def cacheddir(my_original_path,
ignorecvs,
ignorelist,
EmptyOnError,
followSymlinks=True):
mypath = normalize_path(my_original_path)
try:
pathstat = os.stat(mypath)
if not stat.S_ISDIR(pathstat.st_mode):
raise DirectoryNotFound(mypath)
except EnvironmentError as e:
if e.errno == PermissionDenied.errno:
raise PermissionDenied(mypath)
del e
return [], []
except PortageException:
return [], []
else:
try:
fpaths = os.listdir(mypath)
except EnvironmentError as e:
if e.errno != errno.EACCES:
raise
del e
raise PermissionDenied(mypath)
ftype = []
for x in fpaths:
try:
if followSymlinks:
pathstat = os.stat(mypath + "/" + x)
else:
pathstat = os.lstat(mypath + "/" + x)
if stat.S_ISREG(pathstat[stat.ST_MODE]):
ftype.append(0)
elif stat.S_ISDIR(pathstat[stat.ST_MODE]):
ftype.append(1)
elif stat.S_ISLNK(pathstat[stat.ST_MODE]):
ftype.append(2)
else:
ftype.append(3)
except (IOError, OSError):
ftype.append(3)
if ignorelist or ignorecvs:
ret_list = []
ret_ftype = []
for file_path, file_type in zip(fpaths, ftype):
if file_path in ignorelist:
pass
elif ignorecvs:
if file_path[:2] != ".#" and not (file_type == 1
and file_path in VCS_DIRS):
ret_list.append(file_path)
ret_ftype.append(file_type)
else:
ret_list = fpaths
ret_ftype = ftype
return ret_list, ret_ftype
def _check_var_directory(self, varname, var):
if not isdir_raise_eaccess(var):
writemsg(
_("!!! Error: %s='%s' is not a directory. "
"Please correct this.\n") % (varname, var),
noiselevel=-1,
)
raise DirectoryNotFound(var)
def grab_updates(updpath, prev_mtimes=None):
"""Returns all the updates from the given directory as a sorted list of
tuples, each containing (file_path, statobj, content). If prev_mtimes is
given then updates are only returned if one or more files have different
mtimes. When a change is detected for a given file, updates will be
returned for that file and any files that come after it in the entire
sequence. This ensures that all relevant updates are returned for cases
in which the destination package of an earlier move corresponds to
the source package of a move that comes somewhere later in the entire
sequence of files.
"""
try:
mylist = os.listdir(updpath)
except OSError as oe:
if oe.errno == errno.ENOENT:
raise DirectoryNotFound(updpath)
raise
if prev_mtimes is None:
prev_mtimes = {}
# validate the file name (filter out CVS directory, etc...)
mylist = [
myfile for myfile in mylist if len(myfile) == 7 and myfile[1:3] == "Q-"
]
if len(mylist) == 0:
return []
# update names are mangled to make them sort properly
mylist = [myfile[3:] + "-" + myfile[:2] for myfile in mylist]
mylist.sort()
mylist = [myfile[5:] + "-" + myfile[:4] for myfile in mylist]
update_data = []
for myfile in mylist:
file_path = os.path.join(updpath, myfile)
mystat = os.stat(file_path)
if update_data or \
file_path not in prev_mtimes or \
long(prev_mtimes[file_path]) != mystat[stat.ST_MTIME]:
f = io.open(_unicode_encode(file_path,
encoding=_encodings['fs'],
errors='strict'),
mode='r',
encoding=_encodings['repo.content'],
errors='replace')
content = f.read()
f.close()
update_data.append((file_path, mystat, content))
return update_data
def grab_updates(updpath, prev_mtimes=None):
"""Returns all the updates from the given directory as a sorted list of
tuples, each containing (file_path, statobj, content). If prev_mtimes is
given then updates are only returned if one or more files have different
mtimes. When a change is detected for a given file, updates will be
returned for that file and any files that come after it in the entire
sequence. This ensures that all relevant updates are returned for cases
in which the destination package of an earlier move corresponds to
the source package of a move that comes somewhere later in the entire
sequence of files.
