Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 1 | /* |
| 2 | * linux/fs/nfs/nfs4_fs.h |
| 3 | * |
| 4 | * Copyright (C) 2005 Trond Myklebust |
| 5 | * |
| 6 | * NFSv4-specific filesystem definitions and declarations |
| 7 | */ |
| 8 | |
| 9 | #ifndef __LINUX_FS_NFS_NFS4_FS_H |
| 10 | #define __LINUX_FS_NFS_NFS4_FS_H |
| 11 | |
Anna Schumaker | 694e096 | 2013-11-13 12:29:08 -0500 | [diff] [blame] | 12 | #if defined(CONFIG_NFS_V4_2) |
| 13 | #define NFS4_MAX_MINOR_VERSION 2 |
| 14 | #elif defined(CONFIG_NFS_V4_1) |
| 15 | #define NFS4_MAX_MINOR_VERSION 1 |
| 16 | #else |
| 17 | #define NFS4_MAX_MINOR_VERSION 0 |
| 18 | #endif |
| 19 | |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 20 | #if IS_ENABLED(CONFIG_NFS_V4) |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 21 | |
Trond Myklebust | 3302127 | 2012-11-26 13:13:29 -0500 | [diff] [blame] | 22 | #define NFS4_MAX_LOOP_ON_RECOVER (10) |
| 23 | |
Trond Myklebust | c137afa | 2013-02-07 14:41:11 -0500 | [diff] [blame] | 24 | #include <linux/seqlock.h> |
| 25 | |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 26 | struct idmap; |
| 27 | |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 28 | enum nfs4_client_state { |
Trond Myklebust | e005e80 | 2008-12-23 15:21:48 -0500 | [diff] [blame] | 29 | NFS4CLNT_MANAGER_RUNNING = 0, |
Trond Myklebust | e598d84 | 2008-12-23 15:21:42 -0500 | [diff] [blame] | 30 | NFS4CLNT_CHECK_LEASE, |
Trond Myklebust | 58d9714 | 2006-01-03 09:55:24 +0100 | [diff] [blame] | 31 | NFS4CLNT_LEASE_EXPIRED, |
Trond Myklebust | b79a4a1 | 2008-12-23 15:21:41 -0500 | [diff] [blame] | 32 | NFS4CLNT_RECLAIM_REBOOT, |
| 33 | NFS4CLNT_RECLAIM_NOGRACE, |
Trond Myklebust | 707fb4b | 2008-12-23 15:21:47 -0500 | [diff] [blame] | 34 | NFS4CLNT_DELEGRETURN, |
Andy Adamson | 6df0818 | 2009-12-04 15:55:05 -0500 | [diff] [blame] | 35 | NFS4CLNT_SESSION_RESET, |
Trond Myklebust | fd954ae | 2011-04-24 14:28:18 -0400 | [diff] [blame] | 36 | NFS4CLNT_LEASE_CONFIRM, |
Weston Andros Adamson | 78fe0f4 | 2011-05-31 19:05:47 -0400 | [diff] [blame] | 37 | NFS4CLNT_SERVER_SCOPE_MISMATCH, |
Chuck Lever | 2c820d9 | 2012-05-21 22:45:33 -0400 | [diff] [blame] | 38 | NFS4CLNT_PURGE_STATE, |
Weston Andros Adamson | a9e6444 | 2012-05-24 12:26:37 -0400 | [diff] [blame] | 39 | NFS4CLNT_BIND_CONN_TO_SESSION, |
Chuck Lever | c9fdeb2 | 2013-10-17 14:13:02 -0400 | [diff] [blame] | 40 | NFS4CLNT_MOVED, |
Chuck Lever | b7f7a66 | 2013-10-17 14:13:35 -0400 | [diff] [blame] | 41 | NFS4CLNT_LEASE_MOVED, |
Trond Myklebust | 45870d6 | 2016-09-22 13:38:59 -0400 | [diff] [blame] | 42 | NFS4CLNT_DELEGATION_EXPIRED, |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 43 | }; |
| 44 | |
Trond Myklebust | 2f60ea6 | 2011-08-24 15:07:37 -0400 | [diff] [blame] | 45 | #define NFS4_RENEW_TIMEOUT 0x01 |
| 46 | #define NFS4_RENEW_DELEGATION_CB 0x02 |
| 47 | |
Trond Myklebust | 63f5f79 | 2015-01-23 19:19:25 -0500 | [diff] [blame] | 48 | struct nfs_seqid_counter; |
Trond Myklebust | 97dc135 | 2010-06-16 09:52:26 -0400 | [diff] [blame] | 49 | struct nfs4_minor_version_ops { |
| 50 | u32 minor_version; |
Trond Myklebust | 39c6daa | 2013-03-15 16:11:57 -0400 | [diff] [blame] | 51 | unsigned init_caps; |
Trond Myklebust | 97dc135 | 2010-06-16 09:52:26 -0400 | [diff] [blame] | 52 | |
Chuck Lever | abf79bb | 2013-08-09 12:49:11 -0400 | [diff] [blame] | 53 | int (*init_client)(struct nfs_client *); |
| 54 | void (*shutdown_client)(struct nfs_client *); |
Trond Myklebust | 36281ca | 2012-03-04 18:13:56 -0500 | [diff] [blame] | 55 | bool (*match_stateid)(const nfs4_stateid *, |
Trond Myklebust | e047a10 | 2010-06-16 09:52:27 -0400 | [diff] [blame] | 56 | const nfs4_stateid *); |
Bryan Schumaker | fca78d6 | 2011-06-02 14:59:07 -0400 | [diff] [blame] | 57 | int (*find_root_sec)(struct nfs_server *, struct nfs_fh *, |
| 58 | struct nfs_fsinfo *); |
Jeff Layton | f1cdae8 | 2014-05-01 06:28:47 -0400 | [diff] [blame] | 59 | void (*free_lock_state)(struct nfs_server *, |
Trond Myklebust | c8b2d0b | 2013-05-03 16:22:55 -0400 | [diff] [blame] | 60 | struct nfs4_lock_state *); |
Trond Myklebust | 45870d6 | 2016-09-22 13:38:59 -0400 | [diff] [blame] | 61 | int (*test_and_free_expired)(struct nfs_server *, |
| 62 | nfs4_stateid *, struct rpc_cred *); |
Trond Myklebust | 63f5f79 | 2015-01-23 19:19:25 -0500 | [diff] [blame] | 63 | struct nfs_seqid * |
| 64 | (*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); |
Andy Adamson | 04fa2c6 | 2016-09-09 09:22:29 -0400 | [diff] [blame] | 65 | int (*session_trunk)(struct rpc_clnt *, struct rpc_xprt *, void *); |
Chuck Lever | 9915ea7 | 2013-08-09 12:48:27 -0400 | [diff] [blame] | 66 | const struct rpc_call_ops *call_sync_ops; |
Trond Myklebust | c48f4f3 | 2010-06-16 09:52:27 -0400 | [diff] [blame] | 67 | const struct nfs4_state_recovery_ops *reboot_recovery_ops; |
| 68 | const struct nfs4_state_recovery_ops *nograce_recovery_ops; |
| 69 | const struct nfs4_state_maintenance_ops *state_renewal_ops; |
Chuck Lever | ec011fe | 2013-10-17 14:12:39 -0400 | [diff] [blame] | 70 | const struct nfs4_mig_recovery_ops *mig_recovery_ops; |
Trond Myklebust | 97dc135 | 2010-06-16 09:52:26 -0400 | [diff] [blame] | 71 | }; |
| 72 | |
Trond Myklebust | cee54fc | 2005-10-18 14:20:12 -0700 | [diff] [blame] | 73 | #define NFS_SEQID_CONFIRMED 1 |
| 74 | struct nfs_seqid_counter { |
