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-rw-r--r--xlators/features/shard/src/shard.h348
1 files changed, 348 insertions, 0 deletions
diff --git a/xlators/features/shard/src/shard.h b/xlators/features/shard/src/shard.h
new file mode 100644
index 00000000000..4fe181b64d5
--- /dev/null
+++ b/xlators/features/shard/src/shard.h
@@ -0,0 +1,348 @@
+/*
+ Copyright (c) 2015 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 __SHARD_H__
+#define __SHARD_H__
+
+#include <glusterfs/xlator.h>
+#include <glusterfs/compat-errno.h>
+#include "shard-messages.h"
+#include <glusterfs/syncop.h>
+
+#define GF_SHARD_DIR ".shard"
+#define GF_SHARD_REMOVE_ME_DIR ".remove_me"
+#define SHARD_MIN_BLOCK_SIZE (4 * GF_UNIT_MB)
+#define SHARD_MAX_BLOCK_SIZE (4 * GF_UNIT_TB)
+#define SHARD_XATTR_PREFIX "trusted.glusterfs.shard."
+#define GF_XATTR_SHARD_BLOCK_SIZE "trusted.glusterfs.shard.block-size"
+/**
+ * Bit masks for the valid flag, which is used while updating ctx
+ **/
+#define SHARD_MASK_BLOCK_SIZE (1 << 0)
+#define SHARD_MASK_PROT (1 << 1)
+#define SHARD_MASK_NLINK (1 << 2)
+#define SHARD_MASK_UID (1 << 3)
+#define SHARD_MASK_GID (1 << 4)
+#define SHARD_MASK_SIZE (1 << 6)
+#define SHARD_MASK_BLOCKS (1 << 7)
+#define SHARD_MASK_TIMES (1 << 8)
+#define SHARD_MASK_OTHERS (1 << 9)
+#define SHARD_MASK_REFRESH_RESET (1 << 10)
+
+#define SHARD_INODE_WRITE_MASK \
+ (SHARD_MASK_SIZE | SHARD_MASK_BLOCKS | SHARD_MASK_TIMES)
+
+#define SHARD_LOOKUP_MASK \
+ (SHARD_MASK_PROT | SHARD_MASK_NLINK | SHARD_MASK_UID | SHARD_MASK_GID | \
+ SHARD_MASK_TIMES | SHARD_MASK_OTHERS)
+
+#define SHARD_ALL_MASK \
+ (SHARD_MASK_BLOCK_SIZE | SHARD_MASK_PROT | SHARD_MASK_NLINK | \
+ SHARD_MASK_UID | SHARD_MASK_GID | SHARD_MASK_SIZE | SHARD_MASK_BLOCKS | \
+ SHARD_MASK_TIMES | SHARD_MASK_OTHERS)
+
+#define get_lowest_block(off, shard_size) ((off) / (shard_size))
+#define get_highest_block(off, len, shard_size) \
+ (((((off) + (len)) == 0) ? 0 : ((off) + (len)-1)) / (shard_size))
+
+int
+shard_unlock_inodelk(call_frame_t *frame, xlator_t *this);
+
+int
+shard_unlock_entrylk(call_frame_t *frame, xlator_t *this);
+
+#define SHARD_ENTRY_FOP_CHECK(loc, op_errno, label) \
+ do { \
+ if ((loc->name && !strcmp(GF_SHARD_DIR, loc->name)) && \
+ (((loc->parent) && __is_root_gfid(loc->parent->gfid)) || \
+ __is_root_gfid(loc->pargfid))) { \
+ op_errno = EPERM; \
+ goto label; \
+ } \
+ \
+ if ((loc->parent && __is_shard_dir(loc->parent->gfid)) || \
+ __is_shard_dir(loc->pargfid)) { \
+ op_errno = EPERM; \
+ goto label; \
+ } \
+ } while (0)
+
+#define SHARD_INODE_OP_CHECK(gfid, err, label) \
+ do { \
+ if (__is_shard_dir(gfid)) { \
+ err = EPERM; \
+ goto label; \
+ } \
+ } while (0)
+
+#define SHARD_STACK_UNWIND(fop, frame, params...) \
+ do { \
+ shard_local_t *__local = NULL; \
+ if (frame) { \
+ __local = frame->local; \
+ if (__local && __local->int_inodelk.acquired_lock) \
+ shard_unlock_inodelk(frame, frame->this); \
+ if (__local && __local->int_entrylk.acquired_lock) \
+ shard_unlock_entrylk(frame, frame->this); \
+ frame->local = NULL; \
+ } \
+ STACK_UNWIND_STRICT(fop, frame, params); \
+ if (__local) { \
+ shard_local_wipe(__local); \
+ mem_put(__local); \
+ } \
