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-rw-r--r--e2fsck/pass1.c4466
1 files changed, 4466 insertions, 0 deletions
diff --git a/e2fsck/pass1.c b/e2fsck/pass1.c
new file mode 100644
index 0000000..a341c72
--- /dev/null
+++ b/e2fsck/pass1.c
@@ -0,0 +1,4466 @@
+/*
+ * pass1.c -- pass #1 of e2fsck: sequential scan of the inode table
+ *
+ * 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 1 of e2fsck iterates over all the inodes in the filesystems,
+ * and applies the following tests to each inode:
+ *
+ * - The mode field of the inode must be legal.
+ * - The size and block count fields of the inode are correct.
+ * - A data block must not be used by another inode
+ *
+ * Pass 1 also gathers the collects the following information:
+ *
+ * - A bitmap of which inodes are in use. (inode_used_map)
+ * - A bitmap of which inodes are directories. (inode_dir_map)
+ * - A bitmap of which inodes are regular files. (inode_reg_map)
+ * - A bitmap of which inodes have bad fields. (inode_bad_map)
+ * - A bitmap of which inodes are in bad blocks. (inode_bb_map)
+ * - A bitmap of which inodes are imagic inodes. (inode_imagic_map)
+ * - A bitmap of which inodes are casefolded. (inode_casefold_map)
+ * - A bitmap of which blocks are in use. (block_found_map)
+ * - A bitmap of which blocks are in use by two inodes (block_dup_map)
+ * - The data blocks of the directory inodes. (dir_map)
+ * - Ref counts for ea_inodes. (ea_inode_refs)
+ * - The encryption policy ID of each encrypted inode. (encrypted_files)
+ *
+ * Pass 1 is designed to stash away enough information so that the
+ * other passes should not need to read in the inode information
+ * during the normal course of a filesystem check. (Although if an
+ * inconsistency is detected, other passes may need to read in an
+ * inode to fix it.)
+ *
+ * Note that pass 1B will be invoked if there are any duplicate blocks
+ * found.
+ */
+
+#define _GNU_SOURCE 1 /* get strnlen() */
+#include "config.h"
+#include <string.h>
+#include <time.h>
+#ifdef HAVE_ERRNO_H
+#include <errno.h>
+#endif
+
+#include "e2fsck.h"
+#include <ext2fs/ext2_ext_attr.h>
+#include <e2p/e2p.h>
+
+#include "problem.h"
+
+#ifdef NO_INLINE_FUNCS
+#define _INLINE_
+#else
+#define _INLINE_ inline
+#endif
+
+#undef DEBUG
+
+struct ea_quota {
+ blk64_t blocks;
+ __u64 inodes;
+};
+
+static int process_block(ext2_filsys fs, blk64_t *blocknr,
+ e2_blkcnt_t blockcnt, blk64_t ref_blk,
+ int ref_offset, void *priv_data);
+static int process_bad_block(ext2_filsys fs, blk64_t *block_nr,
+ e2_blkcnt_t blockcnt, blk64_t ref_blk,
+ int ref_offset, void *priv_data);
+static void check_blocks(e2fsck_t ctx, struct problem_context *pctx,
+ char *block_buf,
+ const struct ea_quota *ea_ibody_quota);
+static void mark_table_blocks(e2fsck_t ctx);
+static void alloc_bb_map(e2fsck_t ctx);
+static void alloc_imagic_map(e2fsck_t ctx);
+static void mark_inode_bad(e2fsck_t ctx, ext2_ino_t ino);
+static void add_casefolded_dir(e2fsck_t ctx, ext2_ino_t ino);
+static void handle_fs_bad_blocks(e2fsck_t ctx);
+static void process_inodes(e2fsck_t ctx, char *block_buf);
+static EXT2_QSORT_TYPE process_inode_cmp(const void *a, const void *b);
+static errcode_t scan_callback(ext2_filsys fs, ext2_inode_scan scan,
+ dgrp_t group, void * priv_data);
+static void adjust_extattr_refcount(e2fsck_t ctx, ext2_refcount_t refcount,
+ char *block_buf, int adjust_sign);
+/* static char *describe_illegal_block(ext2_filsys fs, blk64_t block); */
+
+struct process_block_struct {
+ ext2_ino_t ino;
+ unsigned is_dir:1, is_reg:1, clear:1, suppress:1,
+ fragmented:1, compressed:1, bbcheck:1,
+ inode_modified:1;
+ blk64_t num_blocks;
+ blk64_t max_blocks;
+ blk64_t last_block;
+ e2_blkcnt_t last_init_lblock;
+ e2_blkcnt_t last_db_block;
+ int num_illegal_blocks;
+ blk64_t previous_block;
+ struct ext2_inode *inode;
+ struct problem_context *pctx;
+ ext2fs_block_bitmap fs_meta_blocks;
+ e2fsck_t ctx;
+ blk64_t next_lblock;
+ struct extent_tree_info eti;
+};
+
+struct process_inode_block {
+ ext2_ino_t ino;
+ struct ea_quota ea_ibody_quota;
+ struct ext2_inode_large inode;
+};
+
+struct scan_callback_struct {
+ e2fsck_t ctx;
+ char *block_buf;
+};
+
+/*
+ * For the inodes to process list.
+ */
+static struct process_inode_block *inodes_to_process;
+static int process_inode_count;
+
+static __u64 ext2_max_sizes[EXT2_MAX_BLOCK_LOG_SIZE -
+ EXT2_MIN_BLOCK_LOG_SIZE + 1];
+
+/*
+ * Check to make sure a device inode is real. Returns 1 if the device
+ * checks out, 0 if not.
+ *
+ * Note: this routine is now also used to check FIFO's and Sockets,
+ * since they have the same requirement; the i_block fields should be
+ * zero.
+ */
+int e2fsck_pass1_check_device_inode(ext2_filsys fs EXT2FS_ATTR((unused)),
+ struct ext2_inode *inode)
+{
+ int i;
+
+ /*
+ * If the index or extents flag is set, then this is a bogus
+ * device/fifo/socket
+ */
+ if (inode->i_flags & (EXT2_INDEX_FL | EXT4_EXTENTS_FL))
+ return 0;
+
+ /*
+ * We should be able to do the test below all the time, but
+ * because the kernel doesn't forcibly clear the device
+ * inode's additional i_block fields, there are some rare
+ * occasions when a legitimate device inode will have non-zero
+ * additional i_block fields. So for now, we only complain
+ * when the immutable flag is set, which should never happen
+ * for devices. (And that's when the problem is caused, since
+ * you can't set or clear immutable flags for devices.) Once
+ * the kernel has been fixed we can change this...
+ */
+ if (inode->i_flags & (EXT2_IMMUTABLE_FL | EXT2_APPEND_FL)) {
+ for (i=4; i < EXT2_N_BLOCKS; i++)
+ if (inode->i_block[i])
+ return 0;
+ }
+ return 1;
+}
+
+/*
+ * Check to make sure a symlink inode is real. Returns 1 if the symlink
+ * checks out, 0 if not.
+ */
+int e2fsck_pass1_check_symlink(ext2_filsys fs, ext2_ino_t ino,
+ struct ext2_inode *inode, char *buf)
+{
+ unsigned int buflen;
+ unsigned int len;
+
+ if ((inode->i_size_high || inode->i_size == 0) ||
+ (inode->i_flags & EXT2_INDEX_FL))
+ return 0;
+
+ if (inode->i_flags & EXT4_INLINE_DATA_FL) {
+ size_t inline_size;
+
+ if (inode->i_flags & EXT4_EXTENTS_FL)
+ return 0;
+ if (ext2fs_inline_data_size(fs, ino, &inline_size))
+ return 0;
+ if (inode->i_size != inline_size)
+ return 0;
+
+ return 1;
+ }
+
+ if (ext2fs_is_fast_symlink(inode)) {
+ if (inode->i_flags & EXT4_EXTENTS_FL)
+ return 0;
+ buf = (char *)inode->i_block;
+ buflen = sizeof(inode->i_block);
+ } else {
+ ext2_extent_handle_t handle;
+ struct ext2_extent_info info;
+ struct ext2fs_extent extent;
+ blk64_t blk;
+ int i;
+
+ if (inode->i_flags & EXT4_EXTENTS_FL) {
+ if (ext2fs_extent_open2(fs, ino, inode, &handle))
+ return 0;
+ if (ext2fs_extent_get_info(handle, &info) ||
+ (info.num_entries != 1) ||
+ (info.max_depth != 0)) {
+ ext2fs_extent_free(handle);
+ return 0;
+ }
+ if (ext2fs_extent_get(handle, EXT2_EXTENT_ROOT,
+ &extent) ||
+ (extent.e_lblk != 0) ||
+ (extent.e_len != 1)) {
+ ext2fs_extent_free(handle);
+ return 0;
+ }
+ blk = extent.e_pblk;
+ ext2fs_extent_free(handle);
+ } else {
+ blk = inode->i_block[0];
+
+ for (i = 1; i < EXT2_N_BLOCKS; i++)
+ if (inode->i_block[i])
+ return 0;
+ }
+
+ if (blk < fs->super->s_first_data_block ||
+ blk >= ext2fs_blocks_count(fs->super))
+ return 0;
+
+ if (io_channel_read_blk64(fs->io, blk, 1, buf))
+ return 0;
+
+ buflen = fs->blocksize;
+ }
+
+ if (inode->i_flags & EXT4_ENCRYPT_FL)
+ len = ext2fs_le16_to_cpu(*(__u16 *)buf) + 2;
+ else
+ len = strnlen(buf, buflen);
+
+ if (len >= buflen)
+ return 0;
+
+ if (len != inode->i_size)
+ return 0;
+ return 1;
+}
+
+/*
+ * If the extents or inlinedata flags are set on the inode, offer to clear 'em.
+ */
+#define BAD_SPECIAL_FLAGS (EXT4_EXTENTS_FL | EXT4_INLINE_DATA_FL)
+static void check_extents_inlinedata(e2fsck_t ctx,
+ struct problem_context *pctx)
+{
+ if (!(pctx->inode->i_flags & BAD_SPECIAL_FLAGS))
+ return;
+
+ if (!fix_problem(ctx, PR_1_SPECIAL_EXTENTS_IDATA, pctx))
+ return;
+
+ pctx->inode->i_flags &= ~BAD_SPECIAL_FLAGS;
+ e2fsck_write_inode(ctx, pctx->ino, pctx->inode, "pass1");
+}
+#undef BAD_SPECIAL_FLAGS
+
+/*
+ * If the immutable (or append-only) flag is set on the inode, offer
+ * to clear it.
+ */
+#define BAD_SPECIAL_FLAGS (EXT2_IMMUTABLE_FL | EXT2_APPEND_FL)
+static void check_immutable(e2fsck_t ctx, struct problem_context *pctx)
+{
+ if (!(pctx->inode->i_flags & BAD_SPECIAL_FLAGS))
+ return;
+
+ if (!fix_problem(ctx, PR_1_SET_IMMUTABLE, pctx))
+ return;
+
+ pctx->inode->i_flags &= ~BAD_SPECIAL_FLAGS;
+ e2fsck_write_inode(ctx, pctx->ino, pctx->inode, "pass1");
+}
+
+/*
+ * If device, fifo or socket, check size is zero -- if not offer to
+ * clear it
+ */
+static void check_size(e2fsck_t ctx, struct problem_context *pctx)
+{
+ struct ext2_inode *inode = pctx->inode;
+
+ if (EXT2_I_SIZE(inode) == 0)
+ return;
+
+ if (!fix_problem(ctx, PR_1_SET_NONZSIZE, pctx))
+ return;
+
+ ext2fs_inode_size_set(ctx->fs, inode, 0);
+ e2fsck_write_inode(ctx, pctx->ino, pctx->inode, "pass1");
+}
+
+/*
+ * For a given size, calculate how many blocks would be charged towards quota.
+ */
+static blk64_t size_to_quota_blocks(ext2_filsys fs, size_t size)
+{
+ blk64_t clusters;
+
+ clusters = DIV_ROUND_UP(size, fs->blocksize << fs->cluster_ratio_bits);
+ return EXT2FS_C2B(fs, clusters);
+}
+
+/*
+ * Check validity of EA inode. Return 0 if EA inode is valid, otherwise return
+ * the problem code.
+ */
+static problem_t check_large_ea_inode(e2fsck_t ctx,
+ struct ext2_ext_attr_entry *entry,
+ struct problem_context *pctx,
+ blk64_t *quota_blocks)
+{
+ struct ext2_inode inode;
+ __u32 hash, signed_hash;
+ errcode_t retval;
+
+ /* Check if inode is within valid range */
+ if ((entry->e_value_inum < EXT2_FIRST_INODE(ctx->fs->super)) ||
+ (entry->e_value_inum > ctx->fs->super->s_inodes_count)) {
+ pctx->num = entry->e_value_inum;
+ return PR_1_ATTR_VALUE_EA_INODE;
+ }
+
+ e2fsck_read_inode(ctx, entry->e_value_inum, &inode, "pass1");
+
+ retval = ext2fs_ext_attr_hash_entry3(ctx->fs, entry, NULL, &hash,
+ &signed_hash);
+ if (retval) {
+ com_err("check_large_ea_inode", retval,
+ _("while hashing entry with e_value_inum = %u"),
+ entry->e_value_inum);
+ fatal_error(ctx, 0);
+ }
+
+ if ((hash == entry->e_hash) || (signed_hash == entry->e_hash)) {
+ *quota_blocks = size_to_quota_blocks(ctx->fs,
+ entry->e_value_size);
+ } else {
+ /* This might be an old Lustre-style ea_inode reference. */
+ if (inode.i_mtime == pctx->ino &&
+ inode.i_generation == pctx->inode->i_generation) {
+ *quota_blocks = 0;
+ } else {
+ /* If target inode is also missing EA_INODE flag,
+ * this is likely to be a bad reference.
+ */
+ if (!(inode.i_flags & EXT4_EA_INODE_FL)) {
+ pctx->num = entry->e_value_inum;
+ return PR_1_ATTR_VALUE_EA_INODE;
+ } else {
+ pctx->num = entry->e_hash;
+ return PR_1_ATTR_HASH;
+ }
+ }
+ }
+
+ if (!(inode.i_flags & EXT4_EA_INODE_FL)) {
+ pctx->num = entry->e_value_inum;
+ if (fix_problem(ctx, PR_1_ATTR_SET_EA_INODE_FL, pctx)) {
+ inode.i_flags |= EXT4_EA_INODE_FL;
+ ext2fs_write_inode(ctx->fs, entry->e_value_inum,
+ &inode);
+ } else {
+ return PR_1_ATTR_NO_EA_INODE_FL;
+ }
+ }
+ return 0;
+}
+
+static void inc_ea_inode_refs(e2fsck_t ctx, struct problem_context *pctx,
+ struct ext2_ext_attr_entry *first, void *end)
+{
+ struct ext2_ext_attr_entry *entry = first;
+ struct ext2_ext_attr_entry *np = EXT2_EXT_ATTR_NEXT(entry);
+
+ while ((void *) entry < end && (void *) np < end &&
+ !EXT2_EXT_IS_LAST_ENTRY(entry)) {
+ if (!entry->e_value_inum)
+ goto next;
+ if (!ctx->ea_inode_refs) {
+ pctx->errcode = ea_refcount_create(0,
+ &ctx->ea_inode_refs);
+ if (pctx->errcode) {
+ pctx->num = 4;
+ fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
+ ctx->flags |= E2F_FLAG_ABORT;
+ return;
+ }
+ }
+ ea_refcount_increment(ctx->ea_inode_refs, entry->e_value_inum,
+ 0);
+ next:
+ entry = np;
+ np = EXT2_EXT_ATTR_NEXT(entry);
+ }
+}
+
+static void check_ea_in_inode(e2fsck_t ctx, struct problem_context *pctx,
+ struct ea_quota *ea_ibody_quota)
+{
+ struct ext2_super_block *sb = ctx->fs->super;
+ struct ext2_inode_large *inode;
+ struct ext2_ext_attr_entry *entry;
+ char *start, *header, *end;
+ unsigned int storage_size, remain;
+ problem_t problem = 0;
+ region_t region = 0;
+
+ ea_ibody_quota->blocks = 0;
+ ea_ibody_quota->inodes = 0;
+
+ inode = (struct ext2_inode_large *) pctx->inode;
+ storage_size = EXT2_INODE_SIZE(ctx->fs->super) - EXT2_GOOD_OLD_INODE_SIZE -
+ inode->i_extra_isize;
+ header = ((char *) inode) + EXT2_GOOD_OLD_INODE_SIZE +
+ inode->i_extra_isize;
+ end = header + storage_size;
+ start = header + sizeof(__u32);
+ entry = (struct ext2_ext_attr_entry *) start;
+
+ /* scan all entry's headers first */
+
+ /* take finish entry 0UL into account */
+ remain = storage_size - sizeof(__u32);
+
+ region = region_create(0, storage_size);
+ if (!region) {
+ fix_problem(ctx, PR_1_EA_ALLOC_REGION_ABORT, pctx);
+ problem = 0;
+ ctx->flags |= E2F_FLAG_ABORT;
+ return;
+ }
+ if (region_allocate(region, 0, sizeof(__u32))) {
+ problem = PR_1_INODE_EA_ALLOC_COLLISION;
+ goto fix;
+ }
+
+ while (remain >= sizeof(struct ext2_ext_attr_entry) &&
+ !EXT2_EXT_IS_LAST_ENTRY(entry)) {
+ __u32 hash;
+
+ if (region_allocate(region, (char *)entry - (char *)header,
+ EXT2_EXT_ATTR_LEN(entry->e_name_len))) {
+ problem = PR_1_INODE_EA_ALLOC_COLLISION;
+ goto fix;
+ }
+
+ /* header eats this space */
+ remain -= sizeof(struct ext2_ext_attr_entry);
+
+ /* is attribute name valid? */
+ if (EXT2_EXT_ATTR_SIZE(entry->e_name_len) > remain) {
+ pctx->num = entry->e_name_len;
+ problem = PR_1_ATTR_NAME_LEN;
+ goto fix;
+ }
+
+ /* attribute len eats this space */
+ remain -= EXT2_EXT_ATTR_SIZE(entry->e_name_len);
+
+ if (entry->e_value_inum == 0) {
+ /* check value size */
+ if (entry->e_value_size > remain) {
+ pctx->num = entry->e_value_size;
+ problem = PR_1_ATTR_VALUE_SIZE;
+ goto fix;
+ }
+
+ if (entry->e_value_size &&
+ region_allocate(region,
+ sizeof(__u32) + entry->e_value_offs,
+ EXT2_EXT_ATTR_SIZE(
+ entry->e_value_size))) {
+ problem = PR_1_INODE_EA_ALLOC_COLLISION;
+ goto fix;
+ }
+
+ hash = ext2fs_ext_attr_hash_entry(entry,
+ start + entry->e_value_offs);
+ if (entry->e_hash != 0 && entry->e_hash != hash)
+ hash = ext2fs_ext_attr_hash_entry_signed(entry,
+ start + entry->e_value_offs);
+
+ /* e_hash may be 0 in older inode's ea */
+ if (entry->e_hash != 0 && entry->e_hash != hash) {
+ pctx->num = entry->e_hash;
+ problem = PR_1_ATTR_HASH;
+ goto fix;
+ }
+ } else {
+ blk64_t quota_blocks;
+
+ problem = check_large_ea_inode(ctx, entry, pctx,
+ &quota_blocks);
+ if (problem != 0)
+ goto fix;
+
+ ea_ibody_quota->blocks += quota_blocks;
+ ea_ibody_quota->inodes++;
+ }
+
+ /* If EA value is stored in external inode then it does not
+ * consume space here */
+ if (entry->e_value_inum == 0)
+ remain -= entry->e_value_size;
+
+ entry = EXT2_EXT_ATTR_NEXT(entry);
+ }
+
+ if (region_allocate(region, (char *)entry - (char *)header,
+ sizeof(__u32))) {
+ problem = PR_1_INODE_EA_ALLOC_COLLISION;
+ goto fix;
+ }
+fix:
+ if (region)
+ region_free(region);
+ /*
+ * it seems like a corruption. it's very unlikely we could repair
+ * EA(s) in automatic fashion -bzzz
+ */
+ if (problem == 0 || !fix_problem(ctx, problem, pctx)) {
+ inc_ea_inode_refs(ctx, pctx,
+ (struct ext2_ext_attr_entry *)start, end);
+ return;
+ }
+
+ /* simply remove all possible EA(s) */
+ *((__u32 *)header) = 0UL;
+ e2fsck_write_inode_full(ctx, pctx->ino, pctx->inode,
+ EXT2_INODE_SIZE(sb), "pass1");
+ ea_ibody_quota->blocks = 0;
+ ea_ibody_quota->inodes = 0;
+}
+
+static int check_inode_extra_negative_epoch(__u32 xtime, __u32 extra) {
+ return (xtime & (1U << 31)) != 0 &&
+ (extra & EXT4_EPOCH_MASK) == EXT4_EPOCH_MASK;
+}
+
+#define CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, xtime) \
+ check_inode_extra_negative_epoch(inode->i_##xtime, \
+ inode->i_##xtime##_extra)
+
+/* When today's date is earlier than 2242, we assume that atimes,
+ * ctimes, crtimes, and mtimes with years in the range 2310..2378 are
+ * actually pre-1970 dates mis-encoded.
