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Annotation of 43BSDReno/usr.bin/groups/groups.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[] = "@(#)groups.c   5.4 (Berkeley) 6/1/90";
        !            28: #endif /* not lint */
        !            29: 
        !            30: /*
        !            31:  * groups
        !            32:  */
        !            33: 
        !            34: #include <sys/param.h>
        !            35: #include <grp.h>
        !            36: #include <pwd.h>
        !            37: #include <stdio.h>
        !            38: 
        !            39: int    groups[NGROUPS];
        !            40: 
        !            41: main(argc, argv)
        !            42:        int argc;
        !            43:        char *argv[];
        !            44: {
        !            45:        int ngroups, i;
        !            46:        char *sep = "";
        !            47:        struct group *gr;
        !            48: 
        !            49:        if (argc > 1)
        !            50:                showgroups(argv[1]);
        !            51:        ngroups = getgroups(NGROUPS, groups);
        !            52:        for (i = 0; i < ngroups; i++) {
        !            53:                gr = getgrgid(groups[i]);
        !            54:                if (gr == NULL)
        !            55:                        printf("%s%d", sep, groups[i]);
        !            56:                else
        !            57:                        printf("%s%s", sep, gr->gr_name);
        !            58:                sep = " ";
        !            59:        }
        !            60:        printf("\n");
        !            61:        exit(0);
        !            62: }
        !            63: 
        !            64: showgroups(user)
        !            65:        register char *user;
        !            66: {
        !            67:        register struct group *gr;
        !            68:        register struct passwd *pw;
        !            69:        register char **cp;
        !            70:        char *sep = "";
        !            71: 
        !            72:        if ((pw = getpwnam(user)) == NULL) {
        !            73:                fprintf(stderr, "groups: no such user.\n");
        !            74:                exit(1);
        !            75:        }
        !            76:        while (gr = getgrent()) {
        !            77:                if (pw->pw_gid == gr->gr_gid) {
        !            78:                        printf("%s%s", sep, gr->gr_name);
        !            79:                        sep = " ";
        !            80:                        continue;
        !            81:                }
        !            82:                for (cp = gr->gr_mem; cp && *cp; cp++)
        !            83:                        if (strcmp(*cp, user) == 0) {
        !            84:                                printf("%s%s", sep, gr->gr_name);
        !            85:                                sep = " ";
        !            86:                                break;
        !            87:                        }
        !            88:        }
        !            89:        printf("\n");
        !            90:        exit(0);
        !            91: }

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