Trond Myklebust | 95b72eb | 2012-04-20 19:24:51 -0400 | [diff] [blame] | 75 | ktime_t create_time; |
Trond Myklebust | 48c22eb | 2012-01-17 22:04:25 -0500 | [diff] [blame] | 76 | int owner_id; |
Trond Myklebust | cee54fc | 2005-10-18 14:20:12 -0700 | [diff] [blame] | 77 | int flags; |
| 78 | u32 counter; |
Trond Myklebust | 7ba127a | 2012-01-17 22:04:25 -0500 | [diff] [blame] | 79 | spinlock_t lock; /* Protects the list */ |
| 80 | struct list_head list; /* Defines sequence of RPC calls */ |
| 81 | struct rpc_wait_queue wait; /* RPC call delay queue */ |
Trond Myklebust | cee54fc | 2005-10-18 14:20:12 -0700 | [diff] [blame] | 82 | }; |
| 83 | |
| 84 | struct nfs_seqid { |
Trond Myklebust | cee54fc | 2005-10-18 14:20:12 -0700 | [diff] [blame] | 85 | struct nfs_seqid_counter *sequence; |
Trond Myklebust | 4e51336 | 2005-10-20 14:22:41 -0700 | [diff] [blame] | 86 | struct list_head list; |
Trond Myklebust | 4601df2 | 2012-01-20 18:47:05 -0500 | [diff] [blame] | 87 | struct rpc_task *task; |
Trond Myklebust | cee54fc | 2005-10-18 14:20:12 -0700 | [diff] [blame] | 88 | }; |
| 89 | |
| 90 | static inline void nfs_confirm_seqid(struct nfs_seqid_counter *seqid, int status) |
| 91 | { |
| 92 | if (seqid_mutating_err(-status)) |
| 93 | seqid->flags |= NFS_SEQID_CONFIRMED; |
| 94 | } |
| 95 | |
| 96 | /* |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 97 | * NFS4 state_owners and lock_owners are simply labels for ordered |
| 98 | * sequences of RPC calls. Their sole purpose is to provide once-only |
| 99 | * semantics by allowing the server to identify replayed requests. |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 100 | */ |
| 101 | struct nfs4_state_owner { |
Trond Myklebust | 6f2e64d | 2007-07-06 10:53:21 -0400 | [diff] [blame] | 102 | struct nfs_server *so_server; |
Chuck Lever | 0aaaf5c | 2011-12-06 16:13:48 -0500 | [diff] [blame] | 103 | struct list_head so_lru; |
| 104 | unsigned long so_expires; |
Chuck Lever | 24d292b | 2010-12-24 01:32:43 +0000 | [diff] [blame] | 105 | struct rb_node so_server_node; |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 106 | |
| 107 | struct rpc_cred *so_cred; /* Associated cred */ |
Trond Myklebust | 9f958ab | 2007-07-02 13:58:33 -0400 | [diff] [blame] | 108 | |
| 109 | spinlock_t so_lock; |
| 110 | atomic_t so_count; |
Trond Myklebust | 7eff03a | 2008-12-23 15:21:43 -0500 | [diff] [blame] | 111 | unsigned long so_flags; |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 112 | struct list_head so_states; |
Trond Myklebust | cee54fc | 2005-10-18 14:20:12 -0700 | [diff] [blame] | 113 | struct nfs_seqid_counter so_seqid; |
Trond Myklebust | c137afa | 2013-02-07 14:41:11 -0500 | [diff] [blame] | 114 | seqcount_t so_reclaim_seqcount; |
Trond Myklebust | 65b62a2 | 2013-02-07 10:54:07 -0500 | [diff] [blame] | 115 | struct mutex so_delegreturn_mutex; |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 116 | }; |
| 117 | |
Trond Myklebust | 7eff03a | 2008-12-23 15:21:43 -0500 | [diff] [blame] | 118 | enum { |
| 119 | NFS_OWNER_RECLAIM_REBOOT, |
| 120 | NFS_OWNER_RECLAIM_NOGRACE |
| 121 | }; |
| 122 | |
Alexandros Batsakis | afe6c27 | 2009-12-09 01:50:14 -0800 | [diff] [blame] | 123 | #define NFS_LOCK_NEW 0 |
| 124 | #define NFS_LOCK_RECLAIM 1 |
| 125 | #define NFS_LOCK_EXPIRED 2 |
| 126 | |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 127 | /* |
| 128 | * struct nfs4_state maintains the client-side state for a given |
| 129 | * (state_owner,inode) tuple (OPEN) or state_owner (LOCK). |
| 130 | * |
| 131 | * OPEN: |
| 132 | * In order to know when to OPEN_DOWNGRADE or CLOSE the state on the server, |
| 133 | * we need to know how many files are open for reading or writing on a |
| 134 | * given inode. This information too is stored here. |
| 135 | * |
| 136 | * LOCK: one nfs4_state (LOCK) to hold the lock stateid nfs4_state(OPEN) |
| 137 | */ |
| 138 | |
| 139 | struct nfs4_lock_state { |
Jeff Layton | 0c0e0d3 | 2014-09-08 08:26:01 -0400 | [diff] [blame] | 140 | struct list_head ls_locks; /* Other lock stateids */ |
| 141 | struct nfs4_state * ls_state; /* Pointer to open state */ |
Trond Myklebust | 795a88c | 2012-09-10 13:26:49 -0400 | [diff] [blame] | 142 | #define NFS_LOCK_INITIALIZED 0 |
NeilBrown | ef1820f | 2013-09-04 17:04:49 +1000 | [diff] [blame] | 143 | #define NFS_LOCK_LOST 1 |
Jeff Layton | 0c0e0d3 | 2014-09-08 08:26:01 -0400 | [diff] [blame] | 144 | unsigned long ls_flags; |
Trond Myklebust | cee54fc | 2005-10-18 14:20:12 -0700 | [diff] [blame] | 145 | struct nfs_seqid_counter ls_seqid; |
Jeff Layton | 0c0e0d3 | 2014-09-08 08:26:01 -0400 | [diff] [blame] | 146 | nfs4_stateid ls_stateid; |
| 147 | atomic_t ls_count; |
| 148 | fl_owner_t ls_owner; |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 149 | }; |
| 150 | |
| 151 | /* bits for nfs4_state->flags */ |
| 152 | enum { |
| 153 | LK_STATE_IN_USE, |
Trond Myklebust | 003707c | 2007-07-05 18:07:55 -0400 | [diff] [blame] | 154 | NFS_DELEGATED_STATE, /* Current stateid is delegation */ |
Trond Myklebust | 92b40e9 | 2013-04-20 01:25:45 -0400 | [diff] [blame] | 155 | NFS_OPEN_STATE, /* OPEN stateid is set */ |
Trond Myklebust | 003707c | 2007-07-05 18:07:55 -0400 | [diff] [blame] | 156 | NFS_O_RDONLY_STATE, /* OPEN stateid has read-only state */ |
| 157 | NFS_O_WRONLY_STATE, /* OPEN stateid has write-only state */ |
| 158 | NFS_O_RDWR_STATE, /* OPEN stateid has read/write state */ |
