xref: /freebsd/contrib/bmake/meta.c (revision b778b302be1c8857109d4f88287cc35ff50a9086)
1*b778b302SSimon J. Gerraty /*      $NetBSD: meta.c,v 1.60 2016/06/04 22:17:14 sjg Exp $ */
23955d011SMarcel Moolenaar 
33955d011SMarcel Moolenaar /*
43955d011SMarcel Moolenaar  * Implement 'meta' mode.
53955d011SMarcel Moolenaar  * Adapted from John Birrell's patches to FreeBSD make.
63955d011SMarcel Moolenaar  * --sjg
73955d011SMarcel Moolenaar  */
83955d011SMarcel Moolenaar /*
9be19d90bSSimon J. Gerraty  * Copyright (c) 2009-2016, Juniper Networks, Inc.
103955d011SMarcel Moolenaar  * Portions Copyright (c) 2009, John Birrell.
113955d011SMarcel Moolenaar  *
123955d011SMarcel Moolenaar  * Redistribution and use in source and binary forms, with or without
133955d011SMarcel Moolenaar  * modification, are permitted provided that the following conditions
143955d011SMarcel Moolenaar  * are met:
153955d011SMarcel Moolenaar  * 1. Redistributions of source code must retain the above copyright
163955d011SMarcel Moolenaar  *    notice, this list of conditions and the following disclaimer.
173955d011SMarcel Moolenaar  * 2. Redistributions in binary form must reproduce the above copyright
183955d011SMarcel Moolenaar  *    notice, this list of conditions and the following disclaimer in the
193955d011SMarcel Moolenaar  *    documentation and/or other materials provided with the distribution.
203955d011SMarcel Moolenaar  *
213955d011SMarcel Moolenaar  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
223955d011SMarcel Moolenaar  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
233955d011SMarcel Moolenaar  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
243955d011SMarcel Moolenaar  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
253955d011SMarcel Moolenaar  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
263955d011SMarcel Moolenaar  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
273955d011SMarcel Moolenaar  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
283955d011SMarcel Moolenaar  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
293955d011SMarcel Moolenaar  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
303955d011SMarcel Moolenaar  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
313955d011SMarcel Moolenaar  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
323955d011SMarcel Moolenaar  */
333955d011SMarcel Moolenaar #if defined(USE_META)
343955d011SMarcel Moolenaar 
353955d011SMarcel Moolenaar #ifdef HAVE_CONFIG_H
363955d011SMarcel Moolenaar # include "config.h"
373955d011SMarcel Moolenaar #endif
383955d011SMarcel Moolenaar #include <sys/stat.h>
393955d011SMarcel Moolenaar #include <sys/ioctl.h>
40ac3446e9SSimon J. Gerraty #ifdef HAVE_LIBGEN_H
413955d011SMarcel Moolenaar #include <libgen.h>
42ac3446e9SSimon J. Gerraty #elif !defined(HAVE_DIRNAME)
43ac3446e9SSimon J. Gerraty char * dirname(char *);
44ac3446e9SSimon J. Gerraty #endif
453955d011SMarcel Moolenaar #include <errno.h>
463955d011SMarcel Moolenaar #if !defined(HAVE_CONFIG_H) || defined(HAVE_ERR_H)
473955d011SMarcel Moolenaar #include <err.h>
483955d011SMarcel Moolenaar #endif
493955d011SMarcel Moolenaar 
503955d011SMarcel Moolenaar #include "make.h"
513955d011SMarcel Moolenaar #include "job.h"
523955d011SMarcel Moolenaar 
533955d011SMarcel Moolenaar #ifdef HAVE_FILEMON_H
543955d011SMarcel Moolenaar # include <filemon.h>
553955d011SMarcel Moolenaar #endif
563955d011SMarcel Moolenaar #if !defined(USE_FILEMON) && defined(FILEMON_SET_FD)
573955d011SMarcel Moolenaar # define USE_FILEMON
583955d011SMarcel Moolenaar #endif
593955d011SMarcel Moolenaar 
603955d011SMarcel Moolenaar static BuildMon Mybm;			/* for compat */
613955d011SMarcel Moolenaar static Lst metaBailiwick;		/* our scope of control */
62be19d90bSSimon J. Gerraty static char *metaBailiwickStr;		/* string storage for the list */
6351ee2c1cSSimon J. Gerraty static Lst metaIgnorePaths;		/* paths we deliberately ignore */
64be19d90bSSimon J. Gerraty static char *metaIgnorePathsStr;	/* string storage for the list */
6551ee2c1cSSimon J. Gerraty 
6651ee2c1cSSimon J. Gerraty #ifndef MAKE_META_IGNORE_PATHS
6751ee2c1cSSimon J. Gerraty #define MAKE_META_IGNORE_PATHS ".MAKE.META.IGNORE_PATHS"
6851ee2c1cSSimon J. Gerraty #endif
69e48f47ddSSimon J. Gerraty #ifndef MAKE_META_IGNORE_PATTERNS
70e48f47ddSSimon J. Gerraty #define MAKE_META_IGNORE_PATTERNS ".MAKE.META.IGNORE_PATTERNS"
71e48f47ddSSimon J. Gerraty #endif
723955d011SMarcel Moolenaar 
733955d011SMarcel Moolenaar Boolean useMeta = FALSE;
743955d011SMarcel Moolenaar static Boolean useFilemon = FALSE;
753955d011SMarcel Moolenaar static Boolean writeMeta = FALSE;
76*b778b302SSimon J. Gerraty static Boolean metaMissing = FALSE;	/* oodate if missing */
77*b778b302SSimon J. Gerraty static Boolean filemonMissing = FALSE;	/* oodate if missing */
783955d011SMarcel Moolenaar static Boolean metaEnv = FALSE;		/* don't save env unless asked */
793955d011SMarcel Moolenaar static Boolean metaVerbose = FALSE;
803955d011SMarcel Moolenaar static Boolean metaIgnoreCMDs = FALSE;	/* ignore CMDs in .meta files */
81e48f47ddSSimon J. Gerraty static Boolean metaIgnorePatterns = FALSE; /* do we need to do pattern matches */
823955d011SMarcel Moolenaar static Boolean metaCurdirOk = FALSE;	/* write .meta in .CURDIR Ok? */
833955d011SMarcel Moolenaar static Boolean metaSilent = FALSE;	/* if we have a .meta be SILENT */
843955d011SMarcel Moolenaar 
853955d011SMarcel Moolenaar extern Boolean forceJobs;
863955d011SMarcel Moolenaar extern Boolean comatMake;
873955d011SMarcel Moolenaar extern char    **environ;
883955d011SMarcel Moolenaar 
893955d011SMarcel Moolenaar #define	MAKE_META_PREFIX	".MAKE.META.PREFIX"
903955d011SMarcel Moolenaar 
913955d011SMarcel Moolenaar #ifndef N2U
923955d011SMarcel Moolenaar # define N2U(n, u)   (((n) + ((u) - 1)) / (u))
933955d011SMarcel Moolenaar #endif
943955d011SMarcel Moolenaar #ifndef ROUNDUP
953955d011SMarcel Moolenaar # define ROUNDUP(n, u)   (N2U((n), (u)) * (u))
963955d011SMarcel Moolenaar #endif
973955d011SMarcel Moolenaar 
983955d011SMarcel Moolenaar #if !defined(HAVE_STRSEP)
993955d011SMarcel Moolenaar # define strsep(s, d) stresep((s), (d), 0)
1003955d011SMarcel Moolenaar #endif
1013955d011SMarcel Moolenaar 
1023955d011SMarcel Moolenaar /*
1033955d011SMarcel Moolenaar  * Filemon is a kernel module which snoops certain syscalls.
1043955d011SMarcel Moolenaar  *
1053955d011SMarcel Moolenaar  * C chdir
1063955d011SMarcel Moolenaar  * E exec
1073955d011SMarcel Moolenaar  * F [v]fork
1083955d011SMarcel Moolenaar  * L [sym]link
1093955d011SMarcel Moolenaar  * M rename
1103955d011SMarcel Moolenaar  * R read
1113955d011SMarcel Moolenaar  * W write
1123955d011SMarcel Moolenaar  * S stat
1133955d011SMarcel Moolenaar  *
1143955d011SMarcel Moolenaar  * See meta_oodate below - we mainly care about 'E' and 'R'.
1153955d011SMarcel Moolenaar  *
1163955d011SMarcel Moolenaar  * We can still use meta mode without filemon, but
1173955d011SMarcel Moolenaar  * the benefits are more limited.
1183955d011SMarcel Moolenaar  */
1193955d011SMarcel Moolenaar #ifdef USE_FILEMON
1203955d011SMarcel Moolenaar # ifndef _PATH_FILEMON
1213955d011SMarcel Moolenaar #   define _PATH_FILEMON "/dev/filemon"
1223955d011SMarcel Moolenaar # endif
1233955d011SMarcel Moolenaar 
1243955d011SMarcel Moolenaar /*
1253955d011SMarcel Moolenaar  * Open the filemon device.
1263955d011SMarcel Moolenaar  */
1273955d011SMarcel Moolenaar static void
1283955d011SMarcel Moolenaar filemon_open(BuildMon *pbm)
1293955d011SMarcel Moolenaar {
1303955d011SMarcel Moolenaar     int retry;
1313955d011SMarcel Moolenaar 
1323955d011SMarcel Moolenaar     pbm->mon_fd = pbm->filemon_fd = -1;
1333955d011SMarcel Moolenaar     if (!useFilemon)
1343955d011SMarcel Moolenaar 	return;
1353955d011SMarcel Moolenaar 
1363955d011SMarcel Moolenaar     for (retry = 5; retry >= 0; retry--) {
1373955d011SMarcel Moolenaar 	if ((pbm->filemon_fd = open(_PATH_FILEMON, O_RDWR)) >= 0)
1383955d011SMarcel Moolenaar 	    break;
1393955d011SMarcel Moolenaar     }
1403955d011SMarcel Moolenaar 
1413955d011SMarcel Moolenaar     if (pbm->filemon_fd < 0) {
1423955d011SMarcel Moolenaar 	useFilemon = FALSE;
1433955d011SMarcel Moolenaar 	warn("Could not open %s", _PATH_FILEMON);
1443955d011SMarcel Moolenaar 	return;
1453955d011SMarcel Moolenaar     }
1463955d011SMarcel Moolenaar 
1473955d011SMarcel Moolenaar     /*
1483955d011SMarcel Moolenaar      * We use a file outside of '.'
1493955d011SMarcel Moolenaar      * to avoid a FreeBSD kernel bug where unlink invalidates
1503955d011SMarcel Moolenaar      * cwd causing getcwd to do a lot more work.
1513955d011SMarcel Moolenaar      * We only care about the descriptor.
1523955d011SMarcel Moolenaar      */
1533955d011SMarcel Moolenaar     pbm->mon_fd = mkTempFile("filemon.XXXXXX", NULL);
1543955d011SMarcel Moolenaar     if (ioctl(pbm->filemon_fd, FILEMON_SET_FD, &pbm->mon_fd) < 0) {
1553955d011SMarcel Moolenaar 	err(1, "Could not set filemon file descriptor!");
1563955d011SMarcel Moolenaar     }
1573955d011SMarcel Moolenaar     /* we don't need these once we exec */
158be19d90bSSimon J. Gerraty     (void)fcntl(pbm->mon_fd, F_SETFD, FD_CLOEXEC);
159be19d90bSSimon J. Gerraty     (void)fcntl(pbm->filemon_fd, F_SETFD, FD_CLOEXEC);
1603955d011SMarcel Moolenaar }
1613955d011SMarcel Moolenaar 
1623955d011SMarcel Moolenaar /*
1633955d011SMarcel Moolenaar  * Read the build monitor output file and write records to the target's
1643955d011SMarcel Moolenaar  * metadata file.
