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Annotation of 43BSDReno/sbin/swapon/swapon.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1980 Regents of the University of California.
                      3:  * All rights reserved.
                      4:  *
                      5:  * Redistribution and use in source and binary forms are permitted
                      6:  * provided that: (1) source distributions retain this entire copyright
                      7:  * notice and comment, and (2) distributions including binaries display
                      8:  * the following acknowledgement:  ``This product includes software
                      9:  * developed by the University of California, Berkeley and its contributors''
                     10:  * in the documentation or other materials provided with the distribution
                     11:  * and in all advertising materials mentioning features or use of this
                     12:  * software. Neither the name of the University nor the names of its
                     13:  * contributors may be used to endorse or promote products derived
                     14:  * from this software without specific prior written permission.
                     15:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
                     16:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
                     17:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     18:  */
                     19: 
                     20: #ifndef lint
                     21: char copyright[] =
                     22: "@(#) Copyright (c) 1980 Regents of the University of California.\n\
                     23:  All rights reserved.\n";
                     24: #endif /* not lint */
                     25: 
                     26: #ifndef lint
                     27: static char sccsid[] = "@(#)swapon.c   5.4 (Berkeley) 6/1/90";
                     28: #endif /* not lint */
                     29: 
                     30: #include <fstab.h>
                     31: #include <errno.h>
                     32: #include <stdio.h>
                     33: 
                     34: main(argc, argv)
                     35:        int argc;
                     36:        char **argv;
                     37: {
                     38:        extern char *optarg;
                     39:        extern int optind;
                     40:        register struct fstab *fsp;
                     41:        register int stat;
                     42:        int ch, doall;
                     43: 
                     44:        doall = 0;
                     45:        while ((ch = getopt(argc, argv, "a")) != EOF)
                     46:                switch((char)ch) {
                     47:                case 'a':
                     48:                        doall = 1;
                     49:                        break;
                     50:                case '?':
                     51:                default:
                     52:                        usage();
                     53:                }
                     54:        argv += optind;
                     55: 
                     56:        stat = 0;
                     57:        if (doall)
                     58:                while (fsp = getfsent()) {
                     59:                        if (strcmp(fsp->fs_type, FSTAB_SW))
                     60:                                continue;
                     61:                        if (add(fsp->fs_spec, 1))
                     62:                                stat = 1;
                     63:                        else
                     64:                                printf("swapon: adding %s as swap device\n",
                     65:                                    fsp->fs_spec);
                     66:                }
                     67:        else if (!*argv)
                     68:                usage();
                     69:        for (; *argv; ++argv)
                     70:                stat |= add(*argv, 0);
                     71:        exit(stat);
                     72: }
                     73: 
                     74: static
                     75: add(name, ignoreebusy)
                     76:        char *name;
                     77:        int ignoreebusy;
                     78: {
                     79:        extern int errno;
                     80: 
                     81:        if (swapon(name) == -1) {
                     82:                switch (errno) {
                     83:                case EINVAL:
                     84:                        fprintf(stderr, "swapon: %s: device not configured\n",
                     85:                            name);
                     86:                        break;
                     87:                case EBUSY:
                     88:                        if (!ignoreebusy)
                     89:                                fprintf(stderr,
                     90:                                    "swapon: %s: device already in use\n",
                     91:                                     name);
                     92:                        break;
                     93:                default:
                     94:                        fprintf(stderr, "swapon: %s: ", name);
                     95:                        perror((char *)NULL);
                     96:                        break;
                     97:                }
                     98:                return(1);
                     99:        }
                    100:        return(0);
                    101: }
                    102: 
                    103: static
                    104: usage()
                    105: {
                    106:        fprintf(stderr, "usage: swapon [-a] [special_file ...]\n");
                    107:        exit(1);
                    108: }

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