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Annotation of 43BSDReno/usr.bin/groups/groups.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[] = "@(#)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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