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# server.py - inotify status server
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#
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# Copyright 2006, 2007, 2008 Bryan O'Sullivan <bos@serpentine.com>
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# Copyright 2007, 2008 Brendan Cully <brendan@kublai.com>
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2, incorporated herein by reference.
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from mercurial.i18n import _
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from mercurial import osutil, util
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import common
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import errno, os, select, socket, stat, struct, sys, tempfile, time
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try:
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import linux as inotify
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from linux import watcher
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except ImportError:
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raise
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class AlreadyStartedException(Exception): pass
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def join(a, b):
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if a:
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if a[-1] == '/':
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return a + b
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return a + '/' + b
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return b
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walk_ignored_errors = (errno.ENOENT, errno.ENAMETOOLONG)
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def walkrepodirs(repo):
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'''Iterate over all subdirectories of this repo.
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Exclude the .hg directory, any nested repos, and ignored dirs.'''
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rootslash = repo.root + os.sep
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def walkit(dirname, top):
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fullpath = rootslash + dirname
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try:
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for name, kind in osutil.listdir(fullpath):
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if kind == stat.S_IFDIR:
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if name == '.hg':
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if not top:
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return
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else:
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d = join(dirname, name)
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if repo.dirstate._ignore(d):
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continue
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for subdir in walkit(d, False):
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yield subdir
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except OSError, err:
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if err.errno not in walk_ignored_errors:
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raise
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yield fullpath
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return walkit('', True)
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def walk(repo, root):
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'''Like os.walk, but only yields regular files.'''
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# This function is critical to performance during startup.
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rootslash = repo.root + os.sep
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def walkit(root, reporoot):
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files, dirs = [], []
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try:
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fullpath = rootslash + root
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for name, kind in osutil.listdir(fullpath):
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if kind == stat.S_IFDIR:
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if name == '.hg':
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if not reporoot:
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return
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else:
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dirs.append(name)
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path = join(root, name)
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if repo.dirstate._ignore(path):
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continue
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for result in walkit(path, False):
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yield result
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elif kind in (stat.S_IFREG, stat.S_IFLNK):
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files.append(name)
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yield fullpath, dirs, files
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except OSError, err:
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if err.errno not in walk_ignored_errors:
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raise
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return walkit(root, root == '')
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def _explain_watch_limit(ui, repo, count):
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path = '/proc/sys/fs/inotify/max_user_watches'
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try:
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limit = int(file(path).read())
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except IOError, err:
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if err.errno != errno.ENOENT:
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raise
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raise util.Abort(_('this system does not seem to '
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'support inotify'))
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ui.warn(_('*** the current per-user limit on the number '
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'of inotify watches is %s\n') % limit)
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ui.warn(_('*** this limit is too low to watch every '
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'directory in this repository\n'))
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ui.warn(_('*** counting directories: '))
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ndirs = len(list(walkrepodirs(repo)))
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ui.warn(_('found %d\n') % ndirs)
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newlimit = min(limit, 1024)
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while newlimit < ((limit + ndirs) * 1.1):
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newlimit *= 2
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ui.warn(_('*** to raise the limit from %d to %d (run as root):\n') %
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(limit, newlimit))
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ui.warn(_('*** echo %d > %s\n') % (newlimit, path))
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raise util.Abort(_('cannot watch %s until inotify watch limit is raised')
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% repo.root)
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class repowatcher(object):
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poll_events = select.POLLIN
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statuskeys = 'almr!?'
