < 32768)
270 else if (fs->super->s_blocks_count < 262144)
278 void print_check_message(ext2_filsys fs)
280 printf(_("This filesystem will be automatically "
281 "checked every %d mounts or\n"
282 "%g days, whichever comes first. "
283 "Use tune2fs -c or -i to override.\n"),
284 fs->super->s_max_mnt_count,
285 (double)fs->super->s_checkinterval / (3600 * 24));