+ */
+#define EXT4_EXTRA_NEGATIVE_DATE_CUTOFF 2 * (1LL << 32)
+
+static void check_inode_extra_space(e2fsck_t ctx, struct problem_context *pctx,
+ struct ea_quota *ea_ibody_quota)
+{
+ struct ext2_super_block *sb = ctx->fs->super;
+ struct ext2_inode_large *inode;
+ __u32 *eamagic;
+ int min, max;
+
+ ea_ibody_quota->blocks = 0;
+ ea_ibody_quota->inodes = 0;
+
+ inode = (struct ext2_inode_large *) pctx->inode;
+ if (EXT2_INODE_SIZE(sb) == EXT2_GOOD_OLD_INODE_SIZE) {
+ /* this isn't large inode. so, nothing to check */
+ return;
+ }
+
+#if 0
+ printf("inode #%u, i_extra_size %d\n", pctx->ino,
+ inode->i_extra_isize);
+#endif
+ /* i_extra_isize must cover i_extra_isize + i_checksum_hi at least */
+ min = sizeof(inode->i_extra_isize) + sizeof(inode->i_checksum_hi);
+ max = EXT2_INODE_SIZE(sb) - EXT2_GOOD_OLD_INODE_SIZE;
+ /*
+ * For now we will allow i_extra_isize to be 0, but really
+ * implementations should never allow i_extra_isize to be 0
+ */
+ if (inode->i_extra_isize &&
+ (inode->i_extra_isize < min || inode->i_extra_isize > max ||
+ inode->i_extra_isize & 3)) {
+ if (!fix_problem(ctx, PR_1_EXTRA_ISIZE, pctx))
+ return;
+ if (inode->i_extra_isize < min || inode->i_extra_isize > max)
+ inode->i_extra_isize = sb->s_want_extra_isize;
+ else
+ inode->i_extra_isize = (inode->i_extra_isize + 3) & ~3;
+ e2fsck_write_inode_full(ctx, pctx->ino, pctx->inode,
+ EXT2_INODE_SIZE(sb), "pass1");
+ }
+
+ /* check if there is no place for an EA header */
+ if (inode->i_extra_isize >= max - sizeof(__u32))
+ return;
+
+ eamagic = (__u32 *) (((char *) inode) + EXT2_GOOD_OLD_INODE_SIZE +
+ inode->i_extra_isize);
+ if (*eamagic == EXT2_EXT_ATTR_MAGIC) {
+ /* it seems inode has an extended attribute(s) in body */
+ check_ea_in_inode(ctx, pctx, ea_ibody_quota);
+ }
+
+ /*
+ * If the inode's extended atime (ctime, crtime, mtime) is stored in
+ * the old, invalid format, repair it.
+ */
+ if (((sizeof(time_t) <= 4) ||
+ (((sizeof(time_t) > 4) &&
+ ctx->now < EXT4_EXTRA_NEGATIVE_DATE_CUTOFF))) &&
+ (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, atime) ||
+ CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, ctime) ||
+ CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, crtime) ||
+ CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, mtime))) {
+
+ if (!fix_problem(ctx, PR_1_EA_TIME_OUT_OF_RANGE, pctx))
+ return;
+
+ if (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, atime))
+ inode->i_atime_extra &= ~EXT4_EPOCH_MASK;
+ if (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, ctime))
+ inode->i_ctime_extra &= ~EXT4_EPOCH_MASK;
+ if (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, crtime))
+ inode->i_crtime_extra &= ~EXT4_EPOCH_MASK;
+ if (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, mtime))
+ inode->i_mtime_extra &= ~EXT4_EPOCH_MASK;
+ e2fsck_write_inode_full(ctx, pctx->ino, pctx->inode,
+ EXT2_INODE_SIZE(sb), "pass1");
+ }
+
+}
+
+/*
+ * Check to see if the inode might really be a directory, despite i_mode
+ *
+ * This is a lot of complexity for something for which I'm not really
+ * convinced happens frequently in the wild. If for any reason this
+ * causes any problems, take this code out.
+ * [tytso:20070331.0827EDT]
+ */
+static void check_is_really_dir(e2fsck_t ctx, struct problem_context *pctx,
+ char *buf)
+{
+ struct ext2_inode *inode = pctx->inode;
+ struct ext2_dir_entry *dirent;
+ errcode_t retval;
+ blk64_t blk;
+ unsigned int i, rec_len, not_device = 0;
+ int extent_fs;
+ int inlinedata_fs;
+
+ /*
+ * If the mode looks OK, we believe it. If the first block in
+ * the i_block array is 0, this cannot be a directory. If the
+ * inode is extent-mapped, it is still the case that the latter
+ * cannot be 0 - the magic number in the extent header would make
+ * it nonzero.
+ */
+ if (LINUX_S_ISDIR(inode->i_mode) || LINUX_S_ISREG(inode->i_mode) ||
+ LINUX_S_ISLNK(inode->i_mode) || inode->i_block[0] == 0)
+ return;
+
+ /*
+ * Check the block numbers in the i_block array for validity:
+ * zero blocks are skipped (but the first one cannot be zero -
+ * see above), other blocks are checked against the first and
+ * max data blocks (from the the superblock) and against the
+ * block bitmap. Any invalid block found means this cannot be
+ * a directory.
+ *
+ * If there are non-zero blocks past the fourth entry, then
+ * this cannot be a device file: we remember that for the next
+ * check.
+ *
+ * For extent mapped files, we don't do any sanity checking:
+ * just try to get the phys block of logical block 0 and run
+ * with it.
+ *
+ * For inline data files, we just try to get the size of inline
+ * data. If it's true, we will treat it as a directory.
+ */
+
+ extent_fs = ext2fs_has_feature_extents(ctx->fs->super);
+ inlinedata_fs = ext2fs_has_feature_inline_data(ctx->fs->super);
+ if (inlinedata_fs && (inode->i_flags & EXT4_INLINE_DATA_FL)) {
+ size_t size;
+ __u32 dotdot;
+ unsigned int rec_len2;
+ struct ext2_dir_entry de;
+
+ if (ext2fs_inline_data_size(ctx->fs, pctx->ino, &size))
+ return;
+ /*
+ * If the size isn't a multiple of 4, it's probably not a
+ * directory??
+ */
+ if (size & 3)
+ return;
+ /*
+ * If the first 10 bytes don't look like a directory entry,
+ * it's probably not a directory.
+ */
+ memcpy(&dotdot, inode->i_block, sizeof(dotdot));
+ memcpy(&de, ((char *)inode->i_block) + EXT4_INLINE_DATA_DOTDOT_SIZE,
+ EXT2_DIR_REC_LEN(0));
+ dotdot = ext2fs_le32_to_cpu(dotdot);
+ de.inode = ext2fs_le32_to_cpu(de.inode);
+ de.rec_len = ext2fs_le16_to_cpu(de.rec_len);
+ ext2fs_get_rec_len(ctx->fs, &de, &rec_len2);
+ if (dotdot >= ctx->fs->super->s_inodes_count ||
+ (dotdot < EXT2_FIRST_INO(ctx->fs->super) &&
+ dotdot != EXT2_ROOT_INO) ||
+ de.inode >= ctx->fs->super->s_inodes_count ||
+ (de.inode < EXT2_FIRST_INO(ctx->fs->super) &&
+ de.inode != 0) ||
+ rec_len2 > EXT4_MIN_INLINE_DATA_SIZE -
+ EXT4_INLINE_DATA_DOTDOT_SIZE)
+ return;
+ /* device files never have a "system.data" entry */
+ goto isdir;
+ } else if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) {
+ /* extent mapped */
+ if (ext2fs_bmap2(ctx->fs, pctx->ino, inode, 0, 0, 0, 0,
+ &blk))
+ return;
+ /* device files are never extent mapped */
+ not_device++;
+ } else {
+ for (i=0; i < EXT2_N_BLOCKS; i++) {
+ blk = inode->i_block[i];
+ if (!blk)
+ continue;
+ if (i >= 4)
+ not_device++;
+
+ if (blk < ctx->fs->super->s_first_data_block ||
+ blk >= ext2fs_blocks_count(ctx->fs->super) ||
+ ext2fs_fast_test_block_bitmap2(ctx->block_found_map,
+ blk))
+ return; /* Invalid block, can't be dir */
+ }
+ blk = inode->i_block[0];
+ }
+
+ /*
+ * If the mode says this is a device file and the i_links_count field
+ * is sane and we have not ruled it out as a device file previously,
+ * we declare it a device file, not a directory.
+ */
+ if ((LINUX_S_ISCHR(inode->i_mode) || LINUX_S_ISBLK(inode->i_mode)) &&
+ (inode->i_links_count == 1) && !not_device)
+ return;
+
+ /* read the first block */
+ ehandler_operation(_("reading directory block"));
+ retval = ext2fs_read_dir_block4(ctx->fs, blk, buf, 0, pctx->ino);
+ ehandler_operation(0);
+ if (retval)
+ return;
+
+ dirent = (struct ext2_dir_entry *) buf;
+ retval = ext2fs_get_rec_len(ctx->fs, dirent, &rec_len);
+ if (retval)
+ return;
+ if ((ext2fs_dirent_name_len(dirent) != 1) ||
+ (dirent->name[0] != '.') ||
+ (dirent->inode != pctx->ino) ||
+ (rec_len < 12) ||
+ (rec_len % 4) ||
+ (rec_len >= ctx->fs->blocksize - 12))
+ return;
+
+ dirent = (struct ext2_dir_entry *) (buf + rec_len);
+ retval = ext2fs_get_rec_len(ctx->fs, dirent, &rec_len);
+ if (retval)
+ return;
+ if ((ext2fs_dirent_name_len(dirent) != 2) ||
+ (dirent->name[0] != '.') ||
+ (dirent->name[1] != '.') ||
+ (rec_len < 12) ||
+ (rec_len % 4))
+ return;
+
+isdir:
+ if (fix_problem(ctx, PR_1_TREAT_AS_DIRECTORY, pctx)) {
+ inode->i_mode = (inode->i_mode & 07777) | LINUX_S_IFDIR;
+ e2fsck_write_inode_full(ctx, pctx->ino, inode,
+ EXT2_INODE_SIZE(ctx->fs->super),
+ "check_is_really_dir");
+ }
+}
+
+extern errcode_t e2fsck_setup_icount(e2fsck_t ctx, const char *icount_name,
+ int flags, ext2_icount_t hint,
+ ext2_icount_t *ret)
+{
+ unsigned int threshold;
+ unsigned int save_type;
+ ext2_ino_t num_dirs;
+ errcode_t retval;
+ char *tdb_dir;
+ int enable;
+
+ *ret = 0;
+
+ profile_get_string(ctx->profile, "scratch_files", "directory", 0, 0,
+ &tdb_dir);
+ profile_get_uint(ctx->profile, "scratch_files",
+ "numdirs_threshold", 0, 0, &threshold);
+ profile_get_boolean(ctx->profile, "scratch_files",
+ "icount", 0, 1, &enable);
+
+ retval = ext2fs_get_num_dirs(ctx->fs, &num_dirs);
+ if (retval)
+ num_dirs = 1024; /* Guess */
+
+ if (enable && tdb_dir && !access(tdb_dir, W_OK) &&
+ (!threshold || num_dirs > threshold)) {
+ retval = ext2fs_create_icount_tdb(ctx->fs, tdb_dir,
+ flags, ret);
+ if (retval == 0)
+ return 0;
+ }
+ e2fsck_set_bitmap_type(ctx->fs, EXT2FS_BMAP64_RBTREE, icount_name,
+ &save_type);
+ if (ctx->options & E2F_OPT_ICOUNT_FULLMAP)
+ flags |= EXT2_ICOUNT_OPT_FULLMAP;
+ retval = ext2fs_create_icount2(ctx->fs, flags, 0, hint, ret);
+ ctx->fs->default_bitmap_type = save_type;
+ return retval;
+}
+
+static errcode_t recheck_bad_inode_checksum(ext2_filsys fs, ext2_ino_t ino,
+ e2fsck_t ctx,
+ struct problem_context *pctx)
+{
+ errcode_t retval;
+ struct ext2_inode_large inode;
+
+ /*
+ * Reread inode. If we don't see checksum error, then this inode
+ * has been fixed elsewhere.
+ */
+ ctx->stashed_ino = 0;
+ retval = ext2fs_read_inode_full(fs, ino, (struct ext2_inode *)&inode,
+ sizeof(inode));
+ if (retval && retval != EXT2_ET_INODE_CSUM_INVALID)
+ return retval;
+ if (!retval)
+ return 0;
+
+ /*
+ * Checksum still doesn't match. That implies that the inode passes
+ * all the sanity checks, so maybe the checksum is simply corrupt.
+ * See if the user will go for fixing that.
+ */
+ if (!fix_problem(ctx, PR_1_INODE_ONLY_CSUM_INVALID, pctx))
+ return 0;
+
+ retval = ext2fs_write_inode_full(fs, ino, (struct ext2_inode *)&inode,
+ sizeof(inode));
+ return retval;
+}
+
+static void reserve_block_for_root_repair(e2fsck_t ctx)
+{
+ blk64_t blk = 0;
+ errcode_t err;
+ ext2_filsys fs = ctx->fs;
+
+ ctx->root_repair_block = 0;
+ if (ext2fs_test_inode_bitmap2(ctx->inode_used_map, EXT2_ROOT_INO))
+ return;
+
+ err = ext2fs_new_block2(fs, 0, ctx->block_found_map, &blk);
+ if (err)
+ return;
+ ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
+ ctx->root_repair_block = blk;
+}
+
+static void reserve_block_for_lnf_repair(e2fsck_t ctx)
+{
+ blk64_t blk = 0;
+ errcode_t err;
+ ext2_filsys fs = ctx->fs;
+ static const char name[] = "lost+found";
+ ext2_ino_t ino;
+
+ ctx->lnf_repair_block = 0;
+ if (!ext2fs_lookup(fs, EXT2_ROOT_INO, name, sizeof(name)-1, 0, &ino))
+ return;
+
+ err = ext2fs_new_block2(fs, 0, ctx->block_found_map, &blk);
+ if (err)
+ return;
+ ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
+ ctx->lnf_repair_block = blk;
+}
+
+static errcode_t get_inline_data_ea_size(ext2_filsys fs, ext2_ino_t ino,
+ struct ext2_inode *inode,
+ size_t *sz)
+{
+ void *p;
+ struct ext2_xattr_handle *handle;
+ errcode_t retval;
+
+ retval = ext2fs_xattrs_open(fs, ino, &handle);
+ if (retval)
+ return retval;
+
+ retval = ext2fs_xattrs_read_inode(handle,
+ (struct ext2_inode_large *)inode);
+ if (retval)
+ goto err;
+
+ retval = ext2fs_xattr_get(handle, "system.data", &p, sz);
+ if (retval)
+ goto err;
+ ext2fs_free_mem(&p);
+err:
+ (void) ext2fs_xattrs_close(&handle);
+ return retval;
+}
+
+static void finish_processing_inode(e2fsck_t ctx, ext2_ino_t ino,
+ struct problem_context *pctx,
+ int failed_csum)
+{
+ if (!failed_csum)
+ return;
+
+ /*
+ * If the inode failed the checksum and the user didn't
+ * clear the inode, test the checksum again -- if it still
+ * fails, ask the user if the checksum should be corrected.
+ */
+ pctx->errcode = recheck_bad_inode_checksum(ctx->fs, ino, ctx, pctx);
+ if (pctx->errcode)
+ ctx->flags |= E2F_FLAG_ABORT;
+}
+#define FINISH_INODE_LOOP(ctx, ino, pctx, failed_csum) \
+ do { \
+ finish_processing_inode((ctx), (ino), (pctx), (failed_csum)); \
+ if ((ctx)->flags & E2F_FLAG_ABORT) \
+ return; \
+ } while (0)
+
+static int could_be_block_map(ext2_filsys fs, struct ext2_inode *inode)
+{
+ __u32 x;
+ int i;
+
+ for (i = 0; i < EXT2_N_BLOCKS; i++) {
+ x = inode->i_block[i];
+#ifdef WORDS_BIGENDIAN
+ x = ext2fs_swab32(x);
+#endif
+ if (x >= ext2fs_blocks_count(fs->super))
+ return 0;
+ }
+
+ return 1;
+}
+
+/*
+ * Figure out what to do with an inode that has both extents and inline data
+ * inode flags set. Returns -1 if we decide to erase the inode, 0 otherwise.
+ */
+static int fix_inline_data_extents_file(e2fsck_t ctx,
+ ext2_ino_t ino,
+ struct ext2_inode *inode,
+ int inode_size,
+ struct problem_context *pctx)
+{
+ size_t max_inline_ea_size;
+ ext2_filsys fs = ctx->fs;
+ int dirty = 0;
+
+ /* Both feature flags not set? Just run the regular checks */
+ if (!ext2fs_has_feature_extents(fs->super) &&
+ !ext2fs_has_feature_inline_data(fs->super))
+ return 0;
+
+ /* Clear both flags if it's a special file */
+ if (LINUX_S_ISCHR(inode->i_mode) ||
+ LINUX_S_ISBLK(inode->i_mode) ||
+ LINUX_S_ISFIFO(inode->i_mode) ||
+ LINUX_S_ISSOCK(inode->i_mode)) {
+ check_extents_inlinedata(ctx, pctx);
+ return 0;
+ }
+
+ /* If it looks like an extent tree, try to clear inlinedata */
+ if (ext2fs_extent_header_verify(inode->i_block,
+ sizeof(inode->i_block)) == 0 &&
+ fix_problem(ctx, PR_1_CLEAR_INLINE_DATA_FOR_EXTENT, pctx)) {
+ inode->i_flags &= ~EXT4_INLINE_DATA_FL;
+ dirty = 1;
+ goto out;
+ }
+
+ /* If it looks short enough to be inline data, try to clear extents */
+ if (inode_size > EXT2_GOOD_OLD_INODE_SIZE)
+ max_inline_ea_size = inode_size -
+ (EXT2_GOOD_OLD_INODE_SIZE +
+ ((struct ext2_inode_large *)inode)->i_extra_isize);
+ else
+ max_inline_ea_size = 0;
+ if (EXT2_I_SIZE(inode) <
+ EXT4_MIN_INLINE_DATA_SIZE + max_inline_ea_size &&
+ fix_problem(ctx, PR_1_CLEAR_EXTENT_FOR_INLINE_DATA, pctx)) {
+ inode->i_flags &= ~EXT4_EXTENTS_FL;
+ dirty = 1;
+ goto out;
+ }
+
+ /*
+ * Too big for inline data, but no evidence of extent tree -
+ * maybe it's a block map file? If the mappings all look valid?
+ */
+ if (could_be_block_map(fs, inode) &&
+ fix_problem(ctx, PR_1_CLEAR_EXTENT_INLINE_DATA_FLAGS, pctx)) {
+#ifdef WORDS_BIGENDIAN
+ int i;
+
+ for (i = 0; i < EXT2_N_BLOCKS; i++)
+ inode->i_block[i] = ext2fs_swab32(inode->i_block[i]);
+#endif
+
+ inode->i_flags &= ~(EXT4_EXTENTS_FL | EXT4_INLINE_DATA_FL);
+ dirty = 1;
+ goto out;
+ }
+
+ /* Oh well, just clear the busted inode. */
+ if (fix_problem(ctx, PR_1_CLEAR_EXTENT_INLINE_DATA_INODE, pctx)) {
+ e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
+ return -1;
+ }
+
+out:
+ if (dirty)
+ e2fsck_write_inode(ctx, ino, inode, "pass1");
+
+ return 0;
+}
+
+static void pass1_readahead(e2fsck_t ctx, dgrp_t *group, ext2_ino_t *next_ino)
+{
+ ext2_ino_t inodes_in_group = 0, inodes_per_block, inodes_per_buffer;
+ dgrp_t start = *group, grp;
+ blk64_t blocks_to_read = 0;
+ errcode_t err = EXT2_ET_INVALID_ARGUMENT;
+
+ if (ctx->readahead_kb == 0)
+ goto out;
+
+ /* Keep iterating groups until we have enough to readahead */
+ inodes_per_block = EXT2_INODES_PER_BLOCK(ctx->fs->super);
+ for (grp = start; grp < ctx->fs->group_desc_count; grp++) {
+ if (ext2fs_bg_flags_test(ctx->fs, grp, EXT2_BG_INODE_UNINIT))
+ continue;
+ inodes_in_group = ctx->fs->super->s_inodes_per_group -
+ ext2fs_bg_itable_unused(ctx->fs, grp);
+ blocks_to_read += (inodes_in_group + inodes_per_block - 1) /
+ inodes_per_block;
+ if (blocks_to_read * ctx->fs->blocksize >
+ ctx->readahead_kb * 1024)
+ break;
+ }
+
+ err = e2fsck_readahead(ctx->fs, E2FSCK_READA_ITABLE, start,
+ grp - start + 1);
+ if (err == EAGAIN) {
+ ctx->readahead_kb /= 2;
+ err = 0;
+ }
+
+out:
+ if (err) {
+ /* Error; disable itable readahead */
+ *group = ctx->fs->group_desc_count;
+ *next_ino = ctx->fs->super->s_inodes_count;
+ } else {
+ /*
+ * Don't do more readahead until we've reached the first inode
+ * of the last inode scan buffer block for the last group.
+ */
+ *group = grp + 1;
+ inodes_per_buffer = (ctx->inode_buffer_blocks ?
+ ctx->inode_buffer_blocks :
+ EXT2_INODE_SCAN_DEFAULT_BUFFER_BLOCKS) *
+ ctx->fs->blocksize /
+ EXT2_INODE_SIZE(ctx->fs->super);
+ inodes_in_group--;
+ *next_ino = inodes_in_group -
+ (inodes_in_group % inodes_per_buffer) + 1 +
+ (grp * ctx->fs->super->s_inodes_per_group);
+ }
+}
+
+/*
+ * Check if the passed ino is one of the used superblock quota inodes.
+ *
+ * Before the quota inodes were journaled, older superblock quota inodes
+ * were just regular files in the filesystem and not reserved inodes. This
+ * checks if the passed ino is one of the s_*_quota_inum superblock fields,
+ * which may not always be the same as the EXT4_*_QUOTA_INO fields.
+ */
+static int quota_inum_is_super(struct ext2_super_block *sb, ext2_ino_t ino)
+{
+ enum quota_type qtype;
+
+ for (qtype = 0; qtype < MAXQUOTAS; qtype++)
+ if (*quota_sb_inump(sb, qtype) == ino)
+ return 1;
+
+ return 0;
+}
+
+/*
+ * Check if the passed ino is one of the reserved quota inodes.
