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-rw-r--r--e2fsprogs/e2fsck/pass1.c2122
1 files changed, 2122 insertions, 0 deletions
diff --git a/e2fsprogs/e2fsck/pass1.c b/e2fsprogs/e2fsck/pass1.c
new file mode 100644
index 0000000..8d01cae
--- /dev/null
+++ b/e2fsprogs/e2fsck/pass1.c
@@ -0,0 +1,2122 @@
+/*
+ * 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 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)
+ *
+ * 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. (Althogh 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 <string.h>
+#include <time.h>
+#ifdef HAVE_ERRNO_H
+#include <errno.h>
+#endif
+
+#include "e2fsck.h"
+#include <ext2fs/ext2_ext_attr.h>
+
+#include "problem.h"
+
+#ifdef NO_INLINE_FUNCS
+#define _INLINE_
+#else
+#define _INLINE_ inline
+#endif
+
+static int process_block(ext2_filsys fs, blk_t *blocknr,
+ e2_blkcnt_t blockcnt, blk_t ref_blk,
+ int ref_offset, void *priv_data);
+static int process_bad_block(ext2_filsys fs, blk_t *block_nr,
+ e2_blkcnt_t blockcnt, blk_t ref_blk,
+ int ref_offset, void *priv_data);
+static void check_blocks(e2fsck_t ctx, struct problem_context *pctx,
+ char *block_buf);
+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, 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, blk_t block); */
+
+extern void e2fsck_write_inode_full(e2fsck_t ctx, unsigned long ino,
+ struct ext2_inode * inode, int bufsize,
+ const char *proc);
+
+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;
+ blk_t num_blocks;
+ blk_t max_blocks;
+ e2_blkcnt_t last_block;
+ int num_illegal_blocks;
+ blk_t previous_block;
+ struct ext2_inode *inode;
+ struct problem_context *pctx;
+ ext2fs_block_bitmap fs_meta_blocks;
+ e2fsck_t ctx;
+};
+
+struct process_inode_block {
+ ext2_ino_t ino;
+ struct ext2_inode 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];
+
+/*
+ * Free all memory allocated by pass1 in preparation for restarting
+ * things.
+ */
+static void unwind_pass1(ext2_filsys fs EXT2FS_ATTR((unused)))
+{
+ ext2fs_free_mem(&inodes_to_process);
+ inodes_to_process = 0;
+}
+
+/*
+ * 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, struct ext2_inode *inode)
+{
+ int i;
+
+ /*
+ * If i_blocks is non-zero, or the index flag is set, then
+ * this is a bogus device/fifo/socket
+ */
+ if ((ext2fs_inode_data_blocks(fs, inode) != 0) ||
+ (inode->i_flags & EXT2_INDEX_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, struct ext2_inode *inode,
+ char *buf)
+{
+ unsigned int len;
+ int i;
+ blk_t blocks;
+
+ if ((inode->i_size_high || inode->i_size == 0) ||
+ (inode->i_flags & EXT2_INDEX_FL))
+ return 0;
+
+ blocks = ext2fs_inode_data_blocks(fs, inode);
+ if (blocks) {
+ if ((inode->i_size >= fs->blocksize) ||
+ (blocks != fs->blocksize >> 9) ||
+ (inode->i_block[0] < fs->super->s_first_data_block) ||
+ (inode->i_block[0] >= fs->super->s_blocks_count))
+ return 0;
+
+ for (i = 1; i < EXT2_N_BLOCKS; i++)
+ if (inode->i_block[i])
+ return 0;
+
+ if (io_channel_read_blk(fs->io, inode->i_block[0], 1, buf))
+ return 0;
+
+ len = strnlen(buf, fs->blocksize);
+ if (len == fs->blocksize)
+ return 0;
+ } else {
+ if (inode->i_size >= sizeof(inode->i_block))
+ return 0;
+
+ len = strnlen((char *)inode->i_block, sizeof(inode->i_block));
+ if (len == sizeof(inode->i_block))
+ return 0;
+ }
+ if (len != inode->i_size)
+ return 0;
+ return 1;
+}
+
+/*
+ * 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 ((inode->i_size == 0) && (inode->i_size_high == 0))
+ return;
+
+ if (!fix_problem(ctx, PR_1_SET_NONZSIZE, pctx))
+ return;
+
+ inode->i_size = 0;
+ inode->i_size_high = 0;
+ e2fsck_write_inode(ctx, pctx->ino, pctx->inode, "pass1");
+}
+
+static void check_ea_in_inode(e2fsck_t ctx, struct problem_context *pctx)
+{
+ struct ext2_super_block *sb = ctx->fs->super;
