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75a193b761
The adjtime interface allows return the amount of time remaining
from any previous adjustment that has not yet been completed by
passing a NULL as first argument. This was introduced with y2038
support 0308077e3a.
Checked on i686-linux-gnu.
Reviewed-by: Lukasz Majewski <lukma@denx.de>
45 lines
1.3 KiB
C
45 lines
1.3 KiB
C
/* Basic tests for adjtime.
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Copyright (C) 2020 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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<https://www.gnu.org/licenses/>. */
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#include <sys/time.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <support/check.h>
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static int
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do_test (void)
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{
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/* Check if the interface allows getting the amount of time remaining
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from any previous adjustment that has not yet been completed. This
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is a non-privileged function of adjtime. */
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struct timeval tv;
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int r = adjtime (NULL, &tv);
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if (r == -1)
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{
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if (errno == ENOSYS)
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FAIL_UNSUPPORTED ("adjtime unsupported");
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FAIL_EXIT1 ("adjtime (NULL, ...) failed: %m");
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}
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return 0;
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}
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#include <support/test-driver.c>
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