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-rw-r--r--sysdeps/unix/sysv/linux/bits/socket.h12
-rw-r--r--sysdeps/unix/sysv/linux/kernel-features.h14
-rw-r--r--sysdeps/unix/sysv/linux/preadv.c88
-rw-r--r--sysdeps/unix/sysv/linux/preadv64.c6
-rw-r--r--sysdeps/unix/sysv/linux/pwritev.c88
-rw-r--r--sysdeps/unix/sysv/linux/pwritev64.c6
-rw-r--r--sysdeps/unix/sysv/linux/readv.c46
-rw-r--r--sysdeps/unix/sysv/linux/sys/eventfd.h2
-rw-r--r--sysdeps/unix/sysv/linux/wordsize-64/preadv64.c1
-rw-r--r--sysdeps/unix/sysv/linux/wordsize-64/pwritev64.c1
-rw-r--r--sysdeps/unix/sysv/linux/writev.c45
11 files changed, 261 insertions, 48 deletions
diff --git a/sysdeps/unix/sysv/linux/bits/socket.h b/sysdeps/unix/sysv/linux/bits/socket.h
index 72c7335ae5..88062e59ad 100644
--- a/sysdeps/unix/sysv/linux/bits/socket.h
+++ b/sysdeps/unix/sysv/linux/bits/socket.h
@@ -95,15 +95,20 @@ enum __socket_type
#define PF_ASH 18 /* Ash. */
#define PF_ECONET 19 /* Acorn Econet. */
#define PF_ATMSVC 20 /* ATM SVCs. */
+#define PF_RDS 21 /* RDS sockets. */
#define PF_SNA 22 /* Linux SNA Project */
#define PF_IRDA 23 /* IRDA sockets. */
#define PF_PPPOX 24 /* PPPoX sockets. */
#define PF_WANPIPE 25 /* Wanpipe API sockets. */
+#define PF_LLC 26 /* Linux LLC. */
+#define PF_CAN 29 /* Controller Area Network. */
+#define PF_TIPC 30 /* TIPC sockets. */
#define PF_BLUETOOTH 31 /* Bluetooth sockets. */
#define PF_IUCV 32 /* IUCV sockets. */
#define PF_RXRPC 33 /* RxRPC sockets. */
#define PF_ISDN 34 /* mISDN sockets. */
-#define PF_MAX 35 /* For now.. */
+#define PF_PHONET 35 /* Phonet sockets. */
+#define PF_MAX 36 /* For now.. */
/* Address families. */
#define AF_UNSPEC PF_UNSPEC
@@ -130,14 +135,19 @@ enum __socket_type
#define AF_ASH PF_ASH
#define AF_ECONET PF_ECONET
#define AF_ATMSVC PF_ATMSVC
+#define AF_RDS PF_RDS
#define AF_SNA PF_SNA
#define AF_IRDA PF_IRDA
#define AF_PPPOX PF_PPPOX
#define AF_WANPIPE PF_WANPIPE
+#define AF_LLC PF_LLC
+#define AF_CAN PF_CAN
+#define AF_TIPC PF_TIPC
#define AF_BLUETOOTH PF_BLUETOOTH
#define AF_IUCV PF_IUCV
#define AF_RXRPC PF_RXRPC
#define AF_ISDN PF_ISDN
+#define AF_PHONET PF_PHONET
#define AF_MAX PF_MAX
/* Socket level values. Others are defined in the appropriate headers.
