#include "problem.h"
static void check_root(e2fsck_t ctx);
-static void check_directory(e2fsck_t ctx, struct dir_info *dir,
- struct problem_context *pctx);
+static int check_directory(e2fsck_t ctx, struct dir_info *dir,
+ struct problem_context *pctx);
static ino_t get_lost_and_found(e2fsck_t ctx);
static void fix_dotdot(e2fsck_t ctx, struct dir_info *dir, ino_t parent);
static errcode_t adjust_inode_count(e2fsck_t ctx, ino_t ino, int adj);
/*
* Allocate some bitmaps to do loop detection.
*/
- pctx.errcode = ext2fs_allocate_inode_bitmap(fs,
- "inode loop detection bitmap", &inode_loop_detect);
- if (pctx.errcode) {
- pctx.num = 1;
- fix_problem(ctx, PR_3_ALLOCATE_IBITMAP_ERROR, &pctx);
- ctx->flags |= E2F_FLAG_ABORT;
- goto abort_exit;
- }
- pctx.errcode = ext2fs_allocate_inode_bitmap(fs, "inode done bitmap",
+ pctx.errcode = ext2fs_allocate_inode_bitmap(fs, _("inode done bitmap"),
&inode_done_map);
if (pctx.errcode) {
pctx.num = 2;
#ifdef RESOURCE_TRACK
if (ctx->options & E2F_OPT_TIME) {
e2fsck_clear_progbar(ctx);
- print_resource_track("Peak memory", &ctx->global_rtrack);
+ print_resource_track(_("Peak memory"), &ctx->global_rtrack);
}
#endif
if ((ctx->progress)(ctx, 3, count++, maxdirs))
goto abort_exit;
if (ext2fs_test_inode_bitmap(ctx->inode_dir_map, dir->ino))
- check_directory(ctx, dir, &pctx);
+ if (check_directory(ctx, dir, &pctx))
+ goto abort_exit;
}
/*
abort_exit:
e2fsck_free_dir_info(ctx);
- if (inode_loop_detect)
+ if (inode_loop_detect) {
ext2fs_free_inode_bitmap(inode_loop_detect);
- if (inode_done_map)
+ inode_loop_detect = 0;
+ }
+ if (inode_done_map) {
ext2fs_free_inode_bitmap(inode_done_map);
+ inode_done_map = 0;
+ }
#ifdef RESOURCE_TRACK
if (ctx->options & E2F_OPT_TIME2) {
e2fsck_clear_progbar(ctx);
- print_resource_track("Pass 3", &rtrack);
+ print_resource_track(_("Pass 3"), &rtrack);
}
#endif
}
* the lost+found. We have to do loop detection; if we ever discover
* a loop, we treat that as a disconnected directory and offer to
* reparent it to lost+found.
+ *
+ * However, loop detection is expensive, because for very large
+ * filesystems, the inode_loop_detect bitmap is huge, and clearing it
+ * is non-trivial. Loops in filesystems are also a rare error case,
+ * and we shouldn't optimize for error cases. So we try two passes of
+ * the algorithm. The first time, we ignore loop detection and merely
+ * increment a counter; if the counter exceeds some extreme threshold,
+ * then we try again with the loop detection bitmap enabled.
*/
-static void check_directory(e2fsck_t ctx, struct dir_info *dir,
- struct problem_context *pctx)
+static int check_directory(e2fsck_t ctx, struct dir_info *dir,
+ struct problem_context *pctx)
{
- ext2_filsys fs = ctx->fs;
+ ext2_filsys fs = ctx->fs;
struct dir_info *p = dir;
+ int loop_pass = 0, parent_count = 0;
if (!p)
- return;
-
- ext2fs_clear_inode_bitmap(inode_loop_detect);
+ return 0;
- /*
- * Keep going until we find a parent which we've already
- * checked. We know it's either already connected to the
- * directory tree, or it isn't but the user has already told
- * us he doesn't want us to reconnect the disconnected
- * subtree.
- */
- while (!ext2fs_test_inode_bitmap(inode_done_map, p->ino)) {
+ while (1) {
/*
* Mark this inode as being "done"; by the time we
* return from this function, the inode we either be
* verified as being connected to the directory tree,
* or we will have offered to reconnect this to
* lost+found.
+ *
+ * If it was marked done already, then we've reached a
+ * parent we've already checked.
