mirror of https://github.com/vitalif/e2fsprogs
282 lines
7.3 KiB
C
282 lines
7.3 KiB
C
/*
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* e2fsck.h
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*
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* Copyright (C) 1993, 1994 Theodore Ts'o. This file may be
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* redistributed under the terms of the GNU Public License.
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*
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*/
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <stdlib.h>
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#ifdef HAVE_SYS_TIME_H
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#include <sys/time.h>
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#endif
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#ifdef HAVE_SETJMP_H
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#include <setjmp.h>
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#endif
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#ifdef HAVE_LINUX_FS_H
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#include <linux/fs.h>
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#endif
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#include <linux/ext2_fs.h>
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#include "ext2fs/ext2fs.h"
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/* Everything is STDC, these days */
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#define NOARGS void
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/*
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* Exit codes used by fsck-type programs
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*/
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#define FSCK_OK 0 /* No errors */
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#define FSCK_NONDESTRUCT 1 /* File system errors corrected */
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#define FSCK_REBOOT 2 /* System should be rebooted */
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#define FSCK_UNCORRECTED 4 /* File system errors left uncorrected */
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#define FSCK_ERROR 8 /* Operational error */
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#define FSCK_USAGE 16 /* Usage or syntax error */
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#define FSCK_LIBRARY 128 /* Shared library error */
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/*
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* The last ext2fs revision level that this version of e2fsck is able to
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* support
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*/
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#define E2FSCK_CURRENT_REV 1
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/*
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* The directory information structure; stores directory information
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* collected in earlier passes, to avoid disk i/o in fetching the
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* directory information.
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*/
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struct dir_info {
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ino_t ino; /* Inode number */
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ino_t dotdot; /* Parent according to '..' */
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ino_t parent; /* Parent according to treewalk */
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};
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#ifdef RESOURCE_TRACK
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/*
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* This structure is used for keeping track of how much resources have
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* been used for a particular pass of e2fsck.
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*/
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struct resource_track {
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struct timeval time_start;
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struct timeval user_start;
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struct timeval system_start;
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void *brk_start;
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};
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#endif
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/*
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* E2fsck options
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*/
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#define E2F_OPT_READONLY 0x0001
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#define E2F_OPT_PREEN 0x0002
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#define E2F_OPT_YES 0x0004
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#define E2F_OPT_NO 0x0008
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#define E2F_OPT_TIME 0x0010
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#define E2F_OPT_TIME2 0x0020
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#define E2F_OPT_CHECKBLOCKS 0x0040
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#define E2F_OPT_DEBUG 0x0080
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/*
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* E2fsck flags
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*/
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#define E2F_FLAG_ABORT 0x0001 /* Abort signaled */
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#define E2F_FLAG_CANCEL 0x0002 /* Cancel signaled */
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#define E2F_FLAG_RESTART 0x0004 /* Restart signaled */
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#define E2F_FLAG_SIGNAL_MASK 0x000F
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#define E2F_FLAG_SETJMP_OK 0x0010 /* Setjmp valid for abort */
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/*
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* Defines for indicating the e2fsck pass number
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*/
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#define E2F_PASS_1 1
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#define E2F_PASS_2 2
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#define E2F_PASS_3 3
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#define E2F_PASS_4 4
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#define E2F_PASS_5 5
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#define E2F_PASS_1B 6
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/*
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* This is the global e2fsck structure.
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*/
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typedef struct e2fsck_struct *e2fsck_t;
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struct e2fsck_struct {
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ext2_filsys fs;
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const char *program_name;
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const char *filesystem_name;
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const char *device_name;
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int flags; /* E2fsck internal flags */
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int options;
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blk_t use_superblock; /* sb requested by user */
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blk_t superblock; /* sb used to open fs */
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blk_t num_blocks; /* Total number of blocks */
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#ifdef HAVE_SETJMP_H
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jmp_buf abort_loc;
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#endif
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unsigned long abort_code;
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void (*progress)(e2fsck_t ctx, int pass, unsigned long cur,
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unsigned long max);
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ext2fs_inode_bitmap inode_used_map; /* Inodes which are in use */
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ext2fs_inode_bitmap inode_bad_map; /* Inodes which are bad somehow */
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ext2fs_inode_bitmap inode_dir_map; /* Inodes which are directories */
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ext2fs_inode_bitmap inode_bb_map; /* Inodes which are in bad blocks */
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ext2fs_block_bitmap block_found_map; /* Blocks which are in use */
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ext2fs_block_bitmap block_dup_map; /* Blks referenced more than once */
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ext2fs_block_bitmap block_illegal_map; /* Meta-data blocks */
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/*
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* Inode count arrays
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*/
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ext2_icount_t inode_count;
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ext2_icount_t inode_link_info;
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/*
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* Array of flags indicating whether an inode bitmap, block
