Patch by Vasilis Kaoutsis: select() and pselect() set errno correctly now.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22499 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/system/libroot/posix/sys/select.c

@@ -1,22 +1,34 @@
 /* 
-** Copyright 2002-2004, Axel Dörfler, [email protected]. All rights reserved.
+ * Copyright 2002-2007, Axel Dörfler, [email protected]. All rights reserved.
-** Distributed under the terms of the OpenBeOS License.
+ * Distributed under the terms of the OpenBeOS License.
  */
 
 
+#include <errno.h>
 #include <sys/select.h>
 #include <syscalls.h>
 
 
+#define RETURN_AND_SET_ERRNO(err) \
+	if (err < 0) { \
+		errno = err; \
+		return -1; \
+	} \
+	return err;
+
+
 int 
 pselect(int numBits, struct fd_set *readBits, struct fd_set *writeBits,
 	struct fd_set *errorBits, const struct timespec *tv, const sigset_t *sigMask)
 {
+	int status;
 	bigtime_t timeout = -1LL;
 	if (tv)
 		timeout = tv->tv_sec * 1000000LL + tv->tv_nsec / 1000LL;
 
-	return _kern_select(numBits, readBits, writeBits, errorBits, timeout, sigMask);
+	status = _kern_select(numBits, readBits, writeBits, errorBits, timeout, sigMask);
+
+	RETURN_AND_SET_ERRNO(status);
 }
 
 
@@ -24,10 +36,12 @@ int
 select(int numBits, struct fd_set *readBits, struct fd_set *writeBits,
 	struct fd_set *errorBits, struct timeval *tv)
 {
+	int status;
 	bigtime_t timeout = -1LL;
 	if (tv)
 		timeout = tv->tv_sec * 1000000LL + tv->tv_usec;
 
-	return _kern_select(numBits, readBits, writeBits, errorBits, timeout, NULL);
+	status = _kern_select(numBits, readBits, writeBits, errorBits, timeout, NULL);
-}
 
+	RETURN_AND_SET_ERRNO(status);
+}