1507 lines
36 KiB
C
1507 lines
36 KiB
C
/* vi: set sw=4 ts=4: */
|
||
/*
|
||
* fsck.c - a file system consistency checker for Linux.
|
||
*
|
||
* (C) 1991, 1992 Linus Torvalds. This file may be redistributed
|
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* as per the GNU copyleft.
|
||
*/
|
||
|
||
/*
|
||
* 09.11.91 - made the first rudimetary functions
|
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*
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* 10.11.91 - updated, does checking, no repairs yet.
|
||
* Sent out to the mailing-list for testing.
|
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*
|
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* 14.11.91 - Testing seems to have gone well. Added some
|
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* correction-code, and changed some functions.
|
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*
|
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* 15.11.91 - More correction code. Hopefully it notices most
|
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* cases now, and tries to do something about them.
|
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*
|
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* 16.11.91 - More corrections (thanks to Mika Jalava). Most
|
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* things seem to work now. Yeah, sure.
|
||
*
|
||
*
|
||
* 19.04.92 - Had to start over again from this old version, as a
|
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* kernel bug ate my enhanced fsck in february.
|
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*
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* 28.02.93 - added support for different directory entry sizes..
|
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*
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||
* Sat Mar 6 18:59:42 1993, faith@cs.unc.edu: Output namelen with
|
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* super-block information
|
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*
|
||
* Sat Oct 9 11:17:11 1993, faith@cs.unc.edu: make exit status conform
|
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* to that required by fsutil
|
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*
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* Mon Jan 3 11:06:52 1994 - Dr. Wettstein (greg%wind.uucp@plains.nodak.edu)
|
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* Added support for file system valid flag. Also
|
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* added program_version variable and output of
|
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* program name and version number when program
|
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* is executed.
|
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*
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* 30.10.94 - added support for v2 filesystem
|
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* (Andreas Schwab, schwab@issan.informatik.uni-dortmund.de)
|
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*
|
||
* 10.12.94 - added test to prevent checking of mounted fs adapted
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* from Theodore Ts'o's (tytso@athena.mit.edu) e2fsck
|
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* program. (Daniel Quinlan, quinlan@yggdrasil.com)
|
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*
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* 01.07.96 - Fixed the v2 fs stuff to use the right #defines and such
|
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* for modern libcs (janl@math.uio.no, Nicolai Langfeldt)
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*
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* 02.07.96 - Added C bit fiddling routines from rmk@ecs.soton.ac.uk
|
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* (Russell King). He made them for ARM. It would seem
|
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* that the ARM is powerful enough to do this in C whereas
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* i386 and m64k must use assembly to get it fast >:-)
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* This should make minix fsck systemindependent.
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* (janl@math.uio.no, Nicolai Langfeldt)
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*
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* 04.11.96 - Added minor fixes from Andreas Schwab to avoid compiler
|
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* warnings. Added mc68k bitops from
|
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* Joerg Dorchain <dorchain@mpi-sb.mpg.de>.
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*
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* 06.11.96 - Added v2 code submitted by Joerg Dorchain, but written by
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* Andreas Schwab.
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*
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* 1999-02-22 Arkadiusz Mi<4D>kiewicz <misiek@misiek.eu.org>
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* - added Native Language Support
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*
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*
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* I've had no time to add comments - hopefully the function names
|
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* are comments enough. As with all file system checkers, this assumes
|
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* the file system is quiescent - don't use it on a mounted device
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* unless you can be sure nobody is writing to it (and remember that the
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* kernel can write to it when it searches for files).
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*
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* Usuage: fsck [-larvsm] device
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* -l for a listing of all the filenames
|
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* -a for automatic repairs (not implemented)
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* -r for repairs (interactive) (not implemented)
|
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* -v for verbose (tells how many files)
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* -s for super-block info
|
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* -m for minix-like "mode not cleared" warnings
|
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* -f force filesystem check even if filesystem marked as valid
|
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*
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* The device may be a block device or a image of one, but this isn't
|
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* enforced (but it's not much fun on a character device :-).
|
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*/
|
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|
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#include "internal.h"
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#include <stdio.h>
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#include <errno.h>
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#include <unistd.h>
|
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#include <string.h>
|
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#include <fcntl.h>
|
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#include <ctype.h>
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#include <stdlib.h>
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#include <termios.h>
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#include <mntent.h>
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#include <sys/stat.h>
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#include <sys/param.h>
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typedef unsigned char u8;
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typedef unsigned short u16;
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typedef unsigned int u32;
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#define MINIX_ROOT_INO 1
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#define MINIX_LINK_MAX 250
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#define MINIX2_LINK_MAX 65530
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#define MINIX_I_MAP_SLOTS 8
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||
#define MINIX_Z_MAP_SLOTS 64
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#define MINIX_SUPER_MAGIC 0x137F /* original minix fs */
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#define MINIX_SUPER_MAGIC2 0x138F /* minix fs, 30 char names */
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#define MINIX2_SUPER_MAGIC 0x2468 /* minix V2 fs */
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#define MINIX2_SUPER_MAGIC2 0x2478 /* minix V2 fs, 30 char names */
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#define MINIX_VALID_FS 0x0001 /* Clean fs. */
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||
#define MINIX_ERROR_FS 0x0002 /* fs has errors. */
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#define MINIX_INODES_PER_BLOCK ((BLOCK_SIZE)/(sizeof (struct minix_inode)))
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||
#define MINIX2_INODES_PER_BLOCK ((BLOCK_SIZE)/(sizeof (struct minix2_inode)))
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|
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#define MINIX_V1 0x0001 /* original minix fs */
|
||
#define MINIX_V2 0x0002 /* minix V2 fs */
|
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|
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#define INODE_VERSION(inode) inode->i_sb->u.minix_sb.s_version
|
||
|
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/*
|
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* This is the original minix inode layout on disk.
|
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* Note the 8-bit gid and atime and ctime.
|
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*/
|
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struct minix_inode {
|
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u16 i_mode;
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||
u16 i_uid;
|
||
u32 i_size;
|
||
u32 i_time;
|
||
u8 i_gid;
|
||
u8 i_nlinks;
|
||
u16 i_zone[9];
|
||
};
|
||
|
||
/*
|
||
* The new minix inode has all the time entries, as well as
|
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* long block numbers and a third indirect block (7+1+1+1
|
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* instead of 7+1+1). Also, some previously 8-bit values are
|
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* now 16-bit. The inode is now 64 bytes instead of 32.
