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