mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-27 07:20:11 +00:00
a51e035889
The Linux kernel expects itimerval to use a 32-bit time_t, even on archs with a 64-bit time_t (like RV32). To address this let's convert itimerval to/from 32-bit and 64-bit to ensure the kernel always gets a 32-bit time_t. While we are converting these functions let's also convert them to be the y2038 safe versions. This means there is a *64 function that is called by a backwards compatible wrapper. Tested-by: Lukasz Majewski <lukma@denx.de> Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
91 lines
2.7 KiB
C
91 lines
2.7 KiB
C
/* setitimer -- Set the state of an interval timer. Linux/32 version.
|
|
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
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <time.h>
|
|
#include <sys/time.h>
|
|
#include <sys/types.h>
|
|
#include <sysdep.h>
|
|
#include <tv32-compat.h>
|
|
|
|
int
|
|
__setitimer64 (__itimer_which_t which,
|
|
const struct __itimerval64 *restrict new_value,
|
|
struct __itimerval64 *restrict old_value)
|
|
{
|
|
#if __KERNEL_OLD_TIMEVAL_MATCHES_TIMEVAL64
|
|
return INLINE_SYSCALL_CALL (setitimer, which, new_value, old_value);
|
|
#else
|
|
struct __itimerval32 new_value_32;
|
|
|
|
if (! in_time_t_range (new_value->it_interval.tv_sec)
|
|
|| ! in_time_t_range (new_value->it_value.tv_sec))
|
|
{
|
|
__set_errno (EOVERFLOW);
|
|
return -1;
|
|
}
|
|
new_value_32.it_interval
|
|
= valid_timeval64_to_timeval32 (new_value->it_interval);
|
|
new_value_32.it_value
|
|
= valid_timeval64_to_timeval32 (new_value->it_value);
|
|
|
|
if (old_value == NULL)
|
|
return INLINE_SYSCALL_CALL (setitimer, which, &new_value_32, NULL);
|
|
|
|
struct __itimerval32 old_value_32;
|
|
if (INLINE_SYSCALL_CALL (setitimer, which, &new_value_32, &old_value_32)
|
|
== -1)
|
|
return -1;
|
|
|
|
old_value->it_interval
|
|
= valid_timeval32_to_timeval64 (old_value_32.it_interval);
|
|
old_value->it_value
|
|
= valid_timeval32_to_timeval64 (old_value_32.it_value);
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
#if __TIMESIZE != 64
|
|
libc_hidden_def (__setitimer64)
|
|
int
|
|
__setitimer (__itimer_which_t which,
|
|
const struct itimerval *restrict new_value,
|
|
struct itimerval *restrict old_value)
|
|
{
|
|
int ret;
|
|
struct __itimerval64 new64, old64;
|
|
|
|
new64.it_interval
|
|
= valid_timeval_to_timeval64 (new_value->it_interval);
|
|
new64.it_value
|
|
= valid_timeval_to_timeval64 (new_value->it_value);
|
|
|
|
ret = __setitimer64 (which, &new64, old_value ? &old64 : NULL);
|
|
|
|
if (ret == 0 && old_value != NULL)
|
|
{
|
|
old_value->it_interval
|
|
= valid_timeval64_to_timeval (old64.it_interval);
|
|
old_value->it_value
|
|
= valid_timeval64_to_timeval (old64.it_value);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
#endif
|
|
weak_alias (__setitimer, setitimer)
|