|
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*/
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struct minix2_inode {
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||
u16 i_mode;
|
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u16 i_nlinks;
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u16 i_uid;
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||
u16 i_gid;
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||
u32 i_size;
|
||
u32 i_atime;
|
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u32 i_mtime;
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||
u32 i_ctime;
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u32 i_zone[10];
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||
};
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/*
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* minix super-block data on disk
|
||
*/
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||
struct minix_super_block {
|
||
u16 s_ninodes;
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||
u16 s_nzones;
|
||
u16 s_imap_blocks;
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||
u16 s_zmap_blocks;
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||
u16 s_firstdatazone;
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u16 s_log_zone_size;
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||
u32 s_max_size;
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||
u16 s_magic;
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||
u16 s_state;
|
||
u32 s_zones;
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||
};
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||
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||
struct minix_dir_entry {
|
||
u16 inode;
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char name[0];
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};
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#define BLOCK_SIZE_BITS 10
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#define BLOCK_SIZE (1<<BLOCK_SIZE_BITS)
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#define NAME_MAX 255 /* # chars in a file name */
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#define MINIX_INODES_PER_BLOCK ((BLOCK_SIZE)/(sizeof (struct minix_inode)))
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#define MINIX_VALID_FS 0x0001 /* Clean fs. */
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#define MINIX_ERROR_FS 0x0002 /* fs has errors. */
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||
|
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#define MINIX_SUPER_MAGIC 0x137F /* original minix fs */
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#define MINIX_SUPER_MAGIC2 0x138F /* minix fs, 30 char names */
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#ifndef BLKGETSIZE
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#define BLKGETSIZE _IO(0x12,96) /* return device size */
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#endif
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#ifdef MINIX2_SUPER_MAGIC2
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#define HAVE_MINIX2 1
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#endif
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#ifndef __linux__
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#define volatile
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#endif
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#define ROOT_INO 1
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#define UPPER(size,n) ((size+((n)-1))/(n))
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#define INODE_SIZE (sizeof(struct minix_inode))
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#ifdef HAVE_MINIX2
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#define INODE_SIZE2 (sizeof(struct minix2_inode))
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#define INODE_BLOCKS UPPER(INODES, (version2 ? MINIX2_INODES_PER_BLOCK \
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: MINIX_INODES_PER_BLOCK))
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#else
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#define INODE_BLOCKS UPPER(INODES, (MINIX_INODES_PER_BLOCK))
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#endif
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#define INODE_BUFFER_SIZE (INODE_BLOCKS * BLOCK_SIZE)
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#define BITS_PER_BLOCK (BLOCK_SIZE<<3)
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static char *program_version = "1.2 - 11/11/96";
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static char *device_name = NULL;
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static int IN;
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static int repair = 0, automatic = 0, verbose = 0, list = 0, show =
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0, warn_mode = 0, force = 0;
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static int directory = 0, regular = 0, blockdev = 0, chardev = 0, links =
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0, symlinks = 0, total = 0;
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static int changed = 0; /* flags if the filesystem has been changed */
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static int errors_uncorrected = 0; /* flag if some error was not corrected */
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static int dirsize = 16;
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static int namelen = 14;
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static int version2 = 0;
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static struct termios termios;
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static int termios_set = 0;
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/* File-name data */
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#define MAX_DEPTH 32
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static int name_depth = 0;
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||
// static char name_list[MAX_DEPTH][BUFSIZ + 1];
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static char **name_list = NULL;
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||
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static char *inode_buffer = NULL;
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#define Inode (((struct minix_inode *) inode_buffer)-1)
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#define Inode2 (((struct minix2_inode *) inode_buffer)-1)
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static char super_block_buffer[BLOCK_SIZE];
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#define Super (*(struct minix_super_block *)super_block_buffer)
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#define INODES ((unsigned long)Super.s_ninodes)
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#ifdef HAVE_MINIX2
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#define ZONES ((unsigned long)(version2 ? Super.s_zones : Super.s_nzones))
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#else
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#define ZONES ((unsigned long)(Super.s_nzones))
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#endif
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#define IMAPS ((unsigned long)Super.s_imap_blocks)
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#define ZMAPS ((unsigned long)Super.s_zmap_blocks)
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#define FIRSTZONE ((unsigned long)Super.s_firstdatazone)
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#define ZONESIZE ((unsigned long)Super.s_log_zone_size)
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#define MAXSIZE ((unsigned long)Super.s_max_size)
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#define MAGIC (Super.s_magic)
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#define NORM_FIRSTZONE (2+IMAPS+ZMAPS+INODE_BLOCKS)
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static char *inode_map;
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static char *zone_map;
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static unsigned char *inode_count = NULL;
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static unsigned char *zone_count = NULL;
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static void recursive_check(unsigned int ino);
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static void recursive_check2(unsigned int ino);
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#define inode_in_use(x) (isset(inode_map,(x)))
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#define zone_in_use(x) (isset(zone_map,(x)-FIRSTZONE+1))
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|
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#define mark_inode(x) (setbit(inode_map,(x)),changed=1)
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#define unmark_inode(x) (clrbit(inode_map,(x)),changed=1)
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#define mark_zone(x) (setbit(zone_map,(x)-FIRSTZONE+1),changed=1)
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#define unmark_zone(x) (clrbit(zone_map,(x)-FIRSTZONE+1),changed=1)
|
||
|
||
static void leave(int) __attribute__ ((noreturn));
|
||
static void leave(int status)
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{
|
||
if (termios_set)
|
||
tcsetattr(0, TCSANOW, &termios);
|
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exit(status);
|
||
}
|
||
|
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static void show_usage(void)
|
||
{
|
||
fprintf(stderr, "BusyBox v%s (%s) multi-call binary -- GPL2\n\n",
|
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BB_VER, BB_BT);
|
||
fprintf(stderr, "Usage: %s [-larvsmf] /dev/name\n", applet_name);
|
||
#ifndef BB_FEATURE_TRIVIAL_HELP
|
||
fprintf(stderr,
|
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"\nPerforms a consistency check for MINIX filesystems.\n\n");
|
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fprintf(stderr, "Options:\n");
|
||
fprintf(stderr, "\t-l\tLists all filenames\n");
|
||
fprintf(stderr, "\t-r\tPerform interactive repairs\n");
|
||
fprintf(stderr, "\t-a\tPerform automatic repairs\n");
|
||
fprintf(stderr, "\t-v\tverbose\n");
|
||
fprintf(stderr, "\t-s\tOutputs super-block information\n");
|
||
fprintf(stderr,
|
||
"\t-m\tActivates MINIX-like \"mode not cleared\" warnings\n");
|
||
fprintf(stderr, "\t-f\tForce file system check.\n\n");
|
||
#endif
|
||
leave(16);
|
||
}
|
||
|
||
static void die(const char *str)
|
||
{
|
||
fprintf(stderr, "%s: %s\n", applet_name, str);
|
||
leave(8);
|
||
}
|
||
|
||
/*
|
||
* This simply goes through the file-name data and prints out the
|
||
* current file.
|
||
*/
|
||
static void print_current_name(void)
|
||
{
|
||
int i = 0;
|
||
|
||
while (i < name_depth)
|
||
printf("/%.*s", namelen, name_list[i++]);
|
||
if (i == 0)
|
||
printf("/");
|
||
}
|
||
|
||
static int ask(const char *string, int def)
|
||
{
|
||
int c;
|
||
|
||
if (!repair) {
|
||
printf("\n");
|
||
errors_uncorrected = 1;
|
||
return 0;
|
||
}
|
||
if (automatic) {
|
||
printf("\n");
|
||
if (!def)
|
||
errors_uncorrected = 1;
|
||
return def;
|
||
}
|
||
printf(def ? "%s (y/n)? " : "%s (n/y)? ", string);
|
||
for (;;) {
|
||
fflush(stdout);
|
||
if ((c = getchar()) == EOF) {
|
||
if (!def)
|
||
errors_uncorrected = 1;
|
||
return def;
|
||
}
|
||
c = toupper(c);
|
||
if (c == 'Y') {
|
||
def = 1;
|
||
break;
|
||
} else if (c == 'N') {
|
||
def = 0;
|
||
break;
|
||
} else if (c == ' ' || c == '\n')
|
||
break;
|
||
}
|
||
if (def)
|
||
printf("y\n");
|
||
else {
|
||
printf("n\n");
|
||
errors_uncorrected = 1;
|
||
}
|
||
return def;
|
||
}
|
||
|
||
/*
|
||
* Make certain that we aren't checking a filesystem that is on a
|
||
* mounted partition. Code adapted from e2fsck, Copyright (C) 1993,
|
||
* 1994 Theodore Ts'o. Also licensed under GPL.
