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authorAdhemerval Zanella <adhemerval.zanella@linaro.org>2015-11-03 10:04:25 -0200
committerAdhemerval Zanella <adhemerval.zanella@linaro.org>2017-05-11 17:27:30 -0300
commitdfaaee33ba68372e374c14ec05fc8a76bdccdceb (patch)
treeb4883a9ffc14d325b91854b46dd5fa5d16b60857
parentf6a191a6ee0313d61dffa70d86b033c5a598f907 (diff)
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Consolidate Linux write syscall
This patch consolidates the write Linux syscall implementation on sysdeps/unix/sysv/linux/write.c. Checked on i686-linux-gnu, x86_64-linux-gnu, x86_64-linux-gnux32, arch64-linux-gnu, arm-linux-gnueabihf, and powerpc64le-linux-gnu. * include/unistd.h (write): Add hidden proto. * io/Makefile (CFLAGS-write.c): New rule. * nptl/Makefile (CFLAGS-write.c): Likewise. * sysdeps/unix/sysv/linux/write.c: New file.
-rw-r--r--ChangeLog5
-rw-r--r--include/unistd.h1
-rw-r--r--io/Makefile1
-rw-r--r--nptl/Makefile1
-rw-r--r--sysdeps/unix/sysv/linux/write.c33
5 files changed, 41 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog
index 1101834..1919346 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,10 @@
2016-05-10 Adhemerval Zanella <adhemerval.zanella@linaro.org>
+ * include/unistd.h (write): Add hidden proto.
+ * io/Makefile (CFLAGS-write.c): New define.
+ * nptl/Makefile (CFLAGS-write.c): Likewise.
+ * sysdeps/unix/sysv/linux/write.c: New file.
+
[BZ #21428]
* include/unistd.h (read): Add hidden proto.
* io/Makefile (CFLAGS-read.c): New define.
diff --git a/include/unistd.h b/include/unistd.h
index 01556d3..0cdf06e 100644
--- a/include/unistd.h
+++ b/include/unistd.h
@@ -56,6 +56,7 @@ libc_hidden_proto (__libc_read)
libc_hidden_proto (read)
extern ssize_t __libc_write (int __fd, const void *__buf, size_t __n);
libc_hidden_proto (__libc_write)
+libc_hidden_proto (write)
extern int __pipe (int __pipedes[2]);
libc_hidden_proto (__pipe)
extern int __pipe2 (int __pipedes[2], int __flags);
diff --git a/io/Makefile b/io/Makefile
index db14c0d..16365e5 100644
--- a/io/Makefile
+++ b/io/Makefile
@@ -101,6 +101,7 @@ CFLAGS-fallocate.c = -fexceptions
CFLAGS-fallocate64.c = -fexceptions
CFLAGS-sync_file_range.c = -fexceptions
CFLAGS-read.c = -fexceptions
+CFLAGS-write.c = -fexceptions
CFLAGS-test-stat.c = -D_FILE_OFFSET_BITS=64 -D_LARGEFILE64_SOURCE
CFLAGS-test-lfs.c = -D_LARGEFILE64_SOURCE
diff --git a/nptl/Makefile b/nptl/Makefile
index faabd45..5b34b5c 100644
--- a/nptl/Makefile
+++ b/nptl/Makefile
@@ -215,6 +215,7 @@ CFLAGS-recvmsg.c = -fexceptions -fasynchronous-unwind-tables
CFLAGS-sendmsg.c = -fexceptions -fasynchronous-unwind-tables
CFLAGS-close.c = -fexceptions -fasynchronous-unwind-tables
CFLAGS-read.c = -fexceptions -fasynchronous-unwind-tables
+CFLAGS-write.c = -fexceptions -fasynchronous-unwind-tables
CFLAGS-pt-system.c = -fexceptions
diff --git a/sysdeps/unix/sysv/linux/write.c b/sysdeps/unix/sysv/linux/write.c
new file mode 100644
index 0000000..d495145
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/write.c
@@ -0,0 +1,33 @@
+/* Linux write syscall implementation.
+ Copyright (C) 2017 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, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <unistd.h>
+#include <sysdep-cancel.h>
+
+/* Write NBYTES of BUF to FD. Return the number written, or -1. */
+ssize_t
+__libc_write (int fd, const void *buf, size_t nbytes)
+{
+ return SYSCALL_CANCEL (write, fd, buf, nbytes);
+}
+libc_hidden_def (__libc_write)
+
+weak_alias (__libc_write, __write)
+libc_hidden_weak (__write)
+weak_alias (__libc_write, write)
+libc_hidden_weak (write)