1ec26815aSDavid Howells /* internal AFS stuff 21da177e4SLinus Torvalds * 308e0e7c8SDavid Howells * Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved. 41da177e4SLinus Torvalds * Written by David Howells (dhowells@redhat.com) 51da177e4SLinus Torvalds * 61da177e4SLinus Torvalds * This program is free software; you can redistribute it and/or 71da177e4SLinus Torvalds * modify it under the terms of the GNU General Public License 81da177e4SLinus Torvalds * as published by the Free Software Foundation; either version 91da177e4SLinus Torvalds * 2 of the License, or (at your option) any later version. 101da177e4SLinus Torvalds */ 111da177e4SLinus Torvalds 121da177e4SLinus Torvalds #include <linux/compiler.h> 131da177e4SLinus Torvalds #include <linux/kernel.h> 148a79790bSTina Ruchandani #include <linux/ktime.h> 151da177e4SLinus Torvalds #include <linux/fs.h> 161da177e4SLinus Torvalds #include <linux/pagemap.h> 1708e0e7c8SDavid Howells #include <linux/rxrpc.h> 1800d3b7a4SDavid Howells #include <linux/key.h> 19e8edc6e0SAlexey Dobriyan #include <linux/workqueue.h> 2000c541eaSAndrew Morton #include <linux/sched.h> 2180e50be4SChristoph Hellwig #include <linux/fscache.h> 22e1da0222SJens Axboe #include <linux/backing-dev.h> 23ff548773SDavid Howells #include <linux/uuid.h> 24f044c884SDavid Howells #include <net/net_namespace.h> 258324f0bcSDavid Howells #include <net/af_rxrpc.h> 2600c541eaSAndrew Morton 2708e0e7c8SDavid Howells #include "afs.h" 2808e0e7c8SDavid Howells #include "afs_vl.h" 2908e0e7c8SDavid Howells 3008e0e7c8SDavid Howells #define AFS_CELL_MAX_ADDRS 15 3108e0e7c8SDavid Howells 3231143d5dSDavid Howells struct pagevec; 3308e0e7c8SDavid Howells struct afs_call; 3408e0e7c8SDavid Howells 3500d3b7a4SDavid Howells struct afs_mount_params { 3600d3b7a4SDavid Howells bool rwpath; /* T if the parent should be considered R/W */ 3700d3b7a4SDavid Howells bool force; /* T to force cell type */ 38bec5eb61Swanglei bool autocell; /* T if set auto mount operation */ 394d673da1SDavid Howells bool dyn_root; /* T if dynamic root */ 4000d3b7a4SDavid Howells afs_voltype_t type; /* type of volume requested */ 4100d3b7a4SDavid Howells int volnamesz; /* size of volume name */ 4200d3b7a4SDavid Howells const char *volname; /* name of volume to mount */ 43f044c884SDavid Howells struct afs_net *net; /* Network namespace in effect */ 4400d3b7a4SDavid Howells struct afs_cell *cell; /* cell in which to find volume */ 4500d3b7a4SDavid Howells struct afs_volume *volume; /* volume record */ 4600d3b7a4SDavid Howells struct key *key; /* key to use for secure mounting */ 4700d3b7a4SDavid Howells }; 4800d3b7a4SDavid Howells 49c435ee34SDavid Howells struct afs_iget_data { 50c435ee34SDavid Howells struct afs_fid fid; 51c435ee34SDavid Howells struct afs_volume *volume; /* volume on which resides */ 52c435ee34SDavid Howells }; 53c435ee34SDavid Howells 548e8d7f13SDavid Howells enum afs_call_state { 5598bf40cdSDavid Howells AFS_CALL_CL_REQUESTING, /* Client: Request is being sent */ 5698bf40cdSDavid Howells AFS_CALL_CL_AWAIT_REPLY, /* Client: Awaiting reply */ 5798bf40cdSDavid Howells AFS_CALL_CL_PROC_REPLY, /* Client: rxrpc call complete; processing reply */ 5898bf40cdSDavid Howells AFS_CALL_SV_AWAIT_OP_ID, /* Server: Awaiting op ID */ 5998bf40cdSDavid Howells AFS_CALL_SV_AWAIT_REQUEST, /* Server: Awaiting request data */ 6098bf40cdSDavid Howells AFS_CALL_SV_REPLYING, /* Server: Replying */ 6198bf40cdSDavid Howells AFS_CALL_SV_AWAIT_ACK, /* Server: Awaiting final ACK */ 628e8d7f13SDavid Howells AFS_CALL_COMPLETE, /* Completed or failed */ 638e8d7f13SDavid Howells }; 64f044c884SDavid Howells 6508e0e7c8SDavid Howells /* 668b2a464cSDavid Howells * List of server addresses. 678b2a464cSDavid Howells */ 688b2a464cSDavid Howells struct afs_addr_list { 698b2a464cSDavid Howells struct rcu_head rcu; /* Must be first */ 708b2a464cSDavid Howells refcount_t usage; 71d2ddc776SDavid Howells u32 version; /* Version */ 728b2a464cSDavid Howells unsigned short nr_addrs; 738b2a464cSDavid Howells unsigned short index; /* Address currently in use */ 74d2ddc776SDavid Howells unsigned short nr_ipv4; /* Number of IPv4 addresses */ 75bf99a53cSDavid Howells unsigned long probed; /* Mask of servers that have been probed */ 76bf99a53cSDavid Howells unsigned long yfs; /* Mask of servers that are YFS */ 778b2a464cSDavid Howells struct sockaddr_rxrpc addrs[]; 788b2a464cSDavid Howells }; 798b2a464cSDavid Howells 808b2a464cSDavid Howells /* 8108e0e7c8SDavid Howells * a record of an in-progress RxRPC call 8208e0e7c8SDavid Howells */ 8308e0e7c8SDavid Howells struct afs_call { 8408e0e7c8SDavid Howells const struct afs_call_type *type; /* type of call */ 8508e0e7c8SDavid Howells wait_queue_head_t waitq; /* processes awaiting completion */ 86341f741fSDavid Howells struct work_struct async_work; /* async I/O processor */ 8708e0e7c8SDavid Howells struct work_struct work; /* actual work processor */ 8808e0e7c8SDavid Howells struct rxrpc_call *rxcall; /* RxRPC call handle */ 8908e0e7c8SDavid Howells struct key *key; /* security for this call */ 90f044c884SDavid Howells struct afs_net *net; /* The network namespace */ 91d0676a16SDavid Howells struct afs_server *cm_server; /* Server affected by incoming CM call */ 92d2ddc776SDavid Howells struct afs_cb_interest *cbi; /* Callback interest for server used */ 9308e0e7c8SDavid Howells void *request; /* request data (first part) */ 944343d008SDavid Howells struct address_space *mapping; /* Pages being written from */ 9508e0e7c8SDavid Howells void *buffer; /* reply receive buffer */ 9697e3043aSDavid Howells void *reply[4]; /* Where to put the reply */ 9731143d5dSDavid Howells pgoff_t first; /* first page in mapping to deal with */ 9831143d5dSDavid Howells pgoff_t last; /* last page in mapping to deal with */ 99d001648eSDavid Howells size_t offset; /* offset into received data store */ 100341f741fSDavid Howells atomic_t usage; 1018e8d7f13SDavid Howells enum afs_call_state state; 10298bf40cdSDavid Howells spinlock_t state_lock; 10308e0e7c8SDavid Howells int error; /* error code */ 104d001648eSDavid Howells u32 abort_code; /* Remote abort ID or 0 */ 10508e0e7c8SDavid Howells unsigned request_size; /* size of request data */ 10608e0e7c8SDavid Howells unsigned reply_max; /* maximum size of reply */ 10731143d5dSDavid Howells unsigned first_offset; /* offset into mapping[first] */ 108c435ee34SDavid Howells unsigned int cb_break; /* cb_break + cb_s_break before the call */ 109bcd89270SMarc Dionne union { 11031143d5dSDavid Howells unsigned last_to; /* amount of mapping[last] */ 111bcd89270SMarc Dionne unsigned count2; /* count used in unmarshalling */ 112bcd89270SMarc Dionne }; 11308e0e7c8SDavid Howells unsigned char unmarshall; /* unmarshalling phase */ 11408e0e7c8SDavid Howells bool incoming; /* T if incoming call */ 11531143d5dSDavid Howells bool send_pages; /* T if data from mapping should be sent */ 116d001648eSDavid Howells bool need_attention; /* T if RxRPC poked us */ 11756ff9c83SDavid Howells bool async; /* T if asynchronous */ 11833cd7f2bSDavid Howells bool ret_reply0; /* T if should return reply[0] on success */ 119a68f4a27SDavid Howells bool upgrade; /* T to request service upgrade */ 120bf99a53cSDavid Howells u16 service_id; /* Actual service ID (after upgrade) */ 121a25e21f0SDavid Howells unsigned int debug_id; /* Trace ID */ 12250a2c953SDavid Howells u32 operation_ID; /* operation ID for an incoming call */ 12308e0e7c8SDavid Howells u32 count; /* count for use in unmarshalling */ 12408e0e7c8SDavid Howells __be32 tmp; /* place to extract temporary data */ 12531143d5dSDavid Howells afs_dataversion_t store_version; /* updated version expected from store */ 12608e0e7c8SDavid Howells }; 12708e0e7c8SDavid Howells 12808e0e7c8SDavid Howells struct afs_call_type { 12900d3b7a4SDavid Howells const char *name; 130025db80cSDavid Howells unsigned int op; /* Really enum afs_fs_operation */ 13100d3b7a4SDavid Howells 13208e0e7c8SDavid Howells /* deliver request or reply data to an call 13308e0e7c8SDavid Howells * - returning an error will cause the call to be aborted 13408e0e7c8SDavid Howells */ 135d001648eSDavid Howells int (*deliver)(struct afs_call *call); 13608e0e7c8SDavid Howells 13708e0e7c8SDavid Howells /* clean up a call */ 13808e0e7c8SDavid Howells void (*destructor)(struct afs_call *call); 139341f741fSDavid Howells 140341f741fSDavid