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authorPeter Kjellerstedt <peter.kjellerstedt@axis.com>2005-04-28 13:11:29 +0000
committerPeter Kjellerstedt <peter.kjellerstedt@axis.com>2005-04-28 13:11:29 +0000
commit65fa68e25d5dc0367622cc230c3f5ac1d2587370 (patch)
tree39de7e74c931d4a4a42ed4543b153e3bca7497cd /libc/sysdeps/linux/common/clock_settime.c
parentc1cc2549bd2bd3266bf9912bb56874f99f77413e (diff)
Added support for clock_getres() and clock_settime() in addition to
the already existing clock_gettime(). In addition they will now use the corresponding system calls if they exists, which resulted in a move to libc/sysdeps/linux/common for clock_gettime.c (it was previously located in libc/misc/time).
Diffstat (limited to 'libc/sysdeps/linux/common/clock_settime.c')
-rw-r--r--libc/sysdeps/linux/common/clock_settime.c53
1 files changed, 53 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/common/clock_settime.c b/libc/sysdeps/linux/common/clock_settime.c
new file mode 100644
index 000000000..40dadc78d
--- /dev/null
+++ b/libc/sysdeps/linux/common/clock_settime.c
@@ -0,0 +1,53 @@
+/*
+ * clock_settime() for uClibc
+ *
+ * Copyright (C) 2005 by Peter Kjellerstedt <pkj@axis.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program 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 Library General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#define _GNU_SOURCE
+#include "syscalls.h"
+#include <time.h>
+#include <sys/time.h>
+
+#ifdef __NR_clock_settime
+_syscall2(int, clock_settime, clockid_t, clock_id, const struct timespec*, tp);
+#else
+int clock_settime(clockid_t clock_id, const struct timespec* tp)
+{
+ struct timeval tv;
+ int retval = -1;
+
+ if (tp->tv_nsec < 0 || tp->tv_nsec >= 1000000000) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ switch (clock_id) {
+ case CLOCK_REALTIME:
+ TIMESPEC_TO_TIMEVAL(&tv, tp);
+ retval = settimeofday(&tv, NULL);
+ break;
+
+ default:
+ errno = EINVAL;
+ break;
+ }
+
+ return retval;
+}
+#endif