178 lines
4.9 KiB
Python
178 lines
4.9 KiB
Python
"""Constants/functions for interpreting results of os.stat() and os.lstat().
|
|
|
|
Suggested usage: from stat import *
|
|
"""
|
|
|
|
# Indices for stat struct members in the tuple returned by os.stat()
|
|
|
|
ST_MODE = 0
|
|
ST_INO = 1
|
|
ST_DEV = 2
|
|
ST_NLINK = 3
|
|
ST_UID = 4
|
|
ST_GID = 5
|
|
ST_SIZE = 6
|
|
ST_ATIME = 7
|
|
ST_MTIME = 8
|
|
ST_CTIME = 9
|
|
|
|
# Extract bits from the mode
|
|
|
|
def S_IMODE(mode):
|
|
"""Return the portion of the file's mode that can be set by
|
|
os.chmod().
|
|
"""
|
|
return mode & 0o7777
|
|
|
|
def S_IFMT(mode):
|
|
"""Return the portion of the file's mode that describes the
|
|
file type.
|
|
"""
|
|
return mode & 0o170000
|
|
|
|
# Constants used as S_IFMT() for various file types
|
|
# (not all are implemented on all systems)
|
|
|
|
S_IFDIR = 0o040000 # directory
|
|
S_IFCHR = 0o020000 # character device
|
|
S_IFBLK = 0o060000 # block device
|
|
S_IFREG = 0o100000 # regular file
|
|
S_IFIFO = 0o010000 # fifo (named pipe)
|
|
S_IFLNK = 0o120000 # symbolic link
|
|
S_IFSOCK = 0o140000 # socket file
|
|
|
|
# Functions to test for each file type
|
|
|
|
def S_ISDIR(mode):
|
|
"""Return True if mode is from a directory."""
|
|
return S_IFMT(mode) == S_IFDIR
|
|
|
|
def S_ISCHR(mode):
|
|
"""Return True if mode is from a character special device file."""
|
|
return S_IFMT(mode) == S_IFCHR
|
|
|
|
def S_ISBLK(mode):
|
|
"""Return True if mode is from a block special device file."""
|
|
return S_IFMT(mode) == S_IFBLK
|
|
|
|
def S_ISREG(mode):
|
|
"""Return True if mode is from a regular file."""
|
|
return S_IFMT(mode) == S_IFREG
|
|
|
|
def S_ISFIFO(mode):
|
|
"""Return True if mode is from a FIFO (named pipe)."""
|
|
return S_IFMT(mode) == S_IFIFO
|
|
|
|
def S_ISLNK(mode):
|
|
"""Return True if mode is from a symbolic link."""
|
|
return S_IFMT(mode) == S_IFLNK
|
|
|
|
def S_ISSOCK(mode):
|
|
"""Return True if mode is from a socket."""
|
|
return S_IFMT(mode) == S_IFSOCK
|
|
|
|
# Names for permission bits
|
|
|
|
S_ISUID = 0o4000 # set UID bit
|
|
S_ISGID = 0o2000 # set GID bit
|
|
S_ENFMT = S_ISGID # file locking enforcement
|
|
S_ISVTX = 0o1000 # sticky bit
|
|
S_IREAD = 0o0400 # Unix V7 synonym for S_IRUSR
|
|
S_IWRITE = 0o0200 # Unix V7 synonym for S_IWUSR
|
|
S_IEXEC = 0o0100 # Unix V7 synonym for S_IXUSR
|
|
S_IRWXU = 0o0700 # mask for owner permissions
|
|
S_IRUSR = 0o0400 # read by owner
|
|
S_IWUSR = 0o0200 # write by owner
|
|
S_IXUSR = 0o0100 # execute by owner
|
|
S_IRWXG = 0o0070 # mask for group permissions
|
|
S_IRGRP = 0o0040 # read by group
|
|
S_IWGRP = 0o0020 # write by group
