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> 240722f186SSouptick Joarder #include <linux/mm_types.h> 250a5143f2SDavid Howells #include <linux/dns_resolver.h> 26f044c884SDavid Howells #include <net/net_namespace.h> 275b86d4ffSDavid Howells #include <net/netns/generic.h> 285b86d4ffSDavid Howells #include <net/sock.h> 298324f0bcSDavid Howells #include <net/af_rxrpc.h> 3000c541eaSAndrew Morton 3108e0e7c8SDavid Howells #include "afs.h" 3208e0e7c8SDavid Howells #include "afs_vl.h" 3308e0e7c8SDavid Howells 3408e0e7c8SDavid Howells #define AFS_CELL_MAX_ADDRS 15 3508e0e7c8SDavid Howells 3631143d5dSDavid Howells struct pagevec; 3708e0e7c8SDavid Howells struct afs_call; 3808e0e7c8SDavid Howells 3900d3b7a4SDavid Howells struct afs_mount_params { 4000d3b7a4SDavid Howells bool rwpath; /* T if the parent should be considered R/W */ 4100d3b7a4SDavid Howells bool force; /* T to force cell type */ 42bec5eb61Swanglei bool autocell; /* T if set auto mount operation */ 434d673da1SDavid Howells bool dyn_root; /* T if dynamic root */ 4400d3b7a4SDavid Howells afs_voltype_t type; /* type of volume requested */ 4500d3b7a4SDavid Howells int volnamesz; /* size of volume name */ 4600d3b7a4SDavid Howells const char *volname; /* name of volume to mount */ 475b86d4ffSDavid Howells struct net *net_ns; /* Network namespace in effect */ 485b86d4ffSDavid Howells struct afs_net *net; /* the AFS net namespace stuff */ 4900d3b7a4SDavid Howells struct afs_cell *cell; /* cell in which to find volume */ 5000d3b7a4SDavid Howells struct afs_volume *volume; /* volume record */ 5100d3b7a4SDavid Howells struct key *key; /* key to use for secure mounting */ 5200d3b7a4SDavid Howells }; 5300d3b7a4SDavid Howells 54c435ee34SDavid Howells struct afs_iget_data { 55c435ee34SDavid Howells struct afs_fid fid; 56c435ee34SDavid Howells struct afs_volume *volume; /* volume on which resides */ 57c435ee34SDavid Howells }; 58c435ee34SDavid Howells 598e8d7f13SDavid Howells enum afs_call_state { 6098bf40cdSDavid Howells AFS_CALL_CL_REQUESTING, /* Client: Request is being sent */ 6198bf40cdSDavid Howells AFS_CALL_CL_AWAIT_REPLY, /* Client: Awaiting reply */ 6298bf40cdSDavid Howells AFS_CALL_CL_PROC_REPLY, /* Client: rxrpc call complete; processing reply */ 6398bf40cdSDavid Howells AFS_CALL_SV_AWAIT_OP_ID, /* Server: Awaiting op ID */ 6498bf40cdSDavid Howells AFS_CALL_SV_AWAIT_REQUEST, /* Server: Awaiting request data */ 6598bf40cdSDavid Howells AFS_CALL_SV_REPLYING, /* Server: Replying */ 6698bf40cdSDavid Howells AFS_CALL_SV_AWAIT_ACK, /* Server: Awaiting final ACK */ 678e8d7f13SDavid Howells AFS_CALL_COMPLETE, /* Completed or failed */ 688e8d7f13SDavid Howells }; 69f044c884SDavid Howells 7008e0e7c8SDavid Howells /* 718b2a464cSDavid Howells * List of server addresses. 728b2a464cSDavid Howells */ 738b2a464cSDavid Howells struct afs_addr_list { 748b2a464cSDavid Howells struct rcu_head rcu; /* Must be first */ 758b2a464cSDavid Howells refcount_t usage; 76d2ddc776SDavid Howells u32 version; /* Version */ 7768eb64c3SDavid Howells unsigned char max_addrs; 7868eb64c3SDavid Howells unsigned char nr_addrs; 7968eb64c3SDavid Howells unsigned char index; /* Address currently in use */ 8068eb64c3SDavid Howells unsigned char nr_ipv4; /* Number of IPv4 addresses */ 810a5143f2SDavid Howells enum dns_record_source source:8; 820a5143f2SDavid Howells enum dns_lookup_status status:8; 83bf99a53cSDavid Howells unsigned long probed; /* Mask of servers that have been probed */ 84bf99a53cSDavid Howells unsigned long yfs; /* Mask of servers that are YFS */ 858b2a464cSDavid Howells struct sockaddr_rxrpc addrs[]; 8668eb64c3SDavid Howells #define AFS_MAX_ADDRESSES ((unsigned int)(sizeof(unsigned long) * 8)) 878b2a464cSDavid Howells }; 888b2a464cSDavid Howells 898b2a464cSDavid Howells /* 9008e0e7c8SDavid Howells * a record of an in-progress RxRPC call 9108e0e7c8SDavid Howells */ 9208e0e7c8SDavid Howells struct afs_call { 9308e0e7c8SDavid Howells const struct afs_call_type *type; /* type of call */ 9408e0e7c8SDavid Howells wait_queue_head_t waitq; /* processes awaiting completion */ 95341f741fSDavid Howells struct work_struct async_work; /* async I/O processor */ 9608e0e7c8SDavid Howells struct work_struct work; /* actual work processor */ 9708e0e7c8SDavid Howells struct rxrpc_call *rxcall; /* RxRPC call handle */ 9808e0e7c8SDavid Howells struct key *key; /* security for this call */ 99f044c884SDavid Howells struct afs_net *net; /* The network namespace */ 100d0676a16SDavid Howells struct afs_server *cm_server; /* Server affected by incoming CM call */ 101d2ddc776SDavid Howells struct afs_cb_interest *cbi; /* Callback interest for server used */ 10208e0e7c8SDavid Howells void *request; /* request data (first part) */ 1034343d008SDavid Howells struct address_space *mapping; /* Pages being written from */ 10412bdcf33SDavid Howells struct iov_iter iter; /* Buffer iterator */ 10512bdcf33SDavid Howells struct iov_iter *_iter; /* Iterator currently in use */ 10612bdcf33SDavid Howells union { /* Convenience for ->iter */ 10712bdcf33SDavid Howells struct kvec kvec[1]; 10812bdcf33SDavid Howells struct bio_vec bvec[1]; 10912bdcf33SDavid Howells }; 11008e0e7c8SDavid Howells void *buffer; /* reply receive buffer */ 11197e3043aSDavid Howells void *reply[4]; /* Where to put the reply */ 11231143d5dSDavid Howells pgoff_t first; /* first page in mapping to