def preinstall(self, pkgplan, orig):
"""If the file exists, check if it is in use."""
if not orig:
return
path = orig.get_installed_path(pkgplan.image.get_root())
if os.path.isfile(path) and self.in_use(path):
raise api_errors.FileInUseException(path)
def preremove(self, pkgplan):
path = self.get_installed_path(pkgplan.image.get_root())
if os.path.isfile(path) and self.in_use(path):
raise api_errors.FileInUseException(path)
def install(self, pkgplan, orig):
"""Client-side method that installs a file."""
mode = None
try:
mode = int(self.attrs.get("mode", None), 8)
except (TypeError, ValueError):
# Mode isn't valid, so let validate raise a more
# informative error.
self.validate(fmri=pkgplan.destination_fmri)
owner, group = self.get_fsobj_uid_gid(pkgplan,
pkgplan.destination_fmri)
final_path = self.get_installed_path(pkgplan.image.get_root())
# Don't allow installation through symlinks.
self.fsobj_checkpath(pkgplan, final_path)
if not os.path.exists(os.path.dirname(final_path)):
self.makedirs(os.path.dirname(final_path),
mode=misc.PKG_DIR_MODE,
fmri=pkgplan.destination_fmri)
elif (not orig and not pkgplan.origin_fmri and "preserve" in self.attrs
and self.attrs["preserve"] not in ("abandon", "install-only")
and os.path.isfile(final_path)):
# Unpackaged editable file is already present during
# initial install; salvage it before continuing.
pkgplan.salvage(final_path)
# XXX If we're upgrading, do we need to preserve file perms from
# existing file?
# check if we have a save_file active; if so, simulate file
# being already present rather than installed from scratch
if "save_file" in self.attrs:
orig = self.restore_file(pkgplan.image)
# See if we need to preserve the file, and if so, set that up.
#
# XXX What happens when we transition from preserve to
# non-preserve or vice versa? Do we want to treat a preserve
# attribute as turning the action into a critical action?
#
# XXX We should save the originally installed file. It can be
# used as an ancestor for a three-way merge, for example. Where
# should it be stored?
pres_type = self._check_preserve(orig, pkgplan)
do_content = True
old_path = None
if pres_type == True or (pres_type and pkgplan.origin_fmri
== pkgplan.destination_fmri):
# File is marked to be preserved and exists so don't
# reinstall content.
do_content = False
elif pres_type == "legacy":
# Only rename old file if this is a transition to
# preserve=legacy from something else.
if orig.attrs.get("preserve", None) != "legacy":
old_path = final_path + ".legacy"
elif pres_type == "renameold.update":
old_path = final_path + ".update"
elif pres_type == "renameold":
old_path = final_path + ".old"
elif pres_type == "renamenew":
final_path = final_path + ".new"
elif pres_type == "abandon":
return
# If it is a directory (and not empty) then we should
# salvage the contents.
if os.path.exists(final_path) and \
not os.path.islink(final_path) and \
os.path.isdir(final_path):
try:
os.rmdir(final_path)
except OSError as e:
if e.errno == errno.ENOENT:
pass
elif e.errno in (errno.EEXIST, errno.ENOTEMPTY):
pkgplan.salvage(final_path)
elif e.errno != errno.EACCES:
# this happens on Windows
raise
# XXX This needs to be modularized.
if do_content and self.needsdata(orig, pkgplan):
tfilefd, temp = tempfile.mkstemp(dir=os.path.dirname(final_path))
if not self.data:
# The state of the filesystem changed after the
# plan was prepared; attempt a one-off
# retrieval of the data.
self.data = self.__set_data(pkgplan)
stream = self.data()
tfile = os.fdopen(tfilefd, "wb")
try:
# Always verify using the most preferred hash
hash_attr, hash_val, hash_func = \
digest.get_preferred_hash(self)
shasum = misc.gunzip_from_stream(stream, tfile, hash_func)
except zlib.error as e:
raise ActionExecutionError(
self,
details=_("Error decompressing payload: "
"{0}").format(" ".join([str(a)
for a in e.args])),
error=e)
finally:
tfile.close()
stream.close()
if shasum != hash_val:
raise ActionExecutionError(
self,
details=_("Action data hash verification "
"failure: expected: {expected} computed: "
"{actual} action: {action}").format(
expected=hash_val,
actual=shasum,
action=self))
else:
temp = final_path
try:
os.chmod(temp, mode)
except OSError as e:
# If the file didn't exist, assume that's intentional,
# and drive on.
if e.errno != errno.ENOENT:
raise
else:
return
try:
portable.chown(temp, owner, group)
except OSError as e:
if e.errno != errno.EPERM:
raise
# XXX There's a window where final_path doesn't exist, but we
# probably don't care.
if do_content and old_path:
try:
portable.rename(final_path, old_path)
except OSError as e:
if e.errno != errno.ENOENT:
# Only care if file isn't gone already.
raise
# This is safe even if temp == final_path.
try:
portable.rename(temp, final_path)
except OSError as e:
raise api_errors.FileInUseException(final_path)
# Handle timestamp if specified (and content was installed).
if do_content and "timestamp" in self.attrs:
t = misc.timestamp_to_time(self.attrs["timestamp"])
try:
os.utime(final_path, (t, t))
except OSError as e:
if e.errno != errno.EACCES:
raise
# On Windows, the time cannot be changed on a
# read-only file
os.chmod(final_path, stat.S_IRUSR | stat.S_IWUSR)
os.utime(final_path, (t, t))
os.chmod(final_path, mode)
# Handle system attributes.
sattr = self.attrs.get("sysattr")
if sattr:
if isinstance(sattr, list):
sattr = ",".join(sattr)
sattrs = sattr.split(",")
if len(sattrs) == 1 and \
sattrs[0] not in portable.get_sysattr_dict():
# not a verbose attr, try as a compact attr seq
arg = sattrs[0]
else:
arg = sattrs
try:
portable.fsetattr(final_path, arg)
except OSError as e:
if e.errno != errno.EINVAL:
raise
warn = _("System attributes are not supported "
"on the target image filesystem; 'sysattr'"
" ignored for {0}").format(self.attrs["path"])
pkgplan.image.imageplan.pd.add_item_message(
pkgplan.destination_fmri,
misc.time_to_timestamp(time.time()), MSG_WARNING, warn)
except ValueError as e:
warn = _("Could not set system attributes for {path}"
"'{attrlist}': {err}").format(attrlist=sattr,
err=e,
path=self.attrs["path"])
pkgplan.image.imageplan.pd.add_item_message(
pkgplan.destination_fmri,
misc.time_to_timestamp(time.time()), MSG_WARNING, warn)
