The System Calls Dispatch Table (Cont.)

The 'sys_call_table' symbol is exported by the kernel ('/usr/src/linux/kernel/ksyms.c'), so we may access it from within kernel modules.

All system calls are invoked using a software interrupt (0x80 on Intel architecture), which executes the 'system_call' assembly routine, whose code is also found in 'entry.S'.