1653955d011SMarcel Moolenaar  */
166e48f47ddSSimon J. Gerraty static int
1673955d011SMarcel Moolenaar filemon_read(FILE *mfp, int fd)
1683955d011SMarcel Moolenaar {
1693955d011SMarcel Moolenaar     char buf[BUFSIZ];
170db29cad8SSimon J. Gerraty     int n;
171e48f47ddSSimon J. Gerraty     int error;
1723955d011SMarcel Moolenaar 
1733955d011SMarcel Moolenaar     /* Check if we're not writing to a meta data file.*/
1743955d011SMarcel Moolenaar     if (mfp == NULL) {
1753955d011SMarcel Moolenaar 	if (fd >= 0)
1763955d011SMarcel Moolenaar 	    close(fd);			/* not interested */
177e48f47ddSSimon J. Gerraty 	return 0;
1783955d011SMarcel Moolenaar     }
1793955d011SMarcel Moolenaar     /* rewind */
1803955d011SMarcel Moolenaar     (void)lseek(fd, (off_t)0, SEEK_SET);
1813955d011SMarcel Moolenaar 
182e48f47ddSSimon J. Gerraty     error = 0;
183bedf67aeSSimon J. Gerraty     fprintf(mfp, "\n-- filemon acquired metadata --\n");
1843955d011SMarcel Moolenaar 
185db29cad8SSimon J. Gerraty     while ((n = read(fd, buf, sizeof(buf))) > 0) {
186e48f47ddSSimon J. Gerraty 	if ((int)fwrite(buf, 1, n, mfp) < n)
187e48f47ddSSimon J. Gerraty 	    error = EIO;
1883955d011SMarcel Moolenaar     }
1893955d011SMarcel Moolenaar     fflush(mfp);
190e48f47ddSSimon J. Gerraty     if (close(fd) < 0)
191e48f47ddSSimon J. Gerraty 	error = errno;
192e48f47ddSSimon J. Gerraty     return error;
1933955d011SMarcel Moolenaar }
1943955d011SMarcel Moolenaar #endif
1953955d011SMarcel Moolenaar 
1963955d011SMarcel Moolenaar /*
1973955d011SMarcel Moolenaar  * when realpath() fails,
1983955d011SMarcel Moolenaar  * we use this, to clean up ./ and ../
1993955d011SMarcel Moolenaar  */
2003955d011SMarcel Moolenaar static void
2013955d011SMarcel Moolenaar eat_dots(char *buf, size_t bufsz, int dots)
2023955d011SMarcel Moolenaar {
2033955d011SMarcel Moolenaar     char *cp;
2043955d011SMarcel Moolenaar     char *cp2;
2053955d011SMarcel Moolenaar     const char *eat;
2063955d011SMarcel Moolenaar     size_t eatlen;
2073955d011SMarcel Moolenaar 
2083955d011SMarcel Moolenaar     switch (dots) {
2093955d011SMarcel Moolenaar     case 1:
2103955d011SMarcel Moolenaar 	eat = "/./";
2113955d011SMarcel Moolenaar 	eatlen = 2;
2123955d011SMarcel Moolenaar 	break;
2133955d011SMarcel Moolenaar     case 2:
2143955d011SMarcel Moolenaar 	eat = "/../";
2153955d011SMarcel Moolenaar 	eatlen = 3;
2163955d011SMarcel Moolenaar 	break;
2173955d011SMarcel Moolenaar     default:
2183955d011SMarcel Moolenaar 	return;
2193955d011SMarcel Moolenaar     }
2203955d011SMarcel Moolenaar 
2213955d011SMarcel Moolenaar     do {
2223955d011SMarcel Moolenaar 	cp = strstr(buf, eat);
2233955d011SMarcel Moolenaar 	if (cp) {
2243955d011SMarcel Moolenaar 	    cp2 = cp + eatlen;
2253955d011SMarcel Moolenaar 	    if (dots == 2 && cp > buf) {
2263955d011SMarcel Moolenaar 		do {
2273955d011SMarcel Moolenaar 		    cp--;
2283955d011SMarcel Moolenaar 		} while (cp > buf && *cp != '/');
2293955d011SMarcel Moolenaar 	    }
2303955d011SMarcel Moolenaar 	    if (*cp == '/') {
2313955d011SMarcel Moolenaar 		strlcpy(cp, cp2, bufsz - (cp - buf));
2323955d011SMarcel Moolenaar 	    } else {
2333955d011SMarcel Moolenaar 		return;			/* can't happen? */
2343955d011SMarcel Moolenaar 	    }
2353955d011SMarcel Moolenaar 	}
2363955d011SMarcel Moolenaar     } while (cp);
2373955d011SMarcel Moolenaar }
2383955d011SMarcel Moolenaar 
2393955d011SMarcel Moolenaar static char *
2403955d011SMarcel Moolenaar meta_name(struct GNode *gn, char *mname, size_t mnamelen,
2413955d011SMarcel Moolenaar 	  const char *dname,
242*b778b302SSimon J. Gerraty 	  const char *tname,
243*b778b302SSimon J. Gerraty 	  const char *cwd)
2443955d011SMarcel Moolenaar {
2453955d011SMarcel Moolenaar     char buf[MAXPATHLEN];
2463955d011SMarcel Moolenaar     char *rp;
2473955d011SMarcel Moolenaar     char *cp;
2483955d011SMarcel Moolenaar     char *tp;
2493955d011SMarcel Moolenaar 
2503955d011SMarcel Moolenaar     /*
2513955d011SMarcel Moolenaar      * Weed out relative paths from the target file name.
2523955d011SMarcel Moolenaar      * We have to be careful though since if target is a
2533955d011SMarcel Moolenaar      * symlink, the result will be unstable.
2543955d011SMarcel Moolenaar      * So we use realpath() just to get the dirname, and leave the
2553955d011SMarcel Moolenaar      * basename as given to us.
2563955d011SMarcel Moolenaar      */
2573955d011SMarcel Moolenaar     if ((cp = strrchr(tname, '/'))) {
258*b778b302SSimon J. Gerraty 	if (cached_realpath(tname, buf)) {
2593955d011SMarcel Moolenaar 	    if ((rp = strrchr(buf, '/'))) {
2603955d011SMarcel Moolenaar 		rp++;
2613955d011SMarcel Moolenaar 		cp++;
2623955d011SMarcel Moolenaar 		if (strcmp(cp, rp) != 0)
2633955d011SMarcel Moolenaar 		    strlcpy(rp, cp, sizeof(buf) - (rp - buf));
2643955d011SMarcel Moolenaar 	    }
2653955d011SMarcel Moolenaar 	    tname = buf;
2663955d011SMarcel Moolenaar 	} else {
2673955d011SMarcel Moolenaar 	    /*
2683955d011SMarcel Moolenaar 	     * We likely have a directory which is about to be made.
2693955d011SMarcel Moolenaar 	     * We pretend realpath() succeeded, to have a chance
2703955d011SMarcel Moolenaar 	     * of generating the same meta file name that we will
2713955d011SMarcel Moolenaar 	     * next time through.
2723955d011SMarcel Moolenaar 	     */
2733955d011SMarcel Moolenaar 	    if (tname[0] == '/') {
2743955d011SMarcel Moolenaar 		strlcpy(buf, tname, sizeof(buf));
2753955d011SMarcel Moolenaar 	    } else {
2763955d011SMarcel Moolenaar 		snprintf(buf, sizeof(buf), "%s/%s", cwd, tname);
2773955d011SMarcel Moolenaar 	    }
2783955d011SMarcel Moolenaar 	    eat_dots(buf, sizeof(buf), 1);	/* ./ */
2793955d011SMarcel Moolenaar 	    eat_dots(buf, sizeof(buf), 2);	/* ../ */
2803955d011SMarcel Moolenaar 	    tname = buf;
2813955d011SMarcel Moolenaar 	}
2823955d011SMarcel Moolenaar     }
2833955d011SMarcel Moolenaar     /* on some systems dirname may modify its arg */
2843955d011SMarcel Moolenaar     tp = bmake_strdup(tname);
2853955d011SMarcel Moolenaar     if (strcmp(dname, dirname(tp)) == 0)
2863955d011SMarcel Moolenaar 	snprintf(mname, mnamelen, "%s.meta", tname);
2873955d011SMarcel Moolenaar     else {
2883955d011SMarcel Moolenaar 	snprintf(mname, mnamelen, "%s/%s.meta", dname, tname);
2893955d011SMarcel Moolenaar 
2903955d011SMarcel Moolenaar 	/*
2913955d011SMarcel Moolenaar 	 * Replace path separators in the file name after the
2923955d011SMarcel Moolenaar 	 * current object directory path.
2933955d011SMarcel Moolenaar 	 */
2943955d011SMarcel Moolenaar 	cp = mname + strlen(dname) + 1;
2953955d011SMarcel Moolenaar 
2963955d011SMarcel Moolenaar 	while (*cp != '\0') {
2973955d011SMarcel Moolenaar 	    if (*cp == '/')
2983955d011SMarcel Moolenaar 		*cp = '_';
2993955d011SMarcel Moolenaar 	    cp++;
3003955d011SMarcel Moolenaar 	}
3013955d011SMarcel Moolenaar     }
3023955d011SMarcel Moolenaar     free(tp);
3033955d011SMarcel Moolenaar     return (mname);
3043955d011SMarcel Moolenaar }
3053955d011SMarcel Moolenaar 
3063955d011SMarcel Moolenaar /*
3073955d011SMarcel Moolenaar  * Return true if running ${.MAKE}
3083955d011SMarcel Moolenaar  * Bypassed if target is flagged .MAKE
3093955d011SMarcel Moolenaar  */
3103955d011SMarcel Moolenaar static int
3113955d011SMarcel Moolenaar is_submake(void *cmdp, void *gnp)
3123955d011SMarcel Moolenaar {
3133955d011SMarcel Moolenaar     static char *p_make = NULL;
3143955d011SMarcel Moolenaar     static int p_len;
3153955d011SMarcel Moolenaar     char  *cmd = cmdp;
3163955d011SMarcel Moolenaar     GNode *gn = gnp;
3173955d011SMarcel Moolenaar     char *mp = NULL;
3183955d011SMarcel Moolenaar     char *cp;
3193955d011SMarcel Moolenaar     char *cp2;
3203955d011SMarcel Moolenaar     int rc = 0;				/* keep looking */
3213955d011SMarcel Moolenaar 
3223955d011SMarcel Moolenaar     if (!p_make) {
3233955d011SMarcel Moolenaar 	p_make = Var_Value(".MAKE", gn, &cp);
3243955d011SMarcel Moolenaar 	p_len = strlen(p_make);
3253955d011SMarcel Moolenaar     }
3263955d011SMarcel Moolenaar     cp = strchr(cmd, '$');
3273955d011SMarcel Moolenaar     if ((cp)) {
328be19d90bSSimon J. Gerraty 	mp = Var_Subst(NULL, cmd, gn, VARF_WANTRES);
3293955d011SMarcel Moolenaar 	cmd = mp;
3303955d011SMarcel Moolenaar     }
3313955d011SMarcel Moolenaar     cp2 = strstr(cmd, p_make);
3323955d011SMarcel Moolenaar     if ((cp2)) {
3333955d011SMarcel Moolenaar 	switch (cp2[p_len]) {
3343955d011SMarcel Moolenaar 	case '\0':
3353955d011SMarcel Moolenaar 	case ' ':
3363955d011SMarcel Moolenaar 	case '\t':
3373955d011SMarcel Moolenaar 	case '\n':
3383955d011SMarcel Moolenaar 	    rc = 1;
3393955d011SMarcel Moolenaar 	    break;
3403955d011SMarcel Moolenaar 	}
3413955d011SMarcel Moolenaar 	if (cp2 > cmd && rc > 0) {
3423955d011SMarcel Moolenaar 	    switch (cp2[-1]) {
3433955d011SMarcel Moolenaar 	    case ' ':
3443955d011SMarcel Moolenaar 	    case '\t':
3453955d011SMarcel Moolenaar 	    case '\n':
3463955d011SMarcel Moolenaar 		break;
3473955d011SMarcel Moolenaar 	    default:
3483955d011SMarcel Moolenaar 		rc = 0;			/* no match */
3493955d011SMarcel Moolenaar 		break;
3503955d011SMarcel Moolenaar 	    }
3513955d011SMarcel Moolenaar 	}
3523955d011SMarcel Moolenaar     }
3533955d011SMarcel Moolenaar     free(mp);
3543955d011SMarcel Moolenaar     return (rc);
3553955d011SMarcel Moolenaar }
3563955d011SMarcel Moolenaar 
3573955d011SMarcel Moolenaar typedef struct meta_file_s {
3583955d011SMarcel Moolenaar     FILE *fp;
3593955d011SMarcel Moolenaar     GNode *gn;
3603955d011SMarcel Moolenaar } meta_file_t;
3613955d011SMarcel Moolenaar 
3623955d011SMarcel Moolenaar static int
3633955d011SMarcel Moolenaar printCMD(void *cmdp, void *mfpp)
3643955d011SMarcel Moolenaar {
3653955d011SMarcel Moolenaar     meta_file_t *mfp = mfpp;
3663955d011SMarcel Moolenaar     char *cmd = cmdp;
3673955d011SMarcel Moolenaar     char *cp = NULL;
3683955d011SMarcel Moolenaar 
3693955d011SMarcel Moolenaar     if (strchr(cmd, '$')) {
370be19d90bSSimon J. Gerraty 	cmd = cp = Var_Subst(NULL, cmd, mfp->gn, VARF_WANTRES);
3713955d011SMarcel Moolenaar     }
3723955d011SMarcel Moolenaar     fprintf(mfp->fp, "CMD %s\n", cmd);
3733955d011SMarcel Moolenaar     free(cp);
3743955d011SMarcel Moolenaar     return 0;
3753955d011SMarcel Moolenaar }
3763955d011SMarcel Moolenaar 
3773955d011SMarcel Moolenaar /*
3783955d011SMarcel Moolenaar  * Certain node types never get a .meta file
3793955d011SMarcel Moolenaar  */
3803955d011SMarcel Moolenaar #define SKIP_META_TYPE(_type) do { \
3813955d011SMarcel Moolenaar     if ((gn->type & __CONCAT(OP_, _type))) {	\
382*b778b302SSimon J. Gerraty 	if (verbose) { \
3833955d011SMarcel Moolenaar 	    fprintf(debug_file, "Skipping meta for %s: .%s\n", \
3843955d011SMarcel Moolenaar 		    gn->name, __STRING(_type));		       \
3853955d011SMarcel Moolenaar 	} \
386*b778b302SSimon J. Gerraty 	return FALSE; \
3873955d011SMarcel Moolenaar     } \
3883955d011SMarcel Moolenaar } while (0)
3893955d011SMarcel Moolenaar 
390*b778b302SSimon J. Gerraty 
391*b778b302SSimon J. Gerraty /*
392*b778b302SSimon J. Gerraty  * Do we need/want a .meta file ?
