Index: head/sbin/fsck_ffs/fsck.h =================================================================== --- head/sbin/fsck_ffs/fsck.h (revision 328012) +++ head/sbin/fsck_ffs/fsck.h (revision 328013) @@ -1,477 +1,478 @@ /*- * SPDX-License-Identifier: BSD-3-Clause and BSD-2-Clause-FreeBSD * * Copyright (c) 2002 Networks Associates Technology, Inc. * All rights reserved. * * This software was developed for the FreeBSD Project by Marshall * Kirk McKusick and Network Associates Laboratories, the Security * Research Division of Network Associates, Inc. under DARPA/SPAWAR * contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA CHATS * research program. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * Copyright (c) 1980, 1986, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)fsck.h 8.4 (Berkeley) 5/9/95 * $FreeBSD$ */ #ifndef _FSCK_H_ #define _FSCK_H_ #include #include #include #include #define MAXDUP 10 /* limit on dup blks (per inode) */ #define MAXBAD 10 /* limit on bad blks (per inode) */ #define MINBUFS 10 /* minimum number of buffers required */ #define MAXBUFS 40 /* maximum space to allocate to buffers */ #define INOBUFSIZE 64*1024 /* size of buffer to read inodes in pass1 */ #define ZEROBUFSIZE (dev_bsize * 128) /* size of zero buffer used by -Z */ union dinode { struct ufs1_dinode dp1; struct ufs2_dinode dp2; }; #define DIP(dp, field) \ ((sblock.fs_magic == FS_UFS1_MAGIC) ? \ (dp)->dp1.field : (dp)->dp2.field) #define DIP_SET(dp, field, val) do { \ if (sblock.fs_magic == FS_UFS1_MAGIC) \ (dp)->dp1.field = (val); \ else \ (dp)->dp2.field = (val); \ } while (0) /* * Each inode on the file system is described by the following structure. * The linkcnt is initially set to the value in the inode. Each time it * is found during the descent in passes 2, 3, and 4 the count is * decremented. Any inodes whose count is non-zero after pass 4 needs to * have its link count adjusted by the value remaining in ino_linkcnt. */ struct inostat { char ino_state; /* state of inode, see below */ char ino_type; /* type of inode */ short ino_linkcnt; /* number of links not found */ }; /* * Inode states. */ #define USTATE 0x1 /* inode not allocated */ #define FSTATE 0x2 /* inode is file */ #define FZLINK 0x3 /* inode is file with a link count of zero */ #define DSTATE 0x4 /* inode is directory */ #define DZLINK 0x5 /* inode is directory with a zero link count */ #define DFOUND 0x6 /* directory found during descent */ /* 0x7 UNUSED - see S_IS_DVALID() definition */ #define DCLEAR 0x8 /* directory is to be cleared */ #define FCLEAR 0x9 /* file is to be cleared */ /* DUNFOUND === (state == DSTATE || state == DZLINK) */ #define S_IS_DUNFOUND(state) (((state) & ~0x1) == DSTATE) /* DVALID === (state == DSTATE || state == DZLINK || state == DFOUND) */ #define S_IS_DVALID(state) (((state) & ~0x3) == DSTATE) #define INO_IS_DUNFOUND(ino) S_IS_DUNFOUND(inoinfo(ino)->ino_state) #define INO_IS_DVALID(ino) S_IS_DVALID(inoinfo(ino)->ino_state) /* * Inode state information is contained on per cylinder group lists * which are described by the following structure. */ struct inostatlist { long il_numalloced; /* number of inodes allocated in this cg */ struct inostat *il_stat;/* inostat info for this cylinder group */ } *inostathead; /* * buffer cache structure. */ struct bufarea { TAILQ_ENTRY(bufarea) b_list; /* buffer list */ ufs2_daddr_t b_bno; int b_size; int b_errs; int b_flags; int b_type; union { char *b_buf; /* buffer space */ ufs1_daddr_t *b_indir1; /* UFS1 indirect block */ ufs2_daddr_t *b_indir2; /* UFS2 indirect block */ struct fs *b_fs; /* super block */ struct cg *b_cg; /* cylinder group */ struct ufs1_dinode *b_dinode1; /* UFS1 inode block */ struct ufs2_dinode *b_dinode2; /* UFS2 inode block */ } b_un; char b_dirty; }; #define IBLK(bp, i) \ ((sblock.fs_magic == FS_UFS1_MAGIC) ? \ (bp)->b_un.b_indir1[i] : (bp)->b_un.b_indir2[i]) #define IBLK_SET(bp, i, val) do { \ if (sblock.fs_magic == FS_UFS1_MAGIC) \ (bp)->b_un.b_indir1[i] = (val); \ else \ (bp)->b_un.b_indir2[i] = (val); \ } while (0) /* * Buffer flags */ #define B_INUSE 0x00000001 /* Buffer is in use */ /* * Type of data in buffer */ #define BT_UNKNOWN 0 /* Buffer holds a superblock */ #define BT_SUPERBLK 1 /* Buffer holds a superblock */ #define BT_CYLGRP 2 /* Buffer holds a cylinder group map */ #define BT_LEVEL1 3 /* Buffer holds single level indirect */ #define BT_LEVEL2 4 /* Buffer holds double level indirect */ #define BT_LEVEL3 5 /* Buffer holds triple level indirect */ #define BT_EXTATTR 6 /* Buffer holds external attribute data */ #define BT_INODES 7 /* Buffer holds external attribute data */ #define BT_DIRDATA 8 /* Buffer holds directory data */ #define BT_DATA 9 /* Buffer holds user data */ #define BT_NUMBUFTYPES 10 #define BT_NAMES { \ "unknown", \ "Superblock", \ "Cylinder Group", \ "Single Level Indirect", \ "Double Level Indirect", \ "Triple Level Indirect", \ "External Attribute", \ "Inode Block", \ "Directory Contents", \ "User Data" } extern long readcnt[BT_NUMBUFTYPES]; extern long totalreadcnt[BT_NUMBUFTYPES]; extern struct timespec readtime[BT_NUMBUFTYPES]; extern struct timespec totalreadtime[BT_NUMBUFTYPES]; extern struct timespec startprog; extern struct bufarea sblk; /* file system superblock */ extern struct bufarea *pdirbp; /* current directory contents */ extern struct bufarea *pbp; /* current inode block */ #define dirty(bp) do { \ if (fswritefd < 0) \ pfatal("SETTING DIRTY FLAG IN READ_ONLY MODE\n"); \ else \ (bp)->b_dirty = 1; \ } while (0) #define initbarea(bp, type) do { \ (bp)->b_dirty = 0; \ (bp)->b_bno = (ufs2_daddr_t)-1; \ (bp)->b_flags = 0; \ (bp)->b_type = type; \ } while (0) #define sbdirty() dirty(&sblk) #define sblock (*sblk.b_un.b_fs) enum fixstate {DONTKNOW, NOFIX, FIX, IGNORE}; extern ino_t cursnapshot; struct inodesc { enum fixstate id_fix; /* policy on fixing errors */ int (*id_func)(struct inodesc *); /* function to be applied to blocks of inode */ ino_t id_number; /* inode number described */ ino_t id_parent; /* for DATA nodes, their parent */ ufs_lbn_t id_lbn; /* logical block number of current block */ ufs2_daddr_t id_blkno; /* current block number being examined */ int id_numfrags; /* number of frags contained in block */ off_t id_filesize; /* for DATA nodes, the size of the directory */ ufs2_daddr_t id_entryno;/* for DATA nodes, current entry number */ int id_loc; /* for DATA nodes, current location in dir */ struct direct *id_dirp; /* for DATA nodes, ptr to current entry */ char *id_name; /* for DATA nodes, name to find or enter */ char id_type; /* type of descriptor, DATA or ADDR */ }; /* file types */ #define DATA 1 /* a directory */ #define SNAP 2 /* a snapshot */ #define ADDR 3 /* anything but a directory or a snapshot */ /* * Linked list of duplicate blocks. * * The list is composed of two parts. The first part of the * list (from duplist through the node pointed to by muldup) * contains a single copy of each duplicate block that has been * found. The second part of the list (from muldup to the end) * contains duplicate blocks that have been found more than once. * To check if a block has been found as a duplicate it is only * necessary to search from duplist through muldup. To find the * total number of times that a block has been found as a duplicate * the entire list must be searched for occurrences of the block * in question. The following diagram shows a sample list where * w (found twice), x (found once), y (found three times), and z * (found once) are duplicate block numbers: * * w -> y -> x -> z -> y -> w -> y * ^ ^ * | | * duplist muldup */ struct dups { struct dups *next; ufs2_daddr_t dup; }; struct dups *duplist; /* head of dup list */ struct dups *muldup; /* end of unique duplicate dup block numbers */ /* * Inode cache data structures. */ struct inoinfo { struct inoinfo *i_nexthash; /* next entry in hash chain */ ino_t i_number; /* inode number of this entry */ ino_t i_parent; /* inode number of parent */ ino_t i_dotdot; /* inode number of `..' */ size_t i_isize; /* size of inode */ u_int i_numblks; /* size of block array in bytes */ ufs2_daddr_t i_blks[1]; /* actually longer */ } **inphead, **inpsort; extern long dirhash, inplast; extern unsigned long numdirs, listmax; extern long countdirs; /* number of directories we actually found */ #define MIBSIZE 3 /* size of fsck sysctl MIBs */ extern int adjrefcnt[MIBSIZE]; /* MIB command to adjust inode reference cnt */ extern int adjblkcnt[MIBSIZE]; /* MIB command to adjust inode block count */ extern int adjndir[MIBSIZE]; /* MIB command to adjust number of directories */ extern int adjnbfree[MIBSIZE]; /* MIB command to adjust number of free blocks */ extern int adjnifree[MIBSIZE]; /* MIB command to adjust number of free inodes */ extern int adjnffree[MIBSIZE]; /* MIB command to adjust number of free frags */ extern int adjnumclusters[MIBSIZE]; /* MIB command to adjust number of free clusters */ extern int freefiles[MIBSIZE]; /* MIB command to free a set of files */ extern int freedirs[MIBSIZE]; /* MIB command to free a set of directories */ extern int freeblks[MIBSIZE]; /* MIB command to free a set of data blocks */ extern struct fsck_cmd cmd; /* sysctl file system update commands */ extern char snapname[BUFSIZ]; /* when doing snapshots, the name of the file */ extern char *cdevname; /* name of device being checked */ extern long dev_bsize; /* computed value of DEV_BSIZE */ extern long secsize; /* actual disk sector size */ extern u_int real_dev_bsize; /* actual disk sector size, not overridden */ extern char nflag; /* assume a no response */ extern char yflag; /* assume a yes response */ extern int bkgrdflag; /* use a snapshot to run on an active system */ extern ufs2_daddr_t bflag; /* location of alternate super block */ extern int debug; /* output debugging info */ extern int Eflag; /* delete empty data blocks */ extern int Zflag; /* zero empty data blocks */ extern int inoopt; /* trim out unused inodes */ extern char ckclean; /* only do work if not cleanly unmounted */ extern int cvtlevel; /* convert to newer file system format */ extern int bkgrdcheck; /* determine if background check is possible */ extern int bkgrdsumadj; /* whether the kernel have ability to adjust superblock summary */ extern char usedsoftdep; /* just fix soft dependency inconsistencies */ extern char preen; /* just fix normal inconsistencies */ extern char rerun; /* rerun fsck. Only used in non-preen mode */ extern int returntosingle; /* 1 => return to single user mode on exit */ extern char resolved; /* cleared if unresolved changes => not