712 lines
22 KiB
Python
712 lines
22 KiB
Python
# ex:ts=4:sw=4:sts=4:et
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# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
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#
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# BitBake 'Build' implementation
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#
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# Core code for function execution and task handling in the
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# BitBake build tools.
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#
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# Copyright (C) 2003, 2004 Chris Larson
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#
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# Based on Gentoo's portage.py.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License version 2 as
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# published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along
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# with this program; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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#
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# Based on functions from the base bb module, Copyright 2003 Holger Schurig
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import os
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import sys
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import logging
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import shlex
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import glob
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import time
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import bb
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import bb.msg
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import bb.process
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from contextlib import nested
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from bb import event, utils
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bblogger = logging.getLogger('BitBake')
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logger = logging.getLogger('BitBake.Build')
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NULL = open(os.devnull, 'r+')
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# When we execute a Python function, we'd like certain things
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# in all namespaces, hence we add them to __builtins__.
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# If we do not do this and use the exec globals, they will
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# not be available to subfunctions.
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__builtins__['bb'] = bb
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__builtins__['os'] = os
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class FuncFailed(Exception):
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def __init__(self, name = None, logfile = None):
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self.logfile = logfile
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self.name = name
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if name:
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self.msg = 'Function failed: %s' % name
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else:
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self.msg = "Function failed"
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def __str__(self):
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if self.logfile and os.path.exists(self.logfile):
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msg = ("%s (log file is located at %s)" %
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(self.msg, self.logfile))
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else:
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msg = self.msg
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return msg
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class TaskBase(event.Event):
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"""Base class for task events"""
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def __init__(self, t, logfile, d):
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self._task = t
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self._package = d.getVar("PF", True)
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self.taskfile = d.getVar("FILE", True)
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self.taskname = self._task
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self.logfile = logfile
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self.time = time.time()
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event.Event.__init__(self)
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self._message = "recipe %s: task %s: %s" % (d.getVar("PF", True), t, self.getDisplayName())
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def getTask(self):
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return self._task
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def setTask(self, task):
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self._task = task
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def getDisplayName(self):
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return bb.event.getName(self)[4:]
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task = property(getTask, setTask, None, "task property")
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class TaskStarted(TaskBase):
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"""Task execution started"""
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def __init__(self, t, logfile, taskflags, d):
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super(TaskStarted, self).__init__(t, logfile, d)
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self.taskflags = taskflags
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class TaskSucceeded(TaskBase):
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"""Task execution completed"""
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class TaskFailed(TaskBase):
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"""Task execution failed"""
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def __init__(self, task, logfile, metadata, errprinted = False):
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self.errprinted = errprinted
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super(TaskFailed, self).__init__(task, logfile, metadata)
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class TaskFailedSilent(TaskBase):
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"""Task execution failed (silently)"""
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def getDisplayName(self):
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# Don't need to tell the user it was silent
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return "Failed"
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class TaskInvalid(TaskBase):
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def __init__(self, task, metadata):
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super(TaskInvalid, self).__init__(task, None, metadata)
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self._message = "No such task '%s'" % task
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class LogTee(object):
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def __init__(self, logger, outfile):
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self.outfile = outfile
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self.logger = logger
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self.name = self.outfile.name
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def write(self, string):
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self.logger.plain(string)
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self.outfile.write(string)
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def __enter__(self):
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self.outfile.__enter__()
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return self
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def __exit__(self, *excinfo):
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self.outfile.__exit__(*excinfo)
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def __repr__(self):
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return '<LogTee {0}>'.format(self.name)
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def flush(self):
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self.outfile.flush()
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def exec_func(func, d, dirs = None):
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"""Execute a BB 'function'"""
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body = d.getVar(func)
