Consolidate Linux connect implementation

This patch consolidates the connect Linux syscall implementation on
sysdeps/unix/sysv/linux/accept.c.  The changes are:

  1. Remove connect from auto-generation syscalls.list on the architecture
     that uses __NR_connect.
  2. Define __NR_connect as default (__ASSUME_CONNECT_SYSCALL) and undef for
     architectures that do not support it.

Checked on i686-linux-gnu, x86_64-linux-gnu, x86_64-linux-gnux32,
aarch64-linux-gnu, arm-linux-gnueabihf, and powerpc64le-linux-gnu.

	* sysdeps/unix/sysv/linux/alpha/syscalls.list: Remove connect from
	auto-generation list.
	* sysdeps/unix/sysv/linux/arm/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/generic/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/hppa/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/ia64/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/mips/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/connect.c: Simplify include list.
	* sysdeps/unix/sysv/linux/kernel-features.h
	(__ASSUME_CONNECT_SYSCALL): Define.
	* sysdeps/unix/sysv/linux/i386/kernel-features.h
	(__ASSUME_CONNECT_SYSCALL): Undef if kernel does not support it.
	* sysdeps/unix/sysv/linux/m68k/kernel-features.h
	(__ASSUME_CONNECT_SYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/s390/kernel-features.h
	(__ASSUME_CONNECT_SYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/sparc/kernel-features.h
	(__ASSUME_CONNECT_SYSCALL): Likewise.

15 files changed, 26 insertions, 16 deletions

diff --git a/ChangeLog b/ChangeLog
index 1c8c729a52..95b0856ad4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,26 @@
 2016-03-08  Adhemerval Zanella  <adhemerval.zanella@linaro.org>
 
+	* sysdeps/unix/sysv/linux/alpha/syscalls.list: Remove connect from
+	auto-generation list.
+	* sysdeps/unix/sysv/linux/arm/syscalls.list: Likewise.
+	* sysdeps/unix/sysv/linux/generic/syscalls.list: Likewise.
+	* sysdeps/unix/sysv/linux/sparc/sparc64/syscalls.list: Likewise.
+	* sysdeps/unix/sysv/linux/x86_64/syscalls.list: Likewise.
+	* sysdeps/unix/sysv/linux/hppa/syscalls.list: Likewise.
+	* sysdeps/unix/sysv/linux/ia64/syscalls.list: Likewise.
+	* sysdeps/unix/sysv/linux/mips/syscalls.list: Likewise.
+	* sysdeps/unix/sysv/linux/connect.c: Simplify include list.
+	* sysdeps/unix/sysv/linux/kernel-features.h
+	(__ASSUME_CONNECT_SYSCALL): Define.
+	* sysdeps/unix/sysv/linux/i386/kernel-features.h
+	(__ASSUME_CONNECT_SYSCALL): Undef if kernel does not support it.
+	* sysdeps/unix/sysv/linux/m68k/kernel-features.h
+	(__ASSUME_CONNECT_SYSCALL): Likewise.
+	* sysdeps/unix/sysv/linux/s390/kernel-features.h
+	(__ASSUME_CONNECT_SYSCALL): Likewise.
+	* sysdeps/unix/sysv/linux/sparc/kernel-features.h
+	(__ASSUME_CONNECT_SYSCALL): Likewise.
+
 	* sysdeps/unix/sysv/linux/accept.c (__libc_accept): Replace
 	__ASSUME_ACCEPT4_FOR_ACCEPT_SYSCALL by __ASSUME_ACCEPT4_SYSCALL.
 	* sysdeps/unix/sysv/linux/alpha/syscalls.list?: Remove accept from
diff --git a/sysdeps/unix/sysv/linux/alpha/syscalls.list b/sysdeps/unix/sysv/linux/alpha/syscalls.list
index 4cfe19e645..e9efb43b56 100644
--- a/sysdeps/unix/sysv/linux/alpha/syscalls.list
+++ b/sysdeps/unix/sysv/linux/alpha/syscalls.list
@@ -6,7 +6,6 @@ getpriority	-	getpriority	i:ii	__getpriority	getpriority
 