deal with */ 11331143d5dSDavid Howells pgoff_t last; /* last page in mapping to deal with */ 114341f741fSDavid Howells atomic_t usage; 1158e8d7f13SDavid Howells enum afs_call_state state; 11698bf40cdSDavid Howells spinlock_t state_lock; 11708e0e7c8SDavid Howells int error; /* error code */ 118d001648eSDavid Howells u32 abort_code; /* Remote abort ID or 0 */ 11908e0e7c8SDavid Howells unsigned request_size; /* size of request data */ 12008e0e7c8SDavid Howells unsigned reply_max; /* maximum size of reply */ 12131143d5dSDavid Howells unsigned first_offset; /* offset into mapping[first] */ 122c435ee34SDavid Howells unsigned int cb_break; /* cb_break + cb_s_break before the call */ 123bcd89270SMarc Dionne union { 12431143d5dSDavid Howells unsigned last_to; /* amount of mapping[last] */ 125bcd89270SMarc Dionne unsigned count2; /* count used in unmarshalling */ 126bcd89270SMarc Dionne }; 12708e0e7c8SDavid Howells unsigned char unmarshall; /* unmarshalling phase */ 12808e0e7c8SDavid Howells bool incoming; /* T if incoming call */ 12931143d5dSDavid Howells bool send_pages; /* T if data from mapping should be sent */ 130d001648eSDavid Howells bool need_attention; /* T if RxRPC poked us */ 13156ff9c83SDavid Howells bool async; /* T if asynchronous */ 13233cd7f2bSDavid Howells bool ret_reply0; /* T if should return reply[0] on success */ 133a68f4a27SDavid Howells bool upgrade; /* T to request service upgrade */ 13412d8e95aSDavid Howells bool want_reply_time; /* T if want reply_time */ 135bf99a53cSDavid Howells u16 service_id; /* Actual service ID (after upgrade) */ 136a25e21f0SDavid Howells unsigned int debug_id; /* Trace ID */ 13750a2c953SDavid Howells u32 operation_ID; /* operation ID for an incoming call */ 13808e0e7c8SDavid Howells u32 count; /* count for use in unmarshalling */ 13912bdcf33SDavid Howells union { /* place to extract temporary data */ 14012bdcf33SDavid Howells struct { 14112bdcf33SDavid Howells __be32 tmp_u; 14212bdcf33SDavid Howells __be32 tmp; 14312bdcf33SDavid Howells } __attribute__((packed)); 14412bdcf33SDavid Howells __be64 tmp64; 14512bdcf33SDavid Howells }; 1460c3a5ac2SDavid Howells afs_dataversion_t expected_version; /* Updated version expected from store */ 1470c3a5ac2SDavid Howells afs_dataversion_t expected_version_2; /* 2nd updated version expected from store */ 14812d8e95aSDavid Howells ktime_t reply_time; /* Time of first reply packet */ 14908e0e7c8SDavid Howells }; 15008e0e7c8SDavid Howells 15108e0e7c8SDavid Howells struct afs_call_type { 15200d3b7a4SDavid Howells const char *name; 153025db80cSDavid Howells unsigned int op; /* Really enum afs_fs_operation */ 15400d3b7a4SDavid Howells 15508e0e7c8SDavid Howells /* deliver request or reply data to an call 15608e0e7c8SDavid Howells * - returning an error will cause the call to be aborted 15708e0e7c8SDavid Howells */ 158d001648eSDavid Howells int (*deliver)(struct afs_call *call); 15908e0e7c8SDavid Howells 16008e0e7c8SDavid Howells /* clean up a call */ 16108e0e7c8SDavid Howells void (*destructor)(struct afs_call *call); 162341f741fSDavid Howells 163341f741fSDavid Howells /* Work function */ 164341f741fSDavid Howells void (*work)(struct work_struct *work); 16508e0e7c8SDavid Howells }; 16608e0e7c8SDavid Howells 16708e0e7c8SDavid Howells /* 1684343d008SDavid Howells * Key available for writeback on a file. 1694343d008SDavid Howells */ 1704343d008SDavid Howells struct afs_wb_key { 1714343d008SDavid Howells refcount_t usage; 1724343d008SDavid Howells struct key *key; 1734343d008SDavid Howells struct list_head vnode_link; /* Link in vnode->wb_keys */ 1744343d008SDavid Howells }; 1754343d008SDavid Howells 1764343d008SDavid Howells /* 177215804a9SDavid Howells * AFS open file information record. Pointed to by file->private_data. 178215804a9SDavid Howells */ 179215804a9SDavid Howells struct afs_file { 180215804a9SDavid Howells struct key *key; /* The key this file was opened with */ 1814343d008SDavid Howells struct afs_wb_key *wb; /* Writeback key record for this file */ 182215804a9SDavid Howells }; 183215804a9SDavid Howells 184215804a9SDavid Howells static inline struct key *afs_file_key(struct file *file) 185215804a9SDavid Howells { 186215804a9SDavid Howells struct afs_file *af = file->private_data; 187215804a9SDavid Howells 188215804a9SDavid Howells return af->key; 189215804a9SDavid Howells } 190215804a9SDavid Howells 191215804a9SDavid Howells /* 192196ee9cdSDavid Howells * Record of an outstanding read operation on a vnode. 193196ee9cdSDavid Howells */ 194196ee9cdSDavid Howells struct afs_read { 195196ee9cdSDavid Howells loff_t pos; /* Where to start reading */ 196e8e581a8SDavid Howells loff_t len; /* How much we're asking for */ 197196ee9cdSDavid Howells loff_t actual_len; /* How much we're actually getting */ 1986a0e3999SDavid Howells loff_t remain; /* Amount remaining */ 199f3ddee8dSDavid Howells loff_t file_size; /* File size returned by server */ 200f3ddee8dSDavid Howells afs_dataversion_t data_version; /* Version number returned by server */ 201f3ddee8dSDavid Howells refcount_t usage; 202196ee9cdSDavid Howells unsigned int index; /* Which page we're reading into */ 203196ee9cdSDavid Howells unsigned int nr_pages; 20412bdcf33SDavid Howells unsigned int offset; /* offset into current page */ 205196ee9cdSDavid Howells void (*page_done)(struct afs_call *, struct afs_read *); 206f3ddee8dSDavid