diff options
Diffstat (limited to 'org.eclipse.jgit/src/org/eclipse/jgit/util/FS.java')
| -rw-r--r-- | org.eclipse.jgit/src/org/eclipse/jgit/util/FS.java | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/util/FS.java b/org.eclipse.jgit/src/org/eclipse/jgit/util/FS.java index 5cc8afc78b..1be2ef8d01 100644 --- a/org.eclipse.jgit/src/org/eclipse/jgit/util/FS.java +++ b/org.eclipse.jgit/src/org/eclipse/jgit/util/FS.java @@ -236,6 +236,21 @@ public abstract class FS { public abstract boolean supportsExecute(); /** + * Does this file system support atomic file creation via + * java.io.File#createNewFile()? In certain environments (e.g. on NFS) it is + * not guaranteed that when two file system clients run createNewFile() in + * parallel only one will succeed. In such cases both clients may think they + * created a new file. + * + * @return true if this implementation support atomic creation of new + * Files by {@link File#createNewFile()} + * @since 4.5 + */ + public boolean supportsAtomicCreateNewFile() { + return true; + } + + /** * Does this operating system and JRE supports symbolic links. The * capability to handle symbolic links is detected at runtime. * @@ -783,6 +798,22 @@ public abstract class FS { } /** + * Create a new file. See {@link File#createNewFile()}. Subclasses of this + * class may take care to provide a safe implementation for this even if + * {@link #supportsAtomicCreateNewFile()} is <code>false</code> + * + * @param path + * the file to be created + * @return <code>true</code> if the file was created, <code>false</code> if + * the file already existed + * @throws IOException + * @since 4.5 + */ + public boolean createNewFile(File path) throws IOException { + return path.createNewFile(); + } + + /** * See {@link FileUtils#relativizePath(String, String, String, boolean)}. * * @param base |