umount.c revision 1.28.2.2
1 1.28.2.2 fvdl /* $NetBSD: umount.c,v 1.28.2.2 2000/06/20 00:45:25 fvdl Exp $ */ 2 1.28.2.2 fvdl 3 1.28.2.2 fvdl /*- 4 1.28.2.2 fvdl * Copyright (c) 1980, 1989, 1993 5 1.28.2.2 fvdl * The Regents of the University of California. All rights reserved. 6 1.28.2.2 fvdl * 7 1.28.2.2 fvdl * Redistribution and use in source and binary forms, with or without 8 1.28.2.2 fvdl * modification, are permitted provided that the following conditions 9 1.28.2.2 fvdl * are met: 10 1.28.2.2 fvdl * 1. Redistributions of source code must retain the above copyright 11 1.28.2.2 fvdl * notice, this list of conditions and the following disclaimer. 12 1.28.2.2 fvdl * 2. Redistributions in binary form must reproduce the above copyright 13 1.28.2.2 fvdl * notice, this list of conditions and the following disclaimer in the 14 1.28.2.2 fvdl * documentation and/or other materials provided with the distribution. 15 1.28.2.2 fvdl * 3. All advertising materials mentioning features or use of this software 16 1.28.2.2 fvdl * must display the following acknowledgement: 17 1.28.2.2 fvdl * This product includes software developed by the University of 18 1.28.2.2 fvdl * California, Berkeley and its contributors. 19 1.28.2.2 fvdl * 4. Neither the name of the University nor the names of its contributors 20 1.28.2.2 fvdl * may be used to endorse or promote products derived from this software 21 1.28.2.2 fvdl * without specific prior written permission. 22 1.28.2.2 fvdl * 23 1.28.2.2 fvdl * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 1.28.2.2 fvdl * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 1.28.2.2 fvdl * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 1.28.2.2 fvdl * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 1.28.2.2 fvdl * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 1.28.2.2 fvdl * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 1.28.2.2 fvdl * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 1.28.2.2 fvdl * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 1.28.2.2 fvdl * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 1.28.2.2 fvdl * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 1.28.2.2 fvdl * SUCH DAMAGE. 34 1.28.2.2 fvdl */ 35 1.28.2.2 fvdl 36 1.28.2.2 fvdl #include <sys/cdefs.h> 37 1.28.2.2 fvdl #ifndef lint 38 1.28.2.2 fvdl __COPYRIGHT("@(#) Copyright (c) 1980, 1989, 1993\n\ 39 1.28.2.2 fvdl The Regents of the University of California. All rights reserved.