#!/usr/bin/env python
|
|
import argparse
|
import collections
|
import logging
|
import os
|
import re
|
import subprocess
|
import textwrap
|
|
from gensyscalls import SysCallsTxtParser
|
from genseccomp import parse_syscall_NRs
|
|
def load_syscall_names_from_file(file_path, architecture):
|
parser = SysCallsTxtParser()
|
parser.parse_open_file(open(file_path))
|
arch_map = {}
|
for syscall in parser.syscalls:
|
if syscall.get(architecture):
|
arch_map[syscall["func"]] = syscall["name"];
|
|
return arch_map
|
|
def gen_syscall_nrs(out_file, base_syscall_file, syscall_NRs):
|
for arch in ('arm', 'arm64', 'mips', 'mips64', 'x86', 'x86_64'):
|
base_names = load_syscall_names_from_file(base_syscall_file, arch)
|
|
for func,syscall in base_names.iteritems():
|
out_file.write("#define __" + arch + "_" + func + " " + str(syscall_NRs[arch][syscall]) + ";\n")
|
|
def main():
|
parser = argparse.ArgumentParser(
|
description="Generates a mapping of bionic functions to system call numbers per architecture.")
|
parser.add_argument("--verbose", "-v", help="Enables verbose logging.")
|
parser.add_argument("--out-dir",
|
help="The output directory for the output files")
|
parser.add_argument("base_file", metavar="base-file", type=str,
|
help="The path of the base syscall list (SYSCALLS.TXT).")
|
parser.add_argument("files", metavar="FILE", type=str, nargs="+",
|
help=("A syscall name-number mapping file for an architecture.\n"))
|
args = parser.parse_args()
|
|
if args.verbose:
|
logging.basicConfig(level=logging.DEBUG)
|
else:
|
logging.basicConfig(level=logging.INFO)
|
|
syscall_files = []
|
syscall_NRs = {}
|
for filename in args.files:
|
m = re.search(r"libseccomp_gen_syscall_nrs_([^/]+)", filename)
|
syscall_NRs[m.group(1)] = parse_syscall_NRs(filename)
|
|
output_path = os.path.join(args.out_dir, "func_to_syscall_nrs.h")
|
with open(output_path, "w") as output_file:
|
gen_syscall_nrs(out_file=output_file,
|
syscall_NRs=syscall_NRs, base_syscall_file=args.base_file)
|
|
if __name__ == "__main__":
|
main()
|
