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Linux Programmer's Manual (2)
ipc - System V IPC system calls
int ipc(unsigned int call, int first, int second, int third,
void *ptr, long fifth);
is a common kernel entry point for the System V IPC calls
for messages, semaphores, and shared memory.
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
is Linux-specific, and should not be used in programs
intended to be portable.
On some architectures---for example x86-64 and ARM---there is no
system call; instead
and so on really are implemented as separate system calls.
This page is part of release 3.66 of the Linux
A description of the project,
information about reporting bugs,
and the latest version of this page,
can be found at
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Time: 21:42:57 GMT, July 12, 2014