1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
|
-- GHC trac #2969
import System.Posix.Files
import System.Posix.Directory
import System.Posix.IO
import Control.Exception as E
import Control.Monad
main = do
cleanup
fs <- testRegular
ds <- testDir
testSymlink fs ds
cleanup
testRegular = do
createFile "regular" ownerReadMode
(fs, _) <- getStatus "regular"
let expected = (False,False,False,True,False,False,False)
actual = snd (statusElements fs)
when (actual /= expected) $
fail "unexpected file status bits for regular file"
return fs
testDir = do
createDirectory "dir" ownerReadMode
(ds, _) <- getStatus "dir"
let expected = (False,False,False,False,True,False,False)
actual = snd (statusElements ds)
when (actual /= expected) $
fail "unexpected file status bits for directory"
return ds
testSymlink fs ds = do
createSymbolicLink "regular" "link-regular"
createSymbolicLink "dir" "link-dir"
(fs', ls) <- getStatus "link-regular"
(ds', lds) <- getStatus "link-dir"
let expected = (False,False,False,False,False,True,False)
actualF = snd (statusElements ls)
actualD = snd (statusElements lds)
when (actualF /= expected) $
fail "unexpected file status bits for symlink to regular file"
when (actualD /= expected) $
fail "unexpected file status bits for symlink to directory"
when (statusElements fs /= statusElements fs') $
fail "status for a file does not match when it's accessed via a symlink"
when (statusElements ds /= statusElements ds') $
fail "status for a directory does not match when it's accessed via a symlink"
cleanup = do
ignoreIOExceptions $ removeDirectory "dir"
mapM_ (ignoreIOExceptions . removeLink)
["regular", "link-regular", "link-dir"]
ignoreIOExceptions io = io `E.catch`
((\_ -> return ()) :: IOException -> IO ())
getStatus f = do
fs <- getFileStatus f
ls <- getSymbolicLinkStatus f
fd <- openFd f ReadOnly Nothing defaultFileFlags
fs' <- getFdStatus fd
when (statusElements fs /= statusElements fs') $
fail "getFileStatus and getFdStatus give inconsistent results"
when (not (isSymbolicLink ls) && statusElements fs /= statusElements fs') $
fail $ "getFileStatus and getSymbolicLinkStatus give inconsistent results "
++ "on a file that is not a symbolic link"
return (fs, ls)
-- Yay for 17-element tuples!
statusElements fs = (,)
(deviceID fs
,fileMode fs
,linkCount fs
,fileOwner fs
,fileGroup fs
,specialDeviceID fs
,fileSize fs
,accessTime fs
,modificationTime fs
,statusChangeTime fs
)
(isBlockDevice fs
,isCharacterDevice fs
,isNamedPipe fs
,isRegularFile fs
,isDirectory fs
,isSymbolicLink fs
,isSocket fs
)
|
