--- /dev/null
+/*
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+package com.ceph.fs;
+
+import java.io.IOException;
+import java.io.FileNotFoundException;
+import java.net.InetAddress;
+import java.util.concurrent.locks.Lock;
+import java.util.concurrent.locks.ReentrantReadWriteLock;
+import java.lang.String;
+
+import com.ceph.crush.Bucket;
+
+public class CephMount {
+
+ /*
+ * Set via JNI callback in native_ceph_create
+ *
+ * Do not touch!
+ */
+ private long instance_ptr;
+
+ /*
+ * Flags for open().
+ *
+ * Must be synchronized with JNI if changed.
+ */
+ public static final int O_RDONLY = 1;
+ public static final int O_RDWR = 2;
+ public static final int O_APPEND = 4;
+ public static final int O_CREAT = 8;
+ public static final int O_TRUNC = 16;
+ public static final int O_EXCL = 32;
+ public static final int O_WRONLY = 64;
+ public static final int O_DIRECTORY = 128;
+
+ /*
+ * Whence flags for seek().
+ *
+ * Must be synchronized with JNI if changed.
+ */
+ public static final int SEEK_SET = 1;
+ public static final int SEEK_CUR = 2;
+ public static final int SEEK_END = 3;
+
+ /*
+ * Attribute flags for setattr().
+ *
+ * Must be synchronized with JNI if changed.
+ */
+ public static final int SETATTR_MODE = 1;
+ public static final int SETATTR_UID = 2;
+ public static final int SETATTR_GID = 4;
+ public static final int SETATTR_MTIME = 8;
+ public static final int SETATTR_ATIME = 16;
+
+ /*
+ * Flags for setxattr();
+ *
+ * Must be synchronized with JNI if changed.
+ */
+ public static final int XATTR_CREATE = 1;
+ public static final int XATTR_REPLACE = 2;
+ public static final int XATTR_NONE = 3;
+
+ /*
+ * Flags for flock();
+ *
+ * Must be synchronized with JNI if changed.
+ */
+ public static final int LOCK_SH = 1;
+ public static final int LOCK_EX = 2;
+ public static final int LOCK_NB = 4;
+ public static final int LOCK_UN = 8;
+
+ /*
+ * This is run by the class loader and will report early any problems
+ * finding or linking in the shared JNI library.
+ */
+ static {
+ loadLibrary();
+ }
+
+ static synchronized void loadLibrary() {
+ CephNativeLoader.getInstance().loadLibrary();
+ }
+
+ /*
+ * Package-private: called from CephNativeLoader
+ */
+ static native void native_initialize();
+
+ /*
+ * RW lock used for fine grained synchronization to native
+ */
+ private final ReentrantReadWriteLock rwlock = new ReentrantReadWriteLock();
+ private final Lock rlock = rwlock.readLock();
+ private final Lock wlock = rwlock.writeLock();
+
+ /*
+ * Controls clean-up synchronization between the constructor and finalize().
+ * If native_ceph_create fails, then we want a call to finalize() to not
+ * attempt to clean-up native context, because there is none.
+ */
+ private boolean initialized = false;
+
+ /*
+ * Try to clean-up. First, unmount() will catch users who forget to do the
+ * unmount manually. Second, release() will destroy the entire context. It
+ * is safe to call release after a failure in unmount.
+ */
+ protected void finalize() throws Throwable {
+ if (initialized) {
+ try {
+ unmount();
+ } catch (Exception e) {}
+ try {
+ native_ceph_release(instance_ptr);
+ } catch (Exception e) {}
+ }
+ super.finalize();
+ }
+
+ /**
+ * Create a new CephMount with specific client id.
+ *
+ * @param id client id.
+ */
+ public CephMount(String id) {
+ native_ceph_create(this, id);
+ initialized = true;
+ }
+
+ private static native int native_ceph_create(CephMount mount, String id);
+
+ /**
+ * Create a new CephMount with default client id.
+ */
+ public CephMount() {
+ this(null);
+ }
+
+ /**
+ * Activate the mount with a given root path.
+ *
+ * @param root The path to use as the root (pass null for "/").
+ */
+ public void mount(String root) {
+ wlock.lock();
+ try {
+ native_ceph_mount(instance_ptr, root);
+ } finally {
+ wlock.unlock();
+ }
+ }
+
+ private static native int native_ceph_mount(long mountp, String root);
+
+ /**
+ * Deactivate the mount.
+ *
+ * The mount can be reactivated using mount(). Configuration parameters
+ * previously set are not reset.
