summaryrefslogtreecommitdiffstats
path: root/lib/oe/patch.py
blob: 29d51027757ce0ccd43ea9a5fef9e631f679817b (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
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
import subprocess
import os
import oe.path
import oe.process

class PatchError(Exception):
    def __init__(self, msg):
        self.msg = msg

    def __str__(self):
        return "Patch Error: %s" % self.msg

class PatchSet(object):
    defaults = {
        "strippath": 1
    }

    def __init__(self, dir, d):
        self.dir = dir
        self.d = d
        self.patches = []
        self._current = None
        self.env = {"PATH": d.getVar("PATH", True)}

    def current(self):
        return self._current

    def Clean(self):
        """
        Clean out the patch set.  Generally includes unapplying all
        patches and wiping out all associated metadata.
        """
        raise NotImplementedError()

    def Import(self, patch, force):
        if not patch.get("file"):
            if not patch.get("remote"):
                raise PatchError("Patch file must be specified in patch import.")
            else:
                patch["file"] = bb.fetch.localpath(patch["remote"], self.d)

        for param in PatchSet.defaults:
            if not patch.get(param):
                patch[param] = PatchSet.defaults[param]

        if patch.get("remote"):
            patch["file"] = bb.data.expand(bb.fetch.localpath(patch["remote"], self.d), self.d)

        patch["filemd5"] = bb.utils.md5_file(patch["file"])

    def Push(self, force):
        raise NotImplementedError()

    def Pop(self, force):
        raise NotImplementedError()

    def Refresh(self, remote = None, all = None):
        raise NotImplementedError()


class PatchTree(PatchSet):
    def __init__(self, dir, d):
        PatchSet.__init__(self, dir, d)

    def Import(self, patch, force = None):
        """"""
        PatchSet.Import(self, patch, force)

        if self._current is not None:
            i = self._current + 1
        else:
            i = 0
        self.patches.insert(i, patch)

    def _applypatch(self, patch, force = False, reverse = False, run = True):
        shellcmd = ["patch", "-p%s" % patch['strippath']]
        if reverse:
            shellcmd.append('-R')

        if not run:
            return subprocess.list2cmdline(shellcmd)

        if force:
            shellcmd.append('-f')

        patch = open(patch['file'], "r")
        return oe.process.run(shellcmd, cwd=self.dir, env=self.env, stdin=patch)

    def Push(self, force = False, all = False, run = True):
        if all:
            for i in self.patches:
                if self._current is not None:
                    self._current = self._current + 1
                else:
                    self._current = 0
                self._applypatch(i, force)
        else:
            if self._current is not None:
                self._current = self._current + 1
            else:
                self._current = 0
            return self._applypatch(self.patches[self._current], force)


    def Pop(self, force = None, all = None):
        if all:
            for i in self.patches:
                self._applypatch(i, force, True)
        else:
            self._applypatch(self.patches[self._current], force, True)

    def Clean(self):
        """"""

class GitApplyTree(PatchTree):
    def __init__(self, dir, d):
        PatchTree.__init__(self, dir, d)

    def _applypatch(self, patch, force = False, reverse = False, run = True):
        shellcmd = ["git", "--git-dir=.", "apply", "-p%s" % patch['strippath']]

        if reverse:
            shellcmd.append('-R')

        shellcmd.append(patch['file'])

        if not run:
            return subprocess.list2cmdline(shellcmd)

        return oe.process.run(shellcmd, cwd=self.dir, env=self.env)


class QuiltTree(PatchSet):
    def _runcmd(self, args, run = True):
        quiltrc = bb.data.getVar('QUILTRCFILE', self.d, 1) or '-'
        cmdline = ["quilt", "--quiltrc=%s" % quiltrc] + args
        if not run:
            return subprocess.list2cmdline(cmdline)
        oe.process.run(cmdline, cwd=self.dir, env=self.env)

    def _quiltpatchpath(self, file):
        return os.path.join(self.dir, "patches", os.path.basename(file))