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* bitmap, or inode table is invalid
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*/
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int *invalid_inode_bitmap_flag;
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int *invalid_block_bitmap_flag;
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int *invalid_inode_table_flag;
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int invalid_bitmaps; /* There are invalid bitmaps/itable */
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/*
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* Block buffer
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*/
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char *block_buf;
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/*
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* For pass1_check_directory and pass1_get_blocks
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*/
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ino_t stashed_ino;
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struct ext2_inode *stashed_inode;
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/*
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* Directory information
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*/
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int dir_info_count;
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int dir_info_size;
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struct dir_info *dir_info;
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/*
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* Tuning parameters
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*/
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int process_inode_size;
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int inode_buffer_blocks;
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#ifdef RESOURCE_TRACK
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/*
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* For timing purposes
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*/
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struct resource_track global_rtrack;
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#endif
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/* File counts */
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int fs_directory_count;
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int fs_regular_count;
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int fs_blockdev_count;
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int fs_chardev_count;
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int fs_links_count;
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int fs_symlinks_count;
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int fs_fast_symlinks_count;
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int fs_fifo_count;
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int fs_total_count;
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int fs_badblocks_count;
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int fs_sockets_count;
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int fs_ind_count;
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int fs_dind_count;
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int fs_tind_count;
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int fs_fragmented;
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};
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/*
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* Procedure declarations
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*/
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extern void e2fsck_pass1(e2fsck_t ctx);
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extern void e2fsck_pass1_dupblocks(e2fsck_t ctx, char *block_buf);
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extern void e2fsck_pass2(e2fsck_t ctx);
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extern void e2fsck_pass3(e2fsck_t ctx);
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extern void e2fsck_pass4(e2fsck_t ctx);
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extern void e2fsck_pass5(e2fsck_t ctx);
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/* e2fsck.c */
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extern errcode_t e2fsck_allocate_context(e2fsck_t *ret);
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extern errcode_t e2fsck_reset_context(e2fsck_t ctx);
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extern void e2fsck_free_context(e2fsck_t ctx);
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extern int e2fsck_run(e2fsck_t ctx);
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/* pass1.c */
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extern errcode_t pass1_check_directory(ext2_filsys fs, ino_t ino);
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extern errcode_t pass1_get_blocks(ext2_filsys fs, ino_t ino, blk_t *blocks);
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extern errcode_t pass1_read_inode(ext2_filsys fs, ino_t ino,
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struct ext2_inode *inode);
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extern errcode_t pass1_write_inode(ext2_filsys fs, ino_t ino,
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struct ext2_inode *inode);
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extern int e2fsck_pass1_check_device_inode(struct ext2_inode *inode);
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/* badblock.c */
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extern void read_bad_blocks_file(e2fsck_t ctx, const char *bad_blocks_file,
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int replace_bad_blocks);
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extern void test_disk(e2fsck_t ctx);
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/* dirinfo.c */
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extern void e2fsck_add_dir_info(e2fsck_t ctx, ino_t ino, ino_t parent);
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extern struct dir_info *e2fsck_get_dir_info(e2fsck_t ctx, ino_t ino);
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extern void e2fsck_free_dir_info(e2fsck_t ctx);
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extern int e2fsck_get_num_dirs(e2fsck_t ctx);
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extern int e2fsck_get_num_dirinfo(e2fsck_t ctx);
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extern struct dir_info *e2fsck_dir_info_iter(e2fsck_t ctx, int *control);
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/* ehandler.c */
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extern const char *ehandler_operation(const char *op);
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extern void ehandler_init(io_channel channel);
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/* super.c */
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void check_super_block(e2fsck_t ctx);
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/* swapfs.c */
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void swap_filesys(e2fsck_t ctx);
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/* util.c */
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extern void *e2fsck_allocate_memory(e2fsck_t ctx, unsigned int size,
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const char *description);
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extern int ask(e2fsck_t ctx, const char * string, int def);
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extern int ask_yn(const char * string, int def);
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extern void fatal_error(e2fsck_t ctx, const char * fmt_string);
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extern void e2fsck_read_bitmaps(e2fsck_t ctx);
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extern void e2fsck_write_bitmaps(e2fsck_t ctx);
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extern void preenhalt(e2fsck_t ctx);
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#ifdef RESOURCE_TRACK
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extern void print_resource_track(const char *desc,
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struct resource_track *track);
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extern void init_resource_track(struct resource_track *track);
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#endif
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extern int inode_has_valid_blocks(struct ext2_inode *inode);
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extern void e2fsck_read_inode(e2fsck_t ctx, unsigned long ino,
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struct ext2_inode * inode, const char * proc);
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extern void e2fsck_write_inode(e2fsck_t ctx, unsigned long ino,
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struct ext2_inode * inode, const char * proc);
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#ifdef MTRACE
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extern void mtrace_print(char *mesg);
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#endif
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extern blk_t get_backup_sb(ext2_filsys fs);
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/*
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* pass3.c
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*/
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extern int e2fsck_reconnect_file(e2fsck_t ctx, ino_t inode);
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