1 /* 2 * Copyright (c) 1980, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 */ 7 8 #ifndef lint 9 static char copyright[] = 10 "@(#) Copyright (c) 1980, 1993\n\ 11 The Regents of the University of California. All rights reserved.\n"; 12 #endif /* not lint */ 13 14 #ifndef lint 15 static char sccsid[] = "@(#)swapon.c 8.1 (Berkeley) 06/05/93"; 16 #endif /* not lint */ 17 18 #include <fstab.h> 19 #include <errno.h> 20 #include <stdio.h> 21 22 main(argc, argv) 23 int argc; 24 char **argv; 25 { 26 extern char *optarg; 27 extern int optind; 28 register struct fstab *fsp; 29 register int stat; 30 int ch, doall; 31 32 doall = 0; 33 while ((ch = getopt(argc, argv, "a")) != EOF) 34 switch((char)ch) { 35 case 'a': 36 doall = 1; 37 break; 38 case '?': 39 default: 40 usage(); 41 } 42 argv += optind; 43 44 stat = 0; 45 if (doall) 46 while (fsp = getfsent()) { 47 if (strcmp(fsp->fs_type, FSTAB_SW)) 48 continue; 49 if (add(fsp->fs_spec, 1)) 50 stat = 1; 51 else 52 printf("swapon: adding %s as swap device\n", 53 fsp->fs_spec); 54 } 55 else if (!*argv) 56 usage(); 57 for (; *argv; ++argv) 58 stat |= add(*argv, 0); 59 exit(stat); 60 } 61 62 add(name, ignoreebusy) 63 char *name; 64 int ignoreebusy; 65 { 66 extern int errno; 67 68 if (swapon(name) == -1) { 69 switch (errno) { 70 case EINVAL: 71 fprintf(stderr, "swapon: %s: device not configured\n", 72 name); 73 break; 74 case EBUSY: 75 if (!ignoreebusy) 76 fprintf(stderr, 77 "swapon: %s: device already in use\n", 78 name); 79 break; 80 default: 81 fprintf(stderr, "swapon: %s: ", name); 82 perror((char *)NULL); 83 break; 84 } 85 return(1); 86 } 87 return(0); 88 } 89 90 usage() 91 { 92 fprintf(stderr, "usage: swapon [-a] [special_file ...]\n"); 93 exit(1); 94 } 95