[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/debugfs/logdump.c b/ap/app/e2fsprogs/e2fsprogs-1.42.9/debugfs/logdump.c
new file mode 100644
index 0000000..66a5428
--- /dev/null
+++ b/ap/app/e2fsprogs/e2fsprogs-1.42.9/debugfs/logdump.c
@@ -0,0 +1,698 @@
+/*
+ * logdump.c --- dump the contents of the journal out to a file
+ *
+ * Authro: Stephen C. Tweedie, 2001 <sct@redhat.com>
+ * Copyright (C) 2001 Red Hat, Inc.
+ * Based on portions Copyright (C) 1994 Theodore Ts'o.
+ *
+ * This file may be redistributed under the terms of the GNU Public
+ * License.
+ */
+
+#include "config.h"
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <string.h>
+#include <time.h>
+#ifdef HAVE_ERRNO_H
+#include <errno.h>
+#endif
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <utime.h>
+#ifdef HAVE_GETOPT_H
+#include <getopt.h>
+#else
+extern int optind;
+extern char *optarg;
+#endif
+
+#include "debugfs.h"
+#include "blkid/blkid.h"
+#include "jfs_user.h"
+#include <uuid/uuid.h>
+
+enum journal_location {JOURNAL_IS_INTERNAL, JOURNAL_IS_EXTERNAL};
+
+#define ANY_BLOCK ((blk64_t) -1)
+
+static int dump_all, dump_contents, dump_descriptors;
+static blk64_t block_to_dump, bitmap_to_dump, inode_block_to_dump;
+static unsigned int group_to_dump, inode_offset_to_dump;
+static ext2_ino_t inode_to_dump;
+
+struct journal_source
+{
+ enum journal_location where;
+ int fd;
+ ext2_file_t file;
+};
+
+static void dump_journal(char *, FILE *, struct journal_source *);
+
+static void dump_descriptor_block(FILE *, struct journal_source *,
+ char *, journal_superblock_t *,
+ unsigned int *, int, tid_t);
+
+static void dump_revoke_block(FILE *, char *, journal_superblock_t *,
+ unsigned int, int, tid_t);
+
+static void dump_metadata_block(FILE *, struct journal_source *,
+ journal_superblock_t*,
+ unsigned int, unsigned int, unsigned int,
+ int, tid_t);
+
+static void do_hexdump (FILE *, char *, int);
+
+#define WRAP(jsb, blocknr) \
+ if (blocknr >= be32_to_cpu((jsb)->s_maxlen)) \
+ blocknr -= (be32_to_cpu((jsb)->s_maxlen) - \
+ be32_to_cpu((jsb)->s_first));
+
+void do_logdump(int argc, char **argv)
+{
+ int c;
+ int retval;
+ char *out_fn;
+ FILE *out_file;
+
+ char *inode_spec = NULL;
+ char *journal_fn = NULL;
+ int journal_fd = 0;
+ int use_sb = 0;
+ ext2_ino_t journal_inum;
+ struct ext2_inode journal_inode;
+ ext2_file_t journal_file;
+ char *tmp;
+ struct journal_source journal_source;
+ struct ext2_super_block *es = NULL;
+
+ journal_source.where = JOURNAL_IS_INTERNAL;
+ journal_source.fd = 0;
+ journal_source.file = 0;
+ dump_all = 0;
+ dump_contents = 0;
+ dump_descriptors = 1;
+ block_to_dump = ANY_BLOCK;
+ bitmap_to_dump = -1;
+ inode_block_to_dump = ANY_BLOCK;
+ inode_to_dump = -1;
+
+ reset_getopt();
+ while ((c = getopt (argc, argv, "ab:ci:f:s")) != EOF) {
+ switch (c) {
+ case 'a':
+ dump_all++;
+ break;
+ case 'b':
+ block_to_dump = strtoul(optarg, &tmp, 0);
+ if (*tmp) {
+ com_err(argv[0], 0,
+ "Bad block number - %s", optarg);
+ return;
+ }
+ dump_descriptors = 0;
