blob: fb195f0ed0ef3833ab016c08a5db2953b509acc5 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * docproc is a simple preprocessor for the template files
3 * used as placeholders for the kernel internal documentation.
4 * docproc is used for documentation-frontend and
5 * dependency-generator.
6 * The two usages have in common that they require
7 * some knowledge of the .tmpl syntax, therefore they
8 * are kept together.
9 *
10 * documentation-frontend
11 * Scans the template file and call kernel-doc for
12 * all occurrences of ![EIF]file
Randy Dunlap6dd16f42007-09-04 21:23:22 -070013 * Beforehand each referenced file is scanned for
14 * any symbols that are exported via these macros:
15 * EXPORT_SYMBOL(), EXPORT_SYMBOL_GPL(), &
16 * EXPORT_SYMBOL_GPL_FUTURE()
Linus Torvalds1da177e2005-04-16 15:20:36 -070017 * This is used to create proper -function and
18 * -nofunction arguments in calls to kernel-doc.
19 * Usage: docproc doc file.tmpl
20 *
21 * dependency-generator:
22 * Scans the template file and list all files
23 * referenced in a format recognized by make.
24 * Usage: docproc depend file.tmpl
25 * Writes dependency information to stdout
26 * in the following format:
27 * file.tmpl src.c src2.c
28 * The filenames are obtained from the following constructs:
29 * !Efilename
30 * !Ifilename
31 * !Dfilename
32 * !Ffilename
Johannes Berge662af42007-10-24 15:08:48 -070033 * !Pfilename
Linus Torvalds1da177e2005-04-16 15:20:36 -070034 *
35 */
36
Johannes Bergeda603f2010-09-11 15:55:22 -070037#define _GNU_SOURCE
Linus Torvalds1da177e2005-04-16 15:20:36 -070038#include <stdio.h>
39#include <stdlib.h>
40#include <string.h>
41#include <ctype.h>
42#include <unistd.h>
43#include <limits.h>
Johannes Bergeda603f2010-09-11 15:55:22 -070044#include <errno.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070045#include <sys/types.h>
46#include <sys/wait.h>
47
48/* exitstatus is used to keep track of any failing calls to kernel-doc,
49 * but execution continues. */
50int exitstatus = 0;
51
52typedef void DFL(char *);
53DFL *defaultline;
54
55typedef void FILEONLY(char * file);
56FILEONLY *internalfunctions;
57FILEONLY *externalfunctions;
58FILEONLY *symbolsonly;
Johannes Bergeda603f2010-09-11 15:55:22 -070059FILEONLY *findall;
Linus Torvalds1da177e2005-04-16 15:20:36 -070060
J.A. Magallon48b9d032005-06-25 14:59:22 -070061typedef void FILELINE(char * file, char * line);
Linus Torvalds1da177e2005-04-16 15:20:36 -070062FILELINE * singlefunctions;
63FILELINE * entity_system;
Johannes Berge662af42007-10-24 15:08:48 -070064FILELINE * docsection;
Linus Torvalds1da177e2005-04-16 15:20:36 -070065
66#define MAXLINESZ 2048
67#define MAXFILES 250
68#define KERNELDOCPATH "scripts/"
69#define KERNELDOC "kernel-doc"
70#define DOCBOOK "-docbook"
Johannes Bergeda603f2010-09-11 15:55:22 -070071#define LIST "-list"
Linus Torvalds1da177e2005-04-16 15:20:36 -070072#define FUNCTION "-function"
73#define NOFUNCTION "-nofunction"
Johannes Berg2e959722007-10-24 15:08:48 -070074#define NODOCSECTIONS "-no-doc-sections"
Johannes Berge946c43a2013-11-12 15:11:12 -080075#define SHOWNOTFOUND "-show-not-found"
Linus Torvalds1da177e2005-04-16 15:20:36 -070076
Jiri Slaby2d510052009-05-31 18:05:34 +020077static char *srctree, *kernsrctree;
Rob Landleybb13be52007-10-09 01:25:18 -050078
Johannes Bergeda603f2010-09-11 15:55:22 -070079static char **all_list = NULL;
80static int all_list_len = 0;
81
82static void consume_symbol(const char *sym)
83{
84 int i;
85
86 for (i = 0; i < all_list_len; i++) {
87 if (!all_list[i])
88 continue;
89 if (strcmp(sym, all_list[i]))
90 continue;
91 all_list[i] = NULL;
92 break;
93 }
94}
95
Trevor Keith4356f482009-09-18 12:49:23 -070096static void usage (void)
Linus Torvalds1da177e2005-04-16 15:20:36 -070097{
98 fprintf(stderr, "Usage: docproc {doc|depend} file\n");
99 fprintf(stderr, "Input is read from file.tmpl. Output is sent to stdout\n");
100 fprintf(stderr, "doc: frontend when generating kernel documentation\n");
