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A new build flag, _TIME_BITS, enables the usage of the newer 64-bit
time symbols for legacy ABI (where 32-bit time_t is default). The 64
bit time support is only enabled if LFS (_FILE_OFFSET_BITS=64) is
also used.
Different than LFS support, the y2038 symbols are added only for the
required ABIs (armhf, csky, hppa, i386, m68k, microblaze, mips32,
mips64-n32, nios2, powerpc32, sparc32, s390-32, and sh). The ABIs with
64-bit time support are unchanged, both for symbol and types
redirection.
On Linux the full 64-bit time support requires a minimum of kernel
version v5.1. Otherwise, the 32-bit fallbacks are used and might
results in error with overflow return code (EOVERFLOW).
The i686-gnu does not yet support 64-bit time.
This patch exports following rediretions to support 64-bit time:
* libc:
adjtime
adjtimex
clock_adjtime
clock_getres
clock_gettime
clock_nanosleep
clock_settime
cnd_timedwait
ctime
ctime_r
difftime
fstat
fstatat
futimens
futimes
futimesat
getitimer
getrusage
gettimeofday
gmtime
gmtime_r
localtime
localtime_r
lstat_time
lutimes
mktime
msgctl
mtx_timedlock
nanosleep
nanosleep
ntp_gettime
ntp_gettimex
ppoll
pselec
pselect
pthread_clockjoin_np
pthread_cond_clockwait
pthread_cond_timedwait
pthread_mutex_clocklock
pthread_mutex_timedlock
pthread_rwlock_clockrdlock
pthread_rwlock_clockwrlock
pthread_rwlock_timedrdlock
pthread_rwlock_timedwrlock
pthread_timedjoin_np
recvmmsg
sched_rr_get_interval
select
sem_clockwait
semctl
semtimedop
sem_timedwait
setitimer
settimeofday
shmctl
sigtimedwait
stat
thrd_sleep
time
timegm
timerfd_gettime
timerfd_settime
timespec_get
utime
utimensat
utimes
utimes
wait3
wait4
* librt:
aio_suspend
mq_timedreceive
mq_timedsend
timer_gettime
timer_settime
* libanl:
gai_suspend
Reviewed-by: Lukasz Majewski <lukma@denx.de>
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Tested-by: Carlos O'Donell <carlos@redhat.com>
115 lines
3.9 KiB
C
115 lines
3.9 KiB
C
/* Copyright (C) 1992-2021 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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<https://www.gnu.org/licenses/>. */
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#ifndef _SYS_RESOURCE_H
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#define _SYS_RESOURCE_H 1
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#include <features.h>
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/* Get the system-dependent definitions of structures and bit values. */
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#include <bits/resource.h>
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#ifndef __id_t_defined
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typedef __id_t id_t;
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# define __id_t_defined
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#endif
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__BEGIN_DECLS
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/* The X/Open standard defines that all the functions below must use
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`int' as the type for the first argument. When we are compiling with
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GNU extensions we change this slightly to provide better error
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checking. */
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#if defined __USE_GNU && !defined __cplusplus
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typedef enum __rlimit_resource __rlimit_resource_t;
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typedef enum __rusage_who __rusage_who_t;
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typedef enum __priority_which __priority_which_t;
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#else
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typedef int __rlimit_resource_t;
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typedef int __rusage_who_t;
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typedef int __priority_which_t;
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#endif
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/* Put the soft and hard limits for RESOURCE in *RLIMITS.
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Returns 0 if successful, -1 if not (and sets errno). */
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#ifndef __USE_FILE_OFFSET64
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extern int getrlimit (__rlimit_resource_t __resource,
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struct rlimit *__rlimits) __THROW __nonnull ((2));
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#else
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# ifdef __REDIRECT_NTH
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extern int __REDIRECT_NTH (getrlimit, (__rlimit_resource_t __resource,
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struct rlimit *__rlimits), getrlimit64)
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__nonnull ((2));
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# else
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# define getrlimit getrlimit64
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# endif
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#endif
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#ifdef __USE_LARGEFILE64
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extern int getrlimit64 (__rlimit_resource_t __resource,
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struct rlimit64 *__rlimits) __THROW __nonnull ((2));
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#endif
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/* Set the soft and hard limits for RESOURCE to *RLIMITS.
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Only the super-user can increase hard limits.
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Return 0 if successful, -1 if not (and sets errno). */
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#ifndef __USE_FILE_OFFSET64
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extern int setrlimit (__rlimit_resource_t __resource,
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const struct rlimit *__rlimits) __THROW __nonnull ((2));
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#else
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# ifdef __REDIRECT_NTH
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extern int __REDIRECT_NTH (setrlimit, (__rlimit_resource_t __resource,
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const struct rlimit *__rlimits),
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setrlimit64) __nonnull ((2));
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# else
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# define setrlimit setrlimit64
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# endif
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#endif
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#ifdef __USE_LARGEFILE64
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extern int setrlimit64 (__rlimit_resource_t __resource,
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const struct rlimit64 *__rlimits) __THROW
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__nonnull ((2));
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#endif
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/* Return resource usage information on process indicated by WHO
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and put it in *USAGE. Returns 0 for success, -1 for failure. */
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extern int getrusage (__rusage_who_t __who, struct rusage *__usage) __THROW;
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#ifdef __USE_TIME_BITS64
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# if defined(__REDIRECT_NTH)
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extern int __REDIRECT_NTH (getrusage, (__rusage_who_t __who,
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struct rusage *__usage),
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__getrusage64);
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# else
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# define getrusage __getrusage64
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# endif
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#endif
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/* Return the highest priority of any process specified by WHICH and WHO
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(see above); if WHO is zero, the current process, process group, or user
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(as specified by WHO) is used. A lower priority number means higher
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priority. Priorities range from PRIO_MIN to PRIO_MAX (above). */
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extern int getpriority (__priority_which_t __which, id_t __who) __THROW;
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/* Set the priority of all processes specified by WHICH and WHO (see above)
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to PRIO. Returns 0 on success, -1 on errors. */
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extern int setpriority (__priority_which_t __which, id_t __who, int __prio)
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__THROW;
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__END_DECLS
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#endif /* sys/resource.h */
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