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/*
* util.c --- helper functions used by tune2fs and mke2fs
*
* 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
* License.
* %End-Header%
*/
#include <stdio.h>
#include <string.h>
#ifdef HAVE_ERRNO_H
#include <errno.h>
#endif
#include <linux/ext2_fs.h>
#ifdef HAVE_LINUX_MAJOR_H
#include <linux/major.h>
#include <sys/stat.h>
#endif
#include "et/com_err.h"
#include "e2p/e2p.h"
#include "ext2fs/ext2fs.h"
#include "nls-enable.h"
#include "util.h"
#ifndef HAVE_STRCASECMP
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
void proceed_question(void)
{
char buf[256];
const char *short_yes = _("yY");
fflush(stdout);
fflush(stderr);
printf(_("Proceed anyway? (y,n) "));
buf[0] = 0;
fgets(buf, sizeof(buf), stdin);
if (strchr(short_yes, buf[0]) == 0)
exit(1);
}
void check_plausibility(const char *device)
{
int val;
struct stat s;
val = stat(device, &s);
if(val == -1) {
fprintf(stderr, _("Could not stat %s --- %s\n"),
device, error_message(errno));
if (errno == ENOENT)
fprintf(stderr, _("\nThe device apparently does "
"not exist; did you specify it correctly?\n"));
exit(1);
}
if (!S_ISBLK(s.st_mode)) {
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
#define SCSI_BLK_MAJOR(M) ((M) == SCSI_DISK_MAJOR || (M) == SCSI_CDROM_MAJOR)
#endif
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
}
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))
return;
fprintf(stderr, _("%s is mounted; "), device);
if (force) {
fprintf(stderr, _("mke2fs forced anyway. "
"Hope /etc/mtab is incorrect.\n"));
} else {
fprintf(stderr, _("will not make a %s here!\n"), type);
exit(1);
}
}
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) {
fprintf(stderr, _("Couldn't allocate memory to parse "
"journal options!\n"));
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) {
if (!arg) {
journal_usage++;
continue;
}
journal_device = arg;
} else if (strcmp(token, "size") == 0) {
if (!arg) {
journal_usage++;
continue;
}
journal_size = strtoul(arg, &p, 0);
journal_size_check:
if (*p || (journal_size < 4 || journal_size > 100)) {
fprintf(stderr,
_("Invalid journal size parameter - %s.\n"),
arg);
journal_usage++;
continue;
}
} else if (strcmp(token, "v1_superblock") == 0) {
journal_flags |= EXT2_MKJOURNAL_V1_SUPER;
continue;
} else {
journal_size = strtoul(token, &p, 0);
if (*p)
journal_usage++;
else
goto journal_size_check;
}
}
if (journal_usage) {
fprintf(stderr, _("\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 raid options are:\n"
"\tsize=<journal size in megabytes>\n"
"\tdevice=<journal device>\n\n"
"Journal size must be between "
"4 and 100 megabytes.\n\n" ));
exit(1);
}
}
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