+ break;
+ case 'c':
+ dump_contents++;
+ break;
+ case 'f':
+ journal_fn = optarg;
+ break;
+ case 'i':
+ inode_spec = optarg;
+ dump_descriptors = 0;
+ break;
+ case 's':
+ use_sb++;
+ break;
+ default:
+ goto print_usage;
+ }
+ }
+ if (optind != argc && optind != argc-1) {
+ goto print_usage;
+ }
+
+ if (current_fs)
+ es = current_fs->super;
+
+ if (inode_spec) {
+ int inode_group, group_offset, inodes_per_block;
+
+ if (check_fs_open(argv[0]))
+ return;
+
+ inode_to_dump = string_to_inode(inode_spec);
+ if (!inode_to_dump)
+ return;
+
+ inode_group = ((inode_to_dump - 1)
+ / es->s_inodes_per_group);
+ group_offset = ((inode_to_dump - 1)
+ % es->s_inodes_per_group);
+ inodes_per_block = (current_fs->blocksize
+ / sizeof(struct ext2_inode));
+
+ inode_block_to_dump =
+ ext2fs_inode_table_loc(current_fs, inode_group) +
+ (group_offset / inodes_per_block);
+ inode_offset_to_dump = ((group_offset % inodes_per_block)
+ * sizeof(struct ext2_inode));
+ printf("Inode %u is at group %u, block %llu, offset %u\n",
+ inode_to_dump, inode_group,
+ inode_block_to_dump, inode_offset_to_dump);
+ }
+
+ if (optind == argc) {
+ out_file = stdout;
+ } else {
+ out_fn = argv[optind];
+ out_file = fopen(out_fn, "w");
+ if (!out_file) {
+ com_err(argv[0], errno, "while opening %s for logdump",
+ out_fn);
+ goto errout;
+ }
+ }
+
+ if (block_to_dump != ANY_BLOCK && current_fs != NULL) {
+ group_to_dump = ((block_to_dump -
+ es->s_first_data_block)
+ / es->s_blocks_per_group);
+ bitmap_to_dump = ext2fs_block_bitmap_loc(current_fs, group_to_dump);
+ }
+
+ if (!journal_fn && check_fs_open(argv[0]))
+ goto errout;
+
+ if (journal_fn) {
+ /* Set up to read journal from a regular file somewhere */
+ journal_fd = open(journal_fn, O_RDONLY, 0);
+ if (journal_fd < 0) {
+ com_err(argv[0], errno, "while opening %s for logdump",
+ journal_fn);
+ goto errout;
+ }
+
+ journal_source.where = JOURNAL_IS_EXTERNAL;
+ journal_source.fd = journal_fd;
+ } else if ((journal_inum = es->s_journal_inum)) {
+ if (use_sb) {
+ if (es->s_jnl_backup_type != EXT3_JNL_BACKUP_BLOCKS) {
+ com_err(argv[0], 0,
+ "no journal backup in super block\n");
+ goto errout;
+ }
+ memset(&journal_inode, 0, sizeof(struct ext2_inode));
+ memcpy(&journal_inode.i_block[0], es->s_jnl_blocks,
+ EXT2_N_BLOCKS*4);
+ journal_inode.i_size_high = es->s_jnl_blocks[15];
+ journal_inode.i_size = es->s_jnl_blocks[16];
+ journal_inode.i_links_count = 1;
+ journal_inode.i_mode = LINUX_S_IFREG | 0600;
+ } else {
+ if (debugfs_read_inode(journal_inum, &journal_inode,
+ argv[0]))
+ goto errout;
+ }
+
+ retval = ext2fs_file_open2(current_fs, journal_inum,
+ &journal_inode, 0, &journal_file);
+ if (retval) {
+ com_err(argv[0], retval, "while opening ext2 file");
+ goto errout;
+ }
+ journal_source.where = JOURNAL_IS_INTERNAL;
+ journal_source.file = journal_file;
+ } else {
+ char uuid[37];
+
+ uuid_unparse(es->s_journal_uuid, uuid);
+ journal_fn = blkid_get_devname(NULL, "UUID", uuid);
+ if (!journal_fn)
