linux-xattr 0.1.0.0 → 0.1.0.1

raw patch · 5 files changed

+182/−808 lines, 5 filesPVP: major bump suggested

API removals or changes: PVP suggests a major version bump

API changes (from Hackage documentation)

Files

• CHANGELOG.md +11/−0
• LICENSE +24/−668
• README.md +8/−0
• System/Linux/XAttr.hsc +119/−133
• linux-xattr.cabal +20/−7

@@ -0,0 +1,11 @@+Version 0.1.0.1 (2014-04-08)+----------------------------++- Relicense under BSD3.+- Edit description and .cabal file+- Clean up code.++Version 0.1.0.0 (2013-03-15)+----------------------------++- Initial release of `linux-xattr`, previously called `XAttr`.

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@@ -0,0 +1,8 @@+`linux-xattr` provides [Haskell][Haskell] bindings to the Linux syscalls for+reading and manipulating [extended attributes][ea] (`setxattr`, `getxattr`,+`listxattr`, ...).++  [Haskell]:  http://www.haskell.org/+              "Haskell Programming Language"+  [ea]:       http://en.wikipedia.org/wiki/Extended_file_attributes+              "Extended file attributes"

@@ -1,12 +1,24 @@ {-# LANGUAGE ForeignFunctionInterface #-} -{- |XAttr provides bindings to the glibc functions for reading and-manipulating extended attributes (@setxattr@, @getxattr@, @listxattr@,-...).  Each function in this module has two variants: the one with the-name prefixed by \"l\" and \"fd\".  Both of these are identical to the-original version except that the \"l\"-variant does not follow-symbolic link but acts on the link itself, and the \"fd\"-variant take-a file descriptor as argument rather than a @'FilePath'@.  -}+--------------------------------------------------------------------------------+-- |+-- Module      :  $Header$+-- Copyright   :  © 2013-2014 Nicola Squartini+-- License     :  BSD3+--+-- Maintainer  :  Nicola Squartini <tensor5@gmail.com>+-- Stability   :  experimental+-- Portability :  portable+--+-- @linux-xattr@ provides bindings to the Linux syscalls for reading and+-- manipulating extended attributes (@setxattr@, @getxattr@, @listxattr@, ...).+-- Each function in this module has two variants: one with the name prefixed by+-- \"l\" and one prefixed by \"fd\".  Both of these are identical to the+-- original version except that the \"l\"-variant does not follow symbolic link+-- but acts on the link itself, and the \"fd\"-variant take a file descriptor as+-- argument rather than a @'FilePath'@.+--+--------------------------------------------------------------------------------  module System.Linux.XAttr     ( -- * Set extended attributes@@ -37,194 +49,168 @@  #include <sys/xattr.h> -import Data.ByteString (ByteString, packCStringLen, useAsCStringLen)-import Foreign.C ( CInt(..), CSize(..), CString, peekCStringLen-                 , throwErrnoIfMinus1, throwErrnoIfMinus1_, withCString)-import Foreign.Ptr (Ptr, castPtr, nullPtr)-import Foreign.Marshal (allocaBytes)-import System.Posix.Types (CSsize(..), Fd(..))+import           Data.ByteString    (ByteString, packCStringLen,+                                     useAsCStringLen)+import           Foreign.C          (CInt (..), CSize (..), CString,+                                     peekCStringLen, throwErrnoIfMinus1,+                                     throwErrnoIfMinus1_, withCString)+import           Foreign.Marshal    (allocaBytes)+import           Foreign.Ptr        (Ptr, castPtr, nullPtr)+import           System.Posix.Types (CSsize (..), Fd (..)) -xAttrSet :: a-         -> String+xAttrSet :: String          -> ByteString          -> (a -> CString -> Ptr () -> CSize -> CInt -> IO CInt)          -> String          -> CInt+         -> a          -> IO ()-xAttrSet f attr value func name mode = throwErrnoIfMinus1_ name $-                                       withCString attr $-                                       \b -> useAsCStringLen value $-                                       \(c,d) -> func-                                                 f-                                                 b-                                                 (castPtr c)-                                                 (fromIntegral d)-                                                 mode+xAttrSet attr value func name mode f =+    throwErrnoIfMinus1_ name $ withCString attr $ \b ->+        useAsCStringLen value $ \(c,d) ->+            func f b (castPtr c) (fromIntegral d) mode  -- | Set the value of an extended attribute. setXAttr :: FilePath    -- ^ target file          -> String      -- ^ name of attribute to set          -> ByteString  -- ^ value of attribute          -> IO ()-setXAttr path attr value = withCString path $-                           \x -> xAttrSet x attr value c_setxattr "setxattr" 0+setXAttr path attr value =+    withCString path $ xAttrSet attr value c_setxattr "setxattr" 0 --- | Set the value of an extended attribute (do not follow symbolic--- links).