getfsspecname.c revision 1.3.2.2
1 1.3.2.2 yamt /* $NetBSD: getfsspecname.c,v 1.3.2.2 2012/04/17 00:05:34 yamt Exp $ */ 2 1.3.2.2 yamt 3 1.3.2.2 yamt /*- 4 1.3.2.2 yamt * Copyright (c) 2012 The NetBSD Foundation, Inc. 5 1.3.2.2 yamt * All rights reserved. 6 1.3.2.2 yamt * 7 1.3.2.2 yamt * This code is derived from software contributed to The NetBSD Foundation 8 1.3.2.2 yamt * by Christos Zoulas. 9 1.3.2.2 yamt * 10 1.3.2.2 yamt * Redistribution and use in source and binary forms, with or without 11 1.3.2.2 yamt * modification, are permitted provided that the following conditions 12 1.3.2.2 yamt * are met: 13 1.3.2.2 yamt * 1. Redistributions of source code must retain the above copyright 14 1.3.2.2 yamt * notice, this list of conditions and the following disclaimer. 15 1.3.2.2 yamt * 2. Redistributions in binary form must reproduce the above copyright 16 1.3.2.2 yamt * notice, this list of conditions and the following disclaimer in the 17 1.3.2.2 yamt * documentation and/or other materials provided with the distribution. 18 1.3.2.2 yamt * 19 1.3.2.2 yamt * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 1.3.2.2 yamt * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 1.3.2.2 yamt * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 1.3.2.2 yamt * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 1.3.2.2 yamt * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 1.3.2.2 yamt * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 1.3.2.2 yamt * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 1.3.2.2 yamt * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 1.3.2.2 yamt * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 1.3.2.2 yamt * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 1.3.2.2 yamt * POSSIBILITY OF SUCH DAMAGE. 30 1.3.2.2 yamt */ 31 1.3.2.2 yamt #include <sys/cdefs.h> 32 1.3.2.2 yamt __RCSID("$NetBSD: getfsspecname.c,v 1.3.2.2 2012/04/17 00:05:34 yamt Exp $"); 33 1.3.2.2 yamt 34 1.3.2.2 yamt #include <sys/types.h> 35 1.3.2.2 yamt #include <sys/sysctl.h> 36 1.3.2.2 yamt #include <sys/disk.h> 37 1.3.2.2 yamt 38 1.3.2.2 yamt #include <stdio.h> 39 1.3.2.2 yamt #include <vis.h> 40 1.3.2.2 yamt #include <string.h> 41 1.3.2.2 yamt #include <fstab.h> 42 1.3.2.2 yamt #include <fcntl.h> 43 1.3.2.2 yamt #include <stdlib.h> 44 1.3.2.2 yamt #include <errno.h> 45 1.3.2.2 yamt #include <unistd.h> 46 1.3.2.2 yamt #include <util.h> 47 1.3.2.2 yamt 48 1.3.2.2 yamt #define COMPAT_DKWEDGE /* To be removed */ 49 1.3.2.2 yamt 50 1.3.2.2 yamt const char * 51 1.3.2.2 yamt getfsspecname(char *buf, size_t bufsiz, const char *name) 52 1.3.2.2 yamt { 53 1.3.2.2 yamt static const int mib[] = { CTL_HW, HW_DISKNAMES }; 54 1.3.2.2 yamt static const unsigned int miblen = __arraycount(mib); 55 1.3.2.2 yamt char *drives, *dk; 56 1.3.2.2 yamt size_t len; 57 1.3.2.2 yamt int fd, savee; 58 1.3.2.2 yamt char *vname; 59 1.3.2.2 yamt 60 1.3.2.2 yamt drives = NULL; 61 1.3.2.2 yamt vname = NULL; 62 1.3.2.2 yamt if (strncasecmp(name, "NAME=", 5) != 0) { 63 1.3.2.2 yamt #ifdef COMPAT_DKWEDGE 64 1.3.2.2 yamt /* 65 1.3.2.2 yamt * We try to open the disk name, and if we fail with EBUSY 66 1.3.2.2 yamt * we use the name as the label to find the wedge. 