mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-11 05:40:06 +00:00
47f24c21ee
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>
87 lines
2.7 KiB
C
87 lines
2.7 KiB
C
/* Copyright (C) 1995-2021 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
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef _SYS_SHM_H
|
|
# error "Never include <bits/shm.h> directly; use <sys/shm.h> instead."
|
|
#endif
|
|
|
|
#include <bits/types.h>
|
|
#include <bits/wordsize.h>
|
|
#include <bits/shmlba.h>
|
|
|
|
/* Permission flag for shmget. */
|
|
#define SHM_R 0400 /* or S_IRUGO from <linux/stat.h> */
|
|
#define SHM_W 0200 /* or S_IWUGO from <linux/stat.h> */
|
|
|
|
/* Flags for `shmat'. */
|
|
#define SHM_RDONLY 010000 /* attach read-only else read-write */
|
|
#define SHM_RND 020000 /* round attach address to SHMLBA */
|
|
#define SHM_REMAP 040000 /* take-over region on attach */
|
|
#define SHM_EXEC 0100000 /* execution access */
|
|
|
|
/* Commands for `shmctl'. */
|
|
#define SHM_LOCK 11 /* lock segment (root only) */
|
|
#define SHM_UNLOCK 12 /* unlock segment (root only) */
|
|
|
|
__BEGIN_DECLS
|
|
|
|
/* Type to count number of attaches. */
|
|
typedef __syscall_ulong_t shmatt_t;
|
|
|
|
#include <bits/types/struct_shmid_ds.h>
|
|
#include <bits/types/struct_shmid64_ds.h>
|
|
|
|
#ifdef __USE_MISC
|
|
|
|
/* ipcs ctl commands */
|
|
# define SHM_STAT 13
|
|
# define SHM_INFO 14
|
|
# define SHM_STAT_ANY 15
|
|
|
|
/* shm_mode upper byte flags */
|
|
# define SHM_DEST 01000 /* segment will be destroyed on last detach */
|
|
# define SHM_LOCKED 02000 /* segment will not be swapped */
|
|
# define SHM_HUGETLB 04000 /* segment is mapped via hugetlb */
|
|
# define SHM_NORESERVE 010000 /* don't check for reservations */
|
|
|
|
struct shminfo
|
|
{
|
|
__syscall_ulong_t shmmax;
|
|
__syscall_ulong_t shmmin;
|
|
__syscall_ulong_t shmmni;
|
|
__syscall_ulong_t shmseg;
|
|
__syscall_ulong_t shmall;
|
|
__syscall_ulong_t __glibc_reserved1;
|
|
__syscall_ulong_t __glibc_reserved2;
|
|
__syscall_ulong_t __glibc_reserved3;
|
|
__syscall_ulong_t __glibc_reserved4;
|
|
};
|
|
|
|
struct shm_info
|
|
{
|
|
int used_ids;
|
|
__syscall_ulong_t shm_tot; /* total allocated shm */
|
|
__syscall_ulong_t shm_rss; /* total resident shm */
|
|
__syscall_ulong_t shm_swp; /* total swapped shm */
|
|
__syscall_ulong_t swap_attempts;
|
|
__syscall_ulong_t swap_successes;
|
|
};
|
|
|
|
#endif /* __USE_MISC */
|
|
|
|
__END_DECLS
|