+-- | Set the value of an extended attribute (do not follow symbolic links). lSetXAttr :: FilePath -> String -> ByteString -> IO ()-lSetXAttr path attr value = withCString path $-                           \x -> xAttrSet x attr value c_lsetxattr "lsetxattr" 0+lSetXAttr path attr value =+    withCString path $ xAttrSet attr value c_lsetxattr "lsetxattr" 0  -- | Set the value of an extended attribute. fdSetXAttr :: Fd -> String -> ByteString -> IO ()-fdSetXAttr (Fd n) attr value = xAttrSet n attr value c_fsetxattr "fsetxattr" 0-+fdSetXAttr (Fd n) attr value =+    xAttrSet attr value c_fsetxattr "fsetxattr" 0 n --- | Identical to @'setXAttr'@, but if the attribute already exists--- fail and set errno to EEXIST.+-- | Identical to @'setXAttr'@, but if the attribute already exists fail and set+-- errno to EEXIST. createXAttr :: FilePath -> String -> ByteString -> IO ()-createXAttr path attr value = withCString path $-                              \x -> xAttrSet x attr value-                                    c_setxattr-                                    "setxattr"-                                    #{const XATTR_CREATE}-+createXAttr path attr value =+    withCString path $+    xAttrSet attr value c_setxattr "setxattr" #{const XATTR_CREATE} --- | Identical to @'lSetXAttr'@, but if the attribute already exists--- fail and set errno to EEXIST.+-- | Identical to @'lSetXAttr'@, but if the attribute already exists fail and+-- set errno to EEXIST. lCreateXAttr :: FilePath -> String -> ByteString -> IO ()-lCreateXAttr path attr value = withCString path $-                               \x -> xAttrSet x attr value-                                     c_lsetxattr-                                     "lsetxattr"-                                     #{const XATTR_CREATE}+lCreateXAttr path attr value =+    withCString path $+    xAttrSet attr value c_lsetxattr "lsetxattr" #{const XATTR_CREATE} --- | Identical to @'fdSetXAttr'@, but if the attribute already exists--- fail and set errno to EEXIST.+-- | Identical to @'fdSetXAttr'@, but if the attribute already exists fail and+-- set errno to EEXIST. fdCreateXAttr :: Fd -> String -> ByteString -> IO ()-fdCreateXAttr (Fd n) attr value = xAttrSet n attr value-                                  c_fsetxattr-                                  "fsetxattr"-                                  #{const XATTR_CREATE}+fdCreateXAttr (Fd n) attr value =+    xAttrSet attr value c_fsetxattr "fsetxattr" #{const XATTR_CREATE} n --- | Identical to @'setXAttr'@, but if the attribute does not exist--- fail and set errno to ENOATTR.+-- | Identical to @'setXAttr'@, but if the attribute does not exist fail and set+-- errno to ENOATTR. replaceXAttr :: FilePath -> String -> ByteString -> IO ()-replaceXAttr path attr value = withCString path $-                               \x -> xAttrSet x attr value-                                     c_setxattr-                                     "setxattr"-                                     #{const XATTR_REPLACE}+replaceXAttr path attr value =+    withCString path $+    xAttrSet attr value c_setxattr "setxattr" #{const XATTR_REPLACE} --- | Identical to @'lSetXAttr'@, but if the attribute does not exist--- fail and set errno to ENOATTR.+-- | Identical to @'lSetXAttr'@, but if the attribute does not exist fail and+-- set errno to ENOATTR. lReplaceXAttr :: FilePath -> String -> ByteString -> IO ()-lReplaceXAttr path attr value = withCString path $-                                \x -> xAttrSet x attr value-                                      c_lsetxattr-                                      "lsetxattr"-                                      #{const XATTR_REPLACE}+lReplaceXAttr path attr value =+    withCString path $+    xAttrSet attr value c_lsetxattr "lsetxattr" #{const XATTR_REPLACE} --- | Identical to @'fdSetXAttr'@, but if the attribute does not exist--- fail and set errno to ENOATTR.+-- | Identical to @'fdSetXAttr'@, but if the attribute does not exist fail and+-- set errno to ENOATTR. fdReplaceXAttr :: Fd -> String -> ByteString -> IO ()-fdReplaceXAttr (Fd n) attr value = xAttrSet n attr value-                                   c_fsetxattr-                                   "fsetxattr"-                                   #{const XATTR_REPLACE}+fdReplaceXAttr (Fd n) attr value =+    xAttrSet attr value c_fsetxattr "fsetxattr" #{const XATTR_REPLACE} n  -xAttrGet :: a-         -> String+xAttrGet :: String          -> (a -> CString -> Ptr () -> CSize -> IO CSsize)          -> String+         -> a          -> IO ByteString-xAttrGet f attr func name =-    withCString attr $-                    \cstr -> do-                      size <- throwErrnoIfMinus1 name (func f cstr nullPtr 0)-                      allocaBytes (fromIntegral size) $ \p -> do-                               throwErrnoIfMinus1_ name $-                                 func f cstr p (fromIntegral size)-                               packCStringLen (castPtr p, (fromIntegral size))-+xAttrGet attr func name f =+    withCString attr $ \cstr ->+        do size <- throwErrnoIfMinus1 name (func f cstr nullPtr 0)+           allocaBytes (fromIntegral size) $ \p ->+               do throwErrnoIfMinus1_ name $ func f cstr p (fromIntegral size)+                  packCStringLen (castPtr p, fromIntegral size)  -- | Get the value of an extended attribute.