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[PATCH 11/13] linux: Consolidate Linux open_by_handle_at syscall
- From: Adhemerval Zanella <adhemerval dot zanella at linaro dot org>
- To: libc-alpha at sourceware dot org
- Date: Fri, 12 May 2017 14:58:12 -0300
- Subject: [PATCH 11/13] linux: Consolidate Linux open_by_handle_at syscall
- Authentication-results: sourceware.org; auth=none
- References: <1494611894-9282-1-git-send-email-adhemerval.zanella@linaro.org>
This patch consolidates the open_by_handle_at Linux syscall generation on
sysdeps/unix/sysv/linux/fdatasync.c. It basically removes it from
architectures auto-generation list.
Checked on i686-linux-gnu, x86_64-linux-gnu, x86_64-linux-gnux32,
arch64-linux-gnu, arm-linux-gnueabihf, powerpc64le-linux-gnu,
sparc64-linux-gnu, and sparcv9-linux-gnu.
* sysdeps/unix/sysv/linux/Makefile (sysdep_routines): Add
open_by_handle_at.
(CFLAGS-open_by_handle_at.c): New flag.
* sysdeps/unix/sysv/linux/open_by_handle_at.c: New file.
* sysdeps/unix/sysv/linux/syscalls.list (open_by_handle_at): New
file.
---
ChangeLog | 7 ++++++
sysdeps/unix/sysv/linux/Makefile | 3 ++-
sysdeps/unix/sysv/linux/open_by_handle_at.c | 37 +++++++++++++++++++++++++++++
sysdeps/unix/sysv/linux/syscalls.list | 1 -
4 files changed, 46 insertions(+), 2 deletions(-)
create mode 100644 sysdeps/unix/sysv/linux/open_by_handle_at.c
diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile
index 578f9e4..9e03a04 100644
--- a/sysdeps/unix/sysv/linux/Makefile
+++ b/sysdeps/unix/sysv/linux/Makefile
@@ -17,7 +17,8 @@ include $(firstword $(wildcard $(sysdirs:=/sysctl.mk)))
sysdep_routines += clone umount umount2 readahead \
setfsuid setfsgid epoll_pwait signalfd \
eventfd eventfd_read eventfd_write prlimit \
- personality epoll_wait tee vmsplice splice
+ personality epoll_wait tee vmsplice splice \
+ open_by_handle_at
CFLAGS-gethostid.c = -fexceptions
CFLAGS-tst-writev.c += "-DARTIFICIAL_LIMIT=(0x80000000-sysconf(_SC_PAGESIZE))"
diff --git a/sysdeps/unix/sysv/linux/open_by_handle_at.c b/sysdeps/unix/sysv/linux/open_by_handle_at.c
new file mode 100644
index 0000000..e69f041
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/open_by_handle_at.c
@@ -0,0 +1,37 @@
+/* Obtain handle for an open file via a handle. Linux 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 <fcntl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sysdep-cancel.h>
+
+int
+open_by_handle_at (int mount_fd, struct file_handle *handle, int flags)
+{
+#ifdef __NR_open_by_handle_at
+ return SYSCALL_CANCEL (open_by_handle_at, mount_fd, handle, flags);
+#else
+ __set_errno (ENOSYS);
+ return -1;
+#endif
+}
+
+#ifndef __NR_open_by_handle_at
+stub_warning (open_by_handle_at)
+#endif
diff --git a/sysdeps/unix/sysv/linux/syscalls.list b/sysdeps/unix/sysv/linux/syscalls.list
index b40825a..a8d1299 100644
--- a/sysdeps/unix/sysv/linux/syscalls.list
+++ b/sysdeps/unix/sysv/linux/syscalls.list
@@ -106,7 +106,6 @@ timerfd_gettime EXTRA timerfd_gettime i:ip timerfd_gettime
fanotify_init EXTRA fanotify_init i:ii fanotify_init
name_to_handle_at EXTRA name_to_handle_at i:isppi name_to_handle_at
-open_by_handle_at EXTRA open_by_handle_at Ci:ipi open_by_handle_at
setns EXTRA setns i:ii setns
--
2.7.4