1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2010 Alexander Motin <mav@FreeBSD.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include <sys/param.h>
30 #include <sys/systm.h>
31 #include <sys/kernel.h>
32 #include <sys/module.h>
33 #include <sys/lock.h>
34 #include <sys/mutex.h>
35 #include <sys/bio.h>
36 #include <sys/sysctl.h>
37 #include <sys/malloc.h>
38 #include <sys/bitstring.h>
39 #include <vm/uma.h>
40 #include <machine/atomic.h>
41 #include <geom/geom.h>
42 #include <sys/proc.h>
43 #include <sys/kthread.h>
44 #include <geom/raid/g_raid.h>
45 #include "g_raid_md_if.h"
46
47 static struct g_raid_softc *
g_raid_find_node(struct g_class * mp,const char * name)48 g_raid_find_node(struct g_class *mp, const char *name)
49 {
50 struct g_raid_softc *sc;
51 struct g_geom *gp;
52 struct g_provider *pp;
53 struct g_raid_volume *vol;
54
55 /* Look for geom with specified name. */
56 LIST_FOREACH(gp, &mp->geom, geom) {
57 sc = gp->softc;
58 if (sc == NULL)
59 continue;
60 if (sc->sc_stopping != 0)
61 continue;
62 if (strcasecmp(sc->sc_name, name) == 0)
63 return (sc);
64 }
65
66 /* Look for provider with specified name. */
67 LIST_FOREACH(gp, &mp->geom, geom) {
68 sc = gp->softc;
69 if (sc == NULL)
70 continue;
71 if (sc->sc_stopping != 0)
72 continue;
73 LIST_FOREACH(pp, &gp->provider, provider) {
74 if (strcmp(pp->name, name) == 0)
75 return (sc);
76 if (strncmp(pp->name, "raid/", 5) == 0 &&
77 strcmp(pp->name + 5, name) == 0)
78 return (sc);
79 }
80 }
81
82 /* Look for volume with specified name. */
83 LIST_FOREACH(gp, &mp->geom, geom) {
84 sc = gp->softc;
85 if (sc == NULL)
86 continue;
87 if (sc->sc_stopping != 0)
88 continue;
89 TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
90 if (strcmp(vol->v_name, name) == 0)
91 return (sc);
92 }
93 }
94 return (NULL);
95 }
96
97 static void
g_raid_ctl_label(struct gctl_req * req,struct g_class * mp)98 g_raid_ctl_label(struct gctl_req *req, struct g_class *mp)
99 {
100 struct g_geom *geom;
101 struct g_raid_softc *sc;
102 const char *format;
103 int *nargs;
104 int crstatus, ctlstatus;
105 char buf[64];
106
107 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
108 if (nargs == NULL) {
109 gctl_error(req, "No '%s' argument.", "nargs");
110 return;
111 }
112 if (*nargs < 4) {
113 gctl_error(req, "Invalid number of arguments.");
114 return;
115 }
116 format = gctl_get_asciiparam(req, "arg0");
117 if (format == NULL) {
118 gctl_error(req, "No format received.");
119 return;
120 }
121 crstatus = g_raid_create_node_format(format, req, &geom);
122 if (crstatus == G_RAID_MD_TASTE_FAIL) {
123 gctl_error(req, "Failed to create array with format '%s'.",
124 format);
125 return;
126 }
127 sc = (struct g_raid_softc *)geom->softc;
128 g_topology_unlock();
129 sx_xlock(&sc->sc_lock);
130 ctlstatus = G_RAID_MD_CTL(sc->sc_md, req);
131 if (ctlstatus < 0) {
132 gctl_error(req, "Command failed: %d.", ctlstatus);
133 if (crstatus == G_RAID_MD_TASTE_NEW)
134 g_raid_destroy_node(sc, 0);
135 } else {
136 if (crstatus == G_RAID_MD_TASTE_NEW)
137 snprintf(buf, sizeof(buf), "%s created\n", sc->sc_name);
