mirror of
https://git.kernel.org/pub/scm/fs/ext2/e2fsprogs.git
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6fdc7a325c
pass1.c (e2fsck_pass1): If the filesystem does not support imagic inodes, if an inode has the imagic flag set, offer to clear the imagic flag. If a valid device/fifo/socket has the immutable flag set, call the new helper function check_immutable() to offerto clear the immutable flag. pass2.c (check_filetype): Use the new ext2_file_type() helper function instead of calculating the file_type information manually. pass3.c (e2fsck_reconnect_file): When adding a link to lost+found, calculate the filetype information so that ext2fs_link() can use the information if applicable. (get_lost_and_found): Create the /lost+found directory with the correct filetype information if applicable. util.c (ext2_file_type), e2fsck.h: New function which returns the directory entry file type information given the inode's mode bits. problem.c, problem.h: Added new problem codes PR_1_SET_IMAGIC and PR_1_SET_IMMUTABLE. ChangeLog, mke2fs.8.in: mke2fs.8.in: Update manual page so that the sparse_option filesystem option is properly named.
862 lines
21 KiB
C
862 lines
21 KiB
C
/*
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* pass2.c --- check directory structure
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*
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* Copyright (C) 1993, 1994, 1995, 1996, 1997 Theodore Ts'o
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*
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* %Begin-Header%
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* This file may be redistributed under the terms of the GNU Public
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* License.
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* %End-Header%
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*
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* Pass 2 of e2fsck iterates through all active directory inodes, and
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* applies to following tests to each directory entry in the directory
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* blocks in the inodes:
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*
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* - The length of the directory entry (rec_len) should be at
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* least 8 bytes, and no more than the remaining space
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* left in the directory block.
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* - The length of the name in the directory entry (name_len)
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* should be less than (rec_len - 8).
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* - The inode number in the directory entry should be within
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* legal bounds.
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* - The inode number should refer to a in-use inode.
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* - The first entry should be '.', and its inode should be
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* the inode of the directory.
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* - The second entry should be '..'.
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*
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* To minimize disk seek time, the directory blocks are processed in
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* sorted order of block numbers.
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*
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* Pass 2 also collects the following information:
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* - The inode numbers of the subdirectories for each directory.
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*
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* Pass 2 relies on the following information from previous passes:
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* - The directory information collected in pass 1.
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* - The inode_used_map bitmap
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* - The inode_bad_map bitmap
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* - The inode_dir_map bitmap
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*
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* Pass 2 frees the following data structures
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* - The inode_bad_map bitmap
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* - The inode_reg_map bitmap
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*/
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#include "e2fsck.h"
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#include "problem.h"
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#ifdef NO_INLINE_FUNCS
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#define _INLINE_
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#else
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#define _INLINE_ inline
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#endif
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/*
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* Keeps track of how many times an inode is referenced.
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*/
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static void deallocate_inode(e2fsck_t ctx, ino_t ino,
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char* block_buf);
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static int check_dir_block(ext2_filsys fs,
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struct ext2_db_entry *dir_blocks_info,
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void *priv_data);
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static int allocate_dir_block(e2fsck_t ctx,
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struct ext2_db_entry *dir_blocks_info,
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char *buf, struct problem_context *pctx);
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static int update_dir_block(ext2_filsys fs,
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blk_t *block_nr,
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int blockcnt,
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void *priv_data);
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struct check_dir_struct {
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char *buf;
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struct problem_context pctx;
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int count, max;
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e2fsck_t ctx;
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};
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void e2fsck_pass2(e2fsck_t ctx)
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{
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ext2_filsys fs = ctx->fs;
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char *buf;
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#ifdef RESOURCE_TRACK
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struct resource_track rtrack;
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#endif
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struct dir_info *dir;
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struct check_dir_struct cd;
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#ifdef RESOURCE_TRACK
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init_resource_track(&rtrack);
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#endif
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clear_problem_context(&cd.pctx);
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#ifdef MTRACE
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mtrace_print("Pass 2");
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#endif
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if (!(ctx->options & E2F_OPT_PREEN))
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fix_problem(ctx, PR_2_PASS_HEADER, &cd.pctx);
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cd.pctx.errcode = ext2fs_create_icount2(fs, EXT2_ICOUNT_OPT_INCREMENT,
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0, ctx->inode_link_info,
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&ctx->inode_count);
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if (cd.pctx.errcode) {
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fix_problem(ctx, PR_2_ALLOCATE_ICOUNT, &cd.pctx);
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ctx->flags |= E2F_FLAG_ABORT;
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return;
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}
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buf = (char *) e2fsck_allocate_memory(ctx, fs->blocksize,
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"directory scan buffer");
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/*
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* Set up the parent pointer for the root directory, if
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* present. (If the root directory is not present, we will
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* create it in pass 3.)
