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-rw-r--r--sysdeps/unix/sysv/linux/aarch64/kernel-features.h1
-rw-r--r--sysdeps/unix/sysv/linux/alpha/kernel-features.h3
-rw-r--r--sysdeps/unix/sysv/linux/arm/kernel-features.h5
-rw-r--r--sysdeps/unix/sysv/linux/ia64/kernel-features.h5
-rw-r--r--sysdeps/unix/sysv/linux/internal_sendmmsg.S14
-rw-r--r--sysdeps/unix/sysv/linux/kernel-features.h21
-rw-r--r--sysdeps/unix/sysv/linux/microblaze/kernel-features.h5
-rw-r--r--sysdeps/unix/sysv/linux/mips/kernel-features.h5
-rw-r--r--sysdeps/unix/sysv/linux/sendmmsg.c13
-rw-r--r--sysdeps/unix/sysv/linux/tile/kernel-features.h5
10 files changed, 70 insertions, 7 deletions
diff --git a/sysdeps/unix/sysv/linux/aarch64/kernel-features.h b/sysdeps/unix/sysv/linux/aarch64/kernel-features.h
index 3f9cd049e9..417f89b2d9 100644
--- a/sysdeps/unix/sysv/linux/aarch64/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/aarch64/kernel-features.h
@@ -31,6 +31,7 @@
#define __ASSUME_O_CLOEXEC 1
#define __ASSUME_PIPE2 1
#define __ASSUME_RECVMMSG_SYSCALL 1
+#define __ASSUME_SENDMMSG_SYSCALL 1
#define __ASSUME_SIGNALFD4 1
#define __ASSUME_SOCK_CLOEXEC 1
#define __ASSUME_UTIMES 1
diff --git a/sysdeps/unix/sysv/linux/alpha/kernel-features.h b/sysdeps/unix/sysv/linux/alpha/kernel-features.h
index 6e4a515749..e691bb0e1e 100644
--- a/sysdeps/unix/sysv/linux/alpha/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/alpha/kernel-features.h
@@ -47,9 +47,10 @@
# define __ASSUME_RECVMMSG_SYSCALL 1
#endif
-/* Support for accept4 was added for alpha in 3.2. */
+/* Support for accept4 and sendmmsg was added for alpha in 3.2. */
#if __LINUX_KERNEL_VERSION >= 0x030200
# define __ASSUME_ACCEPT4_SYSCALL 1
+# define __ASSUME_SENDMMSG_SYSCALL 1
#endif
#include_next <kernel-features.h>
diff --git a/sysdeps/unix/sysv/linux/arm/kernel-features.h b/sysdeps/unix/sysv/linux/arm/kernel-features.h
index 7b43e365e6..401343be8d 100644
--- a/sysdeps/unix/sysv/linux/arm/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/arm/kernel-features.h
@@ -41,6 +41,11 @@
# define __ASSUME_ACCEPT4_SYSCALL 1
#endif
+/* Support for the sendmmsg syscall was added in 3.0. */
+#if __LINUX_KERNEL_VERSION >= 0x030000
+# define __ASSUME_SENDMMSG_SYSCALL 1
+#endif
+
#include_next <kernel-features.h>
/* Support for pselect6, ppoll and epoll_pwait was added in 2.6.32. */
diff --git a/sysdeps/unix/sysv/linux/ia64/kernel-features.h b/sysdeps/unix/sysv/linux/ia64/kernel-features.h
index b4955d9b1d..dd4de39fc7 100644
--- a/sysdeps/unix/sysv/linux/ia64/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/ia64/kernel-features.h
@@ -52,6 +52,11 @@
# define __ASSUME_RECVMMSG_SYSCALL 1
#endif
+/* Support for the sendmmsg syscall was added in 3.0. */
+#if __LINUX_KERNEL_VERSION >= 0x030000
+# define __ASSUME_SENDMMSG_SYSCALL 1
+#endif
+
/* Support for the accept4 syscall was added in 3.3. */
#if __LINUX_KERNEL_VERSION >= 0x030300
# define __ASSUME_ACCEPT4_SYSCALL 1
diff --git a/sysdeps/unix/sysv/linux/internal_sendmmsg.S b/sysdeps/unix/sysv/linux/internal_sendmmsg.S
index e6681f099d..4d903ea729 100644
--- a/sysdeps/unix/sysv/linux/internal_sendmmsg.S
+++ b/sysdeps/unix/sysv/linux/internal_sendmmsg.S
@@ -1,15 +1,25 @@
#include <kernel-features.h>
#include <sys/syscall.h>
+
+/* Do not use the sendmmsg syscall on socketcall architectures unless
+ it was added at the same time as the socketcall support or can be
+ assumed to be present. */
+#if defined __ASSUME_SOCKETCALL \
+ && !defined __ASSUME_SENDMMSG_SYSCALL_WITH_SOCKETCALL \
+ && !defined __ASSUME_SENDMMSG_SYSCALL
+# undef __NR_sendmmsg
+#endif
+
#if !defined __NR_sendmmsg && defined __NR_socketcall
# define socket sendmmsg
-# ifndef __ASSUME_SENDMMSG
+# ifndef __ASSUME_SENDMMSG_SOCKETCALL
# define __socket __internal_sendmmsg
# define NO_WEAK_ALIAS
# endif
# define NARGS 4
# define NEED_CANCELLATION
# include <socket.S>
-# ifdef __ASSUME_SENDMMSG
+# ifdef __ASSUME_SENDMMSG_SOCKETCALL
libc_hidden_def (__sendmmsg)
# endif
#endif
diff --git a/sysdeps/unix/sysv/linux/kernel-features.h b/sysdeps/unix/sysv/linux/kernel-features.h
index 034257edfa..555b82cf05 100644
