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/* vi: set sw=4 ts=4: */
/*
* Utility routines.
*
* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
*
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
#include <mntent.h>
#include "libbb.h"
#if ENABLE_FEATURE_MTAB_SUPPORT
void FAST_FUNC erase_mtab(const char *name)
{
struct mntent *entries;
int i, count;
FILE *mountTable;
struct mntent *m;
mountTable = setmntent(bb_path_mtab_file, "r");
/* Bummer. Fall back on trying the /proc filesystem */
if (!mountTable) mountTable = setmntent("/proc/mounts", "r");
if (!mountTable) {
bb_perror_msg(bb_path_mtab_file);
return;
}
entries = NULL;
count = 0;
while ((m = getmntent(mountTable)) != 0) {
entries = xrealloc_vector(entries, 3, count);
entries[count].mnt_fsname = xstrdup(m->mnt_fsname);
entries[count].mnt_dir = xstrdup(m->mnt_dir);
entries[count].mnt_type = xstrdup(m->mnt_type);
entries[count].mnt_opts = xstrdup(m->mnt_opts);
entries[count].mnt_freq = m->mnt_freq;
entries[count].mnt_passno = m->mnt_passno;
count++;
}
endmntent(mountTable);
//TODO: make update atomic
mountTable = setmntent(bb_path_mtab_file, "w");
if (mountTable) {
for (i = 0; i < count; i++) {
if (strcmp(entries[i].mnt_fsname, name) != 0
&& strcmp(entries[i].mnt_dir, name) != 0)
addmntent(mountTable, &entries[i]);
}
endmntent(mountTable);
} else if (errno != EROFS)
bb_perror_msg(bb_path_mtab_file);
}
#endif
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