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#!/usr/bin/env python
"""
Generates the SYSCALL_PROTOTYPES dictionary from the Linux kernel source
and prints out Python code representing it.
"""
import urllib2
import re
url = "https://raw.githubusercontent.com/torvalds/linux/master/include/linux/syscalls.h"
source = urllib2.urlopen(url).read()
p1 = re.compile(r"^asmlinkage long sys(?:32)?_(.*?)\((.*?)\)",
re.MULTILINE | re.DOTALL)
p2 = re.compile(r"^(.*?)([^ *]+)$")
SYSCALL_PROTOTYPES = {}
for m1 in p1.finditer(source):
call_name = m1.group(1)
args = m1.group(2)
args = args.replace("__user", "")
args = " ".join(args.split())
args_tuple = ()
if args != "void":
for arg in args.split(","):
if arg.endswith(("*", "long", "int", "size_t")):
arg_type = arg.strip()
arg_name = ""
else:
m2 = p2.match(arg)
arg_type = m2.group(1).strip()
arg_name = m2.group(2).strip()
# Workaround for pipe system call
if (call_name == 'pipe' or call_name == 'pipe2') and arg_type == "int *":
arg_type = "int[2]"
args_tuple += ((arg_type, arg_name),)
SYSCALL_PROTOTYPES[call_name] = ("long", args_tuple)
for call_name in sorted(SYSCALL_PROTOTYPES):
signature = SYSCALL_PROTOTYPES[call_name]
args_tuple = signature[1]
print('"%s": ("%s", (' % (call_name, signature[0]))
for arg in args_tuple:
print((' ("%s", "%s"),' % (arg[0], arg[1])))
print(')),')
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