import oe.path class NotFoundError(bb.BBHandledException): def __init__(self, path): self.path = path def __str__(self): return "Error: %s not found." % self.path class CmdError(bb.BBHandledException): def __init__(self, command, exitstatus, output): self.command = command self.status = exitstatus self.output = output def __str__(self): return "Command Error: '%s' exited with %d Output:\n%s" % \ (self.command, self.status, self.output) def runcmd(args, dir = None): import pipes if dir: olddir = os.path.abspath(os.curdir) if not os.path.exists(dir): raise NotFoundError(dir) os.chdir(dir) # print("cwd: %s -> %s" % (olddir, dir)) try: args = [ pipes.quote(str(arg)) for arg in args ] cmd = " ".join(args) # print("cmd: %s" % cmd) (exitstatus, output) = oe.utils.getstatusoutput(cmd) if exitstatus != 0: raise CmdError(cmd, exitstatus >> 8, output) return output finally: if dir: os.chdir(olddir) 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 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.fetch2.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.fetch2.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() @staticmethod def getPatchedFiles(patchfile, striplevel, srcdir=None): """ Read a patch file and determine which files it will modify. Params: patchfile: the patch file to read striplevel: the strip level at which the patch is going to be applied srcdir: optional path to join onto the patched file paths Returns: A list of tuples of file path and change mode ('A' for add, 'D' for delete or 'M' for modify) """ def patchedpath(patchline): filepth = patchline.split()[1] if filepth.endswith('/dev/null'): return '/dev/null' filesplit = filepth.split(os.sep) if striplevel > len(filesplit): bb.error('Patch %s has invalid strip level %d' % (patchfile, striplevel)) return None return os.sep.join(filesplit[striplevel:]) for encoding in ['utf-8', 'latin-1']: try: copiedmode = False filelist = [] with open(patchfile) as f: for line in f: if line.startswith('--- '): patchpth = patchedpath(line) if not patchpth: break if copiedmode: addedfile = patchpth else: removedfile = patchpth elif line.startswith('+++ '): addedfile = patchedpath(line) if not addedfile: break elif line.startswith('*** '): copiedmode = True removedfile = patchedpath(line) if not removedfile: break else: removedfile = None addedfile = None if addedfile and removedfile: if removedfile == '/dev/null': mode = 'A' elif addedfile == '/dev/null': mode = 'D' else: mode = 'M' if srcdir: fullpath = os.path.abspath(os.path.join(srcdir, addedfile)) else: fullpath = addedfile filelist.append((fullpath, mode)) except UnicodeDecodeError: continue break else: raise PatchError('Unable to decode %s' % patchfile) return filelist class PatchTree(PatchSet): def __init__(self, dir, d): PatchSet.__init__(self, dir, d) self.patchdir = os.path.join(self.dir, 'patches') self.seriespath = os.path.join(self.dir, 'patches', 'series') bb.utils.mkdirhier(self.patchdir) def _appendPatchFile(self, patch, strippath): with open(self.seriespath, 'a') as f: f.write(os.path.basename(patch) + "," + strippath + "\n") shellcmd = ["cat", patch, ">" , self.patchdir + "/" + os.path.basename(patch)] runcmd(["sh", "-c", " ".join(shellcmd)], self.dir) def _removePatch(self, p): patch = {} patch['file'] = p.split(",")[0] patch['strippath'] = p.split(",")[1] self._applypatch(patch, False, True) def _removePatchFile(self, all = False): if not os.path.exists(self.seriespath): return with open(self.seriespath, 'r+') as f: patches = f.readlines() if all: for p in reversed(patches): self._removePatch(os.path.join(self.patchdir, p.strip())) patches = [] else: self._removePatch(os.path.join(self.patchdir, patches[-1].strip())) patches.pop() with open(self.seriespath, 'w') as f: for p in patches: f.write(p) 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 = ["cat", patch['file'], "|", "patch", "-p", patch['strippath']] if reverse: shellcmd.append('-R') if not run: return "sh" + "-c" + " ".join(shellcmd) if not force: shellcmd.append('--dry-run') try: output = runcmd(["sh", "-c", " ".join(shellcmd)], self.dir) if force: return shellcmd.pop(len(shellcmd) - 1) output = runcmd(["sh", "-c", " ".join(shellcmd)], self.dir) except CmdError as err: raise bb.BBHandledException("Applying '%s' failed:\n%s" % (os.path.basename(patch['file']), err.output)) if not reverse: self._appendPatchFile(patch['file'], patch['strippath']) return output def Push(self, force = False, all = False, run = True): bb.note("self._current is %s" % self._current) bb.note("patches is %s" % self.patches) if all: for i in self.patches: bb.note("applying patch %s" % i) self._applypatch(i, force) self._current = i else: if self._current is not None: next = self._current + 1 else: next = 0 bb.note("applying patch %s" % self.patches[next]) ret = self._applypatch(self.patches[next], force) self._current = next return ret def Pop(self, force = None, all = None): if all: self._removePatchFile(True) self._current = None else: self._removePatchFile(False) if self._current == 0: self._current = None if self._current is not None: self._current = self._current - 1 def Clean(self): """""" self.Pop(all=True) class GitApplyTree(PatchTree): patch_line_prefix = '%% original patch' ignore_commit_prefix = '%% ignore' def __init__(self, dir, d): PatchTree.