--- a/sysdeps/unix/sysv/linux/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/kernel-features.h
@@ -271,8 +271,25 @@
# define __ASSUME_PRLIMIT64 1
#endif
-/* sendmmsg is available in 2.6.39. */
-#if __LINUX_KERNEL_VERSION >= 0x020627
+/* Support for sendmmsg functionality was added in 3.0. The macros
+ defined correspond to those for accept4 and recvmmsg. */
+#if __LINUX_KERNEL_VERSION >= 0x030000 && defined __ASSUME_SOCKETCALL
+# define __ASSUME_SENDMMSG_SOCKETCALL 1
+#endif
+
+/* The sendmmsg syscall was added for i386, x86_64, PowerPC, SH and
+ SPARC in 3.0. */
+#if __LINUX_KERNEL_VERSION >= 0x030000 \
+ && (defined __i386__ || defined __x86_64__ || defined __powerpc__ \
+ || defined __sh__ || defined __sparc__)
+# define __ASSUME_SENDMMSG_SYSCALL 1
+#endif
+#if defined __i386__ || defined __powerpc__ || defined __sh__ \
+ || defined __sparc__
+# define __ASSUME_SENDMMSG_SYSCALL_WITH_SOCKETCALL 1
+#endif
+
+#if defined __ASSUME_SENDMMSG_SOCKETCALL || defined __ASSUME_SENDMMSG_SYSCALL
# define __ASSUME_SENDMMSG 1
#endif
diff --git a/sysdeps/unix/sysv/linux/microblaze/kernel-features.h b/sysdeps/unix/sysv/linux/microblaze/kernel-features.h
index 7266e96495..1e9aba5f42 100644
--- a/sysdeps/unix/sysv/linux/microblaze/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/microblaze/kernel-features.h
@@ -36,4 +36,9 @@
#endif
#define __ASSUME_RECVMMSG_SYSCALL_WITH_SOCKETCALL 1
+/* Support for the sendmmsg syscall was added in 3.3. */
+#if __LINUX_KERNEL_VERSION >= 0x030300
+# define __ASSUME_SENDMMSG_SYSCALL 1
+#endif
+
#include_next <kernel-features.h>
diff --git a/sysdeps/unix/sysv/linux/mips/kernel-features.h b/sysdeps/unix/sysv/linux/mips/kernel-features.h
index 22064d9bd3..52cbf3a5ba 100644
--- a/sysdeps/unix/sysv/linux/mips/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/mips/kernel-features.h
@@ -41,6 +41,11 @@
# define __ASSUME_RECVMMSG_SYSCALL 1
#endif
+/* Support for the sendmmsg syscall was added in 3.1. */
+#if __LINUX_KERNEL_VERSION >= 0x030100
+# define __ASSUME_SENDMMSG_SYSCALL 1
+#endif
+
#include_next <kernel-features.h>
/* The n32 syscall ABI did not have a getdents64 syscall until
diff --git a/sysdeps/unix/sysv/linux/sendmmsg.c b/sysdeps/unix/sysv/linux/sendmmsg.c
index f8494be044..30740664d0 100644
--- a/sysdeps/unix/sysv/linux/sendmmsg.c
+++ b/sysdeps/unix/sysv/linux/sendmmsg.c
@@ -23,6 +23,14 @@
#include <sys/syscall.h>
#include <kernel-features.h>
+/* Do not use the sendmmsg syscall on socketcall architectures unless
+ it was added at the same time as the socketcall support or can be
+ assumed to be present. */
+#if defined __ASSUME_SOCKETCALL \
+ && !defined __ASSUME_SENDMMSG_SYSCALL_WITH_SOCKETCALL \
+ && !defined __ASSUME_SENDMMSG_SYSCALL
+# undef __NR_sendmmsg
+#endif
#ifdef __NR_sendmmsg
int
@@ -42,7 +50,7 @@ __sendmmsg (int fd, struct mmsghdr *vmessages, unsigned int vlen, int flags)
libc_hidden_def (__sendmmsg)
weak_alias (__sendmmsg, sendmmsg)
#elif defined __NR_socketcall
-# ifndef __ASSUME_SENDMMSG
+# ifndef __ASSUME_SENDMMSG_SOCKETCALL
extern int __internal_sendmmsg (int fd, struct mmsghdr *vmessages,
unsigned int vlen, int flags)
attribute_hidden;
@@ -86,7 +94,8 @@ __sendmmsg (int fd, struct mmsghdr *vmessages, unsigned int vlen, int flags)
libc_hidden_def (__sendmmsg)
weak_alias (__sendmmsg, sendmmsg)
# else
-/* When __ASSUME_SENDMMSG sendmmsg is defined in internal_sendmmsg.S. */
+/* When __ASSUME_SENDMMSG_SOCKETCALL sendmmsg is defined in
+ internal_sendmmsg.S. */
# endif
#else
# include <socket/sendmmsg.c>
diff --git a/sysdeps/unix/sysv/linux/tile/kernel-features.h b/sysdeps/unix/sysv/linux/tile/kernel-features.h
index b415d8f10f..bf7bddc47f 100644
--- a/sysdeps/unix/sysv/linux/tile/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/tile/kernel-features.h
@@ -29,6 +29,11 @@
#define __ASSUME_DUP3 1
#define __ASSUME_RECVMMSG_SYSCALL 1
+/* Support for the sendmmsg syscall was added in 3.0. */
+#if __LINUX_KERNEL_VERSION >= 0x030000
+# define __ASSUME_SENDMMSG_SYSCALL 1
+#endif
+
#include_next <kernel-features.h>
/* Define this if your 32-bit syscall API requires 64-bit register