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*/
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dir = e2fsck_get_dir_info(ctx, EXT2_ROOT_INO);
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if (dir)
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dir->parent = EXT2_ROOT_INO;
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cd.buf = buf;
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cd.ctx = ctx;
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cd.count = 1;
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cd.max = ext2fs_dblist_count(fs->dblist);
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if (ctx->progress)
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(void) (ctx->progress)(ctx, 2, 0, cd.max);
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cd.pctx.errcode = ext2fs_dblist_iterate(fs->dblist, check_dir_block,
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&cd);
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if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
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return;
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if (cd.pctx.errcode) {
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fix_problem(ctx, PR_2_DBLIST_ITERATE, &cd.pctx);
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ctx->flags |= E2F_FLAG_ABORT;
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return;
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}
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ext2fs_free_mem((void **) &buf);
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ext2fs_free_dblist(fs->dblist);
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if (ctx->inode_bad_map) {
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ext2fs_free_inode_bitmap(ctx->inode_bad_map);
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ctx->inode_bad_map = 0;
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}
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if (ctx->inode_reg_map) {
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ext2fs_free_inode_bitmap(ctx->inode_reg_map);
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ctx->inode_reg_map = 0;
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}
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#ifdef RESOURCE_TRACK
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if (ctx->options & E2F_OPT_TIME2) {
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e2fsck_clear_progbar(ctx);
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print_resource_track("Pass 2", &rtrack);
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}
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#endif
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}
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/*
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* Make sure the first entry in the directory is '.', and that the
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* directory entry is sane.
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*/
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static int check_dot(e2fsck_t ctx,
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struct ext2_dir_entry *dirent,
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ino_t ino, struct problem_context *pctx)
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{
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struct ext2_dir_entry *nextdir;
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int status = 0;
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int created = 0;
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int new_len;
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int problem = 0;
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if (!dirent->inode)
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problem = PR_2_MISSING_DOT;
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else if (((dirent->name_len & 0xFF) != 1) ||
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(dirent->name[0] != '.'))
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problem = PR_2_1ST_NOT_DOT;
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else if (dirent->name[1] != '\0')
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problem = PR_2_DOT_NULL_TERM;
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if (problem) {
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if (fix_problem(ctx, problem, pctx)) {
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if (dirent->rec_len < 12)
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dirent->rec_len = 12;
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dirent->inode = ino;
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dirent->name_len = 1;
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dirent->name[0] = '.';
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dirent->name[1] = '\0';
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status = 1;
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created = 1;
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}
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}
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if (dirent->inode != ino) {
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if (fix_problem(ctx, PR_2_BAD_INODE_DOT, pctx)) {
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dirent->inode = ino;
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status = 1;
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}
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}
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if (dirent->rec_len > 12) {
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new_len = dirent->rec_len - 12;
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if (new_len > 12) {
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if (created ||
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fix_problem(ctx, PR_2_SPLIT_DOT, pctx)) {
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nextdir = (struct ext2_dir_entry *)
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((char *) dirent + 12);
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dirent->rec_len = 12;
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nextdir->rec_len = new_len;
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nextdir->inode = 0;
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nextdir->name_len = 0;
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status = 1;
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}
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}
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}
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return status;
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}
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/*
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* Make sure the second entry in the directory is '..', and that the
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* directory entry is sane. We do not check the inode number of '..'
