[uClibc] include linux-specific timerfd syscalls
This commit is contained in:
Bart Van Der Meerssche
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3cc10bde7d
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From cdeb75380c910f22b1c8d42defca5946fd594d75 Mon Sep 17 00:00:00 2001
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From: Stephan Raue <mailinglists@openelec.tv>
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Date: Tue, 22 Sep 2009 01:35:40 +0000
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Subject: add timerfd syscall and header
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Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
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Signed-off-by: Stephan Raue <mailinglists@openelec.tv>
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---
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diff --git a/libc/sysdeps/linux/common/Makefile.in b/libc/sysdeps/linux/common/Makefile.in
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index fbb5729..788571e 100644
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--- a/libc/sysdeps/linux/common/Makefile.in
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+++ b/libc/sysdeps/linux/common/Makefile.in
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@@ -31,7 +31,7 @@ CSRC := $(filter-out capget.c capset.c inotify.c ioperm.c iopl.c madvise.c \
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remap_file_pages.c sched_getaffinity.c sched_setaffinity.c \
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sendfile64.c sendfile.c setfsgid.c setfsuid.c setresuid.c \
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splice.c vmsplice.c tee.c signalfd.c swapoff.c swapon.c \
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- sync_file_range.c sysctl.c sysinfo.c uselib.c vhangup.c,$(CSRC))
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+ sync_file_range.c sysctl.c sysinfo.c timerfd.c uselib.c vhangup.c,$(CSRC))
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endif
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ifneq ($(UCLIBC_BSD_SPECIFIC),y)
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diff --git a/libc/sysdeps/linux/common/sys/timerfd.h b/libc/sysdeps/linux/common/sys/timerfd.h
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new file mode 100644
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index 0000000..c1bb06f
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--- a/dev/null
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+++ b/libc/sysdeps/linux/common/sys/timerfd.h
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@@ -0,0 +1,60 @@
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+/* Copyright (C) 2008 Free Software Foundation, Inc.
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+ This file is part of the GNU C Library.
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+
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+ The GNU C Library is free software; you can redistribute it and/or
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+ modify it under the terms of the GNU Lesser General Public
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+ License as published by the Free Software Foundation; either
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+ version 2.1 of the License, or (at your option) any later version.
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+
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+ The GNU C Library is distributed in the hope that it will be useful,
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+ but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ Lesser General Public License for more details.
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+
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+ You should have received a copy of the GNU Lesser General Public
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+ License along with the GNU C Library; if not, write to the Free
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+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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+ 02111-1307 USA. */
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+
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+#ifndef _SYS_TIMERFD_H
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+#define _SYS_TIMERFD_H 1
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+
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+#include <time.h>
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+
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+
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+/* Bits to be set in the FLAGS parameter of `timerfd_create'. */
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+enum
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+ {
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+ TFD_CLOEXEC = 02000000,
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+#define TFD_CLOEXEC TFD_CLOEXEC
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+ TFD_NONBLOCK = 04000
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+#define TFD_NONBLOCK TFD_NONBLOCK
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+ };
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+
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+
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+/* Bits to be set in the FLAGS parameter of `timerfd_settime'. */
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+enum
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+ {
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+ TFD_TIMER_ABSTIME = 1 << 0
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+#define TFD_TIMER_ABSTIME TFD_TIMER_ABSTIME
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+ };
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+
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+
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+__BEGIN_DECLS
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+
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+/* Return file descriptor for new interval timer source. */
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+extern int timerfd_create (clockid_t __clock_id, int __flags) __THROW;
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+
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+/* Set next expiration time of interval timer source UFD to UTMR. If
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+ FLAGS has the TFD_TIMER_ABSTIME flag set the timeout value is
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+ absolute. Optionally return the old expiration time in OTMR. */
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+extern int timerfd_settime (int __ufd, int __flags,
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+ __const struct itimerspec *__utmr,
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+ struct itimerspec *__otmr) __THROW;
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+
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+/* Return the next expiration time of UFD. */
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+extern int timerfd_gettime (int __ufd, struct itimerspec *__otmr) __THROW;
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+
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+__END_DECLS
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+
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+#endif /* sys/timerfd.h */
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diff --git a/libc/sysdeps/linux/common/timerfd.c b/libc/sysdeps/linux/common/timerfd.c
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new file mode 100644
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index 0000000..2332044
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--- a/dev/null
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+++ b/libc/sysdeps/linux/common/timerfd.c
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@@ -0,0 +1,32 @@
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+/* vi: set sw=4 ts=4: */
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+/*
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+ * timerfd_create() / timerfd_settime() / timerfd_gettime() for uClibc
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+ *
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+ * Copyright (C) 2009 Stephan Raue <stephan@openelec.tv>
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+ *
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+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
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+ */
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+
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+#include <sys/syscall.h>
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+#include <sys/timerfd.h>
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+
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+/*
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+ * timerfd_create()
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+ */
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+#ifdef __NR_timerfd_create
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+_syscall2(int, timerfd_create, int, clockid, int, flags)
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+#endif
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+
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+/*
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+ * timerfd_settime()
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+ */
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+#ifdef __NR_timerfd_settime
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+_syscall4(int,timerfd_settime, int, ufd, int, flags, const struct itimerspec *, utmr, struct itimerspec *, otmr)
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+#endif
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+
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+/*
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+ * timerfd_gettime()
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+ */
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+#ifdef __NR_timerfd_gettime
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+_syscall2(int, timerfd_gettime, int, ufd, struct itimerspec *, otmr)
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+#endif
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--
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