101 fprintf(stderr, "depend: generate list of files referenced within file\n");
Jiri Slaby2d510052009-05-31 18:05:34 +0200102 fprintf(stderr, "Environment variable SRCTREE: absolute path to sources.\n");
103 fprintf(stderr, " KBUILD_SRC: absolute path to kernel source tree.\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700104}
105
106/*
Randy Dunlap6dd16f42007-09-04 21:23:22 -0700107 * Execute kernel-doc with parameters given in svec
Linus Torvalds1da177e2005-04-16 15:20:36 -0700108 */
Trevor Keith4356f482009-09-18 12:49:23 -0700109static void exec_kernel_doc(char **svec)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110{
111 pid_t pid;
112 int ret;
113 char real_filename[PATH_MAX + 1];
114 /* Make sure output generated so far are flushed */
115 fflush(stdout);
Randy Dunlap6dd16f42007-09-04 21:23:22 -0700116 switch (pid=fork()) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700117 case -1:
118 perror("fork");
119 exit(1);
120 case 0:
121 memset(real_filename, 0, sizeof(real_filename));
Jiri Slaby2d510052009-05-31 18:05:34 +0200122 strncat(real_filename, kernsrctree, PATH_MAX);
123 strncat(real_filename, "/" KERNELDOCPATH KERNELDOC,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700124 PATH_MAX - strlen(real_filename));
125 execvp(real_filename, svec);
126 fprintf(stderr, "exec ");
127 perror(real_filename);
128 exit(1);
129 default:
130 waitpid(pid, &ret ,0);
131 }
132 if (WIFEXITED(ret))
133 exitstatus |= WEXITSTATUS(ret);
134 else
135 exitstatus = 0xff;
136}
137
138/* Types used to create list of all exported symbols in a number of files */
139struct symbols
140{
141 char *name;
142};
143
144struct symfile
145{
146 char *filename;
147 struct symbols *symbollist;
148 int symbolcnt;
149};
150
151struct symfile symfilelist[MAXFILES];
152int symfilecnt = 0;
153
Trevor Keith4356f482009-09-18 12:49:23 -0700154static void add_new_symbol(struct symfile *sym, char * symname)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700155{
156 sym->symbollist =
Masahiro Yamadabb66fc62014-06-10 19:08:13 +0900157 realloc(sym->symbollist, (sym->symbolcnt + 1) * sizeof(char *));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700158 sym->symbollist[sym->symbolcnt++].name = strdup(symname);
159}
160
161/* Add a filename to the list */
Trevor Keith4356f482009-09-18 12:49:23 -0700162static struct symfile * add_new_file(char * filename)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700163{
164 symfilelist[symfilecnt++].filename = strdup(filename);
165 return &symfilelist[symfilecnt - 1];
166}
Randy Dunlap6dd16f42007-09-04 21:23:22 -0700167
Linus Torvalds1da177e2005-04-16 15:20:36 -0700168/* Check if file already are present in the list */
Trevor Keith4356f482009-09-18 12:49:23 -0700169static struct symfile * filename_exist(char * filename)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700170{
171 int i;
172 for (i=0; i < symfilecnt; i++)
173 if (strcmp(symfilelist[i].filename, filename) == 0)
174 return &symfilelist[i];
175 return NULL;
176}
177
178/*
179 * List all files referenced within the template file.
180 * Files are separated by tabs.
181 */
Trevor Keith4356f482009-09-18 12:49:23 -0700182static void adddep(char * file) { printf("\t%s", file); }
183static void adddep2(char * file, char * line) { line = line; adddep(file); }
184static void noaction(char * line) { line = line; }
185static void noaction2(char * file, char * line) { file = file; line = line; }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700186
187/* Echo the line without further action */
Trevor Keith4356f482009-09-18 12:49:23 -0700188static void printline(char * line) { printf("%s", line); }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700189
190/*
Randy Dunlap6dd16f42007-09-04 21:23:22 -0700191 * Find all symbols in filename that are exported with EXPORT_SYMBOL &
192 * EXPORT_SYMBOL_GPL (& EXPORT_SYMBOL_GPL_FUTURE implicitly).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700193 * All symbols located are stored in symfilelist.
