git-annex/Build/Configure.hs
Joey Hess 6eb5c3f479 Do not preserve permissions and acls when copying files from one local git repository to another. Timestamps are still preserved as long as cp --preserve=timestamps is supported.
This avoids cp -a overriding the default mode acls that the user might have
set in a git repository.

With GNU cp, this behavior change should not be a breaking change, because
git-anex also uses rsync sometimes in the same situation, and has only ever
preserved timestamps when using rsync.

Systems without GNU cp will no longer use cp -a, but instead just cp.
So, timestamps will no longer be preserved. Preserving timestamps when
copying between repos is not guaranteed anyway.

Closes: #729757
2014-08-26 17:10:25 -07:00

134 lines
4.6 KiB
Haskell

{- Checks system configuration and generates SysConfig.hs. -}
module Build.Configure where
import System.Directory
import Control.Applicative
import System.Environment (getArgs)
import Control.Monad.IfElse
import Control.Monad
import Build.TestConfig
import Build.Version
import Utility.SafeCommand
import Utility.ExternalSHA
import Utility.Env
import qualified Git.Version
tests :: [TestCase]
tests =
[ TestCase "version" (Config "packageversion" . StringConfig <$> getVersion)
, TestCase "UPGRADE_LOCATION" getUpgradeLocation
, TestCase "git" $ requireCmd "git" "git --version >/dev/null"
, TestCase "git version" getGitVersion
, testCp "cp_a" "-a"
, testCp "cp_p" "-p"
, testCp "cp_preserve_timestamps" "--preserve=timestamps"
, testCp "cp_reflink_auto" "--reflink=auto"
, TestCase "xargs -0" $ requireCmd "xargs_0" "xargs -0 </dev/null"
, TestCase "rsync" $ requireCmd "rsync" "rsync --version >/dev/null"
, TestCase "curl" $ testCmd "curl" "curl --version >/dev/null"
, TestCase "wget" $ testCmd "wget" "wget --version >/dev/null"
, TestCase "bup" $ testCmd "bup" "bup --version >/dev/null"
, TestCase "nice" $ testCmd "nice" "nice true >/dev/null"
, TestCase "ionice" $ testCmd "ionice" "ionice -c3 true >/dev/null"
, TestCase "nocache" $ testCmd "nocache" "nocache true >/dev/null"
, TestCase "gpg" $ maybeSelectCmd "gpg"
[ ("gpg", "--version >/dev/null")
, ("gpg2", "--version >/dev/null") ]
, TestCase "lsof" $ findCmdPath "lsof" "lsof"
, TestCase "git-remote-gcrypt" $ findCmdPath "gcrypt" "git-remote-gcrypt"
, TestCase "ssh connection caching" getSshConnectionCaching
] ++ shaTestCases
[ (1, "da39a3ee5e6b4b0d3255bfef95601890afd80709")
, (256, "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855")
, (512, "cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e")
, (224, "d14a028c2a3a2bc9476102bb288234c415a2b01f828ea62ac5b3e42f")
, (384, "38b060a751ac96384cd9327eb1b1e36a21fdb71114be07434c0cc7bf63f6e1da274edebfe76f65fbd51ad2f14898b95b")
]
{- shaNsum are the program names used by coreutils. Some systems
- install these with 'g' prefixes.
-
- On some systems, shaN is used instead, but on other
- systems, it might be "hashalot", which does not produce
- usable checksums. Only accept programs that produce
- known-good hashes when run on files. -}
shaTestCases :: [(Int, String)] -> [TestCase]
shaTestCases l = map make l
where
make (n, knowngood) = TestCase key $
Config key . MaybeStringConfig <$> search (shacmds n)
where
key = "sha" ++ show n
search [] = return Nothing
search (c:cmds) = do
sha <- externalSHA c n "/dev/null"
if sha == Right knowngood
then return $ Just c
else search cmds
shacmds n = concatMap (\x -> [x, 'g':x]) $
map (\x -> "sha" ++ show n ++ x) ["sum", ""]
tmpDir :: String
tmpDir = "tmp"
testFile :: String
testFile = tmpDir ++ "/testfile"
testCp :: ConfigKey -> String -> TestCase
testCp k option = TestCase cmd $ testCmd k cmdline
where
cmd = "cp " ++ option
cmdline = cmd ++ " " ++ testFile ++ " " ++ testFile ++ ".new"
getUpgradeLocation :: Test
getUpgradeLocation = do
e <- getEnv "UPGRADE_LOCATION"
return $ Config "upgradelocation" $ MaybeStringConfig e
getGitVersion :: Test
getGitVersion = do
v <- Git.Version.installed
let oldestallowed = Git.Version.normalize "1.7.1.0"
when (v < oldestallowed) $
error $ "installed git version " ++ show v ++ " is too old! (Need " ++ show oldestallowed ++ " or newer)"
return $ Config "gitversion" $ StringConfig $ show v
getSshConnectionCaching :: Test
getSshConnectionCaching = Config "sshconnectioncaching" . BoolConfig <$>
boolSystem "sh" [Param "-c", Param "ssh -o ControlPersist=yes -V >/dev/null 2>/dev/null"]
setup :: IO ()
setup = do
createDirectoryIfMissing True tmpDir
writeFile testFile "test file contents"
cleanup :: IO ()
cleanup = removeDirectoryRecursive tmpDir
run :: [TestCase] -> IO ()
run ts = do
args <- getArgs
setup
config <- runTests ts
if args == ["Android"]
then writeSysConfig $ androidConfig config
else writeSysConfig config
cleanup
whenM isReleaseBuild $
cabalSetup "git-annex.cabal"
{- Hard codes some settings to cross-compile for Android. -}
androidConfig :: [Config] -> [Config]
androidConfig c = overrides ++ filter (not . overridden) c
where
overrides =
[ Config "cp_reflink_auto" $ BoolConfig False
, Config "curl" $ BoolConfig False
, Config "sha224" $ MaybeStringConfig Nothing
, Config "sha384" $ MaybeStringConfig Nothing
]
overridden (Config k _) = k `elem` overridekeys
overridekeys = map (\(Config k _) -> k) overrides