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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>
77 lines
2.2 KiB
C
77 lines
2.2 KiB
C
/* Copyright (C) 1995-2021 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_SEM_H
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# error "Never include <bits/sem.h> directly; use <sys/sem.h> instead."
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#endif
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#include <sys/types.h>
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#include <bits/timesize.h>
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#include <bits/types/struct_semid_ds.h>
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#include <bits/types/struct_semid64_ds.h>
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/* Flags for `semop'. */
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#define SEM_UNDO 0x1000 /* undo the operation on exit */
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/* Commands for `semctl'. */
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#define GETPID 11 /* get sempid */
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#define GETVAL 12 /* get semval */
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#define GETALL 13 /* get all semval's */
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#define GETNCNT 14 /* get semncnt */
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#define GETZCNT 15 /* get semzcnt */
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#define SETVAL 16 /* set semval */
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#define SETALL 17 /* set all semval's */
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/* The user should define a union like the following to use it for arguments
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for `semctl'.
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union semun
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{
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int val; <= value for SETVAL
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struct semid_ds *buf; <= buffer for IPC_STAT & IPC_SET
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unsigned short int *array; <= array for GETALL & SETALL
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struct seminfo *__buf; <= buffer for IPC_INFO
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};
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Previous versions of this file used to define this union but this is
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incorrect. One can test the macro _SEM_SEMUN_UNDEFINED to see whether
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one must define the union or not. */
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#define _SEM_SEMUN_UNDEFINED 1
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#ifdef __USE_MISC
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/* ipcs ctl cmds */
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# define SEM_STAT 18
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# define SEM_INFO 19
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# define SEM_STAT_ANY 20
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struct seminfo
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{
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int semmap;
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int semmni;
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int semmns;
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int semmnu;
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int semmsl;
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int semopm;
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int semume;
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int semusz;
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int semvmx;
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int semaem;
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};
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#endif /* __USE_MISC */
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