    def __init__(self, dir, d):
        PatchSet.__init__(self, dir, d)
        self.initialized = False
        p = os.path.join(self.dir, 'patches')
        if not os.path.exists(p):
            os.makedirs(p)

    def Clean(self):
        try:
            self._runcmd(["pop", "-a", "-f"])
            oe.path.remove(os.path.join(self.dir, "patches","series"))
        except Exception:
            pass
        self.initialized = True

    def InitFromDir(self):
        # read series -> self.patches
        seriespath = os.path.join(self.dir, 'patches', 'series')
        if not os.path.exists(self.dir):
            raise Exception("Error: %s does not exist." % self.dir)
        if os.path.exists(seriespath):
            series = file(seriespath, 'r')
            for line in series.readlines():
                patch = {}
                parts = line.strip().split()
                patch["quiltfile"] = self._quiltpatchpath(parts[0])
                patch["quiltfilemd5"] = bb.utils.md5_file(patch["quiltfile"])
                if len(parts) > 1:
                    patch["strippath"] = parts[1][2:]
                self.patches.append(patch)
            series.close()

            # determine which patches are applied -> self._current
            try:
                output = oe.process.run(["quilt", "applied"], cwd=self.dir, \
                                        env=self.env)
            except oe.process.ExecutionError, exc:
                if exc.stdout.strip() != "No patches applied":
                    raise
            output = [val for val in output.split('\n') if not val.startswith('#')]
            for patch in self.patches:
                if os.path.basename(patch["quiltfile"]) == output[-1]:
                    self._current = self.patches.index(patch)
        self.initialized = True

    def Import(self, patch, force = None):
        if not self.initialized:
            self.InitFromDir()
        PatchSet.Import(self, patch, force)
        oe.path.symlink(patch["file"], self._quiltpatchpath(patch["file"]))
        f = open(os.path.join(self.dir, "patches","series"), "a");
        f.write(os.path.basename(patch["file"]) + " -p" + patch["strippath"]+"\n")
        f.close()
        patch["quiltfile"] = self._quiltpatchpath(patch["file"])
        patch["quiltfilemd5"] = bb.utils.md5_file(patch["quiltfile"])

        # TODO: determine if the file being imported:
        #      1) is already imported, and is the same
        #      2) is already imported, but differs

        self.patches.insert(self._current or 0, patch)


    def Push(self, force = False, all = False, run = True):
        # quilt push [-f]

        args = ["push"]
        if force:
            args.append("-f")
        if all:
            args.append("-a")
        if not run:
            return self._runcmd(args, run)

        self._runcmd(args)

        if self._current is not None:
            self._current = self._current + 1
        else:
            self._current = 0

    def Pop(self, force = None, all = None):
        # quilt pop [-f]
        args = ["pop"]
        if force:
            args.append("-f")
        if all:
            args.append("-a")

        self._runcmd(args)

        if self._current == 0:
            self._current = None

        if self._current is not None:
            self._current = self._current - 1

    def Refresh(self, **kwargs):
        if kwargs.get("remote"):
            patch = self.patches[kwargs["patch"]]
            if not patch:
                raise PatchError("No patch found at index %s in patchset." % kwargs["patch"])
            (type, host, path, user, pswd, parm) = bb.decodeurl(patch["remote"])
            if type == "file":
                import shutil
                if not patch.get("file") and patch.get("remote"):
                    patch["file"] = bb.fetch.localpath(patch["remote"], self.d)

                shutil.copyfile(patch["quiltfile"], patch["file"])
            else:
                raise PatchError("Unable to do a remote refresh of %s, unsupported remote url scheme %s." % (os.path.basename(patch["quiltfile"]), type))
        else:
            # quilt refresh
            args = ["refresh"]
            if kwargs.get("quiltfile"):
                args.append(os.path.basename(kwargs["quiltfile"]))
            elif kwargs.get("patch"):
                args.append(os.path.basename(self.patches[kwargs["patch"]]["quiltfile"]))
            self._runcmd(args)