diff --git a/sysdeps/unix/sysv/linux/kernel-features.h b/sysdeps/unix/sysv/linux/kernel-features.h
index 29afe27711..a640765b5c 100644
--- a/sysdeps/unix/sysv/linux/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/kernel-features.h
@@ -462,6 +462,13 @@
# define __ASSUME_SET_ROBUST_LIST 1
#endif
+/* Pessimistically assume that 2.6.18 introduced real handling of
+ large numbers of requests to readv and writev and that we don't
+ need a fallback. It likely worked for much longer. */
+#if __LINUX_KERNEL_VERSION >= 0x020612
+# define __ASSUME_COMPLETE_READV_WRITEV 1
+#endif
+
/* Support for PI futexes was added in 2.6.18. */
#if __LINUX_KERNEL_VERSION >= 0x020612
# define __ASSUME_FUTEX_LOCK_PI 1
@@ -522,3 +529,10 @@
#if __LINUX_KERNEL_VERSION >= 0x02061d
# define __ASSUME_FUTEX_CLOCK_REALTIME 1
#endif
+
+/* Support for preadv and pwritev was added in 2.6.30. */
+#if __LINUX_KERNEL_VERSION >= 0x02061e \
+ && (defined __i386__ || defined __x86_64__)
+# define __ASSUME_PREADV 1
+# define __ASSUME_PWRITEV 1
+#endif
diff --git a/sysdeps/unix/sysv/linux/preadv.c b/sysdeps/unix/sysv/linux/preadv.c
new file mode 100644
index 0000000000..e2f8238596
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/preadv.c
@@ -0,0 +1,88 @@
+/* Copyright (C) 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. */
+
+#include <errno.h>
+#include <stddef.h>
+#include <sys/param.h>
+#if __WORDSIZE == 64
+/* Hide the preadv64 declaration. */
+# define preadv64 __redirect_preadv64
+#endif
+#include <sys/uio.h>
+
+#include <sysdep-cancel.h>
+#include <sys/syscall.h>
+#include <kernel-features.h>
+
+#ifndef PREADV
+# define PREADV preadv
+# define PREADV_REPLACEMENT __atomic_preadv_replacement
+# define PREAD __pread
+# define OFF_T off_t
+#endif
+
+static ssize_t PREADV_REPLACEMENT (int, __const struct iovec *,
+ int, OFF_T) internal_function;
+
+
+ssize_t
+PREADV (fd, vector, count, offset)
+ int fd;
+ const struct iovec *vector;
+ int count;
+ OFF_T offset;
+{
+#ifdef __NR_preadv
+ ssize_t result;
+
+ if (SINGLE_THREAD_P)
+ result = INLINE_SYSCALL (preadv, 5, fd, vector, count, offset >> 32,
+ offset & 0xffffffff);
+ else
+ {
+ int oldtype = LIBC_CANCEL_ASYNC ();
+
+ result = INLINE_SYSCALL (preadv, 5, fd, vector, count, offset >> 32,
+ offset & 0xffffffff);
+
+ LIBC_CANCEL_RESET (oldtype);
+ }
+# ifdef __ASSUME_PREADV
+ return result;
+# endif
+#endif
+
+#ifndef __ASSUME_PREADV
+# ifdef __NR_preadv
+ if (result >= 0 || errno != ENOSYS)
+ return result;
+# endif
+
+ return PREADV_REPLACEMENT (fd, vector, count, offset);
+#endif
+}
+#if __WORDSIZE == 64
+# undef preadv64
+strong_alias (preadv, preadv64)
+#endif
+
+#ifndef __ASSUME_PREADV
+# undef PREADV
+# define PREADV static internal_function PREADV_REPLACEMENT
+# include <sysdeps/posix/preadv.c>
+#endif
diff --git a/sysdeps/unix/sysv/linux/preadv64.c b/sysdeps/unix/sysv/linux/preadv64.c
new file mode 100644
index 0000000000..739df00257
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/preadv64.c
@@ -0,0 +1,6 @@
+#define PREADV preadv64
+#define PREADV_REPLACEMENT __atomic_preadv64_replacement
+#define PREAD __pread64
+#define OFF_T off64_t
+
+#include "preadv.c"
diff --git a/sysdeps/unix/sysv/linux/pwritev.c b/sysdeps/unix/sysv/linux/pwritev.c
new file mode 100644
index 0000000000..df430ffe46
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/pwritev.c
@@ -0,0 +1,88 @@
+/* Copyright (C) 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. */
+
+#include <errno.h>
+#include <stddef.h>
+#include <sys/param.h>
+#if __WORDSIZE == 64 && !defined PWRITEV
+/* Hide the pwritev64 declaration. */
+# define pwritev64 __redirect_pwritev64