Trond Myklebust | b79a4a1 | 2008-12-23 15:21:41 -0500 | [diff] [blame] | 159 | NFS_STATE_RECLAIM_REBOOT, /* OPEN stateid server rebooted */ |
| 160 | NFS_STATE_RECLAIM_NOGRACE, /* OPEN stateid needs to recover state */ |
Trond Myklebust | 8e469eb | 2010-01-26 15:42:30 -0500 | [diff] [blame] | 161 | NFS_STATE_POSIX_LOCKS, /* Posix locks are supported */ |
Trond Myklebust | 5d42230 | 2013-03-14 16:57:48 -0400 | [diff] [blame] | 162 | NFS_STATE_RECOVERY_FAILED, /* OPEN stateid state recovery failed */ |
Jeff Layton | a8ce377 | 2016-09-17 18:17:35 -0400 | [diff] [blame] | 163 | NFS_STATE_MAY_NOTIFY_LOCK, /* server may CB_NOTIFY_LOCK */ |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 164 | }; |
| 165 | |
| 166 | struct nfs4_state { |
| 167 | struct list_head open_states; /* List of states for the same state_owner */ |
| 168 | struct list_head inode_states; /* List of states for the same inode */ |
| 169 | struct list_head lock_states; /* List of subservient lock stateids */ |
| 170 | |
| 171 | struct nfs4_state_owner *owner; /* Pointer to the open owner */ |
| 172 | struct inode *inode; /* Pointer to the inode */ |
| 173 | |
| 174 | unsigned long flags; /* Do we hold any locks? */ |
Trond Myklebust | 8d0a8a9 | 2005-06-22 17:16:32 +0000 | [diff] [blame] | 175 | spinlock_t state_lock; /* Protects the lock_states list */ |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 176 | |
Trond Myklebust | 8bda4e4 | 2007-07-09 10:45:42 -0400 | [diff] [blame] | 177 | seqlock_t seqlock; /* Protects the stateid/open_stateid */ |
Trond Myklebust | 003707c | 2007-07-05 18:07:55 -0400 | [diff] [blame] | 178 | nfs4_stateid stateid; /* Current stateid: may be delegation */ |
| 179 | nfs4_stateid open_stateid; /* OPEN stateid */ |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 180 | |
Trond Myklebust | 8bda4e4 | 2007-07-09 10:45:42 -0400 | [diff] [blame] | 181 | /* The following 3 fields are protected by owner->so_lock */ |
Trond Myklebust | 003707c | 2007-07-05 18:07:55 -0400 | [diff] [blame] | 182 | unsigned int n_rdonly; /* Number of read-only references */ |
| 183 | unsigned int n_wronly; /* Number of write-only references */ |
| 184 | unsigned int n_rdwr; /* Number of read/write references */ |
Trond Myklebust | dc0b027 | 2008-12-23 15:21:56 -0500 | [diff] [blame] | 185 | fmode_t state; /* State on the server (R,W, or RW) */ |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 186 | atomic_t count; |
| 187 | }; |
| 188 | |
| 189 | |
| 190 | struct nfs4_exception { |
Trond Myklebust | 9e33bed | 2008-12-23 15:21:46 -0500 | [diff] [blame] | 191 | struct nfs4_state *state; |
Trond Myklebust | 3114ea7 | 2012-03-07 16:39:06 -0500 | [diff] [blame] | 192 | struct inode *inode; |
Trond Myklebust | 8487c47 | 2016-06-26 08:44:35 -0400 | [diff] [blame] | 193 | nfs4_stateid *stateid; |
Trond Myklebust | b3c2aa0 | 2015-09-20 14:32:45 -0400 | [diff] [blame] | 194 | long timeout; |
| 195 | unsigned char delay : 1, |
| 196 | recovering : 1, |
| 197 | retry : 1; |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 198 | }; |
| 199 | |
| 200 | struct nfs4_state_recovery_ops { |
Trond Myklebust | 7eff03a | 2008-12-23 15:21:43 -0500 | [diff] [blame] | 201 | int owner_flag_bit; |
Trond Myklebust | b79a4a1 | 2008-12-23 15:21:41 -0500 | [diff] [blame] | 202 | int state_flag_bit; |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 203 | int (*recover_open)(struct nfs4_state_owner *, struct nfs4_state *); |
| 204 | int (*recover_lock)(struct nfs4_state *, struct file_lock *); |
Andy Adamson | 591d71c | 2009-04-01 09:22:47 -0400 | [diff] [blame] | 205 | int (*establish_clid)(struct nfs_client *, struct rpc_cred *); |
Trond Myklebust | 965e9c2 | 2013-05-20 11:05:17 -0400 | [diff] [blame] | 206 | int (*reclaim_complete)(struct nfs_client *, struct rpc_cred *); |
Chuck Lever | 05f4c35 | 2012-09-14 17:24:32 -0400 | [diff] [blame] | 207 | int (*detect_trunking)(struct nfs_client *, struct nfs_client **, |
| 208 | struct rpc_cred *); |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 209 | }; |
| 210 | |
Andy Adamson | 04fa2c6 | 2016-09-09 09:22:29 -0400 | [diff] [blame] | 211 | struct nfs4_add_xprt_data { |
| 212 | struct nfs_client *clp; |
| 213 | struct rpc_cred *cred; |
| 214 | }; |
| 215 | |
Benny Halevy | 29fba38 | 2009-04-01 09:22:44 -0400 | [diff] [blame] | 216 | struct nfs4_state_maintenance_ops { |
Trond Myklebust | 2f60ea6 | 2011-08-24 15:07:37 -0400 | [diff] [blame] | 217 | int (*sched_state_renewal)(struct nfs_client *, struct rpc_cred *, unsigned); |
Andy Adamson | a7b7210 | 2009-04-01 09:22:46 -0400 | [diff] [blame] | 218 | struct rpc_cred * (*get_state_renewal_cred_locked)(struct nfs_client *); |
Benny Halevy | 8e69514f | 2009-04-01 09:22:45 -0400 | [diff] [blame] | 219 | int (*renew_lease)(struct nfs_client *, struct rpc_cred *); |
Benny Halevy | 29fba38 | 2009-04-01 09:22:44 -0400 | [diff] [blame] | 220 | }; |
| 221 | |
Chuck Lever | ec011fe | 2013-10-17 14:12:39 -0400 | [diff] [blame] | 222 | struct nfs4_mig_recovery_ops { |
Chuck Lever | b03d735 | 2013-10-17 14:12:50 -0400 | [diff] [blame] | 223 | int (*get_locations)(struct inode *, struct nfs4_fs_locations *, |
| 224 | struct page *, struct rpc_cred *); |
Chuck Lever | 44c9993 | 2013-10-17 14:13:30 -0400 | [diff] [blame] | 225 | int (*fsid_present)(struct inode *, struct rpc_cred *); |