393*b778b302SSimon J. Gerraty  */
394*b778b302SSimon J. Gerraty static Boolean
395*b778b302SSimon J. Gerraty meta_needed(GNode *gn, const char *dname, const char *tname,
396*b778b302SSimon J. Gerraty 	     char *objdir, int verbose)
397*b778b302SSimon J. Gerraty {
398*b778b302SSimon J. Gerraty     struct stat fs;
399*b778b302SSimon J. Gerraty 
400*b778b302SSimon J. Gerraty     if (verbose)
401*b778b302SSimon J. Gerraty 	verbose = DEBUG(META);
402*b778b302SSimon J. Gerraty 
403*b778b302SSimon J. Gerraty     /* This may be a phony node which we don't want meta data for... */
404*b778b302SSimon J. Gerraty     /* Skip .meta for .BEGIN, .END, .ERROR etc as well. */
405*b778b302SSimon J. Gerraty     /* Or it may be explicitly flagged as .NOMETA */
406*b778b302SSimon J. Gerraty     SKIP_META_TYPE(NOMETA);
407*b778b302SSimon J. Gerraty     /* Unless it is explicitly flagged as .META */
408*b778b302SSimon J. Gerraty     if (!(gn->type & OP_META)) {
409*b778b302SSimon J. Gerraty 	SKIP_META_TYPE(PHONY);
410*b778b302SSimon J. Gerraty 	SKIP_META_TYPE(SPECIAL);
411*b778b302SSimon J. Gerraty 	SKIP_META_TYPE(MAKE);
412*b778b302SSimon J. Gerraty     }
413*b778b302SSimon J. Gerraty 
414*b778b302SSimon J. Gerraty     /* Check if there are no commands to execute. */
415*b778b302SSimon J. Gerraty     if (Lst_IsEmpty(gn->commands)) {
416*b778b302SSimon J. Gerraty 	if (verbose)
417*b778b302SSimon J. Gerraty 	    fprintf(debug_file, "Skipping meta for %s: no commands\n",
418*b778b302SSimon J. Gerraty 		    gn->name);
419*b778b302SSimon J. Gerraty 	return FALSE;
420*b778b302SSimon J. Gerraty     }
421*b778b302SSimon J. Gerraty     if ((gn->type & (OP_META|OP_SUBMAKE)) == OP_SUBMAKE) {
422*b778b302SSimon J. Gerraty 	/* OP_SUBMAKE is a bit too aggressive */
423*b778b302SSimon J. Gerraty 	if (Lst_ForEach(gn->commands, is_submake, gn)) {
424*b778b302SSimon J. Gerraty 	    if (DEBUG(META))
425*b778b302SSimon J. Gerraty 		fprintf(debug_file, "Skipping meta for %s: .SUBMAKE\n",
426*b778b302SSimon J. Gerraty 			gn->name);
427*b778b302SSimon J. Gerraty 	    return FALSE;
428*b778b302SSimon J. Gerraty 	}
429*b778b302SSimon J. Gerraty     }
430*b778b302SSimon J. Gerraty 
431*b778b302SSimon J. Gerraty     /* The object directory may not exist. Check it.. */
432*b778b302SSimon J. Gerraty     if (stat(dname, &fs) != 0) {
433*b778b302SSimon J. Gerraty 	if (verbose)
434*b778b302SSimon J. Gerraty 	    fprintf(debug_file, "Skipping meta for %s: no .OBJDIR\n",
435*b778b302SSimon J. Gerraty 		    gn->name);
436*b778b302SSimon J. Gerraty 	return FALSE;
437*b778b302SSimon J. Gerraty     }
438*b778b302SSimon J. Gerraty 
439*b778b302SSimon J. Gerraty     /* make sure these are canonical */
440*b778b302SSimon J. Gerraty     if (cached_realpath(dname, objdir))
441*b778b302SSimon J. Gerraty 	dname = objdir;
442*b778b302SSimon J. Gerraty 
443*b778b302SSimon J. Gerraty     /* If we aren't in the object directory, don't create a meta file. */
444*b778b302SSimon J. Gerraty     if (!metaCurdirOk && strcmp(curdir, dname) == 0) {
445*b778b302SSimon J. Gerraty 	if (verbose)
446*b778b302SSimon J. Gerraty 	    fprintf(debug_file, "Skipping meta for %s: .OBJDIR == .CURDIR\n",
447*b778b302SSimon J. Gerraty 		    gn->name);
448*b778b302SSimon J. Gerraty 	return FALSE;
449*b778b302SSimon J. Gerraty     }
450*b778b302SSimon J. Gerraty     return TRUE;
451*b778b302SSimon J. Gerraty }
452*b778b302SSimon J. Gerraty 
453*b778b302SSimon J. Gerraty 
4543955d011SMarcel Moolenaar static FILE *
4553955d011SMarcel Moolenaar meta_create(BuildMon *pbm, GNode *gn)
4563955d011SMarcel Moolenaar {
4573955d011SMarcel Moolenaar     meta_file_t mf;
4583955d011SMarcel Moolenaar     char buf[MAXPATHLEN];
4593955d011SMarcel Moolenaar     char objdir[MAXPATHLEN];
4603955d011SMarcel Moolenaar     char **ptr;
4613955d011SMarcel Moolenaar     const char *dname;
4623955d011SMarcel Moolenaar     const char *tname;
4633955d011SMarcel Moolenaar     char *fname;
4643955d011SMarcel Moolenaar     const char *cp;
4653955d011SMarcel Moolenaar     char *p[4];				/* >= possible uses */
4663955d011SMarcel Moolenaar     int i;
4673955d011SMarcel Moolenaar 
4683955d011SMarcel Moolenaar     mf.fp = NULL;
4693955d011SMarcel Moolenaar     i = 0;
4703955d011SMarcel Moolenaar 
4713955d011SMarcel Moolenaar     dname = Var_Value(".OBJDIR", gn, &p[i++]);
4723955d011SMarcel Moolenaar     tname = Var_Value(TARGET, gn, &p[i++]);
4733955d011SMarcel Moolenaar 
474*b778b302SSimon J. Gerraty     /* if this succeeds objdir is realpath of dname */
475*b778b302SSimon J. Gerraty     if (!meta_needed(gn, dname, tname, objdir, TRUE))
4763955d011SMarcel Moolenaar 	goto out;
4773955d011SMarcel Moolenaar     dname = objdir;
4783955d011SMarcel Moolenaar 
4793955d011SMarcel Moolenaar     if (metaVerbose) {
4803955d011SMarcel Moolenaar 	char *mp;
4813955d011SMarcel Moolenaar 
4823955d011SMarcel Moolenaar 	/* Describe the target we are building */
483be19d90bSSimon J. Gerraty 	mp = Var_Subst(NULL, "${" MAKE_META_PREFIX "}", gn, VARF_WANTRES);
4843955d011SMarcel Moolenaar 	if (*mp)
4853955d011SMarcel Moolenaar 	    fprintf(stdout, "%s\n", mp);
4863955d011SMarcel Moolenaar 	free(mp);
4873955d011SMarcel Moolenaar     }
4883955d011SMarcel Moolenaar     /* Get the basename of the target */
4893955d011SMarcel Moolenaar     if ((cp = strrchr(tname, '/')) == NULL) {
4903955d011SMarcel Moolenaar 	cp = tname;
4913955d011SMarcel Moolenaar     } else {
4923955d011SMarcel Moolenaar 	cp++;
4933955d011SMarcel Moolenaar     }
4943955d011SMarcel Moolenaar 
4953955d011SMarcel Moolenaar     fflush(stdout);
4963955d011SMarcel Moolenaar 
4973955d011SMarcel Moolenaar     if (!writeMeta)
4983955d011SMarcel Moolenaar 	/* Don't create meta data. */
4993955d011SMarcel Moolenaar 	goto out;
5003955d011SMarcel Moolenaar 
5013955d011SMarcel Moolenaar     fname = meta_name(gn, pbm->meta_fname, sizeof(pbm->meta_fname),
502*b778b302SSimon J. Gerraty 		      dname, tname, objdir);
5033955d011SMarcel Moolenaar 
5043955d011SMarcel Moolenaar #ifdef DEBUG_META_MODE
5053955d011SMarcel Moolenaar     if (DEBUG(META))
5063955d011SMarcel Moolenaar 	fprintf(debug_file, "meta_create: %s\n", fname);
5073955d011SMarcel Moolenaar #endif
5083955d011SMarcel Moolenaar 
5093955d011SMarcel Moolenaar     if ((mf.fp = fopen(fname, "w")) == NULL)
5103955d011SMarcel Moolenaar 	err(1, "Could not open meta file '%s'", fname);
5113955d011SMarcel Moolenaar 
5123955d011SMarcel Moolenaar     fprintf(mf.fp, "# Meta data file %s\n", fname);
5133955d011SMarcel Moolenaar 
5143955d011SMarcel Moolenaar     mf.gn = gn;
5153955d011SMarcel Moolenaar 
5163955d011SMarcel Moolenaar     Lst_ForEach(gn->commands, printCMD, &mf);
5173955d011SMarcel Moolenaar 
5183955d011SMarcel Moolenaar     fprintf(mf.fp, "CWD %s\n", getcwd(buf, sizeof(buf)));
5193955d011SMarcel Moolenaar     fprintf(mf.fp, "TARGET %s\n", tname);
5203955d011SMarcel Moolenaar 
5213955d011SMarcel Moolenaar     if (metaEnv) {
5223955d011SMarcel Moolenaar 	for (ptr = environ; *ptr != NULL; ptr++)
5233955d011SMarcel Moolenaar 	    fprintf(mf.fp, "ENV %s\n", *ptr);
5243955d011SMarcel Moolenaar     }
5253955d011SMarcel Moolenaar 
5263955d011SMarcel Moolenaar     fprintf(mf.fp, "-- command output --\n");
5273955d011SMarcel Moolenaar     fflush(mf.fp);
5283955d011SMarcel Moolenaar 
5293955d011SMarcel Moolenaar     Var_Append(".MAKE.META.FILES", fname, VAR_GLOBAL);
5303955d011SMarcel Moolenaar     Var_Append(".MAKE.META.CREATED", fname, VAR_GLOBAL);
5313955d011SMarcel Moolenaar 
5323955d011SMarcel Moolenaar     gn->type |= OP_META;		/* in case anyone wants to know */
5333955d011SMarcel Moolenaar     if (metaSilent) {
5343955d011SMarcel Moolenaar 	    gn->type |= OP_SILENT;
5353955d011SMarcel Moolenaar     }
5363955d011SMarcel Moolenaar  out:
5373955d011SMarcel Moolenaar     for (i--; i >= 0; i--) {
5383955d011SMarcel Moolenaar 	free(p[i]);
5393955d011SMarcel Moolenaar     }
5403955d011SMarcel Moolenaar 
5413955d011SMarcel Moolenaar     return (mf.fp);
5423955d011SMarcel Moolenaar }
5433955d011SMarcel Moolenaar 
5443955d011SMarcel Moolenaar static Boolean
5453955d011SMarcel Moolenaar boolValue(char *s)
5463955d011SMarcel Moolenaar {
5473955d011SMarcel Moolenaar     switch(*s) {
5483955d011SMarcel Moolenaar     case '0':
5493955d011SMarcel Moolenaar     case 'N':
5503955d011SMarcel Moolenaar     case 'n':
5513955d011SMarcel Moolenaar     case 'F':
5523955d011SMarcel Moolenaar     case 'f':
5533955d011SMarcel Moolenaar 	return FALSE;
5543955d011SMarcel Moolenaar     }
5553955d011SMarcel Moolenaar     return TRUE;
5563955d011SMarcel Moolenaar }
5573955d011SMarcel Moolenaar 
5581748de26SSimon J. Gerraty /*
5591748de26SSimon J. Gerraty  * Initialization we need before reading makefiles.
5601748de26SSimon J. Gerraty  */
5613955d011SMarcel Moolenaar void
56252d86256SSimon J. Gerraty meta_init(void)
5631748de26SSimon J. Gerraty {
5641748de26SSimon J. Gerraty #ifdef USE_FILEMON
5651748de26SSimon J. Gerraty 	/* this allows makefiles to test if we have filemon support */
5661748de26SSimon J. Gerraty 	Var_Set(".MAKE.PATH_FILEMON", _PATH_FILEMON, VAR_GLOBAL, 0);
5671748de26SSimon J. Gerraty #endif
5681748de26SSimon J. Gerraty }
5691748de26SSimon J. Gerraty 
5701748de26SSimon J. Gerraty 
571*b778b302SSimon J. Gerraty #define get_mode_bf(bf, token) \
572*b778b302SSimon J. Gerraty     if ((cp = strstr(make_mode, token))) \
573*b778b302SSimon J. Gerraty 	bf = boolValue(&cp[sizeof(token) - 1])
574*b778b302SSimon J. Gerraty 
5751748de26SSimon J. Gerraty /*
5761748de26SSimon J. Gerraty  * Initialization we need after reading makefiles.
5771748de26SSimon J. Gerraty  */
5781748de26SSimon J. Gerraty void
5791748de26SSimon J. Gerraty meta_mode_init(const char *make_mode)
5803955d011SMarcel Moolenaar {
5813955d011SMarcel Moolenaar     static int once = 0;
5823955d011SMarcel Moolenaar     char *cp;
5833955d011SMarcel Moolenaar 
5843955d011SMarcel Moolenaar     useMeta = TRUE;
5853955d011SMarcel Moolenaar     useFilemon = TRUE;
5863955d011SMarcel Moolenaar     writeMeta = TRUE;
5873955d011SMarcel Moolenaar 
5883955d011SMarcel Moolenaar     if (make_mode) {
5893955d011SMarcel Moolenaar 	if (strstr(make_mode, "env"))
5903955d011SMarcel Moolenaar 	    metaEnv = TRUE;
5913955d011SMarcel Moolenaar 	if (strstr(make_mode, "verb"))
5923955d011SMarcel Moolenaar 	    metaVerbose = TRUE;
5933955d011SMarcel Moolenaar 	if (strstr(make_mode, "read"))
5943955d011SMarcel Moolenaar 	    writeMeta = FALSE;
5953955d011SMarcel Moolenaar 	if (strstr(make_mode, "nofilemon"))
5963955d011SMarcel Moolenaar 	    useFilemon = FALSE;
5973955d011SMarcel Moolenaar 	if (strstr(make_mode, "ignore-cmd"))
5983955d011SMarcel Moolenaar 	    metaIgnoreCMDs = TRUE;
599*b778b302SSimon J. Gerraty 	if (useFilemon)
600*b778b302SSimon J. Gerraty 	    get_mode_bf(filemonMissing, "missing-filemon=");
601*b778b302SSimon J. Gerraty 	get_mode_bf(metaCurdirOk, "curdirok=");
602*b778b302SSimon J. Gerraty 	get_mode_bf(metaMissing, "missing-meta=");
603*b778b302SSimon J. Gerraty 	get_mode_bf(metaSilent, "silent=");
6043955d011SMarcel Moolenaar     }
6053955d011SMarcel Moolenaar     if (metaVerbose && !Var_Exists(MAKE_META_PREFIX, VAR_GLOBAL)) {
6063955d011SMarcel Moolenaar 	/*
6073955d011SMarcel Moolenaar 	 * The default value for MAKE_META_PREFIX
6083955d011SMarcel Moolenaar 	 * prints the absolute path of the target.
