/* 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
Directory Contents
Dirs: 2 × Files: 176
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