1SYSCALL(2)                  BSD System Calls Manual                 SYSCALL(2)
2

NAME

4     syscall — indirect system call
5

SYNOPSIS

7     #include <sys/syscall.h>
8     #include <unistd.h>
9
10     int
11     syscall(int number, ...);
12

DESCRIPTION

14     Syscall() performs the system call whose assembly language interface has
15     the specified number with the specified arguments.  Symbolic constants
16     for system calls can be found in the header file ⟨sys/syscall.h⟩.
17

RETURN VALUES

19     The return value is defined by the system call being invoked.  In gen‐
20     eral, a 0 return value indicates success.  A -1 return value indicates an
21     error, and an error code is stored in errno.
22

HISTORY

24     The syscall() function call appeared in 4.0BSD.
25
264BSD                             June 16, 1993                            4BSD
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