|
||
*/
|
||
static void check_mount(void)
|
||
{
|
||
FILE *f;
|
||
struct mntent *mnt;
|
||
int cont;
|
||
int fd;
|
||
|
||
if ((f = setmntent(MOUNTED, "r")) == NULL)
|
||
return;
|
||
while ((mnt = getmntent(f)) != NULL)
|
||
if (strcmp(device_name, mnt->mnt_fsname) == 0)
|
||
break;
|
||
endmntent(f);
|
||
if (!mnt)
|
||
return;
|
||
|
||
/*
|
||
* If the root is mounted read-only, then /etc/mtab is
|
||
* probably not correct; so we won't issue a warning based on
|
||
* it.
|
||
*/
|
||
fd = open(MOUNTED, O_RDWR);
|
||
if (fd < 0 && errno == EROFS)
|
||
return;
|
||
else
|
||
close(fd);
|
||
|
||
printf("%s is mounted. ", device_name);
|
||
if (isatty(0) && isatty(1))
|
||
cont = ask("Do you really want to continue", 0);
|
||
else
|
||
cont = 0;
|
||
if (!cont) {
|
||
printf("check aborted.\n");
|
||
exit(0);
|
||
}
|
||
return;
|
||
}
|
||
|
||
/*
|
||
* check_zone_nr checks to see that *nr is a valid zone nr. If it
|
||
* isn't, it will possibly be repaired. Check_zone_nr sets *corrected
|
||
* if an error was corrected, and returns the zone (0 for no zone
|
||
* or a bad zone-number).
|
||
*/
|
||
static int check_zone_nr(unsigned short *nr, int *corrected)
|
||
{
|
||
if (!*nr)
|
||
return 0;
|
||
if (*nr < FIRSTZONE)
|
||
printf("Zone nr < FIRSTZONE in file `");
|
||
else if (*nr >= ZONES)
|
||
printf("Zone nr >= ZONES in file `");
|
||
else
|
||
return *nr;
|
||
print_current_name();
|
||
printf("'.");
|
||
if (ask("Remove block", 1)) {
|
||
*nr = 0;
|
||
*corrected = 1;
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
#ifdef HAVE_MINIX2
|
||
static int check_zone_nr2(unsigned int *nr, int *corrected)
|
||
{
|
||
if (!*nr)
|
||
return 0;
|
||
if (*nr < FIRSTZONE)
|
||
printf("Zone nr < FIRSTZONE in file `");
|
||
else if (*nr >= ZONES)
|
||
printf("Zone nr >= ZONES in file `");
|
||
else
|
||
return *nr;
|
||
print_current_name();
|
||
printf("'.");
|
||
if (ask("Remove block", 1)) {
|
||
*nr = 0;
|
||
*corrected = 1;
|
||
}
|
||
return 0;
|
||
}
|
||
#endif
|
||
|
||
/*
|
||
* read-block reads block nr into the buffer at addr.
|
||
*/
|
||
static void read_block(unsigned int nr, char *addr)
|
||
{
|
||
if (!nr) {
|
||
memset(addr, 0, BLOCK_SIZE);
|
||
return;
|
||
}
|
||
if (BLOCK_SIZE * nr != lseek(IN, BLOCK_SIZE * nr, SEEK_SET)) {
|
||
printf("Read error: unable to seek to block in file '");
|
||
print_current_name();
|
||
printf("'\n");
|
||
memset(addr, 0, BLOCK_SIZE);
|
||
errors_uncorrected = 1;
|
||
} else if (BLOCK_SIZE != read(IN, addr, BLOCK_SIZE)) {
|
||
printf("Read error: bad block in file '");
|
||
print_current_name();
|
||
printf("'\n");
|
||
memset(addr, 0, BLOCK_SIZE);
|
||
errors_uncorrected = 1;
|
||
}
|
||
}
|
||
|
||
/*
|
||
* write_block writes block nr to disk.
|
||
*/
|
||
static void write_block(unsigned int nr, char *addr)
|
||
{
|
||
if (!nr)
|
||
return;
|
||
if (nr < FIRSTZONE || nr >= ZONES) {
|
||
printf("Internal error: trying to write bad block\n"
|
||
"Write request ignored\n");
|
||
errors_uncorrected = 1;
|
||
return;
|
||
}
|
||
if (BLOCK_SIZE * nr != lseek(IN, BLOCK_SIZE * nr, SEEK_SET))
|
||
die("seek failed in write_block");
|
||
if (BLOCK_SIZE != write(IN, addr, BLOCK_SIZE)) {
|
||
printf("Write error: bad block in file '");
|
||
print_current_name();
|
||
printf("'\n");
|
||
errors_uncorrected = 1;
|
||
}
|
||
}
|
||
|
||
/*
|
||
* map-block calculates the absolute block nr of a block in a file.
|
||
* It sets 'changed' if the inode has needed changing, and re-writes
|
||
* any indirect blocks with errors.