+ struct ext2_inode_large *inode;
+ struct ext2_ext_attr_entry *entry;
+ char *start, *end;
+ int storage_size, remain, offs;
+ int problem = 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;
+ start = ((char *) inode) + EXT2_GOOD_OLD_INODE_SIZE +
+ inode->i_extra_isize + sizeof(__u32);
+ end = (char *) inode + EXT2_INODE_SIZE(ctx->fs->super);
+ entry = (struct ext2_ext_attr_entry *) start;
+
+ /* scan all entry's headers first */
+
+ /* take finish entry 0UL into account */
+ remain = storage_size - sizeof(__u32);
+ offs = end - start;
+
+ while (!EXT2_EXT_IS_LAST_ENTRY(entry)) {
+
+ /* 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);
+
+ /* check value size */
+ if (entry->e_value_size == 0 || entry->e_value_size > remain) {
+ pctx->num = entry->e_value_size;
+ problem = PR_1_ATTR_VALUE_SIZE;
+ goto fix;
+ }
+
+ /* check value placement */
+ if (entry->e_value_offs +
+ EXT2_XATTR_SIZE(entry->e_value_size) != offs) {
+ printf("(entry->e_value_offs + entry->e_value_size: %d, offs: %d)\n", entry->e_value_offs + entry->e_value_size, offs);
+ pctx->num = entry->e_value_offs;
+ problem = PR_1_ATTR_VALUE_OFFSET;
+ goto fix;
+ }
+
+ /* e_value_block must be 0 in inode's ea */
+ if (entry->e_value_block != 0) {
+ pctx->num = entry->e_value_block;
+ problem = PR_1_ATTR_VALUE_BLOCK;
+ goto fix;
+ }
+
+ /* e_hash must be 0 in inode's ea */
+ if (entry->e_hash != 0) {
+ pctx->num = entry->e_hash;
+ problem = PR_1_ATTR_HASH;
+ goto fix;
+ }
+
+ remain -= entry->e_value_size;
+ offs -= EXT2_XATTR_SIZE(entry->e_value_size);
+
+ entry = EXT2_EXT_ATTR_NEXT(entry);
+ }
+fix:
+ /*
+ * it seems like a corruption. it's very unlikely we could repair
+ * EA(s) in automatic fashion -bzzz
+ */
+#if 0
+ problem = PR_1_ATTR_HASH;
+#endif
+ if (problem == 0 || !fix_problem(ctx, problem, pctx))
+ return;
+
+ /* simple remove all possible EA(s) */
+ *((__u32 *)start) = 0UL;
+ e2fsck_write_inode_full(ctx, pctx->ino, (struct ext2_inode *)inode,
+ EXT2_INODE_SIZE(sb), "pass1");
+}
+
+static void check_inode_extra_space(e2fsck_t ctx, struct problem_context *pctx)
+{
+ struct ext2_super_block *sb = ctx->fs->super;
+ struct ext2_inode_large *inode;
+ __u32 *eamagic;
+ int min, max;
+
+ 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_pad1 at least */
+ min = sizeof(inode->i_extra_isize) + sizeof(inode->i_pad1);
+ 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)) {
+ if (!fix_problem(ctx, PR_1_EXTRA_ISIZE, pctx))
+ return;
+ inode->i_extra_isize = min;
+ e2fsck_write_inode_full(ctx, pctx->ino, pctx->inode,
+ EXT2_INODE_SIZE(sb), "pass1");
+ 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);
+ }
+}
+
+void e2fsck_pass1(e2fsck_t ctx)
+{
+ int i;
+ __u64 max_sizes;
+ ext2_filsys fs = ctx->fs;
+ ext2_ino_t ino;
+ struct ext2_inode *inode;
+ ext2_inode_scan scan;
+ char *block_buf;
+#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;
+ int imagic_fs;
+ int busted_fs_time = 0;
+ int inode_size;
+
+#ifdef RESOURCE_TRACK
+ init_resource_track(&rtrack);
+#endif
+ clear_problem_context(&pctx);
+
+ if (!(ctx->options & E2F_OPT_PREEN))
+ fix_problem(ctx, PR_1_PASS_HEADER, &pctx);
+
+ if ((fs->super->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) &&
+ !(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)) - 1;
+ ext2_max_sizes[i - EXT2_MIN_BLOCK_LOG_SIZE] = max_sizes;
+ }
+#undef EXT2_BPP
+
+ imagic_fs = (sb->s_feature_compat & EXT2_FEATURE_COMPAT_IMAGIC_INODES);
+
+ /*
+ * Allocate bitmaps structures
+ */
+ pctx.errcode = ext2fs_allocate_inode_bitmap(fs, _("in-use inode 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 = ext2fs_allocate_inode_bitmap(fs,
+ _("directory inode 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 = ext2fs_allocate_inode_bitmap(fs,
