From patchwork Mon May 8 15:26:49 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Adhemerval Zanella Netto X-Patchwork-Id: 20306 Received: (qmail 55312 invoked by alias); 8 May 2017 15:27:07 -0000 Mailing-List: contact libc-alpha-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: libc-alpha-owner@sourceware.org Delivered-To: mailing list libc-alpha@sourceware.org Received: (qmail 54963 invoked by uid 89); 8 May 2017 15:27:06 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-25.3 required=5.0 tests=AWL, BAYES_00, GIT_PATCH_0, GIT_PATCH_1, GIT_PATCH_2, GIT_PATCH_3, RCVD_IN_DNSWL_LOW, RCVD_IN_SORBS_SPAM, SPF_PASS autolearn=ham version=3.3.2 spammy=HX-Received:10.237.48.66 X-HELO: mail-qt0-f180.google.com X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id:in-reply-to :references; bh=hfK1W/9a279QVCdr0ibeUilW38UkoMXfqW7Vxefn5kw=; b=XJc8HgkIdVrytzB31pcvw1bga+3RflfnnK2zzbs4FBY+XSVzm8cd75ZtYxTogPUWV4 eKmvDwHqvgVepOt94O29yVGjW9mcVhXiaa8F36g6tYsCH/Px14H8mvt/wkEwMNFd7Dxl k4yIfY9N4ZhbSBQXHwD12g9+n3NLUl6Xf9Md1cPTmCUnxOx+NzAqAhv9gKnhzugH6K++ J0fT2eaU9ElTwv4P5dCEpOmsXnWJHoCepE9Pe86vy0SeAP514JE0Wk1omR8QCzTLSp9w 8Cct6ea6J6R6FxB5gNGFHuBqpf2TvbZ01xAXNoacxwnQ1HkI1TMLBy4fluDB2K6Ekvu5 QqJQ== X-Gm-Message-State: AN3rC/4OTr1fsv1c7OrY4/tcQp+UrvbOT+ViMDUqkqXjV25hFXkQoCXl oCpau8eo8z1hOpfsb32VUg== X-Received: by 10.237.48.66 with SMTP id 60mr61430961qte.25.1494257224988; Mon, 08 May 2017 08:27:04 -0700 (PDT) From: Adhemerval Zanella To: libc-alpha@sourceware.org Subject: [PATCH 5/8] Consolidate Linux write syscall Date: Mon, 8 May 2017 12:26:49 -0300 Message-Id: <1494257212-524-5-git-send-email-adhemerval.zanella@linaro.org> In-Reply-To: <1494257212-524-1-git-send-email-adhemerval.zanella@linaro.org> References: <1494257212-524-1-git-send-email-adhemerval.zanella@linaro.org> 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. * io/Makefile (CFLAGS-write.c): New rule. * nptl/Makefile (CFLAGS-write.c): Likewise. * sysdeps/unix/sysv/linux/write.c: New file. --- ChangeLog | 4 ++++ include/unistd.h | 1 + io/Makefile | 1 + nptl/Makefile | 1 + sysdeps/unix/sysv/linux/write.c | 33 +++++++++++++++++++++++++++++++++ 5 files changed, 40 insertions(+) create mode 100644 sysdeps/unix/sysv/linux/write.c 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 + . */ + +#include +#include + +/* 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)