/* $NetBSD: disklabel.c,v 1.47 1997/10/19 20:45:42 pk Exp $ */ /* * Copyright (c) 1987, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Symmetric Computer Systems. * * 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. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. 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) 1987, 1993\n\ The Regents of the University of California. All rights reserved.\n"); #endif /* not lint */ #ifndef lint #if 0 static char sccsid[] = "@(#)disklabel.c 8.4 (Berkeley) 5/4/95"; /* from static char sccsid[] = "@(#)disklabel.c 1.2 (Symmetric) 11/28/85"; */ #else __RCSID("$NetBSD: disklabel.c,v 1.47 1997/10/19 20:45:42 pk Exp $"); #endif #endif /* not lint */ #include #include #include #include #include #define DKTYPENAMES #include #include #include #include #include #include #include #include #include #include #include #include #include #include "pathnames.h" #include "extern.h" #include "dkcksum.h" /* * Disklabel: read and write disklabels. * The label is usually placed on one of the first sectors of the disk. * Many machines also place a bootstrap in the same area, * in which case the label is embedded in the bootstrap. * The bootstrap source must leave space at the proper offset * for the label on such machines. */ #ifndef BBSIZE #define BBSIZE 8192 /* size of boot area, with label */ #endif #ifndef NUMBOOT #define NUMBOOT 0 #endif extern char *__progname; #define DEFEDITOR _PATH_VI static char *dkname; static char *specname; static char tmpfil[] = _PATH_TMP; static char namebuf[BBSIZE], *np = namebuf; static struct disklabel lab; char bootarea[BBSIZE]; #if NUMBOOT > 0 static int installboot; /* non-zero if we should install a boot program */ static char *bootbuf; /* pointer to buffer with remainder of boot prog */ static int bootsize; /* size of remaining boot program */ static char *xxboot; /* primary boot */ static char *bootxx; /* secondary boot */ static char boot0[MAXPATHLEN]; #if NUMBOOT > 1 static char boot1[MAXPATHLEN]; #endif #endif static enum { UNSPEC, EDIT, READ, RESTORE, SETWRITEABLE, WRITE, WRITEBOOT, INTERACT } op = UNSPEC; static int rflag; static int tflag; static int Cflag; #ifdef DEBUG static int debug; #define OPTIONS "BCNRWb:deirs:tw" #else #define OPTIONS "BCNRWb:eirs:tw" #endif #ifdef __i386__ static struct dos_partition *dosdp; /* i386 DOS partition, if found */ static struct dos_partition *readmbr __P((int)); #endif #ifdef __arm32__ static u_int filecore_partition_offset; static u_int get_filecore_partition __P((int)); static u_int filecore_checksum __P((u_char *)); #endif /* __arm32__ */ int main __P((int, char *[])); static void makedisktab __P((FILE *, struct disklabel *)); static void makelabel __P((char *, char *, struct disklabel *)); static void l_perror __P((char *)); static struct disklabel *readlabel __P((int)); static struct disklabel *makebootarea __P((char *, struct disklabel *, int)); static int edit __P((struct disklabel *, int)); static int editit __P((void)); static char *skip __P((char *)); static char *word __P((char *)); static int getasciilabel __P((FILE *, struct disklabel *)); #if NUMBOOT > 0 static void setbootflag __P((struct disklabel *)); #endif static void usage __P((void)); int main(argc, argv) int argc; char *argv[]; { struct disklabel *lp; FILE *t; int ch, f, writeable, error = 0; while ((ch = getopt(argc, argv, OPTIONS)) != -1) switch (ch) { #if NUMBOOT > 0 case 'B': ++installboot; break; case 'b': xxboot = optarg; break; #if NUMBOOT > 1 case 's': bootxx = optarg; break; #endif #endif case 'C': ++Cflag; break; case 'N': if (op != UNSPEC) usage(); writeable = 0; op = SETWRITEABLE; break; case 'R': if (op != UNSPEC) usage(); op = RESTORE; break; case 'W': if (op != UNSPEC) usage(); writeable = 1; op = SETWRITEABLE; break; case 'e': if (op != UNSPEC) usage(); op = EDIT; break; case 'i': if (op != UNSPEC) usage(); op = INTERACT; break; case 't': ++tflag; break; case 'r': ++rflag; break; case 'w': if (op != UNSPEC) usage(); op = WRITE; break; #ifdef DEBUG case 'd': debug++; break; #endif case '?': default: usage(); } argc -= optind; argv += optind; #if NUMBOOT > 0 if (installboot) { rflag++; if (op == UNSPEC) op = WRITEBOOT; } else { if (op == UNSPEC) op = READ; } #else if (op == UNSPEC) op = READ; #endif if (argc < 1) usage(); dkname = argv[0]; f = opendisk(dkname, op == READ ? O_RDONLY : O_RDWR, np, MAXPATHLEN, 0); specname = np; np += strlen(specname) + 1; if (f < 0) err(4, "%s", specname); #ifdef __i386__ /* * Check for presence of DOS partition table in * master boot record. Return pointer to NetBSD/i386 * partition, if present. If no valid partition table, * return 0. If valid partition table present, but no * partition to