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* here; this gets done in pass 3.
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*/
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static int check_dotdot(e2fsck_t ctx,
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struct ext2_dir_entry *dirent,
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struct dir_info *dir, struct problem_context *pctx)
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{
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int problem = 0;
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if (!dirent->inode)
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problem = PR_2_MISSING_DOT_DOT;
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else if (((dirent->name_len & 0xFF) != 2) ||
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(dirent->name[0] != '.') ||
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(dirent->name[1] != '.'))
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problem = PR_2_2ND_NOT_DOT_DOT;
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else if (dirent->name[2] != '\0')
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problem = PR_2_DOT_DOT_NULL_TERM;
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if (problem) {
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if (fix_problem(ctx, problem, pctx)) {
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if (dirent->rec_len < 12)
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dirent->rec_len = 12;
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/*
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* Note: we don't have the parent inode just
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* yet, so we will fill it in with the root
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* inode. This will get fixed in pass 3.
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*/
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dirent->inode = EXT2_ROOT_INO;
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dirent->name_len = 2;
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dirent->name[0] = '.';
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dirent->name[1] = '.';
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dirent->name[2] = '\0';
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return 1;
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}
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return 0;
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}
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dir->dotdot = dirent->inode;
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return 0;
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}
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/*
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* Check to make sure a directory entry doesn't contain any illegal
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* characters.
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*/
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static int check_name(e2fsck_t ctx,
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struct ext2_dir_entry *dirent,
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ino_t dir_ino, struct problem_context *pctx)
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{
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int i;
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int fixup = -1;
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int ret = 0;
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for ( i = 0; i < (dirent->name_len & 0xFF); i++) {
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if (dirent->name[i] == '/' || dirent->name[i] == '\0') {
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if (fixup < 0) {
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fixup = fix_problem(ctx, PR_2_BAD_NAME, pctx);
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}
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if (fixup) {
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dirent->name[i] = '.';
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ret = 1;
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}
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}
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}
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return ret;
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}
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/*
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* Check the directory filetype (if present)
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*/
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static _INLINE_ int check_filetype(e2fsck_t ctx,
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struct ext2_dir_entry *dirent,
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ino_t dir_ino, struct problem_context *pctx)
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{
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int filetype = dirent->name_len >> 8;
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int should_be = EXT2_FT_UNKNOWN;
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struct ext2_inode inode;
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if (!(ctx->fs->super->s_feature_incompat &
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EXT2_FEATURE_INCOMPAT_FILETYPE)) {
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if (filetype == 0 ||
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!fix_problem(ctx, PR_2_CLEAR_FILETYPE, pctx))
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return 0;
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dirent->name_len = dirent->name_len & 0xFF;
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return 1;
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}
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if (ext2fs_test_inode_bitmap(ctx->inode_dir_map, dirent->inode)) {
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should_be = EXT2_FT_DIR;
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} else if (ext2fs_test_inode_bitmap(ctx->inode_reg_map,
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dirent->inode)) {
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should_be = EXT2_FT_REG_FILE;
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} else if (ctx->inode_bad_map &&
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ext2fs_test_inode_bitmap(ctx->inode_bad_map,
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dirent->inode))
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should_be = 0;
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else {
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e2fsck_read_inode(ctx, dirent->inode, &inode,
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"check_filetype");
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should_be = ext2_file_type(inode.i_mode);
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}
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if (filetype == should_be)
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return 0;
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pctx->num = should_be;
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if (fix_problem(ctx, filetype ? PR_2_BAD_FILETYPE : PR_2_SET_FILETYPE,
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pctx) == 0)
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return 0;
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dirent->name_len = (dirent->name_len & 0xFF) | should_be << 8;
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return 1;
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}
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static int check_dir_block(ext2_filsys fs,
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struct ext2_db_entry *db,
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void *priv_data)
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{
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struct dir_info *subdir, *dir;
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struct ext2_dir_entry *dirent;
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int offset = 0;
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int dir_modified = 0;
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int dot_state;
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blk_t block_nr = db->blk;
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ino_t ino = db->ino;
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__u16 links;
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struct check_dir_struct *cd;
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char *buf;
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e2fsck_t ctx;
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int problem;
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cd = (struct check_dir_struct *) priv_data;
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buf = cd->buf;
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ctx = cd->ctx;
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if (ctx->progress)
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if ((ctx->progress)(ctx, 2, cd->count++, cd->max))
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return DIRENT_ABORT;
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/*
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* Make sure the inode is still in use (could have been
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* deleted in the duplicate/bad blocks pass.
