diff options
Diffstat (limited to 'include/linux/shm.h')
| -rw-r--r-- | include/linux/shm.h | 81 |
1 files changed, 1 insertions, 80 deletions
diff --git a/include/linux/shm.h b/include/linux/shm.h index edd086883ccb..bcf8a6a3ec00 100644 --- a/include/linux/shm.h +++ b/include/linux/shm.h | |||
| @@ -1,88 +1,11 @@ | |||
| 1 | #ifndef _LINUX_SHM_H_ | 1 | #ifndef _LINUX_SHM_H_ |
| 2 | #define _LINUX_SHM_H_ | 2 | #define _LINUX_SHM_H_ |
| 3 | 3 | ||
| 4 | #include <linux/ipc.h> | ||
| 5 | #include <linux/errno.h> | ||
| 6 | #ifdef __KERNEL__ | ||
| 7 | #include <asm/page.h> | 4 | #include <asm/page.h> |
| 8 | #else | 5 | #include <uapi/linux/shm.h> |
| 9 | #include <unistd.h> | ||
| 10 | #endif | ||
| 11 | |||
| 12 | /* | ||
| 13 | * SHMMAX, SHMMNI and SHMALL are upper limits are defaults which can | ||
| 14 | * be increased by sysctl | ||
| 15 | */ | ||
| 16 | 6 | ||
| 17 | #define SHMMAX 0x2000000 /* max shared seg size (bytes) */ | ||
| 18 | #define SHMMIN 1 /* min shared seg size (bytes) */ | ||
| 19 | #define SHMMNI 4096 /* max num of segs system wide */ | ||
| 20 | #ifdef __KERNEL__ | ||
| 21 | #define SHMALL (SHMMAX/PAGE_SIZE*(SHMMNI/16)) /* max shm system wide (pages) */ | 7 | #define SHMALL (SHMMAX/PAGE_SIZE*(SHMMNI/16)) /* max shm system wide (pages) */ |
| 22 | #else | ||
| 23 | #define SHMALL (SHMMAX/getpagesize()*(SHMMNI/16)) | ||
| 24 | #endif | ||
| 25 | #define SHMSEG SHMMNI /* max shared segs per process */ | ||
| 26 | |||
| 27 | #ifdef __KERNEL__ | ||
| 28 | #include <asm/shmparam.h> | 8 | #include <asm/shmparam.h> |
| 29 | #endif | ||
| 30 | |||
| 31 | /* Obsolete, used only for backwards compatibility and libc5 compiles */ | ||
| 32 | struct shmid_ds { | ||
| 33 | struct ipc_perm shm_perm; /* operation perms */ | ||
| 34 | int shm_segsz; /* size of segment (bytes) */ | ||
| 35 | __kernel_time_t shm_atime; /* last attach time */ | ||
| 36 | __kernel_time_t shm_dtime; /* last detach time */ | ||
| 37 | __kernel_time_t shm_ctime; /* last change time */ | ||
| 38 | __kernel_ipc_pid_t shm_cpid; /* pid of creator */ | ||
| 39 | __kernel_ipc_pid_t shm_lpid; /* pid of last operator */ | ||
| 40 | unsigned short shm_nattch; /* no. of current attaches */ | ||
| 41 | unsigned short shm_unused; /* compatibility */ | ||
| 42 | void *shm_unused2; /* ditto - used by DIPC */ | ||
| 43 | void *shm_unused3; /* unused */ | ||
| 44 | }; | ||
| 45 | |||
| 46 | /* Include the definition of shmid64_ds and shminfo64 */ | ||
| 47 | #include <asm/shmbuf.h> | ||
| 48 | |||
| 49 | /* permission flag for shmget */ | ||
| 50 | #define SHM_R 0400 /* or S_IRUGO from <linux/stat.h> */ | ||
| 51 | #define SHM_W 0200 /* or S_IWUGO from <linux/stat.h> */ | ||
| 52 | |||
| 53 | /* mode for attach */ | ||
| 54 | #define SHM_RDONLY 010000 /* read-only access */ | ||
| 55 | #define SHM_RND 020000 /* round attach address to SHMLBA boundary */ | ||
| 56 | #define SHM_REMAP 040000 /* take-over region on attach */ | ||
| 57 | #define SHM_EXEC 0100000 /* execution access */ | ||
| 58 | |||
| 59 | /* super user shmctl commands */ | ||
| 60 | #define SHM_LOCK 11 | ||
| 61 | #define SHM_UNLOCK 12 | ||
| 62 | |||
| 63 | /* ipcs ctl commands */ | ||
| 64 | #define SHM_STAT 13 | ||
| 65 | #define SHM_INFO 14 | ||
| 66 | |||
| 67 | /* Obsolete, used only for backwards compatibility */ | ||
| 68 | struct shminfo { | ||
| 69 | int shmmax; | ||
| 70 | int shmmin; | ||
| 71 | int shmmni; | ||
| 72 | int shmseg; | ||
| 73 | int shmall; | ||
| 74 | }; | ||
| 75 | |||
| 76 | struct shm_info { | ||
| 77 | int used_ids; | ||
| 78 | unsigned long shm_tot; /* total allocated shm */ | ||
| 79 | unsigned long shm_rss; /* total resident shm */ | ||
| 80 | unsigned long shm_swp; /* total swapped shm */ | ||
| 81 | unsigned long swap_attempts; | ||
| 82 | unsigned long swap_successes; | ||
| 83 | }; | ||
| 84 | |||
| 85 | #ifdef __KERNEL__ | ||
| 86 | struct shmid_kernel /* private to the kernel */ | 9 | struct shmid_kernel /* private to the kernel */ |
| 87 | { | 10 | { |
| 88 | struct kern_ipc_perm shm_perm; | 11 | struct kern_ipc_perm shm_perm; |
| @@ -127,6 +50,4 @@ static inline void exit_shm(struct task_struct *task) | |||
| 127 | } | 50 | } |
| 128 | #endif | 51 | #endif |
| 129 | 52 | ||
| 130 | #endif /* __KERNEL__ */ | ||
| 131 | |||
| 132 | #endif /* _LINUX_SHM_H_ */ | 53 | #endif /* _LINUX_SHM_H_ */ |
