|ipc(2)||System Calls Manual||ipc(2)|
ipc - System V IPC system calls
Standard C library (libc, -lc)
#include <linux/ipc.h> /* Definition of needed constants */ #include <sys/syscall.h> /* Definition of SYS_* constants */ #include <unistd.h>
int syscall(SYS_ipc, unsigned int call, int first, unsigned long second, unsigned long third, void *ptr, long fifth);
Note: glibc provides no wrapper for ipc(), necessitating the use of syscall(2).
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-space programs should call the appropriate functions by their usual names. Only standard library implementors and kernel hackers need to know about ipc().
ipc() is Linux-specific, and should not be used in programs intended to be portable.
|2022-10-30||Linux man-pages 6.02|