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Simplify closing two fds at once in run-command.c

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I started hacking on a change to add stdout redirection support to
the run_command family, but found I was using a lot of close calls
on two pipes in an array (such as for pipe).  So I'm doing a tiny
bit of refactoring first to make the next set of changes clearer.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Shawn O. Pearce 2007-03-12 14:37:28 -04:00 committed by Junio C Hamano
parent 1358e7d670
commit 9dc09c7664
1 changed files with 9 additions and 6 deletions
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15
run-command.c
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@ -2,6 +2,12 @@
#include "run-command.h"
#include "exec_cmd.h"
static inline void close_pair(int fd[2])
{
close(fd[0]);
close(fd[1]);
}
int start_command(struct child_process *cmd)
{
int need_in = !cmd->no_stdin && cmd->in < 0;
@ -16,10 +22,8 @@ int start_command(struct child_process *cmd)
cmd->pid = fork();
if (cmd->pid < 0) {
if (need_in) {
close(fdin[0]);
close(fdin[1]);
}
if (need_in)
close_pair(fdin);
return -ERR_RUN_COMMAND_FORK;
}
@ -30,8 +34,7 @@ int start_command(struct child_process *cmd)
close(fd);
} else if (need_in) {
dup2(fdin[0], 0);
close(fdin[0]);
close(fdin[1]);
close_pair(fdin);
} else if (cmd->in) {
dup2(cmd->in, 0);
close(cmd->in);