make: replace magic numbers with POSIX FILENO constants

No binary change.
This commit is contained in:
rillig 2024-05-25 21:34:38 +00:00
parent e67daf6e75
commit f80730c1d3
2 changed files with 12 additions and 11 deletions

View File

@ -1,4 +1,4 @@
/* $NetBSD: job.c,v 1.473 2024/05/25 21:07:48 rillig Exp $ */
/* $NetBSD: job.c,v 1.474 2024/05/25 21:34:38 rillig Exp $ */
/*
* Copyright (c) 1988, 1989, 1990 The Regents of the University of California.
@ -141,7 +141,7 @@
#include "trace.h"
/* "@(#)job.c 8.2 (Berkeley) 3/19/94" */
MAKE_RCSID("$NetBSD: job.c,v 1.473 2024/05/25 21:07:48 rillig Exp $");
MAKE_RCSID("$NetBSD: job.c,v 1.474 2024/05/25 21:34:38 rillig Exp $");
/*
* A shell defines how the commands are run. All commands for a target are
@ -1456,11 +1456,11 @@ JobExec(Job *job, char **argv)
* was marked close-on-exec, we must clear that bit in the
* new input.
*/
if (dup2(fileno(job->cmdFILE), 0) == -1)
if (dup2(fileno(job->cmdFILE), STDIN_FILENO) == -1)
execDie("dup2", "job->cmdFILE");
if (fcntl(0, F_SETFD, 0) == -1)
if (fcntl(STDIN_FILENO, F_SETFD, 0) == -1)
execDie("fcntl clear close-on-exec", "stdin");
if (lseek(0, 0, SEEK_SET) == -1)
if (lseek(STDIN_FILENO, 0, SEEK_SET) == -1)
execDie("lseek to 0", "stdin");
if (job->node->type & (OP_MAKE | OP_SUBMAKE)) {
@ -1477,18 +1477,18 @@ JobExec(Job *job, char **argv)
* Set up the child's output to be routed through the pipe
* we've created for it.
*/
if (dup2(job->outPipe, 1) == -1)
if (dup2(job->outPipe, STDOUT_FILENO) == -1)
execDie("dup2", "job->outPipe");
/*
* The output channels are marked close on exec. This bit
* was duplicated by the dup2(on some systems), so we have
* was duplicated by dup2 (on some systems), so we have
* to clear it before routing the shell's error output to
* the same place as its standard output.
*/
if (fcntl(1, F_SETFD, 0) == -1)
if (fcntl(STDOUT_FILENO, F_SETFD, 0) == -1)
execDie("clear close-on-exec", "stdout");
if (dup2(1, 2) == -1)
if (dup2(STDOUT_FILENO, STDERR_FILENO) == -1)
execDie("dup2", "1, 2");
/*

View File

@ -1,4 +1,4 @@
/* $NetBSD: meta.c,v 1.208 2024/04/27 17:33:46 rillig Exp $ */
/* $NetBSD: meta.c,v 1.209 2024/05/25 21:34:38 rillig Exp $ */
/*
* Implement 'meta' mode.
@ -1643,7 +1643,8 @@ void
meta_compat_child(void)
{
meta_job_child(NULL);
if (dup2(childPipe[1], 1) < 0 || dup2(1, 2) < 0)
if (dup2(childPipe[1], STDOUT_FILENO) < 0
|| dup2(STDOUT_FILENO, STDERR_FILENO) < 0)
execDie("dup2", "pipe");
}