[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/app/e2fsprogs/e2fsprogs-1.42.9/misc/e2undo.c b/ap/app/e2fsprogs/e2fsprogs-1.42.9/misc/e2undo.c
new file mode 100644
index 0000000..a43c26f
--- /dev/null
+++ b/ap/app/e2fsprogs/e2fsprogs-1.42.9/misc/e2undo.c
@@ -0,0 +1,225 @@
+/*
+ * e2undo.c - Replay an undo log onto an ext2/3/4 filesystem
+ *
+ * Copyright IBM Corporation, 2007
+ * Author Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
+ *
+ * %Begin-Header%
+ * This file may be redistributed under the terms of the GNU Public
+ * License.
+ * %End-Header%
+ */
+
+#include "config.h"
+#include <stdio.h>
+#include <stdlib.h>
+#ifdef HAVE_GETOPT_H
+#include <getopt.h>
+#endif
+#include <fcntl.h>
+#if HAVE_ERRNO_H
+#include <errno.h>
+#endif
+#include "ext2fs/tdb.h"
+#include "ext2fs/ext2fs.h"
+#include "nls-enable.h"
+
+static unsigned char mtime_key[] = "filesystem MTIME";
+static unsigned char uuid_key[] = "filesystem UUID";
+static unsigned char blksize_key[] = "filesystem BLKSIZE";
+
+static char *prg_name;
+
+static void usage(void)
+{
+ fprintf(stderr,
+ _("Usage: %s <transaction file> <filesystem>\n"), prg_name);
+ exit(1);
+}
+
+static int check_filesystem(TDB_CONTEXT *tdb, io_channel channel)
+{
+ __u32 s_mtime;
+ __u8 s_uuid[16];
+ errcode_t retval;
+ TDB_DATA tdb_key, tdb_data;
+ struct ext2_super_block super;
+
+ io_channel_set_blksize(channel, SUPERBLOCK_OFFSET);
+ retval = io_channel_read_blk64(channel, 1, -SUPERBLOCK_SIZE, &super);
+ if (retval) {
+ com_err(prg_name, retval,
+ "%s", _("Failed to read the file system data \n"));
+ return retval;
+ }
+
+ tdb_key.dptr = mtime_key;
+ tdb_key.dsize = sizeof(mtime_key);
+ tdb_data = tdb_fetch(tdb, tdb_key);
+ if (!tdb_data.dptr) {
+ retval = EXT2_ET_TDB_SUCCESS + tdb_error(tdb);
+ com_err(prg_name, retval,
+ _("Failed tdb_fetch %s\n"), tdb_errorstr(tdb));
+ return retval;
+ }
+
+ s_mtime = *(__u32 *)tdb_data.dptr;
+ if (super.s_mtime != s_mtime) {
+
+ com_err(prg_name, 0,
+ _("The file system Mount time didn't match %u\n"),
+ s_mtime);
+
+ return -1;
+ }
+
+
+ tdb_key.dptr = uuid_key;
+ tdb_key.dsize = sizeof(uuid_key);
+ tdb_data = tdb_fetch(tdb, tdb_key);
+ if (!tdb_data.dptr) {
+ retval = EXT2_ET_TDB_SUCCESS + tdb_error(tdb);
+ com_err(prg_name, retval,
+ _("Failed tdb_fetch %s\n"), tdb_errorstr(tdb));
+ return retval;
+ }
+ memcpy(s_uuid, tdb_data.dptr, sizeof(s_uuid));
+ if (memcmp(s_uuid, super.s_uuid, sizeof(s_uuid))) {
+ com_err(prg_name, 0, "%s",
+ _("The file system UUID didn't match \n"));
+ return -1;
+ }
+
+ return 0;
+}
+
+static int set_blk_size(TDB_CONTEXT *tdb, io_channel channel)
+{
+ int block_size;
+ errcode_t retval;
+ TDB_DATA tdb_key, tdb_data;
+
+ tdb_key.dptr = blksize_key;