Howells struct page **pages; 207f3ddee8dSDavid Howells struct page *array[]; 208196ee9cdSDavid Howells }; 209196ee9cdSDavid Howells 210196ee9cdSDavid Howells /* 21108e0e7c8SDavid Howells * AFS superblock private data 21208e0e7c8SDavid Howells * - there's one superblock per volume 21308e0e7c8SDavid Howells */ 21408e0e7c8SDavid Howells struct afs_super_info { 2155b86d4ffSDavid Howells struct net *net_ns; /* Network namespace */ 21649566f6fSDavid Howells struct afs_cell *cell; /* The cell in which the volume resides */ 21708e0e7c8SDavid Howells struct afs_volume *volume; /* volume record */ 2184d673da1SDavid Howells bool dyn_root; /* True if dynamic root */ 21908e0e7c8SDavid Howells }; 22008e0e7c8SDavid Howells 22108e0e7c8SDavid Howells static inline struct afs_super_info *AFS_FS_S(struct super_block *sb) 22208e0e7c8SDavid Howells { 22308e0e7c8SDavid Howells return sb->s_fs_info; 22408e0e7c8SDavid Howells } 22508e0e7c8SDavid Howells 22608e0e7c8SDavid Howells extern struct file_system_type afs_fs_type; 22708e0e7c8SDavid Howells 22808e0e7c8SDavid Howells /* 2296f8880d8SDavid Howells * Set of substitutes for @sys. 2306f8880d8SDavid Howells */ 2316f8880d8SDavid Howells struct afs_sysnames { 2326f8880d8SDavid Howells #define AFS_NR_SYSNAME 16 2336f8880d8SDavid Howells char *subs[AFS_NR_SYSNAME]; 2346f8880d8SDavid Howells refcount_t usage; 2356f8880d8SDavid Howells unsigned short nr; 2366f8880d8SDavid Howells char blank[1]; 2376f8880d8SDavid Howells }; 2386f8880d8SDavid Howells 2396f8880d8SDavid Howells /* 240f044c884SDavid Howells * AFS network namespace record. 241f044c884SDavid Howells */ 242f044c884SDavid Howells struct afs_net { 2435b86d4ffSDavid Howells struct net *net; /* Backpointer to the owning net namespace */ 244f044c884SDavid Howells struct afs_uuid uuid; 245f044c884SDavid Howells bool live; /* F if this namespace is being removed */ 246f044c884SDavid Howells 247f044c884SDavid Howells /* AF_RXRPC I/O stuff */ 248f044c884SDavid Howells struct socket *socket; 249f044c884SDavid Howells struct afs_call *spare_incoming_call; 250f044c884SDavid Howells struct work_struct charge_preallocation_work; 251f044c884SDavid Howells struct mutex socket_mutex; 252f044c884SDavid Howells atomic_t nr_outstanding_calls; 253f044c884SDavid Howells atomic_t nr_superblocks; 254f044c884SDavid Howells 255f044c884SDavid Howells /* Cell database */ 256989782dcSDavid Howells struct rb_root cells; 2571588def9SDavid Howells struct afs_cell __rcu *ws_cell; 258989782dcSDavid Howells struct work_struct cells_manager; 259989782dcSDavid Howells struct timer_list cells_timer; 260989782dcSDavid Howells atomic_t cells_outstanding; 261989782dcSDavid Howells seqlock_t cells_lock; 262f044c884SDavid Howells 2630da0b7fdSDavid Howells struct mutex proc_cells_lock; 2646b3944e4SDavid Howells struct hlist_head proc_cells; 265f044c884SDavid Howells 266d2ddc776SDavid Howells /* Known servers. Theoretically each fileserver can only be in one 267d2ddc776SDavid Howells * cell, but in practice, people create aliases and subsets and there's 268d2ddc776SDavid Howells * no easy way to distinguish them. 269d2ddc776SDavid Howells */ 270d2ddc776SDavid Howells seqlock_t fs_lock; /* For fs_servers */ 271d2ddc776SDavid Howells struct rb_root fs_servers; /* afs_server (by server UUID or address) */ 272d2ddc776SDavid Howells struct list_head fs_updates; /* afs_server (by update_at) */ 273d2ddc776SDavid Howells struct hlist_head fs_proc; /* procfs servers list */ 274d2ddc776SDavid Howells 275d2ddc776SDavid Howells struct hlist_head fs_addresses4; /* afs_server (by lowest IPv4 addr) */ 276d2ddc776SDavid Howells struct hlist_head fs_addresses6; /* afs_server (by lowest IPv6 addr) */ 277d2ddc776SDavid Howells seqlock_t fs_addr_lock; /* For fs_addresses[46] */ 278d2ddc776SDavid Howells 279d2ddc776SDavid Howells struct work_struct fs_manager; 280d2ddc776SDavid Howells struct timer_list fs_timer; 281d2ddc776SDavid Howells atomic_t servers_outstanding; 282f044c884SDavid Howells 283f044c884SDavid Howells /* File locking renewal management */ 284f044c884SDavid Howells struct mutex lock_manager_mutex; 285f044c884SDavid Howells 286f044c884SDavid Howells /* Misc */ 2870da0b7fdSDavid Howells struct super_block *dynroot_sb; /* Dynamic root mount superblock */ 288f044c884SDavid Howells struct proc_dir_entry *proc_afs; /* /proc/net/afs directory */ 2896f8880d8SDavid Howells struct afs_sysnames *sysnames; 2906f8880d8SDavid Howells rwlock_t sysnames_lock; 291d55b4da4SDavid Howells 292d55b4da4SDavid Howells /* Statistics counters */ 293d55b4da4SDavid Howells atomic_t n_lookup; /* Number of lookups done */ 294d55b4da4SDavid Howells atomic_t n_reval; /* Number of dentries needing revalidation */ 295d55b4da4SDavid Howells atomic_t n_inval; /* Number of invalidations by the server */ 296f3ddee8dSDavid Howells atomic_t n_relpg; /* Number of invalidations by releasepage */ 297d55b4da4SDavid Howells atomic_t n_read_dir; /* Number of directory pages read */ 29863a4681fSDavid Howells atomic_t n_dir_cr; /* Number of directory entry creation edits */ 29963a4681fSDavid Howells atomic_t n_dir_rm; /* Number of directory entry removal edits */ 30076a5cb6fSDavid Howells atomic_t n_stores; /* Number of store ops */ 30176a5cb6fSDavid Howells atomic_long_t n_store_bytes; /* Number of bytes stored */ 30276a5cb6fSDavid Howells atomic_long_t n_fetch_bytes; /* Number of bytes fetched */ 30376a5cb6fSDavid Howells atomic_t n_fetches; /* Number of data fetch ops */ 304f044c884SDavid Howells }; 305f044c884SDavid Howells 3066f8880d8SDavid Howells extern const char afs_init_sysname[]; 307f044c884SDavid Howells 308989782dcSDavid Howells enum afs_cell_state { 309989782dcSDavid Howells AFS_CELL_UNSET, 310989782dcSDavid Howells AFS_CELL_ACTIVATING, 311989782dcSDavid Howells AFS_CELL_ACTIVE, 312989782dcSDavid Howells AFS_CELL_DEACTIVATING, 313989782dcSDavid Howells AFS_CELL_INACTIVE, 314989782dcSDavid Howells AFS_CELL_FAILED, 315989782dcSDavid Howells }; 316989782dcSDavid Howells 317f044c884SDavid Howells /* 318d2ddc776SDavid Howells * AFS cell record. 