1 /*- 2 * Copyright (c) 2005 Chris Jones 3 * All rights reserved. 4 * 5 * This software was developed for the FreeBSD Project by Chris Jones 6 * thanks to the support of Google's Summer of Code program and 7 * mentoring by Lukas Ertl. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 */ 31 32 #include <sys/cdefs.h> 33 __FBSDID("$FreeBSD$"); 34 35 #include <sys/param.h> 36 #include <sys/libkern.h> 37 #include <sys/malloc.h> 38 39 #include <geom/geom.h> 40 #include <geom/vinum/geom_vinum_var.h> 41 #include <geom/vinum/geom_vinum.h> 42 43 void 44 gv_rename(struct g_geom *gp, struct gctl_req *req) 45 { 46 struct gv_softc *sc; 47 struct gv_volume *v; 48 struct gv_plex *p; 49 struct gv_sd *s; 50 struct gv_drive *d; 51 char *newname, *object, *name; 52 int *flags, type; 53 54 sc = gp->softc; 55 56 flags = gctl_get_paraml(req, "flags", sizeof(*flags)); 57 if (flags == NULL) { 58 gctl_error(req, "no flags given"); 59 return; 60 } 61 62 newname = gctl_get_param(req, "newname", NULL); 63 if (newname == NULL) { 64 gctl_error(req, "no new name given"); 65 return; 66 } 67 68 object = gctl_get_param(req, "object", NULL); 69 if (object == NULL) { 70 gctl_error(req, "no object given"); 71 return; 72 } 73 74 type = gv_object_type(sc, object); 75 switch (type) { 76 case GV_TYPE_VOL: 77 v = gv_find_vol(sc, object); 78 if (v == NULL) { 79 gctl_error(req, "unknown volume '%s'", object); 80 return; 81 } 82 name = g_malloc(GV_MAXVOLNAME, M_WAITOK | M_ZERO); 83 strlcpy(name, newname, GV_MAXVOLNAME); 84 gv_post_event(sc, GV_EVENT_RENAME_VOL, v, name, *flags, 0); 85 break; 86 case GV_TYPE_PLEX: 87 p = gv_find_plex(sc, object); 88 if (p == NULL) { 89 gctl_error(req, "unknown plex '%s'", object); 90 return; 91 } 92 name = g_malloc(GV_MAXPLEXNAME, M_WAITOK | M_ZERO); 93 strlcpy(name, newname, GV_MAXPLEXNAME); 94 gv_post_event(sc, GV_EVENT_RENAME_PLEX, p, name, *flags, 0); 95 break; 96 case GV_TYPE_SD: 97 s = gv_find_sd(sc, object); 98 if (s == NULL) { 99 gctl_error(req, "unknown subdisk '%s'", object); 100 return; 101 } 102 name = g_malloc(GV_MAXSDNAME, M_WAITOK | M_ZERO); 103 strlcpy(name, newname, GV_MAXSDNAME); 104 gv_post_event(sc, GV_EVENT_RENAME_SD, s, name, *flags, 0); 105 break; 106 case GV_TYPE_DRIVE: 107 d = gv_find_drive(sc, object); 108 if (d == NULL) { 109 gctl_error(req, "unknown drive '%s'", object); 110 return; 111 } 112 name = g_malloc(GV_MAXDRIVENAME, M_WAITOK | M_ZERO); 113 strlcpy(name, newname, GV_MAXDRIVENAME); 114 gv_post_event(sc, GV_EVENT_RENAME_DRIVE, d, name, *flags, 0); 115 break; 116 default: 117 gctl_error(req, "unknown object '%s'", object); 118 return; 119 } 120 } 121 122 int 123 gv_rename_drive(struct gv_softc *sc, struct gv_drive *d, char *newname, 124 int flags) 125 { 126 struct gv_sd *s; 127 128 KASSERT(d != NULL, ("gv_rename_drive: NULL d")); 129 130 if (gv_object_type(sc, newname) != GV_ERR_NOTFOUND) { 131 G_VINUM_DEBUG(1, "drive name '%s' already in use", newname); 132 return (GV_ERR_NAMETAKEN); 133 } 134 135 strlcpy(d->name, newname, sizeof(d->name)); 136 if (d->hdr != NULL) 137 strlcpy(d->hdr->label.name, newname, sizeof(d->hdr->label.name)); 138 139 LIST_FOREACH(s, &d->subdisks, from_drive) 140 strlcpy(s->drive, d->name, sizeof(s->drive)); 141 142 return (0); 143 } 144 145 int 146 gv_rename_plex(struct gv_softc *sc, struct gv_plex *p, char *newname, int flags) 147 { 148 char newsd[GV_MAXSDNAME]; 149 struct gv_sd *s; 150 char *ptr; 151 int err; 152 153 KASSERT(p != NULL, ("gv_rename_plex: NULL p")); 154 155 if (gv_object_type(sc, newname) != GV_ERR_NOTFOUND) { 156 G_VINUM_DEBUG(1, "plex name '%s' already in use", newname); 157 return (GV_ERR_NAMETAKEN); 158 } 159 160 /* 161 * Locate the plex number part of the plex names. 