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if not body:
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if body is None:
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logger.warn("Function %s doesn't exist", func)
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return
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flags = d.getVarFlags(func)
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cleandirs = flags.get('cleandirs')
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if cleandirs:
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for cdir in d.expand(cleandirs).split():
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bb.utils.remove(cdir, True)
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bb.utils.mkdirhier(cdir)
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if dirs is None:
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dirs = flags.get('dirs')
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if dirs:
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dirs = d.expand(dirs).split()
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if dirs:
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for adir in dirs:
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bb.utils.mkdirhier(adir)
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adir = dirs[-1]
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else:
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adir = d.getVar('B', True)
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bb.utils.mkdirhier(adir)
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ispython = flags.get('python')
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lockflag = flags.get('lockfiles')
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if lockflag:
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lockfiles = [f for f in d.expand(lockflag).split()]
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else:
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lockfiles = None
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tempdir = d.getVar('T', True)
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# or func allows items to be executed outside of the normal
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# task set, such as buildhistory
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task = d.getVar('BB_RUNTASK', True) or func
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if task == func:
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taskfunc = task
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else:
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taskfunc = "%s.%s" % (task, func)
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runfmt = d.getVar('BB_RUNFMT', True) or "run.{func}.{pid}"
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runfn = runfmt.format(taskfunc=taskfunc, task=task, func=func, pid=os.getpid())
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runfile = os.path.join(tempdir, runfn)
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bb.utils.mkdirhier(os.path.dirname(runfile))
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# Setup the courtesy link to the runfn, only for tasks
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# we create the link 'just' before the run script is created
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# if we create it after, and if the run script fails, then the
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# link won't be created as an exception would be fired.
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if task == func:
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runlink = os.path.join(tempdir, 'run.{0}'.format(task))
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if runlink:
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bb.utils.remove(runlink)
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try:
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os.symlink(runfn, runlink)
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except OSError:
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pass
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with bb.utils.fileslocked(lockfiles):
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if ispython:
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exec_func_python(func, d, runfile, cwd=adir)
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else:
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exec_func_shell(func, d, runfile, cwd=adir)
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_functionfmt = """
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def {function}(d):
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{body}
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{function}(d)
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"""
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logformatter = bb.msg.BBLogFormatter("%(levelname)s: %(message)s")
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def exec_func_python(func, d, runfile, cwd=None):
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"""Execute a python BB 'function'"""
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bbfile = d.getVar('FILE', True)
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code = _functionfmt.format(function=func, body=d.getVar(func, True))
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bb.utils.mkdirhier(os.path.dirname(runfile))
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with open(runfile, 'w') as script:
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bb.data.emit_func_python(func, script, d)
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if cwd:
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try:
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olddir = os.getcwd()
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except OSError:
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olddir = None
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os.chdir(cwd)
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bb.debug(2, "Executing python function %s" % func)
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try:
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comp = utils.better_compile(code, func, bbfile)
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utils.better_exec(comp, {"d": d}, code, bbfile)
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except (bb.parse.SkipRecipe, bb.build.FuncFailed):
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raise
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except:
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raise FuncFailed(func, None)
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finally:
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bb.debug(2, "Python function %s finished" % func)
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if cwd and olddir:
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try:
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os.chdir(olddir)
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except OSError:
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pass
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def shell_trap_code():
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return '''#!/bin/sh\n
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# Emit a useful diagnostic if something fails:
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bb_exit_handler() {
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ret=$?
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case $ret in
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0) ;;
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*) case $BASH_VERSION in
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"") echo "WARNING: exit code $ret from a shell command.";;
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*) echo "WARNING: ${BASH_SOURCE[0]}:${BASH_LINENO[0]} exit $ret from
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\"$BASH_COMMAND\"";;
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esac
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exit $ret
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esac
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}
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trap 'bb_exit_handler' 0
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set -e
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'''
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def exec_func_shell(func, d, runfile, cwd=None):
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"""Execute a shell function from the metadata
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Note on directory behavior. The 'dirs' varflag should contain a list
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of the directories you need created prior to execution. The last
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item in the list is where we will chdir/cd to.