__init__(self, dir, d) @staticmethod def extractPatchHeader(patchfile): """ Extract just the header lines from the top of a patch file """ for encoding in ['utf-8', 'latin-1']: lines = [] try: with open(patchfile, 'r', encoding=encoding) as f: for line in f: if line.startswith('Index: ') or line.startswith('diff -') or line.startswith('---'): break lines.append(line) except UnicodeDecodeError: continue break else: raise PatchError('Unable to find a character encoding to decode %s' % patchfile) return lines @staticmethod def decodeAuthor(line): from email.header import decode_header authorval = line.split(':', 1)[1].strip().replace('"', '') result = decode_header(authorval)[0][0] if hasattr(result, 'decode'): result = result.decode('utf-8') return result @staticmethod def interpretPatchHeader(headerlines): import re author_re = re.compile('[\S ]+ <\S+@\S+\.\S+>') outlines = [] author = None date = None subject = None for line in headerlines: if line.startswith('Subject: '): subject = line.split(':', 1)[1] # Remove any [PATCH][oe-core] etc. subject = re.sub(r'\[.+?\]\s*', '', subject) continue elif line.startswith('From: ') or line.startswith('Author: '): authorval = GitApplyTree.decodeAuthor(line) # git is fussy about author formatting i.e. it must be Name if author_re.match(authorval): author = authorval continue elif line.startswith('Date: '): if date is None: dateval = line.split(':', 1)[1].strip() # Very crude check for date format, since git will blow up if it's not in the right # format. Without e.g. a python-dateutils dependency we can't do a whole lot more if len(dateval) > 12: date = dateval continue elif not author and line.lower().startswith('signed-off-by: '): authorval = GitApplyTree.decodeAuthor(line) # git is fussy about author formatting i.e. it must be Name if author_re.match(authorval): author = authorval outlines.append(line) return outlines, author, date, subject @staticmethod def prepareCommit(patchfile): """ Prepare a git commit command line based on the header from a patch file (typically this is useful for patches that cannot be applied with "git am" due to formatting) """ import tempfile # Process patch header and extract useful information lines = GitApplyTree.extractPatchHeader(patchfile) outlines, author, date, subject = GitApplyTree.interpretPatchHeader(lines) if not author or not subject: try: shellcmd = ["git", "log", "--format=email", "--diff-filter=A", "--", patchfile] out = runcmd(["sh", "-c", " ".join(shellcmd)], os.path.dirname(patchfile)) except CmdError: out = None if out: _, newauthor, newdate, newsubject = GitApplyTree.interpretPatchHeader(out.splitlines()) if not author or not date: # These really need to go together author = newauthor date = newdate if not subject: subject = newsubject if subject: outlines.insert(0, '%s\n\n' % subject.strip()) # Write out commit message to a file with tempfile.NamedTemporaryFile('w', delete=False) as tf: tmpfile = tf.name for line in outlines: tf.write(line) # Prepare git command cmd = ["git", "commit", "-F", tmpfile] # git doesn't like plain email addresses as authors if author and '<' in author: cmd.append('--author="%s"' % author) if date: cmd.append('--date="%s"' % date) return (tmpfile, cmd) @staticmethod def extractPatches(tree, startcommit, outdir, paths=None): import tempfile import shutil tempdir = tempfile.mkdtemp(prefix='oepatch') try: shellcmd = ["git", "format-patch", startcommit, "-o", tempdir] if paths: shellcmd.append('--') shellcmd.extend(paths) out = runcmd(["sh", "-c", " ".join(shellcmd)], tree) if out: for srcfile in out.split(): patchlines = [] outfile = None with open(srcfile, 'r') as f: for line in f: if line.startswith(GitApplyTree.patch_line_prefix): outfile = line.split()[-1].strip() continue if line.startswith(GitApplyTree.ignore_commit_prefix): continue patchlines.append(line) if not outfile: outfile = os.path.basename(srcfile) with open(os.path.join(outdir, outfile), 'w') as of: for line in patchlines: of.write(line) finally: shutil.rmtree(tempdir) def _applypatch(self, patch, force = False, reverse = False, run = True): import shutil def _applypatchhelper(shellcmd, patch, force = False, reverse = False, run = True): if reverse: shellcmd.append('-R') shellcmd.append(patch['file']) if not run: return "sh" + "-c" + " ".join(shellcmd) return runcmd(["sh", "-c", " ".join(shellcmd)], self.dir) # Add hooks which add a pointer to the