|
|
S_IXGRP = 0o0010 # execute by group
|
|
S_IRWXO = 0o0007 # mask for others (not in group) permissions
|
|
S_IROTH = 0o0004 # read by others
|
|
S_IWOTH = 0o0002 # write by others
|
|
S_IXOTH = 0o0001 # execute by others
|
|
|
|
# Names for file flags
|
|
|
|
UF_NODUMP = 0x00000001 # do not dump file
|
|
UF_IMMUTABLE = 0x00000002 # file may not be changed
|
|
UF_APPEND = 0x00000004 # file may only be appended to
|
|
UF_OPAQUE = 0x00000008 # directory is opaque when viewed through a union stack
|
|
UF_NOUNLINK = 0x00000010 # file may not be renamed or deleted
|
|
UF_COMPRESSED = 0x00000020 # OS X: file is hfs-compressed
|
|
UF_HIDDEN = 0x00008000 # OS X: file should not be displayed
|
|
SF_ARCHIVED = 0x00010000 # file may be archived
|
|
SF_IMMUTABLE = 0x00020000 # file may not be changed
|
|
SF_APPEND = 0x00040000 # file may only be appended to
|
|
SF_NOUNLINK = 0x00100000 # file may not be renamed or deleted
|
|
SF_SNAPSHOT = 0x00200000 # file is a snapshot file
|
|
|
|
|
|
_filemode_table = (
|
|
((S_IFLNK, "l"),
|
|
(S_IFREG, "-"),
|
|
(S_IFBLK, "b"),
|
|
(S_IFDIR, "d"),
|
|
(S_IFCHR, "c"),
|
|
(S_IFIFO, "p")),
|
|
|
|
((S_IRUSR, "r"),),
|
|
((S_IWUSR, "w"),),
|
|
((S_IXUSR|S_ISUID, "s"),
|
|
(S_ISUID, "S"),
|
|
(S_IXUSR, "x")),
|
|
|
|
((S_IRGRP, "r"),),
|
|
((S_IWGRP, "w"),),
|
|
((S_IXGRP|S_ISGID, "s"),
|
|
(S_ISGID, "S"),
|
|
(S_IXGRP, "x")),
|
|
|
|
((S_IROTH, "r"),),
|
|
((S_IWOTH, "w"),),
|
|
((S_IXOTH|S_ISVTX, "t"),
|
|
(S_ISVTX, "T"),
|
|
(S_IXOTH, "x"))
|
|
)
|
|
|
|
def filemode(mode):
|
|
"""Convert a file's mode to a string of the form '-rwxrwxrwx'."""
|
|
perm = []
|
|
for table in _filemode_table:
|
|
for bit, char in table:
|
|
if mode & bit == bit:
|
|
perm.append(char)
|
|
break
|
|
else:
|
|
perm.append("-")
|
|
return "".join(perm)
|
|
|
|
|
|
# Windows FILE_ATTRIBUTE constants for interpreting os.stat()'s
|
|
# "st_file_attributes" member
|
|
|
|
FILE_ATTRIBUTE_ARCHIVE = 32
|
|
FILE_ATTRIBUTE_COMPRESSED = 2048
|
|
FILE_ATTRIBUTE_DEVICE = 64
|
|
FILE_ATTRIBUTE_DIRECTORY = 16
|
|
FILE_ATTRIBUTE_ENCRYPTED = 16384
|
|
FILE_ATTRIBUTE_HIDDEN = 2
|
|
FILE_ATTRIBUTE_INTEGRITY_STREAM = 32768
|
|
FILE_ATTRIBUTE_NORMAL = 128
|
|
FILE_ATTRIBUTE_NOT_CONTENT_INDEXED = 8192
|
|
FILE_ATTRIBUTE_NO_SCRUB_DATA = 131072
|
|
FILE_ATTRIBUTE_OFFLINE = 4096
|
|
FILE_ATTRIBUTE_READONLY = 1
|
|
FILE_ATTRIBUTE_REPARSE_POINT = 1024
|
|
FILE_ATTRIBUTE_SPARSE_FILE = 512
|
|
FILE_ATTRIBUTE_SYSTEM = 4
|
|
FILE_ATTRIBUTE_TEMPORARY = 256
|
|
FILE_ATTRIBUTE_VIRTUAL = 65536
|
|
|
|
|
|
# If available, use C implementation
|
|
try:
|
|
from _stat import *
|
|
except ImportError:
|
|
pass
|