1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25
26 #ifdef TEAMWARE_MAKE_CMN
27
28 /*
29 * Included files
30 */
31 #include <arpa/inet.h>
32 #include <mk/defs.h>
33 #include <mksh/misc.h>
34 #include <netdb.h>
35 #include <netinet/in.h>
36 #include <sys/socket.h>
37 #include <sys/stat.h>
38 #include <sys/types.h>
39 #include <sys/utsname.h>
40 #include <rpc/rpc.h> /* host2netname(), netname2host() */
41 #ifdef linux
42 # include <unistd.h> /* getdomainname() */
43 #endif
44
45 /*
46 * Defined macros
47 */
48
49 /*
50 * typedefs & structs
51 */
52
53 /*
54 * Static variables
55 */
56
57 /*
58 * File table of contents
59 */
60 static int get_max(wchar_t **ms_address, wchar_t *hostname);
61 static Boolean pskip_comment(wchar_t **cp_address);
62 static void pskip_till_next_word(wchar_t **cp);
63 static Boolean pskip_white_space(wchar_t **cp_address);
64
65
66 /*
67 * read_make_machines(Name make_machines_name)
68 *
69 * For backwards compatibility w/ PMake 1.x, when DMake 2.x is
70 * being run in parallel mode, DMake should parse the PMake startup
71 * file $(HOME)/.make.machines to get the PMake max jobs.
72 *
73 * Return value:
74 * int of PMake max jobs
75 *
76 * Parameters:
77 * make_machines_name Name of .make.machines file
78 *
79 */
80 int
81 read_make_machines(Name make_machines_name)
82 {
83 wchar_t c;
84 Boolean default_make_machines;
85 struct hostent *hp;
86 wchar_t local_host[MAX_HOSTNAMELEN + 1];
87 char local_host_mb[MAX_HOSTNAMELEN + 1] = "";
88 int local_host_wslen;
89 wchar_t full_host[MAXNETNAMELEN + 1];
90 int full_host_wslen = 0;
91 char *homedir;
92 Name MAKE_MACHINES;
93 struct stat make_machines_buf;
94 FILE *make_machines_file;
95 wchar_t *make_machines_list = NULL;
96 char *make_machines_list_mb = NULL;
97 wchar_t make_machines_path[MAXPATHLEN];
98 char mb_make_machines_path[MAXPATHLEN];
99 wchar_t *mp;
100 wchar_t *ms;
101 int pmake_max_jobs = 0;
102 struct utsname uts_info;
103
104
105 MBSTOWCS(wcs_buffer, NOCATGETS("MAKE_MACHINES"));
106 MAKE_MACHINES = GETNAME(wcs_buffer, FIND_LENGTH);
107 /* Did the user specify a .make.machines file on the command line? */
108 default_make_machines = false;
109 if (make_machines_name == NULL) {
110 /* Try reading the default .make.machines file, in $(HOME). */
111 homedir = getenv(NOCATGETS("HOME"));
112 if ((homedir != NULL) && (strlen(homedir) < (sizeof(mb_make_machines_path) - 16))) {
113 sprintf(mb_make_machines_path,
114 NOCATGETS("%s/.make.machines"), homedir);
115 MBSTOWCS(make_machines_path, mb_make_machines_path);
116 make_machines_name = GETNAME(make_machines_path, FIND_LENGTH);
117 default_make_machines = true;
118 }
119 if (make_machines_name == NULL) {
120 /*
121 * No $(HOME)/.make.machines file.
122 * Return 0 for PMake max jobs.
123 */
124 return(0);
125 }
126 }
127 /*
128 make_machines_list_mb = getenv(MAKE_MACHINES->string_mb);
129 */
130 /* Open the .make.machines file. */
131 if ((make_machines_file = fopen(make_machines_name->string_mb, "r")) == NULL) {
132 if (!default_make_machines) {
133 /* Error opening .make.machines file. */
134 fatal(catgets(catd, 1, 314, "Open of %s failed: %s"),
135 make_machines_name->string_mb,
136 errmsg(errno));
137 } else {
138 /*
139 * No $(HOME)/.make.machines file.
140 * Return 0 for PMake max jobs.
