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Teach run_command how to setup a stdin pipe

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Sometimes callers trying to use run_command to execute a child
process will want to setup a pipe or file descriptor to redirect
into the child's stdin.

This idea is completely stolen from builtin-bundle's fork_with_pipe,
written by Johannes Schindelin.  All credit (and blame) should lie
with Dscho.  ;-)

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
2007-03-10 03:28:08 -05:00
committed by Junio C Hamano
parent ebcb5d16ca
commit 4919bf0354
2 changed files with 37 additions and 1 deletions
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3
run-command.h
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@ -4,6 +4,7 @@
enum {
ERR_RUN_COMMAND_FORK = 10000,
ERR_RUN_COMMAND_EXEC,
ERR_RUN_COMMAND_PIPE,
ERR_RUN_COMMAND_WAITPID,
ERR_RUN_COMMAND_WAITPID_WRONG_PID,
ERR_RUN_COMMAND_WAITPID_SIGNAL,
@ -13,6 +14,8 @@ enum {
struct child_process {
const char **argv;
pid_t pid;
int in;
unsigned close_in:1;
unsigned no_stdin:1;
unsigned git_cmd:1; /* if this is to be git sub-command */
unsigned stdout_to_stderr:1;