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1 | /* $Id$ | |
2 | * | |
3 | * Deal with incremental updates | |
4 | * | |
5 | * Copyright (C) 1989-1998 by the Massachusetts Institute of Technology | |
6 | * For copying and distribution information, please see the file | |
7 | * <mit-copyright.h>. | |
8 | */ | |
9 | ||
10 | #include <mit-copyright.h> | |
11 | #include "mr_server.h" | |
12 | #include "query.h" | |
13 | #include "qrtn.h" | |
14 | ||
15 | #include <signal.h> | |
16 | #include <stdio.h> | |
17 | #include <stdlib.h> | |
18 | #include <string.h> | |
19 | #include <unistd.h> | |
20 | ||
21 | EXEC SQL INCLUDE sqlca; | |
22 | ||
23 | RCSID("$Header$"); | |
24 | ||
25 | extern char *whoami; | |
26 | extern char *table_name[]; | |
27 | extern int num_tables; | |
28 | ||
29 | int inc_pid = 0; | |
30 | int inc_running = 0; | |
31 | time_t inc_started; | |
32 | ||
33 | #define MAXARGC 16 | |
34 | ||
35 | EXEC SQL WHENEVER SQLERROR DO dbmserr(); | |
36 | ||
37 | EXEC SQL BEGIN DECLARE SECTION; | |
38 | /* structures to save before args */ | |
39 | static char *before[MAXARGC]; | |
40 | static int beforec; | |
41 | static enum tables beforetable; | |
42 | ||
43 | /* structures to save after args */ | |
44 | static char *after[MAXARGC]; | |
45 | static int afterc; | |
46 | EXEC SQL END DECLARE SECTION; | |
47 | ||
48 | /* structures to save entire sets of incremental changes */ | |
49 | struct save_queue *incremental_sq = NULL; | |
50 | struct save_queue *incremental_exec = NULL; | |
51 | struct iupdate { | |
52 | char *table; | |
53 | int beforec; | |
54 | char **before; | |
55 | int afterc; | |
56 | char **after; | |
57 | char *service; | |
58 | }; | |
59 | ||
60 | void next_incremental(void); | |
61 | char **copy_argv(char **argv, int argc); | |
62 | void free_argv(char **argv, int argc); | |
63 | int table_num(char *table); | |
64 | ||
65 | void incremental_init(void) | |
66 | { | |
67 | int i; | |
68 | ||
69 | if (!incremental_sq) | |
70 | incremental_sq = sq_create(); | |
71 | if (!incremental_exec) | |
72 | incremental_exec = sq_create(); | |
73 | ||
74 | for (i = 0; i < MAXARGC; i++) | |
75 | { | |
76 | before[i] = xmalloc(MAX_FIELD_WIDTH); | |
77 | after[i] = xmalloc(MAX_FIELD_WIDTH); | |
78 | } | |
79 | } | |
80 | ||
81 | ||
82 | /* record the state of a table row before it is changed */ | |
83 | ||
84 | void incremental_before(enum tables table, char *qual, char **argv) | |
85 | { | |
86 | EXEC SQL BEGIN DECLARE SECTION; | |
87 | int id; | |
88 | EXEC SQL END DECLARE SECTION; | |
89 | ||
90 | char *name, *name2; | |
91 | ||
92 | beforetable = table; | |
93 | ||
94 | switch (table) | |
95 | { | |
96 | case USERS_TABLE: | |
97 | sprintf(stmt_buf, "SELECT u.login, u.unix_uid, u.shell, " | |
98 | "u.winconsoleshell, u.last, u.first, u.middle, u.status, " | |
99 | "u.clearid, u.type, u.users_id, u.winhomedir, u.winprofiledir, " | |
100 | "u.potype FROM users u WHERE %s", qual); | |
101 | dosql(before); | |
102 | beforec = 14; | |