original patch file name in the commit message reporoot = (runcmd("git rev-parse --show-toplevel".split(), self.dir) or '').strip() if not reporoot: raise Exception("Cannot get repository root for directory %s" % self.dir) hooks_dir = os.path.join(reporoot, '.git', 'hooks') hooks_dir_backup = hooks_dir + '.devtool-orig' if os.path.lexists(hooks_dir_backup): raise Exception("Git hooks backup directory already exists: %s" % hooks_dir_backup) if os.path.lexists(hooks_dir): shutil.move(hooks_dir, hooks_dir_backup) os.mkdir(hooks_dir) commithook = os.path.join(hooks_dir, 'commit-msg') applyhook = os.path.join(hooks_dir, 'applypatch-msg') with open(commithook, 'w') as f: # NOTE: the formatting here is significant; if you change it you'll also need to # change other places which read it back f.write('echo >> $1\n') f.write('echo "%s: $PATCHFILE" >> $1\n' % GitApplyTree.patch_line_prefix) os.chmod(commithook, 0o755) shutil.copy2(commithook, applyhook) try: patchfilevar = 'PATCHFILE="%s"' % os.path.basename(patch['file']) try: shellcmd = [patchfilevar, "git", "--work-tree=%s" % reporoot, "am", "-3", "--keep-cr", "-p%s" % patch['strippath']] return _applypatchhelper(shellcmd, patch, force, reverse, run) except CmdError: # Need to abort the git am, or we'll still be within it at the end try: shellcmd = ["git", "--work-tree=%s" % reporoot, "am", "--abort"] runcmd(["sh", "-c", " ".join(shellcmd)], self.dir) except CmdError: pass # git am won't always clean up after itself, sadly, so... shellcmd = ["git", "--work-tree=%s" % reporoot, "reset", "--hard", "HEAD"] runcmd(["sh", "-c", " ".join(shellcmd)], self.dir) # Also need to take care of any stray untracked files shellcmd = ["git", "--work-tree=%s" % reporoot, "clean", "-f"] runcmd(["sh", "-c", " ".join(shellcmd)], self.dir) # Fall back to git apply shellcmd = ["git", "--git-dir=%s" % reporoot, "apply", "-p%s" % patch['strippath']] try: output = _applypatchhelper(shellcmd, patch, force, reverse, run) except CmdError: # Fall back to patch output = PatchTree._applypatch(self, patch, force, reverse, run) # Add all files shellcmd = ["git", "add", "-f", "-A", "."] output += runcmd(["sh", "-c", " ".join(shellcmd)], self.dir) # Exclude the patches directory shellcmd = ["git", "reset", "HEAD", self.patchdir] output += runcmd(["sh", "-c", " ".join(shellcmd)], self.dir) # Commit the result (tmpfile, shellcmd) = self.prepareCommit(patch['file']) try: shellcmd.insert(0, patchfilevar) output += runcmd(["sh", "-c", " ".join(shellcmd)], self.dir) finally: os.remove(tmpfile) return output finally: shutil.rmtree(hooks_dir) if os.path.lexists(hooks_dir_backup): shutil.move(hooks_dir_backup, hooks_dir) class QuiltTree(PatchSet): def _runcmd(self, args, run = True): quiltrc = self.d.getVar('QUILTRCFILE', True) if not run: return ["quilt"] + ["--quiltrc"] + [quiltrc] + args runcmd(["quilt"] + ["--quiltrc"] + [quiltrc] + args, self.dir) 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 NotFoundError(self.dir) if os.path.exists(seriespath): with open(seriespath, 'r') as f: for line in f.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) # determine which patches are applied -> self._current try: output = runcmd(["quilt", "applied"], self.dir) except CmdError: import sys if sys.exc_value.output.strip() == "No patches applied": return else: 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"]), force=True) with open(os.path.join(self.dir, "patches", "series"), "a") as f: f.write(os.path.basename(patch["file"]) + " -p" + patch["strippath"] + "\n") 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.fetch.decodeurl(patch["remote"]) if type == "file": import shutil if not patch.get("file") and patch.get("remote"): patch["file"] = bb.fetch2.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, terminal): raise NotImplementedError() def Resolve(self): raise NotImplementedError() def Revert(self): raise NotImplementedError() def Finalize(self): raise NotImplementedError() class NOOPResolver(Resolver): def __init__(self, patchset, terminal): self.patchset = patchset self.terminal = terminal 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 # 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, terminal): self.patchset = patchset self.terminal = terminal # 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 CmdError as v: # Patch application failed patchcmd = self.patchset.Push(True, False, False) t = self.patchset.d.getVar('T', True) if not t: bb.msg.fatal("Build", "T not set") bb.utils.mkdirhier(t) import random rcfile = "%s/bashrc.%s.%s" % (t, str(os.getpid()), random.random()) with open(rcfile, "w") as f: 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") os.chmod(rcfile, 0o775) self.terminal("bash --rcfile " + rcfile, 'Patch Rejects: Please fix patch rejects manually', self.patchset.d) # 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)