2 * Copyright (c) 1980, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * @(#) Copyright (c) 1980, 1993 The Regents of the University of California. All rights reserved.
34 * @(#)main.c 8.1 (Berkeley) 6/6/93
35 * $FreeBSD: src/usr.sbin/config/main.c,v 1.37.2.3 2001/06/13 00:25:53 cg Exp $
36 * $DragonFly: src/usr.sbin/config/main.c,v 1.6 2003/11/16 11:51:14 eirikn Exp $
39 #include <sys/types.h>
43 #include <sys/param.h>
60 #define CDIR "../../compile/"
63 char destdir[MAXPATHLEN];
64 char srcdir[MAXPATHLEN];
66 static int no_config_clobber = TRUE;
70 static void configfile(void);
71 static void get_srcdir(void);
72 static void usage(void);
75 * Config builds a set of files for building a UNIX
76 * system given a description of the desired system.
79 main(int argc, char **argv)
86 while ((ch = getopt(argc, argv, "d:gprn")) != -1)
90 strlcpy(destdir, optarg, sizeof(destdir));
92 errx(2, "directory already set");
101 /* no_config_clobber is now true by default, no-op */
103 "*** Using obsolete config option '-n' ***\n");
106 no_config_clobber = FALSE;
118 if (freopen(PREFIX = *argv, "r", stdin) == NULL)
119 err(2, "%s", PREFIX);
121 if (*destdir != '\0') {
122 len = strlen(destdir);
123 while (len > 1 && destdir[len - 1] == '/')
124 destdir[--len] = '\0';
127 strlcpy(destdir, CDIR, sizeof(destdir));
128 strlcat(destdir, PREFIX, sizeof(destdir));
131 p = path((char *)NULL);
136 else if ((buf.st_mode & S_IFMT) != S_IFDIR) {
137 errx(2, "%s isn't a directory", p);
139 else if (!no_config_clobber) {
140 char tmp[strlen(p) + 8];
142 fprintf(stderr, "Removing old directory %s: ", p);
144 snprintf(tmp, sizeof(tmp), "rm -rf %s", p);
146 fprintf(stderr, "Failed!\n");
149 fprintf(stderr, "Done.\n");
162 newbus_ioconf(); /* Print ioconf.c */
166 printf("Specify machine type, e.g. ``machine i386''\n");
170 * make symbolic links in compilation directory
171 * for "sys" (to make genassym.c work along with #include <sys/xxx>)
172 * and similarly for "machine".
175 char xxx[MAXPATHLEN];
177 (void)snprintf(xxx, sizeof(xxx), "../../%s/include",
180 (void)snprintf(xxx, sizeof(xxx), "%s/%s/include",
181 srcdir, machinename);
182 (void) symlink(xxx, path("machine"));
186 * XXX check directory structure for architecture subdirectories and
187 * create the symlinks automatically XXX
190 char xxx[MAXPATHLEN];
192 (void)snprintf(xxx, sizeof(xxx), "../../../../../net/i4b/include/%s",
195 (void)snprintf(xxx, sizeof(xxx), "%s/net/i4b/include/%s",
196 srcdir, machinename);
197 (void) mkdir(path("net"), 0755);
198 (void) mkdir(path("net/i4b"), 0755);
199 (void) mkdir(path("net/i4b/include"), 0755);
200 (void) symlink(xxx, path("net/i4b/include/machine"));
204 static char *ary[] = { "linux", "svr4" };
205 char xxx[MAXPATHLEN];
209 for (i = 0; i < sizeof(ary)/sizeof(ary[0]); ++i) {
211 snprintf(xxx, sizeof(xxx), "../../emulation/%s/%s",
212 ary[i], machinename);
214 snprintf(xxx, sizeof(xxx), "%s/emulation/%s/%s",
215 srcdir, ary[i], machinename);
217 snprintf(yyy, sizeof(yyy), "arch_%s", ary[i]);
218 symlink(xxx, path(yyy));
222 options(); /* make options .h files */
223 makefile(); /* build Makefile */
224 headers(); /* make a lot of .h files */
225 configfile(); /* put config file into kernel*/
226 printf("Kernel build directory is %s\n", p);
232 * determine the root of the kernel source tree
233 * and save that in srcdir.