Chuck Lever | ec011fe | 2013-10-17 14:12:39 -0400 | [diff] [blame] | 226 | }; |
| 227 | |
Al Viro | f786aa9 | 2009-02-20 05:51:22 +0000 | [diff] [blame] | 228 | extern const struct dentry_operations nfs4_dentry_operations; |
Bryan Schumaker | 73a7970 | 2012-07-16 16:39:12 -0400 | [diff] [blame] | 229 | |
| 230 | /* dir.c */ |
| 231 | int nfs_atomic_open(struct inode *, struct dentry *, struct file *, |
| 232 | unsigned, umode_t, int *); |
J. Bruce Fields | 6b3b549 | 2005-06-22 17:16:22 +0000 | [diff] [blame] | 233 | |
bjschuma@gmail.com | 1ae811e | 2012-08-08 13:57:06 -0400 | [diff] [blame] | 234 | /* super.c */ |
| 235 | extern struct file_system_type nfs4_fs_type; |
| 236 | |
Bryan Schumaker | 72de53e | 2012-04-27 13:27:40 -0400 | [diff] [blame] | 237 | /* nfs4namespace.c */ |
Al Viro | beffb8f | 2016-07-20 16:34:42 -0400 | [diff] [blame] | 238 | struct rpc_clnt *nfs4_negotiate_security(struct rpc_clnt *, struct inode *, |
| 239 | const struct qstr *); |
Bryan Schumaker | 281cad4 | 2012-04-27 13:27:45 -0400 | [diff] [blame] | 240 | struct vfsmount *nfs4_submount(struct nfs_server *, struct dentry *, |
| 241 | struct nfs_fh *, struct nfs_fattr *); |
Chuck Lever | 800c06a | 2013-10-17 14:12:34 -0400 | [diff] [blame] | 242 | int nfs4_replace_transport(struct nfs_server *server, |
| 243 | const struct nfs4_fs_locations *locations); |
Bryan Schumaker | 72de53e | 2012-04-27 13:27:40 -0400 | [diff] [blame] | 244 | |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 245 | /* nfs4proc.c */ |
Anna Schumaker | f4ac167 | 2014-11-25 13:18:15 -0500 | [diff] [blame] | 246 | extern int nfs4_handle_exception(struct nfs_server *, int, struct nfs4_exception *); |
Anna Schumaker | 1c6dcbe | 2014-09-26 13:58:48 -0400 | [diff] [blame] | 247 | extern int nfs4_call_sync(struct rpc_clnt *, struct nfs_server *, |
| 248 | struct rpc_message *, struct nfs4_sequence_args *, |
| 249 | struct nfs4_sequence_res *, int); |
Trond Myklebust | be3a5d2 | 2015-06-23 19:51:55 +0800 | [diff] [blame] | 250 | extern void nfs4_init_sequence(struct nfs4_sequence_args *, struct nfs4_sequence_res *, int); |
Trond Myklebust | bb8b27e | 2010-04-16 16:43:06 -0400 | [diff] [blame] | 251 | extern int nfs4_proc_setclientid(struct nfs_client *, u32, unsigned short, struct rpc_cred *, struct nfs4_setclientid_res *); |
| 252 | extern int nfs4_proc_setclientid_confirm(struct nfs_client *, struct nfs4_setclientid_res *arg, struct rpc_cred *); |
Trond Myklebust | 5e6b199 | 2013-09-07 12:58:57 -0400 | [diff] [blame] | 253 | extern int nfs4_proc_get_rootfh(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *, bool); |
Trond Myklebust | 2cf047c | 2012-05-25 17:57:41 -0400 | [diff] [blame] | 254 | extern int nfs4_proc_bind_conn_to_session(struct nfs_client *, struct rpc_cred *cred); |
Andy Adamson | 4d643d1 | 2009-12-04 15:52:24 -0500 | [diff] [blame] | 255 | extern int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred); |
Trond Myklebust | 6624553 | 2012-05-25 17:18:09 -0400 | [diff] [blame] | 256 | extern int nfs4_destroy_clientid(struct nfs_client *clp); |
Andy Adamson | 591d71c | 2009-04-01 09:22:47 -0400 | [diff] [blame] | 257 | extern int nfs4_init_clientid(struct nfs_client *, struct rpc_cred *); |
Andy Adamson | 4d643d1 | 2009-12-04 15:52:24 -0500 | [diff] [blame] | 258 | extern int nfs41_init_clientid(struct nfs_client *, struct rpc_cred *); |
Trond Myklebust | 1f7977c | 2012-09-20 20:31:51 -0400 | [diff] [blame] | 259 | extern int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait); |
Trond Myklebust | 55a9759 | 2006-06-09 09:34:19 -0400 | [diff] [blame] | 260 | extern int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle); |
Bryan Schumaker | f05d147 | 2012-04-27 13:27:41 -0400 | [diff] [blame] | 261 | extern int nfs4_proc_fs_locations(struct rpc_clnt *, struct inode *, const struct qstr *, |
| 262 | struct nfs4_fs_locations *, struct page *); |
Chuck Lever | b03d735 | 2013-10-17 14:12:50 -0400 | [diff] [blame] | 263 | extern int nfs4_proc_get_locations(struct inode *, struct nfs4_fs_locations *, |
| 264 | struct page *page, struct rpc_cred *); |
Chuck Lever | 44c9993 | 2013-10-17 14:13:30 -0400 | [diff] [blame] | 265 | extern int nfs4_proc_fsid_present(struct inode *, struct rpc_cred *); |
Al Viro | beffb8f | 2016-07-20 16:34:42 -0400 | [diff] [blame] | 266 | extern struct rpc_clnt *nfs4_proc_lookup_mountpoint(struct inode *, const struct qstr *, |
Bryan Schumaker | f05d147 | 2012-04-27 13:27:41 -0400 | [diff] [blame] | 267 | struct nfs_fh *, struct nfs_fattr *); |
Bryan Schumaker | 72de53e | 2012-04-27 13:27:40 -0400 | [diff] [blame] | 268 | extern int nfs4_proc_secinfo(struct inode *, const struct qstr *, struct nfs4_secinfo_flavors *); |
Aneesh Kumar K.V | 64c2ce8 | 2010-12-09 11:35:25 +0000 | [diff] [blame] | 269 | extern const struct xattr_handler *nfs4_xattr_handlers[]; |
Trond Myklebust | 5521abf | 2013-03-16 20:54:34 -0400 | [diff] [blame] | 270 | extern int nfs4_set_rw_stateid(nfs4_stateid *stateid, |
Trond Myklebust | 9b20614 | 2013-03-17 15:52:00 -0400 | [diff] [blame] | 271 | const struct nfs_open_context *ctx, |
| 272 | const struct nfs_lock_context *l_ctx, |
| 273 | fmode_t fmode); |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 274 | |
Andy Adamson | 557134a | 2009-04-01 09:21:53 -0400 | [diff] [blame] | 275 | #if defined(CONFIG_NFS_V4_1) |