clean */ extern char havesb; /* superblock has been read */ extern char skipclean; /* skip clean file systems if preening */ extern int fsmodified; /* 1 => write done to file system */ extern int fsreadfd; /* file descriptor for reading file system */ extern int fswritefd; /* file descriptor for writing file system */ extern int surrender; /* Give up if reads fail */ extern int wantrestart; /* Restart fsck on early termination */ extern ufs2_daddr_t maxfsblock; /* number of blocks in the file system */ extern char *blockmap; /* ptr to primary blk allocation map */ extern ino_t maxino; /* number of inodes in file system */ extern ino_t lfdir; /* lost & found directory inode number */ extern const char *lfname; /* lost & found directory name */ extern int lfmode; /* lost & found directory creation mode */ extern ufs2_daddr_t n_blks; /* number of blocks in use */ extern ino_t n_files; /* number of files in use */ extern volatile sig_atomic_t got_siginfo; /* received a SIGINFO */ extern volatile sig_atomic_t got_sigalarm; /* received a SIGALRM */ #define clearinode(dp) \ if (sblock.fs_magic == FS_UFS1_MAGIC) { \ (dp)->dp1 = ufs1_zino; \ } else { \ (dp)->dp2 = ufs2_zino; \ } extern struct ufs1_dinode ufs1_zino; extern struct ufs2_dinode ufs2_zino; #define setbmap(blkno) setbit(blockmap, blkno) #define testbmap(blkno) isset(blockmap, blkno) #define clrbmap(blkno) clrbit(blockmap, blkno) #define STOP 0x01 #define SKIP 0x02 #define KEEPON 0x04 #define ALTERED 0x08 #define FOUND 0x10 #define EEXIT 8 /* Standard error exit. */ +#define ERERUN 16 /* fsck needs to be re-run. */ #define ERESTART -1 int flushentry(void); /* * Wrapper for malloc() that flushes the cylinder group cache to try * to get space. */ static inline void* Malloc(size_t size) { void *retval; while ((retval = malloc(size)) == NULL) if (flushentry() == 0) break; return (retval); } /* * Wrapper for calloc() that flushes the cylinder group cache to try * to get space. */ static inline void* Calloc(size_t cnt, size_t size) { void *retval; while ((retval = calloc(cnt, size)) == NULL) if (flushentry() == 0) break; return (retval); } struct fstab; void adjust(struct inodesc *, int lcnt); ufs2_daddr_t allocblk(long frags); ino_t allocdir(ino_t parent, ino_t request, int mode); ino_t allocino(ino_t request, int type); void blkerror(ino_t ino, const char *type, ufs2_daddr_t blk); char *blockcheck(char *name); int blread(int fd, char *buf, ufs2_daddr_t blk, long size); void bufinit(void); void blwrite(int fd, char *buf, ufs2_daddr_t blk, ssize_t size); void blerase(int fd, ufs2_daddr_t blk, long size); void blzero(int fd, ufs2_daddr_t blk, long size); void cacheino(union dinode *dp, ino_t inumber); void catch(int); void catchquit(int); int changeino(ino_t dir, const char *name, ino_t newnum); int check_cgmagic(int cg, struct bufarea *cgbp); int chkrange(ufs2_daddr_t blk, int cnt); void ckfini(int markclean); int ckinode(union dinode *dp, struct inodesc *); void clri(struct inodesc *, const char *type, int flag); int clearentry(struct inodesc *); void direrror(ino_t ino, const char *errmesg); int dirscan(struct inodesc *); int dofix(struct inodesc *, const char *msg); int eascan(struct inodesc *, struct ufs2_dinode *dp); void fileerror(ino_t cwd, ino_t ino, const char *errmesg); void finalIOstats(void); int findino(struct inodesc *); int findname(struct inodesc *); void flush(int fd, struct bufarea *bp); void freeblk(ufs2_daddr_t blkno, long frags); void freeino(ino_t ino); void freeinodebuf(void); void fsutilinit(void); int ftypeok(union dinode *dp); void getblk(struct bufarea *bp, ufs2_daddr_t blk, long size); struct bufarea *cgget(int cg); struct bufarea *getdatablk(ufs2_daddr_t blkno, long size, int type); struct inoinfo *getinoinfo(ino_t inumber); union dinode *getnextinode(ino_t inumber, int rebuildcg); void getpathname(char *namebuf, ino_t curdir, ino_t ino); union dinode *ginode(ino_t inumber); void infohandler(int sig); void alarmhandler(int sig); void inocleanup(void); void inodirty(void); struct inostat *inoinfo(ino_t inum); void IOstats(char *what); int linkup(ino_t orphan, ino_t parentdir, char *name); int makeentry(ino_t parent, ino_t ino, const char *name); void panic(const char *fmt, ...) __printflike(1, 2); void pass1(void); void pass1b(void); int pass1check(struct inodesc *); void pass2(void); void pass3(void); void pass4(void); int pass4check(struct inodesc *); void pass5(void); void pfatal(const char *fmt, ...) __printflike(1, 2); void pinode(ino_t ino); void propagate(void); void pwarn(const char *fmt, ...) __printflike(1, 2); int readsb(int listerr); int reply(const char *question); void rwerror(const char *mesg, ufs2_daddr_t blk); void sblock_init(void); void setinodebuf(ino_t); int setup(char *dev); void gjournal_check(const char *filesys); int suj_check(const char *filesys); void update_maps(struct cg *, struct cg*, int); void fsckinit(void); #endif /* !_FSCK_H_ */ Index: head/sbin/fsck_ffs/fsck_ffs.8 =================================================================== --- head/sbin/fsck_ffs/fsck_ffs.8 (revision 328012) +++ head/sbin/fsck_ffs/fsck_ffs.8 (revision 328013) @@ -1,408 +1,440 @@ .\" .\" Copyright (c) 1980, 1989, 1991, 1993 .\" The Regents of the University of California. All rights reserved. .\" .