[src/trunk]: src/usr.bin/make Fix meta_compat mode.

[sjg <sjg%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/504453a71558
branches:  trunk
changeset: 744549:504453a71558
user:      sjg <sjg%NetBSD.org@localhost>
date:      Thu Feb 06 01:13:19 2020 +0000

description:
Fix meta_compat mode.

We need to call meta_job_output() from meta_compat_parent()
Also, the need for extra fds for meta mode only applies when
using filemon_ktrace.c.
Since we hope to see more interfaces like that, test for
USE_FILEMON_DEV being not defined.

Reviewed by: riastradh

diffstat:

 usr.bin/make/Makefile |   6 +++---
 usr.bin/make/job.c    |  16 ++++++++--------
 usr.bin/make/meta.c   |  19 +++++++++----------
 3 files changed, 20 insertions(+), 21 deletions(-)

diffs (169 lines):

diff -r 949c95e576fa -r 504453a71558 usr.bin/make/Makefile
--- a/usr.bin/make/Makefile     Thu Feb 06 00:32:07 2020 +0000
+++ b/usr.bin/make/Makefile     Thu Feb 06 01:13:19 2020 +0000
@@ -1,4 +1,4 @@
-#      $NetBSD: Makefile,v 1.68 2020/01/19 19:50:54 riastradh Exp $
+#      $NetBSD: Makefile,v 1.69 2020/02/06 01:13:19 sjg Exp $
 #      @(#)Makefile    5.2 (Berkeley) 12/28/90
 
 PROG=  make
@@ -24,7 +24,7 @@
 
 .PATH: ${.CURDIR}/filemon
 SRCS+= filemon_${USE_FILEMON}.c
-CPPFLAGS+= -DUSE_FILEMON
+CPPFLAGS+= -DUSE_FILEMON -DUSE_FILEMON_${USE_FILEMON:tu}
 
 .if ${USE_FILEMON} == "dev"
 FILEMON_H ?= /usr/include/dev/filemon/filemon.h
@@ -67,5 +67,5 @@
 COPTS.parse.c+=        ${GCC_NO_FORMAT_TRUNCATION}
 
 # A simple unit-test driver to help catch regressions
-accept test:
+accept test: .MAKE
        cd ${.CURDIR}/unit-tests && MAKEFLAGS= ${.MAKE} -r -m / TEST_MAKE=${TEST_MAKE:U${.OBJDIR}/${PROG:T}} ${.TARGET}
diff -r 949c95e576fa -r 504453a71558 usr.bin/make/job.c
--- a/usr.bin/make/job.c        Thu Feb 06 00:32:07 2020 +0000
+++ b/usr.bin/make/job.c        Thu Feb 06 01:13:19 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: job.c,v 1.196 2020/01/19 19:42:32 riastradh Exp $      */
+/*     $NetBSD: job.c,v 1.197 2020/02/06 01:13:19 sjg Exp $    */
 
 /*
  * Copyright (c) 1988, 1989, 1990 The Regents of the University of California.
@@ -70,14 +70,14 @@
  */
 