Trond Myklebust | 035168a | 2010-06-16 09:52:26 -0400 | [diff] [blame] | 276 | static inline struct nfs4_session *nfs4_get_session(const struct nfs_server *server) |
| 277 | { |
| 278 | return server->nfs_client->cl_session; |
| 279 | } |
| 280 | |
Andy Adamson | dc70d7b | 2011-03-01 01:34:19 +0000 | [diff] [blame] | 281 | extern int nfs41_setup_sequence(struct nfs4_session *session, |
| 282 | struct nfs4_sequence_args *args, struct nfs4_sequence_res *res, |
Trond Myklebust | 9d12b21 | 2012-01-17 22:04:25 -0500 | [diff] [blame] | 283 | struct rpc_task *task); |
Andy Adamson | f9c96fc | 2014-01-29 11:34:38 -0500 | [diff] [blame] | 284 | extern int nfs41_sequence_done(struct rpc_task *, struct nfs4_sequence_res *); |
Trond Myklebust | 848f5bd | 2012-05-25 17:51:23 -0400 | [diff] [blame] | 285 | extern int nfs4_proc_create_session(struct nfs_client *, struct rpc_cred *); |
| 286 | extern int nfs4_proc_destroy_session(struct nfs4_session *, struct rpc_cred *); |
Ricardo Labiaga | 9430fb6 | 2009-12-06 12:23:46 -0500 | [diff] [blame] | 287 | extern int nfs4_proc_get_lease_time(struct nfs_client *clp, |
| 288 | struct nfs_fsinfo *fsinfo); |
Andy Adamson | 863a3c6 | 2011-03-23 13:27:54 +0000 | [diff] [blame] | 289 | extern int nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, |
Andy Adamson | ef31153 | 2011-03-12 02:58:10 -0500 | [diff] [blame] | 290 | bool sync); |
Andy Adamson | ba84db9 | 2016-09-09 09:22:21 -0400 | [diff] [blame] | 291 | extern int nfs4_detect_session_trunking(struct nfs_client *clp, |
| 292 | struct nfs41_exchange_id_res *res, struct rpc_xprt *xprt); |
Andy Adamson | 94de8b2 | 2011-03-01 01:34:12 +0000 | [diff] [blame] | 293 | |
| 294 | static inline bool |
| 295 | is_ds_only_client(struct nfs_client *clp) |
| 296 | { |
| 297 | return (clp->cl_exchange_flags & EXCHGID4_FLAG_MASK_PNFS) == |
| 298 | EXCHGID4_FLAG_USE_PNFS_DS; |
| 299 | } |
Andy Adamson | d83217c | 2011-03-01 01:34:17 +0000 | [diff] [blame] | 300 | |
| 301 | static inline bool |
| 302 | is_ds_client(struct nfs_client *clp) |
| 303 | { |
| 304 | return clp->cl_exchange_flags & EXCHGID4_FLAG_USE_PNFS_DS; |
| 305 | } |
Weston Andros Adamson | ab4c236 | 2013-08-13 16:37:33 -0400 | [diff] [blame] | 306 | |
Weston Andros Adamson | 8c21c62 | 2013-08-13 16:37:37 -0400 | [diff] [blame] | 307 | static inline bool |
| 308 | _nfs4_state_protect(struct nfs_client *clp, unsigned long sp4_mode, |
| 309 | struct rpc_clnt **clntp, struct rpc_message *msg) |
Weston Andros Adamson | ab4c236 | 2013-08-13 16:37:33 -0400 | [diff] [blame] | 310 | { |
| 311 | struct rpc_cred *newcred = NULL; |
| 312 | rpc_authflavor_t flavor; |
| 313 | |
| 314 | if (test_bit(sp4_mode, &clp->cl_sp4_flags)) { |
| 315 | spin_lock(&clp->cl_lock); |
| 316 | if (clp->cl_machine_cred != NULL) |
Weston Andros Adamson | ade33ff | 2013-09-10 18:44:32 -0400 | [diff] [blame] | 317 | /* don't call get_rpccred on the machine cred - |
| 318 | * a reference will be held for life of clp */ |
| 319 | newcred = clp->cl_machine_cred; |
Weston Andros Adamson | ab4c236 | 2013-08-13 16:37:33 -0400 | [diff] [blame] | 320 | spin_unlock(&clp->cl_lock); |
Weston Andros Adamson | ab4c236 | 2013-08-13 16:37:33 -0400 | [diff] [blame] | 321 | msg->rpc_cred = newcred; |
| 322 | |
| 323 | flavor = clp->cl_rpcclient->cl_auth->au_flavor; |
Weston Andros Adamson | 312cd95 | 2013-09-10 18:44:33 -0400 | [diff] [blame] | 324 | WARN_ON_ONCE(flavor != RPC_AUTH_GSS_KRB5I && |
| 325 | flavor != RPC_AUTH_GSS_KRB5P); |
Weston Andros Adamson | ab4c236 | 2013-08-13 16:37:33 -0400 | [diff] [blame] | 326 | *clntp = clp->cl_rpcclient; |
Weston Andros Adamson | 8c21c62 | 2013-08-13 16:37:37 -0400 | [diff] [blame] | 327 | |
| 328 | return true; |
Weston Andros Adamson | ab4c236 | 2013-08-13 16:37:33 -0400 | [diff] [blame] | 329 | } |
Weston Andros Adamson | 8c21c62 | 2013-08-13 16:37:37 -0400 | [diff] [blame] | 330 | return false; |
| 331 | } |
| 332 | |
| 333 | /* |
| 334 | * Function responsible for determining if an rpc_message should use the |
| 335 | * machine cred under SP4_MACH_CRED and if so switching the credential and |
| 336 | * authflavor (using the nfs_client's rpc_clnt which will be krb5i/p). |
| 337 | * Should be called before rpc_call_sync/rpc_call_async. |
| 338 | */ |
| 339 | static inline void |
| 340 | nfs4_state_protect(struct nfs_client *clp, unsigned long sp4_mode, |
| 341 | struct rpc_clnt **clntp, struct rpc_message *msg) |
| 342 | { |
| 343 | _nfs4_state_protect(clp, sp4_mode, clntp, msg); |
| 344 | } |
| 345 | |
| 346 | /* |
| 347 | * Special wrapper to nfs4_state_protect for write. |
| 348 | * If WRITE can use machine cred but COMMIT cannot, make sure all writes |
| 349 | * that use machine cred use NFS_FILE_SYNC. |
| 350 | */ |
| 351 | static inline void |
| 352 | nfs4_state_protect_write(struct nfs_client *clp, struct rpc_clnt **clntp, |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 353 | struct rpc_message *msg, struct nfs_pgio_header *hdr) |
Weston Andros Adamson | 8c21c62 | 2013-08-13 16:37:37 -0400 | [diff] [blame] | 354 | { |
| 355 | if (_nfs4_state_protect(clp, NFS_SP4_MACH_CRED_WRITE, clntp, msg) && |
| 356 | !test_bit(NFS_SP4_MACH_CRED_COMMIT, &clp->cl_sp4_flags)) |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 357 | hdr->args.stable = NFS_FILE_SYNC; |
Weston Andros Adamson | ab4c236 | 2013-08-13 16:37:33 -0400 | [diff] [blame] | 358 | } |