194 */
Trevor Keith4356f482009-09-18 12:49:23 -0700195static void find_export_symbols(char * filename)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196{
197 FILE * fp;
198 struct symfile *sym;
199 char line[MAXLINESZ];
200 if (filename_exist(filename) == NULL) {
201 char real_filename[PATH_MAX + 1];
202 memset(real_filename, 0, sizeof(real_filename));
Rob Landleybb13be52007-10-09 01:25:18 -0500203 strncat(real_filename, srctree, PATH_MAX);
Jiri Slaby2d510052009-05-31 18:05:34 +0200204 strncat(real_filename, "/", PATH_MAX - strlen(real_filename));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700205 strncat(real_filename, filename,
206 PATH_MAX - strlen(real_filename));
207 sym = add_new_file(filename);
208 fp = fopen(real_filename, "r");
Jesper Juhlf0f3ca82011-06-15 11:53:13 +0200209 if (fp == NULL) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210 fprintf(stderr, "docproc: ");
211 perror(real_filename);
Henrik Kretzschmar074a5dd2006-09-29 02:00:56 -0700212 exit(1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700213 }
Randy Dunlap6dd16f42007-09-04 21:23:22 -0700214 while (fgets(line, MAXLINESZ, fp)) {
J.A. Magallon48b9d032005-06-25 14:59:22 -0700215 char *p;
216 char *e;
Randy Dunlap6dd16f42007-09-04 21:23:22 -0700217 if (((p = strstr(line, "EXPORT_SYMBOL_GPL")) != NULL) ||
Masahiro Yamadabb66fc62014-06-10 19:08:13 +0900218 ((p = strstr(line, "EXPORT_SYMBOL")) != NULL)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700219 /* Skip EXPORT_SYMBOL{_GPL} */
220 while (isalnum(*p) || *p == '_')
221 p++;
Randy Dunlap6dd16f42007-09-04 21:23:22 -0700222 /* Remove parentheses & additional whitespace */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700223 while (isspace(*p))
224 p++;
225 if (*p != '(')
226 continue; /* Syntax error? */
227 else
228 p++;
229 while (isspace(*p))
230 p++;
231 e = p;
232 while (isalnum(*e) || *e == '_')
233 e++;
234 *e = '\0';
235 add_new_symbol(sym, p);
236 }
237 }
238 fclose(fp);
239 }
240}
241
242/*
243 * Document all external or internal functions in a file.
244 * Call kernel-doc with following parameters:
245 * kernel-doc -docbook -nofunction function_name1 filename
Randy Dunlap6dd16f42007-09-04 21:23:22 -0700246 * Function names are obtained from all the src files
Linus Torvalds1da177e2005-04-16 15:20:36 -0700247 * by find_export_symbols.
