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c:\python24\lib \ stat.py



0001 """Constants/functions for interpreting results of os.stat() and os.lstat().
0002 
0003 Suggested usage: from stat import *
0004 """
0005 
0006 # XXX Strictly spoken, this module may have to be adapted for each POSIX
0007 # implementation; in practice, however, the numeric constants used by
0008 # stat() are almost universal (even for stat() emulations on non-UNIX
0009 # systems like MS-DOS).
0010 
0011 # Indices for stat struct members in tuple returned by os.stat()
0012 
0013 ST_MODE  = 0
0014 ST_INO   = 1
0015 ST_DEV   = 2
0016 ST_NLINK = 3
0017 ST_UID   = 4
0018 ST_GID   = 5
0019 ST_SIZE  = 6
0020 ST_ATIME = 7
0021 ST_MTIME = 8
0022 ST_CTIME = 9
0023 
0024 # Extract bits from the mode
0025 
0026 def S_IMODE(mode):
0027     return mode & 07777
0028 
0029 def S_IFMT(mode):
0030     return mode & 0170000
0031 
0032 # Constants used as S_IFMT() for various file types
0033 # (not all are implemented on all systems)
0034 
0035 S_IFDIR  = 0040000
0036 S_IFCHR  = 0020000
0037 S_IFBLK  = 0060000
0038 S_IFREG  = 0100000
0039 S_IFIFO  = 0010000
0040 S_IFLNK  = 0120000
0041 S_IFSOCK = 0140000
0042 
0043 # Functions to test for each file type
0044 
0045 def S_ISDIR(mode):
0046     return S_IFMT(mode) == S_IFDIR
0047 
0048 def S_ISCHR(mode):
0049     return S_IFMT(mode) == S_IFCHR
0050 
0051 def S_ISBLK(mode):
0052     return S_IFMT(mode) == S_IFBLK
0053 
0054 def S_ISREG(mode):
0055     return S_IFMT(mode) == S_IFREG
0056 
0057 def S_ISFIFO(mode):
0058     return S_IFMT(mode) == S_IFIFO
0059 
0060 def S_ISLNK(mode):
0061     return S_IFMT(mode) == S_IFLNK
0062 
0063 def S_ISSOCK(mode):
0064     return S_IFMT(mode) == S_IFSOCK
0065 
0066 # Names for permission bits
0067 
0068 S_ISUID = 04000
0069 S_ISGID = 02000
0070 S_ENFMT = S_ISGID
0071 S_ISVTX = 01000
0072 S_IREAD = 00400
0073 S_IWRITE = 00200
0074 S_IEXEC = 00100
0075 S_IRWXU = 00700
0076 S_IRUSR = 00400
0077 S_IWUSR = 00200
0078 S_IXUSR = 00100
0079 S_IRWXG = 00070
0080 S_IRGRP = 00040
0081 S_IWGRP = 00020
0082 S_IXGRP = 00010
0083 S_IRWXO = 00007
0084 S_IROTH = 00004
0085 S_IWOTH = 00002
0086 S_IXOTH = 00001
0087 

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