+ * This checks if the inode number is one of the reserved EXT4_*_QUOTA_INO
+ * inodes. These inodes may or may not be in use by the quota feature.
+ */
+static int quota_inum_is_reserved(ext2_filsys fs, ext2_ino_t ino)
+{
+ enum quota_type qtype;
+
+ for (qtype = 0; qtype < MAXQUOTAS; qtype++)
+ if (quota_type2inum(qtype, fs->super) == ino)
+ return 1;
+
+ return 0;
+}
+
+void e2fsck_pass1(e2fsck_t ctx)
+{
+ int i;
+ __u64 max_sizes;
+ ext2_filsys fs = ctx->fs;
+ ext2_ino_t ino = 0;
+ struct ext2_inode *inode = NULL;
+ ext2_inode_scan scan = NULL;
+ char *block_buf = NULL;
+#ifdef RESOURCE_TRACK
+ struct resource_track rtrack;
+#endif
+ unsigned char frag, fsize;
+ struct problem_context pctx;
+ struct scan_callback_struct scan_struct;
+ struct ext2_super_block *sb = ctx->fs->super;
+ const char *old_op;
+ const char *eop_next_inode = _("getting next inode from scan");
+ int imagic_fs, extent_fs, inlinedata_fs, casefold_fs;
+ int low_dtime_check = 1;
+ unsigned int inode_size = EXT2_INODE_SIZE(fs->super);
+ unsigned int bufsize;
+ int failed_csum = 0;
+ ext2_ino_t ino_threshold = 0;
+ dgrp_t ra_group = 0;
+ struct ea_quota ea_ibody_quota;
+
+ init_resource_track(&rtrack, ctx->fs->io);
+ clear_problem_context(&pctx);
+
+ /* If we can do readahead, figure out how many groups to pull in. */
+ if (!e2fsck_can_readahead(ctx->fs))
+ ctx->readahead_kb = 0;
+ else if (ctx->readahead_kb == ~0ULL)
+ ctx->readahead_kb = e2fsck_guess_readahead(ctx->fs);
+ pass1_readahead(ctx, &ra_group, &ino_threshold);
+
+ if (!(ctx->options & E2F_OPT_PREEN))
+ fix_problem(ctx, PR_1_PASS_HEADER, &pctx);
+
+ if (ext2fs_has_feature_dir_index(fs->super) &&
+ !(ctx->options & E2F_OPT_NO)) {
+ if (ext2fs_u32_list_create(&ctx->dirs_to_hash, 50))
+ ctx->dirs_to_hash = 0;
+ }
+
+#ifdef MTRACE
+ mtrace_print("Pass 1");
+#endif
+
+#define EXT2_BPP(bits) (1ULL << ((bits) - 2))
+
+ for (i = EXT2_MIN_BLOCK_LOG_SIZE; i <= EXT2_MAX_BLOCK_LOG_SIZE; i++) {
+ max_sizes = EXT2_NDIR_BLOCKS + EXT2_BPP(i);
+ max_sizes = max_sizes + EXT2_BPP(i) * EXT2_BPP(i);
+ max_sizes = max_sizes + EXT2_BPP(i) * EXT2_BPP(i) * EXT2_BPP(i);
+ max_sizes = (max_sizes * (1UL << i));
+ ext2_max_sizes[i - EXT2_MIN_BLOCK_LOG_SIZE] = max_sizes;
+ }
+#undef EXT2_BPP
+
+ imagic_fs = ext2fs_has_feature_imagic_inodes(sb);
+ extent_fs = ext2fs_has_feature_extents(sb);
+ inlinedata_fs = ext2fs_has_feature_inline_data(sb);
+ casefold_fs = ext2fs_has_feature_casefold(sb);
+
+ /*
+ * Allocate bitmaps structures
+ */
+ pctx.errcode = e2fsck_allocate_inode_bitmap(fs, _("in-use inode map"),
+ EXT2FS_BMAP64_RBTREE,
+ "inode_used_map",
+ &ctx->inode_used_map);
+ if (pctx.errcode) {
+ pctx.num = 1;
+ fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
+ ctx->flags |= E2F_FLAG_ABORT;
+ return;
+ }
+ pctx.errcode = e2fsck_allocate_inode_bitmap(fs,
+ _("directory inode map"),
+ EXT2FS_BMAP64_AUTODIR,
+ "inode_dir_map", &ctx->inode_dir_map);
+ if (pctx.errcode) {
+ pctx.num = 2;
+ fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
+ ctx->flags |= E2F_FLAG_ABORT;
+ return;
+ }
+ pctx.errcode = e2fsck_allocate_inode_bitmap(fs,
+ _("regular file inode map"), EXT2FS_BMAP64_RBTREE,
+ "inode_reg_map", &ctx->inode_reg_map);
+ if (pctx.errcode) {
+ pctx.num = 6;
+ fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
+ ctx->flags |= E2F_FLAG_ABORT;
+ return;
+ }
+ pctx.errcode = e2fsck_allocate_subcluster_bitmap(fs,
+ _("in-use block map"), EXT2FS_BMAP64_RBTREE,
+ "block_found_map", &ctx->block_found_map);
+ if (pctx.errcode) {
+ pctx.num = 1;
+ fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
+ ctx->flags |= E2F_FLAG_ABORT;
+ return;
+ }
+ pctx.errcode = e2fsck_allocate_block_bitmap(fs,
+ _("metadata block map"), EXT2FS_BMAP64_RBTREE,
+ "block_metadata_map", &ctx->block_metadata_map);
+ if (pctx.errcode) {
+ pctx.num = 1;
+ fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
+ ctx->flags |= E2F_FLAG_ABORT;
+ return;
+ }
+ if (casefold_fs) {
+ pctx.errcode =
+ e2fsck_allocate_inode_bitmap(fs,
+ _("inode casefold map"),
+ EXT2FS_BMAP64_RBTREE,
+ "inode_casefold_map",
+ &ctx->inode_casefold_map);
+ if (pctx.errcode) {
+ pctx.num = 1;
+ fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
+ ctx->flags |= E2F_FLAG_ABORT;
+ return;
+ }
+ }
+ pctx.errcode = e2fsck_setup_icount(ctx, "inode_link_info", 0, NULL,
+ &ctx->inode_link_info);
+ if (pctx.errcode) {
+ fix_problem(ctx, PR_1_ALLOCATE_ICOUNT, &pctx);
+ ctx->flags |= E2F_FLAG_ABORT;
+ return;
+ }
+ bufsize = inode_size;
+ if (bufsize < sizeof(struct ext2_inode_large))
+ bufsize = sizeof(struct ext2_inode_large);
+ inode = (struct ext2_inode *)
+ e2fsck_allocate_memory(ctx, bufsize, "scratch inode");
+
+ inodes_to_process = (struct process_inode_block *)
+ e2fsck_allocate_memory(ctx,
+ (ctx->process_inode_size *
+ sizeof(struct process_inode_block)),
+ "array of inodes to process");
+ process_inode_count = 0;
+
+ pctx.errcode = ext2fs_init_dblist(fs, 0);
+ if (pctx.errcode) {
+ fix_problem(ctx, PR_1_ALLOCATE_DBCOUNT, &pctx);
+ ctx->flags |= E2F_FLAG_ABORT;
+ goto endit;
+ }
+
+ /*
+ * If the last orphan field is set, clear it, since the pass1
+ * processing will automatically find and clear the orphans.
+ * In the future, we may want to try using the last_orphan
+ * linked list ourselves, but for now, we clear it so that the
+ * ext3 mount code won't get confused.
+ */
+ if (!(ctx->options & E2F_OPT_READONLY)) {
+ if (fs->super->s_last_orphan) {
+ fs->super->s_last_orphan = 0;
+ ext2fs_mark_super_dirty(fs);
+ }
+ }
+
+ mark_table_blocks(ctx);
+ pctx.errcode = ext2fs_convert_subcluster_bitmap(fs,
+ &ctx->block_found_map);
+ if (pctx.errcode) {
+ fix_problem(ctx, PR_1_CONVERT_SUBCLUSTER, &pctx);
+ ctx->flags |= E2F_FLAG_ABORT;
+ goto endit;
+ }
+ block_buf = (char *) e2fsck_allocate_memory(ctx, fs->blocksize * 3,
+ "block iterate buffer");
+ if (EXT2_INODE_SIZE(fs->super) == EXT2_GOOD_OLD_INODE_SIZE)
+ e2fsck_use_inode_shortcuts(ctx, 1);
+ e2fsck_intercept_block_allocations(ctx);
+ old_op = ehandler_operation(_("opening inode scan"));
+ pctx.errcode = ext2fs_open_inode_scan(fs, ctx->inode_buffer_blocks,
+ &scan);
+ ehandler_operation(old_op);
+ if (pctx.errcode) {
+ fix_problem(ctx, PR_1_ISCAN_ERROR, &pctx);
+ ctx->flags |= E2F_FLAG_ABORT;
+ goto endit;
+ }
+ ext2fs_inode_scan_flags(scan, EXT2_SF_SKIP_MISSING_ITABLE |
+ EXT2_SF_WARN_GARBAGE_INODES, 0);
+ ctx->stashed_inode = inode;
+ scan_struct.ctx = ctx;
+ scan_struct.block_buf = block_buf;
+ ext2fs_set_inode_callback(scan, scan_callback, &scan_struct);
+ if (ctx->progress && ((ctx->progress)(ctx, 1, 0,
+ ctx->fs->group_desc_count)))
+ goto endit;
+ if ((fs->super->s_wtime &&
+ fs->super->s_wtime < fs->super->s_inodes_count) ||
+ (fs->super->s_mtime &&
+ fs->super->s_mtime < fs->super->s_inodes_count) ||
+ (fs->super->s_mkfs_time &&
+ fs->super->s_mkfs_time < fs->super->s_inodes_count))
+ low_dtime_check = 0;
+
+ if (ext2fs_has_feature_mmp(fs->super) &&
+ fs->super->s_mmp_block > fs->super->s_first_data_block &&
+ fs->super->s_mmp_block < ext2fs_blocks_count(fs->super))
+ ext2fs_mark_block_bitmap2(ctx->block_found_map,
+ fs->super->s_mmp_block);
+
+ /* Set up ctx->lost_and_found if possible */
+ (void) e2fsck_get_lost_and_found(ctx, 0);
+
+ while (1) {
+ if (ino % (fs->super->s_inodes_per_group * 4) == 1) {
+ if (e2fsck_mmp_update(fs))
+ fatal_error(ctx, 0);
+ }
+ old_op = ehandler_operation(eop_next_inode);
+ pctx.errcode = ext2fs_get_next_inode_full(scan, &ino,
+ inode, inode_size);
+ if (ino > ino_threshold)
+ pass1_readahead(ctx, &ra_group, &ino_threshold);
+ ehandler_operation(old_op);
+ if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
+ goto endit;
+ if (pctx.errcode == EXT2_ET_BAD_BLOCK_IN_INODE_TABLE) {
+ /*
+ * If badblocks says badblocks is bad, offer to clear
+ * the list, update the in-core bb list, and restart
+ * the inode scan.
+ */
+ if (ino == EXT2_BAD_INO &&
+ fix_problem(ctx, PR_1_BADBLOCKS_IN_BADBLOCKS,
+ &pctx)) {
+ errcode_t err;
+
+ e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
+ ext2fs_badblocks_list_free(ctx->fs->badblocks);
+ ctx->fs->badblocks = NULL;
+ err = ext2fs_read_bb_inode(ctx->fs,
+ &ctx->fs->badblocks);
+ if (err) {
+ fix_problem(ctx, PR_1_ISCAN_ERROR,
+ &pctx);
+ ctx->flags |= E2F_FLAG_ABORT;
+ } else
+ ctx->flags |= E2F_FLAG_RESTART;
+ goto endit;
+ }
+ if (!ctx->inode_bb_map)
+ alloc_bb_map(ctx);
+ ext2fs_mark_inode_bitmap2(ctx->inode_bb_map, ino);
+ ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
+ continue;
+ }
+ if (pctx.errcode &&
+ pctx.errcode != EXT2_ET_INODE_CSUM_INVALID &&
+ pctx.errcode != EXT2_ET_INODE_IS_GARBAGE) {
+ fix_problem(ctx, PR_1_ISCAN_ERROR, &pctx);
+ ctx->flags |= E2F_FLAG_ABORT;
+ goto endit;
+ }
+ if (!ino)
+ break;
+ pctx.ino = ino;
+ pctx.inode = inode;
+ ctx->stashed_ino = ino;
+
+ /* Clear trashed inode? */
+ if (pctx.errcode == EXT2_ET_INODE_IS_GARBAGE &&
+ inode->i_links_count > 0 &&
+ fix_problem(ctx, PR_1_INODE_IS_GARBAGE, &pctx)) {
+ pctx.errcode = 0;
+ e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
+ }
+ failed_csum = pctx.errcode != 0;
+
+ /*
+ * Check for inodes who might have been part of the
+ * orphaned list linked list. They should have gotten
+ * dealt with by now, unless the list had somehow been
+ * corrupted.
+ *
+ * FIXME: In the future, inodes which are still in use
+ * (and which are therefore) pending truncation should
+ * be handled specially. Right now we just clear the
+ * dtime field, and the normal e2fsck handling of
+ * inodes where i_size and the inode blocks are
+ * inconsistent is to fix i_size, instead of releasing
+ * the extra blocks. This won't catch the inodes that
+ * was at the end of the orphan list, but it's better
+ * than nothing. The right answer is that there
+ * shouldn't be any bugs in the orphan list handling. :-)
+ */
+ if (inode->i_dtime && low_dtime_check &&
+ inode->i_dtime < ctx->fs->super->s_inodes_count) {
+ if (fix_problem(ctx, PR_1_LOW_DTIME, &pctx)) {
+ inode->i_dtime = inode->i_links_count ?
+ 0 : ctx->now;
+ e2fsck_write_inode(ctx, ino, inode,
+ "pass1");
+ failed_csum = 0;
+ }
+ }
+
+ if (inode->i_links_count) {
+ pctx.errcode = ext2fs_icount_store(ctx->inode_link_info,
+ ino, inode->i_links_count);
+ if (pctx.errcode) {
+ pctx.num = inode->i_links_count;
+ fix_problem(ctx, PR_1_ICOUNT_STORE, &pctx);
+ ctx->flags |= E2F_FLAG_ABORT;
+ goto endit;
+ }
+ } else if ((ino >= EXT2_FIRST_INODE(fs->super)) &&
+ !quota_inum_is_reserved(fs, ino)) {
+ if (!inode->i_dtime && inode->i_mode) {
+ if (fix_problem(ctx,
+ PR_1_ZERO_DTIME, &pctx)) {
+ inode->i_dtime = ctx->now;
+ e2fsck_write_inode(ctx, ino, inode,
+ "pass1");
+ failed_csum = 0;
+ }
+ }
+ FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
+ continue;
+ }
+
+ if ((inode->i_flags & EXT4_CASEFOLD_FL) &&
+ ((!LINUX_S_ISDIR(inode->i_mode) &&
+ fix_problem(ctx, PR_1_CASEFOLD_NONDIR, &pctx)) ||
+ (!casefold_fs &&
+ fix_problem(ctx, PR_1_CASEFOLD_FEATURE, &pctx)))) {
+ inode->i_flags &= ~EXT4_CASEFOLD_FL;
+ e2fsck_write_inode(ctx, ino, inode, "pass1");
+ }
+
+ /* Conflicting inlinedata/extents inode flags? */
+ if ((inode->i_flags & EXT4_INLINE_DATA_FL) &&
+ (inode->i_flags & EXT4_EXTENTS_FL)) {
+ int res = fix_inline_data_extents_file(ctx, ino, inode,
+ inode_size,
+ &pctx);
+ if (res < 0) {
+ /* skip FINISH_INODE_LOOP */
+ continue;
+ }
+ }
+
+ /* Test for incorrect inline_data flags settings. */
+ if ((inode->i_flags & EXT4_INLINE_DATA_FL) && !inlinedata_fs &&
+ (ino >= EXT2_FIRST_INODE(fs->super))) {
+ size_t size = 0;
+
+ pctx.errcode = get_inline_data_ea_size(fs, ino, inode,
+ &size);
+ if (!pctx.errcode &&
+ fix_problem(ctx, PR_1_INLINE_DATA_FEATURE, &pctx)) {
+ ext2fs_set_feature_inline_data(sb);
+ ext2fs_mark_super_dirty(fs);
+ inlinedata_fs = 1;
+ } else if (fix_problem(ctx, PR_1_INLINE_DATA_SET, &pctx)) {
+ e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
+ /* skip FINISH_INODE_LOOP */
+ continue;
+ }
+ }
+
+ /* Test for inline data flag but no attr */
+ if ((inode->i_flags & EXT4_INLINE_DATA_FL) && inlinedata_fs &&
+ (ino >= EXT2_FIRST_INODE(fs->super))) {
+ size_t size = 0;
+ errcode_t err;
+ int flags;
+
+ flags = fs->flags;
+ if (failed_csum)
+ fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
+ err = get_inline_data_ea_size(fs, ino, inode, &size);
+ fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
+ (fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
+
+ switch (err) {
+ case 0:
+ /* Everything is awesome... */
+ break;
+ case EXT2_ET_BAD_EA_BLOCK_NUM:
+ case EXT2_ET_BAD_EA_HASH:
+ case EXT2_ET_BAD_EA_HEADER:
+ case EXT2_ET_EA_BAD_NAME_LEN:
+ case EXT2_ET_EA_BAD_VALUE_SIZE:
+ case EXT2_ET_EA_KEY_NOT_FOUND:
+ case EXT2_ET_EA_NO_SPACE:
+ case EXT2_ET_MISSING_EA_FEATURE:
+ case EXT2_ET_INLINE_DATA_CANT_ITERATE:
+ case EXT2_ET_INLINE_DATA_NO_BLOCK:
+ case EXT2_ET_INLINE_DATA_NO_SPACE:
+ case EXT2_ET_NO_INLINE_DATA:
+ case EXT2_ET_EXT_ATTR_CSUM_INVALID:
+ case EXT2_ET_EA_BAD_VALUE_OFFSET:
+ case EXT2_ET_EA_INODE_CORRUPTED:
+ /* broken EA or no system.data EA; truncate */
+ if (fix_problem(ctx, PR_1_INLINE_DATA_NO_ATTR,
+ &pctx)) {
+ err = ext2fs_inode_size_set(fs, inode, 0);
+ if (err) {
+ pctx.errcode = err;
+ ctx->flags |= E2F_FLAG_ABORT;
+ goto endit;
+ }
+ inode->i_flags &= ~EXT4_INLINE_DATA_FL;
+ memset(&inode->i_block, 0,
+ sizeof(inode->i_block));
+ e2fsck_write_inode(ctx, ino, inode,
+ "pass1");
+ failed_csum = 0;
+ }
+ break;
+ default:
+ /* Some other kind of non-xattr error? */
+ pctx.errcode = err;
+ ctx->flags |= E2F_FLAG_ABORT;
+ goto endit;
+ }
+ }
+
+ /*
+ * Test for incorrect extent flag settings.
+ *
+ * On big-endian machines we must be careful:
+ * When the inode is read, the i_block array is not swapped
+ * if the extent flag is set. Therefore if we are testing
+ * for or fixing a wrongly-set flag, we must potentially
+ * (un)swap before testing, or after fixing.
+ */
+
+ /*
+ * In this case the extents flag was set when read, so
+ * extent_header_verify is ok. If the inode is cleared,
+ * no need to swap... so no extra swapping here.
+ */
+ if ((inode->i_flags & EXT4_EXTENTS_FL) && !extent_fs &&
+ (inode->i_links_count || (ino == EXT2_BAD_INO) ||
+ (ino == EXT2_ROOT_INO) || (ino == EXT2_JOURNAL_INO))) {
+ if ((ext2fs_extent_header_verify(inode->i_block,
+ sizeof(inode->i_block)) == 0) &&
+ fix_problem(ctx, PR_1_EXTENT_FEATURE, &pctx)) {
+ ext2fs_set_feature_extents(sb);
+ ext2fs_mark_super_dirty(fs);
+ extent_fs = 1;
+ } else if (fix_problem(ctx, PR_1_EXTENTS_SET, &pctx)) {
+ clear_inode:
+ e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
+ if (ino == EXT2_BAD_INO)
+ ext2fs_mark_inode_bitmap2(ctx->inode_used_map,
+ ino);
+ /* skip FINISH_INODE_LOOP */
+ continue;
+ }
+ }
+
+ /*
+ * For big-endian machines:
+ * If the inode didn't have the extents flag set when it
+ * was read, then the i_blocks array was swapped. To test
+ * as an extents header, we must swap it back first.
+ * IF we then set the extents flag, the entire i_block
+ * array must be un/re-swapped to make it proper extents data.