+ */
+ public void unmount() {
+ wlock.lock();
+ try {
+ native_ceph_unmount(instance_ptr);
+ } finally {
+ wlock.unlock();
+ }
+ }
+
+ private static native int native_ceph_unmount(long mountp);
+
+ /*
+ * Private access to low-level ceph_release.
+ */
+ private static native int native_ceph_release(long mountp);
+
+ /**
+ * Load configuration from a file.
+ *
+ * @param path The path to the configuration file.
+ */
+ public void conf_read_file(String path) throws FileNotFoundException {
+ rlock.lock();
+ try {
+ native_ceph_conf_read_file(instance_ptr, path);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native int native_ceph_conf_read_file(long mountp, String path);
+
+ /**
+ * Set the value of a configuration option.
+ *
+ * @param option The configuration option to modify.
+ * @param value The new value of the option.
+ */
+ public void conf_set(String option, String value) {
+ rlock.lock();
+ try {
+ native_ceph_conf_set(instance_ptr, option, value);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native int native_ceph_conf_set(long mountp, String option, String value);
+
+ /**
+ * Get the value of a configuration option.
+ *
+ * @param option The name of the configuration option.
+ * @return The value of the option or null if option not found
+ */
+ public String conf_get(String option) {
+ rlock.lock();
+ try {
+ return native_ceph_conf_get(instance_ptr, option);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native String native_ceph_conf_get(long mountp, String option);
+
+ /**
+ * Get file system status.
+ *
+ * @param path Path to file in file system.
+ * @param statvfs CephStatVFS structure to hold status.
+ */
+ public void statfs(String path, CephStatVFS statvfs) throws FileNotFoundException {
+ rlock.lock();
+ try {
+ native_ceph_statfs(instance_ptr, path, statvfs);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native int native_ceph_statfs(long mountp, String path, CephStatVFS statvfs);
+
+ /**
+ * Get the current working directory.
+ *
+ * @return The current working directory in Ceph.
+ */
+ public String getcwd() {
+ rlock.lock();
+ try {
+ return native_ceph_getcwd(instance_ptr);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native String native_ceph_getcwd(long mountp);
+
+ /**
+ * Set the current working directory.
+ *
+ * @param path The directory set as the cwd.
+ */
+ public void chdir(String path) throws FileNotFoundException {
+ rlock.lock();
+ try {
+ native_ceph_chdir(instance_ptr, path);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native int native_ceph_chdir(long mountp, String cwd);
+
+ /**
+ * List the contents of a directory.
+ *
+ * @param dir The directory.
+ * @return List of files and directories excluding "." and "..".
+ */
+ public String[] listdir(String dir) throws FileNotFoundException {
+ rlock.lock();
+ try {
+ return native_ceph_listdir(instance_ptr, dir);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native String[] native_ceph_listdir(long mountp, String path);
+
+ /**
+ * Create a hard link to an existing file.
+ *
+ * @param oldpath The target path of the link.
+ * @param newpath The name of the link.
+ */
+ public void link(String oldpath, String newpath) throws FileNotFoundException {
+ rlock.lock();
+ try {
+ native_ceph_link(instance_ptr, oldpath, newpath);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native int native_ceph_link(long mountp, String existing, String newname);
+
+ /**
+ * Unlink/delete a name from the file system.
+ *
+ * @param path The name to unlink/delete.
+ */
+ public void unlink(String path) throws FileNotFoundException {
+ rlock.lock();
+ try {
+ native_ceph_unlink(instance_ptr, path);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native int native_ceph_unlink(long mountp, String path);
+
+ /**
+ * Rename a file or directory.
+ *
+ * @param from The current path.
+ * @param to The new path.
+ */
+ public void rename(String from, String to) throws FileNotFoundException {
+ rlock.lock();
+ try {
+ native_ceph_rename(instance_ptr, from, to);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native int native_ceph_rename(long mountp, String from, String to);
+
+ /**
+ * Create a directory.
+ *
+ * @param path The directory to create.
+ * @param mode The mode of the new directory.
+ */
+ public void mkdir(String path, int mode) {
+ rlock.lock();
+ try {
+ native_ceph_mkdir(instance_ptr, path, mode);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native int native_ceph_mkdir(long mountp, String path, int mode);
+
+ /**
+ * Create a directory and all parents.
+ *
+ * @param path The directory to create.
+ * @param mode The mode of the new directory.
