def _parse_color_map(config_root="/", onerror=None):
"""
Parse /etc/portage/color.map and return a dict of error codes.
@param onerror: an optional callback to handle any ParseError that would
otherwise be raised
@type onerror: callable
@rtype: dict
@return: a dictionary mapping color classes to color codes
"""
global codes, _styles
myfile = os.path.join(config_root, COLOR_MAP_FILE)
ansi_code_pattern = re.compile("^[0-9;]*m$")
quotes = "'\""
def strip_quotes(token):
if token[0] in quotes and token[0] == token[-1]:
token = token[1:-1]
return token
try:
with io.open(
_unicode_encode(myfile,
encoding=_encodings["fs"],
errors="strict"),
mode="r",
encoding=_encodings["content"],
errors="replace",
) as f:
lines = f.readlines()
for lineno, line in enumerate(lines):
commenter_pos = line.find("#")
line = line[:commenter_pos].strip()
if len(line) == 0:
continue
split_line = line.split("=")
if len(split_line) != 2:
e = ParseError(
_("'%s', line %s: expected exactly one occurrence of '=' operator"
) % (myfile, lineno))
raise e
if onerror:
onerror(e)
else:
raise e
continue
k = strip_quotes(split_line[0].strip())
v = strip_quotes(split_line[1].strip())
if not k in _styles and not k in codes:
e = ParseError(
_("'%s', line %s: Unknown variable: '%s'") %
(myfile, lineno, k))
if onerror:
onerror(e)
else:
raise e
continue
if ansi_code_pattern.match(v):
if k in _styles:
_styles[k] = (esc_seq + v, )
elif k in codes:
codes[k] = esc_seq + v
else:
code_list = []
for x in v.split():
if x in codes:
if k in _styles:
code_list.append(x)
elif k in codes:
code_list.append(codes[x])
else:
e = ParseError(
_("'%s', line %s: Undefined: '%s'") %
(myfile, lineno, x))
if onerror:
onerror(e)
else:
raise e
if k in _styles:
_styles[k] = tuple(code_list)
elif k in codes:
codes[k] = "".join(code_list)
except (IOError, OSError) as e:
if e.errno == errno.ENOENT:
raise FileNotFound(myfile)
elif e.errno == errno.EACCES:
raise PermissionDenied(myfile)
raise
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)
def getconfig(mycfg, tolerant=0, allow_sourcing=False, expand=True):
if isinstance(expand, dict):
# Some existing variable definitions have been
# passed in, for use in substitutions.
expand_map = expand
expand = True
else:
expand_map = {}
mykeys = {}
f = None
try:
# NOTE: shlex doesn't support unicode objects with Python 2
# (produces spurious \0 characters).
if sys.hexversion < 0x3000000:
f = open(_unicode_encode(mycfg,
encoding=_encodings['fs'], errors='strict'), 'rb')
else:
f = open(_unicode_encode(mycfg,
encoding=_encodings['fs'], errors='strict'), mode='r',
encoding=_encodings['content'], errors='replace')
content = f.read()
except IOError as e:
if e.errno == PermissionDenied.errno:
raise PermissionDenied(mycfg)
if e.errno != errno.ENOENT:
writemsg("open('%s', 'r'): %s\n" % (mycfg, e), noiselevel=-1)
if e.errno not in (errno.EISDIR,):
raise
return None
finally:
if f is not None:
f.close()
# Workaround for avoiding a silent error in shlex that is
# triggered by a source statement at the end of the file
# without a trailing newline after the source statement.
if content and content[-1] != '\n':
content += '\n'
# Warn about dos-style line endings since that prevents
# people from being able to source them with bash.
if '\r' in content:
writemsg(("!!! " + _("Please use dos2unix to convert line endings " + \
"in config file: '%s'") + "\n") % mycfg, noiselevel=-1)
lex = None
try:
if tolerant:
shlex_class = _tolerant_shlex
else:
