partutil.c revision 1.5
1 /* $NetBSD: partutil.c,v 1.5 2009/06/05 21:52:31 haad 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __RCSID("$NetBSD: partutil.c,v 1.5 2009/06/05 21:52:31 haad Exp $"); 34 35 #include <sys/types.h> 36 #include <sys/disklabel.h> 37 #include <sys/disk.h> 38 #include <sys/ioctl.h> 39 #include <sys/stat.h> 40 41 42 #include <disktab.h> 43 #include <err.h> 44 #include <errno.h> 45 #include <fcntl.h> 46 #include <util.h> 47 #include <unistd.h> 48 #include <stdlib.h> 49 #include <string.h> 50 51 #include <prop/proplib.h> 52 53 #include "partutil.h" 54 55 56 /* 57 * Set what we need to know about disk geometry. 58 */ 59 static void 60 dict2geom(struct disk_geom *geo, prop_dictionary_t dict) 61 { 62 memset(geo, 0, sizeof(struct disk_geom)); 63 prop_dictionary_get_int64(dict, "sectors-per-unit", &geo->dg_secperunit); 64 prop_dictionary_get_uint32(dict, "sector-size", &geo->dg_secsize); 65 prop_dictionary_get_uint32(dict, "sectors-per-track", &geo->dg_nsectors); 66 prop_dictionary_get_uint32(dict, "tracks-per-cylinder", &geo->dg_ntracks); 67 prop_dictionary_get_uint32(dict, "cylinders-per-unit", &geo->dg_ncylinders); 68 } 69 70 71 static void 72 part2wedge(struct dkwedge_info *dkw, const struct disklabel *lp, const char *s) 73 { 74 struct stat sb; 75 const struct partition *pp; 76 int ptn; 77 78 (void)memset(dkw, 0, sizeof(*dkw)); 79 if (stat(s, &sb) == -1) 80 return; 81 82 ptn = strchr(s, '\0')[-1] - 'a'; 83 if ((unsigned)ptn >= lp->d_npartitions || 84 (devminor_t)ptn != DISKPART(sb.st_rdev)) 85 return; 86 87 pp = &lp->d_partitions[ptn]; 88 dkw->dkw_offset = pp->p_offset; 89 dkw->dkw_size = pp->p_size; 90 dkw->dkw_parent[0] = '*'; 91 switch (pp->p_fstype) { 92 default: 93 (void)strcpy(dkw->dkw_ptype, DKW_PTYPE_UNKNOWN); 94 break; 95 case FS_UNUSED: 96 (void)strcpy(dkw->dkw_ptype, DKW_PTYPE_UNUSED); 97 break; 98 case FS_SWAP: 99 (void)strcpy(dkw->dkw_ptype, DKW_PTYPE_SWAP); 100 break; 101 case FS_BSDFFS: 102 (void)strcpy(dkw->dkw_ptype, DKW_PTYPE_FFS); 103 break; 104 case FS_BSDLFS: 105 (void)strcpy(dkw->dkw_ptype, DKW_PTYPE_LFS); 106 break; 107 case FS_EX2FS: 108 (void)strcpy(dkw->dkw_ptype, DKW_PTYPE_EXT2FS); 109 break; 110 case FS_ISO9660: 111 (void)strcpy(dkw->dkw_ptype, DKW_PTYPE_ISO9660); 112 break; 113 case FS_ADOS: 114 (void)strcpy(dkw->dkw_ptype, DKW_PTYPE_AMIGADOS); 115 break; 116 case FS_HFS: 117 (void)strcpy(dkw->dkw_ptype, DKW_PTYPE_APPLEHFS); 118 break; 119 case FS_MSDOS: 120 (void)strcpy(dkw->dkw_ptype, DKW_PTYPE_FAT); 121 break; 122 case FS_FILECORE: 123 (void)strcpy(dkw->dkw_ptype, DKW_PTYPE_FILECORE); 124 break; 125 case FS_APPLEUFS: 126 (void)strcpy(dkw->dkw_ptype, DKW_PTYPE_APPLEUFS); 127 break; 128 case FS_NTFS: 129 (void)strcpy(dkw->dkw_ptype, DKW_PTYPE_NTFS); 130 break; 131 } 132 } 133 134 int 135 getdiskinfo(const char *s, int fd, const char *dt, struct disk_geom *geo, 136 struct dkwedge_info *dkw) 137 { 138 struct disklabel lab; 139 struct disklabel *lp = &lab; 140 prop_dictionary_t disk_dict, geom_dict; 141 142 if (dt) { 143 lp = getdiskbyname(dt); 144 if (lp == NULL) 145 errx(1, "%s: unknown disk type", dt); 146 } 147 148 /* Get disk description dictionary */ 149 if (prop_dictionary_recv_ioctl(fd, DIOCGDISKINFO, &disk_dict) != 0) { 150 warn("Please implement DIOCGDISKINFO for %s\n disk driver\n", s); 151 return (errno); 152 } 153 154 geom_dict = prop_dictionary_get(disk_dict, "geometry"); 155 dict2geom(geo, geom_dict); 156 157 /* Get info about partition/wedge */ 158 if (ioctl(fd, DIOCGWEDGEINFO, dkw) == -1) { 159 warn("ioctl (DIOCGWEDGEINFO)"); 160 printf("Using old disklabel method\n"); 161 if (ioctl(fd, DIOCGDINFO, lp) == -1) 162 errx(errno, "Please implement DIOCGWEDGEINFO or DIOCGDINFO for disk device %s\n", s); 163 164 part2wedge(dkw, lp, s); 165 } 166 167 return 0; 168 } 169
Indexes created Tue Sep 23 02:09:52 GMT 2025