+ */
+ if (extent_fs && !(inode->i_flags & EXT4_EXTENTS_FL) &&
+ (inode->i_links_count || (ino == EXT2_BAD_INO) ||
+ (ino == EXT2_ROOT_INO) || (ino == EXT2_JOURNAL_INO)) &&
+ (LINUX_S_ISREG(inode->i_mode) ||
+ LINUX_S_ISDIR(inode->i_mode))) {
+ void *ehp;
+#ifdef WORDS_BIGENDIAN
+ __u32 tmp_block[EXT2_N_BLOCKS];
+
+ for (i = 0; i < EXT2_N_BLOCKS; i++)
+ tmp_block[i] = ext2fs_swab32(inode->i_block[i]);
+ ehp = tmp_block;
+#else
+ ehp = inode->i_block;
+#endif
+ if ((ext2fs_extent_header_verify(ehp,
+ sizeof(inode->i_block)) == 0) &&
+ (fix_problem(ctx, PR_1_UNSET_EXTENT_FL, &pctx))) {
+ inode->i_flags |= EXT4_EXTENTS_FL;
+#ifdef WORDS_BIGENDIAN
+ memcpy(inode->i_block, tmp_block,
+ sizeof(inode->i_block));
+#endif
+ e2fsck_write_inode(ctx, ino, inode, "pass1");
+ failed_csum = 0;
+ }
+ }
+
+ if (ino == EXT2_BAD_INO) {
+ struct process_block_struct pb;
+
+ if ((failed_csum || inode->i_mode || inode->i_uid ||
+ inode->i_gid || inode->i_links_count ||
+ (inode->i_flags & EXT4_INLINE_DATA_FL) ||
+ inode->i_file_acl) &&
+ fix_problem(ctx, PR_1_INVALID_BAD_INODE, &pctx)) {
+ memset(inode, 0, sizeof(struct ext2_inode));
+ e2fsck_write_inode(ctx, ino, inode,
+ "clear bad inode");
+ failed_csum = 0;
+ }
+
+ pctx.errcode = ext2fs_copy_bitmap(ctx->block_found_map,
+ &pb.fs_meta_blocks);
+ if (pctx.errcode) {
+ pctx.num = 4;
+ fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
+ ctx->flags |= E2F_FLAG_ABORT;
+ goto endit;
+ }
+ pb.ino = EXT2_BAD_INO;
+ pb.num_blocks = pb.last_block = 0;
+ pb.last_db_block = -1;
+ pb.num_illegal_blocks = 0;
+ pb.suppress = 0; pb.clear = 0; pb.is_dir = 0;
+ pb.is_reg = 0; pb.fragmented = 0; pb.bbcheck = 0;
+ pb.inode = inode;
+ pb.pctx = &pctx;
+ pb.ctx = ctx;
+ pctx.errcode = ext2fs_block_iterate3(fs, ino, 0,
+ block_buf, process_bad_block, &pb);
+ ext2fs_free_block_bitmap(pb.fs_meta_blocks);
+ if (pctx.errcode) {
+ fix_problem(ctx, PR_1_BLOCK_ITERATE, &pctx);
+ ctx->flags |= E2F_FLAG_ABORT;
+ goto endit;
+ }
+ if (pb.bbcheck)
+ if (!fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK_PROMPT, &pctx)) {
+ ctx->flags |= E2F_FLAG_ABORT;
+ goto endit;
+ }
+ ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
+ clear_problem_context(&pctx);
+ FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
+ continue;
+ } else if (ino == EXT2_ROOT_INO) {
+ /*
+ * Make sure the root inode is a directory; if
+ * not, offer to clear it. It will be
+ * regenerated in pass #3.
+ */
+ if (!LINUX_S_ISDIR(inode->i_mode)) {
+ if (fix_problem(ctx, PR_1_ROOT_NO_DIR, &pctx))
+ goto clear_inode;
+ }
+ /*
+ * If dtime is set, offer to clear it. mke2fs
+ * version 0.2b created filesystems with the
+ * dtime field set for the root and lost+found
+ * directories. We won't worry about
+ * /lost+found, since that can be regenerated
+ * easily. But we will fix the root directory
+ * as a special case.
+ */
+ if (inode->i_dtime && inode->i_links_count) {
+ if (fix_problem(ctx, PR_1_ROOT_DTIME, &pctx)) {
+ inode->i_dtime = 0;
+ e2fsck_write_inode(ctx, ino, inode,
+ "pass1");
+ failed_csum = 0;
+ }
+ }
+ } else if (ino == EXT2_JOURNAL_INO) {
+ ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
+ if (fs->super->s_journal_inum == EXT2_JOURNAL_INO) {
+ if (!LINUX_S_ISREG(inode->i_mode) &&
+ fix_problem(ctx, PR_1_JOURNAL_BAD_MODE,
+ &pctx)) {
+ inode->i_mode = LINUX_S_IFREG;
+ e2fsck_write_inode(ctx, ino, inode,
+ "pass1");
+ failed_csum = 0;
+ }
+ check_blocks(ctx, &pctx, block_buf, NULL);
+ FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
+ continue;
+ }
+ if ((inode->i_links_count ||
+ inode->i_blocks || inode->i_block[0]) &&
+ fix_problem(ctx, PR_1_JOURNAL_INODE_NOT_CLEAR,
+ &pctx)) {
+ memset(inode, 0, inode_size);
+ ext2fs_icount_store(ctx->inode_link_info,
+ ino, 0);
+ e2fsck_write_inode_full(ctx, ino, inode,
+ inode_size, "pass1");
+ failed_csum = 0;
+ }
+ } else if (quota_inum_is_reserved(fs, ino)) {
+ ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
+ if (ext2fs_has_feature_quota(fs->super) &&
+ quota_inum_is_super(fs->super, ino)) {
+ if (!LINUX_S_ISREG(inode->i_mode) &&
+ fix_problem(ctx, PR_1_QUOTA_BAD_MODE,
+ &pctx)) {
+ inode->i_mode = LINUX_S_IFREG;
+ e2fsck_write_inode(ctx, ino, inode,
+ "pass1");
+ failed_csum = 0;
+ }
+ check_blocks(ctx, &pctx, block_buf, NULL);
+ FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
+ continue;
+ }
+ if ((inode->i_links_count ||
+ inode->i_blocks || inode->i_block[0]) &&
+ fix_problem(ctx, PR_1_QUOTA_INODE_NOT_CLEAR,
+ &pctx)) {
+ memset(inode, 0, inode_size);
+ ext2fs_icount_store(ctx->inode_link_info,
+ ino, 0);
+ e2fsck_write_inode_full(ctx, ino, inode,
+ inode_size, "pass1");
+ failed_csum = 0;
+ }
+ } else if (ino == fs->super->s_orphan_file_inum) {
+ ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
+ if (ext2fs_has_feature_orphan_file(fs->super)) {
+ if (!LINUX_S_ISREG(inode->i_mode) &&
+ fix_problem(ctx, PR_1_ORPHAN_FILE_BAD_MODE,
+ &pctx)) {
+ inode->i_mode = LINUX_S_IFREG;
+ e2fsck_write_inode(ctx, ino, inode,
+ "pass1");
+ failed_csum = 0;
+ }
+ check_blocks(ctx, &pctx, block_buf, NULL);
+ FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
+ continue;
+ }
+ if ((inode->i_links_count ||
+ inode->i_blocks || inode->i_block[0]) &&
+ fix_problem(ctx, PR_1_ORPHAN_FILE_NOT_CLEAR,
+ &pctx)) {
+ memset(inode, 0, inode_size);
+ ext2fs_icount_store(ctx->inode_link_info, ino,
+ 0);
+ e2fsck_write_inode_full(ctx, ino, inode,
+ inode_size, "pass1");
+ failed_csum = 0;
+ }
+ } else if (ino < EXT2_FIRST_INODE(fs->super)) {
+ problem_t problem = 0;
+
+ ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
+ if (ino == EXT2_BOOT_LOADER_INO) {
+ if (LINUX_S_ISDIR(inode->i_mode))
+ problem = PR_1_RESERVED_BAD_MODE;
+ } else if (ino == EXT2_RESIZE_INO) {
+ if (inode->i_mode &&
+ !LINUX_S_ISREG(inode->i_mode))
+ problem = PR_1_RESERVED_BAD_MODE;
+ } else {
+ if (inode->i_mode != 0)
+ problem = PR_1_RESERVED_BAD_MODE;
+ }
+ if (problem) {
+ if (fix_problem(ctx, problem, &pctx)) {
+ inode->i_mode = 0;
+ e2fsck_write_inode(ctx, ino, inode,
+ "pass1");
+ failed_csum = 0;
+ }
+ }
+ check_blocks(ctx, &pctx, block_buf, NULL);
+ FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
+ continue;
+ }
+
+ if (!inode->i_links_count) {
+ FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
+ continue;
+ }
+ /*
+ * n.b. 0.3c ext2fs code didn't clear i_links_count for
+ * deleted files. Oops.
+ *
+ * Since all new ext2 implementations get this right,
+ * we now assume that the case of non-zero
+ * i_links_count and non-zero dtime means that we
+ * should keep the file, not delete it.
+ *
+ */
+ if (inode->i_dtime) {
+ if (fix_problem(ctx, PR_1_SET_DTIME, &pctx)) {
+ inode->i_dtime = 0;
+ e2fsck_write_inode(ctx, ino, inode, "pass1");
+ failed_csum = 0;
+ }
+ }
+
+ ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
+ switch (fs->super->s_creator_os) {
+ case EXT2_OS_HURD:
+ frag = inode->osd2.hurd2.h_i_frag;
+ fsize = inode->osd2.hurd2.h_i_fsize;
+ break;
+ default:
+ frag = fsize = 0;
+ }
+
+ if (inode->i_faddr || frag || fsize ||
+ (!ext2fs_has_feature_largedir(fs->super) &&
+ (LINUX_S_ISDIR(inode->i_mode) && inode->i_size_high)))
+ mark_inode_bad(ctx, ino);
+ if ((fs->super->s_creator_os != EXT2_OS_HURD) &&
+ !ext2fs_has_feature_64bit(fs->super) &&
+ inode->osd2.linux2.l_i_file_acl_high != 0)
+ mark_inode_bad(ctx, ino);
+ if ((fs->super->s_creator_os != EXT2_OS_HURD) &&
+ !ext2fs_has_feature_huge_file(fs->super) &&
+ (inode->osd2.linux2.l_i_blocks_hi != 0))
+ mark_inode_bad(ctx, ino);
+ if (inode->i_flags & EXT2_IMAGIC_FL) {
+ if (imagic_fs) {
+ if (!ctx->inode_imagic_map)
+ alloc_imagic_map(ctx);
+ ext2fs_mark_inode_bitmap2(ctx->inode_imagic_map,
+ ino);
+ } else {
+ if (fix_problem(ctx, PR_1_SET_IMAGIC, &pctx)) {
+ inode->i_flags &= ~EXT2_IMAGIC_FL;
+ e2fsck_write_inode(ctx, ino,
+ inode, "pass1");
+ failed_csum = 0;
+ }
+ }
+ }
+
+ check_inode_extra_space(ctx, &pctx, &ea_ibody_quota);
+ check_is_really_dir(ctx, &pctx, block_buf);
+
+ /*
+ * ext2fs_inode_has_valid_blocks2 does not actually look
+ * at i_block[] values, so not endian-sensitive here.
+ */
+ if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL) &&
+ LINUX_S_ISLNK(inode->i_mode) &&
+ !ext2fs_inode_has_valid_blocks2(fs, inode) &&
+ fix_problem(ctx, PR_1_FAST_SYMLINK_EXTENT_FL, &pctx)) {
+ inode->i_flags &= ~EXT4_EXTENTS_FL;
+ e2fsck_write_inode(ctx, ino, inode, "pass1");
+ failed_csum = 0;
+ }
+
+ if ((inode->i_flags & EXT4_ENCRYPT_FL) &&
+ add_encrypted_file(ctx, &pctx) < 0)
+ goto clear_inode;
+
+ if (casefold_fs && inode->i_flags & EXT4_CASEFOLD_FL)
+ ext2fs_mark_inode_bitmap2(ctx->inode_casefold_map, ino);
+
+ if (LINUX_S_ISDIR(inode->i_mode)) {
+ ext2fs_mark_inode_bitmap2(ctx->inode_dir_map, ino);
+ e2fsck_add_dir_info(ctx, ino, 0);
+ ctx->fs_directory_count++;
+ if (inode->i_flags & EXT4_CASEFOLD_FL)
+ add_casefolded_dir(ctx, ino);
+ } else if (LINUX_S_ISREG (inode->i_mode)) {
+ ext2fs_mark_inode_bitmap2(ctx->inode_reg_map, ino);
+ ctx->fs_regular_count++;
+ } else if (LINUX_S_ISCHR (inode->i_mode) &&
+ e2fsck_pass1_check_device_inode(fs, inode)) {
+ check_extents_inlinedata(ctx, &pctx);
+ check_immutable(ctx, &pctx);
+ check_size(ctx, &pctx);
+ ctx->fs_chardev_count++;
+ } else if (LINUX_S_ISBLK (inode->i_mode) &&
+ e2fsck_pass1_check_device_inode(fs, inode)) {
+ check_extents_inlinedata(ctx, &pctx);
+ check_immutable(ctx, &pctx);
+ check_size(ctx, &pctx);
+ ctx->fs_blockdev_count++;
+ } else if (LINUX_S_ISLNK (inode->i_mode) &&
+ e2fsck_pass1_check_symlink(fs, ino, inode,
+ block_buf)) {
+ check_immutable(ctx, &pctx);
+ ctx->fs_symlinks_count++;
+ if (inode->i_flags & EXT4_INLINE_DATA_FL) {
+ FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
+ continue;
+ } else if (ext2fs_is_fast_symlink(inode)) {
+ ctx->fs_fast_symlinks_count++;
+ check_blocks(ctx, &pctx, block_buf,
+ &ea_ibody_quota);
+ FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
+ continue;
+ }
+ }
+ else if (LINUX_S_ISFIFO (inode->i_mode) &&
+ e2fsck_pass1_check_device_inode(fs, inode)) {
+ check_extents_inlinedata(ctx, &pctx);
+ check_immutable(ctx, &pctx);
+ check_size(ctx, &pctx);
+ ctx->fs_fifo_count++;
+ } else if ((LINUX_S_ISSOCK (inode->i_mode)) &&
+ e2fsck_pass1_check_device_inode(fs, inode)) {
+ check_extents_inlinedata(ctx, &pctx);
+ check_immutable(ctx, &pctx);
+ check_size(ctx, &pctx);
+ ctx->fs_sockets_count++;
+ } else
+ mark_inode_bad(ctx, ino);
+ if (!(inode->i_flags & EXT4_EXTENTS_FL) &&
+ !(inode->i_flags & EXT4_INLINE_DATA_FL)) {
+ if (inode->i_block[EXT2_IND_BLOCK])
+ ctx->fs_ind_count++;
+ if (inode->i_block[EXT2_DIND_BLOCK])
+ ctx->fs_dind_count++;
+ if (inode->i_block[EXT2_TIND_BLOCK])
+ ctx->fs_tind_count++;
+ }
+ if (!(inode->i_flags & EXT4_EXTENTS_FL) &&
+ !(inode->i_flags & EXT4_INLINE_DATA_FL) &&
+ (inode->i_block[EXT2_IND_BLOCK] ||
+ inode->i_block[EXT2_DIND_BLOCK] ||
+ inode->i_block[EXT2_TIND_BLOCK] ||
+ ext2fs_file_acl_block(fs, inode))) {
+ struct process_inode_block *itp;
+
+ itp = &inodes_to_process[process_inode_count];
+ itp->ino = ino;
+ itp->ea_ibody_quota = ea_ibody_quota;
+ if (inode_size < sizeof(struct ext2_inode_large))
+ memcpy(&itp->inode, inode, inode_size);
+ else
+ memcpy(&itp->inode, inode, sizeof(itp->inode));
+ process_inode_count++;
+ } else
+ check_blocks(ctx, &pctx, block_buf, &ea_ibody_quota);
+
+ FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
+
+ if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
+ goto endit;
+
+ if (process_inode_count >= ctx->process_inode_size) {
+ process_inodes(ctx, block_buf);
+
+ if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
+ goto endit;
+ }
+ }
+ process_inodes(ctx, block_buf);
+ ext2fs_close_inode_scan(scan);
+ scan = NULL;
+
+ reserve_block_for_root_repair(ctx);
+ reserve_block_for_lnf_repair(ctx);
+
+ /*
+ * If any extended attribute blocks' reference counts need to
+ * be adjusted, either up (ctx->refcount_extra), or down
+ * (ctx->refcount), then fix them.
+ */
+ if (ctx->refcount) {
+ adjust_extattr_refcount(ctx, ctx->refcount, block_buf, -1);
+ ea_refcount_free(ctx->refcount);
+ ctx->refcount = 0;
+ }
+ if (ctx->refcount_extra) {
+ adjust_extattr_refcount(ctx, ctx->refcount_extra,
+ block_buf, +1);
+ ea_refcount_free(ctx->refcount_extra);
+ ctx->refcount_extra = 0;
+ }
+
+ if (ctx->ea_block_quota_blocks) {
+ ea_refcount_free(ctx->ea_block_quota_blocks);
+ ctx->ea_block_quota_blocks = 0;
+ }
+
+ if (ctx->ea_block_quota_inodes) {
+ ea_refcount_free(ctx->ea_block_quota_inodes);
+ ctx->ea_block_quota_inodes = 0;
+ }
+
+ if (ctx->invalid_bitmaps)
+ handle_fs_bad_blocks(ctx);
+
+ /* We don't need the block_ea_map any more */
+ if (ctx->block_ea_map) {
+ ext2fs_free_block_bitmap(ctx->block_ea_map);
+ ctx->block_ea_map = 0;
+ }
+
+ /* We don't need the encryption policy => ID map any more */
+ destroy_encryption_policy_map(ctx);
+
+ if (ctx->flags & E2F_FLAG_RESIZE_INODE) {
+ clear_problem_context(&pctx);
+ pctx.errcode = ext2fs_create_resize_inode(fs);
+ if (pctx.errcode) {
+ if (!fix_problem(ctx, PR_1_RESIZE_INODE_CREATE,
+ &pctx)) {
+ ctx->flags |= E2F_FLAG_ABORT;
+ goto endit;
+ }
+ pctx.errcode = 0;
+ }
+ if (!pctx.errcode) {
+ e2fsck_read_inode(ctx, EXT2_RESIZE_INO, inode,
+ "recreate inode");
+ inode->i_mtime = ctx->now;
+ e2fsck_write_inode(ctx, EXT2_RESIZE_INO, inode,
+ "recreate inode");
+ }
+ ctx->flags &= ~E2F_FLAG_RESIZE_INODE;
+ }
+
+ if (ctx->flags & E2F_FLAG_RESTART) {
+ /*
+ * Only the master copy of the superblock and block
+ * group descriptors are going to be written during a
+ * restart, so set the superblock to be used to be the
+ * master superblock.
+ */
+ ctx->use_superblock = 0;
+ goto endit;
+ }
+
+ if (ctx->large_dirs && !ext2fs_has_feature_largedir(fs->super)) {
+ if (fix_problem(ctx, PR_2_FEATURE_LARGE_DIRS, &pctx)) {
+ ext2fs_set_feature_largedir(fs->super);
+ fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
+ ext2fs_mark_super_dirty(fs);
+ }
+ if (fs->super->s_rev_level == EXT2_GOOD_OLD_REV &&
+ fix_problem(ctx, PR_1_FS_REV_LEVEL, &pctx)) {
+ ext2fs_update_dynamic_rev(fs);
+ ext2fs_mark_super_dirty(fs);
+ }
+ }
+
+ if (ctx->block_dup_map) {
+ if (ctx->options & E2F_OPT_PREEN) {
+ clear_problem_context(&pctx);
+ fix_problem(ctx, PR_1_DUP_BLOCKS_PREENSTOP, &pctx);
+ }
+ e2fsck_pass1_dupblocks(ctx, block_buf);
+ }
+ ctx->flags |= E2F_FLAG_ALLOC_OK;
+endit:
+ e2fsck_use_inode_shortcuts(ctx, 0);
+ ext2fs_free_mem(&inodes_to_process);
+ inodes_to_process = 0;
+
+ if (scan)
+ ext2fs_close_inode_scan(scan);
+ if (block_buf)
+ ext2fs_free_mem(&block_buf);
+ if (inode)
+ ext2fs_free_mem(&inode);
+
+ /*
+ * The l+f inode may have been cleared, so zap it now and
+ * later passes will recalculate it if necessary
+ */
+ ctx->lost_and_found = 0;
+
+ if ((ctx->flags & E2F_FLAG_SIGNAL_MASK) == 0)
+ print_resource_track(ctx, _("Pass 1"), &rtrack, ctx->fs->io);
+ else
+ ctx->invalid_bitmaps++;
+}
+#undef FINISH_INODE_LOOP
+
+/*
+ * When the inode_scan routines call this callback at the end of the
+ * glock group, call process_inodes.
+ */
+static errcode_t scan_callback(ext2_filsys fs,
+ ext2_inode_scan scan EXT2FS_ATTR((unused)),
+ dgrp_t group, void * priv_data)
+{
+ struct scan_callback_struct *scan_struct;
+ e2fsck_t ctx;
+
+ scan_struct = (struct scan_callback_struct *) priv_data;
+ ctx = scan_struct->ctx;
+
+ process_inodes((e2fsck_t) fs->priv_data, scan_struct->block_buf);
+
+ if (ctx->progress)
+ if ((ctx->progress)(ctx, 1, group+1,
+ ctx->fs->group_desc_count))
+ return EXT2_ET_CANCEL_REQUESTED;
+
+ return 0;
+}
+
+/*
+ * Process the inodes in the "inodes to process" list.
+ */
+static void process_inodes(e2fsck_t ctx, char *block_buf)
+{
+ int i;
+ struct ext2_inode *old_stashed_inode;
+ ext2_ino_t old_stashed_ino;
+ const char *old_operation;
+ char buf[80];
+ struct problem_context pctx;
+
+#if 0
+ printf("begin process_inodes: ");
+#endif
+ if (process_inode_count == 0)
+ return;
+ old_operation = ehandler_operation(0);
+ old_stashed_inode = ctx->stashed_inode;
+ old_stashed_ino = ctx->stashed_ino;
+ qsort(inodes_to_process, process_inode_count,
+ sizeof(struct process_inode_block), process_inode_cmp);
+ clear_problem_context(&pctx);
+ for (i=0; i < process_inode_count; i++) {
+ pctx.inode = ctx->stashed_inode =
+ (struct ext2_inode *) &inodes_to_process[i].inode;
+ pctx.ino = ctx->stashed_ino = inodes_to_process[i].ino;
+
+#if 0
+ printf("%u ", pctx.ino);
+#endif
+ sprintf(buf, _("reading indirect blocks of inode %u"),
+ pctx.ino);
+ ehandler_operation(buf);
+ check_blocks(ctx, &pctx, block_buf,
+ &inodes_to_process[i].ea_ibody_quota);
+ if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
+ break;
+ }
+ ctx->stashed_inode = old_stashed_inode;
+ ctx->stashed_ino = old_stashed_ino;
+ process_inode_count = 0;
+#if 0
+ printf("end process inodes\n");
+#endif
+ ehandler_operation(old_operation);
+}
+
+static EXT2_QSORT_TYPE process_inode_cmp(const void *a, const void *b)
+{
+ const struct process_inode_block *ib_a =
+ (const struct process_inode_block *) a;
+ const struct process_inode_block *ib_b =
+ (const struct process_inode_block *) b;
+ int ret;
+
+ ret = (ib_a->inode.i_block[EXT2_IND_BLOCK] -
+ ib_b->inode.i_block[EXT2_IND_BLOCK]);
+ if (ret == 0)
+ /*
+ * We only call process_inodes() for non-extent
+ * inodes, so it's OK to pass NULL to
+ * ext2fs_file_acl_block() here.
