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time: Also check for EPERM while trying to clock_settime

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Container management default seccomp filter [1] only accepts
clock_settime if process has also CAP_SYS_TIME.  So also handle
EPERM as well.

Also adapt the test to libsupport and add a proper Copyright header.

Checked on aarch64-linux-gnu.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
This commit is contained in:
Adhemerval Zanella 2023-06-02 14:02:09 -03:00
parent d4963a844d
commit e3622a8f39
1 changed files with 30 additions and 29 deletions
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59
time/tst-clock2.c
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@ -1,43 +1,44 @@
/* Test setting the monotonic clock. */
/* Test setting the monotonic clock.
Copyright (C) 2007-2023 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
<https://www.gnu.org/licenses/>. */
#include <errno.h>
#include <support/check.h>
#include <time.h>
#include <unistd.h>
#if defined CLOCK_MONOTONIC && defined _POSIX_MONOTONIC_CLOCK
# include <errno.h>
# include <stdio.h>
static int
int
do_test (void)
{
#if defined CLOCK_MONOTONIC && defined _POSIX_MONOTONIC_CLOCK
if (sysconf (_SC_MONOTONIC_CLOCK) <= 0)
return 0;
FAIL_UNSUPPORTED ("_SC_MONOTONIC_CLOCK not supported");
struct timespec ts;
if (clock_gettime (CLOCK_MONOTONIC, &ts) != 0)
{
puts ("clock_gettime(CLOCK_MONOTONIC) failed");
return 1;
}
TEST_COMPARE (clock_gettime (CLOCK_MONOTONIC, &ts), 0);
/* Setting the monotonic clock must fail. */
if (clock_settime (CLOCK_MONOTONIC, &ts) != -1)
{
puts ("clock_settime(CLOCK_MONOTONIC) did not fail");
return 1;
}
if (errno != EINVAL)
{
printf ("clock_settime(CLOCK_MONOTONIC) set errno to %d, expected %d\n",
errno, EINVAL);
return 1;
}
return 0;
}
# define TEST_FUNCTION do_test ()
TEST_VERIFY (clock_settime (CLOCK_MONOTONIC, &ts) == -1);
TEST_VERIFY (errno == EINVAL || errno == EPERM);
return 0;
#else
# define TEST_FUNCTION 0
return EXIT_UNSUPPORTED;
#endif
#include "../test-skeleton.c"
}
#include <support/test-driver.c>