Howells /* Work function */ 141341f741fSDavid Howells void (*work)(struct work_struct *work); 14208e0e7c8SDavid Howells }; 14308e0e7c8SDavid Howells 14408e0e7c8SDavid Howells /* 1454343d008SDavid Howells * Key available for writeback on a file. 1464343d008SDavid Howells */ 1474343d008SDavid Howells struct afs_wb_key { 1484343d008SDavid Howells refcount_t usage; 1494343d008SDavid Howells struct key *key; 1504343d008SDavid Howells struct list_head vnode_link; /* Link in vnode->wb_keys */ 1514343d008SDavid Howells }; 1524343d008SDavid Howells 1534343d008SDavid Howells /* 154215804a9SDavid Howells * AFS open file information record. Pointed to by file->private_data. 155215804a9SDavid Howells */ 156215804a9SDavid Howells struct afs_file { 157215804a9SDavid Howells struct key *key; /* The key this file was opened with */ 1584343d008SDavid Howells struct afs_wb_key *wb; /* Writeback key record for this file */ 159215804a9SDavid Howells }; 160215804a9SDavid Howells 161215804a9SDavid Howells static inline struct key *afs_file_key(struct file *file) 162215804a9SDavid Howells { 163215804a9SDavid Howells struct afs_file *af = file->private_data; 164215804a9SDavid Howells 165215804a9SDavid Howells return af->key; 166215804a9SDavid Howells } 167215804a9SDavid Howells 168215804a9SDavid Howells /* 169196ee9cdSDavid Howells * Record of an outstanding read operation on a vnode. 170196ee9cdSDavid Howells */ 171196ee9cdSDavid Howells struct afs_read { 172196ee9cdSDavid Howells loff_t pos; /* Where to start reading */ 173e8e581a8SDavid Howells loff_t len; /* How much we're asking for */ 174196ee9cdSDavid Howells loff_t actual_len; /* How much we're actually getting */ 1756a0e3999SDavid Howells loff_t remain; /* Amount remaining */ 176196ee9cdSDavid Howells atomic_t usage; 177196ee9cdSDavid Howells unsigned int index; /* Which page we're reading into */ 178196ee9cdSDavid Howells unsigned int nr_pages; 179196ee9cdSDavid Howells void (*page_done)(struct afs_call *, struct afs_read *); 180196ee9cdSDavid Howells struct page *pages[]; 181196ee9cdSDavid Howells }; 182196ee9cdSDavid Howells 183196ee9cdSDavid Howells /* 18408e0e7c8SDavid Howells * AFS superblock private data 18508e0e7c8SDavid Howells * - there's one superblock per volume 18608e0e7c8SDavid Howells */ 18708e0e7c8SDavid Howells struct afs_super_info { 188f044c884SDavid Howells struct afs_net *net; /* Network namespace */ 18949566f6fSDavid Howells struct afs_cell *cell; /* The cell in which the volume resides */ 19008e0e7c8SDavid Howells struct afs_volume *volume; /* volume record */ 1914d673da1SDavid Howells bool dyn_root; /* True if dynamic root */ 19208e0e7c8SDavid Howells }; 19308e0e7c8SDavid Howells 19408e0e7c8SDavid Howells static inline struct afs_super_info *AFS_FS_S(struct super_block *sb) 19508e0e7c8SDavid Howells { 19608e0e7c8SDavid Howells return sb->s_fs_info; 19708e0e7c8SDavid Howells } 19808e0e7c8SDavid Howells 19908e0e7c8SDavid Howells extern struct file_system_type afs_fs_type; 20008e0e7c8SDavid Howells 20108e0e7c8SDavid Howells /* 202f044c884SDavid Howells * AFS network namespace record. 203f044c884SDavid Howells */ 204f044c884SDavid Howells struct afs_net { 205f044c884SDavid Howells struct afs_uuid uuid; 206f044c884SDavid Howells bool live; /* F if this namespace is being removed */ 207f044c884SDavid Howells 208f044c884SDavid Howells /* AF_RXRPC I/O stuff */ 209f044c884SDavid Howells struct socket *socket; 210f044c884SDavid Howells struct afs_call *spare_incoming_call; 211f044c884SDavid Howells struct work_struct charge_preallocation_work; 212f044c884SDavid Howells struct mutex socket_mutex; 213f044c884SDavid Howells atomic_t nr_outstanding_calls; 214f044c884SDavid Howells atomic_t nr_superblocks; 215f044c884SDavid Howells 216f044c884SDavid Howells /* Cell database */ 217989782dcSDavid Howells struct rb_root cells; 218f044c884SDavid Howells struct afs_cell *ws_cell; 219989782dcSDavid Howells struct work_struct cells_manager; 220989782dcSDavid Howells struct timer_list cells_timer; 221989782dcSDavid Howells atomic_t cells_outstanding; 222989782dcSDavid Howells seqlock_t cells_lock; 223f044c884SDavid Howells 224989782dcSDavid Howells spinlock_t proc_cells_lock; 225f044c884SDavid Howells struct list_head proc_cells; 226f044c884SDavid Howells 227d2ddc776SDavid Howells /* Known servers. Theoretically each fileserver can only be in one 228d2ddc776SDavid Howells * cell, but in practice, people create aliases and subsets and there's 229d2ddc776SDavid Howells * no easy way to distinguish them. 230d2ddc776SDavid Howells */ 231d2ddc776SDavid Howells seqlock_t fs_lock; /* For fs_servers */ 232d2ddc776SDavid Howells struct rb_root fs_servers; /* afs_server (by server UUID or address) */ 233d2ddc776SDavid Howells struct list_head fs_updates; /* afs_server (by update_at) */ 234d2ddc776SDavid Howells struct hlist_head fs_proc; /* procfs servers list */ 235d2ddc776SDavid Howells 236d2ddc776SDavid Howells struct hlist_head fs_addresses4; /* afs_server (by lowest IPv4 addr) */ 237d2ddc776SDavid Howells struct hlist_head fs_addresses6; /* afs_server (by lowest IPv6 addr) */ 238d2ddc776SDavid Howells seqlock_t fs_addr_lock; /* For fs_addresses[46] */ 239d2ddc776SDavid Howells 240d2ddc776SDavid Howells struct work_struct fs_manager; 241d2ddc776SDavid Howells struct timer_list fs_timer; 242d2ddc776SDavid Howells atomic_t servers_outstanding; 243f044c884SDavid Howells 244f044c884SDavid Howells /* File locking renewal management */ 245f044c884SDavid Howells struct mutex lock_manager_mutex; 246f044c884SDavid Howells 247f044c884SDavid Howells /* Misc */ 248f044c884SDavid Howells struct proc_dir_entry *proc_afs; /* /proc/net/afs directory */ 249f044c884SDavid Howells }; 250f044c884SDavid Howells 251f044c884SDavid Howells extern struct afs_net __afs_net;// Dummy AFS network namespace; TODO: replace with real netns 252f044c884SDavid Howells 253989782dcSDavid Howells enum afs_cell_state { 254989782dcSDavid Howells AFS_CELL_UNSET, 255989782dcSDavid Howells AFS_CELL_ACTIVATING, 256989782dcSDavid Howells AFS_CELL_ACTIVE, 257989782dcSDavid Howells AFS_CELL_DEACTIVATING, 258989782dcSDavid Howells AFS_CELL_INACTIVE, 259989782dcSDavid Howells AFS_CELL_FAILED, 260989782dcSDavid Howells }; 261989782dcSDavid Howells 262f044c884SDavid Howells /* 263d2ddc776SDavid Howells * AFS cell record. 264d2ddc776SDavid Howells * 265d2ddc776SDavid Howells * This is a tricky concept to get right as it is possible to create aliases 266d2ddc776SDavid Howells * simply by pointing AFSDB/SRV records for two names at the same set of VL 267d2ddc776SDavid Howells * servers; it is also possible to do things like setting up two sets of VL 268d2ddc776SDavid Howells * servers, one of which provides a superset of the volumes provided by the 269d2ddc776SDavid Howells * other (for internal/external division, for example). 270d2ddc776SDavid Howells * 271d2ddc776SDavid Howells * Cells only exist in the sense that (a) a cell's name maps to a set of VL 272d2ddc776SDavid Howells * servers and (b) a cell's name is used by the client to select the key to use 273d2ddc776SDavid Howells * for authentication and encryption. The cell name is not typically used in 274d2ddc776SDavid Howells * the protocol. 275d2ddc776SDavid Howells * 276d2ddc776SDavid Howells * There is no easy way to determine if two cells are aliases or one is a 277d2ddc776SDavid Howells * subset of another. 