103 | break; | |
104 | case MACHINE_TABLE: | |
105 | sprintf(stmt_buf, "SELECT m.name, m.vendor, m.mach_id FROM machine m " | |
106 | "WHERE %s", qual); | |
107 | dosql(before); | |
108 | beforec = 3; | |
109 | break; | |
110 | case CLUSTERS_TABLE: | |
111 | sprintf(stmt_buf, "SELECT c.name, c.description, c.location, " | |
112 | "c.clu_id FROM clusters c WHERE %s", qual); | |
113 | dosql(before); | |
114 | beforec = 4; | |
115 | break; | |
116 | case CONTAINERS_TABLE: | |
117 | sprintf(stmt_buf, "SELECT c.name, c.description, c.location, c.contact, " | |
118 | "c.acl_type, c.acl_id, c.cnt_id, c.list_id FROM containers c " | |
119 | "WHERE %s", qual); | |
120 | dosql(before); | |
121 | beforec = 8; | |
122 | name = xmalloc(0); | |
123 | id = atoi(before[5]); | |
124 | if (!strncmp(before[4], "USER", 4)) | |
125 | { | |
126 | id_to_name(id, USERS_TABLE, &name); | |
127 | strcpy(before[5], name); | |
128 | } | |
129 | else if (!strncmp(before[4], "LIST", 4)) | |
130 | { | |
131 | id_to_name(id, LIST_TABLE, &name); | |
132 | strcpy(before[5], name); | |
133 | } | |
134 | else if (!strncmp(before[4], "KERBEROS", 8)) | |
135 | { | |
136 | id_to_name(id, STRINGS_TABLE, &name); | |
137 | strcpy(before[5], name); | |
138 | } | |
139 | id = atoi(before[7]); | |
140 | id_to_name(id, LIST_TABLE, &name); | |
141 | strcpy(before[7], name); | |
142 | break; | |
143 | case MCMAP_TABLE: | |
144 | strcpy(before[0], argv[0]); | |
145 | strcpy(before[1], argv[1]); | |
146 | beforec = 2; | |
147 | break; | |
148 | case MCNTMAP_TABLE: | |
149 | strcpy(before[0], argv[0]); | |
150 | strcpy(before[1], argv[1]); | |
151 | name_to_id(before[0], MACHINE_TABLE, &id); | |
152 | sprintf(before[2], "%d", id); | |
153 | name_to_id(before[1], CONTAINERS_TABLE, &id); | |
154 | sprintf(before[3], "%d", id); | |
155 | name = xmalloc(0); | |
156 | EXEC SQL SELECT list_id INTO :before[4] FROM containers | |
157 | WHERE cnt_id = :id; | |
158 | id = atoi(before[4]); | |
159 | id_to_name(id, LIST_TABLE, &name); | |
160 | strcpy(before[4], name); | |
161 | beforec = 5; | |
162 | break; | |
163 | case SVC_TABLE: | |
164 | strcpy(before[0], argv[0]); | |
165 | strcpy(before[1], argv[1]); | |
166 | strcpy(before[2], argv[2]); | |
167 | beforec = 3; | |
168 | break; | |
169 | case FILESYS_TABLE: | |
170 | sprintf(stmt_buf, "SELECT fs.label, fs.type, fs.mach_id, fs.name, " | |
171 | "fs.mount, fs.rwaccess, fs.comments, fs.owner, fs.owners, " | |
172 | "fs.createflg, fs.lockertype, fs.filsys_id FROM filesys fs " | |
173 | "WHERE %s", qual); | |
174 | dosql(before); | |
175 | name = xmalloc(0); | |
176 | id = atoi(before[2]); | |
177 | id_to_name(id, MACHINE_TABLE, &name); | |
178 | strcpy(before[2], name); | |
179 | id = atoi(before[7]); | |
180 | id_to_name(id, USERS_TABLE, &name); | |
181 | strcpy(before[7], name); | |
182 | id = atoi(before[8]); | |
183 | id_to_name(id, LIST_TABLE, &name); | |
184 | strcpy(before[8], name); | |
185 | free(name); | |
186 | beforec = 12; | |
