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