\n"); 40 1.28.2.2 fvdl #endif /* not lint */ 41 1.28.2.2 fvdl 42 1.28.2.2 fvdl #ifndef lint 43 1.28.2.2 fvdl #if 0 44 1.28.2.2 fvdl static char sccsid[] = "@(#)umount.c 8.8 (Berkeley) 5/8/95"; 45 1.28.2.2 fvdl #else 46 1.28.2.2 fvdl __RCSID("$NetBSD: umount.c,v 1.28.2.2 2000/06/20 00:45:25 fvdl Exp $"); 47 1.28.2.2 fvdl #endif 48 1.28.2.2 fvdl #endif /* not lint */ 49 1.28.2.2 fvdl 50 1.28.2.2 fvdl #include <sys/param.h> 51 1.28.2.2 fvdl #include <sys/stat.h> 52 1.28.2.2 fvdl #include <sys/mount.h> 53 1.28.2.2 fvdl #include <sys/time.h> 54 1.28.2.2 fvdl #include <sys/socket.h> 55 1.28.2.2 fvdl 56 1.28.2.2 fvdl #include <netdb.h> 57 1.28.2.2 fvdl #include <rpc/rpc.h> 58 1.28.2.2 fvdl #include <rpc/pmap_clnt.h> 59 1.28.2.2 fvdl #include <rpc/pmap_prot.h> 60 1.28.2.2 fvdl #include <nfs/rpcv2.h> 61 1.28.2.2 fvdl 62 1.28.2.2 fvdl #include <err.h> 63 1.28.2.2 fvdl #include <fstab.h> 64 1.28.2.2 fvdl #include <stdio.h> 65 1.28.2.2 fvdl #include <stdlib.h> 66 1.28.2.2 fvdl #include <string.h> 67 1.28.2.2 fvdl #include <unistd.h> 68 1.28.2.2 fvdl 69 1.28.2.2 fvdl typedef enum { MNTANY, MNTON, MNTFROM } mntwhat; 70 1.28.2.2 fvdl 71 1.28.2.2 fvdl int fake, fflag, verbose, raw; 72 1.28.2.2 fvdl char *nfshost; 73 1.28.2.2 fvdl struct addrinfo *nfshost_ai = NULL; 74 1.28.2.2 fvdl 75 1.28.2.2 fvdl int checkvfsname __P((const char *, char **)); 76 1.28.2.2 fvdl char *getmntname __P((char *, mntwhat, char **)); 77 1.28.2.2 fvdl char **makevfslist __P((char *)); 78 1.28.2.2 fvdl int main __P((int, char *[])); 79 1.28.2.2 fvdl int namematch __P((struct addrinfo *)); 80 1.28.2.2 fvdl int sacmp __P((struct sockaddr *, struct sockaddr *)); 81 1.28.2.2 fvdl int selected __P((int)); 82 1.28.2.2 fvdl int umountfs __P((char *, char **)); 83 1.28.2.2 fvdl void usage __P((void)); 84 1.28.2.2 fvdl int xdr_dir __P((XDR *, char *)); 85 1.28.2.2 fvdl 86 1.28.2.2 fvdl int 87 1.28.2.2 fvdl main(argc, argv) 88 1.28.2.2 fvdl int argc; 89 1.28.2.2 fvdl char *argv[]; 90 1.28.2.2 fvdl { 91 1.28.2.2 fvdl int all, ch, errs, mnts; 92 1.28.2.2 fvdl char **typelist = NULL; 93 1.28.2.2 fvdl struct statfs *mntbuf; 94 1.28.2.2 fvdl struct addrinfo hints; 95 1.28.2.2 fvdl 96 1.28.2.2 fvdl /* Start disks transferring immediately. */ 97 1.28.2.2 fvdl sync(); 98 1.28.2.2 fvdl 99 1.28.2.2 fvdl all = 0; 100 1.28.2.2 fvdl while ((ch = getopt(argc, argv, "AaFfRh:t:v")) != -1) 101 1.28.2.2 fvdl switch (ch) { 102 1.28.2.2 fvdl case 'A': 103 1.28.2.2 fvdl case 'a': 104 1.28.2.2 fvdl all = 1; 105 1.28.2.2 fvdl break; 106 