+ journal_fn = blkid_devno_to_devname(es->s_journal_dev);
+ if (!journal_fn) {
+ com_err(argv[0], 0, "filesystem has no journal");
+ goto errout;
+ }
+ journal_fd = open(journal_fn, O_RDONLY, 0);
+ if (journal_fd < 0) {
+ com_err(argv[0], errno, "while opening %s for logdump",
+ journal_fn);
+ free(journal_fn);
+ goto errout;
+ }
+ fprintf(out_file, "Using external journal found at %s\n",
+ journal_fn);
+ free(journal_fn);
+ journal_source.where = JOURNAL_IS_EXTERNAL;
+ journal_source.fd = journal_fd;
+ }
+
+ dump_journal(argv[0], out_file, &journal_source);
+
+ if (journal_source.where == JOURNAL_IS_INTERNAL)
+ ext2fs_file_close(journal_file);
+ else
+ close(journal_fd);
+
+errout:
+ if (out_file && (out_file != stdout))
+ fclose(out_file);
+
+ return;
+
+print_usage:
+ fprintf(stderr, "%s: Usage: logdump [-acs] [-b<block>] [-i<filespec>]\n\t"
+ "[-f<journal_file>] [output_file]\n", argv[0]);
+}
+
+
+static int read_journal_block(const char *cmd, struct journal_source *source,
+ off_t offset, char *buf, int size,
+ unsigned int *got)
+{
+ int retval;
+
+ if (source->where == JOURNAL_IS_EXTERNAL) {
+ if (lseek(source->fd, offset, SEEK_SET) < 0) {
+ retval = errno;
+ com_err(cmd, retval, "while seeking in reading journal");
+ return retval;
+ }
+ retval = read(source->fd, buf, size);
+ if (retval >= 0) {
+ *got = retval;
+ retval = 0;
+ } else
+ retval = errno;
+ } else {
+ retval = ext2fs_file_lseek(source->file, offset,
+ EXT2_SEEK_SET, NULL);
+ if (retval) {
+ com_err(cmd, retval, "while seeking in reading journal");
+ return retval;
+ }
+
+ retval = ext2fs_file_read(source->file, buf, size, got);
+ }
+
+ if (retval)
+ com_err(cmd, retval, "while reading journal");
+ else if (*got != (unsigned int) size) {
+ com_err(cmd, 0, "short read (read %d, expected %d) "
+ "while reading journal", *got, size);
+ retval = -1;
+ }
+
+ return retval;
+}
+
+static const char *type_to_name(int btype)
+{
+ switch (btype) {
+ case JFS_DESCRIPTOR_BLOCK:
+ return "descriptor block";
+ case JFS_COMMIT_BLOCK:
+ return "commit block";
+ case JFS_SUPERBLOCK_V1:
+ return "V1 superblock";
+ case JFS_SUPERBLOCK_V2:
+ return "V2 superblock";
+ case JFS_REVOKE_BLOCK:
+ return "revoke table";
+ }
+ return "unrecognised type";
+}
+
+
+static void dump_journal(char *cmdname, FILE *out_file,
+ struct journal_source *source)
+{
+ struct ext2_super_block *sb;
+ char jsb_buffer[1024];
+ char buf[8192];
+ journal_superblock_t *jsb;
+ unsigned int blocksize = 1024;
+ unsigned int got;
+ int retval;
+ __u32 magic, sequence, blocktype;
+ journal_header_t *header;
+
+ tid_t transaction;
+ unsigned int blocknr = 0;
+
+ /* First, check to see if there's an ext2 superblock header */
+ retval = read_journal_block(cmdname, source, 0,
+ buf, 2048, &got);
+ if (retval)
+ return;
+
+ jsb = (journal_superblock_t *) buf;
+ sb = (struct ext2_super_block *) (buf+1024);
+#ifdef WORDS_BIGENDIAN
+ if (sb->s_magic == ext2fs_swab16(EXT2_SUPER_MAGIC))
+ ext2fs_swap_super(sb);
+#endif
+
+ if ((be32_to_cpu(jsb->s_header.h_magic) != JFS_MAGIC_NUMBER) &&