-getXAttr :: FilePath     -- ^ target file-         -> String       -- ^ name of the attribute-         -> IO (ByteString)  -- ^ value of the attribute-getXAttr path attr = withCString path $-                     \x -> xAttrGet x attr c_getxattr "getxattr"+getXAttr :: FilePath       -- ^ target file+         -> String         -- ^ name of the attribute+         -> IO ByteString  -- ^ value of the attribute+getXAttr path attr =+    withCString path $ xAttrGet attr c_getxattr "getxattr" --- | Get the value of an extended attribute (do not follow symbolic--- links).-lGetXAttr :: FilePath -> String -> IO (ByteString)-lGetXAttr path attr = withCString path $-                     \x -> xAttrGet x attr c_lgetxattr "lgetxattr"+-- | Get the value of an extended attribute (do not follow symbolic links).+lGetXAttr :: FilePath -> String -> IO ByteString+lGetXAttr path attr =+    withCString path $ xAttrGet attr c_lgetxattr "lgetxattr"  -- | Get the value of an extended attribute.-fdGetXAttr :: Fd -> String -> IO (ByteString)-fdGetXAttr (Fd n) attr = xAttrGet n attr c_fgetxattr "fgetxattr"-+fdGetXAttr :: Fd -> String -> IO ByteString+fdGetXAttr (Fd n) attr =+    xAttrGet attr c_fgetxattr "fgetxattr" n  -xAttrList :: a-          -> (a -> CString -> CSize -> IO CSsize)+xAttrList :: (a -> CString -> CSize -> IO CSsize)           -> String-          -> IO [[Char]]-xAttrList f func name = do-  size <- throwErrnoIfMinus1 name (func f nullPtr 0)-  allocaBytes (fromIntegral size) $ \p ->-      do throwErrnoIfMinus1_ name (func f p (fromIntegral size))-         str <- peekCStringLen (p, (fromIntegral size))-         return $ split str+          -> a+          -> IO [String]+xAttrList func name f =+    do size <- throwErrnoIfMinus1 name (func f nullPtr 0)+       allocaBytes (fromIntegral size) $ \p ->+           do throwErrnoIfMinus1_ name (func f p (fromIntegral size))+              str <- peekCStringLen (p, fromIntegral size)+              return $ split str     where split "" = []-          split xs = (fst c):(split $ tail $ snd c)+          split xs = fst c : split (tail $ snd c)               where c = break (== '\NUL') xs ---- | Get the list of attribute names associated with the given--- @'FilePath'@.+-- | Get the list of attribute names associated with the given @'FilePath'@. listXAttr :: FilePath      -- ^ target file-          -> IO ([String]) -- ^ list of attribute names-listXAttr path = withCString path $-                 \a -> xAttrList a c_listxattr "listxattr"+          -> IO [String] -- ^ list of attribute names+listXAttr path = withCString path $ xAttrList c_listxattr "listxattr" --- | Get the list of attribute names associated with the given--- @'FilePath'@ (do not follow symbolic links).-lListXAttr :: FilePath -> IO ([String])-lListXAttr path = withCString path $-                  \a -> xAttrList a c_llistxattr "llistxattr"+-- | Get the list of attribute names associated with the given @'FilePath'@ (do+-- not follow symbolic links).+lListXAttr :: FilePath -> IO [String]+lListXAttr path =+    withCString path $ xAttrList c_llistxattr "llistxattr" --- | Get the list of attribute names associated with the given file--- descriptor.-fdListXAttr :: Fd -> IO ([String])-fdListXAttr (Fd n) = xAttrList n c_flistxattr "flistxattr"+-- | Get the list of attribute names associated with the given file descriptor.+fdListXAttr :: Fd -> IO [String]+fdListXAttr (Fd n) =+    xAttrList c_flistxattr "flistxattr" n  -xAttrRemove :: a -> String -> (a -> CString -> IO CInt) -> String -> IO ()-xAttrRemove f attr func name = throwErrnoIfMinus1_ name $-                               withCString attr (func f)-+xAttrRemove :: String -> (a -> CString -> IO CInt) -> String -> a -> IO ()+xAttrRemove attr func name f =+    throwErrnoIfMinus1_ name $ withCString attr (func f)  -- | Remove an extended attribute from the given @'FilePath'@.-removeXAttr :: FilePath -- ^ target file-            -> String   -- ^ name of the attribute+removeXAttr :: FilePath  -- ^ target file+            -> String    -- ^ name of the attribute             -> IO () removeXAttr path attr =-    withCString path $-                    \cstr -> xAttrRemove cstr attr c_removexattr "removexattr"+    withCString path $ xAttrRemove attr c_removexattr "removexattr"  -- | Remove an extended attribute from the given @'FilePath'@ (do not follow -- symbolic links). lRemoveXAttr :: FilePath -> String -> IO () lRemoveXAttr path attr =-    withCString path $-                    \cstr -> xAttrRemove cstr attr c_lremovexattr "lremovexattr"+    withCString path $ xAttrRemove attr c_lremovexattr "lremovexattr"  -- | Remove an extended attribute from the given file descriptor. fdRemoveXAttr :: Fd -> String -> IO ()-fdRemoveXAttr (Fd n) attr = xAttrRemove n attr c_fremovexattr "fremovexattr"+fdRemoveXAttr (Fd n) attr =+    xAttrRemove attr c_fremovexattr "fremovexattr" n   foreign import ccall unsafe "setxattr" c_setxattr :: CString