+ } while (0)
+
+#define SHARD_STACK_DESTROY(frame) \
+ do { \
+ shard_local_t *__local = NULL; \
+ __local = frame->local; \
+ frame->local = NULL; \
+ STACK_DESTROY(frame->root); \
+ if (__local) { \
+ shard_local_wipe(__local); \
+ mem_put(__local); \
+ } \
+ } while (0);
+
+#define SHARD_INODE_CREATE_INIT(this, block_size, xattr_req, loc, size, \
+ block_count, label) \
+ do { \
+ int __ret = -1; \
+ int64_t *__size_attr = NULL; \
+ uint64_t *__bs = 0; \
+ \
+ __bs = GF_MALLOC(sizeof(uint64_t), gf_shard_mt_uint64_t); \
+ if (!__bs) \
+ goto label; \
+ *__bs = hton64(block_size); \
+ __ret = dict_set_bin(xattr_req, GF_XATTR_SHARD_BLOCK_SIZE, __bs, \
+ sizeof(*__bs)); \
+ if (__ret) { \
+ gf_msg(this->name, GF_LOG_WARNING, 0, SHARD_MSG_DICT_OP_FAILED, \
+ "Failed to set key: %s " \
+ "on path %s", \
+ GF_XATTR_SHARD_BLOCK_SIZE, (loc)->path); \
+ GF_FREE(__bs); \
+ goto label; \
+ } \
+ \
+ __ret = shard_set_size_attrs(size, block_count, &__size_attr); \
+ if (__ret) \
+ goto label; \
+ \
+ __ret = dict_set_bin(xattr_req, GF_XATTR_SHARD_FILE_SIZE, __size_attr, \
+ 8 * 4); \
+ if (__ret) { \
+ gf_msg(this->name, GF_LOG_WARNING, 0, SHARD_MSG_DICT_OP_FAILED, \
+ "Failed to set key: %s " \
+ "on path %s", \
+ GF_XATTR_SHARD_FILE_SIZE, (loc)->path); \
+ GF_FREE(__size_attr); \
+ goto label; \
+ } \
+ } while (0)
+
+#define SHARD_MD_READ_FOP_INIT_REQ_DICT(this, dict, gfid, local, label) \
+ do { \
+ int __ret = -1; \
+ \
+ __ret = dict_set_uint64(dict, GF_XATTR_SHARD_FILE_SIZE, 8 * 4); \
+ if (__ret) { \
+ local->op_ret = -1; \
+ local->op_errno = ENOMEM; \
+ gf_msg(this->name, GF_LOG_WARNING, 0, SHARD_MSG_DICT_OP_FAILED, \
+ "Failed to set dict value:" \
+ " key:%s for %s.", \
+ GF_XATTR_SHARD_FILE_SIZE, uuid_utoa(gfid)); \
+ goto label; \
+ } \
+ } while (0)
+
+#define SHARD_SET_ROOT_FS_ID(frame, local) \
+ do { \
+ if (!local->is_set_fsid) { \
+ local->uid = frame->root->uid; \
+ local->gid = frame->root->gid; \
+ frame->root->uid = 0; \
+ frame->root->gid = 0; \
+ local->is_set_fsid = _gf_true; \
+ } \
+ } while (0)
+
+#define SHARD_UNSET_ROOT_FS_ID(frame, local) \
+ do { \
+ if (local->is_set_fsid) { \
+ frame->root->uid = local->uid; \
+ frame->root->gid = local->gid; \
+ local->is_set_fsid = _gf_false; \
+ } \
+ } while (0)
+
+#define SHARD_TIME_UPDATE(ctx_sec, ctx_nsec, new_sec, new_nsec) \
+ do { \
+ if (ctx_sec == new_sec) \
+ ctx_nsec = new_nsec = max(new_nsec, ctx_nsec); \
+ else if (ctx_sec > new_sec) { \
+ new_sec = ctx_sec; \
+ new_nsec = ctx_nsec; \
+ } else { \
+ ctx_sec = new_sec; \
+ ctx_nsec = new_nsec; \
+ } \
+ } while (0)
+
+typedef enum {
+ SHARD_BG_DELETION_NONE = 0,
+ SHARD_BG_DELETION_LAUNCHING,
+ SHARD_BG_DELETION_IN_PROGRESS,
+} shard_bg_deletion_state_t;
+
+/* rm = "remove me" */
+
+typedef struct shard_priv {
+ uint64_t block_size;
+ uuid_t dot_shard_gfid;
+ uuid_t dot_shard_rm_gfid;
+ inode_t *dot_shard_inode;
+ inode_t *dot_shard_rm_inode;
+ gf_lock_t lock;
+ int inode_count;
+ struct list_head ilist_head;
+ uint32_t deletion_rate;
+ shard_bg_deletion_state_t bg_del_state;
+ gf_boolean_t first_lookup_done;
+ uint64_t lru_limit;
+} shard_priv_t;
+
+typedef struct {
+ loc_t loc;
+ char *domain;
