Add open action to spawn file actions object (advanced realtime)
Usage
#include <spawn.h>
int posix_spawn_file_actions_addopen(posix_spawn_file_actions_t *restrict file_actions, int fildes, const char *restrict path, int oflag, mode_t mode);
Prolog
This manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ (consult the corresponding Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.