"""
try:
mylist = os.listdir(updpath)
except OSError as oe:
if oe.errno == errno.ENOENT:
raise DirectoryNotFound(updpath)
raise
if prev_mtimes is None:
prev_mtimes = {}
update_data = []
for myfile in mylist:
if myfile.startswith("."):
continue
file_path = os.path.join(updpath, myfile)
mystat = os.stat(file_path)
if not stat.S_ISREG(mystat.st_mode):
continue
if int(prev_mtimes.get(file_path, -1)) != mystat[stat.ST_MTIME]:
f = io.open(
_unicode_encode(file_path,
encoding=_encodings["fs"],
errors="strict"),
mode="r",
encoding=_encodings["repo.content"],
errors="replace",
)
content = f.read()
f.close()
update_data.append((file_path, mystat, content))
return update_data
def grab_updates(updpath, prev_mtimes=None):
"""Returns all the updates from the given directory as a sorted list of
tuples, each containing (file_path, statobj, content). If prev_mtimes is
given then only updates with differing mtimes are considered."""
try:
mylist = os.listdir(updpath)
except OSError as oe:
if oe.errno == errno.ENOENT:
raise DirectoryNotFound(updpath)
raise
if prev_mtimes is None:
prev_mtimes = {}
# validate the file name (filter out CVS directory, etc...)
mylist = [
myfile for myfile in mylist if len(myfile) == 7 and myfile[1:3] == "Q-"
]
if len(mylist) == 0:
return []
# update names are mangled to make them sort properly
mylist = [myfile[3:] + "-" + myfile[:2] for myfile in mylist]
mylist.sort()
mylist = [myfile[5:] + "-" + myfile[:4] for myfile in mylist]
update_data = []
for myfile in mylist:
file_path = os.path.join(updpath, myfile)
mystat = os.stat(file_path)
if file_path not in prev_mtimes or \
long(prev_mtimes[file_path]) != mystat[stat.ST_MTIME]:
content = codecs.open(_unicode_encode(file_path,
encoding=_encodings['fs'],
errors='strict'),
mode='r',
encoding=_encodings['repo.content'],
errors='replace').read()
update_data.append((file_path, mystat, content))
return update_data
def _prepare_features_dirs(mysettings):
features_dirs = {
"ccache": {
"path_dir": "/usr/lib/ccache/bin",
"basedir_var": "CCACHE_DIR",
"default_dir": os.path.join(mysettings["PORTAGE_TMPDIR"],
"ccache"),
"always_recurse": False
},
"distcc": {
"path_dir": "/usr/lib/distcc/bin",
"basedir_var": "DISTCC_DIR",
"default_dir": os.path.join(mysettings["BUILD_PREFIX"], ".distcc"),
"subdirs": ("lock", "state"),
"always_recurse": True
}
}
dirmode = 0o2070
filemode = 0o60
modemask = 0o2
restrict = mysettings.get("PORTAGE_RESTRICT", "").split()
droppriv = secpass >= 2 and \
"userpriv" in mysettings.features and \
"userpriv" not in restrict
for myfeature, kwargs in features_dirs.items():
if myfeature in mysettings.features:
failure = False
basedir = mysettings.get(kwargs["basedir_var"])
if basedir is None or not basedir.strip():
basedir = kwargs["default_dir"]
mysettings[kwargs["basedir_var"]] = basedir
try:
path_dir = kwargs["path_dir"]
if not os.path.isdir(path_dir):
raise DirectoryNotFound(path_dir)
mydirs = [mysettings[kwargs["basedir_var"]]]
if "subdirs" in kwargs:
for subdir in kwargs["subdirs"]:
mydirs.append(os.path.join(basedir, subdir))
for mydir in mydirs:
modified = ensure_dirs(mydir)
# Generally, we only want to apply permissions for
# initial creation. Otherwise, we don't know exactly what
# permissions the user wants, so should leave them as-is.
droppriv_fix = False
if droppriv:
st = os.stat(mydir)
if st.st_gid != portage_gid or \
not dirmode == (stat.S_IMODE(st.st_mode) & dirmode):
droppriv_fix = True
if not droppriv_fix:
# Check permissions of files in the directory.
for filename in os.listdir(mydir):
try:
subdir_st = os.lstat(
os.path.join(mydir, filename))
except OSError:
continue
if subdir_st.st_gid != portage_gid or \
((stat.S_ISDIR(subdir_st.st_mode) and \
not dirmode == (stat.S_IMODE(subdir_st.st_mode) & dirmode))):
droppriv_fix = True
break
if droppriv_fix:
_adjust_perms_msg(mysettings,
colorize("WARN", " * ") + \
_("Adjusting permissions "
"for FEATURES=userpriv: '%s'\n") % mydir)
elif modified:
_adjust_perms_msg(mysettings,
colorize("WARN", " * ") + \
_("Adjusting permissions "
"for FEATURES=%s: '%s'\n") % (myfeature, mydir))
if modified or kwargs["always_recurse"] or droppriv_fix:
def onerror(e):
raise # The feature is disabled if a single error
# occurs during permissions adjustment.
if not apply_recursive_permissions(mydir,
gid=portage_gid,
dirmode=dirmode,
dirmask=modemask,
filemode=filemode,
filemask=modemask,
onerror=onerror):
raise OperationNotPermitted(
_("Failed to apply recursive permissions for the portage group."
))
except DirectoryNotFound as e:
failure = True
writemsg(_("\n!!! Directory does not exist: '%s'\n") % \
(e,), noiselevel=-1)
writemsg(_("!!! Disabled FEATURES='%s'\n") % myfeature,
noiselevel=-1)
except PortageException as e:
failure = True
writemsg("\n!!! %s\n" % str(e), noiselevel=-1)
writemsg(_("!!! Failed resetting perms on %s='%s'\n") % \
(kwargs["basedir_var"], basedir), noiselevel=-1)
writemsg(_("!!! Disabled FEATURES='%s'\n") % myfeature,
noiselevel=-1)
if failure:
mysettings.features.remove(myfeature)
mysettings['FEATURES'] = ' '.join(sorted(mysettings.features))
time.sleep(5)
def _lockfile_iteration(mypath,
wantnewlockfile=False,
unlinkfile=False,
waiting_msg=None,
flags=0):
"""
Acquire a lock on mypath, without retry. Return None if the lockfile
was removed by previous lock holder (caller must retry).
@param mypath: lock file path
@type mypath: str
@param wantnewlockfile: use a separate new lock file
@type wantnewlockfile: bool
@param unlinkfile: remove lock file prior to unlock
@type unlinkfile: bool
@param waiting_msg: message to show before blocking
@type waiting_msg: str
@param flags: lock flags (only supports os.O_NONBLOCK)
@type flags: int
@rtype: bool
@return: unlockfile tuple on success, None if retry is needed
"""
if not mypath:
raise InvalidData(_("Empty path given"))
# Since Python 3.4, chown requires int type (no proxies).
portage_gid = int(portage.data.portage_gid)
# Support for file object or integer file descriptor parameters is
# deprecated due to ambiguity in whether or not it's safe to close
# the file descriptor, making it prone to "Bad file descriptor" errors
# or file descriptor leaks.
if isinstance(mypath, basestring) and mypath[-1] == '/':
mypath = mypath[:-1]
lockfilename_path = mypath
if hasattr(mypath, 'fileno'):
warnings.warn(
"portage.locks.lockfile() support for "
"file object parameters is deprecated. Use a file path instead.",
DeprecationWarning,
stacklevel=2)
lockfilename_path = getattr(mypath, 'name', None)
mypath = mypath.fileno()
if isinstance(mypath, int):
warnings.warn(
"portage.locks.lockfile() support for integer file "
"descriptor parameters is deprecated. Use a file path instead.",
DeprecationWarning,
stacklevel=2)
lockfilename = mypath
wantnewlockfile = 0
unlinkfile = 0
elif wantnewlockfile:
base, tail = os.path.split(mypath)
lockfilename = os.path.join(base, "." + tail + ".portage_lockfile")
lockfilename_path = lockfilename
unlinkfile = 1
else:
lockfilename = mypath
if isinstance(mypath, basestring):
if not os.path.exists(os.path.dirname(mypath)):
raise DirectoryNotFound(os.path.dirname(mypath))
preexisting = os.path.exists(lockfilename)
old_mask = os.umask(000)
try:
while True:
try:
myfd = os.open(lockfilename, os.O_CREAT | os.O_RDWR, 0o660)
except OSError as e:
if e.errno in (errno.ENOENT,
errno.ESTALE) and os.path.isdir(
os.path.dirname(lockfilename)):