+ _("regular file inode 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 = ext2fs_allocate_block_bitmap(fs, _("in-use block 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 = ext2fs_create_icount2(fs, 0, 0, 0,
+ &ctx->inode_link_info);
+ if (pctx.errcode) {
+ fix_problem(ctx, PR_1_ALLOCATE_ICOUNT, &pctx);
+ ctx->flags |= E2F_FLAG_ABORT;
+ return;
+ }
+ inode_size = EXT2_INODE_SIZE(fs->super);
+ inode = (struct ext2_inode *)
+ e2fsck_allocate_memory(ctx, inode_size, "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;
+ return;
+ }
+
+ /*
+ * 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);
+ block_buf = (char *) e2fsck_allocate_memory(ctx, fs->blocksize * 3,
+ "block interate buffer");
+ e2fsck_use_inode_shortcuts(ctx, 1);
+ ehandler_operation(_("doing inode scan"));
+ pctx.errcode = ext2fs_open_inode_scan(fs, ctx->inode_buffer_blocks,
+ &scan);
+ if (pctx.errcode) {
+ fix_problem(ctx, PR_1_ISCAN_ERROR, &pctx);
+ ctx->flags |= E2F_FLAG_ABORT;
+ return;
+ }
+ ext2fs_inode_scan_flags(scan, EXT2_SF_SKIP_MISSING_ITABLE, 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)
+ if ((ctx->progress)(ctx, 1, 0, ctx->fs->group_desc_count))
+ return;
+ if (fs->super->s_wtime < fs->super->s_inodes_count)
+ busted_fs_time = 1;
+
+ while (1) {
+ pctx.errcode = ext2fs_get_next_inode_full(scan, &ino,
+ inode, inode_size);
+ if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
+ return;
+ if (pctx.errcode == EXT2_ET_BAD_BLOCK_IN_INODE_TABLE) {
+ if (!ctx->inode_bb_map)
+ alloc_bb_map(ctx);
+ ext2fs_mark_inode_bitmap(ctx->inode_bb_map, ino);
+ ext2fs_mark_inode_bitmap(ctx->inode_used_map, ino);
+ continue;
+ }
+ if (pctx.errcode) {
+ fix_problem(ctx, PR_1_ISCAN_ERROR, &pctx);
+ ctx->flags |= E2F_FLAG_ABORT;
+ return;
+ }
+ if (!ino)
+ break;
+ pctx.ino = ino;
+ pctx.inode = inode;
+ ctx->stashed_ino = ino;
+ 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;
+ return;
+ }
+ }
+ if (ino == EXT2_BAD_INO) {
+ struct process_block_struct pb;
+
+ 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;
+ return;
+ }
+ pb.ino = EXT2_BAD_INO;
+ pb.num_blocks = pb.last_block = 0;
+ 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_iterate2(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;
+ return;
+ }
+ if (pb.bbcheck)
+ if (!fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK_PROMPT, &pctx)) {
+ ctx->flags |= E2F_FLAG_ABORT;
+ return;
+ }
+ ext2fs_mark_inode_bitmap(ctx->inode_used_map, ino);
+ clear_problem_context(&pctx);
+ continue;
+ } else if (ino == EXT2_ROOT_INO) {
+ /*
+ * Make sure the root inode is a directory; if
+ * not, offer to clear it. It will be
+ * regnerated in pass #3.
+ */
+ if (!LINUX_S_ISDIR(inode->i_mode)) {
+ if (fix_problem(ctx, PR_1_ROOT_NO_DIR, &pctx)) {
+ inode->i_dtime = time(0);
+ inode->i_links_count = 0;
+ ext2fs_icount_store(ctx->inode_link_info,
+ ino, 0);
+ e2fsck_write_inode(ctx, ino, inode,
+ "pass1");
+ }
+
+ }
+ /*
+ * 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");
+ }
+ }
+ } else if (ino == EXT2_JOURNAL_INO) {
+ ext2fs_mark_inode_bitmap(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");
+ }
+ check_blocks(ctx, &pctx, block_buf);
+ continue;
+ }
+ if ((inode->i_links_count || inode->i_blocks ||
+ 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");
+ }
+ } else if (ino < EXT2_FIRST_INODE(fs->super)) {
+ int problem = 0;
+
+ ext2fs_mark_inode_bitmap(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");
+ }
+ }
+ check_blocks(ctx, &pctx, block_buf);
+ continue;
+ }
+ /*
+ * 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 && !busted_fs_time &&
+ 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 : time(0);
+ e2fsck_write_inode(ctx, ino, inode,
+ "pass1");
+ }
+ }
+
+ /*
+ * This code assumes that deleted inodes have
+ * i_links_count set to 0.
