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musl/include/sys/shm.h

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initial check-in, version 0.5.0
2011-02-12 05:22:29 +00:00
#ifndef _SYS_SHM_H
#define _SYS_SHM_H
fix all missing instances of __cplusplus checks/extern "C" in headers patch by Arvid Picciani (aep)
2011-11-11 01:40:06 +00:00
#ifdef __cplusplus
extern "C" {
#endif
default features: make musl usable without feature test macros the old behavior of exposing nothing except plain ISO C can be obtained by defining __STRICT_ANSI__ or using a compiler option (such as -std=c99) that predefines it. the new default featureset is POSIX with XSI plus _BSD_SOURCE. any explicit feature test macros will inhibit the default. installation docs have also been updated to reflect this change.
2012-09-08 03:13:55 +00:00
#include <features.h>
initial check-in, version 0.5.0
2011-02-12 05:22:29 +00:00
#define __NEED_time_t
#define __NEED_size_t
#define __NEED_pid_t
#include <bits/alltypes.h>
#include <sys/ipc.h>
sys/shm.h: move arch specific structs to bits/
2014-01-11 12:41:50 +00:00
#ifdef _GNU_SOURCE
#define __used_ids used_ids
#define __swap_attempts swap_attempts
#define __swap_successes swap_successes
#endif
initial check-in, version 0.5.0
2011-02-12 05:22:29 +00:00
#include <bits/shm.h>
add some missing macros to sys/shm.h these are not specified in the standard, but in the reserved namespace, so there is no problem with defining them unconditionally.
2012-12-15 05:43:27 +00:00
#define SHM_R 0400
#define SHM_W 0200
numerous fixes to sysv ipc some of these definitions were just plain wrong, others based on outdated ancient "non-64" versions of the kernel interface. as much as possible has now been moved out of bits/* these changes break abi (the old abi for these functions was wrong), but since they were not working anyway it can hardly matter.
2011-04-13 20:45:43 +00:00
#define SHM_RDONLY 010000
#define SHM_RND 020000
#define SHM_REMAP 040000
#define SHM_EXEC 0100000
#define SHM_LOCK 11
#define SHM_UNLOCK 12
#define SHM_STAT 13
#define SHM_INFO 14
#define SHM_DEST 01000
#define SHM_LOCKED 02000
#define SHM_HUGETLB 04000
#define SHM_NORESERVE 010000
sys/{mman,shm}.h: add {MAP,SHM}_HUGE_ macros from linux uapi *_HUGE_SHIFT, *_HUGE_2MB, *_HUGE_1GB are documented in the man page, so add all of the *_HUGE_* macros from linux uapi. if MAP_HUGETLB is set, top bits of the mmap flags encode the page size. see the linux commit aafd4562dfee81a40ba21b5ea3cf5e06664bc7f6 if SHM_HUGETLB is set, top bits of the shmget flags encode the page size. see the linux commit 4da243ac1cf6aeb30b7c555d56208982d66d6d33 *_HUGE_16GB is defined unsigned to avoid signed left shift ub.
2017-11-26 23:58:25 +00:00
#define SHM_HUGE_SHIFT 26
#define SHM_HUGE_MASK 0x3f
#define SHM_HUGE_64KB (16 << 26)
#define SHM_HUGE_512KB (19 << 26)
#define SHM_HUGE_1MB (20 << 26)
#define SHM_HUGE_2MB (21 << 26)
#define SHM_HUGE_8MB (23 << 26)
#define SHM_HUGE_16MB (24 << 26)
#define SHM_HUGE_256MB (28 << 26)
#define SHM_HUGE_1GB (30 << 26)
#define SHM_HUGE_2GB (31 << 26)
#define SHM_HUGE_16GB (34U << 26)
add missing type shmatt_t in sys/shm.h this type is not really intended to be used; it's just there to allow implementations to choose the type for the shm_nattch member of struct shmid_sh, presumably since historical implementations disagreed on the type. in any case, it needs to be there, so now it is.
2013-06-29 03:39:50 +00:00
typedef unsigned long shmatt_t;
initial check-in, version 0.5.0
2011-02-12 05:22:29 +00:00
void *shmat(int, const void *, int);
int shmctl(int, int, struct shmid_ds *);
int shmdt(const void *);
int shmget(key_t, size_t, int);
fix all missing instances of __cplusplus checks/extern "C" in headers patch by Arvid Picciani (aep)
2011-11-11 01:40:06 +00:00
#ifdef __cplusplus
}
#endif
initial check-in, version 0.5.0
2011-02-12 05:22:29 +00:00
#endif