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mask = (
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inotify.IN_ATTRIB |
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inotify.IN_CREATE |
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inotify.IN_DELETE |
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inotify.IN_DELETE_SELF |
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inotify.IN_MODIFY |
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inotify.IN_MOVED_FROM |
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inotify.IN_MOVED_TO |
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inotify.IN_MOVE_SELF |
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inotify.IN_ONLYDIR |
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inotify.IN_UNMOUNT |
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0)
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def __init__(self, ui, repo, master):
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self.ui = ui
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self.repo = repo
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self.wprefix = self.repo.wjoin('')
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self.timeout = None
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self.master = master
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try:
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self.watcher = watcher.watcher()
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except OSError, err:
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raise util.Abort(_('inotify service not available: %s') %
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err.strerror)
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self.threshold = watcher.threshold(self.watcher)
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self.registered = True
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self.fileno = self.watcher.fileno
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self.tree = {}
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self.statcache = {}
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self.statustrees = dict([(s, {}) for s in self.statuskeys])
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self.watches = 0
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self.last_event = None
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self.eventq = {}
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self.deferred = 0
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self.ds_info = self.dirstate_info()
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self.handle_timeout()
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self.scan()
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def event_time(self):
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last = self.last_event
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now = time.time()
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self.last_event = now
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if last is None:
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return 'start'
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delta = now - last
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if delta < 5:
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return '+%.3f' % delta
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if delta < 50:
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return '+%.2f' % delta
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return '+%.1f' % delta
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def dirstate_info(self):
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try:
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st = os.lstat(self.repo.join('dirstate'))
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return st.st_mtime, st.st_ino
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except OSError, err:
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if err.errno != errno.ENOENT:
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raise
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return 0, 0
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def add_watch(self, path, mask):
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if not path:
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return
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if self.watcher.path(path) is None:
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if self.ui.debugflag:
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self.ui.note(_('watching %r\n') % path[len(self.wprefix):])
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try:
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self.watcher.add(path, mask)
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self.watches += 1
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except OSError, err:
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if err.errno in (errno.ENOENT, errno.ENOTDIR):
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return
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if err.errno != errno.ENOSPC:
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raise
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_explain_watch_limit(self.ui, self.repo, self.watches)
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def setup(self):
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self.ui.note(_('watching directories under %r\n') % self.repo.root)
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self.add_watch(self.repo.path, inotify.IN_DELETE)
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self.check_dirstate()
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def wpath(self, evt):
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path = evt.fullpath
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if path == self.repo.root:
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return ''
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if path.startswith(self.wprefix):
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return path[len(self.wprefix):]
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raise 'wtf? ' + path
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def dir(self, tree, path):
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if path:
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for name in path.split('/'):
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tree = tree.setdefault(name, {})
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return tree
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def lookup(self, path, tree):
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if path:
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try:
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for name in path.split('/'):
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tree = tree[name]
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except KeyError:
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return 'x'
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except TypeError:
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return 'd'
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return tree
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def split(self, path):
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c = path.rfind('/')
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if c == -1:
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return '', path
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return path[:c], path[c+1:]
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def filestatus(self, fn, st):
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try:
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type_, mode, size, time = self.repo.dirstate._map[fn][:4]
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except KeyError:
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type_ = '?'
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if type_ == 'n':
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st_mode, st_size, st_mtime = st
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if size == -1:
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return 'l'
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if size and (size != st_size or (mode ^ st_mode) & 0100):
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return 'm'
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if time != int(st_mtime):
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return 'l'
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return 'n'
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if type_ == '?' and self.repo.dirstate._ignore(fn):
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return 'i'
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return type_
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def updatefile(self, wfn, osstat):
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'''
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update the file entry of an existing file.
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osstat: (mode, size, time) tuple, as returned by os.lstat(wfn)
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'''
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self._updatestatus(wfn, self.filestatus(wfn, osstat))
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def deletefile(self, wfn, oldstatus):
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'''
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update the entry of a file which has been deleted.
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oldstatus: char in statuskeys, status of the file before deletion
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'''
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if oldstatus == 'r':
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newstatus = 'r'
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elif oldstatus in 'almn':
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newstatus = '!'
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else:
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newstatus = None
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self.statcache.pop(wfn, None)
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self._updatestatus(wfn, newstatus)
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def _updatestatus(self, wfn, newstatus):
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'''
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Update the stored status of a file or directory.
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newstatus: - char in (statuskeys + 'ni'), new status to apply.
