[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/app/busybox/src/libbb/mtab.c b/ap/app/busybox/src/libbb/mtab.c
new file mode 100644
index 0000000..22bff64
--- /dev/null
+++ b/ap/app/busybox/src/libbb/mtab.c
@@ -0,0 +1,55 @@
+/* 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