1 /* $NetBSD: compat.c,v 1.104 2016/02/18 18:29:14 christos Exp $ */
4 * Copyright (c) 1988, 1989, 1990 The Regents of the University of California.
7 * This code is derived from software contributed to Berkeley by
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * Copyright (c) 1988, 1989 by Adam de Boor
37 * Copyright (c) 1989 by Berkeley Softworks
38 * All rights reserved.
40 * This code is derived from software contributed to Berkeley by
43 * Redistribution and use in source and binary forms, with or without
44 * modification, are permitted provided that the following conditions
46 * 1. Redistributions of source code must retain the above copyright
47 * notice, this list of conditions and the following disclaimer.
48 * 2. Redistributions in binary form must reproduce the above copyright
49 * notice, this list of conditions and the following disclaimer in the
50 * documentation and/or other materials provided with the distribution.
51 * 3. All advertising materials mentioning features or use of this software
52 * must display the following acknowledgement:
53 * This product includes software developed by the University of
54 * California, Berkeley and its contributors.
55 * 4. Neither the name of the University nor the names of its contributors
56 * may be used to endorse or promote products derived from this software
57 * without specific prior written permission.
59 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
60 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
61 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
62 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
63 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
64 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
65 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
66 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
67 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
68 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
73 static char rcsid[] = "$NetBSD: compat.c,v 1.104 2016/02/18 18:29:14 christos Exp $";
75 #include <sys/cdefs.h>
78 static char sccsid[] = "@(#)compat.c 8.2 (Berkeley) 3/19/94";
80 __RCSID("$NetBSD: compat.c,v 1.104 2016/02/18 18:29:14 christos Exp $");
87 * The routines in this file implement the full-compatibility
88 * mode of PMake. Most of the special functionality of PMake
89 * is available in this mode. Things not supported:
91 * - friendly variable substitution.
94 * Compat_Run Initialize things for this module and recreate
95 * thems as need creatin'
101 #include <sys/types.h>
102 #include <sys/stat.h>
114 #include "metachar.h"
115 #include "pathnames.h"
118 static GNode *curTarg = NULL;
119 static GNode *ENDNode;
120 static void CompatInterrupt(int);
123 *-----------------------------------------------------------------------
125 * Interrupt the creation of the current target and remove it if
132 * The target is removed and the process exits. If .INTERRUPT exists,
133 * its commands are run first WITH INTERRUPTS IGNORED..
135 *-----------------------------------------------------------------------
138 CompatInterrupt(int signo)
142 if ((curTarg != NULL) && !Targ_Precious (curTarg)) {
144 char *file = Var_Value(TARGET, curTarg, &p1);
146 if (!noExecute && eunlink(file) != -1) {
147 Error("*** %s removed", file);
153 * Run .INTERRUPT only if hit with interrupt signal
155 if (signo == SIGINT) {
156 gn = Targ_FindNode(".INTERRUPT", TARG_NOCREATE);
163 if (signo == SIGQUIT)
165 bmake_signal(signo, SIG_DFL);
170 *-----------------------------------------------------------------------
171 * CompatRunCommand --
172 * Execute the next command for a target. If the command returns an
173 * error, the node's made field is set to ERROR and creation stops.
176 * cmdp Command to execute
177 * gnp Node from which the command came
180 * 0 if the command succeeded, 1 if an error occurred.
183 * The node's 'made' field may be set to ERROR.