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*/
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if (!(ext2fs_test_inode_bitmap(ctx->inode_used_map, ino)))
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return 0;
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cd->pctx.ino = ino;
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cd->pctx.blk = block_nr;
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cd->pctx.blkcount = db->blockcnt;
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cd->pctx.ino2 = 0;
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cd->pctx.dirent = 0;
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cd->pctx.num = 0;
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if (db->blk == 0) {
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if (allocate_dir_block(ctx, db, buf, &cd->pctx))
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return 0;
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block_nr = db->blk;
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}
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if (db->blockcnt)
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dot_state = 2;
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else
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dot_state = 0;
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#if 0
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printf("In process_dir_block block %lu, #%d, inode %lu\n", block_nr,
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db->blockcnt, ino);
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#endif
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cd->pctx.errcode = ext2fs_read_dir_block(fs, block_nr, buf);
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if (cd->pctx.errcode) {
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if (!fix_problem(ctx, PR_2_READ_DIRBLOCK, &cd->pctx)) {
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ctx->flags |= E2F_FLAG_ABORT;
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return DIRENT_ABORT;
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}
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memset(buf, 0, fs->blocksize);
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}
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do {
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dot_state++;
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problem = 0;
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dirent = (struct ext2_dir_entry *) (buf + offset);
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cd->pctx.dirent = dirent;
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cd->pctx.num = offset;
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if (((offset + dirent->rec_len) > fs->blocksize) ||
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(dirent->rec_len < 12) ||
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((dirent->rec_len % 4) != 0) ||
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(((dirent->name_len & 0xFF)+8) > dirent->rec_len)) {
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if (fix_problem(ctx, PR_2_DIR_CORRUPTED, &cd->pctx)) {
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dirent->rec_len = fs->blocksize - offset;
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dirent->name_len = 0;
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dirent->inode = 0;
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dir_modified++;
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} else
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return DIRENT_ABORT;
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}
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if ((dirent->name_len & 0xFF) > EXT2_NAME_LEN) {
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if (fix_problem(ctx, PR_2_FILENAME_LONG, &cd->pctx)) {
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dirent->name_len = EXT2_NAME_LEN;
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dir_modified++;
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}
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}
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if (dot_state == 1) {
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if (check_dot(ctx, dirent, ino, &cd->pctx))
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dir_modified++;
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} else if (dot_state == 2) {
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dir = e2fsck_get_dir_info(ctx, ino);
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if (!dir) {
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fix_problem(ctx, PR_2_NO_DIRINFO, &cd->pctx);
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ctx->flags |= E2F_FLAG_ABORT;
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return DIRENT_ABORT;
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}
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if (check_dotdot(ctx, dirent, dir, &cd->pctx))
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dir_modified++;
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} else if (dirent->inode == ino) {
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problem = PR_2_LINK_DOT;
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if (fix_problem(ctx, PR_2_LINK_DOT, &cd->pctx)) {
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dirent->inode = 0;
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dir_modified++;
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goto next;
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}
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}
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if (!dirent->inode)
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goto next;
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/*
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* Make sure the inode listed is a legal one.
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*/
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if (((dirent->inode != EXT2_ROOT_INO) &&
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(dirent->inode < EXT2_FIRST_INODE(fs->super))) ||
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(dirent->inode > fs->super->s_inodes_count)) {
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problem = PR_2_BAD_INO;
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} else if (!(ext2fs_test_inode_bitmap(ctx->inode_used_map,
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dirent->inode))) {
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/*
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* If the inode is unused, offer to clear it.
