/*
* pass4.c -- pass #4 of e2fsck: Check reference counts
*
- * Copyright (C) 1993 Theodore Ts'o. This file may be redistributed
- * under the terms of the GNU Public License.
- *
+ * Copyright (C) 1993, 1994, 1995, 1996, 1997 Theodore Ts'o.
+ *
+ * %Begin-Header%
+ * This file may be redistributed under the terms of the GNU Public
+ * License.
+ * %End-Header%
+ *
+ * Pass 4 frees the following data structures:
+ * - A bitmap of which inodes are in bad blocks. (inode_bb_map)
*/
#include "e2fsck.h"
+#include "problem.h"
+
+/*
+ * This routine is called when an inode is not connected to the
+ * directory tree.
+ *
+ * This subroutine returns 1 then the caller shouldn't bother with the
+ * rest of the pass 4 tests.
+ */
+static int disconnect_inode(e2fsck_t ctx, ino_t i)
+{
+ ext2_filsys fs = ctx->fs;
+ struct ext2_inode inode;
+ struct problem_context pctx;
+
+ e2fsck_read_inode(ctx, i, &inode, "pass4: disconnect_inode");
+ clear_problem_context(&pctx);
+ pctx.ino = i;
+ pctx.inode = &inode;
+
+ if (!inode.i_blocks && (LINUX_S_ISREG(inode.i_mode) ||
+ LINUX_S_ISDIR(inode.i_mode))) {
+ /*
+ * This is a zero-length file; prompt to delete it...
+ */
+ if (fix_problem(ctx, PR_4_ZERO_LEN_INODE, &pctx)) {
+ ext2fs_icount_store(ctx->inode_link_info, i, 0);
+ inode.i_links_count = 0;
+ inode.i_dtime = time(0);
+ e2fsck_write_inode(ctx, i, &inode,
+ "disconnect_inode");
+ /*
+ * Fix up the bitmaps...
+ */
+ e2fsck_read_bitmaps(ctx);
+ ext2fs_unmark_inode_bitmap(ctx->inode_used_map, i);
+ ext2fs_unmark_inode_bitmap(ctx->inode_dir_map, i);
+ ext2fs_unmark_inode_bitmap(fs->inode_map, i);
+ ext2fs_mark_ib_dirty(fs);
+ return 0;
+ }
+ }
+
+ /*
+ * Prompt to reconnect.
+ */
+ if (fix_problem(ctx, PR_4_UNATTACHED_INODE, &pctx)) {
+ if (e2fsck_reconnect_file(ctx, i))
+ ext2fs_unmark_valid(fs);
+ } else {
+ /*
+ * If we don't attach the inode, then skip the
+ * i_links_test since there's no point in trying to
+ * force i_links_count to zero.
+ */
+ ext2fs_unmark_valid(fs);
+ return 1;
+ }
+ return 0;
+}
+
-void pass4(ext2_filsys fs)
+void e2fsck_pass4(e2fsck_t ctx)
{
+ ext2_filsys fs = ctx->fs;
ino_t i;
struct ext2_inode inode;
+#ifdef RESOURCE_TRACK
struct resource_track rtrack;
+#endif
+ struct problem_context pctx;
+ __u16 link_count, link_counted;
+ int group, maxgroup;
+#ifdef RESOURCE_TRACK
init_resource_track(&rtrack);
+#endif
#ifdef MTRACE
mtrace_print("Pass 4");
#endif
- if (!preen)
- printf("Pass 4: Checking reference counts\n");
+ clear_problem_context(&pctx);
+
+ if (!(ctx->options & E2F_OPT_PREEN))
+ fix_problem(ctx, PR_4_PASS_HEADER, &pctx);
+
+ group = 0;
+ maxgroup = fs->group_desc_count;
+ if (ctx->progress)
+ if ((ctx->progress)(ctx, 4, 0, maxgroup))
+ return;
+
for (i=1; i <= fs->super->s_inodes_count; i++) {
+ if ((i % fs->super->s_inodes_per_group) == 0) {
+ group++;
+ if (ctx->progress)
+ if ((ctx->progress)(ctx, 4, group, maxgroup))
+ return;
+ }
if (i == EXT2_BAD_INO ||
(i > EXT2_ROOT_INO && i < EXT2_FIRST_INODE(fs->super)))
continue;
- if (!(ext2fs_test_inode_bitmap(inode_used_map, i)))
+ if (!(ext2fs_test_inode_bitmap(ctx->inode_used_map, i)) ||
+ (ctx->inode_bb_map &&
+ ext2fs_test_inode_bitmap(ctx->inode_bb_map, i)))
continue;
- if (inode_count[i] == 0) {
- /*
- * Inode isn't attached to the filesystem;
- * prompt to reconnect.
