Adding upstream version 18.2.2.upstream/18.2.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 215 insertions, 0 deletions

diff --git a/src/include/cephfs/ceph_ll_client.h b/src/include/cephfs/ceph_ll_client.h
new file mode 100644
index 000000000..ac5b7c224
--- /dev/null
+++ b/src/include/cephfs/ceph_ll_client.h
@@ -0,0 +1,215 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+ * scalable distributed file system
+ *
+ * Copyright (C) Jeff Layton <jlayton@redhat.com>
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software
+ * Foundation.  See file COPYING.
+ */
+
+#ifndef CEPH_CEPH_LL_CLIENT_H
+#define CEPH_CEPH_LL_CLIENT_H
+#include <stdint.h>
+
+#ifdef _WIN32
+#include "include/win32/fs_compat.h"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+
+class Fh;
+
+struct inodeno_t;
+struct vinodeno_t;
+typedef struct vinodeno_t vinodeno;
+
+#else /* __cplusplus */
+
+typedef struct Fh Fh;
+
+typedef struct inodeno_t {
+  uint64_t val;
+} inodeno_t;
+
+typedef struct _snapid_t {
+  uint64_t val;
+} snapid_t;
+
+typedef struct vinodeno_t {
+  inodeno_t ino;
+  snapid_t snapid;
+} vinodeno_t;
+
+#endif /* __cplusplus */
+
+/*
+ * Heavily borrowed from David Howells' draft statx patchset.
+ *
+ * Since the xstat patches are still a work in progress, we borrow its data
+ * structures and #defines to implement ceph_getattrx. Once the xstat stuff
+ * has been merged we should drop this and switch over to using that instead.
+ */
+struct ceph_statx {
+	uint32_t	stx_mask;
+	uint32_t	stx_blksize;
+	uint32_t	stx_nlink;
+	uint32_t	stx_uid;
+	uint32_t	stx_gid;
+	uint16_t	stx_mode;
+	uint64_t	stx_ino;
+	uint64_t	stx_size;
+	uint64_t	stx_blocks;
+	dev_t		stx_dev;
+	dev_t		stx_rdev;
+	struct timespec	stx_atime;
+	struct timespec	stx_ctime;
+	struct timespec	stx_mtime;
+	struct timespec	stx_btime;
+	uint64_t	stx_version;
+};
+
+#define CEPH_STATX_MODE		0x00000001U     /* Want/got stx_mode */
+#define CEPH_STATX_NLINK	0x00000002U     /* Want/got stx_nlink */
+#define CEPH_STATX_UID		0x00000004U     /* Want/got stx_uid */
+#define CEPH_STATX_GID		0x00000008U     /* Want/got stx_gid */
+#define CEPH_STATX_RDEV		0x00000010U     /* Want/got stx_rdev */
+#define CEPH_STATX_ATIME	0x00000020U     /* Want/got stx_atime */
+#define CEPH_STATX_MTIME	0x00000040U     /* Want/got stx_mtime */
+#define CEPH_STATX_CTIME	0x00000080U     /* Want/got stx_ctime */
+#define CEPH_STATX_INO		0x00000100U     /* Want/got stx_ino */
+#define CEPH_STATX_SIZE		0x00000200U     /* Want/got stx_size */
+#define CEPH_STATX_BLOCKS	0x00000400U     /* Want/got stx_blocks */
+#define CEPH_STATX_BASIC_STATS	0x000007ffU     /* The stuff in the normal stat struct */
+#define CEPH_STATX_BTIME	0x00000800U     /* Want/got stx_btime */
+#define CEPH_STATX_VERSION	0x00001000U     /* Want/got stx_version */
+#define CEPH_STATX_ALL_STATS	0x00001fffU     /* All supported stats */
+
+/*
+ * Compatibility macros until these defines make their way into glibc
+ */
+#ifndef AT_STATX_DONT_SYNC
+#define AT_STATX_SYNC_TYPE	0x6000
+#define AT_STATX_SYNC_AS_STAT	0x0000
+#define AT_STATX_FORCE_SYNC	0x2000
+#define AT_STATX_DONT_SYNC	0x4000 /* Don't sync attributes with the server */
+#endif
+
+/*
+ * This is deprecated and just for backwards compatibility.