162 * XXX: might be a good idea to sanitize input a bit more 163 */ 164 ptr = strrchr(newname, '.'); 165 if (ptr == NULL) { 166 G_VINUM_DEBUG(0, "proposed plex name '%s' is not a valid plex " 167 "name", newname); 168 return (GV_ERR_INVNAME); 169 } 170 171 strlcpy(p->name, newname, sizeof(p->name)); 172 173 /* Fix up references and potentially rename subdisks. */ 174 LIST_FOREACH(s, &p->subdisks, in_plex) { 175 strlcpy(s->plex, p->name, sizeof(s->plex)); 176 if (flags & GV_FLAG_R) { 177 /* 178 * Look for the two last dots in the string, and assume 179 * that the old value was ok. 180 */ 181 ptr = strrchr(s->name, '.'); 182 if (ptr == NULL) 183 return (GV_ERR_INVNAME); 184 ptr++; 185 snprintf(newsd, sizeof(newsd), "%s.%s", p->name, ptr); 186 err = gv_rename_sd(sc, s, newsd, flags); 187 if (err) 188 return (err); 189 } 190 } 191 return (0); 192 } 193 194 /* 195 * gv_rename_sd: renames a subdisk. Note that the 'flags' argument is ignored, 196 * since there are no structures below a subdisk. Similarly, we don't have to 197 * clean up any references elsewhere to the subdisk's name. 198 */ 199 int 200 gv_rename_sd(struct gv_softc *sc, struct gv_sd *s, char *newname, int flags) 201 { 202 char *dot1, *dot2; 203 204 KASSERT(s != NULL, ("gv_rename_sd: NULL s")); 205 206 if (gv_object_type(sc, newname) != GV_ERR_NOTFOUND) { 207 G_VINUM_DEBUG(1, "subdisk name %s already in use", newname); 208 return (GV_ERR_NAMETAKEN); 209 } 210 211 /* Locate the sd number part of the sd names. */ 212 dot1 = strchr(newname, '.'); 213 if (dot1 == NULL || (dot2 = strchr(dot1 + 1, '.')) == NULL) { 214 G_VINUM_DEBUG(0, "proposed sd name '%s' is not a valid sd name", 215 newname); 216 return (GV_ERR_INVNAME); 217 } 218 strlcpy(s->name, newname, sizeof(s->name)); 219 return (0); 220 } 221 222 int 223 gv_rename_vol(struct gv_softc *sc, struct gv_volume *v, char *newname, 224 int flags) 225 { 226 struct g_provider *pp; 227 struct gv_plex *p; 228 char newplex[GV_MAXPLEXNAME], *ptr; 229 int err; 230 231 KASSERT(v != NULL, ("gv_rename_vol: NULL v")); 232 pp = v->provider; 233 KASSERT(pp != NULL, ("gv_rename_vol: NULL pp")); 234 235 if (gv_object_type(sc, newname) != GV_ERR_NOTFOUND) { 236 G_VINUM_DEBUG(1, "volume name %s already in use", newname); 237 return (GV_ERR_NAMETAKEN); 238 } 239 240 /* Rename the volume. */ 241 strlcpy(v->name, newname, sizeof(v->name)); 242 243 /* Fix up references and potentially rename plexes. */ 244 LIST_FOREACH(p, &v->plexes, in_volume) { 245 strlcpy(p->volume, v->name, sizeof(p->volume)); 246 if (flags & GV_FLAG_R) { 247 /* 248 * Look for the last dot in the string, and assume that 249 * the old value was ok. 250 */ 251 ptr = strrchr(p->name, '.'); 252 ptr++; 253 snprintf(newplex, sizeof(newplex), "%s.%s", v->name, ptr); 254 err = gv_rename_plex(sc, p, newplex, flags); 255 if (err) 256 return (err); 257 } 258 } 259 260 return (0); 261 } 262