glibc/posix/tst-preadwrite.c
H.J. Lu 3bbee82a56 Test p{read,write}64 with offset > 4GB
Test p{read,write}64 with offset > 4GB.  Since it is not an error for a
successful pread/pwrite call to transfer fewer bytes than requested, we
should check if the return value is -1.   No need to close and unlink
temporary file, which is handled by test-skeleton.c.

	[BZ #20350]
	* posix/tst-preadwrite.c: Renamed to ...
	* posix/tst-preadwrite-common.c: This.
	(PREAD): Removed.
	(PWRITE): Likewise.
	(STRINGIFY): Likewise.
	(STRINGIFY2): Likewise.
	(do_prepare): Make it static and remove function arguments.
	(do_test): Likewise.
	(PREPARE): Updated.
	(TEST_FUNCTION): New.
	(name): Make it static.
	(fd): Likewise.
	(do_prepare): Use create_temp_file.
	(do_test): Renamed to ...
	(do_test_with_offset): This.  Make it static and accept offset.
	Properly check return value of PWRITE and PREAD.  Return bytes
	read.  Don't close fd nor unlink name.
	* posix/tst-preadwrite.c: Rewrite.
	* posix/tst-preadwrite64.c: Likewise.
2016-07-12 08:29:17 -07:00

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C

/* Tests for pread and pwrite.
Copyright (C) 1998-2016 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 "tst-preadwrite-common.c"
static int
do_test (void)
{
return do_test_with_offset (0) == -1;
}