1.28.2.2 fvdl case 'F': 107 1.28.2.2 fvdl fake = 1; 108 1.28.2.2 fvdl break; 109 1.28.2.2 fvdl case 'f': 110 1.28.2.2 fvdl fflag = MNT_FORCE; 111 1.28.2.2 fvdl break; 112 1.28.2.2 fvdl case 'h': /* -h implies -A. */ 113 1.28.2.2 fvdl all = 1; 114 1.28.2.2 fvdl nfshost = optarg; 115 1.28.2.2 fvdl break; 116 1.28.2.2 fvdl case 'R': 117 1.28.2.2 fvdl raw = 1; 118 1.28.2.2 fvdl break; 119 1.28.2.2 fvdl case 't': 120 1.28.2.2 fvdl if (typelist != NULL) 121 1.28.2.2 fvdl errx(1, "only one -t option may be specified."); 122 1.28.2.2 fvdl typelist = makevfslist(optarg); 123 1.28.2.2 fvdl break; 124 1.28.2.2 fvdl case 'v': 125 1.28.2.2 fvdl verbose = 1; 126 1.28.2.2 fvdl break; 127 1.28.2.2 fvdl default: 128 1.28.2.2 fvdl usage(); 129 1.28.2.2 fvdl /* NOTREACHED */ 130 1.28.2.2 fvdl } 131 1.28.2.2 fvdl argc -= optind; 132 1.28.2.2 fvdl argv += optind; 133 1.28.2.2 fvdl 134 1.28.2.2 fvdl if ((argc == 0 && !all) || (argc != 0 && all) || (all && raw)) 135 1.28.2.2 fvdl usage(); 136 1.28.2.2 fvdl 137 1.28.2.2 fvdl /* -h implies "-t nfs" if no -t flag. */ 138 1.28.2.2 fvdl if ((nfshost != NULL) && (typelist == NULL)) 139 1.28.2.2 fvdl typelist = makevfslist("nfs"); 140 1.28.2.2 fvdl 141 1.28.2.2 fvdl if (nfshost != NULL) { 142 1.28.2.2 fvdl memset(&hints, 0, sizeof hints); 143 1.28.2.2 fvdl getaddrinfo(nfshost, NULL, &hints, &nfshost_ai); 144 1.28.2.2 fvdl } 145 1.28.2.2 fvdl 146 1.28.2.2 fvdl errs = 0; 147 1.28.2.2 fvdl if (all) { 148 1.28.2.2 fvdl if ((mnts = getmntinfo(&mntbuf, MNT_NOWAIT)) == 0) { 149 1.28.2.2 fvdl warn("getmntinfo"); 150 1.28.2.2 fvdl errs = 1; 151 1.28.2.2 fvdl } 152 1.28.2.2 fvdl for (errs = 0, mnts--; mnts > 0; mnts--) { 153 1.28.2.2 fvdl if (checkvfsname(mntbuf[mnts].f_fstypename, typelist)) 154 1.28.2.2 fvdl continue; 155 1.28.2.2 fvdl if (umountfs(mntbuf[mnts].f_mntonname, typelist) != 0) 156 1.28.2.2 fvdl errs = 1; 157 1.28.2.2 fvdl } 158 1.28.2.2 fvdl } else { 159 1.28.2.2 fvdl for (errs = 0; *argv != NULL; ++argv) 160 1.28.2.2 fvdl if (umountfs(*argv, typelist) != 0) 161 1.28.2.2 fvdl errs = 1; 162 1.28.2.2 fvdl } 163 1.28.2.2 fvdl exit(errs); 164 1.28.2.2 fvdl } 165 1.28.2.2 fvdl 166 1.28.2.2 fvdl int 167 1.28.2.2 fvdl umountfs(name, typelist) 168 1.28.2.2 fvdl char *name; 169 1.28.2.2 fvdl char **typelist; 170 1.28.2.2 fvdl { 171 1.28.2.2 fvdl enum clnt_stat clnt_stat; 172 1.28.2.2 fvdl struct stat sb; 173 1.28.2.2 fvdl struct timeval try; 174 1.28.2.2 fvdl CLIENT *clp; 175 1.28.2.2 fvdl char *type, *delimp, *hostp, *mntpt, rname[MAXPATHLEN]; 