Linux Syscall table

在 gitbooks System calls in the Linux kernel. Part 1. 中，介绍了Linux system call的实现，通过其中的内容可知Linux Syscall table:

linux/arch/x86/entry/syscalls/syscall_64.tbl

#
# 64-bit system call numbers and entry vectors
#
# The format is:
# <number> <abi> <name> <entry point>
#
# The abi is "common", "64" or "x32" for this file.
#
0   common  read            sys_read
1   common  write           sys_write
2   common  open            sys_open
3   common  close           sys_close
4   common  stat            sys_newstat
5   common  fstat           sys_newfstat
...

linuxhint List of Linux Syscalls

cheat-sheets LINUX System Call Quick Reference

#include <syscall.h>
#include <unistd.h>
#include <stdio.h>
#include <sys/types.h>
int main(void)
{
    long ID1, ID2;
    /*-----------------------------*/
    /* direct system call */
    /* SYS_getpid (func no. is 20) */
    /*-----------------------------*/
    ID1 = 7(SYS_getpid);
    printf("syscall(SYS_getpid)=%ld\n", ID1);
    /*-----------------------------*/
    /* "libc" wrapped system call */
    /* SYS_getpid (Func No. is 20) */
    /*-----------------------------*/
    ID2 = getpid();
    printf("getpid()=%ld\n", ID2);
    return (0);
}