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authorWaldemar Brodkorb <wbx@uclibc-ng.org>2014-07-05 18:09:19 +0200
committerWaldemar Brodkorb <wbx@openadk.org>2014-09-26 18:41:16 +0200
commit628943bcfde03547b9f83d04578bd1e8aa5d23fc (patch)
tree653a8b1775f50861f63e0dbd18268a11334a73ed /libc/sysdeps/linux/common
parentbd3eaf83ef1b4954b6c0e7ba8bbdd29b2cd4a833 (diff)
Add eventfd_read() and eventfd_write()
Signed-off-by: Khem Raj <raj.khem@gmail.com>
Diffstat (limited to 'libc/sysdeps/linux/common')
-rw-r--r--libc/sysdeps/linux/common/Makefile.in2
-rw-r--r--libc/sysdeps/linux/common/eventfd_read.c27
-rw-r--r--libc/sysdeps/linux/common/eventfd_write.c28
-rw-r--r--libc/sysdeps/linux/common/sys/eventfd.h4
4 files changed, 57 insertions, 4 deletions
diff --git a/libc/sysdeps/linux/common/Makefile.in b/libc/sysdeps/linux/common/Makefile.in
index a175ab64c..9d41771e2 100644
--- a/libc/sysdeps/linux/common/Makefile.in
+++ b/libc/sysdeps/linux/common/Makefile.in
@@ -25,6 +25,8 @@ CSRC-$(UCLIBC_LINUX_SPECIFIC) += \
capset.c \
dup3.c \
eventfd.c \
+ eventfd_read.c \
+ eventfd_write.c \
inotify.c \
ioperm.c \
iopl.c \
diff --git a/libc/sysdeps/linux/common/eventfd_read.c b/libc/sysdeps/linux/common/eventfd_read.c
new file mode 100644
index 000000000..75f2aaa11
--- /dev/null
+++ b/libc/sysdeps/linux/common/eventfd_read.c
@@ -0,0 +1,27 @@
+/* Copyright (C) 2007-2014 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <errno.h>
+#include <unistd.h>
+#include <sys/eventfd.h>
+
+
+int
+eventfd_read (int fd, eventfd_t *value)
+{
+ return read (fd, value, sizeof (eventfd_t)) != sizeof (eventfd_t) ? -1 : 0;
+}
diff --git a/libc/sysdeps/linux/common/eventfd_write.c b/libc/sysdeps/linux/common/eventfd_write.c
new file mode 100644
index 000000000..e1509cf5c
--- /dev/null
+++ b/libc/sysdeps/linux/common/eventfd_write.c
@@ -0,0 +1,28 @@
+/* Copyright (C) 2007-2014 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <errno.h>
+#include <unistd.h>
+#include <sys/eventfd.h>
+
+
+int
+eventfd_write (int fd, eventfd_t value)
+{
+ return write (fd, &value,
+ sizeof (eventfd_t)) != sizeof (eventfd_t) ? -1 : 0;
+}
diff --git a/libc/sysdeps/linux/common/sys/eventfd.h b/libc/sysdeps/linux/common/sys/eventfd.h
index 1bf785f32..91b265b2c 100644
--- a/libc/sysdeps/linux/common/sys/eventfd.h
+++ b/libc/sysdeps/linux/common/sys/eventfd.h
@@ -33,16 +33,12 @@ __BEGIN_DECLS
value to COUNT. */
extern int eventfd (int __count, int __flags) __THROW;
-#if 0 /* not (yet) implemented in uClibc */
-
/* Read event counter and possibly wait for events. */
extern int eventfd_read (int __fd, eventfd_t *__value);
/* Increment event counter. */
extern int eventfd_write (int __fd, eventfd_t __value);
-#endif
-
__END_DECLS
#endif /* sys/eventfd.h */