IPC(5)                     Linux Programmer's Manual                    IPC(5)

NAME
       ipc - System V <?><?><?><?><?><?><?>

SYNOPSIS <?><?>
       # include <sys/types.h>
       # include <sys/ipc.h>
       # include <sys/msg.h>
       # include <sys/sem.h>
       # include <sys/shm.h>

DESCRIPTION
       <?><?><?><?><?><?> System V <?><?><?><?><?><?><?><?> Linux
       <?><?><?><?>: <?><?><?><?>, <?><?><?><?><?>, <?><?><?><?><?><?><?><?>.
       <?><?><?><?> <?><?> <?>, <?><?><?><?><?><?><?><?><?><?><?><?><?><?><?>.

   <?><?><?><?><?><?><?>
       <?><?><?><?><?>, <?><?><?><?><?><?><?><?> struct ipc_perm
       <?><?><?><?><?><?><?><?><?><?>, <?><?><?><?><?> ipc
       <?><?><?><?><?><?><?><?><?><?>. <?> <sys/ipc.h> <?><?><?><?> ipc_perm,
       <?><?><?><?><?>:

            ushort cuid;    /* <?><?><?> uid */
            ushort cgid;    /* <?><?><?> gid */
            ushort uid; /* <?><?><?> uid */
            ushort gid; /* <?><?><?> gid */
            ushort mode; /* <?>/<?><?><?><?> */

       <?><?> ipc_perm <?><?><?> mode
       <?><?><?><?><?><?><?><?><?><?><?><?><?><?><?> <?>,
       <?><?><?><?><?><?><?><?> ipc
       <?><?><?><?><?><?><?><?><?><?><?><?><?><?>. <?><?> <?><?><?>:

            0400 <?><?><?><?><?>.
            0200 <?><?><?><?><?>.
            0040 <?><?><?><?><?>.
            0020 <?><?><?><?><?>.
            0004 <?><?><?><?><?><?><?>.
            0002 <?><?><?><?><?><?><?>.

       <?><?><?><?><?><?><?><?><?> 0100, 0010 <?> 0001. <?><?>, <?><?><?>
       "<?><?>" <?> <?><?><?><?><?><?><?><?><?> "<?><?><?>".

       <?> <sys/ipc.h> <?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?>:

       IPC_CREAT     <?><?> key <?><?><?><?><?><?>.

       IPC_EXCL      <?><?> key <?><?><?><?><?><?><?>.

       IPC_NOWAIT    <?><?><?><?><?><?><?><?>, <?><?><?><?>.

       IPC_PRIVATE   <?><?> key.

       IPC_RMID      <?><?><?><?>.

       IPC_SET       <?><?><?><?><?><?>.

       IPC_STAT      <?><?><?><?><?><?>.

       <?><?><?> IPC_PRIVATE <?><?><?> key_t <?><?>,
       <?><?><?><?><?><?><?><?><?><?><?><?>,<?><?><?><?><?><?>( OR
       )<?><?><?><?><?> int <?><?>.

   <?><?><?><?>
       <?><?><?><?><?><?><?><?> (<?><?> msqid) <?><?><?><?>, <?><?><?><?>
       struct msquid_ds <?> <sys/msg.h> <?><?><?>, <?><?><?><?><?><?>:

            struct ipc_perm msg_perm;
            ushort msg_qnum;     /* <?><?><?><?><?><?><?> */
            ushort msg_qbytes;   /* <?><?><?><?><?><?><?><?><?><?> */
            ushort msg_lspid;    /* <?><?><?> msgsnd <?><?><?> pid  */
            ushort msg_lrpid;    /* <?><?><?> msgrcv <?><?><?> pid */
            time_t msg_stime;    /* <?><?><?> msgsnd <?><?><?> */
            time_t msg_rtime;    /* <?><?><?> msgrcv <?><?><?> */
            time_t msg_ctime;    /* <?><?><?><?><?><?><?> */

       msg_perm   ipc_perm <?><?>,
                  <?><?><?><?><?><?><?><?><?><?><?><?><?><?><?>.

       msg_qnum   <?><?><?><?><?><?><?><?><?><?>.

       msg_qbytes <?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?>.

       msg_lspid  <?><?><?> msgsnd <?><?><?><?><?><?><?><?> ID.

       msg_lrpid  <?><?><?> msgrcv <?><?><?><?><?><?><?><?> ID.

       msg_stime  <?><?><?> msgsnd <?><?><?><?><?><?><?>.

       msg_rtime  <?><?><?> msgrcv <?><?><?><?><?><?><?>.

       msg_ctime  <?><?><?><?><?><?> msqid_ds <?><?><?><?><?><?><?>.

