1 /* 2 * Copyright (c) 1980, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#) Copyright (c) 1980, 1993 The Regents of the University of California. All rights reserved. 34 * @(#)swapon.c 8.1 (Berkeley) 6/5/93 35 * $FreeBSD: src/sbin/swapon/swapon.c,v 1.8.2.2 2001/07/30 10:30:11 dd Exp $ 36 * $DragonFly: src/sbin/swapon/swapon.c,v 1.4 2003/11/01 17:16:02 drhodus Exp $ 37 */ 38 39 #include <err.h> 40 #include <errno.h> 41 #include <fstab.h> 42 #include <stdio.h> 43 #include <stdlib.h> 44 #include <string.h> 45 #include <unistd.h> 46 47 static void usage(void); 48 int add(char *name, int ignoreebusy); 49 50 int 51 main(int argc, char **argv) 52 { 53 register struct fstab *fsp; 54 register int stat; 55 int ch, doall; 56 57 doall = 0; 58 while ((ch = getopt(argc, argv, "a")) != -1) 59 switch((char)ch) { 60 case 'a': 61 doall = 1; 62 break; 63 case '?': 64 default: 65 usage(); 66 } 67 argv += optind; 68 69 stat = 0; 70 if (doall) 71 while ((fsp = getfsent()) != NULL) { 72 if (strcmp(fsp->fs_type, FSTAB_SW)) 73 continue; 74 if (strstr(fsp->fs_mntops, "noauto")) 75 continue; 76 if (add(fsp->fs_spec, 1)) 77 stat = 1; 78 else 79 printf("swapon: adding %s as swap device\n", 80 fsp->fs_spec); 81 } 82 else if (!*argv) 83 usage(); 84 for (; *argv; ++argv) 85 stat |= add(*argv, 0); 86 exit(stat); 87 } 88 89 int 90 add(char *name, int ignoreebusy) 91 { 92 if (swapon(name) == -1) { 93 switch (errno) { 94 case EBUSY: 95 if (!ignoreebusy) 96 warnx("%s: device already in use", name); 97 break; 98 default: 99 warn("%s", name); 100 break; 101 } 102 return(1); 103 } 104 return(0); 105 } 106 107 static void 108 usage(void) 109 { 110 fprintf(stderr, "usage: swapon [-a] [special_file ...]\n"); 111 exit(1); 112 } 113