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-rw-r--r--xlators/features/snapview-server/src/snapview-server.h255
1 files changed, 255 insertions, 0 deletions
diff --git a/xlators/features/snapview-server/src/snapview-server.h b/xlators/features/snapview-server/src/snapview-server.h
new file mode 100644
index 00000000000..6472422e715
--- /dev/null
+++ b/xlators/features/snapview-server/src/snapview-server.h
@@ -0,0 +1,255 @@
+/*
+ Copyright (c) 2014 Red Hat, Inc. <http://www.redhat.com>
+ This file is part of GlusterFS.
+
+ This file is licensed to you under your choice of the GNU Lesser
+ General Public License, version 3 or any later version (LGPLv3 or
+ later), or the GNU General Public License, version 2 (GPLv2), in all
+ cases as published by the Free Software Foundation.
+*/
+#ifndef __SNAP_VIEW_H__
+#define __SNAP_VIEW_H__
+
+#include <glusterfs/dict.h>
+#include <glusterfs/defaults.h>
+#include <glusterfs/mem-types.h>
+#include <glusterfs/call-stub.h>
+#include <glusterfs/byte-order.h>
+#include <glusterfs/iatt.h>
+#include <ctype.h>
+#include <sys/uio.h>
+#include <glusterfs/glusterfs.h>
+#include <glusterfs/logging.h>
+#include "glfs.h"
+#include "glfs-handles.h"
+#include "glfs-internal.h"
+#include "glusterfs3-xdr.h"
+#include <glusterfs/glusterfs-acl.h>
+#include <glusterfs/syncop.h>
+#include <glusterfs/list.h>
+#include <glusterfs/timer.h>
+#include "rpc-clnt.h"
+#include "protocol-common.h"
+#include "xdr-generic.h"
+#include "snapview-server-messages.h"
+
+#define DEFAULT_SVD_LOG_FILE_DIRECTORY DATADIR "/log/glusterfs"
+
+#define SNAP_VIEW_MAX_GLFS_T 256
+#define SNAP_VIEW_MAX_GLFS_FDS 1024
+#define SNAP_VIEW_MAX_GLFS_OBJ_HANDLES 1024
+
+#define SVS_STACK_DESTROY(_frame) \
+ do { \
+ ((call_frame_t *)_frame)->local = NULL; \
+ STACK_DESTROY(((call_frame_t *)_frame)->root); \
+ } while (0)
+
+#define SVS_CHECK_VALID_SNAPSHOT_HANDLE(fs, this) \
+ do { \
+ svs_private_t *_private = NULL; \
+ _private = this->private; \
+ int i = 0; \
+ gf_boolean_t found = _gf_false; \
+ glfs_t *tmp_fs = NULL; \
+ LOCK(&_private->snaplist_lock); \
+ { \
+ for (i = 0; i < _private->num_snaps; i++) { \
+ tmp_fs = _private->dirents[i].fs; \
+ gf_log(this->name, GF_LOG_DEBUG, \
+ "snap name: %s, snap volume: %s," \
+ "dirent->fs: %p", \
+ _private->dirents[i].name, \
+ _private->dirents[i].snap_volname, tmp_fs); \
+ if (tmp_fs && fs && (tmp_fs == fs)) { \
+ found = _gf_true; \
+ gf_msg_debug(this->name, 0, \
+ "found the fs " \
+ "instance"); \
+ break; \
+ } \
+ } \
+ } \
+ UNLOCK(&_private->snaplist_lock); \
+ \
+ if (!found) { \
+ gf_log(this->name, GF_LOG_WARNING, \
+ "failed to" \
+ " find the fs instance %p", \
+ fs); \
+ fs = NULL; \
+ } \
+ } while (0)
+
+#define SVS_GET_INODE_CTX_INFO(inode_ctx, fs, object, this, loc, ret, \
+ op_errno, label) \
+ do { \
+ fs = inode_ctx->fs; \
+ object = inode_ctx->object; \
+ SVS_CHECK_VALID_SNAPSHOT_HANDLE(fs, this); \
+ if (!fs) \
+ object = NULL; \
+ \
+ if (!fs || !object) { \
+ int32_t tmp = -1; \
+ char tmp_uuid[64]; \
+ \
+ tmp = svs_get_handle(this, loc, inode_ctx, &op_errno); \
+ if (tmp) { \
+ gf_log(this->name, GF_LOG_ERROR, \
+ "failed to get the handle for %s " \
+ "(gfid: %s)", \
+ loc->path, uuid_utoa_r(loc->inode->gfid, tmp_uuid)); \
+ ret = -1; \
+ goto label; \
+ } \
+ \
+ fs = inode_ctx->fs; \
+ object = inode_ctx->object; \
+ } \
+ } while (0);
+
+#define SVS_STRDUP(dst, src) \
+ do { \
+ if (dst && strcmp(src, dst)) { \
+ GF_FREE(dst); \
+ dst = NULL; \
+ } \
+ \
+ if (!dst) \
+ dst = gf_strdup(src); \
+ } while (0)
+
+int
+svs_mgmt_submit_request(void *req, call_frame_t *frame, glusterfs_ctx_t *ctx,
+ rpc_clnt_prog_t *prog, int procnum, fop_cbk_fn_t cbkfn,
+ xdrproc_t xdrproc);
+
+int
+svs_get_snapshot_list(xlator_t *this);
+
+int
+mgmt_get_snapinfo_cbk(struct rpc_req *req, struct iovec *iov, int count,
+ void *myframe);
+
+typedef enum {
+ SNAP_VIEW_ENTRY_POINT_INODE = 0,
+ SNAP_VIEW_SNAPSHOT_INODE,
+ SNAP_VIEW_VIRTUAL_INODE
+} inode_type_t;
+
+struct svs_inode {
+ glfs_t *fs;
+ glfs_object_t *object;
+ inode_type_t type;
+
+ /* used only for entry point directory where gfid of the directory
+ from where the entry point was entered is saved.
