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author | David Woodhouse <David.Woodhouse@intel.com> | 2012-11-21 10:38:13 +0000 |
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committer | David Woodhouse <David.Woodhouse@intel.com> | 2012-11-21 10:38:13 +0000 |
commit | 851462444d421c223965b12b836bef63da61b57f (patch) | |
tree | 495baa14e638817941496c36e1443aed7dae0ea0 /include/uapi/linux/shm.h | |
parent | 5a6ea4af0907f995dc06df21a9c9ef764c7cd3bc (diff) | |
parent | 6924d99fcdf1a688538a3cdebd1f135c22eec191 (diff) | |
download | op-kernel-dev-851462444d421c223965b12b836bef63da61b57f.zip op-kernel-dev-851462444d421c223965b12b836bef63da61b57f.tar.gz |
Merge branch 'for-3.7' of git://git.infradead.org/users/dedekind/l2-mtd
Conflicts:
drivers/mtd/nand/nand_base.c
Diffstat (limited to 'include/uapi/linux/shm.h')
-rw-r--r-- | include/uapi/linux/shm.h | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/include/uapi/linux/shm.h b/include/uapi/linux/shm.h new file mode 100644 index 0000000..ec36fa1 --- /dev/null +++ b/include/uapi/linux/shm.h @@ -0,0 +1,79 @@ +#ifndef _UAPI_LINUX_SHM_H_ +#define _UAPI_LINUX_SHM_H_ + +#include <linux/ipc.h> +#include <linux/errno.h> +#ifndef __KERNEL__ +#include <unistd.h> +#endif + +/* + * SHMMAX, SHMMNI and SHMALL are upper limits are defaults which can + * be increased by sysctl + */ + +#define SHMMAX 0x2000000 /* max shared seg size (bytes) */ +#define SHMMIN 1 /* min shared seg size (bytes) */ +#define SHMMNI 4096 /* max num of segs system wide */ +#ifndef __KERNEL__ +#define SHMALL (SHMMAX/getpagesize()*(SHMMNI/16)) +#endif +#define SHMSEG SHMMNI /* max shared segs per process */ + + +/* Obsolete, used only for backwards compatibility and libc5 compiles */ +struct shmid_ds { + struct ipc_perm shm_perm; /* operation perms */ + int shm_segsz; /* size of segment (bytes) */ + __kernel_time_t shm_atime; /* last attach time */ + __kernel_time_t shm_dtime; /* last detach time */ + __kernel_time_t shm_ctime; /* last change time */ + __kernel_ipc_pid_t shm_cpid; /* pid of creator */ + __kernel_ipc_pid_t shm_lpid; /* pid of last operator */ + unsigned short shm_nattch; /* no. of current attaches */ + unsigned short shm_unused; /* compatibility */ + void *shm_unused2; /* ditto - used by DIPC */ + void *shm_unused3; /* unused */ +}; + +/* Include the definition of shmid64_ds and shminfo64 */ +#include <asm/shmbuf.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> */ + +/* mode for attach */ +#define SHM_RDONLY 010000 /* read-only access */ +#define SHM_RND 020000 /* round attach address to SHMLBA boundary */ +#define SHM_REMAP 040000 /* take-over region on attach */ +#define SHM_EXEC 0100000 /* execution access */ + +/* super user shmctl commands */ +#define SHM_LOCK 11 +#define SHM_UNLOCK 12 + +/* ipcs ctl commands */ +#define SHM_STAT 13 +#define SHM_INFO 14 + +/* Obsolete, used only for backwards compatibility */ +struct shminfo { + int shmmax; + int shmmin; + int shmmni; + int shmseg; + int shmall; +}; + +struct shm_info { + int used_ids; + unsigned long shm_tot; /* total allocated shm */ + unsigned long shm_rss; /* total resident shm */ + unsigned long shm_swp; /* total swapped shm */ + unsigned long swap_attempts; + unsigned long swap_successes; +}; + + +#endif /* _UAPI_LINUX_SHM_H_ */ |