6093955d011SMarcel Moolenaar 	 * This works be cause :H will generate '.' if there is no /
6103955d011SMarcel Moolenaar 	 * and :tA will resolve that to cwd.
6113955d011SMarcel Moolenaar 	 */
6123955d011SMarcel Moolenaar 	Var_Set(MAKE_META_PREFIX, "Building ${.TARGET:H:tA}/${.TARGET:T}", VAR_GLOBAL, 0);
6133955d011SMarcel Moolenaar     }
6143955d011SMarcel Moolenaar     if (once)
6153955d011SMarcel Moolenaar 	return;
6163955d011SMarcel Moolenaar     once = 1;
6173955d011SMarcel Moolenaar     memset(&Mybm, 0, sizeof(Mybm));
6183955d011SMarcel Moolenaar     /*
6193955d011SMarcel Moolenaar      * We consider ourselves master of all within ${.MAKE.META.BAILIWICK}
6203955d011SMarcel Moolenaar      */
6213955d011SMarcel Moolenaar     metaBailiwick = Lst_Init(FALSE);
622be19d90bSSimon J. Gerraty     metaBailiwickStr = Var_Subst(NULL, "${.MAKE.META.BAILIWICK:O:u:tA}",
623be19d90bSSimon J. Gerraty 	VAR_GLOBAL, VARF_WANTRES);
624be19d90bSSimon J. Gerraty     if (metaBailiwickStr) {
625be19d90bSSimon J. Gerraty 	str2Lst_Append(metaBailiwick, metaBailiwickStr, NULL);
6263955d011SMarcel Moolenaar     }
62751ee2c1cSSimon J. Gerraty     /*
62851ee2c1cSSimon J. Gerraty      * We ignore any paths that start with ${.MAKE.META.IGNORE_PATHS}
62951ee2c1cSSimon J. Gerraty      */
63051ee2c1cSSimon J. Gerraty     metaIgnorePaths = Lst_Init(FALSE);
63151ee2c1cSSimon J. Gerraty     Var_Append(MAKE_META_IGNORE_PATHS,
63251ee2c1cSSimon J. Gerraty 	       "/dev /etc /proc /tmp /var/run /var/tmp ${TMPDIR}", VAR_GLOBAL);
633be19d90bSSimon J. Gerraty     metaIgnorePathsStr = Var_Subst(NULL,
6344c620fe5SSimon J. Gerraty 		   "${" MAKE_META_IGNORE_PATHS ":O:u:tA}", VAR_GLOBAL,
635be19d90bSSimon J. Gerraty 		   VARF_WANTRES);
636be19d90bSSimon J. Gerraty     if (metaIgnorePathsStr) {
637be19d90bSSimon J. Gerraty 	str2Lst_Append(metaIgnorePaths, metaIgnorePathsStr, NULL);
63851ee2c1cSSimon J. Gerraty     }
639e48f47ddSSimon J. Gerraty 
640e48f47ddSSimon J. Gerraty     /*
641e48f47ddSSimon J. Gerraty      * We ignore any paths that match ${.MAKE.META.IGNORE_PATTERNS}
642e48f47ddSSimon J. Gerraty      */
643e48f47ddSSimon J. Gerraty     cp = NULL;
644e48f47ddSSimon J. Gerraty     if (Var_Value(MAKE_META_IGNORE_PATTERNS, VAR_GLOBAL, &cp)) {
645e48f47ddSSimon J. Gerraty 	metaIgnorePatterns = TRUE;
646e48f47ddSSimon J. Gerraty 	free(cp);
647e48f47ddSSimon J. Gerraty     }
6483955d011SMarcel Moolenaar }
6493955d011SMarcel Moolenaar 
6503955d011SMarcel Moolenaar /*
6513955d011SMarcel Moolenaar  * In each case below we allow for job==NULL
6523955d011SMarcel Moolenaar  */
6533955d011SMarcel Moolenaar void
6543955d011SMarcel Moolenaar meta_job_start(Job *job, GNode *gn)
6553955d011SMarcel Moolenaar {
6563955d011SMarcel Moolenaar     BuildMon *pbm;
6573955d011SMarcel Moolenaar 
6583955d011SMarcel Moolenaar     if (job != NULL) {
6593955d011SMarcel Moolenaar 	pbm = &job->bm;
6603955d011SMarcel Moolenaar     } else {
6613955d011SMarcel Moolenaar 	pbm = &Mybm;
6623955d011SMarcel Moolenaar     }
6633955d011SMarcel Moolenaar     pbm->mfp = meta_create(pbm, gn);
6643955d011SMarcel Moolenaar #ifdef USE_FILEMON_ONCE
6653955d011SMarcel Moolenaar     /* compat mode we open the filemon dev once per command */
6663955d011SMarcel Moolenaar     if (job == NULL)
6673955d011SMarcel Moolenaar 	return;
6683955d011SMarcel Moolenaar #endif
6693955d011SMarcel Moolenaar #ifdef USE_FILEMON
6703955d011SMarcel Moolenaar     if (pbm->mfp != NULL && useFilemon) {
6713955d011SMarcel Moolenaar 	filemon_open(pbm);
6723955d011SMarcel Moolenaar     } else {
6733955d011SMarcel Moolenaar 	pbm->mon_fd = pbm->filemon_fd = -1;
6743955d011SMarcel Moolenaar     }
6753955d011SMarcel Moolenaar #endif
6763955d011SMarcel Moolenaar }
6773955d011SMarcel Moolenaar 
6783955d011SMarcel Moolenaar /*
6793955d011SMarcel Moolenaar  * The child calls this before doing anything.
6803955d011SMarcel Moolenaar  * It does not disturb our state.
6813955d011SMarcel Moolenaar  */
6823955d011SMarcel Moolenaar void
6833955d011SMarcel Moolenaar meta_job_child(Job *job)
6843955d011SMarcel Moolenaar {
6853955d011SMarcel Moolenaar #ifdef USE_FILEMON
6863955d011SMarcel Moolenaar     BuildMon *pbm;
6873955d011SMarcel Moolenaar 
6883955d011SMarcel Moolenaar     if (job != NULL) {
6893955d011SMarcel Moolenaar 	pbm = &job->bm;
6903955d011SMarcel Moolenaar     } else {
6913955d011SMarcel Moolenaar 	pbm = &Mybm;
6923955d011SMarcel Moolenaar     }
693db29cad8SSimon J. Gerraty     if (pbm->mfp != NULL) {
694db29cad8SSimon J. Gerraty 	close(fileno(pbm->mfp));
695db29cad8SSimon J. Gerraty 	if (useFilemon) {
696db29cad8SSimon J. Gerraty 	    pid_t pid;
697db29cad8SSimon J. Gerraty 
6983955d011SMarcel Moolenaar 	    pid = getpid();
6993955d011SMarcel Moolenaar 	    if (ioctl(pbm->filemon_fd, FILEMON_SET_PID, &pid) < 0) {
7003955d011SMarcel Moolenaar 		err(1, "Could not set filemon pid!");
7013955d011SMarcel Moolenaar 	    }
7023955d011SMarcel Moolenaar 	}
703db29cad8SSimon J. Gerraty     }
7043955d011SMarcel Moolenaar #endif
7053955d011SMarcel Moolenaar }
7063955d011SMarcel Moolenaar 
7073955d011SMarcel Moolenaar void
7083955d011SMarcel Moolenaar meta_job_error(Job *job, GNode *gn, int flags, int status)
7093955d011SMarcel Moolenaar {
7103955d011SMarcel Moolenaar     char cwd[MAXPATHLEN];
7113955d011SMarcel Moolenaar     BuildMon *pbm;
7123955d011SMarcel Moolenaar 
7133955d011SMarcel Moolenaar     if (job != NULL) {
7143955d011SMarcel Moolenaar 	pbm = &job->bm;
7153955d011SMarcel Moolenaar 	if (!gn)
7163955d011SMarcel Moolenaar 	    gn = job->node;
717be19d90bSSimon J. Gerraty     } else {
7183955d011SMarcel Moolenaar 	pbm = &Mybm;
7193955d011SMarcel Moolenaar     }
7203955d011SMarcel Moolenaar     if (pbm->mfp != NULL) {
7213955d011SMarcel Moolenaar 	fprintf(pbm->mfp, "*** Error code %d%s\n",
7223955d011SMarcel Moolenaar 		status,
7233955d011SMarcel Moolenaar 		(flags & JOB_IGNERR) ?
7243955d011SMarcel Moolenaar 		"(ignored)" : "");
7253955d011SMarcel Moolenaar     }
7263955d011SMarcel Moolenaar     if (gn) {
7273955d011SMarcel Moolenaar 	Var_Set(".ERROR_TARGET", gn->path ? gn->path : gn->name, VAR_GLOBAL, 0);
7283955d011SMarcel Moolenaar     }
7293955d011SMarcel Moolenaar     getcwd(cwd, sizeof(cwd));
7303955d011SMarcel Moolenaar     Var_Set(".ERROR_CWD", cwd, VAR_GLOBAL, 0);
731be19d90bSSimon J. Gerraty     if (pbm->meta_fname[0]) {
7323955d011SMarcel Moolenaar 	Var_Set(".ERROR_META_FILE", pbm->meta_fname, VAR_GLOBAL, 0);
7333955d011SMarcel Moolenaar     }
7343955d011SMarcel Moolenaar     meta_job_finish(job);
7353955d011SMarcel Moolenaar }
7363955d011SMarcel Moolenaar 
7373955d011SMarcel Moolenaar void
7383955d011SMarcel Moolenaar meta_job_output(Job *job, char *cp, const char *nl)
7393955d011SMarcel Moolenaar {
7403955d011SMarcel Moolenaar     BuildMon *pbm;
7413955d011SMarcel Moolenaar 
7423955d011SMarcel Moolenaar     if (job != NULL) {
7433955d011SMarcel Moolenaar 	pbm = &job->bm;
7443955d011SMarcel Moolenaar     } else {
7453955d011SMarcel Moolenaar 	pbm = &Mybm;
7463955d011SMarcel Moolenaar     }
7473955d011SMarcel Moolenaar     if (pbm->mfp != NULL) {
7483955d011SMarcel Moolenaar 	if (metaVerbose) {
7493955d011SMarcel Moolenaar 	    static char *meta_prefix = NULL;
7503955d011SMarcel Moolenaar 	    static int meta_prefix_len;
7513955d011SMarcel Moolenaar 
7523955d011SMarcel Moolenaar 	    if (!meta_prefix) {
7533955d011SMarcel Moolenaar 		char *cp2;
7543955d011SMarcel Moolenaar 
7554c620fe5SSimon J. Gerraty 		meta_prefix = Var_Subst(NULL, "${" MAKE_META_PREFIX "}",
756be19d90bSSimon J. Gerraty 					VAR_GLOBAL, VARF_WANTRES);
7573955d011SMarcel Moolenaar 		if ((cp2 = strchr(meta_prefix, '$')))
7583955d011SMarcel Moolenaar 		    meta_prefix_len = cp2 - meta_prefix;
7593955d011SMarcel Moolenaar 		else
7603955d011SMarcel Moolenaar 		    meta_prefix_len = strlen(meta_prefix);
7613955d011SMarcel Moolenaar 	    }
7623955d011SMarcel Moolenaar 	    if (strncmp(cp, meta_prefix, meta_prefix_len) == 0) {
7633955d011SMarcel Moolenaar 		cp = strchr(cp+1, '\n');
7643955d011SMarcel Moolenaar 		if (!cp++)
7653955d011SMarcel Moolenaar 		    return;
7663955d011SMarcel Moolenaar 	    }
7673955d011SMarcel Moolenaar 	}
7683955d011SMarcel Moolenaar 	fprintf(pbm->mfp, "%s%s", cp, nl);
7693955d011SMarcel Moolenaar     }
7703955d011SMarcel Moolenaar }
7713955d011SMarcel Moolenaar 
772e48f47ddSSimon J. Gerraty int
7733955d011SMarcel Moolenaar meta_cmd_finish(void *pbmp)
7743955d011SMarcel Moolenaar {
775e48f47ddSSimon J. Gerraty     int error = 0;
7763955d011SMarcel Moolenaar #ifdef USE_FILEMON
7773955d011SMarcel Moolenaar     BuildMon *pbm = pbmp;
778e48f47ddSSimon J. Gerraty     int x;
7793955d011SMarcel Moolenaar 
7803955d011SMarcel Moolenaar     if (!pbm)
7813955d011SMarcel Moolenaar 	pbm = &Mybm;
7823955d011SMarcel Moolenaar 
7833955d011SMarcel Moolenaar     if (pbm->filemon_fd >= 0) {
784e48f47ddSSimon J. Gerraty 	if (close(pbm->filemon_fd) < 0)
785e48f47ddSSimon J. Gerraty 	    error = errno;
786e48f47ddSSimon J. Gerraty 	x = filemon_read(pbm->mfp, pbm->mon_fd);
787e48f47ddSSimon J. Gerraty 	if (error == 0 && x != 0)
788e48f47ddSSimon J. Gerraty 	    error = x;
7893955d011SMarcel Moolenaar 	pbm->filemon_fd = pbm->mon_fd = -1;
7903955d011SMarcel Moolenaar     }
7913955d011SMarcel Moolenaar #endif
792e48f47ddSSimon J. Gerraty     return error;
7933955d011SMarcel Moolenaar }
7943955d011SMarcel Moolenaar 
795e48f47ddSSimon J. Gerraty int
7963955d011SMarcel Moolenaar meta_job_finish(Job *job)
7973955d011SMarcel Moolenaar {
7983955d011SMarcel Moolenaar     BuildMon *pbm;
799e48f47ddSSimon J. Gerraty     int error = 0;
800e48f47ddSSimon J. Gerraty     int x;
8013955d011SMarcel Moolenaar 
8023955d011SMarcel Moolenaar     if (job != NULL) {
8033955d011SMarcel Moolenaar 	pbm = &job->bm;
8043955d011SMarcel Moolenaar     } else {
8053955d011SMarcel Moolenaar 	pbm = &Mybm;
8063955d011SMarcel Moolenaar     }
8073955d011SMarcel Moolenaar     if (pbm->mfp != NULL) {
808e48f47ddSSimon J. Gerraty 	error = meta_cmd_finish(pbm);
809e48f47ddSSimon J. Gerraty 	x = fclose(pbm->mfp);
810e48f47ddSSimon J. Gerraty 	if (error == 0 && x != 0)
811e48f47ddSSimon J. Gerraty 	    error = errno;
8123955d011SMarcel Moolenaar 	pbm->mfp = NULL;
8133955d011SMarcel Moolenaar 	pbm->meta_fname[0] = '\0';
8143955d011SMarcel Moolenaar     }
815e48f47ddSSimon J. Gerraty     return error;
8163955d011SMarcel Moolenaar }
8173955d011SMarcel Moolenaar 
818be19d90bSSimon J. Gerraty void
819be19d90bSSimon J. Gerraty meta_finish(void)
820be19d90bSSimon J. Gerraty {
821be19d90bSSimon J. Gerraty     Lst_Destroy(metaBailiwick, NULL);
822be19d90bSSimon J. Gerraty     free(metaBailiwickStr);
823be19d90bSSimon J. Gerraty     Lst_Destroy(metaIgnorePaths, NULL);
824be19d90bSSimon J. Gerraty     free(metaIgnorePathsStr);
825be19d90bSSimon J. Gerraty }
826be19d90bSSimon J. Gerraty 
8273955d011SMarcel Moolenaar /*
8283955d011SMarcel Moolenaar  * Fetch a full line from fp - growing bufp if needed
8293955d011SMarcel Moolenaar  * Return length in bufp.