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"""
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# Don't let the emitted shell script override PWD
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d.delVarFlag('PWD', 'export')
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with open(runfile, 'w') as script:
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script.write(shell_trap_code())
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bb.data.emit_func(func, script, d)
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if bb.msg.loggerVerboseLogs:
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script.write("set -x\n")
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if cwd:
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script.write("cd '%s'\n" % cwd)
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script.write("%s\n" % func)
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script.write('''
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# cleanup
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ret=$?
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trap '' 0
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exit $?
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''')
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os.chmod(runfile, 0775)
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cmd = runfile
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if d.getVarFlag(func, 'fakeroot'):
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fakerootcmd = d.getVar('FAKEROOT', True)
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if fakerootcmd:
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cmd = [fakerootcmd, runfile]
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if bb.msg.loggerDefaultVerbose:
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logfile = LogTee(logger, sys.stdout)
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else:
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logfile = sys.stdout
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bb.debug(2, "Executing shell function %s" % func)
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try:
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with open(os.devnull, 'r+') as stdin:
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bb.process.run(cmd, shell=False, stdin=stdin, log=logfile)
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except bb.process.CmdError:
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logfn = d.getVar('BB_LOGFILE', True)
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raise FuncFailed(func, logfn)
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bb.debug(2, "Shell function %s finished" % func)
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def _task_data(fn, task, d):
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localdata = bb.data.createCopy(d)
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localdata.setVar('BB_FILENAME', fn)
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localdata.setVar('BB_CURRENTTASK', task[3:])
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localdata.setVar('OVERRIDES', 'task-%s:%s' %
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(task[3:].replace('_', '-'), d.getVar('OVERRIDES', False)))
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localdata.finalize()
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bb.data.expandKeys(localdata)
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return localdata
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def _exec_task(fn, task, d, quieterr):
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"""Execute a BB 'task'
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Execution of a task involves a bit more setup than executing a function,
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running it with its own local metadata, and with some useful variables set.
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"""
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if not d.getVarFlag(task, 'task'):
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event.fire(TaskInvalid(task, d), d)
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logger.error("No such task: %s" % task)
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return 1
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logger.debug(1, "Executing task %s", task)
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localdata = _task_data(fn, task, d)
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tempdir = localdata.getVar('T', True)
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if not tempdir:
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bb.fatal("T variable not set, unable to build")
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# Change nice level if we're asked to
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nice = localdata.getVar("BB_TASK_NICE_LEVEL", True)
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if nice:
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curnice = os.nice(0)
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nice = int(nice) - curnice
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newnice = os.nice(nice)
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logger.debug(1, "Renice to %s " % newnice)
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bb.utils.mkdirhier(tempdir)
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# Determine the logfile to generate
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logfmt = localdata.getVar('BB_LOGFMT', True) or 'log.{task}.{pid}'
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logbase = logfmt.format(task=task, pid=os.getpid())
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# Document the order of the tasks...