- */
- printf("Unattached inode %lu\n", i);
- preenhalt(fs);
- if (ask("Connect to /lost+found", 1)) {
- if (reconnect_file(fs, i))
- ext2fs_unmark_valid(fs);
- } else
- ext2fs_unmark_valid(fs);
+ ext2fs_icount_fetch(ctx->inode_link_info, i, &link_count);
+ ext2fs_icount_fetch(ctx->inode_count, i, &link_counted);
+ if (link_counted == 0) {
+ if (e2fsck_process_bad_inode(ctx, 0, i))
+ continue;
+ if (disconnect_inode(ctx, i))
+ continue;
+ ext2fs_icount_fetch(ctx->inode_link_info, i,
+ &link_count);
+ ext2fs_icount_fetch(ctx->inode_count, i,
+ &link_counted);
}
- if (inode_count[i] != inode_link_info[i]) {
- e2fsck_read_inode(fs, i, &inode, "pass4");
- if (inode_link_info[i] != inode.i_links_count) {
- printf("WARNING: PROGRAMMING BUG IN E2FSCK!\n");
- printf("inode_link_info[%ld] is %u, "
- "inode.i_links_count is %d. "
- "They should be the same!\n",
- i, inode_link_info[i],
- inode.i_links_count);
+ if (link_counted != link_count) {
+ e2fsck_read_inode(ctx, i, &inode, "pass4");
+ pctx.ino = i;
+ pctx.inode = &inode;
+ if (link_count != inode.i_links_count) {
+ pctx.num = link_count;
+ fix_problem(ctx,
+ PR_4_INCONSISTENT_COUNT, &pctx);
+ }
+ pctx.num = link_counted;
+ if (fix_problem(ctx, PR_4_BAD_REF_COUNT, &pctx)) {
+ inode.i_links_count = link_counted;
+ e2fsck_write_inode(ctx, i, &inode, "pass4");
}
- printf("Inode %lu has ref count %d, expecting %d.\n",
- i, inode.i_links_count, inode_count[i]);
- if (ask("Set i_nlinks to count", 1)) {
- inode.i_links_count = inode_count[i];
- e2fsck_write_inode(fs, i, &inode, "pass4");
- } else
- ext2fs_unmark_valid(fs);
}
}
- free(inode_link_info); inode_link_info = 0;
- free(inode_count); inode_count = 0;
- if (tflag > 1) {
- printf("Pass 4: ");
- print_resource_track(&rtrack);
- }
+ ext2fs_free_icount(ctx->inode_link_info); ctx->inode_link_info = 0;
+ ext2fs_free_icount(ctx->inode_count); ctx->inode_count = 0;
+ ext2fs_free_inode_bitmap(ctx->inode_bb_map);
+ ctx->inode_bb_map = 0;
+#ifdef RESOURCE_TRACK
+ if (ctx->options & E2F_OPT_TIME2)
+ print_resource_track("Pass 4", &rtrack);
+#endif
}
git://git.whamcloud.com / tools / e2fsprogs.git / blobdiff