use, return a pointer to a non-386bsd * partition. */ dosdp = readmbr(f); #endif #ifdef __arm32__ /* * Check for the presence of a RiscOS filecore boot block * indicating an ADFS file system on the disc. * Return the offset to the NetBSD part of the disc if * this can be determined. * This routine will terminate disklabel if the disc * is found to be ADFS only. */ filecore_partition_offset = get_filecore_partition(f); #endif /* __arm32__ */ switch (op) { case EDIT: if (argc != 1) usage(); lp = readlabel(f); error = edit(lp, f); break; case INTERACT: if (argc != 1) usage(); lp = readlabel(f); /* * XXX: Fill some default values so checklabel does not fail */ if (lp->d_bbsize == 0) lp->d_bbsize = BBSIZE; if (lp->d_sbsize == 0) lp->d_sbsize = SBSIZE; interact(lp, f); break; case READ: if (argc != 1) usage(); lp = readlabel(f); if (tflag) makedisktab(stdout, lp); else display(stdout, lp); error = checklabel(lp); break; case RESTORE: if (argc < 2 || argc > 3) usage(); #if NUMBOOT > 0 if (installboot && argc == 3) makelabel(argv[2], (char *)0, &lab); #endif lp = makebootarea(bootarea, &lab, f); if (!(t = fopen(argv[1], "r"))) err(4, "%s", argv[1]); if (getasciilabel(t, lp)) error = writelabel(f, bootarea, lp); break; case SETWRITEABLE: if (ioctl(f, DIOCWLABEL, (char *)&writeable) < 0) err(4, "ioctl DIOCWLABEL"); break; case WRITE: if (argc < 2 || argc > 3) usage(); makelabel(argv[1], argc == 3 ? argv[2] : (char *)0, &lab); lp = makebootarea(bootarea, &lab, f); *lp = lab; if (checklabel(lp) == 0) error = writelabel(f, bootarea, lp); break; case WRITEBOOT: #if NUMBOOT > 0 { struct disklabel tlab; lp = readlabel(f); tlab = *lp; if (argc == 2) makelabel(argv[1], (char *)0, &lab); lp = makebootarea(bootarea, &lab, f); *lp = tlab; if (checklabel(lp) == 0) error = writelabel(f, bootarea, lp); break; } #endif case UNSPEC: usage(); } return error; } /* * Construct a prototype disklabel from /etc/disktab. As a side * effect, set the names of the primary and secondary boot files * if specified. */ static void makelabel(type, name, lp) char *type, *name; struct disklabel *lp; { struct disklabel *dp; dp = getdiskbyname(type); if (dp == NULL) errx(1, "unknown disk type: %s", type); *lp = *dp; #if NUMBOOT > 0 /* * Set bootstrap name(s). * 1. If set from command line, use those, * 2. otherwise, check if disktab specifies them (b0 or b1), * 3. otherwise, makebootarea() will choose ones based on the name * of the disk special file. E.g. /dev/ra0 -> raboot, bootra */ if (!xxboot && lp->d_boot0) { if (*lp->d_boot0 != '/') (void)sprintf(boot0, "%s/%s", _PATH_BOOTDIR, lp->d_boot0); else (void)strcpy(boot0, lp->d_boot0); xxboot = boot0; } #if NUMBOOT > 1 if (!bootxx && lp->d_boot1) { if (*lp->d_boot1 != '/') (void)sprintf(boot1, "%s/%s", _PATH_BOOTDIR, lp->d_boot1); else (void)strcpy(boot1, lp->d_boot1); bootxx = boot1; } #endif #endif /* d_packname is union d_boot[01], so zero */ (void) memset(lp->d_packname, 0, sizeof(lp->d_packname)); if (name) (void)strncpy(lp->d_packname, name, sizeof(lp->d_packname)); } int writelabel(f, boot, lp) int f; char *boot; struct disklabel *lp; { int writeable; off_t sectoffset = 0; #if NUMBOOT > 0 setbootflag(lp); #endif lp->d_magic = DISKMAGIC; lp->d_magic2 = DISKMAGIC; lp->d_checksum = 0; lp->d_checksum = dkcksum(lp); #ifdef __sparc__ /* Let the kernel deal with SunOS disklabel compatibility */ if (0) { #else if (rflag) { #endif #ifdef __i386__ struct partition *pp = &lp->d_partitions[2]; /* * If NetBSD/i386 DOS partition is missing, or if * the label to be written is not within partition, * prompt first. Need to allow this in case operator * wants to convert the drive for dedicated use. * In this case, partition 'a' had better start at 0, * otherwise we reject the request as meaningless. -wfj */ if (dosdp && dosdp->dp_typ == DOSPTYP_386BSD && pp->p_size && dosdp->dp_start == pp->p_offset) { sectoffset = pp->p_offset * lp->d_secsize; } else { if (dosdp) { int first, ch; (void) printf("Erase the previous contents of the disk? [n]: "); (void) fflush(stdout); first = ch = getchar(); while (ch != '\n' && ch != EOF) ch = getchar(); if (first != 'y' && first != 'Y') exit(0); } sectoffset = 0; } #endif #ifdef __arm32__ sectoffset = filecore_partition_offset * DEV_BSIZE; #endif /* __arm32__ */ /* * First set the kernel disk label, * then write a label to the raw disk. * If the SDINFO ioctl fails because it is unimplemented, * keep going; otherwise, the kernel consistency checks * may prevent us from changing the current (in-core) * label. */ if (ioctl(f, DIOCSDINFO, lp) < 0 && errno != ENODEV && errno != ENOTTY) { l_perror("ioctl DIOCSDINFO"); return (1); } if (lseek(f, sectoffset, SEEK_SET) < 0) { perror("lseek"); return (1); } /* * write enable label sector before write (if necessary), * disable after writing. */ writeable = 1; if (ioctl(f, DIOCWLABEL, &writeable) < 0) perror("ioctl DIOCWLABEL"); #ifdef __alpha__ /* * The Alpha requires that the boot block be checksummed. * The first 63 8-byte quantites are summed into the 64th. */ { int i; u_int64_t *dp, sum; dp = (u_int64_t *)boot; sum = 0; for (i = 0; i < 63; i++) sum += dp[i]; dp[63] = sum; } #endif if (write(f, boot, lp->d_bbsize) != lp->d_bbsize) { perror("write"); return (1); } #if NUMBOOT > 0 /* * Output the remainder of the disklabel */ if (bootbuf && write(f, bootbuf, bootsize) != bootsize) { perror("write"); return(1); } #endif writeable = 0; if (ioctl(f, DIOCWLABEL, &writeable) < 0) perror("ioctl DIOCWLABEL"); } else { if (ioctl(f, DIOCWDINFO, lp) < 0) { l_perror("ioctl DIOCWDINFO"); return (1); } } #ifdef __vax__ if (lp->d_type == DTYPE_SMD && lp->d_flags & D_BADSECT) { daddr_t alt; int i; alt = lp->d_ncylinders * lp->d_secpercyl - lp->d_nsectors; for (i = 1; i < 11 && i < lp->d_nsectors; i += 2) { (void)lseek(f, (off_t)((alt + i) * lp->d_secsize), SEEK_SET); if (write(f, boot, lp->d_secsize) < lp->d_secsize) warn("alternate label %d write", i/2); } } #endif return (0); } static void l_perror(s) char *s; { switch (errno) { case ESRCH: warnx("%s: No disk label on disk;\n" "use \"disklabel -r\" to install initial label", s); break; case EINVAL: warnx("%s: Label magic number or checksum is wrong!\n" "(disklabel or kernel is out of date?)", s); break; case EBUSY: warnx("%s: Open partition would move or shrink", s); break; case EXDEV: warnx("%s: Labeled partition or 'a' partition must start at beginning of disk", s); break; default: warn("%s", s); break; } } #ifdef __i386__ /* * Fetch DOS partition table from disk. */ static struct dos_partition * readmbr(f) int f; { static char mbr[DEV_BSIZE]; struct dos_partition *dp = (struct dos_partition *)&mbr[DOSPARTOFF]; int part; if (lseek(f, (off_t)DOSBBSECTOR, SEEK_SET) < 0 || read(f, mbr, sizeof(mbr)) < sizeof(mbr)) err(4, "can't read master boot record"); /* * Don't (yet) know disk geometry (BIOS), use * partition table to find NetBSD/i386 partition, and obtain * disklabel from there. */ /* Check if table is valid. */ for (part = 0; part < NDOSPART; part++) { if ((dp[part].dp_flag & ~0x80) != 0) return (0); } /* Find NetBSD partition. */ for (part = 0; part < NDOSPART; part++) { if (dp[part].dp_size && dp[part].dp_typ == DOSPTYP_386BSD) return (&dp[part]); } /* If no NetBSD partition, find first used partition. */ for (part = 0; part < NDOSPART; part++) { if (dp[part].dp_size) { warnx("warning, DOS partition table with no valid NetBSD partition"); return (&dp[part]); } } /* Table appears to be empty. */ return (0); } #endif #ifdef __arm32__ /* * static u_int filecore_checksum(u_char *bootblock) * * Calculates the filecore boot block checksum. This is used to validate * a filecore boot block on the disc. If a boot block is validated then * it is used to locate the partition table. If the boot block is not * validated, it is assumed that the whole disc is NetBSD. */ /* * This can be coded better using add with carry but as it is used rarely * there is not much point writing it in assembly. */ static u_int filecore_checksum(bootblock) u_char *bootblock; { u_int sum; u_int loop; sum = 0; for (loop = 0; loop < 512; ++loop) sum += bootblock[loop]; if (sum == 0) return(0xffff); sum = 0; for (loop = 0; loop < 511; ++loop) { sum += bootblock[loop]; if (sum > 255) sum -= 255; } return(sum); } /* * Fetch filecore bootblock from disk and analyse it */ static u_int get_filecore_partition(f) int f; { static char bb[DEV_BSIZE]; struct filecore_bootblock *fcbb = (struct filecore_bootblock *)bb; u_int offset; if (lseek(f, (off_t)FILECORE_BOOT_SECTOR * DEV_BSIZE, SEEK_SET) < 0 || read(f, bb, sizeof(bb)) < sizeof(bb)) err(4, "can't read filecore boot block"); /* Check if table is valid. */ if (filecore_checksum(bb) != fcbb->checksum) return(0); /* * Check for NetBSD/arm32 (RiscBSD) partition marker. * If found the NetBSD disklabel location is easy. */ offset = (fcbb->partition_cyl_low + (fcbb->partition_cyl_high << 8)) * fcbb->heads * fcbb->secspertrack; if (fcbb->partition_type == PARTITION_FORMAT_RISCBSD) return(offset); else if (fcbb->partition_type == PARTITION_FORMAT_RISCIX) { /* * Ok we need to read the RISCiX partition table and * search for a partition named RiscBSD, NetBSD or * Empty: */ struct riscix_partition_table *riscix_part = (struct riscix_partition_table *)bb; int loop; if (lseek(f, (off_t)offset * DEV_BSIZE, SEEK_SET) < 0 || read(f, bb, sizeof(bb)) < sizeof(bb)) err(4, "can't read riscix partition table"); /* Break out as soon as we find