176 1.28.2.2 fvdl mntwhat what; 177 1.28.2.2 fvdl struct addrinfo *ai, hints; 178 1.28.2.2 fvdl 179 1.28.2.2 fvdl delimp = NULL; 180 1.28.2.2 fvdl 181 1.28.2.2 fvdl if (raw) { 182 1.28.2.2 fvdl mntpt = name; 183 1.28.2.2 fvdl } else { 184 1.28.2.2 fvdl 185 1.28.2.2 fvdl if (realpath(name, rname) == NULL) { 186 1.28.2.2 fvdl warn("%s", rname); 187 1.28.2.2 fvdl return (1); 188 1.28.2.2 fvdl } 189 1.28.2.2 fvdl 190 1.28.2.2 fvdl what = MNTANY; 191 1.28.2.2 fvdl mntpt = name = rname; 192 1.28.2.2 fvdl 193 1.28.2.2 fvdl if (stat(name, &sb) == 0) { 194 1.28.2.2 fvdl if (S_ISBLK(sb.st_mode)) 195 1.28.2.2 fvdl what = MNTON; 196 1.28.2.2 fvdl else if (S_ISDIR(sb.st_mode)) 197 1.28.2.2 fvdl what = MNTFROM; 198 1.28.2.2 fvdl } 199 1.28.2.2 fvdl 200 1.28.2.2 fvdl switch (what) { 201 1.28.2.2 fvdl case MNTON: 202 1.28.2.2 fvdl if ((mntpt = getmntname(name, MNTON, &type)) == NULL) { 203 1.28.2.2 fvdl warnx("%s: not currently mounted", name); 204 1.28.2.2 fvdl return (1); 205 1.28.2.2 fvdl } 206 1.28.2.2 fvdl break; 207 1.28.2.2 fvdl case MNTFROM: 208 1.28.2.2 fvdl if ((name = getmntname(mntpt, MNTFROM, &type)) == NULL) { 209 1.28.2.2 fvdl warnx("%s: not currently mounted", mntpt); 210 1.28.2.2 fvdl return (1); 211 1.28.2.2 fvdl } 212 1.28.2.2 fvdl break; 213 1.28.2.2 fvdl default: 214 1.28.2.2 fvdl if ((name = getmntname(mntpt, MNTFROM, &type)) == NULL) { 215 1.28.2.2 fvdl name = rname; 216 1.28.2.2 fvdl if ((mntpt = getmntname(name, MNTON, &type)) == NULL) { 217 1.28.2.2 fvdl warnx("%s: not currently mounted", name); 218 1.28.2.2 fvdl return (1); 219 1.28.2.2 fvdl } 220 1.28.2.2 fvdl } 221 1.28.2.2 fvdl } 222 1.28.2.2 fvdl 223 1.28.2.2 fvdl if (checkvfsname(type, typelist)) 224 1.28.2.2 fvdl return (1); 225 1.28.2.2 fvdl 226 1.28.2.2 fvdl memset(&hints, 0, sizeof hints); 227 1.28.2.2 fvdl ai = NULL; 228 1.28.2.2 fvdl if (!strncmp(type, MOUNT_NFS, MFSNAMELEN)) { 229 1.28.2.2 fvdl if ((delimp = strchr(name, '@')) != NULL) { 230 1.28.2.2 fvdl hostp = delimp + 1; 231 1.28.2.2 fvdl *delimp = '\0'; 232 1.28.2.2 fvdl getaddrinfo(hostp, NULL, &hints, &ai); 233 1.28.2.2 fvdl *delimp = '@'; 234 1.28.2.2 fvdl } else if ((delimp = strrchr(name, ':')) != NULL) { 235 1.28.2.2 fvdl *delimp = '\0'; 236 1.28.2.2 fvdl hostp = name; 237 1.28.2.2 fvdl getaddrinfo(hostp, NULL, &hints, &ai); 238 1.28.2.2 fvdl name = delimp + 1; 239 1.28.2.2 fvdl *delimp = ':'; 240 1.28.2.2 fvdl } 241 1.28.2.2 fvdl } 242 1.28.2.2 fvdl 243 1.28.2.2 fvdl if (!namematch(ai)) 