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https://github.com/sheumann/hush.git
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88621d7398
(the e2fsprogs directory is too twisty and evil to easily fix, but I plan to rewrite it anyway so I'll just bump that up in priority a bit).
1426 lines
34 KiB
C
1426 lines
34 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* fsck.c - a file system consistency checker for Linux.
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*
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* (C) 1991, 1992 Linus Torvalds. This file may be redistributed
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* as per the GNU copyleft.
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*/
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/*
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* 09.11.91 - made the first rudimentary functions
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*
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* 10.11.91 - updated, does checking, no repairs yet.
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* 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.
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*
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*
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* 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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*
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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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*
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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 system-independent.
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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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* Usage: 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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#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/param.h>
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#include "busybox.h"
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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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uint16_t i_mode;
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uint16_t i_uid;
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uint32_t i_size;
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uint32_t i_time;
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uint8_t i_gid;
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uint8_t i_nlinks;
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uint16_t i_zone[9];
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};
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/*
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* 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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uint16_t i_mode;
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uint16_t i_nlinks;
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uint16_t i_uid;
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uint16_t i_gid;
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uint32_t i_size;
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uint32_t i_atime;
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uint32_t i_mtime;
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uint32_t i_ctime;
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uint32_t i_zone[10];
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};
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enum {
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MINIX_ROOT_INO = 1,
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MINIX_LINK_MAX = 250,
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MINIX2_LINK_MAX = 65530,
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MINIX_I_MAP_SLOTS = 8,
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MINIX_Z_MAP_SLOTS = 64,
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MINIX_SUPER_MAGIC = 0x137F, /* original minix fs */
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MINIX_SUPER_MAGIC2 = 0x138F, /* minix fs, 30 char names */
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MINIX2_SUPER_MAGIC = 0x2468, /* minix V2 fs */
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MINIX2_SUPER_MAGIC2 = 0x2478, /* minix V2 fs, 30 char names */
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MINIX_VALID_FS = 0x0001, /* Clean fs. */
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MINIX_ERROR_FS = 0x0002, /* fs has errors. */
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MINIX_INODES_PER_BLOCK = ((BLOCK_SIZE)/(sizeof (struct minix_inode))),
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MINIX2_INODES_PER_BLOCK = ((BLOCK_SIZE)/(sizeof (struct minix2_inode))),
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MINIX_V1 = 0x0001, /* original minix fs */
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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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* minix super-block data on disk
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*/
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struct minix_super_block {
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uint16_t s_ninodes;
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uint16_t s_nzones;
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uint16_t s_imap_blocks;
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uint16_t s_zmap_blocks;
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uint16_t s_firstdatazone;
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uint16_t s_log_zone_size;
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uint32_t s_max_size;
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uint16_t s_magic;
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uint16_t s_state;
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uint32_t s_zones;
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};
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struct minix_dir_entry {
