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44faebf9 HP |
1 | /* |
2 | * Copyright (c) 2002, 2003 Greg Lehey | |
3 | * All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms, with or without | |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: | |
8 | * 1. Redistributions of source code must retain the above copyright | |
9 | * notice, this list of conditions and the following disclaimer. | |
10 | * 2. Redistributions in binary form must reproduce the above copyright | |
11 | * notice, this list of conditions and the following disclaimer in the | |
12 | * documentation and/or other materials provided with the distribution. | |
13 | * | |
14 | * This software is provided by the author ``as is'' and any express | |
15 | * or implied warranties, including, but not limited to, the implied | |
16 | * warranties of merchantability and fitness for a particular purpose | |
17 | * are disclaimed. In no event shall the author be liable for any | |
18 | * direct, indirect, incidental, special, exemplary, or consequential | |
19 | * damages (including, but not limited to, procurement of substitute | |
20 | * goods or services; loss of use, data, or profits; or business | |
21 | * interruption) however caused and on any theory of liability, | |
22 | * whether in contract, strict liability, or tort (including | |
23 | * negligence or otherwise) arising in any way out of the use of this | |
24 | * software, even if advised of the possibility of such damage. | |
25 | */ | |
26 | /* $Id: asf.c,v 1.6 2003/11/04 06:38:37 green Exp $ */ | |
27 | /* $FreeBSD: src/usr.sbin/asf/asf.c,v 1.6 2003/11/04 06:38:37 green Exp $ */ | |
2d7f24f1 | 28 | /* $DragonFly: src/usr.sbin/asf/asf.c,v 1.8 2008/09/19 17:49:31 swildner Exp $ */ |
44faebf9 HP |
29 | |
30 | #define MAXLINE 1024 | |
31 | #include <ctype.h> | |
32 | #include <errno.h> | |
33 | #include <stdio.h> | |
34 | #include <stdlib.h> | |
35 | #include <string.h> | |
36 | #include <sys/file.h> | |
37 | #include <sys/param.h> | |
38 | #include <sys/stat.h> | |
39 | #include <sys/wait.h> | |
40 | #include <sys/types.h> | |
41 | #include <fts.h> | |
42 | #include <unistd.h> | |
43 | ||
44 | #define MAXTOKEN 10 | |
45 | const char *modules_path; /* path relative to kernel | |
46 | * build directory */ | |
47 | const char *outfile; /* and where to write the output */ | |
48 | ||
49 | /* | |
50 | * Take a blank separated list of tokens and turn it into a list of | |
51 | * individual nul-delimited strings. Build a list of pointers at | |
52 | * token, which must have enough space for the tokens. Return the | |
53 | * number of tokens, or -1 on error (typically a missing string | |
54 | * delimiter). | |
55 | */ | |
56 | static int | |
57 | tokenize(char *cptr, char *token[], int maxtoken) | |
58 | { | |
59 | char delim; /* delimiter to search for */ | |
60 | int tokennr; /* index of this token */ | |
61 | ||
62 | for (tokennr = 0; tokennr < maxtoken;) { | |
63 | while (isspace(*cptr)) | |
64 | cptr++; /* skip initial white space */ | |
65 | if ((*cptr == '\0') || (*cptr == '\n') | |
66 | || (*cptr == '#')) /* end of line */ | |
67 | return tokennr; /* return number of tokens found */ | |
68 | delim = *cptr; | |
69 | token[tokennr] = cptr; /* point to it */ | |
70 | tokennr++; /* one more */ | |
71 | if (tokennr == maxtoken) /* run off the end? */ | |
72 | return tokennr; | |
73 | if ((delim == '\'') || (delim == '"')) { /* delimitered */ | |
74 | for (;;) { | |
75 | cptr++; | |
76 | if ((*cptr == delim) | |
77 | && (cptr[-1] != '\\')) { /* found the partner */ | |
78 | cptr++; /* move on past */ | |
79 | if (!isspace(*cptr)) /* no space after closing quote */ | |
80 | return -1; | |
81 | *cptr++ = '\0'; /* delimit */ | |
82 | } else if ((*cptr == '\0') | |
83 | || (*cptr == '\n')) /* end of line */ | |
84 | return -1; | |
85 | } | |
86 | } else { /* not quoted */ | |