+ tdb_key.dsize = sizeof(blksize_key);
+ tdb_data = tdb_fetch(tdb, tdb_key);
+ if (!tdb_data.dptr) {
+ retval = EXT2_ET_TDB_SUCCESS + tdb_error(tdb);
+ com_err(prg_name, retval,
+ _("Failed tdb_fetch %s\n"), tdb_errorstr(tdb));
+ return retval;
+ }
+
+ block_size = *(int *)tdb_data.dptr;
+#ifdef DEBUG
+ printf("Block size %d\n", block_size);
+#endif
+ io_channel_set_blksize(channel, block_size);
+
+ return 0;
+}
+
+int main(int argc, char *argv[])
+{
+ int c,force = 0;
+ TDB_CONTEXT *tdb;
+ TDB_DATA key, data;
+ io_channel channel;
+ errcode_t retval;
+ int mount_flags;
+ blk64_t blk_num;
+ char *device_name, *tdb_file;
+ io_manager manager = unix_io_manager;
+
+#ifdef ENABLE_NLS
+ setlocale(LC_MESSAGES, "");
+ setlocale(LC_CTYPE, "");
+ bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
+ textdomain(NLS_CAT_NAME);
+ set_com_err_gettext(gettext);
+#endif
+ add_error_table(&et_ext2_error_table);
+
+ prg_name = argv[0];
+ while((c = getopt(argc, argv, "f")) != EOF) {
+ switch (c) {
+ case 'f':
+ force = 1;
+ break;
+ default:
+ usage();
+ }
+ }
+
+ if (argc != optind + 2)
+ usage();
+
+ tdb_file = argv[optind];
+ device_name = argv[optind+1];
+
+ tdb = tdb_open(tdb_file, 0, 0, O_RDONLY, 0600);
+
+ if (!tdb) {
+ com_err(prg_name, errno,
+ _("Failed tdb_open %s\n"), tdb_file);
+ exit(1);
+ }
+
+ retval = ext2fs_check_if_mounted(device_name, &mount_flags);
+ if (retval) {
+ com_err(prg_name, retval, _("Error while determining whether "
+ "%s is mounted.\n"), device_name);
+ exit(1);
+ }
+
+ if (mount_flags & EXT2_MF_MOUNTED) {
+ com_err(prg_name, retval, "%s", _("e2undo should only be run "
+ "on unmounted file system\n"));
+ exit(1);
+ }
+
+ retval = manager->open(device_name,
+ IO_FLAG_EXCLUSIVE | IO_FLAG_RW, &channel);
+ if (retval) {
+ com_err(prg_name, retval,
+ _("Failed to open %s\n"), device_name);
+ exit(1);
+ }
+
+ if (!force && check_filesystem(tdb, channel)) {
+ exit(1);
+ }
+
+ if (set_blk_size(tdb, channel)) {
+ exit(1);
+ }
+
+ for (key = tdb_firstkey(tdb); key.dptr; key = tdb_nextkey(tdb, key)) {
+ if (!strcmp((char *) key.dptr, (char *) mtime_key) ||
+ !strcmp((char *) key.dptr, (char *) uuid_key) ||
+ !strcmp((char *) key.dptr, (char *) blksize_key)) {
+ continue;
+ }
+
+ data = tdb_fetch(tdb, key);
+ if (!data.dptr) {
+ com_err(prg_name, 0,
+ _("Failed tdb_fetch %s\n"), tdb_errorstr(tdb));
+ exit(1);
+ }
+ blk_num = *(blk64_t *)key.dptr;
+ printf(_("Replayed transaction of size %zd at location %llu\n"),
+ data.dsize, blk_num);
+ retval = io_channel_write_blk64(channel, blk_num,
+ -data.dsize, data.dptr);
+ if (retval == -1) {
+ com_err(prg_name, retval,
+ _("Failed write %s\n"),
+ strerror(errno));
+ exit(1);
+ }
+ }
+ io_channel_close(channel);
+ tdb_close(tdb);
+
+ return 0;
+}