SYSCALL(2) BSD System Calls Manual SYSCALL(2)NAMEsyscall — indirect system call
SYNOPSIS
#include <sys/syscall.h>
#include <unistd.h>
int
syscall(int number, ...);
DESCRIPTIONSyscall() performs the system call whose assembly language interface has
the specified number with the specified arguments. Symbolic constants
for system calls can be found in the header file ⟨sys/syscall.h⟩.
RETURN VALUES
The return value is defined by the system call being invoked. In gen‐
eral, a 0 return value indicates success. A -1 return value indicates an
error, and an error code is stored in errno.
HISTORY
The syscall() function call appeared in 4.0BSD.
4BSD June 16, 1993 4BSD