87 | while ((*cptr != '\0') && (!isspace(*cptr)) && (*cptr != '\n')) | |
88 | cptr++; | |
89 | if (*cptr != '\0') /* not end of the line, */ | |
90 | *cptr++ = '\0'; /* delimit and move to the next */ | |
91 | } | |
92 | } | |
93 | return maxtoken; /* can't get here */ | |
94 | } | |
95 | ||
96 | static char * | |
7f6bda31 | 97 | findmodule(char *mod_path, const char *module_name) |
44faebf9 | 98 | { |
7f6bda31 | 99 | char *const path_argv[2] = { mod_path, NULL }; |
44faebf9 | 100 | char *module_path = NULL; |
7f6bda31 | 101 | size_t module_name_len = strlen(module_name); |
44faebf9 HP |
102 | FTS *fts; |
103 | FTSENT *ftsent; | |
104 | ||
7f6bda31 | 105 | if (mod_path == NULL) { |
44faebf9 HP |
106 | fprintf(stderr, |
107 | "Can't allocate memory to traverse a path: %s (%d)\n", | |
108 | strerror(errno), | |
109 | errno); | |
110 | exit(1); | |
111 | } | |
112 | fts = fts_open(path_argv, FTS_PHYSICAL | FTS_NOCHDIR, NULL); | |
113 | if (fts == NULL) { | |
114 | fprintf(stderr, | |
115 | "Can't begin traversing path %s: %s (%d)\n", | |
7f6bda31 | 116 | mod_path, |
44faebf9 HP |
117 | strerror(errno), |
118 | errno); | |
119 | exit(1); | |
120 | } | |
121 | while ((ftsent = fts_read(fts)) != NULL) { | |
122 | if (ftsent->fts_info == FTS_DNR || | |
123 | ftsent->fts_info == FTS_ERR || | |
124 | ftsent->fts_info == FTS_NS) { | |
125 | fprintf(stderr, | |
126 | "Error while traversing path %s: %s (%d)\n", | |
7f6bda31 | 127 | mod_path, |
44faebf9 HP |
128 | strerror(errno), |
129 | errno); | |
130 | exit(1); | |
131 | } | |
132 | if (ftsent->fts_info != FTS_F || | |
133 | ftsent->fts_namelen != module_name_len || | |
134 | memcmp(module_name, ftsent->fts_name, module_name_len) != 0) | |
135 | continue; | |
136 | if (asprintf(&module_path, | |
137 | "%.*s", | |
7f6bda31 | 138 | (int)ftsent->fts_pathlen, |
44faebf9 HP |
139 | ftsent->fts_path) == -1) { |
140 | fprintf(stderr, | |
141 | "Can't allocate memory traversing path %s: %s (%d)\n", | |
7f6bda31 | 142 | mod_path, |
44faebf9 HP |
143 | strerror(errno), |
144 | errno); | |
145 | exit(1); | |
146 | } | |
147 | break; | |
148 | } | |
149 | if (ftsent == NULL && errno != 0) { | |
150 | fprintf(stderr, | |
151 | "Couldn't complete traversing path %s: %s (%d)\n", | |
7f6bda31 | 152 | mod_path, |
44faebf9 HP |
153 | strerror(errno), |
154 | errno); | |
155 | exit(1); | |
156 | } | |
157 | fts_close(fts); | |
7f6bda31 | 158 | free(mod_path); |
44faebf9 HP |
159 | return (module_path); |
160 | } | |
161 | ||
162 | static void | |
163 | usage(const char *myname) | |
164 | { | |
165 | fprintf(stderr, | |
166 | "Usage:\n" | |
440dfd90 | 167 | "%s [-a] [-f] [-k] [modules-path [outfile]]\n\n" |
44faebf9 HP |
168 | "\t-a\tappend to outfile)\n" |
169 | "\t-f\tfind the module in any subdirectory of module-path\n" | |
440dfd90 | 170 | "\t-k\ttake input from kldstat(8)\n", |
44faebf9 HP |
171 | myname); |
172 | } | |
173 | ||
174 | int | |
175 | main(int argc, char *argv[]) | |
176 | { | |
177 | char buf[MAXLINE]; | |
178 | FILE *kldstat; | |
179 | FILE *objcopy; | |
180 | FILE *out; /* output file */ | |
181 | char ocbuf[MAXLINE]; | |
182 | int tokens; /* number of tokens on line */ | |
2d7f24f1 | 183 | int ch; |
44faebf9 HP |
184 | const char *filemode = "w"; /* mode for outfile */ |
185 | char cwd[MAXPATHLEN]; /* current directory */ | |
44faebf9 | 186 | char *token[MAXTOKEN]; |
44faebf9 HP |
187 | int dofind = 0; |
188 | ||
189 | getcwd(cwd, MAXPATHLEN); /* find where we are */ | |
190 | kldstat = stdin; | |
01b6656f | 191 | while ((ch = getopt(argc, argv, "afk")) != -1) { |
9f7ce2c1 SS |
192 | switch (ch) { |
193 | case 'k': /* get input from kldstat(8) */ | |
194 | if (!(kldstat = popen("kldstat", "r"))) { | |
195 | perror("Can't start kldstat"); | |
44faebf9 HP |
196 | return 1; |
197 | } | |
9f7ce2c1 SS |
198 | break; |
199 | case 'a': /* append to outfile */ | |