319d2ddc776SDavid Howells * 320d2ddc776SDavid Howells * This is a tricky concept to get right as it is possible to create aliases 321d2ddc776SDavid Howells * simply by pointing AFSDB/SRV records for two names at the same set of VL 322d2ddc776SDavid Howells * servers; it is also possible to do things like setting up two sets of VL 323d2ddc776SDavid Howells * servers, one of which provides a superset of the volumes provided by the 324d2ddc776SDavid Howells * other (for internal/external division, for example). 325d2ddc776SDavid Howells * 326d2ddc776SDavid Howells * Cells only exist in the sense that (a) a cell's name maps to a set of VL 327d2ddc776SDavid Howells * servers and (b) a cell's name is used by the client to select the key to use 328d2ddc776SDavid Howells * for authentication and encryption. The cell name is not typically used in 329d2ddc776SDavid Howells * the protocol. 330d2ddc776SDavid Howells * 331d2ddc776SDavid Howells * There is no easy way to determine if two cells are aliases or one is a 332d2ddc776SDavid Howells * subset of another. 33308e0e7c8SDavid Howells */ 33408e0e7c8SDavid Howells struct afs_cell { 335989782dcSDavid Howells union { 336989782dcSDavid Howells struct rcu_head rcu; 337989782dcSDavid Howells struct rb_node net_node; /* Node in net->cells */ 338989782dcSDavid Howells }; 339989782dcSDavid Howells struct afs_net *net; 34000d3b7a4SDavid Howells struct key *anonymous_key; /* anonymous user key for this cell */ 341989782dcSDavid Howells struct work_struct manager; /* Manager for init/deinit/dns */ 3426b3944e4SDavid Howells struct hlist_node proc_link; /* /proc cell list link */ 3439b3f26c9SDavid Howells #ifdef CONFIG_AFS_FSCACHE 3449b3f26c9SDavid Howells struct fscache_cookie *cache; /* caching cookie */ 3451da177e4SLinus Torvalds #endif 346989782dcSDavid Howells time64_t dns_expiry; /* Time AFSDB/SRV record expires */ 347989782dcSDavid Howells time64_t last_inactive; /* Time of last drop of usage count */ 348989782dcSDavid Howells atomic_t usage; 349989782dcSDavid Howells unsigned long flags; 350989782dcSDavid Howells #define AFS_CELL_FL_NOT_READY 0 /* The cell record is not ready for use */ 351989782dcSDavid Howells #define AFS_CELL_FL_NO_GC 1 /* The cell was added manually, don't auto-gc */ 352989782dcSDavid Howells #define AFS_CELL_FL_NOT_FOUND 2 /* Permanent DNS error */ 353989782dcSDavid Howells #define AFS_CELL_FL_DNS_FAIL 3 /* Failed to access DNS */ 3548b2a464cSDavid Howells #define AFS_CELL_FL_NO_LOOKUP_YET 4 /* Not completed first DNS lookup yet */ 355989782dcSDavid Howells enum afs_cell_state state; 356989782dcSDavid Howells short error; 357989782dcSDavid Howells 358d2ddc776SDavid Howells /* Active fileserver interaction state. */ 359d2ddc776SDavid Howells struct list_head proc_volumes; /* procfs volume list */ 360d2ddc776SDavid Howells rwlock_t proc_lock; 361989782dcSDavid Howells 362d2ddc776SDavid Howells /* VL server list. */ 3630a5143f2SDavid Howells rwlock_t vl_servers_lock; /* Lock on vl_servers */ 3640a5143f2SDavid Howells struct afs_vlserver_list __rcu *vl_servers; 3650a5143f2SDavid Howells 366989782dcSDavid Howells u8 name_len; /* Length of name */ 367989782dcSDavid Howells char name[64 + 1]; /* Cell name, case-flattened and NUL-padded */ 36808e0e7c8SDavid Howells }; 36908e0e7c8SDavid Howells 37008e0e7c8SDavid Howells /* 3710a5143f2SDavid Howells * Volume Location server record. 3720a5143f2SDavid Howells */ 3730a5143f2SDavid Howells struct afs_vlserver { 3740a5143f2SDavid Howells struct rcu_head rcu; 3750a5143f2SDavid Howells struct afs_addr_list __rcu *addresses; /* List of addresses for this VL server */ 3760a5143f2SDavid Howells unsigned long flags; 3770a5143f2SDavid Howells #define AFS_VLSERVER_FL_PROBED 0 /* The VL server has been probed */ 3780a5143f2SDavid Howells #define AFS_VLSERVER_FL_PROBING 1 /* VL server is being probed */ 3790a5143f2SDavid Howells rwlock_t lock; /* Lock on addresses */ 3800a5143f2SDavid Howells atomic_t usage; 3810a5143f2SDavid Howells u16 name_len; /* Length of name */ 3820a5143f2SDavid Howells u16 port; 3830a5143f2SDavid Howells char name[]; /* Server name, case-flattened */ 3840a5143f2SDavid Howells }; 3850a5143f2SDavid Howells 3860a5143f2SDavid Howells /* 3870a5143f2SDavid Howells * Weighted list of Volume Location servers. 