8303955d011SMarcel Moolenaar  */
8313955d011SMarcel Moolenaar static int
8323955d011SMarcel Moolenaar fgetLine(char **bufp, size_t *szp, int o, FILE *fp)
8333955d011SMarcel Moolenaar {
8343955d011SMarcel Moolenaar     char *buf = *bufp;
8353955d011SMarcel Moolenaar     size_t bufsz = *szp;
8363955d011SMarcel Moolenaar     struct stat fs;
8373955d011SMarcel Moolenaar     int x;
8383955d011SMarcel Moolenaar 
8393955d011SMarcel Moolenaar     if (fgets(&buf[o], bufsz - o, fp) != NULL) {
8403955d011SMarcel Moolenaar     check_newline:
8413955d011SMarcel Moolenaar 	x = o + strlen(&buf[o]);
8423955d011SMarcel Moolenaar 	if (buf[x - 1] == '\n')
8433955d011SMarcel Moolenaar 	    return x;
8443955d011SMarcel Moolenaar 	/*
8453955d011SMarcel Moolenaar 	 * We need to grow the buffer.
8463955d011SMarcel Moolenaar 	 * The meta file can give us a clue.
8473955d011SMarcel Moolenaar 	 */
8483955d011SMarcel Moolenaar 	if (fstat(fileno(fp), &fs) == 0) {
8493955d011SMarcel Moolenaar 	    size_t newsz;
8503955d011SMarcel Moolenaar 	    char *p;
8513955d011SMarcel Moolenaar 
8523955d011SMarcel Moolenaar 	    newsz = ROUNDUP((fs.st_size / 2), BUFSIZ);
8533955d011SMarcel Moolenaar 	    if (newsz <= bufsz)
8543955d011SMarcel Moolenaar 		newsz = ROUNDUP(fs.st_size, BUFSIZ);
8553955d011SMarcel Moolenaar 	    if (DEBUG(META))
8563955d011SMarcel Moolenaar 		fprintf(debug_file, "growing buffer %u -> %u\n",
8573955d011SMarcel Moolenaar 			(unsigned)bufsz, (unsigned)newsz);
8583955d011SMarcel Moolenaar 	    p = bmake_realloc(buf, newsz);
8593955d011SMarcel Moolenaar 	    if (p) {
8603955d011SMarcel Moolenaar 		*bufp = buf = p;
8613955d011SMarcel Moolenaar 		*szp = bufsz = newsz;
8623955d011SMarcel Moolenaar 		/* fetch the rest */
8633955d011SMarcel Moolenaar 		if (!fgets(&buf[x], bufsz - x, fp))
8643955d011SMarcel Moolenaar 		    return x;		/* truncated! */
8653955d011SMarcel Moolenaar 		goto check_newline;
8663955d011SMarcel Moolenaar 	    }
8673955d011SMarcel Moolenaar 	}
8683955d011SMarcel Moolenaar     }
8693955d011SMarcel Moolenaar     return 0;
8703955d011SMarcel Moolenaar }
8713955d011SMarcel Moolenaar 
8723955d011SMarcel Moolenaar static int
8733955d011SMarcel Moolenaar prefix_match(void *p, void *q)
8743955d011SMarcel Moolenaar {
8753955d011SMarcel Moolenaar     const char *prefix = p;
8763955d011SMarcel Moolenaar     const char *path = q;
8773955d011SMarcel Moolenaar     size_t n = strlen(prefix);
8783955d011SMarcel Moolenaar 
8793955d011SMarcel Moolenaar     return (0 == strncmp(path, prefix, n));
8803955d011SMarcel Moolenaar }
8813955d011SMarcel Moolenaar 
8823955d011SMarcel Moolenaar static int
8833955d011SMarcel Moolenaar string_match(const void *p, const void *q)
8843955d011SMarcel Moolenaar {
8853955d011SMarcel Moolenaar     const char *p1 = p;
8863955d011SMarcel Moolenaar     const char *p2 = q;
8873955d011SMarcel Moolenaar 
8883955d011SMarcel Moolenaar     return strcmp(p1, p2);
8893955d011SMarcel Moolenaar }
8903955d011SMarcel Moolenaar 
8913955d011SMarcel Moolenaar 
8923955d011SMarcel Moolenaar /*
8933955d011SMarcel Moolenaar  * When running with 'meta' functionality, a target can be out-of-date
894db29cad8SSimon J. Gerraty  * if any of the references in its meta data file is more recent.
8953955d011SMarcel Moolenaar  * We have to track the latestdir on a per-process basis.
8963955d011SMarcel Moolenaar  */
897db29cad8SSimon J. Gerraty #define LCWD_VNAME_FMT ".meta.%d.lcwd"
8983955d011SMarcel Moolenaar #define LDIR_VNAME_FMT ".meta.%d.ldir"
8993955d011SMarcel Moolenaar 
9003955d011SMarcel Moolenaar /*
9013955d011SMarcel Moolenaar  * It is possible that a .meta file is corrupted,
9023955d011SMarcel Moolenaar  * if we detect this we want to reproduce it.
9033955d011SMarcel Moolenaar  * Setting oodate TRUE will have that effect.
9043955d011SMarcel Moolenaar  */
9053955d011SMarcel Moolenaar #define CHECK_VALID_META(p) if (!(p && *p)) { \
9063955d011SMarcel Moolenaar     warnx("%s: %d: malformed", fname, lineno); \
9073955d011SMarcel Moolenaar     oodate = TRUE; \
9083955d011SMarcel Moolenaar     continue; \
9093955d011SMarcel Moolenaar     }
9103955d011SMarcel Moolenaar 
9110dede8b0SSimon J. Gerraty #define DEQUOTE(p) if (*p == '\'') {	\
9120dede8b0SSimon J. Gerraty     char *ep; \
9130dede8b0SSimon J. Gerraty     p++; \
9140dede8b0SSimon J. Gerraty     if ((ep = strchr(p, '\''))) \
9150dede8b0SSimon J. Gerraty 	*ep = '\0'; \
9160dede8b0SSimon J. Gerraty     }
9170dede8b0SSimon J. Gerraty 
9183955d011SMarcel Moolenaar Boolean
9193955d011SMarcel Moolenaar meta_oodate(GNode *gn, Boolean oodate)
9203955d011SMarcel Moolenaar {
9213955d011SMarcel Moolenaar     static char *tmpdir = NULL;
9223955d011SMarcel Moolenaar     static char cwd[MAXPATHLEN];
923db29cad8SSimon J. Gerraty     char lcwd_vname[64];
9243955d011SMarcel Moolenaar     char ldir_vname[64];
925db29cad8SSimon J. Gerraty     char lcwd[MAXPATHLEN];
9263955d011SMarcel Moolenaar     char latestdir[MAXPATHLEN];
9273955d011SMarcel Moolenaar     char fname[MAXPATHLEN];
9283955d011SMarcel Moolenaar     char fname1[MAXPATHLEN];
9293955d011SMarcel Moolenaar     char fname2[MAXPATHLEN];
930db29cad8SSimon J. Gerraty     char fname3[MAXPATHLEN];
931*b778b302SSimon J. Gerraty     const char *dname;
932*b778b302SSimon J. Gerraty     const char *tname;
9333955d011SMarcel Moolenaar     char *p;
9343955d011SMarcel Moolenaar     char *cp;
9350dede8b0SSimon J. Gerraty     char *link_src;
9360dede8b0SSimon J. Gerraty     char *move_target;
9373955d011SMarcel Moolenaar     static size_t cwdlen = 0;
9383955d011SMarcel Moolenaar     static size_t tmplen = 0;
9393955d011SMarcel Moolenaar     FILE *fp;
9403cbdda60SSimon J. Gerraty     Boolean needOODATE = FALSE;
9413955d011SMarcel Moolenaar     Lst missingFiles;
942*b778b302SSimon J. Gerraty     char *pa[4];			/* >= possible uses */
943*b778b302SSimon J. Gerraty     int i;
944*b778b302SSimon J. Gerraty     int have_filemon = FALSE;
9453955d011SMarcel Moolenaar 
9463955d011SMarcel Moolenaar     if (oodate)
9473955d011SMarcel Moolenaar 	return oodate;		/* we're done */
9483955d011SMarcel Moolenaar 
949*b778b302SSimon J. Gerraty     i = 0;
950*b778b302SSimon J. Gerraty 
951*b778b302SSimon J. Gerraty     dname = Var_Value(".OBJDIR", gn, &pa[i++]);
952*b778b302SSimon J. Gerraty     tname = Var_Value(TARGET, gn, &pa[i++]);
953*b778b302SSimon J. Gerraty 
954*b778b302SSimon J. Gerraty     /* if this succeeds fname3 is realpath of dname */
955*b778b302SSimon J. Gerraty     if (!meta_needed(gn, dname, tname, fname3, FALSE))
956*b778b302SSimon J. Gerraty 	goto oodate_out;
957*b778b302SSimon J. Gerraty     dname = fname3;
958*b778b302SSimon J. Gerraty 
9593955d011SMarcel Moolenaar     missingFiles = Lst_Init(FALSE);
9603955d011SMarcel Moolenaar 
9613955d011SMarcel Moolenaar     /*
9623955d011SMarcel Moolenaar      * We need to check if the target is out-of-date. This includes
9633955d011SMarcel Moolenaar      * checking if the expanded command has changed. This in turn
9643955d011SMarcel Moolenaar      * requires that all variables are set in the same way that they
9653955d011SMarcel Moolenaar      * would be if the target needs to be re-built.
9663955d011SMarcel Moolenaar      */
9673955d011SMarcel Moolenaar     Make_DoAllVar(gn);
9683955d011SMarcel Moolenaar 
969*b778b302SSimon J. Gerraty     meta_name(gn, fname, sizeof(fname), dname, tname, dname);
9703955d011SMarcel Moolenaar 
9713955d011SMarcel Moolenaar #ifdef DEBUG_META_MODE
9723955d011SMarcel Moolenaar     if (DEBUG(META))
9733955d011SMarcel Moolenaar 	fprintf(debug_file, "meta_oodate: %s\n", fname);
9743955d011SMarcel Moolenaar #endif
9753955d011SMarcel Moolenaar 
9763955d011SMarcel Moolenaar     if ((fp = fopen(fname, "r")) != NULL) {
9773955d011SMarcel Moolenaar 	static char *buf = NULL;
9783955d011SMarcel Moolenaar 	static size_t bufsz;
9793955d011SMarcel Moolenaar 	int lineno = 0;
9803955d011SMarcel Moolenaar 	int lastpid = 0;
9813955d011SMarcel Moolenaar 	int pid;
9823955d011SMarcel Moolenaar 	int x;
9833955d011SMarcel Moolenaar 	LstNode ln;
9843955d011SMarcel Moolenaar 	struct stat fs;
9853955d011SMarcel Moolenaar 
9863955d011SMarcel Moolenaar 	if (!buf) {
9873955d011SMarcel Moolenaar 	    bufsz = 8 * BUFSIZ;
9883955d011SMarcel Moolenaar 	    buf = bmake_malloc(bufsz);
9893955d011SMarcel Moolenaar 	}
9903955d011SMarcel Moolenaar 
9913955d011SMarcel Moolenaar 	if (!cwdlen) {
9923955d011SMarcel Moolenaar 	    if (getcwd(cwd, sizeof(cwd)) == NULL)
9933955d011SMarcel Moolenaar 		err(1, "Could not get current working directory");
9943955d011SMarcel Moolenaar 	    cwdlen = strlen(cwd);
9953955d011SMarcel Moolenaar 	}
996db29cad8SSimon J. Gerraty 	strlcpy(lcwd, cwd, sizeof(lcwd));
997db29cad8SSimon J. Gerraty 	strlcpy(latestdir, cwd, sizeof(latestdir));
9983955d011SMarcel Moolenaar 
9993955d011SMarcel Moolenaar 	if (!tmpdir) {
10003955d011SMarcel Moolenaar 	    tmpdir = getTmpdir();
10013955d011SMarcel Moolenaar 	    tmplen = strlen(tmpdir);
10023955d011SMarcel Moolenaar 	}
10033955d011SMarcel Moolenaar 
10043955d011SMarcel Moolenaar 	/* we want to track all the .meta we read */
10053955d011SMarcel Moolenaar 	Var_Append(".MAKE.META.FILES", fname, VAR_GLOBAL);
10063955d011SMarcel Moolenaar 
10073955d011SMarcel Moolenaar 	ln = Lst_First(gn->commands);
10083955d011SMarcel Moolenaar 	while (!oodate && (x = fgetLine(&buf, &bufsz, 0, fp)) > 0) {
10093955d011SMarcel Moolenaar 	    lineno++;
10103955d011SMarcel Moolenaar 	    if (buf[x - 1] == '\n')
10113955d011SMarcel Moolenaar 		buf[x - 1] = '\0';
10123955d011SMarcel Moolenaar 	    else {
10133955d011SMarcel Moolenaar 		warnx("%s: %d: line truncated at %u", fname, lineno, x);
10143955d011SMarcel Moolenaar 		oodate = TRUE;
10153955d011SMarcel Moolenaar 		break;
10163955d011SMarcel Moolenaar 	    }
10170dede8b0SSimon J. Gerraty 	    link_src = NULL;
10180dede8b0SSimon J. Gerraty 	    move_target = NULL;
10193955d011SMarcel Moolenaar 	    /* Find the start of the build monitor section. */
1020*b778b302SSimon J. Gerraty 	    if (!have_filemon) {
10213955d011SMarcel Moolenaar 		if (strncmp(buf, "-- filemon", 10) == 0) {
1022*b778b302SSimon J. Gerraty 		    have_filemon = TRUE;
10233955d011SMarcel Moolenaar 		    continue;
10243955d011SMarcel Moolenaar 		}
10253955d011SMarcel Moolenaar 		if (strncmp(buf, "# buildmon", 10) == 0) {
1026*b778b302SSimon J. Gerraty 		    have_filemon = TRUE;
10273955d011SMarcel Moolenaar 		    continue;
10283955d011SMarcel Moolenaar 		}
10293955d011SMarcel Moolenaar 	    }
10303955d011SMarcel Moolenaar 
10313955d011SMarcel Moolenaar 	    /* Delimit the record type. */
10323955d011SMarcel Moolenaar 	    p = buf;
10333955d011SMarcel Moolenaar #ifdef DEBUG_META_MODE
10343955d011SMarcel Moolenaar 	    if (DEBUG(META))
10353955d011SMarcel Moolenaar 		fprintf(debug_file, "%s: %d: %s\n", fname, lineno, buf);
10363955d011SMarcel Moolenaar #endif
10373955d011SMarcel Moolenaar 	    strsep(&p, " ");
1038*b778b302SSimon J. Gerraty 	    if (have_filemon) {
10393955d011SMarcel Moolenaar 		/*
10403955d011SMarcel Moolenaar 		 * We are in the 'filemon' output section.