+ */
+ if (!inode->i_links_count) {
+ if (!inode->i_dtime && inode->i_mode) {
+ if (fix_problem(ctx,
+ PR_1_ZERO_DTIME, &pctx)) {
+ inode->i_dtime = time(0);
+ e2fsck_write_inode(ctx, ino, inode,
+ "pass1");
+ }
+ }
+ 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");
+ }
+ }
+
+ ext2fs_mark_inode_bitmap(ctx->inode_used_map, ino);
+ switch (fs->super->s_creator_os) {
+ case EXT2_OS_LINUX:
+ frag = inode->osd2.linux2.l_i_frag;
+ fsize = inode->osd2.linux2.l_i_fsize;
+ break;
+ case EXT2_OS_HURD:
+ frag = inode->osd2.hurd2.h_i_frag;
+ fsize = inode->osd2.hurd2.h_i_fsize;
+ break;
+ case EXT2_OS_MASIX:
+ frag = inode->osd2.masix2.m_i_frag;
+ fsize = inode->osd2.masix2.m_i_fsize;
+ break;
+ default:
+ frag = fsize = 0;
+ }
+
+ if (inode->i_faddr || frag || fsize ||
+ (LINUX_S_ISDIR(inode->i_mode) && inode->i_dir_acl))
+ 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_bitmap(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");
+ }
+ }
+ }
+
+ check_inode_extra_space(ctx, &pctx);
+
+ if (LINUX_S_ISDIR(inode->i_mode)) {
+ ext2fs_mark_inode_bitmap(ctx->inode_dir_map, ino);
+ e2fsck_add_dir_info(ctx, ino, 0);
+ ctx->fs_directory_count++;
+ } else if (LINUX_S_ISREG (inode->i_mode)) {
+ ext2fs_mark_inode_bitmap(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_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_immutable(ctx, &pctx);
+ check_size(ctx, &pctx);
+ ctx->fs_blockdev_count++;
+ } else if (LINUX_S_ISLNK (inode->i_mode) &&
+ e2fsck_pass1_check_symlink(fs, inode, block_buf)) {
+ check_immutable(ctx, &pctx);
+ ctx->fs_symlinks_count++;
+ if (ext2fs_inode_data_blocks(fs, inode) == 0) {
+ ctx->fs_fast_symlinks_count++;
+ check_blocks(ctx, &pctx, block_buf);
+ continue;
+ }
+ }
+ else if (LINUX_S_ISFIFO (inode->i_mode) &&
+ e2fsck_pass1_check_device_inode(fs, inode)) {
+ 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_immutable(ctx, &pctx);
+ check_size(ctx, &pctx);
+ ctx->fs_sockets_count++;
+ } else
+ mark_inode_bad(ctx, ino);
+ 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_block[EXT2_IND_BLOCK] ||
+ inode->i_block[EXT2_DIND_BLOCK] ||
+ inode->i_block[EXT2_TIND_BLOCK] ||
+ inode->i_file_acl) {
+ inodes_to_process[process_inode_count].ino = ino;
+ inodes_to_process[process_inode_count].inode = *inode;
+ process_inode_count++;
+ } else
+ check_blocks(ctx, &pctx, block_buf);
+
+ if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
+ return;
+
+ if (process_inode_count >= ctx->process_inode_size) {
+ process_inodes(ctx, block_buf);
+
+ if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
+ return;
+ }
+ }
+ process_inodes(ctx, block_buf);
+ ext2fs_close_inode_scan(scan);
+ ehandler_operation(0);
+
+ /*
+ * 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->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;
+ }
+
+ if (ctx->flags & E2F_FLAG_RESIZE_INODE) {
+ ext2fs_block_bitmap save_bmap;
+
+ save_bmap = fs->block_map;
+ fs->block_map = ctx->block_found_map;
+ clear_problem_context(&pctx);
+ pctx.errcode = ext2fs_create_resize_inode(fs);
+ if (pctx.errcode) {
+ fix_problem(ctx, PR_1_RESIZE_INODE_CREATE, &pctx);
+ /* Should never get here */
+ ctx->flags |= E2F_FLAG_ABORT;
+ return;
+ }
+ fs->block_map = save_bmap;
+ 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;
+ unwind_pass1(fs);
+ goto endit;
+ }
+
+ 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);
+ }
+ ext2fs_free_mem(&inodes_to_process);
+endit:
+ e2fsck_use_inode_shortcuts(ctx, 0);
+
+ ext2fs_free_mem(&block_buf);
+ ext2fs_free_mem(&inode);
+
+#ifdef RESOURCE_TRACK
+ if (ctx->options & E2F_OPT_TIME2) {
+ e2fsck_clear_progbar(ctx);
+ print_resource_track(_("Pass 1"), &rtrack);
+ }
+#endif
+}
+
+/*
+ * 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 = &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);
+ 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)
+ ret = ib_a->inode.i_file_acl - ib_b->inode.i_file_acl;
+ return ret;
+}
+
+/*
+ * Mark an inode as being bad in some what
+ */
+static void mark_inode_bad(e2fsck_t ctx, ino_t ino)
+{
+ struct problem_context pctx;
+
+ if (!ctx->inode_bad_map) {
+ clear_problem_context(&pctx);
+
+ pctx.errcode = ext2fs_allocate_inode_bitmap(ctx->fs,
+ _("bad inode 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_bitmap(ctx->inode_bad_map, ino);
+}
+
+
+/*
+ * 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 = ext2fs_allocate_inode_bitmap(ctx->fs,
+ _("inode in bad block 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 = ext2fs_allocate_inode_bitmap(ctx->fs,
+ _("imagic inode 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, blk_t block)
+{
+ struct problem_context pctx;
+
+ clear_problem_context(&pctx);
+
+ if (ext2fs_fast_test_block_bitmap(ctx->block_found_map, block)) {
+ if (!ctx->block_dup_map) {
+ pctx.errcode = ext2fs_allocate_block_bitmap(ctx->fs,
+ _("multiply claimed block 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_bitmap(ctx->block_dup_map, block);
+ } else {
+ ext2fs_fast_mark_block_bitmap(ctx->block_found_map, block);
+ }
+}
+
+/*
+ * 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;
