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time: Change nanosleep to safe __kernel_* types

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Change over clock_nanosleep syscalls to use y2038 safe
__kernel_timespec times. This will enable changing over
of these syscalls to use new y2038 safe syscalls when
the architectures define the CONFIG_64BIT_TIME.

Note that nanosleep syscall is deprecated and does not have a
plan for making it y2038 safe. But, the syscall should work as
before on 64 bit machines and on 32 bit machines, the syscall
works correctly until y2038 as before using the existing compat
syscall version. There is no new syscall for supporting 64 bit
time_t on 32 bit architectures.

Cc: linux-api@vger.kernel.org
Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Deepa Dinamani 2018-03-13 21:03:33 -07:00 • committed by Arnd Bergmann
parent 6d5b841324
commit 01909974b4
5 changed files with 16 additions and 14 deletions
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8
kernel/time/hrtimer.c
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@ -1747,8 +1747,10 @@ out:
return ret;
}
SYSCALL_DEFINE2(nanosleep, struct timespec __user *, rqtp,
struct timespec __user *, rmtp)
#if !defined(CONFIG_64BIT_TIME) || defined(CONFIG_64BIT)
SYSCALL_DEFINE2(nanosleep, struct __kernel_timespec __user *, rqtp,
struct __kernel_timespec __user *, rmtp)
{
struct timespec64 tu;
@ -1763,6 +1765,8 @@ SYSCALL_DEFINE2(nanosleep, struct timespec __user *, rqtp,
return hrtimer_nanosleep(&tu, HRTIMER_MODE_REL, CLOCK_MONOTONIC);
}
#endif
#ifdef CONFIG_COMPAT_32BIT_TIME
COMPAT_SYSCALL_DEFINE2(nanosleep, struct compat_timespec __user *, rqtp,