248 * intfunc uses -nofunction
249 * extfunc uses -function
250 */
Trevor Keith4356f482009-09-18 12:49:23 -0700251static void docfunctions(char * filename, char * type)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700252{
253 int i,j;
254 int symcnt = 0;
255 int idx = 0;
256 char **vec;
257
258 for (i=0; i <= symfilecnt; i++)
259 symcnt += symfilelist[i].symbolcnt;
Johannes Berg2e959722007-10-24 15:08:48 -0700260 vec = malloc((2 + 2 * symcnt + 3) * sizeof(char *));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700261 if (vec == NULL) {
262 perror("docproc: ");
263 exit(1);
264 }
265 vec[idx++] = KERNELDOC;
266 vec[idx++] = DOCBOOK;
Johannes Berg2e959722007-10-24 15:08:48 -0700267 vec[idx++] = NODOCSECTIONS;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700268 for (i=0; i < symfilecnt; i++) {
269 struct symfile * sym = &symfilelist[i];
270 for (j=0; j < sym->symbolcnt; j++) {
271 vec[idx++] = type;
Johannes Bergeda603f2010-09-11 15:55:22 -0700272 consume_symbol(sym->symbollist[j].name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700273 vec[idx++] = sym->symbollist[j].name;
274 }
275 }
276 vec[idx++] = filename;
277 vec[idx] = NULL;
278 printf("<!-- %s -->\n", filename);
279 exec_kernel_doc(vec);
280 fflush(stdout);
281 free(vec);
282}
Trevor Keith4356f482009-09-18 12:49:23 -0700283static void intfunc(char * filename) { docfunctions(filename, NOFUNCTION); }
284static void extfunc(char * filename) { docfunctions(filename, FUNCTION); }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700285
286/*
Randy Dunlapc6120932006-11-02 22:07:01 -0800287 * Document specific function(s) in a file.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700288 * Call kernel-doc with the following parameters:
289 * kernel-doc -docbook -function function1 [-function function2]
290 */
Trevor Keith4356f482009-09-18 12:49:23 -0700291static void singfunc(char * filename, char * line)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700292{
293 char *vec[200]; /* Enough for specific functions */
Masahiro Yamadabb66fc62014-06-10 19:08:13 +0900294 int i, idx = 0;
295 int startofsym = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296 vec[idx++] = KERNELDOC;
297 vec[idx++] = DOCBOOK;
Johannes Berge946c43a2013-11-12 15:11:12 -0800298 vec[idx++] = SHOWNOTFOUND;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700299
Masahiro Yamadabb66fc62014-06-10 19:08:13 +0900300 /* Split line up in individual parameters preceded by FUNCTION */
301 for (i=0; line[i]; i++) {
302 if (isspace(line[i])) {
303 line[i] = '\0';
304 startofsym = 1;
305 continue;
306 }
307 if (startofsym) {
308 startofsym = 0;
309 vec[idx++] = FUNCTION;
310 vec[idx++] = &line[i];
311 }
312 }
Johannes Bergeda603f2010-09-11 15:55:22 -0700313 for (i = 0; i < idx; i++) {
Masahiro Yamadabb66fc62014-06-10 19:08:13 +0900314 if (strcmp(vec[i], FUNCTION))
315 continue;
Johannes Bergeda603f2010-09-11 15:55:22 -0700316 consume_symbol(vec[i + 1]);
317 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700318 vec[idx++] = filename;
319 vec[idx] = NULL;
320 exec_kernel_doc(vec);
321}
322
323/*
Johannes Berge662af42007-10-24 15:08:48 -0700324 * Insert specific documentation section from a file.
325 * Call kernel-doc with the following parameters:
326 * kernel-doc -docbook -function "doc section" filename
327 */
Trevor Keith4356f482009-09-18 12:49:23 -0700328static void docsect(char *filename, char *line)
Johannes Berge662af42007-10-24 15:08:48 -0700329{
Johannes Berge946c43a2013-11-12 15:11:12 -0800330 /* kerneldoc -docbook -show-not-found -function "section" file NULL */
331 char *vec[7];
Johannes Berge662af42007-10-24 15:08:48 -0700332 char *s;
333
334 for (s = line; *s; s++)
335 if (*s == '\n')
336 *s = '\0';
337
Namhyung Kimd0f95c72010-10-22 23:32:10 +0900338 if (asprintf(&s, "DOC: %s", line) < 0) {
339 perror("asprintf");
340 exit(1);
341 }
Johannes Bergeda603f2010-09-11 15:55:22 -0700342 consume_symbol(s);
343 free(s);
344
Johannes Berge662af42007-10-24 15:08:48 -0700345 vec[0] = KERNELDOC;