187 | break; | |
188 | case QUOTA_TABLE: | |
189 | strcpy(before[0], "?"); | |
190 | strcpy(before[1], argv[1]); | |
191 | strcpy(before[2], "?"); | |
192 | sprintf(stmt_buf, "SELECT q.quota, fs.name FROM quota q, filesys fs " | |
193 | "WHERE %s AND fs.filsys_id = q.filsys_id", qual); | |
194 | dosql(&(before[3])); | |
195 | strcpy(before[2], argv[1]); | |
196 | beforec = 5; | |
197 | break; | |
198 | case LIST_TABLE: | |
199 | sprintf(stmt_buf, "SELECT l.name, l.active, l.publicflg, l.hidden, " | |
200 | "l.maillist, l.grouplist, l.gid, l.acl_type, l.acl_id, " | |
201 | "l.description, l.list_id, l.nfsgroup FROM list l WHERE %s", qual); | |
202 | dosql(before); | |
203 | beforec = 12; | |
204 | break; | |
205 | case IMEMBERS_TABLE: | |
206 | id = (int) argv[0]; | |
207 | sprintf(stmt_buf, "SELECT active, publicflg, hidden, maillist, " | |
208 | "grouplist, gid, nfsgroup FROM list WHERE list_id = %d", id); | |
209 | dosql(&(before[3])); | |
210 | name = xmalloc(0); | |
211 | id_to_name(id, LIST_TABLE, &name); | |
212 | name2 = xmalloc(0); | |
213 | strcpy(before[0], name); | |
214 | strcpy(before[1], argv[1]); | |
215 | id = (int) argv[2]; | |
216 | beforec = 11; | |
217 | if (!strcmp(before[1], "USER")) | |
218 | { | |
219 | id_to_name(id, USERS_TABLE, &name2); | |
220 | EXEC SQL SELECT status, users_id INTO :before[10], :before[12] | |
221 | FROM users WHERE users_id = :id; | |
222 | EXEC SQL SELECT list_id INTO :before[11] FROM list | |
223 | WHERE name = :name; | |
224 | beforec = 13; | |
225 | } | |
226 | else if (!strcmp(before[1], "LIST")) | |
227 | { | |
228 | id_to_name(id, LIST_TABLE, &name2); | |
229 | EXEC SQL SELECT list_id INTO :before[10] FROM list | |
230 | WHERE name = :name; | |
231 | sprintf(before[11], "%d", id); | |
232 | beforec = 12; | |
233 | } | |
234 | else if (!strcmp(before[1], "STRING") || !strcmp(before[1], "KERBEROS")) | |
235 | { | |
236 | id_to_name(id, STRINGS_TABLE, &name2); | |
237 | EXEC SQL SELECT list_id INTO :before[10] FROM list | |
238 | WHERE name = :name; | |
239 | } | |
240 | else if (!strcmp(before[1], "MACHINE")) | |
241 | { | |
242 | id_to_name(id, MACHINE_TABLE, &name2); | |
243 | EXEC SQL SELECT list_id INTO :before[10] FROM list | |
244 | WHERE name = :name; | |
245 | sprintf(before[11], "%d", id); | |
246 | beforec = 12; | |
247 | } | |
248 | strcpy(before[2], name2); | |
249 | free(name); | |
250 | free(name2); | |
251 | break; | |
252 | default: | |
253 | /* | |
254 | com_err(whoami, 0, "requested incremental on unexpected table `%s'", | |
255 | table_name[table]); | |
256 | */ | |
257 | break; | |
258 | } | |
259 | } | |
260 | ||
261 | ||
262 | void incremental_clear_before(void) | |
263 | { | |
264 | beforec = 0; | |
265 | } | |
266 | ||
267 | ||
268 | /* add an element to the incremental queue for the changed row */ | |
269 | ||
270 | void incremental_after(enum tables table, char *qual, char **argv) | |
271 | { | |
272 | char *name, *name2; | |
273 | EXEC SQL BEGIN DECLARE SECTION; | |