185 *-----------------------------------------------------------------------
188 CompatRunCommand(void *cmdp, void *gnp)
190 char *cmdStart; /* Start of expanded command */
192 Boolean silent, /* Don't print command */
193 doIt; /* Execute even if -n */
194 volatile Boolean errCheck; /* Check errors */
195 WAIT_T reason; /* Reason for child's death */
196 int status; /* Description of child's death */
197 pid_t cpid; /* Child actually found */
198 pid_t retstat; /* Result of wait */
199 LstNode cmdNode; /* Node where current command is located */
200 const char ** volatile av; /* Argument vector for thing to exec */
201 char ** volatile mav;/* Copy of the argument vector for freeing */
202 int argc; /* Number of arguments in av or 0 if not
203 * dynamically allocated */
204 Boolean local; /* TRUE if command should be executed
206 Boolean useShell; /* TRUE if command should be executed
208 char * volatile cmd = (char *)cmdp;
209 GNode *gn = (GNode *)gnp;
211 silent = gn->type & OP_SILENT;
212 errCheck = !(gn->type & OP_IGNORE);
215 cmdNode = Lst_Member(gn->commands, cmd);
216 cmdStart = Var_Subst(NULL, cmd, gn, VARF_WANTRES);
219 * brk_string will return an argv with a NULL in av[0], thus causing
220 * execvp to choke and die horribly. Besides, how can we execute a null
221 * command? In any case, we warn the user that the command expanded to
222 * nothing (is this the right thing to do?).
225 if (*cmdStart == '\0') {
230 Lst_Replace(cmdNode, cmdStart);
232 if ((gn->type & OP_SAVE_CMDS) && (gn != ENDNode)) {
233 (void)Lst_AtEnd(ENDNode->commands, cmdStart);
236 if (strcmp(cmdStart, "...") == 0) {
237 gn->type |= OP_SAVE_CMDS;
241 while ((*cmd == '@') || (*cmd == '-') || (*cmd == '+')) {
244 silent = DEBUG(LOUD) ? FALSE : TRUE;
251 if (!shellName) /* we came here from jobs */
258 while (isspace((unsigned char)*cmd))
262 * If we did not end up with a command, just skip it.
267 #if !defined(MAKE_NATIVE)
269 * In a non-native build, the host environment might be weird enough
270 * that it's necessary to go through a shell to get the correct
271 * behaviour. Or perhaps the shell has been replaced with something
272 * that does extra logging, and that should not be bypassed.
277 * Search for meta characters in the command. If there are no meta
278 * characters, there's no need to execute a shell to execute the
281 * Additionally variable assignments and empty commands
282 * go to the shell. Therefore treat '=' and ':' like shell
283 * meta characters as documented in make(1).
286 useShell = needshell(cmd, FALSE);
290 * Print the command before echoing if we're not supposed to be quiet for
291 * this one. We also print the command if -n given.
293 if (!silent || NoExecute(gn)) {
299 * If we're not supposed to execute any commands, this is as far as
302 if (!doIt && NoExecute(gn)) {
306 fprintf(debug_file, "Execute: '%s'\n", cmd);
311 * We need to pass the command off to the shell, typically
312 * because the command contains a "meta" character.
314 static const char *shargv[5];
318 shargv[shargc++] = shellPath;
320 * The following work for any of the builtin shell specs.
322 if (errCheck && shellErrFlag) {
323 shargv[shargc++] = shellErrFlag;
326 shargv[shargc++] = "-xc";
328 shargv[shargc++] = "-c";
329 shargv[shargc++] = cmd;
330 shargv[shargc++] = NULL;
337 * No meta-characters, so no need to exec a shell. Break the command
338 * into words to form an argument vector we can execute.
340 mav = brk_string(cmd, &argc, TRUE, &bp);
357 * Fork and execute the single command. If the fork fails, we abort.
361 Fatal("Could not fork");
371 (void)execvp(av[0], (char *const *)UNCONST(av));
373 (void)execv(av[0], (char *const *)UNCONST(av));
374 execError("exec", av[0]);
381 Lst_Replace(cmdNode, NULL);
385 meta_compat_parent();
390 * The child is off and running. Now all we can do is wait...
