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When we open a monitor session, we send an initial AUTH message listing the auth protocols we support, our entity name, and (possibly) a previously assigned global_id. The monitor chooses a protocol and responds with an initial message. Initially implement AUTH_NONE, a dummy protocol that provides no security, but works within the new framework. It generates 'authorizers' that are used when connecting to (mds, osd) services that simply state our entity name and global_id. This is a wire protocol change. Signed-off-by: Sage Weil <sage@newdream.net>
116 lines
2.8 KiB
C
116 lines
2.8 KiB
C
#ifndef _FS_CEPH_MON_CLIENT_H
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#define _FS_CEPH_MON_CLIENT_H
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#include <linux/completion.h>
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#include <linux/radix-tree.h>
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#include "messenger.h"
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#include "msgpool.h"
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struct ceph_client;
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struct ceph_mount_args;
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struct ceph_auth_client;
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/*
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* The monitor map enumerates the set of all monitors.
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*/
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struct ceph_monmap {
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struct ceph_fsid fsid;
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u32 epoch;
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u32 num_mon;
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struct ceph_entity_inst mon_inst[0];
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};
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struct ceph_mon_client;
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struct ceph_mon_statfs_request;
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/*
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* Generic mechanism for resending monitor requests.
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*/
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typedef void (*ceph_monc_request_func_t)(struct ceph_mon_client *monc,
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int newmon);
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/* a pending monitor request */
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struct ceph_mon_request {
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struct ceph_mon_client *monc;
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struct delayed_work delayed_work;
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unsigned long delay;
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ceph_monc_request_func_t do_request;
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};
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/*
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* statfs() is done a bit differently because we need to get data back
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* to the caller
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*/
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struct ceph_mon_statfs_request {
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u64 tid;
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int result;
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struct ceph_statfs *buf;
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struct completion completion;
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unsigned long last_attempt, delay; /* jiffies */
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struct ceph_msg *request; /* original request */
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};
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struct ceph_mon_client {
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struct ceph_client *client;
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struct ceph_monmap *monmap;
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struct mutex mutex;
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struct delayed_work delayed_work;
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struct ceph_auth_client *auth;
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struct ceph_msg *m_auth;
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bool hunting;
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int cur_mon; /* last monitor i contacted */
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unsigned long sub_sent, sub_renew_after;
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struct ceph_connection *con;
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bool have_fsid;
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/* msg pools */
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struct ceph_msgpool msgpool_subscribe_ack;
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struct ceph_msgpool msgpool_statfs_reply;
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struct ceph_msgpool msgpool_auth_reply;
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/* pending statfs requests */
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struct radix_tree_root statfs_request_tree;
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int num_statfs_requests;
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u64 last_tid;
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/* mds/osd map */
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int want_next_osdmap; /* 1 = want, 2 = want+asked */
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u32 have_osdmap, have_mdsmap;
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#ifdef CONFIG_DEBUG_FS
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struct dentry *debugfs_file;
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#endif
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};
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extern struct ceph_monmap *ceph_monmap_decode(void *p, void *end);
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extern int ceph_monmap_contains(struct ceph_monmap *m,
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struct ceph_entity_addr *addr);
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extern int ceph_monc_init(struct ceph_mon_client *monc, struct ceph_client *cl);
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extern void ceph_monc_stop(struct ceph_mon_client *monc);
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/*
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* The model here is to indicate that we need a new map of at least
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* epoch @want, and also call in when we receive a map. We will
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* periodically rerequest the map from the monitor cluster until we
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* get what we want.
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*/
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extern int ceph_monc_got_mdsmap(struct ceph_mon_client *monc, u32 have);
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extern int ceph_monc_got_osdmap(struct ceph_mon_client *monc, u32 have);
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extern void ceph_monc_request_next_osdmap(struct ceph_mon_client *monc);
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extern int ceph_monc_do_statfs(struct ceph_mon_client *monc,
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struct ceph_statfs *buf);
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extern int ceph_monc_open_session(struct ceph_mon_client *monc);
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#endif
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