\" Redistribution and use in source and binary forms, with or without .\" modification, are permitted provided that the following conditions .\" are met: .\" 1. Redistributions of source code must retain the above copyright .\" notice, this list of conditions and the following disclaimer. .\" 2. Redistributions in binary form must reproduce the above copyright .\" notice, this list of conditions and the following disclaimer in the .\" documentation and/or other materials provided with the distribution. .\" 3. Neither the name of the University nor the names of its contributors .\" may be used to endorse or promote products derived from this software .\" without specific prior written permission. .\" .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" .\" @(#)fsck.8 8.4 (Berkeley) 5/9/95 .\" $FreeBSD$ .\" -.Dd February 14, 2017 +.Dd January 13, 2018 .Dt FSCK_FFS 8 .Os .Sh NAME .Nm fsck_ffs , .Nm fsck_ufs .Nd file system consistency check and interactive repair .Sh SYNOPSIS .Nm .Op Fl BCdEFfnpRrSyZ .Op Fl b Ar block .Op Fl c Ar level .Op Fl m Ar mode .Ar filesystem .Ar ... .Sh DESCRIPTION The specified disk partitions and/or file systems are checked. In "preen" or "check clean" mode the clean flag of each file system's superblock is examined and only those file systems that are not marked clean are checked. File systems are marked clean when they are unmounted, when they have been mounted read-only, or when .Nm runs on them successfully. If the .Fl f option is specified, the file systems will be checked regardless of the state of their clean flag. .Pp The kernel takes care that only a restricted class of innocuous file system inconsistencies can happen unless hardware or software failures intervene. These are limited to the following: .Pp .Bl -item -compact -offset indent .It Unreferenced inodes .It Link counts in inodes too large .It Missing blocks in the free map .It Blocks in the free map also in files .It Counts in the super-block wrong .El .Pp These are the only inconsistencies that .Nm with the .Fl p option will correct; if it encounters other inconsistencies, it exits with an abnormal return status and an automatic reboot will then fail. For each corrected inconsistency one or more lines will be printed identifying the file system on which the correction will take place, and the nature of the correction. After successfully correcting a file system, .Nm will print the number of files on that file system, the number of used and free blocks, and the percentage of fragmentation. .Pp If sent a .Dv QUIT signal, .Nm will finish the file system checks, then exit with an abnormal return status that causes an automatic reboot to fail. This is useful when you want to finish the file system checks during an automatic reboot, but do not want the machine to come up multiuser after the checks complete. .Pp If .Nm receives a .Dv SIGINFO (see the .Dq status argument for .Xr stty 1 ) signal, a line will be written to the standard output indicating the name of the device currently being checked, the current phase number and phase-specific progress information. .Pp Without the .Fl p option, .Nm audits and interactively repairs inconsistent conditions for file systems. If the file system is inconsistent the operator is prompted for concurrence before each correction is attempted. It should be noted that some of the corrective actions which are not correctable under the .Fl p option will result in some loss of data. The amount and severity of data lost may be determined from the diagnostic output. The default action for each consistency correction is to wait for the operator to respond .Li yes or .Li no . If the operator does not have write permission on the file system .Nm will default to a .Fl n action. .Pp The following flags are interpreted by .Nm : .Bl -tag -width indent .It Fl B A check is done on the specified and possibly active file system. The set of corrections that can be done is limited to those done when running in preen mode (see the .Fl p flag). If unexpected errors are found, the file system is marked as needing a foreground check and .Nm exits without attempting any further cleaning. .It Fl b Use the block specified immediately after the flag as the super block for the file system. An alternate super block is usually located at block 32 for UFS1, and block 160 for UFS2. .Pp See the .Fl N flag of .Xr newfs 8 . .It Fl C Check if file system was dismounted cleanly. If so, skip file system checks (like "preen"). However, if the file system was not cleanly dismounted, do full checks, as if .Nm was invoked without .Fl C . .It Fl c Convert the file system to the specified level. Note that the level of a file system can only be raised. There are currently four levels defined: .Bl -tag -width indent .It 0 The file system is in the old (static table) format. .It 1 The file system is in the new (dynamic table) format. .It 2 The file system supports 32-bit uid's and gid's, short symbolic links are stored in the inode, and directories have an added field showing the file type. .It 3 If maxcontig is greater than one, build the free segment maps to aid in finding contiguous sets of blocks. If maxcontig is equal to one, delete any existing segment maps. .El .Pp In interactive mode, .Nm will list the