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ipc_lock(9) [centos man page]

IPC_LOCK(9)						       Kernel IPC facilities						       IPC_LOCK(9)

ipc_lock - Lock an ipc structure without rwsem held SYNOPSIS
struct kern_ipc_perm * ipc_lock(struct ipc_ids * ids, int id); ARGUMENTS
ids IPC identifier set id ipc id to look for DESCRIPTION
Look for an id in the ipc ids idr and lock the associated ipc object. The ipc object is locked on successful exit. COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 IPC_LOCK(9)

Check Out this Related Man Page

IPC(2)							     Linux Programmer's Manual							    IPC(2)

ipc - System V IPC system calls SYNOPSIS
int ipc(unsigned int call, int first, int second, int third, void *ptr, long fifth); DESCRIPTION
ipc() is a common kernel entry point for the System V IPC calls for messages, semaphores, and shared memory. call determines which IPC function to invoke; the other arguments are passed through to the appropriate call. User programs should call the appropriate functions by their usual names. Only standard library implementors and kernel hackers need to know about ipc(). CONFORMING TO
ipc() is Linux-specific, and should not be used in programs intended to be portable. NOTES
On some architectures--for example x86-64 and ARM--there is no ipc() system call; instead msgctl(2), semctl(2), shmctl(2), and so on really are implemented as separate system calls. SEE ALSO
msgctl(2), msgget(2), msgrcv(2), msgsnd(2), semctl(2), semget(2), semop(2), semtimedop(2), shmat(2), shmctl(2), shmdt(2), shmget(2) COLOPHON
This page is part of release 3.53 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at Linux 2012-10-16 IPC(2)
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