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-rw-r--r--debugfs/icheck.c176
1 files changed, 176 insertions, 0 deletions
diff --git a/debugfs/icheck.c b/debugfs/icheck.c
new file mode 100644
index 0000000..ed6e950
--- /dev/null
+++ b/debugfs/icheck.c
@@ -0,0 +1,176 @@
+/*
+ * icheck.c --- given a list of blocks, generate a list of inodes
+ *
+ * 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 "debugfs.h"
+
+struct block_info {
+ blk64_t blk;
+ ext2_ino_t ino;
+};
+
+struct block_walk_struct {
+ struct block_info *barray;
+ e2_blkcnt_t blocks_left;
+ e2_blkcnt_t num_blocks;
+ ext2_ino_t inode;
+};
+
+static int icheck_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
+ blk64_t *block_nr,
+ e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
+ blk64_t ref_block EXT2FS_ATTR((unused)),
+ int ref_offset EXT2FS_ATTR((unused)),
+ void *private)
+{
+ struct block_walk_struct *bw = (struct block_walk_struct *) private;
+ e2_blkcnt_t i;
+
+ for (i=0; i < bw->num_blocks; i++) {
+ if (!bw->barray[i].ino && bw->barray[i].blk == *block_nr) {
+ bw->barray[i].ino = bw->inode;
+ bw->blocks_left--;
+ }
+ }
+ if (!bw->blocks_left)
+ return BLOCK_ABORT;
+
+ return 0;
+}
+
+void do_icheck(int argc, char **argv, int sci_idx EXT2FS_ATTR((unused)),
+ void *infop EXT2FS_ATTR((unused)))
+{
+ struct block_walk_struct bw;
+ struct block_info *binfo;
+ int i;
+ ext2_inode_scan scan = 0;
+ ext2_ino_t ino;
+ struct ext2_inode inode;
+ errcode_t retval;
+ char *block_buf;
+
+ if (argc < 2) {
+ com_err(argv[0], 0, "Usage: icheck <block number> ...");
+ return;
+ }
+ if (check_fs_open(argv[0]))
+ return;
+
+ bw.barray = malloc(sizeof(struct block_info) * argc);
+ if (!bw.barray) {
+ com_err("icheck", ENOMEM,
+ "while allocating inode info array");
+ return;
+ }
+ memset(bw.barray, 0, sizeof(struct block_info) * argc);
+
+ block_buf = malloc(current_fs->blocksize * 3);
+ if (!block_buf) {
+ com_err("icheck", ENOMEM, "while allocating block buffer");
+ goto error_out;
+ }
+
+ for (i=1; i < argc; i++) {
+ if (strtoblk(argv[0], argv[i], NULL, &bw.barray[i-1].blk))
+ goto error_out;
+ }
+
+ bw.num_blocks = bw.blocks_left = argc-1;
+
+ retval = ext2fs_open_inode_scan(current_fs, 0, &scan);
+ if (retval) {
+ com_err("icheck", retval, "while opening inode scan");
+ goto error_out;
+ }
+
+ do {
+ retval = ext2fs_get_next_inode(scan, &ino, &inode);
+ } while (retval == EXT2_ET_BAD_BLOCK_IN_INODE_TABLE);
+ if (retval) {
+ com_err("icheck", retval, "while starting inode scan");
+ goto error_out;
+ }
+
+ while (ino) {
+ blk64_t blk;
+
+ if (!inode.i_links_count)
+ goto next;
+
+ bw.inode = ino;
+
+ blk = ext2fs_file_acl_block(current_fs, &inode);
+ if (blk) {
+ icheck_proc(current_fs, &blk, 0,
+ 0, 0, &bw);
+ if (bw.blocks_left == 0)
+ break;
+ ext2fs_file_acl_block_set(current_fs, &inode, blk);
+ }
+
+ if (!ext2fs_inode_has_valid_blocks2(current_fs, &inode))
+ goto next;
+ /*
+ * To handle filesystems touched by 0.3c extfs; can be
+ * removed later.
+ */
+ if (inode.i_dtime)
+ goto next;
+
+ retval = ext2fs_block_iterate3(current_fs, ino,
+ BLOCK_FLAG_READ_ONLY, block_buf,
+ icheck_proc, &bw);
+ if (retval) {
+ com_err("icheck", retval,
+ "while calling ext2fs_block_iterate");
+ goto next;
+ }
+
+ if (bw.blocks_left == 0)
+ break;
+
+ next:
+ do {
+ retval = ext2fs_get_next_inode(scan, &ino, &inode);
+ } while (retval == EXT2_ET_BAD_BLOCK_IN_INODE_TABLE);
+ if (retval) {
+ com_err("icheck", retval,
+ "while doing inode scan");
+ goto error_out;
+ }
+ }
+
+ printf("Block\tInode number\n");
+ for (i=0, binfo = bw.barray; i < bw.num_blocks; i++, binfo++) {
+ if (binfo->ino == 0) {
+ printf("%llu\t<block not found>\n",
+ (unsigned long long) binfo->blk);
+ continue;
+ }
+ printf("%llu\t%u\n", (unsigned long long) binfo->blk,
+ binfo->ino);
+ }
+
+error_out:
+ free(bw.barray);
+ free(block_buf);
+ if (scan)
+ ext2fs_close_inode_scan(scan);
+ return;
+}