238 if (realpath("../..", srcdir) == NULL)
239 errx(2, "Unable to find root of source tree");
245 fprintf(stderr, "usage: config [-gpr] [-d destdir] sysname\n");
251 * returns EOF on end of file
252 * NULL on end of line
253 * pointer to the word otherwise
256 get_word(register FILE *fp)
258 static char line[80];
264 while ((ch = getc(fp)) != EOF)
265 if (ch != ' ' && ch != '\t')
268 return ((char *)EOF);
283 while ((ch = getc(fp)) != EOF) {
290 return ((char *)EOF);
291 (void) ungetc(ch, fp);
297 * like get_word but will accept something in double or single quotes
298 * (to allow embedded spaces).
301 get_quoted_word(register FILE *fp)
303 static char line[256];
309 while ((ch = getc(fp)) != EOF)
310 if (ch != ' ' && ch != '\t')
313 return ((char *)EOF);
327 if (ch == '"' || ch == '\'') {
328 register int quote = ch;
330 while ((ch = getc(fp)) != EOF) {
335 printf("config: missing quote reading `%s'\n",
343 while ((ch = getc(fp)) != EOF) {
349 (void) ungetc(ch, fp);
353 return ((char *)EOF);
358 * prepend the path to a filename
365 cp = malloc((size_t)(strlen(destdir) + (file ? strlen(file) : 0) + 2));
366 (void) strcpy(cp, destdir);
368 (void) strcat(cp, "/");
369 (void) strcat(cp, file);
381 fi = fopen(PREFIX, "r");
383 err(2, "%s", PREFIX);
384 fo = fopen(p=path("config.c.new"), "w");
387 fprintf(fo, "#include \"opt_config.h\"\n");
388 fprintf(fo, "#ifdef INCLUDE_CONFIG_FILE \n");
389 fprintf(fo, "static const char config[] = \"\\\n");
390 fprintf(fo, "START CONFIG FILE %s\\n\\\n___", PREFIX);
391 while (EOF != (i=getc(fi))) {
393 fprintf(fo, "\\n\\\n___");
394 } else if (i == '\"') {
396 } else if (i == '\\') {
402 fprintf(fo, "\\n\\\nEND CONFIG FILE %s\\n\\\n", PREFIX);
403 fprintf(fo, "\";\n");
404 fprintf(fo, "\n#endif /* INCLUDE_CONFIG_FILE */\n");
407 moveifchanged(path("config.c.new"), path("config.c"));
412 * compare two files; rename if changed.
415 moveifchanged(const char *from_name, const char *to_name)
420 struct stat from_sb, to_sb;
425 if ((from_fd = open(from_name, O_RDONLY)) < 0)
426 err(EX_OSERR, "moveifchanged open(%s)", from_name);
428 if ((to_fd = open(to_name, O_RDONLY)) < 0)
431 if (!changed && fstat(from_fd, &from_sb) < 0)
432 err(EX_OSERR, "moveifchanged fstat(%s)", from_name);
434 if (!changed && fstat(to_fd, &to_sb) < 0)
435 err(EX_OSERR, "moveifchanged fstat(%s)", to_name);
437 if (!changed && from_sb.st_size != to_sb.st_size)
440 tsize = (size_t)from_sb.st_size;
443 p = mmap(NULL, tsize, PROT_READ, MAP_SHARED, from_fd, (off_t)0);
445 #define MAP_FAILED ((caddr_t) -1)
448 err(EX_OSERR, "mmap %s", from_name);
449 q = mmap(NULL, tsize, PROT_READ, MAP_SHARED, to_fd, (off_t)0);
451 err(EX_OSERR, "mmap %s", to_name);
453 changed = memcmp(p, q, tsize);
458 if (rename(from_name, to_name) < 0)
459 err(EX_OSERR, "rename(%s, %s)", from_name, to_name);
461 if (unlink(from_name) < 0)
462 err(EX_OSERR, "unlink(%s)", from_name);