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authorThierry Reding <thierry.reding@avionic-design.de>2011-05-11 09:28:13 +0200
committerBernhard Reutner-Fischer <rep.dot.nop@gmail.com>2011-05-11 21:57:20 +0200
commitbf5dd19d97991de30486abaedb1868f6eb049a70 (patch)
treed3e8beffb8b1f15d267a75e37d93387e2c95a94f
parent23b99061c80f6979cdf873e534f6cd213b460781 (diff)
downloaduClibc-alpine-bf5dd19d97991de30486abaedb1868f6eb049a70.tar.bz2
uClibc-alpine-bf5dd19d97991de30486abaedb1868f6eb049a70.tar.xz
Implement epoll_create1 and epoll_pwait system calls.
Note: TODO: This lacks cancellation support. Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
-rw-r--r--libc/sysdeps/linux/common/epoll.c16
-rw-r--r--libc/sysdeps/linux/common/sys/epoll.h40
-rw-r--r--libc/sysdeps/linux/x86_64/sys/epoll.h36
3 files changed, 87 insertions, 5 deletions
diff --git a/libc/sysdeps/linux/common/epoll.c b/libc/sysdeps/linux/common/epoll.c
index dda92282e..41c4eacc2 100644
--- a/libc/sysdeps/linux/common/epoll.c
+++ b/libc/sysdeps/linux/common/epoll.c
@@ -18,6 +18,13 @@ _syscall1(int, epoll_create, int, size)
#endif
/*
+ * epoll_create1()
+ */
+#ifdef __NR_epoll_create1
+_syscall1(int, epoll_create1, int, flags)
+#endif
+
+/*
* epoll_ctl()
*/
#ifdef __NR_epoll_ctl
@@ -29,4 +36,13 @@ _syscall4(int,epoll_ctl, int, epfd, int, op, int, fd, struct epoll_event *, even
*/
#ifdef __NR_epoll_wait
_syscall4(int, epoll_wait, int, epfd, struct epoll_event *, events, int, maxevents, int, timeout)
+/* TODO: add cancellation for epoll_wait */
+#endif
+
+/*
+ * epoll_pwait()
+ */
+#ifdef __NR_epoll_pwait
+_syscall5(int, epoll_pwait, int, epfd, struct epoll_event *, events, int, maxevents, int, timeout, __const sigset_t *, ss)
+/* TODO: add cancellation for epoll_pwait */
#endif
diff --git a/libc/sysdeps/linux/common/sys/epoll.h b/libc/sysdeps/linux/common/sys/epoll.h
index 44e814bfd..f6a648872 100644
--- a/libc/sysdeps/linux/common/sys/epoll.h
+++ b/libc/sysdeps/linux/common/sys/epoll.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+/* Copyright (C) 2002-2006, 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
@@ -22,6 +22,24 @@
#include <stdint.h>
#include <sys/types.h>
+/* Get __sigset_t. */
+#include <bits/sigset.h>
+
+#ifndef __sigset_t_defined
+# define __sigset_t_defined
+typedef __sigset_t sigset_t;
+#endif
+
+
+/* Flags to be passed to epoll_create1. */
+enum
+ {
+ EPOLL_CLOEXEC = 02000000,
+#define EPOLL_CLOEXEC EPOLL_CLOEXEC
+ EPOLL_NONBLOCK = 04000
+#define EPOLL_NONBLOCK EPOLL_NONBLOCK
+ };
+
enum EPOLL_EVENTS
{
@@ -55,9 +73,9 @@ enum EPOLL_EVENTS
/* Valid opcodes ( "op" parameter ) to issue to epoll_ctl(). */
-#define EPOLL_CTL_ADD 1 /* Add a file decriptor to the interface. */
-#define EPOLL_CTL_DEL 2 /* Remove a file decriptor from the interface. */
-#define EPOLL_CTL_MOD 3 /* Change file decriptor epoll_event structure. */
+#define EPOLL_CTL_ADD 1 /* Add a file descriptor to the interface. */
+#define EPOLL_CTL_DEL 2 /* Remove a file descriptor from the interface. */
+#define EPOLL_CTL_MOD 3 /* Change file descriptor epoll_event structure. */
typedef union epoll_data
@@ -83,6 +101,10 @@ __BEGIN_DECLS
returned by epoll_create() should be closed with close(). */
extern int epoll_create (int __size) __THROW;
+/* Same as epoll_create but with a FLAGS parameter. The unused SIZE
+ parameter has been dropped. */
+extern int epoll_create1 (int __flags) __THROW;
+
/* Manipulate an epoll instance "epfd". Returns 0 in case of success,
-1 in case of error ( the "errno" variable will contain the
@@ -107,6 +129,16 @@ extern int epoll_ctl (int __epfd, int __op, int __fd,
extern int epoll_wait (int __epfd, struct epoll_event *__events,
int __maxevents, int __timeout);
+
+/* Same as epoll_wait, but the thread's signal mask is temporarily
+ and atomically replaced with the one provided as parameter.