|
||
*/
|
||
static int map_block(struct minix_inode *inode, unsigned int blknr)
|
||
{
|
||
unsigned short ind[BLOCK_SIZE >> 1];
|
||
unsigned short dind[BLOCK_SIZE >> 1];
|
||
int blk_chg, block, result;
|
||
|
||
if (blknr < 7)
|
||
return check_zone_nr(inode->i_zone + blknr, &changed);
|
||
blknr -= 7;
|
||
if (blknr < 512) {
|
||
block = check_zone_nr(inode->i_zone + 7, &changed);
|
||
read_block(block, (char *) ind);
|
||
blk_chg = 0;
|
||
result = check_zone_nr(blknr + ind, &blk_chg);
|
||
if (blk_chg)
|
||
write_block(block, (char *) ind);
|
||
return result;
|
||
}
|
||
blknr -= 512;
|
||
block = check_zone_nr(inode->i_zone + 8, &changed);
|
||
read_block(block, (char *) dind);
|
||
blk_chg = 0;
|
||
result = check_zone_nr(dind + (blknr / 512), &blk_chg);
|
||
if (blk_chg)
|
||
write_block(block, (char *) dind);
|
||
block = result;
|
||
read_block(block, (char *) ind);
|
||
blk_chg = 0;
|
||
result = check_zone_nr(ind + (blknr % 512), &blk_chg);
|
||
if (blk_chg)
|
||
write_block(block, (char *) ind);
|
||
return result;
|
||
}
|
||
|
||
#ifdef HAVE_MINIX2
|
||
static int map_block2(struct minix2_inode *inode, unsigned int blknr)
|
||
{
|
||
unsigned int ind[BLOCK_SIZE >> 2];
|
||
unsigned int dind[BLOCK_SIZE >> 2];
|
||
unsigned int tind[BLOCK_SIZE >> 2];
|
||
int blk_chg, block, result;
|
||
|
||
if (blknr < 7)
|
||
return check_zone_nr2(inode->i_zone + blknr, &changed);
|
||
blknr -= 7;
|
||
if (blknr < 256) {
|
||
block = check_zone_nr2(inode->i_zone + 7, &changed);
|
||
read_block(block, (char *) ind);
|
||
blk_chg = 0;
|
||
result = check_zone_nr2(blknr + ind, &blk_chg);
|
||
if (blk_chg)
|
||
write_block(block, (char *) ind);
|
||
return result;
|
||
}
|
||
blknr -= 256;
|
||
if (blknr >= 256 * 256) {
|
||
block = check_zone_nr2(inode->i_zone + 8, &changed);
|
||
read_block(block, (char *) dind);
|
||
blk_chg = 0;
|
||
result = check_zone_nr2(dind + blknr / 256, &blk_chg);
|
||
if (blk_chg)
|
||
write_block(block, (char *) dind);
|
||
block = result;
|
||
read_block(block, (char *) ind);
|
||
blk_chg = 0;
|
||
result = check_zone_nr2(ind + blknr % 256, &blk_chg);
|
||
if (blk_chg)
|
||
write_block(block, (char *) ind);
|
||
return result;
|
||
}
|
||
blknr -= 256 * 256;
|
||
block = check_zone_nr2(inode->i_zone + 9, &changed);
|
||
read_block(block, (char *) tind);
|
||
blk_chg = 0;
|
||
result = check_zone_nr2(tind + blknr / (256 * 256), &blk_chg);
|
||
if (blk_chg)
|
||
write_block(block, (char *) tind);
|
||
block = result;
|
||
read_block(block, (char *) dind);
|
||
blk_chg = 0;
|
||
result = check_zone_nr2(dind + (blknr / 256) % 256, &blk_chg);
|
||
if (blk_chg)
|
||
write_block(block, (char *) dind);
|
||
block = result;
|
||
read_block(block, (char *) ind);
|
||
blk_chg = 0;
|
||
result = check_zone_nr2(ind + blknr % 256, &blk_chg);
|
||
if (blk_chg)
|
||
write_block(block, (char *) ind);
|
||
return result;
|
||
}
|
||
#endif
|
||
|
||
static void write_super_block(void)
|
||
{
|
||
/*
|
||
* Set the state of the filesystem based on whether or not there
|
||
* are uncorrected errors. The filesystem valid flag is
|
||
* unconditionally set if we get this far.
|
||
*/
|
||
Super.s_state |= MINIX_VALID_FS;
|
||
if (errors_uncorrected)
|
||
Super.s_state |= MINIX_ERROR_FS;
|
||
else
|
||
Super.s_state &= ~MINIX_ERROR_FS;
|
||
|
||
if (BLOCK_SIZE != lseek(IN, BLOCK_SIZE, SEEK_SET))
|
||
die("seek failed in write_super_block");
|
||
if (BLOCK_SIZE != write(IN, super_block_buffer, BLOCK_SIZE))
|
||
die("unable to write super-block");
|
||
|
||
return;
|
||
}
|
||
|
||
static void write_tables(void)
|
||
{
|
||
write_super_block();
|
||
|
||
if (IMAPS * BLOCK_SIZE != write(IN, inode_map, IMAPS * BLOCK_SIZE))
|
||
die("Unable to write inode map");
|
||
if (ZMAPS * BLOCK_SIZE != write(IN, zone_map, ZMAPS * BLOCK_SIZE))
|
||
die("Unable to write zone map");
|
||
if (INODE_BUFFER_SIZE != write(IN, inode_buffer, INODE_BUFFER_SIZE))
|
||
die("Unable to write inodes");
|
||
}
|
||
|
||
static void get_dirsize(void)
|
||
{
|
||
int block;
|
||
char blk[BLOCK_SIZE];
|
||
int size;
|
||
|
||
#if HAVE_MINIX2
|
||
if (version2)
|
||
block = Inode2[ROOT_INO].i_zone[0];
|
||
else
|
||
#endif
|
||
block = Inode[ROOT_INO].i_zone[0];
|
||
read_block(block, blk);
|
||
for (size = 16; size < BLOCK_SIZE; size <<= 1) {
|
||
if (strcmp(blk + size + 2, "..") == 0) {
|
||
dirsize = size;
|
||
namelen = size - 2;
|
||
return;
|
||
}
|
||
}
|
||
/* use defaults */
|
||
}
|
||
|
||
static void read_superblock(void)
|
||
{
|
||
if (BLOCK_SIZE != lseek(IN, BLOCK_SIZE, SEEK_SET))
|
||
die("seek failed");
|
||
if (BLOCK_SIZE != read(IN, super_block_buffer, BLOCK_SIZE))
|
||
die("unable to read super block");
|
||
if (MAGIC == MINIX_SUPER_MAGIC) {
|
||
namelen = 14;
|
||
dirsize = 16;
|
||
version2 = 0;
|
||
} else if (MAGIC == MINIX_SUPER_MAGIC2) {
|
||
namelen = 30;
|
||
dirsize = 32;
|
||
version2 = 0;
|
||
#ifdef HAVE_MINIX2
|
||
} else if (MAGIC == MINIX2_SUPER_MAGIC) {
|
||
namelen = 14;
|
||
dirsize = 16;
|
||
version2 = 1;
|
||
} else if (MAGIC == MINIX2_SUPER_MAGIC2) {
|
||
namelen = 30;
|
||
dirsize = 32;
|
||
version2 = 1;
|
||
#endif
|
||
} else
|
||
die("bad magic number in super-block");
|
||
if (ZONESIZE != 0 || BLOCK_SIZE != 1024)
|
||
die("Only 1k blocks/zones supported");
|
||