27808e0e7c8SDavid Howells */ 27908e0e7c8SDavid Howells struct afs_cell { 280989782dcSDavid Howells union { 281989782dcSDavid Howells struct rcu_head rcu; 282989782dcSDavid Howells struct rb_node net_node; /* Node in net->cells */ 283989782dcSDavid Howells }; 284989782dcSDavid Howells struct afs_net *net; 28500d3b7a4SDavid Howells struct key *anonymous_key; /* anonymous user key for this cell */ 286989782dcSDavid Howells struct work_struct manager; /* Manager for init/deinit/dns */ 28708e0e7c8SDavid Howells struct list_head proc_link; /* /proc cell list link */ 2889b3f26c9SDavid Howells #ifdef CONFIG_AFS_FSCACHE 2899b3f26c9SDavid Howells struct fscache_cookie *cache; /* caching cookie */ 2901da177e4SLinus Torvalds #endif 291989782dcSDavid Howells time64_t dns_expiry; /* Time AFSDB/SRV record expires */ 292989782dcSDavid Howells time64_t last_inactive; /* Time of last drop of usage count */ 293989782dcSDavid Howells atomic_t usage; 294989782dcSDavid Howells unsigned long flags; 295989782dcSDavid Howells #define AFS_CELL_FL_NOT_READY 0 /* The cell record is not ready for use */ 296989782dcSDavid Howells #define AFS_CELL_FL_NO_GC 1 /* The cell was added manually, don't auto-gc */ 297989782dcSDavid Howells #define AFS_CELL_FL_NOT_FOUND 2 /* Permanent DNS error */ 298989782dcSDavid Howells #define AFS_CELL_FL_DNS_FAIL 3 /* Failed to access DNS */ 2998b2a464cSDavid Howells #define AFS_CELL_FL_NO_LOOKUP_YET 4 /* Not completed first DNS lookup yet */ 300989782dcSDavid Howells enum afs_cell_state state; 301989782dcSDavid Howells short error; 302989782dcSDavid Howells 303d2ddc776SDavid Howells /* Active fileserver interaction state. */ 304d2ddc776SDavid Howells struct list_head proc_volumes; /* procfs volume list */ 305d2ddc776SDavid Howells rwlock_t proc_lock; 306989782dcSDavid Howells 307d2ddc776SDavid Howells /* VL server list. */ 3088b2a464cSDavid Howells rwlock_t vl_addrs_lock; /* Lock on vl_addrs */ 3098b2a464cSDavid Howells struct afs_addr_list __rcu *vl_addrs; /* List of VL servers */ 310989782dcSDavid Howells u8 name_len; /* Length of name */ 311989782dcSDavid Howells char name[64 + 1]; /* Cell name, case-flattened and NUL-padded */ 31208e0e7c8SDavid Howells }; 31308e0e7c8SDavid Howells 31408e0e7c8SDavid Howells /* 315d2ddc776SDavid Howells * Cached VLDB entry. 316d2ddc776SDavid Howells * 317d2ddc776SDavid Howells * This is pointed to by cell->vldb_entries, indexed by name. 31808e0e7c8SDavid Howells */ 319d2ddc776SDavid Howells struct afs_vldb_entry { 320d2ddc776SDavid Howells afs_volid_t vid[3]; /* Volume IDs for R/W, R/O and Bak volumes */ 32100d3b7a4SDavid Howells 322d2ddc776SDavid Howells unsigned long flags; 323d2ddc776SDavid Howells #define AFS_VLDB_HAS_RW 0 /* - R/W volume exists */ 324d2ddc776SDavid Howells #define AFS_VLDB_HAS_RO 1 /* - R/O volume exists */ 325d2ddc776SDavid Howells #define AFS_VLDB_HAS_BAK 2 /* - Backup volume exists */ 326d2ddc776SDavid Howells #define AFS_VLDB_QUERY_VALID 3 /* - Record is valid */ 327d2ddc776SDavid Howells #define AFS_VLDB_QUERY_ERROR 4 /* - VL server returned error */ 328d2ddc776SDavid Howells 329d2ddc776SDavid Howells uuid_t fs_server[AFS_NMAXNSERVERS]; 330d2ddc776SDavid Howells u8 fs_mask[AFS_NMAXNSERVERS]; 33108e0e7c8SDavid Howells #define AFS_VOL_VTM_RW 0x01 /* R/W version of the volume is available (on this server) */ 33208e0e7c8SDavid Howells #define AFS_VOL_VTM_RO 0x02 /* R/O version of the volume is available (on this server) */ 33308e0e7c8SDavid Howells #define AFS_VOL_VTM_BAK 0x04 /* backup version of the volume is available (on this server) */ 334d2ddc776SDavid Howells short error; 335d2ddc776SDavid Howells u8 nr_servers; /* Number of server records */ 336d2ddc776SDavid Howells u8 name_len; 337d2ddc776SDavid Howells u8 name[AFS_MAXVOLNAME + 1]; /* NUL-padded volume name */ 33808e0e7c8SDavid Howells }; 33908e0e7c8SDavid Howells 34008e0e7c8SDavid Howells /* 341d2ddc776SDavid Howells * Record of fileserver with which we're actively communicating. 34208e0e7c8SDavid Howells */ 34308e0e7c8SDavid Howells struct afs_server { 344d2ddc776SDavid Howells struct rcu_head rcu; 345d2ddc776SDavid Howells union { 346d2ddc776SDavid Howells uuid_t uuid; /* Server ID */ 347d2ddc776SDavid Howells struct afs_uuid _uuid; 348d2ddc776SDavid Howells }; 349c435ee34SDavid Howells 350d2ddc776SDavid Howells struct afs_addr_list __rcu *addresses; 351d2ddc776SDavid Howells struct rb_node uuid_rb; /* Link in net->servers */ 352d2ddc776SDavid Howells struct hlist_node addr4_link; /* Link in net->fs_addresses4 */ 353d2ddc776SDavid Howells struct hlist_node addr6_link; /* Link in net->fs_addresses6 */ 354d2ddc776SDavid Howells struct hlist_node proc_link; /* Link in net->fs_proc */ 355d2ddc776SDavid Howells struct afs_server *gc_next; /* Next server in manager's list */ 356d2ddc776SDavid Howells time64_t put_time; /* Time at which last put */ 357d2ddc776SDavid Howells time64_t update_at; /* Time at which to next update the record */ 358c435ee34SDavid Howells unsigned long flags; 359d2ddc776SDavid Howells #define AFS_SERVER_FL_NEW 0 /* New server, don't inc cb_s_break */ 360d2ddc776SDavid Howells #define AFS_SERVER_FL_NOT_READY 1 /* The record is not ready for use */ 361d2ddc776SDavid Howells #define AFS_SERVER_FL_NOT_FOUND 2 /* VL server says no such server */ 362d2ddc776SDavid Howells #define AFS_SERVER_FL_VL_FAIL 3 /* Failed to access VL server */ 363d2ddc776SDavid Howells #define AFS_SERVER_FL_UPDATING 4 364d2ddc776SDavid Howells #define AFS_SERVER_FL_PROBED 5 /* The fileserver has been probed */ 365d2ddc776SDavid Howells #define AFS_SERVER_FL_PROBING 6 /* Fileserver is being probed */ 3665cf9dd55SDavid Howells #define AFS_SERVER_FL_NO_IBULK 7 /* Fileserver doesn't support FS.InlineBulkStatus */ 367d2ddc776SDavid Howells atomic_t usage; 368d2ddc776SDavid Howells u32 addr_version; /* Address list version */ 36908e0e7c8SDavid Howells 37008e0e7c8SDavid Howells /* file service access */ 371d2ddc776SDavid Howells rwlock_t fs_lock; /* access lock */ 37208e0e7c8SDavid Howells 37308e0e7c8SDavid Howells /* callback promise management */ 374c435ee34SDavid Howells struct list_head cb_interests; /* List of superblocks using this server */ 375c435ee34SDavid Howells unsigned cb_s_break; /* Break-everything counter. */ 376c435ee34SDavid Howells rwlock_t cb_break_lock; /* Volume finding lock */ 377c435ee34SDavid Howells }; 378c435ee34SDavid Howells 379c435ee34SDavid Howells /* 380c435ee34SDavid Howells * Interest by a superblock on a server. 381c435ee34SDavid Howells */ 382c435ee34SDavid Howells struct afs_cb_interest { 383c435ee34SDavid Howells struct list_head cb_link; /* Link in server->cb_interests */ 384c435ee34SDavid Howells struct afs_server *server; /* Server on which this interest resides */ 385c435ee34SDavid Howells struct super_block *sb; /* Superblock on which inodes reside */ 386c435ee34SDavid Howells afs_volid_t vid; /* Volume ID to match */ 387c435ee34SDavid Howells refcount_t usage; 38808e0e7c8SDavid Howells }; 38908e0e7c8SDavid Howells 39008e0e7c8SDavid Howells /* 391d2ddc776SDavid Howells * Replaceable server list. 39208e0e7c8SDavid Howells */ 393d2ddc776SDavid Howells struct afs_server_entry { 394d2ddc776SDavid Howells struct afs_server *server; 395d2ddc776SDavid Howells struct afs_cb_interest *cb_interest; 396d2ddc776SDavid Howells }; 397d2ddc776SDavid Howells 398d2ddc776SDavid Howells struct afs_server_list { 399d2ddc776SDavid Howells refcount_t usage; 400d2ddc776SDavid Howells unsigned short nr_servers; 401d2ddc776SDavid Howells unsigned short index; /* Server currently in use */ 402d2ddc776SDavid Howells unsigned short vnovol_mask; /* Servers to be skipped due to VNOVOL */ 403d2ddc776SDavid Howells unsigned int seq; /* Set to ->servers_seq when installed */ 404d2ddc776SDavid Howells struct afs_server_entry servers[]; 40508e0e7c8SDavid Howells }; 40608e0e7c8SDavid Howells 40708e0e7c8SDavid Howells /* 408d2ddc776SDavid Howells * Live AFS volume management. 40908e0e7c8SDavid Howells */ 410d2ddc776SDavid Howells struct afs_volume { 411d2ddc776SDavid Howells afs_volid_t vid; /* volume ID */ 412d2ddc776SDavid Howells atomic_t usage; 413d2ddc776SDavid Howells time64_t update_at; /* Time at which to next update */ 414d2ddc776SDavid Howells struct afs_cell *cell; /* Cell to which belongs (pins ref) */ 415d2ddc776SDavid Howells struct list_head proc_link; /* Link in cell->vl_proc */ 416d2ddc776SDavid Howells unsigned long flags; 417d2ddc776SDavid Howells #define AFS_VOLUME_NEEDS_UPDATE 0 /* - T if an update needs performing */ 418d2ddc776SDavid Howells #define AFS_VOLUME_UPDATING 1 /* - T if an update is in progress */ 419d2ddc776SDavid Howells #define AFS_VOLUME_WAIT 2 /* - T if users must wait for update */ 420d2ddc776SDavid Howells #define AFS_VOLUME_DELETED 3 /* - T if volume appears deleted */ 421d2ddc776SDavid Howells #define AFS_VOLUME_OFFLINE 4 /* - T if volume offline notice given */ 422d2ddc776SDavid Howells #define AFS_VOLUME_BUSY 5 /* - T if volume busy notice given */ 423d2ddc776SDavid Howells #ifdef CONFIG_AFS_FSCACHE 424d2ddc776SDavid Howells struct fscache_cookie *cache; /* caching cookie */ 425d2ddc776SDavid Howells #endif 426d2ddc776SDavid Howells struct afs_server_list *servers; /* List of servers on which volume resides */ 427d2ddc776SDavid Howells rwlock_t servers_lock; /* Lock for ->servers */ 428d2ddc776SDavid Howells unsigned int servers_seq; /* Incremented each time ->servers changes */ 429d2ddc776SDavid Howells 430d2ddc776SDavid Howells afs_voltype_t type; /* type of volume */ 431d2ddc776SDavid Howells short error; 432d2ddc776SDavid Howells char type_force; /* force volume type (suppress R/O -> R/W) */ 433d2ddc776SDavid Howells u8 name_len; 434d2ddc776SDavid Howells u8 name[AFS_MAXVOLNAME + 1]; /* NUL-padded volume name */ 43508e0e7c8SDavid Howells }; 43608e0e7c8SDavid Howells 4370fafdc9fSDavid Howells enum afs_lock_state { 4380fafdc9fSDavid Howells AFS_VNODE_LOCK_NONE, /* The vnode has no lock on the server */ 4390fafdc9fSDavid Howells AFS_VNODE_LOCK_WAITING_FOR_CB, /* We're waiting for the server to break the callback */ 4400fafdc9fSDavid Howells AFS_VNODE_LOCK_SETTING, /* We're asking the server for a lock */ 4410fafdc9fSDavid Howells AFS_VNODE_LOCK_GRANTED, /* We have a lock on the server */ 4420fafdc9fSDavid Howells AFS_VNODE_LOCK_EXTENDING, /* We're extending a lock on the server */ 4430fafdc9fSDavid Howells AFS_VNODE_LOCK_NEED_UNLOCK, /* We need to unlock on the server */ 4440fafdc9fSDavid Howells AFS_VNODE_LOCK_UNLOCKING, /* We're telling the server to unlock */ 4450fafdc9fSDavid Howells }; 4460fafdc9fSDavid Howells 44708e0e7c8SDavid Howells /* 448f8de483eSDavid Howells * AFS inode private data. 449f8de483eSDavid Howells * 450f8de483eSDavid Howells * Note that afs_alloc_inode() *must* reset anything that could incorrectly 451f8de483eSDavid Howells * leak from one inode to another. 45208e0e7c8SDavid Howells */ 45308e0e7c8SDavid Howells struct afs_vnode { 45408e0e7c8SDavid Howells struct inode vfs_inode; /* the VFS's inode record */ 45508e0e7c8SDavid Howells 45608e0e7c8SDavid Howells struct afs_volume *volume; /* volume on which vnode resides */ 45708e0e7c8SDavid Howells struct afs_fid fid; /* the file identifier for this inode */ 45808e0e7c8SDavid Howells struct afs_file_status status; /* AFS status info for this file */ 4599b3f26c9SDavid Howells #ifdef CONFIG_AFS_FSCACHE 4609b3f26c9SDavid Howells struct fscache_cookie *cache; /* caching cookie */ 46108e0e7c8SDavid Howells #endif 462fe342cf7SDavid Howells struct afs_permits __rcu *permit_cache; /* cache of permits so far obtained */ 463d2ddc776SDavid Howells struct mutex io_lock; /* Lock for serialising I/O on this mutex */ 464260a9803SDavid Howells struct mutex validate_lock; /* lock for validating this vnode */ 4654343d008SDavid Howells spinlock_t wb_lock; /* lock for wb_keys */ 46608e0e7c8SDavid Howells spinlock_t lock; /* waitqueue/flags lock */ 46708e0e7c8SDavid Howells unsigned long flags; 468c435ee34SDavid Howells #define AFS_VNODE_CB_PROMISED 0 /* Set if vnode has a callback promise */ 469260a9803SDavid Howells #define AFS_VNODE_UNSET 1 /* set if vnode attributes not yet set */ 470c435ee34SDavid Howells #define AFS_VNODE_DIR_MODIFIED 2 /* set if dir vnode's data modified */ 47108e0e7c8SDavid Howells #define AFS_VNODE_ZAP_DATA 3 /* set if vnode's data should be invalidated */ 47208e0e7c8SDavid Howells #define AFS_VNODE_DELETED 4 /* set if vnode deleted on server */ 47308e0e7c8SDavid Howells #define AFS_VNODE_MOUNTPOINT 5 /* set if vnode is a mountpoint symlink */ 4740fafdc9fSDavid Howells #define AFS_VNODE_AUTOCELL 6 /* set if Vnode is an auto mount point */ 4750fafdc9fSDavid Howells #define AFS_VNODE_PSEUDODIR 7 /* set if Vnode is a pseudo directory */ 47608e0e7c8SDavid Howells 4774343d008SDavid Howells struct list_head wb_keys; /* List of keys available for writeback */ 478e8d6c554SDavid Howells struct list_head pending_locks; /* locks waiting to be granted */ 479e8d6c554SDavid Howells struct list_head granted_locks; /* locks granted on this file */ 480e8d6c554SDavid Howells struct delayed_work lock_work; /* work to be done in locking */ 4810fafdc9fSDavid Howells struct key *lock_key; /* Key to be used in lock ops */ 4820fafdc9fSDavid Howells enum afs_lock_state lock_state : 8; 4830fafdc9fSDavid Howells afs_lock_type_t lock_type : 8; 48431143d5dSDavid Howells 48508e0e7c8SDavid Howells /* outstanding callback notification on this file */ 486c435ee34SDavid Howells struct afs_cb_interest *cb_interest; /* Server on which this resides */ 487c435ee34SDavid Howells unsigned int cb_s_break; /* Mass break counter on ->server */ 488c435ee34SDavid Howells unsigned int cb_break; /* Break counter on vnode */ 489c435ee34SDavid Howells seqlock_t cb_lock; /* Lock for ->cb_interest, ->status, ->cb_*break */ 490c435ee34SDavid Howells 491c435ee34SDavid Howells time64_t cb_expires_at; /* time at which callback expires */ 49208e0e7c8SDavid Howells unsigned cb_version; /* callback version */ 49308e0e7c8SDavid Howells afs_callback_type_t cb_type; /* type of callback */ 49408e0e7c8SDavid Howells }; 49508e0e7c8SDavid Howells 49600d3b7a4SDavid Howells /* 49700d3b7a4SDavid Howells * cached security record for one user's attempt to access a vnode 49800d3b7a4SDavid Howells */ 49900d3b7a4SDavid Howells struct afs_permit { 50000d3b7a4SDavid Howells struct key *key; /* RxRPC ticket holding a security context */ 501be080a6fSDavid Howells afs_access_t access; /* CallerAccess value for this key */ 50200d3b7a4SDavid Howells }; 50300d3b7a4SDavid Howells 50400d3b7a4SDavid Howells /* 505be080a6fSDavid Howells * Immutable cache of CallerAccess records from attempts to access vnodes. 506be080a6fSDavid Howells * These may be shared between multiple vnodes. 50700d3b7a4SDavid Howells */ 50800d3b7a4SDavid Howells struct afs_permits { 509be080a6fSDavid Howells struct rcu_head rcu; 510be080a6fSDavid Howells struct hlist_node hash_node; /* Link in hash */ 511be080a6fSDavid Howells unsigned long h; /* Hash value for this permit list */ 512be080a6fSDavid Howells refcount_t usage; 513be080a6fSDavid Howells unsigned short nr_permits; /* Number of records */ 514be080a6fSDavid Howells bool invalidated; /* Invalidated due to key change */ 515be080a6fSDavid Howells struct afs_permit permits[]; /* List of permits sorted by key pointer */ 51600d3b7a4SDavid Howells }; 51700d3b7a4SDavid Howells 518b908fe6bSDavid Howells /* 519b908fe6bSDavid Howells * record of one of a system's set of network interfaces 520b908fe6bSDavid Howells */ 521b908fe6bSDavid Howells struct afs_interface { 522b908fe6bSDavid Howells struct in_addr address; /* IPv4 address bound to interface */ 523b908fe6bSDavid Howells struct in_addr netmask; /* netmask applied to address */ 524b908fe6bSDavid Howells unsigned mtu; /* MTU of interface */ 525b908fe6bSDavid Howells }; 526b908fe6bSDavid Howells 5278b2a464cSDavid Howells /* 5288b2a464cSDavid Howells * Cursor for iterating over a server's address list. 5298b2a464cSDavid Howells */ 5308b2a464cSDavid Howells struct afs_addr_cursor { 5318b2a464cSDavid Howells struct afs_addr_list *alist; /* Current address list (pins ref) */ 5328b2a464cSDavid Howells struct sockaddr_rxrpc *addr; 533d2ddc776SDavid Howells u32 abort_code; 5348b2a464cSDavid Howells unsigned short start; /* Starting point in alist->addrs[] */ 5358b2a464cSDavid Howells unsigned short index; /* Wrapping offset from start to current addr */ 5368b2a464cSDavid Howells short error; 5378b2a464cSDavid Howells bool begun; /* T if we've begun iteration */ 5388b2a464cSDavid Howells bool responded; /* T if the current address responded */ 5398b2a464cSDavid Howells }; 5408b2a464cSDavid Howells 5418b2a464cSDavid Howells /* 5428b2a464cSDavid Howells * Cursor for iterating over a set of fileservers. 