diff options
| -rw-r--r-- | spawn.c | 12 |
1 files changed, 9 insertions, 3 deletions
@@ -147,9 +147,15 @@ static void bfs_spawn_exec(const char *exe, const struct bfs_spawn *ctx, char ** close(pipefd[0]); for (const struct bfs_spawn_action *action = actions; action; action = action->next) { - // Move the error-reporting pipe out of the way if necessary - if (action->in_fd == pipefd[1] || action->out_fd == pipefd[1]) { - int fd = dup(pipefd[1]); + // Pretend the error-reporting pipe doesn't exist + if (action->in_fd == pipefd[1]) { + errno = EBADF; + goto fail; + } + + // Move the pipe out of the way if necessary + if (action->out_fd == pipefd[1]) { + int fd = dup_cloexec(pipefd[1]); if (fd < 0) { goto fail; } |