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| author | Florian Fainelli <florian@openwrt.org> | 2012-09-19 15:13:48 +0000 |
|---|---|---|
| committer | Florian Fainelli <florian@openwrt.org> | 2012-09-19 15:13:48 +0000 |
| commit | b336c9904c07c52cd770c1898dada0407854c586 (patch) | |
| tree | 3d90028ed4938246a58e23d75d849200bf0ef33c /toolchain/uClibc | |
| parent | 78f4cf3d70f7646e182fc98ba65b4d9ede0240d3 (diff) | |
| download | mtk-20170518-b336c9904c07c52cd770c1898dada0407854c586.zip mtk-20170518-b336c9904c07c52cd770c1898dada0407854c586.tar.gz mtk-20170518-b336c9904c07c52cd770c1898dada0407854c586.tar.bz2 | |
uClibc: fix uClibc implementation of eventfd
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>
SVN-Revision: 33478
Diffstat (limited to 'toolchain/uClibc')
| -rw-r--r-- | toolchain/uClibc/patches-0.9.33.2/500-eventfd.patch | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/toolchain/uClibc/patches-0.9.33.2/500-eventfd.patch b/toolchain/uClibc/patches-0.9.33.2/500-eventfd.patch new file mode 100644 index 0000000..778129e --- /dev/null +++ b/toolchain/uClibc/patches-0.9.33.2/500-eventfd.patch @@ -0,0 +1,59 @@ +From 7810e4f8027b5c4c8ceec6fefec4eb779362ebb5 Mon Sep 17 00:00:00 2001 +From: Khem Raj <raj.khem@gmail.com> +Date: Sun, 10 Jun 2012 16:36:23 +0000 +Subject: eventfd: Implement eventfd2 and fix eventfd + +eventfd: evntfd assumes to take two arguments instead it +should be one evntfd expects two therefore implement both syscalls with +correct parameters + +Thanks Eugene Rudoy for reporting it and also providing the patch + +Signed-off-by: Khem Raj <raj.khem@gmail.com> +--- +diff --git a/libc/sysdeps/linux/common/eventfd.c b/libc/sysdeps/linux/common/eventfd.c +index cc3f3f0..96597ab 100644 +--- a/libc/sysdeps/linux/common/eventfd.c ++++ b/libc/sysdeps/linux/common/eventfd.c +@@ -7,12 +7,24 @@ + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + ++#include <errno.h> + #include <sys/syscall.h> + #include <sys/eventfd.h> + + /* + * eventfd() + */ +-#ifdef __NR_eventfd +-_syscall2(int, eventfd, int, count, int, flags) ++#if defined __NR_eventfd || defined __NR_eventfd2 ++int eventfd (int count, int flags) ++{ ++#if defined __NR_eventfd2 ++ return INLINE_SYSCALL (eventfd2, 2, count, flags); ++#elif defined __NR_eventfd ++ if (flags != 0) { ++ __set_errno (EINVAL); ++ return -1; ++ } ++ return INLINE_SYSCALL (eventfd, 1, count); ++#endif ++} + #endif +diff --git a/libc/sysdeps/linux/common/stubs.c b/libc/sysdeps/linux/common/stubs.c +index 4d1e26c..7af14c1 100644 +--- a/libc/sysdeps/linux/common/stubs.c ++++ b/libc/sysdeps/linux/common/stubs.c +@@ -93,7 +93,7 @@ make_stub(epoll_ctl) + make_stub(epoll_wait) + #endif + +-#if !defined __NR_eventfd && defined __UCLIBC_LINUX_SPECIFIC__ ++#if !defined __NR_eventfd && !defined __NR_eventfd2 && defined __UCLIBC_LINUX_SPECIFIC__ + make_stub(eventfd) + #endif + +-- +cgit v0.9.0.1-2-gef13 |