Pirmin Walthert 6b2d945174 app.c: make sure that no non-async-signal-safe syscalls are used after ...

fork before exec

Posix does only allow async-signal-safe syscalls after fork before exec.
As asterisk ignores this, functions like TrySystem or System sometimes
end up in a deadlocked child process. The patch prevents the use of
non-async-signal-safe syscalls.

ASTERISK-28776

Change-Id: Idc76365c0592ee3f3b3bd72a4f48f7a098978e8e

2020-05-08 13:44:08 -05:00

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