Andy Adamson | fbcd4ab | 2009-04-01 09:22:15 -0400 | [diff] [blame] | 359 | #else /* CONFIG_NFS_v4_1 */ |
Trond Myklebust | 035168a | 2010-06-16 09:52:26 -0400 | [diff] [blame] | 360 | static inline struct nfs4_session *nfs4_get_session(const struct nfs_server *server) |
| 361 | { |
| 362 | return NULL; |
| 363 | } |
| 364 | |
Andy Adamson | 94de8b2 | 2011-03-01 01:34:12 +0000 | [diff] [blame] | 365 | static inline bool |
| 366 | is_ds_only_client(struct nfs_client *clp) |
| 367 | { |
| 368 | return false; |
| 369 | } |
Andy Adamson | d83217c | 2011-03-01 01:34:17 +0000 | [diff] [blame] | 370 | |
| 371 | static inline bool |
| 372 | is_ds_client(struct nfs_client *clp) |
| 373 | { |
| 374 | return false; |
| 375 | } |
Weston Andros Adamson | ab4c236 | 2013-08-13 16:37:33 -0400 | [diff] [blame] | 376 | |
| 377 | static inline void |
| 378 | nfs4_state_protect(struct nfs_client *clp, unsigned long sp4_flags, |
| 379 | struct rpc_clnt **clntp, struct rpc_message *msg) |
| 380 | { |
| 381 | } |
Weston Andros Adamson | 8c21c62 | 2013-08-13 16:37:37 -0400 | [diff] [blame] | 382 | |
| 383 | static inline void |
| 384 | nfs4_state_protect_write(struct nfs_client *clp, struct rpc_clnt **clntp, |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 385 | struct rpc_message *msg, struct nfs_pgio_header *hdr) |
Weston Andros Adamson | 8c21c62 | 2013-08-13 16:37:37 -0400 | [diff] [blame] | 386 | { |
| 387 | } |
Andy Adamson | 557134a | 2009-04-01 09:21:53 -0400 | [diff] [blame] | 388 | #endif /* CONFIG_NFS_V4_1 */ |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 389 | |
Trond Myklebust | 97dc135 | 2010-06-16 09:52:26 -0400 | [diff] [blame] | 390 | extern const struct nfs4_minor_version_ops *nfs_v4_minor_ops[]; |
Benny Halevy | 29fba38 | 2009-04-01 09:22:44 -0400 | [diff] [blame] | 391 | |
Trond Myklebust | 1549210f | 2012-06-05 09:16:47 -0400 | [diff] [blame] | 392 | extern const u32 nfs4_fattr_bitmap[3]; |
David Quigley | a09df2c | 2013-05-22 12:50:41 -0400 | [diff] [blame] | 393 | extern const u32 nfs4_statfs_bitmap[3]; |
| 394 | extern const u32 nfs4_pathconf_bitmap[3]; |
Fred Isaman | dae100c | 2011-07-30 20:52:37 -0400 | [diff] [blame] | 395 | extern const u32 nfs4_fsinfo_bitmap[3]; |
David Quigley | a09df2c | 2013-05-22 12:50:41 -0400 | [diff] [blame] | 396 | extern const u32 nfs4_fs_locations_bitmap[3]; |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 397 | |
Chuck Lever | abf79bb | 2013-08-09 12:49:11 -0400 | [diff] [blame] | 398 | void nfs40_shutdown_client(struct nfs_client *); |
| 399 | void nfs41_shutdown_client(struct nfs_client *); |
| 400 | int nfs40_init_client(struct nfs_client *); |
| 401 | int nfs41_init_client(struct nfs_client *); |
Bryan Schumaker | cdb7ece | 2012-06-20 15:53:45 -0400 | [diff] [blame] | 402 | void nfs4_free_client(struct nfs_client *); |
| 403 | |
Bryan Schumaker | 6663ee7 | 2012-06-20 15:53:46 -0400 | [diff] [blame] | 404 | struct nfs_client *nfs4_alloc_client(const struct nfs_client_initdata *); |
| 405 | |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 406 | /* nfs4renewd.c */ |
David Howells | adfa6f9 | 2006-08-22 20:06:08 -0400 | [diff] [blame] | 407 | extern void nfs4_schedule_state_renewal(struct nfs_client *); |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 408 | extern void nfs4_renewd_prepare_shutdown(struct nfs_server *); |
David Howells | adfa6f9 | 2006-08-22 20:06:08 -0400 | [diff] [blame] | 409 | extern void nfs4_kill_renewd(struct nfs_client *); |
David Howells | 65f27f3 | 2006-11-22 14:55:48 +0000 | [diff] [blame] | 410 | extern void nfs4_renew_state(struct work_struct *); |
Trond Myklebust | fb10fb6 | 2016-08-05 19:13:08 -0400 | [diff] [blame] | 411 | extern void nfs4_set_lease_period(struct nfs_client *clp, |
| 412 | unsigned long lease, |
| 413 | unsigned long lastrenewed); |
| 414 | |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 415 | |
| 416 | /* nfs4state.c */ |
Chuck Lever | 73d8bde | 2013-07-24 12:28:37 -0400 | [diff] [blame] | 417 | struct rpc_cred *nfs4_get_clid_cred(struct nfs_client *clp); |
Trond Myklebust | fe20d7d | 2012-11-21 22:49:36 -0500 | [diff] [blame] | 418 | struct rpc_cred *nfs4_get_machine_cred_locked(struct nfs_client *clp); |
Trond Myklebust | 6dc9d57 | 2008-12-23 15:21:41 -0500 | [diff] [blame] | 419 | struct rpc_cred *nfs4_get_renew_cred_locked(struct nfs_client *clp); |
Chuck Lever | 05f4c35 | 2012-09-14 17:24:32 -0400 | [diff] [blame] | 420 | int nfs4_discover_server_trunking(struct nfs_client *clp, |
| 421 | struct nfs_client **); |
| 422 | int nfs40_discover_server_trunking(struct nfs_client *clp, |
| 423 | struct nfs_client **, struct rpc_cred *); |
Andy Adamson | a7b7210 | 2009-04-01 09:22:46 -0400 | [diff] [blame] | 424 | #if defined(CONFIG_NFS_V4_1) |
Chuck Lever | 05f4c35 | 2012-09-14 17:24:32 -0400 | [diff] [blame] | 425 | int nfs41_discover_server_trunking(struct nfs_client *clp, |
| 426 | struct nfs_client **, struct rpc_cred *); |
Trond Myklebust | 9f59479 | 2012-05-27 13:02:53 -0400 | [diff] [blame] | 427 | extern void nfs4_schedule_session_recovery(struct nfs4_session *, int); |
Anna Schumaker | 3f10a6a | 2015-07-13 14:01:31 -0400 | [diff] [blame] | 428 | extern void nfs41_notify_server(struct nfs_client *); |
Trond Myklebust | 0400a6b | 2011-03-09 16:00:53 -0500 | [diff] [blame] | 429 | #else |
