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