root/usr/src/cmd/svr4pkg/installf/removef.c
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (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 2008 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

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

#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <limits.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <locale.h>
#include <libintl.h>
#include <pkglib.h>
#include <install.h>
#include <libinst.h>
#include <libadm.h>
#include "installf.h"

void
removef(int argc, char *argv[])
{
        struct cfextra *new;
        char    buf[PATH_MAX];
        char    *path;
        int     flag;
        int     len;
        int     max_eptnum;

        flag = strcmp(argv[0], "-") == 0;

        eptnum = 0;
        max_eptnum = 64;        /* starting size of array */
        extlist = malloc(max_eptnum * sizeof (struct cfextra *));

        for (;;) {
                if (flag) {
                        if (fgets(buf, PATH_MAX, stdin) == NULL)
                                break;

                        /* strip trailing new line */
                        len = strlen(buf);
                        if (buf[len - 1] == '\n')
                                buf[len - 1] = '\0';

                        path = buf;
                } else {
                        if (argc-- <= 0)
                                break;
                        path = argv[argc];
                }

                /*
                 * This strips the install root from the path using
                 * a questionable algorithm. This should go away as
                 * we define more precisely the command line syntax
                 * with our '-R' option. - JST
                 */
                path = orig_path_ptr(path);

                if (path == NULL) {
                        logerr(gettext("ERROR: no pathname was provided"));
                        warnflag++;
                        continue;
                }

                if (*path != '/') {
                        logerr(gettext(
                            "WARNING: relative pathname <%s> ignored"), path);
                        warnflag++;
                        continue;
                }

                new = calloc(1, sizeof (struct cfextra));
                if (new == NULL) {
                        progerr(strerror(errno));
                        quit(99);
                }
                new->cf_ent.ftype = '-';

                (void) eval_path(&(new->server_path), &(new->client_path),
                    &(new->map_path), path);

                new->cf_ent.path = new->client_path;

                extlist[eptnum++] = new;
                if (eptnum >= max_eptnum) {
                        /* array size grows exponentially */
                        max_eptnum <<= 1;
                        extlist = realloc(extlist,
                            max_eptnum * sizeof (struct cfextra *));
                        if (extlist == NULL) {
                                progerr(strerror(errno));
                                quit(99);
                        }
                }
        }
        extlist[eptnum] = (struct cfextra *)NULL;

        qsort((char *)extlist,
            (unsigned)eptnum, sizeof (struct cfextra *), cfentcmp);
}