Trond Myklebust | 9f59479 | 2012-05-27 13:02:53 -0400 | [diff] [blame] | 430 | static inline void nfs4_schedule_session_recovery(struct nfs4_session *session, int err) |
Trond Myklebust | 0400a6b | 2011-03-09 16:00:53 -0500 | [diff] [blame] | 431 | { |
| 432 | } |
Andy Adamson | a7b7210 | 2009-04-01 09:22:46 -0400 | [diff] [blame] | 433 | #endif /* CONFIG_NFS_V4_1 */ |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 434 | |
Trond Myklebust | d1e284d | 2012-01-17 22:04:24 -0500 | [diff] [blame] | 435 | extern struct nfs4_state_owner *nfs4_get_state_owner(struct nfs_server *, struct rpc_cred *, gfp_t); |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 436 | extern void nfs4_put_state_owner(struct nfs4_state_owner *); |
Chuck Lever | 0aaaf5c | 2011-12-06 16:13:48 -0500 | [diff] [blame] | 437 | extern void nfs4_purge_state_owners(struct nfs_server *); |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 438 | extern struct nfs4_state * nfs4_get_open_state(struct inode *, struct nfs4_state_owner *); |
| 439 | extern void nfs4_put_open_state(struct nfs4_state *); |
Al Viro | 643168c | 2011-06-22 18:20:23 -0400 | [diff] [blame] | 440 | extern void nfs4_close_state(struct nfs4_state *, fmode_t); |
| 441 | extern void nfs4_close_sync(struct nfs4_state *, fmode_t); |
Trond Myklebust | dc0b027 | 2008-12-23 15:21:56 -0500 | [diff] [blame] | 442 | extern void nfs4_state_set_mode_locked(struct nfs4_state *, fmode_t); |
Trond Myklebust | a1d0b5e | 2012-03-05 19:56:44 -0500 | [diff] [blame] | 443 | extern void nfs_inode_find_state_and_recover(struct inode *inode, |
| 444 | const nfs4_stateid *stateid); |
Trond Myklebust | 4f14c19 | 2014-02-12 19:15:06 -0500 | [diff] [blame] | 445 | extern int nfs4_state_mark_reclaim_nograce(struct nfs_client *, struct nfs4_state *); |
Trond Myklebust | 0400a6b | 2011-03-09 16:00:53 -0500 | [diff] [blame] | 446 | extern void nfs4_schedule_lease_recovery(struct nfs_client *); |
Trond Myklebust | 3302127 | 2012-11-26 13:13:29 -0500 | [diff] [blame] | 447 | extern int nfs4_wait_clnt_recover(struct nfs_client *clp); |
| 448 | extern int nfs4_client_recover_expired_lease(struct nfs_client *clp); |
Trond Myklebust | b0d3ded | 2008-12-23 15:21:50 -0500 | [diff] [blame] | 449 | extern void nfs4_schedule_state_manager(struct nfs_client *); |
Trond Myklebust | 042b60b | 2011-08-24 15:07:37 -0400 | [diff] [blame] | 450 | extern void nfs4_schedule_path_down_recovery(struct nfs_client *clp); |
Trond Myklebust | 5d42230 | 2013-03-14 16:57:48 -0400 | [diff] [blame] | 451 | extern int nfs4_schedule_stateid_recovery(const struct nfs_server *, struct nfs4_state *); |
Chuck Lever | c9fdeb2 | 2013-10-17 14:13:02 -0400 | [diff] [blame] | 452 | extern int nfs4_schedule_migration_recovery(const struct nfs_server *); |
Chuck Lever | b7f7a66 | 2013-10-17 14:13:35 -0400 | [diff] [blame] | 453 | extern void nfs4_schedule_lease_moved_recovery(struct nfs_client *); |
Trond Myklebust | 0a014a4 | 2016-09-22 13:38:51 -0400 | [diff] [blame] | 454 | extern void nfs41_handle_sequence_flag_errors(struct nfs_client *clp, u32 flags, bool); |
Weston Andros Adamson | 78fe0f4 | 2011-05-31 19:05:47 -0400 | [diff] [blame] | 455 | extern void nfs41_handle_server_scope(struct nfs_client *, |
Chuck Lever | 79d4e1f | 2012-05-21 22:44:31 -0400 | [diff] [blame] | 456 | struct nfs41_server_scope **); |
Trond Myklebust | faf5f49 | 2005-10-18 14:20:15 -0700 | [diff] [blame] | 457 | extern void nfs4_put_lock_state(struct nfs4_lock_state *lsp); |
Trond Myklebust | 8d0a8a9 | 2005-06-22 17:16:32 +0000 | [diff] [blame] | 458 | extern int nfs4_set_lock_state(struct nfs4_state *state, struct file_lock *fl); |
Trond Myklebust | abf4e13 | 2016-05-16 17:42:44 -0400 | [diff] [blame] | 459 | extern int nfs4_select_rw_stateid(struct nfs4_state *, fmode_t, |
NeilBrown | 1739347 | 2016-10-13 15:26:47 +1100 | [diff] [blame^] | 460 | const struct nfs_lock_context *, nfs4_stateid *, |
Trond Myklebust | abf4e13 | 2016-05-16 17:42:44 -0400 | [diff] [blame] | 461 | struct rpc_cred **); |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 462 | |
Trond Myklebust | 8535b2b | 2010-05-13 12:51:01 -0400 | [diff] [blame] | 463 | extern struct nfs_seqid *nfs_alloc_seqid(struct nfs_seqid_counter *counter, gfp_t gfp_mask); |
Trond Myklebust | cee54fc | 2005-10-18 14:20:12 -0700 | [diff] [blame] | 464 | extern int nfs_wait_on_sequence(struct nfs_seqid *seqid, struct rpc_task *task); |
| 465 | extern void nfs_increment_open_seqid(int status, struct nfs_seqid *seqid); |
| 466 | extern void nfs_increment_lock_seqid(int status, struct nfs_seqid *seqid); |
Trond Myklebust | 72211db | 2009-12-15 14:47:36 -0500 | [diff] [blame] | 467 | extern void nfs_release_seqid(struct nfs_seqid *seqid); |
Trond Myklebust | cee54fc | 2005-10-18 14:20:12 -0700 | [diff] [blame] | 468 | extern void nfs_free_seqid(struct nfs_seqid *seqid); |
Peng Tao | cb04ad2 | 2014-06-11 05:24:15 +0800 | [diff] [blame] | 469 | extern int nfs40_setup_sequence(struct nfs4_slot_table *tbl, |
| 470 | struct nfs4_sequence_args *args, |
| 471 | struct nfs4_sequence_res *res, |
| 472 | struct rpc_task *task); |
Peng Tao | 2c4b131 | 2014-06-11 05:24:16 +0800 | [diff] [blame] | 473 | extern int nfs4_sequence_done(struct rpc_task *task, |
| 474 | struct nfs4_sequence_res *res); |
Trond Myklebust | cee54fc | 2005-10-18 14:20:12 -0700 | [diff] [blame] | 475 | |