+ (sb->s_magic == EXT2_SUPER_MAGIC) &&
+ (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) {
+ blocksize = EXT2_BLOCK_SIZE(sb);
+ blocknr = (blocksize == 1024) ? 2 : 1;
+ uuid_unparse(sb->s_uuid, jsb_buffer);
+ fprintf(out_file, "Ext2 superblock header found.\n");
+ if (dump_all) {
+ fprintf(out_file, "\tuuid=%s\n", jsb_buffer);
+ fprintf(out_file, "\tblocksize=%d\n", blocksize);
+ fprintf(out_file, "\tjournal data size %lu\n",
+ (unsigned long) ext2fs_blocks_count(sb));
+ }
+ }
+
+ /* Next, read the journal superblock */
+
+ retval = read_journal_block(cmdname, source, blocknr*blocksize,
+ jsb_buffer, 1024, &got);
+ if (retval)
+ return;
+
+ jsb = (journal_superblock_t *) jsb_buffer;
+ if (be32_to_cpu(jsb->s_header.h_magic) != JFS_MAGIC_NUMBER) {
+ fprintf(out_file,
+ "Journal superblock magic number invalid!\n");
+ return;
+ }
+ blocksize = be32_to_cpu(jsb->s_blocksize);
+ transaction = be32_to_cpu(jsb->s_sequence);
+ blocknr = be32_to_cpu(jsb->s_start);
+
+ fprintf(out_file, "Journal starts at block %u, transaction %u\n",
+ blocknr, transaction);
+
+ if (!blocknr)
+ /* Empty journal, nothing to do. */
+ return;
+
+ while (1) {
+ retval = read_journal_block(cmdname, source,
+ blocknr*blocksize, buf,
+ blocksize, &got);
+ if (retval || got != blocksize)
+ return;
+
+ header = (journal_header_t *) buf;
+
+ magic = be32_to_cpu(header->h_magic);
+ sequence = be32_to_cpu(header->h_sequence);
+ blocktype = be32_to_cpu(header->h_blocktype);
+
+ if (magic != JFS_MAGIC_NUMBER) {
+ fprintf (out_file, "No magic number at block %u: "
+ "end of journal.\n", blocknr);
+ return;
+ }
+
+ if (sequence != transaction) {
+ fprintf (out_file, "Found sequence %u (not %u) at "
+ "block %u: end of journal.\n",
+ sequence, transaction, blocknr);
+ return;
+ }
+
+ if (dump_descriptors) {
+ fprintf (out_file, "Found expected sequence %u, "
+ "type %u (%s) at block %u\n",
+ sequence, blocktype,
+ type_to_name(blocktype), blocknr);
+ }
+
+ switch (blocktype) {
+ case JFS_DESCRIPTOR_BLOCK:
+ dump_descriptor_block(out_file, source, buf, jsb,
+ &blocknr, blocksize,
+ transaction);
+ continue;
+
+ case JFS_COMMIT_BLOCK:
+ transaction++;
+ blocknr++;
+ WRAP(jsb, blocknr);
+ continue;
+
+ case JFS_REVOKE_BLOCK:
+ dump_revoke_block(out_file, buf, jsb,
+ blocknr, blocksize,
+ transaction);
+ blocknr++;
+ WRAP(jsb, blocknr);
+ continue;
+
+ default:
+ fprintf (out_file, "Unexpected block type %u at "
+ "block %u.\n", blocktype, blocknr);
+ return;
+ }
+ }
+}
+
+
+static void dump_descriptor_block(FILE *out_file,
+ struct journal_source *source,
+ char *buf,
+ journal_superblock_t *jsb,
+ unsigned int *blockp, int blocksize,
+ tid_t transaction)
+{
+ int offset, tag_size = JBD_TAG_SIZE32;
+ char *tagp;
+ journal_block_tag_t *tag;
+ unsigned int blocknr;
+ __u32 tag_block;
+ __u32 tag_flags;
+
+ if (be32_to_cpu(jsb->s_feature_incompat) & JFS_FEATURE_INCOMPAT_64BIT)
+ tag_size = JBD_TAG_SIZE64;
+
+ offset = sizeof(journal_header_t);
+ blocknr = *blockp;