+#endif
+#include <sys/uio.h>
+
+#include <sysdep-cancel.h>
+#include <sys/syscall.h>
+#include <kernel-features.h>
+
+#ifndef PWRITEV
+# define PWRITEV pwritev
+# define PWRITEV_REPLACEMENT __atomic_pwritev_replacement
+# define PWRITE __pwrite
+# define OFF_T off_t
+#endif
+
+static ssize_t PWRITEV_REPLACEMENT (int, __const struct iovec *,
+ int, OFF_T) internal_function;
+
+
+ssize_t
+PWRITEV (fd, vector, count, offset)
+ int fd;
+ const struct iovec *vector;
+ int count;
+ OFF_T offset;
+{
+#ifdef __NR_pwritev
+ ssize_t result;
+
+ if (SINGLE_THREAD_P)
+ result = INLINE_SYSCALL (pwritev, 5, fd, vector, count, offset >> 32,
+ offset & 0xffffffff);
+ else
+ {
+ int oldtype = LIBC_CANCEL_ASYNC ();
+
+ result = INLINE_SYSCALL (pwritev, 5, fd, vector, count, offset >> 32,
+ offset & 0xffffffff);
+
+ LIBC_CANCEL_RESET (oldtype);
+ }
+# ifdef __ASSUME_PWRITEV
+ return result;
+# endif
+#endif
+
+#ifndef __ASSUME_PWRITEV
+# ifdef __NR_pwritev
+ if (result >= 0 || errno != ENOSYS)
+ return result;
+# endif
+
+ return PWRITEV_REPLACEMENT (fd, vector, count, offset);
+#endif
+}
+#if __WORDSIZE == 64 && defined pwritev64
+# undef pwritev64
+strong_alias (pwritev, pwritev64)
+#endif
+
+#ifndef __ASSUME_PWRITEV
+# undef PWRITEV
+# define PWRITEV static internal_function PWRITEV_REPLACEMENT
+# include <sysdeps/posix/pwritev.c>
+#endif
diff --git a/sysdeps/unix/sysv/linux/pwritev64.c b/sysdeps/unix/sysv/linux/pwritev64.c
new file mode 100644
index 0000000000..1e8168f103
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/pwritev64.c
@@ -0,0 +1,6 @@
+#define PWRITEV pwritev64
+#define PWRITEV_REPLACEMENT __atomic_pwritev64_replacement
+#define PWRITE __pwrite64
+#define OFF_T off64_t
+
+#include "pwritev.c"
diff --git a/sysdeps/unix/sysv/linux/readv.c b/sysdeps/unix/sysv/linux/readv.c
index 250c00a075..bff4a3ff74 100644
--- a/sysdeps/unix/sysv/linux/readv.c
+++ b/sysdeps/unix/sysv/linux/readv.c
@@ -1,5 +1,5 @@
/* readv supports all Linux kernels >= 2.0.
- Copyright (C) 1997,1998,2000,2002,2003 Free Software Foundation, Inc.
+ Copyright (C) 1997,1998,2000,2002,2003,2009 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
@@ -25,6 +25,7 @@
#include <sysdep-cancel.h>
#include <sys/syscall.h>
#include <bp-checks.h>
+#include <kernel-features.h>
static ssize_t __atomic_readv_replacement (int, __const struct iovec *,
int) internal_function;
@@ -36,41 +37,38 @@ static ssize_t __atomic_readv_replacement (int, __const struct iovec *,
#endif
-/* We should deal with kernel which have a smaller UIO_FASTIOV as well
- as a very big count. */
-static ssize_t
-do_readv (int fd, const struct iovec *vector, int count)
-{
- ssize_t bytes_read;
-
- bytes_read = INLINE_SYSCALL (readv, 3, fd, CHECK_N (vector, count), count);
-
- if (bytes_read >= 0 || errno != EINVAL || count <= UIO_FASTIOV)
- return bytes_read;
-
- return __atomic_readv_replacement (fd, vector, count);
-}
-
-
ssize_t
__libc_readv (fd, vector, count)
int fd;
const struct iovec *vector;
int count;
{
- if (SINGLE_THREAD_P)
- return do_readv (fd, vector, count);
+ ssize_t result;
- int oldtype = LIBC_CANCEL_ASYNC ();
+ if (SINGLE_THREAD_P)
+ result = INLINE_SYSCALL (readv, 3, fd, CHECK_N (vector, count), count);
+ else
+ {
+ int oldtype = LIBC_CANCEL_ASYNC ();
- int result = do_readv (fd, vector, count);
+ result = INLINE_SYSCALL (readv, 3, fd, CHECK_N (vector, count), count);
- LIBC_CANCEL_RESET (oldtype);
+ LIBC_CANCEL_RESET (oldtype);
+ }
+#ifdef __ASSUME_COMPLETE_READV_WRITEV
return result;
+#else
+ if (result >= 0 || errno != EINVAL || count <= UIO_FASTIOV)
+ return result;
+
+ return __atomic_readv_replacement (fd, vector, count);
