aboutsummaryrefslogtreecommitdiffstats
path: root/meta/lib/oe/package.py
blob: b59513227baa0ea6a12ffabe9352469718e38244 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
#
# SPDX-License-Identifier: GPL-2.0-only
#

import stat
import mmap
import subprocess

def runstrip(arg):
    # Function to strip a single file, called from split_and_strip_files below
    # A working 'file' (one which works on the target architecture)
    #
    # The elftype is a bit pattern (explained in is_elf below) to tell
    # us what type of file we're processing...
    # 4 - executable
    # 8 - shared library
    # 16 - kernel module

    (file, elftype, strip) = arg

    newmode = None
    if not os.access(file, os.W_OK) or os.access(file, os.R_OK):
        origmode = os.stat(file)[stat.ST_MODE]
        newmode = origmode | stat.S_IWRITE | stat.S_IREAD
        os.chmod(file, newmode)

    stripcmd = [strip]
    skip_strip = False
    # kernel module    
    if elftype & 16:
        if is_kernel_module_signed(file):
            bb.debug(1, "Skip strip on signed module %s" % file)
            skip_strip = True
        else:
            stripcmd.extend(["--strip-debug", "--remove-section=.comment",
                "--remove-section=.note", "--preserve-dates"])
    # .so and shared library
    elif ".so" in file and elftype & 8:
        stripcmd.extend(["--remove-section=.comment", "--remove-section=.note", "--strip-unneeded"])
    # shared or executable:
    elif elftype & 8 or elftype & 4:
        stripcmd.extend(["--remove-section=.comment", "--remove-section=.note"])

    stripcmd.append(file)
    bb.debug(1, "runstrip: %s" % stripcmd)

    if not skip_strip:
        output = subprocess.check_output(stripcmd, stderr=subprocess.STDOUT)

    if newmode:
        os.chmod(file, origmode)

# Detect .ko module by searching for "vermagic=" string
def is_kernel_module(path):
    with open(path) as f:
        return mmap.mmap(f.fileno(), 0, prot=mmap.PROT_READ).find(b"vermagic=") >= 0

# Detect if .ko module is signed
def is_kernel_module_signed(path):
    with open(path, "rb") as f:
        f.seek(-28, 2)
        module_tail = f.read()
        return "Module signature appended" in "".join(chr(c) for c in bytearray(module_tail))

# Return type (bits):
# 0 - not elf
# 1 - ELF
# 2 - stripped
# 4 - executable
# 8 - shared library
# 16 - kernel module
def is_elf(path):
    exec_type = 0
    result = subprocess.check_output(["file", "-b", path], stderr=subprocess.STDOUT).decode("utf-8")

    if "ELF" in result:
        exec_type |= 1
        if "not stripped" not in result:
            exec_type |= 2
        if "executable" in result:
            exec_type |= 4
        if "shared" in result:
            exec_type |= 8
        if "relocatable" in result:
            if path.endswith(".ko") and path.find("/lib/modules/") != -1 and is_kernel_module(path):
                exec_type |= 16
    return (path, exec_type)

def is_static_lib(path):
    if path.endswith('.a') and not os.path.islink(path):
        with open(path, 'rb') as fh:
            # The magic must include the first slash to avoid
            # matching golang static libraries
            magic = b'!<arch>\x0a/'
            start = fh.read(len(magic))
            return start == magic
    return False

def strip_execs(pn, dstdir, strip_cmd, libdir, base_libdir, d, qa_already_stripped=False):
    """
    Strip executable code (like executables, shared libraries) _in_place_
    - Based on sysroot_strip in staging.bbclass
    :param dstdir: directory in which to strip files
    :param strip_cmd: Strip command (usually ${STRIP})
    :param libdir: ${libdir} - strip .so files in this directory
    :param base_libdir: ${base_libdir} - strip .so files in this directory
    :param qa_already_stripped: Set to True if already-stripped' in ${INSANE_SKIP}
    This is for proper logging and messages only.
    """
    import stat, errno, oe.path, oe.utils

    elffiles = {}
    inodes = {}
    libdir = os.path.abspath(dstdir + os.sep + libdir)
    base_libdir = os.path.abspath(dstdir + os.sep + base_libdir)
    exec_mask = stat.S_IXUSR | stat.S_IXGRP | stat.S_IXOTH
    #
    # First lets figure out all of the files we may have to process
    #
    checkelf = []
    inodecache = {}
    for root, dirs, files in os.walk(dstdir):
        for f in files:
            file = os.path.join(root, f)

            try:
                ltarget = oe.path.realpath(file, dstdir, False)
                s = os.lstat(ltarget)
            except OSError as e:
                (err, strerror) = e.args
                if err != errno.ENOENT:
                    raise
                # Skip broken symlinks
                continue
            if not s:
                continue
            # Check its an excutable
            if s[stat.ST_MODE] & exec_mask \
                    or ((file.startswith(libdir) or file.startswith(base_libdir)) and ".so" in f) \
                    or file.endswith('.ko'):
                # If it's a symlink, and points to an ELF file, we capture the readlink target
                if os.path.islink(file):
                    continue