# Retry required for NFS (see bug 636798).
continue
else:
_raise_exc(e)
else:
break
if not preexisting:
try:
if portage.data.secpass >= 1 and os.stat(
lockfilename).st_gid != portage_gid:
os.chown(lockfilename, -1, portage_gid)
except OSError as e:
if e.errno in (errno.ENOENT, errno.ESTALE):
os.close(myfd)
return None
else:
writemsg("%s: chown('%s', -1, %d)\n" % \
(e, lockfilename, portage_gid), noiselevel=-1)
writemsg(_("Cannot chown a lockfile: '%s'\n") % \
lockfilename, noiselevel=-1)
writemsg(_("Group IDs of current user: %s\n") % \
" ".join(str(n) for n in os.getgroups()),
noiselevel=-1)
finally:
os.umask(old_mask)
elif isinstance(mypath, int):
myfd = mypath
else:
raise ValueError(_("Unknown type passed in '%s': '%s'") % \
(type(mypath), mypath))
# try for a non-blocking lock, if it's held, throw a message
# we're waiting on lockfile and use a blocking attempt.
locking_method = portage._eintr_func_wrapper(_get_lock_fn())
try:
if "__PORTAGE_TEST_HARDLINK_LOCKS" in os.environ:
raise IOError(errno.ENOSYS, "Function not implemented")
locking_method(myfd, fcntl.LOCK_EX | fcntl.LOCK_NB)
except IOError as e:
if not hasattr(e, "errno"):
raise
if e.errno in (errno.EACCES, errno.EAGAIN, errno.ENOLCK):
# resource temp unavailable; eg, someone beat us to the lock.
if flags & os.O_NONBLOCK:
os.close(myfd)
raise TryAgain(mypath)
global _quiet
if _quiet:
out = None
else:
out = portage.output.EOutput()
if waiting_msg is None:
if isinstance(mypath, int):
waiting_msg = _("waiting for lock on fd %i") % myfd
else:
waiting_msg = _("waiting for lock on %s") % lockfilename
if out is not None:
out.ebegin(waiting_msg)
# try for the exclusive lock now.
enolock_msg_shown = False
while True:
try:
locking_method(myfd, fcntl.LOCK_EX)
except EnvironmentError as e:
if e.errno == errno.ENOLCK:
# This is known to occur on Solaris NFS (see
# bug #462694). Assume that the error is due
# to temporary exhaustion of record locks,
# and loop until one becomes available.
if not enolock_msg_shown:
enolock_msg_shown = True
if isinstance(mypath, int):
context_desc = _("Error while waiting "
"to lock fd %i") % myfd
else:
context_desc = _("Error while waiting "
"to lock '%s'") % lockfilename
writemsg("\n!!! %s: %s\n" % (context_desc, e),
noiselevel=-1)
time.sleep(_HARDLINK_POLL_LATENCY)
continue
if out is not None:
out.eend(1, str(e))
raise
else:
break
if out is not None:
out.eend(os.EX_OK)
elif e.errno in (errno.ENOSYS, ):
# We're not allowed to lock on this FS.
if not isinstance(lockfilename, int):
# If a file object was passed in, it's not safe
# to close the file descriptor because it may
# still be in use.
os.close(myfd)
lockfilename_path = _unicode_decode(lockfilename_path,
encoding=_encodings['fs'],
errors='strict')
if not isinstance(lockfilename_path, basestring):
raise
link_success = hardlink_lockfile(lockfilename_path,
waiting_msg=waiting_msg,
flags=flags)
if not link_success:
raise
lockfilename = lockfilename_path
locking_method = None
myfd = HARDLINK_FD
else:
raise
if isinstance(lockfilename,
basestring) and myfd != HARDLINK_FD and unlinkfile:
try:
removed = _lockfile_was_removed(myfd, lockfilename)
except Exception:
# Do not leak the file descriptor here.
os.close(myfd)
raise
else:
if removed:
# Removed by previous lock holder... Caller will retry...
os.close(myfd)
return None
if myfd != HARDLINK_FD:
# FD_CLOEXEC is enabled by default in Python >=3.4.
if sys.hexversion < 0x3040000:
try:
fcntl.FD_CLOEXEC
except AttributeError:
pass
else:
fcntl.fcntl(
myfd, fcntl.F_SETFD,
fcntl.fcntl(myfd, fcntl.F_GETFD) | fcntl.FD_CLOEXEC)
_open_fds.add(myfd)
writemsg(str((lockfilename, myfd, unlinkfile)) + "\n", 1)
return (lockfilename, myfd, unlinkfile, locking_method)
def cacheddir(my_original_path, ignorecvs, ignorelist, EmptyOnError, followSymlinks=True):
global cacheHit,cacheMiss,cacheStale
mypath = normalize_path(my_original_path)
if mypath in dircache:
cacheHit += 1
cached_mtime, list, ftype = dircache[mypath]
else:
cacheMiss += 1
cached_mtime, list, ftype = -1, [], []
try:
pathstat = os.stat(mypath)
if stat.S_ISDIR(pathstat[stat.ST_MODE]):
mtime = pathstat.st_mtime
else:
raise DirectoryNotFound(mypath)
except EnvironmentError as e:
if e.errno == PermissionDenied.errno:
raise PermissionDenied(mypath)
del e
return [], []
except PortageException:
return [], []
# Python retuns mtime in seconds, so if it was changed in the last few seconds, it could be invalid
if mtime != cached_mtime or time.time() - mtime < 4:
if mypath in dircache:
cacheStale += 1
try:
list = os.listdir(mypath)
except EnvironmentError as e:
if e.errno != errno.EACCES:
raise
del e
raise PermissionDenied(mypath)
ftype = []
for x in list:
try:
if followSymlinks:
pathstat = os.stat(mypath+"/"+x)
else:
pathstat = os.lstat(mypath+"/"+x)
if stat.S_ISREG(pathstat[stat.ST_MODE]):
ftype.append(0)
elif stat.S_ISDIR(pathstat[stat.ST_MODE]):
ftype.append(1)
elif stat.S_ISLNK(pathstat[stat.ST_MODE]):
ftype.append(2)
else:
ftype.append(3)
except (IOError, OSError):
ftype.append(3)
dircache[mypath] = mtime, list, ftype
ret_list = []
ret_ftype = []
for x in range(0, len(list)):
if list[x] in ignorelist:
pass
elif ignorecvs:
if list[x][:2] != ".#" and \
not (ftype[x] == 1 and list[x] in _ignorecvs_dirs):
ret_list.append(list[x])
ret_ftype.append(ftype[x])
else:
ret_list.append(list[x])
ret_ftype.append(ftype[x])
writemsg("cacheddirStats: H:%d/M:%d/S:%d\n" % (cacheHit, cacheMiss, cacheStale),10)
return ret_list, ret_ftype
def lockfile(mypath,
wantnewlockfile=0,
unlinkfile=0,
waiting_msg=None,
flags=0):
"""
If wantnewlockfile is True then this creates a lockfile in the parent
directory as the file: '.' + basename + '.portage_lockfile'.
"""
if not mypath:
raise InvalidData(_("Empty path given"))