244 1.28.2.2 fvdl return (1); 245 1.28.2.2 fvdl } 246 1.28.2.2 fvdl 247 1.28.2.2 fvdl if (verbose) 248 1.28.2.2 fvdl (void)printf("%s: unmount from %s\n", name, mntpt); 249 1.28.2.2 fvdl if (fake) 250 1.28.2.2 fvdl return (0); 251 1.28.2.2 fvdl 252 1.28.2.2 fvdl if (unmount(mntpt, fflag) < 0) { 253 1.28.2.2 fvdl warn("%s", mntpt); 254 1.28.2.2 fvdl return (1); 255 1.28.2.2 fvdl } 256 1.28.2.2 fvdl 257 1.28.2.2 fvdl if (!raw && !strncmp(type, MOUNT_NFS, MFSNAMELEN) && 258 1.28.2.2 fvdl (ai != NULL) && !(fflag & MNT_FORCE)) { 259 1.28.2.2 fvdl *delimp = '\0'; 260 1.28.2.2 fvdl clp = clnt_create(hostp, RPCPROG_MNT, RPCMNT_VER1, "udp"); 261 1.28.2.2 fvdl if (clp == NULL) { 262 1.28.2.2 fvdl clnt_pcreateerror("Cannot MNT PRC"); 263 1.28.2.2 fvdl return (1); 264 1.28.2.2 fvdl } 265 1.28.2.2 fvdl clp->cl_auth = authsys_create_default(); 266 1.28.2.2 fvdl try.tv_sec = 20; 267 1.28.2.2 fvdl try.tv_usec = 0; 268 1.28.2.2 fvdl clnt_stat = clnt_call(clp, 269 1.28.2.2 fvdl RPCMNT_UMOUNT, xdr_dir, name, xdr_void, (caddr_t)0, try); 270 1.28.2.2 fvdl if (clnt_stat != RPC_SUCCESS) { 271 1.28.2.2 fvdl clnt_perror(clp, "Bad MNT RPC"); 272 1.28.2.2 fvdl return (1); 273 1.28.2.2 fvdl } 274 1.28.2.2 fvdl auth_destroy(clp->cl_auth); 275 1.28.2.2 fvdl clnt_destroy(clp); 276 1.28.2.2 fvdl } 277 1.28.2.2 fvdl return (0); 278 1.28.2.2 fvdl } 279 1.28.2.2 fvdl 280 1.28.2.2 fvdl char * 281 1.28.2.2 fvdl getmntname(name, what, type) 282 1.28.2.2 fvdl char *name; 283 1.28.2.2 fvdl mntwhat what; 284 1.28.2.2 fvdl char **type; 285 1.28.2.2 fvdl { 286 1.28.2.2 fvdl static struct statfs *mntbuf; 287 1.28.2.2 fvdl static int mntsize; 288 1.28.2.2 fvdl int i; 289 1.28.2.2 fvdl 290 1.28.2.2 fvdl if (mntbuf == NULL && 291 1.28.2.2 fvdl (mntsize = getmntinfo(&mntbuf, MNT_NOWAIT)) == 0) { 292 1.28.2.2 fvdl warn("getmntinfo"); 293 1.28.2.2 fvdl return (NULL); 294 1.28.2.2 fvdl } 295 1.28.2.2 fvdl for (i = mntsize - 1; i >= 0; i--) { 296 1.28.2.2 fvdl if ((what == MNTON) && !strcmp(mntbuf[i].f_mntfromname, name)) { 297 1.28.2.2 fvdl if (type) 298 1.28.2.2 fvdl *type = mntbuf[i].f_fstypename; 299 1.28.2.2 fvdl return (mntbuf[i].f_mntonname); 300 1.28.2.2 fvdl } 301 1.28.2.2 fvdl if ((what == MNTFROM) && !strcmp(mntbuf[i].f_mntonname, name)) { 302 1.28.2.2 fvdl if (type) 303 1.28.2.2 fvdl *type = mntbuf[i].f_fstypename; 304 1.28.2.2 fvdl return (mntbuf[i].f_mntfromname); 305 1.28.2.2 fvdl } 306 1.28.2.2 fvdl } 307 1.28.2.2 fvdl return (NULL); 308 1.28.2.2 fvdl } 309 1.28.2.2 fvdl 310 