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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.
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Copyright (C) 2017 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <limits.h>
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#include <support/check.h>
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static void
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do_test_with_invalid_flags (void)
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{
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#define RWF_SUPPORTED (RWF_HIPRI | RWF_DSYNC | RWF_SYNC | RWF_NOWAIT)
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/* Set the next bit from the mask of all supported flags. */
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int invalid_flag = __builtin_clz (RWF_SUPPORTED);
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invalid_flag = 0x1 << ((sizeof (int) * CHAR_BIT) - invalid_flag);
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char buf[32];
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const struct iovec vec = { .iov_base = buf, .iov_len = sizeof (buf) };
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if (preadv2 (temp_fd, &vec, 1, 0, invalid_flag) != -1)
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FAIL_EXIT1 ("preadv2 did not fail with an invalid flag");
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if (errno != ENOTSUP)
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FAIL_EXIT1 ("preadv2 failure did not set errno to ENOTSUP (%d)", errno);
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/* This might fail for compat syscall (32 bits running on 64 bits kernel)
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due a kernel issue. */
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if (pwritev2 (temp_fd, &vec, 1, 0, invalid_flag) != -1)
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FAIL_EXIT1 ("pwritev2 did not fail with an invalid flag");
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if (errno != ENOTSUP)
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FAIL_EXIT1 ("pwritev2 failure did not set errno to ENOTSUP (%d)", errno);
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}
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