346 vec[1] = DOCBOOK;
Johannes Berge946c43a2013-11-12 15:11:12 -0800347 vec[2] = SHOWNOTFOUND;
348 vec[3] = FUNCTION;
349 vec[4] = line;
350 vec[5] = filename;
351 vec[6] = NULL;
Johannes Berge662af42007-10-24 15:08:48 -0700352 exec_kernel_doc(vec);
353}
354
Johannes Bergeda603f2010-09-11 15:55:22 -0700355static void find_all_symbols(char *filename)
356{
357 char *vec[4]; /* kerneldoc -list file NULL */
358 pid_t pid;
359 int ret, i, count, start;
360 char real_filename[PATH_MAX + 1];
361 int pipefd[2];
362 char *data, *str;
363 size_t data_len = 0;
364
365 vec[0] = KERNELDOC;
366 vec[1] = LIST;
367 vec[2] = filename;
368 vec[3] = NULL;
369
370 if (pipe(pipefd)) {
371 perror("pipe");
372 exit(1);
373 }
374
375 switch (pid=fork()) {
376 case -1:
377 perror("fork");
378 exit(1);
379 case 0:
380 close(pipefd[0]);
381 dup2(pipefd[1], 1);
382 memset(real_filename, 0, sizeof(real_filename));
383 strncat(real_filename, kernsrctree, PATH_MAX);
384 strncat(real_filename, "/" KERNELDOCPATH KERNELDOC,
385 PATH_MAX - strlen(real_filename));
386 execvp(real_filename, vec);
387 fprintf(stderr, "exec ");
388 perror(real_filename);
389 exit(1);
390 default:
391 close(pipefd[1]);
392 data = malloc(4096);
393 do {
394 while ((ret = read(pipefd[0],
395 data + data_len,
396 4096)) > 0) {
397 data_len += ret;
398 data = realloc(data, data_len + 4096);
399 }
400 } while (ret == -EAGAIN);
401 if (ret != 0) {
402 perror("read");
403 exit(1);
404 }
405 waitpid(pid, &ret ,0);
406 }
407 if (WIFEXITED(ret))
408 exitstatus |= WEXITSTATUS(ret);
409 else
410 exitstatus = 0xff;
411
412 count = 0;
413 /* poor man's strtok, but with counting */
414 for (i = 0; i < data_len; i++) {
415 if (data[i] == '\n') {
416 count++;
417 data[i] = '\0';
418 }
419 }
420 start = all_list_len;
421 all_list_len += count;
422 all_list = realloc(all_list, sizeof(char *) * all_list_len);
423 str = data;
424 for (i = 0; i < data_len && start != all_list_len; i++) {
425 if (data[i] == '\0') {
426 all_list[start] = str;
427 str = data + i + 1;
428 start++;
429 }
430 }
431}
432
Johannes Berge662af42007-10-24 15:08:48 -0700433/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700434 * Parse file, calling action specific functions for:
435 * 1) Lines containing !E
436 * 2) Lines containing !I
437 * 3) Lines containing !D
438 * 4) Lines containing !F
Johannes Berge662af42007-10-24 15:08:48 -0700439 * 5) Lines containing !P
Johannes Bergeda603f2010-09-11 15:55:22 -0700440 * 6) Lines containing !C
441 * 7) Default lines - lines not matching the above
Linus Torvalds1da177e2005-04-16 15:20:36 -0700442 */
Trevor Keith4356f482009-09-18 12:49:23 -0700443static void parse_file(FILE *infile)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700444{
445 char line[MAXLINESZ];
J.A. Magallon48b9d032005-06-25 14:59:22 -0700446 char * s;
Randy Dunlap6dd16f42007-09-04 21:23:22 -0700447 while (fgets(line, MAXLINESZ, infile)) {
Jani Nikula868fb192016-05-12 16:15:40 +0300448 if (line[0] != '!') {
449 defaultline(line);
450 continue;
451 }
452
453 s = line + 2;
454 switch (line[1]) {
455 case 'E':
456 while (*s && !isspace(*s)) s++;
457 *s = '\0';
458 externalfunctions(line+2);
459 break;
460 case 'I':
461 while (*s && !isspace(*s)) s++;
462 *s = '\0';
463 internalfunctions(line+2);
464 break;
465 case 'D':
466 while (*s && !isspace(*s)) s++;
467 *s = '\0';
468 symbolsonly(line+2);
469 break;
470 case 'F':
471 /* filename */
472 while (*s && !isspace(*s)) s++;
473 *s++ = '\0';
474 /* function names */
475 while (isspace(*s))
476 s++;
477 singlefunctions(line +2, s);
478 break;
479 case 'P':
480 /* filename */
481 while (*s && !isspace(*s)) s++;
482 *s++ = '\0';
483 /* DOC: section name */
484 while (isspace(*s))
485 s++;
486 docsection(line + 2, s);
487 break;
488 case 'C':
489 while (*s && !isspace(*s)) s++;
490 *s = '\0';
491 if (findall)
492 findall(line+2);
493 break;
494 default:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700495 defaultline(line);
496 }
497 }
498 fflush(stdout);
499}
500
501
