/* $NetBSD: fsutil.c,v 1.7 1998/07/30 17:41:03 thorpej Exp $ */ /* * Copyright (c) 1990, 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. * * $FreeBSD: src/sbin/fsck/fsutil.c,v 1.2.2.1 2001/08/01 05:47:55 obrien Exp $ */ #include #include #include #include #include #include #include #include #include #include #include #include "fsutil.h" static const char *dev = NULL; static int hot = 0; static int preen = 0; extern char *__progname; static void vmsg(int, const char *, va_list) __printflike(2, 0); void setcdevname(const char *cd, int pr) { dev = cd; preen = pr; } const char * cdevname(void) { return dev; } int hotroot(void) { return hot; } /*VARARGS*/ void errexit(const char *fmt, ...) { va_list ap; va_start(ap, fmt); vfprintf(stderr, fmt, ap); va_end(ap); exit(8); } static void vmsg(int fatal, const char *fmt, va_list ap) { if (!fatal && preen) printf("%s: ", dev); vprintf(fmt, ap); if (fatal && preen) printf("\n"); if (fatal && preen) { printf( "%s: UNEXPECTED INCONSISTENCY; RUN %s MANUALLY.\n", dev, __progname); exit(8); } } /*VARARGS*/ void pfatal(const char *fmt, ...) { va_list ap; va_start(ap, fmt); vmsg(1, fmt, ap); va_end(ap); } /*VARARGS*/ void pwarn(const char *fmt, ...) { va_list ap; va_start(ap, fmt); vmsg(0, fmt, ap); va_end(ap); } void perr(const char *fmt, ...) { va_list ap; va_start(ap, fmt); vmsg(1, fmt, ap); va_end(ap); } void perror(const char *s) { pfatal("%s (%s)", s, strerror(errno)); } void panic(const char *fmt, ...) { va_list ap; va_start(ap, fmt); vmsg(1, fmt, ap); va_end(ap); exit(8); } const char * unrawname(const char *name) { static char unrawbuf[32]; const char *dp; struct stat stb; if ((dp = strrchr(name, '/')) == NULL) return (name); if (stat(name, &stb) < 0) return (name); if (!S_ISCHR(stb.st_mode)) return (name); if (dp[1] != 'r') return (name); snprintf(unrawbuf, 32, "%.*s/%s", (int)(dp - name), name, dp + 2); return (unrawbuf); } const char * rawname(const char *name) { static char rawbuf[32]; const char *dp; if ((dp = strrchr(name, '/')) == NULL) return (0); snprintf(rawbuf, 32, "%.*s/r%s", (int)(dp - name), name, dp + 1); return (rawbuf); } const char * devcheck(const char *origname) { struct stat stslash, stchar; if (stat("/", &stslash) < 0) { perror("/"); printf("Can't stat root\n"); return (origname); } if (stat(origname, &stchar) < 0) { perror(origname); printf("Can't stat %s\n", origname); return (origname); } if (!S_ISCHR(stchar.st_mode)) { perror(origname); printf("%s is not a char device\n", origname); } return (origname); } /* * Get the mount point information for name. */ struct statfs * getmntpt(const char *name) { struct stat devstat, mntdevstat; char device[sizeof(_PATH_DEV) - 1 + MNAMELEN]; char *devname; 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]; devname = statfsp->f_mntfromname; if (*devname != '/') { strcpy(device, _PATH_DEV); strcat(device, devname); strcpy(statfsp->f_mntfromname, device); } if (isdev == 0) { if (strcmp(name, statfsp->f_mntonname)) continue; return (statfsp); } if (stat(devname, &mntdevstat) == 0 && mntdevstat.st_rdev == devstat.st_rdev) return (statfsp); } statfsp = NULL; return (statfsp); } #if 0 /* * XXX this code is from NetBSD, but fails in FreeBSD because we * don't have blockdevs. I don't think its needed. */ const char * blockcheck(const char *origname) { struct stat stslash, stblock, stchar; const char *newname, *raw; struct fstab *fsp; int retried = 0; hot = 0; if (stat("/", &stslash) < 0) { perror("/"); printf("Can't stat root\n"); return (origname); } newname = origname; retry: if (stat(newname, &stblock) < 0) { perror(newname); printf("Can't stat %s\n", newname); return (origname); } if (S_ISBLK(stblock.st_mode)) { if (stslash.st_dev == stblock.st_rdev) hot++; raw = rawname(newname); if (stat(raw, &stchar) < 0) { perror(raw); printf("Can't stat %s\n", raw); return (origname); } if (S_ISCHR(stchar.st_mode)) { return (raw); } else { printf("%s is not a character device\n", raw); return (origname); } } else if (S_ISCHR(stblock.st_mode) && !retried) { newname = unrawname(newname); retried++; goto retry; } else if ((fsp = getfsfile(newname)) != 0 && !retried) { newname = fsp->fs_spec; retried++; goto retry; } /* * Not a block or character device, just return name and * let the user decide whether to use it. */ return (origname); } #endif