syscall man page on CentOS

syscall man page on CentOS

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SYSCALL(2)		    BSD System Calls Manual		    SYSCALL(2)

NAME
     syscall — indirect system call

SYNOPSIS
     #include <sys/syscall.h>
     #include <unistd.h>

     int
     syscall(int number, ...);

DESCRIPTION
     Syscall() 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

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