67 1.3.2.2 yamt */ 68 1.3.2.2 yamt char rbuf[MAXPATHLEN]; 69 1.3.2.2 yamt if (name[0] == '/') { 70 1.3.2.2 yamt if (getdiskrawname(rbuf, sizeof(rbuf), name) != NULL) { 71 1.3.2.2 yamt if ((fd = open(rbuf, O_RDONLY)) == -1) { 72 1.3.2.2 yamt if (errno == EBUSY) { 73 1.3.2.2 yamt name = strrchr(name, '/') + 1; 74 1.3.2.2 yamt goto search; 75 1.3.2.2 yamt } 76 1.3.2.2 yamt } else 77 1.3.2.2 yamt close(fd); 78 1.3.2.2 yamt } 79 1.3.2.2 yamt } 80 1.3.2.2 yamt #endif 81 1.3.2.2 yamt strlcpy(buf, name, bufsiz); 82 1.3.2.2 yamt return buf; 83 1.3.2.2 yamt } else 84 1.3.2.2 yamt name += 5; 85 1.3.2.2 yamt 86 1.3.2.2 yamt #ifdef COMPAT_DKWEDGE 87 1.3.2.2 yamt search: 88 1.3.2.2 yamt #endif 89 1.3.2.2 yamt vname = malloc(strlen(name) * 4 + 1); 90 1.3.2.2 yamt if (vname == NULL) { 91 1.3.2.2 yamt savee = errno; 92 1.3.2.2 yamt strlcpy(buf, "malloc failed", bufsiz); 93 1.3.2.2 yamt goto out; 94 1.3.2.2 yamt } 95 1.3.2.2 yamt 96 1.3.2.2 yamt strunvis(vname, name); 97 1.3.2.2 yamt 98 1.3.2.2 yamt if (sysctl(mib, miblen, NULL, &len, NULL, 0) == -1) { 99 1.3.2.2 yamt savee = errno; 100 1.3.2.2 yamt strlcpy(buf, "sysctl hw.disknames failed", bufsiz); 101 1.3.2.2 yamt goto out; 102 1.3.2.2 yamt } 103 1.3.2.2 yamt 104 1.3.2.2 yamt drives = malloc(len); 105 1.3.2.2 yamt if (drives == NULL) { 106 1.3.2.2 yamt savee = errno; 107 1.3.2.2 yamt strlcpy(buf, "malloc failed", bufsiz); 108 1.3.2.2 yamt goto out; 109 1.3.2.2 yamt } 110 1.3.2.2 yamt if (sysctl(mib, miblen, drives, &len, NULL, 0) == -1) { 111 1.3.2.2 yamt savee = errno; 112 1.3.2.2 yamt strlcpy(buf, "sysctl hw.disknames failed", bufsiz); 113 1.3.2.2 yamt goto out; 114 1.3.2.2 yamt } 115 1.3.2.2 yamt 116 1.3.2.2 yamt for (dk = strtok(drives, " "); dk != NULL; dk = strtok(NULL, " ")) { 117 1.3.2.2 yamt struct dkwedge_info dkw; 118 1.3.2.2 yamt if (strncmp(dk, "dk", 2) != 0) 119 1.3.2.2 yamt continue; 120 1.3.2.2 yamt fd = opendisk(dk, O_RDONLY, buf, bufsiz, 0); 121 1.3.2.2 yamt if (fd == -1) 122 1.3.2.2 yamt continue; 123 1.3.2.2 yamt if (ioctl(fd, DIOCGWEDGEINFO, &dkw) == -1) { 124 1.3.2.2 yamt savee = errno; 125 1.3.2.2 yamt snprintf(buf, bufsiz, "%s: getwedgeinfo", dk); 126 1.3.2.2 yamt (void)close(fd); 127 1.3.2.2 yamt goto out; 128 1.3.2.2 yamt } 129 1.3.2.2 yamt (void)close(fd); 130 1.3.2.2 yamt if (strcmp(vname, (char *)dkw.dkw_wname) == 0) { 131 1.3.2.2 yamt char *p = strstr(buf, "/rdk"); 132 1.3.2.2 yamt if (p++ == NULL) 133 1.3.2.2 yamt return buf; 134 1.3.2.2 yamt strcpy(p, p + 1); 135 1.3.2.2 yamt free(drives); 136 1.3.2.2 yamt free(vname); 137 1.3.2.2 yamt return buf; 138 1.3.2.2 yamt } 139 1.3.2.2 yamt } 140 1.3.2.2 yamt savee = ESRCH; 141 1.3.2.2 yamt snprintf(buf, bufsiz, "no match for `%s'", vname); 142 1.3.2.2 yamt out: 143 1.3.2.2 yamt free(drives); 144 1.3.2.2 yamt free(vname); 145 1.3.2.2 yamt errno = savee; 146 1.3.2.2 yamt return NULL; 147 1.3.2.2 yamt } 148
Indexes created Tue Sep 30 11:09:46 GMT 2025