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*/
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problem = PR_2_UNUSED_INODE;
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} else if (ctx->inode_bb_map &&
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(ext2fs_test_inode_bitmap(ctx->inode_bb_map,
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dirent->inode))) {
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/*
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* If the inode is in a bad block, offer to
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* clear it.
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*/
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problem = PR_2_BB_INODE;
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} else if ((dot_state > 2) &&
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((dirent->name_len & 0xFF) == 1) &&
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(dirent->name[0] == '.')) {
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/*
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* If there's a '.' entry in anything other
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* than the first directory entry, it's a
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* duplicate entry that should be removed.
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*/
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problem = PR_2_DUP_DOT;
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} else if ((dot_state > 2) &&
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((dirent->name_len & 0xFF) == 2) &&
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(dirent->name[0] == '.') &&
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(dirent->name[1] == '.')) {
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/*
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* If there's a '..' entry in anything other
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* than the second directory entry, it's a
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* duplicate entry that should be removed.
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*/
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problem = PR_2_DUP_DOT_DOT;
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} else if ((dot_state > 2) &&
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(dirent->inode == EXT2_ROOT_INO)) {
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/*
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* Don't allow links to the root directory.
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* We check this specially to make sure we
|
|
* catch this error case even if the root
|
|
* directory hasn't been created yet.
|
|
*/
|
|
problem = PR_2_LINK_ROOT;
|
|
} else if ((dot_state > 2) &&
|
|
(dirent->name_len & 0xFF) == 0) {
|
|
/*
|
|
* Don't allow zero-length directory names.
|
|
*/
|
|
problem = PR_2_NULL_NAME;
|
|
}
|
|
|
|
if (problem) {
|
|
if (fix_problem(ctx, problem, &cd->pctx)) {
|
|
dirent->inode = 0;
|
|
dir_modified++;
|
|
goto next;
|
|
} else {
|
|
ext2fs_unmark_valid(fs);
|
|
if (problem == PR_2_BAD_INO)
|
|
goto next;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If the inode was marked as having bad fields in
|
|
* pass1, process it and offer to fix/clear it.
|
|
* (We wait until now so that we can display the
|
|
* pathname to the user.)
|
|
*/
|
|
if (ctx->inode_bad_map &&
|
|
ext2fs_test_inode_bitmap(ctx->inode_bad_map,
|
|
dirent->inode)) {
|
|
if (e2fsck_process_bad_inode(ctx, ino,
|
|
dirent->inode)) {
|
|
dirent->inode = 0;
|
|
dir_modified++;
|
|
goto next;
|
|
}
|
|
if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
|
|
return DIRENT_ABORT;
|
|
}
|
|
|
|
if (check_name(ctx, dirent, ino, &cd->pctx))
|
|
dir_modified++;
|
|
|
|
if (check_filetype(ctx, dirent, ino, &cd->pctx))
|
|
dir_modified++;
|
|
|
|
/*
|
|
* If this is a directory, then mark its parent in its
|
|
* dir_info structure. If the parent field is already
|
|
* filled in, then this directory has more than one
|
|
* hard link. We assume the first link is correct,
|
|
* and ask the user if he/she wants to clear this one.
