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1#!/usr/bin/env python
2#
3import sys, cpp, kernel, glob, os, re, getopt, clean_header, subprocess, shutil
4from defaults import *
5from utils import *
6
7def usage():
8    print """\
9  usage: %(progname)s [kernel-original-path] [kernel-modified-path]
10
11    this program is used to update all the auto-generated clean headers
12    used by the Bionic C library. it assumes the following:
13
14      - a set of source kernel headers is located in
15        'external/kernel-headers/original', relative to the current
16        android tree
17
18      - a set of manually modified kernel header files located in
19        'external/kernel-headers/modified', relative to the current
20        android tree
21
22      - the clean headers will be placed in 'bionic/libc/kernel/arch-<arch>/asm',
23        'bionic/libc/kernel/android', etc..
24""" % { "progname" : os.path.basename(sys.argv[0]) }
25    sys.exit(0)
26
27def processFiles(updater, original_dir, modified_dir, src_rel_dir, update_rel_dir):
28    # Delete the old headers before updating to the new headers.
29    update_dir = os.path.join(get_kernel_dir(), update_rel_dir)
30    shutil.rmtree(update_dir)
31    os.mkdir(update_dir, 0755)
32
33    src_dir = os.path.normpath(os.path.join(original_dir, src_rel_dir))
34    src_dir_len = len(src_dir) + 1
35    mod_src_dir = os.path.join(modified_dir, src_rel_dir)
36    update_dir = os.path.join(get_kernel_dir(), update_rel_dir)
37
38    kernel_dir = get_kernel_dir()
39    for root, _, files in os.walk(src_dir):
40        for file in sorted(files):
41            _, ext = os.path.splitext(file)
42            if ext != ".h":
43                continue
44            src_file = os.path.normpath(os.path.join(root, file))
45            rel_path = src_file[src_dir_len:]
46            # Check to see if there is a modified header to use instead.
47            if os.path.exists(os.path.join(mod_src_dir, rel_path)):
48                src_file = os.path.join(mod_src_dir, rel_path)
49                src_str = os.path.join("<modified>", src_rel_dir, rel_path)
50            else:
51                src_str = os.path.join("<original>", src_rel_dir, rel_path)
52            dst_file = os.path.join(update_dir, rel_path)
53            new_data = clean_header.cleanupFile(dst_file, src_file, rel_path)
54            if not new_data:
55                continue
56            updater.readFile(dst_file)
57            ret_val = updater.editFile(dst_file, new_data)
58            if ret_val == 0:
59                state = "unchanged"
60            elif ret_val == 1:
61                state = "edited"
62            else:
63                state = "added"
64            update_path = os.path.join(update_rel_dir, rel_path)
65            print "cleaning %s -> %s (%s)" % (src_str, update_path, state)
66
67try:
68    optlist, args = getopt.getopt(sys.argv[1:], '')
69except:
70    # Unrecognized option
71    sys.stderr.write("error: unrecognized option\n")
72    usage()
73
74if len(optlist) > 0 or len(args) > 2:
75    usage()
76
77if len(args) > 0:
78    original_dir = args[0]
79else:
80    original_dir = get_kernel_headers_original_dir()
81
82if len(args) > 1:
83    modified_dir = args[1]
84else:
85    modified_dir = get_kernel_headers_modified_dir()
86
87if not os.path.isdir(original_dir):
88    panic("The kernel directory %s is not a directory\n" % original_dir)
89
90if not os.path.isdir(modified_dir):
91    panic("The kernel modified directory %s is not a directory\n" % modified_dir)
92
93updater = BatchFileUpdater()
94# Process the original uapi headers first.
95processFiles(updater, original_dir, modified_dir, "uapi", "uapi"),
96
97# Now process the special files.
98processFiles(updater, original_dir, modified_dir, "scsi", os.path.join("android", "scsi", "scsi"))
99
100updater.updateGitFiles()
101