141 */
142 return(0);
143 }
144 /* Stat the .make.machines file to get the size of the file. */
145 } else if (fstat(fileno(make_machines_file), &make_machines_buf) < 0) {
146 /* Error stat'ing .make.machines file. */
147 fatal(catgets(catd, 1, 315, "Stat of %s failed: %s"),
148 make_machines_name->string_mb,
149 errmsg(errno));
150 } else {
151 /* Allocate memory for "MAKE_MACHINES=<contents of .m.m>" */
152 make_machines_list_mb =
153 (char *) getmem((int) (strlen(MAKE_MACHINES->string_mb) +
154 2 +
155 make_machines_buf.st_size));
156 sprintf(make_machines_list_mb,
157 "%s=",
158 MAKE_MACHINES->string_mb);
159 /* Read in the .make.machines file. */
160 if (fread(make_machines_list_mb + strlen(MAKE_MACHINES->string_mb) + 1,
161 sizeof(char),
162 (int) make_machines_buf.st_size,
163 make_machines_file) != make_machines_buf.st_size) {
164 /*
165 * Error reading .make.machines file.
166 * Return 0 for PMake max jobs.
167 */
168 warning(catgets(catd, 1, 316, "Unable to read %s"),
169 make_machines_name->string_mb);
170 (void) fclose(make_machines_file);
171 retmem_mb((caddr_t) make_machines_list_mb);
172 return(0);
173 } else {
174 (void) fclose(make_machines_file);
175 /* putenv "MAKE_MACHINES=<contents of .m.m>" */
176 *(make_machines_list_mb +
177 strlen(MAKE_MACHINES->string_mb) +
178 1 +
179 make_machines_buf.st_size) = (int) nul_char;
180 if (putenv(make_machines_list_mb) != 0) {
181 warning(catgets(catd, 1, 317, "Couldn't put contents of %s in environment"),
182 make_machines_name->string_mb);
183 } else {
184 make_machines_list_mb += strlen(MAKE_MACHINES->string_mb) + 1;
185 make_machines_list = ALLOC_WC(strlen(make_machines_list_mb) + 1);
186 (void) mbstowcs(make_machines_list,
187 make_machines_list_mb,
188 (strlen(make_machines_list_mb) + 1));
189 }
190 }
191 }
192
193 uname(&uts_info);
194 strcpy(local_host_mb, &uts_info.nodename[0]);
195 MBSTOWCS(local_host, local_host_mb);
196 local_host_wslen = wslen(local_host);
197
198 // There is no getdomainname() function on Solaris.
199 // And netname2host() function does not work on Linux.
200 // So we have to use different APIs.
201 #ifdef linux
202 if (getdomainname(mbs_buffer, MAXNETNAMELEN+1) == 0) {
203 sprintf(mbs_buffer2, "%s.%s", local_host_mb, mbs_buffer);
204 #else
205 if (host2netname(mbs_buffer, NULL, NULL) &&
206 netname2host(mbs_buffer, mbs_buffer2, MAXNETNAMELEN+1)) {
207 #endif
208 MBSTOWCS(full_host, mbs_buffer2);
209 full_host_wslen = wslen(full_host);
210 }
211
212 for (ms = make_machines_list;
213 (ms) && (*ms );
214 ) {
215 /*
216 * Skip white space and comments till you reach
217 * a machine name.
218 */
219 pskip_till_next_word(&ms);
220
221 /*
222 * If we haven't reached the end of file, process the
223 * machine name.
224 */
225 if (*ms) {
226 /*
227 * If invalid machine name decrement counter
228 * and skip line.
229 */
230 mp = ms;
231 SKIPWORD(ms);
232 c = *ms;
233 *ms++ = '\0'; /* Append null to machine name. */
234 /*
235 * If this was the beginning of a comment
236 * (we overwrote a # sign) and it's not
237 * end of line yet, shift the # sign.
238 */
239 if ((c == '#') && (*ms != '\n') && (*ms)) {
240 *ms = '#';
241 }
242 WCSTOMBS(mbs_buffer, mp);
243 /*
244 * Print "Ignoring unknown host" if:
245 * 1) hostname is longer than MAX_HOSTNAMELEN, or
246 * 2) hostname is unknown
247 */
248 if ((wslen(mp) > MAX_HOSTNAMELEN) ||
249 ((hp = gethostbyname(mbs_buffer)) == NULL)) {
250 warning(catgets(catd, 1, 318, "Ignoring unknown host %s"),
251 mbs_buffer);
252 SKIPTOEND(ms);
253 /* Increment ptr if not end of file. */
254 if (*ms) {
255 ms++;
256 }
257 } else {
258 /* Compare current hostname with local_host. */
259 if (wslen(mp) == local_host_wslen &&
260 IS_WEQUALN(mp, local_host, local_host_wslen)) {
261 /*
262 * Bingo, local_host is in .make.machines.
263 * Continue reading.
264 */
265 pmake_max_jobs = PMAKE_DEF_MAX_JOBS;
266 /* Compare current hostname with full_host. */
267 } else if (wslen(mp) == full_host_wslen &&
268 IS_WEQUALN(mp, full_host, full_host_wslen)) {
269 /*
270 * Bingo, full_host is in .make.machines.