+ */
+ ret = ext2fs_file_acl_block(0, ext2fs_const_inode(&ib_a->inode)) -
+ ext2fs_file_acl_block(0, ext2fs_const_inode(&ib_b->inode));
+ if (ret == 0)
+ ret = ib_a->ino - ib_b->ino;
+ return ret;
+}
+
+/*
+ * Mark an inode as being bad in some what
+ */
+static void mark_inode_bad(e2fsck_t ctx, ext2_ino_t ino)
+{
+ struct problem_context pctx;
+
+ if (!ctx->inode_bad_map) {
+ clear_problem_context(&pctx);
+
+ pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs,
+ _("bad inode map"), EXT2FS_BMAP64_RBTREE,
+ "inode_bad_map", &ctx->inode_bad_map);
+ if (pctx.errcode) {
+ pctx.num = 3;
+ fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
+ /* Should never get here */
+ ctx->flags |= E2F_FLAG_ABORT;
+ return;
+ }
+ }
+ ext2fs_mark_inode_bitmap2(ctx->inode_bad_map, ino);
+}
+
+static void add_casefolded_dir(e2fsck_t ctx, ext2_ino_t ino)
+{
+ struct problem_context pctx;
+
+ if (!ctx->casefolded_dirs) {
+ pctx.errcode = ext2fs_u32_list_create(&ctx->casefolded_dirs, 0);
+ if (pctx.errcode)
+ goto error;
+ }
+ pctx.errcode = ext2fs_u32_list_add(ctx->casefolded_dirs, ino);
+ if (pctx.errcode == 0)
+ return;
+error:
+ fix_problem(ctx, PR_1_ALLOCATE_CASEFOLDED_DIRLIST, &pctx);
+ /* Should never get here */
+ ctx->flags |= E2F_FLAG_ABORT;
+}
+
+/*
+ * This procedure will allocate the inode "bb" (badblock) map table
+ */
+static void alloc_bb_map(e2fsck_t ctx)
+{
+ struct problem_context pctx;
+
+ clear_problem_context(&pctx);
+ pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs,
+ _("inode in bad block map"), EXT2FS_BMAP64_RBTREE,
+ "inode_bb_map", &ctx->inode_bb_map);
+ if (pctx.errcode) {
+ pctx.num = 4;
+ fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
+ /* Should never get here */
+ ctx->flags |= E2F_FLAG_ABORT;
+ return;
+ }
+}
+
+/*
+ * This procedure will allocate the inode imagic table
+ */
+static void alloc_imagic_map(e2fsck_t ctx)
+{
+ struct problem_context pctx;
+
+ clear_problem_context(&pctx);
+ pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs,
+ _("imagic inode map"), EXT2FS_BMAP64_RBTREE,
+ "inode_imagic_map", &ctx->inode_imagic_map);
+ if (pctx.errcode) {
+ pctx.num = 5;
+ fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
+ /* Should never get here */
+ ctx->flags |= E2F_FLAG_ABORT;
+ return;
+ }
+}
+
+/*
+ * Marks a block as in use, setting the dup_map if it's been set
+ * already. Called by process_block and process_bad_block.
+ *
+ * WARNING: Assumes checks have already been done to make sure block
+ * is valid. This is true in both process_block and process_bad_block.
+ */
+static _INLINE_ void mark_block_used(e2fsck_t ctx, blk64_t block)
+{
+ struct problem_context pctx;
+
+ clear_problem_context(&pctx);
+
+ if (ext2fs_fast_test_block_bitmap2(ctx->block_found_map, block)) {
+ if (ext2fs_has_feature_shared_blocks(ctx->fs->super) &&
+ !(ctx->options & E2F_OPT_UNSHARE_BLOCKS)) {
+ return;
+ }
+ if (!ctx->block_dup_map) {
+ pctx.errcode = e2fsck_allocate_block_bitmap(ctx->fs,
+ _("multiply claimed block map"),
+ EXT2FS_BMAP64_RBTREE, "block_dup_map",
+ &ctx->block_dup_map);
+ if (pctx.errcode) {
+ pctx.num = 3;
+ fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR,
+ &pctx);
+ /* Should never get here */
+ ctx->flags |= E2F_FLAG_ABORT;
+ return;
+ }
+ }
+ ext2fs_fast_mark_block_bitmap2(ctx->block_dup_map, block);
+ } else {
+ ext2fs_fast_mark_block_bitmap2(ctx->block_found_map, block);
+ }
+}
+
+/*
+ * When cluster size is greater than one block, it is caller's responsibility
+ * to make sure block parameter starts at a cluster boundary.
+ */
+static _INLINE_ void mark_blocks_used(e2fsck_t ctx, blk64_t block,
+ unsigned int num)
+{
+ if (ext2fs_test_block_bitmap_range2(ctx->block_found_map, block, num))
+ ext2fs_mark_block_bitmap_range2(ctx->block_found_map, block, num);
+ else {
+ unsigned int i;
+
+ for (i = 0; i < num; i += EXT2FS_CLUSTER_RATIO(ctx->fs))
+ mark_block_used(ctx, block + i);
+ }
+}
+
+/*
+ * Adjust the extended attribute block's reference counts at the end
+ * of pass 1, either by subtracting out references for EA blocks that
+ * are still referenced in ctx->refcount, or by adding references for
+ * EA blocks that had extra references as accounted for in
+ * ctx->refcount_extra.
+ */
+static void adjust_extattr_refcount(e2fsck_t ctx, ext2_refcount_t refcount,
+ char *block_buf, int adjust_sign)
+{
+ struct ext2_ext_attr_header *header;
+ struct problem_context pctx;
+ ext2_filsys fs = ctx->fs;
+ blk64_t blk;
+ __u32 should_be;
+ ea_value_t count;
+
+ clear_problem_context(&pctx);
+
+ ea_refcount_intr_begin(refcount);
+ while (1) {
+ if ((blk = ea_refcount_intr_next(refcount, &count)) == 0)
+ break;
+ pctx.blk = blk;
+ pctx.errcode = ext2fs_read_ext_attr3(fs, blk, block_buf,
+ pctx.ino);
+ if (pctx.errcode) {
+ fix_problem(ctx, PR_1_EXTATTR_READ_ABORT, &pctx);
+ return;
+ }
+ header = (struct ext2_ext_attr_header *) block_buf;
+ pctx.blkcount = header->h_refcount;
+ should_be = header->h_refcount + adjust_sign * (int)count;
+ pctx.num = should_be;
+ if (fix_problem(ctx, PR_1_EXTATTR_REFCOUNT, &pctx)) {
+ header->h_refcount = should_be;
+ pctx.errcode = ext2fs_write_ext_attr3(fs, blk,
+ block_buf,
+ pctx.ino);
+ if (pctx.errcode) {
+ fix_problem(ctx, PR_1_EXTATTR_WRITE_ABORT,
+ &pctx);
+ continue;
+ }
+ }
+ }
+}
+
+/*
+ * Handle processing the extended attribute blocks
+ */
+static int check_ext_attr(e2fsck_t ctx, struct problem_context *pctx,
+ char *block_buf, struct ea_quota *ea_block_quota)
+{
+ ext2_filsys fs = ctx->fs;
+ ext2_ino_t ino = pctx->ino;
+ struct ext2_inode *inode = pctx->inode;
+ blk64_t blk;
+ char * end;
+ struct ext2_ext_attr_header *header;
+ struct ext2_ext_attr_entry *first, *entry;
+ blk64_t quota_blocks = EXT2FS_C2B(fs, 1);
+ __u64 quota_inodes = 0;
+ region_t region = 0;
+ int failed_csum = 0;
+
+ ea_block_quota->blocks = 0;
+ ea_block_quota->inodes = 0;
+
+ blk = ext2fs_file_acl_block(fs, inode);
+ if (blk == 0)
+ return 0;
+
+ /*
+ * If the Extended attribute flag isn't set, then a non-zero
+ * file acl means that the inode is corrupted.
+ *
+ * Or if the extended attribute block is an invalid block,
+ * then the inode is also corrupted.
+ */
+ if (!ext2fs_has_feature_xattr(fs->super) ||
+ (blk < fs->super->s_first_data_block) ||
+ (blk >= ext2fs_blocks_count(fs->super))) {
+ mark_inode_bad(ctx, ino);
+ return 0;
+ }
+
+ /* If ea bitmap hasn't been allocated, create it */
+ if (!ctx->block_ea_map) {
+ pctx->errcode = e2fsck_allocate_block_bitmap(fs,
+ _("ext attr block map"),
+ EXT2FS_BMAP64_RBTREE, "block_ea_map",
+ &ctx->block_ea_map);
+ if (pctx->errcode) {
+ pctx->num = 2;
+ fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, pctx);
+ ctx->flags |= E2F_FLAG_ABORT;
+ return 0;
+ }
+ }
+
+ /* Create the EA refcount structure if necessary */
+ if (!ctx->refcount) {
+ pctx->errcode = ea_refcount_create(0, &ctx->refcount);
+ if (pctx->errcode) {
+ pctx->num = 1;
+ fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
+ ctx->flags |= E2F_FLAG_ABORT;
+ return 0;
+ }
+ }
+
+#if 0
+ /* Debugging text */
+ printf("Inode %u has EA block %u\n", ino, blk);
+#endif
+
+ /* Have we seen this EA block before? */
+ if (ext2fs_fast_test_block_bitmap2(ctx->block_ea_map, blk)) {
+ ea_block_quota->blocks = EXT2FS_C2B(fs, 1);
+ ea_block_quota->inodes = 0;
+
+ if (ctx->ea_block_quota_blocks) {
+ ea_refcount_fetch(ctx->ea_block_quota_blocks, blk,
+ &quota_blocks);
+ if (quota_blocks)
+ ea_block_quota->blocks = quota_blocks;
+ }
+
+ if (ctx->ea_block_quota_inodes)
+ ea_refcount_fetch(ctx->ea_block_quota_inodes, blk,
+ &ea_block_quota->inodes);
+
+ if (ea_refcount_decrement(ctx->refcount, blk, 0) == 0)
+ return 1;
+ /* Ooops, this EA was referenced more than it stated */
+ if (!ctx->refcount_extra) {
+ pctx->errcode = ea_refcount_create(0,
+ &ctx->refcount_extra);
+ if (pctx->errcode) {
+ pctx->num = 2;
+ fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
+ ctx->flags |= E2F_FLAG_ABORT;
+ return 0;
+ }
+ }
+ ea_refcount_increment(ctx->refcount_extra, blk, 0);
+ return 1;
+ }
+
+ /*
+ * OK, we haven't seen this EA block yet. So we need to
+ * validate it
+ */
+ pctx->blk = blk;
+ pctx->errcode = ext2fs_read_ext_attr3(fs, blk, block_buf, pctx->ino);
+ if (pctx->errcode == EXT2_ET_EXT_ATTR_CSUM_INVALID) {
+ pctx->errcode = 0;
+ failed_csum = 1;
+ } else if (pctx->errcode == EXT2_ET_BAD_EA_HEADER)
+ pctx->errcode = 0;
+
+ if (pctx->errcode &&
+ fix_problem(ctx, PR_1_READ_EA_BLOCK, pctx)) {
+ pctx->errcode = 0;
+ goto clear_extattr;
+ }
+ header = (struct ext2_ext_attr_header *) block_buf;
+ pctx->blk = ext2fs_file_acl_block(fs, inode);
+ if (((ctx->ext_attr_ver == 1) &&
+ (header->h_magic != EXT2_EXT_ATTR_MAGIC_v1)) ||
+ ((ctx->ext_attr_ver == 2) &&
+ (header->h_magic != EXT2_EXT_ATTR_MAGIC))) {
+ if (fix_problem(ctx, PR_1_BAD_EA_BLOCK, pctx))
+ goto clear_extattr;
+ }
+
+ if (header->h_blocks != 1) {
+ if (fix_problem(ctx, PR_1_EA_MULTI_BLOCK, pctx))
+ goto clear_extattr;
+ }
+
+ if (pctx->errcode && fix_problem(ctx, PR_1_READ_EA_BLOCK, pctx))
+ goto clear_extattr;
+
+ region = region_create(0, fs->blocksize);
+ if (!region) {
+ fix_problem(ctx, PR_1_EA_ALLOC_REGION_ABORT, pctx);
+ ctx->flags |= E2F_FLAG_ABORT;
+ return 0;
+ }
+ if (region_allocate(region, 0, sizeof(struct ext2_ext_attr_header))) {
+ if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
+ goto clear_extattr;
+ }
+
+ first = (struct ext2_ext_attr_entry *)(header+1);
+ end = block_buf + fs->blocksize;
+ entry = first;
+ while ((char *)entry < end && *(__u32 *)entry) {
+ __u32 hash;
+
+ if (region_allocate(region, (char *)entry - (char *)header,
+ EXT2_EXT_ATTR_LEN(entry->e_name_len))) {
+ if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
+ goto clear_extattr;
+ break;
+ }
+ if ((ctx->ext_attr_ver == 1 &&
+ (entry->e_name_len == 0 || entry->e_name_index != 0)) ||
+ (ctx->ext_attr_ver == 2 &&
+ entry->e_name_index == 0)) {
+ if (fix_problem(ctx, PR_1_EA_BAD_NAME, pctx))
+ goto clear_extattr;
+ break;
+ }
+ if (entry->e_value_inum == 0) {
+ if (entry->e_value_size > EXT2_XATTR_SIZE_MAX ||
+ (entry->e_value_offs + entry->e_value_size >
+ fs->blocksize)) {
+ if (fix_problem(ctx, PR_1_EA_BAD_VALUE, pctx))
+ goto clear_extattr;
+ break;
+ }
+ if (entry->e_value_size &&
+ region_allocate(region, entry->e_value_offs,
+ EXT2_EXT_ATTR_SIZE(entry->e_value_size))) {
+ if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION,
+ pctx))
+ goto clear_extattr;
+ }
+
+ hash = ext2fs_ext_attr_hash_entry(entry, block_buf +
+ entry->e_value_offs);
+ if (entry->e_hash != hash)
+ hash = ext2fs_ext_attr_hash_entry_signed(entry,
+ block_buf + entry->e_value_offs);
+
+ if (entry->e_hash != hash) {
+ pctx->num = entry->e_hash;
+ if (fix_problem(ctx, PR_1_ATTR_HASH, pctx))
+ goto clear_extattr;
+ entry->e_hash = hash;
+ }
+ } else {
+ problem_t problem;
+ blk64_t entry_quota_blocks;
+
+ problem = check_large_ea_inode(ctx, entry, pctx,
+ &entry_quota_blocks);
+ if (problem && fix_problem(ctx, problem, pctx))
+ goto clear_extattr;
+
+ quota_blocks += entry_quota_blocks;
+ quota_inodes++;
+ }
+
+ entry = EXT2_EXT_ATTR_NEXT(entry);
+ }
+ if (region_allocate(region, (char *)entry - (char *)header, 4)) {
+ if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
+ goto clear_extattr;
+ }
+ region_free(region);
+
+ /*
+ * We only get here if there was no other errors that were fixed.
+ * If there was a checksum fail, ask to correct it.
+ */
+ if (failed_csum &&
+ fix_problem(ctx, PR_1_EA_BLOCK_ONLY_CSUM_INVALID, pctx)) {
+ pctx->errcode = ext2fs_write_ext_attr3(fs, blk, block_buf,
+ pctx->ino);
+ if (pctx->errcode)
+ return 0;
+ }
+
+ if (quota_blocks != EXT2FS_C2B(fs, 1U)) {
+ if (!ctx->ea_block_quota_blocks) {
+ pctx->errcode = ea_refcount_create(0,
+ &ctx->ea_block_quota_blocks);
+ if (pctx->errcode) {
+ pctx->num = 3;
+ goto refcount_fail;
+ }
+ }
+ ea_refcount_store(ctx->ea_block_quota_blocks, blk,
+ quota_blocks);
+ }
+
+ if (quota_inodes) {
+ if (!ctx->ea_block_quota_inodes) {
+ pctx->errcode = ea_refcount_create(0,
+ &ctx->ea_block_quota_inodes);
+ if (pctx->errcode) {
+ pctx->num = 4;
+refcount_fail:
+ fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
+ ctx->flags |= E2F_FLAG_ABORT;
+ return 0;
+ }
+ }
+
+ ea_refcount_store(ctx->ea_block_quota_inodes, blk,
+ quota_inodes);
+ }
+ ea_block_quota->blocks = quota_blocks;
+ ea_block_quota->inodes = quota_inodes;
+
+ inc_ea_inode_refs(ctx, pctx, first, end);
+ ea_refcount_store(ctx->refcount, blk, header->h_refcount - 1);
+ mark_block_used(ctx, blk);
+ ext2fs_fast_mark_block_bitmap2(ctx->block_ea_map, blk);
+ return 1;
+
+clear_extattr:
+ if (region)
+ region_free(region);
+ ext2fs_file_acl_block_set(fs, inode, 0);
+ e2fsck_write_inode(ctx, ino, inode, "check_ext_attr");
+ return 0;
+}
+
+/* Returns 1 if bad htree, 0 if OK */
+static int handle_htree(e2fsck_t ctx, struct problem_context *pctx,
+ ext2_ino_t ino, struct ext2_inode *inode,
+ char *block_buf)
+{
+ struct ext2_dx_root_info *root;
+ ext2_filsys fs = ctx->fs;
+ errcode_t retval;
+ blk64_t blk;
+
+ if ((!LINUX_S_ISDIR(inode->i_mode) &&
+ fix_problem(ctx, PR_1_HTREE_NODIR, pctx)) ||
+ (!ext2fs_has_feature_dir_index(fs->super) &&
+ fix_problem(ctx, PR_1_HTREE_SET, pctx)))
+ return 1;
+
+ pctx->errcode = ext2fs_bmap2(fs, ino, inode, 0, 0, 0, 0, &blk);
+
+ if ((pctx->errcode) ||
+ (blk == 0) ||
+ (blk < fs->super->s_first_data_block) ||
+ (blk >= ext2fs_blocks_count(fs->super))) {
+ if (fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
+ return 1;
+ else
+ return 0;
+ }
+
+ retval = io_channel_read_blk64(fs->io, blk, 1, block_buf);
+ if (retval && fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
+ return 1;
+
+ /* XXX should check that beginning matches a directory */
+ root = (struct ext2_dx_root_info *) (block_buf + 24);
+
+ if ((root->reserved_zero || root->info_length < 8) &&
+ fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
+ return 1;
+
+ pctx->num = root->hash_version;
+ if ((root->hash_version != EXT2_HASH_LEGACY) &&
+ (root->hash_version != EXT2_HASH_HALF_MD4) &&
+ (root->hash_version != EXT2_HASH_TEA) &&
+ (root->hash_version != EXT2_HASH_SIPHASH) &&
+ fix_problem(ctx, PR_1_HTREE_HASHV, pctx))
+ return 1;
+
+ if (ext4_hash_in_dirent(inode)) {
+ if (root->hash_version != EXT2_HASH_SIPHASH &&
+ fix_problem(ctx, PR_1_HTREE_NEEDS_SIPHASH, pctx))
+ return 1;
+ } else {
+ if (root->hash_version == EXT2_HASH_SIPHASH &&
+ fix_problem(ctx, PR_1_HTREE_CANNOT_SIPHASH, pctx))
+ return 1;
+ }
+
+ if ((root->unused_flags & EXT2_HASH_FLAG_INCOMPAT) &&
+ fix_problem(ctx, PR_1_HTREE_INCOMPAT, pctx))
+ return 1;
+
+ pctx->num = root->indirect_levels;
+ /* if htree level is clearly too high, consider it to be broken */
+ if (root->indirect_levels > EXT4_HTREE_LEVEL &&
+ fix_problem(ctx, PR_1_HTREE_DEPTH, pctx))
+ return 1;
+
+ /* if level is only maybe too high, LARGE_DIR feature could be unset */
+ if (root->indirect_levels > ext2_dir_htree_level(fs) &&
+ !ext2fs_has_feature_largedir(fs->super)) {
+ int blockbits = EXT2_BLOCK_SIZE_BITS(fs->super) + 10;
+ unsigned idx_pb = 1 << (blockbits - 3);
+
+ /* compare inode size/blocks vs. max-sized 2-level htree */
+ if (EXT2_I_SIZE(pctx->inode) <
+ (idx_pb - 1) * (idx_pb - 2) << blockbits &&
+ pctx->inode->i_blocks <
+ (idx_pb - 1) * (idx_pb - 2) << (blockbits - 9) &&
+ fix_problem(ctx, PR_1_HTREE_DEPTH, pctx))
+ return 1;
+ }
+
+ if (root->indirect_levels > EXT4_HTREE_LEVEL_COMPAT ||
+ ext2fs_needs_large_file_feature(EXT2_I_SIZE(inode)))
+ ctx->large_dirs++;
+
+ return 0;
+}
+
+void e2fsck_clear_inode(e2fsck_t ctx, ext2_ino_t ino,
+ struct ext2_inode *inode, int restart_flag,
+ const char *source)
+{
+ inode->i_flags = 0;
+ inode->i_links_count = 0;
+ ext2fs_icount_store(ctx->inode_link_info, ino, 0);
+ inode->i_dtime = ctx->now;
+
+ /*
+ * If a special inode has such rotten block mappings that we
+ * want to clear the whole inode, be sure to actually zap
+ * the block maps because i_links_count isn't checked for
+ * special inodes, and we'll end up right back here the next
+ * time we run fsck.