 # proper socket implementations:
 bind		-	bind		i:ipi	__bind		bind
-connect		-	connect		Ci:ipi	__libc_connect	__connect connect
 getpeername	-	getpeername	i:ipp	__getpeername	getpeername
 getsockname	-	getsockname	i:ipp	__getsockname	getsockname
 getsockopt	-	getsockopt	i:iiiBN	__getsockopt	getsockopt
diff --git a/sysdeps/unix/sysv/linux/arm/syscalls.list b/sysdeps/unix/sysv/linux/arm/syscalls.list
index 1c4f61ff40..1c12be4eef 100644
--- a/sysdeps/unix/sysv/linux/arm/syscalls.list
+++ b/sysdeps/unix/sysv/linux/arm/syscalls.list
@@ -23,7 +23,6 @@ personality	EXTRA	personality	Ei:i	__personality	personality
 
 # proper socket implementations:
 bind		-	bind		i:ipi	__bind		bind
-connect		-	connect		Ci:ipi	__libc_connect	__connect connect
 getpeername	-	getpeername	i:ipp	__getpeername	getpeername
 getsockname	-	getsockname	i:ipp	__getsockname	getsockname
 getsockopt	-	getsockopt	i:iiiBN	__getsockopt	getsockopt
diff --git a/sysdeps/unix/sysv/linux/connect.c b/sysdeps/unix/sysv/linux/connect.c
index 3837a5bea0..f6ab5df6ad 100644
--- a/sysdeps/unix/sysv/linux/connect.c
+++ b/sysdeps/unix/sysv/linux/connect.c
@@ -15,14 +15,9 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#include <errno.h>
-#include <signal.h>
 #include <sys/socket.h>
-
 #include <sysdep-cancel.h>
 #include <socketcall.h>
-#include <kernel-features.h>
-#include <sys/syscall.h>
 
 int
 __libc_connect (int fd, __CONST_SOCKADDR_ARG addr, socklen_t len)
diff --git a/sysdeps/unix/sysv/linux/generic/syscalls.list b/sysdeps/unix/sysv/linux/generic/syscalls.list
index b176a729d7..2874a1f8c7 100644
--- a/sysdeps/unix/sysv/linux/generic/syscalls.list
+++ b/sysdeps/unix/sysv/linux/generic/syscalls.list
@@ -5,7 +5,6 @@ socket		-	socket		i:iii	__socket	socket
 socketpair	-	socketpair	i:iiif	__socketpair	socketpair
 bind		-	bind		i:ipi	__bind		bind
 listen		-	listen		i:ii	__listen	listen
-connect		-	connect		Ci:ipi	__libc_connect	__connect connect
 getsockname	-	getsockname	i:ipp	__getsockname	getsockname
 getpeername	-	getpeername	i:ipp	__getpeername	getpeername
 sendto		-	sendto		Ci:ibnibn	__libc_sendto	__sendto sendto
diff --git a/sysdeps/unix/sysv/linux/hppa/syscalls.list b/sysdeps/unix/sysv/linux/hppa/syscalls.list
index ee814fba6f..288d096820 100644
--- a/sysdeps/unix/sysv/linux/hppa/syscalls.list
+++ b/sysdeps/unix/sysv/linux/hppa/syscalls.list
@@ -2,7 +2,6 @@
 