if (IMAPS * BLOCK_SIZE * 8 < INODES + 1)
|
||
die("bad s_imap_blocks field in super-block");
|
||
if (ZMAPS * BLOCK_SIZE * 8 < ZONES - FIRSTZONE + 1)
|
||
die("bad s_zmap_blocks field in super-block");
|
||
}
|
||
|
||
static void read_tables(void)
|
||
{
|
||
inode_map = xmalloc(IMAPS * BLOCK_SIZE);
|
||
zone_map = xmalloc(ZMAPS * BLOCK_SIZE);
|
||
memset(inode_map, 0, sizeof(inode_map));
|
||
memset(zone_map, 0, sizeof(zone_map));
|
||
inode_buffer = xmalloc(INODE_BUFFER_SIZE);
|
||
inode_count = xmalloc(INODES + 1);
|
||
zone_count = xmalloc(ZONES);
|
||
if (IMAPS * BLOCK_SIZE != read(IN, inode_map, IMAPS * BLOCK_SIZE))
|
||
die("Unable to read inode map");
|
||
if (ZMAPS * BLOCK_SIZE != read(IN, zone_map, ZMAPS * BLOCK_SIZE))
|
||
die("Unable to read zone map");
|
||
if (INODE_BUFFER_SIZE != read(IN, inode_buffer, INODE_BUFFER_SIZE))
|
||
die("Unable to read inodes");
|
||
if (NORM_FIRSTZONE != FIRSTZONE) {
|
||
printf("Warning: Firstzone != Norm_firstzone\n");
|
||
errors_uncorrected = 1;
|
||
}
|
||
get_dirsize();
|
||
if (show) {
|
||
printf("%ld inodes\n", INODES);
|
||
printf("%ld blocks\n", ZONES);
|
||
printf("Firstdatazone=%ld (%ld)\n", FIRSTZONE, NORM_FIRSTZONE);
|
||
printf("Zonesize=%d\n", BLOCK_SIZE << ZONESIZE);
|
||
printf("Maxsize=%ld\n", MAXSIZE);
|
||
printf("Filesystem state=%d\n", Super.s_state);
|
||
printf("namelen=%d\n\n", namelen);
|
||
}
|
||
}
|
||
|
||
struct minix_inode *get_inode(unsigned int nr)
|
||
{
|
||
struct minix_inode *inode;
|
||
|
||
if (!nr || nr > INODES)
|
||
return NULL;
|
||
total++;
|
||
inode = Inode + nr;
|
||
if (!inode_count[nr]) {
|
||
if (!inode_in_use(nr)) {
|
||
printf("Inode %d marked not used, but used for file '", nr);
|
||
print_current_name();
|
||
printf("'\n");
|
||
if (repair) {
|
||
if (ask("Mark in use", 1))
|
||
mark_inode(nr);
|
||
} else {
|
||
errors_uncorrected = 1;
|
||
}
|
||
}
|
||
if (S_ISDIR(inode->i_mode))
|
||
directory++;
|
||
else if (S_ISREG(inode->i_mode))
|
||
regular++;
|
||
else if (S_ISCHR(inode->i_mode))
|
||
chardev++;
|
||
else if (S_ISBLK(inode->i_mode))
|
||
blockdev++;
|
||
else if (S_ISLNK(inode->i_mode))
|
||
symlinks++;
|
||
else if (S_ISSOCK(inode->i_mode));
|
||
else if (S_ISFIFO(inode->i_mode));
|
||
else {
|
||
print_current_name();
|
||
printf(" has mode %05o\n", inode->i_mode);
|
||
}
|
||
|
||
} else
|
||
links++;
|
||
if (!++inode_count[nr]) {
|
||
printf("Warning: inode count too big.\n");
|
||
inode_count[nr]--;
|
||
errors_uncorrected = 1;
|
||
}
|
||
return inode;
|
||
}
|
||
|
||
#ifdef HAVE_MINIX2
|
||
struct minix2_inode *get_inode2(unsigned int nr)
|
||
{
|
||
struct minix2_inode *inode;
|
||
|
||
if (!nr || nr > INODES)
|
||
return NULL;
|
||
total++;
|
||
inode = Inode2 + nr;
|
||
if (!inode_count[nr]) {
|
||
if (!inode_in_use(nr)) {
|
||
printf("Inode %d marked not used, but used for file '", nr);
|
||
print_current_name();
|
||
printf("'\n");
|
||
if (repair) {
|
||
if (ask("Mark in use", 1))
|
||
mark_inode(nr);
|
||
else
|
||
errors_uncorrected = 1;
|
||
}
|
||
}
|
||
if (S_ISDIR(inode->i_mode))
|
||
directory++;
|
||
else if (S_ISREG(inode->i_mode))
|
||
regular++;
|
||
else if (S_ISCHR(inode->i_mode))
|
||
chardev++;
|
||
else if (S_ISBLK(inode->i_mode))
|
||
blockdev++;
|
||
else if (S_ISLNK(inode->i_mode))
|
||
symlinks++;
|
||
else if (S_ISSOCK(inode->i_mode));
|
||
else if (S_ISFIFO(inode->i_mode));
|
||
else {
|
||
print_current_name();
|
||
printf(" has mode %05o\n", inode->i_mode);
|
||
}
|
||
} else
|
||
links++;
|
||
if (!++inode_count[nr]) {
|
||
printf("Warning: inode count too big.\n");
|
||
inode_count[nr]--;
|
||
errors_uncorrected = 1;
|
||
}
|
||
return inode;
|
||
}
|
||
#endif
|
||
|
||
static void check_root(void)
|
||
{
|
||
struct minix_inode *inode = Inode + ROOT_INO;
|
||
|
||
if (!inode || !S_ISDIR(inode->i_mode))
|
||
die("root inode isn't a directory");
|
||
}
|
||
|
||
#ifdef HAVE_MINIX2
|
||
static void check_root2(void)
|
||
{
|
||
struct minix2_inode *inode = Inode2 + ROOT_INO;
|
||
|
||
if (!inode || !S_ISDIR(inode->i_mode))
|
||
die("root inode isn't a directory");
|
||
}
|
||
#endif
|
||
|
||
static int add_zone(unsigned short *znr, int *corrected)
|
||
{
|
||
int result;
|
||
int block;
|
||
|
||
result = 0;
|
||
block = check_zone_nr(znr, corrected);
|
||
if (!block)
|
||
return 0;
|
||
if (zone_count[block]) {
|
||
printf("Block has been used before. Now in file `");
|
||
print_current_name();
|
||
printf("'.");
|
||
if (ask("Clear", 1)) {
|
||
*znr = 0;
|
||
block = 0;
|
||
*corrected = 1;
|
||
}
|
||
}
|
||
if (!block)
|
||
return 0;
|
||
if (!zone_in_use(block)) {
|
||
printf("Block %d in file `", block);
|
||
print_current_name();
|
||
printf("' is marked not in use.");
|
||
if (ask("Correct", 1))
|
||
mark_zone(block);
|
||
}
|
||
if (!++zone_count[block])
|
||
zone_count[block]--;
|
||
return block;
|
||
}
|
||
|
||
#ifdef HAVE_MINIX2
|
||
static int add_zone2(unsigned int *znr, int *corrected)
|
||
{
|
||
int result;
|
||
int block;
|
||
|
||
result = 0;
|
||
block = check_zone_nr2(znr, corrected);
|
||
if (!block)
|
||
return 0;
|
||
if (zone_count[block]) {
|
||
printf("Block has been used before. Now in file `");
|
||
print_current_name();
|
||
printf("'.");
|
||
if (ask("Clear", 1)) {
|
||
*znr = 0;
|
||
block = 0;
|
||
*corrected = 1;
|
||
