Hmmm, from <https://www.man7.org/linux/man-pages/man3/posix_spawn.3.html https://www.man7.org/linux/man-pages/man3/posix_spawn.3.html>: The posix_spawn() a

Hmmm, from <https://www.man7.org/linux/man-pages/man3/posix_spawn.3.html https://www.man7.org/linux/man-pages/man3/posix_spawn.3.html>: The posix_spawn() and posix_spawnp() functions provide the functionality of a combined fork(2) and exec(3), with some optional housekeeping steps in the child process before the exec(3). These functions are not meant to replace the fork(2) and execve(2) system calls. In fact, they provide only a subset of the functionality that can be achieved by using the system calls. Also, there's no way to set resource limits in the child process, nor switch user or group ID, using posix_spawn().