busybox/libbb/mtab.c
Denis Vlasenko deeed59de0 libbb: introduce and use xrealloc_vector
function                                             old     new   delta
xrealloc_vector_helper                                 -      51     +51
create_list                                           84      99     +15
getopt_main                                          690     695      +5
passwd_main                                         1049    1053      +4
get_cached                                            85      89      +4
msh_main                                            1377    1380      +3
add_match                                             42      41      -1
read_lines                                           720     718      -2
grave                                               1068    1066      -2
fill_match_lines                                     143     141      -2
add_to_dirlist                                        67      65      -2
add_input_file                                        49      47      -2
act                                                  252     250      -2
fsck_main                                           2252    2246      -6
man_main                                             765     757      -8
bb_internal_initgroups                               228     220      -8
cut_main                                            1052    1041     -11
add_edge_to_node                                      55      43     -12
dpkg_main                                           3851    3835     -16
ifupdown_main                                       2202    2178     -24
sort_main                                            838     812     -26
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 5/15 up/down: 82/-124)          Total: -42 bytes
2008-07-08 05:14:36 +00:00

53 lines
1.4 KiB
C

/* 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 tarball for details.
*/
#include <mntent.h>
#include "libbb.h"
#if ENABLE_FEATURE_MTAB_SUPPORT
void FAST_FUNC erase_mtab(const char *name)
{
struct mntent *entries = NULL;
int i, count = 0;
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;
}
while ((m = getmntent(mountTable)) != 0) {
entries = xrealloc(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;
i = count++;
}
endmntent(mountTable);
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