/* $NetBSD: newfs.c,v 1.16 2005/04/12 01:06:39 perseant Exp $ */ /*- * Copyright (c) 1989, 1992, 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. */ #include #ifndef lint __COPYRIGHT("@(#) Copyright (c) 1989, 1992, 1993\n\ The Regents of the University of California. All rights reserved.\n"); #endif /* not lint */ #ifndef lint #if 0 static char sccsid[] = "@(#)newfs.c 8.5 (Berkeley) 5/24/95"; #else __RCSID("$NetBSD: newfs.c,v 1.16 2005/04/12 01:06:39 perseant Exp $"); #endif #endif /* not lint */ /* * newfs: friendly front end to mkfs */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "config.h" #include "extern.h" #include "bufcache.h" #define COMPAT /* allow non-labeled disks */ int Nflag = 0; /* run without writing file system */ int fssize; /* file system size */ int sectorsize; /* bytes/sector */ int fsize = 0; /* fragment size */ int bsize = 0; /* block size */ int ibsize = 0; /* inode block size */ int interleave = 0; /* segment interleave */ int minfree = MINFREE; /* free space threshold */ int minfreeseg = 0; /* free segments reserved for the cleaner */ u_int32_t roll_id = 0; /* roll-forward id */ u_long memleft; /* virtual memory available */ caddr_t membase; /* start address of memory based filesystem */ #ifdef COMPAT char *disktype; int unlabeled; #endif int preen = 0; /* Coexistence with fsck_lfs */ char device[MAXPATHLEN]; char *progname, *special; static struct disklabel *getdisklabel(char *, int); static struct disklabel *debug_readlabel(int); #ifdef notdef static void rewritelabel(char *, int, struct disklabel *); #endif static int64_t strsuftoi64(const char *, const char *, int64_t, int64_t, int *); static void usage(void); /* CHUNKSIZE should be larger than MAXPHYS */ #define CHUNKSIZE (1024 * 1024) static size_t auto_segsize(int fd, off_t len, int version) { off_t off, bw; time_t start, finish; char buf[CHUNKSIZE]; long seeks; size_t final; int i; /* First, get sequential access bandwidth */ time(&start); finish = start; for (off = 0; finish - start < 10; off += CHUNKSIZE) { if (pread(fd, buf, CHUNKSIZE, off) < 0) break; time(&finish); } /* Bandwidth = bytes / sec */ /* printf("%ld bytes in %ld seconds\n", (long)off, (long)(finish - start)); */ bw = off / (finish - start); /* Second, seek time */ time(&start); finish = start; /* structure copy */ for (seeks = 0; finish - start < 10; ) { off = (((double)rand()) * len) / (off_t)RAND_MAX; if (pread(fd, buf, dbtob(1), off) < 0) break; time(&finish); ++seeks; } /* printf("%ld seeks in %ld seconds\n", (long)seeks, (long)(finish - start)); */ /* Seek time in units/sec */ seeks /= (finish - start); if (seeks == 0) seeks = 1; printf("bw = %ld B/s, seek time %ld ms (%ld seeks/s)\n", (long)bw, 1000/seeks, seeks); final = dbtob(btodb(4 * bw / seeks)); if (version == 1) { for (i = 0; final; final >>= 1, i++) ; final = 1 << i; } printf("using initial segment size %ld\n", (long)final); return final; } int main(int argc, char **argv) { int version, ch; struct partition *pp; struct disklabel *lp; struct stat st; int debug, force, fsi, fso, segsize, maxpartitions; uint secsize = 0; daddr_t start; char *cp, *opstring; int byte_sized = 0; int r; version = DFL_VERSION; /* what version of lfs to make */ if ((progname = strrchr(*argv, '/')) != NULL) ++progname; else progname = *argv; maxpartitions = getmaxpartitions(); if (maxpartitions > 26) fatal("insane maxpartitions value %d", maxpartitions); opstring = "AB:b:DFf:I:i:LM:m:NO:r:S:s:v:"; debug = force = segsize = start = 0; while ((ch = getopt(argc, argv, opstring)) != -1) switch(ch) { case 'A': /* Adaptively configure segment size */ segsize = -1; break; case 'B': /* LFS segment size */ segsize = strsuftoi64("segment size", optarg, LFS_MINSEGSIZE, INT64_MAX, NULL); break; case 