Re: CVS commit: src/lib/libc/sys

[Joerg Sonnenberger <joerg%bec.de@localhost>]

On Wed, Jun 09, 2021 at 01:03:20AM +0700, Robert Elz wrote:
> It should, when it is workable for the application, make things
> faster, while also avoiding the vfork() perils.   But only when
> it works -- after a vfork() the child can do anything (it should
> avoid touching its parent's state, but it can) posix_spawn() isn't
> nearly that general, it just handles the most common things apps
> are likely to want to do between the fork() and exec().

This is not true. After vfork(), it is only supposed to call async
signal safe functions. That said, a flag for the double fork semantic
might be useful.

Joerg