+ * Please use AT_STATX_DONT_SYNC instead.
+ */
+#define AT_NO_ATTR_SYNC		AT_STATX_DONT_SYNC /* Deprecated */
+
+/*
+ * The statx interfaces only allow these flags. In order to allow us to add
+ * others in the future, we disallow setting any that aren't recognized.
+ */
+#define CEPH_REQ_FLAG_MASK		(AT_SYMLINK_NOFOLLOW|AT_STATX_DONT_SYNC)
+
+/* fallocate mode flags */
+#ifndef FALLOC_FL_KEEP_SIZE
+#define FALLOC_FL_KEEP_SIZE 0x01
+#endif
+#ifndef FALLOC_FL_PUNCH_HOLE
+#define FALLOC_FL_PUNCH_HOLE 0x02
+#endif
+
+/** ceph_deleg_cb_t: Delegation recalls
+ *
+ * Called when there is an outstanding Delegation and there is conflicting
+ * access, either locally or via cap activity.
+ * @fh: open filehandle
+ * @priv: private info registered when delegation was acquired
+ */
+typedef void (*ceph_deleg_cb_t)(Fh *fh, void *priv);
+
+/**
+ * client_ino_callback_t: Inode data/metadata invalidation
+ *
+ * Called when the client wants to invalidate the cached data for a range
+ * in the file.
+ * @handle: client callback handle
+ * @ino: vino of inode to be invalidated
+ * @off: starting offset of content to be invalidated
+ * @len: length of region to invalidate
+ */
+typedef void (*client_ino_callback_t)(void *handle, vinodeno_t ino,
+	      int64_t off, int64_t len);
+
+/**
+ * client_dentry_callback_t: Dentry invalidation
+ *
+ * Called when the client wants to purge a dentry from its cache.
+ * @handle: client callback handle
+ * @dirino: vino of directory that contains dentry to be invalidate
+ * @ino: vino of inode attached to dentry to be invalidated
+ * @name: name of dentry to be invalidated
+ * @len: length of @name
+ */
+typedef void (*client_dentry_callback_t)(void *handle, vinodeno_t dirino,
+					 vinodeno_t ino, const char *name,
+					 size_t len);
+
+/**
+ * client_remount_callback_t: Remount entire fs
+ *
+ * Called when the client needs to purge the dentry cache and the application
+ * doesn't have a way to purge an individual dentry. Mostly used for ceph-fuse
+ * on older kernels.
+ * @handle: client callback handle
+ */
+
+typedef int (*client_remount_callback_t)(void *handle);
+
+/**
+ * client_switch_interrupt_callback_t: Lock request interrupted
+ *
+ * Called before file lock request to set the interrupt handler while waiting
+ * After the wait, called with "data" set to NULL pointer.
+ * @handle: client callback handle
+ * @data: opaque data passed to interrupt before call, NULL pointer after.
+ */
+typedef void (*client_switch_interrupt_callback_t)(void *handle, void *data);
+
+/**
+ * client_umask_callback_t: Fetch umask of actor
+ *
+ * Called when the client needs the umask of the requestor.
+ * @handle: client callback handle
+ */
+typedef mode_t (*client_umask_callback_t)(void *handle);
+
+/**
+ * client_ino_release_t: Request that application release Inode references
+ *
+ * Called when the MDS wants to trim caps and Inode records.
+ * @handle: client callback handle
+ * @ino: vino of Inode being released
+ */
+typedef void (*client_ino_release_t)(void *handle, vinodeno_t ino);
+
+/*
+ * The handle is an opaque value that gets passed to some callbacks. Any fields
+ * set to NULL will be left alone. There is no way to unregister callbacks.
+ */
+struct ceph_client_callback_args {
+  void *handle;
+  client_ino_callback_t ino_cb;
+  client_dentry_callback_t dentry_cb;
+  client_switch_interrupt_callback_t switch_intr_cb;
+  client_remount_callback_t remount_cb;
+  client_umask_callback_t umask_cb;
+  client_ino_release_t ino_release_cb;
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* CEPH_STATX_H */
+