xref: /illumos-gate/usr/src/cmd/availdevs/availdevs.c (revision eb633035c80613ec93d62f90482837adaaf21a0a)
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 /*
23  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
24  * Copyright 2012 Milan Jurik. All rights reserved.
25  */
26 
27 #include "availdevs.h"
28 #include <libzfs.h>
29 #include <libzfs_jni_diskmgt.h>
30 #include <libzfs_jni_ipool.h>
31 #include <libxml/parser.h>
32 
33 /*
34  * Function prototypes
35  */
36 
37 static void handle_error(const char *, va_list);
38 static void set_uint64_prop(xmlNodePtr, const char *, uint64_t);
39 static int add_disk_to_xml(dmgt_disk_t *, void *);
40 static int add_pool_to_xml(nvlist_t *, void *);
41 static xmlDocPtr create_doc();
42 int main();
43 
44 /*
45  * Static functions
46  */
47 
48 static void
handle_error(const char * fmt,va_list ap)49 handle_error(const char *fmt, va_list ap)
50 {
51 	(void) vfprintf(stderr, fmt, ap);
52 	(void) fprintf(stderr, "\n");
53 }
54 
55 static void
set_uint64_prop(xmlNodePtr node,const char * attr,uint64_t value)56 set_uint64_prop(xmlNodePtr node, const char *attr, uint64_t value)
57 {
58 	static char tmp[64];
59 	(void) snprintf(tmp, sizeof (tmp), "%llu", value);
60 	(void) xmlSetProp(node, (xmlChar *)attr, (xmlChar *)tmp);
61 }
62 
63 static int
add_disk_to_xml(dmgt_disk_t * dp,void * data)64 add_disk_to_xml(dmgt_disk_t *dp, void *data)
65 {
66 	int i;
67 	xmlNodePtr available = *((xmlNodePtr *)data);
68 
69 	xmlNodePtr disk = xmlNewChild(
70 	    available, NULL, (xmlChar *)ELEMENT_DISK, NULL);
71 	(void) xmlSetProp(disk,
72 	    (xmlChar *)ATTR_DISK_NAME, (xmlChar *)dp->name);
73 
74 	set_uint64_prop(disk, ATTR_DISK_SIZE, dp->size);
75 
76 	(void) xmlSetProp(disk, (xmlChar *)ATTR_DISK_INUSE, (xmlChar *)
77 	    (dp->in_use ? VAL_ATTR_TRUE : VAL_ATTR_FALSE));
78 
79 	if (dp->aliases != NULL) {
80 		for (i = 0; dp->aliases[i] != NULL; i++) {
81 			xmlNodePtr alias = xmlNewChild(
82 			    disk, NULL, (xmlChar *)ELEMENT_ALIAS, NULL);
83 			(void) xmlSetProp(alias,
84 			    (xmlChar *)ATTR_ALIAS_NAME,
85 			    (xmlChar *)dp->aliases[i]);
86 		}
87 	}
88 
89 	if (dp->slices != NULL) {
90 		for (i = 0; dp->slices[i] != NULL; i++) {
91 			dmgt_slice_t *sp = dp->slices[i];
92 			xmlNodePtr slice = xmlNewChild(
93 			    disk, NULL, (xmlChar *)ELEMENT_SLICE, NULL);
94 			(void) xmlSetProp(slice,
95 			    (xmlChar *)ATTR_SLICE_NAME, (xmlChar *)sp->name);
96 
97 			set_uint64_prop(slice, ATTR_SLICE_SIZE, sp->size);
98 			set_uint64_prop(slice, ATTR_SLICE_START, sp->start);
99 
100 			if (sp->used_name != NULL) {
101 				(void) xmlSetProp(slice,
102 				    (xmlChar *)ATTR_SLICE_USED_NAME,
103 				    (xmlChar *)sp->used_name);
104 			}
105 
106 			if (sp->used_by != NULL) {
107 				(void) xmlSetProp(slice,
108 				    (xmlChar *)ATTR_SLICE_USED_BY,
109 				    (xmlChar *)sp->used_by);
110 			}
111 		}
112 	}
113 
114 	return (0);
115 }
116 
117 static int
add_pool_to_xml(nvlist_t * config,void * data)118 add_pool_to_xml(nvlist_t *config, void *data)
119 {
120 	char *c;
121 	char *name;
122 	uint64_t guid;
123 	uint64_t version;
124 	uint64_t state;
125 	nvlist_t *devices;
126 	uint_t n;
127 	vdev_stat_t *vs;
128 	xmlNodePtr pool;
129 	xmlNodePtr importable = *((xmlNodePtr *)data);
130 
131 	if (nvlist_lookup_string(config, ZPOOL_CONFIG_POOL_NAME, &name) ||
132 	    nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &guid) ||
133 	    nvlist_lookup_uint64(config, ZPOOL_CONFIG_VERSION, &version) ||
134 	    nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_STATE, &state) ||
135 	    nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, &devices) ||
136 	    nvlist_lookup_uint64_array(