+ */
+ if (ino < EXT2_FIRST_INODE(ctx->fs->super))
+ memset(inode->i_block, 0, sizeof(inode->i_block));
+
+ ext2fs_unmark_inode_bitmap2(ctx->inode_dir_map, ino);
+ ext2fs_unmark_inode_bitmap2(ctx->inode_used_map, ino);
+ if (ctx->inode_reg_map)
+ ext2fs_unmark_inode_bitmap2(ctx->inode_reg_map, ino);
+ if (ctx->inode_bad_map)
+ ext2fs_unmark_inode_bitmap2(ctx->inode_bad_map, ino);
+
+ /*
+ * If the inode was partially accounted for before processing
+ * was aborted, we need to restart the pass 1 scan.
+ */
+ ctx->flags |= restart_flag;
+
+ if (ino == EXT2_BAD_INO)
+ memset(inode, 0, sizeof(struct ext2_inode));
+
+ e2fsck_write_inode(ctx, ino, inode, source);
+}
+
+/*
+ * Use the multiple-blocks reclamation code to fix alignment problems in
+ * a bigalloc filesystem. We want a logical cluster to map to *only* one
+ * physical cluster, and we want the block offsets within that cluster to
+ * line up.
+ */
+static int has_unaligned_cluster_map(e2fsck_t ctx,
+ blk64_t last_pblk, blk64_t last_lblk,
+ blk64_t pblk, blk64_t lblk)
+{
+ blk64_t cluster_mask;
+
+ if (!ctx->fs->cluster_ratio_bits)
+ return 0;
+ cluster_mask = EXT2FS_CLUSTER_MASK(ctx->fs);
+
+ /*
+ * If the block in the logical cluster doesn't align with the block in
+ * the physical cluster...
+ */
+ if ((lblk & cluster_mask) != (pblk & cluster_mask))
+ return 1;
+
+ /*
+ * If we cross a physical cluster boundary within a logical cluster...
+ */
+ if (last_pblk && (lblk & cluster_mask) != 0 &&
+ EXT2FS_B2C(ctx->fs, lblk) == EXT2FS_B2C(ctx->fs, last_lblk) &&
+ EXT2FS_B2C(ctx->fs, pblk) != EXT2FS_B2C(ctx->fs, last_pblk))
+ return 1;
+
+ return 0;
+}
+
+static void scan_extent_node(e2fsck_t ctx, struct problem_context *pctx,
+ struct process_block_struct *pb,
+ blk64_t start_block, blk64_t end_block,
+ blk64_t eof_block,
+ ext2_extent_handle_t ehandle,
+ int try_repairs)
+{
+ struct ext2fs_extent extent;
+ blk64_t blk, last_lblk;
+ unsigned int i, n;
+ int is_dir, is_leaf;
+ problem_t problem;
+ struct ext2_extent_info info;
+ int failed_csum = 0;
+
+ if (pctx->errcode == EXT2_ET_EXTENT_CSUM_INVALID)
+ failed_csum = 1;
+
+ pctx->errcode = ext2fs_extent_get_info(ehandle, &info);
+ if (pctx->errcode)
+ return;
+ if (!(ctx->options & E2F_OPT_FIXES_ONLY) &&
+ !pb->eti.force_rebuild &&
+ info.curr_level < MAX_EXTENT_DEPTH_COUNT) {
+ struct extent_tree_level *etl;
+
+ etl = pb->eti.ext_info + info.curr_level;
+ etl->num_extents += info.num_entries;
+ etl->max_extents += info.max_entries;
+ /*
+ * Implementation wart: Splitting extent blocks when appending
+ * will leave the old block with one free entry. Therefore
+ * unless the node is totally full, pretend that a non-root
+ * extent block can hold one fewer entry than it actually does,
+ * so that we don't repeatedly rebuild the extent tree.
+ */
+ if (info.curr_level && info.num_entries < info.max_entries)
+ etl->max_extents--;
+ }
+
+ pctx->errcode = ext2fs_extent_get(ehandle, EXT2_EXTENT_FIRST_SIB,
+ &extent);
+ while ((pctx->errcode == 0 ||
+ pctx->errcode == EXT2_ET_EXTENT_CSUM_INVALID) &&
+ info.num_entries-- > 0) {
+ is_leaf = extent.e_flags & EXT2_EXTENT_FLAGS_LEAF;
+ is_dir = LINUX_S_ISDIR(pctx->inode->i_mode);
+ last_lblk = extent.e_lblk + extent.e_len - 1;
+
+ problem = 0;
+ pctx->blk = extent.e_pblk;
+ pctx->blk2 = extent.e_lblk;
+ pctx->num = extent.e_len;
+ pctx->blkcount = extent.e_lblk + extent.e_len;
+
+ if (extent.e_pblk == 0 ||
+ extent.e_pblk < ctx->fs->super->s_first_data_block ||
+ extent.e_pblk >= ext2fs_blocks_count(ctx->fs->super))
+ problem = PR_1_EXTENT_BAD_START_BLK;
+ else if (extent.e_lblk < start_block)
+ problem = PR_1_OUT_OF_ORDER_EXTENTS;
+ else if ((end_block && last_lblk > end_block) &&
+ !(last_lblk > eof_block &&
+ ((extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT) ||
+ (pctx->inode->i_flags & EXT4_VERITY_FL))))
+ problem = PR_1_EXTENT_END_OUT_OF_BOUNDS;
+ else if (is_leaf && extent.e_len == 0)
+ problem = PR_1_EXTENT_LENGTH_ZERO;
+ else if (is_leaf &&
+ (extent.e_pblk + extent.e_len) >
+ ext2fs_blocks_count(ctx->fs->super))
+ problem = PR_1_EXTENT_ENDS_BEYOND;
+ else if (is_leaf && is_dir && !pctx->inode->i_size_high &&
+ !ext2fs_has_feature_largedir(ctx->fs->super) &&
+ ((extent.e_lblk + extent.e_len) >
+ (1U << (21 - ctx->fs->super->s_log_block_size))))
+ problem = PR_1_TOOBIG_DIR;
+
+ if (is_leaf && problem == 0 && extent.e_len > 0) {
+#if 0
+ printf("extent_region(ino=%u, expect=%llu, "
+ "lblk=%llu, len=%u)\n", pb->ino,
+ (unsigned long long) pb->next_lblock,
+ (unsigned long long) extent.e_lblk,
+ extent.e_len);
+#endif
+ if (extent.e_lblk < pb->next_lblock)
+ problem = PR_1_EXTENT_COLLISION;
+ else if (extent.e_lblk + extent.e_len > pb->next_lblock)
+ pb->next_lblock = extent.e_lblk + extent.e_len;
+ }
+
+ /*
+ * Uninitialized blocks in a directory? Clear the flag and
+ * we'll interpret the blocks later.
+ */
+ if (try_repairs && is_dir && problem == 0 &&
+ (extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT) &&
+ fix_problem(ctx, PR_1_UNINIT_DBLOCK, pctx)) {
+ extent.e_flags &= ~EXT2_EXTENT_FLAGS_UNINIT;
+ pb->inode_modified = 1;
+ pctx->errcode = ext2fs_extent_replace(ehandle, 0,
+ &extent);
+ if (pctx->errcode)
+ return;
+ failed_csum = 0;
+ }
+#ifdef CONFIG_DEVELOPER_FEATURES
+ if (try_repairs && !is_dir && problem == 0 &&
+ (ctx->options & E2F_OPT_CLEAR_UNINIT) &&
+ (extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT) &&
+ fix_problem(ctx, PR_1_CLEAR_UNINIT_EXTENT, pctx)) {
+ extent.e_flags &= ~EXT2_EXTENT_FLAGS_UNINIT;
+ pb->inode_modified = 1;
+ pctx->errcode = ext2fs_extent_replace(ehandle, 0,
+ &extent);
+ if (pctx->errcode)
+ return;
+ failed_csum = 0;
+ }
+#endif
+ if (try_repairs && problem) {
+report_problem:
+ if (fix_problem(ctx, problem, pctx)) {
+ if (ctx->invalid_bitmaps) {
+ /*
+ * If fsck knows the bitmaps are bad,
+ * skip to the next extent and
+ * try to clear this extent again
+ * after fixing the bitmaps, by
+ * restarting fsck.
+ */
+ pctx->errcode = ext2fs_extent_get(
+ ehandle,
+ EXT2_EXTENT_NEXT_SIB,
+ &extent);
+ ctx->flags |= E2F_FLAG_RESTART_LATER;
+ if (pctx->errcode ==
+ EXT2_ET_NO_CURRENT_NODE) {
+ pctx->errcode = 0;
+ break;
+ }
+ continue;
+ }
+ e2fsck_read_bitmaps(ctx);
+ pb->inode_modified = 1;
+ pctx->errcode =
+ ext2fs_extent_delete(ehandle, 0);
+ if (pctx->errcode) {
+ pctx->str = "ext2fs_extent_delete";
+ return;
+ }
+ pctx->errcode = ext2fs_extent_fix_parents(ehandle);
+ if (pctx->errcode &&
+ pctx->errcode != EXT2_ET_NO_CURRENT_NODE) {
+ pctx->str = "ext2fs_extent_fix_parents";
+ return;
+ }
+ pctx->errcode = ext2fs_extent_get(ehandle,
+ EXT2_EXTENT_CURRENT,
+ &extent);
+ if (pctx->errcode == EXT2_ET_NO_CURRENT_NODE) {
+ pctx->errcode = 0;
+ break;
+ }
+ failed_csum = 0;
+ continue;
+ }
+ goto next;
+ }
+
+ if (!is_leaf) {
+ blk64_t lblk = extent.e_lblk;
+ int next_try_repairs = 1;
+
+ blk = extent.e_pblk;
+
+ /*
+ * If this lower extent block collides with critical
+ * metadata, don't try to repair the damage. Pass 1b
+ * will reallocate the block; then we can try again.
+ */
+ if (pb->ino != EXT2_RESIZE_INO &&
+ extent.e_pblk < ctx->fs->super->s_blocks_count &&
+ ext2fs_test_block_bitmap2(ctx->block_metadata_map,
+ extent.e_pblk)) {
+ next_try_repairs = 0;
+ pctx->blk = blk;
+ fix_problem(ctx,
+ PR_1_CRITICAL_METADATA_COLLISION,
+ pctx);
+ if ((ctx->options & E2F_OPT_NO) == 0)
+ ctx->flags |= E2F_FLAG_RESTART_LATER;
+ }
+ pctx->errcode = ext2fs_extent_get(ehandle,
+ EXT2_EXTENT_DOWN, &extent);
+ if (pctx->errcode &&
+ pctx->errcode != EXT2_ET_EXTENT_CSUM_INVALID) {
+ pctx->str = "EXT2_EXTENT_DOWN";
+ problem = PR_1_EXTENT_HEADER_INVALID;
+ if (!next_try_repairs)
+ return;
+ if (pctx->errcode == EXT2_ET_EXTENT_HEADER_BAD)
+ goto report_problem;
+ return;
+ }
+ /* The next extent should match this index's logical start */
+ if (extent.e_lblk != lblk) {
+ struct ext2_extent_info e_info;
+
+ pctx->errcode = ext2fs_extent_get_info(ehandle,
+ &e_info);
+ if (pctx->errcode) {
+ pctx->str = "ext2fs_extent_get_info";
+ return;
+ }
+ pctx->blk = lblk;
+ pctx->blk2 = extent.e_lblk;
+ pctx->num = e_info.curr_level - 1;
+ problem = PR_1_EXTENT_INDEX_START_INVALID;
+ if (fix_problem(ctx, problem, pctx)) {
+ pb->inode_modified = 1;
+ pctx->errcode =
+ ext2fs_extent_fix_parents(ehandle);
+ if (pctx->errcode) {
+ pctx->str = "ext2fs_extent_fix_parents";
+ return;
+ }
+ }
+ }
+ scan_extent_node(ctx, pctx, pb, extent.e_lblk,
+ last_lblk, eof_block, ehandle,
+ next_try_repairs);
+ if (pctx->errcode)
+ return;
+ pctx->errcode = ext2fs_extent_get(ehandle,
+ EXT2_EXTENT_UP, &extent);
+ if (pctx->errcode) {
+ pctx->str = "EXT2_EXTENT_UP";
+ return;
+ }
+ mark_block_used(ctx, blk);
+ pb->num_blocks++;
+ goto next;
+ }
+
+ if ((pb->previous_block != 0) &&
+ (pb->previous_block+1 != extent.e_pblk)) {
+ if (ctx->options & E2F_OPT_FRAGCHECK) {
+ char type = '?';
+
+ if (pb->is_dir)
+ type = 'd';
+ else if (pb->is_reg)
+ type = 'f';
+
+ printf(("%6lu(%c): expecting %6lu "
+ "actual extent "
+ "phys %6lu log %lu len %lu\n"),
+ (unsigned long) pctx->ino, type,
+ (unsigned long) pb->previous_block+1,
+ (unsigned long) extent.e_pblk,
+ (unsigned long) extent.e_lblk,
+ (unsigned long) extent.e_len);
+ }
+ pb->fragmented = 1;
+ }
+ /*
+ * If we notice a gap in the logical block mappings of an
+ * extent-mapped directory, offer to close the hole by
+ * moving the logical block down, otherwise we'll go mad in
+ * pass 3 allocating empty directory blocks to fill the hole.
+ */
+ if (try_repairs && is_dir &&
+ pb->last_block + 1 < extent.e_lblk) {
+ blk64_t new_lblk;
+
+ new_lblk = pb->last_block + 1;
+ if (EXT2FS_CLUSTER_RATIO(ctx->fs) > 1)
+ new_lblk = ((new_lblk +
+ EXT2FS_CLUSTER_RATIO(ctx->fs) - 1) &
+ ~EXT2FS_CLUSTER_MASK(ctx->fs)) |
+ (extent.e_pblk &
+ EXT2FS_CLUSTER_MASK(ctx->fs));
+ pctx->blk = extent.e_lblk;
+ pctx->blk2 = new_lblk;
+ if (fix_problem(ctx, PR_1_COLLAPSE_DBLOCK, pctx)) {
+ extent.e_lblk = new_lblk;
+ pb->inode_modified = 1;
+ pctx->errcode = ext2fs_extent_replace(ehandle,
+ 0, &extent);
+ if (pctx->errcode) {
+ pctx->errcode = 0;
+ goto alloc_later;
+ }
+ pctx->errcode = ext2fs_extent_fix_parents(ehandle);
+ if (pctx->errcode)
+ goto failed_add_dir_block;
+ pctx->errcode = ext2fs_extent_goto(ehandle,
+ extent.e_lblk);
+ if (pctx->errcode)
+ goto failed_add_dir_block;
+ last_lblk = extent.e_lblk + extent.e_len - 1;
+ failed_csum = 0;
+ }
+ }
+alloc_later:
+ if (is_dir) {
+ while (++pb->last_db_block <
+ (e2_blkcnt_t) extent.e_lblk) {
+ pctx->errcode = ext2fs_add_dir_block2(
+ ctx->fs->dblist,
+ pb->ino, 0,
+ pb->last_db_block);
+ if (pctx->errcode) {
+ pctx->blk = 0;
+ pctx->num = pb->last_db_block;
+ goto failed_add_dir_block;
+ }
+ }
+
+ for (i = 0; i < extent.e_len; i++) {
+ pctx->errcode = ext2fs_add_dir_block2(
+ ctx->fs->dblist,
+ pctx->ino,
+ extent.e_pblk + i,
+ extent.e_lblk + i);
+ if (pctx->errcode) {
+ pctx->blk = extent.e_pblk + i;
+ pctx->num = extent.e_lblk + i;
+ failed_add_dir_block:
+ fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
+ /* Should never get here */
+ ctx->flags |= E2F_FLAG_ABORT;
+ return;
+ }
+ }
+ if (extent.e_len > 0)
+ pb->last_db_block = extent.e_lblk + extent.e_len - 1;
+ }
+ if (has_unaligned_cluster_map(ctx, pb->previous_block,
+ pb->last_block,
+ extent.e_pblk,
+ extent.e_lblk)) {
+ for (i = 0; i < extent.e_len; i++) {
+ pctx->blk = extent.e_lblk + i;
+ pctx->blk2 = extent.e_pblk + i;
+ fix_problem(ctx, PR_1_MISALIGNED_CLUSTER, pctx);
+ mark_block_used(ctx, extent.e_pblk + i);
+ mark_block_used(ctx, extent.e_pblk + i);
+ }
+ }
+
+ /*
+ * Check whether first cluster got marked in previous iteration.
+ */
+ if (ctx->fs->cluster_ratio_bits &&
+ pb->previous_block &&
+ (EXT2FS_B2C(ctx->fs, extent.e_pblk) ==
+ EXT2FS_B2C(ctx->fs, pb->previous_block)))
+ /* Set blk to the beginning of next cluster. */
+ blk = EXT2FS_C2B(
+ ctx->fs,
+ EXT2FS_B2C(ctx->fs, extent.e_pblk) + 1);
+ else
+ /* Set blk to the beginning of current cluster. */
+ blk = EXT2FS_C2B(ctx->fs,
+ EXT2FS_B2C(ctx->fs, extent.e_pblk));
+
+ if (blk < extent.e_pblk + extent.e_len) {
+ mark_blocks_used(ctx, blk,
+ extent.e_pblk + extent.e_len - blk);
+ n = DIV_ROUND_UP(extent.e_pblk + extent.e_len - blk,
+ EXT2FS_CLUSTER_RATIO(ctx->fs));
+ pb->num_blocks += n;
+ }
+ pb->last_block = extent.e_lblk + extent.e_len - 1;
+ pb->previous_block = extent.e_pblk + extent.e_len - 1;
+ start_block = pb->last_block = last_lblk;
+ if (is_leaf && !is_dir &&
+ !(extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT))
+ pb->last_init_lblock = last_lblk;
+ next:
+ pctx->errcode = ext2fs_extent_get(ehandle,
+ EXT2_EXTENT_NEXT_SIB,
+ &extent);
+ }
+
+ /* Failed csum but passes checks? Ask to fix checksum. */
+ if (failed_csum &&
+ fix_problem(ctx, PR_1_EXTENT_ONLY_CSUM_INVALID, pctx)) {
+ pb->inode_modified = 1;
+ pctx->errcode = ext2fs_extent_replace(ehandle, 0, &extent);
+ if (pctx->errcode)
+ return;
+ }
+
+ if (pctx->errcode == EXT2_ET_EXTENT_NO_NEXT)
+ pctx->errcode = 0;
+}
+
+static void check_blocks_extents(e2fsck_t ctx, struct problem_context *pctx,
+ struct process_block_struct *pb)
+{
+ struct ext2_extent_info info;
+ struct ext2_inode *inode = pctx->inode;
+ ext2_extent_handle_t ehandle;
+ ext2_filsys fs = ctx->fs;
+ ext2_ino_t ino = pctx->ino;
+ errcode_t retval;
+ blk64_t eof_lblk;
+ struct ext3_extent_header *eh;
+
+ /* Check for a proper extent header... */
+ eh = (struct ext3_extent_header *) &inode->i_block[0];
+ retval = ext2fs_extent_header_verify(eh, sizeof(inode->i_block));
+ if (retval) {
+ if (fix_problem(ctx, PR_1_MISSING_EXTENT_HEADER, pctx))
+ e2fsck_clear_inode(ctx, ino, inode, 0,
+ "check_blocks_extents");
+ pctx->errcode = 0;
+ return;
+ }
+
+ /* ...since this function doesn't fail if i_block is zeroed. */
+ pctx->errcode = ext2fs_extent_open2(fs, ino, inode, &ehandle);
+ if (pctx->errcode) {
+ if (fix_problem(ctx, PR_1_READ_EXTENT, pctx))
+ e2fsck_clear_inode(ctx, ino, inode, 0,
+ "check_blocks_extents");
+ pctx->errcode = 0;
+ return;
+ }
+
+ retval = ext2fs_extent_get_info(ehandle, &info);
+ if (retval == 0) {
+ int max_depth = info.max_depth;
+
+ if (max_depth >= MAX_EXTENT_DEPTH_COUNT)
+ max_depth = MAX_EXTENT_DEPTH_COUNT-1;
+ ctx->extent_depth_count[max_depth]++;
+ }
+
+ /* Check maximum extent depth */
+ pctx->blk = info.max_depth;
+ pctx->blk2 = ext2fs_max_extent_depth(ehandle);
+ if (pctx->blk2 < pctx->blk &&
+ fix_problem(ctx, PR_1_EXTENT_BAD_MAX_DEPTH, pctx))
+ pb->eti.force_rebuild = 1;
+
+ /* Can we collect extent tree level stats? */
+ pctx->blk = MAX_EXTENT_DEPTH_COUNT;
+ if (pctx->blk2 > pctx->blk)
+ fix_problem(ctx, PR_1E_MAX_EXTENT_TREE_DEPTH, pctx);
+ memset(pb->eti.ext_info, 0, sizeof(pb->eti.ext_info));
+ pb->eti.ino = pb->ino;
+
+ pb->next_lblock = 0;
+
+ eof_lblk = ((EXT2_I_SIZE(inode) + fs->blocksize - 1) >>
+ EXT2_BLOCK_SIZE_BITS(fs->super)) - 1;
+ scan_extent_node(ctx, pctx, pb, 0, 0, eof_lblk, ehandle, 1);
+ if (pctx->errcode &&
+ fix_problem(ctx, PR_1_EXTENT_ITERATE_FAILURE, pctx)) {
+ pb->num_blocks = 0;
+ inode->i_blocks = 0;
+ e2fsck_clear_inode(ctx, ino, inode, E2F_FLAG_RESTART,
+ "check_blocks_extents");
+ pctx->errcode = 0;
+ }
+ ext2fs_extent_free(ehandle);
+
+ /* Rebuild unless it's a dir and we're rehashing it */
+ if (LINUX_S_ISDIR(inode->i_mode) &&
+ e2fsck_dir_will_be_rehashed(ctx, ino))
+ return;
+
+ if (ctx->options & E2F_OPT_CONVERT_BMAP)
+ e2fsck_rebuild_extents_later(ctx, ino);
+ else
+ e2fsck_should_rebuild_extents(ctx, pctx, &pb->eti, &info);
+}
+
+/*
+ * In fact we don't need to check blocks for an inode with inline data
+ * because this inode doesn't have any blocks. In this function all
+ * we need to do is add this inode into dblist when it is a directory.
