368 lines
9.0 KiB
C
368 lines
9.0 KiB
C
/* $NetBSD: preen.c,v 1.31 2012/04/07 04:52:20 christos Exp $ */
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/*
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* Copyright (c) 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)preen.c 8.5 (Berkeley) 4/28/95";
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#else
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__RCSID("$NetBSD: preen.c,v 1.31 2012/04/07 04:52:20 christos Exp $");
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#endif
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <sys/wait.h>
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#include <sys/queue.h>
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#include <sys/disk.h>
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#include <sys/ioctl.h>
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#include <err.h>
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#include <ctype.h>
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#include <fstab.h>
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#include <fcntl.h>
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#include <string.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <util.h>
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#include "fsutil.h"
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#include "exitvalues.h"
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struct partentry {
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TAILQ_ENTRY(partentry) p_entries;
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char *p_devname; /* device name */
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char *p_mntpt; /* mount point */
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char *p_type; /* file system type */
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void *p_auxarg; /* auxiliary argument */
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};
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TAILQ_HEAD(part, partentry) badh;
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struct diskentry {
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TAILQ_ENTRY(diskentry) d_entries;
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char *d_name; /* disk base name */
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TAILQ_HEAD(prt, partentry) d_part; /* list of partitions on disk */
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int d_pid; /* 0 or pid of fsck proc */
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};
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TAILQ_HEAD(diskinfo, diskentry) diskh;
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static int nrun = 0, ndisks = 0;
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static struct diskentry *finddisk(const char *);
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static void addpart(const char *, const char *, const char *, void *);
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static int startdisk(struct diskentry *,
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int (*)(const char *, const char *, const char *, void *, pid_t *));
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static void printpart(void);
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int
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checkfstab(int flags, int maxrun, void *(*docheck)(struct fstab *),
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int (*checkit)(const char *, const char *, const char *, void *, pid_t *))
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{
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struct fstab *fs;
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struct diskentry *d, *nextdisk;
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struct partentry *p;
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int ret, pid, retcode, passno, sumstatus, status;
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void *auxarg;
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const char *name;
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int error = FSCK_EXIT_OK;
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TAILQ_INIT(&badh);
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TAILQ_INIT(&diskh);
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sumstatus = FSCK_EXIT_OK;
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for (passno = 1; passno <= 2; passno++) {
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if (setfsent() == 0) {
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warnx("Can't open checklist file: %s", _PATH_FSTAB);
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return FSCK_EXIT_CHECK_FAILED;
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}
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while ((fs = getfsent()) != 0) {
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char buf[MAXPATHLEN];
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const char *fsspec;
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if ((auxarg = (*docheck)(fs)) == NULL)
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continue;
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fsspec = getfsspecname(buf, sizeof(buf), fs->fs_spec);
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if (fsspec == NULL) {
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warn("%s", buf);
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return FSCK_EXIT_CHECK_FAILED;
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}
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name = blockcheck(fsspec);
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if (flags & CHECK_DEBUG)
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printf("pass %d, name %s\n", passno, name);
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if ((flags & CHECK_PREEN) == 0 ||
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(passno == 1 && fs->fs_passno == 1)) {
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if (name == NULL) {
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if (flags & CHECK_PREEN)
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return FSCK_EXIT_CHECK_FAILED;
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else
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continue;
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}
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sumstatus = (*checkit)(fs->fs_vfstype,
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name, fs->fs_file, auxarg, NULL);
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if (sumstatus) {
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if ((flags & CHECK_NOFIX) == 0)
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return sumstatus;
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else if (error < sumstatus)
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error = sumstatus;
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}
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} else if (passno == 2 && fs->fs_passno > 1) {
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if (name == NULL) {
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(void) fprintf(stderr,
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"BAD DISK NAME %s\n", fsspec);
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sumstatus = FSCK_EXIT_CHECK_FAILED;
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continue;
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}
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addpart(fs->fs_vfstype, name, fs->fs_file,
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auxarg);
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}
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}
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if ((flags & CHECK_PREEN) == 0)
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return error;
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}
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if (flags & CHECK_DEBUG)
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printpart();
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if (flags & CHECK_PREEN) {
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if (maxrun == 0)
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maxrun = ndisks;
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if (maxrun > ndisks)
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maxrun = ndisks;
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nextdisk = TAILQ_FIRST(&diskh);
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for (passno = 0; passno < maxrun; ++passno) {
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if ((ret = startdisk(nextdisk, checkit)) != 0) {
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if ((flags & CHECK_NOFIX) == 0)
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return ret;
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else if (error < ret)
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error = ret;
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}
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nextdisk = TAILQ_NEXT(nextdisk, d_entries);
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}
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while ((pid = wait(&status)) != -1) {
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TAILQ_FOREACH(d, &diskh, d_entries)
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if (d->d_pid == pid)
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break;
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if (d == NULL) {
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warnx("Unknown pid %d", pid);
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continue;
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}
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if (WIFEXITED(status))
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retcode = WEXITSTATUS(status);
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else
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retcode = 0;
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p = TAILQ_FIRST(&d->d_part);
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if (flags & (CHECK_DEBUG|CHECK_VERBOSE))
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(void) printf("done %s: %s (%s) = 0x%x\n",
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p->p_type, p->p_devname, p->p_mntpt,
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status);