10413955d011SMarcel Moolenaar 		 * Each record from filemon follows the general form:
10423955d011SMarcel Moolenaar 		 *
10433955d011SMarcel Moolenaar 		 * <key> <pid> <data>
10443955d011SMarcel Moolenaar 		 *
10453955d011SMarcel Moolenaar 		 * Where:
10463955d011SMarcel Moolenaar 		 * <key> is a single letter, denoting the syscall.
10473955d011SMarcel Moolenaar 		 * <pid> is the process that made the syscall.
10483955d011SMarcel Moolenaar 		 * <data> is the arguments (of interest).
10493955d011SMarcel Moolenaar 		 */
10503955d011SMarcel Moolenaar 		switch(buf[0]) {
10513955d011SMarcel Moolenaar 		case '#':		/* comment */
10523955d011SMarcel Moolenaar 		case 'V':		/* version */
10533955d011SMarcel Moolenaar 		    break;
10543955d011SMarcel Moolenaar 		default:
10553955d011SMarcel Moolenaar 		    /*
10563955d011SMarcel Moolenaar 		     * We need to track pathnames per-process.
10573955d011SMarcel Moolenaar 		     *
10583955d011SMarcel Moolenaar 		     * Each process run by make, starts off in the 'CWD'
10593955d011SMarcel Moolenaar 		     * recorded in the .meta file, if it chdirs ('C')
10603955d011SMarcel Moolenaar 		     * elsewhere we need to track that - but only for
10613955d011SMarcel Moolenaar 		     * that process.  If it forks ('F'), we initialize
10623955d011SMarcel Moolenaar 		     * the child to have the same cwd as its parent.
10633955d011SMarcel Moolenaar 		     *
10643955d011SMarcel Moolenaar 		     * We also need to track the 'latestdir' of
10653955d011SMarcel Moolenaar 		     * interest.  This is usually the same as cwd, but
10663955d011SMarcel Moolenaar 		     * not if a process is reading directories.
10673955d011SMarcel Moolenaar 		     *
10683955d011SMarcel Moolenaar 		     * Each time we spot a different process ('pid')
10693955d011SMarcel Moolenaar 		     * we save the current value of 'latestdir' in a
10703955d011SMarcel Moolenaar 		     * variable qualified by 'lastpid', and
10713955d011SMarcel Moolenaar 		     * re-initialize 'latestdir' to any pre-saved
10723955d011SMarcel Moolenaar 		     * value for the current 'pid' and 'CWD' if none.
10733955d011SMarcel Moolenaar 		     */
10743955d011SMarcel Moolenaar 		    CHECK_VALID_META(p);
10753955d011SMarcel Moolenaar 		    pid = atoi(p);
10763955d011SMarcel Moolenaar 		    if (pid > 0 && pid != lastpid) {
10773955d011SMarcel Moolenaar 			char *ldir;
10783955d011SMarcel Moolenaar 			char *tp;
10793955d011SMarcel Moolenaar 
10803955d011SMarcel Moolenaar 			if (lastpid > 0) {
1081db29cad8SSimon J. Gerraty 			    /* We need to remember these. */
1082db29cad8SSimon J. Gerraty 			    Var_Set(lcwd_vname, lcwd, VAR_GLOBAL, 0);
10833955d011SMarcel Moolenaar 			    Var_Set(ldir_vname, latestdir, VAR_GLOBAL, 0);
10843955d011SMarcel Moolenaar 			}
1085db29cad8SSimon J. Gerraty 			snprintf(lcwd_vname, sizeof(lcwd_vname), LCWD_VNAME_FMT, pid);
10863955d011SMarcel Moolenaar 			snprintf(ldir_vname, sizeof(ldir_vname), LDIR_VNAME_FMT, pid);
10873955d011SMarcel Moolenaar 			lastpid = pid;
10883955d011SMarcel Moolenaar 			ldir = Var_Value(ldir_vname, VAR_GLOBAL, &tp);
10893955d011SMarcel Moolenaar 			if (ldir) {
10903955d011SMarcel Moolenaar 			    strlcpy(latestdir, ldir, sizeof(latestdir));
10913955d011SMarcel Moolenaar 			    free(tp);
1092db29cad8SSimon J. Gerraty 			}
1093db29cad8SSimon J. Gerraty 			ldir = Var_Value(lcwd_vname, VAR_GLOBAL, &tp);
1094db29cad8SSimon J. Gerraty 			if (ldir) {
1095db29cad8SSimon J. Gerraty 			    strlcpy(lcwd, ldir, sizeof(lcwd));
1096db29cad8SSimon J. Gerraty 			    free(tp);
1097db29cad8SSimon J. Gerraty 			}
10983955d011SMarcel Moolenaar 		    }
10993955d011SMarcel Moolenaar 		    /* Skip past the pid. */
11003955d011SMarcel Moolenaar 		    if (strsep(&p, " ") == NULL)
11013955d011SMarcel Moolenaar 			continue;
11023955d011SMarcel Moolenaar #ifdef DEBUG_META_MODE
11033955d011SMarcel Moolenaar 		    if (DEBUG(META))
1104db29cad8SSimon J. Gerraty 			    fprintf(debug_file, "%s: %d: %d: %c: cwd=%s lcwd=%s ldir=%s\n",
1105db29cad8SSimon J. Gerraty 				    fname, lineno,
1106db29cad8SSimon J. Gerraty 				    pid, buf[0], cwd, lcwd, latestdir);
11073955d011SMarcel Moolenaar #endif
11083955d011SMarcel Moolenaar 		    break;
11093955d011SMarcel Moolenaar 		}
11103955d011SMarcel Moolenaar 
11113955d011SMarcel Moolenaar 		CHECK_VALID_META(p);
11123955d011SMarcel Moolenaar 
11133955d011SMarcel Moolenaar 		/* Process according to record type. */
11143955d011SMarcel Moolenaar 		switch (buf[0]) {
11153955d011SMarcel Moolenaar 		case 'X':		/* eXit */
1116db29cad8SSimon J. Gerraty 		    Var_Delete(lcwd_vname, VAR_GLOBAL);
11173955d011SMarcel Moolenaar 		    Var_Delete(ldir_vname, VAR_GLOBAL);
11183955d011SMarcel Moolenaar 		    lastpid = 0;	/* no need to save ldir_vname */
11193955d011SMarcel Moolenaar 		    break;
11203955d011SMarcel Moolenaar 
11213955d011SMarcel Moolenaar 		case 'F':		/* [v]Fork */
11223955d011SMarcel Moolenaar 		    {
11233955d011SMarcel Moolenaar 			char cldir[64];
11243955d011SMarcel Moolenaar 			int child;
11253955d011SMarcel Moolenaar 
11263955d011SMarcel Moolenaar 			child = atoi(p);
11273955d011SMarcel Moolenaar 			if (child > 0) {
1128db29cad8SSimon J. Gerraty 			    snprintf(cldir, sizeof(cldir), LCWD_VNAME_FMT, child);
1129db29cad8SSimon J. Gerraty 			    Var_Set(cldir, lcwd, VAR_GLOBAL, 0);
11303955d011SMarcel Moolenaar 			    snprintf(cldir, sizeof(cldir), LDIR_VNAME_FMT, child);
11313955d011SMarcel Moolenaar 			    Var_Set(cldir, latestdir, VAR_GLOBAL, 0);
1132db29cad8SSimon J. Gerraty #ifdef DEBUG_META_MODE
1133db29cad8SSimon J. Gerraty 			    if (DEBUG(META))
1134db29cad8SSimon J. Gerraty 				    fprintf(debug_file, "%s: %d: %d: cwd=%s lcwd=%s ldir=%s\n",
1135db29cad8SSimon J. Gerraty 					    fname, lineno,
1136db29cad8SSimon J. Gerraty 					    child, cwd, lcwd, latestdir);
1137db29cad8SSimon J. Gerraty #endif
11383955d011SMarcel Moolenaar 			}
11393955d011SMarcel Moolenaar 		    }
11403955d011SMarcel Moolenaar 		    break;
11413955d011SMarcel Moolenaar 
11423955d011SMarcel Moolenaar 		case 'C':		/* Chdir */
1143db29cad8SSimon J. Gerraty 		    /* Update lcwd and latest directory. */
11443955d011SMarcel Moolenaar 		    strlcpy(latestdir, p, sizeof(latestdir));
1145db29cad8SSimon J. Gerraty 		    strlcpy(lcwd, p, sizeof(lcwd));
1146db29cad8SSimon J. Gerraty 		    Var_Set(lcwd_vname, lcwd, VAR_GLOBAL, 0);
1147db29cad8SSimon J. Gerraty 		    Var_Set(ldir_vname, lcwd, VAR_GLOBAL, 0);
1148db29cad8SSimon J. Gerraty #ifdef DEBUG_META_MODE
1149db29cad8SSimon J. Gerraty 		    if (DEBUG(META))
1150db29cad8SSimon J. Gerraty 			fprintf(debug_file, "%s: %d: cwd=%s ldir=%s\n", fname, lineno, cwd, lcwd);
1151db29cad8SSimon J. Gerraty #endif
11523955d011SMarcel Moolenaar 		    break;
11533955d011SMarcel Moolenaar 
11543955d011SMarcel Moolenaar 		case 'M':		/* renaMe */
11550dede8b0SSimon J. Gerraty 		    /*
11560dede8b0SSimon J. Gerraty 		     * For 'M'oves we want to check
11570dede8b0SSimon J. Gerraty 		     * the src as for 'R'ead
11580dede8b0SSimon J. Gerraty 		     * and the target as for 'W'rite.
11590dede8b0SSimon J. Gerraty 		     */
11600dede8b0SSimon J. Gerraty 		    cp = p;		/* save this for a second */
11610dede8b0SSimon J. Gerraty 		    /* now get target */
11620dede8b0SSimon J. Gerraty 		    if (strsep(&p, " ") == NULL)
11630dede8b0SSimon J. Gerraty 			continue;
11640dede8b0SSimon J. Gerraty 		    CHECK_VALID_META(p);
11650dede8b0SSimon J. Gerraty 		    move_target = p;
11660dede8b0SSimon J. Gerraty 		    p = cp;
11673955d011SMarcel Moolenaar 		    /* 'L' and 'M' put single quotes around the args */
11680dede8b0SSimon J. Gerraty 		    DEQUOTE(p);
11690dede8b0SSimon J. Gerraty 		    DEQUOTE(move_target);
11703955d011SMarcel Moolenaar 		    /* FALLTHROUGH */
11713955d011SMarcel Moolenaar 		case 'D':		/* unlink */
11723955d011SMarcel Moolenaar 		    if (*p == '/' && !Lst_IsEmpty(missingFiles)) {
11733955d011SMarcel Moolenaar 			/* remove p from the missingFiles list if present */
11743955d011SMarcel Moolenaar 			if ((ln = Lst_Find(missingFiles, p, string_match)) != NULL) {
11753955d011SMarcel Moolenaar 			    char *tp = Lst_Datum(ln);
11763955d011SMarcel Moolenaar 			    Lst_Remove(missingFiles, ln);
11773955d011SMarcel Moolenaar 			    free(tp);
11781748de26SSimon J. Gerraty 			    ln = NULL;	/* we're done with it */
11793955d011SMarcel Moolenaar 			}
11803955d011SMarcel Moolenaar 		    }
11810dede8b0SSimon J. Gerraty 		    if (buf[0] == 'M') {
11820dede8b0SSimon J. Gerraty 			/* the target of the mv is a file 'W'ritten */
11830dede8b0SSimon J. Gerraty #ifdef DEBUG_META_MODE
11840dede8b0SSimon J. Gerraty 			if (DEBUG(META))
11850dede8b0SSimon J. Gerraty 			    fprintf(debug_file, "meta_oodate: M %s -> %s\n",
11860dede8b0SSimon J. Gerraty 				    p, move_target);
11870dede8b0SSimon J. Gerraty #endif
11880dede8b0SSimon J. Gerraty 			p = move_target;
11890dede8b0SSimon J. Gerraty 			goto check_write;
11900dede8b0SSimon J. Gerraty 		    }
11913955d011SMarcel Moolenaar 		    break;
11923955d011SMarcel Moolenaar 		case 'L':		/* Link */
11930dede8b0SSimon J. Gerraty 		    /*
11940dede8b0SSimon J. Gerraty 		     * For 'L'inks check
11950dede8b0SSimon J. Gerraty 		     * the src as for 'R'ead
11960dede8b0SSimon J. Gerraty 		     * and the target as for 'W'rite.
