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-rw-r--r--misc/util.h312
1 files changed, 296 insertions, 16 deletions
diff --git a/misc/util.h b/misc/util.h
index f872c38c..bee52124 100644
--- a/misc/util.h
+++ b/misc/util.h
@@ -1,8 +1,7 @@
/*
- * util.h --- header file defining prototypes for helper functions
- * used by tune2fs and mke2fs
+ * util.c --- helper functions used by tune2fs and mke2fs
*
- * Copyright 2000 by Theodore Ts'o.
+ * Copyright 1995, 1996, 1997, 1998, 1999, 2000 by Theodore Ts'o.
*
* %Begin-Header%
* This file may be redistributed under the terms of the GNU Public
@@ -10,18 +9,299 @@
* %End-Header%
*/
-extern int journal_size;
-extern int journal_flags;
-extern char *journal_device;
+#define _LARGEFILE_SOURCE
+#define _LARGEFILE64_SOURCE
+
+#include <stdio.h>
+#include <string.h>
+#ifdef HAVE_ERRNO_H
+#include <errno.h>
+#endif
+#ifdef HAVE_LINUX_MAJOR_H
+#include <linux/major.h>
+#endif
+#ifdef HAVE_SYS_STAT_H
+#include <sys/stat.h>
+#endif
+#include <time.h>
+
+#include "et/com_err.h"
+#include "e2p/e2p.h"
+#include "ext2fs/ext2_fs.h"
+#include "ext2fs/ext2fs.h"
+#include "nls-enable.h"
+#include "blkid/blkid.h"
+
+extern int journal_size;
+extern int journal_flags;
+extern char *journal_device;
#ifndef HAVE_STRCASECMP
-extern int strcasecmp (char *s1, char *s2);
-#endif
-extern char *get_progname(char *argv_zero);
-extern void proceed_question(void);
-extern void check_plausibility(const char *device);
-extern void parse_journal_opts(const char *opts);
-extern void check_mount(const char *device, int force, const char *type);
-extern unsigned int figure_journal_size(int size, ext2_filsys fs);
-extern void print_check_message(int, unsigned int);
-extern void dump_mmp_msg(struct mmp_struct *mmp, const char *msg);
+int strcasecmp (char *s1, char *s2)
+{
+ while (*s1 && *s2) {
+ int ch1 = *s1++, ch2 = *s2++;
+ if (isupper (ch1))
+ ch1 = tolower (ch1);
+ if (isupper (ch2))
+ ch2 = tolower (ch2);
+ if (ch1 != ch2)
+ return ch1 - ch2;
+ }
+ return *s1 ? 1 : *s2 ? -1 : 0;
+}
+#endif
+
+/*
+ * Given argv[0], return the program name.
+ */
+static inline char *get_progname(char *argv_zero)
+{
+ char *cp;
+
+ cp = strrchr(argv_zero, '/');
+ if (!cp )
+ return argv_zero;
+ else
+ return cp+1;
+}
+
+static inline void proceed_question(void)
+{
+ char buf[256];
+ const char *short_yes = _("yY");
+
+ fflush(stdout);
+ fflush(stderr);
+ fputs(_("Proceed anyway? (y,n) "), stdout);
+ buf[0] = 0;
+ if (!fgets(buf, sizeof(buf), stdin) ||
+ strchr(short_yes, buf[0]) == 0)
+ exit(1);
+}
+
+static inline void check_plausibility(const char *device)
+{
+ int val;
+ ext2fs_struct_stat s;
+
+ val = ext2fs_stat(device, &s);
+
+ if(val == -1) {
+ fprintf(stderr, _("Could not stat %s --- %s\n"),
+ device, error_message(errno));
+ if (errno == ENOENT)
