diff options
| -rw-r--r-- | Documentation/technical/api-run-command.txt | 2 | ||||
| -rw-r--r-- | run-command.c | 8 | ||||
| -rw-r--r-- | run-command.h | 2 |
3 files changed, 10 insertions, 2 deletions
diff --git a/Documentation/technical/api-run-command.txt b/Documentation/technical/api-run-command.txt index b26c28133c..a1280dd837 100644 --- a/Documentation/technical/api-run-command.txt +++ b/Documentation/technical/api-run-command.txt @@ -135,7 +135,7 @@ stderr as follows: .in: The FD must be readable; it becomes child's stdin. .out: The FD must be writable; it becomes child's stdout. - .err > 0 is not supported. + .err: The FD must be writable; it becomes child's stderr. The specified FD is closed by start_command(), even if it fails to run the sub-process! diff --git a/run-command.c b/run-command.c index cf2d8f7fae..bfd231243d 100644 --- a/run-command.c +++ b/run-command.c @@ -94,6 +94,9 @@ fail_pipe: else if (need_err) { dup2(fderr[1], 2); close_pair(fderr); + } else if (cmd->err > 1) { + dup2(cmd->err, 2); + close(cmd->err); } if (cmd->no_stdout) @@ -156,6 +159,9 @@ fail_pipe: } else if (need_err) { s2 = dup(2); dup2(fderr[1], 2); + } else if (cmd->err > 2) { + s2 = dup(2); + dup2(cmd->err, 2); } if (cmd->no_stdout) { @@ -228,6 +234,8 @@ fail_pipe: if (need_err) close(fderr[1]); + else if (cmd->err) + close(cmd->err); return 0; } diff --git a/run-command.h b/run-command.h index fb342090e3..a29171adae 100644 --- a/run-command.h +++ b/run-command.h @@ -18,7 +18,7 @@ struct child_process { * - Specify > 0 to set a channel to a particular FD as follows: * .in: a readable FD, becomes child's stdin * .out: a writable FD, becomes child's stdout/stderr - * .err > 0 not supported + * .err: a writable FD, becomes child's stderr * The specified FD is closed by start_command(), even in case * of errors! */ |