3880a5143f2SDavid Howells */ 3890a5143f2SDavid Howells struct afs_vlserver_entry { 3900a5143f2SDavid Howells u16 priority; /* Preference (as SRV) */ 3910a5143f2SDavid Howells u16 weight; /* Weight (as SRV) */ 3920a5143f2SDavid Howells enum dns_record_source source:8; 3930a5143f2SDavid Howells enum dns_lookup_status status:8; 3940a5143f2SDavid Howells struct afs_vlserver *server; 3950a5143f2SDavid Howells }; 3960a5143f2SDavid Howells 3970a5143f2SDavid Howells struct afs_vlserver_list { 3980a5143f2SDavid Howells struct rcu_head rcu; 3990a5143f2SDavid Howells atomic_t usage; 4000a5143f2SDavid Howells u8 nr_servers; 4010a5143f2SDavid Howells u8 index; /* Server currently in use */ 4020a5143f2SDavid Howells enum dns_record_source source:8; 4030a5143f2SDavid Howells enum dns_lookup_status status:8; 4040a5143f2SDavid Howells rwlock_t lock; 4050a5143f2SDavid Howells struct afs_vlserver_entry servers[]; 4060a5143f2SDavid Howells }; 4070a5143f2SDavid Howells 4080a5143f2SDavid Howells /* 409d2ddc776SDavid Howells * Cached VLDB entry. 410d2ddc776SDavid Howells * 411d2ddc776SDavid Howells * This is pointed to by cell->vldb_entries, indexed by name. 41208e0e7c8SDavid Howells */ 413d2ddc776SDavid Howells struct afs_vldb_entry { 414d2ddc776SDavid Howells afs_volid_t vid[3]; /* Volume IDs for R/W, R/O and Bak volumes */ 41500d3b7a4SDavid Howells 416d2ddc776SDavid Howells unsigned long flags; 417d2ddc776SDavid Howells #define AFS_VLDB_HAS_RW 0 /* - R/W volume exists */ 418d2ddc776SDavid Howells #define AFS_VLDB_HAS_RO 1 /* - R/O volume exists */ 419d2ddc776SDavid Howells #define AFS_VLDB_HAS_BAK 2 /* - Backup volume exists */ 420d2ddc776SDavid Howells #define AFS_VLDB_QUERY_VALID 3 /* - Record is valid */ 421d2ddc776SDavid Howells #define AFS_VLDB_QUERY_ERROR 4 /* - VL server returned error */ 422d2ddc776SDavid Howells 423d2ddc776SDavid Howells uuid_t fs_server[AFS_NMAXNSERVERS]; 424d2ddc776SDavid Howells u8 fs_mask[AFS_NMAXNSERVERS]; 42508e0e7c8SDavid Howells #define AFS_VOL_VTM_RW 0x01 /* R/W version of the volume is available (on this server) */ 42608e0e7c8SDavid Howells #define AFS_VOL_VTM_RO 0x02 /* R/O version of the volume is available (on this server) */ 42708e0e7c8SDavid Howells #define AFS_VOL_VTM_BAK 0x04 /* backup version of the volume is available (on this server) */ 428d2ddc776SDavid Howells short error; 429d2ddc776SDavid Howells u8 nr_servers; /* Number of server records */ 430d2ddc776SDavid Howells u8 name_len; 431d2ddc776SDavid Howells u8 name[AFS_MAXVOLNAME + 1]; /* NUL-padded volume name */ 43208e0e7c8SDavid Howells }; 43308e0e7c8SDavid Howells 43408e0e7c8SDavid Howells /* 435d2ddc776SDavid Howells * Record of fileserver with which we're actively communicating. 43608e0e7c8SDavid Howells */ 43708e0e7c8SDavid Howells struct afs_server { 438d2ddc776SDavid Howells struct rcu_head rcu; 439d2ddc776SDavid Howells union { 440d2ddc776SDavid Howells uuid_t uuid; /* Server ID */ 441d2ddc776SDavid Howells struct afs_uuid _uuid; 442d2ddc776SDavid Howells }; 443c435ee34SDavid Howells 444d2ddc776SDavid Howells struct afs_addr_list __rcu *addresses; 445d2ddc776SDavid Howells struct rb_node uuid_rb; /* Link in net->servers */ 446d2ddc776SDavid Howells struct hlist_node addr4_link; /* Link in net->fs_addresses4 */ 447d2ddc776SDavid Howells struct hlist_node addr6_link; /* Link in net->fs_addresses6 */ 448d2ddc776SDavid Howells struct hlist_node proc_link; /* Link in net->fs_proc */ 449d2ddc776SDavid Howells struct afs_server *gc_next; /* Next server in manager's list */ 450d2ddc776SDavid Howells time64_t put_time; /* Time at which last put */ 451d2ddc776SDavid Howells time64_t update_at; /* Time at which to next update the record */ 452c435ee34SDavid Howells unsigned long flags; 453d2ddc776SDavid Howells #define AFS_SERVER_FL_NEW 0 /* New server, don't inc cb_s_break */ 454d2ddc776SDavid Howells #define AFS_SERVER_FL_NOT_READY 1 /* The record is not ready for use */ 455d2ddc776SDavid Howells #define AFS_SERVER_FL_NOT_FOUND 2 /* VL server says no such server */ 456d2ddc776SDavid Howells #define AFS_SERVER_FL_VL_FAIL 3 /* Failed to access VL server */ 457d2ddc776SDavid Howells #define AFS_SERVER_FL_UPDATING 4 458d2ddc776SDavid Howells #define AFS_SERVER_FL_PROBED 5 /* The fileserver has been probed */ 459d2ddc776SDavid Howells #define AFS_SERVER_FL_PROBING 6 /* Fileserver is being probed */ 4605cf9dd55SDavid Howells #define AFS_SERVER_FL_NO_IBULK 7 /* Fileserver doesn't support FS.InlineBulkStatus */ 461f2686b09SDavid Howells #define AFS_SERVER_FL_MAY_HAVE_CB 8 /* May have callbacks on this fileserver */ 46230062bd1SDavid Howells #define AFS_SERVER_FL_IS_YFS 9 /* Server is YFS not AFS */ 46330062bd1SDavid Howells #define AFS_SERVER_FL_NO_RM2 10 /* Fileserver doesn't support YFS.RemoveFile2 */ 464d2ddc776SDavid Howells atomic_t usage; 465d2ddc776SDavid Howells u32 addr_version; /* Address list version */ 46608e0e7c8SDavid Howells 46708e0e7c8SDavid Howells /* file service access */ 468d2ddc776SDavid Howells rwlock_t fs_lock; /* access lock */ 46908e0e7c8SDavid Howells 47008e0e7c8SDavid Howells /* callback promise management */ 47147ea0f2eSDavid Howells struct hlist_head cb_volumes; /* List of volume interests on this server */ 472c435ee34SDavid Howells unsigned cb_s_break; /* Break-everything counter. */ 473c435ee34SDavid Howells rwlock_t cb_break_lock; /* Volume finding lock */ 474c435ee34SDavid Howells }; 475c435ee34SDavid Howells 476c435ee34SDavid Howells /* 47747ea0f2eSDavid Howells * Volume collation in the server's callback interest list. 47847ea0f2eSDavid Howells */ 47947ea0f2eSDavid Howells struct afs_vol_interest { 48047ea0f2eSDavid Howells struct hlist_node srv_link; /* Link in server->cb_volumes */ 48147ea0f2eSDavid Howells struct hlist_head cb_interests; /* List of callback interests on the server */ 48247ea0f2eSDavid Howells afs_volid_t vid; /* Volume ID to match */ 48347ea0f2eSDavid Howells unsigned int usage; 48447ea0f2eSDavid Howells }; 48547ea0f2eSDavid Howells 48647ea0f2eSDavid Howells /* 487c435ee34SDavid Howells * Interest by a superblock on a server. 