time: Introduce function to check correctness of nanoseconds value

The valid_nanoseconds () static inline function has been introduced to
check if nanoseconds value is in the correct range - greater or equal to
zero and less than 1000000000.

The explicit #include <time.h> has been added to files where it was
missing.

The __syscall_slong_t type for ns has been used to avoid issues on x32.

Tested with:
- scripts/build-many-glibcs.py
- make PARALLELMFLAGS="-j12" && make PARALLELMFLAGS="-j12" xcheck on x86_64

7 files changed, 15 insertions, 12 deletions

diff --git a/nptl/lll_timedlock_wait.c b/nptl/lll_timedlock_wait.c
index 03060e874b..cd3cc3d371 100644
--- a/nptl/lll_timedlock_wait.c
+++ b/nptl/lll_timedlock_wait.c
@@ -21,6 +21,7 @@
 #include <errno.h>
 #include <lowlevellock.h>
 #include <sys/time.h>
+#include <time.h>
 
 
 int
@@ -28,7 +29,7 @@ __lll_clocklock_wait (int *futex, clockid_t clockid,
 		      const struct timespec *abstime, int private)
 {
   /* Reject invalid timeouts.  */
-  if (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000)
+  if (! valid_nanoseconds (abstime->tv_nsec))
     return EINVAL;
 
   /* Try locking.  */
diff --git a/nptl/pthread_cond_wait.c b/nptl/pthread_cond_wait.c
index bacae09c02..cf372bc017 100644
--- a/nptl/pthread_cond_wait.c
+++ b/nptl/pthread_cond_wait.c
@@ -645,7 +645,7 @@ __pthread_cond_timedwait (pthread_cond_t *cond, pthread_mutex_t *mutex,
 {
   /* Check parameter validity.  This should also tell the compiler that
      it can assume that abstime is not NULL.  */
-  if (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000)
+  if (! valid_nanoseconds (abstime->tv_nsec))
     return EINVAL;
 
   /* Relaxed MO is suffice because clock ID bit is only modified
@@ -668,7 +668,7 @@ __pthread_cond_clockwait (pthread_cond_t *cond, pthread_mutex_t *mutex,
 {
   /* Check parameter validity.  This should also tell the compiler that
      it can assume that abstime is not NULL.  */
-  if (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000)
+  if (! valid_nanoseconds (abstime->tv_nsec))
     return EINVAL;
 
   if (!futex_abstimed_supported_clockid (clockid))
diff --git a/nptl/pthread_join_common.c b/nptl/pthread_join_common.c
index 9545ae4bd3..8b55c380e9 100644
--- a/nptl/pthread_join_common.c
+++ b/nptl/pthread_join_common.c
@@ -19,6 +19,7 @@
 #include "pthreadP.h"
 #include <atomic.h>
 #include <stap-probe.h>
+#include <time.h>
 
 static void
 cleanup (void *arg)
@@ -40,7 +41,7 @@ timedwait_tid (pid_t *tidp, const struct timespec *abstime)
 {
   pid_t tid;
 
-  if (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000)
+  if (! valid_nanoseconds (abstime->tv_nsec))
     return EINVAL;
 
   /* Repeat until thread terminated.  */
diff --git a/nptl/pthread_mutex_timedlock.c b/nptl/pthread_mutex_timedlock.c
index a0ce044dd4..c9bb3b9176 100644
--- a/nptl/pthread_mutex_timedlock.c
+++ b/nptl/pthread_mutex_timedlock.c
@@ -235,7 +235,7 @@ __pthread_mutex_clocklock_common (pthread_mutex_t *mutex,
 	    }
 
 	  /* We are about to block; check whether the timeout is invalid.  */
-	  if (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000)
+	  if (! valid_nanoseconds (abstime->tv_nsec))
 	    return EINVAL;
 	  /* Work around the fact that the kernel rejects negative timeout
 	     values despite them being valid.  */
@@ -561,7 +561,7 @@ __pthread_mutex_clocklock_common (pthread_mutex_t *mutex,
 		if (oldval != ceilval)
 		  {
 		    /* Reject invalid timeouts.  */
-		    if (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000)
+		    if (! valid_nanoseconds (abstime->tv_nsec))
 		      {
 			result = EINVAL;
 			goto failpp;
diff --git a/nptl/pthread_rwlock_common.c b/nptl/pthread_rwlock_common.c
index 7070b9c2c8..9c05e03a09 100644
--- a/nptl/pthread_rwlock_common.c
+++ b/nptl/pthread_rwlock_common.c
@@ -24,6 +24,7 @@
 #include <stap-probe.h>
 #include <atomic.h>
 #include <futex-internal.h>
+#include <time.h>
 
 
 /* A reader--writer lock that fulfills the POSIX requirements (but operations
@@ -290,8 +291,7 @@ __pthread_rwlock_rdlock_full (pthread_rwlock_t *rwlock,
      if the lock can be immediately acquired" (i.e., we need not but may check
      it).  */
   if (abstime && __glibc_unlikely (!futex_abstimed_supported_clockid (clockid)
-      || abstime->tv_nsec >= 1000000000
-      || abstime->tv_nsec < 0))
+      || ! valid_nanoseconds (abstime->tv_nsec)))
     return EINVAL;
 
   /* Make sure we are not holding the rwlock as a writer.  This is a deadlock
@@ -596,8 +596,7 @@ __pthread_rwlock_wrlock_full (pthread_rwlock_t *rwlock,
      if the lock can be immediately acquired" (i.e., we need not but may check
      it).  */
   if (abstime && __glibc_unlikely (!futex_abstimed_supported_clockid (clockid)
-      || abstime->tv_nsec >= 1000000000
-      || abstime->tv_nsec < 0))
+      || ! valid_nanoseconds (abstime->tv_nsec)))
     return EINVAL;
 
   /* Make sure we are not holding the rwlock as a writer.  This is a deadlock
diff --git a/nptl/sem_clockwait.c b/nptl/sem_clockwait.c
index 9ed98c4cce..21628df524 100644
--- a/nptl/sem_clockwait.c
+++ b/nptl/sem_clockwait.c
@@ -18,6 +18,7 @@
    License along with the GNU C Library; if not, see
    <https://www.gnu.org/licenses/>.  */
 
+#include <time.h>
 #include "sem_waitcommon.c"
 
 int
@@ -32,7 +33,7 @@ sem_clockwait (sem_t *sem, clockid_t clockid,
       return -1;
     }
 
-  if (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000)
+  if (! valid_nanoseconds (abstime->tv_nsec))
     {
       __set_errno (EINVAL);
       return -1;
diff --git a/nptl/sem_timedwait.c b/nptl/sem_timedwait.c
index fbb50a5fc8..a3fbe8998b 100644
--- a/nptl/sem_timedwait.c
+++ b/nptl/sem_timedwait.c
@@ -17,6 +17,7 @@
    License along with the GNU C Library; if not, see
    <https://www.gnu.org/licenses/>.  */
 
+#include <time.h>
 #include "sem_waitcommon.c"
 
 /* This is in a separate file because because sem_timedwait is only provided
@@ -24,7 +25,7 @@
 int
 sem_timedwait (sem_t *sem, const struct timespec *abstime)
 {
-  if (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000)
+  if (! valid_nanoseconds (abstime->tv_nsec))
     {
       __set_errno (EINVAL);
       return -1;