11970dede8b0SSimon J. Gerraty 		     */
11980dede8b0SSimon J. Gerraty 		    link_src = p;
11990dede8b0SSimon J. Gerraty 		    /* now get target */
12003955d011SMarcel Moolenaar 		    if (strsep(&p, " ") == NULL)
12013955d011SMarcel Moolenaar 			continue;
12023955d011SMarcel Moolenaar 		    CHECK_VALID_META(p);
12033955d011SMarcel Moolenaar 		    /* 'L' and 'M' put single quotes around the args */
12040dede8b0SSimon J. Gerraty 		    DEQUOTE(p);
12050dede8b0SSimon J. Gerraty 		    DEQUOTE(link_src);
12060dede8b0SSimon J. Gerraty #ifdef DEBUG_META_MODE
12070dede8b0SSimon J. Gerraty 		    if (DEBUG(META))
12080dede8b0SSimon J. Gerraty 			fprintf(debug_file, "meta_oodate: L %s -> %s\n",
12090dede8b0SSimon J. Gerraty 				link_src, p);
12100dede8b0SSimon J. Gerraty #endif
12113955d011SMarcel Moolenaar 		    /* FALLTHROUGH */
12123955d011SMarcel Moolenaar 		case 'W':		/* Write */
12130dede8b0SSimon J. Gerraty 		check_write:
12143955d011SMarcel Moolenaar 		    /*
12153955d011SMarcel Moolenaar 		     * If a file we generated within our bailiwick
12163955d011SMarcel Moolenaar 		     * but outside of .OBJDIR is missing,
12173955d011SMarcel Moolenaar 		     * we need to do it again.
12183955d011SMarcel Moolenaar 		     */
12193955d011SMarcel Moolenaar 		    /* ignore non-absolute paths */
12203955d011SMarcel Moolenaar 		    if (*p != '/')
12213955d011SMarcel Moolenaar 			break;
12223955d011SMarcel Moolenaar 
12233955d011SMarcel Moolenaar 		    if (Lst_IsEmpty(metaBailiwick))
12243955d011SMarcel Moolenaar 			break;
12253955d011SMarcel Moolenaar 
12263955d011SMarcel Moolenaar 		    /* ignore cwd - normal dependencies handle those */
12273955d011SMarcel Moolenaar 		    if (strncmp(p, cwd, cwdlen) == 0)
12283955d011SMarcel Moolenaar 			break;
12293955d011SMarcel Moolenaar 
12303955d011SMarcel Moolenaar 		    if (!Lst_ForEach(metaBailiwick, prefix_match, p))
12313955d011SMarcel Moolenaar 			break;
12323955d011SMarcel Moolenaar 
12333955d011SMarcel Moolenaar 		    /* tmpdir might be within */
12343955d011SMarcel Moolenaar 		    if (tmplen > 0 && strncmp(p, tmpdir, tmplen) == 0)
12353955d011SMarcel Moolenaar 			break;
12363955d011SMarcel Moolenaar 
12373955d011SMarcel Moolenaar 		    /* ignore anything containing the string "tmp" */
12383955d011SMarcel Moolenaar 		    if ((strstr("tmp", p)))
12393955d011SMarcel Moolenaar 			break;
12403955d011SMarcel Moolenaar 
1241ac3446e9SSimon J. Gerraty 		    if ((link_src != NULL && lstat(p, &fs) < 0) ||
1242ac3446e9SSimon J. Gerraty 			(link_src == NULL && stat(p, &fs) < 0)) {
12433bebe729SSimon J. Gerraty 			if (Lst_Find(missingFiles, p, string_match) == NULL)
12443955d011SMarcel Moolenaar 				Lst_AtEnd(missingFiles, bmake_strdup(p));
12453955d011SMarcel Moolenaar 		    }
12463955d011SMarcel Moolenaar 		    break;
12470dede8b0SSimon J. Gerraty 		check_link_src:
12480dede8b0SSimon J. Gerraty 		    p = link_src;
12490dede8b0SSimon J. Gerraty 		    link_src = NULL;
12500dede8b0SSimon J. Gerraty #ifdef DEBUG_META_MODE
12510dede8b0SSimon J. Gerraty 		    if (DEBUG(META))
12520dede8b0SSimon J. Gerraty 			fprintf(debug_file, "meta_oodate: L src %s\n", p);
12530dede8b0SSimon J. Gerraty #endif
12540dede8b0SSimon J. Gerraty 		    /* FALLTHROUGH */
12553955d011SMarcel Moolenaar 		case 'R':		/* Read */
12563955d011SMarcel Moolenaar 		case 'E':		/* Exec */
12573955d011SMarcel Moolenaar 		    /*
12583955d011SMarcel Moolenaar 		     * Check for runtime files that can't
12593955d011SMarcel Moolenaar 		     * be part of the dependencies because
12603955d011SMarcel Moolenaar 		     * they are _expected_ to change.
12613955d011SMarcel Moolenaar 		     */
1262e48f47ddSSimon J. Gerraty 		    if (*p == '/') {
1263*b778b302SSimon J. Gerraty 			cached_realpath(p, fname1); /* clean it up */
1264e48f47ddSSimon J. Gerraty 			if (Lst_ForEach(metaIgnorePaths, prefix_match, fname1)) {
126551ee2c1cSSimon J. Gerraty #ifdef DEBUG_META_MODE
126651ee2c1cSSimon J. Gerraty 			    if (DEBUG(META))
1267e48f47ddSSimon J. Gerraty 				fprintf(debug_file, "meta_oodate: ignoring path: %s\n",
126851ee2c1cSSimon J. Gerraty 					p);
126951ee2c1cSSimon J. Gerraty #endif
12703955d011SMarcel Moolenaar 			    break;
127151ee2c1cSSimon J. Gerraty 			}
1272e48f47ddSSimon J. Gerraty 		    }
1273e48f47ddSSimon J. Gerraty 
1274e48f47ddSSimon J. Gerraty 		    if (metaIgnorePatterns) {
1275e48f47ddSSimon J. Gerraty 			char *pm;
1276e48f47ddSSimon J. Gerraty 
1277e48f47ddSSimon J. Gerraty 			snprintf(fname1, sizeof(fname1),
1278e48f47ddSSimon J. Gerraty 				 "${%s:@m@${%s:L:M$m}@}",
1279e48f47ddSSimon J. Gerraty 				 MAKE_META_IGNORE_PATTERNS, p);
1280e48f47ddSSimon J. Gerraty 			pm = Var_Subst(NULL, fname1, gn, VARF_WANTRES);
1281e48f47ddSSimon J. Gerraty 			if (*pm) {
1282e48f47ddSSimon J. Gerraty #ifdef DEBUG_META_MODE
1283e48f47ddSSimon J. Gerraty 			    if (DEBUG(META))
1284e48f47ddSSimon J. Gerraty 				fprintf(debug_file, "meta_oodate: ignoring pattern: %s\n",
1285e48f47ddSSimon J. Gerraty 					p);
1286e48f47ddSSimon J. Gerraty #endif
1287e48f47ddSSimon J. Gerraty 			    free(pm);
1288e48f47ddSSimon J. Gerraty 			    break;
1289e48f47ddSSimon J. Gerraty 			}
1290e48f47ddSSimon J. Gerraty 			free(pm);
1291e48f47ddSSimon J. Gerraty 		    }
12923955d011SMarcel Moolenaar 
12933955d011SMarcel Moolenaar 		    /*
12943955d011SMarcel Moolenaar 		     * The rest of the record is the file name.
12953955d011SMarcel Moolenaar 		     * Check if it's not an absolute path.
12963955d011SMarcel Moolenaar 		     */
12973955d011SMarcel Moolenaar 		    {
12983955d011SMarcel Moolenaar 			char *sdirs[4];
12993955d011SMarcel Moolenaar 			char **sdp;
13003955d011SMarcel Moolenaar 			int sdx = 0;
13013955d011SMarcel Moolenaar 			int found = 0;
13023955d011SMarcel Moolenaar 
13033955d011SMarcel Moolenaar 			if (*p == '/') {
13043955d011SMarcel Moolenaar 			    sdirs[sdx++] = p; /* done */
13053955d011SMarcel Moolenaar 			} else {
13063955d011SMarcel Moolenaar 			    if (strcmp(".", p) == 0)
13073955d011SMarcel Moolenaar 				continue;  /* no point */
13083955d011SMarcel Moolenaar 
13093955d011SMarcel Moolenaar 			    /* Check vs latestdir */
13103955d011SMarcel Moolenaar 			    snprintf(fname1, sizeof(fname1), "%s/%s", latestdir, p);
13113955d011SMarcel Moolenaar 			    sdirs[sdx++] = fname1;
13123955d011SMarcel Moolenaar 
1313db29cad8SSimon J. Gerraty 			    if (strcmp(latestdir, lcwd) != 0) {
1314db29cad8SSimon J. Gerraty 				/* Check vs lcwd */
1315db29cad8SSimon J. Gerraty 				snprintf(fname2, sizeof(fname2), "%s/%s", lcwd, p);
13163955d011SMarcel Moolenaar 				sdirs[sdx++] = fname2;
13173955d011SMarcel Moolenaar 			    }
1318db29cad8SSimon J. Gerraty 			    if (strcmp(lcwd, cwd) != 0) {
1319db29cad8SSimon J. Gerraty 				/* Check vs cwd */
1320db29cad8SSimon J. Gerraty 				snprintf(fname3, sizeof(fname3), "%s/%s", cwd, p);
1321db29cad8SSimon J. Gerraty 				sdirs[sdx++] = fname3;
1322db29cad8SSimon J. Gerraty 			    }
13233955d011SMarcel Moolenaar 			}
13243955d011SMarcel Moolenaar 			sdirs[sdx++] = NULL;
13253955d011SMarcel Moolenaar 
13263955d011SMarcel Moolenaar 			for (sdp = sdirs; *sdp && !found; sdp++) {
13273955d011SMarcel Moolenaar #ifdef DEBUG_META_MODE
13283955d011SMarcel Moolenaar 			    if (DEBUG(META))
13293955d011SMarcel Moolenaar 				fprintf(debug_file, "%s: %d: looking for: %s\n", fname, lineno, *sdp);
13303955d011SMarcel Moolenaar #endif
13313955d011SMarcel Moolenaar 			    if (stat(*sdp, &fs) == 0) {
13323955d011SMarcel Moolenaar 				found = 1;
13333955d011SMarcel Moolenaar 				p = *sdp;
13343955d011SMarcel Moolenaar 			    }
13353955d011SMarcel Moolenaar 			}
13363955d011SMarcel Moolenaar 			if (found) {
13373955d011SMarcel Moolenaar #ifdef DEBUG_META_MODE
13383955d011SMarcel Moolenaar 			    if (DEBUG(META))
13393955d011SMarcel Moolenaar 				fprintf(debug_file, "%s: %d: found: %s\n", fname, lineno, p);
13403955d011SMarcel Moolenaar #endif
13413955d011SMarcel Moolenaar 			    if (!S_ISDIR(fs.st_mode) &&
13423955d011SMarcel Moolenaar 				fs.st_mtime > gn->mtime) {
13433955d011SMarcel Moolenaar 				if (DEBUG(META))
13443955d011SMarcel Moolenaar 				    fprintf(debug_file, "%s: %d: file '%s' is newer than the target...\n", fname, lineno, p);
13453955d011SMarcel Moolenaar 				oodate = TRUE;
13463955d011SMarcel Moolenaar 			    } else if (S_ISDIR(fs.st_mode)) {
13473955d011SMarcel Moolenaar 				/* Update the latest directory. */
1348*b778b302SSimon J. Gerraty 				cached_realpath(p, latestdir);
13493955d011SMarcel Moolenaar 			    }
13503955d011SMarcel Moolenaar 			} else if (errno == ENOENT && *p == '/' &&
13513955d011SMarcel Moolenaar 				   strncmp(p, cwd, cwdlen) != 0) {
13523955d011SMarcel Moolenaar 			    /*
13533955d011SMarcel Moolenaar 			     * A referenced file outside of CWD is missing.
13543955d011SMarcel Moolenaar 			     * We cannot catch every eventuality here...
13553955d011SMarcel Moolenaar 			     */
13563bebe729SSimon J. Gerraty 			    if (Lst_Find(missingFiles, p, string_match) == NULL)
13573bebe729SSimon J. Gerraty 				    Lst_AtEnd(missingFiles, bmake_strdup(p));
13583955d011SMarcel Moolenaar 			}
13593955d011SMarcel Moolenaar 		    }
1360db29cad8SSimon J. Gerraty 		    if (buf[0] == 'E') {
1361db29cad8SSimon J. Gerraty 			/* previous latestdir is no longer relevant */
1362db29cad8SSimon J. Gerraty 			strlcpy(latestdir, lcwd, sizeof(latestdir));
1363db29cad8SSimon J. Gerraty 		    }
13643955d011SMarcel Moolenaar 		    break;
13653955d011SMarcel Moolenaar 		default:
13663955d011SMarcel Moolenaar 		    break;
13673955d011SMarcel Moolenaar 		}
13680dede8b0SSimon J. Gerraty 		if (!oodate && buf[0] == 'L' && link_src != NULL)
13690dede8b0SSimon J. Gerraty 		    goto check_link_src;
13703955d011SMarcel Moolenaar 	    } else if (strcmp(buf, "CMD") == 0) {
13713955d011SMarcel Moolenaar 		/*
13723955d011SMarcel Moolenaar 		 * Compare the current command with the one in the
13733955d011SMarcel Moolenaar 		 * meta data file.