271 * Continue reading.
272 */
273 pmake_max_jobs = PMAKE_DEF_MAX_JOBS;
274 } else {
275 if (c != '\n') {
276 SKIPTOEND(ms);
277 if (*ms) {
278 ms++;
279 }
280 }
281 continue;
282 }
283 /* If we get here, local_host is in .make.machines. */
284 if (c != '\n') {
285 /* Now look for keyword 'max'. */
286 MBSTOWCS(wcs_buffer, NOCATGETS("max"));
287 SKIPSPACE(ms);
288 while ((*ms != '\n') && (*ms)) {
289 if (*ms == '#') {
290 pskip_comment(&ms);
291 } else if (IS_WEQUALN(ms, wcs_buffer, 3)) {
292 /* Skip "max". */
293 ms += 3;
294 pmake_max_jobs = get_max(&ms, mp);
295 SKIPSPACE(ms);
296 } else {
297 warning(catgets(catd, 1, 322, "unknown option for host %s"), mbs_buffer);
298 SKIPTOEND(ms);
299 break;
300 }
301 }
302 }
303 break; /* out of outermost for() loop. */
304 }
305 }
306 }
307 retmem(make_machines_list);
308 return(pmake_max_jobs);
309 }
310
311 /*
312 * pskip_till_next_word(cp)
313 *
314 * Parameters:
315 * cp the address of the string pointer.
316 *
317 * On return:
318 * cp points to beginning of machine name.
319 *
320 */
321 static void
322 pskip_till_next_word(wchar_t **cp)
323 {
324 /*
325 * Keep recursing until all combinations of white spaces
326 * and comments have been skipped.
327 */
328 if (pskip_white_space(cp) || pskip_comment(cp)) {
329 pskip_till_next_word(cp);
330 }
331 }
332
333 /*
334 * pskip_white_space(cp_address)
335 *
336 * Advances the string pointer so that it points to the first
337 * non white character (space/tab/linefeed).
338 *
339 * Parameters:
340 * cp_address the address of the string pointer.
341 *
342 * Return Value:
343 * True if the pointer was changed.
344 *
345 */
346 static Boolean
347 pskip_white_space(wchar_t **cp_address)
348 {
349 wchar_t *cp = *cp_address;
350
351 while (*cp && iswspace(*cp)) {
352 cp++;
353 }
354 /* Have we skipped any characters? */
355 if (cp != *cp_address) {
356 *cp_address = cp;
357 return(true);
358 } else {
359 return(false);
360 }
361 }
362
363 /*
364 * pskip_comment(cp_address)
365 *
366 * If cp_address is pointing to '#' (the beginning of a comment),
367 * increment the pointer till you reach end of line.
368 *
369 * Parameters:
370 * cp_address the address of the string pointer.
371 *
372 * Return Value:
373 * True if the pointer was changed.
374 *
375 */
376 static Boolean
377 pskip_comment(wchar_t **cp_address)
378 {
379 wchar_t *cp = *cp_address;
380
381 /* Is this the beginning of a comment? Skip till end of line. */
382 if (*cp == '#') {
383 SKIPTOEND(cp);
384 }
385 /* Have we skipped a comment line? */
386 if (cp != *cp_address) {
387 *cp_address = cp;
388 return(true);
389 } else {
390 return(false);
391 }
392 }
393
394 static int
395 get_max(wchar_t **ms_address, wchar_t *hostname)
396 {
397 wchar_t *ms = *ms_address;
398 int limit = PMAKE_DEF_MAX_JOBS; /* Default setting. */
399
400 WCSTOMBS(mbs_buffer, hostname);
401 /* Look for `='. */
402 SKIPSPACE(ms);
403 if ((!*ms) || (*ms == '\n') || (*ms != '=')) {
404 SKIPTOEND(ms);
405 warning(catgets(catd, 1, 319, "expected `=' after max, ignoring rest of line for host %s"),
406 mbs_buffer);
407 *ms_address = ms;
408 return((int) limit);
409 } else {
410 ms++;
411 SKIPSPACE(ms);
412 if ((*ms != '\n') && (*ms != '\0')) {
413 /* We've found, hopefully, a valid "max" value. */
414 limit = (int) wcstol(ms, &ms, 10);
415 if (limit < 1) {
416 limit = PMAKE_DEF_MAX_JOBS;
417 warning(catgets(catd, 1, 320, "max value cannot be less than or equal to zero for host %s"), mbs_buffer);
418 }
419 } else {
420 /* No "max" value after "max=". */
421 warning(catgets(catd, 1, 321, "no max value specified for host %s"), mbs_buffer);
422 }
423 *ms_address = ms;
424 return(limit);
425 }
426 }
427
428 #endif
429