1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License").  You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22/*
23 * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26#pragma ident	"%Z%%M%	%I%	%E% SMI"
27
28#include <stdio.h>
29#include <unistd.h>
30#include <stdlib.h>
31#include <string.h>
32#include <libelf.h>
33#include <sys/param.h>
34#include <link.h>
35
36#pragma init(ld_support_init)
37
38#define	SUNPRO_DEPENDENCIES	"SUNPRO_DEPENDENCIES"
39
40/*
41 * Linked list of strings - used to keep lists of names
42 * of directories or files.
43 */
44struct Stritem {
45	char	*str;
46	void	*next;
47};
48
49typedef struct Stritem 	Stritem;
50
51static char 	*depend_file = NULL;
52static Stritem	*list = NULL;
53
54void
55ld_support_init()
56{
57	depend_file = getenv(SUNPRO_DEPENDENCIES);
58}
59
60static void
61prepend_str(Stritem **list, const char *str)
62{
63	Stritem		*new;
64	char		*newstr;
65	const char	*lib = "libldmake.so";
66
67	if (!(new = calloc(1, sizeof (Stritem)))) {
68		perror(lib);
69		return;
70	}
71
72	if (!(newstr = malloc(strlen(str) + 1))) {
73		perror(lib);
74		return;
75	}
76
77	new->str = strcpy(newstr, str);
78	new->next = *list;
79	*list = new;
80
81}
82
83/* ARGSUSED */
84void
85ld_file(const char *file, const Elf_Kind ekind, int flags, Elf *elf)
86{
87	/*
88	 * SUNPRO_DEPENDENCIES wasn't set, we don't collect .make.state
89	 * information.
90	 */
91	if (!depend_file)
92		return;
93
94	if ((flags & LD_SUP_DERIVED) && !(flags & LD_SUP_EXTRACTED))
95		prepend_str(&list, file);
96}
97
98void
99ld_file64(const char *file, const Elf_Kind ekind, int flags, Elf *elf)
100{
101	ld_file(file, ekind, flags, elf);
102}
103
104void
105ld_atexit(int exit_code)
106{
107	Stritem 	*cur;
108	char		lockfile[MAXPATHLEN], *err, *space, *target;
109	FILE		*ofp;
110	extern char 	*file_lock(char *, char *, int);
111
112	if (!depend_file || exit_code)
113		return;
114
115	if ((space = strchr(depend_file, ' ')) == NULL)
116		return;
117	*space = '\0';
118	target = &space[1];
119
120	(void) snprintf(lockfile, MAXPATHLEN, "%s.lock", depend_file);
121	if ((err = file_lock(depend_file, lockfile, 0))) {
122		(void) fprintf(stderr, "%s\n", err);
123		return;
124	}
125
126	if (!(ofp = fopen(depend_file, "a")))
127		return;
128
129	if (list)
130		(void) fprintf(ofp, "%s: ", target);
131
132	for (cur = list; cur; cur = cur->next)
133		(void) fprintf(ofp, " %s", cur->str);
134
135	(void) fputc('\n', ofp);
136
137	(void) fclose(ofp);
138	(void) unlink(lockfile);
139	*space = ' ';
140}
141
142void
143ld_atexit64(int exit_code)
144{
145	ld_atexit(exit_code);
146}
147