+ */
+ public void mkdirs(String path, int mode) throws IOException {
+ rlock.lock();
+ try {
+ native_ceph_mkdirs(instance_ptr, path, mode);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native int native_ceph_mkdirs(long mountp, String path, int mode);
+
+ /**
+ * Delete a directory.
+ *
+ * @param path The directory to delete.
+ */
+ public void rmdir(String path) throws FileNotFoundException {
+ rlock.lock();
+ try {
+ native_ceph_rmdir(instance_ptr, path);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native int native_ceph_rmdir(long mountp, String path);
+
+ /**
+ * Read the value of a symbolic link.
+ */
+ public String readlink(String path) throws FileNotFoundException {
+ rlock.lock();
+ try {
+ return native_ceph_readlink(instance_ptr, path);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native String native_ceph_readlink(long mountp, String path);
+
+ /**
+ * Create a symbolic link.
+ *
+ * @param oldpath Target of the symbolic link.
+ * @param newpath Name of the link.
+ */
+ public void symlink(String oldpath, String newpath) {
+ rlock.lock();
+ try {
+ native_ceph_symlink(instance_ptr, oldpath, newpath);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native int native_ceph_symlink(long mountp, String existing, String newname);
+
+ /**
+ * Get file status.
+ *
+ * @param path Path of file to stat.
+ * @param stat CephStat structure to hold file status.
+ */
+ public void stat(String path, CephStat stat) throws FileNotFoundException, CephNotDirectoryException {
+ rlock.lock();
+ try {
+ native_ceph_stat(instance_ptr, path, stat);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native int native_ceph_stat(long mountp, String path, CephStat stat);
+
+ /**
+ * Get file status, without following symlinks.
+ *
+ * @param path Path of file to stat.
+ * @param stat CephStat structure to hold file status.
+ */
+ public void lstat(String path, CephStat stat) throws FileNotFoundException, CephNotDirectoryException {
+ rlock.lock();
+ try {
+ native_ceph_lstat(instance_ptr, path, stat);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native int native_ceph_lstat(long mountp, String path, CephStat stat);
+
+ /**
+ * Set file attributes.
+ *
+ * @param path Path to file.
+ * @param stat CephStat structure holding attributes.
+ * @param mask Mask specifying which attributes to set.
+ */
+ public void setattr(String path, CephStat stat, int mask) throws FileNotFoundException {
+ rlock.lock();
+ try {
+ native_ceph_setattr(instance_ptr, path, stat, mask);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native int native_ceph_setattr(long mountp, String relpath, CephStat stat, int mask);
+
+ /**
+ * Change file mode.
+ *
+ * @param path Path to file.
+ * @param mode New mode bits.
+ */
+ public void chmod(String path, int mode) throws FileNotFoundException {
+ rlock.lock();
+ try {
+ native_ceph_chmod(instance_ptr, path, mode);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native int native_ceph_chmod(long mountp, String path, int mode);
+
+ /**
+ * Change file mode of an open file.
+ *
+ * @param fd The open file descriptor to change the mode bits on.
+ * @param mode New mode bits.
+ */
+ public void fchmod(int fd, int mode) {
+ rlock.lock();
+ try {
+ native_ceph_fchmod(instance_ptr, fd, mode);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native int native_ceph_fchmod(long mountp, int fd, int mode);
+
+ /**
+ * Truncate a file to a specified length.
+ *
+ * @param path Path of the file.
+ * @param size New file length.
+ */
+ public void truncate(String path, long size) throws FileNotFoundException {
+ rlock.lock();
+ try {
+ native_ceph_truncate(instance_ptr, path, size);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native int native_ceph_truncate(long mountp, String path, long size);
+
+ /**
+ * Open a file.
+ *
+ * @param path Path of file to open or create.
+ * @param flags Open flags.
+ * @param mode Permission mode.
+ * @return File descriptor.
+ */
+ public int open(String path, int flags, int mode) throws FileNotFoundException {
+ rlock.lock();
+ try {
+ return native_ceph_open(instance_ptr, path, flags, mode);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native int native_ceph_open(long mountp, String path, int flags, int mode);
+
+ /**
+ * Open a file with a specific file layout.
+ *
+ * @param path Path of file to open or create.
+ * @param flags Open flags.
+ * @param mode Permission mode.
+ * @param stripe_unit File layout stripe unit size.
+ * @param stripe_count File layout stripe count.
+ * @param object_size Size of each object.
+ * @param data_pool The target data pool.
+ * @return File descriptor.
