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 * $Id$ 34 */ 35 36 #ifndef lint 37 static char copyright[] = 38 "@(#) Copyright (c) 1980, 1993\n\ 39 The Regents of the University of California. All rights reserved.\n"; 40 #endif /* not lint */ 41 42 #ifndef lint 43 static char sccsid[] = "@(#)swapon.c 8.1 (Berkeley) 6/5/93"; 44 #endif /* not lint */ 45 46 #include <fstab.h> 47 #include <errno.h> 48 #include <stdio.h> 49 #include <stdlib.h> 50 #include <unistd.h> 51 #include <string.h> 52 #include <err.h> 53 54 static void usage __P((void)); 55 int add __P((char *name, int ignoreebusy)); 56 57 int 58 main(int argc, char **argv) 59 { 60 extern char *optarg; 61 extern int optind; 62 register struct fstab *fsp; 63 register int stat; 64 int ch, doall; 65 66 doall = 0; 67 while ((ch = getopt(argc, argv, "a")) != -1) 68 switch((char)ch) { 69 case 'a': 70 doall = 1; 71 break; 72 case '?': 73 default: 74 usage(); 75 } 76 argv += optind; 77 78 stat = 0; 79 if (doall) 80 while ((fsp = getfsent()) != NULL) { 81 if (strcmp(fsp->fs_type, FSTAB_SW)) 82 continue; 83 if (strstr(fsp->fs_mntops, "noauto")) 84 continue; 85 if (add(fsp->fs_spec, 1)) 86 stat = 1; 87 else 88 printf("swapon: adding %s as swap device\n", 89 fsp->fs_spec); 90 } 91 else if (!*argv) 92 usage(); 93 for (; *argv; ++argv) 94 stat |= add(*argv, 0); 95 exit(stat); 96 } 97 98 int 99 add(char *name, int ignoreebusy) 100 { 101 extern int errno; 102 103 if (swapon(name) == -1) { 104 switch (errno) { 105 case EBUSY: 106 if (!ignoreebusy) 107 warnx("%s: device already in use", name); 108 break; 109 default: 110 warn("%s", name); 111 break; 112 } 113 return(1); 114 } 115 return(0); 116 } 117 118 static void 119 usage() 120 { 121 fprintf(stderr, "usage: swapon [-a] [special_file ...]\n"); 122 exit(1); 123 } 124