swapon.c revision 6661
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. 321558Srgrimes */ 331558Srgrimes 341558Srgrimes#ifndef lint 351558Srgrimesstatic char copyright[] = 361558Srgrimes"@(#) Copyright (c) 1980, 1993\n\ 371558Srgrimes The Regents of the University of California. All rights reserved.\n"; 381558Srgrimes#endif /* not lint */ 391558Srgrimes 401558Srgrimes#ifndef lint 411558Srgrimesstatic char sccsid[] = "@(#)swapon.c 8.1 (Berkeley) 6/5/93"; 421558Srgrimes#endif /* not lint */ 431558Srgrimes 441558Srgrimes#include <fstab.h> 451558Srgrimes#include <errno.h> 461558Srgrimes#include <stdio.h> 476661Sphk#include <stdlib.h> 486661Sphk#include <unistd.h> 491558Srgrimes 506661Sphkvoid usage __P((void)); 516661Sphkint add __P((char *name, int ignoreebusy)); 526661Sphk 536661Sphkint 546661Sphkmain(int argc, char **argv) 551558Srgrimes{ 561558Srgrimes extern char *optarg; 571558Srgrimes extern int optind; 581558Srgrimes register struct fstab *fsp; 591558Srgrimes register int stat; 601558Srgrimes int ch, doall; 611558Srgrimes 621558Srgrimes doall = 0; 631558Srgrimes while ((ch = getopt(argc, argv, "a")) != EOF) 641558Srgrimes switch((char)ch) { 651558Srgrimes case 'a': 661558Srgrimes doall = 1; 671558Srgrimes break; 681558Srgrimes case '?': 691558Srgrimes default: 701558Srgrimes usage(); 711558Srgrimes } 721558Srgrimes argv += optind; 731558Srgrimes 741558Srgrimes stat = 0; 751558Srgrimes if (doall) 766661Sphk while ((fsp = getfsent()) != NULL) { 771558Srgrimes if (strcmp(fsp->fs_type, FSTAB_SW)) 781558Srgrimes continue; 791558Srgrimes if (add(fsp->fs_spec, 1)) 801558Srgrimes stat = 1; 811558Srgrimes else 821558Srgrimes printf("swapon: adding %s as swap device\n", 831558Srgrimes fsp->fs_spec); 841558Srgrimes } 851558Srgrimes else if (!*argv) 861558Srgrimes usage(); 871558Srgrimes for (; *argv; ++argv) 881558Srgrimes stat |= add(*argv, 0); 891558Srgrimes exit(stat); 901558Srgrimes} 911558Srgrimes 926661Sphkint 936661Sphkadd(char *name, int ignoreebusy) 941558Srgrimes{ 951558Srgrimes extern int errno; 961558Srgrimes 971558Srgrimes if (swapon(name) == -1) { 981558Srgrimes switch (errno) { 991558Srgrimes case EINVAL: 1001558Srgrimes fprintf(stderr, "swapon: %s: device not configured\n", 1011558Srgrimes name); 1021558Srgrimes break; 1031558Srgrimes case EBUSY: 1041558Srgrimes if (!ignoreebusy) 1051558Srgrimes fprintf(stderr, 1061558Srgrimes "swapon: %s: device already in use\n", 1071558Srgrimes name); 1081558Srgrimes break; 1091558Srgrimes default: 1101558Srgrimes fprintf(stderr, "swapon: %s: ", name); 1111558Srgrimes perror((char *)NULL); 1121558Srgrimes break; 1131558Srgrimes } 1141558Srgrimes return(1); 1151558Srgrimes } 1161558Srgrimes return(0); 1171558Srgrimes} 1181558Srgrimes 1196661Sphkvoid 1201558Srgrimesusage() 1211558Srgrimes{ 1221558Srgrimes fprintf(stderr, "usage: swapon [-a] [special_file ...]\n"); 1231558Srgrimes exit(1); 1241558Srgrimes} 125