+ fputs(_("\nThe device apparently does not exist; "
+ "did you specify it correctly?\n"), stderr);
+ exit(1);
+ }
+#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
+ /* On FreeBSD, all disk devices are character specials */
+ if (!S_ISBLK(s.st_mode) && !S_ISCHR(s.st_mode))
+#else
+ if (!S_ISBLK(s.st_mode))
+#endif
+ {
+ printf(_("%s is not a block special device.\n"), device);
+ proceed_question();
+ return;
+ }
+
+#ifdef HAVE_LINUX_MAJOR_H
+#ifndef MAJOR
+#define MAJOR(dev) ((dev)>>8)
+#define MINOR(dev) ((dev) & 0xff)
+#endif
+#ifndef SCSI_BLK_MAJOR
+#ifdef SCSI_DISK0_MAJOR
+#ifdef SCSI_DISK8_MAJOR
+#define SCSI_DISK_MAJOR(M) ((M) == SCSI_DISK0_MAJOR || \
+ ((M) >= SCSI_DISK1_MAJOR && (M) <= SCSI_DISK7_MAJOR) || \
+ ((M) >= SCSI_DISK8_MAJOR && (M) <= SCSI_DISK15_MAJOR))
+#else
+#define SCSI_DISK_MAJOR(M) ((M) == SCSI_DISK0_MAJOR || \
+ ((M) >= SCSI_DISK1_MAJOR && (M) <= SCSI_DISK7_MAJOR))
+#endif /* defined(SCSI_DISK8_MAJOR) */
+#define SCSI_BLK_MAJOR(M) (SCSI_DISK_MAJOR((M)) || (M) == SCSI_CDROM_MAJOR)
+#else
+#define SCSI_BLK_MAJOR(M) ((M) == SCSI_DISK_MAJOR || (M) == SCSI_CDROM_MAJOR)
+#endif /* defined(SCSI_DISK0_MAJOR) */
+#endif /* defined(SCSI_BLK_MAJOR) */
+ if (((MAJOR(s.st_rdev) == HD_MAJOR &&
+ MINOR(s.st_rdev)%64 == 0) ||
+ (SCSI_BLK_MAJOR(MAJOR(s.st_rdev)) &&
+ MINOR(s.st_rdev)%16 == 0))) {
+ printf(_("%s is entire device, not just one partition!\n"),
+ device);
+ proceed_question();
+ }
+#endif
+}
+
+static inline void check_mount(const char *device, int force, const char *type)
+{
+ errcode_t retval;
+ int mount_flags;
+
+ retval = ext2fs_check_if_mounted(device, &mount_flags);
+ if (retval) {
+ com_err("ext2fs_check_if_mount", retval,
+ _("while determining whether %s is mounted."),
+ device);
+ return;
+ }
+ if (mount_flags & EXT2_MF_MOUNTED) {
+ fprintf(stderr, _("%s is mounted; "), device);
+ if (force >= 2) {
+ fputs(_("mke2fs forced anyway. Hope /etc/mtab is "
+ "incorrect.\n"), stderr);
+ return;
+ }
+ abort_mke2fs:
+ fprintf(stderr, _("will not make a %s here!\n"), type);
+ exit(1);
+ }
+ if (mount_flags & EXT2_MF_BUSY) {
+ fprintf(stderr, _("%s is apparently in use by the system; "),
+ device);
+ if (force >= 2) {
+ fputs(_("mke2fs forced anyway.\n"), stderr);
+ return;
+ }
+ goto abort_mke2fs;
+ }
+}
+
+static inline void parse_journal_opts(const char *opts)
+{
+ char *buf, *token, *next, *p, *arg;
+ int len;
+ int journal_usage = 0;
+
+ len = strlen(opts);
+ buf = malloc(len+1);
+ if (!buf) {
+ fputs(_("Couldn't allocate memory to parse journal "
+ "options!\n"), stderr);
+ exit(1);
+ }
+ strcpy(buf, opts);
+ for (token = buf; token && *token; token = next) {
+ p = strchr(token, ',');
+ next = 0;
+ if (p) {
+ *p = 0;
+ next = p+1;
+ }
+ arg = strchr(token, '=');
+ if (arg) {
+ *arg = 0;
+ arg++;
+ }
+#if 0
+ printf("Journal option=%s, argument=%s\n", token,