488c435ee34SDavid Howells */ 489c435ee34SDavid Howells struct afs_cb_interest { 49047ea0f2eSDavid Howells struct hlist_node cb_vlink; /* Link in vol_interest->cb_interests */ 49147ea0f2eSDavid Howells struct afs_vol_interest *vol_interest; 492c435ee34SDavid Howells struct afs_server *server; /* Server on which this interest resides */ 493c435ee34SDavid Howells struct super_block *sb; /* Superblock on which inodes reside */ 494c435ee34SDavid Howells afs_volid_t vid; /* Volume ID to match */ 495c435ee34SDavid Howells refcount_t usage; 49608e0e7c8SDavid Howells }; 49708e0e7c8SDavid Howells 49808e0e7c8SDavid Howells /* 499d2ddc776SDavid Howells * Replaceable server list. 50008e0e7c8SDavid Howells */ 501d2ddc776SDavid Howells struct afs_server_entry { 502d2ddc776SDavid Howells struct afs_server *server; 503d2ddc776SDavid Howells struct afs_cb_interest *cb_interest; 504d2ddc776SDavid Howells }; 505d2ddc776SDavid Howells 506d2ddc776SDavid Howells struct afs_server_list { 507d2ddc776SDavid Howells refcount_t usage; 508d2ddc776SDavid Howells unsigned short nr_servers; 509d2ddc776SDavid Howells unsigned short index; /* Server currently in use */ 510d2ddc776SDavid Howells unsigned short vnovol_mask; /* Servers to be skipped due to VNOVOL */ 511d2ddc776SDavid Howells unsigned int seq; /* Set to ->servers_seq when installed */ 512d4a96becSDavid Howells rwlock_t lock; 513d2ddc776SDavid Howells struct afs_server_entry servers[]; 51408e0e7c8SDavid Howells }; 51508e0e7c8SDavid Howells 51608e0e7c8SDavid Howells /* 517d2ddc776SDavid Howells * Live AFS volume management. 51808e0e7c8SDavid Howells */ 519d2ddc776SDavid Howells struct afs_volume { 520d2ddc776SDavid Howells afs_volid_t vid; /* volume ID */ 521d2ddc776SDavid Howells atomic_t usage; 522d2ddc776SDavid Howells time64_t update_at; /* Time at which to next update */ 523d2ddc776SDavid Howells struct afs_cell *cell; /* Cell to which belongs (pins ref) */ 524d2ddc776SDavid Howells struct list_head proc_link; /* Link in cell->vl_proc */ 525d2ddc776SDavid Howells unsigned long flags; 526d2ddc776SDavid Howells #define AFS_VOLUME_NEEDS_UPDATE 0 /* - T if an update needs performing */ 527d2ddc776SDavid Howells #define AFS_VOLUME_UPDATING 1 /* - T if an update is in progress */ 528d2ddc776SDavid Howells #define AFS_VOLUME_WAIT 2 /* - T if users must wait for update */ 529d2ddc776SDavid Howells #define AFS_VOLUME_DELETED 3 /* - T if volume appears deleted */ 530d2ddc776SDavid Howells #define AFS_VOLUME_OFFLINE 4 /* - T if volume offline notice given */ 531d2ddc776SDavid Howells #define AFS_VOLUME_BUSY 5 /* - T if volume busy notice given */ 532d2ddc776SDavid Howells #ifdef CONFIG_AFS_FSCACHE 533d2ddc776SDavid Howells struct fscache_cookie *cache; /* caching cookie */ 534d2ddc776SDavid Howells #endif 535d2ddc776SDavid Howells struct afs_server_list *servers; /* List of servers on which volume resides */ 536d2ddc776SDavid Howells rwlock_t servers_lock; /* Lock for ->servers */ 537d2ddc776SDavid Howells unsigned int servers_seq; /* Incremented each time ->servers changes */ 538d2ddc776SDavid Howells 53968251f0aSDavid Howells unsigned cb_v_break; /* Break-everything counter. */ 54068251f0aSDavid Howells rwlock_t cb_break_lock; 54168251f0aSDavid Howells 542d2ddc776SDavid Howells afs_voltype_t type; /* type of volume */ 543d2ddc776SDavid Howells short error; 544d2ddc776SDavid Howells char type_force; /* force volume type (suppress R/O -> R/W) */ 545d2ddc776SDavid Howells u8 name_len; 546d2ddc776SDavid Howells u8 name[AFS_MAXVOLNAME + 1]; /* NUL-padded volume name */ 54708e0e7c8SDavid Howells }; 54808e0e7c8SDavid Howells 5490fafdc9fSDavid Howells enum afs_lock_state { 5500fafdc9fSDavid Howells AFS_VNODE_LOCK_NONE, /* The vnode has no lock on the server */ 5510fafdc9fSDavid Howells AFS_VNODE_LOCK_WAITING_FOR_CB, /* We're waiting for the server to break the callback */ 5520fafdc9fSDavid Howells AFS_VNODE_LOCK_SETTING, /* We're asking the server for a lock */ 5530fafdc9fSDavid Howells AFS_VNODE_LOCK_GRANTED, /* We have a lock on the server */ 5540fafdc9fSDavid Howells AFS_VNODE_LOCK_EXTENDING, /* We're extending a lock on the server */ 5550fafdc9fSDavid Howells AFS_VNODE_LOCK_NEED_UNLOCK, /* We need to unlock on the server */ 5560fafdc9fSDavid Howells AFS_VNODE_LOCK_UNLOCKING, /* We're telling the server to unlock */ 5570fafdc9fSDavid Howells }; 5580fafdc9fSDavid Howells 55908e0e7c8SDavid Howells /* 560f8de483eSDavid Howells * AFS inode private data. 561f8de483eSDavid Howells * 562f8de483eSDavid Howells * Note that afs_alloc_inode() *must* reset anything that could incorrectly 563f8de483eSDavid Howells * leak from one inode to another. 