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start_command(), .in/.out/.err = -1: Callers must close the file descriptor

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By setting .in, .out, or .err members of struct child_process to -1, the
callers of start_command() can request that a pipe is allocated that talks
to the child process and one end is returned by replacing -1 with the
file descriptor.

Previously, a flag was set (for .in and .out, but not .err) to signal
finish_command() to close the pipe end that start_command() had handed out,
so it was optional for callers to close the pipe, and many already do so.
Now we make it mandatory to close the pipe.

Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Johannes Sixt
2008-02-16 18:36:38 +01:00
committed by Junio C Hamano
parent 923d44aeb7
commit e72ae28895
8 changed files with 9 additions and 11 deletions
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2
run-command.h
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@ -19,8 +19,6 @@ struct child_process {
int err;
const char *dir;
const char *const *env;
unsigned close_in:1;
unsigned close_out:1;
unsigned no_stdin:1;
unsigned no_stdout:1;
unsigned no_stderr:1;