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 (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright 1998 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25
26 #pragma init(ld_support_init)
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 #define SUNPRO_DEPENDENCIES "SUNPRO_DEPENDENCIES"
37
38 /*
39 * Linked list of strings - used to keep lists of names
40 * of directories or files.
41 */
42
43 struct Stritem {
44 char *str;
45 void *next;
46 };
47
48 typedef struct Stritem Stritem;
49
50 static char *depend_file = NULL;
51 static Stritem *list = NULL;
52
53 void
mk_state_init(void)54 mk_state_init(void)
55 {
56 depend_file = getenv(SUNPRO_DEPENDENCIES);
57 } /* mk_state_init() */
58
59 static void
prepend_str(Stritem ** list,const char * str)60 prepend_str(Stritem **list, const char *str)
61 {
62 Stritem *new;
63 char *newstr;
64
65 if (!(new = calloc(1, sizeof (Stritem)))) {
66 perror("libmakestate.so");
67 return;
68 } /* if */
69
70 if (!(newstr = malloc(strlen(str) + 1))) {
71 perror("libmakestate.so");
72 return;
73 } /* if */
74
75 new->str = strcpy(newstr, str);
76 new->next = *list;
77 *list = new;
78
79 } /* prepend_str() */
80
81 void
mk_state_collect_dep(const char * file)82 mk_state_collect_dep(const char *file)
83 {
84 /*
85 * SUNPRO_DEPENDENCIES wasn't set, we don't collect .make.state
86 * information.
87 */
88 if (!depend_file)
89 return;
90
91 prepend_str(&list, file);
92
93 } /* mk_state_collect_dep() */
94
95 void
mk_state_update_exit()96 mk_state_update_exit()
97 {
98 Stritem *cur;
99 char lockfile[MAXPATHLEN], *err, *space, *target;
100 FILE *ofp;
101 extern char *file_lock(char *, char *, int);
102
103 if (!depend_file)
104 return;
105
106 if ((space = strchr(depend_file, ' ')) == NULL)
107 return;
108 *space = '\0';
109 target = &space[1];
110
111 (void) sprintf(lockfile, "%s.lock", depend_file);
112 if ((err = file_lock(depend_file, lockfile, 0))) {
113 (void) fprintf(stderr, "%s\n", err);
114 return;
115 } /* if */
116
117 if (!(ofp = fopen(depend_file, "a")))
118 return;
119
120 if (list)
121 (void) fprintf(ofp, "%s: ", target);
122
123 for (cur = list; cur; cur = cur->next)
124 (void) fprintf(ofp, " %s", cur->str);
125
126 (void) fputc('\n', ofp);
127
128 (void) fclose(ofp);
129 (void) unlink(lockfile);
130 *space = ' ';
131
132 } /* mk_state_update_exit() */
133
134 static void
ld_support_init()135 ld_support_init()
136 {
137 mk_state_init();
138
139 } /* ld_support_init() */
140
141 void
ld_file(const char * file,const Elf_Kind ekind,int flags,Elf * elf)142 ld_file(const char *file, const Elf_Kind ekind, int flags, Elf *elf)
143 {
144 if (!((flags & LD_SUP_DERIVED) && !(flags & LD_SUP_EXTRACTED)))
145 return;
146
147 mk_state_collect_dep(file);
148
149 } /* ld_file */
150
151 void
ld_atexit(int exit_code)152 ld_atexit(int exit_code)
153 {
154 if (exit_code)
155 return;
156
157 mk_state_update_exit();
158
159 } /* ld_atexit() */
160
161 /*
162 * Supporting 64-bit objects
163 */
164 void
ld_file64(const char * file,const Elf_Kind ekind,int flags,Elf * elf)165 ld_file64(const char *file, const Elf_Kind ekind, int flags, Elf *elf)
166 {
167 if (!((flags & LD_SUP_DERIVED) && !(flags & LD_SUP_EXTRACTED)))
168 return;
169
170 mk_state_collect_dep(file);
171
172 } /* ld_file64 */
173
174 void
ld_atexit64(int exit_code)175 ld_atexit64(int exit_code)
176 {
177 if (exit_code)
178 return;
179
180 mk_state_update_exit();
181
182 } /* ld_atexit64() */
183