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- or None, to stop tracking wfn
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'''
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root, fn = self.split(wfn)
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d = self.dir(self.tree, root)
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oldstatus = d.get(fn)
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# oldstatus can be either:
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# - None : fn is new
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# - a char in statuskeys: fn is a (tracked) file
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# - a dict: fn is a directory
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isdir = isinstance(oldstatus, dict)
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if self.ui.debugflag and oldstatus != newstatus:
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if isdir:
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self.ui.note(_('status: %r dir(%d) -> %s\n') %
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(wfn, len(oldstatus), newstatus))
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else:
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self.ui.note(_('status: %r %s -> %s\n') %
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(wfn, oldstatus, newstatus))
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if not isdir:
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if oldstatus and oldstatus in self.statuskeys \
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and oldstatus != newstatus:
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del self.dir(self.statustrees[oldstatus], root)[fn]
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if newstatus and newstatus != 'i':
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d[fn] = newstatus
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if newstatus in self.statuskeys:
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dd = self.dir(self.statustrees[newstatus], root)
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if oldstatus != newstatus or fn not in dd:
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dd[fn] = newstatus
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else:
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d.pop(fn, None)
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def check_deleted(self, key):
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# Files that had been deleted but were present in the dirstate
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# may have vanished from the dirstate; we must clean them up.
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nuke = []
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for wfn, ignore in self.walk(key, self.statustrees[key]):
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if wfn not in self.repo.dirstate:
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nuke.append(wfn)
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for wfn in nuke:
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root, fn = self.split(wfn)
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del self.dir(self.statustrees[key], root)[fn]
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del self.dir(self.tree, root)[fn]
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def scan(self, topdir=''):
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ds = self.repo.dirstate._map.copy()
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self.add_watch(join(self.repo.root, topdir), self.mask)
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for root, dirs, files in walk(self.repo, topdir):
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for d in dirs:
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self.add_watch(join(root, d), self.mask)
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wroot = root[len(self.wprefix):]
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d = self.dir(self.tree, wroot)
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for fn in files:
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wfn = join(wroot, fn)
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self.updatefile(wfn, self.getstat(wfn))
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ds.pop(wfn, None)
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wtopdir = topdir
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if wtopdir and wtopdir[-1] != '/':
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wtopdir += '/'
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for wfn, state in ds.iteritems():
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if not wfn.startswith(wtopdir):
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continue
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try:
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st = self.stat(wfn)
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except OSError:
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status = state[0]
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self.deletefile(wfn, status)
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else:
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self.updatefile(wfn, st)
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self.check_deleted('!')
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self.check_deleted('r')
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def check_dirstate(self):
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ds_info = self.dirstate_info()
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if ds_info == self.ds_info:
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return
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self.ds_info = ds_info
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if not self.ui.debugflag:
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self.last_event = None
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self.ui.note(_('%s dirstate reload\n') % self.event_time())
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self.repo.dirstate.invalidate()
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self.handle_timeout()
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self.scan()
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self.ui.note(_('%s end dirstate reload\n') % self.event_time())
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def walk(self, states, tree, prefix=''):
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# This is the "inner loop" when talking to the client.
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for name, val in tree.iteritems():
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path = join(prefix, name)
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try:
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if val in states:
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yield path, val
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except TypeError:
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for p in self.walk(states, val, path):
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yield p
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def update_hgignore(self):
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# An update of the ignore file can potentially change the
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# states of all unknown and ignored files.
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# XXX If the user has other ignore files outside the repo, or
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# changes their list of ignore files at run time, we'll
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# potentially never see changes to them. We could get the
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# client to report to us what ignore data they're using.
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# But it's easier to do nothing than to open that can of
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# worms.