+ struct gf_flock flock;
+ gf_boolean_t acquired_lock;
+} shard_inodelk_t;
+
+typedef struct {
+ loc_t loc;
+ char *domain;
+ char *basename;
+ entrylk_cmd cmd;
+ entrylk_type type;
+ gf_boolean_t acquired_lock;
+} shard_entrylk_t;
+
+typedef int32_t (*shard_post_fop_handler_t)(call_frame_t *frame,
+ xlator_t *this);
+typedef int32_t (*shard_post_resolve_fop_handler_t)(call_frame_t *frame,
+ xlator_t *this);
+typedef int32_t (*shard_post_lookup_shards_fop_handler_t)(call_frame_t *frame,
+ xlator_t *this);
+
+typedef int32_t (*shard_post_mknod_fop_handler_t)(call_frame_t *frame,
+ xlator_t *this);
+
+typedef int32_t (*shard_post_update_size_fop_handler_t)(call_frame_t *frame,
+ xlator_t *this);
+
+typedef struct shard_local {
+ int op_ret;
+ int op_errno;
+ uint64_t first_block;
+ uint64_t last_block;
+ uint64_t num_blocks;
+ int call_count;
+ int eexist_count;
+ int create_count;
+ int xflag;
+ int count;
+ uint32_t flags;
+ uint32_t uid;
+ uint32_t gid;
+ uint64_t block_size;
+ uint64_t dst_block_size;
+ int32_t datasync;
+ off_t offset;
+ size_t total_size;
+ size_t written_size;
+ size_t hole_size;
+ size_t req_size;
+ size_t readdir_size;
+ int64_t delta_size;
+ gf_atomic_t delta_blocks;
+ loc_t loc;
+ loc_t dot_shard_loc;
+ loc_t dot_shard_rm_loc;
+ loc_t loc2;
+ loc_t tmp_loc;
+ fd_t *fd;
+ dict_t *xattr_req;
+ dict_t *xattr_rsp;
+ inode_t **inode_list;
+ glusterfs_fop_t fop;
+ struct iatt prebuf;
+ struct iatt postbuf;
+ struct iatt preoldparent;
+ struct iatt postoldparent;
+ struct iatt prenewparent;
+ struct iatt postnewparent;
+ struct iovec *vector;
+ struct iobref *iobref;
+ struct iobuf *iobuf;
+ gf_dirent_t entries_head;
+ gf_boolean_t is_set_fsid;
+ gf_boolean_t list_inited;
+ shard_post_fop_handler_t handler;
+ shard_post_lookup_shards_fop_handler_t pls_fop_handler;
+ shard_post_resolve_fop_handler_t post_res_handler;
+ shard_post_mknod_fop_handler_t post_mknod_handler;
+ shard_post_update_size_fop_handler_t post_update_size_handler;
+ shard_inodelk_t int_inodelk;
+ shard_entrylk_t int_entrylk;
+ inode_t *resolver_base_inode;
+ gf_boolean_t first_lookup_done;
+ syncbarrier_t barrier;
+ gf_boolean_t lookup_shards_barriered;
+ gf_boolean_t unlink_shards_barriered;
+ gf_boolean_t resolve_not;
+ loc_t newloc;
+ call_frame_t *main_frame;
+ call_frame_t *inodelk_frame;
+ call_frame_t *entrylk_frame;
+ uint32_t deletion_rate;
+ gf_boolean_t cleanup_required;
+ uuid_t base_gfid;
+ char *name;
+} shard_local_t;
+
+typedef struct shard_inode_ctx {
+ uint64_t block_size; /* The block size with which this inode is
+ sharded */
+ struct iatt stat;
+ gf_boolean_t refresh;
+ /* The following members of inode ctx will be applicable only to the
+ * individual shards' ctx and never the base file ctx.
+ */
+ struct list_head ilist;
+ uuid_t base_gfid;
+ int block_num;
+ gf_boolean_t refreshed;
+ struct list_head to_fsync_list;
+ int fsync_needed;
+ inode_t *inode;
+ int fsync_count;
+ inode_t *base_inode;
+} shard_inode_ctx_t;
+
+typedef enum {
+ SHARD_INTERNAL_DIR_DOT_SHARD = 1,
+ SHARD_INTERNAL_DIR_DOT_SHARD_REMOVE_ME,
+} shard_internal_dir_type_t;
+
+#endif /* __SHARD_H__ */
generated by cgit (git 2.34.1) at 2026-01-04 13:59:50 +0000