+ blk_t blk;
+ __u32 should_be;
+ int 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_attr(fs, blk, block_buf);
+ 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 * count;
+ pctx.num = should_be;
+ if (fix_problem(ctx, PR_1_EXTATTR_REFCOUNT, &pctx)) {
+ header->h_refcount = should_be;
+ pctx.errcode = ext2fs_write_ext_attr(fs, blk,
+ block_buf);
+ if (pctx.errcode) {
+ fix_problem(ctx, PR_1_EXTATTR_WRITE, &pctx);
+ continue;
+ }
+ }
+ }
+}
+
+/*
+ * Handle processing the extended attribute blocks
+ */
+static int check_ext_attr(e2fsck_t ctx, struct problem_context *pctx,
+ char *block_buf)
+{
+ ext2_filsys fs = ctx->fs;
+ ext2_ino_t ino = pctx->ino;
+ struct ext2_inode *inode = pctx->inode;
+ blk_t blk;
+ char * end;
+ struct ext2_ext_attr_header *header;
+ struct ext2_ext_attr_entry *entry;
+ int count;
+ region_t region;
+
+ blk = inode->i_file_acl;
+ 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 (!(fs->super->s_feature_compat & EXT2_FEATURE_COMPAT_EXT_ATTR) ||
+ (blk < fs->super->s_first_data_block) ||
+ (blk >= fs->super->s_blocks_count)) {
+ mark_inode_bad(ctx, ino);
+ return 0;
+ }
+
+ /* If ea bitmap hasn't been allocated, create it */
+ if (!ctx->block_ea_map) {
+ pctx->errcode = ext2fs_allocate_block_bitmap(fs,
+ _("ext attr block 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_bitmap(ctx->block_ea_map, blk)) {
+ 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_attr(fs, blk, block_buf);
+ if (pctx->errcode && fix_problem(ctx, PR_1_READ_EA_BLOCK, pctx))
+ goto clear_extattr;
+ header = (struct ext2_ext_attr_header *) block_buf;
+ pctx->blk = inode->i_file_acl;
+ 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;
+ }
+
+ region = region_create(0, fs->blocksize);
+ if (!region) {
+ fix_problem(ctx, PR_1_EA_ALLOC_REGION, 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;
+ }
+
+ entry = (struct ext2_ext_attr_entry *)(header+1);
+ end = block_buf + fs->blocksize;
+ while ((char *)entry < end && *(__u32 *)entry) {
+ 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;
+ }
+ 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;
+ }
+ if (entry->e_value_block != 0) {
+ if (fix_problem(ctx, PR_1_EA_BAD_VALUE, pctx))
+ goto clear_extattr;
+ }
+ 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;
+ }
+ 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);
+
+ count = header->h_refcount - 1;
+ if (count)
+ ea_refcount_store(ctx->refcount, blk, count);
+ mark_block_used(ctx, blk);
+ ext2fs_fast_mark_block_bitmap(ctx->block_ea_map, blk);
+
+ return 1;
+
+clear_extattr:
+ inode->i_file_acl = 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 EXT2FS_ATTR((unused)),
+ struct ext2_inode *inode,
+ char *block_buf)
+{
+ struct ext2_dx_root_info *root;
+ ext2_filsys fs = ctx->fs;
+ errcode_t retval;
+ blk_t blk;
+
+ if ((!LINUX_S_ISDIR(inode->i_mode) &&
+ fix_problem(ctx, PR_1_HTREE_NODIR, pctx)) ||
+ (!(fs->super->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) &&
+ fix_problem(ctx, PR_1_HTREE_SET, pctx)))
+ return 1;
+
+ blk = inode->i_block[0];
+ if (((blk == 0) ||
+ (blk < fs->super->s_first_data_block) ||
+ (blk >= fs->super->s_blocks_count)) &&
+ fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
+ return 1;
+
+ retval = io_channel_read_blk(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) &&
+ fix_problem(ctx, PR_1_HTREE_HASHV, 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 ((root->indirect_levels > 1) &&
+ fix_problem(ctx, PR_1_HTREE_DEPTH, pctx))
+ return 1;
+
+ return 0;
+}
+
+/*
+ * 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)
+{
+ ext2_filsys fs = ctx->fs;
+ struct process_block_struct pb;
+ ext2_ino_t ino = pctx->ino;
+ struct ext2_inode *inode = pctx->inode;
+ int bad_size = 0;
+ int dirty_inode = 0;
+ __u64 size;
+
+ pb.ino = ino;
+ pb.num_blocks = 0;
+ pb.last_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 = 1 << (31 - fs->super->s_log_block_size);
+ pb.inode = inode;
+ pb.pctx = pctx;
+ pb.ctx = ctx;
+ pctx->ino = ino;
+ pctx->errcode = 0;
+
+ if (inode->i_flags & EXT2_COMPRBLK_FL) {
+ if (fs->super->s_feature_incompat &
+ EXT2_FEATURE_INCOMPAT_COMPRESSION)
+ pb.compressed = 1;
+ else {
+ if (fix_problem(ctx, PR_1_COMPR_SET, pctx)) {
+ inode->i_flags &= ~EXT2_COMPRBLK_FL;
+ dirty_inode++;
+ }
+ }
+ }
+
+ if (inode->i_file_acl && check_ext_attr(ctx, pctx, block_buf))
+ pb.num_blocks++;
+
+ if (ext2fs_inode_has_valid_blocks(inode))
+ pctx->errcode = ext2fs_block_iterate2(fs, ino,
+ pb.is_dir ? BLOCK_FLAG_HOLE : 0,
+ block_buf, process_block, &pb);
+ 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)
+ ctx->fs_fragmented++;
+
+ if (pb.clear) {
+ inode->i_links_count = 0;
+ ext2fs_icount_store(ctx->inode_link_info, ino, 0);
+ inode->i_dtime = time(0);
+ dirty_inode++;
+ ext2fs_unmark_inode_bitmap(ctx->inode_dir_map, ino);
+ ext2fs_unmark_inode_bitmap(ctx->inode_reg_map, ino);
+ ext2fs_unmark_inode_bitmap(ctx->inode_used_map, ino);
+ /*
+ * The inode was probably partially accounted for
+ * before processing was aborted, so we need to
+ * restart the pass 1 scan.