1.28.2.2 fvdl int 311 1.28.2.2 fvdl sacmp(struct sockaddr *sa1, struct sockaddr *sa2) 312 1.28.2.2 fvdl { 313 1.28.2.2 fvdl void *p1, *p2; 314 1.28.2.2 fvdl int len; 315 1.28.2.2 fvdl 316 1.28.2.2 fvdl if (sa1->sa_family != sa2->sa_family) 317 1.28.2.2 fvdl return 1; 318 1.28.2.2 fvdl 319 1.28.2.2 fvdl switch (sa1->sa_family) { 320 1.28.2.2 fvdl case AF_INET: 321 1.28.2.2 fvdl p1 = &((struct sockaddr_in *)sa1)->sin_addr; 322 1.28.2.2 fvdl p2 = &((struct sockaddr_in *)sa2)->sin_addr; 323 1.28.2.2 fvdl len = 4; 324 1.28.2.2 fvdl break; 325 1.28.2.2 fvdl case AF_INET6: 326 1.28.2.2 fvdl p1 = &((struct sockaddr_in6 *)sa1)->sin6_addr; 327 1.28.2.2 fvdl p2 = &((struct sockaddr_in6 *)sa2)->sin6_addr; 328 1.28.2.2 fvdl len = 16; 329 1.28.2.2 fvdl if (((struct sockaddr_in6 *)sa1)->sin6_scope_id != 330 1.28.2.2 fvdl ((struct sockaddr_in6 *)sa2)->sin6_scope_id) 331 1.28.2.2 fvdl return 1; 332 1.28.2.2 fvdl break; 333 1.28.2.2 fvdl default: 334 1.28.2.2 fvdl return 1; 335 1.28.2.2 fvdl } 336 1.28.2.2 fvdl 337 1.28.2.2 fvdl return memcmp(p1, p2, len); 338 1.28.2.2 fvdl } 339 1.28.2.2 fvdl 340 1.28.2.2 fvdl int 341 1.28.2.2 fvdl namematch(ai) 342 1.28.2.2 fvdl struct addrinfo *ai; 343 1.28.2.2 fvdl { 344 1.28.2.2 fvdl struct addrinfo *aip; 345 1.28.2.2 fvdl 346 1.28.2.2 fvdl if (nfshost == NULL || nfshost_ai == NULL) 347 1.28.2.2 fvdl return (1); 348 1.28.2.2 fvdl 349 1.28.2.2 fvdl while (ai != NULL) { 350 1.28.2.2 fvdl aip = nfshost_ai; 351 1.28.2.2 fvdl while (aip != NULL) { 352 1.28.2.2 fvdl if (sacmp(ai->ai_addr, aip->ai_addr) == 0) 353 1.28.2.2 fvdl return 1; 354 1.28.2.2 fvdl aip = aip->ai_next; 355 1.28.2.2 fvdl } 356 1.28.2.2 fvdl ai = ai->ai_next; 357 1.28.2.2 fvdl } 358 1.28.2.2 fvdl 359 1.28.2.2 fvdl return 0; 360 1.28.2.2 fvdl } 361 1.28.2.2 fvdl 362 1.28.2.2 fvdl /* 363 1.28.2.2 fvdl * xdr routines for mount rpc's 364 1.28.2.2 fvdl */ 365 1.28.2.2 fvdl int 366 1.28.2.2 fvdl xdr_dir(xdrsp, dirp) 367 1.28.2.2 fvdl XDR *xdrsp; 368 1.28.2.2 fvdl char *dirp; 369 1.28.2.2 fvdl { 370 1.28.2.2 fvdl return (xdr_string(xdrsp, &dirp, RPCMNT_PATHLEN)); 371 1.28.2.2 fvdl } 372 1.28.2.2 fvdl 373 1.28.2.2 fvdl void 374 1.28.2.2 fvdl usage() 375 1.28.2.2 fvdl { 376 1.28.2.2 fvdl (void)fprintf(stderr, 377 1.28.2.2 fvdl "usage: %s\n %s\n", 378 1.28.2.2 fvdl "umount [-fvFR] [-t fstypelist] special | node", 379 1.28.2.2 fvdl "umount -a[fvF] [-h host] [-t fstypelist]"); 380 1.28.2.2 fvdl exit(1); 381 1.28.2.2 fvdl } 382
Indexes created Sun Oct 26 20:09:54 GMT 2025