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uint16_t inode;
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char name[0];
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};
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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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#ifndef BLKGETSIZE
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#define BLKGETSIZE _IO(0x12,96) /* return device size */
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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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enum { 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 CONFIG_FEATURE_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;
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static int IN;
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static int repair, automatic, verbose, list, show, warn_mode, force;
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static int directory, regular, blockdev, chardev, links, symlinks, total;
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static int changed; /* flags if the filesystem has been changed */
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static int errors_uncorrected; /* 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 struct termios termios;
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static int termios_set;
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static char *inode_buffer;
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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 CONFIG_FEATURE_MINIX2
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static int version2;
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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;
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static unsigned char *zone_count;
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static void recursive_check(unsigned int ino);
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#ifdef CONFIG_FEATURE_MINIX2
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static void recursive_check2(unsigned int ino);
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#endif
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static int bit(char *a, unsigned int i)
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{
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return (a[i >> 3] & (1<<(i & 7))) != 0;
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}
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#define inode_in_use(x) (bit(inode_map,(x)))
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#define zone_in_use(x) (bit(zone_map,(x)-FIRSTZONE+1))
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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)
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static void leave(int) ATTRIBUTE_NORETURN;
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static void leave(int status)
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{
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if (termios_set)
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tcsetattr(0, TCSANOW, &termios);
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exit(status);
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}
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static void die(const char *str)
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{
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bb_error_msg("%s", str);
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leave(8);
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}
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/* File-name data */
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enum { MAX_DEPTH = 32 };
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static int name_depth;
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static char *current_name;
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static char *name_component[MAX_DEPTH+1];
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/* Wed Feb 9 15:17:06 MST 2000 */
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/* dynamically allocate name_list (instead of making it static) */
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static void alloc_current_name(void)
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{
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current_name = xmalloc(MAX_DEPTH * (BUFSIZ + 1));
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current_name[0] = '/';
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current_name[1] = '\0';
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name_component[0] = ¤t_name[0];
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}
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#ifdef CONFIG_FEATURE_CLEAN_UP
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/* execute this atexit() to deallocate name_list[] */
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/* piptigger was here */
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static void free_current_name(void)
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{
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free(current_name);
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}
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#endif
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static void push_filename(const char *name)
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{
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// /dir/dir/dir/file
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// ^ ^ ^
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// [0] [1] [2] <-name_component[i]
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if (name_depth < MAX_DEPTH) {
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int len;
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char *p = name_component[name_depth];
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*p++ = '/';
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len = sprintf(p, "%.*s", namelen, name);
