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