|
|
*/
|
|
if ((dot_state > 2) &&
|
|
(ext2fs_test_inode_bitmap(ctx->inode_dir_map,
|
|
dirent->inode))) {
|
|
subdir = e2fsck_get_dir_info(ctx, dirent->inode);
|
|
if (!subdir) {
|
|
cd->pctx.ino = dirent->inode;
|
|
fix_problem(ctx, PR_2_NO_DIRINFO, &cd->pctx);
|
|
ctx->flags |= E2F_FLAG_ABORT;
|
|
return DIRENT_ABORT;
|
|
}
|
|
if (subdir->parent) {
|
|
cd->pctx.ino2 = subdir->parent;
|
|
if (fix_problem(ctx, PR_2_LINK_DIR,
|
|
&cd->pctx)) {
|
|
dirent->inode = 0;
|
|
dir_modified++;
|
|
goto next;
|
|
}
|
|
cd->pctx.ino2 = 0;
|
|
} else
|
|
subdir->parent = ino;
|
|
}
|
|
|
|
ext2fs_icount_increment(ctx->inode_count, dirent->inode,
|
|
&links);
|
|
if (links > 1)
|
|
ctx->fs_links_count++;
|
|
ctx->fs_total_count++;
|
|
next:
|
|
offset += dirent->rec_len;
|
|
} while (offset < fs->blocksize);
|
|
#if 0
|
|
printf("\n");
|
|
#endif
|
|
if (offset != fs->blocksize) {
|
|
cd->pctx.num = dirent->rec_len - fs->blocksize + offset;
|
|
if (fix_problem(ctx, PR_2_FINAL_RECLEN, &cd->pctx)) {
|
|
dirent->rec_len = cd->pctx.num;
|
|
dir_modified++;
|
|
}
|
|
}
|
|
if (dir_modified) {
|
|
cd->pctx.errcode = ext2fs_write_dir_block(fs, block_nr, buf);
|
|
if (cd->pctx.errcode) {
|
|
if (!fix_problem(ctx, PR_2_WRITE_DIRBLOCK,
|
|
&cd->pctx)) {
|
|
ctx->flags |= E2F_FLAG_ABORT;
|
|
return DIRENT_ABORT;
|
|
}
|
|
}
|
|
ext2fs_mark_changed(fs);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* This function is called to deallocate a block, and is an interator
|
|
* functioned called by deallocate inode via ext2fs_iterate_block().
|
|
*/
|
|
static int deallocate_inode_block(ext2_filsys fs,
|
|
blk_t *block_nr,
|
|
int blockcnt,
|
|
void *priv_data)
|
|
{
|
|
e2fsck_t ctx = (e2fsck_t) priv_data;
|
|
|
|
if (!*block_nr)
|
|
return 0;
|
|
ext2fs_unmark_block_bitmap(ctx->block_found_map, *block_nr);
|
|
ext2fs_unmark_block_bitmap(fs->block_map, *block_nr);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* This fuction deallocates an inode
|
|
*/
|
|
static void deallocate_inode(e2fsck_t ctx, ino_t ino,
|
|
char* block_buf)
|
|
{
|
|
ext2_filsys fs = ctx->fs;
|
|
struct ext2_inode inode;
|
|
struct problem_context pctx;
|
|
|
|
ext2fs_icount_store(ctx->inode_link_info, ino, 0);
|
|
e2fsck_read_inode(ctx, ino, &inode, "deallocate_inode");
|
|
inode.i_links_count = 0;
|
|
inode.i_dtime = time(0);
|
|
e2fsck_write_inode(ctx, ino, &inode, "deallocate_inode");
|
|
clear_problem_context(&pctx);
|
|
pctx.ino = ino;
|
|
|
|
/*
|
|
* Fix up the bitmaps...
