It is not used internally yet.
---
sysdeps/unix/sysv/linux/Makefile | 2 +-
sysdeps/unix/sysv/linux/not-cancel.h | 4 +++
sysdeps/unix/sysv/linux/pwrite64_nocancel.c | 29 +++++++++++++++++++++
3 files changed, 34 insertions(+), 1 deletion(-)
create mode 100644 sysdeps/unix/sysv/linux/pwrite64_nocancel.c
@@ -280,7 +280,7 @@ sysdep_routines += xstatconv internal_statvfs \
close_nocancel fcntl_nocancel \
open_nocancel open64_nocancel \
openat_nocancel openat64_nocancel \
- read_nocancel pread64_nocancel \
+ read_nocancel pread64_nocancel pwrite64_nocancel \
write_nocancel statx_cp stat_t64_cp
sysdep_headers += bits/fcntl-linux.h
@@ -46,6 +46,9 @@ __typeof (__read) __read_nocancel;
/* Non cancellable pread syscall (LFS version). */
__typeof (__pread64) __pread64_nocancel;
+/* Non cancellable pwrite syscall (LFS version). */
+__typeof (__pwrite64) __pwrite64_nocancel;
+
/* Uncancelable write. */
__typeof (__write) __write_nocancel;
@@ -78,6 +81,7 @@ hidden_proto (__openat_nocancel)
hidden_proto (__openat64_nocancel)
hidden_proto (__read_nocancel)
hidden_proto (__pread64_nocancel)
+hidden_proto (__pwrite64_nocancel)
hidden_proto (__write_nocancel)
hidden_proto (__close_nocancel)
hidden_proto (__fcntl64_nocancel)
new file mode 100644
@@ -0,0 +1,29 @@
+/* Linux pwrite64() syscall implementation -- non-cancellable.
+ Copyright (C) 2020 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>
+#include <not-cancel.h>
+
+ssize_t
+__pwrite64_nocancel (int fd, const void *buf, size_t count, off64_t offset)
+{
+ return INLINE_SYSCALL_CALL (pwrite64, fd, buf, count,
+ SYSCALL_LL64_PRW (offset));
+}
+hidden_def (__pwrite64_nocancel)