}
|
||
}
|
||
if (!block)
|
||
return 0;
|
||
if (!zone_in_use(block)) {
|
||
printf("Block %d in file `", block);
|
||
print_current_name();
|
||
printf("' is marked not in use.");
|
||
if (ask("Correct", 1))
|
||
mark_zone(block);
|
||
}
|
||
if (!++zone_count[block])
|
||
zone_count[block]--;
|
||
return block;
|
||
}
|
||
#endif
|
||
|
||
static void add_zone_ind(unsigned short *znr, int *corrected)
|
||
{
|
||
static char blk[BLOCK_SIZE];
|
||
int i, chg_blk = 0;
|
||
int block;
|
||
|
||
block = add_zone(znr, corrected);
|
||
if (!block)
|
||
return;
|
||
read_block(block, blk);
|
||
for (i = 0; i < (BLOCK_SIZE >> 1); i++)
|
||
add_zone(i + (unsigned short *) blk, &chg_blk);
|
||
if (chg_blk)
|
||
write_block(block, blk);
|
||
}
|
||
|
||
#ifdef HAVE_MINIX2
|
||
static void add_zone_ind2(unsigned int *znr, int *corrected)
|
||
{
|
||
static char blk[BLOCK_SIZE];
|
||
int i, chg_blk = 0;
|
||
int block;
|
||
|
||
block = add_zone2(znr, corrected);
|
||
if (!block)
|
||
return;
|
||
read_block(block, blk);
|
||
for (i = 0; i < BLOCK_SIZE >> 2; i++)
|
||
add_zone2(i + (unsigned int *) blk, &chg_blk);
|
||
if (chg_blk)
|
||
write_block(block, blk);
|
||
}
|
||
#endif
|
||
|
||
static void add_zone_dind(unsigned short *znr, int *corrected)
|
||
{
|
||
static char blk[BLOCK_SIZE];
|
||
int i, blk_chg = 0;
|
||
int block;
|
||
|
||
block = add_zone(znr, corrected);
|
||
if (!block)
|
||
return;
|
||
read_block(block, blk);
|
||
for (i = 0; i < (BLOCK_SIZE >> 1); i++)
|
||
add_zone_ind(i + (unsigned short *) blk, &blk_chg);
|
||
if (blk_chg)
|
||
write_block(block, blk);
|
||
}
|
||
|
||
#ifdef HAVE_MINIX2
|
||
static void add_zone_dind2(unsigned int *znr, int *corrected)
|
||
{
|
||
static char blk[BLOCK_SIZE];
|
||
int i, blk_chg = 0;
|
||
int block;
|
||
|
||
block = add_zone2(znr, corrected);
|
||
if (!block)
|
||
return;
|
||
read_block(block, blk);
|
||
for (i = 0; i < BLOCK_SIZE >> 2; i++)
|
||
add_zone_ind2(i + (unsigned int *) blk, &blk_chg);
|
||
if (blk_chg)
|
||
write_block(block, blk);
|
||
}
|
||
|
||
static void add_zone_tind2(unsigned int *znr, int *corrected)
|
||
{
|
||
static char blk[BLOCK_SIZE];
|
||
int i, blk_chg = 0;
|
||
int block;
|
||
|
||
block = add_zone2(znr, corrected);
|
||
if (!block)
|
||
return;
|
||
read_block(block, blk);
|
||
for (i = 0; i < BLOCK_SIZE >> 2; i++)
|
||
add_zone_dind2(i + (unsigned int *) blk, &blk_chg);
|
||
if (blk_chg)
|
||
write_block(block, blk);
|
||
}
|
||
#endif
|
||
|
||
static void check_zones(unsigned int i)
|
||
{
|
||
struct minix_inode *inode;
|
||
|
||
if (!i || i > INODES)
|
||
return;
|
||
if (inode_count[i] > 1) /* have we counted this file already? */
|
||
return;
|
||
inode = Inode + i;
|
||
if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
|
||
!S_ISLNK(inode->i_mode)) return;
|
||
for (i = 0; i < 7; i++)
|
||
add_zone(i + inode->i_zone, &changed);
|
||
add_zone_ind(7 + inode->i_zone, &changed);
|
||
add_zone_dind(8 + inode->i_zone, &changed);
|
||
}
|
||
|
||
#ifdef HAVE_MINIX2
|
||
static void check_zones2(unsigned int i)
|
||
{
|
||
struct minix2_inode *inode;
|
||
|
||
if (!i || i > INODES)
|
||
return;
|
||
if (inode_count[i] > 1) /* have we counted this file already? */
|
||
return;
|
||
inode = Inode2 + i;
|
||
if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode)
|
||
&& !S_ISLNK(inode->i_mode))
|
||
return;
|
||
for (i = 0; i < 7; i++)
|
||
add_zone2(i + inode->i_zone, &changed);
|
||
add_zone_ind2(7 + inode->i_zone, &changed);
|
||
add_zone_dind2(8 + inode->i_zone, &changed);
|
||
add_zone_tind2(9 + inode->i_zone, &changed);
|
||
}
|
||
#endif
|
||
|
||
static void check_file(struct minix_inode *dir, unsigned int offset)
|
||
{
|
||
static char blk[BLOCK_SIZE];
|
||
struct minix_inode *inode;
|
||
int ino;
|
||
char *name;
|
||
int block;
|
||
|
||
block = map_block(dir, offset / BLOCK_SIZE);
|
||
read_block(block, blk);
|
||
name = blk + (offset % BLOCK_SIZE) + 2;
|
||
ino = *(unsigned short *) (name - 2);
|
||
if (ino > INODES) {
|
||
print_current_name();
|
||
printf(" contains a bad inode number for file '");
|
||
printf("%.*s'.", namelen, name);
|
||
if (ask(" Remove", 1)) {
|
||
*(unsigned short *) (name - 2) = 0;
|
||
write_block(block, blk);
|
||
}
|
||
ino = 0;
|
||
}
|
||
if (name_depth < MAX_DEPTH)
|
||
strncpy(name_list[name_depth], name, namelen);
|
||
name_depth++;
|
||
inode = get_inode(ino);
|
||
name_depth--;
|
||
if (!offset) {
|
||
if (!inode || strcmp(".", name)) {
|
||
print_current_name();
|
||
printf(": bad directory: '.' isn't first\n");
|
||
errors_uncorrected = 1;
|
||
} else
|
||
return;
|
||
}
|
||
if (offset == dirsize) {
|
||
if (!inode || strcmp("..", name)) {
|
||
print_current_name();
|
||
printf(": bad directory: '..' isn't second\n");
|
||
errors_uncorrected = 1;
|
||
} else
|
||
return;
|
||
}
|
||
if (!inode)
|
||
return;
|
||
if (name_depth < MAX_DEPTH)
|
||
strncpy(name_list[name_depth], name, namelen);
|
||
name_depth++;
|
||
if (list) {
|
||
if (verbose)
|
||
printf("%6d %07o %3d ", ino, inode->i_mode, inode->i_nlinks);
|
||
print_current_name();
|
||
if (S_ISDIR(inode->i_mode))
|
||
printf(":\n");
|
||
else
|
||
printf("\n");
|
||
}
|
||
check_zones(ino);
|
||
if (inode && S_ISDIR(inode->i_mode))
|
||
recursive_check(ino);
|
||
name_depth--;
|
||
return;
|
||