+ */
+ uuid_t pargfid;
+
+ /* This is used to generate gfid for all sub files/dirs under this
+ * snapshot
+ */
+ char *snapname;
+ struct iatt buf;
+};
+typedef struct svs_inode svs_inode_t;
+
+struct svs_fd {
+ glfs_fd_t *fd;
+};
+typedef struct svs_fd svs_fd_t;
+
+struct snap_dirent {
+ char name[NAME_MAX];
+ char uuid[UUID_CANONICAL_FORM_LEN + 1];
+ char snap_volname[NAME_MAX];
+ glfs_t *fs;
+};
+typedef struct snap_dirent snap_dirent_t;
+
+struct svs_private {
+ snap_dirent_t *dirents;
+ int num_snaps;
+ char *volname;
+ struct list_head snaplist;
+ gf_lock_t snaplist_lock;
+ struct rpc_clnt *rpc;
+};
+typedef struct svs_private svs_private_t;
+
+int
+__svs_inode_ctx_set(xlator_t *this, inode_t *inode, svs_inode_t *svs_inode);
+
+svs_inode_t *
+__svs_inode_ctx_get(xlator_t *this, inode_t *inode);
+
+svs_inode_t *
+svs_inode_ctx_get(xlator_t *this, inode_t *inode);
+
+int32_t
+svs_inode_ctx_set(xlator_t *this, inode_t *inode, svs_inode_t *svs_inode);
+
+svs_inode_t *
+svs_inode_ctx_get_or_new(xlator_t *this, inode_t *inode);
+
+int
+__svs_fd_ctx_set(xlator_t *this, fd_t *fd, svs_fd_t *svs_fd);
+
+svs_fd_t *
+__svs_fd_ctx_get(xlator_t *this, fd_t *fd);
+
+svs_fd_t *
+svs_fd_ctx_get(xlator_t *this, fd_t *fd);
+
+int32_t
+svs_fd_ctx_set(xlator_t *this, fd_t *fd, svs_fd_t *svs_fd);
+
+svs_fd_t *
+__svs_fd_ctx_get_or_new(xlator_t *this, fd_t *fd);
+
+svs_fd_t *
+svs_fd_ctx_get_or_new(xlator_t *this, fd_t *fd);
+
+int
+svs_uuid_generate(xlator_t *this, uuid_t gfid, char *snapname,
+ uuid_t origin_gfid);
+
+void
+svs_fill_ino_from_gfid(struct iatt *buf);
+
+void
+svs_iatt_fill(uuid_t gfid, struct iatt *buf);
+
+snap_dirent_t *
+svs_get_latest_snap_entry(xlator_t *this);
+
+glfs_t *
+svs_get_latest_snapshot(xlator_t *this);
+
+glfs_t *
+svs_initialise_snapshot_volume(xlator_t *this, const char *name,
+ int32_t *op_errno);
+
+glfs_t *
+__svs_initialise_snapshot_volume(xlator_t *this, const char *name,
+ int32_t *op_errno);
+
+snap_dirent_t *
+__svs_get_snap_dirent(xlator_t *this, const char *name);
+
+int
+svs_mgmt_init(xlator_t *this);
+
+int32_t
+svs_get_handle(xlator_t *this, loc_t *loc, svs_inode_t *inode_ctx,
+ int32_t *op_errno);
+
+glfs_t *
+svs_inode_glfs_mapping(xlator_t *this, inode_t *inode);
+
+glfs_t *
+svs_inode_ctx_glfs_mapping(xlator_t *this, svs_inode_t *inode_ctx);
+
+#endif /* __SNAP_VIEW_H__ */
generated by cgit (git 2.34.1) at 2025-12-28 10:52:25 +0000