274 | int id; | |
275 | EXEC SQL END DECLARE SECTION; | |
276 | struct iupdate *iu; | |
277 | ||
278 | switch (table) | |
279 | { | |
280 | case USERS_TABLE: | |
281 | sprintf(stmt_buf, "SELECT u.login, u.unix_uid, u.shell, " | |
282 | "u.winconsoleshell, u.last, u.first, u.middle, u.status, " | |
283 | "u.clearid, u.type, u.users_id, u.winhomedir, u.winprofiledir, " | |
284 | "u.potype FROM users u WHERE %s", qual); | |
285 | dosql(after); | |
286 | afterc = 14; | |
287 | break; | |
288 | case MACHINE_TABLE: | |
289 | sprintf(stmt_buf, "SELECT m.name, m.vendor, m.mach_id FROM machine m " | |
290 | "WHERE %s", qual); | |
291 | dosql(after); | |
292 | afterc = 3; | |
293 | break; | |
294 | case CLUSTERS_TABLE: | |
295 | sprintf(stmt_buf, "SELECT c.name, c.description, c.location, " | |
296 | "c.clu_id FROM clusters c WHERE %s", qual); | |
297 | dosql(after); | |
298 | afterc = 4; | |
299 | break; | |
300 | case CONTAINERS_TABLE: | |
301 | sprintf(stmt_buf, "SELECT c.name, c.description, c.location, c.contact, " | |
302 | "c.acl_type, c.acl_id, c.cnt_id, c.list_id FROM containers c " | |
303 | "WHERE %s", qual); | |
304 | dosql(after); | |
305 | afterc = 8; | |
306 | name = xmalloc(0); | |
307 | id = atoi(after[5]); | |
308 | if (!strncmp(after[4], "USER", 4)) | |
309 | { | |
310 | id_to_name(id, USERS_TABLE, &name); | |
311 | strcpy(after[5], name); | |
312 | } | |
313 | else if (!strncmp(after[4], "LIST", 4)) | |
314 | { | |
315 | id_to_name(id, LIST_TABLE, &name); | |
316 | strcpy(after[5], name); | |
317 | } | |
318 | else if (!strncmp(after[4], "KERBEROS", 8)) | |
319 | { | |
320 | id_to_name(id, STRINGS_TABLE, &name); | |
321 | strcpy(after[5], name); | |
322 | } | |
323 | id = atoi(after[7]); | |
324 | id_to_name(id, LIST_TABLE, &name); | |
325 | strcpy(after[7], name); | |
326 | break; | |
327 | case MCMAP_TABLE: | |
328 | strcpy(after[0], argv[0]); | |
329 | strcpy(after[1], argv[1]); | |
330 | afterc = 2; | |
331 | break; | |
332 | case MCNTMAP_TABLE: | |
333 | strcpy(after[0], argv[0]); | |
334 | strcpy(after[1], argv[1]); | |
335 | name_to_id(after[0], MACHINE_TABLE, &id); | |
336 | sprintf(after[2], "%d", id); | |
337 | name_to_id(after[1], CONTAINERS_TABLE, &id); | |
338 | sprintf(after[3], "%d", id); | |
339 | name = xmalloc(0); | |
340 | EXEC SQL SELECT list_id INTO :after[4] FROM containers | |
341 | WHERE cnt_id = :id; | |
342 | id = atoi(after[4]); | |
343 | id_to_name(id, LIST_TABLE, &name); | |
344 | strcpy(after[4], name); | |
345 | afterc = 5; | |
346 | break; | |
347 | case SVC_TABLE: | |
348 | strcpy(after[0], argv[0]); | |
349 | strcpy(after[1], argv[1]); | |
350 | strcpy(after[2], argv[2]); | |
351 | afterc = 3; | |
352 | break; | |
353 | case FILESYS_TABLE: | |
354 | sprintf(stmt_buf, "SELECT fs.label, fs.type, fs.mach_id, fs.name, " | |
355 | "fs.mount, fs.rwaccess, fs.comments, fs.owner, fs.owners, " | |
356 | "fs.createflg, fs.lockertype, fs.filsys_id FROM filesys fs " | |
357 | "WHERE %s", qual); | |