@@ -1,20 +1,33 @@ Name:           linux-xattr-Version:        0.1.0.0+Version:        0.1.0.1 Cabal-Version:  >= 1.8 Build-Type:     Simple-License:        GPL-3+License:        BSD3 License-File:   LICENSE-Copyright:      Copyright © 2013 Nicola Squartini+Copyright:      © 2013-2014 Nicola Squartini Author:         Nicola Squartini Maintainer:     Nicola Squartini <tensor5@gmail.com>-Bug-Reports:    mailto:tensor5@gmail.com+Homepage:       https://github.com/tensor5/linux-xattr+Bug-Reports:    https://github.com/tensor5/linux-xattr/issues Synopsis:       Read, set and list extended attributes Category:       System Description: -  XAttr provides bindings to the glibc functions for reading and-  manipulating extended attributes (@setxattr@, @getxattr@,-  @listxattr@, ...).+  Bindings to the Linux syscalls for reading and manipulating extended+  attributes (@setxattr@, @getxattr@, @listxattr@, ...).++Extra-Source-Files:+  CHANGELOG.md+  README.md++Source-Repository head+  Type:      git+  Location:  git://github.com/tensor5/linux-xattr.git++Source-Repository this+  Type:      git+  Location:  git://github.com/tensor5/linux-xattr.git+  Tag:       v0.1.0.1  Library   Build-Depends:        base == 4.*,