+ */
+ public int open(String path, int flags, int mode, int stripe_unit, int stripe_count,
+ int object_size, String data_pool) throws FileNotFoundException {
+ rlock.lock();
+ try {
+ return native_ceph_open_layout(instance_ptr, path, flags, mode, stripe_unit,
+ stripe_count, object_size, data_pool);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native int native_ceph_open_layout(long mountp, String path,
+ int flags, int mode, int stripe_unit, int stripe_count, int object_size, String data_pool);
+
+ /**
+ * Close an open file.
+ *
+ * @param fd The file descriptor.
+ */
+ public void close(int fd) {
+ rlock.lock();
+ try {
+ native_ceph_close(instance_ptr, fd);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native int native_ceph_close(long mountp, int fd);
+
+ /**
+ * Seek to a position in a file.
+ *
+ * @param fd File descriptor.
+ * @param offset New offset.
+ * @param whence Whence value.
+ * @return The new offset.
+ */
+ public long lseek(int fd, long offset, int whence) {
+ rlock.lock();
+ try {
+ return native_ceph_lseek(instance_ptr, fd, offset, whence);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native long native_ceph_lseek(long mountp, int fd, long offset, int whence);
+
+ /**
+ * Read from a file.
+ *
+ * @param fd The file descriptor.
+ * @param buf Buffer to for data read.
+ * @param size Amount of data to read into the buffer.
+ * @param offset Offset to read from (-1 for current position).
+ * @return The number of bytes read.
+ */
+ public long read(int fd, byte[] buf, long size, long offset) {
+ rlock.lock();
+ try {
+ return native_ceph_read(instance_ptr, fd, buf, size, offset);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native long native_ceph_read(long mountp, int fd, byte[] buf, long size, long offset);
+
+ /**
+ * Write to a file at a specific offset.
+ *
+ * @param fd The file descriptor.
+ * @param buf Buffer to write.
+ * @param size Amount of data to write.
+ * @param offset Offset to write from (-1 for current position).
+ * @return The number of bytes written.
+ */
+ public long write(int fd, byte[] buf, long size, long offset) {
+ rlock.lock();
+ try {
+ return native_ceph_write(instance_ptr, fd, buf, size, offset);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native long native_ceph_write(long mountp, int fd, byte[] buf, long size, long offset);
+
+ /**
+ * Truncate a file.
+ *
+ * @param fd File descriptor of the file to truncate.
+ * @param size New file size.
+ */
+ public void ftruncate(int fd, long size) {
+ rlock.lock();
+ try {
+ native_ceph_ftruncate(instance_ptr, fd, size);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native int native_ceph_ftruncate(long mountp, int fd, long size);
+
+ /**
+ * Synchronize a file with the file system.
+ *
+ * @param fd File descriptor to synchronize.
+ * @param dataonly Synchronize only data.
+ */
+ public void fsync(int fd, boolean dataonly) {
+ rlock.lock();
+ try {
+ native_ceph_fsync(instance_ptr, fd, dataonly);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native int native_ceph_fsync(long mountp, int fd, boolean dataonly);
+
+ /**
+ * Apply or remove an advisory lock.
+ *
+ * @param fd File descriptor to lock or unlock.
+ * @param operation the advisory lock operation to be performed on the file
+ * descriptor among LOCK_SH (shared lock), LOCK_EX (exclusive lock),
+ * or LOCK_UN (remove lock). The LOCK_NB value can be ORed to perform a
+ * non-blocking operation.
+ * @param owner the user-supplied owner identifier (an arbitrary integer)
+ */
+ public void flock(int fd, int operation, long owner) throws IOException {
+ rlock.lock();
+ try {
+ native_ceph_flock(instance_ptr, fd, operation, owner);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native int native_ceph_flock(long mountp, int fd, int operation, long owner);
+
+ /**
+ * Get file status.
+ *
+ * @param fd The file descriptor.
+ * @param stat The object in which to store the status.
+ */
+ public void fstat(int fd, CephStat stat) {
+ rlock.lock();
+ try {
+ native_ceph_fstat(instance_ptr, fd, stat);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native int native_ceph_fstat(long mountp, int fd, CephStat stat);
+
+ /**
+ * Synchronize the client with the file system.
+ */
+ public void sync_fs() {
+ rlock.lock();
+ try {
+ native_ceph_sync_fs(instance_ptr);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native int native_ceph_sync_fs(long mountp);
+
+ /**
+ * Get an extended attribute value.