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if '_ignore' in self.repo.dirstate.__dict__:
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delattr(self.repo.dirstate, '_ignore')
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self.ui.note(_('rescanning due to .hgignore change\n'))
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self.handle_timeout()
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self.scan()
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def getstat(self, wpath):
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try:
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return self.statcache[wpath]
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except KeyError:
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try:
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return self.stat(wpath)
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except OSError, err:
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if err.errno != errno.ENOENT:
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raise
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def stat(self, wpath):
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try:
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st = os.lstat(join(self.wprefix, wpath))
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ret = st.st_mode, st.st_size, st.st_mtime
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self.statcache[wpath] = ret
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return ret
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except OSError:
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self.statcache.pop(wpath, None)
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raise
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def created(self, wpath):
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if wpath == '.hgignore':
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self.update_hgignore()
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try:
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st = self.stat(wpath)
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if stat.S_ISREG(st[0]):
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self.updatefile(wpath, st)
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except OSError:
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pass
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def modified(self, wpath):
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if wpath == '.hgignore':
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self.update_hgignore()
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try:
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st = self.stat(wpath)
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if stat.S_ISREG(st[0]):
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if self.repo.dirstate[wpath] in 'lmn':
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self.updatefile(wpath, st)
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except OSError:
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pass
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def deleted(self, wpath):
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if wpath == '.hgignore':
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self.update_hgignore()
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elif wpath.startswith('.hg/'):
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if wpath == '.hg/wlock':
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self.check_dirstate()
|
|
|
return
|
|
|
|
|
|
self.deletefile(wpath, self.repo.dirstate[wpath])
|
|
|
|
|
|
def schedule_work(self, wpath, evt):
|
|
|
prev = self.eventq.setdefault(wpath, [])
|
|
|
try:
|
|
|
if prev and evt == 'm' and prev[-1] in 'cm':
|
|
|
return
|
|
|
self.eventq[wpath].append(evt)
|
|
|
finally:
|
|
|
self.deferred += 1
|
|
|
self.timeout = 250
|
|
|
|
|
|
def deferred_event(self, wpath, evt):
|
|
|
if evt == 'c':
|
|
|
self.created(wpath)
|
|
|
elif evt == 'm':
|
|
|
self.modified(wpath)
|
|
|
elif evt == 'd':
|
|
|
self.deleted(wpath)
|
|
|
|
|
|
def process_create(self, wpath, evt):
|
|
|
if self.ui.debugflag:
|
|
|
self.ui.note(_('%s event: created %s\n') %
|
|
|
(self.event_time(), wpath))
|
|
|
|
|
|
if evt.mask & inotify.IN_ISDIR:
|
|
|
self.scan(wpath)
|
|
|
else:
|
|
|
self.schedule_work(wpath, 'c')