+ arg ? arg : "NONE");
+#endif
+ if (strcmp(token, "device") == 0) {
+ journal_device = blkid_get_devname(NULL, arg, NULL);
+ if (!journal_device) {
+ if (arg)
+ fprintf(stderr, _("\nCould not find "
+ "journal device matching %s\n"),
+ arg);
+ journal_usage++;
+ continue;
+ }
+ } else if (strcmp(token, "size") == 0) {
+ if (!arg) {
+ journal_usage++;
+ continue;
+ }
+ journal_size = strtoul(arg, &p, 0);
+ if (*p)
+ journal_usage++;
+ } else if (strcmp(token, "v1_superblock") == 0) {
+ journal_flags |= EXT2_MKJOURNAL_V1_SUPER;
+ continue;
+ } else
+ journal_usage++;
+ }
+ if (journal_usage) {
+ fputs(_("\nBad journal options specified.\n\n"
+ "Journal options are separated by commas, "
+ "and may take an argument which\n"
+ "\tis set off by an equals ('=') sign.\n\n"
+ "Valid journal options are:\n"
+ "\tsize=<journal size in megabytes>\n"
+ "\tdevice=<journal device>\n\n"
+ "The journal size must be between "
+ "1024 and 10240000 filesystem blocks.\n\n"), stderr);
+ free(buf);
+ exit(1);
+ }
+ free(buf);
+}
+
+/*
+ * Determine the number of journal blocks to use, either via
+ * user-specified # of megabytes, or via some intelligently selected
+ * defaults.
+ *
+ * Find a reasonable journal file size (in blocks) given the number of blocks
+ * in the filesystem. For very small filesystems, it is not reasonable to
+ * have a journal that fills more than half of the filesystem.
+ */
+static inline unsigned int figure_journal_size(int size, ext2_filsys fs)
+{
+ int j_blocks;
+
+ j_blocks = ext2fs_default_journal_size(ext2fs_blocks_count(fs->super));
+ if (j_blocks < 0) {
+ fputs(_("\nFilesystem too small for a journal\n"), stderr);
+ return 0;
+ }
+
+ if (size > 0) {
+ j_blocks = size * 1024 / (fs->blocksize / 1024);
+ if (j_blocks < 1024 || j_blocks > 10240000) {
+ fprintf(stderr, _("\nThe requested journal "
+ "size is %d blocks; it must be\n"
+ "between 1024 and 10240000 blocks. "
+ "Aborting.\n"),
+ j_blocks);
+ exit(1);
+ }
+ if ((unsigned) j_blocks > ext2fs_free_blocks_count(fs->super) / 2) {
+ fputs(_("\nJournal size too big for filesystem.\n"),
+ stderr);
+ exit(1);
+ }
+ }
+ return j_blocks;
+}
+
+static inline void print_check_message(int mnt, unsigned int check)
+{
+ if (mnt < 0)
+ mnt = 0;
+ if (!mnt && !check)
+ return;
+ printf(_("This filesystem will be automatically "
+ "checked every %d mounts or\n"
+ "%g days, whichever comes first. "
+ "Use tune2fs -c or -i to override.\n"),
+ mnt, ((double) check) / (3600 * 24));
+}
+
+static inline void dump_mmp_msg(struct mmp_struct *mmp, const char *msg)
+{
+
+ if (msg)
+ printf("MMP check failed: %s\n", msg);
+ if (mmp) {
+ time_t t = mmp->mmp_time;
+
+ printf("MMP error info: last update: %s node: %s device: %s\n",
+ ctime(&t), mmp->mmp_nodename, mmp->mmp_bdevname);
+ }
+}
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