/* vi: set sw=4 ts=4: */
+/*
+ * Utility routines.
+ *
+ * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <mntent.h>
#include "libbb.h"
-extern const char mtab_file[]; /* Defined in utility.c */
-static const int MS_RDONLY = 1; /* Mount read-only. */
+#define MTAB_MAX_ENTRIES 40
+#ifdef CONFIG_FEATURE_MTAB_SUPPORT
void erase_mtab(const char *name)
{
- struct mntent entries[20];
+ struct mntent entries[MTAB_MAX_ENTRIES];
int count = 0;
- FILE *mountTable = setmntent(mtab_file, "r");
+ FILE *mountTable = setmntent(bb_path_mtab_file, "r");
struct mntent *m;
/* Check if reading the mtab file failed */
if (mountTable == 0
/* Bummer. fall back on trying the /proc filesystem */
&& (mountTable = setmntent("/proc/mounts", "r")) == 0) {
- perror_msg("%s", mtab_file);
+ bb_perror_msg(bb_path_mtab_file);
return;
}
- while ((m = getmntent(mountTable)) != 0) {
+ while (((m = getmntent(mountTable)) != 0) && (count < MTAB_MAX_ENTRIES))
+ {
entries[count].mnt_fsname = strdup(m->mnt_fsname);
entries[count].mnt_dir = strdup(m->mnt_dir);
entries[count].mnt_type = strdup(m->mnt_type);
count++;
}
endmntent(mountTable);
- if ((mountTable = setmntent(mtab_file, "w"))) {
+ if ((mountTable = setmntent(bb_path_mtab_file, "w"))) {
int i;
for (i = 0; i < count; i++) {
}
endmntent(mountTable);
} else if (errno != EROFS)
- perror_msg("%s", mtab_file);
-}
-
-void write_mtab(char *blockDevice, char *directory,
- char *filesystemType, long flags, char *string_flags)
-{
- FILE *mountTable = setmntent(mtab_file, "a+");
- struct mntent m;
-
- if (mountTable == 0) {
- perror_msg("%s", mtab_file);
- return;
- }
- if (mountTable) {
- int length = strlen(directory);
-
- if (length > 1 && directory[length - 1] == '/')
- directory[length - 1] = '\0';
-
- if (filesystemType == 0) {
- struct mntent *p = find_mount_point(blockDevice, "/proc/mounts");
-
- if (p && p->mnt_type)
- filesystemType = p->mnt_type;
- }
- m.mnt_fsname = blockDevice;
- m.mnt_dir = directory;
- m.mnt_type = filesystemType ? filesystemType : "default";
-
- if (*string_flags) {
- m.mnt_opts = string_flags;
- } else {
- if ((flags | MS_RDONLY) == flags)
- m.mnt_opts = "ro";
- else
- m.mnt_opts = "rw";
- }
-
- m.mnt_freq = 0;
- m.mnt_passno = 0;
- addmntent(mountTable, &m);
- endmntent(mountTable);
- }
+ bb_perror_msg(bb_path_mtab_file);
}
+#endif