+
+ if (dump_all)
+ fprintf(out_file, "Dumping descriptor block, sequence %u, at "
+ "block %u:\n", transaction, blocknr);
+
+ ++blocknr;
+ WRAP(jsb, blocknr);
+
+ do {
+ /* Work out the location of the current tag, and skip to
+ * the next one... */
+ tagp = &buf[offset];
+ tag = (journal_block_tag_t *) tagp;
+ offset += tag_size;
+
+ /* ... and if we have gone too far, then we've reached the
+ end of this block. */
+ if (offset > blocksize)
+ break;
+
+ tag_block = be32_to_cpu(tag->t_blocknr);
+ tag_flags = be32_to_cpu(tag->t_flags);
+
+ if (!(tag_flags & JFS_FLAG_SAME_UUID))
+ offset += 16;
+
+ dump_metadata_block(out_file, source, jsb,
+ blocknr, tag_block, tag_flags, blocksize,
+ transaction);
+
+ ++blocknr;
+ WRAP(jsb, blocknr);
+
+ } while (!(tag_flags & JFS_FLAG_LAST_TAG));
+
+ *blockp = blocknr;
+}
+
+
+static void dump_revoke_block(FILE *out_file, char *buf,
+ journal_superblock_t *jsb EXT2FS_ATTR((unused)),
+ unsigned int blocknr,
+ int blocksize EXT2FS_ATTR((unused)),
+ tid_t transaction)
+{
+ int offset, max;
+ journal_revoke_header_t *header;
+ unsigned int *entry, rblock;
+
+ if (dump_all)
+ fprintf(out_file, "Dumping revoke block, sequence %u, at "
+ "block %u:\n", transaction, blocknr);
+
+ header = (journal_revoke_header_t *) buf;
+ offset = sizeof(journal_revoke_header_t);
+ max = be32_to_cpu(header->r_count);
+
+ while (offset < max) {
+ entry = (unsigned int *) (buf + offset);
+ rblock = be32_to_cpu(*entry);
+ if (dump_all || rblock == block_to_dump) {
+ fprintf(out_file, " Revoke FS block %u", rblock);
+ if (dump_all)
+ fprintf(out_file, "\n");
+ else
+ fprintf(out_file," at block %u, sequence %u\n",
+ blocknr, transaction);
+ }
+ offset += 4;
+ }
+}
+
+
+static void show_extent(FILE *out_file, int start_extent, int end_extent,
+ __u32 first_block)
+{
+ if (start_extent >= 0 && first_block != 0)
+ fprintf(out_file, "(%d+%u): %u ",
+ start_extent, end_extent-start_extent, first_block);
+}
+
+static void show_indirect(FILE *out_file, const char *name, __u32 where)
+{
+ if (where)
+ fprintf(out_file, "(%s): %u ", name, where);
+}
+
+
+static void dump_metadata_block(FILE *out_file, struct journal_source *source,
+ journal_superblock_t *jsb EXT2FS_ATTR((unused)),
+ unsigned int log_blocknr,
+ unsigned int fs_blocknr,
+ unsigned int log_tag_flags,
+ int blocksize,
+ tid_t transaction)
+{
+ unsigned int got;
+ int retval;
+ char buf[8192];
+
+ if (!(dump_all
+ || (fs_blocknr == block_to_dump)
+ || (fs_blocknr == inode_block_to_dump)
+ || (fs_blocknr == bitmap_to_dump)))
+ return;
+
+ fprintf(out_file, " FS block %u logged at ", fs_blocknr);
+ if (!dump_all)
+ fprintf(out_file, "sequence %u, ", transaction);
+ fprintf(out_file, "journal block %u (flags 0x%x)\n", log_blocknr,
+ log_tag_flags);
+
+ /* There are two major special cases to parse:
+ *
+ * If this block is a block
+ * bitmap block, we need to give it special treatment so that we
+ * can log any allocates and deallocates which affect the
+ * block_to_dump query block.