                # It's a file (or hardlink), not a link
                # ...but is it ELF, and is it already stripped?
                checkelf.append(file)
                inodecache[file] = s.st_ino
    results = oe.utils.multiprocess_launch(is_elf, checkelf, d)
    for (file, elf_file) in results:
                #elf_file = is_elf(file)
                if elf_file & 1:
                    if elf_file & 2:
                        if qa_already_stripped:
                            bb.note("Skipping file %s from %s for already-stripped QA test" % (file[len(dstdir):], pn))
                        else:
                            bb.warn("File '%s' from %s was already stripped, this will prevent future debugging!" % (file[len(dstdir):], pn))
                        continue

                    if inodecache[file] in inodes:
                        os.unlink(file)
                        os.link(inodes[inodecache[file]], file)
                    else:
                        # break hardlinks so that we do not strip the original.
                        inodes[inodecache[file]] = file
                        bb.utils.break_hardlinks(file)
                        elffiles[file] = elf_file

    #
    # Now strip them (in parallel)
    #
    sfiles = []
    for file in elffiles:
        elf_file = int(elffiles[file])
        sfiles.append((file, elf_file, strip_cmd))

    oe.utils.multiprocess_launch(runstrip, sfiles, d)


def file_translate(file):
    ft = file.replace("@", "@at@")
    ft = ft.replace(" ", "@space@")
    ft = ft.replace("\t", "@tab@")
    ft = ft.replace("[", "@openbrace@")
    ft = ft.replace("]", "@closebrace@")
    ft = ft.replace("_", "@underscore@")
    return ft

def filedeprunner(arg):
    import re, subprocess, shlex

    (pkg, pkgfiles, rpmdeps, pkgdest) = arg
    provides = {}
    requires = {}

    file_re = re.compile(r'\s+\d+\s(.*)')
    dep_re = re.compile(r'\s+(\S)\s+(.*)')
    r = re.compile(r'[<>=]+\s+\S*')

    def process_deps(pipe, pkg, pkgdest, provides, requires):
        file = None
        for line in pipe.split("\n"):

            m = file_re.match(line)
            if m:
                file = m.group(1)
                file = file.replace(pkgdest + "/" + pkg, "")
                file = file_translate(file)
                continue

            m = dep_re.match(line)
            if not m or not file:
                continue

            type, dep = m.groups()

            if type == 'R':
                i = requires
            elif type == 'P':
                i = provides
            else:
               continue

            if dep.startswith("python("):
                continue

            # Ignore all perl(VMS::...) and perl(Mac::...) dependencies. These
            # are typically used conditionally from the Perl code, but are
            # generated as unconditional dependencies.
            if dep.startswith('perl(VMS::') or dep.startswith('perl(Mac::'):
                continue

            # Ignore perl dependencies on .pl files.
            if dep.startswith('perl(') and dep.endswith('.pl)'):
                continue

            # Remove perl versions and perl module versions since they typically
            # do not make sense when used as package versions.
            if dep.startswith('perl') and r.search(dep):
                dep = dep.split()[0]

            # Put parentheses around any version specifications.
            dep = r.sub(r'(\g<0>)',dep)

            if file not in i:
                i[file] = []
            i[file].append(dep)

        return provides, requires

    output = subprocess.check_output(shlex.split(rpmdeps) + pkgfiles, stderr=subprocess.STDOUT).decode("utf-8")
    provides, requires = process_deps(output, pkg, pkgdest, provides, requires)

    return (pkg, provides, requires)


def read_shlib_providers(d):
    import re

    shlib_provider = {}
    shlibs_dirs = d.getVar('SHLIBSDIRS').split()
    list_re = re.compile(r'^(.*)\.list$')
    # Go from least to most specific since the last one found wins
    for dir in reversed(shlibs_dirs):
        bb.debug(2, "Reading shlib providers in %s" % (dir))
        if not os.path.exists(dir):
            continue
        for file in os.listdir(dir):
            m = list_re.match(file)
            if m:
                dep_pkg = m.group(1)
                try:
                    fd = open(os.path.join(dir, file))
                except IOError:
                    # During a build unrelated shlib files may be deleted, so
                    # handle files disappearing between the listdirs and open.
                    continue
                lines = fd.readlines()
                fd.close()
                for l in lines:
                    s = l.strip().split(":")
                    if s[0] not in shlib_provider:
                        shlib_provider[s[0]] = {}
                    shlib_provider[s[0]][s[1]] = (dep_pkg, s[2])
    return shlib_provider


def npm_split_package_dirs(pkgdir):
    """
    Work out the packages fetched and unpacked by BitBake's npm fetcher
    Returns a dict of packagename -> (relpath, package.json) ordered
    such that it is suitable for use in PACKAGES and FILES
    """
    from collections import OrderedDict
    import json
    packages = {}
    for root, dirs, files in os.walk(pkgdir):
        if os.path.basename(root) == 'node_modules':
            for dn in dirs:
                relpth = os.path.relpath(os.path.join(root, dn), pkgdir)
                pkgitems = ['${PN}']
                for pathitem in relpth.split('/'):
                    if pathitem == 'node_modules':
                        continue
                    pkgitems.append(pathitem)
                pkgname = '-'.join(pkgitems).replace('_', '-')
                pkgname = pkgname.replace('@', '')
                pkgfile = os.path.join(root, dn, 'package.json')
                data = None
                if os.path.exists(pkgfile):
                    with open(pkgfile, 'r') as f:
                        data = json.loads(f.read())
                    packages[pkgname] = (relpth, data)
    # We want the main package for a module sorted *after* its subpackages
    # (so that it doesn't otherwise steal the files for the subpackage), so
    # this is a cheap way to do that whilst still having an otherwise
    # alphabetical sort
    return OrderedDict((key, packages[key]) for key in sorted(packages, key=lambda pkg: pkg + '~'))