# Support for file object or integer file descriptor parameters is
# deprecated due to ambiguity in whether or not it's safe to close
# the file descriptor, making it prone to "Bad file descriptor" errors
# or file descriptor leaks.
if isinstance(mypath, basestring) and mypath[-1] == '/':
mypath = mypath[:-1]
lockfilename_path = mypath
if hasattr(mypath, 'fileno'):
warnings.warn(
"portage.locks.lockfile() support for "
"file object parameters is deprecated. Use a file path instead.",
DeprecationWarning,
stacklevel=2)
lockfilename_path = getattr(mypath, 'name', None)
mypath = mypath.fileno()
if isinstance(mypath, int):
warnings.warn(
"portage.locks.lockfile() support for integer file "
"descriptor parameters is deprecated. Use a file path instead.",
DeprecationWarning,
stacklevel=2)
lockfilename = mypath
wantnewlockfile = 0
unlinkfile = 0
elif wantnewlockfile:
base, tail = os.path.split(mypath)
lockfilename = os.path.join(base, "." + tail + ".portage_lockfile")
lockfilename_path = lockfilename
unlinkfile = 1
else:
lockfilename = mypath
if isinstance(mypath, basestring):
if not os.path.exists(os.path.dirname(mypath)):
raise DirectoryNotFound(os.path.dirname(mypath))
preexisting = os.path.exists(lockfilename)
old_mask = os.umask(000)
try:
try:
myfd = os.open(lockfilename, os.O_CREAT | os.O_RDWR, 0o660)
except OSError as e:
func_call = "open('%s')" % lockfilename
if e.errno == OperationNotPermitted.errno:
raise OperationNotPermitted(func_call)
elif e.errno == PermissionDenied.errno:
raise PermissionDenied(func_call)
else:
raise
if not preexisting:
try:
if os.stat(lockfilename).st_gid != portage_gid:
os.chown(lockfilename, -1, portage_gid)
except OSError as e:
if e.errno in (errno.ENOENT, errno.ESTALE):
return lockfile(mypath,
wantnewlockfile=wantnewlockfile,
unlinkfile=unlinkfile,
waiting_msg=waiting_msg,
flags=flags)
else:
writemsg("%s: chown('%s', -1, %d)\n" % \
(e, lockfilename, portage_gid), noiselevel=-1)
writemsg(_("Cannot chown a lockfile: '%s'\n") % \
lockfilename, noiselevel=-1)
writemsg(_("Group IDs of current user: %s\n") % \
" ".join(str(n) for n in os.getgroups()),
noiselevel=-1)
finally:
os.umask(old_mask)
elif isinstance(mypath, int):
myfd = mypath
else:
raise ValueError(_("Unknown type passed in '%s': '%s'") % \
(type(mypath), mypath))
# try for a non-blocking lock, if it's held, throw a message
# we're waiting on lockfile and use a blocking attempt.
locking_method = _default_lock_fn
try:
if "__PORTAGE_TEST_HARDLINK_LOCKS" in os.environ:
raise IOError(errno.ENOSYS, "Function not implemented")
locking_method(myfd, fcntl.LOCK_EX | fcntl.LOCK_NB)
except IOError as e:
if not hasattr(e, "errno"):
raise
if e.errno in (errno.EACCES, errno.EAGAIN):
# resource temp unavailable; eg, someone beat us to the lock.
if flags & os.O_NONBLOCK:
os.close(myfd)
raise TryAgain(mypath)
global _quiet
if _quiet:
out = None
else:
out = portage.output.EOutput()
if waiting_msg is None:
if isinstance(mypath, int):
waiting_msg = _("waiting for lock on fd %i") % myfd
else:
waiting_msg = _("waiting for lock on %s\n") % lockfilename
if out is not None:
out.ebegin(waiting_msg)
# try for the exclusive lock now.
try:
locking_method(myfd, fcntl.LOCK_EX)
except EnvironmentError as e:
if out is not None:
out.eend(1, str(e))
raise
if out is not None:
out.eend(os.EX_OK)
elif e.errno in (errno.ENOSYS, errno.ENOLCK):
# We're not allowed to lock on this FS.
if not isinstance(lockfilename, int):
# If a file object was passed in, it's not safe
# to close the file descriptor because it may
# still be in use.
os.close(myfd)
lockfilename_path = _unicode_decode(lockfilename_path,
encoding=_encodings['fs'],
errors='strict')
if not isinstance(lockfilename_path, basestring):
raise
link_success = hardlink_lockfile(lockfilename_path,
waiting_msg=waiting_msg,
flags=flags)
if not link_success:
raise
lockfilename = lockfilename_path
locking_method = None
myfd = HARDLINK_FD
else:
raise
if isinstance(lockfilename, basestring) and \
myfd != HARDLINK_FD and _fstat_nlink(myfd) == 0:
# The file was deleted on us... Keep trying to make one...
os.close(myfd)
writemsg(_("lockfile recurse\n"), 1)
lockfilename, myfd, unlinkfile, locking_method = lockfile(
mypath,
wantnewlockfile=wantnewlockfile,
unlinkfile=unlinkfile,
waiting_msg=waiting_msg,
flags=flags)
if myfd != HARDLINK_FD:
_open_fds.add(myfd)
writemsg(str((lockfilename, myfd, unlinkfile)) + "\n", 1)
return (lockfilename, myfd, unlinkfile, locking_method)
def lockfile(mypath,
wantnewlockfile=0,
unlinkfile=0,
waiting_msg=None,
flags=0):
"""
If wantnewlockfile is True then this creates a lockfile in the parent
directory as the file: '.' + basename + '.portage_lockfile'.
