From f5421e64f834cd246f6e0bfca1cc10b16cc64b58 Mon Sep 17 00:00:00 2001
From: Erik van der Kouwe <erik@minix3.org>
Date: Sun, 16 Aug 2009 12:55:59 +0000
Subject: [PATCH] Nanosleep was implemented twice, removed from _sleep.c

---
 lib/posix/_nanosleep.c | 18 +++++++---
 lib/posix/_sleep.c     | 75 ------------------------------------------
 2 files changed, 14 insertions(+), 79 deletions(-)

diff --git a/lib/posix/_nanosleep.c b/lib/posix/_nanosleep.c
index b687dda48..d926f5056 100644
--- a/lib/posix/_nanosleep.c
+++ b/lib/posix/_nanosleep.c
@@ -1,9 +1,10 @@
-/* nanosleep() - Sleep for a number of nanoseconds. Author: Erik van der Kouwe
- *								  25 July 2009
+/*	nanosleep() - Sleep for a number of seconds.	Author: Erik van der Kouwe
+ *								25 July 2009
  */
 
 #include <lib.h>
 #define nanosleep _nanosleep
+#include <signal.h>
 #include <unistd.h>
 #include <errno.h>
 #include <time.h>
@@ -22,6 +23,15 @@ int nanosleep(const struct timespec *rqtp, struct timespec *rmtp)
 	struct timeval timeout, timestart = { 0, 0 }, timeend;
 	int errno_select, r;
 
+	/* check parameters */
+	if (!rqtp)
+		return EFAULT;
+
+	if (rqtp->tv_sec < 0 || 
+		rqtp->tv_nsec < 0 ||
+		rqtp->tv_nsec >= NSEC_PER_SEC)
+		return EINVAL;
+
 	/* keep track of start time if needed */
 	if (rmtp)
 	{
@@ -50,8 +60,7 @@ int nanosleep(const struct timespec *rqtp, struct timespec *rmtp)
 
 	/* compute remaining time */
 	rmtp->tv_sec = rqtp->tv_sec - (timeend.tv_sec - timestart.tv_sec);
-	rmtp->tv_nsec = rqtp->tv_nsec -
-		(timeend.tv_usec - timestart.tv_usec) * NSEC_PER_USEC;
+	rmtp->tv_nsec = rqtp->tv_nsec - (timeend.tv_usec - timestart.tv_usec) * NSEC_PER_USEC;
 
 	/* bring remaining time into canonical form */
 	while (rmtp->tv_nsec < 0)
@@ -75,3 +84,4 @@ int nanosleep(const struct timespec *rqtp, struct timespec *rmtp)
 
 	return r;
 }
+
diff --git a/lib/posix/_sleep.c b/lib/posix/_sleep.c
index 21dfc633c..67a328ef1 100755
--- a/lib/posix/_sleep.c
+++ b/lib/posix/_sleep.c
@@ -5,7 +5,6 @@
 
 #include <lib.h>
 #define sleep _sleep
-#define nanosleep _nanosleep
 #include <signal.h>
 #include <unistd.h>
 #include <errno.h>
@@ -13,80 +12,6 @@
 #include <sys/select.h>
 #include <sys/time.h>
 
-#define MSEC_PER_SEC 1000
-#define USEC_PER_MSEC 1000
-#define NSEC_PER_USEC 1000
-
-#define USEC_PER_SEC (USEC_PER_MSEC * MSEC_PER_SEC)
-#define NSEC_PER_SEC (NSEC_PER_USEC * USEC_PER_SEC)
-
-int nanosleep(const struct timespec *rqtp, struct timespec *rmtp)
-{
-	struct timeval timeout, timestart = { 0, 0 }, timeend;
-	int errno_select, r;
-
-	/* check parameters */
-	if (!rqtp)
-		return EFAULT;
-
-	if (rqtp->tv_sec < 0 || 
-		rqtp->tv_nsec < 0 ||
-		rqtp->tv_nsec >= NSEC_PER_SEC)
-		return EINVAL;
-
-	/* keep track of start time if needed */
-	if (rmtp)
-	{
-		rmtp->tv_sec = 0;
-		rmtp->tv_nsec = 0;
-		if (gettimeofday(&timestart, NULL) < 0)
-			return -1;
-	}
-
-	/* use select to wait */
-	timeout.tv_sec = rqtp->tv_sec;
-	timeout.tv_usec = (rqtp->tv_nsec + NSEC_PER_USEC - 1) / NSEC_PER_USEC;
-	r = select(0, NULL, NULL, NULL, &timeout);
-
-	/* return remaining time only if requested */
-	/* if select succeeded then we slept all time */
-	if (!rmtp || r >= 0)
-		return r;
-
-	/* measure end time; preserve errno */
-	errno_select = errno;
-	if (gettimeofday(&timeend, NULL) < 0)
-		return -1;
-
-	errno = errno_select;
-
-	/* compute remaining time */
-	rmtp->tv_sec = rqtp->tv_sec - (timeend.tv_sec - timestart.tv_sec);
-	rmtp->tv_nsec = rqtp->tv_nsec - (timeend.tv_usec - timestart.tv_usec) * NSEC_PER_USEC;
-
-	/* bring remaining time into canonical form */
-	while (rmtp->tv_nsec < 0)
-	{
-		rmtp->tv_sec -= 1;
-		rmtp->tv_nsec += NSEC_PER_SEC;
-	}
-
-	while (rmtp->tv_nsec > NSEC_PER_SEC)
-	{
-		rmtp->tv_sec += 1;
-		rmtp->tv_nsec -= NSEC_PER_SEC;
-	}
-
-	/* remaining time must not be negative */
-	if (rmtp->tv_sec < 0)
-	{
-		rmtp->tv_sec = 0;
-		rmtp->tv_nsec = 0;
-	}
-
-	return r;
-}
-
 unsigned sleep(unsigned sleep_seconds)
 {
 	struct timespec rqtp, rmtp;
-- 
2.44.0