1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
|
From: jc@eclis.ch
To: uclibc@uclibc.org
Subject: [PATCH 1/1] Add eventfd support.
Date: Mon, 24 Oct 2011 19:07:43 +0200
Message-Id: <1319476064-32442-1-git-send-email-jc@eclis.ch>
X-Mailer: git-send-email 1.7.2.5
X-BeenThere: uclibc@uclibc.org
X-Mailman-Version: 2.1.14
Precedence: list
List-Id: "Discussion and development of uClibc \(the embedded C library\)"
<uclibc.uclibc.org>
List-Unsubscribe: <http://lists.busybox.net/mailman/options/uclibc>,
<mailto:uclibc-request@uclibc.org?subject=unsubscribe>
List-Archive: <http://lists.busybox.net/pipermail/uclibc>
List-Post: <mailto:uclibc@uclibc.org>
List-Help: <mailto:uclibc-request@uclibc.org?subject=help>
List-Subscribe: <http://lists.busybox.net/mailman/listinfo/uclibc>,
<mailto:uclibc-request@uclibc.org?subject=subscribe>
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Errors-To: uclibc-bounces@uclibc.org
Sender: uclibc-bounces@uclibc.org
From: Jean-Christian de Rivaz <jc@eclis.ch>
Hello,
I whould like to share this simple patch that add the eventfd call to
uClibc. Please review so it can be accepted to be merged.
Jean-Christian
Signed-off-by: Jean-Christian de Rivaz <jc@eclis.ch>
---
libc/sysdeps/linux/common/Makefile.in | 3 +-
libc/sysdeps/linux/common/eventfd.c | 18 +++++++++++
libc/sysdeps/linux/common/sys/eventfd.h | 48 +++++++++++++++++++++++++++++++
3 files changed, 68 insertions(+), 1 deletions(-)
create mode 100644 libc/sysdeps/linux/common/eventfd.c
create mode 100644 libc/sysdeps/linux/common/sys/eventfd.h
diff --git a/libc/sysdeps/linux/common/Makefile.in b/libc/sysdeps/linux/common/Makefile.in
index 8f936ff..63f3f6f 100644
--- a/libc/sysdeps/linux/common/Makefile.in
+++ b/libc/sysdeps/linux/common/Makefile.in
@@ -24,7 +24,8 @@ CSRC-$(UCLIBC_LINUX_SPECIFIC) += capget.c capset.c inotify.c ioperm.c iopl.c \
remap_file_pages.c sched_getaffinity.c sched_setaffinity.c \
sendfile64.c sendfile.c setfsgid.c setfsuid.c setresuid.c \
splice.c vmsplice.c tee.c signalfd.c swapoff.c swapon.c \
- sync_file_range.c sysctl.c sysinfo.c timerfd.c uselib.c vhangup.c
+ sync_file_range.c sysctl.c sysinfo.c eventfd.c timerfd.c uselib.c \
+ vhangup.c
# NPTL needs these internally: madvise.c
CSRC-$(findstring y,$(UCLIBC_LINUX_SPECIFIC)$(UCLIBC_HAS_THREADS_NATIVE)) += madvise.c
ifeq ($(UCLIBC_HAS_THREADS_NATIVE),y)
diff --git a/libc/sysdeps/linux/common/eventfd.c b/libc/sysdeps/linux/common/eventfd.c
new file mode 100644
index 0000000..cc3f3f0
--- /dev/null
+++ b/libc/sysdeps/linux/common/eventfd.c
@@ -0,0 +1,18 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * eventfd() for uClibc
+ *
+ * Copyright (C) 2011 Jean-Christian de Rivaz <jc@eclis.ch>
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+
+#include <sys/syscall.h>
+#include <sys/eventfd.h>
+
+/*
+ * eventfd()
+ */
+#ifdef __NR_eventfd
+_syscall2(int, eventfd, int, count, int, flags)
+#endif
diff --git a/libc/sysdeps/linux/common/sys/eventfd.h b/libc/sysdeps/linux/common/sys/eventfd.h
new file mode 100644
index 0000000..311f803
--- /dev/null
+++ b/libc/sysdeps/linux/common/sys/eventfd.h
@@ -0,0 +1,48 @@
+/* Copyright (C) 2007, 2008, 2009 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#ifndef _SYS_EVENTFD_H
+#define _SYS_EVENTFD_H 1
+
+#include <stdint.h>
+
+
+/* Type for event counter. */
+typedef uint64_t eventfd_t;
+
+/* Flags for signalfd. */
+enum
+ {
+ EFD_SEMAPHORE = 1,
+#define EFD_SEMAPHORE EFD_SEMAPHORE
+ EFD_CLOEXEC = 02000000,
+#define EFD_CLOEXEC EFD_CLOEXEC
+ EFD_NONBLOCK = 04000
+#define EFD_NONBLOCK EFD_NONBLOCK
+ };
+
+
+__BEGIN_DECLS
+
+/* Return file descriptor for generic event channel. Set initial
+ value to COUNT. */
+extern int eventfd (int __count, int __flags) __THROW;
+
+__END_DECLS
+
+#endif /* sys/eventfd.h */
--
1.7.2.5
_______________________________________________
uClibc mailing list
uClibc@uclibc.org
http://lists.busybox.net/mailman/listinfo/uclibc
|
