From 74a2c71153b910ee4773866ee30be84730a4d5b8 Mon Sep 17 00:00:00 2001
From: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
Date: Wed, 11 May 2011 11:31:45 +0200
Subject: accept4: Implement cancellation

.. and add proper prototype, move it into it's own obj and other such
cleanups.

Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
---
 libc/inet/Makefile.in   |  6 ++++--
 libc/inet/accept.c      |  1 -
 libc/inet/accept4.c     |  8 +++++++
 libc/inet/socketcalls.c | 56 +++++++++++++++++++++++++++++++++++--------------
 4 files changed, 52 insertions(+), 19 deletions(-)
 create mode 100644 libc/inet/accept4.c

(limited to 'libc/inet')

diff --git a/libc/inet/Makefile.in b/libc/inet/Makefile.in
index abcf2f7d7..c490adf7e 100644
--- a/libc/inet/Makefile.in
+++ b/libc/inet/Makefile.in
@@ -44,11 +44,13 @@ CSRC-$(findstring y,$(UCLIBC_HAS_IPV4)$(UCLIBC_HAS_IPV6)) += \
 ## CSRC-y += encodep.c decodep.c formquery.c
 
 # multi source socketcalls.c
-socketcalls_CSRC += \
+socketcalls_CSRC-y += \
 	accept.c bind.c connect.c getpeername.c getsockname.c \
 	getsockopt.c listen.c recv.c recvfrom.c recvmsg.c send.c sendmsg.c \
 	sendto.c setsockopt.c shutdown.c socket.c socketpair.c
-CSRC-$(UCLIBC_HAS_SOCKET) += $(socketcalls_CSRC) opensock.c
+# FIXME: GNU / linux specific
+socketcalls_CSRC-y += accept4.c
+CSRC-$(UCLIBC_HAS_SOCKET) += $(socketcalls_CSRC-y) opensock.c
 
 CSRC-$(findstring y,$(UCLIBC_HAS_SOCKET)$(UCLIBC_HAS_IPV4)$(UCLIBC_HAS_IPV6)) += ethers.c ether_addr.c
 
diff --git a/libc/inet/accept.c b/libc/inet/accept.c
index b0fd2b2c6..0217a6876 100644
--- a/libc/inet/accept.c
+++ b/libc/inet/accept.c
@@ -5,5 +5,4 @@
  */
 
 #define L_accept
-#define L_accept4
 #include "socketcalls.c"
diff --git a/libc/inet/accept4.c b/libc/inet/accept4.c
new file mode 100644
index 000000000..e2fdd6c2f
--- /dev/null
+++ b/libc/inet/accept4.c
@@ -0,0 +1,8 @@
+/*
+ * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+
+#define L_accept4
+#include "socketcalls.c"
diff --git a/libc/inet/socketcalls.c b/libc/inet/socketcalls.c
index ff5fdaa30..aae7e93bf 100644
--- a/libc/inet/socketcalls.c
+++ b/libc/inet/socketcalls.c
@@ -83,6 +83,46 @@ weak_alias(__libc_accept,accept)
 libc_hidden_weak(accept)
 #endif
 
+#ifdef L_accept4
+#ifdef __NR_accept4
+# define __NR___sys_accept4  __NR_accept4
+static _syscall4(int, __sys_accept4, int, fd, struct sockaddr *, addr, socklen_t *, addrlen, int, flags)
+int accept4(int fd, struct sockaddr *addr, socklen_t * addrlen, int flags)
+{
+	if (SINGLE_THREAD_P)
+		return __sys_accept4(fd, addr, addrlen, flags);
+#ifdef __UCLIBC_HAS_THREADS_NATIVE__
+	else {
+		int oldtype = LIBC_CANCEL_ASYNC ();
+		int result = __sys_accept4(fd, addr, addrlen, flags);
+		LIBC_CANCEL_RESET (oldtype);
+		return result;
+	}
+#endif
+}
+#elif defined(__NR_socketcall)
+int accept4(int fd, struct sockaddr *addr, socklen_t *addrlen, int flags)
+{
+	unsigned long args[4];
+
+	args[0] = fd;
+	args[1] = (unsigned long) addr;
+	args[2] = (unsigned long) addrlen;
+	args[3] = flags;
+	if (SINGLE_THREAD_P)
+		return __socketcall(SYS_ACCEPT4, args);
+#ifdef __UCLIBC_HAS_THREADS_NATIVE__
+	else {
+		int oldtype = LIBC_CANCEL_ASYNC ();
+		int result = __socketcall(SYS_ACCEPT4, args);
+		LIBC_CANCEL_RESET (oldtype);
+		return result;
+	}
+#endif
+}
+#endif
+#endif
+
 #ifdef L_bind
 #ifdef __NR_bind
 _syscall3(int, bind, int, sockfd, const struct sockaddr *, myaddr, socklen_t, addrlen)
@@ -562,19 +602,3 @@ int socketpair(int family, int type, int protocol, int sockvec[2])
 #endif
 #endif
 
-#ifdef L_accept4
-#ifdef __NR_accept4
-_syscall4(int, accept4, int, sockfd, struct sockaddr *, addr, socklen_t *, addrlen, int, flags)
-#elif defined(__NR_socketcall)
-int accept4(int sockfd, struct sockaddr *addr, socklen_t *addrlen, int flags)
-{
-	unsigned long args[4];
-
-	args[0] = sockfd;
-	args[1] = (unsigned long) addr;
-	args[2] = (unsigned long) addrlen;
-	args[3] = flags;
-	return __socketcall(SYS_ACCEPT4, args);
-}
-#endif
-#endif
-- 
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