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name_component[name_depth + 1] = p + len;
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}
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name_depth++;
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}
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static void pop_filename(void) {
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name_depth--;
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if (name_depth < MAX_DEPTH) {
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*name_component[name_depth] = '\0';
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if (!name_depth) {
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current_name[0] = '/';
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current_name[1] = '\0';
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}
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}
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}
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static int ask(const char *string, int def)
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{
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int c;
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if (!repair) {
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printf("\n");
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errors_uncorrected = 1;
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return 0;
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}
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if (automatic) {
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printf("\n");
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if (!def)
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errors_uncorrected = 1;
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return def;
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}
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printf(def ? "%s (y/n)? " : "%s (n/y)? ", string);
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for (;;) {
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fflush(stdout);
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if ((c = getchar()) == EOF) {
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if (!def)
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errors_uncorrected = 1;
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return def;
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}
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c = toupper(c);
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if (c == 'Y') {
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def = 1;
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break;
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} else if (c == 'N') {
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def = 0;
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break;
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} else if (c == ' ' || c == '\n')
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break;
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}
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if (def)
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printf("y\n");
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else {
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printf("n\n");
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errors_uncorrected = 1;
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}
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return def;
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}
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/*
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* Make certain that we aren't checking a filesystem that is on a
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* mounted partition. Code adapted from e2fsck, Copyright (C) 1993,
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* 1994 Theodore Ts'o. Also licensed under GPL.
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*/
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static void check_mount(void)
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{
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FILE *f;
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struct mntent *mnt;
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int cont;
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int fd;
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if ((f = setmntent(MOUNTED, "r")) == NULL)
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return;
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while ((mnt = getmntent(f)) != NULL)
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if (strcmp(device_name, mnt->mnt_fsname) == 0)
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break;
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endmntent(f);
|
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if (!mnt)
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return;
|
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|
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/*
|
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* If the root is mounted read-only, then /etc/mtab is
|
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* probably not correct; so we won't issue a warning based on
|
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* it.
|
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*/
|
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fd = open(MOUNTED, O_RDWR);
|
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if (fd < 0 && errno == EROFS)
|
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return;
|
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else
|
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close(fd);
|
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|
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printf("%s is mounted. ", device_name);
|
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cont = 0;
|
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if (isatty(0) && isatty(1))