 #ifndef MAKE_NATIVE
-static char rcsid[] = "$NetBSD: job.c,v 1.196 2020/01/19 19:42:32 riastradh Exp $";
+static char rcsid[] = "$NetBSD: job.c,v 1.197 2020/02/06 01:13:19 sjg Exp $";
 #else
 #include <sys/cdefs.h>
 #ifndef lint
 #if 0
 static char sccsid[] = "@(#)job.c      8.2 (Berkeley) 3/19/94";
 #else
-__RCSID("$NetBSD: job.c,v 1.196 2020/01/19 19:42:32 riastradh Exp $");
+__RCSID("$NetBSD: job.c,v 1.197 2020/02/06 01:13:19 sjg Exp $");
 #endif
 #endif /* not lint */
 #endif
@@ -362,7 +362,7 @@
 static unsigned
 nfds_per_job(void)
 {
-#ifdef USE_META
+#if defined(USE_FILEMON) && !defined(USE_FILEMON_DEV)
     if (useMeta)
        return 2;
 #endif
@@ -2145,7 +2145,7 @@
        job = jobfds[i];
        if (job->job_state == JOB_ST_RUNNING)
            JobDoOutput(job, FALSE);
-#ifdef USE_META
+#if defined(USE_FILEMON) && !defined(USE_FILEMON_DEV)
        /*
         * With meta mode, we may have activity on the job's filemon
         * descriptor too, which at the moment is any pollfd other than
@@ -2824,7 +2824,7 @@
     jobfds[nfds] = job;
     job->inPollfd = &fds[nfds];
     nfds++;
-#ifdef USE_META
+#if defined(USE_FILEMON) && !defined(USE_FILEMON_DEV)
     if (useMeta) {
        fds[nfds].fd = meta_job_fd(job);
        fds[nfds].events = fds[nfds].fd == -1 ? 0 : POLLIN;
@@ -2842,7 +2842,7 @@
        Punt("Unwatching unwatched job");
     i = job->inPollfd - fds;
     nfds--;
-#ifdef USE_META
+#if defined(USE_FILEMON) && !defined(USE_FILEMON_DEV)
     if (useMeta) {
        /*
         * Sanity check: there should be two fds per job, so the job's
@@ -2861,7 +2861,7 @@
        fds[i] = fds[nfds];
        jobfds[i] = jobfds[nfds];
        jobfds[i]->inPollfd = &fds[i];
-#ifdef USE_META
+#if defined(USE_FILEMON) && !defined(USE_FILEMON_DEV)
        if (useMeta) {
            fds[i + 1] = fds[nfds + 1];
            jobfds[i + 1] = jobfds[nfds + 1];
diff -r 949c95e576fa -r 504453a71558 usr.bin/make/meta.c
--- a/usr.bin/make/meta.c       Thu Feb 06 00:32:07 2020 +0000
+++ b/usr.bin/make/meta.c       Thu Feb 06 01:13:19 2020 +0000
@@ -1,4 +1,4 @@
-/*      $NetBSD: meta.c,v 1.77 2020/01/22 21:04:29 sjg Exp $ */
+/*      $NetBSD: meta.c,v 1.78 2020/02/06 01:13:19 sjg Exp $ */
 
 /*
  * Implement 'meta' mode.
@@ -716,7 +716,7 @@
 void
 meta_job_parent(Job *job, pid_t pid)
 {
-#ifdef USE_FILEMON
+#if defined(USE_FILEMON) && !defined(USE_FILEMON_DEV)
     BuildMon *pbm;
 
     if (job != NULL) {
@@ -733,7 +733,7 @@
 int
 meta_job_fd(Job *job)
 {
-#ifdef USE_FILEMON
+#if defined(USE_FILEMON) && !defined(USE_FILEMON_DEV)
     BuildMon *pbm;
 
     if (job != NULL) {
@@ -751,7 +751,7 @@
 int
 meta_job_event(Job *job)
 {
-#ifdef USE_FILEMON
+#if defined(USE_FILEMON) && !defined(USE_FILEMON_DEV)
     BuildMon *pbm;
 
     if (job != NULL) {
@@ -1680,16 +1680,13 @@
 meta_compat_parent(pid_t child)
 {
     int outfd, metafd, maxfd, nfds;
-    char buf[BUFSIZ];
+    char buf[BUFSIZ+1];
     fd_set readfds;
 
     meta_job_parent(NULL, child);
     close(childPipe[1]);                       /* child side */
     outfd = childPipe[0];
-    if (!Mybm.filemon)                         /* no meta  */
-           return;
-    metafd = filemon_readfd(Mybm.filemon);
-
+    metafd = Mybm.filemon ? filemon_readfd(Mybm.filemon) : -1;
     maxfd = -1;
     if (outfd > maxfd)
            maxfd = outfd;
@@ -1713,7 +1710,7 @@
 
        if (outfd != -1 && FD_ISSET(outfd, &readfds)) do {
            /* XXX this is not line-buffered */
-           ssize_t nread = read(outfd, buf, sizeof buf);
+           ssize_t nread = read(outfd, buf, sizeof(buf) - 1);
            if (nread == -1)
                err(1, "read");
            if (nread == 0) {
@@ -1723,6 +1720,8 @@
            }
            fwrite(buf, 1, (size_t)nread, stdout);
            fflush(stdout);
+           buf[nread] = '\0';
+           meta_job_output(NULL, buf, "");
        } while (0);
        if (metafd != -1 && FD_ISSET(metafd, &readfds)) {
            if (meta_job_event(NULL) <= 0)