+ */
+ ctx->flags |= E2F_FLAG_RESTART;
+ goto out;
+ }
+
+ 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 {
+#ifdef ENABLE_HTREE
+ e2fsck_add_dx_dir(ctx, ino, pb.last_block+1);
+#endif
+ }
+ }
+ if (ctx->dirs_to_hash && pb.is_dir &&
+ !(inode->i_flags & EXT2_INDEX_FL) &&
+ ((inode->i_size / fs->blocksize) >= 3))
+ ext2fs_u32_list_add(ctx->dirs_to_hash, ino);
+
+ if (!pb.num_blocks && pb.is_dir) {
+ if (fix_problem(ctx, PR_1_ZERO_LENGTH_DIR, pctx)) {
+ inode->i_links_count = 0;
+ ext2fs_icount_store(ctx->inode_link_info, ino, 0);
+ inode->i_dtime = time(0);
+ dirty_inode++;
+ ext2fs_unmark_inode_bitmap(ctx->inode_dir_map, ino);
+ ext2fs_unmark_inode_bitmap(ctx->inode_reg_map, ino);
+ ext2fs_unmark_inode_bitmap(ctx->inode_used_map, ino);
+ ctx->fs_directory_count--;
+ goto out;
+ }
+ }
+
+ pb.num_blocks *= (fs->blocksize / 512);
+#if 0
+ printf("inode %u, i_size = %lu, last_block = %lld, i_blocks=%lu, num_blocks = %lu\n",
+ ino, inode->i_size, pb.last_block, inode->i_blocks,
+ pb.num_blocks);
+#endif
+ if (pb.is_dir) {
+ int nblock = inode->i_size >> EXT2_BLOCK_SIZE_BITS(fs->super);
+ 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 {
+ size = EXT2_I_SIZE(inode);
+ if ((pb.last_block >= 0) &&
+ (size < (__u64) pb.last_block * fs->blocksize))
+ bad_size = 3;
+ else if (size > ext2_max_sizes[fs->super->s_log_block_size])
+ bad_size = 4;
+ }
+ /* i_size for symlinks is checked elsewhere */
+ if (bad_size && !LINUX_S_ISLNK(inode->i_mode)) {
+ pctx->num = (pb.last_block+1) * fs->blocksize;
+ if (fix_problem(ctx, PR_1_BAD_I_SIZE, pctx)) {
+ inode->i_size = pctx->num;
+ if (!LINUX_S_ISDIR(inode->i_mode))
+ inode->i_size_high = pctx->num >> 32;
+ dirty_inode++;
+ }
+ pctx->num = 0;
+ }
+ if (LINUX_S_ISREG(inode->i_mode) &&
+ (inode->i_size_high || inode->i_size & 0x80000000UL))
+ ctx->large_files++;
+ if (pb.num_blocks != inode->i_blocks) {
+ pctx->num = pb.num_blocks;
+ if (fix_problem(ctx, PR_1_BAD_I_BLOCKS, pctx)) {
+ inode->i_blocks = pb.num_blocks;
+ dirty_inode++;
+ }
+ pctx->num = 0;
+ }
+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, blk_t block)
+{
+ blk_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 >= fs->super->s_blocks_count) {
+ sprintf(problem, "> BLOCKS (%u)", fs->super->s_blocks_count);
+ 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 == fs->group_desc[i].bg_block_bitmap) {
+ sprintf(problem, "is the block bitmap of group %d", i);
+ break;
+ }
+ if (block == fs->group_desc[i].bg_inode_bitmap) {
+ sprintf(problem, "is the inode bitmap of group %d", i);
+ break;
+ }
+ if (block >= fs->group_desc[i].bg_inode_table &&
+ (block < fs->group_desc[i].bg_inode_table
+ + 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,
+ blk_t *block_nr,
+ e2_blkcnt_t blockcnt,
+ blk_t ref_block EXT2FS_ATTR((unused)),
+ int ref_offset EXT2FS_ATTR((unused)),
+ void *priv_data)
+{
+ struct process_block_struct *p;
+ struct problem_context *pctx;
+ blk_t blk = *block_nr;
