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/cdefs.h> 30 #include <sys/param.h> 31 #include <sys/systm.h> 32 #include <sys/kernel.h> 33 #include <sys/module.h> 34 #include <sys/lock.h> 35 #include <sys/mutex.h> 36 #include <sys/bio.h> 37 #include <sys/sysctl.h> 38 #include <sys/malloc.h> 39 #include <sys/bitstring.h> 40 #include <vm/uma.h> 41 #include <machine/atomic.h> 42 #include <geom/geom.h> 43 #include <sys/proc.h> 44 #include <sys/kthread.h> 45 #include <geom/raid/g_raid.h> 46 #include "g_raid_md_if.h" 47 48 static struct g_raid_softc * 49 g_raid_find_node(struct g_class *mp, const char *name) 50 { 51 struct g_raid_softc *sc; 52 struct g_geom *gp; 53 struct g_provider *pp; 54 struct g_raid_volume *vol; 55 56 /* Look for geom with specified name. */ 57 LIST_FOREACH(gp, &mp->geom, geom) { 58 sc = gp->softc; 59 if (sc == NULL) 60 continue; 61 if (sc->sc_stopping != 0) 62 continue; 63 if (strcasecmp(sc->sc_name, name) == 0) 64 return (sc); 65 } 66 67 /* Look for provider with specified name. */ 68 LIST_FOREACH(gp, &mp->geom, geom) { 69 sc = gp->softc; 70 if (sc == NULL) 71 continue; 72 if (sc->sc_stopping != 0) 73 continue; 74 LIST_FOREACH(pp, &gp->provider, provider) { 75 if (strcmp(pp->name, name) == 0) 76 return (sc); 77 if (strncmp(pp->name, "raid/", 5) == 0 && 78 strcmp(pp->name + 5, name) == 0) 79 return (sc); 80 } 81 } 82 83 /* Look for volume with specified name. */ 84 LIST_FOREACH(gp, &mp->geom, geom) { 85 sc = gp->softc; 86 if (sc == NULL) 87 continue; 88 if (sc->sc_stopping != 0) 89 continue; 90 TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) { 91 if (strcmp(vol->v_name, name) == 0) 92 return (sc); 93 } 94 } 95 return (NULL); 96 } 97 98 static void 99 g_raid_ctl_label(struct gctl_req *req, struct g_class *mp) 100 { 101 struct g_geom *geom; 102 struct g_raid_softc *sc; 103 const char *format; 104 int *nargs; 105 int crstatus, ctlstatus; 106 char buf[64]; 107 108 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 109 if (nargs == NULL) { 110 gctl_error(req, "No '%s' argument.", "nargs"); 111 return; 112 } 113 if (*nargs < 4) { 114 gctl_error(req, "Invalid number of arguments."); 115 return; 116 } 117 format = gctl_get_asciiparam(req, "arg0"); 118 if (format == NULL) { 119 gctl_error(req, "No format received."); 120 return; 121 } 122 crstatus = g_raid_create_node_format(format, req, &geom); 123 if (crstatus == G_RAID_MD_TASTE_FAIL) { 124 gctl_error(req, "Failed to create array with format '%s'.", 125 format); 126 return; 127 } 128 sc = (struct g_raid_softc *)geom->softc; 129 g_topology_unlock(); 130 sx_xlock(&sc->sc_lock); 131 ctlstatus = G_RAID_MD_CTL(sc->sc_md, req); 132 if (ctlstatus < 0) { 133 gctl_error(req, "Command failed: %d.", ctlstatus); 134 if (crstatus == G_RAID_MD_TASTE_NEW) 135 g_raid_destroy_node(sc, 0); 136 } else { 137 if (crstatus == G_RAID_MD_TASTE_NEW) 138 snprintf(buf, sizeof(buf), "%s created\n", sc->sc_name); 139 else 140 snprintf(buf, sizeof(buf), "%s reused\n", sc->sc_name); 141 gctl_set_param_err(req, "output", buf, strlen(buf) + 1); 142 } 143 sx_xunlock(&sc->sc_lock); 144 g_topology_lock(); 145 } 146 147 static void 148 g_raid_ctl_stop(struct gctl_req *req, struct g_class *mp) 149 { 150 struct g_raid_softc *sc; 151 const char *nodename; 152 int *nargs, *force; 153 int error, how; 154 155 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 156 if (nargs == NULL) { 157 gctl_error(req, "No '%s' argument.", "nargs"); 158 return; 159 } 160 if (*nargs != 1) { 161 gctl_error(req, "Invalid number of arguments."); 162 return; 163 } 164 nodename = gctl_get_asciiparam(req, "arg0"); 165 if (nodename == NULL) { 166 gctl_error(req, "No array name received."); 167 return; 168 } 169 sc = g_raid_find_node(mp, nodename); 170 if (sc == NULL) { 171 gctl_error(req, "Array '%s' not found.", nodename); 172 return; 173 } 174 force = gctl_get_paraml(req, "force", sizeof(*force)); 175 if (force != NULL && *force) 176 how = G_RAID_DESTROY_HARD; 177 else 178 how = G_RAID_DESTROY_SOFT; 179 g_topology_unlock(); 180 sx_xlock(&sc->sc_lock); 181 error = g_raid_destroy(sc, how); 182 if (error != 0) 183 gctl_error(req, "Array is busy."); 184 g_topology_lock(); 185 } 186 187 static void 188 g_raid_ctl_other(struct gctl_req *req, struct g_class *mp) 189 { 190 struct g_raid_softc *sc; 191 const char *nodename; 192 int *nargs; 193 int ctlstatus; 194 195 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 196 if (nargs == NULL) { 197 gctl_error(req, "No '%s' argument.", "nargs"); 198 return; 199 } 200 if (*nargs < 1) { 201 gctl_error(req, "Invalid number of arguments."); 202 return; 203 } 204 nodename = gctl_get_asciiparam(req, "arg0"); 205 if (nodename == NULL) { 206 gctl_error(req, "No array name received."); 207 return; 208 } 209 sc = g_raid_find_node(mp, nodename); 210 if (sc == NULL) { 211 gctl_error(req, "Array '%s' not found.", nodename); 212 return; 213 } 214 g_topology_unlock(); 215 sx_xlock(&sc->sc_lock); 216 if (sc->sc_md != NULL) { 217 ctlstatus = G_RAID_MD_CTL(sc->sc_md, req); 218 if (ctlstatus < 0) 219 gctl_error(req, "Command failed: %d.", ctlstatus); 220 } 221 sx_xunlock(&sc->sc_lock); 222 g_topology_lock(); 223 } 224 225 void 226 g_raid_ctl(struct gctl_req *req, struct g_class *mp, const char *verb) 227 { 228 uint32_t *version; 229 230 g_topology_assert(); 231 232 version = gctl_get_paraml(req, "version", sizeof(*version)); 233 if (version == NULL) { 234 gctl_error(req, "No '%s' argument.", "version"); 235 return; 236 } 237 if (*version != G_RAID_VERSION) { 238 gctl_error(req, "Userland and kernel parts are out of sync."); 239 return; 240 } 241 242 if (strcmp(verb, "label") == 0) 243 g_raid_ctl_label(req, mp); 244 else if (strcmp(verb, "stop") == 0) 245 g_raid_ctl_stop(req, mp); 246 else 247 g_raid_ctl_other(req, mp); 248 } 249