1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 #include <errno.h> 30 #include <libgen.h> 31 #include <libintl.h> 32 #include <stdio.h> 33 #include <stdlib.h> 34 #include <strings.h> 35 36 #include "zpool_util.h" 37 38 /* 39 * Utility function to guarantee malloc() success. 40 */ 41 void * 42 safe_malloc(size_t size) 43 { 44 void *data; 45 46 if ((data = calloc(1, size)) == NULL) { 47 (void) fprintf(stderr, "internal error: out of memory\n"); 48 exit(1); 49 } 50 51 return (data); 52 } 53 54 /* 55 * Same as above, but for strdup() 56 */ 57 char * 58 safe_strdup(const char *str) 59 { 60 char *ret; 61 62 if ((ret = strdup(str)) == NULL) { 63 (void) fprintf(stderr, "internal error: out of memory\n"); 64 exit(1); 65 } 66 67 return (ret); 68 } 69 70 /* 71 * Display an out of memory error message and abort the current program. 72 */ 73 void 74 no_memory(void) 75 { 76 assert(errno == ENOMEM); 77 (void) fprintf(stderr, 78 gettext("internal error: out of memory\n")); 79 exit(1); 80 } 81 82 /* 83 * Given a vdev, return the name to display in iostat. If the vdev has a path, 84 * we use that, stripping off any leading "/dev/dsk/"; if not, we use the type. 85 * We also check if this is a whole disk, in which case we strip off the 86 * trailing 's0' slice name. 87 */ 88 char * 89 vdev_get_name(nvlist_t *nv) 90 { 91 char *path; 92 uint64_t wholedisk; 93 94 if (nvlist_lookup_string(nv, ZPOOL_CONFIG_PATH, &path) == 0) { 95 96 if (strncmp(path, "/dev/dsk/", 9) == 0) 97 path += 9; 98 99 if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_WHOLE_DISK, 100 &wholedisk) == 0 && wholedisk) { 101 char *tmp = safe_strdup(path); 102 tmp[strlen(path) - 2] = '\0'; 103 return (tmp); 104 } 105 } else { 106 verify(nvlist_lookup_string(nv, ZPOOL_CONFIG_TYPE, &path) == 0); 107 } 108 109 return (safe_strdup(path)); 110 } 111