shlex_class = shlex.shlex
# The default shlex.sourcehook() implementation
# only joins relative paths when the infile
# attribute is properly set.
lex = shlex_class(content, infile=mycfg, posix=True)
lex.wordchars = string.digits + string.ascii_letters + \
"~!@#$%*_\:;?,./-+{}"
lex.quotes="\"'"
if allow_sourcing:
lex.source="source"
while 1:
key=lex.get_token()
if key == "export":
key = lex.get_token()
if key is None:
#normal end of file
break;
equ=lex.get_token()
if (equ==''):
msg = lex.error_leader() + _("Unexpected EOF")
if not tolerant:
raise ParseError(msg)
else:
writemsg("%s\n" % msg, noiselevel=-1)
return mykeys
elif (equ!='='):
msg = lex.error_leader() + \
_("Invalid token '%s' (not '=')") % (equ,)
if not tolerant:
raise ParseError(msg)
else:
writemsg("%s\n" % msg, noiselevel=-1)
return mykeys
val=lex.get_token()
if val is None:
msg = lex.error_leader() + \
_("Unexpected end of config file: variable '%s'") % (key,)
if not tolerant:
raise ParseError(msg)
else:
writemsg("%s\n" % msg, noiselevel=-1)
return mykeys
key = _unicode_decode(key)
val = _unicode_decode(val)
if _invalid_var_name_re.search(key) is not None:
msg = lex.error_leader() + \
_("Invalid variable name '%s'") % (key,)
if not tolerant:
raise ParseError(msg)
writemsg("%s\n" % msg, noiselevel=-1)
continue
if expand:
mykeys[key] = varexpand(val, mydict=expand_map,
error_leader=lex.error_leader)
expand_map[key] = mykeys[key]
else:
mykeys[key] = val
except SystemExit as e:
raise
except Exception as e:
if isinstance(e, ParseError) or lex is None:
raise
msg = _unicode_decode("%s%s") % (lex.error_leader(), e)
writemsg("%s\n" % msg, noiselevel=-1)
raise
return mykeys
def apply_permissions(filename, uid=-1, gid=-1, mode=-1, mask=-1,
stat_cached=None, follow_links=True):
"""Apply user, group, and mode bits to a file if the existing bits do not
already match. The default behavior is to force an exact match of mode
bits. When mask=0 is specified, mode bits on the target file are allowed
to be a superset of the mode argument (via logical OR). When mask>0, the
mode bits that the target file is allowed to have are restricted via
logical XOR.
Returns True if the permissions were modified and False otherwise."""
modified = False
if stat_cached is None:
try:
if follow_links:
stat_cached = os.stat(filename)
else:
stat_cached = os.lstat(filename)
except OSError as oe:
func_call = "stat('%s')" % filename
if oe.errno == errno.EPERM:
raise OperationNotPermitted(func_call)
elif oe.errno == errno.EACCES:
raise PermissionDenied(func_call)
elif oe.errno == errno.ENOENT:
raise FileNotFound(filename)
else:
raise
if (uid != -1 and uid != stat_cached.st_uid) or \
(gid != -1 and gid != stat_cached.st_gid):
try:
if follow_links:
os.chown(filename, uid, gid)
else:
portage.data.lchown(filename, uid, gid)
modified = True
except OSError as oe:
func_call = "chown('%s', %i, %i)" % (filename, uid, gid)
if oe.errno == errno.EPERM:
raise OperationNotPermitted(func_call)
elif oe.errno == errno.EACCES:
raise PermissionDenied(func_call)
elif oe.errno == errno.EROFS:
raise ReadOnlyFileSystem(func_call)
elif oe.errno == errno.ENOENT:
raise FileNotFound(filename)
else:
raise
new_mode = -1
st_mode = stat_cached.st_mode & 0o7777 # protect from unwanted bits
if mask >= 0:
if mode == -1:
mode = 0 # Don't add any mode bits when mode is unspecified.
else:
mode = mode & 0o7777
if (mode & st_mode != mode) or \
((mask ^ st_mode) & st_mode != st_mode):
new_mode = mode | st_mode
new_mode = (mask ^ new_mode) & new_mode
elif mode != -1:
mode = mode & 0o7777 # protect from unwanted bits
if mode != st_mode:
new_mode = mode
# The chown system call may clear S_ISUID and S_ISGID
# bits, so those bits are restored if necessary.
if modified and new_mode == -1 and \
(st_mode & stat.S_ISUID or st_mode & stat.S_ISGID):
if mode == -1:
new_mode = st_mode
else:
mode = mode & 0o7777
if mask >= 0:
new_mode = mode | st_mode
new_mode = (mask ^ new_mode) & new_mode
else:
new_mode = mode
if not (new_mode & stat.S_ISUID or new_mode & stat.S_ISGID):
new_mode = -1
if not follow_links and stat.S_ISLNK(stat_cached.st_mode):
# Mode doesn't matter for symlinks.
new_mode = -1
if new_mode != -1:
try:
os.chmod(filename, new_mode)
modified = True
except OSError as oe:
func_call = "chmod('%s', %s)" % (filename, oct(new_mode))
if oe.errno == errno.EPERM:
raise OperationNotPermitted(func_call)
elif oe.errno == errno.EACCES:
raise PermissionDenied(func_call)
elif oe.errno == errno.EROFS:
raise ReadOnlyFileSystem(func_call)
elif oe.errno == errno.ENOENT:
raise FileNotFound(filename)
raise
return modified
def hardlink_lockfile(lockfilename,
max_wait=DeprecationWarning,
waiting_msg=None,
flags=0):
"""Does the NFS, hardlink shuffle to ensure locking on the disk.
