partutil.c revision 1.1
1 /* $NetBSD: partutil.c,v 1.1 2006/08/26 21:54:05 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 2006 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Christos Zoulas. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 __RCSID("$NetBSD: partutil.c,v 1.1 2006/08/26 21:54:05 christos Exp $"); 41 42 #include <sys/types.h> 43 #include <sys/disklabel.h> 44 #include <sys/disk.h> 45 #include <sys/ioctl.h> 46 #include <sys/stat.h> 47 48 #include <disktab.h> 49 #include <fcntl.h> 50 #include <util.h> 51 #include <unistd.h> 52 #include <err.h> 53 #include <string.h> 54 #include <errno.h> 55 56 #include "partutil.h" 57 58 static void 59 label2geom(struct disk_geom *geo, const struct disklabel *lp) 60 { 61 geo->dg_secperunit = lp->d_secperunit; 62 geo->dg_secsize = lp->d_secsize; 63 geo->dg_nsectors = lp->d_nsectors; 64 geo->dg_ntracks = lp->d_ntracks; 65 geo->dg_ncylinders = lp->d_ncylinders; 66 geo->dg_secpercyl = lp->d_secpercyl; 67 geo->dg_pcylinders = lp->d_ncylinders; 68 geo->dg_sparespertrack = lp->d_sparespertrack; 69 geo->dg_sparespercyl = lp->d_sparespercyl; 70 geo->dg_acylinders = lp->d_acylinders; 71 } 72 73 static void 74 part2wedge(struct dkwedge_info *dkw, const struct disklabel *lp, const char *s) 75 { 76 struct stat sb; 77 struct partition *pp; 78 int ptn; 79 80 (void)memset(dkw, 0, sizeof(*dkw)); 81 if (stat(s, &sb) == -1) 82 return; 83 84 ptn = strchr(s, '\0')[-1] - 'a'; 85 if (ptn >= lp->d_npartitions || ptn != DISKPART(sb.st_rdev)) 86 return; 87 88 pp = &lp->d_partitions[ptn]; 89 dkw->dkw_offset = pp->p_offset; 90 dkw->dkw_size = pp->p_size; 91 dkw->dkw_parent[0] = '*'; 92 switch (pp->p_fstype) { 93 default: 94 (void)strcpy(dkw->dkw_ptype, DKW_PTYPE_UNKNOWN); 95 break; 96 case FS_UNUSED: 97 (void)strcpy(dkw->dkw_ptype, DKW_PTYPE_UNUSED); 98 break; 99 case FS_SWAP: 100 (void)strcpy(dkw->dkw_ptype, DKW_PTYPE_SWAP); 101 break; 102 case FS_BSDFFS: 103 (void)strcpy(dkw->dkw_ptype, DKW_PTYPE_FFS); 104 break; 105 case FS_BSDLFS: 106 (void)strcpy(dkw->dkw_ptype, DKW_PTYPE_LFS); 107 break; 108 case FS_EX2FS: 109 (void)strcpy(dkw->dkw_ptype, DKW_PTYPE_EXT2FS); 110 break; 111 case FS_ISO9660: 112 (void)strcpy(dkw->dkw_ptype, DKW_PTYPE_ISO9660); 113 break; 114 case FS_ADOS: 115 (void)strcpy(dkw->dkw_ptype, DKW_PTYPE_AMIGADOS); 116 break; 117 case FS_HFS: 118 (void)strcpy(dkw->dkw_ptype, DKW_PTYPE_APPLEHFS); 119 break; 120 case FS_MSDOS: 121 (void)strcpy(dkw->dkw_ptype, DKW_PTYPE_FAT); 122 break; 123 case FS_FILECORE: 124 (void)strcpy(dkw->dkw_ptype, DKW_PTYPE_FILECORE); 125 break; 126 case FS_APPLEUFS: 127 (void)strcpy(dkw->dkw_ptype, DKW_PTYPE_APPLEUFS); 128 break; 129 case FS_NTFS: 130 (void)strcpy(dkw->dkw_ptype, DKW_PTYPE_NTFS); 131 break; 132 } 133 } 134 135 int 136 getdiskinfo(const char *s, int fd, const char *dt, struct disk_geom *geo, 137 struct dkwedge_info *dkw) 138 { 139 struct disklabel lab; 140 struct disklabel *lp = &lab; 141 char parent[1024]; 142 143 if (dt) { 144 lp = getdiskbyname(dt); 145 if (lp == NULL) 146 errx(1, "%s: unknown disk type", dt); 147 goto part; 148 } 149 150 if (ioctl(fd, DIOCGDINFO, lp) == -1) { 151 if (errno == ENOTTY) { 152 int pfd; 153 if (ioctl(fd, DIOCGWEDGEINFO, dkw) == -1) { 154 warn("ioctl (DIOCGWEDGEINFO)"); 155 goto bad; 156 } 157 pfd = opendisk(dkw->dkw_parent, O_RDONLY, 158 parent, sizeof(parent), 0); 159 if (pfd == -1) { 160 warn("Cannot open `%s'", dkw->dkw_parent); 161 goto bad; 162 } 163 if (ioctl(pfd, DIOCGDINFO, lp) != -1) { 164 (void)close(pfd); 165 goto label; 166 } else { 167 int serrno = errno; 168 (void)close(pfd); 169 errno = serrno; 170 } 171 } 172 warn("ioctl (DIOCGDINFO)"); 173 goto bad; 174 } 175 part: 176 part2wedge(dkw, lp, s); 177 label: 178 label2geom(geo, lp); 179 return 0; 180 bad: 181 return -1; 182 } 183
Indexes created Wed Sep 24 05:09:52 GMT 2025