+ */
+static void check_blocks_inline_data(e2fsck_t ctx, struct problem_context *pctx,
+ struct process_block_struct *pb)
+{
+ int flags;
+ size_t inline_data_size = 0;
+
+ if (!pb->is_dir) {
+ pctx->errcode = 0;
+ return;
+ }
+
+ /* Process the dirents in i_block[] as the "first" block. */
+ pctx->errcode = ext2fs_add_dir_block2(ctx->fs->dblist, pb->ino, 0, 0);
+ if (pctx->errcode)
+ goto err;
+
+ /* Process the dirents in the EA as a "second" block. */
+ flags = ctx->fs->flags;
+ ctx->fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
+ pctx->errcode = ext2fs_inline_data_size(ctx->fs, pb->ino,
+ &inline_data_size);
+ ctx->fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
+ (ctx->fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
+ if (pctx->errcode) {
+ pctx->errcode = 0;
+ return;
+ }
+
+ if (inline_data_size <= EXT4_MIN_INLINE_DATA_SIZE)
+ return;
+
+ pctx->errcode = ext2fs_add_dir_block2(ctx->fs->dblist, pb->ino, 0, 1);
+ if (pctx->errcode)
+ goto err;
+
+ return;
+err:
+ pctx->blk = 0;
+ pctx->num = 0;
+ fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
+ ctx->flags |= E2F_FLAG_ABORT;
+}
+
+/*
+ * This subroutine is called on each inode to account for all of the
+ * blocks used by that inode.
+ */
+static void check_blocks(e2fsck_t ctx, struct problem_context *pctx,
+ char *block_buf, const struct ea_quota *ea_ibody_quota)
+{
+ ext2_filsys fs = ctx->fs;
+ struct process_block_struct pb;
+ ext2_ino_t ino = pctx->ino;
+ struct ext2_inode *inode = pctx->inode;
+ unsigned bad_size = 0;
+ int dirty_inode = 0;
+ int extent_fs;
+ int inlinedata_fs;
+ __u64 size;
+ struct ea_quota ea_block_quota;
+
+ pb.ino = ino;
+ pb.num_blocks = EXT2FS_B2C(ctx->fs,
+ ea_ibody_quota ? ea_ibody_quota->blocks : 0);
+ pb.last_block = ~0;
+ pb.last_init_lblock = -1;
+ pb.last_db_block = -1;
+ pb.num_illegal_blocks = 0;
+ pb.suppress = 0; pb.clear = 0;
+ pb.fragmented = 0;
+ pb.compressed = 0;
+ pb.previous_block = 0;
+ pb.is_dir = LINUX_S_ISDIR(inode->i_mode);
+ pb.is_reg = LINUX_S_ISREG(inode->i_mode);
+ pb.max_blocks = 1U << (31 - fs->super->s_log_block_size);
+ pb.inode = inode;
+ pb.pctx = pctx;
+ pb.ctx = ctx;
+ pb.inode_modified = 0;
+ pb.eti.force_rebuild = 0;
+ pctx->ino = ino;
+ pctx->errcode = 0;
+
+ extent_fs = ext2fs_has_feature_extents(ctx->fs->super);
+ inlinedata_fs = ext2fs_has_feature_inline_data(ctx->fs->super);
+
+ if (check_ext_attr(ctx, pctx, block_buf, &ea_block_quota)) {
+ if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
+ goto out;
+ pb.num_blocks += EXT2FS_B2C(ctx->fs, ea_block_quota.blocks);
+ }
+
+ if (inlinedata_fs && (inode->i_flags & EXT4_INLINE_DATA_FL))
+ check_blocks_inline_data(ctx, pctx, &pb);
+ else if (ext2fs_inode_has_valid_blocks2(fs, inode)) {
+ if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL))
+ check_blocks_extents(ctx, pctx, &pb);
+ else {
+ int flags;
+ /*
+ * If we've modified the inode, write it out before
+ * iterate() tries to use it.
+ */
+ if (dirty_inode) {
+ e2fsck_write_inode(ctx, ino, inode,
+ "check_blocks");
+ dirty_inode = 0;
+ }
+ flags = fs->flags;
+ fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
+ pctx->errcode = ext2fs_block_iterate3(fs, ino,
+ pb.is_dir ? BLOCK_FLAG_HOLE : 0,
+ block_buf, process_block, &pb);
+ /*
+ * We do not have uninitialized extents in non extent
+ * files.
+ */
+ pb.last_init_lblock = pb.last_block;
+ /*
+ * If iterate() changed a block mapping, we have to
+ * re-read the inode. If we decide to clear the
+ * inode after clearing some stuff, we'll re-write the
+ * bad mappings into the inode!
+ */
+ if (pb.inode_modified)
+ e2fsck_read_inode(ctx, ino, inode,
+ "check_blocks");
+ fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
+ (fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
+
+ if (ctx->options & E2F_OPT_CONVERT_BMAP) {
+#ifdef DEBUG
+ printf("bmap rebuild ino=%d\n", ino);
+#endif
+ if (!LINUX_S_ISDIR(inode->i_mode) ||
+ !e2fsck_dir_will_be_rehashed(ctx, ino))
+ e2fsck_rebuild_extents_later(ctx, ino);
+ }
+ }
+ }
+ end_problem_latch(ctx, PR_LATCH_BLOCK);
+ end_problem_latch(ctx, PR_LATCH_TOOBIG);
+ if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
+ goto out;
+ if (pctx->errcode)
+ fix_problem(ctx, PR_1_BLOCK_ITERATE, pctx);
+
+ if (pb.fragmented && pb.num_blocks < fs->super->s_blocks_per_group) {
+ if (LINUX_S_ISDIR(inode->i_mode))
+ ctx->fs_fragmented_dir++;
+ else
+ ctx->fs_fragmented++;
+ }
+
+ if (pb.clear) {
+ e2fsck_clear_inode(ctx, ino, inode, E2F_FLAG_RESTART,
+ "check_blocks");
+ return;
+ }
+
+ if (inode->i_flags & EXT2_INDEX_FL) {
+ if (handle_htree(ctx, pctx, ino, inode, block_buf)) {
+ inode->i_flags &= ~EXT2_INDEX_FL;
+ dirty_inode++;
+ } else {
+ e2fsck_add_dx_dir(ctx, ino, inode, pb.last_block+1);
+ }
+ }
+
+ if (!pb.num_blocks && pb.is_dir &&
+ !(inode->i_flags & EXT4_INLINE_DATA_FL)) {
+ if (fix_problem(ctx, PR_1_ZERO_LENGTH_DIR, pctx)) {
+ e2fsck_clear_inode(ctx, ino, inode, 0, "check_blocks");
+ ctx->fs_directory_count--;
+ return;
+ }
+ }
+
+ if (ino != quota_type2inum(PRJQUOTA, fs->super) &&
+ ino != fs->super->s_orphan_file_inum &&
+ (ino == EXT2_ROOT_INO || ino >= EXT2_FIRST_INODE(ctx->fs->super)) &&
+ !(inode->i_flags & EXT4_EA_INODE_FL)) {
+ quota_data_add(ctx->qctx, (struct ext2_inode_large *) inode,
+ ino,
+ pb.num_blocks * EXT2_CLUSTER_SIZE(fs->super));
+ quota_data_inodes(ctx->qctx, (struct ext2_inode_large *) inode,
+ ino, (ea_ibody_quota ?
+ ea_ibody_quota->inodes : 0) +
+ ea_block_quota.inodes + 1);
+ }
+
+ if (!ext2fs_has_feature_huge_file(fs->super) ||
+ !(inode->i_flags & EXT4_HUGE_FILE_FL))
+ pb.num_blocks *= (fs->blocksize / 512);
+ pb.num_blocks *= EXT2FS_CLUSTER_RATIO(fs);
+#if 0
+ printf("inode %u, i_size = %u, last_block = %llu, i_blocks=%llu, num_blocks = %llu\n",
+ ino, inode->i_size, (unsigned long long) pb.last_block,
+ (unsigned long long) ext2fs_inode_i_blocks(fs, inode),
+ (unsigned long long) pb.num_blocks);
+#endif
+ size = EXT2_I_SIZE(inode);
+ if (pb.is_dir) {
+ unsigned nblock = size >> EXT2_BLOCK_SIZE_BITS(fs->super);
+ if (inode->i_flags & EXT4_INLINE_DATA_FL) {
+ int flags;
+ size_t sz = 0;
+ errcode_t err;
+
+ flags = ctx->fs->flags;
+ ctx->fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
+ err = ext2fs_inline_data_size(ctx->fs, pctx->ino,
+ &sz);
+ ctx->fs->flags = (flags &
+ EXT2_FLAG_IGNORE_CSUM_ERRORS) |
+ (ctx->fs->flags &
+ ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
+ if (err || sz != size) {
+ bad_size = 7;
+ pctx->num = sz;
+ }
+ } else if (size & (fs->blocksize - 1))
+ bad_size = 5;
+ else if (nblock > (pb.last_block + 1))
+ bad_size = 1;
+ else if (nblock < (pb.last_block + 1)) {
+ if (((pb.last_block + 1) - nblock) >
+ fs->super->s_prealloc_dir_blocks)
+ bad_size = 2;
+ }
+ } else {
+ if ((pb.last_init_lblock >= 0) &&
+ /* Do not allow initialized allocated blocks past i_size*/
+ (size < (__u64)pb.last_init_lblock * fs->blocksize) &&
+ !(inode->i_flags & EXT4_VERITY_FL))
+ bad_size = 3;
+ else if (!(extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) &&
+ size > ext2_max_sizes[fs->super->s_log_block_size])
+ /* too big for a direct/indirect-mapped file */
+ bad_size = 4;
+ else if ((extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) &&
+ size >
+ ((1ULL << (32 + EXT2_BLOCK_SIZE_BITS(fs->super))) - 1))
+ /* too big for an extent-based file - 32bit ee_block */
+ bad_size = 6;
+ }
+ /* i_size for symlinks is checked elsewhere */
+ if (bad_size && !LINUX_S_ISLNK(inode->i_mode)) {
+ /* Did inline_data set pctx->num earlier? */
+ if (bad_size != 7)
+ pctx->num = (pb.last_block + 1) * fs->blocksize;
+ pctx->group = bad_size;
+ if (fix_problem(ctx, PR_1_BAD_I_SIZE, pctx)) {
+ ext2fs_inode_size_set(fs, inode, pctx->num);
+ if (EXT2_I_SIZE(inode) == 0 &&
+ (inode->i_flags & EXT4_INLINE_DATA_FL)) {
+ memset(inode->i_block, 0,
+ sizeof(inode->i_block));
+ inode->i_flags &= ~EXT4_INLINE_DATA_FL;
+ }
+ dirty_inode++;
+ }
+ pctx->num = 0;
+ }
+ if (LINUX_S_ISREG(inode->i_mode) &&
+ ext2fs_needs_large_file_feature(EXT2_I_SIZE(inode)))
+ ctx->large_files++;
+ if ((fs->super->s_creator_os != EXT2_OS_HURD) &&
+ ((pb.num_blocks != ext2fs_inode_i_blocks(fs, inode)) ||
+ (ext2fs_has_feature_huge_file(fs->super) &&
+ (inode->i_flags & EXT4_HUGE_FILE_FL) &&
+ (inode->osd2.linux2.l_i_blocks_hi != 0)))) {
+ pctx->num = pb.num_blocks;
+ if (fix_problem(ctx, PR_1_BAD_I_BLOCKS, pctx)) {
+ inode->i_blocks = pb.num_blocks;
+ inode->osd2.linux2.l_i_blocks_hi = pb.num_blocks >> 32;
+ dirty_inode++;
+ }
+ pctx->num = 0;
+ }
+
+ /*
+ * The kernel gets mad if we ask it to allocate bigalloc clusters to
+ * a block mapped file, so rebuild it as an extent file. We can skip
+ * symlinks because they're never rewritten.
+ */
+ if (ext2fs_has_feature_bigalloc(fs->super) &&
+ (LINUX_S_ISREG(inode->i_mode) || LINUX_S_ISDIR(inode->i_mode)) &&
+ ext2fs_inode_data_blocks2(fs, inode) > 0 &&
+ (ino == EXT2_ROOT_INO || ino >= EXT2_FIRST_INO(fs->super)) &&
+ !(inode->i_flags & (EXT4_EXTENTS_FL | EXT4_INLINE_DATA_FL)) &&
+ fix_problem(ctx, PR_1_NO_BIGALLOC_BLOCKMAP_FILES, pctx)) {
+ pctx->errcode = e2fsck_rebuild_extents_later(ctx, ino);
+ if (pctx->errcode)
+ goto out;
+ }
+
+ if (ctx->dirs_to_hash && pb.is_dir &&
+ !(ctx->lost_and_found && ctx->lost_and_found == ino) &&
+ !(inode->i_flags & EXT2_INDEX_FL) &&
+ ((inode->i_size / fs->blocksize) >= 3))
+ e2fsck_rehash_dir_later(ctx, ino);
+
+out:
+ if (dirty_inode)
+ e2fsck_write_inode(ctx, ino, inode, "check_blocks");
+}
+
+#if 0
+/*
+ * Helper function called by process block when an illegal block is
+ * found. It returns a description about why the block is illegal
+ */
+static char *describe_illegal_block(ext2_filsys fs, blk64_t block)
+{
+ blk64_t super;
+ int i;
+ static char problem[80];
+
+ super = fs->super->s_first_data_block;
+ strcpy(problem, "PROGRAMMING ERROR: Unknown reason for illegal block");
+ if (block < super) {
+ sprintf(problem, "< FIRSTBLOCK (%u)", super);
+ return(problem);
+ } else if (block >= ext2fs_blocks_count(fs->super)) {
+ sprintf(problem, "> BLOCKS (%u)", ext2fs_blocks_count(fs->super));
+ return(problem);
+ }
+ for (i = 0; i < fs->group_desc_count; i++) {
+ if (block == super) {
+ sprintf(problem, "is the superblock in group %d", i);
+ break;
+ }
+ if (block > super &&
+ block <= (super + fs->desc_blocks)) {
+ sprintf(problem, "is in the group descriptors "
+ "of group %d", i);
+ break;
+ }
+ if (block == ext2fs_block_bitmap_loc(fs, i)) {
+ sprintf(problem, "is the block bitmap of group %d", i);
+ break;
+ }
+ if (block == ext2fs_inode_bitmap_loc(fs, i)) {
+ sprintf(problem, "is the inode bitmap of group %d", i);
+ break;
+ }
+ if (block >= ext2fs_inode_table_loc(fs, i) &&
+ (block < ext2fs_inode_table_loc(fs, i)
+ + fs->inode_blocks_per_group)) {
+ sprintf(problem, "is in the inode table of group %d",
+ i);
+ break;
+ }
+ super += fs->super->s_blocks_per_group;
+ }
+ return(problem);
+}
+#endif
+
+/*
+ * This is a helper function for check_blocks().
+ */
+static int process_block(ext2_filsys fs,
+ blk64_t *block_nr,
+ e2_blkcnt_t blockcnt,
+ blk64_t ref_block EXT2FS_ATTR((unused)),
+ int ref_offset EXT2FS_ATTR((unused)),
+ void *priv_data)
+{
+ struct process_block_struct *p;
+ struct problem_context *pctx;
+ blk64_t blk = *block_nr;
+ int ret_code = 0;
+ problem_t problem = 0;
+ e2fsck_t ctx;
+
+ p = (struct process_block_struct *) priv_data;
+ pctx = p->pctx;
+ ctx = p->ctx;
+
+ /*
+ * For a directory, add logical block zero for processing even if it's
+ * not mapped or we'll be perennially stuck with broken "." and ".."
+ * entries.
+ */
+ if (p->is_dir && blockcnt == 0 && blk == 0) {
+ pctx->errcode = ext2fs_add_dir_block2(fs->dblist, p->ino, 0, 0);
+ if (pctx->errcode) {
+ pctx->blk = blk;
+ pctx->num = blockcnt;
+ goto failed_add_dir_block;
+ }
+ p->last_db_block++;
+ }
+
+ if (blk == 0)
+ return 0;
+
+#if 0
+ printf("Process_block, inode %lu, block %u, #%d\n", p->ino, blk,
+ blockcnt);
+#endif
+
+ /*
+ * Simplistic fragmentation check. We merely require that the
+ * file be contiguous. (Which can never be true for really
+ * big files that are greater than a block group.)
+ */
+ if (p->previous_block && p->ino != EXT2_RESIZE_INO) {
+ if (p->previous_block+1 != blk) {
+ if (ctx->options & E2F_OPT_FRAGCHECK) {
+ char type = '?';
+
+ if (p->is_dir)
+ type = 'd';
+ else if (p->is_reg)
+ type = 'f';
+
+ printf(_("%6lu(%c): expecting %6lu "
+ "got phys %6lu (blkcnt %lld)\n"),
+ (unsigned long) pctx->ino, type,
+ (unsigned long) p->previous_block+1,
+ (unsigned long) blk,
+ (long long) blockcnt);
+ }
+ p->fragmented = 1;
+ }
+ }
+
+ if (p->is_dir && !ext2fs_has_feature_largedir(fs->super) &&
+ !pctx->inode->i_size_high &&
+ blockcnt > (1 << (21 - fs->super->s_log_block_size)))
+ problem = PR_1_TOOBIG_DIR;
+ if (p->is_dir && p->num_blocks + 1 >= p->max_blocks)
+ problem = PR_1_TOOBIG_DIR;
+ if (p->is_reg && p->num_blocks + 1 >= p->max_blocks)
+ problem = PR_1_TOOBIG_REG;
+ if (!p->is_dir && !p->is_reg && blockcnt > 0)
+ problem = PR_1_TOOBIG_SYMLINK;
+
+ if (blk < fs->super->s_first_data_block ||
+ blk >= ext2fs_blocks_count(fs->super))
+ problem = PR_1_ILLEGAL_BLOCK_NUM;
+
+ /*
+ * If this IND/DIND/TIND block is squatting atop some critical metadata
+ * (group descriptors, superblock, bitmap, inode table), any write to
+ * "fix" mapping problems will destroy the metadata. We'll let pass 1b
+ * fix that and restart fsck.
+ */
+ if (blockcnt < 0 &&
+ p->ino != EXT2_RESIZE_INO &&
+ blk < ctx->fs->super->s_blocks_count &&
+ ext2fs_test_block_bitmap2(ctx->block_metadata_map, blk)) {
+ pctx->blk = blk;
+ fix_problem(ctx, PR_1_CRITICAL_METADATA_COLLISION, pctx);
+ if ((ctx->options & E2F_OPT_NO) == 0)
+ ctx->flags |= E2F_FLAG_RESTART_LATER;
+ }
+
+ if (problem) {
+ p->num_illegal_blocks++;
+ /*
+ * A bit of subterfuge here -- we're trying to fix a block
+ * mapping, but the IND/DIND/TIND block could have collided
+ * with some critical metadata. So, fix the in-core mapping so
+ * iterate won't go insane, but return 0 instead of
+ * BLOCK_CHANGED so that it won't write the remapping out to
+ * our multiply linked block.
+ *
+ * Even if we previously determined that an *IND block
+ * conflicts with critical metadata, we must still try to
+ * iterate the *IND block as if it is an *IND block to find and
+ * mark the blocks it points to. Better to be overly cautious
+ * with the used_blocks map so that we don't move the *IND
+ * block to a block that's really in use!
+ */
+ if (p->ino != EXT2_RESIZE_INO &&
+ ref_block != 0 &&
+ ext2fs_test_block_bitmap2(ctx->block_metadata_map,
+ ref_block)) {
+ *block_nr = 0;
+ return 0;
+ }
+ if (!p->suppress && (p->num_illegal_blocks % 12) == 0) {
+ if (fix_problem(ctx, PR_1_TOO_MANY_BAD_BLOCKS, pctx)) {
+ p->clear = 1;
+ return BLOCK_ABORT;
+ }
+ if (fix_problem(ctx, PR_1_SUPPRESS_MESSAGES, pctx)) {
+ p->suppress = 1;
+ set_latch_flags(PR_LATCH_BLOCK,
+ PRL_SUPPRESS, 0);
+ }
+ }
+ pctx->blk = blk;
+ pctx->blkcount = blockcnt;
+ if (fix_problem(ctx, problem, pctx)) {
+ blk = *block_nr = 0;
+ ret_code = BLOCK_CHANGED;
+ p->inode_modified = 1;
+ /*
+ * If the directory block is too big and is beyond the
+ * end of the FS, don't bother trying to add it for
+ * processing -- the kernel would never have created a
+ * directory this large, and we risk an ENOMEM abort.
+ * In any case, the toobig handler for extent-based
+ * directories also doesn't feed toobig blocks to
+ * pass 2.
+ */
+ if (problem == PR_1_TOOBIG_DIR)
+ return ret_code;
+ goto mark_dir;
+ } else
+ return 0;
+ }
+
+ if (p->ino == EXT2_RESIZE_INO) {
+ /*
+ * The resize inode has already be sanity checked
+ * during pass #0 (the superblock checks). All we
+ * have to do is mark the double indirect block as
+ * being in use; all of the other blocks are handled
+ * by mark_table_blocks()).