394 while ((retstat = wait(&reason)) != cpid) {
396 JobReapChild(retstat, reason, FALSE); /* not ours? */
397 if (retstat == -1 && errno != EINTR) {
403 if (WIFSTOPPED(reason)) {
404 status = WSTOPSIG(reason); /* stopped */
405 } else if (WIFEXITED(reason)) {
406 status = WEXITSTATUS(reason); /* exited */
407 #if defined(USE_META) && defined(USE_FILEMON_ONCE)
409 meta_cmd_finish(NULL);
414 fprintf(debug_file, "\n*** Failed target: %s\n*** Failed command: ",
416 for (cp = cmd; *cp; ) {
417 if (isspace((unsigned char)*cp)) {
418 fprintf(debug_file, " ");
419 while (isspace((unsigned char)*cp))
422 fprintf(debug_file, "%c", *cp);
426 fprintf(debug_file, "\n");
428 printf("*** Error code %d", status);
431 status = WTERMSIG(reason); /* signaled */
432 printf("*** Signal %d", status);
436 if (!WIFEXITED(reason) || (status != 0)) {
440 meta_job_error(NULL, gn, 0, status);
446 * Abort the current target, but let others
449 printf(" (continuing)\n");
453 * Continue executing commands for this target.
454 * If we return 0, this will happen...
456 printf(" (ignored)\n");
462 Fatal("error in wait: %d: %s", retstat, strerror(errno));
472 *-----------------------------------------------------------------------
477 * gnp The node to make
478 * pgnp Parent to abort if necessary
484 * If an error is detected and not being ignored, the process exits.
486 *-----------------------------------------------------------------------
489 Compat_Make(void *gnp, void *pgnp)
491 GNode *gn = (GNode *)gnp;
492 GNode *pgn = (GNode *)pgnp;
494 if (!shellName) /* we came here from jobs */
496 if (gn->made == UNMADE && (gn == pgn || (pgn->type & OP_MADE) == 0)) {
498 * First mark ourselves to be made, then apply whatever transformations
499 * the suffix module thinks are necessary. Once that's done, we can
500 * descend and make all our children. If any of them has an error
501 * but the -k flag was given, our 'make' field will be set FALSE again.
502 * This is our signal to not attempt to do anything but abort our
506 gn->made = BEINGMADE;
507 if ((gn->type & OP_MADE) == 0)
509 Lst_ForEach(gn->children, Compat_Make, gn);
510 if ((gn->flags & REMAKE) == 0) {
512 pgn->flags &= ~REMAKE;
516 if (Lst_Member(gn->iParents, pgn) != NULL) {
518 Var_Set(IMPSRC, Var_Value(TARGET, gn, &p1), pgn, 0);
523 * All the children were made ok. Now cmgn->mtime contains the
524 * modification time of the newest child, we need to find out if we
525 * exist and when we were modified last. The criteria for datedness
526 * are defined by the Make_OODate function.
529 fprintf(debug_file, "Examining %s...", gn->name);
531 if (! Make_OODate(gn)) {
534 fprintf(debug_file, "up-to-date.\n");
537 } else if (DEBUG(MAKE)) {
538 fprintf(debug_file, "out-of-date.\n");
542 * If the user is just seeing if something is out-of-date, exit now
543 * to tell him/her "yes".
550 * We need to be re-made. We also have to make sure we've got a $?
551 * variable. To be nice, we also define the $> variable using
557 * Alter our type to tell if errors should be ignored or things
558 * should not be printed so CompatRunCommand knows what to do.
560 if (Targ_Ignore(gn)) {
561 gn->type |= OP_IGNORE;
563 if (Targ_Silent(gn)) {
564 gn->type |= OP_SILENT;
567 if (Job_CheckCommands(gn, Fatal)) {
569 * Our commands are ok, but we still have to worry about the -t
572 if (!touchFlag || (gn->type & OP_MAKE)) {
575 if (useMeta && !NoExecute(gn)) {
576 meta_job_start(NULL, gn);
579 Lst_ForEach(gn->commands, CompatRunCommand, gn);
582 Job_Touch(gn, gn->type & OP_SILENT);
588 if (useMeta && !NoExecute(gn)) {
589 meta_job_finish(NULL);
593 if (gn->made != ERROR) {
595 * If the node was made successfully, mark it so, update
596 * its modification time and timestamp all its parents. Note
597 * that for .ZEROTIME targets, the timestamping isn't done.