We create a PRIVATE hardlink to the real lockfile, that is just a
placeholder on the disk.
If our file can 2 references, then we have the lock. :)
Otherwise we lather, rise, and repeat.
"""
if max_wait is not DeprecationWarning:
warnings.warn(
"The 'max_wait' parameter of "
"portage.locks.hardlink_lockfile() is now unused. Use "
"flags=os.O_NONBLOCK instead.",
DeprecationWarning,
stacklevel=2)
global _quiet
out = None
displayed_waiting_msg = False
preexisting = os.path.exists(lockfilename)
myhardlock = hardlock_name(lockfilename)
# Since Python 3.4, chown requires int type (no proxies).
portage_gid = int(portage.data.portage_gid)
# myhardlock must not exist prior to our link() call, and we can
# safely unlink it since its file name is unique to our PID
try:
os.unlink(myhardlock)
except OSError as e:
if e.errno in (errno.ENOENT, errno.ESTALE):
pass
else:
func_call = "unlink('%s')" % myhardlock
if e.errno == OperationNotPermitted.errno:
raise OperationNotPermitted(func_call)
elif e.errno == PermissionDenied.errno:
raise PermissionDenied(func_call)
else:
raise
while True:
# create lockfilename if it doesn't exist yet
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)
elif e.errno == ReadOnlyFileSystem.errno:
raise ReadOnlyFileSystem(func_call)
else:
raise
else:
myfd_st = None
try:
myfd_st = os.fstat(myfd)
if not preexisting:
# Don't chown the file if it is preexisting, since we
# want to preserve existing permissions in that case.
if portage.data.secpass >= 1 and myfd_st.st_gid != portage_gid:
os.fchown(myfd, -1, portage_gid)
except OSError as e:
if e.errno not in (errno.ENOENT, errno.ESTALE):
writemsg("%s: fchown('%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)
else:
# another process has removed the file, so we'll have
# to create it again
continue
finally:
os.close(myfd)
# If fstat shows more than one hardlink, then it's extremely
# unlikely that the following link call will result in a lock,
# so optimize away the wasteful link call and sleep or raise
# TryAgain.
if myfd_st is not None and myfd_st.st_nlink < 2:
try:
os.link(lockfilename, myhardlock)
except OSError as e:
func_call = "link('%s', '%s')" % (lockfilename, myhardlock)
if e.errno == OperationNotPermitted.errno:
raise OperationNotPermitted(func_call)
elif e.errno == PermissionDenied.errno:
raise PermissionDenied(func_call)
elif e.errno in (errno.ESTALE, errno.ENOENT):
# another process has removed the file, so we'll have
# to create it again
continue
else:
raise
else:
if hardlink_is_mine(myhardlock, lockfilename):
if out is not None:
out.eend(os.EX_OK)
break
try:
os.unlink(myhardlock)
except OSError as e:
# This should not happen, since the file name of
# myhardlock is unique to our host and PID,
# and the above link() call succeeded.
if e.errno not in (errno.ENOENT, errno.ESTALE):
raise
raise FileNotFound(myhardlock)
if flags & os.O_NONBLOCK:
raise TryAgain(lockfilename)
if out is None and not _quiet:
out = portage.output.EOutput()
if out is not None and not displayed_waiting_msg:
displayed_waiting_msg = True
if waiting_msg is None:
waiting_msg = _("waiting for lock on %s\n") % lockfilename
out.ebegin(waiting_msg)
time.sleep(_HARDLINK_POLL_LATENCY)
return True
def write(self, sign=False, force=False):
""" Write Manifest instance to disk, optionally signing it. Returns
True if the Manifest is actually written, and False if the write
is skipped due to existing Manifest being identical."""
rval = False
if not self.allow_create:
return rval
self.checkIntegrity()
try:
myentries = list(self._createManifestEntries())
update_manifest = True
preserved_stats = {}
preserved_stats[self.pkgdir.rstrip(os.sep)] = os.stat(self.pkgdir)
if myentries and not force:
try:
f = io.open(_unicode_encode(self.getFullname(),
encoding=_encodings['fs'], errors='strict'),
mode='r', encoding=_encodings['repo.content'],
errors='replace')
oldentries = list(self._parseManifestLines(f))
preserved_stats[self.getFullname()] = os.fstat(f.fileno())
f.close()
if len(oldentries) == len(myentries):
update_manifest = False
for i in range(len(oldentries)):
if oldentries[i] != myentries[i]:
update_manifest = True
break
except (IOError, OSError) as e:
if e.errno == errno.ENOENT:
pass
else:
raise
if update_manifest:
if myentries or not (self.thin or self.allow_missing):