+ *
+ * If the block is an inode block for the inode being searched
+ * for, then we need to dump the contents of that inode
+ * structure symbolically.
+ */
+
+ if (!(dump_contents && dump_all)
+ && fs_blocknr != block_to_dump
+ && fs_blocknr != bitmap_to_dump
+ && fs_blocknr != inode_block_to_dump)
+ return;
+
+ retval = read_journal_block("logdump", source,
+ blocksize * log_blocknr,
+ buf, blocksize, &got);
+ if (retval)
+ return;
+
+ if (fs_blocknr == bitmap_to_dump) {
+ struct ext2_super_block *super;
+ int offset;
+
+ super = current_fs->super;
+ offset = ((block_to_dump - super->s_first_data_block) %
+ super->s_blocks_per_group);
+
+ fprintf(out_file, " (block bitmap for block %llu: "
+ "block is %s)\n",
+ block_to_dump,
+ ext2fs_test_bit(offset, buf) ? "SET" : "CLEAR");
+ }
+
+ if (fs_blocknr == inode_block_to_dump) {
+ struct ext2_inode *inode;
+ int first, prev, this, start_extent, i;
+
+ fprintf(out_file, " (inode block for inode %u):\n",
+ inode_to_dump);
+
+ inode = (struct ext2_inode *) (buf + inode_offset_to_dump);
+ internal_dump_inode(out_file, " ", inode_to_dump, inode, 0);
+
+ /* Dump out the direct/indirect blocks here:
+ * internal_dump_inode can only dump them from the main
+ * on-disk inode, not from the journaled copy of the
+ * inode. */
+
+ fprintf (out_file, " Blocks: ");
+ first = prev = start_extent = -1;
+
+ for (i=0; i<EXT2_NDIR_BLOCKS; i++) {
+ this = inode->i_block[i];
+ if (start_extent >= 0 && this == prev+1) {
+ prev = this;
+ continue;
+ } else {
+ show_extent(out_file, start_extent, i, first);
+ start_extent = i;
+ first = prev = this;
+ }
+ }
+ show_extent(out_file, start_extent, i, first);
+ show_indirect(out_file, "IND", inode->i_block[i++]);
+ show_indirect(out_file, "DIND", inode->i_block[i++]);
+ show_indirect(out_file, "TIND", inode->i_block[i++]);
+
+ fprintf(out_file, "\n");
+ }
+
+ if (dump_contents)
+ do_hexdump(out_file, buf, blocksize);
+
+}
+
+static void do_hexdump (FILE *out_file, char *buf, int blocksize)
+{
+ int i,j;
+ int *intp;
+ char *charp;
+ unsigned char c;
+
+ intp = (int *) buf;
+ charp = (char *) buf;
+
+ for (i=0; i<blocksize; i+=16) {
+ fprintf(out_file, " %04x: ", i);
+ for (j=0; j<16; j+=4)
+ fprintf(out_file, "%08x ", *intp++);
+ for (j=0; j<16; j++) {
+ c = *charp++;
+ if (c < ' ' || c >= 127)
+ c = '.';
+ fprintf(out_file, "%c", c);
+ }
+ fprintf(out_file, "\n");
+ }
+}
+