diff options
Diffstat (limited to 'src/include/cephfs/ceph_ll_client.h')
| -rw-r--r-- | src/include/cephfs/ceph_ll_client.h | 144 |
1 files changed, 144 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 00000000..4f3d4235 --- /dev/null +++ b/src/include/cephfs/ceph_ll_client.h @@ -0,0 +1,144 @@ +// -*- 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 __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_NO_ATTR_SYNC +#define AT_NO_ATTR_SYNC 0x4000 /* Don't sync attributes with the server */ +#endif + +/* + * 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_NO_ATTR_SYNC) + +/* delegation recalls */ +typedef void (*ceph_deleg_cb_t)(Fh *fh, void *priv); + +/* inode data/metadata invalidation */ +typedef void (*client_ino_callback_t)(void *handle, vinodeno_t ino, + int64_t off, int64_t len); + +/* dentry invalidation */ +typedef void (*client_dentry_callback_t)(void *handle, vinodeno_t dirino, + vinodeno_t ino, const char *name, + size_t len); + +/* remount entire fs */ +typedef int (*client_remount_callback_t)(void *handle); + +/* lock request interrupted */ +typedef void (*client_switch_interrupt_callback_t)(void *handle, void *data); + +/* fetch umask of actor */ +typedef mode_t (*client_umask_callback_t)(void *handle); + +/* request that application release Inode references */ +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 */ + |