CVSROOT: /cvs
Module name: src
Changes by: clau...@cvs.openbsd.org 2024/10/17 03:11:35
Modified files:
sys/kern : kern_sig.c kern_synch.c
sys/sys : signalvar.h
sys/ufs/mfs : mfs_vfsops.c
Log message:
Shortcut cursig when called during sleep setup.
Add deep flag as function argument which is used by the sleep API but
nowhere else. Both calls to sleep_signal_check() should skip the ugly
bits of cursig().
In cursig() if deep once it is clear a signal will be taken keep the
signal on the thread siglist and return. sleep_signal_check() will then
return EINTR or ERESTART based on the signal context. There is no reason
to do more in this special case. Especially stop/cont and the ptrace trap
must be skipped here. Once the call makes it to userret the signal will be
picked up again and handled in a safe location.
Stopping singals need some additional logic since we don't want to abort
the sleep just to stop a process. Since our SIGSTOP handling requires
a major rewrite this will be posponed until then.
OK mpi@
