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SysV IPC headers

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svn path=/trunk/; revision=2956
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KJK::Hyperion 2002-05-17 01:37:15 +00:00
parent cca52d053b
commit 9523648137
7 changed files with 138 additions and 7 deletions
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23
posix/include/sys/shm.h
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@ -1,4 +1,4 @@
/* $Id: shm.h,v 1.2 2002/02/20 09:17:56 hyperion Exp $
/* $Id: shm.h,v 1.3 2002/05/17 01:37:15 hyperion Exp $
*/
/*
* sys/shm.h
@ -30,10 +30,31 @@
/* OBJECTS */
/* TYPES */
typedef unsigned short shmatt_t;
struct shmid_ds
{
struct ipc_perm shm_perm; /* operation permission structure */
size_t shm_segsz; /* size of segment in bytes */
pid_t shm_lpid; /* process ID of last shared memory operation */
pid_t shm_cpid; /* process ID of creator */
shmatt_t shm_nattch; /* number of current attaches */
time_t shm_atime; /* time of last shmat() */
time_t shm_dtime; /* time of last shmdt() */
time_t shm_ctime; /* time of last change by shmctl() */
};
/* CONSTANTS */
#define SHM_RDONLY (0x00000200) /* Attach read-only (else read-write). */
#define SHM_RND (0x00000400) /* Round attach address to SHMLBA. */
#define SHMLBA (4096) /* Segment low boundary address multiple. */
/* PROTOTYPES */
void *shmat(int, const void *, int);
int shmctl(int, int, struct shmid_ds *);
int shmdt(const void *);
int shmget(key_t, size_t, int);
/* MACROS */