|
|
|
|
|
|
def process_delete(self, wpath, evt):
|
|
|
if self.ui.debugflag:
|
|
|
self.ui.note(_('%s event: deleted %s\n') %
|
|
|
(self.event_time(), wpath))
|
|
|
|
|
|
if evt.mask & inotify.IN_ISDIR:
|
|
|
tree = self.dir(self.tree, wpath).copy()
|
|
|
for wfn, ignore in self.walk('?', tree):
|
|
|
self.deletefile(join(wpath, wfn), '?')
|
|
|
self.scan(wpath)
|
|
|
else:
|
|
|
self.schedule_work(wpath, 'd')
|
|
|
|
|
|
def process_modify(self, wpath, evt):
|
|
|
if self.ui.debugflag:
|
|
|
self.ui.note(_('%s event: modified %s\n') %
|
|
|
(self.event_time(), wpath))
|
|
|
|
|
|
if not (evt.mask & inotify.IN_ISDIR):
|
|
|
self.schedule_work(wpath, 'm')
|
|
|
|
|
|
def process_unmount(self, evt):
|
|
|
self.ui.warn(_('filesystem containing %s was unmounted\n') %
|
|
|
evt.fullpath)
|
|
|
sys.exit(0)
|
|
|
|
|
|
def handle_event(self, fd, event):
|
|
|
if self.ui.debugflag:
|
|
|
self.ui.note(_('%s readable: %d bytes\n') %
|
|
|
(self.event_time(), self.threshold.readable()))
|
|
|
if not self.threshold():
|
|
|
if self.registered:
|
|
|
if self.ui.debugflag:
|
|
|
self.ui.note(_('%s below threshold - unhooking\n') %
|
|
|
(self.event_time()))
|
|
|
self.master.poll.unregister(fd)
|
|
|
self.registered = False
|
|
|
self.timeout = 250
|
|
|
else:
|
|
|
self.read_events()
|
|
|
|
|
|
def read_events(self, bufsize=None):
|
|
|
events = self.watcher.read(bufsize)
|
|
|
if self.ui.debugflag:
|
|
|
self.ui.note(_('%s reading %d events\n') %
|
|
|
(self.event_time(), len(events)))
|
|
|
for evt in events:
|
|
|
wpath = self.wpath(evt)
|
|
|
if evt.mask & inotify.IN_UNMOUNT:
|
|
|
self.process_unmount(wpath, evt)
|
|
|
elif evt.mask & (inotify.IN_MODIFY | inotify.IN_ATTRIB):
|
|
|
self.process_modify(wpath, evt)
|
|
|
elif evt.mask & (inotify.IN_DELETE | inotify.IN_DELETE_SELF |
|
|
|
inotify.IN_MOVED_FROM):
|
|
|
self.process_delete(wpath, evt)
|
|
|
elif evt.mask & (inotify.IN_CREATE | inotify.IN_MOVED_TO):
|
|
|
self.process_create(wpath, evt)
|
|
|
|
|
|
def handle_timeout(self):
|
|
|
if not self.registered:
|
|
|
if self.ui.debugflag:
|
|
|
self.ui.note(_('%s hooking back up with %d bytes readable\n') %
|
|
|
(self.event_time(), self.threshold.readable()))
|
|
|
self.read_events(0)
|
|
|
self.master.poll.register(self, select.POLLIN)
|
|
|
self.registered = True
|
|
|
|
|
|
if self.eventq:
|
|
|
if self.ui.debugflag:
|
|
|
self.ui.note(_('%s processing %d deferred events as %d\n') %
|
|
|
(self.event_time(), self.deferred,
|
|
|
len(self.eventq)))
|
|
|
for wpath, evts in sorted(self.eventq.iteritems()):
|
|
|
for evt in evts:
|
|
|
self.deferred_event(wpath, evt)
|
|
|
self.eventq.clear()
|
|
|
self.deferred = 0
|
|
|
self.timeout = None
|
|
|
|
|
|
def shutdown(self):
|
|
|
self.watcher.close()
|
|
|
|
|
|
def debug(self):
|
|
|
"""
|
|
|
Returns a sorted list of relatives paths currently watched,
|
|
|
for debugging purposes.
|
|
|
"""
|
|
|
return sorted(tuple[0][len(self.wprefix):] for tuple in self.watcher)
|
|
|
|
|
|
class server(object):
|
|
|
poll_events = select.POLLIN
|
|
|
|
|
|
def __init__(self, ui, repo, repowatcher, timeout):
|
|
|
self.ui = ui
|
|
|
self.repo = repo
|
|
|
self.repowatcher = repowatcher
|
|
|
self.timeout = timeout
|
|
|
self.sock = socket.socket(socket.AF_UNIX)
|
|
|
self.sockpath = self.repo.join('inotify.sock')
|
|
|
self.realsockpath = None
|
|
|
try:
|
|
|
self.sock.bind(self.sockpath)
|
|
|
except socket.error, err:
|
|
|
if err[0] == errno.EADDRINUSE:
|
|
|
raise AlreadyStartedException(_('could not start server: %s')
|
|
|
% err[1])
|
|
|
if err[0] == "AF_UNIX path too long":
|
|
|
tempdir = tempfile.mkdtemp(prefix="hg-inotify-")
|
|
|
self.realsockpath = os.path.join(tempdir, "inotify.sock")
|
|
|
try:
|
|
|
self.sock.bind(self.realsockpath)
|
|
|
os.symlink(self.realsockpath, self.sockpath)
|
|
|
except (OSError, socket.error), inst:
|
|
|
try:
|
|
|
os.unlink(self.realsockpath)
|
|
|
except:
|
|
|
pass
|
|
|
os.rmdir(tempdir)
|
|
|
if inst.errno == errno.EEXIST:
|
|
|
raise AlreadyStartedException(_('could not start server: %s')
|
|
|
% inst.strerror)
|
|
|
raise
|
|
|
else:
|
|
|
raise
|
|
|
self.sock.listen(5)
|
|
|
self.fileno = self.sock.fileno
|
|
|
|
|
|
def handle_timeout(self):
|
|
|
pass
|
|
|
|
|
|
def answer_stat_query(self, cs):
|
|
|
names = cs.read().split('\0')
|
|
|
|
|
|
states = names.pop()
|
|
|
|
|
|
self.ui.note(_('answering query for %r\n') % states)
|
|
|
|
|
|
if self.repowatcher.timeout:
|
|
|
# We got a query while a rescan is pending. Make sure we
|
|
|
# rescan before responding, or we could give back a wrong
|
|
|
# answer.
|
|
|
self.repowatcher.handle_timeout()
|
|
|
|
|
|
if not names:
|
|
|
def genresult(states, tree):
|
|
|
for fn, state in self.repowatcher.walk(states, tree):
|
|
|
yield fn
|
|
|
else:
|
|
|
def genresult(states, tree):
|
|
|
for fn in names:
|
|
|
l = self.repowatcher.lookup(fn, tree)
|
|
|
try:
|
|
|
if l in states:
|
|
|
yield fn
|
|
|
except TypeError:
|
|
|
for f, s in self.repowatcher.walk(states, l, fn):
|
|
|
yield f
|
|
|
|
|
|
return ['\0'.join(r) for r in [
|
|
|
genresult('l', self.repowatcher.statustrees['l']),
|
|
|
genresult('m', self.repowatcher.statustrees['m']),
|
|
|
genresult('a', self.repowatcher.statustrees['a']),
|
|
|
genresult('r', self.repowatcher.statustrees['r']),
|
|
|
genresult('!', self.repowatcher.statustrees['!']),
|
|
|
'?' in states
|
|
|
and genresult('?', self.repowatcher.statustrees['?'])
|
|
|
or [],
|
|
|
[],
|
|
|
'c' in states and genresult('n', self.repowatcher.tree) or [],
|
|
|
]]
|
|
|
|
|
|
def answer_dbug_query(self):
|
|
|
return ['\0'.join(self.repowatcher.debug())]
|
|
|
|
|
|
def handle_event(self, fd, event):
|
|
|
sock, addr = self.sock.accept()
|
|
|
|
|
|
cs = common.recvcs(sock)
|
|
|
version = ord(cs.read(1))
|
|
|
|
|
|
if version != common.version:
|
|
|
self.ui.warn(_('received query from incompatible client '
|
|
|
'version %d\n') % version)
|
|
|
return
|
|
|
|
|
|
type = cs.read(4)
|
|
|
|
|
|
if type == 'STAT':
|
|
|
results = self.answer_stat_query(cs)
|
|
|
elif type == 'DBUG':
|
|
|
results = self.answer_dbug_query()
|
|
|
else:
|
|
|
self.ui.warn(_('unrecognized query type: %s\n') % type)
|
|
|
return
|
|
|
|
|
|
try:
|
|
|
try:
|
|
|
v = chr(common.version)
|
|
|
|
|
|
sock.sendall(v + type + struct.pack(common.resphdrfmts[type],
|
|
|
*map(len, results)))
|
|
|
sock.sendall(''.join(results))
|
|
|
finally:
|
|
|
sock.shutdown(socket.SHUT_WR)
|
|
|
except socket.error, err:
|
|
|
if err[0] != errno.EPIPE:
|
|
|
raise
|
|
|
|
|
|
def shutdown(self):
|
|
|
self.sock.close()
|
|
|
try:
|
|
|
os.unlink(self.sockpath)
|
|
|
if self.realsockpath:
|
|
|
os.unlink(self.realsockpath)
|
|
|
os.rmdir(os.path.dirname(self.realsockpath))
|
|
|
except OSError, err:
|
|
|
if err.errno != errno.ENOENT:
|
|
|
raise
|
|
|
|
|
|
class master(object):
|
|
|
def __init__(self, ui, repo, timeout=None):
|
|
|
self.ui = ui
|
|
|
self.repo = repo
|
|
|
self.poll = select.poll()
|
|
|
self.repowatcher = repowatcher(ui, repo, self)