+ int ret_code = 0;
+ int problem = 0;
+ e2fsck_t ctx;
+
+ p = (struct process_block_struct *) priv_data;
+ pctx = p->pctx;
+ ctx = p->ctx;
+
+ if (p->compressed && (blk == EXT2FS_COMPRESSED_BLKADDR)) {
+ /* todo: Check that the comprblk_fl is high, that the
+ blkaddr pattern looks right (all non-holes up to
+ first EXT2FS_COMPRESSED_BLKADDR, then all
+ EXT2FS_COMPRESSED_BLKADDR up to end of cluster),
+ that the feature_incompat bit is high, and that the
+ inode is a regular file. If we're doing a "full
+ check" (a concept introduced to e2fsck by e2compr,
+ meaning that we look at data blocks as well as
+ metadata) then call some library routine that
+ checks the compressed data. I'll have to think
+ about this, because one particularly important
+ problem to be able to fix is to recalculate the
+ cluster size if necessary. I think that perhaps
+ we'd better do most/all e2compr-specific checks
+ separately, after the non-e2compr checks. If not
+ doing a full check, it may be useful to test that
+ the personality is linux; e.g. if it isn't then
+ perhaps this really is just an illegal block. */
+ return 0;
+ }
+
+ if (blk == 0) {
+ if (p->is_dir == 0) {
+ /*
+ * Should never happen, since only directories
+ * get called with BLOCK_FLAG_HOLE
+ */
+#if DEBUG_E2FSCK
+ printf("process_block() called with blk == 0, "
+ "blockcnt=%d, inode %lu???\n",
+ blockcnt, p->ino);
+#endif
+ return 0;
+ }
+ if (blockcnt < 0)
+ return 0;
+ if (blockcnt * fs->blocksize < p->inode->i_size) {
+#if 0
+ printf("Missing block (#%d) in directory inode %lu!\n",
+ blockcnt, p->ino);
+#endif
+ goto mark_dir;
+ }
+ 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 (!HOLE_BLKADDR(p->previous_block)) {
+ if (p->previous_block+1 != blk)
+ p->fragmented = 1;
+ }
+ p->previous_block = blk;
+
+ if (p->is_dir && blockcnt > (1 << (21 - fs->super->s_log_block_size)))
+ 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 >= fs->super->s_blocks_count)
+ problem = PR_1_ILLEGAL_BLOCK_NUM;
+
+ if (problem) {
+ p->num_illegal_blocks++;
+ 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;
+ 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);
+ } else
+ mark_block_used(ctx, blk);
+ p->num_blocks++;
+ if (blockcnt >= 0)
+ p->last_block = blockcnt;
+mark_dir:
+ if (p->is_dir && (blockcnt >= 0)) {
+ pctx->errcode = ext2fs_add_dir_block(fs->dblist, p->ino,
+ blk, blockcnt);
+ if (pctx->errcode) {
+ pctx->blk = blk;
+ pctx->num = blockcnt;
+ 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,
+ blk_t *block_nr,
+ e2_blkcnt_t blockcnt,
+ blk_t ref_block EXT2FS_ATTR((unused)),
+ int ref_offset EXT2FS_ATTR((unused)),
+ void *priv_data)
+{
+ struct process_block_struct *p;
+ blk_t blk = *block_nr;
+ blk_t first_block;
+ dgrp_t i;
+ struct problem_context *pctx;
+ e2fsck_t ctx;
+
+ /*
+ * Note: This function processes blocks for the bad blocks
+ * inode, which is never compressed. So we don't use HOLE_BLKADDR().