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logorder = os.path.join(tempdir, 'log.task_order')
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try:
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with open(logorder, 'a') as logorderfile:
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logorderfile.write('{0} ({1}): {2}\n'.format(task, os.getpid(), logbase))
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except OSError:
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logger.exception("Opening log file '%s'", logorder)
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pass
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# Setup the courtesy link to the logfn
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loglink = os.path.join(tempdir, 'log.{0}'.format(task))
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logfn = os.path.join(tempdir, logbase)
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if loglink:
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bb.utils.remove(loglink)
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try:
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os.symlink(logbase, loglink)
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except OSError:
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pass
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prefuncs = localdata.getVarFlag(task, 'prefuncs', expand=True)
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postfuncs = localdata.getVarFlag(task, 'postfuncs', expand=True)
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class ErrorCheckHandler(logging.Handler):
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def __init__(self):
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self.triggered = False
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logging.Handler.__init__(self, logging.ERROR)
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def emit(self, record):
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self.triggered = True
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# Handle logfiles
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si = open('/dev/null', 'r')
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try:
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bb.utils.mkdirhier(os.path.dirname(logfn))
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logfile = open(logfn, 'w')
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except OSError:
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logger.exception("Opening log file '%s'", logfn)
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pass
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# Dup the existing fds so we dont lose them
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osi = [os.dup(sys.stdin.fileno()), sys.stdin.fileno()]
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oso = [os.dup(sys.stdout.fileno()), sys.stdout.fileno()]
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ose = [os.dup(sys.stderr.fileno()), sys.stderr.fileno()]
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# Replace those fds with our own
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os.dup2(si.fileno(), osi[1])
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os.dup2(logfile.fileno(), oso[1])
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os.dup2(logfile.fileno(), ose[1])
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# Ensure Python logging goes to the logfile
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handler = logging.StreamHandler(logfile)
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handler.setFormatter(logformatter)
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# Always enable full debug output into task logfiles
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handler.setLevel(logging.DEBUG - 2)
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bblogger.addHandler(handler)
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errchk = ErrorCheckHandler()
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bblogger.addHandler(errchk)
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localdata.setVar('BB_LOGFILE', logfn)
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localdata.setVar('BB_RUNTASK', task)
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flags = localdata.getVarFlags(task)
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event.fire(TaskStarted(task, logfn, flags, localdata), localdata)
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try:
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for func in (prefuncs or '').split():
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exec_func(func, localdata)
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exec_func(task, localdata)
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for func in (postfuncs or '').split():
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exec_func(func, localdata)
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except FuncFailed as exc:
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if quieterr:
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event.fire(TaskFailedSilent(task, logfn, localdata), localdata)
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else:
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errprinted = errchk.triggered
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logger.error(str(exc))
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event.fire(TaskFailed(task, logfn, localdata, errprinted), localdata)
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return 1
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finally:
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sys.stdout.flush()
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sys.stderr.flush()
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bblogger.removeHandler(handler)
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# Restore the backup fds
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os.dup2(osi[0], osi[1])
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os.dup2(oso[0], oso[1])
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os.dup2(ose[0], ose[1])
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# Close the backup fds
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os.close(osi[0])
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os.close(oso[0])
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os.close(ose[0])
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si.close()
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logfile.close()
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if os.path.exists(logfn) and os.path.getsize(logfn) == 0:
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logger.debug(2, "Zero size logfn %s, removing", logfn)
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bb.utils.remove(logfn)
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bb.utils.remove(loglink)
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event.fire(TaskSucceeded(task, logfn, localdata), localdata)
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if not localdata.getVarFlag(task, 'nostamp') and not localdata.getVarFlag(task, 'selfstamp'):
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make_stamp(task, localdata)
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return 0
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def exec_task(fn, task, d, profile = False):
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try:
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quieterr = False
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if d.getVarFlag(task, "quieterrors") is not None:
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quieterr = True
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if profile:
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profname = "profile-%s.log" % (d.getVar("PN", True) + "-" + task)
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try:
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import cProfile as profile
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except:
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import profile
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prof = profile.Profile()
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ret = profile.Profile.runcall(prof, _exec_task, fn, task, d, quieterr)
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prof.dump_stats(profname)
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bb.utils.process_profilelog(profname)
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return ret
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else:
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return _exec_task(fn, task, d, quieterr)
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except Exception:
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from traceback import format_exc
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if not quieterr:
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logger.error("Build of %s failed" % (task))
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logger.error(format_exc())
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failedevent = TaskFailed(task, None, d, True)
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event.fire(failedevent, d)
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return 1
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def stamp_internal(taskname, d, file_name, baseonly=False):
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"""
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Internal stamp helper function
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Makes sure the stamp directory exists
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Returns the stamp path+filename
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In the bitbake core, d can be a CacheData and file_name will be set.
