5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland/*
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland * CDDL HEADER START
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland *
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland * The contents of this file are subject to the terms of the
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland * Common Development and Distribution License (the "License").
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland * You may not use this file except in compliance with the License.
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland *
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland * or http://www.opensolaris.org/os/licensing.
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland * See the License for the specific language governing permissions
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland * and limitations under the License.
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland *
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland * When distributing Covered Code, include this CDDL HEADER in each
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland * If applicable, add the following below this CDDL HEADER, with the
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland * fields enclosed by brackets "[]" replaced with your own identifying
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland * information: Portions Copyright [yyyy] [name of copyright owner]
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland *
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland * CDDL HEADER END
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland */
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland/*
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland * Use is subject to license terms.
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland */
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland/* All Rights Reserved */
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland#include <limits.h>
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland#include <string.h>
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland#include <stdlib.h>
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland#include <unistd.h>
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland#include <errno.h>
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland#include <locale.h>
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland#include <libintl.h>
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland#include <pkglib.h>
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland#include <libadm.h>
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland#define ERR_MEMORY "memory allocation failure, errno=%d"
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland/*
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland * using factor of eight limits maximum
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland * memory fragmentation to 12.5%
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland */
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland#define MEMSIZ PATH_MAX*8
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterlandstruct dup {
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland char mem[MEMSIZ];
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland struct dup *next;
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland};
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterlandstatic struct dup *head, *tail, *new;
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterlandstatic int size, initialized;
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterlandstatic void pathinit();
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterlandstatic void growstore();
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland/*
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland * These functions allocate space for all the path names required
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland * in the packaging code. They are all allocated here so as to reduce
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland * memory fragmentation.
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland */
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland/* Initialize storage area. */
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterlandstatic void
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterlandpathinit()
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland{
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland if (head == NULL)
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland size = (-1);
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland else {
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland /* free all memory used except initial structure */
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland tail = head->next;
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland while (tail) {
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland new = tail->next;
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland free(tail);
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland tail = new;
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland }
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland tail = head;
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland size = MEMSIZ;
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland }
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland initialized = 1;
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland}
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland/* Allocate additional space for storage area. */
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterlandstatic void
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterlandgrowstore()
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland{
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland /* need more memory */
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland new = calloc(1, sizeof (struct dup));
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland if (new == NULL) {
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland progerr(gettext(ERR_MEMORY), errno);
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland quit(99);
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland }
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland if (head == NULL)
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland head = new;
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland else
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland tail->next = new;
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland tail = new;
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland size = MEMSIZ;
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland}
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland/* Allocate and return a pointer. If n == 0, initialize. */
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterlandchar *
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterlandpathalloc(int n)
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland{
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland char *pt;
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland if (n <= 0) {
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland pathinit();
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland pt = NULL;
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland } else {
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland if (!initialized)
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland pathinit();
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland n++; /* Account for terminating null. */
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland if (size < n)
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland growstore();
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland pt = &tail->mem[MEMSIZ-size];
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland size -= n;
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland }
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland return (pt);
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland}
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland/* Allocate and insert a pathname returning a pointer to the new string. */
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterlandchar *
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterlandpathdup(char *s)
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland{
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland char *pt;
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland int n;
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland if (s == NULL) {
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland pathinit();
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland pt = NULL;
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland } else {
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland if (!initialized)
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland pathinit();
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland n = strlen(s) + 1; /* string + null terminator */
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland if (size < n)
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland growstore();
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland pt = &tail->mem[MEMSIZ-size];
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland size -= n;
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland (void) strcpy(pt, s);
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland }
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland return (pt);
5c51f1241dbbdf2656d0e10011981411ed0c9673Moriah Waterland}