   <?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?> (<?><?> semid) <?><?><?><?>,
       <?><?><?><?><?><?><?><?><?><?><?><?> struct semid_ds <?><?> <sys/sem.h>
       <?><?><?>, <?><?><?><?><?><?>:

            struct ipc_perm sem_perm;
            time_t sem_otime;    /* <?><?><?><?><?><?><?><?> */
            time_t sem_ctime;    /* <?><?><?><?><?><?><?><?> */
            ushort sem_nsems;    /* <?><?><?><?><?><?><?><?> */

       sem_perm   ipc_perm <?><?>,
                  <?><?><?><?><?><?><?><?><?><?><?><?><?><?><?>.

       sem_otime  <?><?><?> semop <?><?><?><?><?><?><?>.

       sem_ctime  <?><?><?> semctl <?><?><?><?><?><?><?>,
                  <?><?><?><?><?><?><?><?><?><?><?><?><?><?><?>
                  <?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?>.

       sem_nsems  <?><?><?><?><?><?><?><?><?><?><?><?>.
                  <?><?><?><?><?><?><?><?><?><?><?><?><?> 0 <?> sem_nsems-1
                  <?><?><?><?><?><?><?><?><?><?>.

       <?><?><?><?><?><?><?><?><?> struct sem <?><?>, <?><?><?><?><?><?>:

            ushort semval;  /* <?><?><?><?> */
            short sempid;   /* <?><?><?><?><?><?><?><?><?> pid */
            ushort semncnt;      /* <?><?><?><?> semval <?><?><?><?><?><?> */
            ushort semzcnt;      /* <?><?> semval = 0 <?><?><?><?><?> */

       semval     <?><?><?><?><?>,<?><?><?><?><?><?><?>.

       sempid     <?><?><?><?><?><?><?><?><?><?><?><?><?><?><?> ID.

       semncnt    <?><?><?><?> semval <?><?><?><?>.

       semznt     <?><?> semval <?><?> 0 <?><?><?><?>.

   <?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?> (<?><?> shmid) <?><?><?><?>,
       <?><?><?><?><?><?><?><?><?><?> struct shmid_ds <?> <sys/shm.h>
       <?><?><?>, <?><?><?><?><?><?>:

            struct ipc_perm shm_perm;
            int shm_segsz;  /* <?><?><?> */
            ushort shm_cpid;     /* <?><?><?> pid */
            ushort shm_lpid;     /* <?><?><?><?><?><?><?><?><?> pid */
            short shm_nattch;    /* <?><?><?><?><?><?><?><?><?> */
            time_t shm_atime;    /* <?><?><?><?><?><?><?><?> */
            time_t shm_dtime;    /* <?><?><?><?><?><?><?><?> */
            time_t shm_ctime;    /* <?><?><?><?><?><?><?><?> */

       shm_perm   ipc_perm <?><?>,
                  <?><?><?><?><?><?><?><?><?><?><?><?><?><?><?>.

       shm_segsz  <?><?><?><?><?><?><?><?><?>, <?><?><?><?><?><?><?>.

       shm_cpid   <?><?><?><?><?><?><?><?><?><?><?><?><?> ID.

       shm_lpid   <?><?><?><?> shmat <?><?> shmdt <?><?><?><?><?><?><?> ID.

       shm_nattch <?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?>.

       shm_atime  <?><?><?> shmat <?><?><?><?><?><?><?>.

       shm_dtime  <?><?><?> shmdt <?><?><?><?><?><?><?>.

       shm_ctime  <?><?><?> shmctl <?><?><?><?><?><?><?>,
                  <?><?><?><?><?><?><?><?> shmid_ds.

<?><?>
       ftok(3), msgctl(2), msgget(2), msgrcv(2), msgsnd(2), semctl(2),
       semget(2), semop(2), shmat(2), shmctl(2), shmget(2), shmdt(2).


[<?><?><?><?><?><?>]
       name <email>

[<?><?><?><?><?><?><?>]
       2001/02/02

<?><?><?> Linux <?><?> man <?><?><?><?><?><?><?><?>:
       http://cmpp.linuxforum.net

<?>
       <?><?><?><?><?><?><?><?><?> man <?><?><?><?><?><?><?><?>
       <?><?> man <?><?><?><?><?><?>https://github.com/man-pages-zh/manpages-
       zh

Linux 0.99.13                  November 1, 1993                         IPC(5)