+ *
+ * If the buffer is large enough to hold the entire attribute value, or
+ * buf is null, the size of the value is returned.
+ *
+ * @param path File path.
+ * @param name Name of the attribute.
+ * @param buf Buffer to store attribute value.
+ * @return The length of the attribute value. See description for more
+ * details.
+ */
+ public long getxattr(String path, String name, byte[] buf) throws FileNotFoundException {
+ rlock.lock();
+ try {
+ return native_ceph_getxattr(instance_ptr, path, name, buf);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native long native_ceph_getxattr(long mountp, String path, String name, byte[] buf);
+
+ /**
+ * Get an extended attribute value of a symbolic link.
+ *
+ * If the buffer is large enough to hold the entire attribute value, or
+ * buf is null, the size of the value is returned.
+ *
+ * @param path File path.
+ * @param name Name of attribute.
+ * @param buf Buffer to store attribute value.
+ * @return The length of the attribute value. See description for more
+ * details.
+ */
+ public long lgetxattr(String path, String name, byte[] buf) throws FileNotFoundException {
+ rlock.lock();
+ try {
+ return native_ceph_lgetxattr(instance_ptr, path, name, buf);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native long native_ceph_lgetxattr(long mountp, String path, String name, byte[] buf);
+
+ /**
+ * List extended attributes.
+ *
+ * @param path File path.
+ * @return List of attribute names.
+ */
+ public String[] listxattr(String path) throws FileNotFoundException {
+ rlock.lock();
+ try {
+ return native_ceph_listxattr(instance_ptr, path);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native String[] native_ceph_listxattr(long mountp, String path);
+
+ /**
+ * List extended attributes of a symbolic link.
+ *
+ * @param path File path.
+ * @return List of attribute names.
+ */
+ public String[] llistxattr(String path) throws FileNotFoundException {
+ rlock.lock();
+ try {
+ return native_ceph_llistxattr(instance_ptr, path);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native String[] native_ceph_llistxattr(long mountp, String path);
+
+ /**
+ * Remove an extended attribute.
+ *
+ * @param path File path.
+ * @param name Name of attribute.
+ */
+ public void removexattr(String path, String name) throws FileNotFoundException {
+ rlock.lock();
+ try {
+ native_ceph_removexattr(instance_ptr, path, name);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native int native_ceph_removexattr(long mountp, String path, String name);
+
+ /**
+ * Remove an extended attribute from a symbolic link.
+ *
+ * @param path File path.
+ * @param name Name of attribute.
+ */
+ public void lremovexattr(String path, String name) throws FileNotFoundException {
+ rlock.lock();
+ try {
+ native_ceph_lremovexattr(instance_ptr, path, name);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native int native_ceph_lremovexattr(long mountp, String path, String name);
+
+ /**
+ * Set the value of an extended attribute.
+ *
+ * @param path The file path.
+ * @param name The attribute name.
+ * @param buf The attribute value.
+ * @param size The size of the attribute value.
+ * @param flags Flag controlling behavior (XATTR_CREATE/REPLACE/NONE).
+ */
+ public void setxattr(String path, String name, byte[] buf, long size, int flags) throws FileNotFoundException {
+ rlock.lock();
+ try {
+ native_ceph_setxattr(instance_ptr, path, name, buf, size, flags);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native int native_ceph_setxattr(long mountp, String path, String name, byte[] buf, long size, int flags);
+
+ /**
+ * Set the value of an extended attribute on a symbolic link.
+ *
+ * @param path The file path.
+ * @param name The attribute name.
+ * @param buf The attribute value.
+ * @param size The size of the attribute value.
+ * @param flags Flag controlling behavior (XATTR_CREATE/REPLACE/NONE).
+ */
+ public void lsetxattr(String path, String name, byte[] buf, long size, int flags) throws FileNotFoundException {
+ rlock.lock();
+ try {
+ native_ceph_lsetxattr(instance_ptr, path, name, buf, size, flags);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native int native_ceph_lsetxattr(long mountp, String path, String name, byte[] buf, long size, int flags);
+
+ /**
+ * Get the stripe unit of a file.
+ *
+ * @param fd The file descriptor.
+ * @return The stripe unit.
+ */
+ public int get_file_stripe_unit(int fd) {
+ rlock.lock();
+ try {
+ return native_ceph_get_file_stripe_unit(instance_ptr, fd);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native int native_ceph_get_file_stripe_unit(long mountp, int fd);
+
+ /**
+ * Get the name of the pool a file is stored in.