"""
import fcntl
if not mypath:
raise InvalidData(_("Empty path given"))
if isinstance(mypath, basestring) and mypath[-1] == '/':
mypath = mypath[:-1]
if hasattr(mypath, 'fileno'):
mypath = mypath.fileno()
if isinstance(mypath, int):
lockfilename = mypath
wantnewlockfile = 0
unlinkfile = 0
elif wantnewlockfile:
base, tail = os.path.split(mypath)
lockfilename = os.path.join(base, "." + tail + ".portage_lockfile")
del base, tail
unlinkfile = 1
else:
lockfilename = mypath
if isinstance(mypath, basestring):
if not os.path.exists(os.path.dirname(mypath)):
raise DirectoryNotFound(os.path.dirname(mypath))
preexisting = os.path.exists(lockfilename)
old_mask = os.umask(000)
try:
try:
myfd = os.open(lockfilename, os.O_CREAT | os.O_RDWR, 0o660)
except OSError as e:
func_call = "open('%s')" % lockfilename
if e.errno == OperationNotPermitted.errno:
raise OperationNotPermitted(func_call)
elif e.errno == PermissionDenied.errno:
raise PermissionDenied(func_call)
else:
raise
if not preexisting:
try:
if os.stat(lockfilename).st_gid != portage_gid:
os.chown(lockfilename, -1, portage_gid)
except OSError as e:
if e.errno in (errno.ENOENT, errno.ESTALE):
return lockfile(mypath,
wantnewlockfile=wantnewlockfile,
unlinkfile=unlinkfile,
waiting_msg=waiting_msg,
flags=flags)
else:
writemsg("%s: chown('%s', -1, %d)\n" % \
(e, lockfilename, portage_gid), noiselevel=-1)
writemsg(_("Cannot chown a lockfile: '%s'\n") % \
lockfilename, noiselevel=-1)
writemsg(_("Group IDs of current user: %s\n") % \
" ".join(str(n) for n in os.getgroups()),
noiselevel=-1)
finally:
os.umask(old_mask)
elif isinstance(mypath, int):
myfd = mypath
else:
raise ValueError(_("Unknown type passed in '%s': '%s'") % \
(type(mypath), mypath))
# try for a non-blocking lock, if it's held, throw a message
# we're waiting on lockfile and use a blocking attempt.
locking_method = fcntl.lockf
try:
fcntl.lockf(myfd, fcntl.LOCK_EX | fcntl.LOCK_NB)
except IOError as e:
if "errno" not in dir(e):
raise
if e.errno in (errno.EACCES, errno.EAGAIN):
# resource temp unavailable; eg, someone beat us to the lock.
if flags & os.O_NONBLOCK:
raise TryAgain(mypath)
global _quiet
out = EOutput()
out.quiet = _quiet
if waiting_msg is None:
if isinstance(mypath, int):
waiting_msg = _("waiting for lock on fd %i") % myfd
else:
waiting_msg = _("waiting for lock on %s\n") % lockfilename
out.ebegin(waiting_msg)
# try for the exclusive lock now.
try:
fcntl.lockf(myfd, fcntl.LOCK_EX)
except EnvironmentError as e:
out.eend(1, str(e))
raise
out.eend(os.EX_OK)
elif e.errno == errno.ENOLCK:
# We're not allowed to lock on this FS.
os.close(myfd)
link_success = False
if lockfilename == str(lockfilename):
if wantnewlockfile:
try:
if os.stat(lockfilename)[stat.ST_NLINK] == 1:
os.unlink(lockfilename)
except OSError:
pass
link_success = hardlink_lockfile(lockfilename)
if not link_success:
raise
locking_method = None
myfd = HARDLINK_FD
else:
raise
if isinstance(lockfilename, basestring) and \
myfd != HARDLINK_FD and _fstat_nlink(myfd) == 0:
# The file was deleted on us... Keep trying to make one...
os.close(myfd)
writemsg(_("lockfile recurse\n"), 1)
lockfilename, myfd, unlinkfile, locking_method = lockfile(
mypath,
wantnewlockfile=wantnewlockfile,
unlinkfile=unlinkfile,
waiting_msg=waiting_msg,
flags=flags)
writemsg(str((lockfilename, myfd, unlinkfile)) + "\n", 1)
return (lockfilename, myfd, unlinkfile, locking_method)