631aef280d
in ape close(), do the real filedescriptor _CLOSE() *after* we cleared the _fdinfo[] slot because once closed, we dont own the slot anymore and another process doing open() can trash the slot. make sure open() retuns fd < OPEN_MAX. double check in _startbuf() holding mux->lock if the fd is already buffered preveting running double copyprocs on a fd. dont zero the mux->rwant/ewant bitmaps at the end of select() as we do not hold the mix->lock. in _closebuf() kill copyproc while holding the mux->lock to make sure the copyproc isnt holding it at the time it is killed. run kill() multiple times to make sure the proc is gone. |
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