358 | dosql(after); | |
359 | name = xmalloc(0); | |
360 | id = atoi(after[2]); | |
361 | id_to_name(id, MACHINE_TABLE, &name); | |
362 | strcpy(after[2], name); | |
363 | id = atoi(after[7]); | |
364 | id_to_name(id, USERS_TABLE, &name); | |
365 | strcpy(after[7], name); | |
366 | id = atoi(after[8]); | |
367 | id_to_name(id, LIST_TABLE, &name); | |
368 | strcpy(after[8], name); | |
369 | free(name); | |
370 | afterc = 12; | |
371 | break; | |
372 | case QUOTA_TABLE: | |
373 | strcpy(after[0], "?"); | |
374 | strcpy(after[1], argv[1]); | |
375 | strcpy(after[2], "?"); | |
376 | sprintf(stmt_buf, "SELECT q.quota, fs.name FROM quota q, filesys fs " | |
377 | "WHERE %s and fs.filsys_id = q.filsys_id and q.type = '%s'", | |
378 | qual, argv[1]); | |
379 | dosql(&(after[3])); | |
380 | afterc = 5; | |
381 | break; | |
382 | case LIST_TABLE: | |
383 | sprintf(stmt_buf, "SELECT l.name, l.active, l.publicflg, l.hidden, " | |
384 | "l.maillist, l.grouplist, l.gid, l.acl_type, l.acl_id, " | |
385 | "l.description, l.list_id, l.nfsgroup FROM list l WHERE %s", qual); | |
386 | dosql(after); | |
387 | afterc = 12; | |
388 | break; | |
389 | case IMEMBERS_TABLE: | |
390 | id = (int) argv[0]; | |
391 | sprintf(stmt_buf, "SELECT active, publicflg, hidden, maillist, " | |
392 | "grouplist, gid, nfsgroup FROM list WHERE list_id = %d", id); | |
393 | dosql(&(after[3])); | |
394 | name = xmalloc(0); | |
395 | id_to_name(id, LIST_TABLE, &name); | |
396 | name2 = xmalloc(0); | |
397 | strcpy(after[0], name); | |
398 | strcpy(after[1], argv[1]); | |
399 | id = (int) argv[2]; | |
400 | afterc = 11; | |
401 | if (!strcmp(after[1], "USER")) | |
402 | { | |
403 | id_to_name(id, USERS_TABLE, &name2); | |
404 | EXEC SQL SELECT status, users_id INTO :after[10], :after[12] | |
405 | FROM users WHERE users_id = :id; | |
406 | EXEC SQL SELECT list_id INTO :after[11] FROM list | |
407 | WHERE name = :name; | |
408 | afterc = 13; | |
409 | } | |
410 | else if (!strcmp(after[1], "LIST")) | |
411 | { | |
412 | id_to_name(id, LIST_TABLE, &name2); | |
413 | EXEC SQL SELECT list_id INTO :after[10] FROM list | |
414 | WHERE name = :name; | |
415 | sprintf(after[11], "%d", id); | |
416 | afterc = 12; | |
417 | } | |
418 | else if (!strcmp(after[1], "STRING") || !strcmp(after[1], "KERBEROS")) | |
419 | { | |
420 | id_to_name(id, STRINGS_TABLE, &name2); | |
421 | EXEC SQL SELECT list_id INTO :after[10] FROM list | |
422 | WHERE name = :name; | |
423 | } | |
424 | else if (!strcmp(after[1], "MACHINE")) | |
425 | { | |
426 | id_to_name(id, MACHINE_TABLE, &name2); | |
427 | EXEC SQL SELECT list_id INTO :after[10] FROM list | |
428 | WHERE name = :name; | |
429 | sprintf(after[11], "%d", id); | |
430 | afterc = 12; | |
431 | } | |
432 | strcpy(after[2], name2); | |
433 | free(name); | |
434 | free(name2); | |
435 | break; | |
436 | case NO_TABLE: | |
437 | afterc = 0; | |
438 | table = beforetable; | |
439 | break; | |
440 | default: | |
441 | /* | |