5438b2a464cSDavid Howells */ 5448b2a464cSDavid Howells struct afs_fs_cursor { 5458b2a464cSDavid Howells struct afs_addr_cursor ac; 546d2ddc776SDavid Howells struct afs_vnode *vnode; 547d2ddc776SDavid Howells struct afs_server_list *server_list; /* Current server list (pins ref) */ 548d2ddc776SDavid Howells struct afs_cb_interest *cbi; /* Server on which this resides (pins ref) */ 549d2ddc776SDavid Howells struct key *key; /* Key for the server */ 550d2ddc776SDavid Howells unsigned int cb_break; /* cb_break + cb_s_break before the call */ 551d2ddc776SDavid Howells unsigned int cb_break_2; /* cb_break + cb_s_break (2nd vnode) */ 552d2ddc776SDavid Howells unsigned char start; /* Initial index in server list */ 553d2ddc776SDavid Howells unsigned char index; /* Number of servers tried beyond start */ 554d2ddc776SDavid Howells unsigned short flags; 555d2ddc776SDavid Howells #define AFS_FS_CURSOR_STOP 0x0001 /* Set to cease iteration */ 556d2ddc776SDavid Howells #define AFS_FS_CURSOR_VBUSY 0x0002 /* Set if seen VBUSY */ 557d2ddc776SDavid Howells #define AFS_FS_CURSOR_VMOVED 0x0004 /* Set if seen VMOVED */ 558d2ddc776SDavid Howells #define AFS_FS_CURSOR_VNOVOL 0x0008 /* Set if seen VNOVOL */ 559d2ddc776SDavid Howells #define AFS_FS_CURSOR_CUR_ONLY 0x0010 /* Set if current server only (file lock held) */ 560d2ddc776SDavid Howells #define AFS_FS_CURSOR_NO_VSLEEP 0x0020 /* Set to prevent sleep on VBUSY, VOFFLINE, ... */ 5618b2a464cSDavid Howells }; 5628b2a464cSDavid Howells 563402cb8ddSDavid Howells /* 564402cb8ddSDavid Howells * Cache auxiliary data. 565402cb8ddSDavid Howells */ 566402cb8ddSDavid Howells struct afs_vnode_cache_aux { 567402cb8ddSDavid Howells u64 data_version; 568402cb8ddSDavid Howells } __packed; 569402cb8ddSDavid Howells 57098bf40cdSDavid Howells #include <trace/events/afs.h> 57198bf40cdSDavid Howells 57208e0e7c8SDavid Howells /*****************************************************************************/ 57308e0e7c8SDavid Howells /* 5748b2a464cSDavid Howells * addr_list.c 5758b2a464cSDavid Howells */ 5768b2a464cSDavid Howells static inline struct afs_addr_list *afs_get_addrlist(struct afs_addr_list *alist) 5778b2a464cSDavid Howells { 5788b2a464cSDavid Howells if (alist) 5798b2a464cSDavid Howells refcount_inc(&alist->usage); 5808b2a464cSDavid Howells return alist; 5818b2a464cSDavid Howells } 5828b2a464cSDavid Howells extern struct afs_addr_list *afs_alloc_addrlist(unsigned int, 5838b2a464cSDavid Howells unsigned short, 5848b2a464cSDavid Howells unsigned short); 5858b2a464cSDavid Howells extern void afs_put_addrlist(struct afs_addr_list *); 5868b2a464cSDavid Howells extern struct afs_addr_list *afs_parse_text_addrs(const char *, size_t, char, 5878b2a464cSDavid Howells unsigned short, unsigned short); 5888b2a464cSDavid Howells extern struct afs_addr_list *afs_dns_query(struct afs_cell *, time64_t *); 5898b2a464cSDavid Howells extern bool afs_iterate_addresses(struct afs_addr_cursor *); 5908b2a464cSDavid Howells extern int afs_end_cursor(struct afs_addr_cursor *); 5918b2a464cSDavid Howells extern int afs_set_vl_cursor(struct afs_addr_cursor *, struct afs_cell *); 5928b2a464cSDavid Howells 593bf99a53cSDavid Howells extern void afs_merge_fs_addr4(struct afs_addr_list *, __be32, u16); 594bf99a53cSDavid Howells extern void afs_merge_fs_addr6(struct afs_addr_list *, __be32 *, u16); 595d2ddc776SDavid Howells 5968b2a464cSDavid Howells /* 5979b3f26c9SDavid Howells * cache.c 5989b3f26c9SDavid Howells */ 5999b3f26c9SDavid Howells #ifdef CONFIG_AFS_FSCACHE 6009b3f26c9SDavid Howells extern struct fscache_netfs afs_cache_netfs; 6019b3f26c9SDavid Howells extern struct fscache_cookie_def afs_cell_cache_index_def; 6029b3f26c9SDavid Howells extern struct fscache_cookie_def afs_volume_cache_index_def; 6039b3f26c9SDavid Howells extern struct fscache_cookie_def afs_vnode_cache_index_def; 6049b3f26c9SDavid Howells #else 6059b3f26c9SDavid Howells #define afs_cell_cache_index_def (*(struct fscache_cookie_def *) NULL) 6069b3f26c9SDavid Howells #define afs_volume_cache_index_def (*(struct fscache_cookie_def *) NULL) 6079b3f26c9SDavid Howells #define afs_vnode_cache_index_def (*(struct fscache_cookie_def *) NULL) 6089b3f26c9SDavid Howells #endif 6099b3f26c9SDavid Howells 6109b3f26c9SDavid Howells /* 61108e0e7c8SDavid Howells * callback.c 61208e0e7c8SDavid Howells */ 61308e0e7c8SDavid Howells extern void afs_init_callback_state(struct afs_server *); 614c435ee34SDavid Howells extern void afs_break_callback(struct afs_vnode *); 6155cf9dd55SDavid Howells extern void afs_break_callbacks(struct afs_server *, size_t, struct afs_callback_break*); 616c435ee34SDavid Howells 617d2ddc776SDavid Howells extern int afs_register_server_cb_interest(struct afs_vnode *, struct afs_server_entry *); 618c435ee34SDavid Howells extern void afs_put_cb_interest(struct afs_net *, struct afs_cb_interest *); 619d2ddc776SDavid Howells extern void afs_clear_callback_interests(struct afs_net *, struct afs_server_list *); 620c435ee34SDavid Howells 621c435ee34SDavid Howells static inline struct afs_cb_interest *afs_get_cb_interest(struct afs_cb_interest *cbi) 622c435ee34SDavid Howells { 623c435ee34SDavid Howells refcount_inc(&cbi->usage); 624c435ee34SDavid Howells return cbi; 625c435ee34SDavid Howells } 6261da177e4SLinus Torvalds 6271da177e4SLinus Torvalds /* 6281da177e4SLinus Torvalds * cell.c 6291da177e4SLinus Torvalds */ 630989782dcSDavid Howells extern int afs_cell_init(struct afs_net *, const char *); 631989782dcSDavid Howells extern struct afs_cell *afs_lookup_cell_rcu(struct afs_net *, const char *, unsigned); 632989782dcSDavid Howells extern struct afs_cell *afs_lookup_cell(struct afs_net *, const char *, unsigned, 633989782dcSDavid Howells const char *, bool); 6348b2a464cSDavid Howells extern struct afs_cell *afs_get_cell(struct afs_cell *); 6359ed900b1SDavid Howells extern void afs_put_cell(struct afs_net *, struct afs_cell *); 636989782dcSDavid Howells extern void afs_manage_cells(struct work_struct *); 637989782dcSDavid Howells extern void afs_cells_timer(struct timer_list *); 638f044c884SDavid Howells extern void __net_exit afs_cell_purge(struct afs_net *); 63908e0e7c8SDavid Howells 64008e0e7c8SDavid Howells /* 64108e0e7c8SDavid Howells * cmservice.c 64208e0e7c8SDavid Howells */ 64308e0e7c8SDavid Howells extern bool afs_cm_incoming_call(struct afs_call *); 64408e0e7c8SDavid Howells 6451da177e4SLinus Torvalds /* 6461da177e4SLinus Torvalds * dir.c 6471da177e4SLinus Torvalds */ 6484b6f5d20SArjan van de Ven extern const struct file_operations afs_dir_file_operations; 6494d673da1SDavid Howells extern const struct inode_operations afs_dir_inode_operations; 6504d673da1SDavid Howells extern const struct file_operations afs_dynroot_file_operations; 6514d673da1SDavid Howells extern const struct inode_operations afs_dynroot_inode_operations; 6524d673da1SDavid Howells extern const struct dentry_operations afs_fs_dentry_operations; 6534d673da1SDavid Howells 6544d673da1SDavid Howells extern bool afs_dir_check_page(struct inode *, struct page *); 6551da177e4SLinus Torvalds 6561da177e4SLinus Torvalds /* 6571da177e4SLinus Torvalds * file.c 6581da177e4SLinus Torvalds */ 659f5e54d6eSChristoph Hellwig extern const struct address_space_operations afs_fs_aops; 660754661f1SArjan van de Ven extern const struct inode_operations afs_file_inode_operations; 66100d3b7a4SDavid Howells extern const struct file_operations afs_file_operations; 66200d3b7a4SDavid Howells 6634343d008SDavid Howells extern int afs_cache_wb_key(struct afs_vnode *, struct afs_file *); 6644343d008SDavid Howells extern void afs_put_wb_key(struct afs_wb_key *); 66500d3b7a4SDavid Howells extern int afs_open(struct inode *, struct file *); 66600d3b7a4SDavid Howells extern int afs_release(struct inode *, struct file *); 667d2ddc776SDavid Howells extern int afs_fetch_data(struct afs_vnode *, struct key *, struct afs_read *); 668f6d335c0SAl Viro extern int afs_page_filler(void *, struct page *); 669196ee9cdSDavid Howells extern void afs_put_read(struct afs_read *); 6701da177e4SLinus Torvalds 6711da177e4SLinus Torvalds /* 672e8d6c554SDavid Howells * flock.c 673e8d6c554SDavid Howells */ 674f044c884SDavid Howells extern struct workqueue_struct *afs_lock_manager; 675f044c884SDavid Howells 676e8d6c554SDavid Howells extern void afs_lock_work(struct work_struct *); 677e8d6c554SDavid Howells extern void afs_lock_may_be_available(struct afs_vnode *); 678e8d6c554SDavid Howells extern int afs_lock(struct file *, int, struct file_lock *); 679e8d6c554SDavid Howells extern int afs_flock(struct file *, int, struct file_lock *); 680e8d6c554SDavid Howells 681e8d6c554SDavid Howells /* 68208e0e7c8SDavid Howells * fsclient.c 68308e0e7c8SDavid Howells */ 684d2ddc776SDavid Howells extern int afs_fs_fetch_file_status(struct afs_fs_cursor *, struct afs_volsync *); 685d2ddc776SDavid Howells extern int afs_fs_give_up_callbacks(struct afs_net *, struct afs_server *); 686d2ddc776SDavid Howells extern int afs_fs_fetch_data(struct afs_fs_cursor *, struct afs_read *); 687d2ddc776SDavid Howells extern int afs_fs_create(struct afs_fs_cursor *, const char *, umode_t, 688d2ddc776SDavid Howells struct afs_fid *, struct afs_file_status *, struct afs_callback *); 689d2ddc776SDavid Howells extern int afs_fs_remove(struct afs_fs_cursor *, const char *, bool); 690d2ddc776SDavid Howells extern int afs_fs_link(struct afs_fs_cursor *, struct afs_vnode *, const char *); 691d2ddc776SDavid Howells extern int afs_fs_symlink(struct afs_fs_cursor *, const char *, const char *, 692d2ddc776SDavid Howells struct afs_fid *, struct afs_file_status *); 693d2ddc776SDavid Howells extern int afs_fs_rename(struct afs_fs_cursor *, const char *, 694d2ddc776SDavid Howells struct afs_vnode *, const char *); 6954343d008SDavid Howells extern int afs_fs_store_data(struct afs_fs_cursor *, struct address_space *, 696d2ddc776SDavid Howells pgoff_t, pgoff_t, unsigned, unsigned); 697d2ddc776SDavid Howells extern int afs_fs_setattr(struct afs_fs_cursor *, struct iattr *); 698d2ddc776SDavid Howells extern int afs_fs_get_volume_status(struct afs_fs_cursor *, struct afs_volume_status *); 699d2ddc776SDavid Howells extern int afs_fs_set_lock(struct afs_fs_cursor *, afs_lock_type_t); 700d2ddc776SDavid Howells extern int afs_fs_extend_lock(struct afs_fs_cursor *); 701d2ddc776SDavid Howells extern int afs_fs_release_lock(struct afs_fs_cursor *); 702d2ddc776SDavid Howells extern int afs_fs_give_up_all_callbacks(struct afs_net *, struct afs_server *, 703d2ddc776SDavid Howells struct afs_addr_cursor *, struct key *); 704d2ddc776SDavid Howells extern int afs_fs_get_capabilities(struct afs_net *, struct afs_server *, 705d2ddc776SDavid Howells struct afs_addr_cursor *, struct key *); 7065cf9dd55SDavid Howells extern int afs_fs_inline_bulk_status(struct afs_fs_cursor *, struct afs_net *, 7075cf9dd55SDavid Howells struct afs_fid *, struct afs_file_status *, 7085cf9dd55SDavid Howells struct afs_callback *, unsigned int, 7095cf9dd55SDavid Howells struct afs_volsync *); 7105cf9dd55SDavid Howells extern int afs_fs_fetch_status(struct afs_fs_cursor *, struct afs_net *, 7115cf9dd55SDavid Howells struct afs_fid *, struct afs_file_status *, 7125cf9dd55SDavid Howells struct afs_callback *, struct afs_volsync *); 71308e0e7c8SDavid Howells 71408e0e7c8SDavid Howells /* 7151da177e4SLinus Torvalds * inode.c 7161da177e4SLinus Torvalds */ 717d2ddc776SDavid Howells extern int afs_fetch_status(struct afs_vnode *, struct key *); 718c435ee34SDavid Howells extern int afs_iget5_test(struct inode *, void *); 7194d673da1SDavid Howells extern struct inode *afs_iget_pseudo_dir(struct super_block *, bool); 72000d3b7a4SDavid Howells extern struct inode *afs_iget(struct super_block *, struct key *, 721260a9803SDavid Howells struct afs_fid *, struct afs_file_status *, 722d2ddc776SDavid Howells struct afs_callback *, 723d2ddc776SDavid Howells struct afs_cb_interest *); 724416351f2SDavid Howells extern void afs_zap_data(struct afs_vnode *); 725260a9803SDavid Howells extern int afs_validate(struct afs_vnode *, struct key *); 726a528d35eSDavid Howells extern int afs_getattr(const struct path *, struct kstat *, u32, unsigned int); 72731143d5dSDavid Howells extern int afs_setattr(struct dentry *, struct iattr *); 728b57922d9SAl Viro extern void afs_evict_inode(struct inode *); 729bec5eb61Swanglei extern int afs_drop_inode(struct inode *); 7301da177e4SLinus Torvalds 7311da177e4SLinus Torvalds /* 7321da177e4SLinus Torvalds * main.c 7331da177e4SLinus Torvalds */ 7340ad53eeeSTejun Heo extern struct workqueue_struct *afs_wq; 735f044c884SDavid Howells 736f044c884SDavid Howells static inline struct afs_net *afs_d2net(struct dentry *dentry) 737f044c884SDavid Howells { 738f044c884SDavid Howells return &__afs_net; 739f044c884SDavid Howells } 740f044c884SDavid Howells 741f044c884SDavid Howells static inline struct afs_net *afs_i2net(struct inode *inode) 742f044c884SDavid Howells { 743f044c884SDavid Howells return &__afs_net; 744f044c884SDavid Howells } 745f044c884SDavid Howells 746f044c884SDavid Howells static inline struct afs_net *afs_v2net(struct afs_vnode *vnode) 747f044c884SDavid Howells { 748f044c884SDavid Howells return &__afs_net; 749f044c884SDavid Howells } 750f044c884SDavid Howells 751f044c884SDavid Howells static inline struct afs_net *afs_sock2net(struct sock *sk) 752f044c884SDavid Howells { 753f044c884SDavid Howells return &__afs_net; 754f044c884SDavid Howells } 755f044c884SDavid Howells 756f044c884SDavid Howells static inline struct afs_net *afs_get_net(struct afs_net *net) 757f044c884SDavid Howells { 758f044c884SDavid Howells return net; 759f044c884SDavid Howells } 760f044c884SDavid Howells 761f044c884SDavid Howells static inline void afs_put_net(struct afs_net *net) 762f044c884SDavid Howells { 763f044c884SDavid Howells } 7641da177e4SLinus Torvalds 7651da177e4SLinus Torvalds /* 76608e0e7c8SDavid Howells * misc.c 76708e0e7c8SDavid Howells */ 76808e0e7c8SDavid Howells extern int afs_abort_to_error(u32); 76908e0e7c8SDavid Howells 77008e0e7c8SDavid Howells /* 7711da177e4SLinus Torvalds * mntpt.c 7721da177e4SLinus Torvalds */ 773754661f1SArjan van de Ven extern const struct inode_operations afs_mntpt_inode_operations; 774bec5eb61Swanglei extern const struct inode_operations afs_autocell_inode_operations; 7754b6f5d20SArjan van de Ven extern const struct file_operations afs_mntpt_file_operations; 7761da177e4SLinus Torvalds 777d18610b0SDavid Howells extern struct vfsmount *afs_d_automount(struct path *); 77808e0e7c8SDavid Howells extern void afs_mntpt_kill_timer(void); 7791da177e4SLinus Torvalds 7801da177e4SLinus Torvalds /* 781b4db2b35SArnd Bergmann * netdevices.c 782b4db2b35SArnd Bergmann */ 783b4db2b35SArnd Bergmann extern int afs_get_ipv4_interfaces(struct afs_interface *, size_t, bool); 784b4db2b35SArnd Bergmann 785b4db2b35SArnd Bergmann /* 7861da177e4SLinus Torvalds * proc.c 7871da177e4SLinus Torvalds */ 788f044c884SDavid Howells extern int __net_init afs_proc_init(struct afs_net *); 789f044c884SDavid Howells extern void __net_exit afs_proc_cleanup(struct afs_net *); 790f044c884SDavid Howells extern int afs_proc_cell_setup(struct afs_net *, struct afs_cell *); 791f044c884SDavid Howells extern void afs_proc_cell_remove(struct afs_net *, struct afs_cell *); 7921da177e4SLinus Torvalds 79308e0e7c8SDavid Howells /* 794d2ddc776SDavid Howells * rotate.c 795d2ddc776SDavid Howells */ 796d2ddc776SDavid Howells extern bool afs_begin_vnode_operation(struct afs_fs_cursor *, struct afs_vnode *, 797d2ddc776SDavid Howells struct key *); 798d2ddc776SDavid Howells extern bool afs_select_fileserver(struct afs_fs_cursor *); 799d2ddc776SDavid Howells extern bool afs_select_current_fileserver(struct afs_fs_cursor *); 800d2ddc776SDavid Howells extern int afs_end_vnode_operation(struct afs_fs_cursor *); 801d2ddc776SDavid Howells 802d2ddc776SDavid Howells /* 80308e0e7c8SDavid Howells * rxrpc.c 80408e0e7c8SDavid Howells */ 805f044c884SDavid Howells extern struct workqueue_struct *afs_async_calls; 8068324f0bcSDavid Howells 807f044c884SDavid Howells extern int __net_init afs_open_socket(struct afs_net *); 808f044c884SDavid Howells extern void __net_exit afs_close_socket(struct afs_net *); 809f044c884SDavid Howells extern void afs_charge_preallocation(struct work_struct *); 810341f741fSDavid Howells extern void afs_put_call(struct afs_call *); 811341f741fSDavid Howells extern int afs_queue_call_work(struct afs_call *); 8128b2a464cSDavid Howells extern long afs_make_call(struct afs_addr_cursor *, struct afs_call *, gfp_t, bool); 813f044c884SDavid Howells extern struct afs_call *afs_alloc_flat_call(struct afs_net *, 814f044c884SDavid Howells const struct afs_call_type *, 81508e0e7c8SDavid Howells size_t, size_t); 81608e0e7c8SDavid Howells extern void afs_flat_call_destructor(struct afs_call *); 81708e0e7c8SDavid Howells extern void afs_send_empty_reply(struct afs_call *); 818b908fe6bSDavid Howells extern void afs_send_simple_reply(struct afs_call *, const void *, size_t); 819d001648eSDavid Howells extern int afs_extract_data(struct afs_call *, void *, size_t, bool); 82008e0e7c8SDavid Howells 821d001648eSDavid Howells static inline int afs_transfer_reply(struct afs_call *call) 822372ee163SDavid Howells { 823d001648eSDavid Howells return afs_extract_data(call, call->buffer, call->reply_max, false); 824372ee163SDavid Howells } 825372ee163SDavid Howells 82698bf40cdSDavid Howells static inline bool afs_check_call_state(struct afs_call *call, 82798bf40cdSDavid Howells enum afs_call_state state) 82898bf40cdSDavid Howells { 82998bf40cdSDavid Howells return READ_ONCE(call->state) == state; 83098bf40cdSDavid Howells } 83198bf40cdSDavid