|
|
*/
|
|
e2fsck_read_bitmaps(ctx);
|
|
ext2fs_unmark_inode_bitmap(ctx->inode_used_map, ino);
|
|
ext2fs_unmark_inode_bitmap(ctx->inode_dir_map, ino);
|
|
if (ctx->inode_bad_map)
|
|
ext2fs_unmark_inode_bitmap(ctx->inode_bad_map, ino);
|
|
ext2fs_unmark_inode_bitmap(fs->inode_map, ino);
|
|
ext2fs_mark_ib_dirty(fs);
|
|
|
|
if (!ext2fs_inode_has_valid_blocks(&inode))
|
|
return;
|
|
|
|
ext2fs_mark_bb_dirty(fs);
|
|
pctx.errcode = ext2fs_block_iterate(fs, ino, 0, block_buf,
|
|
deallocate_inode_block, ctx);
|
|
if (pctx.errcode) {
|
|
fix_problem(ctx, PR_2_DEALLOC_INODE, &pctx);
|
|
ctx->flags |= E2F_FLAG_ABORT;
|
|
return;
|
|
}
|
|
}
|
|
|
|
extern int e2fsck_process_bad_inode(e2fsck_t ctx, ino_t dir, ino_t ino)
|
|
{
|
|
ext2_filsys fs = ctx->fs;
|
|
struct ext2_inode inode;
|
|
int inode_modified = 0;
|
|
unsigned char *frag, *fsize;
|
|
struct problem_context pctx;
|
|
int problem = 0;
|
|
|
|
e2fsck_read_inode(ctx, ino, &inode, "process_bad_inode");
|
|
|
|
clear_problem_context(&pctx);
|
|
pctx.ino = ino;
|
|
pctx.dir = dir;
|
|
pctx.inode = &inode;
|
|
|
|
if (!LINUX_S_ISDIR(inode.i_mode) && !LINUX_S_ISREG(inode.i_mode) &&
|
|
!LINUX_S_ISCHR(inode.i_mode) && !LINUX_S_ISBLK(inode.i_mode) &&
|
|
!LINUX_S_ISLNK(inode.i_mode) && !LINUX_S_ISFIFO(inode.i_mode) &&
|
|
!(LINUX_S_ISSOCK(inode.i_mode)))
|
|
problem = PR_2_BAD_MODE;
|
|
|
|
if (LINUX_S_ISCHR(inode.i_mode)
|
|
&& !e2fsck_pass1_check_device_inode(&inode))
|
|
problem = PR_2_BAD_CHAR_DEV;
|
|
|
|
if (LINUX_S_ISBLK(inode.i_mode)
|
|
&& !e2fsck_pass1_check_device_inode(&inode))
|
|
problem = PR_2_BAD_BLOCK_DEV;
|
|
|
|
if (LINUX_S_ISFIFO(inode.i_mode)
|
|
&& !e2fsck_pass1_check_device_inode(&inode))
|
|
problem = PR_2_BAD_FIFO;
|
|
|
|
if (LINUX_S_ISSOCK(inode.i_mode)
|
|
&& !e2fsck_pass1_check_device_inode(&inode))
|
|
problem = PR_2_BAD_SOCKET;
|
|
|
|
if (problem) {
|
|
if (fix_problem(ctx, problem, &pctx)) {
|
|
deallocate_inode(ctx, ino, 0);
|
|
if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
|
|
return 0;
|
|
return 1;
|
|
}
|
|
problem = 0;
|
|
}
|
|
|
|
if (inode.i_faddr &&
|
|
fix_problem(ctx, PR_2_FADDR_ZERO, &pctx)) {
|
|
inode.i_faddr = 0;
|
|
inode_modified++;
|
|
}
|
|
|
|
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 (frag && *frag) {
|
|
pctx.num = *frag;
|
|
if (fix_problem(ctx, PR_2_FRAG_ZERO, &pctx)) {
|
|
*frag = 0;
|
|
inode_modified++;
|
|
}
|
|
pctx.num = 0;
|
|
}
|
|
if (fsize && *fsize) {
|
|
pctx.num = *fsize;
|
|
if (fix_problem(ctx, PR_2_FSIZE_ZERO, &pctx)) {
|
|
*fsize = 0;
|
|
inode_modified++;
|
|
}
|
|
pctx.num = 0;
|
|
}
|
|
|
|
if (inode.i_file_acl &&
|
|
fix_problem(ctx, PR_2_FILE_ACL_ZERO, &pctx)) {
|
|
inode.i_file_acl = 0;
|
|
inode_modified++;
|
|
}
|
|
if (inode.i_dir_acl &&
|
|
LINUX_S_ISDIR(inode.i_mode) &&
|
|
fix_problem(ctx, PR_2_DIR_ACL_ZERO, &pctx)) {
|
|
inode.i_dir_acl = 0;
|
|
inode_modified++;
|
|
}
|
|
if (inode_modified)
|
|
e2fsck_write_inode(ctx, ino, &inode, "process_bad_inode");
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* allocate_dir_block --- this function allocates a new directory
|
|
* block for a particular inode; this is done if a directory has
|
|
* a "hole" in it, or if a directory has a illegal block number
|
|
* that was zeroed out and now needs to be replaced.