# If myentries is empty, don't write an empty manifest
# when thin or allow_missing is enabled. Except for
# thin manifests with no DIST entries, myentries is
# non-empty for all currently known use cases.
write_atomic(self.getFullname(), "".join("%s\n" %
_unicode(myentry) for myentry in myentries))
self._apply_max_mtime(preserved_stats, myentries)
rval = True
else:
# With thin manifest, there's no need to have
# a Manifest file if there are no DIST entries.
try:
os.unlink(self.getFullname())
except OSError as e:
if e.errno != errno.ENOENT:
raise
rval = True
if sign:
self.sign()
except (IOError, OSError) as e:
if e.errno == errno.EACCES:
raise PermissionDenied(str(e))
raise
return rval
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"))
# 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:
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)
elif e.errno == ReadOnlyFileSystem.errno:
raise ReadOnlyFileSystem(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 = 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 _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:
# 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 getconfig(mycfg, tolerant=0, allow_sourcing=False, expand=True):
if isinstance(expand, dict):
# Some existing variable definitions have been
# passed in, for use in substitutions.
expand_map = expand
expand = True
else:
expand_map = {}
mykeys = {}
try:
# Workaround for avoiding a silent error in shlex that
# is triggered by a source statement at the end of the file without a
# trailing newline after the source statement
# NOTE: shex doesn't seem to support unicode objects
# (produces spurious \0 characters with python-2.6.2)
if sys.hexversion < 0x3000000:
content = open(_unicode_encode(mycfg,
encoding=_encodings['fs'], errors='strict'), 'rb').read()
else:
content = open(_unicode_encode(mycfg,
encoding=_encodings['fs'], errors='strict'), mode='r',
encoding=_encodings['content'], errors='replace').read()
if content and content[-1] != '\n':
content += '\n'
except IOError as e:
if e.errno == PermissionDenied.errno:
raise PermissionDenied(mycfg)
if e.errno != errno.ENOENT:
writemsg("open('%s', 'r'): %s\n" % (mycfg, e), noiselevel=-1)
if e.errno not in (errno.EISDIR,):
raise
return None
try:
if tolerant:
shlex_class = _tolerant_shlex
else:
shlex_class = shlex.shlex
# The default shlex.sourcehook() implementation
# only joins relative paths when the infile
# attribute is properly set.
lex = shlex_class(content, infile=mycfg, posix=True)
lex.wordchars = string.digits + string.ascii_letters + \
"~!@#$%*_\:;?,./-+{}"
lex.quotes="\"'"
if allow_sourcing:
lex.source="source"
while 1:
key=lex.get_token()
if key == "export":
key = lex.get_token()
if key is None:
#normal end of file
break;
equ=lex.get_token()
if (equ==''):
#unexpected end of file
#lex.error_leader(self.filename,lex.lineno)
if not tolerant:
writemsg(_("!!! Unexpected end of config file: variable %s\n") % key,
noiselevel=-1)
raise Exception(_("ParseError: Unexpected EOF: %s: on/before line %s") % (mycfg, lex.lineno))
else:
return mykeys
elif (equ!='='):
#invalid token
#lex.error_leader(self.filename,lex.lineno)
if not tolerant:
raise Exception(_("ParseError: Invalid token "
"'%s' (not '='): %s: line %s") % \
(equ, mycfg, lex.lineno))
else:
return mykeys
val=lex.get_token()
if val is None:
#unexpected end of file
#lex.error_leader(self.filename,lex.lineno)
if not tolerant:
writemsg(_("!!! Unexpected end of config file: variable %s\n") % key,
noiselevel=-1)
raise portage.exception.CorruptionError(_("ParseError: Unexpected EOF: %s: line %s") % (mycfg, lex.lineno))
else:
return mykeys
key = _unicode_decode(key)
val = _unicode_decode(val)
if _invalid_var_name_re.search(key) is not None:
if not tolerant:
raise Exception(_(
"ParseError: Invalid variable name '%s': line %s") % \
(key, lex.lineno - 1))
writemsg(_("!!! Invalid variable name '%s': line %s in %s\n") \
% (key, lex.lineno - 1, mycfg), noiselevel=-1)
continue
if expand:
mykeys[key] = varexpand(val, expand_map)
expand_map[key] = mykeys[key]
else:
mykeys[key] = val
except SystemExit as e:
raise
except Exception as e:
raise portage.exception.ParseError(str(e)+" in "+mycfg)
return mykeys
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