conversion to be made and ask whether the conversion should be done. If a negative answer is given, no further operations are done on the file system. In preen mode, the conversion is listed and done if possible without user interaction. Conversion in preen mode is best used when all the file systems are being converted at once. The format of a file system can be determined from the first line of output from .Xr dumpfs 8 . .Pp This option implies the .Fl f flag. .It Fl d Enable debugging messages. .It Fl E Clear unallocated blocks, notifying the underlying device that they are not used and that their contents may be discarded. This is useful for filesystems which have been mounted on systems without TRIM support, or with TRIM support disabled, as well as filesystems which have been copied from one device to another. .Pp See the .Fl E and .Fl t flags of .Xr newfs 8 , and the .Fl t flag of .Xr tunefs 8 . .It Fl F Determine whether the file system needs to be cleaned immediately in foreground, or if its cleaning can be deferred to background. To be eligible for background cleaning it must have been running with soft updates, not have been marked as needing a foreground check, and be mounted and writable when the background check is to be done. If these conditions are met, then .Nm exits with a zero exit status. Otherwise it exits with a non-zero exit status. If the file system is clean, it will exit with a non-zero exit status so that the clean status of the file system can be verified and reported during the foreground checks. Note that when invoked with the .Fl F flag, no cleanups are done. The only thing that .Nm does is to determine whether a foreground or background check is needed and exit with an appropriate status code. .It Fl f Force .Nm to check .Sq clean file systems when preening. .It Fl m Use the mode specified in octal immediately after the flag as the permission bits to use when creating the .Pa lost+found directory rather than the default 1777. In particular, systems that do not wish to have lost files accessible by all users on the system should use a more restrictive set of permissions such as 700. .It Fl n Assume a no response to all questions asked by .Nm except for .Ql CONTINUE? , which is assumed to be affirmative; do not open the file system for writing. .It Fl p Preen file systems (see above). .It Fl R Instruct fsck_ffs to restart itself if it encounters certain errors that warrant another run. It will limit itself to a maximum of 10 restarts in a given run in order to avoid an endless loop with extremely corrupted filesystems. .It Fl r Free up excess unused inodes. Decreasing the number of preallocated inodes reduces the running time of future runs of .Nm and frees up space that can allocated to files. The .Fl r option is ignored when running in preen mode. .It Fl S Surrender on error. With this flag enabled, a hard error returned on disk i/o will cause .Nm to abort instead of continuing on and possibly tripping over more i/o errors. .It Fl y Assume a yes response to all questions asked by .Nm ; this should be used with great caution as this is a free license to continue after essentially unlimited trouble has been encountered. .It Fl Z Similar to .Fl E , but overwrites unused blocks with zeroes. If both .Fl E and .Fl Z are specified, blocks are first zeroed and then erased. .El .Pp Inconsistencies checked are as follows: .Pp .Bl -enum -compact .It Blocks claimed by more than one inode or the free map. .It Blocks claimed by an inode outside the range of the file system. .It Incorrect link counts. .It Size checks: .Bl -item -offset indent -compact .It Directory size not a multiple of DIRBLKSIZ. .It Partially truncated file. .El .It Bad inode format. .It Blocks not accounted for anywhere. .It Directory checks: .Bl -item -offset indent -compact .It File pointing to unallocated inode. .It Inode number out of range. .It Directories with unallocated blocks (holes). .It Dot or dot-dot not the first two entries of a directory or having the wrong inode number. .El .It Super Block checks: .Bl -item -offset indent -compact .It More blocks for inodes than there are in the file system. .It Bad free block map format. .It Total free block and/or free inode count incorrect. .El .El .Pp Orphaned files and directories (allocated but unreferenced) are, with the operator's concurrence, reconnected by placing them in the .Pa lost+found directory. The name assigned is the inode number. If the .Pa lost+found directory does not exist, it is created. If there is insufficient space its size is increased. .Pp The full foreground .Nm checks for many more problems that may occur after an unrecoverable disk write error. Thus, it is recommended that you perform foreground .Nm on your systems periodically and whenever you encounter unrecoverable disk write errors or file-system\-related panics. .Sh FILES .Bl -tag -width /etc/fstab -compact .It Pa /etc/fstab contains default list of file systems to check. .El .Sh EXIT STATUS .Ex -std .Pp -If the option +Specific non-zero exit status values used are: +.Bl -tag -width indent +.It 1 +Usage error (missing or invalid command arguments). +.It 2 +The +.Fl p +option was used and a +.Dv SIGQUIT +was received, indicating that the system should be returned to