proper error handling for fcntl F_GETOWN on modern kernels
authorRich Felker <dalias@aerifal.cx>
Thu, 21 Jun 2012 02:16:47 +0000 (22:16 -0400)
committerRich Felker <dalias@aerifal.cx>
Thu, 21 Jun 2012 02:16:47 +0000 (22:16 -0400)
commit4e8b0938d90793d6e1e200d6b25e6581b72bd4d0
treecb0255413023716592eebc9f7978d7c1a1b00179
parente5fb6820a42a1f675ba09c15273953e1ace65777
proper error handling for fcntl F_GETOWN on modern kernels

on old kernels, there's no way to detect errors; we must assume
negative syscall return values are pgrp ids. but if the F_GETOWN_EX
fcntl works, we can get a reliable answer.
arch/arm/bits/fcntl.h
arch/i386/bits/fcntl.h
arch/x86_64/bits/fcntl.h
include/fcntl.h
src/fcntl/fcntl.c