|
|
|
self.server = server(ui, repo, self.repowatcher, timeout)
|
|
|
self.table = {}
|
|
|
for obj in (self.repowatcher, self.server):
|
|
|
fd = obj.fileno()
|
|
|
self.table[fd] = obj
|
|
|
self.poll.register(fd, obj.poll_events)
|
|
|
|
|
|
def register(self, fd, mask):
|
|
|
self.poll.register(fd, mask)
|
|
|
|
|
|
def shutdown(self):
|
|
|
for obj in self.table.itervalues():
|
|
|
obj.shutdown()
|
|
|
|
|
|
def run(self):
|
|
|
self.repowatcher.setup()
|
|
|
self.ui.note(_('finished setup\n'))
|
|
|
if os.getenv('TIME_STARTUP'):
|
|
|
sys.exit(0)
|
|
|
while True:
|
|
|
timeout = None
|
|
|
timeobj = None
|
|
|
for obj in self.table.itervalues():
|
|
|
if obj.timeout is not None and (timeout is None or obj.timeout < timeout):
|
|
|
timeout, timeobj = obj.timeout, obj
|
|
|
try:
|
|
|
if self.ui.debugflag:
|
|
|
if timeout is None:
|
|
|
self.ui.note(_('polling: no timeout\n'))
|
|
|
else:
|
|
|
self.ui.note(_('polling: %sms timeout\n') % timeout)
|
|
|
events = self.poll.poll(timeout)
|
|
|
except select.error, err:
|
|
|
if err[0] == errno.EINTR:
|
|
|
continue
|
|
|
raise
|
|
|
if events:
|
|
|
for fd, event in events:
|
|
|
self.table[fd].handle_event(fd, event)
|
|
|
elif timeobj:
|
|
|
timeobj.handle_timeout()
|
|
|
|
|
|
def start(ui, repo):
|
|
|
def closefds(ignore):
|
|
|
# (from python bug #1177468)
|
|
|
# close all inherited file descriptors
|
|
|
# Python 2.4.1 and later use /dev/urandom to seed the random module's RNG
|
|
|
# a file descriptor is kept internally as os._urandomfd (created on demand
|
|
|
# the first time os.urandom() is called), and should not be closed
|
|
|
try:
|
|
|
os.urandom(4)
|
|
|
urandom_fd = getattr(os, '_urandomfd', None)
|
|
|
except AttributeError:
|
|
|
urandom_fd = None
|
|
|
ignore.append(urandom_fd)
|
|
|
for fd in range(3, 256):
|
|
|
if fd in ignore:
|
|
|
continue
|
|
|
try:
|
|
|
os.close(fd)
|
|
|
except OSError:
|
|
|
pass
|
|
|
|
|
|
m = master(ui, repo)
|
|
|
sys.stdout.flush()
|
|
|
sys.stderr.flush()
|
|
|
|
|
|
pid = os.fork()
|
|
|
if pid:
|
|
|
return pid
|
|
|
|
|
|
closefds([m.server.fileno(), m.repowatcher.fileno()])
|
|
|
os.setsid()
|
|
|
|
|
|
fd = os.open('/dev/null', os.O_RDONLY)
|
|
|
os.dup2(fd, 0)
|
|
|
if fd > 0:
|
|
|
os.close(fd)
|
|
|
|
|
|
fd = os.open(ui.config('inotify', 'log', '/dev/null'),
|
|
|
os.O_RDWR | os.O_CREAT | os.O_TRUNC)
|
|
|
os.dup2(fd, 1)
|
|
|
os.dup2(fd, 2)
|
|
|
if fd > 2:
|
|
|
os.close(fd)
|
|
|
|
|
|
try:
|
|
|
m.run()
|
|
|
finally:
|
|
|
m.shutdown()
|
|
|
os._exit(0)
|
|
|
|