def get_attr_dict():
"""Get a dictionary containing all supported system attributes in the form:
{ <verbose_name>: <compact_option>,
...
}
"""
from pkg.misc import force_text
sys_attrs = {}
for i in range(F_ATTR_ALL):
if not is_supported(i):
continue
key = force_text(ffi.string(lib.attr_to_name(i)))
value = force_text(ffi.string(lib.attr_to_option(i)))
sys_attrs.setdefault(key, value)
return sys_attrs
def fsetattr(filename, attr):
"""Set system attributes for a file. The system attributes can either be
passed as a list of verbose attribute names or a string that consists of
a sequence of compact attribute options.
Raises ValueError for invalid system attributes or OSError (with errno set)
if any of the library calls fail.
Input examples:
verbose attributes example: ['hidden', 'archive', 'sensitive', ... ]
compact attributes example: 'HAT'
"""
from pkg.misc import force_bytes
if not isinstance(filename, six.string_types):
raise TypeError("filename must be string type")
if not attr:
raise TypeError("{0} is not a valid system attribute".format(attr))
compact = False
sys_attr = -1
request = ffi.new("nvlist_t **")
request[0] = ffi.gc(request[0], lib.nvlist_free)
if lib.nvlist_alloc(request, lib.NV_UNIQUE_NAME, 0) != 0:
raise OSError(ffi.errno, os.strerror(ffi.errno))
# A single string indicates system attributes are passed in compact
# form (e.g. AHi), verbose attributes are read as a list of strings.
if isinstance(attr, six.string_types):
compact = True
for c in attr:
c = force_bytes(c)
if compact:
sys_attr = lib.option_to_attr(c)
else:
sys_attr = lib.name_to_attr(c)
if sys_attr == lib.F_ATTR_INVAL:
if compact:
raise ValueError("{0} is not a valid compact system "
"attribute".format(attr))
else:
raise ValueError("{0} is not a valid verbose system "
"attribute".format(attr))
if not is_supported(sys_attr):
if compact:
raise ValueError("{0} is not a supported compact system "
"attribute".format(attr))
else:
raise ValueError("{0} is not a supported verbose system "
"attribute".format(attr))
if lib.nvlist_add_boolean_value(request[0], lib.attr_to_name(sys_attr),
1) != 0:
raise OSError(ffi.errno, os.strerror(ffi.errno))
fd = os.open(filename, os.O_RDONLY)
if fd == -1:
raise OSError(ffi.errno, os.strerror(ffi.errno), filename)
if lib.fsetattr(fd, lib.XATTR_VIEW_READWRITE, request[0]):
os.close(fd)
raise OSError(ffi.errno, os.strerror(ffi.errno), filename)
os.close(fd)