8322 nl: misleading-indentation
[unleashed/tickless.git] / usr / src / lib / efcode / fcdriver / load_node.c
blob613a1f94f68fdc11788bfa0581ed0dd3a8b6b137
1 /*
2 * CDDL HEADER START
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.
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.
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]
20 * CDDL HEADER END
23 * Copyright (c) 2000 by Sun Microsystems, Inc.
24 * All rights reserved.
27 #pragma ident "%Z%%M% %I% %E% SMI"
29 #include <unistd.h>
30 #include <stdlib.h>
31 #include <stdio.h>
32 #include <sys/stat.h>
33 #include <fcntl.h>
34 #include <string.h>
35 #include <fcntl.h>
36 #include <sys/shm.h>
37 #include <dlfcn.h>
38 #include <sys/systeminfo.h>
39 #include <sys/utsname.h>
41 #include <fcode/private.h>
42 #include <fcode/log.h>
44 #include <fcdriver/fcdriver.h>
46 static char *default_search_path;
47 static char search_proto[] =
48 "/usr/platform/%s/lib/efcode%s:"
49 "/usr/platform/%s/lib/efcode%s:"
50 "/usr/lib/efcode%s";
53 * Build the library/drop-in fcode search path. If there's no architecture
54 * passed, we build the search path (per the PSARC decision):
55 * /usr/platform/`uname -i`/lib/efcode
56 * /usr/platform/`uname -m`/lib/efcode
57 * /usr/lib/efcode
58 * If there is an architecture passed, we prepend the following search path to
59 * the above:
60 * /usr/platform/`uname -i`/lib/efcode/{architecture}
61 * /usr/platform/`uname -m`/lib/efcode/{architecture}
62 * /usr/lib/efcode/{architecture}
63 * This allows FCode drop-in searches to find FCode in the non-architecture
64 * directories.
66 static void
67 build_default_search_path(char *arch)
69 char platform[100], *p;
70 struct stat statb;
71 struct utsname utsname;
72 int len;
74 sysinfo(SI_PLATFORM, platform, sizeof (platform));
75 uname(&utsname);
76 len = strlen(search_proto) + strlen(platform) + strlen(utsname.machine);
77 if (*arch != '\0') {
78 len += len + (3 * strlen(arch)) + 1;
80 default_search_path = MALLOC(len);
81 if (*arch != '\0') {
82 sprintf(default_search_path, search_proto, platform, arch,
83 utsname.machine, arch, arch);
84 p = default_search_path + strlen(default_search_path);
85 *p++ = ':';
86 } else
87 p = default_search_path;
89 sprintf(p, search_proto, platform, "", utsname.machine, "", "");
92 static void
93 set_default_search_path(fcode_env_t *env)
95 if (default_search_path)
96 FREE(default_search_path);
98 parse_word(env);
99 default_search_path = pop_a_duped_string(env, NULL);
102 static void
103 get_default_search_path(fcode_env_t *env)
105 push_a_string(env, default_search_path);
109 * Complicated by fact that a library (e.g. a 32-bit library) can match the
110 * file name. But if we're running as 64-bit, dlopen on that library will
111 * fail.
