mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-22 21:10:07 +00:00
94070f86c0
Linux 4.12 (b745fafaf70c0a98a2e1e7ac8cb14542889ceb0e) adds a new
p{read,write}v2 flag RWF_NOWAIT. This patch adds it for linux
uio-ext.h header.
Checked on x86_64-linux-gnu (on a 4.10 kernel).
[BZ #21738]
* manual/llio.texi (RWF_NOWAIT): New item.
* misc/tst-preadvwritev2-common.c (do_test_with_invalid_flags):
Add RWF_NOWAIT check.
* sysdeps/unix/sysv/linux/bits/uio-ext.h (RWF_NOWAIT): New flag.
44 lines
1.8 KiB
C
44 lines
1.8 KiB
C
/* Common function for preadv2 and pwritev2 tests.
|
|
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 <limits.h>
|
|
#include <support/check.h>
|
|
|
|
static void
|
|
do_test_with_invalid_flags (void)
|
|
{
|
|
#define RWF_SUPPORTED (RWF_HIPRI | RWF_DSYNC | RWF_SYNC | RWF_NOWAIT)
|
|
/* Set the next bit from the mask of all supported flags. */
|
|
int invalid_flag = __builtin_clz (RWF_SUPPORTED);
|
|
invalid_flag = 0x1 << ((sizeof (int) * CHAR_BIT) - invalid_flag);
|
|
|
|
char buf[32];
|
|
const struct iovec vec = { .iov_base = buf, .iov_len = sizeof (buf) };
|
|
if (preadv2 (temp_fd, &vec, 1, 0, invalid_flag) != -1)
|
|
FAIL_EXIT1 ("preadv2 did not fail with an invalid flag");
|
|
if (errno != ENOTSUP)
|
|
FAIL_EXIT1 ("preadv2 failure did not set errno to ENOTSUP (%d)", errno);
|
|
|
|
/* This might fail for compat syscall (32 bits running on 64 bits kernel)
|
|
due a kernel issue. */
|
|
if (pwritev2 (temp_fd, &vec, 1, 0, invalid_flag) != -1)
|
|
FAIL_EXIT1 ("pwritev2 did not fail with an invalid flag");
|
|
if (errno != ENOTSUP)
|
|
FAIL_EXIT1 ("pwritev2 failure did not set errno to ENOTSUP (%d)", errno);
|
|
}
|