From 628943bcfde03547b9f83d04578bd1e8aa5d23fc Mon Sep 17 00:00:00 2001 From: Waldemar Brodkorb Date: Sat, 5 Jul 2014 18:09:19 +0200 Subject: Add eventfd_read() and eventfd_write() Signed-off-by: Khem Raj --- libc/sysdeps/linux/common/Makefile.in | 2 ++ libc/sysdeps/linux/common/eventfd_read.c | 27 +++++++++++++++++++++++++++ libc/sysdeps/linux/common/eventfd_write.c | 28 ++++++++++++++++++++++++++++ libc/sysdeps/linux/common/sys/eventfd.h | 4 ---- 4 files changed, 57 insertions(+), 4 deletions(-) create mode 100644 libc/sysdeps/linux/common/eventfd_read.c create mode 100644 libc/sysdeps/linux/common/eventfd_write.c (limited to 'libc/sysdeps') 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 + . */ + +#include +#include +#include + + +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 + . */ + +#include +#include +#include + + +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 */ -- cgit v1.2.3