Query: syscall
OS: osx
Section: 2
Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar
SYSCALL(2) BSD System Calls Manual SYSCALL(2)NAMEsyscall -- indirect system callSYNOPSIS#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 con- stants for system calls can be found in the header file <sys/syscall.h>. This function is useful for testing new system calls that do not have entries in the C library.RETURN VALUESThe return values are defined by the system call being invoked. In general, a 0 return value indicates success. A -1 return value indicates an error, and an error code is stored in errno.BUGSThere is no way to simulate system calls that have multiple return values such as pipe(2).HISTORYThe syscall() function call appeared in 4.0BSD. 4th Berkeley Distribution June 23, 2008 4th Berkeley Distribution