+ *
+ * @param fd An open file descriptor.
+ * @return The pool name.
+ */
+ public String get_file_pool_name(int fd) {
+ rlock.lock();
+ try {
+ return native_ceph_get_file_pool_name(instance_ptr, fd);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native String native_ceph_get_file_pool_name(long mountp, int fd);
+
+ /**
+ * Get the default data pool of cephfs.
+ *
+ * @return The pool name.
+ */
+ public String get_default_data_pool_name() {
+ rlock.lock();
+ try {
+ return native_ceph_get_default_data_pool_name(instance_ptr);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native String native_ceph_get_default_data_pool_name(long mountp);
+
+ /**
+ * Get the replication of a file.
+ *
+ * @param fd The file descriptor.
+ * @return The file replication.
+ */
+ public int get_file_replication(int fd) {
+ rlock.lock();
+ try {
+ return native_ceph_get_file_replication(instance_ptr, fd);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native int native_ceph_get_file_replication(long mountp, int fd);
+
+ /**
+ * Favor reading from local replicas when possible.
+ *
+ * @param state Enable or disable localized reads.
+ */
+ public void localize_reads(boolean state) {
+ rlock.lock();
+ try {
+ native_ceph_localize_reads(instance_ptr, state);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native int native_ceph_localize_reads(long mountp, boolean on);
+
+ /**
+ * Get file layout stripe unit granularity.
+ *
+ * @return Stripe unit granularity.
+ */
+ public int get_stripe_unit_granularity() {
+ rlock.lock();
+ try {
+ return native_ceph_get_stripe_unit_granularity(instance_ptr);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native int native_ceph_get_stripe_unit_granularity(long mountp);
+
+ /**
+ * Get the pool id for the named pool.
+ *
+ * @param name The pool name.
+ * @return The pool id.
+ */
+ public int get_pool_id(String name) throws CephPoolException {
+ rlock.lock();
+ try {
+ return native_ceph_get_pool_id(instance_ptr, name);
+ } catch (FileNotFoundException e) {
+ throw new CephPoolException("pool name " + name + " not found");
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native int native_ceph_get_pool_id(long mountp, String name) throws FileNotFoundException;
+
+ /**
+ * Get the pool replication factor.
+ *
+ * @param pool_id The pool id.
+ * @return Number of replicas stored in the pool.
+ */
+ public int get_pool_replication(int pool_id) throws CephPoolException {
+ rlock.lock();
+ try {
+ return native_ceph_get_pool_replication(instance_ptr, pool_id);
+ } catch (FileNotFoundException e) {
+ throw new CephPoolException("pool id " + pool_id + " not found");
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native int native_ceph_get_pool_replication(long mountp, int pool_id) throws FileNotFoundException;
+
+ /**
+ * Get file extent containing a given offset.
+ *
+ * @param fd The file descriptor.
+ * @param offset Offset in file.
+ * @return A CephFileExtent object.
+ */
+ public CephFileExtent get_file_extent(int fd, long offset) {
+ rlock.lock();
+ try {
+ return native_ceph_get_file_extent_osds(instance_ptr, fd, offset);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native CephFileExtent native_ceph_get_file_extent_osds(long mountp, int fd, long offset);
+
+ /**
+ * Get the fully qualified CRUSH location of an OSD.
+ *
+ * Returns (type, name) string pairs for each device in the CRUSH bucket
+ * hierarchy starting from the given OSD to the root.
+ *
+ * @param osd The OSD device id.
+ * @return List of pairs.
+ */
+ public Bucket[] get_osd_crush_location(int osd) {
+ rlock.lock();
+ try {
+ String[] parts = native_ceph_get_osd_crush_location(instance_ptr, osd);
+ Bucket[] path = new Bucket[parts.length / 2];
+ for (int i = 0; i < path.length; i++)
+ path[i] = new Bucket(parts[i*2], parts[i*2+1]);
+ return path;
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native String[] native_ceph_get_osd_crush_location(long mountp, int osd);
+
+ /**
+ * Get the network address of an OSD.
+ *
+ * @param osd The OSD device id.
+ * @return The network address.
+ */
+ public InetAddress get_osd_address(int osd) {
+ rlock.lock();
+ try {
+ return native_ceph_get_osd_addr(instance_ptr, osd);
+ } finally {
+ rlock.unlock();
+ }
+ }
+
+ private static native InetAddress native_ceph_get_osd_addr(long mountp, int osd);
+}
Code Review / stor4nfv.git / blobdiff