diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/clock_gettime.c')
-rw-r--r-- | sysdeps/unix/sysv/linux/clock_gettime.c | 38 |
1 files changed, 23 insertions, 15 deletions
diff --git a/sysdeps/unix/sysv/linux/clock_gettime.c b/sysdeps/unix/sysv/linux/clock_gettime.c index fe6de68620..74aadbfbd4 100644 --- a/sysdeps/unix/sysv/linux/clock_gettime.c +++ b/sysdeps/unix/sysv/linux/clock_gettime.c @@ -21,10 +21,6 @@ #include <errno.h> #include <time.h> #include "kernel-posix-cpu-timers.h" - -#ifdef HAVE_CLOCK_GETTIME_VSYSCALL -# define HAVE_VSYSCALL -#endif #include <sysdep-vdso.h> #include <shlib-compat.h> @@ -34,22 +30,34 @@ int __clock_gettime64 (clockid_t clock_id, struct __timespec64 *tp) { #ifdef __ASSUME_TIME64_SYSCALLS -# ifndef __NR_clock_gettime64 -# define __NR_clock_gettime64 __NR_clock_gettime -# define __vdso_clock_gettime64 __vdso_clock_gettime + /* 64 bit ABIs or Newer 32-bit ABIs that only support 64-bit time_t. */ +# ifdef __NR_clock_gettime64 + return INLINE_SYSCALL_CALL (clock_gettime64, clock_id, tp); +# else +# ifdef HAVE_CLOCK_GETTIME_VSYSCALL + return INLINE_VSYSCALL (clock_gettime, 2, clock_id, tp); +# else + return INLINE_SYSCALL_CALL (clock_gettime, clock_id, tp); +# endif # endif - return INLINE_VSYSCALL (clock_gettime64, 2, clock_id, tp); #else -# if defined HAVE_CLOCK_GETTIME64_VSYSCALL - int ret64 = INLINE_VSYSCALL (clock_gettime64, 2, clock_id, tp); - if (ret64 == 0 || errno != ENOSYS) - return ret64; + int r; + /* Old 32-bit ABI with possible 64-bit time_t support. */ +# ifdef __NR_clock_gettime64 + r = INLINE_SYSCALL_CALL (clock_gettime64, clock_id, tp); + if (r == 0 || errno != ENOSYS) + return r; # endif + /* Fallback code that uses 32-bit support. */ struct timespec tp32; - int ret = INLINE_VSYSCALL (clock_gettime, 2, clock_id, &tp32); - if (ret == 0) +# ifdef HAVE_CLOCK_GETTIME_VSYSCALL + r = INLINE_VSYSCALL (clock_gettime, 2, clock_id, &tp32); +# else + r = INLINE_SYSCALL_CALL (clock_gettime, clock_id, &tp32); +# endif + if (r == 0) *tp = valid_timespec_to_timespec64 (tp32); - return ret; + return r; #endif } |