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

1 files changed, 2 insertions, 1 deletions

diff --git a/sysdeps/htl/sem-timedwait.c b/sysdeps/htl/sem-timedwait.c
index e2eeff4b8a..dfb0cb99d3 100644
--- a/sysdeps/htl/sem-timedwait.c
+++ b/sysdeps/htl/sem-timedwait.c
@@ -19,6 +19,7 @@
 #include <semaphore.h>
 #include <errno.h>
 #include <assert.h>
+#include <time.h>
 
 #include <pt-internal.h>
 
@@ -39,7 +40,7 @@ __sem_timedwait_internal (sem_t *restrict sem,
       return 0;
     }
 
-  if (timeout != NULL && (timeout->tv_nsec < 0 || timeout->tv_nsec >= 1000000000))
+  if (timeout != NULL && ! valid_nanoseconds (timeout->tv_nsec))
     {
       errno = EINVAL;
       return -1;