137 	    devices, ZPOOL_CONFIG_VDEV_STATS, (uint64_t **)&vs, &n)) {
138 		return (-1);
139 	}
140 
141 	pool = xmlNewChild(importable, NULL, (xmlChar *)ELEMENT_POOL, NULL);
142 	(void) xmlSetProp(pool, (xmlChar *)ATTR_POOL_NAME, (xmlChar *)name);
143 
144 	set_uint64_prop(pool, ATTR_POOL_ID, guid);
145 	set_uint64_prop(pool, ATTR_POOL_VERSION, version);
146 	set_uint64_prop(pool, ATTR_POOL_USED, vs->vs_alloc);
147 	set_uint64_prop(pool, ATTR_POOL_SIZE, vs->vs_space);
148 	set_uint64_prop(pool, ATTR_POOL_REPLACEMENT_SIZE, vs->vs_rsize);
149 	set_uint64_prop(pool, ATTR_POOL_READ_BYTES,
150 	    vs->vs_bytes[ZIO_TYPE_READ]);
151 	set_uint64_prop(pool, ATTR_POOL_WRITE_BYTES,
152 	    vs->vs_bytes[ZIO_TYPE_WRITE]);
153 	set_uint64_prop(pool, ATTR_POOL_READ_OPERATIONS,
154 	    vs->vs_ops[ZIO_TYPE_READ]);
155 	set_uint64_prop(pool, ATTR_POOL_WRITE_OPERATIONS,
156 	    vs->vs_ops[ZIO_TYPE_WRITE]);
157 	set_uint64_prop(pool, ATTR_POOL_READ_ERRORS, vs->vs_read_errors);
158 	set_uint64_prop(pool, ATTR_POOL_WRITE_ERRORS, vs->vs_write_errors);
159 	set_uint64_prop(pool, ATTR_POOL_CHECKSUM_ERRORS,
160 	    vs->vs_checksum_errors);
161 
162 	(void) xmlSetProp(pool, (xmlChar *)ATTR_DEVICE_STATE,
163 	    (xmlChar *)zjni_vdev_state_to_str(vs->vs_state));
164 
165 	(void) xmlSetProp(pool, (xmlChar *)ATTR_DEVICE_STATUS,
166 	    (xmlChar *)zjni_vdev_aux_to_str(vs->vs_aux));
167 
168 	(void) xmlSetProp(pool, (xmlChar *)ATTR_POOL_STATE,
169 	    (xmlChar *)zjni_pool_state_to_str(state));
170 
171 	(void) xmlSetProp(pool, (xmlChar *)ATTR_POOL_STATUS, (xmlChar *)
172 	    zjni_pool_status_to_str(zpool_import_status(config, &c, NULL)));
173 
174 	return (0);
175 }
176 
177 static xmlDocPtr
create_doc(void)178 create_doc(void)
179 {
180 	/* Create the XML document */
181 	xmlDocPtr doc = xmlNewDoc((xmlChar *)"1.0");
182 
183 	/* Create the root node */
184 	xmlNodePtr root = xmlNewDocNode(
185 	    doc, NULL, (xmlChar *)ELEMENT_ROOT, NULL);
186 	(void) xmlAddChild((xmlNodePtr) doc, (xmlNodePtr)root);
187 
188 	return (doc);
189 }
190 
191 /*
192  * Main entry to availdisks.
193  *
194  * @return      0 on successful exit, non-zero otherwise
195  */
196 int
main(int argc,char ** argv)197 main(int argc, char **argv)
198 {
199 	int error = 0;
200 	int get_pools = 0;
201 	int get_devices = 0;
202 
203 	/* Examine first arg */
204 	int c = getopt(argc, argv, CLI_OPTSTRING);
205 	switch (c) {
206 		case CLI_ARG_ALL:
207 			get_devices = 1;
208 			get_pools = 1;
209 			break;
210 
211 		case CLI_ARG_DEVICES:
212 			get_devices = 1;
213 			break;
214 
215 		case CLI_ARG_POOLS:
216 			get_pools = 1;
217 			break;
218 
219 		default:
220 			return (1);
221 	}
222 
223 	argc -= optind;
224 	argv += optind;
225 
226 	if (get_pools || get_devices) {
227 		xmlDocPtr doc = create_doc();
228 		xmlNodePtr root = xmlDocGetRootElement(doc);
229 
230 		if (get_devices) {
231 			/* Create the available node */
232 			xmlNodePtr available = xmlNewChild(root, NULL,
233 			    (xmlChar *)ELEMENT_AVAILABLE, NULL);
234 
235 			/* libzfs_jni_diskmgt.o error handler */
236 			dmgt_set_error_handler(handle_error);
237 
238 			error = dmgt_avail_disk_iter(
239 			    add_disk_to_xml, &available);
240 		}
241 
242 		if (get_pools && !error) {
243 			/* Create the importable node */
244 			xmlNodePtr importable = xmlNewChild(root, NULL,
245 			    (xmlChar *)ELEMENT_IMPORTABLE, NULL);
246 
247 			error = zjni_ipool_iter(
248 			    argc, argv, add_pool_to_xml, &importable);
249 		}
250 
251 		if (!error) {
252 			/* Print out XML */
253 			(void) xmlDocFormatDump(stdout, doc, 1);
254 		}
255 
256 		xmlFreeDoc(doc);
257 	}
258 
259 	return (error != 0);
260 }
261