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/*
Copyright (c) 2010-2013 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 _SERVER_H
#define _SERVER_H
#include <pthread.h>
#include "fd.h"
#include "rpcsvc.h"
#include "fd.h"
#include "protocol-common.h"
#include "server-mem-types.h"
#include "glusterfs3.h"
#include "timer.h"
#include "client_t.h"
#include "gidcache.h"
#include "defaults.h"
#define DEFAULT_BLOCK_SIZE 4194304 /* 4MB */
#define DEFAULT_VOLUME_FILE_PATH CONFDIR "/glusterfs.vol"
#define GF_MAX_SOCKET_WINDOW_SIZE (1 * GF_UNIT_MB)
#define GF_MIN_SOCKET_WINDOW_SIZE (0)
#define CPD_REQ_FIELD(v, f) ((v)->compound_req_u.compound_##f##_req)
#define CPD_RSP_FIELD(v, f) ((v)->compound_rsp_u.compound_##f##_rsp)
#define SERVER_COMMON_RSP_CLEANUP(rsp, fop, i) \
do { \
compound_rsp *this_rsp = NULL; \
this_rsp = &rsp->compound_rsp_array.compound_rsp_array_val[i];\
gf_common_rsp *_this_rsp = &CPD_RSP_FIELD(this_rsp, fop); \
\
GF_FREE (_this_rsp->xdata.xdata_val); \
} while (0)
#define SERVER_FOP_RSP_CLEANUP(rsp, fop, i) \
do { \
compound_rsp *this_rsp = NULL; \
this_rsp = &rsp->compound_rsp_array.compound_rsp_array_val[i];\
gfs3_##fop##_rsp *_this_rsp = &CPD_RSP_FIELD(this_rsp, fop); \
\
GF_FREE (_this_rsp->xdata.xdata_val); \
} while (0)
#define SERVER_COMPOUND_FOP_CLEANUP(curr_req, fop) \
do { \
gfs3_##fop##_req *_req = &CPD_REQ_FIELD(curr_req, fop); \
\
free (_req->xdata.xdata_val); \
} while (0)
typedef enum {
INTERNAL_LOCKS = 1,
POSIX_LOCKS = 2,
} server_lock_flags_t;
typedef struct _server_state server_state_t;
int server_null (rpcsvc_request_t *req);
struct _volfile_ctx {
struct _volfile_ctx *next;
char *key;
uint32_t checksum;
};
struct _child_status {
struct list_head status_list;
char *name;
gf_boolean_t child_up;
};
struct server_conf {
rpcsvc_t *rpc;
struct rpcsvc_config rpc_conf;
int inode_lru_limit;
gf_boolean_t verify_volfile;
gf_boolean_t trace;
gf_boolean_t lk_heal; /* If true means lock self
heal is on else off. */
char *conf_dir;
struct _volfile_ctx *volfile;
uint32_t grace_timeout;
dict_t *auth_modules;
pthread_mutex_t mutex;
struct list_head xprt_list;
pthread_t barrier_th;
gf_boolean_t server_manage_gids; /* resolve gids on brick */
gid_cache_t gid_cache;
int32_t gid_cache_timeout;
int event_threads; /* # of event threads
* configured */
gf_boolean_t parent_up;
gf_boolean_t dync_auth; /* if set authenticate dynamically,
* in case if volume set options
* (say *.allow | *.reject) are
* tweeked */
struct _child_status *child_status;
gf_lock_t itable_lock;
};
typedef struct server_conf server_conf_t;
typedef enum {
RESOLVE_MUST = 1,
RESOLVE_NOT,
RESOLVE_MAY,
RESOLVE_DONTCARE,
RESOLVE_EXACT
} server_resolve_type_t;
struct resolve_comp {
char *basename;
inode_t *inode;
};
typedef struct {
server_resolve_type_t type;
int64_t fd_no;
u_char gfid[16];
u_char pargfid[16];
char *path;
char *bname;
int op_ret;
int op_errno;
loc_t resolve_loc;
} server_resolve_t;
typedef int (*server_resume_fn_t) (call_frame_t *frame, xlator_t *bound_xl);
int
resolve_and_resume (call_frame_t *frame, server_resume_fn_t fn);
struct _server_state {
rpc_transport_t *xprt;
inode_table_t *itable;
server_resume_fn_t resume_fn;
loc_t loc;
loc_t loc2;
server_resolve_t resolve;
server_resolve_t resolve2;
/* used within resolve_and_resume */
loc_t *loc_now;
server_resolve_t *resolve_now;
struct iatt stbuf;
int valid;
fd_t *fd;
dict_t *params;
int32_t flags;
int wbflags;
struct iovec payload_vector[MAX_IOVEC];
int payload_count;
struct iobuf *iobuf;
struct iobref *iobref;
size_t size;
off_t offset;
mode_t mode;
dev_t dev;
size_t nr_count;
int cmd;
int type;
char *name;
int name_len;
int mask;
char is_revalidate;
dict_t *dict;
struct gf_flock flock;
const char *volume;
dir_entry_t *entry;
gf_seek_what_t what;
dict_t *xdata;
mode_t umask;
struct gf_lease lease;
lock_migration_info_t locklist;
/* required for compound fops */
gfs3_compound_req req;
/* last length till which iovec for compound
* writes was processed */
int write_length;
struct iovec rsp_vector[MAX_IOVEC];
int rsp_count;
struct iobuf *rsp_iobuf;
struct iobref *rsp_iobref;
compound_args_t *args;
};
extern struct rpcsvc_program gluster_handshake_prog;
extern struct rpcsvc_program glusterfs3_3_fop_prog;
typedef struct _server_ctx {
gf_lock_t fdtable_lock;
fdtable_t *fdtable;
struct _gf_timer *grace_timer;
uint32_t lk_version;
} server_ctx_t;
int
server_submit_reply (call_frame_t *frame, rpcsvc_request_t *req, void *arg,
struct iovec *payload, int payloadcount,
struct iobref *iobref, xdrproc_t xdrproc);
int gf_server_check_setxattr_cmd (call_frame_t *frame, dict_t *dict);
int gf_server_check_getxattr_cmd (call_frame_t *frame, const char *name);
void
forget_inode_if_no_dentry (inode_t *inode);
int
unserialize_req_locklist (gfs3_setactivelk_req *req,
lock_migration_info_t *lmi);
int
serialize_rsp_dirent (gf_dirent_t *entries, gfs3_readdir_rsp *rsp);
int
serialize_rsp_direntp (gf_dirent_t *entries, gfs3_readdirp_rsp *rsp);
server_ctx_t*
server_ctx_get (client_t *client, xlator_t *xlator);
#endif /* !_SERVER_H */
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