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authorLukasz Majewski <lukma@denx.de>2021-01-18 16:53:26 +0100
committerLukasz Majewski <lukma@denx.de>2021-03-08 22:41:28 +0100
commita1565550075255370f8e6c88dc9c4ad3fd7281ab (patch)
treee9e1f2ce1d50cca15135faea0aa9a7f20fc7e33a /support
parent496e36f2251f28961ce269548b5f3adb6546ef01 (diff)
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support: Provide xclock_settime test helper function
The xclock_settime is a wrapper function on the clock_settime syscall to be used in the test code. It checks if the GLIBC_TEST_ALLOW_TIME_SETTING env variable is defined in the environment in which test is executed. If it is not - the test ends as unsupported. Otherwise, the clock-settime is executed and return value is assessed. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Diffstat (limited to 'support')
-rw-r--r--support/Makefile1
-rw-r--r--support/xclock_settime.c34
-rw-r--r--support/xtime.h5
3 files changed, 40 insertions, 0 deletions
diff --git a/support/Makefile b/support/Makefile
index bb9889e..8d63fbd 100644
--- a/support/Makefile
+++ b/support/Makefile
@@ -90,6 +90,7 @@ libsupport-routines = \
xchdir \
xchroot \
xclock_gettime \
+ xclock_settime \
xclose \
xchmod \
xconnect \
diff --git a/support/xclock_settime.c b/support/xclock_settime.c
new file mode 100644
index 0000000..25e717d
--- /dev/null
+++ b/support/xclock_settime.c
@@ -0,0 +1,34 @@
+/* clock_settime with error checking.
+ 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 <stdlib.h>
+#include <support/check.h>
+#include <support/xtime.h>
+
+void
+xclock_settime (clockid_t clockid,
+ const struct timespec *ts)
+{
+ if (getenv (SETTIME_ENV_NAME) == NULL)
+ FAIL_UNSUPPORTED ("clock_settime is executed only when "\
+ SETTIME_ENV_NAME" is set\n");
+
+ int ret = clock_settime (clockid, ts);
+ if (ret < 0)
+ FAIL_EXIT1 ("clock_settime (%d): %m", clockid);
+}
diff --git a/support/xtime.h b/support/xtime.h
index 2482837..b4ac3b5 100644
--- a/support/xtime.h
+++ b/support/xtime.h
@@ -23,10 +23,15 @@
__BEGIN_DECLS
+/* Name of the env variable, which indicates if it is possible to
+ adjust time on target machine. */
+#define SETTIME_ENV_NAME "GLIBC_TEST_ALLOW_TIME_SETTING"
+
/* The following functions call the corresponding libc functions and
terminate the process on error. */
void xclock_gettime (clockid_t clock, struct timespec *ts);
+void xclock_settime (clockid_t clock, const struct timespec *ts);
/* This helper can often simplify tests by avoiding an explicit
variable declaration or allowing that declaration to be const. */