138 else
139 snprintf(buf, sizeof(buf), "%s reused\n", sc->sc_name);
140 gctl_set_param_err(req, "output", buf, strlen(buf) + 1);
141 }
142 sx_xunlock(&sc->sc_lock);
143 g_topology_lock();
144 }
145
146 static void
g_raid_ctl_stop(struct gctl_req * req,struct g_class * mp)147 g_raid_ctl_stop(struct gctl_req *req, struct g_class *mp)
148 {
149 struct g_raid_softc *sc;
150 const char *nodename;
151 int *nargs, *force;
152 int error, how;
153
154 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
155 if (nargs == NULL) {
156 gctl_error(req, "No '%s' argument.", "nargs");
157 return;
158 }
159 if (*nargs != 1) {
160 gctl_error(req, "Invalid number of arguments.");
161 return;
162 }
163 nodename = gctl_get_asciiparam(req, "arg0");
164 if (nodename == NULL) {
165 gctl_error(req, "No array name received.");
166 return;
167 }
168 sc = g_raid_find_node(mp, nodename);
169 if (sc == NULL) {
170 gctl_error(req, "Array '%s' not found.", nodename);
171 return;
172 }
173 force = gctl_get_paraml(req, "force", sizeof(*force));
174 if (force != NULL && *force)
175 how = G_RAID_DESTROY_HARD;
176 else
177 how = G_RAID_DESTROY_SOFT;
178 g_topology_unlock();
179 sx_xlock(&sc->sc_lock);
180 error = g_raid_destroy(sc, how);
181 if (error != 0)
182 gctl_error(req, "Array is busy.");
183 g_topology_lock();
184 }
185
186 static void
g_raid_ctl_other(struct gctl_req * req,struct g_class * mp)187 g_raid_ctl_other(struct gctl_req *req, struct g_class *mp)
188 {
189 struct g_raid_softc *sc;
190 const char *nodename;
191 int *nargs;
192 int ctlstatus;
193
194 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
195 if (nargs == NULL) {
196 gctl_error(req, "No '%s' argument.", "nargs");
197 return;
198 }
199 if (*nargs < 1) {
200 gctl_error(req, "Invalid number of arguments.");
201 return;
202 }
203 nodename = gctl_get_asciiparam(req, "arg0");
204 if (nodename == NULL) {
205 gctl_error(req, "No array name received.");
206 return;
207 }
208 sc = g_raid_find_node(mp, nodename);
209 if (sc == NULL) {
210 gctl_error(req, "Array '%s' not found.", nodename);
211 return;
212 }
213 g_topology_unlock();
214 sx_xlock(&sc->sc_lock);
215 if (sc->sc_md != NULL) {
216 ctlstatus = G_RAID_MD_CTL(sc->sc_md, req);
217 if (ctlstatus < 0)
218 gctl_error(req, "Command failed: %d.", ctlstatus);
219 }
220 sx_xunlock(&sc->sc_lock);
221 g_topology_lock();
222 }
223
224 void
g_raid_ctl(struct gctl_req * req,struct g_class * mp,const char * verb)225 g_raid_ctl(struct gctl_req *req, struct g_class *mp, const char *verb)
226 {
227 uint32_t *version;
228
229 g_topology_assert();
230
231 version = gctl_get_paraml(req, "version", sizeof(*version));
232 if (version == NULL) {
233 gctl_error(req, "No '%s' argument.", "version");
234 return;
235 }
236 if (*version != G_RAID_VERSION) {
237 gctl_error(req, "Userland and kernel parts are out of sync.");
238 return;
239 }
240
241 if (strcmp(verb, "label") == 0)
242 g_raid_ctl_label(req, mp);
243 else if (strcmp(verb, "stop") == 0)
244 g_raid_ctl_stop(req, mp);
245 else
246 g_raid_ctl_other(req, mp);
247 }
248