*/
- ext2fs_mark_inode_bitmap(inode_done_map, p->ino);
+ if (ext2fs_mark_inode_bitmap(inode_done_map, p->ino))
+ break;
/*
* If this directory doesn't have a parent, or we've
* reparent it to lost+found
*/
if (!p->parent ||
- (ext2fs_test_inode_bitmap(inode_loop_detect,
- p->parent))) {
+ (loop_pass &&
+ (ext2fs_test_inode_bitmap(inode_loop_detect,
+ p->parent)))) {
pctx->ino = p->ino;
if (fix_problem(ctx, PR_3_UNCONNECTED_DIR, pctx)) {
if (e2fsck_reconnect_file(ctx, p->ino))
}
break;
}
- ext2fs_mark_inode_bitmap(inode_loop_detect,
- p->parent);
- pctx->ino = p->parent;
p = e2fsck_get_dir_info(ctx, p->parent);
if (!p) {
fix_problem(ctx, PR_3_NO_DIRINFO, pctx);
- return;
+ return 0;
+ }
+ if (loop_pass) {
+ ext2fs_mark_inode_bitmap(inode_loop_detect,
+ p->ino);
+ } else if (parent_count++ > 2048) {
+ /*
+ * If we've run into a path depth that's
+ * greater than 2048, try again with the inode
+ * loop bitmap turned on and start from the
+ * top.
+ */
+ loop_pass = 1;
+ if (inode_loop_detect)
+ ext2fs_clear_inode_bitmap(inode_loop_detect);
+ else {
+ pctx->errcode = ext2fs_allocate_inode_bitmap(fs, _("inode loop detection bitmap"), &inode_loop_detect);
+ if (pctx->errcode) {
+ pctx->num = 1;
+ fix_problem(ctx,
+ PR_3_ALLOCATE_IBITMAP_ERROR, pctx);
+ ctx->flags |= E2F_FLAG_ABORT;
+ return -1;
+ }
+ }
+ p = dir;
}
}
if (fix_problem(ctx, PR_3_BAD_DOT_DOT, pctx))
fix_dotdot(ctx, dir, dir->parent);
}
+ return 0;
}
/*
/*
* Finally, create the directory link
*/
- pctx.errcode = ext2fs_link(fs, EXT2_ROOT_INO, name, ino, 0);
+ pctx.errcode = ext2fs_link(fs, EXT2_ROOT_INO, name, ino, EXT2_FT_DIR);
if (pctx.errcode) {
pctx.str = "ext2fs_link";
fix_problem(ctx, PR_3_CREATE_LPF_ERROR, &pctx);
/*
* This routine will connect a file to lost+found
*/
-int e2fsck_reconnect_file(e2fsck_t ctx, ino_t inode)
+int e2fsck_reconnect_file(e2fsck_t ctx, ino_t ino)
{
ext2_filsys fs = ctx->fs;
errcode_t retval;
char name[80];
struct problem_context pctx;
+ struct ext2_inode inode;
+ int file_type = 0;
clear_problem_context(&pctx);
- pctx.ino = inode;
+ pctx.ino = ino;
if (!bad_lost_and_found && !lost_and_found) {
lost_and_found = get_lost_and_found(ctx);
return 1;
}
- sprintf(name, "#%lu", inode);
- retval = ext2fs_link(fs, lost_and_found, name, inode, 0);
+ sprintf(name, "#%lu", ino);
+ if (ext2fs_read_inode(fs, ino, &inode) == 0)
+ file_type = ext2_file_type(inode.i_mode);
+ retval = ext2fs_link(fs, lost_and_found, name, ino, file_type);
if (retval == EXT2_ET_DIR_NO_SPACE) {
if (!fix_problem(ctx, PR_3_EXPAND_LF_DIR, &pctx))
return 1;
fix_problem(ctx, PR_3_CANT_EXPAND_LPF, &pctx);
return 1;
}
- retval = ext2fs_link(fs, lost_and_found, name, inode, 0);
+ retval = ext2fs_link(fs, lost_and_found, name, ino, file_type);
}
if (retval) {
pctx.errcode = retval;
fix_problem(ctx, PR_3_CANT_RECONNECT, &pctx);
return 1;
}
- adjust_inode_count(ctx, inode, +1);
+ adjust_inode_count(ctx, ino, +1);
return 0;
}
inode.i_links_count--;
} else {
/* Should never happen */
- printf("Debug error in e2fsck adjust_inode_count, "
- "should never happen.\n");
- exit(1);
+ fatal_error(ctx, _("Debug error in e2fsck adjust_inode_count, "
+ "should never happen.\n"));
}
retval = ext2fs_write_inode(fs, ino, &inode);
git://git.whamcloud.com / tools / e2fsprogs.git / blobdiff