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34dc7c2f BB |
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 (the "License"). | |
6 | * You may not use this file except in compliance with the License. | |
7 | * | |
8 | * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE | |
9 | * or http://www.opensolaris.org/os/licensing. | |
10 | * See the License for the specific language governing permissions | |
11 | * and limitations under the License. | |
12 | * | |
13 | * When distributing Covered Code, include this CDDL HEADER in each | |
14 | * file and include the License file at usr/src/OPENSOLARIS.LICENSE. | |
15 | * If applicable, add the following below this CDDL HEADER, with the | |
16 | * fields enclosed by brackets "[]" replaced with your own identifying | |
17 | * information: Portions Copyright [yyyy] [name of copyright owner] | |
18 | * | |
19 | * CDDL HEADER END | |
20 | */ | |
21 | /* | |
22 | * Copyright 2007 Sun Microsystems, Inc. All rights reserved. | |
23 | * Use is subject to license terms. | |
24 | */ | |
25 | ||
b128c09f | 26 | #pragma ident "%Z%%M% %I% %E% SMI" |
34dc7c2f BB |
27 | |
28 | #include <errno.h> | |
29 | #include <libgen.h> | |
30 | #include <libintl.h> | |
31 | #include <stdio.h> | |
32 | #include <stdlib.h> | |
33 | #include <strings.h> | |
34 | ||
35 | #include "zpool_util.h" | |
36 | ||
37 | /* | |
38 | * Utility function to guarantee malloc() success. | |
39 | */ | |
40 | void * | |
41 | safe_malloc(size_t size) | |
42 | { | |
43 | void *data; | |
44 | ||
45 | if ((data = calloc(1, size)) == NULL) { | |
46 | (void) fprintf(stderr, "internal error: out of memory\n"); | |
47 | exit(1); | |
48 | } | |
49 | ||
50 | return (data); | |
51 | } | |
52 | ||
53 | /* | |
54 | * Same as above, but for strdup() | |
55 | */ | |
56 | char * | |
57 | safe_strdup(const char *str) | |
58 | { | |
59 | char *ret; | |
60 | ||
61 | if ((ret = strdup(str)) == NULL) { | |
62 | (void) fprintf(stderr, "internal error: out of memory\n"); | |
63 | exit(1); | |
64 | } | |
65 | ||
66 | return (ret); | |
67 | } | |
68 | ||
69 | /* | |
70 | * Display an out of memory error message and abort the current program. | |
71 | */ | |
72 | void | |
73 | zpool_no_memory(void) | |
74 | { | |
75 | assert(errno == ENOMEM); | |
76 | (void) fprintf(stderr, | |
77 | gettext("internal error: out of memory\n")); | |
78 | exit(1); | |
79 | } | |
80 | ||
81 | /* | |
82 | * Return the number of logs in supplied nvlist | |
83 | */ | |
84 | uint_t | |
85 | num_logs(nvlist_t *nv) | |
86 | { | |
87 | uint_t nlogs = 0; | |
88 | uint_t c, children; | |
89 | nvlist_t **child; | |
90 | ||
91 | if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN, | |
92 | &child, &children) != 0) | |
93 | return (0); | |
94 | ||
95 | for (c = 0; c < children; c++) { | |
96 | uint64_t is_log = B_FALSE; | |
97 | ||
98 | (void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_LOG, | |
99 | &is_log); | |
100 | if (is_log) | |
101 | nlogs++; | |
102 | } | |
103 | return (nlogs); | |
104 | } |