oamuser/group/groupmod.c

	groupmod.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*  Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/*    All Rights Reserved   */


#pragma ident   "%Z%%M% %I% %E% SMI"    /* SVr4.0 1.3 */

#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <limits.h>
#include <userdefs.h>
#include <users.h>
#include <errno.h>
#include "messages.h"

/*
 *  groupmod -g gid [-o] | -n name group
 *
 *  This command modifies groups on the system.  Arguments are:
 *
 *  gid - a gid_t less than UID_MAX
 *  name - a string of printable characters excluding colon (:) and less
 *      than MAXGLEN characters long.
 *  group - a string of printable characters excluding colon(:) and less
 *      than MAXGLEN characters long.
 */

extern int valid_gid(), mod_group();
extern void errmsg();

char *cmdname = "groupmod";

main(argc, argv)
int argc;
char *argv[];
{
    int ch;             /* return from getopt */
    gid_t gid;          /* group id */
    int oflag = 0;          /* flags */
    int valret;         /* return from valid_gid() */
    char *gidstr = NULL;        /* gid from command line */
    char *newname = NULL;       /* new group name with -n option */
    char *grpname;          /* group name from command line */
    int warning;

    oflag = 0;  /* flags */

    while ((ch = getopt(argc, argv, "g:on:")) != EOF)  {
        switch (ch) {
            case 'g':
                gidstr = optarg;
                break;
            case 'o':
                oflag++;
                break;
            case 'n':
                newname = optarg;
                break;
            case '?':
                errmsg(M_MUSAGE);
                exit(EX_SYNTAX);
        }
    }

    if ((oflag && !gidstr) || optind != argc - 1) {
        errmsg(M_MUSAGE);
        exit(EX_SYNTAX);
    }

    grpname = argv[optind];

    if (gidstr) {
        /* convert gidstr to integer */
        char *ptr;

        errno = 0;
        gid = (gid_t)strtol(gidstr, &ptr, 10);

        if (*ptr || errno == ERANGE) {
            errmsg(M_GID_INVALID, gidstr);
            exit(EX_BADARG);
        }

        switch (valid_gid(gid, NULL)) {
        case RESERVED:
            errmsg(M_RESERVED, gid);
            break;

        case NOTUNIQUE:
            if (!oflag) {
                errmsg(M_GRP_USED, gidstr);
                exit(EX_ID_EXISTS);
            }
            break;

        case INVALID:
            errmsg(M_GID_INVALID, gidstr);
            exit(EX_BADARG);
            /*NOTREACHED*/

        case TOOBIG:
            errmsg(M_TOOBIG, gid);
            exit(EX_BADARG);
            /*NOTREACHED*/

        }

    } else gid = -1;

    if (newname) {
        switch (valid_gname(newname, NULL, &warning)) {
        case INVALID:
            errmsg(M_GRP_INVALID, newname);
            exit(EX_BADARG);
        case NOTUNIQUE:
            errmsg(M_GRP_USED, newname);
            exit(EX_NAME_EXISTS);
        }
        if (warning)
            warningmsg(warning, newname);
    }

    if ((valret = mod_group(grpname, gid, newname)) != EX_SUCCESS) {
        if (valret == EX_NAME_NOT_EXIST)
            errmsg(M_NO_GROUP, grpname);
        else
            errmsg(M_UPDATE, "modified");
    }

    return (valret);
}