IPC_FINDKEY(9) Kernel IPC facilities IPC_FINDKEY(9)NAME
ipc_findkey - find a key in an ipc identifier set
struct kern_ipc_perm * ipc_findkey(struct ipc_ids * ids, key_t key);
The key to find
Requires ipc_ids.rwsem 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 3.10 June 2014 IPC_FINDKEY(9)
Check Out this Related Man Page
ipc.h(3HEAD) Headers ipc.h(3HEAD)NAME
ipc.h, ipc - XSI interprocess communication access structure
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.
IPC_CREAT Create entry if key does not exist.
IPC_EXCL Fail if key exists.
IPC_NOWAIT Error if request must wait.
IPC_PRIVATE Private key.
IPC_RMID Remove identifier.
IPC_SET Set options.
IPC_STAT Get options.
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 5.11 10 Sep 2004 ipc.h(3HEAD)
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