[23/23] linux: Add time64 support for nanosleep

  It uses __clock_nanosleep64 and adds the __nanosleep64 symbol.

Checked on x86_64-linux-gnu and i686-linux-gnu (on 5.4 and on 4.15
kernel).
---
 include/time.h                            | 19 ++++++---
 sysdeps/unix/sysv/linux/clock_nanosleep.c |  8 ++--
 sysdeps/unix/sysv/linux/nanosleep.c       | 50 +++++++++++++++++++++++
 3 files changed, 68 insertions(+), 9 deletions(-)
 create mode 100644 sysdeps/unix/sysv/linux/nanosleep.c
  

Ping.

On 13/07/2020 14:10, Adhemerval Zanella wrote:
> It uses __clock_nanosleep64 and adds the __nanosleep64 symbol.
> 
> Checked on x86_64-linux-gnu and i686-linux-gnu (on 5.4 and on 4.15
> kernel).
> ---
>  include/time.h                            | 19 ++++++---
>  sysdeps/unix/sysv/linux/clock_nanosleep.c |  8 ++--
>  sysdeps/unix/sysv/linux/nanosleep.c       | 50 +++++++++++++++++++++++
>  3 files changed, 68 insertions(+), 9 deletions(-)
>  create mode 100644 sysdeps/unix/sysv/linux/nanosleep.c
> 
> diff --git a/include/time.h b/include/time.h
> index 936486e206..ad0476be05 100644
> --- a/include/time.h
> +++ b/include/time.h
> @@ -271,6 +271,15 @@ extern struct tm *__tz_convert (__time64_t timer, int use_localtime,
>  extern int __nanosleep (const struct timespec *__requested_time,
>  			struct timespec *__remaining);
>  hidden_proto (__nanosleep)
> +#if __TIMESIZE == 64
> +# define __nanosleep64 __nanosleep
> +#else
> +extern int __nanosleep64 (const struct __timespec64 *__requested_time,
> +			  struct __timespec64 *__remaining);
> +hidden_proto (__nanosleep64)
> +#endif
> +
> +
>  extern int __getdate_r (const char *__string, struct tm *__resbufp)
>    attribute_hidden;
>  
> @@ -294,14 +303,14 @@ libc_hidden_proto (__difftime64)
>  extern double __difftime (time_t time1, time_t time0);
>  
>  #if __TIMESIZE == 64
> -# define __clock_nanosleep_time64 __clock_nanosleep
> +# define __clock_nanosleep64 __clock_nanosleep
>  # define __clock_gettime64 __clock_gettime
>  # define __timespec_get64 __timespec_get
>  #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)
> +extern int __clock_nanosleep64 (clockid_t clock_id,
> +                                int flags, const struct __timespec64 *req,
> +                                struct __timespec64 *rem);
> +libc_hidden_proto (__clock_nanosleep64)
>  extern int __clock_gettime64 (clockid_t clock_id, struct __timespec64 *tp);
>  libc_hidden_proto (__clock_gettime64)
>  extern int __timespec_get64 (struct __timespec64 *ts, int base);
> diff --git a/sysdeps/unix/sysv/linux/clock_nanosleep.c b/sysdeps/unix/sysv/linux/clock_nanosleep.c
> index 6ad3321435..697e403ac8 100644
> --- a/sysdeps/unix/sysv/linux/clock_nanosleep.c
> +++ b/sysdeps/unix/sysv/linux/clock_nanosleep.c
> @@ -27,8 +27,8 @@
>  /* We can simply use the syscall.  The CPU clocks are not supported
>     with this function.  */
>  int
> -__clock_nanosleep_time64 (clockid_t clock_id, int flags, const struct __timespec64 *req,
> -                          struct __timespec64 *rem)
> +__clock_nanosleep64 (clockid_t clock_id, int flags,
> +		     const struct __timespec64 *req, struct __timespec64 *rem)
>  {
>    if (clock_id == CLOCK_THREAD_CPUTIME_ID)
>      return EINVAL;
> @@ -68,7 +68,7 @@ __clock_nanosleep_time64 (clockid_t clock_id, int flags, const struct __timespec
>  }
>  
>  #if __TIMESIZE != 64
> -libc_hidden_def (__clock_nanosleep_time64)
> +libc_hidden_def (__clock_nanosleep64)
>  
>  int
>  __clock_nanosleep (clockid_t clock_id, int flags, const struct timespec *req,
> @@ -78,7 +78,7 @@ __clock_nanosleep (clockid_t clock_id, int flags, const struct timespec *req,
>    struct __timespec64 treq64, trem64;
>  
>    treq64 = valid_timespec_to_timespec64 (*req);
> -  r = __clock_nanosleep_time64 (clock_id, flags, &treq64, &trem64);
> +  r = __clock_nanosleep64 (clock_id, flags, &treq64, &trem64);
>  
>    if (r == EINTR && rem != NULL && (flags & TIMER_ABSTIME) == 0)
>      *rem = valid_timespec64_to_timespec (trem64);
> diff --git a/sysdeps/unix/sysv/linux/nanosleep.c b/sysdeps/unix/sysv/linux/nanosleep.c
> new file mode 100644
> index 0000000000..7e13a98b4c
> --- /dev/null
> +++ b/sysdeps/unix/sysv/linux/nanosleep.c
> @@ -0,0 +1,50 @@
> +/* High-resolution sleep.
> +   Copyright (C) 2020 Free Software Foundation, Inc.
> +   This file is part of the GNU C Library.
> +
> +   The GNU C Library is free software; you can redistribute it and/or
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <https://www.gnu.org/licenses/>.  */
> +
> +#include <time.h>
> +#include <errno.h>
> +
> +int
> +__nanosleep64 (const struct __timespec64 *req, struct __timespec64 *rem)
> +{
> +  int ret = __clock_nanosleep64 (CLOCK_REALTIME, 0, req, rem);
> +  if (ret != 0)
> +    {
> +      __set_errno (ret);
> +      return -1;
> +    }
> +  return 0;
> +}
> +#if __TIMESIZE != 64
> +libc_hidden_def (__nanosleep64)
> +
> +int
> +__nanosleep (const struct timespec *req, struct timespec *rem)
> +{
> +  struct __timespec64 treq64, trem64;
> +
> +  treq64 = valid_timespec_to_timespec64 (*req);
> +  int ret = __nanosleep64 (&treq64, &trem64);
> +
> +  if (ret != 0 && errno == EINTR && rem != NULL)
> +    *rem = valid_timespec64_to_timespec (trem64);
> +  return ret;
> +}
> +#endif
> +libc_hidden_def (__nanosleep)
> +weak_alias (__nanosleep, nanosleep)
>