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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>
62 lines
1.9 KiB
C
62 lines
1.9 KiB
C
/* getitimer -- Get the state of an interval timer. Linux/32 version.
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Copyright (C) 2020 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <time.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <sysdep.h>
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#include <tv32-compat.h>
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int
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__getitimer64 (__itimer_which_t which, struct __itimerval64 *curr_value)
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{
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#if __KERNEL_OLD_TIMEVAL_MATCHES_TIMEVAL64
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return INLINE_SYSCALL_CALL (getitimer, which, curr_value);
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#else
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struct __itimerval32 curr_value_32;
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if (INLINE_SYSCALL_CALL (getitimer, which, &curr_value_32) == -1)
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return -1;
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curr_value->it_interval
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= valid_timeval32_to_timeval64 (curr_value_32.it_interval);
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curr_value->it_value
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= valid_timeval32_to_timeval64 (curr_value_32.it_value);
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return 0;
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#endif
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}
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#if __TIMESIZE != 64
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libc_hidden_def (__getitimer64)
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int
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__getitimer (__itimer_which_t which, struct itimerval *curr_value)
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{
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struct __itimerval64 val64;
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if (__getitimer64 (which, &val64) != 0)
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return -1;
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curr_value->it_interval
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= valid_timeval64_to_timeval (val64.it_interval);
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curr_value->it_value
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= valid_timeval64_to_timeval (val64.it_value);
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return 0;
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}
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#endif
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weak_alias (__getitimer, getitimer)
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