Trond Myklebust | 5ae67c4 | 2012-03-19 16:17:18 -0400 | [diff] [blame] | 476 | extern void nfs4_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp); |
Trond Myklebust | cf470c3 | 2012-03-07 13:49:12 -0500 | [diff] [blame] | 477 | |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 478 | extern const nfs4_stateid zero_stateid; |
| 479 | |
Bryan Schumaker | 129d197 | 2012-07-16 16:39:13 -0400 | [diff] [blame] | 480 | /* nfs4super.c */ |
Bryan Schumaker | fbdefd6 | 2012-07-16 16:39:20 -0400 | [diff] [blame] | 481 | struct nfs_mount_info; |
Bryan Schumaker | ab7017a | 2012-07-30 16:05:16 -0400 | [diff] [blame] | 482 | extern struct nfs_subversion nfs_v4; |
Bryan Schumaker | ff9099f2 | 2012-07-30 16:05:18 -0400 | [diff] [blame] | 483 | struct dentry *nfs4_try_mount(int, const char *, struct nfs_mount_info *, struct nfs_subversion *); |
Bryan Schumaker | fac1e8e | 2012-07-30 16:05:22 -0400 | [diff] [blame] | 484 | extern bool nfs4_disable_idmapping; |
| 485 | extern unsigned short max_session_slots; |
Trond Myklebust | 5405fc4 | 2016-08-29 20:03:52 -0400 | [diff] [blame] | 486 | extern unsigned short max_session_cb_slots; |
Bryan Schumaker | fac1e8e | 2012-07-30 16:05:22 -0400 | [diff] [blame] | 487 | extern unsigned short send_implementation_id; |
Trond Myklebust | f6de7a3 | 2013-09-04 10:08:54 -0400 | [diff] [blame] | 488 | extern bool recover_lost_locks; |
Bryan Schumaker | 89d77c8 | 2012-07-30 16:05:25 -0400 | [diff] [blame] | 489 | |
Chuck Lever | 6f2ea7f | 2012-09-14 17:24:41 -0400 | [diff] [blame] | 490 | #define NFS4_CLIENT_ID_UNIQ_LEN (64) |
| 491 | extern char nfs4_client_id_uniquifier[NFS4_CLIENT_ID_UNIQ_LEN]; |
| 492 | |
Bryan Schumaker | 466bfe7 | 2012-07-16 16:39:14 -0400 | [diff] [blame] | 493 | /* nfs4sysctl.c */ |
| 494 | #ifdef CONFIG_SYSCTL |
| 495 | int nfs4_register_sysctl(void); |
| 496 | void nfs4_unregister_sysctl(void); |
| 497 | #else |
| 498 | static inline int nfs4_register_sysctl(void) |
| 499 | { |
| 500 | return 0; |
| 501 | } |
| 502 | |
Randy Dunlap | 0add3e8 | 2012-07-27 11:49:26 -0700 | [diff] [blame] | 503 | static inline void nfs4_unregister_sysctl(void) |
Bryan Schumaker | 466bfe7 | 2012-07-16 16:39:14 -0400 | [diff] [blame] | 504 | { |
| 505 | } |
| 506 | #endif |
| 507 | |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 508 | /* nfs4xdr.c */ |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 509 | extern struct rpc_procinfo nfs4_procedures[]; |
| 510 | |
| 511 | struct nfs4_mount_data; |
| 512 | |
| 513 | /* callback_xdr.c */ |
| 514 | extern struct svc_version nfs4_callback_version1; |
Alexandros Batsakis | 07bccc2 | 2009-12-05 13:19:01 -0500 | [diff] [blame] | 515 | extern struct svc_version nfs4_callback_version4; |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 516 | |
Trond Myklebust | f597c53 | 2012-03-04 18:13:56 -0500 | [diff] [blame] | 517 | static inline void nfs4_stateid_copy(nfs4_stateid *dst, const nfs4_stateid *src) |
| 518 | { |
Trond Myklebust | 93b717f | 2016-05-16 17:42:43 -0400 | [diff] [blame] | 519 | memcpy(dst->data, src->data, sizeof(dst->data)); |
| 520 | dst->type = src->type; |
Trond Myklebust | f597c53 | 2012-03-04 18:13:56 -0500 | [diff] [blame] | 521 | } |
| 522 | |
| 523 | static inline bool nfs4_stateid_match(const nfs4_stateid *dst, const nfs4_stateid *src) |
| 524 | { |
Trond Myklebust | 93b717f | 2016-05-16 17:42:43 -0400 | [diff] [blame] | 525 | if (dst->type != src->type) |
| 526 | return false; |
| 527 | return memcmp(dst->data, src->data, sizeof(dst->data)) == 0; |
Trond Myklebust | f597c53 | 2012-03-04 18:13:56 -0500 | [diff] [blame] | 528 | } |
| 529 | |
Trond Myklebust | e999e80 | 2014-02-10 18:20:47 -0500 | [diff] [blame] | 530 | static inline bool nfs4_stateid_match_other(const nfs4_stateid *dst, const nfs4_stateid *src) |
| 531 | { |
| 532 | return memcmp(dst->other, src->other, NFS4_STATEID_OTHER_SIZE) == 0; |
| 533 | } |
| 534 | |
| 535 | static inline bool nfs4_stateid_is_newer(const nfs4_stateid *s1, const nfs4_stateid *s2) |
| 536 | { |
| 537 | return (s32)(be32_to_cpu(s1->seqid) - be32_to_cpu(s2->seqid)) > 0; |
| 538 | } |
| 539 | |
Trond Myklebust | 5d42230 | 2013-03-14 16:57:48 -0400 | [diff] [blame] | 540 | static inline bool nfs4_valid_open_stateid(const struct nfs4_state *state) |
| 541 | { |
| 542 | return test_bit(NFS_STATE_RECOVERY_FAILED, &state->flags) == 0; |
| 543 | } |
| 544 | |
Trond Myklebust | 3e7dfb1 | 2016-11-14 11:19:55 -0500 | [diff] [blame] | 545 | static inline bool nfs4_state_match_open_stateid_other(const struct nfs4_state *state, |
| 546 | const nfs4_stateid *stateid) |
| 547 | { |
| 548 | return test_bit(NFS_OPEN_STATE, &state->flags) && |
| 549 | nfs4_stateid_match_other(&state->open_stateid, stateid); |
| 550 | } |
| 551 | |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 552 | #else |
| 553 | |
Al Viro | 643168c | 2011-06-22 18:20:23 -0400 | [diff] [blame] | 554 | #define nfs4_close_state(a, b) do { } while (0) |
| 555 | #define nfs4_close_sync(a, b) do { } while (0) |
Weston Andros Adamson | 8c21c62 | 2013-08-13 16:37:37 -0400 | [diff] [blame] | 556 | #define nfs4_state_protect(a, b, c, d) do { } while (0) |
| 557 | #define nfs4_state_protect_write(a, b, c, d) do { } while (0) |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 558 | |
| 559 | #endif /* CONFIG_NFS_V4 */ |
| 560 | #endif /* __LINUX_FS_NFS_NFS4_FS.H */ |