502int main(int argc, char *argv[])
503{
Jani Nikula568fb2d2016-05-12 16:15:39 +0300504 const char *subcommand, *filename;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700505 FILE * infile;
Johannes Bergeda603f2010-09-11 15:55:22 -0700506 int i;
Rob Landleybb13be52007-10-09 01:25:18 -0500507
508 srctree = getenv("SRCTREE");
509 if (!srctree)
510 srctree = getcwd(NULL, 0);
Jiri Slaby2d510052009-05-31 18:05:34 +0200511 kernsrctree = getenv("KBUILD_SRC");
Amerigo Wangb767b902009-06-19 03:06:54 -0400512 if (!kernsrctree || !*kernsrctree)
Jiri Slaby2d510052009-05-31 18:05:34 +0200513 kernsrctree = srctree;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700514 if (argc != 3) {
515 usage();
516 exit(1);
517 }
Jani Nikula568fb2d2016-05-12 16:15:39 +0300518
519 subcommand = argv[1];
520 filename = argv[2];
521
Linus Torvalds1da177e2005-04-16 15:20:36 -0700522 /* Open file, exit on error */
Jani Nikula568fb2d2016-05-12 16:15:39 +0300523 infile = fopen(filename, "r");
Masahiro Yamadabb66fc62014-06-10 19:08:13 +0900524 if (infile == NULL) {
525 fprintf(stderr, "docproc: ");
Jani Nikula568fb2d2016-05-12 16:15:39 +0300526 perror(filename);
Masahiro Yamadabb66fc62014-06-10 19:08:13 +0900527 exit(2);
528 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700529
Jani Nikula568fb2d2016-05-12 16:15:39 +0300530 if (strcmp("doc", subcommand) == 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700531 /* Need to do this in two passes.
532 * First pass is used to collect all symbols exported
Randy Dunlap6dd16f42007-09-04 21:23:22 -0700533 * in the various files;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700534 * Second pass generate the documentation.
Randy Dunlap6dd16f42007-09-04 21:23:22 -0700535 * This is required because some functions are declared
Linus Torvalds1da177e2005-04-16 15:20:36 -0700536 * and exported in different files :-((
537 */
538 /* Collect symbols */
539 defaultline = noaction;
540 internalfunctions = find_export_symbols;
541 externalfunctions = find_export_symbols;
542 symbolsonly = find_export_symbols;
543 singlefunctions = noaction2;
Johannes Berge662af42007-10-24 15:08:48 -0700544 docsection = noaction2;
Johannes Bergeda603f2010-09-11 15:55:22 -0700545 findall = find_all_symbols;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700546 parse_file(infile);
547
548 /* Rewind to start from beginning of file again */
549 fseek(infile, 0, SEEK_SET);
550 defaultline = printline;
551 internalfunctions = intfunc;
552 externalfunctions = extfunc;
553 symbolsonly = printline;
554 singlefunctions = singfunc;
Johannes Berge662af42007-10-24 15:08:48 -0700555 docsection = docsect;
Johannes Bergeda603f2010-09-11 15:55:22 -0700556 findall = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700557
558 parse_file(infile);
Johannes Bergeda603f2010-09-11 15:55:22 -0700559
560 for (i = 0; i < all_list_len; i++) {
561 if (!all_list[i])
562 continue;
563 fprintf(stderr, "Warning: didn't use docs for %s\n",
564 all_list[i]);
565 }
Jani Nikula568fb2d2016-05-12 16:15:39 +0300566 } else if (strcmp("depend", subcommand) == 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700567 /* Create first part of dependency chain
568 * file.tmpl */
Jani Nikula568fb2d2016-05-12 16:15:39 +0300569 printf("%s\t", filename);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700570 defaultline = noaction;
571 internalfunctions = adddep;
572 externalfunctions = adddep;
573 symbolsonly = adddep;
574 singlefunctions = adddep2;
Johannes Berge662af42007-10-24 15:08:48 -0700575 docsection = adddep2;
Johannes Bergeda603f2010-09-11 15:55:22 -0700576 findall = adddep;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700577 parse_file(infile);
578 printf("\n");
Jesper Juhlf0f3ca82011-06-15 11:53:13 +0200579 } else {
Jani Nikula568fb2d2016-05-12 16:15:39 +0300580 fprintf(stderr, "Unknown option: %s\n", subcommand);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700581 exit(1);
582 }
583 fclose(infile);
584 fflush(stdout);
585 return exitstatus;
586}