+
+ This function is a cancellation point and therefore not marked with
+ __THROW. */
+extern int epoll_pwait (int __epfd, struct epoll_event *__events,
+ int __maxevents, int __timeout,
+ __const __sigset_t *__ss);
+
__END_DECLS
#endif /* sys/epoll.h */
diff --git a/libc/sysdeps/linux/x86_64/sys/epoll.h b/libc/sysdeps/linux/x86_64/sys/epoll.h
index 02672d3c7..a8171cc36 100644
--- a/libc/sysdeps/linux/x86_64/sys/epoll.h
+++ b/libc/sysdeps/linux/x86_64/sys/epoll.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002,2003,2004,2005,2006 Free Software Foundation, Inc.
+/* Copyright (C) 2002-2008, 2010 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
@@ -22,6 +22,24 @@
#include <stdint.h>
#include <sys/types.h>
+/* Get __sigset_t. */
+#include <bits/sigset.h>
+
+#ifndef __sigset_t_defined
+# define __sigset_t_defined
+typedef __sigset_t sigset_t;
+#endif
+
+
+/* Flags to be passed to epoll_create1. */
+enum
+ {
+ EPOLL_CLOEXEC = 02000000,
+#define EPOLL_CLOEXEC EPOLL_CLOEXEC
+ EPOLL_NONBLOCK = 04000
+#define EPOLL_NONBLOCK EPOLL_NONBLOCK
+ };
+
enum EPOLL_EVENTS
{
@@ -45,6 +63,8 @@ enum EPOLL_EVENTS
#define EPOLLERR EPOLLERR
EPOLLHUP = 0x010,
#define EPOLLHUP EPOLLHUP
+ EPOLLRDHUP = 0x2000,
+#define EPOLLRDHUP EPOLLRDHUP
EPOLLONESHOT = (1 << 30),
#define EPOLLONESHOT EPOLLONESHOT
EPOLLET = (1 << 31)
@@ -81,6 +101,10 @@ __BEGIN_DECLS
returned by epoll_create() should be closed with close(). */
extern int epoll_create (int __size) __THROW;
+/* Same as epoll_create but with a FLAGS parameter. The unused SIZE
+ parameter has been dropped. */
+extern int epoll_create1 (int __flags) __THROW;
+
/* Manipulate an epoll instance "epfd". Returns 0 in case of success,
-1 in case of error ( the "errno" variable will contain the
@@ -105,6 +129,16 @@ extern int epoll_ctl (int __epfd, int __op, int __fd,
extern int epoll_wait (int __epfd, struct epoll_event *__events,
int __maxevents, int __timeout);
+
+/* Same as epoll_wait, but the thread's signal mask is temporarily
+ and atomically replaced with the one provided as parameter.
+
+ This function is a cancellation point and therefore not marked with
+ __THROW. */
+extern int epoll_pwait (int __epfd, struct epoll_event *__events,
+ int __maxevents, int __timeout,
+ __const __sigset_t *__ss);
+
__END_DECLS
#endif /* sys/epoll.h */