|
|
*/
|
|
static int allocate_dir_block(e2fsck_t ctx,
|
|
struct ext2_db_entry *db,
|
|
char *buf, struct problem_context *pctx)
|
|
{
|
|
ext2_filsys fs = ctx->fs;
|
|
blk_t blk;
|
|
char *block;
|
|
struct ext2_inode inode;
|
|
|
|
if (fix_problem(ctx, PR_2_DIRECTORY_HOLE, pctx) == 0)
|
|
return 1;
|
|
|
|
/*
|
|
* Read the inode and block bitmaps in; we'll be messing with
|
|
* them.
|
|
*/
|
|
e2fsck_read_bitmaps(ctx);
|
|
|
|
/*
|
|
* First, find a free block
|
|
*/
|
|
pctx->errcode = ext2fs_new_block(fs, 0, ctx->block_found_map, &blk);
|
|
if (pctx->errcode) {
|
|
pctx->str = "ext2fs_new_block";
|
|
fix_problem(ctx, PR_2_ALLOC_DIRBOCK, pctx);
|
|
return 1;
|
|
}
|
|
ext2fs_mark_block_bitmap(ctx->block_found_map, blk);
|
|
ext2fs_mark_block_bitmap(fs->block_map, blk);
|
|
ext2fs_mark_bb_dirty(fs);
|
|
|
|
/*
|
|
* Now let's create the actual data block for the inode
|
|
*/
|
|
if (db->blockcnt)
|
|
pctx->errcode = ext2fs_new_dir_block(fs, 0, 0, &block);
|
|
else
|
|
pctx->errcode = ext2fs_new_dir_block(fs, db->ino,
|
|
EXT2_ROOT_INO, &block);
|
|
|
|
if (pctx->errcode) {
|
|
pctx->str = "ext2fs_new_dir_block";
|
|
fix_problem(ctx, PR_2_ALLOC_DIRBOCK, pctx);
|
|
return 1;
|
|
}
|
|
|
|
pctx->errcode = ext2fs_write_dir_block(fs, blk, block);
|
|
ext2fs_free_mem((void **) &block);
|
|
if (pctx->errcode) {
|
|
pctx->str = "ext2fs_write_dir_block";
|
|
fix_problem(ctx, PR_2_ALLOC_DIRBOCK, pctx);
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Update the inode block count
|
|
*/
|
|
e2fsck_read_inode(ctx, db->ino, &inode, "allocate_dir_block");
|
|
inode.i_blocks += fs->blocksize / 512;
|
|
if (inode.i_size < (db->blockcnt+1) * fs->blocksize)
|
|
inode.i_size = (db->blockcnt+1) * fs->blocksize;
|
|
e2fsck_write_inode(ctx, db->ino, &inode, "allocate_dir_block");
|
|
|
|
/*
|
|
* Finally, update the block pointers for the inode
|
|
*/
|
|
db->blk = blk;
|
|
pctx->errcode = ext2fs_block_iterate(fs, db->ino, BLOCK_FLAG_HOLE,
|
|
0, update_dir_block, db);
|
|
if (pctx->errcode) {
|
|
pctx->str = "ext2fs_block_iterate";
|
|
fix_problem(ctx, PR_2_ALLOC_DIRBOCK, pctx);
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* This is a helper function for allocate_dir_block().
|
|
*/
|
|
static int update_dir_block(ext2_filsys fs,
|
|
blk_t *block_nr,
|
|
int blockcnt,
|
|
void *priv_data)
|
|
{
|
|
struct ext2_db_entry *db;
|
|
|
|
db = (struct ext2_db_entry *) priv_data;
|
|
if (db->blockcnt == blockcnt) {
|
|
*block_nr = db->blk;
|
|
return BLOCK_CHANGED;
|
|
}
|
|
return 0;
|
|
}
|