'D': debug = 1; break; case 'F': force = 1; break; case 'I': interleave = strsuftoi64("interleave", optarg, 0, INT64_MAX, NULL); break; case 'L': /* Compatibility only */ break; case 'M': minfreeseg = strsuftoi64("minfreeseg", optarg, 0, INT64_MAX, NULL); break; case 'N': Nflag++; break; case 'O': start = strsuftoi64("start", optarg, 0, INT64_MAX, NULL); break; case 'S': secsize = strsuftoi64("sector size", optarg, 1, INT64_MAX, NULL); if (secsize <= 0 || (secsize & (secsize - 1))) fatal("%s: bad sector size", optarg); break; #ifdef COMPAT case 'T': disktype = optarg; break; #endif case 'b': bsize = strsuftoi64("block size", optarg, LFS_MINBLOCKSIZE, INT64_MAX, NULL); break; case 'f': fsize = strsuftoi64("fragment size", optarg, LFS_MINBLOCKSIZE, INT64_MAX, NULL); break; case 'i': ibsize = strsuftoi64("inode block size", optarg, LFS_MINBLOCKSIZE, INT64_MAX, NULL); break; case 'm': minfree = strsuftoi64("free space %", optarg, 0, 99, NULL); break; case 'r': roll_id = strsuftoi64("roll-forward id", optarg, 1, UINT_MAX, NULL); break; case 's': fssize = strsuftoi64("file system size", optarg, 0, INT64_MAX, &byte_sized); break; case 'v': version = strsuftoi64("file system version", optarg, 1, LFS_VERSION, NULL); break; case '?': default: usage(); } argc -= optind; argv += optind; if (argc != 2 && argc != 1) usage(); /* * If the -N flag isn't specified, open the output file. If no path * prefix, try /dev/r%s and then /dev/%s. */ special = argv[0]; if (strchr(special, '/') == NULL) { (void)snprintf(device, sizeof(device), "%sr%s", _PATH_DEV, special); if (stat(device, &st) == -1) (void)snprintf(device, sizeof(device), "%s%s", _PATH_DEV, special); special = device; } if (!Nflag) { fso = open(special, (debug ? O_CREAT : 0) | O_RDWR, DEFFILEMODE); if (fso < 0) fatal("%s: %s", special, strerror(errno)); } else fso = -1; /* Open the input file. */ fsi = open(special, O_RDONLY); if (fsi < 0) fatal("%s: %s", special, strerror(errno)); if (fstat(fsi, &st) < 0) fatal("%s: %s", special, strerror(errno)); if (!S_ISCHR(st.st_mode)) { if (debug) { lp = debug_readlabel(fsi); pp = &lp->d_partitions[0]; } else { static struct partition dummy_pp; lp = NULL; pp = &dummy_pp; pp->p_fstype = FS_BSDLFS; if (secsize == 0) secsize = 512; pp->p_size = st.st_size / secsize; } } else { cp = strchr(argv[0], '\0') - 1; if (!debug && ((*cp < 'a' || *cp > ('a' + maxpartitions - 1)) && !isdigit((unsigned char)*cp))) fatal("%s: can't figure out file system partition", argv[0]); #ifdef COMPAT if (disktype == NULL) disktype = argv[1]; #endif lp = getdisklabel(special, fsi); if (isdigit((unsigned char)*cp)) pp = &lp->d_partitions[0]; else pp = &lp->d_partitions[*cp - 'a']; if (pp->p_size == 0) fatal("%s: `%c' partition is unavailable", argv[0], *cp); } if (secsize == 0) secsize = lp->d_secsize; /* From here on out fssize is in sectors */ if (byte_sized) { fssize /= secsize; } /* If force, make the partition look like an LFS */ if (force) { pp->p_fstype = FS_BSDLFS; pp->p_size = fssize; /* 0 means to use defaults */ pp->p_fsize = 0; pp->p_frag = 0; pp->p_sgs = 0; } else if (fssize != 0 && fssize < pp->p_size) pp->p_size = fssize; /* Try autoconfiguring segment size, if asked to */ if (segsize == -1) { if (!S_ISCHR(st.st_mode)) { warnx("%s is not a character special device, ignoring -A", special); segsize = 0; } else segsize = auto_segsize(fsi, dbtob(pp->p_size), version); } /* If we're making a LFS, we break out here */ r = make_lfs(fso, secsize, pp, minfree, bsize, fsize, segsize, minfreeseg, version, start, ibsize, interleave, roll_id); if (debug) bufstats(); exit(r); } #ifdef COMPAT char lmsg[] = "%s: can't read disk label; disk type must be specified"; #else char lmsg[] = "%s: can't read disk label"; #endif static struct