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When called in task context, d will be a data store, file_name will not be set
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"""
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taskflagname = taskname
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if taskname.endswith("_setscene") and taskname != "do_setscene":
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taskflagname = taskname.replace("_setscene", "")
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if file_name:
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stamp = d.stamp_base[file_name].get(taskflagname) or d.stamp[file_name]
|
|
extrainfo = d.stamp_extrainfo[file_name].get(taskflagname) or ""
|
|
else:
|
|
stamp = d.getVarFlag(taskflagname, 'stamp-base', True) or d.getVar('STAMP', True)
|
|
file_name = d.getVar('BB_FILENAME', True)
|
|
extrainfo = d.getVarFlag(taskflagname, 'stamp-extra-info', True) or ""
|
|
|
|
if baseonly:
|
|
return stamp
|
|
|
|
if not stamp:
|
|
return
|
|
|
|
stamp = bb.parse.siggen.stampfile(stamp, file_name, taskname, extrainfo)
|
|
|
|
stampdir = os.path.dirname(stamp)
|
|
if bb.parse.cached_mtime_noerror(stampdir) == 0:
|
|
bb.utils.mkdirhier(stampdir)
|
|
|
|
return stamp
|
|
|
|
def stamp_cleanmask_internal(taskname, d, file_name):
|
|
"""
|
|
Internal stamp helper function to generate stamp cleaning mask
|
|
Returns the stamp path+filename
|
|
|
|
In the bitbake core, d can be a CacheData and file_name will be set.
|
|
When called in task context, d will be a data store, file_name will not be set
|
|
"""
|
|
taskflagname = taskname
|
|
if taskname.endswith("_setscene") and taskname != "do_setscene":
|
|
taskflagname = taskname.replace("_setscene", "")
|
|
|
|
if file_name:
|
|
stamp = d.stamp_base_clean[file_name].get(taskflagname) or d.stampclean[file_name]
|
|
extrainfo = d.stamp_extrainfo[file_name].get(taskflagname) or ""
|
|
else:
|
|
stamp = d.getVarFlag(taskflagname, 'stamp-base-clean', True) or d.getVar('STAMPCLEAN', True)
|
|
file_name = d.getVar('BB_FILENAME', True)
|
|
extrainfo = d.getVarFlag(taskflagname, 'stamp-extra-info', True) or ""
|
|
|
|
if not stamp:
|
|
return []
|
|
|
|
cleanmask = bb.parse.siggen.stampcleanmask(stamp, file_name, taskname, extrainfo)
|
|
|
|
return [cleanmask, cleanmask.replace(taskflagname, taskflagname + "_setscene")]
|
|
|
|
def make_stamp(task, d, file_name = None):
|
|
"""
|
|
Creates/updates a stamp for a given task
|
|
(d can be a data dict or dataCache)
|
|
"""
|
|
cleanmask = stamp_cleanmask_internal(task, d, file_name)
|
|
for mask in cleanmask:
|
|
for name in glob.glob(mask):
|
|
# Preserve sigdata files in the stamps directory
|
|
if "sigdata" in name:
|
|
continue
|
|
# Preserve taint files in the stamps directory
|
|
if name.endswith('.taint'):
|
|
continue
|
|
os.unlink(name)
|
|
|
|
stamp = stamp_internal(task, d, file_name)
|
|
# Remove the file and recreate to force timestamp
|
|
# change on broken NFS filesystems
|
|
if stamp:
|
|
bb.utils.remove(stamp)
|
|
open(stamp, "w").close()
|
|
|
|
# If we're in task context, write out a signature file for each task
|
|
# as it completes
|
|
if not task.endswith("_setscene") and task != "do_setscene" and not file_name:
|
|
stampbase = stamp_internal(task, d, None, True)
|
|
file_name = d.getVar('BB_FILENAME', True)
|
|
bb.parse.siggen.dump_sigtask(file_name, task, stampbase, True)
|
|
|
|
def del_stamp(task, d, file_name = None):
|
|
"""
|
|
Removes a stamp for a given task
|
|
(d can be a data dict or dataCache)
|
|
"""
|
|
stamp = stamp_internal(task, d, file_name)
|
|
bb.utils.remove(stamp)
|
|
|
|
def write_taint(task, d, file_name = None):
|
|
"""
|
|
Creates a "taint" file which will force the specified task and its
|
|
dependents to be re-run the next time by influencing the value of its
|
|
taskhash.