class Resolver(object):
    def __init__(self, patchset):
        raise NotImplementedError()

    def Resolve(self):
        raise NotImplementedError()

    def Revert(self):
        raise NotImplementedError()

    def Finalize(self):
        raise NotImplementedError()

class NOOPResolver(Resolver):
    def __init__(self, patchset):
        self.patchset = patchset

    def Resolve(self):
        olddir = os.path.abspath(os.curdir)
        os.chdir(self.patchset.dir)
        try:
            self.patchset.Push()
        except Exception:
            import sys
            os.chdir(olddir)
            raise sys.exc_value

# Patch resolver which relies on the user doing all the work involved in the
# resolution, with the exception of refreshing the remote copy of the patch
# files (the urls).
class UserResolver(Resolver):
    def __init__(self, patchset):
        self.patchset = patchset

    # Force a push in the patchset, then drop to a shell for the user to
    # resolve any rejected hunks
    def Resolve(self):

        olddir = os.path.abspath(os.curdir)
        os.chdir(self.patchset.dir)
        try:
            self.patchset.Push(False)
        except oe.process.CmdError:
            # Patch application failed
            patchcmd = self.patchset.Push(True, False, False)

            t = bb.data.getVar('T', self.patchset.d, 1)
            if not t:
                bb.msg.fatal(bb.msg.domain.Build, "T not set")
            bb.mkdirhier(t)
            import random
            rcfile = "%s/bashrc.%s.%s" % (t, str(os.getpid()), random.random())
            f = open(rcfile, "w")
            f.write("echo '*** Manual patch resolution mode ***'\n")
            f.write("echo 'Dropping to a shell, so patch rejects can be fixed manually.'\n")
            f.write("echo 'Run \"quilt refresh\" when patch is corrected, press CTRL+D to exit.'\n")
            f.write("echo ''\n")
            f.write(" ".join(patchcmd) + "\n")
            f.write("#" + bb.data.getVar('TERMCMDRUN', self.patchset.d, 1))
            f.close()
            os.chmod(rcfile, 0775)

            os.environ['TERMWINDOWTITLE'] = "Bitbake: Please fix patch rejects manually"
            os.environ['TERMRCFILE'] = rcfile
            rc = os.system(bb.data.getVar('TERMCMDRUN', self.patchset.d, 1))
            if os.WIFEXITED(rc) and os.WEXITSTATUS(rc) != 0:
                bb.msg.fatal(bb.msg.domain.Build, ("Cannot proceed with manual patch resolution - '%s' not found. " \
                    + "Check TERMCMDRUN variable.") % bb.data.getVar('TERMCMDRUN', self.patchset.d, 1))

            # Construct a new PatchSet after the user's changes, compare the
            # sets, checking patches for modifications, and doing a remote
            # refresh on each.
            oldpatchset = self.patchset
            self.patchset = oldpatchset.__class__(self.patchset.dir, self.patchset.d)

            for patch in self.patchset.patches:
                oldpatch = None
                for opatch in oldpatchset.patches:
                    if opatch["quiltfile"] == patch["quiltfile"]:
                        oldpatch = opatch

                if oldpatch:
                    patch["remote"] = oldpatch["remote"]
                    if patch["quiltfile"] == oldpatch["quiltfile"]:
                        if patch["quiltfilemd5"] != oldpatch["quiltfilemd5"]:
                            bb.note("Patch %s has changed, updating remote url %s" % (os.path.basename(patch["quiltfile"]), patch["remote"]))
                            # user change?  remote refresh
                            self.patchset.Refresh(remote=True, patch=self.patchset.patches.index(patch))
                        else:
                            # User did not fix the problem.  Abort.
                            raise PatchError("Patch application failed, and user did not fix and refresh the patch.")
        except Exception:
            os.chdir(olddir)
            raise
        os.chdir(olddir)