a suitable partition */ for (loop = 0; loop < NRISCIX_PARTITIONS; ++loop) { if (strcmp(riscix_part->partitions[loop].rp_name, "RiscBSD") == 0 || strcmp(riscix_part->partitions[loop].rp_name, "NetBSD") == 0 || strcmp(riscix_part->partitions[loop].rp_name, "Empty:") == 0) { offset = riscix_part->partitions[loop].rp_start; break; } } if (loop == NRISCIX_PARTITIONS) { /* * Valid filecore boot block, RISCiX partition table * but no NetBSD partition. We should leave this disc alone. */ err(4, "No NetBSD partition found in RISCiX partition table - Cannot label\n"); } return(offset); } else { /* * Valid filecore boot block and no non-ADFS partition. * This means that the whole disc is allocated for ADFS * so do not trash ! If the user really wants to put a * NetBSD disklabel on the disc then they should remove * the filecore boot block first with dd. */ err(4, "This is a filecore only disk - Cannot label\n"); } return(0); } #endif /* __arm32__ */ /* * Fetch disklabel for disk. * Use ioctl to get label unless -r flag is given. */ static struct disklabel * readlabel(f) int f; { struct disklabel *lp; if (rflag) { char *msg; off_t sectoffset = 0; #ifdef __i386__ if (dosdp && dosdp->dp_size && dosdp->dp_typ == DOSPTYP_386BSD) sectoffset = dosdp->dp_start * DEV_BSIZE; #endif #ifdef __arm32__ sectoffset = filecore_partition_offset * DEV_BSIZE; #endif /* __arm32__ */ if (lseek(f, sectoffset, SEEK_SET) < 0 || read(f, bootarea, BBSIZE) < BBSIZE) err(4, "%s", specname); msg = "no disk label"; for (lp = (struct disklabel *)bootarea; lp <= (struct disklabel *)(bootarea + BBSIZE - sizeof(*lp)); lp = (struct disklabel *)((char *)lp + sizeof(long))) { if (lp->d_magic == DISKMAGIC && lp->d_magic2 == DISKMAGIC) { if (lp->d_npartitions <= MAXPARTITIONS && dkcksum(lp) == 0) return (lp); msg = "disk label corrupted"; } } /* lp = (struct disklabel *)(bootarea + LABELOFFSET); */ errx(1, msg); } else { lp = &lab; if (ioctl(f, DIOCGDINFO, lp) < 0) err(4, "ioctl DIOCGDINFO"); } return (lp); } /* * Construct a bootarea (d_bbsize bytes) in the specified buffer ``boot'' * Returns a pointer to the disklabel portion of the bootarea. */ static struct disklabel * makebootarea(boot, dp, f) char *boot; struct disklabel *dp; int f; { struct disklabel *lp; char *p; #if NUMBOOT > 0 int b; char *dkbasename; # if NUMBOOT <= 1 struct stat sb; # endif #endif /* XXX */ if (dp->d_secsize == 0) { dp->d_secsize = DEV_BSIZE; dp->d_bbsize = BBSIZE; } lp = (struct disklabel *) (boot + (LABELSECTOR * dp->d_secsize) + LABELOFFSET); (void) memset(lp, 0, sizeof *lp); #if NUMBOOT > 0 /* * If we are not installing a boot program but we are installing a * label on disk then we must read the current bootarea so we don't * clobber the existing boot. */ if (!installboot) { if (rflag) { if (read(f, boot, BBSIZE) < BBSIZE) err(4, "%s", specname); (void) memset(lp, 0, sizeof *lp); } return (lp); } /* * We are installing a boot program. Determine the name(s) and * read them into the appropriate places in the boot area. */ if (!xxboot || !bootxx) { dkbasename = np; if ((p = strrchr(dkname, '/')) == NULL) p = dkname; else p++; while (*p && !isdigit(*p)) *np++ = *p++; *np++ = '\0'; if (!xxboot) { (void)sprintf(np, "%s/%sboot", _PATH_BOOTDIR, dkbasename); if (access(np, F_OK) < 0 && dkbasename[0] == 'r') dkbasename++; xxboot = np; (void)sprintf(xxboot, "%s/%sboot", _PATH_BOOTDIR, dkbasename); np += strlen(xxboot) + 1; } #if NUMBOOT > 1 if (!bootxx) { (void)sprintf(np, "%s/boot%s", _PATH_BOOTDIR, dkbasename); if (access(np, F_OK) < 0 && dkbasename[0] == 'r') dkbasename++; bootxx = np; (void)sprintf(bootxx, "%s/boot%s", _PATH_BOOTDIR, dkbasename); np += strlen(bootxx) + 1; } #endif } #ifdef DEBUG if (debug) warnx("bootstraps: xxboot = %s, bootxx = %s", xxboot, bootxx ? bootxx : "NONE"); #endif /* * Strange rules: * 1. One-piece bootstrap (hp300/hp800) * up to d_bbsize bytes of ``xxboot'' go in bootarea, the rest * is remembered and written later following the bootarea. * 2. Two-piece bootstraps (vax/i386?/mips?) * up to d_secsize bytes of ``xxboot'' go in first d_secsize * bytes of bootarea, remaining d_bbsize-d_secsize filled * from ``bootxx''. */ b = open(xxboot, O_RDONLY); if (b < 0) err(4, "%s", xxboot); #if NUMBOOT > 1 if (read(b, boot, (int)dp->d_secsize) < 0) err(4, "%s", xxboot); (void)close(b); b = open(bootxx, O_RDONLY); if (b < 0) err(4, "%s", bootxx); if (read(b, &boot[dp->d_secsize], (int)(dp->d_bbsize-dp->d_secsize)) < 0) err(4, "%s", bootxx); #else if (read(b, boot, (int)dp->d_bbsize) < 0) err(4, "%s", xxboot); (void)fstat(b, &sb); bootsize = (int)sb.st_size - dp->d_bbsize; if (bootsize > 0) { /* XXX assume d_secsize is a power of two */ bootsize = (bootsize + dp->d_secsize-1) & ~(dp->d_secsize-1); bootbuf = (char *)malloc((size_t)bootsize); if (bootbuf == 0) err(4, "%s", xxboot); if (read(b, bootbuf, bootsize) < 0) { free(bootbuf); err(4, "%s", xxboot); } } #endif (void)close(b); #endif /* * Make sure no part of the bootstrap is written in the area * reserved for the label. */ for (p = (char *)lp; p < (char *)lp + sizeof(struct disklabel); p++) if (*p) errx(2, "Bootstrap doesn't leave room for disk label"); return (lp); } static void makedisktab(f, lp) FILE *f; struct disklabel *lp; { int i; char *did = "\\\n\t:"; struct partition *pp; (void) fprintf(f, "%.