442 | com_err(whoami, 0, "requested incremental on unexpected table `%s'", | |
443 | table_name[table]); | |
444 | */ | |
445 | break; | |
446 | } | |
447 | ||
448 | iu = xmalloc(sizeof(struct iupdate)); | |
449 | iu->table = table_name[table]; | |
450 | iu->beforec = beforec; | |
451 | iu->before = copy_argv(before, beforec); | |
452 | iu->afterc = afterc; | |
453 | iu->after = copy_argv(after, afterc); | |
454 | sq_save_data(incremental_sq, iu); | |
455 | } | |
456 | ||
457 | void incremental_clear_after(void) | |
458 | { | |
459 | incremental_after(NO_TABLE, NULL, NULL); | |
460 | } | |
461 | ||
462 | ||
463 | /* Called when the current transaction is committed to start any queued | |
464 | * incremental updates. This caches the update table the first time it | |
465 | * is called. | |
466 | */ | |
467 | ||
468 | struct inc_cache { | |
469 | struct inc_cache *next; | |
470 | char *table, *service; | |
471 | }; | |
472 | ||
473 | ||
474 | void incremental_update(void) | |
475 | { | |
476 | static int inited = 0; | |
477 | static struct inc_cache *cache; | |
478 | struct inc_cache *c; | |
479 | EXEC SQL BEGIN DECLARE SECTION; | |
480 | char tab[INCREMENTAL_TABLE_NAME_SIZE], serv[INCREMENTAL_SERVICE_SIZE]; | |
481 | EXEC SQL END DECLARE SECTION; | |
482 | struct iupdate *iu, *iu_save; | |
483 | ||
484 | if (!inited) | |
485 | { | |
486 | inited++; | |
487 | ||
488 | EXEC SQL DECLARE inc CURSOR FOR SELECT table_name, service | |
489 | FROM incremental; | |
490 | EXEC SQL OPEN inc; | |
491 | while (1) | |
492 | { | |
493 | EXEC SQL FETCH inc INTO :tab, :serv; | |
494 | if (sqlca.sqlcode) | |
495 | break; | |
496 | c = xmalloc(sizeof(struct inc_cache)); | |
497 | c->next = cache; | |
498 | c->table = xstrdup(strtrim(tab)); | |
499 | c->service = xstrdup(strtrim(serv)); | |
500 | cache = c; | |
501 | } | |
502 | EXEC SQL CLOSE inc; | |
503 | EXEC SQL COMMIT WORK; | |
504 | } | |
505 | ||
506 | while (sq_remove_data(incremental_sq, &iu)) | |
507 | { | |
508 | for (c = cache; c; c = c->next) | |
509 | { | |
510 | if (!strcmp(c->table, iu->table)) | |
511 | { | |
512 | iu->service = c->service; | |
513 | iu_save = xmalloc(sizeof(struct iupdate)); | |
514 | iu_save->service = iu->service; | |
515 | iu_save->table = iu->table; | |
516 | iu_save->beforec = iu->beforec; | |
517 | iu_save->afterc = iu->afterc; | |
518 | iu_save->before = copy_argv(iu->before, iu->beforec); | |
519 | iu_save->after = copy_argv(iu->after, iu->afterc); | |
520 | sq_save_data(incremental_exec, iu_save); | |
521 | } | |
522 | } | |
523 | if (!c) | |
524 | { | |
525 | free_argv(iu->before, iu->beforec); | |
526 | free_argv(iu->after, iu->afterc); | |
527 | free(iu); | |
528 | } | |
529 | } | |
530 | if (inc_running == 0) | |
531 | next_incremental(); | |
532 | } | |
533 | ||
534 | /* Pro*C 2.2.4 can't cope with the sigset_t below, at least in Solaris 2.6. | |
535 | We add DEFINE=_PROC_ to the proc invocation and then #ifndef that around | |
536 | this function so proc will pass it through without reading it. */ | |
