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
35 static const char copyright[] =
36 "@(#) Copyright (c) 1980, 1993\n\
37 The Regents of the University of California. All rights reserved.\n";
42 static char sccsid[] = "@(#)main.c 8.1 (Berkeley) 6/6/93";
44 static const char rcsid[] =
45 "$FreeBSD: src/usr.sbin/config/main.c,v 1.37.2.3 2001/06/13 00:25:53 cg Exp $";
48 #include <sys/types.h>
52 #include <sys/param.h>
69 #define CDIR "../../compile/"
72 char destdir[MAXPATHLEN];
73 char srcdir[MAXPATHLEN];
75 static int no_config_clobber = TRUE;
79 static void configfile __P((void));
80 static void get_srcdir __P((void));
81 static void usage __P((void));
84 * Config builds a set of files for building a UNIX
85 * system given a description of the desired system.
97 while ((ch = getopt(argc, argv, "d:gprn")) != -1)
100 if (*destdir == '\0')
101 strlcpy(destdir, optarg, sizeof(destdir));
103 errx(2, "directory already set");
112 /* no_config_clobber is now true by default, no-op */
114 "*** Using obsolete config option '-n' ***\n");
117 no_config_clobber = FALSE;
129 if (freopen(PREFIX = *argv, "r", stdin) == NULL)
130 err(2, "%s", PREFIX);
132 if (*destdir != '\0') {
133 len = strlen(destdir);
134 while (len > 1 && destdir[len - 1] == '/')
135 destdir[--len] = '\0';
138 strlcpy(destdir, CDIR, sizeof(destdir));
139 strlcat(destdir, PREFIX, sizeof(destdir));
142 p = path((char *)NULL);
147 else if ((buf.st_mode & S_IFMT) != S_IFDIR) {
148 errx(2, "%s isn't a directory", p);
150 else if (!no_config_clobber) {
151 char tmp[strlen(p) + 8];
153 fprintf(stderr, "Removing old directory %s: ", p);
155 snprintf(tmp, sizeof(tmp), "rm -rf %s", p);
157 fprintf(stderr, "Failed!\n");
160 fprintf(stderr, "Done.\n");
173 newbus_ioconf(); /* Print ioconf.c */
177 printf("Specify machine type, e.g. ``machine i386''\n");
181 * make symbolic links in compilation directory
182 * for "sys" (to make genassym.c work along with #include <sys/xxx>)
183 * and similarly for "machine".
186 char xxx[MAXPATHLEN];
188 (void)snprintf(xxx, sizeof(xxx), "../../%s/include",
191 (void)snprintf(xxx, sizeof(xxx), "%s/%s/include",
192 srcdir, machinename);
193 (void) symlink(xxx, path("machine"));
195 options(); /* make options .h files */
196 makefile(); /* build Makefile */
197 headers(); /* make a lot of .h files */
198 configfile(); /* put config file into kernel*/
199 printf("Kernel build directory is %s\n", p);
205 * determine the root of the kernel source tree
206 * and save that in srcdir.
211 if (realpath("../..", srcdir) == NULL)
212 errx(2, "Unable to find root of source tree");
218 fprintf(stderr, "usage: config [-gpr] [-d destdir] sysname\n");
224 * returns EOF on end of file
225 * NULL on end of line
226 * pointer to the word otherwise
232 static char line[80];
238 while ((ch = getc(fp)) != EOF)
239 if (ch != ' ' && ch != '\t')
242 return ((char *)EOF);
257 while ((ch = getc(fp)) != EOF) {
264 return ((char *)EOF);
265 (void) ungetc(ch, fp);
271 * like get_word but will accept something in double or single quotes
272 * (to allow embedded spaces).
278 static char line[256];
284 while ((ch = getc(fp)) != EOF)
285 if (ch != ' ' && ch != '\t')
288 return ((char *)EOF);
302 if (ch == '"' || ch == '\'') {
303 register int quote = ch;
305 while ((ch = getc(fp)) != EOF) {
310 printf("config: missing quote reading `%s'\n",
318 while ((ch = getc(fp)) != EOF) {
324 (void) ungetc(ch, fp);
328 return ((char *)EOF);
333 * prepend the path to a filename
341 cp = malloc((size_t)(strlen(destdir) + (file ? strlen(file) : 0) + 2));
342 (void) strcpy(cp, destdir);
344 (void) strcat(cp, "/");
345 (void) strcat(cp, file);
357 fi = fopen(PREFIX, "r");
359 err(2, "%s", PREFIX);
360 fo = fopen(p=path("config.c.new"), "w");
363 fprintf(fo, "#include \"opt_config.h\"\n");
364 fprintf(fo, "#ifdef INCLUDE_CONFIG_FILE \n");
365 fprintf(fo, "static const char config[] = \"\\\n");
366 fprintf(fo, "START CONFIG FILE %s\\n\\\n___", PREFIX);
367 while (EOF != (i=getc(fi))) {
369 fprintf(fo, "\\n\\\n___");
370 } else if (i == '\"') {
372 } else if (i == '\\') {
378 fprintf(fo, "\\n\\\nEND CONFIG FILE %s\\n\\\n", PREFIX);
379 fprintf(fo, "\";\n");
380 fprintf(fo, "\n#endif /* INCLUDE_CONFIG_FILE */\n");
383 moveifchanged(path("config.c.new"), path("config.c"));
388 * compare two files; rename if changed.
391 moveifchanged(const char *from_name, const char *to_name)
396 struct stat from_sb, to_sb;
401 if ((from_fd = open(from_name, O_RDONLY)) < 0)
402 err(EX_OSERR, "moveifchanged open(%s)", from_name);
404 if ((to_fd = open(to_name, O_RDONLY)) < 0)
407 if (!changed && fstat(from_fd, &from_sb) < 0)
408 err(EX_OSERR, "moveifchanged fstat(%s)", from_name);
410 if (!changed && fstat(to_fd, &to_sb) < 0)
411 err(EX_OSERR, "moveifchanged fstat(%s)", to_name);
413 if (!changed && from_sb.st_size != to_sb.st_size)
416 tsize = (size_t)from_sb.st_size;
419 p = mmap(NULL, tsize, PROT_READ, MAP_SHARED, from_fd, (off_t)0);
421 #define MAP_FAILED ((caddr_t) -1)
424 err(EX_OSERR, "mmap %s", from_name);
425 q = mmap(NULL, tsize, PROT_READ, MAP_SHARED, to_fd, (off_t)0);
427 err(EX_OSERR, "mmap %s", to_name);
429 changed = memcmp(p, q, tsize);
434 if (rename(from_name, to_name) < 0)
435 err(EX_OSERR, "rename(%s, %s)", from_name, to_name);
437 if (unlink(from_name) < 0)
438 err(EX_OSERR, "unlink(%s)", from_name);