diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/tst-clock_gettime-clobber.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/tst-clock_gettime-clobber.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/tst-clock_gettime-clobber.c b/sysdeps/unix/sysv/linux/tst-clock_gettime-clobber.c new file mode 100644 index 0000000000..81a32bd15a --- /dev/null +++ b/sysdeps/unix/sysv/linux/tst-clock_gettime-clobber.c @@ -0,0 +1,57 @@ +/* Check that clock_gettime does not clobber errno on success. + Copyright (C) 2021 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 <time.h> +#include <support/check.h> +#include <stdio.h> + +static void +test_clock (clockid_t clk) +{ + printf ("info: testing clock: %d\n", (int) clk); + + for (int original_errno = 0; original_errno < 2; ++original_errno) + { + errno = original_errno; + struct timespec ts; + if (clock_gettime (clk, &ts) == 0) + TEST_COMPARE (errno, original_errno); + } +} + +static int +do_test (void) +{ + test_clock (CLOCK_BOOTTIME); + test_clock (CLOCK_BOOTTIME_ALARM); + test_clock (CLOCK_MONOTONIC); + test_clock (CLOCK_MONOTONIC_COARSE); + test_clock (CLOCK_MONOTONIC_RAW); + test_clock (CLOCK_PROCESS_CPUTIME_ID); + test_clock (CLOCK_REALTIME); + test_clock (CLOCK_REALTIME_ALARM); + test_clock (CLOCK_REALTIME_COARSE); +#ifdef CLOCK_TAI + test_clock (CLOCK_TAI); +#endif + test_clock (CLOCK_THREAD_CPUTIME_ID); + return 0; +} + +#include <support/test-driver.c> |