 # proper socket implementations:
 bind		-	bind		i:ipi	__bind		bind
-connect		-	connect		Ci:ipi	__libc_connect	__connect connect
 getpeername	-	getpeername	i:ipp	__getpeername	getpeername
 getsockname	-	getsockname	i:ipp	__getsockname	getsockname
 getsockopt	-	getsockopt	i:iiiBN	__getsockopt	getsockopt
diff --git a/sysdeps/unix/sysv/linux/i386/kernel-features.h b/sysdeps/unix/sysv/linux/i386/kernel-features.h
index 07462f824a..23ca79437f 100644
--- a/sysdeps/unix/sysv/linux/i386/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/i386/kernel-features.h
@@ -31,7 +31,6 @@
 # define __ASSUME_SOCKET_SYSCALL             1
 # define __ASSUME_SOCKETPAIR_SYSCALL         1
 # define __ASSUME_BIND_SYSCALL               1
-# define __ASSUME_CONNECT_SYSCALL            1
 # define __ASSUME_LISTEN_SYSCALL             1
 # define __ASSUME_GETSOCKOPT_SYSCALL         1
 # define __ASSUME_SETSOCKOPT_SYSCALL         1
@@ -52,6 +51,7 @@
 # undef __ASSUME_ACCEPT4_SYSCALL
 # undef __ASSUME_SENDMSG_SYSCALL
 # undef __ASSUME_RECVMSG_SYSCALL
+# undef __ASSUME_CONNECT_SYSCALL
 #endif
 
 /* i686 only supports ipc syscall.  */
diff --git a/sysdeps/unix/sysv/linux/ia64/syscalls.list b/sysdeps/unix/sysv/linux/ia64/syscalls.list
index 96db4c30a5..32fdb0878b 100644
--- a/sysdeps/unix/sysv/linux/ia64/syscalls.list
+++ b/sysdeps/unix/sysv/linux/ia64/syscalls.list
@@ -6,7 +6,6 @@ getpriority	-	getpriority	i:ii	__getpriority	getpriority
 
 # proper socket implementations:
 bind		-	bind		i:ipi	__bind		bind
-connect		-	connect		Ci:ipi	__libc_connect	__connect connect
 getpeername	-	getpeername	i:ipp	__getpeername	getpeername
 getsockname	-	getsockname	i:ipp	__getsockname	getsockname
 getsockopt	-	getsockopt	i:iiiBN	__getsockopt	getsockopt
diff --git a/sysdeps/unix/sysv/linux/kernel-features.h b/sysdeps/unix/sysv/linux/kernel-features.h
index 78b091b6ae..e93f5f441f 100644
--- a/sysdeps/unix/sysv/linux/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/kernel-features.h
@@ -148,6 +148,7 @@
 #define __ASSUME_SENDMSG_SYSCALL	1
 #define __ASSUME_RECVMSG_SYSCALL	1
 #define __ASSUME_ACCEPT_SYSCALL		1
+#define __ASSUME_CONNECT_SYSCALL	1
 
 /* Support for SysV IPC through wired syscalls.  All supported architectures
    either support ipc syscall and/or all the ipc correspondent syscalls.  */
diff --git a/sysdeps/unix/sysv/linux/m68k/kernel-features.h b/sysdeps/unix/sysv/linux/m68k/kernel-features.h
index ff196ac12f..e19ccf72b8 100644
--- a/sysdeps/unix/sysv/linux/m68k/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/m68k/kernel-features.h
@@ -25,7 +25,6 @@
 # define __ASSUME_SOCKET_SYSCALL             1
 # define __ASSUME_SOCKETPAIR_SYSCALL         1
 # define __ASSUME_BIND_SYSCALL               1
-# define __ASSUME_CONNECT_SYSCALL            1
 # define __ASSUME_LISTEN_SYSCALL             1
 # define __ASSUME_GETSOCKOPT_SYSCALL         1
 # define __ASSUME_SETSOCKOPT_SYSCALL         1
@@ -48,6 +47,7 @@
 # undef __ASSUME_SENDMMSG_SYSCALL
 # undef __ASSUME_SENDMSG_SYSCALL
 # undef __ASSUME_RECVMSG_SYSCALL
+# undef __ASSUME_CONNECT_SYSCALL
 #endif
 