disklabel * getdisklabel(char *s, int fd) { static struct disklabel lab; if (ioctl(fd, DIOCGDINFO, (char *)&lab) < 0) { #ifdef COMPAT if (disktype) { struct disklabel *lp; unlabeled++; lp = getdiskbyname(disktype); if (lp == NULL) fatal("%s: unknown disk type", disktype); return (lp); } #endif (void)fprintf(stderr, "%s: ioctl (GDINFO): %s\n", progname, strerror(errno)); fatal(lmsg, s); } return (&lab); } static struct disklabel * debug_readlabel(int fd) { static struct disklabel lab; int n; if ((n = read(fd, &lab, sizeof(struct disklabel))) < 0) fatal("unable to read disk label: %s", strerror(errno)); else if (n < sizeof(struct disklabel)) fatal("short read of disklabel: %d of %ld bytes", n, (u_long) sizeof(struct disklabel)); return(&lab); } #ifdef notdef static void rewritelabel(char *s, int fd, struct disklabel *lp) { #ifdef COMPAT if (unlabeled) return; #endif lp->d_checksum = 0; lp->d_checksum = dkcksum(lp); if (ioctl(fd, DIOCWDINFO, (char *)lp) < 0) { (void)fprintf(stderr, "%s: ioctl (WDINFO): %s\n", progname, strerror(errno)); fatal("%s: can't rewrite disk label", s); } #if __vax__ if (lp->d_type == DTYPE_SMD && lp->d_flags & D_BADSECT) { int i; int cfd; daddr_t alt; off_t loff; char specname[64]; char blk[1024]; char *cp; /* * Make name for 'c' partition. */ strlcpy(specname, s, sizeof(specname)); cp = specname + strlen(specname) - 1; if (!isdigit(*cp)) *cp = 'c'; cfd = open(specname, O_WRONLY); if (cfd < 0) fatal("%s: %s", specname, strerror(errno)); if ((loff = getlabeloffset()) < 0) fatal("getlabeloffset: %s", strerror(errno)); memset(blk, 0, sizeof(blk)); *(struct disklabel *)(blk + loff) = *lp; alt = lp->d_ncylinders * lp->d_secpercyl - lp->d_nsectors; for (i = 1; i < 11 && i < lp->d_nsectors; i += 2) { if (lseek(cfd, (off_t)((alt + i) * lp->d_secsize), SEEK_SET) == -1) fatal("lseek to badsector area: %s", strerror(errno)); if (write(cfd, blk, lp->d_secsize) < lp->d_secsize) fprintf(stderr, "%s: alternate label %d write: %s\n", progname, i/2, strerror(errno)); } close(cfd); } #endif /* vax */ } #endif /* notdef */ static int64_t strsuftoi64(const char *desc, const char *arg, int64_t min, int64_t max, int *num_suffix) { int64_t result, r1; int shift = 0; char *ep; errno = 0; r1 = strtoll(arg, &ep, 10); if (ep[0] != '\0' && ep[1] != '\0') errx(1, "%s `%s' is not a valid number.", desc, arg); switch (ep[0]) { case '\0': case 's': case 'S': if (num_suffix != NULL) *num_suffix = 0; break; case 'g': case 'G': shift += 10; /* FALLTHROUGH */ case 'm': case 'M': shift += 10; /* FALLTHROUGH */ case 'k': case 'K': shift += 10; /* FALLTHROUGH */ case 'b': case 'B': if (num_suffix != NULL) *num_suffix = 1; break; default: errx(1, "`%s' is not a valid suffix for %s.", ep, desc); } result = r1 << shift; if (errno == ERANGE || result >> shift != r1) errx(1, "%s `%s' is too large to convert.", desc, arg); if (result < min) errx(1, "%s `%s' (%" PRId64 ") is less than the minimum (%" PRId64 ").", desc, arg, result, min); if (result > max) errx(1, "%s `%s' (%" PRId64 ") is greater than the maximum (%" PRId64 ").", desc, arg, result, max); return result; } void usage() { fprintf(stderr, "usage: newfs_lfs [ -fsoptions ] special-device\n"); fprintf(stderr, "where fsoptions are:\n"); fprintf(stderr, "\t-A (autoconfigure segment size)\n"); fprintf(stderr, "\t-B segment size in bytes\n"); fprintf(stderr, "\t-D (debug)\n"); fprintf(stderr, "\t-N (do not create file system, just print out parameters)\n"); fprintf(stderr, "\t-O first segment offset in sectors\n"); fprintf(stderr, "\t-b block size in bytes\n"); fprintf(stderr, "\t-f frag size in bytes\n"); fprintf(stderr, "\t-m minimum free space %%\n"); fprintf(stderr, "\t-s file system size in sectors\n"); fprintf(stderr, "\t-v version\n"); exit(1); }