200 | filemode = "a"; | |
201 | break; | |
9f7ce2c1 SS |
202 | case 'f': /* find .ko (recursively) */ |
203 | dofind = 1; | |
204 | break; | |
205 | default: | |
44faebf9 HP |
206 | usage(argv[0]); |
207 | return 1; | |
208 | } | |
209 | } | |
9f7ce2c1 SS |
210 | |
211 | argv += optind; | |
212 | argc -= optind; | |
213 | ||
214 | if (argc >= 1) { | |
215 | modules_path = argv[0]; | |
216 | argc--; | |
217 | argv++; | |
218 | } | |
219 | ||
220 | if (argc >= 1) { | |
221 | outfile = argv[0]; | |
222 | argc--; | |
223 | argv++; | |
224 | } | |
225 | ||
226 | if (argc > 0) { | |
227 | fprintf(stderr, | |
228 | "Extraneous startup information: \"%s\", aborting\n", | |
229 | argv[0]); | |
230 | usage(getprogname()); | |
231 | return 1; | |
232 | } | |
44faebf9 | 233 | if (modules_path == NULL) |
8e1c6f81 | 234 | modules_path = "/boot/modules"; |
44faebf9 HP |
235 | if (outfile == NULL) |
236 | outfile = ".asf"; | |
237 | if ((out = fopen(outfile, filemode)) == NULL) { | |
238 | fprintf(stderr, | |
239 | "Can't open output file %s: %s (%d)\n", | |
240 | outfile, | |
241 | strerror(errno), | |
242 | errno); | |
243 | return 1; | |
244 | } | |
245 | while (fgets(buf, MAXLINE, kldstat)) { | |
246 | if ((!(strstr(buf, "kernel"))) | |
247 | && buf[0] != 'I') { | |
7f6bda31 SW |
248 | long long base; |
249 | long long textaddr = 0; | |
250 | long long dataaddr = 0; | |
251 | long long bssaddr = 0; | |
44faebf9 HP |
252 | |
253 | tokens = tokenize(buf, token, MAXTOKEN); | |
34ba3f53 MD |
254 | if (tokens <= 1) |
255 | continue; | |
44faebf9 HP |
256 | base = strtoll(token[2], NULL, 16); |
257 | if (!dofind) { | |
44faebf9 HP |
258 | snprintf(ocbuf, |
259 | MAXLINE, | |
440dfd90 | 260 | "/usr/bin/objdump --section-headers %s/%s", |
44faebf9 | 261 | modules_path, |
9f7ce2c1 | 262 | token[4]); |
44faebf9 HP |
263 | } else { |
264 | char *modpath; | |
265 | ||
266 | modpath = findmodule(strdup(modules_path), token[4]); | |
267 | if (modpath == NULL) | |
268 | continue; | |
269 | snprintf(ocbuf, | |
270 | MAXLINE, | |
9f7ce2c1 SS |
271 | "/usr/bin/objdump --section-headers %s", |
272 | modpath); | |
44faebf9 HP |
273 | free(modpath); |
274 | } | |
275 | if (!(objcopy = popen(ocbuf, "r"))) { | |
276 | fprintf(stderr, | |
277 | "Can't start %s: %s (%d)\n", | |
278 | ocbuf, | |
279 | strerror(errno), | |
280 | errno); | |
281 | return 1; | |
282 | } | |
283 | while (fgets(ocbuf, MAXLINE, objcopy)) { | |
284 | int octokens; | |
285 | char *octoken[MAXTOKEN]; | |
286 | ||
287 | octokens = tokenize(ocbuf, octoken, MAXTOKEN); | |
288 | if (octokens > 1) { | |
289 | if (!strcmp(octoken[1], ".text")) | |
290 | textaddr = strtoll(octoken[3], NULL, 16) + base; | |
291 | else if (!strcmp(octoken[1], ".data")) | |
292 | dataaddr = strtoll(octoken[3], NULL, 16) + base; | |
293 | else if (!strcmp(octoken[1], ".bss")) | |
294 | bssaddr = strtoll(octoken[3], NULL, 16) + base; | |
295 | } | |
296 | } | |
297 | if (textaddr) { /* we must have a text address */ | |
298 | if (!dofind) { | |
299 | fprintf(out, | |
440dfd90 | 300 | "add-symbol-file %s%s%s/%s 0x%llx", |
9f7ce2c1 SS |
301 | modules_path[0] != '/' ? cwd : "", |
302 | modules_path[0] != '/' ? "/" : "", | |
44faebf9 | 303 | modules_path, |
44faebf9 | 304 | token[4], |
44faebf9 HP |
305 | textaddr); |
306 | } else { | |
307 | char *modpath; | |
9f7ce2c1 | 308 | |
44faebf9 HP |
309 | modpath = findmodule(strdup(modules_path), token[4]); |
310 | if (modpath == NULL) | |
311 | continue; | |
312 | fprintf(out, | |
9f7ce2c1 | 313 | "add-symbol-file %s 0x%llx", |
44faebf9 | 314 | modpath, |
44faebf9 HP |
315 | textaddr); |
316 | free(modpath); | |
317 | } | |
318 | if (dataaddr) | |
319 | fprintf(out, " -s .data 0x%llx", dataaddr); | |
320 | if (bssaddr) | |
321 | fprintf(out, " -s .bss 0x%llx", bssaddr); | |
322 | fprintf(out, "\n"); | |
323 | } | |
324 | } | |
325 | } | |
326 | return 0; | |
327 | } |