}
|
||
|
||
#ifdef HAVE_MINIX2
|
||
static void check_file2(struct minix2_inode *dir, unsigned int offset)
|
||
{
|
||
static char blk[BLOCK_SIZE];
|
||
struct minix2_inode *inode;
|
||
int ino;
|
||
char *name;
|
||
int block;
|
||
|
||
block = map_block2(dir, offset / BLOCK_SIZE);
|
||
read_block(block, blk);
|
||
name = blk + (offset % BLOCK_SIZE) + 2;
|
||
ino = *(unsigned short *) (name - 2);
|
||
if (ino > INODES) {
|
||
print_current_name();
|
||
printf(" contains a bad inode number for file '");
|
||
printf("%.*s'.", namelen, name);
|
||
if (ask(" Remove", 1)) {
|
||
*(unsigned short *) (name - 2) = 0;
|
||
write_block(block, blk);
|
||
}
|
||
ino = 0;
|
||
}
|
||
if (name_depth < MAX_DEPTH)
|
||
strncpy(name_list[name_depth], name, namelen);
|
||
name_depth++;
|
||
inode = get_inode2(ino);
|
||
name_depth--;
|
||
if (!offset) {
|
||
if (!inode || strcmp(".", name)) {
|
||
print_current_name();
|
||
printf(": bad directory: '.' isn't first\n");
|
||
errors_uncorrected = 1;
|
||
} else
|
||
return;
|
||
}
|
||
if (offset == dirsize) {
|
||
if (!inode || strcmp("..", name)) {
|
||
print_current_name();
|
||
printf(": bad directory: '..' isn't second\n");
|
||
errors_uncorrected = 1;
|
||
} else
|
||
return;
|
||
}
|
||
if (!inode)
|
||
return;
|
||
name_depth++;
|
||
if (list) {
|
||
if (verbose)
|
||
printf("%6d %07o %3d ", ino, inode->i_mode, inode->i_nlinks);
|
||
print_current_name();
|
||
if (S_ISDIR(inode->i_mode))
|
||
printf(":\n");
|
||
else
|
||
printf("\n");
|
||
}
|
||
check_zones2(ino);
|
||
if (inode && S_ISDIR(inode->i_mode))
|
||
recursive_check2(ino);
|
||
name_depth--;
|
||
return;
|
||
}
|
||
#endif
|
||
|
||
static void recursive_check(unsigned int ino)
|
||
{
|
||
struct minix_inode *dir;
|
||
unsigned int offset;
|
||
|
||
dir = Inode + ino;
|
||
if (!S_ISDIR(dir->i_mode))
|
||
die("internal error");
|
||
if (dir->i_size < 2 * dirsize) {
|
||
print_current_name();
|
||
printf(": bad directory: size<32");
|
||
errors_uncorrected = 1;
|
||
}
|
||
for (offset = 0; offset < dir->i_size; offset += dirsize)
|
||
check_file(dir, offset);
|
||
}
|
||
|
||
#ifdef HAVE_MINIX2
|
||
static void recursive_check2(unsigned int ino)
|
||
{
|
||
struct minix2_inode *dir;
|
||
unsigned int offset;
|
||
|
||
dir = Inode2 + ino;
|
||
if (!S_ISDIR(dir->i_mode))
|
||
die("internal error");
|
||
if (dir->i_size < 2 * dirsize) {
|
||
print_current_name();
|
||
printf(": bad directory: size < 32");
|
||
errors_uncorrected = 1;
|
||
}
|
||
for (offset = 0; offset < dir->i_size; offset += dirsize)
|
||
check_file2(dir, offset);
|
||
}
|
||
#endif
|
||
|
||
static int bad_zone(int i)
|
||
{
|
||
char buffer[1024];
|
||
|
||
if (BLOCK_SIZE * i != lseek(IN, BLOCK_SIZE * i, SEEK_SET))
|
||
die("seek failed in bad_zone");
|
||
return (BLOCK_SIZE != read(IN, buffer, BLOCK_SIZE));
|
||
}
|
||
|
||
static void check_counts(void)
|
||
{
|
||
int i;
|
||
|
||
for (i = 1; i <= INODES; i++) {
|
||
if (!inode_in_use(i) && Inode[i].i_mode && warn_mode) {
|
||
printf("Inode %d mode not cleared.", i);
|
||
if (ask("Clear", 1)) {
|
||
Inode[i].i_mode = 0;
|
||
changed = 1;
|
||
}
|
||
}
|
||
if (!inode_count[i]) {
|
||
if (!inode_in_use(i))
|
||
continue;
|
||
printf("Inode %d not used, marked used in the bitmap.", i);
|
||
if (ask("Clear", 1))
|
||
unmark_inode(i);
|
||
continue;
|
||
}
|
||
if (!inode_in_use(i)) {
|
||
printf("Inode %d used, marked unused in the bitmap.", i);
|
||
if (ask("Set", 1))
|
||
mark_inode(i);
|
||
}
|
||
if (Inode[i].i_nlinks != inode_count[i]) {
|
||
printf("Inode %d (mode = %07o), i_nlinks=%d, counted=%d.",
|
||
i, Inode[i].i_mode, Inode[i].i_nlinks, inode_count[i]);
|
||
if (ask("Set i_nlinks to count", 1)) {
|
||
Inode[i].i_nlinks = inode_count[i];
|
||
changed = 1;
|
||
}
|
||
}
|
||
}
|
||
for (i = FIRSTZONE; i < ZONES; i++) {
|
||
if (zone_in_use(i) == zone_count[i])
|
||
continue;
|
||
if (!zone_count[i]) {
|
||
if (bad_zone(i))
|
||
continue;
|
||
printf("Zone %d: marked in use, no file uses it.", i);
|
||
if (ask("Unmark", 1))
|
||
unmark_zone(i);
|
||
continue;
|
||
}
|
||
printf("Zone %d: %sin use, counted=%d\n",
|
||
i, zone_in_use(i) ? "" : "not ", zone_count[i]);
|
||
}
|
||
}
|
||
|
||
#ifdef HAVE_MINIX2
|
||
static void check_counts2(void)
|
||
{
|
||
int i;
|
||
|
||
for (i = 1; i <= INODES; i++) {
|
||
if (!inode_in_use(i) && Inode2[i].i_mode && warn_mode) {
|
||
printf("Inode %d mode not cleared.", i);
|
||
if (ask("Clear", 1)) {
|
||
Inode2[i].i_mode = 0;
|
||
changed = 1;
|
||
}
|
||
}
|
||
if (!inode_count[i]) {
|
||
if (!inode_in_use(i))
|
||
continue;
|
||
printf("Inode %d not used, marked used in the bitmap.", i);
|
||
if (ask("Clear", 1))
|
||
unmark_inode(i);
|
||
continue;
|
||
}
|
||
if (!inode_in_use(i)) {
|
||
printf("Inode %d used, marked unused in the bitmap.", i);
|
||
if (ask("Set", 1))
|
||
mark_inode(i);
|
||
}
|
||
if (Inode2[i].i_nlinks != inode_count[i]) {
|
||
printf("Inode %d (mode = %07o), i_nlinks=%d, counted=%d.",
|
||
i, Inode2[i].i_mode, Inode2[i].i_nlinks,
|
||
inode_count[i]);
|
||
if (ask("Set i_nlinks to count", 1)) {
|
||
Inode2[i].i_nlinks = inode_count[i];
|
||
changed = 1;
|
||
}
|
||
}
|
||
}
|
||
for (i = FIRSTZONE; i < ZONES; i++) {
|
||
if (zone_in_use(i) == zone_count[i])
|
||
continue;
|
||
if (!zone_count[i]) {
|
||