+#endif
}
strong_alias (__libc_readv, __readv)
weak_alias (__libc_readv, readv)
-#define __libc_readv static internal_function __atomic_readv_replacement
-#include <sysdeps/posix/readv.c>
+#ifndef __ASSUME_COMPLETE_READV_WRITEV
+# define __libc_readv static internal_function __atomic_readv_replacement
+# include <sysdeps/posix/readv.c>
+#endif
diff --git a/sysdeps/unix/sysv/linux/sys/eventfd.h b/sysdeps/unix/sysv/linux/sys/eventfd.h
index 7c6cf7196d..d942df4bf9 100644
--- a/sysdeps/unix/sysv/linux/sys/eventfd.h
+++ b/sysdeps/unix/sysv/linux/sys/eventfd.h
@@ -28,6 +28,8 @@ 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
diff --git a/sysdeps/unix/sysv/linux/wordsize-64/preadv64.c b/sysdeps/unix/sysv/linux/wordsize-64/preadv64.c
new file mode 100644
index 0000000000..fd9320cfc7
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/wordsize-64/preadv64.c
@@ -0,0 +1 @@
+/* Empty since the preadv syscall is equivalent. */
diff --git a/sysdeps/unix/sysv/linux/wordsize-64/pwritev64.c b/sysdeps/unix/sysv/linux/wordsize-64/pwritev64.c
new file mode 100644
index 0000000000..8b72a2928b
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/wordsize-64/pwritev64.c
@@ -0,0 +1 @@
+/* Empty since the pwritev syscall is equivalent. */
diff --git a/sysdeps/unix/sysv/linux/writev.c b/sysdeps/unix/sysv/linux/writev.c
index 05978665fa..55e915d34d 100644
--- a/sysdeps/unix/sysv/linux/writev.c
+++ b/sysdeps/unix/sysv/linux/writev.c
@@ -1,5 +1,5 @@
/* writev supports all Linux kernels >= 2.0.
- Copyright (C) 1997, 1998, 2000, 2002, 2003 Free Software Foundation, Inc.
+ Copyright (C) 1997,1998,2000,2002,2003,2009 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
@@ -25,6 +25,7 @@
#include <sysdep-cancel.h>
#include <sys/syscall.h>
#include <bp-checks.h>
+#include <kernel-features.h>
static ssize_t __atomic_writev_replacement (int, const struct iovec *,
int) internal_function;
@@ -36,40 +37,38 @@ static ssize_t __atomic_writev_replacement (int, const struct iovec *,
#endif
-/* We should deal with kernel which have a smaller UIO_FASTIOV as well
- as a very big count. */
-static ssize_t
-do_writev (int fd, const struct iovec *vector, int count)
-{
- ssize_t bytes_written;
-
- bytes_written = INLINE_SYSCALL (writev, 3, fd, CHECK_N (vector, count), count);
-
- if (bytes_written >= 0 || errno != EINVAL || count <= UIO_FASTIOV)
- return bytes_written;
-
- return __atomic_writev_replacement (fd, vector, count);
-}
-
ssize_t
__libc_writev (fd, vector, count)
int fd;
const struct iovec *vector;
int count;
{
- if (SINGLE_THREAD_P)
- return do_writev (fd, vector, count);
+ ssize_t result;
- int oldtype = LIBC_CANCEL_ASYNC ();
+ if (SINGLE_THREAD_P)
+ result = INLINE_SYSCALL (writev, 3, fd, CHECK_N (vector, count), count);
+ else
+ {
+ int oldtype = LIBC_CANCEL_ASYNC ();
- ssize_t result = do_writev (fd, vector, count);
+ result = INLINE_SYSCALL (writev, 3, fd, CHECK_N (vector, count), count);
- LIBC_CANCEL_RESET (oldtype);
+ LIBC_CANCEL_RESET (oldtype);
+ }
+#ifdef __ASSUME_COMPLETE_READV_WRITEV
return result;
+#else
+ if (result >= 0 || errno != EINVAL || count <= UIO_FASTIOV)
+ return result;
+
+ return __atomic_writev_replacement (fd, vector, count);
+#endif
}
strong_alias (__libc_writev, __writev)
weak_alias (__libc_writev, writev)
-#define __libc_writev static internal_function __atomic_writev_replacement
-#include <sysdeps/posix/writev.c>
+#ifndef __ASSUME_COMPLETE_READV_WRITEV
+# define __libc_writev static internal_function __atomic_writev_replacement
+# include <sysdeps/posix/writev.c>
+#endif
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