Howells 83298bf40cdSDavid Howells static inline bool afs_set_call_state(struct afs_call *call, 83398bf40cdSDavid Howells enum afs_call_state from, 83498bf40cdSDavid Howells enum afs_call_state to) 83598bf40cdSDavid Howells { 83698bf40cdSDavid Howells bool ok = false; 83798bf40cdSDavid Howells 83898bf40cdSDavid Howells spin_lock_bh(&call->state_lock); 83998bf40cdSDavid Howells if (call->state == from) { 84098bf40cdSDavid Howells call->state = to; 84198bf40cdSDavid Howells trace_afs_call_state(call, from, to, 0, 0); 84298bf40cdSDavid Howells ok = true; 84398bf40cdSDavid Howells } 84498bf40cdSDavid Howells spin_unlock_bh(&call->state_lock); 84598bf40cdSDavid Howells return ok; 84698bf40cdSDavid Howells } 84798bf40cdSDavid Howells 84898bf40cdSDavid Howells static inline void afs_set_call_complete(struct afs_call *call, 84998bf40cdSDavid Howells int error, u32 remote_abort) 85098bf40cdSDavid Howells { 85198bf40cdSDavid Howells enum afs_call_state state; 85298bf40cdSDavid Howells bool ok = false; 85398bf40cdSDavid Howells 85498bf40cdSDavid Howells spin_lock_bh(&call->state_lock); 85598bf40cdSDavid Howells state = call->state; 85698bf40cdSDavid Howells if (state != AFS_CALL_COMPLETE) { 85798bf40cdSDavid Howells call->abort_code = remote_abort; 85898bf40cdSDavid Howells call->error = error; 85998bf40cdSDavid Howells call->state = AFS_CALL_COMPLETE; 86098bf40cdSDavid Howells trace_afs_call_state(call, state, AFS_CALL_COMPLETE, 86198bf40cdSDavid Howells error, remote_abort); 86298bf40cdSDavid Howells ok = true; 86398bf40cdSDavid Howells } 86498bf40cdSDavid Howells spin_unlock_bh(&call->state_lock); 86598bf40cdSDavid Howells if (ok) 86698bf40cdSDavid Howells trace_afs_call_done(call); 86798bf40cdSDavid Howells } 86898bf40cdSDavid Howells 86908e0e7c8SDavid Howells /* 87000d3b7a4SDavid Howells * security.c 87100d3b7a4SDavid Howells */ 872be080a6fSDavid Howells extern void afs_put_permits(struct afs_permits *); 87300d3b7a4SDavid Howells extern void afs_clear_permits(struct afs_vnode *); 874be080a6fSDavid Howells extern void afs_cache_permit(struct afs_vnode *, struct key *, unsigned int); 875416351f2SDavid Howells extern void afs_zap_permits(struct rcu_head *); 87600d3b7a4SDavid Howells extern struct key *afs_request_key(struct afs_cell *); 8770fafdc9fSDavid Howells extern int afs_check_permit(struct afs_vnode *, struct key *, afs_access_t *); 87810556cb2SAl Viro extern int afs_permission(struct inode *, int); 879be080a6fSDavid Howells extern void __exit afs_clean_up_permit_cache(void); 88000d3b7a4SDavid Howells 88100d3b7a4SDavid Howells /* 88208e0e7c8SDavid Howells * server.c 88308e0e7c8SDavid Howells */ 88408e0e7c8SDavid Howells extern spinlock_t afs_server_peer_lock; 88508e0e7c8SDavid Howells 886c435ee34SDavid Howells static inline struct afs_server *afs_get_server(struct afs_server *server) 887c435ee34SDavid Howells { 888c435ee34SDavid Howells atomic_inc(&server->usage); 889c435ee34SDavid Howells return server; 890c435ee34SDavid Howells } 89108e0e7c8SDavid Howells 892f044c884SDavid Howells extern struct afs_server *afs_find_server(struct afs_net *, 893f044c884SDavid Howells const struct sockaddr_rxrpc *); 894d2ddc776SDavid Howells extern struct afs_server *afs_find_server_by_uuid(struct afs_net *, const uuid_t *); 895d2ddc776SDavid Howells extern struct afs_server *afs_lookup_server(struct afs_cell *, struct key *, const uuid_t *); 8969ed900b1SDavid Howells extern void afs_put_server(struct afs_net *, struct afs_server *); 897d2ddc776SDavid Howells extern void afs_manage_servers(struct work_struct *); 898d2ddc776SDavid Howells extern void afs_servers_timer(struct timer_list *); 899f044c884SDavid Howells extern void __net_exit afs_purge_servers(struct afs_net *); 900d2ddc776SDavid Howells extern bool afs_probe_fileserver(struct afs_fs_cursor *); 901d2ddc776SDavid Howells extern bool afs_check_server_record(struct afs_fs_cursor *, struct afs_server *); 902d2ddc776SDavid Howells 903d2ddc776SDavid Howells /* 904d2ddc776SDavid Howells * server_list.c 905d2ddc776SDavid Howells */ 906d2ddc776SDavid Howells static inline struct afs_server_list *afs_get_serverlist(struct afs_server_list *slist) 907d2ddc776SDavid Howells { 908d2ddc776SDavid Howells refcount_inc(&slist->usage); 909d2ddc776SDavid Howells return slist; 910d2ddc776SDavid Howells } 911d2ddc776SDavid Howells 912d2ddc776SDavid Howells extern void afs_put_serverlist(struct afs_net *, struct afs_server_list *); 913d2ddc776SDavid Howells extern struct afs_server_list *afs_alloc_server_list(struct afs_cell *, struct key *, 914d2ddc776SDavid Howells struct afs_vldb_entry *, 915d2ddc776SDavid Howells u8); 916d2ddc776SDavid Howells extern bool afs_annotate_server_list(struct afs_server_list *, struct afs_server_list *); 91708e0e7c8SDavid Howells 91808e0e7c8SDavid Howells /* 91900d3b7a4SDavid Howells * super.c 92000d3b7a4SDavid Howells */ 921f044c884SDavid Howells extern int __init afs_fs_init(void); 922f044c884SDavid Howells extern void __exit afs_fs_exit(void); 92300d3b7a4SDavid Howells 92400d3b7a4SDavid Howells /* 92508e0e7c8SDavid Howells * vlclient.c 92608e0e7c8SDavid Howells */ 927d2ddc776SDavid Howells extern struct afs_vldb_entry *afs_vl_get_entry_by_name_u(struct afs_net *, 928d2ddc776SDavid Howells struct afs_addr_cursor *, 929d2ddc776SDavid Howells struct key *, const char *, int); 930d2ddc776SDavid Howells extern struct afs_addr_list *afs_vl_get_addrs_u(struct afs_net *, struct afs_addr_cursor *, 931d2ddc776SDavid Howells struct key *, const uuid_t *); 932bf99a53cSDavid Howells extern int afs_vl_get_capabilities(struct afs_net *, struct afs_addr_cursor *, struct key *); 933bf99a53cSDavid Howells extern struct afs_addr_list *afs_yfsvl_get_endpoints(struct afs_net *, struct afs_addr_cursor *, 934bf99a53cSDavid Howells struct key *, const uuid_t *); 93508e0e7c8SDavid Howells 93608e0e7c8SDavid Howells /* 93708e0e7c8SDavid Howells * volume.c 93808e0e7c8SDavid Howells */ 939d2ddc776SDavid Howells static inline struct afs_volume *__afs_get_volume(struct afs_volume *volume) 94049566f6fSDavid Howells { 94149566f6fSDavid Howells if (volume) 94249566f6fSDavid Howells atomic_inc(&volume->usage); 94349566f6fSDavid Howells return volume; 94449566f6fSDavid Howells } 94508e0e7c8SDavid Howells 946d2ddc776SDavid Howells extern struct afs_volume *afs_create_volume(struct afs_mount_params *); 947d2ddc776SDavid Howells extern void afs_activate_volume(struct afs_volume *); 948d2ddc776SDavid Howells extern void afs_deactivate_volume(struct afs_volume *); 9499ed900b1SDavid Howells extern void afs_put_volume(struct afs_cell *, struct afs_volume *); 950d2ddc776SDavid Howells extern int afs_check_volume_status(struct afs_volume *, struct key *); 95108e0e7c8SDavid Howells 95231143d5dSDavid Howells /* 95331143d5dSDavid Howells * write.c 95431143d5dSDavid Howells */ 95531143d5dSDavid Howells extern int afs_set_page_dirty(struct page *); 95615b4650eSNick Piggin extern int afs_write_begin(struct file *file, struct address_space *mapping, 95715b4650eSNick Piggin loff_t pos, unsigned len, unsigned flags, 95815b4650eSNick Piggin struct page **pagep, void **fsdata); 95915b4650eSNick Piggin extern int afs_write_end(struct file *file, struct address_space *mapping, 96015b4650eSNick Piggin loff_t pos, unsigned len, unsigned copied, 96115b4650eSNick Piggin struct page *page, void *fsdata); 96231143d5dSDavid Howells extern int afs_writepage(struct page *, struct writeback_control *); 96331143d5dSDavid Howells extern int afs_writepages(struct address_space *, struct writeback_control *); 96431143d5dSDavid Howells extern void afs_pages_written_back(struct afs_vnode *, struct afs_call *); 96550b5551dSAl Viro extern ssize_t afs_file_write(struct kiocb *, struct iov_iter *); 96658fed94dSDavid Howells extern int afs_flush(struct file *, fl_owner_t); 96702c24a82SJosef Bacik extern int afs_fsync(struct file *, loff_t, loff_t, int); 9681cf7a151SDavid Howells extern int afs_page_mkwrite(struct vm_fault *); 9694343d008SDavid Howells extern void afs_prune_wb_keys(struct afs_vnode *); 9704343d008SDavid Howells extern int afs_launder_page(struct page *); 97131143d5dSDavid Howells 972d3e3b7eaSDavid Howells /* 973d3e3b7eaSDavid Howells * xattr.c 974d3e3b7eaSDavid Howells */ 975d3e3b7eaSDavid Howells extern const struct xattr_handler *afs_xattr_handlers[]; 976d3e3b7eaSDavid Howells extern ssize_t afs_listxattr(struct dentry *, char *, size_t); 97731143d5dSDavid Howells 978d2ddc776SDavid Howells 979d2ddc776SDavid Howells /* 980d2ddc776SDavid Howells * Miscellaneous inline functions. 