|
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cont = ask("Do you really want to continue", 0);
|
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if (!cont) {
|
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printf("Check aborted\n");
|
||
exit(0);
|
||
}
|
||
return;
|
||
}
|
||
|
||
/*
|
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* 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_nr2(uint32_t *nr, int *corrected)
|
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{
|
||
const char *msg;
|
||
if (!*nr)
|
||
return 0;
|
||
if (*nr < FIRSTZONE)
|
||
msg = "< FIRSTZONE";
|
||
else if (*nr >= ZONES)
|
||
msg = ">= ZONES";
|
||
else
|
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return *nr;
|
||
printf("Zone nr %s in file '%s'. ", msg, current_name);
|
||
if (ask("Remove block", 1)) {
|
||
*nr = 0;
|
||
*corrected = 1;
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
static int check_zone_nr(uint16_t *nr, int *corrected)
|
||
{
|
||
uint32_t nr32 = *nr;
|
||
int r = check_zone_nr2(&nr32, corrected);
|
||
*nr = (uint16_t)nr32;
|
||
return r;
|
||
}
|
||
|
||
/*
|
||
* 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("%s: unable to seek to block in file '%s'\n",
|
||
bb_msg_read_error, current_name);
|
||
errors_uncorrected = 1;
|
||
memset(addr, 0, BLOCK_SIZE);
|
||
} else if (BLOCK_SIZE != read(IN, addr, BLOCK_SIZE)) {
|
||
printf("%s: bad block in file '%s'\n",
|
||
bb_msg_read_error, current_name);
|
||
errors_uncorrected = 1;
|
||
memset(addr, 0, BLOCK_SIZE);
|
||
}
|
||
}
|
||
|
||
/*
|
||
* 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("%s: bad block in file '%s'\n",
|
||
bb_msg_write_error, current_name);
|
||
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)
|
||
{
|
||
uint16_t ind[BLOCK_SIZE >> 1];
|
||
uint16_t 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 CONFIG_FEATURE_MINIX2
|
||
static int map_block2(struct minix2_inode *inode, unsigned int blknr)
|
||
{
|
||
uint32_t ind[BLOCK_SIZE >> 2];
|
||
uint32_t dind[BLOCK_SIZE >> 2];
|
||
uint32_t 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");
|
||
}
|
||
|
||
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;
|
||
|
||
#ifdef CONFIG_FEATURE_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");
|
||
/* already initialized to:
|
||
namelen = 14;
|
||
dirsize = 16;
|
||
version2 = 0;
|
||
*/
|
||
if (MAGIC == MINIX_SUPER_MAGIC) {
|
||
} else if (MAGIC == MINIX_SUPER_MAGIC2) {
|
||
namelen = 30;
|
||
dirsize = 32;
|
||
#ifdef CONFIG_FEATURE_MINIX2
|
||
} else if (MAGIC == MINIX2_SUPER_MAGIC) {
|
||
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 = xzalloc(IMAPS * BLOCK_SIZE);
|
||
zone_map = xzalloc(ZMAPS * BLOCK_SIZE);
|
||
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"
|
||
"%ld blocks\n"
|
||
"Firstdatazone=%ld (%ld)\n"
|
||
"Zonesize=%d\n"
|
||
"Maxsize=%ld\n"
|
||
"Filesystem state=%d\n"
|
||
"namelen=%d\n\n",
|
||
INODES,
|
||
ZONES,
|
||
FIRSTZONE, NORM_FIRSTZONE,
|
||
BLOCK_SIZE << ZONESIZE,
|
||
MAXSIZE,
|
||
Super.s_state,
|
||
namelen);
|
||
}
|
||
}
|
||
|
||
static 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 is marked as 'unused', but it is used "
|
||
"for file '%s'\n", nr, current_name);
|
||
if (repair) {
|
||
if (ask("Mark as '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 {
|
||
printf("%s has mode %05o\n", current_name, 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 CONFIG_FEATURE_MINIX2
|
||
static 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 is marked as 'unused', but it is used "
|
||
"for file '%s'\n", nr, current_name);
|
||
if (repair) {
|
||
if (ask("Mark as '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 {
|
||
printf("%s has mode %05o\n", current_name, 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 CONFIG_FEATURE_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(uint16_t *znr, int *corrected)
|
||
{
|
||
int result;
|
||
int block;
|
||
|
||
result = 0;
|
||
block = check_zone_nr(znr, corrected);
|
||
if (!block)
|
||
return 0;
|
||
if (zone_count[block]) {
|
||
printf("Already used block is reused in file '%s'. ",
|
||
current_name);
|
||
if (ask("Clear", 1)) {
|
||
*znr = 0;
|
||
block = 0;
|
||
*corrected = 1;
|
||
return 0;
|
||
}
|
||
}
|
||
if (!zone_in_use(block)) {
|
||
printf("Block %d in file '%s' is marked as 'unused'. ",
|
||
block, current_name);
|
||
if (ask("Correct", 1))
|
||
mark_zone(block);
|
||
}
|
||
if (!++zone_count[block])
|
||
zone_count[block]--;
|
||
return block;
|
||
}
|
||
|
||
#ifdef CONFIG_FEATURE_MINIX2
|
||
static int add_zone2(uint32_t *znr, int *corrected)
|
||
{
|
||
int result;
|
||
int block;
|
||
|
||
result = 0;
|
||
block = check_zone_nr2(znr, corrected);
|
||
if (!block)
|
||
return 0;
|
||
if (zone_count[block]) {
|
||
printf("Already used block is reused in file '%s'. ",
|
||
current_name);
|
||
if (ask("Clear", 1)) {
|
||
*znr = 0;
|
||
block = 0;
|
||
*corrected = 1;
|
||
return 0;
|
||
}
|
||
}
|
||
if (!zone_in_use(block)) {
|
||
printf("Block %d in file '%s' is marked as 'unused'. ",
|
||
block, current_name);
|
||
if (ask("Correct", 1))
|
||
mark_zone(block);
|
||
}
|
||
if (!++zone_count[block])
|
||
zone_count[block]--;
|
||
return block;
|
||
}
|
||
#endif
|
||
|
||
static void add_zone_ind(uint16_t *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 + (uint16_t *) blk, &chg_blk);
|
||
if (chg_blk)
|
||
write_block(block, blk);
|
||
}
|
||
|
||
#ifdef CONFIG_FEATURE_MINIX2
|
||
static void add_zone_ind2(uint32_t *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 + (uint32_t *) blk, &chg_blk);
|
||
if (chg_blk)
|
||
write_block(block, blk);
|
||
}
|
||
#endif
|
||
|
||
static void add_zone_dind(uint16_t *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 + (uint16_t *) blk, &blk_chg);
|
||
if (blk_chg)
|
||
write_block(block, blk);
|
||
}
|
||
|
||
#ifdef CONFIG_FEATURE_MINIX2
|
||
static void add_zone_dind2(uint32_t *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 + (uint32_t *) blk, &blk_chg);
|
||
if (blk_chg)
|
||
write_block(block, blk);
|
||
}
|
||
|
||
static void add_zone_tind2(uint32_t *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 + (uint32_t *) 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 CONFIG_FEATURE_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 = *(uint16_t *) (name - 2);