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if (WIFSIGNALED(status)) {
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(void) fprintf(stderr,
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"%s: %s (%s): EXITED WITH SIGNAL %d\n",
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p->p_type, p->p_devname, p->p_mntpt,
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WTERMSIG(status));
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retcode = FSCK_EXIT_SIGNALLED;
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}
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TAILQ_REMOVE(&d->d_part, p, p_entries);
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if (retcode != 0) {
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TAILQ_INSERT_TAIL(&badh, p, p_entries);
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sumstatus |= retcode;
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} else {
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free(p->p_type);
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free(p->p_devname);
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free(p);
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}
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d->d_pid = 0;
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nrun--;
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if (TAILQ_FIRST(&d->d_part) == NULL)
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ndisks--;
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if (nextdisk == NULL) {
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if (TAILQ_FIRST(&d->d_part) != NULL) {
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if ((ret = startdisk(d, checkit)) != 0)
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{
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if ((flags & CHECK_NOFIX) == 0)
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return ret;
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else if (error < ret)
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error = ret;
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}
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}
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} else if (nrun < maxrun && nrun < ndisks) {
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for ( ;; ) {
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nextdisk = TAILQ_NEXT(nextdisk,
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d_entries);
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if (nextdisk == NULL)
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nextdisk = TAILQ_FIRST(&diskh);
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if (TAILQ_FIRST(&nextdisk->d_part)
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!= NULL && nextdisk->d_pid == 0)
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break;
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}
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if ((ret = startdisk(nextdisk, checkit)) != 0)
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{
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if ((flags & CHECK_NOFIX) == 0)
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return ret;
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else if (error < ret)
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error = ret;
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}
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}
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}
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}
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if (sumstatus) {
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p = TAILQ_FIRST(&badh);
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if (p == NULL)
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return sumstatus;
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(void) fprintf(stderr,
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"THE FOLLOWING FILE SYSTEM%s HAD AN %s\n\t",
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TAILQ_NEXT(p, p_entries) ? "S" : "",
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"UNEXPECTED INCONSISTENCY:");
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TAILQ_FOREACH(p, &badh, p_entries)
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(void) fprintf(stderr,
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"%s: %s (%s)%s", p->p_type, p->p_devname,
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p->p_mntpt, TAILQ_NEXT(p, p_entries) ? ", " : "\n");
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return sumstatus;
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}
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(void) endfsent();
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return error;
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}
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static struct diskentry *
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finddisk(const char *name)
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{
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const char *p;
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size_t len, dlen;
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struct diskentry *d;
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char buf[MAXPATHLEN];
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struct dkwedge_info dkw;
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int fd;
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if ((fd = opendisk(name, O_RDONLY, buf, sizeof(buf), 0)) != -1) {
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if (ioctl(fd, DIOCGWEDGEINFO, &dkw) != -1)
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name = dkw.dkw_parent;
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(void)close(fd);
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}
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for (dlen = len = strlen(name), p = name + len - 1; p >= name; --p)
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if (isdigit((unsigned char)*p)) {
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len = p - name + 1;
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break;
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}
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if (p < name)
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len = dlen;
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TAILQ_FOREACH(d, &diskh, d_entries)
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if (strncmp(d->d_name, name, len) == 0 && d->d_name[len] == 0)
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return d;
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d = emalloc(sizeof(*d));
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d->d_name = estrdup(name);
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d->d_name[len] = '\0';
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TAILQ_INIT(&d->d_part);
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d->d_pid = 0;
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TAILQ_INSERT_TAIL(&diskh, d, d_entries);
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ndisks++;
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return d;
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}
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static void
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printpart(void)
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{
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struct diskentry *d;
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struct partentry *p;
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TAILQ_FOREACH(d, &diskh, d_entries) {
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(void) printf("disk %s:", d->d_name);
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TAILQ_FOREACH(p, &d->d_part, p_entries)
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(void) printf(" %s", p->p_devname);
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(void) printf("\n");
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}
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}
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static void
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addpart(const char *type, const char *dev, const char *mntpt, void *auxarg)
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{
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struct diskentry *d = finddisk(dev);
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struct partentry *p;
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TAILQ_FOREACH(p, &d->d_part, p_entries)
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if (strcmp(p->p_devname, dev) == 0) {
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warnx("%s in fstab more than once!", dev);
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return;
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}
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p = emalloc(sizeof(*p));
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p->p_devname = estrdup(dev);
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p->p_mntpt = estrdup(mntpt);
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p->p_type = estrdup(type);
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p->p_auxarg = auxarg;
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TAILQ_INSERT_TAIL(&d->d_part, p, p_entries);
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}
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static int
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startdisk(struct diskentry *d,
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int (*checkit)(const char *, const char *, const char *, void *, pid_t *))
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{
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struct partentry *p = TAILQ_FIRST(&d->d_part);
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int rv;
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while ((rv = (*checkit)(p->p_type, p->p_devname, p->p_mntpt,
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p->p_auxarg, &d->d_pid)) != 0 && nrun > 0)
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sleep(10);
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if (rv == 0)
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nrun++;
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return rv;
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}
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