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 54 mk_state_init(void) 55 { 56 depend_file = getenv(SUNPRO_DEPENDENCIES); 57 } /* mk_state_init() */ 58 59 static void 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 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 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 135 ld_support_init() 136 { 137 mk_state_init(); 138 139 } /* ld_support_init() */ 140 141 void 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 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 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 175 ld_atexit64(int exit_code) 176 { 177 if (exit_code) 178 return; 179 180 mk_state_update_exit(); 181 182 } /* ld_atexit64() */ 183