113 static char *
114 search_path(char *name, char *search, int (*fn)(char *))
116 char *p, *next_p;
117 char *tpath, *fpath;
119 fpath = STRDUP(search);
120 for (p = fpath; p != NULL; p = next_p) {
121 if ((next_p = strchr(p, ':')) != NULL)
122 *next_p++ = '\0';
123 tpath = MALLOC(strlen(p) + strlen(name) + 2);
124 sprintf(tpath, "%s/%s", p, name);
125 if ((*fn)(tpath)) {
126 FREE(fpath);
127 return (tpath);
129 FREE(tpath);
131 FREE(fpath);
132 return (NULL);
135 static int
136 load_lib_file(char *path)
138 struct stat buf;
140 debug_msg(DEBUG_FIND_FCODE, "load_lib_file: '%s' -> ", path);
141 if (stat(path, &buf)) {
142 debug_msg(DEBUG_FIND_FCODE, "stat failed\n");
143 return (0);
145 if (dlopen(path, RTLD_NOW) != NULL) {
146 debug_msg(DEBUG_FIND_FCODE, "OK\n");
147 return (1);
149 debug_msg(DEBUG_FIND_FCODE, "dlopen failed\n");
150 return (0);
153 static int
154 is_fcode_file(char *path)
156 struct stat statb;
157 int fd;
158 uchar_t header[8];
159 int status;
160 static char func_name[] = "is_fcode_file";
161 extern int check_fcode_header(char *, uchar_t *, int);
163 debug_msg(DEBUG_FIND_FCODE, "%s: '%s' -> ", func_name, path);
164 if ((fd = open(path, 0)) < 0) {
165 debug_msg(DEBUG_FIND_FCODE, "%s: '%s' can't open\n", func_name,
166 path);
167 return (0);
169 if (fstat(fd, &statb) != 0 || read(fd, header, sizeof (header)) < 0) {
170 debug_msg(DEBUG_FIND_FCODE, "%s: '%s' can't fstat/read\n",
171 func_name, path);
172 close(fd);
173 return (0);
175 status = check_fcode_header(path, header, statb.st_size);
176 debug_msg(DEBUG_FIND_FCODE, "%s: '%s' format %s\n", func_name, path,
177 status ? "OK" : "NOT OK");
178 close(fd);
179 return (status);
182 static char *
183 find_lib_file(fcode_env_t *env, char *prefix, char *name, char *suffix,
184 int (*fn)(char *))
186 char *search, *fname;
187 char *lib_name;
188 common_data_t *cdp = env->private;
190 if ((search = cdp->search_path) == NULL &&
191 (search = default_search_path) == NULL) {
192 log_message(MSG_ERROR, "find_lib_file: no search path\n");
193 return (NULL);
196 lib_name = MALLOC(strlen(name) + strlen(prefix) + strlen(suffix) + 1);
197 sprintf(lib_name, "%s%s%s", prefix, name, suffix);
198 fname = search_path(lib_name, search, fn);
199 FREE(lib_name);
200 return (fname);
203 char *
204 search_for_fcode_file(fcode_env_t *env, char *basename)
206 return (find_lib_file(env, "", basename, ".fc", is_fcode_file));
209 static void
210 load_appropriate_file(fcode_env_t *env, char *name, device_t *d)
212 char *fname;
214 if ((fname = find_lib_file(env, "lfc_", name, ".so", load_lib_file))
215 != NULL) {
216 debug_msg(DEBUG_FIND_FCODE, "Loading Library: %s\n", fname);
217 FREE(fname);
218 } else if ((fname = search_for_fcode_file(env, name)) != NULL) {
219 debug_msg(DEBUG_FIND_FCODE, "Loading Fcode: %s\n", fname);
220 run_fcode_from_file(env, fname, 0);
221 FREE(fname);
222 } else {
223 throw_from_fclib(env, 1,
224 "Can't find 'lfc_%s.so' or '%s.fc'\n", name, name);
228 void
229 install_node_data(fcode_env_t *env, device_t *d)
231 prop_t *p;
232 device_t *cd;
233 char libname[512];
234 static char func_name[] = "install_node_data";
236 if (d->parent) {
237 if ((p = lookup_package_property(env, "device_type",
238 d->parent)) == NULL) {
239 log_message(MSG_ERROR, "%s: no 'device_type' property"
240 " for '%s'\n", func_name, get_path(env, d->parent));
241 return;
244 * Warning: lookup_package_property uses a static data area to
245 * build the property node returned, so we have to grab a copy
246 * of the data.
248 strcpy(libname, (char *)p->data);
249 strcat(libname, "_");
250 } else
251 libname[0] = '\0';
253 if ((p = lookup_package_property(env, "device_type", d)) == NULL) {
254 log_message(MSG_ERROR, "%s: no 'device_type' property for"
255 " '%s'\n", func_name, get_path(env, d));
256 return;
260 * Warning: lookup_package_property uses a static data area to build
261 * the property node returned, so we have to grab a copy of the
262 * data.
264 strcat(libname, (char *)p->data);
266 debug_msg(DEBUG_FIND_FCODE, "%s: `%s` lname: '%s'\n", func_name,
267 get_path(env, d), libname);
269 load_appropriate_file(env, libname, d);
272 #pragma init(_init)
274 static void
275 _init(void)
277 fcode_env_t *env = initial_env;
279 ASSERT(env);
280 NOTICE;
282 #if defined(__sparcv9)
283 build_default_search_path("/sparcv9");
284 #else
285 build_default_search_path("");
286 #endif
287 FORTH(0, "set-default-search-path", set_default_search_path);
288 FORTH(0, "get-default-search-path", get_default_search_path);