13743955d011SMarcel Moolenaar 		 */
13753955d011SMarcel Moolenaar 		if (ln == NULL) {
13763955d011SMarcel Moolenaar 		    if (DEBUG(META))
13773955d011SMarcel Moolenaar 			fprintf(debug_file, "%s: %d: there were more build commands in the meta data file than there are now...\n", fname, lineno);
13783955d011SMarcel Moolenaar 		    oodate = TRUE;
13793955d011SMarcel Moolenaar 		} else {
13803955d011SMarcel Moolenaar 		    char *cmd = (char *)Lst_Datum(ln);
13811748de26SSimon J. Gerraty 		    Boolean hasOODATE = FALSE;
13823955d011SMarcel Moolenaar 
13833955d011SMarcel Moolenaar 		    if (strstr(cmd, "$?"))
13841748de26SSimon J. Gerraty 			hasOODATE = TRUE;
13853955d011SMarcel Moolenaar 		    else if ((cp = strstr(cmd, ".OODATE"))) {
13861748de26SSimon J. Gerraty 			/* check for $[{(].OODATE[:)}] */
13873955d011SMarcel Moolenaar 			if (cp > cmd + 2 && cp[-2] == '$')
13881748de26SSimon J. Gerraty 			    hasOODATE = TRUE;
13893955d011SMarcel Moolenaar 		    }
13901748de26SSimon J. Gerraty 		    if (hasOODATE) {
13911748de26SSimon J. Gerraty 			needOODATE = TRUE;
13921748de26SSimon J. Gerraty 			if (DEBUG(META))
13931748de26SSimon J. Gerraty 			    fprintf(debug_file, "%s: %d: cannot compare command using .OODATE\n", fname, lineno);
13943955d011SMarcel Moolenaar 		    }
1395be19d90bSSimon J. Gerraty 		    cmd = Var_Subst(NULL, cmd, gn, VARF_WANTRES|VARF_UNDEFERR);
13963955d011SMarcel Moolenaar 
13973955d011SMarcel Moolenaar 		    if ((cp = strchr(cmd, '\n'))) {
13983955d011SMarcel Moolenaar 			int n;
13993955d011SMarcel Moolenaar 
14003955d011SMarcel Moolenaar 			/*
14013955d011SMarcel Moolenaar 			 * This command contains newlines, we need to
14023955d011SMarcel Moolenaar 			 * fetch more from the .meta file before we
14033955d011SMarcel Moolenaar 			 * attempt a comparison.
14043955d011SMarcel Moolenaar 			 */
14053955d011SMarcel Moolenaar 			/* first put the newline back at buf[x - 1] */
14063955d011SMarcel Moolenaar 			buf[x - 1] = '\n';
14073955d011SMarcel Moolenaar 			do {
14083955d011SMarcel Moolenaar 			    /* now fetch the next line */
14093955d011SMarcel Moolenaar 			    if ((n = fgetLine(&buf, &bufsz, x, fp)) <= 0)
14103955d011SMarcel Moolenaar 				break;
14113955d011SMarcel Moolenaar 			    x = n;
14123955d011SMarcel Moolenaar 			    lineno++;
14133955d011SMarcel Moolenaar 			    if (buf[x - 1] != '\n') {
14143955d011SMarcel Moolenaar 				warnx("%s: %d: line truncated at %u", fname, lineno, x);
14153955d011SMarcel Moolenaar 				break;
14163955d011SMarcel Moolenaar 			    }
14173955d011SMarcel Moolenaar 			    cp = strchr(++cp, '\n');
14183955d011SMarcel Moolenaar 			} while (cp);
14193955d011SMarcel Moolenaar 			if (buf[x - 1] == '\n')
14203955d011SMarcel Moolenaar 			    buf[x - 1] = '\0';
14213955d011SMarcel Moolenaar 		    }
14221748de26SSimon J. Gerraty 		    if (!hasOODATE &&
14233955d011SMarcel Moolenaar 			!(gn->type & OP_NOMETA_CMP) &&
14243955d011SMarcel Moolenaar 			strcmp(p, cmd) != 0) {
14253955d011SMarcel Moolenaar 			if (DEBUG(META))
14263955d011SMarcel Moolenaar 			    fprintf(debug_file, "%s: %d: a build command has changed\n%s\nvs\n%s\n", fname, lineno, p, cmd);
14273955d011SMarcel Moolenaar 			if (!metaIgnoreCMDs)
14283955d011SMarcel Moolenaar 			    oodate = TRUE;
14293955d011SMarcel Moolenaar 		    }
14303955d011SMarcel Moolenaar 		    free(cmd);
14313955d011SMarcel Moolenaar 		    ln = Lst_Succ(ln);
14323955d011SMarcel Moolenaar 		}
14333955d011SMarcel Moolenaar 	    } else if (strcmp(buf, "CWD") == 0) {
14343955d011SMarcel Moolenaar 		/*
14353955d011SMarcel Moolenaar 		 * Check if there are extra commands now
14363955d011SMarcel Moolenaar 		 * that weren't in the meta data file.
14373955d011SMarcel Moolenaar 		 */
14383955d011SMarcel Moolenaar 		if (!oodate && ln != NULL) {
14393955d011SMarcel Moolenaar 		    if (DEBUG(META))
14403955d011SMarcel Moolenaar 			fprintf(debug_file, "%s: %d: there are extra build commands now that weren't in the meta data file\n", fname, lineno);
14413955d011SMarcel Moolenaar 		    oodate = TRUE;
14423955d011SMarcel Moolenaar 		}
14433955d011SMarcel Moolenaar 		if (strcmp(p, cwd) != 0) {
14443955d011SMarcel Moolenaar 		    if (DEBUG(META))
14453955d011SMarcel Moolenaar 			fprintf(debug_file, "%s: %d: the current working directory has changed from '%s' to '%s'\n", fname, lineno, p, curdir);
14463955d011SMarcel Moolenaar 		    oodate = TRUE;
14473955d011SMarcel Moolenaar 		}
14483955d011SMarcel Moolenaar 	    }
14493955d011SMarcel Moolenaar 	}
14503955d011SMarcel Moolenaar 
14513955d011SMarcel Moolenaar 	fclose(fp);
14523955d011SMarcel Moolenaar 	if (!Lst_IsEmpty(missingFiles)) {
14533955d011SMarcel Moolenaar 	    if (DEBUG(META))
14543955d011SMarcel Moolenaar 		fprintf(debug_file, "%s: missing files: %s...\n",
14553955d011SMarcel Moolenaar 			fname, (char *)Lst_Datum(Lst_First(missingFiles)));
14563955d011SMarcel Moolenaar 	    oodate = TRUE;
14573955d011SMarcel Moolenaar 	}
1458*b778b302SSimon J. Gerraty 	if (!oodate && !have_filemon && filemonMissing) {
1459*b778b302SSimon J. Gerraty 	    if (DEBUG(META))
1460*b778b302SSimon J. Gerraty 		fprintf(debug_file, "%s: missing filemon data\n", fname);
1461*b778b302SSimon J. Gerraty 	    oodate = TRUE;
1462*b778b302SSimon J. Gerraty 	}
14633955d011SMarcel Moolenaar     } else {
1464*b778b302SSimon J. Gerraty 	if (writeMeta && metaMissing) {
1465*b778b302SSimon J. Gerraty 	    cp = NULL;
1466*b778b302SSimon J. Gerraty 
1467*b778b302SSimon J. Gerraty 	    /* if target is in .CURDIR we do not need a meta file */
1468*b778b302SSimon J. Gerraty 	    if (gn->path && (cp = strrchr(gn->path, '/')) && cp > gn->path) {
1469*b778b302SSimon J. Gerraty 		if (strncmp(curdir, gn->path, (cp - gn->path)) != 0) {
1470*b778b302SSimon J. Gerraty 		    cp = NULL;		/* not in .CURDIR */
1471*b778b302SSimon J. Gerraty 		}
1472*b778b302SSimon J. Gerraty 	    }
1473*b778b302SSimon J. Gerraty 	    if (!cp) {
14743955d011SMarcel Moolenaar 		if (DEBUG(META))
14753955d011SMarcel Moolenaar 		    fprintf(debug_file, "%s: required but missing\n", fname);
14763955d011SMarcel Moolenaar 		oodate = TRUE;
14773955d011SMarcel Moolenaar 	    }
14783955d011SMarcel Moolenaar 	}
1479*b778b302SSimon J. Gerraty     }
1480be19d90bSSimon J. Gerraty 
1481be19d90bSSimon J. Gerraty     Lst_Destroy(missingFiles, (FreeProc *)free);
1482be19d90bSSimon J. Gerraty 
14833cbdda60SSimon J. Gerraty     if (oodate && needOODATE) {
14843955d011SMarcel Moolenaar 	/*
14853cbdda60SSimon J. Gerraty 	 * Target uses .OODATE which is empty; or we wouldn't be here.
14863cbdda60SSimon J. Gerraty 	 * We have decided it is oodate, so .OODATE needs to be set.
14873cbdda60SSimon J. Gerraty 	 * All we can sanely do is set it to .ALLSRC.
14883955d011SMarcel Moolenaar 	 */
14893955d011SMarcel Moolenaar 	Var_Delete(OODATE, gn);
14903cbdda60SSimon J. Gerraty 	Var_Set(OODATE, Var_Value(ALLSRC, gn, &cp), gn, 0);
14913cbdda60SSimon J. Gerraty 	free(cp);
14923955d011SMarcel Moolenaar     }
1493*b778b302SSimon J. Gerraty 
1494*b778b302SSimon J. Gerraty  oodate_out:
1495*b778b302SSimon J. Gerraty     for (i--; i >= 0; i--) {
1496*b778b302SSimon J. Gerraty 	free(pa[i]);
1497*b778b302SSimon J. Gerraty     }
14983955d011SMarcel Moolenaar     return oodate;
14993955d011SMarcel Moolenaar }
15003955d011SMarcel Moolenaar 
15013955d011SMarcel Moolenaar /* support for compat mode */
15023955d011SMarcel Moolenaar 
15033955d011SMarcel Moolenaar static int childPipe[2];
15043955d011SMarcel Moolenaar 
15053955d011SMarcel Moolenaar void
15063955d011SMarcel Moolenaar meta_compat_start(void)
15073955d011SMarcel Moolenaar {
15083955d011SMarcel Moolenaar #ifdef USE_FILEMON_ONCE
15093955d011SMarcel Moolenaar     /*
15103955d011SMarcel Moolenaar      * We need to re-open filemon for each cmd.
15113955d011SMarcel Moolenaar      */
15123955d011SMarcel Moolenaar     BuildMon *pbm = &Mybm;
15133955d011SMarcel Moolenaar 
15143955d011SMarcel Moolenaar     if (pbm->mfp != NULL && useFilemon) {
15153955d011SMarcel Moolenaar 	filemon_open(pbm);
15163955d011SMarcel Moolenaar     } else {
15173955d011SMarcel Moolenaar 	pbm->mon_fd = pbm->filemon_fd = -1;
15183955d011SMarcel Moolenaar     }
15193955d011SMarcel Moolenaar #endif
15203955d011SMarcel Moolenaar     if (pipe(childPipe) < 0)
15213955d011SMarcel Moolenaar 	Punt("Cannot create pipe: %s", strerror(errno));
15223955d011SMarcel Moolenaar     /* Set close-on-exec flag for both */
1523be19d90bSSimon J. Gerraty     (void)fcntl(childPipe[0], F_SETFD, FD_CLOEXEC);
1524be19d90bSSimon J. Gerraty     (void)fcntl(childPipe[1], F_SETFD, FD_CLOEXEC);
15253955d011SMarcel Moolenaar }
15263955d011SMarcel Moolenaar 
15273955d011SMarcel Moolenaar void
15283955d011SMarcel Moolenaar meta_compat_child(void)
15293955d011SMarcel Moolenaar {
15303955d011SMarcel Moolenaar     meta_job_child(NULL);
15313955d011SMarcel Moolenaar     if (dup2(childPipe[1], 1) < 0 ||
15323955d011SMarcel Moolenaar 	dup2(1, 2) < 0) {
15333955d011SMarcel Moolenaar 	execError("dup2", "pipe");
15343955d011SMarcel Moolenaar 	_exit(1);
15353955d011SMarcel Moolenaar     }
15363955d011SMarcel Moolenaar }
15373955d011SMarcel Moolenaar 
15383955d011SMarcel Moolenaar void
15393955d011SMarcel Moolenaar meta_compat_parent(void)
15403955d011SMarcel Moolenaar {
15413955d011SMarcel Moolenaar     FILE *fp;
15423955d011SMarcel Moolenaar     char buf[BUFSIZ];
15433955d011SMarcel Moolenaar 
15443955d011SMarcel Moolenaar     close(childPipe[1]);			/* child side */
15453955d011SMarcel Moolenaar     fp = fdopen(childPipe[0], "r");
15463955d011SMarcel Moolenaar     while (fgets(buf, sizeof(buf), fp)) {
15473955d011SMarcel Moolenaar 	meta_job_output(NULL, buf, "");
15483955d011SMarcel Moolenaar 	printf("%s", buf);
15493955d011SMarcel Moolenaar     }
15503955d011SMarcel Moolenaar     fclose(fp);
15513955d011SMarcel Moolenaar }
15523955d011SMarcel Moolenaar 
15533955d011SMarcel Moolenaar #endif	/* USE_META */
1554