598 * This is to keep its state from affecting that of its parent.
601 pgn->flags |= Make_Recheck(gn) == 0 ? FORCE : 0;
602 if (!(gn->type & OP_EXEC)) {
603 pgn->flags |= CHILDMADE;
604 Make_TimeStamp(pgn, gn);
606 } else if (keepgoing) {
607 pgn->flags &= ~REMAKE;
609 PrintOnError(gn, "\n\nStop.");
612 } else if (gn->made == ERROR) {
614 * Already had an error when making this beastie. Tell the parent
617 pgn->flags &= ~REMAKE;
619 if (Lst_Member(gn->iParents, pgn) != NULL) {
621 Var_Set(IMPSRC, Var_Value(TARGET, gn, &p1), pgn, 0);
626 Error("Graph cycles through %s", gn->name);
628 pgn->flags &= ~REMAKE;
631 if ((gn->type & OP_EXEC) == 0) {
632 pgn->flags |= CHILDMADE;
633 Make_TimeStamp(pgn, gn);
637 if ((gn->type & OP_EXEC) == 0) {
638 Make_TimeStamp(pgn, gn);
647 Lst_ForEach(gn->cohorts, Compat_Make, pgnp);
652 *-----------------------------------------------------------------------
654 * Initialize this mode and start making.
657 * targs List of target nodes to re-create
665 *-----------------------------------------------------------------------
668 Compat_Run(Lst targs)
670 GNode *gn = NULL;/* Current root target */
671 int errors; /* Number of targets not remade due to errors */
676 if (bmake_signal(SIGINT, SIG_IGN) != SIG_IGN) {
677 bmake_signal(SIGINT, CompatInterrupt);
679 if (bmake_signal(SIGTERM, SIG_IGN) != SIG_IGN) {
680 bmake_signal(SIGTERM, CompatInterrupt);
682 if (bmake_signal(SIGHUP, SIG_IGN) != SIG_IGN) {
683 bmake_signal(SIGHUP, CompatInterrupt);
685 if (bmake_signal(SIGQUIT, SIG_IGN) != SIG_IGN) {
686 bmake_signal(SIGQUIT, CompatInterrupt);
689 ENDNode = Targ_FindNode(".END", TARG_CREATE);
690 ENDNode->type = OP_SPECIAL;
692 * If the user has defined a .BEGIN target, execute the commands attached
696 gn = Targ_FindNode(".BEGIN", TARG_NOCREATE);
699 if (gn->made == ERROR) {
700 PrintOnError(gn, "\n\nStop.");
707 * Expand .USE nodes right now, because they can modify the structure
710 Make_ExpandUse(targs);
713 * For each entry in the list of targets to create, call Compat_Make on
714 * it to create the thing. Compat_Make will leave the 'made' field of gn
715 * in one of several states:
716 * UPTODATE gn was already up-to-date
717 * MADE gn was recreated successfully
718 * ERROR An error occurred while gn was being created
719 * ABORTED gn was not remade because one of its inferiors
720 * could not be made due to errors.
723 while (!Lst_IsEmpty (targs)) {
724 gn = (GNode *)Lst_DeQueue(targs);
727 if (gn->made == UPTODATE) {
728 printf("`%s' is up to date.\n", gn->name);
729 } else if (gn->made == ABORTED) {
730 printf("`%s' not remade because of errors.\n", gn->name);
736 * If the user has defined a .END target, run its commands.
739 Compat_Make(ENDNode, ENDNode);
740 if (gn->made == ERROR) {
741 PrintOnError(gn, "\n\nStop.");