GitLab

This uses the undocumented pthread_chdir_np() to change the launching
thread's PWD for the duration of the posix_spawn() syscall. There is no
other way to change directories when using posix_spawn, other than an
exec trampoline.

Bug: 179923
Change-Id: Ic6ab10cd1cb5be2f008b434b3546c05f080ef9b1
Reviewed-on: https://chromium-review.googlesource.com/c/1311258Reviewed-by: Mark Mentovai <mark@chromium.org>
Commit-Queue: Robert Sesek <rsesek@chromium.org>
Cr-Commit-Position: refs/heads/master@{#604799}