swapon.c revision 26740
11558Srgrimes/* 21558Srgrimes * Copyright (c) 1980, 1993 31558Srgrimes * The Regents of the University of California. All rights reserved. 41558Srgrimes * 51558Srgrimes * Redistribution and use in source and binary forms, with or without 61558Srgrimes * modification, are permitted provided that the following conditions 71558Srgrimes * are met: 81558Srgrimes * 1. Redistributions of source code must retain the above copyright 91558Srgrimes * notice, this list of conditions and the following disclaimer. 101558Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111558Srgrimes * notice, this list of conditions and the following disclaimer in the 121558Srgrimes * documentation and/or other materials provided with the distribution. 131558Srgrimes * 3. All advertising materials mentioning features or use of this software 141558Srgrimes * must display the following acknowledgement: 151558Srgrimes * This product includes software developed by the University of 161558Srgrimes * California, Berkeley and its contributors. 171558Srgrimes * 4. Neither the name of the University nor the names of its contributors 181558Srgrimes * may be used to endorse or promote products derived from this software 191558Srgrimes * without specific prior written permission. 201558Srgrimes * 211558Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 221558Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 231558Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 241558Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 251558Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 261558Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 271558Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 281558Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 291558Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 301558Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 311558Srgrimes * SUCH DAMAGE. 3226740Scharnier * 3326740Scharnier * $Id$ 341558Srgrimes */ 351558Srgrimes 361558Srgrimes#ifndef lint 371558Srgrimesstatic char copyright[] = 381558Srgrimes"@(#) Copyright (c) 1980, 1993\n\ 391558Srgrimes The Regents of the University of California. All rights reserved.\n"; 401558Srgrimes#endif /* not lint */ 411558Srgrimes 421558Srgrimes#ifndef lint 431558Srgrimesstatic char sccsid[] = "@(#)swapon.c 8.1 (Berkeley) 6/5/93"; 441558Srgrimes#endif /* not lint */ 451558Srgrimes 461558Srgrimes#include <fstab.h> 471558Srgrimes#include <errno.h> 481558Srgrimes#include <stdio.h> 496661Sphk#include <stdlib.h> 506661Sphk#include <unistd.h> 5126740Scharnier#include <string.h> 5226740Scharnier#include <err.h> 531558Srgrimes 5426740Scharnierstatic void usage __P((void)); 556661Sphkint add __P((char *name, int ignoreebusy)); 566661Sphk 576661Sphkint 586661Sphkmain(int argc, char **argv) 591558Srgrimes{ 601558Srgrimes extern char *optarg; 611558Srgrimes extern int optind; 621558Srgrimes register struct fstab *fsp; 631558Srgrimes register int stat; 641558Srgrimes int ch, doall; 651558Srgrimes 661558Srgrimes doall = 0; 6724359Simp while ((ch = getopt(argc, argv, "a")) != -1) 681558Srgrimes switch((char)ch) { 691558Srgrimes case 'a': 701558Srgrimes doall = 1; 711558Srgrimes break; 721558Srgrimes case '?': 731558Srgrimes default: 741558Srgrimes usage(); 751558Srgrimes } 761558Srgrimes argv += optind; 771558Srgrimes 781558Srgrimes stat = 0; 791558Srgrimes if (doall) 806661Sphk while ((fsp = getfsent()) != NULL) { 811558Srgrimes if (strcmp(fsp->fs_type, FSTAB_SW)) 821558Srgrimes continue; 8318073Sjkh if (strstr(fsp->fs_mntops, "noauto")) 8418073Sjkh continue; 851558Srgrimes if (add(fsp->fs_spec, 1)) 861558Srgrimes stat = 1; 871558Srgrimes else 881558Srgrimes printf("swapon: adding %s as swap device\n", 891558Srgrimes fsp->fs_spec); 901558Srgrimes } 911558Srgrimes else if (!*argv) 921558Srgrimes usage(); 931558Srgrimes for (; *argv; ++argv) 941558Srgrimes stat |= add(*argv, 0); 951558Srgrimes exit(stat); 961558Srgrimes} 971558Srgrimes 986661Sphkint 996661Sphkadd(char *name, int ignoreebusy) 1001558Srgrimes{ 1011558Srgrimes extern int errno; 1021558Srgrimes 1031558Srgrimes if (swapon(name) == -1) { 1041558Srgrimes switch (errno) { 1051558Srgrimes case EBUSY: 1061558Srgrimes if (!ignoreebusy) 10726740Scharnier warnx("%s: device already in use", name); 1081558Srgrimes break; 1091558Srgrimes default: 11026740Scharnier warn("%s", name); 1111558Srgrimes break; 1121558Srgrimes } 1131558Srgrimes return(1); 1141558Srgrimes } 1151558Srgrimes return(0); 1161558Srgrimes} 1171558Srgrimes 11826740Scharnierstatic void 1191558Srgrimesusage() 1201558Srgrimes{ 1211558Srgrimes fprintf(stderr, "usage: swapon [-a] [special_file ...]\n"); 1221558Srgrimes exit(1); 1231558Srgrimes} 124