1 files changed, 0 insertions, 202 deletions
diff --git a/includes/filerepo/backend/lockmanager/FSLockManager.php b/includes/filerepo/backend/lockmanager/FSLockManager.php
deleted file mode 100644
index 42074fd3..00000000
--- a/includes/filerepo/backend/lockmanager/FSLockManager.php
+++ /dev/null
@@ -1,202 +0,0 @@
-<?php
-
-/**
- * Simple version of LockManager based on using FS lock files.
- * All locks are non-blocking, which avoids deadlocks.
- *
- * This should work fine for small sites running off one server.
- * Do not use this with 'lockDirectory' set to an NFS mount unless the
- * NFS client is at least version 2.6.12. Otherwise, the BSD flock()
- * locks will be ignored; see http://nfs.sourceforge.net/#section_d.
- *
- * @ingroup LockManager
- * @since 1.19
- */
-class FSLockManager extends LockManager {
-	/** @var Array Mapping of lock types to the type actually used */
-	protected $lockTypeMap = array(
-		self::LOCK_SH => self::LOCK_SH,
-		self::LOCK_UW => self::LOCK_SH,
-		self::LOCK_EX => self::LOCK_EX
-	);
-
-	protected $lockDir; // global dir for all servers
-
-	/** @var Array Map of (locked key => lock type => lock file handle) */
-	protected $handles = array();
-
-	/**
-	 * Construct a new instance from configuration.
-	 * 
-	 * $config includes:
-	 *     'lockDirectory' : Directory containing the lock files
-	 *
-	 * @param array $config
-	 */
-	function __construct( array $config ) {
-		parent::__construct( $config );
-		$this->lockDir = $config['lockDirectory'];
-	}
-
-	protected function doLock( array $paths, $type ) {
-		$status = Status::newGood();
-
-		$lockedPaths = array(); // files locked in this attempt
-		foreach ( $paths as $path ) {
-			$status->merge( $this->doSingleLock( $path, $type ) );
-			if ( $status->isOK() ) {
-				$lockedPaths[] = $path;
-			} else {
-				// Abort and unlock everything
-				$status->merge( $this->doUnlock( $lockedPaths, $type ) );
-				return $status;
-			}
-		}
-
-		return $status;
-	}
-
-	protected function doUnlock( array $paths, $type ) {
-		$status = Status::newGood();
-
-		foreach ( $paths as $path ) {
-			$status->merge( $this->doSingleUnlock( $path, $type ) );
-		}
-
-		return $status;
-	}
-
-	/**
-	 * Lock a single resource key
-	 *
-	 * @param $path string
-	 * @param $type integer
-	 * @return Status 
-	 */
-	protected function doSingleLock( $path, $type ) {
-		$status = Status::newGood();
-
-		if ( isset( $this->locksHeld[$path][$type] ) ) {
-			++$this->locksHeld[$path][$type];
-		} elseif ( isset( $this->locksHeld[$path][self::LOCK_EX] ) ) {
-			$this->locksHeld[$path][$type] = 1;
-		} else {
-			wfSuppressWarnings();
-			$handle = fopen( $this->getLockPath( $path ), 'a+' );
-			wfRestoreWarnings();
-			if ( !$handle ) { // lock dir missing?
-				wfMkdirParents( $this->lockDir );
-				$handle = fopen( $this->getLockPath( $path ), 'a+' ); // try again
-			}
-			if ( $handle ) {
-				// Either a shared or exclusive lock
-				$lock = ( $type == self::LOCK_SH ) ? LOCK_SH : LOCK_EX;
-				if ( flock( $handle, $lock | LOCK_NB ) ) {
-					// Record this lock as active
-					$this->locksHeld[$path][$type] = 1;
-					$this->handles[$path][$type] = $handle;
-				} else {
-					fclose( $handle );
-					$status->fatal( 'lockmanager-fail-acquirelock', $path );
-				}
-			} else {
-				$status->fatal( 'lockmanager-fail-openlock', $path );
-			}
-		}
-
-		return $status;
-	}
-
-	/**
-	 * Unlock a single resource key
-	 * 
-	 * @param $path string
-	 * @param $type integer
-	 * @return Status 
-	 */
-	protected function doSingleUnlock( $path, $type ) {
-		$status = Status::newGood();
-
-		if ( !isset( $this->locksHeld[$path] ) ) {
-			$status->warning( 'lockmanager-notlocked', $path );
-		} elseif ( !isset( $this->locksHeld[$path][$type] ) ) {
-			$status->warning( 'lockmanager-notlocked', $path );
-		} else {
-			$handlesToClose = array();
-			--$this->locksHeld[$path][$type];
-			if ( $this->locksHeld[$path][$type] <= 0 ) {
-				unset( $this->locksHeld[$path][$type] );
-				// If a LOCK_SH comes in while we have a LOCK_EX, we don't
-				// actually add a handler, so check for handler existence.
-				if ( isset( $this->handles[$path][$type] ) ) {
-					// Mark this handle to be unlocked and closed
-					$handlesToClose[] = $this->handles[$path][$type];
-					unset( $this->handles[$path][$type] );
-				}
-			}
-			// Unlock handles to release locks and delete
-			// any lock files that end up with no locks on them...
-			if ( wfIsWindows() ) {
-				// Windows: for any process, including this one,
-				// calling unlink() on a locked file will fail
-				$status->merge( $this->closeLockHandles( $path, $handlesToClose ) );
-				$status->merge( $this->pruneKeyLockFiles( $path ) );
-			} else {
-				// Unix: unlink() can be used on files currently open by this 
-				// process and we must do so in order to avoid race conditions
-				$status->merge( $this->pruneKeyLockFiles( $path ) );
-				$status->merge( $this->closeLockHandles( $path, $handlesToClose ) );
-			}
-		}
-
-		return $status;
-	}
-
-	private function closeLockHandles( $path, array $handlesToClose ) {
-		$status = Status::newGood();
-		foreach ( $handlesToClose as $handle ) {
-			wfSuppressWarnings();
-			if ( !flock( $handle, LOCK_UN ) ) {
-				$status->fatal( 'lockmanager-fail-releaselock', $path );
-			}
-			if ( !fclose( $handle ) ) {
-				$status->warning( 'lockmanager-fail-closelock', $path );
-			}
-			wfRestoreWarnings();
-		}
-		return $status;
-	}
-
-	private function pruneKeyLockFiles( $path ) {
-		$status = Status::newGood();
-		if ( !count( $this->locksHeld[$path] ) ) {
-			wfSuppressWarnings();
-			# No locks are held for the lock file anymore
-			if ( !unlink( $this->getLockPath( $path ) ) ) {
-				$status->warning( 'lockmanager-fail-deletelock', $path );
-			}
-			wfRestoreWarnings();
-			unset( $this->locksHeld[$path] );
-			unset( $this->handles[$path] );
-		}
-		return $status;
-	}
-
-	/**
-	 * Get the path to the lock file for a key
-	 * @param $path string
-	 * @return string
-	 */
-	protected function getLockPath( $path ) {
-		$hash = self::sha1Base36( $path );
-		return "{$this->lockDir}/{$hash}.lock";
-	}
-
-	function __destruct() {
-		// Make sure remaining locks get cleared for sanity
-		foreach ( $this->locksHeld as $path => $locks ) {
-			$this->doSingleUnlock( $path, self::LOCK_EX );
-			$this->doSingleUnlock( $path, self::LOCK_SH );
-		}
-	}
-}