+ */
+
+ 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 >= fs->super->s_blocks_count)) {
+ 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_bitmap(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_bitmap(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_bitmap(ctx->block_found_map, blk)) {
+ ext2fs_mark_block_bitmap(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 == fs->group_desc[i].bg_block_bitmap) {
+ if (fix_problem(ctx, PR_1_BB_BAD_BLOCK, pctx)) {
+ ctx->invalid_block_bitmap_flag[i]++;
+ ctx->invalid_bitmaps++;
+ }
+ return 0;
+ }
+ if (blk == fs->group_desc[i].bg_inode_bitmap) {
+ if (fix_problem(ctx, PR_1_IB_BAD_BLOCK, pctx)) {
+ ctx->invalid_inode_bitmap_flag[i]++;
+ ctx->invalid_bitmaps++;
+ }
+ return 0;
+ }
+ if ((blk >= fs->group_desc[i].bg_inode_table) &&
+ (blk < (fs->group_desc[i].bg_inode_table +
+ 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, blk_t first_block, int group,
+ const char *name, int num, blk_t *new_block)
+{
+ ext2_filsys fs = ctx->fs;
+ blk_t old_block = *new_block;
+ int i;
+ char *buf;
+ struct problem_context pctx;
+
+ clear_problem_context(&pctx);
+
+ pctx.group = group;
+ pctx.blk = old_block;
+ pctx.str = name;
+
+ pctx.errcode = ext2fs_get_free_blocks(fs, first_block,
+ first_block + fs->super->s_blocks_per_group,
+ 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);
+ 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);
+ 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_bitmap(ctx->block_found_map, (*new_block)+i);
+ if (old_block) {
+ pctx.errcode = io_channel_read_blk(fs->io,
+ old_block + i, 1, buf);
+ if (pctx.errcode)
+ fix_problem(ctx, PR_1_RELOC_READ_ERR, &pctx);
+ } else
+ memset(buf, 0, fs->blocksize);
+
+ pctx.blk = (*new_block) + i;
+ pctx.errcode = io_channel_write_blk(fs->io, pctx.blk,
+ 1, buf);
+ 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;
+ int first_block = fs->super->s_first_data_block;
+
+ for (i = 0; i < fs->group_desc_count; i++) {
+ if (ctx->invalid_block_bitmap_flag[i]) {
+ new_table_block(ctx, first_block, i, _("block bitmap"),
+ 1, &fs->group_desc[i].bg_block_bitmap);
+ }
+ if (ctx->invalid_inode_bitmap_flag[i]) {
+ new_table_block(ctx, first_block, i, _("inode bitmap"),
+ 1, &fs->group_desc[i].bg_inode_bitmap);
+ }
+ if (ctx->invalid_inode_table_flag[i]) {
+ new_table_block(ctx, first_block, i, _("inode table"),
+ fs->inode_blocks_per_group,
+ &fs->group_desc[i].bg_inode_table);
+ ctx->flags |= E2F_FLAG_RESTART;
+ }
+ first_block += fs->super->s_blocks_per_group;
+ }
+ 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;
+ blk_t block, b;
+ dgrp_t i;
+ int j;
+ struct problem_context pctx;
+
+ clear_problem_context(&pctx);
+
+ block = fs->super->s_first_data_block;
+ for (i = 0; i < fs->group_desc_count; i++) {
+ pctx.group = i;
+
+ ext2fs_reserve_super_and_bgd(fs, i, ctx->block_found_map);
+
+ /*
+ * Mark the blocks used for the inode table
+ */
+ if (fs->group_desc[i].bg_inode_table) {
+ for (j = 0, b = fs->group_desc[i].bg_inode_table;
+ j < fs->inode_blocks_per_group;
+ j++, b++) {
+ if (ext2fs_test_block_bitmap(ctx->block_found_map,
+ b)) {
+ pctx.blk = b;
+ if (fix_problem(ctx,
+ PR_1_ITABLE_CONFLICT, &pctx)) {
+ ctx->invalid_inode_table_flag[i]++;
+ ctx->invalid_bitmaps++;
+ }
+ } else {
+ ext2fs_mark_block_bitmap(ctx->block_found_map,
+ b);
+ }
+ }
+ }
+
+ /*
+ * Mark block used for the block bitmap
+ */
+ if (fs->group_desc[i].bg_block_bitmap) {
+ if (ext2fs_test_block_bitmap(ctx->block_found_map,
+ fs->group_desc[i].bg_block_bitmap)) {
+ pctx.blk = fs->group_desc[i].bg_block_bitmap;
+ if (fix_problem(ctx, PR_1_BB_CONFLICT, &pctx)) {
+ ctx->invalid_block_bitmap_flag[i]++;
+ ctx->invalid_bitmaps++;
+ }
+ } else {
+ ext2fs_mark_block_bitmap(ctx->block_found_map,
+ fs->group_desc[i].bg_block_bitmap);
+ }
+
+ }
+ /*
+ * Mark block used for the inode bitmap
+ */
+ if (fs->group_desc[i].bg_inode_bitmap) {
+ if (ext2fs_test_block_bitmap(ctx->block_found_map,
+ fs->group_desc[i].bg_inode_bitmap)) {
+ pctx.blk = fs->group_desc[i].bg_inode_bitmap;
+ if (fix_problem(ctx, PR_1_IB_CONFLICT, &pctx)) {
+ ctx->invalid_inode_bitmap_flag[i]++;
+ ctx->invalid_bitmaps++;
+ }
+ } else {
+ ext2fs_mark_block_bitmap(ctx->block_found_map,
+ fs->group_desc[i].bg_inode_bitmap);
+ }
+ }
+ block += fs->super->s_blocks_per_group;
+ }
+}
+
+/*
+ * Thes 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)
+ *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;
+}
+
+void e2fsck_use_inode_shortcuts(e2fsck_t ctx, int bool)
+{
+ ext2_filsys fs = ctx->fs;
+
+ if (bool) {
+ 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;
+ }
+}