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71bf514a80
uClibc declares eventfd() as taking two arguments but doesn't properly pass the second argument to the kernel. The problem is discussed at: http://lists.uclibc.org/pipermail/uclibc/2012-May/046873.html This patch is taken from uclibc 0.9.33 git, so will presumably be integrated in any future releases. Signed-off-by: Andy Leiserson <andy@leiserson.org> git-svn-id: svn://svn.openwrt.org/openwrt/trunk@33478 3c298f89-4303-0410-b956-a3cf2f4a3e73
60 lines
1.7 KiB
Diff
60 lines
1.7 KiB
Diff
From 7810e4f8027b5c4c8ceec6fefec4eb779362ebb5 Mon Sep 17 00:00:00 2001
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From: Khem Raj <raj.khem@gmail.com>
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Date: Sun, 10 Jun 2012 16:36:23 +0000
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Subject: eventfd: Implement eventfd2 and fix eventfd
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eventfd: evntfd assumes to take two arguments instead it
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should be one evntfd expects two therefore implement both syscalls with
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correct parameters
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Thanks Eugene Rudoy for reporting it and also providing the patch
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Signed-off-by: Khem Raj <raj.khem@gmail.com>
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---
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diff --git a/libc/sysdeps/linux/common/eventfd.c b/libc/sysdeps/linux/common/eventfd.c
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index cc3f3f0..96597ab 100644
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--- a/libc/sysdeps/linux/common/eventfd.c
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+++ b/libc/sysdeps/linux/common/eventfd.c
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@@ -7,12 +7,24 @@
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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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+#include <errno.h>
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#include <sys/syscall.h>
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#include <sys/eventfd.h>
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/*
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* eventfd()
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*/
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-#ifdef __NR_eventfd
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-_syscall2(int, eventfd, int, count, int, flags)
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+#if defined __NR_eventfd || defined __NR_eventfd2
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+int eventfd (int count, int flags)
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+{
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+#if defined __NR_eventfd2
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+ return INLINE_SYSCALL (eventfd2, 2, count, flags);
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+#elif defined __NR_eventfd
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+ if (flags != 0) {
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+ __set_errno (EINVAL);
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+ return -1;
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+ }
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+ return INLINE_SYSCALL (eventfd, 1, count);
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+#endif
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+}
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#endif
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diff --git a/libc/sysdeps/linux/common/stubs.c b/libc/sysdeps/linux/common/stubs.c
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index 4d1e26c..7af14c1 100644
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--- a/libc/sysdeps/linux/common/stubs.c
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+++ b/libc/sysdeps/linux/common/stubs.c
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@@ -93,7 +93,7 @@ make_stub(epoll_ctl)
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make_stub(epoll_wait)
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#endif
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-#if !defined __NR_eventfd && defined __UCLIBC_LINUX_SPECIFIC__
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+#if !defined __NR_eventfd && !defined __NR_eventfd2 && defined __UCLIBC_LINUX_SPECIFIC__
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make_stub(eventfd)
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#endif
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--
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cgit v0.9.0.1-2-gef13
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