*s|Automatically generated label:\\\n\t:dt=", (int) sizeof(lp->d_typename), lp->d_typename); if ((unsigned) lp->d_type < DKMAXTYPES) (void) fprintf(f, "%s:", dktypenames[lp->d_type]); else (void) fprintf(f, "unknown%d:", lp->d_type); (void) fprintf(f, "se#%d:", lp->d_secsize); (void) fprintf(f, "ns#%d:", lp->d_nsectors); (void) fprintf(f, "nt#%d:", lp->d_ntracks); (void) fprintf(f, "sc#%d:", lp->d_secpercyl); (void) fprintf(f, "nc#%d:", lp->d_ncylinders); if (lp->d_rpm != 3600) { (void) fprintf(f, "%srm#%d:", did, lp->d_rpm); did = ""; } if (lp->d_interleave != 1) { (void) fprintf(f, "%sil#%d:", did, lp->d_interleave); did = ""; } if (lp->d_trackskew != 0) { (void) fprintf(f, "%ssk#%d:", did, lp->d_trackskew); did = ""; } if (lp->d_cylskew != 0) { (void) fprintf(f, "%scs#%d:", did, lp->d_cylskew); did = ""; } if (lp->d_headswitch != 0) { (void) fprintf(f, "%shs#%d:", did, lp->d_headswitch); did = ""; } if (lp->d_trkseek != 0) { (void) fprintf(f, "%sts#%d:", did, lp->d_trkseek); did = ""; } #ifdef notyet (void) fprintf(f, "drivedata: "); for (i = NDDATA - 1; i >= 0; i--) if (lp->d_drivedata[i]) break; if (i < 0) i = 0; for (j = 0; j <= i; j++) (void) fprintf(f, "%d ", lp->d_drivedata[j]); #endif pp = lp->d_partitions; for (i = 0; i < lp->d_npartitions; i++, pp++) { if (pp->p_size) { char c = 'a' + i; (void) fprintf(f, "\\\n\t:"); (void) fprintf(f, "p%c#%d:", c, pp->p_size); (void) fprintf(f, "o%c#%d:", c, pp->p_offset); if (pp->p_fstype != FS_UNUSED) { if ((unsigned) pp->p_fstype < FSMAXTYPES) (void) fprintf(f, "t%c=%s:", c, fstypenames[pp->p_fstype]); else (void) fprintf(f, "t%c=unknown%d:", c, pp->p_fstype); } switch (pp->p_fstype) { case FS_UNUSED: break; case FS_BSDFFS: (void) fprintf(f, "b%c#%d:", c, pp->p_fsize * pp->p_frag); (void) fprintf(f, "f%c#%d:", c, pp->p_fsize); break; case FS_EX2FS: (void) fprintf(f, "b%c#%d:", c, pp->p_fsize * pp->p_frag); (void) fprintf(f, "f%c#%d:", c, pp->p_fsize); break; default: break; } } } (void) fprintf(f, "\n"); (void) fflush(f); } void display(f, lp) FILE *f; struct disklabel *lp; { int i, j; struct partition *pp; (void) fprintf(f, "# %s:\n", specname); if ((unsigned) lp->d_type < DKMAXTYPES) (void) fprintf(f, "type: %s\n", dktypenames[lp->d_type]); else (void) fprintf(f, "type: %d\n", lp->d_type); (void) fprintf(f, "disk: %.*s\n", (int) sizeof(lp->d_typename), lp->d_typename); (void) fprintf(f, "label: %.*s\n", (int) sizeof(lp->d_packname), lp->d_packname); (void) fprintf(f, "flags:"); if (lp->d_flags & D_REMOVABLE) (void) fprintf(f, " removable"); if (lp->d_flags & D_ECC) (void) fprintf(f, " ecc"); if (lp->d_flags & D_BADSECT) (void) fprintf(f, " badsect"); (void) fprintf(f, "\n"); (void) fprintf(f, "bytes/sector: %ld\n", (long) lp->d_secsize); (void) fprintf(f, "sectors/track: %ld\n", (long) lp->d_nsectors); (void) fprintf(f, "tracks/cylinder: %ld\n", (long) lp->d_ntracks); (void) fprintf(f, "sectors/cylinder: %ld\n", (long) lp->d_secpercyl); (void) fprintf(f, "cylinders: %ld\n", (long) lp->d_ncylinders); (void) fprintf(f, "total sectors: %ld\n", (long) lp->d_secperunit); (void) fprintf(f, "rpm: %ld\n", (long) lp->d_rpm); (void) fprintf(f, "interleave: %ld\n", (long) lp->d_interleave); (void) fprintf(f, "trackskew: %ld\n", (long) lp->d_trackskew); (void) fprintf(f, "cylinderskew: %ld\n", (long) lp->d_cylskew); (void) fprintf(f, "headswitch: %ld\t\t# milliseconds\n", (long) lp->d_headswitch); (void) fprintf(f, "track-to-track seek: %ld\t# milliseconds\n", (long) lp->d_trkseek); (void) fprintf(f, "drivedata: "); for (i = NDDATA - 1; i >= 0; i--) if (lp->d_drivedata[i]) break; if (i < 0) i = 0; for (j = 0; j <= i; j++) (void) fprintf(f, "%d ", lp->d_drivedata[j]); (void) fprintf(f, "\n\n%d partitions:\n", lp->d_npartitions); (void) fprintf(f, "# size offset fstype [fsize bsize cpg]\n"); pp = lp->d_partitions; for (i = 0; i < lp->d_npartitions; i++, pp++) { if (pp->p_size) { if (Cflag && lp->d_secpercyl && lp->d_nsectors) { char sbuf[32], obuf[32]; sprintf(sbuf, "%d/%d/%d", pp->p_size/lp->d_secpercyl, (pp->p_size%lp->d_secpercyl) / lp->d_nsectors, pp->p_size%lp->d_nsectors); sprintf(obuf, "%d/%d/%d", pp->p_offset/lp->d_secpercyl, (pp->p_offset%lp->d_secpercyl) / lp->d_nsectors, pp->p_offset%lp->d_nsectors); (void) fprintf(f, " %c: %8s %8s ", 'a' + i, sbuf, obuf); } else (void) fprintf(f, " %c: %8d %8d ", 'a' + i, pp->p_size, pp->p_offset); if ((unsigned) pp->p_fstype < FSMAXTYPES) (void) fprintf(f, "%10.10s", fstypenames[pp->p_fstype]); else (void) fprintf(f, "%10d", pp->p_fstype); switch (pp->p_fstype) { case FS_UNUSED: /* XXX */ (void) fprintf(f, " %5d %5d %5.5s ", pp->p_fsize, pp->p_fsize * pp->p_frag, ""); break; case FS_BSDFFS: (void) fprintf(f, " %5d %5d %5d ", pp->p_fsize, pp->p_fsize * pp->p_frag, pp->p_cpg); break; case FS_EX2FS: (void) fprintf(f, " %5d %5d ", pp->p_fsize, pp->p_fsize * pp->p_frag); break; default: (void) fprintf(f, "%22.22s", ""); break; } if (lp->d_secpercyl != 0) { (void) fprintf(f, " # (Cyl. %4d", pp->p_offset / lp->d_secpercyl); if (pp->p_offset % lp->d_secpercyl) putc('*', f); else putc(' ', f); (void) fprintf(f, "- %d", (pp->p_offset + pp->p_size + lp->d_secpercyl - 1) / lp->d_secpercyl - 1); if (pp->p_size % lp->d_secpercyl) putc('*', f); (void) fprintf(f, ")\n"); } else (void) fprintf(f, "\n"); } } (void) fflush(f); } static int edit(lp, f) struct disklabel *lp; int f; { int first, ch, fd; struct disklabel label; FILE *fp; if ((fd = mkstemp(tmpfil)) == -1 || (fp = fdopen(fd, "w")) == NULL) { warn("%s", tmpfil); return (1); } (void)fchmod(fd, 0600); display(fp, lp); (void) fclose(fp); for (;;) { if (!editit()) break; fp = fopen(tmpfil, "r"); if (fp == NULL) { warn("%s", tmpfil); break; } (void) memset(&label, 0, sizeof(label)); if (getasciilabel(fp, &label)) { *lp = label; if (writelabel(f, bootarea, lp) == 0) { (void) unlink(tmpfil); return (0); } } (void) printf("re-edit the label? [y]: "); (void) fflush(stdout); first = ch = getchar(); while (ch != '\n' && ch != EOF) ch = getchar(); if (first == 'n' || first == 'N') break; } (void)unlink(tmpfil); return (1); } static int editit() { int pid, xpid; int stat; sigset_t sigset, osigset; sigemptyset(&sigset); sigaddset(&sigset, SIGINT); sigaddset(&sigset, SIGQUIT); sigaddset(&sigset, SIGHUP); sigprocmask(SIG_BLOCK, &sigset, &osigset); while ((pid = fork()) < 0) { if (errno != EAGAIN) { sigprocmask(SIG_SETMASK, &osigset, (sigset_t *)0); warn("fork"); return (0); } sleep(1); } if (pid == 0) { char *ed; sigprocmask(SIG_SETMASK, &osigset, (sigset_t *)0); setgid(getgid()); setuid(getuid()); if ((ed = getenv("EDITOR")) == (char *)0) ed = DEFEDITOR; execlp(ed, ed, tmpfil, 0); perror(ed); exit(1); } while ((xpid = wait(&stat)) >= 0) if (xpid == pid) break; sigprocmask(SIG_SETMASK, &osigset, (sigset_t *)0); return(!stat); } static char * skip(cp) char *cp; { cp += strspn(cp, " \t"); if (*cp == '\0') return (NULL); return (cp); } static char * word(cp) char *cp; { if (cp == NULL || *cp == '\0') return (NULL); cp += strcspn(cp, " \t"); if (*cp == '\0') return (NULL); *cp++ = '\0'; cp += strspn(cp, " \t"); if (*cp == '\0') return (NULL); return (cp); } /* * Read an ascii label in from fd f, * in the same format as that put out by display(), * and fill in lp. */ static int getasciilabel(f, lp) FILE *f; struct disklabel *lp; { char **cpp, *cp; struct partition *pp; char *tp, *s, line[BUFSIZ]; int v, lineno = 0, errors = 0; lp->d_bbsize = BBSIZE; /* XXX */ lp->d_sbsize = SBSIZE; /* XXX */ while (fgets(line, sizeof(line) - 1, f)) { lineno++; if ((cp = strpbrk(line, "#\r\n")) != NULL) *cp = '\0'; cp = skip(line); if (cp == NULL) /* blank line or comment line */ continue; tp = strchr(cp, ':'); /* everything has a colon in it */ if (tp == NULL) { warnx("line %d: syntax error", lineno); errors++; continue; } *tp++ = '\0', tp = skip(tp); if (!strcmp(cp, "type")) { if (tp == NULL) tp = "unknown"; cpp = dktypenames; for (; cpp < &dktypenames[DKMAXTYPES]; cpp++) if ((s = *cpp) && !strcmp(s, tp)) { lp->d_type = cpp - dktypenames; goto next; } v = atoi(tp); if ((unsigned)v >= DKMAXTYPES) warnx("line %d: warning, unknown disk type: %s", lineno, tp); lp->d_type = v; continue; } if (!strcmp(cp, "flags")) { for (v = 0; (cp = tp) && *cp != '\0';) { tp = word(cp); if (!strcmp(cp, "removable")) v |= D_REMOVABLE; else if (!strcmp(cp, "ecc")) v |= D_ECC; else if (!strcmp(cp, "badsect")) v |= D_BADSECT; else { warnx("line %d: bad flag: %s", lineno, cp); errors++; } } lp->d_flags = v; continue; } if (!strcmp(cp, "drivedata")) { int i; for (i = 0; (cp = tp) && *cp != '\0' && i < NDDATA;) { lp->d_drivedata[i++] = atoi(cp); tp = word(cp); } continue; } if (sscanf(cp, "%d partitions", &v) == 1) { if (v == 0 || (unsigned)v > MAXPARTITIONS) { warnx("line %d: bad # of partitions", lineno); lp->d_npartitions = MAXPARTITIONS; errors++; } else lp->d_npartitions = v; continue; } if (tp == NULL) tp = ""; if (!strcmp(cp, "disk")) { strncpy(lp->d_typename, tp, sizeof (lp->d_typename)); continue; } if (!strcmp(cp, "label")) { strncpy(lp->d_packname, tp, sizeof (lp->d_packname)); continue; } if (!strcmp(cp, "bytes/sector")) { v = atoi(tp); if (v <= 0 || (v % 512) != 0) { warnx("line %d: bad %s: %s", lineno, cp, tp); errors++; } else lp->d_secsize = v; continue; } if (!strcmp(cp, "sectors/track")) { v = atoi(tp); if (v <= 0) { warnx("line %d: bad %s: %s", lineno, cp, tp); errors++; } else lp->d_nsectors = v; continue; } if (!strcmp(cp, "sectors/cylinder")) { v = atoi(tp); if (v <= 0) { warnx("line %d: bad %s: %s", lineno, cp, tp); errors++; } else lp->d_secpercyl = v; continue; } if (!strcmp(cp, "tracks/cylinder")) { v = atoi(tp); if (v <= 0) { warnx("line %d: bad %s: %s", lineno, cp, tp); errors++; } else lp->d_ntracks = v; continue; } if (!strcmp(cp, "cylinders")) { v = atoi(tp); if (v <= 0) { warnx("line %d: bad %s: %s", lineno, cp, tp); errors++; } else lp->d_ncylinders = v; continue; } if (!strcmp(cp, "total sectors")) { v = atoi(tp); if (v <= 0) { warnx("line %d: bad %s: %s", lineno, cp, tp); errors++; } else lp->d_secperunit = v; continue; } if (!strcmp(cp, "rpm")) { v = atoi(tp); if (v <= 0) { warnx("line %d: bad %s: %s", lineno, cp, tp); errors++; } else lp->d_rpm = v; continue; } if (!strcmp(cp, "interleave")) { v = atoi(tp); if (v <= 0) { warnx("line %d: bad %s: %s", lineno, cp, tp); errors++; } else lp->d_interleave = v; continue; } if (!strcmp(cp, "trackskew")) { v = atoi(tp); if (v < 0) { warnx("line %d: bad %s: %s", lineno, cp, tp); errors++; } else lp->d_trackskew = v; continue; } if (!strcmp(cp, "cylinderskew")) { v = atoi(tp); if (v < 0) { warnx("line %d: bad %s: %s", lineno, cp, tp); errors++; } else lp->d_cylskew = v; continue; } if (!strcmp(cp, "headswitch")) { v = atoi(tp); if (v < 0) { warnx("line %d: bad %s: %s", lineno, cp, tp); errors++; } else lp->d_headswitch = v; continue; } if (!strcmp(cp, "track-to-track seek")) { v = atoi(tp); if (v < 0) { warnx("line %d: bad %s: %s", lineno, cp, tp); errors++; } else lp->d_trkseek = v; continue; } if ('a' <= *cp && *cp <= 'z' && cp[1] == '\0') { unsigned part = *cp - 'a'; if (part > lp->d_npartitions) { warnx("line %d: bad partition name: %s", lineno, cp); errors++; continue; } pp = &lp->d_partitions[part]; #define _CHECKLINE \ if (tp == NULL || *tp == '\0') { \ warnx("line %d: too few fields", lineno); \ errors++; \ break; \ } #define NXTNUM(n) { \ _CHECKLINE \ cp = tp, tp = word(cp), (n) = (cp != NULL ? atoi(cp) : 0); \ } #define NXTXNUM(n) { \ char *ptr; \ int m; \ _CHECKLINE \ cp = tp, tp = word(cp); \ m = strtol(cp, &ptr, 10); \ if (*ptr == '\0') \ (n) = m; \ else { \ if (*ptr++ != '/') { \ warnx("line %d: invalid format", lineno); \ errors++; \ break; \ } \ (n) = m * lp->d_secpercyl; \ m = strtol(ptr, &ptr, 10); \ if (*ptr++ != '/') { \ warnx("line %d: invalid format", lineno); \ errors++; \ break; \ } \ (n) += m * lp->d_nsectors; \ m = strtol(ptr, &ptr, 10); \ (n) += m; \ } \ } NXTXNUM(v); if (v < 0) { warnx("line %d: bad partition size: %s", lineno, cp); errors++; } else pp->p_size = v; NXTXNUM(v); if (v < 0) { warnx("line %d: bad partition offset: %s", lineno, cp); errors++; } else pp->p_offset = v; /* can't use word() here because of blanks in fstypenames[] */ cp = tp; cpp = fstypenames; for (; cpp < &fstypenames[FSMAXTYPES]; cpp++) { s = *cpp; if (s == NULL || (cp[strlen(s)] != ' ' && cp[strlen(s)] != '\t' && cp[strlen(s)] != '\0')) continue; if (!memcmp(s, cp, strlen(s))) { pp->p_fstype = cpp - fstypenames; tp += strlen(s); if (*tp == '\0') tp = NULL; else { tp += strspn(tp, " \t"); if (*tp == '\0') tp = NULL; } goto gottype; } } tp = word(cp); if (isdigit(*cp)) v = atoi(cp); else v = FSMAXTYPES; if ((unsigned)v >= FSMAXTYPES) { warnx("line %d: warning, unknown filesystem type: %s", lineno, cp); v = FS_UNUSED; } pp->p_fstype = v; gottype: switch (pp->p_fstype) { case FS_UNUSED: /* XXX */ NXTNUM(pp->p_fsize); if (pp->p_fsize == 0) break; NXTNUM(v); pp->p_frag = v / pp->p_fsize; break; case FS_BSDFFS: NXTNUM(pp->p_fsize); if (pp->p_fsize == 0) break; NXTNUM(v); pp->p_frag = v / pp->p_fsize; NXTNUM(pp->p_cpg); break; case FS_EX2FS: NXTNUM(pp->p_fsize); if (pp->p_fsize == 0) break; NXTNUM(v); pp->p_frag = v / pp->p_fsize; break; default: break; } continue; } warnx("line %d: unknown field: %s", lineno, cp); errors++; next: ; } errors += checklabel(lp); return (errors == 0); } /* * Check disklabel for errors and fill in * derived fields according to supplied values. */ int checklabel(lp) struct disklabel *lp; { struct partition *pp; int i, errors = 0; char part; if (lp->d_secsize == 0) { warnx("sector size %d", lp->d_secsize); return (1); } if (lp->d_nsectors == 0) { warnx("sectors/track %d", lp->d_nsectors); return (1); } if (lp->d_ntracks == 0) { warnx("tracks/cylinder %d", lp->d_ntracks); return (1); } if (lp->d_ncylinders == 0) { warnx("cylinders/unit %d", lp->d_ncylinders); errors++; } if (lp->d_rpm == 0) warnx("warning, revolutions/minute %d", lp->d_rpm); if (lp->d_secpercyl == 0) lp->d_secpercyl = lp->d_nsectors * lp->d_ntracks; if (lp->d_secperunit == 0) lp->d_secperunit = lp->d_secpercyl * lp->d_ncylinders; #ifdef __i386__notyet__ if (dosdp && dosdp->dp_size && dosdp->dp_typ == DOSPTYP_386BSD && lp->d_secperunit > dosdp->dp_start + dosdp->dp_size) { warnx("exceeds DOS partition size"); errors++; lp->d_secperunit = dosdp->dp_start + dosdp->dp_size; } /* XXX should also check geometry against BIOS's idea */ #endif if (lp->d_bbsize == 0) { warnx("boot block size %d", lp->d_bbsize); errors++; } else if (lp->d_bbsize % lp->d_secsize) warnx("warning, boot block size %% sector-size != 0"); if (lp->d_sbsize == 0) { warnx("super block size %d", lp->d_sbsize); errors++; } else if (lp->d_sbsize % lp->d_secsize) warnx("warning, super block size %% sector-size != 0"); if (lp->d_npartitions > MAXPARTITIONS) warnx("warning, number of partitions (%d) > MAXPARTITIONS (%d)", lp->d_npartitions, MAXPARTITIONS); for (i = 0; i < lp->d_npartitions; i++) { part = 'a' + i; pp = &lp->d_partitions[i]; if (pp->p_size == 0 && pp->p_offset != 0) warnx("warning, partition %c: size 0, but offset %d", part, pp->p_offset); #ifdef notdef if (pp->p_size % lp->d_secpercyl) warnx("warning, partition %c: size %% cylinder-size != 0", part); if (pp->p_offset % lp->d_secpercyl) warnx("warning, partition %c: offset %% cylinder-size != 0", part); #endif if (pp->p_offset > lp->d_secperunit) { warnx("partition %c: offset past end of unit", part); errors++; } if (pp->p_offset + pp->p_size > lp->d_secperunit) { warnx("partition %c: partition extends past end of unit", part); errors++; } } for (; i < MAXPARTITIONS; i++) { part = 'a' + i; pp = &lp->d_partitions[i]; if (pp->p_size || pp->p_offset) warnx("warning, unused partition %c: size %d offset %d", 'a' + i, pp->p_size, pp->p_offset); } return (errors); } #if NUMBOOT > 0 /* * If we are installing a boot program that doesn't fit in d_bbsize * we need to mark those partitions that the boot overflows into. * This allows newfs to prevent creation of a filesystem where it might * clobber bootstrap code. */ static void setbootflag(lp) struct disklabel *lp; { struct partition *pp; int i, errors = 0; char part; u_long boffset; if (bootbuf == 0) return; boffset = bootsize / lp->d_secsize; for (i = 0; i < lp->d_npartitions; i++) { part = 'a' + i; pp = &lp->d_partitions[i]; if (pp->p_size == 0) continue; if (boffset <= pp->p_offset) { if (pp->p_fstype == FS_BOOT) pp->p_fstype = FS_UNUSED; } else if (pp->p_fstype != FS_BOOT) { if (pp->p_fstype != FS_UNUSED) { warnx("boot overlaps used partition %c", part); errors++; } else { pp->p_fstype = FS_BOOT; warnx("warning, boot overlaps partition %c, %s", part, "marked as FS_BOOT"); } } } if (errors) errx(4, "cannot install boot program"); } #endif static void usage() { static const struct { char *name; char *expn; } usages[] = { #if NUMBOOT > 0 { "%s [-rt] [-C] disk", "(to read label)" }, { "%s -w [-r] disk type [ packid ]", "(to write label with existing boot program)" }, { "%s -e [-r] [-C] disk", "(to edit label)" }, { "%s -R [-r] disk protofile", "(to restore label with existing boot program)" }, # if NUMBOOT > 1 { "%s -B [ -b xxboot [ -s bootxx ] ] disk [ type ]", "(to install boot program with existing label)" }, { "%s -w -B [ -b xxboot [ -s bootxx ] ] disk type [ packid ]", "(to write label and boot program)" }, { "%s -R -B [ -b xxboot [ -s bootxx ] ] disk protofile [ type ]", "(to restore label and boot program)" }, # else { "%s -B [ -b bootprog ] disk [ type ]", "(to install boot program with existing on-disk label)" }, { "%s -w -B [ -b bootprog ] disk type [ packid ]", "(to write label and install boot program)" }, { "%s -R -B [ -b bootprog ] disk protofile [ type ]", "(to restore label and install boot program)" }, #endif #else { "%s [-rt] disk", "(to read label)" }, { "%s -w [-r] disk type [ packid ]", "(to write label)" }, { "%s -e [-r] disk", "(to edit label)" }, { "%s -i [-r] disk", "(to create a label interactively)" }, { "%s -R [-r] disk protofile", "(to restore label)" }, #endif { "%s [-NW] disk", "(to write disable/enable label)" }, { NULL, NULL } }; int i; for (i = 0; usages[i].name; i++) { (void) fputs(i ? "or " : "Usage: ", stderr); (void) fprintf(stderr, usages[i].name, __progname); (void) fputs("\n\t", stderr); (void) fprintf(stderr, usages[i].expn, __progname); (void) fputs("\n", stderr); } exit(1); }