 /* No support for PI futexes or robust mutexes before 3.10 for m68k.  */
diff --git a/sysdeps/unix/sysv/linux/mips/syscalls.list b/sysdeps/unix/sysv/linux/mips/syscalls.list
index 81ea2a7ada..8b0c5a3ad6 100644
--- a/sysdeps/unix/sysv/linux/mips/syscalls.list
+++ b/sysdeps/unix/sysv/linux/mips/syscalls.list
@@ -13,7 +13,6 @@ sysmips		-	sysmips		i:iiii	__sysmips	sysmips
 # it's provided for compatibility, though.
 #
 bind		-	bind		i:ipi	__bind		bind
-connect		-	connect		Ci:ipi	__libc_connect	__connect connect
 getpeername	-	getpeername	i:ipp	__getpeername	getpeername
 getsockname	-	getsockname	i:ipp	__getsockname	getsockname
 getsockopt	-	getsockopt	i:iiiBN	__getsockopt	getsockopt
diff --git a/sysdeps/unix/sysv/linux/s390/kernel-features.h b/sysdeps/unix/sysv/linux/s390/kernel-features.h
index ccfb0a2c88..50a7e8cc2a 100644
--- a/sysdeps/unix/sysv/linux/s390/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/s390/kernel-features.h
@@ -25,7 +25,6 @@
 # define __ASSUME_SOCKET_SYSCALL             1
 # define __ASSUME_SOCKETPAIR_SYSCALL         1
 # define __ASSUME_BIND_SYSCALL               1
-# define __ASSUME_CONNECT_SYSCALL            1
 # define __ASSUME_LISTEN_SYSCALL             1
 # define __ASSUME_GETSOCKOPT_SYSCALL         1
 # define __ASSUME_SETSOCKOPT_SYSCALL         1
@@ -48,6 +47,7 @@
 # undef __ASSUME_SENDMMSG_SYSCALL
 # undef __ASSUME_SENDMSG_SYSCALL
 # undef __ASSUME_RECVMSG_SYSCALL
+# undef __ASSUME_CONNECT_SYSCALL
 #endif
 
 /* s390 only supports ipc syscall.  */
diff --git a/sysdeps/unix/sysv/linux/sparc/kernel-features.h b/sysdeps/unix/sysv/linux/sparc/kernel-features.h
index 3ffa96e303..ba6e4c44e7 100644
--- a/sysdeps/unix/sysv/linux/sparc/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/sparc/kernel-features.h
@@ -40,6 +40,7 @@
 
 #if !defined __arch64__
 # undef __ASSUME_ACCEPT_SYSCALL
+# undef __ASSUME_CONNECT_SYSCALL
 #endif
 
 /* sparc only supports ipc syscall.  */
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/syscalls.list b/sysdeps/unix/sysv/linux/sparc/sparc64/syscalls.list
index 27ca5fa4a3..4c785fd019 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc64/syscalls.list
+++ b/sysdeps/unix/sysv/linux/sparc/sparc64/syscalls.list
@@ -3,7 +3,6 @@
 # Override select.S in parent directory:
 select		-	select		C:5	__select	select
 bind		-	bind		3	__bind		bind
-connect		-	connect		C:3	__libc_connect	__connect connect
 getpeername	-	getpeername	3	__getpeername	getpeername
 getsockname	-	getsockname	3	__getsockname	getsockname
 getsockopt	-	getsockopt	5	__getsockopt	getsockopt
diff --git a/sysdeps/unix/sysv/linux/x86_64/syscalls.list b/sysdeps/unix/sysv/linux/x86_64/syscalls.list
index fe7d1567cb..b832593823 100644
--- a/sysdeps/unix/sysv/linux/x86_64/syscalls.list
+++ b/sysdeps/unix/sysv/linux/x86_64/syscalls.list
@@ -11,7 +11,6 @@ syscall_clock_gettime	EXTRA	clock_gettime	Ei:ip		__syscall_clock_gettime
 
 # proper socket implementations:
 bind		-	bind		i:ipi	__bind		bind
-connect		-	connect		Ci:ipi	__libc_connect	__connect connect
 getpeername	-	getpeername	i:ipp	__getpeername	getpeername
 getsockname	-	getsockname	i:ipp	__getsockname	getsockname
 getsockopt	-	getsockopt	i:iiiBN	__getsockopt	getsockopt