+ */
+ if (blockcnt == BLOCK_COUNT_DIND)
+ mark_block_used(ctx, blk);
+ p->num_blocks++;
+ } else if (!(ctx->fs->cluster_ratio_bits &&
+ p->previous_block &&
+ (EXT2FS_B2C(ctx->fs, blk) ==
+ EXT2FS_B2C(ctx->fs, p->previous_block)) &&
+ (blk & EXT2FS_CLUSTER_MASK(ctx->fs)) ==
+ ((unsigned) blockcnt & EXT2FS_CLUSTER_MASK(ctx->fs)))) {
+ mark_block_used(ctx, blk);
+ p->num_blocks++;
+ } else if (has_unaligned_cluster_map(ctx, p->previous_block,
+ p->last_block, blk, blockcnt)) {
+ pctx->blk = blockcnt;
+ pctx->blk2 = blk;
+ fix_problem(ctx, PR_1_MISALIGNED_CLUSTER, pctx);
+ mark_block_used(ctx, blk);
+ mark_block_used(ctx, blk);
+ }
+ if (blockcnt >= 0)
+ p->last_block = blockcnt;
+ p->previous_block = blk;
+mark_dir:
+ if (p->is_dir && (blockcnt >= 0)) {
+ while (++p->last_db_block < blockcnt) {
+ pctx->errcode = ext2fs_add_dir_block2(fs->dblist,
+ p->ino, 0,
+ p->last_db_block);
+ if (pctx->errcode) {
+ pctx->blk = 0;
+ pctx->num = p->last_db_block;
+ goto failed_add_dir_block;
+ }
+ }
+ pctx->errcode = ext2fs_add_dir_block2(fs->dblist, p->ino,
+ blk, blockcnt);
+ if (pctx->errcode) {
+ pctx->blk = blk;
+ pctx->num = blockcnt;
+ failed_add_dir_block:
+ fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
+ /* Should never get here */
+ ctx->flags |= E2F_FLAG_ABORT;
+ return BLOCK_ABORT;
+ }
+ }
+ return ret_code;
+}
+
+static int process_bad_block(ext2_filsys fs,
+ blk64_t *block_nr,
+ e2_blkcnt_t blockcnt,
+ blk64_t ref_block EXT2FS_ATTR((unused)),
+ int ref_offset EXT2FS_ATTR((unused)),
+ void *priv_data)
+{
+ struct process_block_struct *p;
+ blk64_t blk = *block_nr;
+ blk64_t first_block;
+ dgrp_t i;
+ struct problem_context *pctx;
+ e2fsck_t ctx;
+
+ if (!blk)
+ return 0;
+
+ p = (struct process_block_struct *) priv_data;
+ ctx = p->ctx;
+ pctx = p->pctx;
+
+ pctx->ino = EXT2_BAD_INO;
+ pctx->blk = blk;
+ pctx->blkcount = blockcnt;
+
+ if ((blk < fs->super->s_first_data_block) ||
+ (blk >= ext2fs_blocks_count(fs->super))) {
+ if (fix_problem(ctx, PR_1_BB_ILLEGAL_BLOCK_NUM, pctx)) {
+ *block_nr = 0;
+ return BLOCK_CHANGED;
+ } else
+ return 0;
+ }
+
+ if (blockcnt < 0) {
+ if (ext2fs_test_block_bitmap2(p->fs_meta_blocks, blk)) {
+ p->bbcheck = 1;
+ if (fix_problem(ctx, PR_1_BB_FS_BLOCK, pctx)) {
+ *block_nr = 0;
+ return BLOCK_CHANGED;
+ }
+ } else if (ext2fs_test_block_bitmap2(ctx->block_found_map,
+ blk)) {
+ p->bbcheck = 1;
+ if (fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK,
+ pctx)) {
+ *block_nr = 0;
+ return BLOCK_CHANGED;
+ }
+ if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
+ return BLOCK_ABORT;
+ } else
+ mark_block_used(ctx, blk);
+ return 0;
+ }
+#if 0
+ printf ("DEBUG: Marking %u as bad.\n", blk);
+#endif
+ ctx->fs_badblocks_count++;
+ /*
+ * If the block is not used, then mark it as used and return.
+ * If it is already marked as found, this must mean that
+ * there's an overlap between the filesystem table blocks
+ * (bitmaps and inode table) and the bad block list.
+ */
+ if (!ext2fs_test_block_bitmap2(ctx->block_found_map, blk)) {
+ ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
+ return 0;
+ }
+ /*
+ * Try to find the where the filesystem block was used...
+ */
+ first_block = fs->super->s_first_data_block;
+
+ for (i = 0; i < fs->group_desc_count; i++ ) {
+ pctx->group = i;
+ pctx->blk = blk;
+ if (!ext2fs_bg_has_super(fs, i))
+ goto skip_super;
+ if (blk == first_block) {
+ if (i == 0) {
+ if (fix_problem(ctx,
+ PR_1_BAD_PRIMARY_SUPERBLOCK,
+ pctx)) {
+ *block_nr = 0;
+ return BLOCK_CHANGED;
+ }
+ return 0;
+ }
+ fix_problem(ctx, PR_1_BAD_SUPERBLOCK, pctx);
+ return 0;
+ }
+ if ((blk > first_block) &&
+ (blk <= first_block + fs->desc_blocks)) {
+ if (i == 0) {
+ pctx->blk = *block_nr;
+ if (fix_problem(ctx,
+ PR_1_BAD_PRIMARY_GROUP_DESCRIPTOR, pctx)) {
+ *block_nr = 0;
+ return BLOCK_CHANGED;
+ }
+ return 0;
+ }
+ fix_problem(ctx, PR_1_BAD_GROUP_DESCRIPTORS, pctx);
+ return 0;
+ }
+ skip_super:
+ if (blk == ext2fs_block_bitmap_loc(fs, i)) {
+ if (fix_problem(ctx, PR_1_BB_BAD_BLOCK, pctx)) {
+ ctx->invalid_block_bitmap_flag[i]++;
+ ctx->invalid_bitmaps++;
+ }
+ return 0;
+ }
+ if (blk == ext2fs_inode_bitmap_loc(fs, i)) {
+ if (fix_problem(ctx, PR_1_IB_BAD_BLOCK, pctx)) {
+ ctx->invalid_inode_bitmap_flag[i]++;
+ ctx->invalid_bitmaps++;
+ }
+ return 0;
+ }
+ if ((blk >= ext2fs_inode_table_loc(fs, i)) &&
+ (blk < (ext2fs_inode_table_loc(fs, i) +
+ fs->inode_blocks_per_group))) {
+ /*
+ * If there are bad blocks in the inode table,
+ * the inode scan code will try to do
+ * something reasonable automatically.
+ */
+ return 0;
+ }
+ first_block += fs->super->s_blocks_per_group;
+ }
+ /*
+ * If we've gotten to this point, then the only
+ * possibility is that the bad block inode meta data
+ * is using a bad block.
+ */
+ if ((blk == p->inode->i_block[EXT2_IND_BLOCK]) ||
+ (blk == p->inode->i_block[EXT2_DIND_BLOCK]) ||
+ (blk == p->inode->i_block[EXT2_TIND_BLOCK])) {
+ p->bbcheck = 1;
+ if (fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK, pctx)) {
+ *block_nr = 0;
+ return BLOCK_CHANGED;
+ }
+ if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
+ return BLOCK_ABORT;
+ return 0;
+ }
+
+ pctx->group = -1;
+
+ /* Warn user that the block wasn't claimed */
+ fix_problem(ctx, PR_1_PROGERR_CLAIMED_BLOCK, pctx);
+
+ return 0;
+}
+
+static void new_table_block(e2fsck_t ctx, blk64_t first_block, dgrp_t group,
+ const char *name, int num, blk64_t *new_block)
+{
+ ext2_filsys fs = ctx->fs;
+ dgrp_t last_grp;
+ blk64_t old_block = *new_block;
+ blk64_t last_block;
+ dgrp_t flexbg;
+ unsigned flexbg_size;
+ int i, is_flexbg;
+ char *buf;
+ struct problem_context pctx;
+
+ clear_problem_context(&pctx);
+
+ pctx.group = group;
+ pctx.blk = old_block;
+ pctx.str = name;
+
+ /*
+ * For flex_bg filesystems, first try to allocate the metadata
+ * within the flex_bg, and if that fails then try finding the
+ * space anywhere in the filesystem.
+ */
+ is_flexbg = ext2fs_has_feature_flex_bg(fs->super);
+ if (is_flexbg) {
+ flexbg_size = 1U << fs->super->s_log_groups_per_flex;
+ flexbg = group / flexbg_size;
+ first_block = ext2fs_group_first_block2(fs,
+ flexbg_size * flexbg);
+ last_grp = group | (flexbg_size - 1);
+ if (last_grp >= fs->group_desc_count)
+ last_grp = fs->group_desc_count - 1;
+ last_block = ext2fs_group_last_block2(fs, last_grp);
+ } else
+ last_block = ext2fs_group_last_block2(fs, group);
+ pctx.errcode = ext2fs_get_free_blocks2(fs, first_block, last_block,
+ num, ctx->block_found_map,
+ new_block);
+ if (is_flexbg && (pctx.errcode == EXT2_ET_BLOCK_ALLOC_FAIL))
+ pctx.errcode = ext2fs_get_free_blocks2(fs,
+ fs->super->s_first_data_block,
+ ext2fs_blocks_count(fs->super),
+ num, ctx->block_found_map, new_block);
+ if (pctx.errcode) {
+ pctx.num = num;
+ fix_problem(ctx, PR_1_RELOC_BLOCK_ALLOCATE, &pctx);
+ ext2fs_unmark_valid(fs);
+ ctx->flags |= E2F_FLAG_ABORT;
+ return;
+ }
+ pctx.errcode = ext2fs_get_mem(fs->blocksize, &buf);
+ if (pctx.errcode) {
+ fix_problem(ctx, PR_1_RELOC_MEMORY_ALLOCATE, &pctx);
+ ext2fs_unmark_valid(fs);
+ ctx->flags |= E2F_FLAG_ABORT;
+ return;
+ }
+ ext2fs_mark_super_dirty(fs);
+ fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
+ pctx.blk2 = *new_block;
+ fix_problem(ctx, (old_block ? PR_1_RELOC_FROM_TO :
+ PR_1_RELOC_TO), &pctx);
+ pctx.blk2 = 0;
+ for (i = 0; i < num; i++) {
+ pctx.blk = i;
+ ext2fs_mark_block_bitmap2(ctx->block_found_map, (*new_block)+i);
+ if (old_block) {
+ pctx.errcode = io_channel_read_blk64(fs->io,
+ old_block + i, 1, buf);
+ if (pctx.errcode)
+ fix_problem(ctx, PR_1_RELOC_READ_ERR, &pctx);
+ pctx.blk = (*new_block) + i;
+ pctx.errcode = io_channel_write_blk64(fs->io, pctx.blk,
+ 1, buf);
+ } else {
+ pctx.blk = (*new_block) + i;
+ pctx.errcode = ext2fs_zero_blocks2(fs, pctx.blk, 1,
+ NULL, NULL);
+ }
+
+ if (pctx.errcode)
+ fix_problem(ctx, PR_1_RELOC_WRITE_ERR, &pctx);
+ }
+ ext2fs_free_mem(&buf);
+}
+
+/*
+ * This routine gets called at the end of pass 1 if bad blocks are
+ * detected in the superblock, group descriptors, inode_bitmaps, or
+ * block bitmaps. At this point, all of the blocks have been mapped
+ * out, so we can try to allocate new block(s) to replace the bad
+ * blocks.
+ */
+static void handle_fs_bad_blocks(e2fsck_t ctx)
+{
+ ext2_filsys fs = ctx->fs;
+ dgrp_t i;
+ blk64_t first_block;
+ blk64_t new_blk;
+
+ for (i = 0; i < fs->group_desc_count; i++) {
+ first_block = ext2fs_group_first_block2(fs, i);
+
+ if (ctx->invalid_block_bitmap_flag[i]) {
+ new_blk = ext2fs_block_bitmap_loc(fs, i);
+ new_table_block(ctx, first_block, i, _("block bitmap"),
+ 1, &new_blk);
+ ext2fs_block_bitmap_loc_set(fs, i, new_blk);
+ }
+ if (ctx->invalid_inode_bitmap_flag[i]) {
+ new_blk = ext2fs_inode_bitmap_loc(fs, i);
+ new_table_block(ctx, first_block, i, _("inode bitmap"),
+ 1, &new_blk);
+ ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
+ }
+ if (ctx->invalid_inode_table_flag[i]) {
+ new_blk = ext2fs_inode_table_loc(fs, i);
+ new_table_block(ctx, first_block, i, _("inode table"),
+ fs->inode_blocks_per_group,
+ &new_blk);
+ ext2fs_inode_table_loc_set(fs, i, new_blk);
+ ctx->flags |= E2F_FLAG_RESTART;
+ }
+ }
+ ctx->invalid_bitmaps = 0;
+}
+
+/*
+ * This routine marks all blocks which are used by the superblock,
+ * group descriptors, inode bitmaps, and block bitmaps.
+ */
+static void mark_table_blocks(e2fsck_t ctx)
+{
+ ext2_filsys fs = ctx->fs;
+ blk64_t b;
+ dgrp_t i;
+ unsigned int j;
+ struct problem_context pctx;
+
+ clear_problem_context(&pctx);
+
+ for (i = 0; i < fs->group_desc_count; i++) {
+ pctx.group = i;
+
+ ext2fs_reserve_super_and_bgd(fs, i, ctx->block_found_map);
+ ext2fs_reserve_super_and_bgd(fs, i, ctx->block_metadata_map);
+
+ /*
+ * Mark the blocks used for the inode table
+ */
+ if (ext2fs_inode_table_loc(fs, i)) {
+ for (j = 0, b = ext2fs_inode_table_loc(fs, i);
+ j < fs->inode_blocks_per_group;
+ j++, b++) {
+ if (ext2fs_test_block_bitmap2(ctx->block_found_map,
+ b)) {
+ pctx.blk = b;
+ if (!ctx->invalid_inode_table_flag[i] &&
+ fix_problem(ctx,
+ PR_1_ITABLE_CONFLICT, &pctx)) {
+ ctx->invalid_inode_table_flag[i]++;
+ ctx->invalid_bitmaps++;
+ }
+ } else {
+ ext2fs_mark_block_bitmap2(
+ ctx->block_found_map, b);
+ ext2fs_mark_block_bitmap2(
+ ctx->block_metadata_map, b);
+ }
+ }
+ }
+
+ /*
+ * Mark block used for the block bitmap
+ */
+ if (ext2fs_block_bitmap_loc(fs, i)) {
+ if (ext2fs_test_block_bitmap2(ctx->block_found_map,
+ ext2fs_block_bitmap_loc(fs, i))) {
+ pctx.blk = ext2fs_block_bitmap_loc(fs, i);
+ if (fix_problem(ctx, PR_1_BB_CONFLICT, &pctx)) {
+ ctx->invalid_block_bitmap_flag[i]++;
+ ctx->invalid_bitmaps++;
+ }
+ } else {
+ ext2fs_mark_block_bitmap2(ctx->block_found_map,
+ ext2fs_block_bitmap_loc(fs, i));
+ ext2fs_mark_block_bitmap2(ctx->block_metadata_map,
+ ext2fs_block_bitmap_loc(fs, i));
+ }
+ }
+ /*
+ * Mark block used for the inode bitmap
+ */
+ if (ext2fs_inode_bitmap_loc(fs, i)) {
+ if (ext2fs_test_block_bitmap2(ctx->block_found_map,
+ ext2fs_inode_bitmap_loc(fs, i))) {
+ pctx.blk = ext2fs_inode_bitmap_loc(fs, i);
+ if (fix_problem(ctx, PR_1_IB_CONFLICT, &pctx)) {
+ ctx->invalid_inode_bitmap_flag[i]++;
+ ctx->invalid_bitmaps++;
+ }
+ } else {
+ ext2fs_mark_block_bitmap2(ctx->block_metadata_map,
+ ext2fs_inode_bitmap_loc(fs, i));
+ ext2fs_mark_block_bitmap2(ctx->block_found_map,
+ ext2fs_inode_bitmap_loc(fs, i));
+ }
+ }
+ }
+}
+
+/*
+ * These subroutines short circuits ext2fs_get_blocks and
+ * ext2fs_check_directory; we use them since we already have the inode
+ * structure, so there's no point in letting the ext2fs library read
+ * the inode again.
+ */
+static errcode_t pass1_get_blocks(ext2_filsys fs, ext2_ino_t ino,
+ blk_t *blocks)
+{
+ e2fsck_t ctx = (e2fsck_t) fs->priv_data;
+ int i;
+
+ if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
+ return EXT2_ET_CALLBACK_NOTHANDLED;
+
+ for (i=0; i < EXT2_N_BLOCKS; i++)
+ blocks[i] = ctx->stashed_inode->i_block[i];
+ return 0;
+}
+
+static errcode_t pass1_read_inode(ext2_filsys fs, ext2_ino_t ino,
+ struct ext2_inode *inode)
+{
+ e2fsck_t ctx = (e2fsck_t) fs->priv_data;
+
+ if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
+ return EXT2_ET_CALLBACK_NOTHANDLED;
+ *inode = *ctx->stashed_inode;
+ return 0;
+}
+
+static errcode_t pass1_write_inode(ext2_filsys fs, ext2_ino_t ino,
+ struct ext2_inode *inode)
+{
+ e2fsck_t ctx = (e2fsck_t) fs->priv_data;
+
+ if ((ino == ctx->stashed_ino) && ctx->stashed_inode &&
+ (inode != ctx->stashed_inode))
+ *ctx->stashed_inode = *inode;
+ return EXT2_ET_CALLBACK_NOTHANDLED;
+}
+
+static errcode_t pass1_check_directory(ext2_filsys fs, ext2_ino_t ino)
+{
+ e2fsck_t ctx = (e2fsck_t) fs->priv_data;
+
+ if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
+ return EXT2_ET_CALLBACK_NOTHANDLED;
+
+ if (!LINUX_S_ISDIR(ctx->stashed_inode->i_mode))
+ return EXT2_ET_NO_DIRECTORY;
+ return 0;
+}
+
+static errcode_t e2fsck_get_alloc_block(ext2_filsys fs, blk64_t goal,
+ blk64_t *ret)
+{
+ e2fsck_t ctx = (e2fsck_t) fs->priv_data;
+ errcode_t retval;
+ blk64_t new_block;
+
+ if (ctx->block_found_map) {
+ retval = ext2fs_new_block2(fs, goal, ctx->block_found_map,
+ &new_block);
+ if (retval)
+ return retval;
+ if (fs->block_map) {
+ ext2fs_mark_block_bitmap2(fs->block_map, new_block);
+ ext2fs_mark_bb_dirty(fs);
+ }
+ } else {
+ if (!fs->block_map) {
+ retval = ext2fs_read_block_bitmap(fs);
+ if (retval)
+ return retval;
+ }
+
+ retval = ext2fs_new_block2(fs, goal, fs->block_map, &new_block);
+ if (retval)
+ return retval;
+ }
+
+ *ret = new_block;
+ return (0);
+}
+
+static errcode_t e2fsck_new_range(ext2_filsys fs, int flags, blk64_t goal,
+ blk64_t len, blk64_t *pblk, blk64_t *plen)
+{
+ e2fsck_t ctx = (e2fsck_t) fs->priv_data;
+ errcode_t retval;
+
+ if (ctx->block_found_map)
+ return ext2fs_new_range(fs, flags, goal, len,
+ ctx->block_found_map, pblk, plen);
+
+ if (!fs->block_map) {
+ retval = ext2fs_read_block_bitmap(fs);
+ if (retval)
+ return retval;
+ }
+
+ return ext2fs_new_range(fs, flags, goal, len, fs->block_map,
+ pblk, plen);
+}
+
+static void e2fsck_block_alloc_stats(ext2_filsys fs, blk64_t blk, int inuse)
+{
+ e2fsck_t ctx = (e2fsck_t) fs->priv_data;
+
+ /* Never free a critical metadata block */
+ if (ctx->block_found_map &&
+ ctx->block_metadata_map &&
+ inuse < 0 &&
+ ext2fs_test_block_bitmap2(ctx->block_metadata_map, blk))
+ return;
+
+ if (ctx->block_found_map) {
+ if (inuse > 0)
+ ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
+ else
+ ext2fs_unmark_block_bitmap2(ctx->block_found_map, blk);
+ }
+}
+
+static void e2fsck_block_alloc_stats_range(ext2_filsys fs, blk64_t blk,
+ blk_t num, int inuse)
+{
+ e2fsck_t ctx = (e2fsck_t) fs->priv_data;
+
+ /* Never free a critical metadata block */
+ if (ctx->block_found_map &&
+ ctx->block_metadata_map &&
+ inuse < 0 &&
+ ext2fs_test_block_bitmap_range2(ctx->block_metadata_map, blk, num))
+ return;
+
+ if (ctx->block_found_map) {
+ if (inuse > 0)
+ ext2fs_mark_block_bitmap_range2(ctx->block_found_map,
+ blk, num);
+ else
+ ext2fs_unmark_block_bitmap_range2(ctx->block_found_map,
+ blk, num);
+ }
+}
+
+void e2fsck_use_inode_shortcuts(e2fsck_t ctx, int use_shortcuts)
+{
+ ext2_filsys fs = ctx->fs;
+
+ if (use_shortcuts) {
+ fs->get_blocks = pass1_get_blocks;
+ fs->check_directory = pass1_check_directory;
+ fs->read_inode = pass1_read_inode;
+ fs->write_inode = pass1_write_inode;
+ ctx->stashed_ino = 0;
+ } else {
+ fs->get_blocks = 0;
+ fs->check_directory = 0;
+ fs->read_inode = 0;
+ fs->write_inode = 0;
+ }
+}
+
+void e2fsck_intercept_block_allocations(e2fsck_t ctx)
+{
+ ext2fs_set_alloc_block_callback(ctx->fs, e2fsck_get_alloc_block, 0);
+ ext2fs_set_block_alloc_stats_callback(ctx->fs,
+ e2fsck_block_alloc_stats, 0);
+ ext2fs_set_new_range_callback(ctx->fs, e2fsck_new_range, NULL);
+ ext2fs_set_block_alloc_stats_range_callback(ctx->fs,
+ e2fsck_block_alloc_stats_range, NULL);
+}