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610d18f412
As requested by Michael, add a missing check for valid flags in timerfd_settime(), and make it return EINVAL in case some extra bits are set. Michael said: If this is to be any use to userland apps that want to check flag support (perhaps it is too late already), then the sooner we get it into the kernel the better: 2.6.29 would be good; earlier stables as well would be even better. [akpm@linux-foundation.org: remove unused TFD_FLAGS_SET] Acked-by: Michael Kerrisk <mtk.manpages@gmail.com> Signed-off-by: Davide Libenzi <davidel@xmailserver.org> Cc: <stable@kernel.org> [2.6.27.x, 2.6.28.x] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
32 lines
837 B
C
32 lines
837 B
C
/*
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* include/linux/timerfd.h
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*
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* Copyright (C) 2007 Davide Libenzi <davidel@xmailserver.org>
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*
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*/
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#ifndef _LINUX_TIMERFD_H
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#define _LINUX_TIMERFD_H
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/* For O_CLOEXEC and O_NONBLOCK */
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#include <linux/fcntl.h>
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/*
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* CAREFUL: Check include/asm-generic/fcntl.h when defining
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* new flags, since they might collide with O_* ones. We want
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* to re-use O_* flags that couldn't possibly have a meaning
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* from eventfd, in order to leave a free define-space for
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* shared O_* flags.
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*/
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#define TFD_TIMER_ABSTIME (1 << 0)
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#define TFD_CLOEXEC O_CLOEXEC
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#define TFD_NONBLOCK O_NONBLOCK
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#define TFD_SHARED_FCNTL_FLAGS (TFD_CLOEXEC | TFD_NONBLOCK)
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/* Flags for timerfd_create. */
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#define TFD_CREATE_FLAGS TFD_SHARED_FCNTL_FLAGS
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/* Flags for timerfd_settime. */
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#define TFD_SETTIME_FLAGS TFD_TIMER_ABSTIME
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#endif /* _LINUX_TIMERFD_H */
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