ipc_findkey(9) [suse man page]

IPC_FINDKEY(9)						       Kernel IPC facilities						    IPC_FINDKEY(9)

NAME

       ipc_findkey - find a key in an ipc identifier set

SYNOPSIS

       struct kern_ipc_perm * ipc_findkey(struct ipc_ids * ids, key_t key);

ARGUMENTS

       ids
	   Identifier set

       key
	   The key to find

DESCRIPTION

       Requires ipc_ids.rw_mutex locked. Returns the LOCKED pointer to the ipc structure if found or NULL if not. If key is found ipc points to
       the owning ipc structure

COPYRIGHT

Kernel Hackers Manual 2.6.					     July 2010							    IPC_FINDKEY(9)

ipc.h(3HEAD)                                                          Headers                                                         ipc.h(3HEAD)

NAME

       ipc.h, ipc - XSI interprocess communication access structure

SYNOPSIS

       #include <sys/ipc.h>

DESCRIPTION

       The <sys/ipc.h> header is used by three mechanisms for interprocess communication (IPC): messages, semaphores, and shared memory. All use a
       common structure type, ipc_perm, to pass information used in determining permission to perform an IPC operation.

       The ipc_perm structure contains the following members:

       uid_t  uid     /* owner's user ID */
       gid_t  gid     /* owner's group ID */
       uid_t  cuid    /* creator's user ID */
       gid_t  cgid    /* creator's group ID */
       mode_t mode    /* read/write permission

       The uid_t, gid_t, mode_t, and key_t types are defined as described in <sys/types.h>. See types.h(3HEAD).

       Definitions are provided for the constants listed below.

       Mode bits:

       IPC_CREAT       Create entry if key does not exist.

       IPC_EXCL        Fail if key exists.

       IPC_NOWAIT      Error if request must wait.

       Keys:

       IPC_PRIVATE     Private key.

       Control commands:

       IPC_RMID        Remove identifier.

       IPC_SET         Set options.

       IPC_STAT        Get options.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE         |      ATTRIBUTE VALUE        |
       +-----------------------------+-----------------------------+
       |Interface Stability          |Standard                     |
       +-----------------------------+-----------------------------+

SEE ALSO

       ftok(3C), types.h(3HEAD), attributes(5), standards(5)

SunOS 5.10                                                          10 Sep 2004                                                       ipc.h(3HEAD)