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 #ifndef _LARGEFILE_SOURCE
13 #define _LARGEFILE_SOURCE
15 #ifndef _LARGEFILE64_SOURCE
16 #define _LARGEFILE64_SOURCE
21 #define __USE_MINGW_ALARM
36 #ifdef HAVE_LINUX_MAJOR_H
37 #include <linux/major.h>
39 #include <sys/types.h>
40 #ifdef HAVE_SYS_STAT_H
48 #include "et/com_err.h"
50 #include "ext2fs/ext2_fs.h"
51 #include "ext2fs/ext2fs.h"
52 #include "support/nls-enable.h"
53 #include "support/devname.h"
54 #include "blkid/blkid.h"
57 char *journal_location_string = NULL;
59 #ifndef HAVE_STRCASECMP
60 int strcasecmp (char *s1, char *s2)
63 int ch1 = *s1++, ch2 = *s2++;
71 return *s1 ? 1 : *s2 ? -1 : 0;
76 * Given argv[0], return the program name.
78 char *get_progname(char *argv_zero)
82 cp = strrchr(argv_zero, '/');
89 static jmp_buf alarm_env;
91 static void alarm_signal(int signal EXT2FS_ATTR((unused)))
93 longjmp(alarm_env, 1);
96 void proceed_question(int delay)
99 const char *short_yes = _("yY");
100 const char *english_yes = "yY";
105 if (setjmp(alarm_env)) {
106 signal(SIGALRM, SIG_IGN);
107 printf("%s", _("<proceeding>\n"));
110 signal(SIGALRM, alarm_signal);
111 printf(_("Proceed anyway (or wait %d seconds to proceed) ? (y,N) "),
115 fputs(_("Proceed anyway? (y,N) "), stdout);
117 if (!fgets(buf, sizeof(buf), stdin) ||
118 strchr(_("nN"), buf[0]) ||
119 !(strchr(short_yes, buf[0]) ||
120 strchr(english_yes, buf[0]))) {
124 signal(SIGALRM, SIG_IGN);
127 void check_mount(const char *device, int force, const char *type)
132 retval = ext2fs_check_if_mounted(device, &mount_flags);
134 com_err("ext2fs_check_if_mount", retval,
135 _("while determining whether %s is mounted."),
139 if (mount_flags & EXT2_MF_MOUNTED) {
140 fprintf(stderr, _("%s is mounted; "), device);
142 fputs(_("mke2fs forced anyway. Hope /etc/mtab is "
143 "incorrect.\n"), stderr);
147 fprintf(stderr, _("will not make a %s here!\n"), type);
150 if (mount_flags & EXT2_MF_BUSY) {
151 fprintf(stderr, _("%s is apparently in use by the system; "),
154 fputs(_("mke2fs forced anyway.\n"), stderr);
161 void parse_journal_opts(const char *opts)
163 char *buf, *token, *next, *p, *arg;
165 int journal_usage = 0;
170 fputs(_("Couldn't allocate memory to parse journal "
171 "options!\n"), stderr);
175 for (token = buf; token && *token; token = next) {
176 p = strchr(token, ',');
182 arg = strchr(token, '=');
188 printf("Journal option=%s, argument=%s\n", token,
191 if (strcmp(token, "device") == 0) {
192 journal_device = get_devname(NULL, arg, NULL);
193 if (!journal_device) {
195 fprintf(stderr, _("\nCould not find "
196 "journal device matching %s\n"),
201 } else if (strcmp(token, "size") == 0) {
206 journal_size = strtoul(arg, &p, 0);
209 } else if (strcmp(token, "fast_commit_size") == 0) {
214 journal_fc_size = strtoul(arg, &p, 0);
217 } else if (!strcmp(token, "location")) {
222 journal_location_string = strdup(arg);
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"
237 "\tlocation=<journal location>\n\n"
238 "The journal size must be between "
239 "1024 and 10240000 filesystem blocks.\n\n"), stderr);
246 static inline int jsize_to_blks(ext2_filsys fs, int size)
248 return (size * 1024) / (fs->blocksize / 1024);
251 /* Fast commit size is in KBs */
252 static inline int fcsize_to_blks(ext2_filsys fs, int size)
254 return (size * 1024) / (fs->blocksize);
258 * Determine the number of journal blocks to use, either via
259 * user-specified # of megabytes, or via some intelligently selected
262 * Find a reasonable journal file size (in blocks) given the number of blocks in
263 * the filesystem. For very small filesystems, it is not reasonable to have a
264 * journal that fills more than half of the filesystem.
266 void figure_journal_size(struct ext2fs_journal_params *jparams,
267 int requested_j_size, int requested_fc_size, ext2_filsys fs)
269 int total_blocks, ret;
271 ret = ext2fs_get_journal_params(jparams, fs);
273 fputs(_("\nFilesystem too small for a journal\n"), stderr);
277 if (requested_j_size > 0 ||
278 (ext2fs_has_feature_fast_commit(fs->super) && requested_fc_size > 0)) {
279 if (requested_j_size > 0)
280 jparams->num_journal_blocks =
281 jsize_to_blks(fs, requested_j_size);
282 if (ext2fs_has_feature_fast_commit(fs->super) &&
283 requested_fc_size > 0)
284 jparams->num_fc_blocks =
285 fcsize_to_blks(fs, requested_fc_size);
286 else if (!ext2fs_has_feature_fast_commit(fs->super))
287 jparams->num_fc_blocks = 0;
288 total_blocks = jparams->num_journal_blocks + jparams->num_fc_blocks;
289 if (total_blocks < 1024 || total_blocks > 10240000) {
290 fprintf(stderr, _("\nThe total requested journal "
291 "size is %d blocks; it must be\n"
292 "between 1024 and 10240000 blocks. "
297 if ((unsigned int) total_blocks > ext2fs_free_blocks_count(fs->super) / 2) {
298 fputs(_("\nTotal journal size too big for filesystem.\n"),
305 void print_check_message(int mnt, unsigned int check)
311 printf(_("This filesystem will be automatically "
312 "checked every %d mounts or\n"
313 "%g days, whichever comes first. "
314 "Use tune2fs -c or -i to override.\n"),
315 mnt, ((double) check) / (3600 * 24));
318 void dump_mmp_msg(struct mmp_struct *mmp, const char *msg)
322 printf("MMP check failed: %s\n", msg);
324 time_t t = mmp->mmp_time;
326 printf("MMP error info: node: %.*s, device: %.*s, updated: %s",
327 EXT2_LEN_STR(mmp->mmp_nodename),
328 EXT2_LEN_STR(mmp->mmp_bdevname), ctime(&t));