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sysdeps/clock_nanosleep: Use clock_nanosleep_time64 if avaliable

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The clock_nanosleep syscall is not supported on newer 32-bit platforms (such
as RV32). To fix this issue let's use clock_nanosleep_time64 if it is
avaliable.
This commit is contained in:
Alistair Francis 2019-06-21 13:00:23 -07:00
parent 31f000a8a6
commit 2e44b10b42
2 changed files with 65 additions and 4 deletions
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8
include/time.h
View File

@ -209,6 +209,14 @@ libc_hidden_proto (__difftime64)
extern double __difftime (time_t time1, time_t time0);
#if __TIMESIZE == 64
# define __clock_nanosleep_time64 __clock_nanosleep
#else
extern int __clock_nanosleep_time64 (clockid_t clock_id,
int flags, const struct __timespec64 *req,
struct __timespec64 *rem);
libc_hidden_proto (__clock_nanosleep_time64)
#endif
/* Use in the clock_* functions. Size of the field representing the
actual clock ID. */

61
sysdeps/unix/sysv/linux/clock_nanosleep.c
View File

@ -16,6 +16,7 @@
<https://www.gnu.org/licenses/>. */
#include <time.h>
#include <kernel-features.h>
#include <errno.h>
#include <sysdep-cancel.h>
@ -26,9 +27,11 @@
/* We can simply use the syscall. The CPU clocks are not supported
with this function. */
int
__clock_nanosleep (clockid_t clock_id, int flags, const struct timespec *req,
struct timespec *rem)
__clock_nanosleep_time64 (clockid_t clock_id, int flags, const struct __timespec64 *req,
struct __timespec64 *rem)
{
int r;
if (clock_id == CLOCK_THREAD_CPUTIME_ID)
return EINVAL;
if (clock_id == CLOCK_PROCESS_CPUTIME_ID)
@ -37,11 +40,61 @@ __clock_nanosleep (clockid_t clock_id, int flags, const struct timespec *req,
/* If the call is interrupted by a signal handler or encounters an error,
it returns a positive value similar to errno. */
INTERNAL_SYSCALL_DECL (err);
int r = INTERNAL_SYSCALL_CANCEL (clock_nanosleep, err, clock_id, flags,
req, rem);
#ifdef __ASSUME_TIME64_SYSCALLS
# ifndef __NR_clock_nanosleep_time64
# define __NR_clock_nanosleep_time64 __NR_clock_nanosleep
# endif
r = INTERNAL_SYSCALL_CANCEL (clock_nanosleep_time64, err, clock_id,
flags, req, rem);
#else
# ifdef __NR_clock_nanosleep_time64
r = INTERNAL_SYSCALL_CANCEL (clock_nanosleep_time64, err, clock_id,
flags, req, rem);
if (r == 0 || errno != ENOSYS)
{
return (INTERNAL_SYSCALL_ERROR_P (r, err)
? INTERNAL_SYSCALL_ERRNO (r, err) : 0);
}
# endif /* __NR_clock_nanosleep_time64 */
struct timespec ts32, tr32;
if (! in_time_t_range (req->tv_sec))
{
__set_errno (EOVERFLOW);
return -1;
}
ts32 = valid_timespec64_to_timespec (*req);
r = INTERNAL_SYSCALL_CANCEL (clock_nanosleep, err, clock_id, flags,
&ts32, &tr32);
if (r == 0 && rem != NULL)
*rem = valid_timespec_to_timespec64 (tr32);
#endif /* __ASSUME_TIME64_SYSCALLS */
return (INTERNAL_SYSCALL_ERROR_P (r, err)
? INTERNAL_SYSCALL_ERRNO (r, err) : 0);
}
#if __TIMESIZE != 64
int
__clock_nanosleep (clockid_t clock_id, int flags, const struct timespec *req,
struct timespec *rem)
{
int r;
struct __timespec64 treq64, trem64;
treq64 = valid_timespec_to_timespec64 (*req);
r = __clock_nanosleep_time64 (clock_id, flags, &treq64, &trem64);
if (r == 0 && rem != NULL)
*rem = valid_timespec64_to_timespec (trem64);
return r;
}
#endif
libc_hidden_def (__clock_nanosleep)
versioned_symbol (libc, __clock_nanosleep, clock_nanosleep, GLIBC_2_17);
/* clock_nanosleep moved to libc in version 2.17;