if (bad_zone(i))
|
||
continue;
|
||
printf("Zone %d: marked in use, no file uses it.", i);
|
||
if (ask("Unmark", 1))
|
||
unmark_zone(i);
|
||
continue;
|
||
}
|
||
printf("Zone %d: %sin use, counted=%d\n",
|
||
i, zone_in_use(i) ? "" : "not ", zone_count[i]);
|
||
}
|
||
}
|
||
#endif
|
||
|
||
static void check(void)
|
||
{
|
||
memset(inode_count, 0, (INODES + 1) * sizeof(*inode_count));
|
||
memset(zone_count, 0, ZONES * sizeof(*zone_count));
|
||
check_zones(ROOT_INO);
|
||
recursive_check(ROOT_INO);
|
||
check_counts();
|
||
}
|
||
|
||
#ifdef HAVE_MINIX2
|
||
static void check2(void)
|
||
{
|
||
memset(inode_count, 0, (INODES + 1) * sizeof(*inode_count));
|
||
memset(zone_count, 0, ZONES * sizeof(*zone_count));
|
||
check_zones2(ROOT_INO);
|
||
recursive_check2(ROOT_INO);
|
||
check_counts2();
|
||
}
|
||
#endif
|
||
|
||
/* Wed Feb 9 15:17:06 MST 2000 */
|
||
/* dynamically allocate name_list (instead of making it static) */
|
||
static void alloc_name_list(void)
|
||
{
|
||
int i;
|
||
|
||
name_list = xmalloc(sizeof(char *) * MAX_DEPTH);
|
||
for (i = 0; i < MAX_DEPTH; i++)
|
||
name_list[i] = xmalloc(sizeof(char) * BUFSIZ + 1);
|
||
}
|
||
|
||
#if 0
|
||
/* execute this atexit() to deallocate name_list[] */
|
||
/* piptigger was here */
|
||
static void free_name_list(void)
|
||
{
|
||
int i;
|
||
|
||
if (name_list) {
|
||
for (i = 0; i < MAX_DEPTH; i++) {
|
||
if (name_list[i]) {
|
||
free(name_list[i]);
|
||
}
|
||
}
|
||
free(name_list);
|
||
}
|
||
}
|
||
#endif
|
||
|
||
extern int fsck_minix_main(int argc, char **argv)
|
||
{
|
||
struct termios tmp;
|
||
int count;
|
||
int retcode = 0;
|
||
|
||
alloc_name_list();
|
||
/* Don't bother to free memory. Exit does
|
||
* that automagically, so we can save a few bytes */
|
||
//atexit(free_name_list);
|
||
|
||
if (INODE_SIZE * MINIX_INODES_PER_BLOCK != BLOCK_SIZE)
|
||
die("bad inode size");
|
||
#ifdef HAVE_MINIX2
|
||
if (INODE_SIZE2 * MINIX2_INODES_PER_BLOCK != BLOCK_SIZE)
|
||
die("bad v2 inode size");
|
||
#endif
|
||
while (argc-- > 1) {
|
||
argv++;
|
||
if (argv[0][0] != '-') {
|
||
if (device_name)
|
||
show_usage();
|
||
else
|
||
device_name = argv[0];
|
||
} else
|
||
while (*++argv[0])
|
||
switch (argv[0][0]) {
|
||
case 'l':
|
||
list = 1;
|
||
break;
|
||
case 'a':
|
||
automatic = 1;
|
||
repair = 1;
|
||
break;
|
||
case 'r':
|
||
automatic = 0;
|
||
repair = 1;
|
||
break;
|
||
case 'v':
|
||
verbose = 1;
|
||
break;
|
||
case 's':
|
||
show = 1;
|
||
break;
|
||
case 'm':
|
||
warn_mode = 1;
|
||
break;
|
||
case 'f':
|
||
force = 1;
|
||
break;
|
||
default:
|
||
show_usage();
|
||
}
|
||
}
|
||
if (!device_name)
|
||
show_usage();
|
||
check_mount(); /* trying to check a mounted filesystem? */
|
||
if (repair && !automatic) {
|
||
if (!isatty(0) || !isatty(1))
|
||
die("need terminal for interactive repairs");
|
||
}
|
||
IN = open(device_name, repair ? O_RDWR : O_RDONLY);
|
||
if (IN < 0)
|
||
die("unable to open '%s'");
|
||
for (count = 0; count < 3; count++)
|
||
sync();
|
||
read_superblock();
|
||
|
||
/*
|
||
* Determine whether or not we should continue with the checking.
|
||
* This is based on the status of the filesystem valid and error
|
||
* flags and whether or not the -f switch was specified on the
|
||
* command line.
|
||
*/
|
||
printf("%s, %s\n", applet_name, program_version);
|
||
if (!(Super.s_state & MINIX_ERROR_FS) &&
|
||
(Super.s_state & MINIX_VALID_FS) && !force) {
|
||
if (repair)
|
||
printf("%s is clean, no check.\n", device_name);
|
||
return retcode;
|
||
} else if (force)
|
||
printf("Forcing filesystem check on %s.\n", device_name);
|
||
else if (repair)
|
||
printf("Filesystem on %s is dirty, needs checking.\n",
|
||
device_name);
|
||
|
||
read_tables();
|
||
|
||
if (repair && !automatic) {
|
||
tcgetattr(0, &termios);
|
||
tmp = termios;
|
||
tmp.c_lflag &= ~(ICANON | ECHO);
|
||
tcsetattr(0, TCSANOW, &tmp);
|
||
termios_set = 1;
|
||
}
|
||
#if HAVE_MINIX2
|
||
if (version2) {
|
||
check_root2();
|
||
check2();
|
||
} else
|
||
#endif
|
||
{
|
||
check_root();
|
||
check();
|
||
}
|
||
if (verbose) {
|
||
int i, free;
|
||
|
||
for (i = 1, free = 0; i <= INODES; i++)
|
||
if (!inode_in_use(i))
|
||
free++;
|
||
printf("\n%6ld inodes used (%ld%%)\n", (INODES - free),
|
||
100 * (INODES - free) / INODES);
|
||
for (i = FIRSTZONE, free = 0; i < ZONES; i++)
|
||
if (!zone_in_use(i))
|
||
free++;
|
||
printf("%6ld zones used (%ld%%)\n", (ZONES - free),
|
||
100 * (ZONES - free) / ZONES);
|
||
printf("\n%6d regular files\n"
|
||
"%6d directories\n"
|
||
"%6d character device files\n"
|
||
"%6d block device files\n"
|
||
"%6d links\n"
|
||
"%6d symbolic links\n"
|
||
"------\n"
|
||
"%6d files\n",
|
||
regular, directory, chardev, blockdev,
|
||
links - 2 * directory + 1, symlinks,
|
||
total - 2 * directory + 1);
|
||
}
|
||
if (changed) {
|
||
write_tables();
|
||
printf("----------------------------\n"
|
||
"FILE SYSTEM HAS BEEN CHANGED\n"
|
||
"----------------------------\n");
|
||
for (count = 0; count < 3; count++)
|
||
sync();
|
||
} else if (repair)
|
||
write_super_block();
|
||
|
||
if (repair && !automatic)
|
||
tcsetattr(0, TCSANOW, &termios);
|
||
|
||
if (changed)
|
||
retcode += 3;
|
||
if (errors_uncorrected)
|
||
retcode += 4;
|
||
return retcode;
|
||
}
|