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Due to bad decisions made decades ago at AT&T, on SVR4 OS'es the signal()
function resets the signal handler before calling the signal handler
(equivalent to sigaction flag SA_RESETHAND). This is why the X server
has a OsSignal() helper function in os/utils.c that uses the portable
POSIX sigaction function to provide BSD/Linux semantics in a signal()
style API, so we switch to use that in this test case, allowing it to
pass on Solaris.
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Keith Packard <keithp@keithp.com>
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sighandler_t is not UNIX.
Regression from: 7f09126e068015db54c56bb982b8f91065375700
Signed-off-by: Jeremy Huddleston Sequoia <jeremyhu@apple.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
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Calling OsReleaseSignal() inside the signal handler releases SIGIO, causing
the signal handler to be called again from within the handler.
Practical use-case: when synaptics calls TimerSet in the signal handler,
this causes the signals to be released, eventually hanging the server.
Regression introduced in 08962951de.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Jeremy Huddleston <jeremyhu@apple.com>
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Let the dix be in charge of changing the sigprocmask so we only have one
entity that changes it.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Keith Packard <keithp@keithp.com>
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