single +user mode after the file system check. +.It 3 +The file system superblock cannot be read. +This could indicate that the file system device does not exist or is not yet +ready. +.It 4 +A mounted file system was modified; the system should be rebooted. +.It 5 +The +.Fl B +option was used and soft updates are not enabled on the file system. +.It 6 +The +.Fl B +option was used and the kernel lacks needed support. +.It 7 +The .Fl F -is used, +option was used and the file system is clean. +.It 8 +General error exit. +.It 16 +The file system could not be completely repaired. +The file system may be able to be repaired by running .Nm -exits 7 if the file system is clean. +on the file system again. +.El .Sh DIAGNOSTICS The diagnostics produced by .Nm are fully enumerated and explained in Appendix A of .Rs .%T "Fsck \- The UNIX File System Check Program" .Re .Sh SEE ALSO .Xr fs 5 , .Xr fstab 5 , .Xr fsck 8 , .Xr fsdb 8 , .Xr newfs 8 , .Xr reboot 8 .Sh HISTORY A .Nm fsck utility appeared in .Bx 4.0 . It became .Nm in .Fx 5.0 with the introduction of the filesystem independent wrapper as .Nm fsck . Index: head/sbin/fsck_ffs/main.c =================================================================== --- head/sbin/fsck_ffs/main.c (revision 328012) +++ head/sbin/fsck_ffs/main.c (revision 328013) @@ -1,696 +1,698 @@ /*- * SPDX-License-Identifier: BSD-3-Clause * * Copyright (c) 1980, 1986, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #if 0 #ifndef lint static const char copyright[] = "@(#) Copyright (c) 1980, 1986, 1993\n\ The Regents of the University of California. All rights reserved.\n"; #endif /* not lint */ #ifndef lint static char sccsid[] = "@(#)main.c 8.6 (Berkeley) 5/14/95"; #endif /* not lint */ #endif #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "fsck.h" int restarts; static void usage(void) __dead2; static intmax_t argtoimax(int flag, const char *req, const char *str, int base); static int checkfilesys(char *filesys); static int chkdoreload(struct statfs *mntp); static struct statfs *getmntpt(const char *); int main(int argc, char *argv[]) { int ch; struct rlimit rlimit; struct itimerval itimerval; + int fsret; int ret = 0; sync(); skipclean = 1; inoopt = 0; while ((ch = getopt(argc, argv, "b:Bc:CdEfFm:npRrSyZ")) != -1) { switch (ch) { case 'b': skipclean = 0; bflag = argtoimax('b', "number", optarg, 10); printf("Alternate super block location: %jd\n", bflag); break; case 'B': bkgrdflag = 1; break; case 'c': skipclean = 0; cvtlevel = argtoimax('c', "conversion level", optarg, 10); if (cvtlevel < 3) errx(EEXIT, "cannot do level %d conversion", cvtlevel); break; case 'd': debug++; break; case 'E': Eflag++; break; case 'f': skipclean = 0; break; case 'F': bkgrdcheck = 1; break; case 'm': lfmode = argtoimax('m', "mode", optarg, 8); if (lfmode &~ 07777) errx(EEXIT, "bad mode to -m: %o", lfmode); printf("** lost+found creation mode %o\n", lfmode); break; case 'n': nflag++; yflag = 0; break; case 'p': preen++; /*FALLTHROUGH*/ case 'C': ckclean++; break; case 'R': wantrestart = 1; break; case 'r': inoopt++; break; case 'S': surrender = 1; break; case 'y': yflag++; nflag = 0; break; case 'Z': Zflag++; break; default: usage(); } } argc -= optind; argv += optind; if (!argc) usage(); if (signal(SIGINT, SIG_IGN) != SIG_IGN) (void)signal(SIGINT, catch); if (ckclean) (void)signal(SIGQUIT, catchquit); signal(SIGINFO, infohandler); if (bkgrdflag) { signal(SIGALRM, alarmhandler); itimerval.it_interval.tv_sec = 5; itimerval.it_interval.tv_usec = 0; itimerval.it_value.tv_sec = 5; itimerval.it_value.tv_usec = 0; setitimer(ITIMER_REAL, &itimerval, NULL); } /* * Push up our allowed memory limit so we can cope * with huge file systems. */ if (getrlimit(RLIMIT_DATA, &rlimit) == 0) { rlimit.rlim_cur = rlimit.rlim_max; (void)setrlimit(RLIMIT_DATA, &rlimit); } while (argc > 0) { - if (checkfilesys(*argv) == ERESTART) + if ((fsret = checkfilesys(*argv)) == ERESTART) continue; + ret |= fsret; argc--; argv++; } if (returntosingle) ret = 2; exit(ret); } static intmax_t argtoimax(int flag, const char *req, const char *str, int base) { char *cp; intmax_t ret; ret = strtoimax(str, &cp, base); if (cp == str || *cp) errx(EEXIT, "-%c flag requires a %s", flag, req); return (ret); } /* * Check the specified file system. */ /* ARGSUSED */ static int checkfilesys(char *filesys) { ufs2_daddr_t n_ffree, n_bfree; struct dups *dp; struct statfs *mntp; struct stat snapdir; struct group *grp; struct iovec *iov; char errmsg[255]; int ofsmodified; int iovlen; int cylno; intmax_t blks, files; size_t size; iov = NULL; iovlen = 0; errmsg[0] = '\0'; fsutilinit(); fsckinit(); cdevname = filesys; if (debug && ckclean) pwarn("starting\n"); /* * Make best effort to get the disk name. Check first to see * if it is listed among the mounted file systems. Failing that * check to see if it is listed in /etc/fstab. */ mntp = getmntpt(filesys); if (mntp != NULL) filesys = mntp->f_mntfromname; else filesys = blockcheck(filesys); /* * If -F flag specified, check to see whether a background check * is possible and needed. If possible and needed, exit with * status zero. Otherwise exit with status non-zero. A non-zero * exit status will cause a foreground check to be run. */ sblock_init(); if (bkgrdcheck) { if ((fsreadfd = open(filesys, O_RDONLY)) < 0 || readsb(0) == 0) exit(3); /* Cannot read superblock */ close(fsreadfd); /* Earlier background failed or journaled */ if (sblock.fs_flags & (FS_NEEDSFSCK | FS_SUJ)) exit(4); if ((sblock.fs_flags & FS_DOSOFTDEP) == 0) exit(5); /* Not running soft updates */ size = MIBSIZE; if (sysctlnametomib("vfs.ffs.adjrefcnt", adjrefcnt, &size) < 0) exit(6); /* Lacks kernel support */ if ((mntp == NULL && sblock.fs_clean == 1) || (mntp != NULL && (sblock.fs_flags & FS_UNCLEAN) == 0)) exit(7); /* Filesystem clean, report it now */ exit(0); } if (ckclean && skipclean) { /* * If file system is gjournaled, check it here. */ if ((fsreadfd = open(filesys, O_RDONLY)) < 0 || readsb(0) == 0) exit(3); /* Cannot read superblock */ close(fsreadfd); if ((sblock.fs_flags & FS_GJOURNAL) != 0) { //printf("GJournaled file system detected on %s.\n", // filesys); if (sblock.fs_clean == 1) { pwarn("FILE SYSTEM CLEAN; SKIPPING CHECKS\n"); exit(0); } if ((sblock.fs_flags & (FS_UNCLEAN | FS_NEEDSFSCK)) == 0) { gjournal_check(filesys); if (chkdoreload(mntp) == 0) exit(0); exit(4); } else { pfatal( "UNEXPECTED INCONSISTENCY, CANNOT RUN FAST FSCK\n"); } } } /* * If we are to do a background check: * Get the mount point information of the file system * create snapshot file * return created snapshot file * if not found, clear bkgrdflag and proceed with normal fsck */ if (bkgrdflag) { if (mntp == NULL) { bkgrdflag = 0; pfatal("NOT MOUNTED, CANNOT RUN IN BACKGROUND\n"); } else if ((mntp->f_flags & MNT_SOFTDEP) == 0) { bkgrdflag = 0; pfatal( "NOT USING SOFT UPDATES, CANNOT RUN IN BACKGROUND\n"); } else if ((mntp->f_flags & MNT_RDONLY) != 0) { bkgrdflag = 0; pfatal("MOUNTED READ-ONLY, CANNOT RUN IN BACKGROUND\n"); } else if ((fsreadfd = open(filesys, O_RDONLY)) >= 0) { if (readsb(0) != 0) { if (sblock.fs_flags & (FS_NEEDSFSCK | FS_SUJ)) { bkgrdflag = 0; pfatal( "UNEXPECTED INCONSISTENCY, CANNOT RUN IN BACKGROUND\n"); } if ((sblock.fs_flags & FS_UNCLEAN) == 0 && skipclean && ckclean) { /* * file system is clean; * skip snapshot and report it clean */ pwarn( "FILE SYSTEM CLEAN; SKIPPING CHECKS\n"); goto clean; } } close(fsreadfd); } if (bkgrdflag) { snprintf(snapname, sizeof snapname, "%s/.snap", mntp->f_mntonname); if (stat(snapname, &snapdir) < 0) { if (errno != ENOENT) { bkgrdflag = 0; pfatal( "CANNOT FIND SNAPSHOT DIRECTORY %s: %s, CANNOT RUN IN BACKGROUND\n", snapname, strerror(errno)); } else if ((grp = getgrnam("operator")) == NULL || mkdir(snapname, 0770) < 0 || chown(snapname, -1, grp->gr_gid) < 0 || chmod(snapname, 0770) < 0) { bkgrdflag = 0; pfatal( "CANNOT CREATE SNAPSHOT DIRECTORY %s: %s, CANNOT RUN IN BACKGROUND\n", snapname, strerror(errno)); } } else if (!S_ISDIR(snapdir.st_mode)) { bkgrdflag = 0; pfatal( "%s IS NOT A DIRECTORY, CANNOT RUN IN BACKGROUND\n", snapname); } } if (bkgrdflag) { snprintf(snapname, sizeof snapname, "%s/.snap/fsck_snapshot", mntp->f_mntonname); build_iovec(&iov, &iovlen, "fstype", "ffs", 4); build_iovec(&iov, &iovlen, "from", snapname, (size_t)-1); build_iovec(&iov, &iovlen, "fspath", mntp->f_mntonname, (size_t)-1); build_iovec(&iov, &iovlen, "errmsg", errmsg, sizeof(errmsg)); build_iovec(&iov, &iovlen, "update", NULL, 0); build_iovec(&iov, &iovlen, "snapshot", NULL, 0); while (nmount(iov, iovlen, mntp->f_flags) < 0) { if (errno == EEXIST && unlink(snapname) == 0) continue; bkgrdflag = 0; pfatal("CANNOT CREATE SNAPSHOT %s: %s %s\n", snapname, strerror(errno), errmsg); break; } if (bkgrdflag != 0) filesys = snapname; } } switch (setup(filesys)) { case 0: if (preen) pfatal("CAN'T CHECK FILE SYSTEM."); return (0); case -1: clean: pwarn("clean, %ld free ", (long)(sblock.fs_cstotal.cs_nffree + sblock.fs_frag * sblock.fs_cstotal.cs_nbfree)); printf("(%jd frags, %jd blocks, %.1f%% fragmentation)\n", (intmax_t)sblock.fs_cstotal.cs_nffree, (intmax_t)sblock.fs_cstotal.cs_nbfree, sblock.fs_cstotal.cs_nffree * 100.0 / sblock.fs_dsize); return (0); } /* * Determine if we can and should do journal recovery. */ if ((sblock.fs_flags & FS_SUJ) == FS_SUJ) { if ((sblock.fs_flags & FS_NEEDSFSCK) != FS_NEEDSFSCK && skipclean) { if (preen || reply("USE JOURNAL")) { if (suj_check(filesys) == 0) { printf("\n***** FILE SYSTEM MARKED CLEAN *****\n"); if (chkdoreload(mntp) == 0) exit(0); exit(4); } } printf("** Skipping journal, falling through to full fsck\n\n"); } /* * Write the superblock so we don't try to recover the * journal on another pass. If this is the only change * to the filesystem, we do not want it to be called * out as modified. */ sblock.fs_mtime = time(NULL); sbdirty(); ofsmodified = fsmodified; flush(fswritefd, &sblk); fsmodified = ofsmodified; } /* * Cleared if any questions answered no. Used to decide if * the superblock should be marked clean. */ resolved = 1; /* * 1: scan inodes tallying blocks used */ if (preen == 0) { printf("** Last Mounted on %s\n", sblock.fs_fsmnt); if (mntp != NULL && mntp->f_flags & MNT_ROOTFS) printf("** Root file system\n"); printf("** Phase 1 - Check Blocks and Sizes\n"); } clock_gettime(CLOCK_REALTIME_PRECISE, &startprog); pass1(); IOstats("Pass1"); /* * 1b: locate first references to duplicates, if any */ if (duplist) { if (preen || usedsoftdep) pfatal("INTERNAL ERROR: dups with %s%s%s", preen ? "-p" : "", (preen && usedsoftdep) ? " and " : "", usedsoftdep ? "softupdates" : ""); printf("** Phase 1b - Rescan For More DUPS\n"); pass1b(); IOstats("Pass1b"); } /* * 2: traverse directories from root to mark all connected directories */ if (preen == 0) printf("** Phase 2 - Check Pathnames\n"); pass2(); IOstats("Pass2"); /* * 3: scan inodes looking for disconnected directories */ if (preen == 0) printf("** Phase 3 - Check Connectivity\n"); pass3(); IOstats("Pass3"); /* * 4: scan inodes looking for disconnected files; check reference counts */ if (preen == 0) printf("** Phase 4 - Check Reference Counts\n"); pass4(); IOstats("Pass4"); /* * 5: check and repair resource counts in cylinder groups */ if (preen == 0) printf("** Phase 5 - Check Cyl groups\n"); pass5(); IOstats("Pass5"); /* * print out summary statistics */ n_ffree = sblock.fs_cstotal.cs_nffree; n_bfree = sblock.fs_cstotal.cs_nbfree; files = maxino - UFS_ROOTINO - sblock.fs_cstotal.cs_nifree - n_files; blks = n_blks + sblock.fs_ncg * (cgdmin(&sblock, 0) - cgsblock(&sblock, 0)); blks += cgsblock(&sblock, 0) - cgbase(&sblock, 0); blks += howmany(sblock.fs_cssize, sblock.fs_fsize); blks = maxfsblock - (n_ffree + sblock.fs_frag * n_bfree) - blks; if (bkgrdflag && (files > 0 || blks > 0)) { countdirs = sblock.fs_cstotal.cs_ndir - countdirs; pwarn("Reclaimed: %ld directories, %jd files, %jd fragments\n", countdirs, files - countdirs, blks); } pwarn("%ld files, %jd used, %ju free ", (long)n_files, (intmax_t)n_blks, (uintmax_t)n_ffree + sblock.fs_frag * n_bfree); printf("(%ju frags, %ju blocks, %.1f%% fragmentation)\n", (uintmax_t)n_ffree, (uintmax_t)n_bfree, n_ffree * 100.0 / sblock.fs_dsize); if (debug) { if (files < 0) printf("%jd inodes missing\n", -files); if (blks < 0) printf("%jd blocks missing\n", -blks); if (duplist != NULL) { printf("The following duplicate blocks remain:"); for (dp = duplist; dp; dp = dp->next) printf(" %jd,", (intmax_t)dp->dup); printf("\n"); } } duplist = (struct dups *)0; muldup = (struct dups *)0; inocleanup(); if (fsmodified) { sblock.fs_time = time(NULL); sbdirty(); } if (cvtlevel && sblk.b_dirty) { /* * Write out the duplicate super blocks */ for (cylno = 0; cylno < sblock.fs_ncg; cylno++) blwrite(fswritefd, (char *)&sblock, fsbtodb(&sblock, cgsblock(&sblock, cylno)), SBLOCKSIZE); } if (rerun) resolved = 0; finalIOstats(); /* * Check to see if the file system is mounted read-write. */ if (bkgrdflag == 0 && mntp != NULL && (mntp->f_flags & MNT_RDONLY) == 0) resolved = 0; ckfini(resolved); for (cylno = 0; cylno < sblock.fs_ncg; cylno++) if (inostathead[cylno].il_stat != NULL) free((char *)inostathead[cylno].il_stat); free((char *)inostathead); inostathead = NULL; if (fsmodified && !preen) printf("\n***** FILE SYSTEM WAS MODIFIED *****\n"); if (rerun) { if (wantrestart && (restarts++ < 10) && (preen || reply("RESTART"))) return (ERESTART); printf("\n***** PLEASE RERUN FSCK *****\n"); } if (chkdoreload(mntp) != 0) { if (!fsmodified) return (0); if (!preen) printf("\n***** REBOOT NOW *****\n"); sync(); return (4); } - return (0); + return (rerun ? ERERUN : 0); } static int chkdoreload(struct statfs *mntp) { struct iovec *iov; int iovlen; char errmsg[255]; if (mntp == NULL) return (0); iov = NULL; iovlen = 0; errmsg[0] = '\0'; /* * We modified a mounted file system. Do a mount update on * it unless it is read-write, so we can continue using it * as safely as possible. */ if (mntp->f_flags & MNT_RDONLY) { build_iovec(&iov, &iovlen, "fstype", "ffs", 4); build_iovec(&iov, &iovlen, "from", mntp->f_mntfromname, (size_t)-1); build_iovec(&iov, &iovlen, "fspath", mntp->f_mntonname, (size_t)-1); build_iovec(&iov, &iovlen, "errmsg", errmsg, sizeof(errmsg)); build_iovec(&iov, &iovlen, "update", NULL, 0); build_iovec(&iov, &iovlen, "reload", NULL, 0); /* * XX: We need the following line until we clean up * nmount parsing of root mounts and NFS root mounts. */ build_iovec(&iov, &iovlen, "ro", NULL, 0); if (nmount(iov, iovlen, mntp->f_flags) == 0) { return (0); } pwarn("mount reload of '%s' failed: %s %s\n\n", mntp->f_mntonname, strerror(errno), errmsg); return (1); } return (0); } /* * Get the mount point information for name. */ static struct statfs * getmntpt(const char *name) { struct stat devstat, mntdevstat; char device[sizeof(_PATH_DEV) - 1 + MNAMELEN]; char *ddevname; struct statfs *mntbuf, *statfsp; int i, mntsize, isdev; if (stat(name, &devstat) != 0) return (NULL); if (S_ISCHR(devstat.st_mode) || S_ISBLK(devstat.st_mode)) isdev = 1; else isdev = 0; mntsize = getmntinfo(&mntbuf, MNT_NOWAIT); for (i = 0; i < mntsize; i++) { statfsp = &mntbuf[i]; ddevname = statfsp->f_mntfromname; if (*ddevname != '/') { if (strlen(_PATH_DEV) + strlen(ddevname) + 1 > sizeof(statfsp->f_mntfromname)) continue; strcpy(device, _PATH_DEV); strcat(device, ddevname); strcpy(statfsp->f_mntfromname, device); } if (isdev == 0) { if (strcmp(name, statfsp->f_mntonname)) continue; return (statfsp); } if (stat(ddevname, &mntdevstat) == 0 && mntdevstat.st_rdev == devstat.st_rdev) return (statfsp); } statfsp = NULL; return (statfsp); } static void usage(void) { (void) fprintf(stderr, "usage: %s [-BCdEFfnpRrSyZ] [-b block] [-c level] [-m mode] filesystem ...\n", getprogname()); exit(1); } void infohandler(int sig __unused) { got_siginfo = 1; } void alarmhandler(int sig __unused) { got_sigalarm = 1; }