981d2ddc776SDavid Howells */ 982d2ddc776SDavid Howells static inline struct afs_vnode *AFS_FS_I(struct inode *inode) 983d2ddc776SDavid Howells { 984d2ddc776SDavid Howells return container_of(inode, struct afs_vnode, vfs_inode); 985d2ddc776SDavid Howells } 986d2ddc776SDavid Howells 987d2ddc776SDavid Howells static inline struct inode *AFS_VNODE_TO_I(struct afs_vnode *vnode) 988d2ddc776SDavid Howells { 989d2ddc776SDavid Howells return &vnode->vfs_inode; 990d2ddc776SDavid Howells } 991d2ddc776SDavid Howells 992d2ddc776SDavid Howells static inline void afs_vnode_commit_status(struct afs_fs_cursor *fc, 993d2ddc776SDavid Howells struct afs_vnode *vnode, 994d2ddc776SDavid Howells unsigned int cb_break) 995d2ddc776SDavid Howells { 996d2ddc776SDavid Howells if (fc->ac.error == 0) 997d2ddc776SDavid Howells afs_cache_permit(vnode, fc->key, cb_break); 998d2ddc776SDavid Howells } 999d2ddc776SDavid Howells 1000d2ddc776SDavid Howells static inline void afs_check_for_remote_deletion(struct afs_fs_cursor *fc, 1001d2ddc776SDavid Howells struct afs_vnode *vnode) 1002d2ddc776SDavid Howells { 1003d2ddc776SDavid Howells if (fc->ac.error == -ENOENT) { 1004d2ddc776SDavid Howells set_bit(AFS_VNODE_DELETED, &vnode->flags); 1005d2ddc776SDavid Howells afs_break_callback(vnode); 1006d2ddc776SDavid Howells } 1007d2ddc776SDavid Howells } 1008d2ddc776SDavid Howells 1009d2ddc776SDavid Howells 101008e0e7c8SDavid Howells /*****************************************************************************/ 101108e0e7c8SDavid Howells /* 101208e0e7c8SDavid Howells * debug tracing 101308e0e7c8SDavid Howells */ 101408e0e7c8SDavid Howells extern unsigned afs_debug; 101508e0e7c8SDavid Howells 101608e0e7c8SDavid Howells #define dbgprintk(FMT,...) \ 1017ad16df84SSven Schnelle printk("[%-6.6s] "FMT"\n", current->comm ,##__VA_ARGS__) 101808e0e7c8SDavid Howells 1019530b6412SHarvey Harrison #define kenter(FMT,...) dbgprintk("==> %s("FMT")",__func__ ,##__VA_ARGS__) 1020530b6412SHarvey Harrison #define kleave(FMT,...) dbgprintk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) 102108e0e7c8SDavid Howells #define kdebug(FMT,...) dbgprintk(" "FMT ,##__VA_ARGS__) 102208e0e7c8SDavid Howells 102308e0e7c8SDavid Howells 102408e0e7c8SDavid Howells #if defined(__KDEBUG) 102508e0e7c8SDavid Howells #define _enter(FMT,...) kenter(FMT,##__VA_ARGS__) 102608e0e7c8SDavid Howells #define _leave(FMT,...) kleave(FMT,##__VA_ARGS__) 102708e0e7c8SDavid Howells #define _debug(FMT,...) kdebug(FMT,##__VA_ARGS__) 102808e0e7c8SDavid Howells 102908e0e7c8SDavid Howells #elif defined(CONFIG_AFS_DEBUG) 103008e0e7c8SDavid Howells #define AFS_DEBUG_KENTER 0x01 103108e0e7c8SDavid Howells #define AFS_DEBUG_KLEAVE 0x02 103208e0e7c8SDavid Howells #define AFS_DEBUG_KDEBUG 0x04 103308e0e7c8SDavid Howells 103408e0e7c8SDavid Howells #define _enter(FMT,...) \ 103508e0e7c8SDavid Howells do { \ 103608e0e7c8SDavid Howells if (unlikely(afs_debug & AFS_DEBUG_KENTER)) \ 103708e0e7c8SDavid Howells kenter(FMT,##__VA_ARGS__); \ 103808e0e7c8SDavid Howells } while (0) 103908e0e7c8SDavid Howells 104008e0e7c8SDavid Howells #define _leave(FMT,...) \ 104108e0e7c8SDavid Howells do { \ 104208e0e7c8SDavid Howells if (unlikely(afs_debug & AFS_DEBUG_KLEAVE)) \ 104308e0e7c8SDavid Howells kleave(FMT,##__VA_ARGS__); \ 104408e0e7c8SDavid Howells } while (0) 104508e0e7c8SDavid Howells 104608e0e7c8SDavid Howells #define _debug(FMT,...) \ 104708e0e7c8SDavid Howells do { \ 104808e0e7c8SDavid Howells if (unlikely(afs_debug & AFS_DEBUG_KDEBUG)) \ 104908e0e7c8SDavid Howells kdebug(FMT,##__VA_ARGS__); \ 105008e0e7c8SDavid Howells } while (0) 105108e0e7c8SDavid Howells 105208e0e7c8SDavid Howells #else 105312fdff3fSDavid Howells #define _enter(FMT,...) no_printk("==> %s("FMT")",__func__ ,##__VA_ARGS__) 105412fdff3fSDavid Howells #define _leave(FMT,...) no_printk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) 105512fdff3fSDavid Howells #define _debug(FMT,...) no_printk(" "FMT ,##__VA_ARGS__) 105608e0e7c8SDavid Howells #endif 105708e0e7c8SDavid Howells 105808e0e7c8SDavid Howells /* 105908e0e7c8SDavid Howells * debug assertion checking 106008e0e7c8SDavid Howells */ 106108e0e7c8SDavid Howells #if 1 // defined(__KDEBUGALL) 106208e0e7c8SDavid Howells 106308e0e7c8SDavid Howells #define ASSERT(X) \ 106408e0e7c8SDavid Howells do { \ 106508e0e7c8SDavid Howells if (unlikely(!(X))) { \ 106608e0e7c8SDavid Howells printk(KERN_ERR "\n"); \ 106708e0e7c8SDavid Howells printk(KERN_ERR "AFS: Assertion failed\n"); \ 106808e0e7c8SDavid Howells BUG(); \ 106908e0e7c8SDavid Howells } \ 107008e0e7c8SDavid Howells } while(0) 107108e0e7c8SDavid Howells 107208e0e7c8SDavid Howells #define ASSERTCMP(X, OP, Y) \ 107308e0e7c8SDavid Howells do { \ 107408e0e7c8SDavid Howells if (unlikely(!((X) OP (Y)))) { \ 107508e0e7c8SDavid Howells printk(KERN_ERR "\n"); \ 107608e0e7c8SDavid Howells printk(KERN_ERR "AFS: Assertion failed\n"); \ 107708e0e7c8SDavid Howells printk(KERN_ERR "%lu " #OP " %lu is false\n", \ 107808e0e7c8SDavid Howells (unsigned long)(X), (unsigned long)(Y)); \ 107908e0e7c8SDavid Howells printk(KERN_ERR "0x%lx " #OP " 0x%lx is false\n", \ 108008e0e7c8SDavid Howells (unsigned long)(X), (unsigned long)(Y)); \ 108108e0e7c8SDavid Howells BUG(); \ 108208e0e7c8SDavid Howells } \ 108308e0e7c8SDavid Howells } while(0) 108408e0e7c8SDavid Howells 1085416351f2SDavid Howells #define ASSERTRANGE(L, OP1, N, OP2, H) \ 1086416351f2SDavid Howells do { \ 1087416351f2SDavid Howells if (unlikely(!((L) OP1 (N)) || !((N) OP2 (H)))) { \ 1088416351f2SDavid Howells printk(KERN_ERR "\n"); \ 1089416351f2SDavid Howells printk(KERN_ERR "AFS: Assertion failed\n"); \ 1090416351f2SDavid Howells printk(KERN_ERR "%lu "#OP1" %lu "#OP2" %lu is false\n", \ 1091416351f2SDavid Howells (unsigned long)(L), (unsigned long)(N), \ 1092416351f2SDavid Howells (unsigned long)(H)); \ 1093416351f2SDavid Howells printk(KERN_ERR "0x%lx "#OP1" 0x%lx "#OP2" 0x%lx is false\n", \ 1094416351f2SDavid Howells (unsigned long)(L), (unsigned long)(N), \ 1095416351f2SDavid Howells (unsigned long)(H)); \ 1096416351f2SDavid Howells BUG(); \ 1097416351f2SDavid Howells } \ 1098416351f2SDavid Howells } while(0) 1099416351f2SDavid Howells 110008e0e7c8SDavid Howells #define ASSERTIF(C, X) \ 110108e0e7c8SDavid Howells do { \ 110208e0e7c8SDavid Howells if (unlikely((C) && !(X))) { \ 110308e0e7c8SDavid Howells printk(KERN_ERR "\n"); \ 110408e0e7c8SDavid Howells printk(KERN_ERR "AFS: Assertion failed\n"); \ 110508e0e7c8SDavid Howells BUG(); \ 110608e0e7c8SDavid Howells } \ 110708e0e7c8SDavid Howells } while(0) 110808e0e7c8SDavid Howells 110908e0e7c8SDavid Howells #define ASSERTIFCMP(C, X, OP, Y) \ 111008e0e7c8SDavid Howells do { \ 111108e0e7c8SDavid Howells if (unlikely((C) && !((X) OP (Y)))) { \ 111208e0e7c8SDavid Howells printk(KERN_ERR "\n"); \ 111308e0e7c8SDavid Howells printk(KERN_ERR "AFS: Assertion failed\n"); \ 111408e0e7c8SDavid Howells printk(KERN_ERR "%lu " #OP " %lu is false\n", \ 111508e0e7c8SDavid Howells (unsigned long)(X), (unsigned long)(Y)); \ 111608e0e7c8SDavid Howells printk(KERN_ERR "0x%lx " #OP " 0x%lx is false\n", \ 111708e0e7c8SDavid Howells (unsigned long)(X), (unsigned long)(Y)); \ 111808e0e7c8SDavid Howells BUG(); \ 111908e0e7c8SDavid Howells } \ 112008e0e7c8SDavid Howells } while(0) 112108e0e7c8SDavid Howells 112208e0e7c8SDavid Howells #else 112308e0e7c8SDavid Howells 112408e0e7c8SDavid Howells #define ASSERT(X) \ 112508e0e7c8SDavid Howells do { \ 112608e0e7c8SDavid Howells } while(0) 112708e0e7c8SDavid Howells 112808e0e7c8SDavid Howells #define ASSERTCMP(X, OP, Y) \ 112908e0e7c8SDavid Howells do { \ 113008e0e7c8SDavid Howells } while(0) 113108e0e7c8SDavid Howells 1132416351f2SDavid Howells #define ASSERTRANGE(L, OP1, N, OP2, H) \ 1133416351f2SDavid Howells do { \ 1134416351f2SDavid Howells } while(0) 1135416351f2SDavid Howells 113608e0e7c8SDavid Howells #define ASSERTIF(C, X) \ 113708e0e7c8SDavid Howells do { \ 113808e0e7c8SDavid Howells } while(0) 113908e0e7c8SDavid Howells 114008e0e7c8SDavid Howells #define ASSERTIFCMP(C, X, OP, Y) \ 114108e0e7c8SDavid Howells do { \ 114208e0e7c8SDavid Howells } while(0) 114308e0e7c8SDavid Howells 114408e0e7c8SDavid Howells #endif /* __KDEBUGALL */ 1145