|
||
if (ino > INODES) {
|
||
printf("%s contains a bad inode number for file '%.*s'. ",
|
||
current_name, namelen, name);
|
||
if (ask("Remove", 1)) {
|
||
*(uint16_t *) (name - 2) = 0;
|
||
write_block(block, blk);
|
||
}
|
||
ino = 0;
|
||
}
|
||
push_filename(name);
|
||
inode = get_inode(ino);
|
||
pop_filename();
|
||
if (!offset) {
|
||
if (!inode || strcmp(".", name)) {
|
||
printf("%s: bad directory: '.' isn't first\n", current_name);
|
||
errors_uncorrected = 1;
|
||
} else
|
||
return;
|
||
}
|
||
if (offset == dirsize) {
|
||
if (!inode || strcmp("..", name)) {
|
||
printf("%s: bad directory: '..' isn't second\n", current_name);
|
||
errors_uncorrected = 1;
|
||
} else
|
||
return;
|
||
}
|
||
if (!inode)
|
||
return;
|
||
push_filename(name);
|
||
if (list) {
|
||
if (verbose)
|
||
printf("%6d %07o %3d ", ino, inode->i_mode, inode->i_nlinks);
|
||
printf("%s%s\n", current_name, S_ISDIR(inode->i_mode) ? ":" : "");
|
||
}
|
||
check_zones(ino);
|
||
if (inode && S_ISDIR(inode->i_mode))
|
||
recursive_check(ino);
|
||
pop_filename();
|
||
return;
|
||
}
|
||
|
||
#ifdef CONFIG_FEATURE_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 = *(uint16_t *) (name - 2);
|
||
if (ino > INODES) {
|
||
printf("%s contains a bad inode number for file '%.*s'. ",
|
||
current_name, namelen, name);
|
||
if (ask("Remove", 1)) {
|
||
*(uint16_t *) (name - 2) = 0;
|
||
write_block(block, blk);
|
||
}
|
||
ino = 0;
|
||
}
|
||
push_filename(name);
|
||
inode = get_inode2(ino);
|
||
pop_filename();
|
||
if (!offset) {
|
||
if (!inode || strcmp(".", name)) {
|
||
printf("%s: bad directory: '.' isn't first\n", current_name);
|
||
errors_uncorrected = 1;
|
||
} else
|
||
return;
|
||
}
|
||
if (offset == dirsize) {
|
||
if (!inode || strcmp("..", name)) {
|
||
printf("%s: bad directory: '..' isn't second\n", current_name);
|
||
errors_uncorrected = 1;
|
||
} else
|
||
return;
|
||
}
|
||
if (!inode)
|
||
return;
|
||
push_filename(name);
|
||
if (list) {
|
||
if (verbose)
|
||
printf("%6d %07o %3d ", ino, inode->i_mode, inode->i_nlinks);
|
||
printf("%s%s\n", current_name, S_ISDIR(inode->i_mode) ? ":" : "");
|
||
}
|
||
check_zones2(ino);
|
||
if (inode && S_ISDIR(inode->i_mode))
|
||
recursive_check2(ino);
|
||
pop_filename();
|
||
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) {
|
||
printf("%s: bad directory: size<32", current_name);
|
||
errors_uncorrected = 1;
|
||
}
|
||
for (offset = 0; offset < dir->i_size; offset += dirsize)
|
||
check_file(dir, offset);
|
||
}
|
||
|
||
#ifdef CONFIG_FEATURE_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) {
|
||
printf("%s: bad directory: size<32", current_name);
|
||
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 (warn_mode && Inode[i].i_mode && !inode_in_use(i)) {
|
||
printf("Inode %d has non-zero mode. ", i);
|
||
if (ask("Clear", 1)) {
|
||
Inode[i].i_mode = 0;
|
||
changed = 1;
|
||
}
|
||
}
|
||
if (!inode_count[i]) {
|
||
if (!inode_in_use(i))
|
||
continue;
|
||
printf("Unused inode %d is marked as 'used' in the bitmap. ", i);
|
||
if (ask("Clear", 1))
|
||
unmark_inode(i);
|
||
continue;
|
||
}
|
||
if (!inode_in_use(i)) {
|
||
printf("Inode %d is used, but marked as '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 is marked 'in use', but 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 CONFIG_FEATURE_MINIX2
|
||
static void check_counts2(void)
|
||
{
|
||
int i;
|
||
|
||
for (i = 1; i <= INODES; i++) {
|
||
if (warn_mode && Inode2[i].i_mode && !inode_in_use(i)) {
|
||
printf("Inode %d has non-zero mode. ", i);
|
||
if (ask("Clear", 1)) {
|
||
Inode2[i].i_mode = 0;
|
||
changed = 1;
|
||
}
|
||
}
|
||
if (!inode_count[i]) {
|
||
if (!inode_in_use(i))
|
||
continue;
|
||
printf("Unused inode %d is marked as 'used' in the bitmap. ", i);
|
||
if (ask("Clear", 1))
|
||
unmark_inode(i);
|
||
continue;
|
||
}
|
||
if (!inode_in_use(i)) {
|
||
printf("Inode %d is used, but marked as '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 is marked 'in use', but 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 CONFIG_FEATURE_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
|
||
|
||
int fsck_minix_main(int argc, char **argv)
|
||
{
|
||
struct termios tmp;
|
||
int retcode = 0;
|
||
|
||
alloc_current_name();
|
||
#ifdef CONFIG_FEATURE_CLEAN_UP
|
||
/* Don't bother to free memory. Exit does
|
||
* that automagically, so we can save a few bytes */
|
||
atexit(free_current_name);
|
||
#endif
|
||
|
||
if (INODE_SIZE * MINIX_INODES_PER_BLOCK != BLOCK_SIZE)
|
||
die("Bad inode size");
|
||
#ifdef CONFIG_FEATURE_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)
|
||
bb_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:
|
||
bb_show_usage();
|
||
}
|
||
}
|
||
if (!device_name)
|
||
bb_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){
|
||
printf("Unable to open device '%s'\n", device_name);
|
||
leave(8);
|
||
}
|
||
sync(); /* paranoia? */
|
||
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", bb_applet_name, program_version);
|
||
if (!(Super.s_state & MINIX_ERROR_FS) &&
|
||
(Super.s_state & MINIX_VALID_FS) && !force) {
|
||
if (repair)
|
||
printf("%s is clean, check is skipped\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;
|
||
}
|
||
#ifdef CONFIG_FEATURE_MINIX2
|
||
if (version2) {
|
||
check_root2();
|
||
check2();
|
||
} else
|
||
#endif
|
||
{
|
||
check_root();
|
||
check();
|
||
}
|
||
if (verbose) {
|
||
int i, free_cnt;
|
||
|
||
for (i = 1, free_cnt = 0; i <= INODES; i++)
|
||
if (!inode_in_use(i))
|
||
free_cnt++;
|
||
printf("\n%6ld inodes used (%ld%%)\n", (INODES - free_cnt),
|
||
100 * (INODES - free_cnt) / INODES);
|
||
for (i = FIRSTZONE, free_cnt = 0; i < ZONES; i++)
|
||
if (!zone_in_use(i))
|
||
free_cnt++;
|
||
printf("%6ld zones used (%ld%%)\n\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",
|
||
(ZONES - free_cnt), 100 * (ZONES - free_cnt) / ZONES,
|
||
regular, directory, chardev, blockdev,
|
||
links - 2 * directory + 1, symlinks,
|
||
total - 2 * directory + 1);
|
||
}
|
||
if (changed) {
|
||
write_tables();
|
||
printf("FILE SYSTEM HAS BEEN CHANGED\n");
|
||
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;
|
||
}
|