537 | ||
538 | #ifndef _PROC_ | |
539 | void next_incremental(void) | |
540 | { | |
541 | struct iupdate *iu; | |
542 | char *argv[MAXARGC * 2 + 4], cafter[3], cbefore[3], prog[MAXPATHLEN]; | |
543 | int i; | |
544 | sigset_t sigs; | |
545 | ||
546 | if (!incremental_exec) | |
547 | incremental_init(); | |
548 | ||
549 | if (sq_empty(incremental_exec) || | |
550 | (inc_running && now - inc_started < INC_TIMEOUT)) | |
551 | return; | |
552 | ||
553 | if (inc_running) | |
554 | com_err(whoami, 0, "incremental timeout on pid %d", inc_pid); | |
555 | ||
556 | sq_remove_data(incremental_exec, &iu); | |
557 | argv[1] = iu->table; | |
558 | sprintf(cbefore, "%d", iu->beforec); | |
559 | argv[2] = cbefore; | |
560 | sprintf(cafter, "%d", iu->afterc); | |
561 | argv[3] = cafter; | |
562 | for (i = 0; i < iu->beforec; i++) | |
563 | argv[4 + i] = iu->before[i]; | |
564 | for (i = 0; i < iu->afterc; i++) | |
565 | argv[4 + iu->beforec + i] = iu->after[i]; | |
566 | ||
567 | sprintf(prog, "%s/%s.incr", BIN_DIR, iu->service); | |
568 | argv[0] = prog; | |
569 | argv[4 + iu->beforec + iu->afterc] = 0; | |
570 | ||
571 | sigemptyset(&sigs); | |
572 | sigaddset(&sigs, SIGCHLD); | |
573 | sigprocmask(SIG_BLOCK, &sigs, NULL); | |
574 | inc_pid = vfork(); | |
575 | switch (inc_pid) | |
576 | { | |
577 | case 0: | |
578 | execv(prog, argv); | |
579 | _exit(1); | |
580 | case -1: | |
581 | com_err(whoami, 0, "Failed to start incremental update"); | |
582 | break; | |
583 | default: | |
584 | inc_running = 1; | |
585 | inc_started = now; | |
586 | } | |
587 | sigprocmask(SIG_UNBLOCK, &sigs, NULL); | |
588 | ||
589 | free_argv(iu->before, iu->beforec); | |
590 | free_argv(iu->after, iu->afterc); | |
591 | free(iu); | |
592 | } | |
593 | #endif | |
594 | ||
595 | /* Called when the current transaction is aborted to throw away any queued | |
596 | * incremental updates | |
597 | */ | |
598 | ||
599 | void incremental_flush(void) | |
600 | { | |
601 | struct iupdate *iu; | |
602 | ||
603 | while (sq_get_data(incremental_sq, &iu)) | |
604 | { | |
605 | free_argv(iu->before, iu->beforec); | |
606 | free_argv(iu->after, iu->afterc); | |
607 | free(iu); | |
608 | } | |
609 | sq_destroy(incremental_sq); | |
610 | incremental_sq = sq_create(); | |
611 | } | |
612 | ||
613 | ||
614 | char **copy_argv(char **argv, int argc) | |
615 | { | |
616 | char **ret = xmalloc(sizeof(char *) * argc); | |
617 | while (--argc >= 0) | |
618 | ret[argc] = xstrdup(strtrim(argv[argc])); | |
619 | return ret; | |
620 | } | |
621 | ||
622 | void free_argv(char **argv, int argc) | |
623 | { | |
624 | while (--argc >= 0) | |
625 | free(argv[argc]); | |
626 | free(argv); | |
627 | } | |
628 | ||
629 | int table_num(char *name) | |
630 | { | |
631 | int i; | |
632 | ||
633 | for (i = num_tables - 1; i; i--) | |
634 | { | |
635 | if (!strcmp(table_name[i], name)) | |
636 | break; | |
637 | } | |
638 | ||
639 | return i; /* 0 = "none" if no match */ | |
640 | } |