diff options
Diffstat (limited to 'run-command.c')
| -rw-r--r-- | run-command.c | 28 |
1 files changed, 20 insertions, 8 deletions
diff --git a/run-command.c b/run-command.c index 476d00c..743757c 100644 --- a/run-command.c +++ b/run-command.c @@ -20,12 +20,19 @@ int start_command(struct child_process *cmd) int need_in, need_out, need_err; int fdin[2], fdout[2], fderr[2]; + /* + * In case of errors we must keep the promise to close FDs + * that have been passed in via ->in and ->out. + */ + need_in = !cmd->no_stdin && cmd->in < 0; if (need_in) { - if (pipe(fdin) < 0) + if (pipe(fdin) < 0) { + if (cmd->out > 0) + close(cmd->out); return -ERR_RUN_COMMAND_PIPE; + } cmd->in = fdin[1]; - cmd->close_in = 1; } need_out = !cmd->no_stdout @@ -35,10 +42,11 @@ int start_command(struct child_process *cmd) if (pipe(fdout) < 0) { if (need_in) close_pair(fdin); + else if (cmd->in) + close(cmd->in); return -ERR_RUN_COMMAND_PIPE; } cmd->out = fdout[0]; - cmd->close_out = 1; } need_err = !cmd->no_stderr && cmd->err < 0; @@ -46,8 +54,12 @@ int start_command(struct child_process *cmd) if (pipe(fderr) < 0) { if (need_in) close_pair(fdin); + else if (cmd->in) + close(cmd->in); if (need_out) close_pair(fdout); + else if (cmd->out) + close(cmd->out); return -ERR_RUN_COMMAND_PIPE; } cmd->err = fderr[0]; @@ -57,8 +69,12 @@ int start_command(struct child_process *cmd) if (cmd->pid < 0) { if (need_in) close_pair(fdin); + else if (cmd->in) + close(cmd->in); if (need_out) close_pair(fdout); + else if (cmd->out) + close(cmd->out); if (need_err) close_pair(fderr); return -ERR_RUN_COMMAND_FORK; @@ -120,7 +136,7 @@ int start_command(struct child_process *cmd) if (need_out) close(fdout[1]); - else if (cmd->out > 1) + else if (cmd->out) close(cmd->out); if (need_err) @@ -157,10 +173,6 @@ static int wait_or_whine(pid_t pid) int finish_command(struct child_process *cmd) { - if (cmd->close_in) - close(cmd->in); - if (cmd->close_out) - close(cmd->out); return wait_or_whine(cmd->pid); } |