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 5.11 10 Sep 2004 ipc.h(3HEAD)
Check Out this Related Man Page
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)
Hi, so I've got this program("main") that fork executes another ("user"). These programs communicate through fifos.
One communication is a spawn call, where user passes an executable, main forks and executes it. So, I'm keeping track of all my processes using a task table. After the fork (for... (6 Replies)
What are the differences/similarities between posix and system V ipc and their mechanisms?
also, why is system v only limited to inter-process communication on a single node?
thanks (0 Replies)
hi
i have a cfg file,it contains
lpdma520.dev.ipc.us.aexp.com=SUBMCORE.REQUEST.FT
lpdma521.dev.ipc.us.aexp.com=SUBMCORE.REQUEST.FTREQ
lpdma522.dev.ipc.us.aexp.com=SUBMITSECUREFILEFLOW
i am retrieving the values using the function
RetrieveCfgvalue()
{
CFG_VALUE=`grep "$2="... (1 Reply)
i want to write a C chat program that communicates over IPC(inter process communication), that could be run using 2 seperate terminal windows within the same computer. so that wat u type in one terminal window , should appear on the other and vice versa...
could some one please help me with the... (2 Replies)
What if the operating systems would not use any ipc mechanism in order to exchange the datas with each other,which technique could be an alternative for messaging between the processes?Do you guys think using the vfork () system call to duplicate processes is a logical solution for this problem? (4 Replies)