|
|
(d can be a data dict or dataCache)
|
|
"""
|
|
import uuid
|
|
if file_name:
|
|
taintfn = d.stamp[file_name] + '.' + task + '.taint'
|
|
else:
|
|
taintfn = d.getVar('STAMP', True) + '.' + task + '.taint'
|
|
bb.utils.mkdirhier(os.path.dirname(taintfn))
|
|
# The specific content of the taint file is not really important,
|
|
# we just need it to be random, so a random UUID is used
|
|
with open(taintfn, 'w') as taintf:
|
|
taintf.write(str(uuid.uuid4()))
|
|
|
|
def stampfile(taskname, d, file_name = None):
|
|
"""
|
|
Return the stamp for a given task
|
|
(d can be a data dict or dataCache)
|
|
"""
|
|
return stamp_internal(taskname, d, file_name)
|
|
|
|
def add_tasks(tasklist, deltasklist, d):
|
|
task_deps = d.getVar('_task_deps')
|
|
if not task_deps:
|
|
task_deps = {}
|
|
if not 'tasks' in task_deps:
|
|
task_deps['tasks'] = []
|
|
if not 'parents' in task_deps:
|
|
task_deps['parents'] = {}
|
|
|
|
for task in tasklist:
|
|
task = d.expand(task)
|
|
|
|
if task in deltasklist:
|
|
continue
|
|
|
|
d.setVarFlag(task, 'task', 1)
|
|
|
|
if not task in task_deps['tasks']:
|
|
task_deps['tasks'].append(task)
|
|
|
|
flags = d.getVarFlags(task)
|
|
def getTask(name):
|
|
if not name in task_deps:
|
|
task_deps[name] = {}
|
|
if name in flags:
|
|
deptask = d.expand(flags[name])
|
|
task_deps[name][task] = deptask
|
|
getTask('depends')
|
|
getTask('rdepends')
|
|
getTask('deptask')
|
|
getTask('rdeptask')
|
|
getTask('recrdeptask')
|
|
getTask('recideptask')
|
|
getTask('nostamp')
|
|
getTask('fakeroot')
|
|
getTask('noexec')
|
|
getTask('umask')
|
|
task_deps['parents'][task] = []
|
|
if 'deps' in flags:
|
|
for dep in flags['deps']:
|
|
dep = d.expand(dep)
|
|
task_deps['parents'][task].append(dep)
|
|
|
|
# don't assume holding a reference
|
|
d.setVar('_task_deps', task_deps)
|
|
|
|
def addtask(task, before, after, d):
|
|
if task[:3] != "do_":
|
|
task = "do_" + task
|
|
|
|
d.setVarFlag(task, "task", 1)
|
|
bbtasks = d.getVar('__BBTASKS') or []
|
|
if not task in bbtasks:
|
|
bbtasks.append(task)
|
|
d.setVar('__BBTASKS', bbtasks)
|
|
|
|
existing = d.getVarFlag(task, "deps") or []
|
|
if after is not None:
|
|
# set up deps for function
|
|
for entry in after.split():
|
|
if entry not in existing:
|
|
existing.append(entry)
|
|
d.setVarFlag(task, "deps", existing)
|
|
if before is not None:
|
|
# set up things that depend on this func
|
|
for entry in before.split():
|
|
existing = d.getVarFlag(entry, "deps") or []
|
|
if task not in existing:
|
|
d.setVarFlag(entry, "deps", [task] + existing)
|
|
|
|
def deltask(task, d):
|
|
if task[:3] != "do_":
|
|
task = "do_" + task
|
|
|
|
bbtasks = d.getVar('__BBDELTASKS') or []
|
|
if not task in bbtasks:
|
|
bbtasks.append(task)
|
|
d.setVar('__BBDELTASKS', bbtasks)
|
|
|