56408e0e7c8SDavid Howells */ 56508e0e7c8SDavid Howells struct afs_vnode { 56608e0e7c8SDavid Howells struct inode vfs_inode; /* the VFS's inode record */ 56708e0e7c8SDavid Howells 56808e0e7c8SDavid Howells struct afs_volume *volume; /* volume on which vnode resides */ 56908e0e7c8SDavid Howells struct afs_fid fid; /* the file identifier for this inode */ 57008e0e7c8SDavid Howells struct afs_file_status status; /* AFS status info for this file */ 571a4ff7401SDavid Howells afs_dataversion_t invalid_before; /* Child dentries are invalid before this */ 5729b3f26c9SDavid Howells #ifdef CONFIG_AFS_FSCACHE 5739b3f26c9SDavid Howells struct fscache_cookie *cache; /* caching cookie */ 57408e0e7c8SDavid Howells #endif 575fe342cf7SDavid Howells struct afs_permits __rcu *permit_cache; /* cache of permits so far obtained */ 576d2ddc776SDavid Howells struct mutex io_lock; /* Lock for serialising I/O on this mutex */ 577b61f7dcfSDavid Howells struct rw_semaphore validate_lock; /* lock for validating this vnode */ 5784343d008SDavid Howells spinlock_t wb_lock; /* lock for wb_keys */ 57908e0e7c8SDavid Howells spinlock_t lock; /* waitqueue/flags lock */ 58008e0e7c8SDavid Howells unsigned long flags; 581c435ee34SDavid Howells #define AFS_VNODE_CB_PROMISED 0 /* Set if vnode has a callback promise */ 582260a9803SDavid Howells #define AFS_VNODE_UNSET 1 /* set if vnode attributes not yet set */ 583f3ddee8dSDavid Howells #define AFS_VNODE_DIR_VALID 2 /* Set if dir contents are valid */ 58408e0e7c8SDavid Howells #define AFS_VNODE_ZAP_DATA 3 /* set if vnode's data should be invalidated */ 58508e0e7c8SDavid Howells #define AFS_VNODE_DELETED 4 /* set if vnode deleted on server */ 58608e0e7c8SDavid Howells #define AFS_VNODE_MOUNTPOINT 5 /* set if vnode is a mountpoint symlink */ 5870fafdc9fSDavid Howells #define AFS_VNODE_AUTOCELL 6 /* set if Vnode is an auto mount point */ 5880fafdc9fSDavid Howells #define AFS_VNODE_PSEUDODIR 7 /* set if Vnode is a pseudo directory */ 5895a813276SDavid Howells #define AFS_VNODE_NEW_CONTENT 8 /* Set if file has new content (create/trunc-0) */ 59008e0e7c8SDavid Howells 5914343d008SDavid Howells struct list_head wb_keys; /* List of keys available for writeback */ 592e8d6c554SDavid Howells struct list_head pending_locks; /* locks waiting to be granted */ 593e8d6c554SDavid Howells struct list_head granted_locks; /* locks granted on this file */ 594e8d6c554SDavid Howells struct delayed_work lock_work; /* work to be done in locking */ 5950fafdc9fSDavid Howells struct key *lock_key; /* Key to be used in lock ops */ 5960fafdc9fSDavid Howells enum afs_lock_state lock_state : 8; 5970fafdc9fSDavid Howells afs_lock_type_t lock_type : 8; 59831143d5dSDavid Howells 59908e0e7c8SDavid Howells /* outstanding callback notification on this file */ 600c435ee34SDavid Howells struct afs_cb_interest *cb_interest; /* Server on which this resides */ 601c435ee34SDavid Howells unsigned int cb_s_break; /* Mass break counter on ->server */ 60268251f0aSDavid Howells unsigned int cb_v_break; /* Mass break counter on ->volume */ 603c435ee34SDavid Howells unsigned int cb_break; /* Break counter on vnode */ 604c435ee34SDavid Howells seqlock_t cb_lock; /* Lock for ->cb_interest, ->status, ->cb_*break */ 605c435ee34SDavid Howells 606c435ee34SDavid Howells time64_t cb_expires_at; /* time at which callback expires */ 60708e0e7c8SDavid Howells unsigned cb_version; /* callback version */ 60808e0e7c8SDavid Howells afs_callback_type_t cb_type; /* type of callback */ 60908e0e7c8SDavid Howells }; 61008e0e7c8SDavid Howells 61112bdcf33SDavid Howells static inline struct fscache_cookie *afs_vnode_cache(struct afs_vnode *vnode) 61212bdcf33SDavid Howells { 61312bdcf33SDavid Howells #ifdef CONFIG_AFS_FSCACHE 61412bdcf33SDavid Howells return vnode->cache; 61512bdcf33SDavid Howells #else 61612bdcf33SDavid Howells return NULL; 61712bdcf33SDavid Howells #endif 61812bdcf33SDavid Howells } 61912bdcf33SDavid Howells 62000d3b7a4SDavid Howells /* 62100d3b7a4SDavid Howells * cached security record for one user's attempt to access a vnode 62200d3b7a4SDavid Howells */ 62300d3b7a4SDavid Howells struct afs_permit { 62400d3b7a4SDavid Howells struct key *key; /* RxRPC ticket holding a security context */ 625be080a6fSDavid Howells afs_access_t access; /* CallerAccess value for this key */ 62600d3b7a4SDavid Howells }; 62700d3b7a4SDavid Howells 62800d3b7a4SDavid Howells /* 629be080a6fSDavid Howells * Immutable cache of CallerAccess records from attempts to access vnodes. 630be080a6fSDavid Howells * These may be shared between multiple vnodes. 63100d3b7a4SDavid Howells */ 63200d3b7a4SDavid Howells struct afs_permits { 633be080a6fSDavid Howells struct rcu_head rcu; 634be080a6fSDavid Howells struct hlist_node hash_node; /* Link in hash */ 635be080a6fSDavid Howells unsigned long h; /* Hash value for this permit list */ 636be080a6fSDavid Howells refcount_t usage; 637be080a6fSDavid Howells unsigned short nr_permits; /* Number of records */ 638be080a6fSDavid Howells bool invalidated; /* Invalidated due to key change */ 639be080a6fSDavid Howells struct afs_permit permits[]; /* List of permits sorted by key pointer */ 64000d3b7a4SDavid Howells }; 64100d3b7a4SDavid Howells 642b908fe6bSDavid Howells /* 643b908fe6bSDavid Howells * record of one of a system's set of network interfaces 644b908fe6bSDavid Howells */ 645b908fe6bSDavid Howells struct afs_interface { 646b908fe6bSDavid Howells struct in_addr address; /* IPv4 address bound to interface */ 647b908fe6bSDavid Howells struct in_addr netmask; /* netmask applied to address */ 648b908fe6bSDavid Howells unsigned mtu; /* MTU of interface */ 649b908fe6bSDavid Howells }; 650b908fe6bSDavid Howells 6518b2a464cSDavid Howells /* 6528b2a464cSDavid Howells * Cursor for iterating over a server's address list. 6538b2a464cSDavid Howells */ 6548b2a464cSDavid Howells struct afs_addr_cursor { 6558b2a464cSDavid Howells struct afs_addr_list *alist; /* Current address list (pins ref) */ 6568b2a464cSDavid Howells struct sockaddr_rxrpc *addr; 657d2ddc776SDavid Howells u32 abort_code; 6588b2a464cSDavid Howells unsigned short start; /* Starting point in alist->addrs[] */ 6598b2a464cSDavid Howells unsigned short index; /* Wrapping offset from start to current addr */ 6608b2a464cSDavid Howells short error; 6618b2a464cSDavid Howells bool begun; /* T if we've begun iteration */ 6628b2a464cSDavid Howells bool responded; /* T if the current address responded */ 663744bcd71SDavid Howells unsigned short nr_iterations; /* Number of address iterations */ 6648b2a464cSDavid Howells }; 6658b2a464cSDavid Howells 6668b2a464cSDavid Howells /* 6670a5143f2SDavid Howells * Cursor for iterating over a set of volume location servers. 6680a5143f2SDavid Howells */ 6690a5143f2SDavid Howells struct afs_vl_cursor { 6700a5143f2SDavid Howells struct afs_addr_cursor ac; 6710a5143f2SDavid Howells struct afs_cell *cell; /* The cell we're querying */ 6720a5143f2SDavid Howells struct afs_vlserver_list *server_list; /* Current server list (pins ref) */ 6730a5143f2SDavid Howells struct key *key; /* Key for the server */ 6740a5143f2SDavid Howells unsigned char start; /* Initial index in server list */ 6750a5143f2SDavid Howells unsigned char index; /* Number of servers tried beyond start */ 6760a5143f2SDavid Howells short error; 6770a5143f2SDavid Howells unsigned short flags; 6780a5143f2SDavid Howells #define AFS_VL_CURSOR_STOP 0x0001 /* Set to cease iteration */ 6790a5143f2SDavid Howells #define AFS_VL_CURSOR_RETRY 0x0002 /* Set to do a retry */ 6800a5143f2SDavid Howells #define AFS_VL_CURSOR_RETRIED 0x0004 /* Set if started a retry */ 681744bcd71SDavid Howells unsigned short nr_iterations; /* Number of server iterations */ 6820a5143f2SDavid Howells }; 6830a5143f2SDavid Howells 6840a5143f2SDavid Howells /* 6858b2a464cSDavid Howells * Cursor for iterating over a set of fileservers. 6868b2a464cSDavid Howells */ 6878b2a464cSDavid Howells struct afs_fs_cursor { 6888b2a464cSDavid Howells struct afs_addr_cursor ac; 689d2ddc776SDavid Howells struct afs_vnode *vnode; 690d2ddc776SDavid Howells struct afs_server_list *server_list; /* Current server list (pins ref) */ 691d2ddc776SDavid Howells struct afs_cb_interest *cbi; /* Server on which this resides (pins ref) */ 692d2ddc776SDavid Howells struct key *key; /* Key for the server */ 693d2ddc776SDavid Howells unsigned int cb_break; /* cb_break + cb_s_break before the call */ 694d2ddc776SDavid Howells unsigned int cb_break_2; /* cb_break + cb_s_break (2nd vnode) */ 695d2ddc776SDavid Howells unsigned char start; /* Initial index in server list */ 696d2ddc776SDavid Howells unsigned char index; /* Number of servers tried beyond start */ 697e7f680f4SDavid Howells short error; 698d2ddc776SDavid Howells unsigned short flags; 699d2ddc776SDavid Howells #define AFS_FS_CURSOR_STOP 0x0001 /* Set to cease iteration */ 700d2ddc776SDavid Howells #define AFS_FS_CURSOR_VBUSY 0x0002 /* Set if seen VBUSY */ 701d2ddc776SDavid Howells #define AFS_FS_CURSOR_VMOVED 0x0004 /* Set if seen VMOVED */ 702d2ddc776SDavid Howells #define AFS_FS_CURSOR_VNOVOL 0x0008 /* Set if seen VNOVOL */ 703d2ddc776SDavid Howells #define AFS_FS_CURSOR_CUR_ONLY 0x0010 /* Set if current server only (file lock held) */ 704d2ddc776SDavid Howells #define AFS_FS_CURSOR_NO_VSLEEP 0x0020 /* Set to prevent sleep on VBUSY, VOFFLINE, ... */ 705744bcd71SDavid Howells unsigned short nr_iterations; /* Number of server iterations */ 7068b2a464cSDavid Howells }; 7078b2a464cSDavid Howells 708402cb8ddSDavid Howells /* 709402cb8ddSDavid Howells * Cache auxiliary data. 710402cb8ddSDavid Howells */ 711402cb8ddSDavid Howells struct afs_vnode_cache_aux { 712402cb8ddSDavid Howells u64 data_version; 713402cb8ddSDavid Howells } __packed; 714402cb8ddSDavid Howells 71598bf40cdSDavid Howells #include <trace/events/afs.h> 71698bf40cdSDavid Howells 71708e0e7c8SDavid Howells /*****************************************************************************/ 71808e0e7c8SDavid Howells /* 7198b2a464cSDavid Howells * addr_list.c 7208b2a464cSDavid Howells */ 7218b2a464cSDavid Howells static inline struct afs_addr_list *afs_get_addrlist(struct afs_addr_list *alist) 7228b2a464cSDavid Howells { 7238b2a464cSDavid Howells if (alist) 7248b2a464cSDavid Howells refcount_inc(&alist->usage); 7258b2a464cSDavid Howells return alist; 7268b2a464cSDavid Howells } 7278b2a464cSDavid Howells extern struct afs_addr_list *afs_alloc_addrlist(unsigned int, 7288b2a464cSDavid Howells unsigned short, 7298b2a464cSDavid Howells unsigned short); 7308b2a464cSDavid Howells extern void afs_put_addrlist(struct afs_addr_list *); 7310a5143f2SDavid Howells extern struct afs_vlserver_list *afs_parse_text_addrs(struct afs_net *, 7320a5143f2SDavid Howells const char *, size_t, char, 7338b2a464cSDavid Howells unsigned short, unsigned short); 7340a5143f2SDavid Howells extern struct afs_vlserver_list *afs_dns_query(struct afs_cell *, time64_t *); 7358b2a464cSDavid Howells extern bool afs_iterate_addresses(struct afs_addr_cursor *); 7368b2a464cSDavid Howells extern int afs_end_cursor(struct afs_addr_cursor *); 7378b2a464cSDavid Howells 738bf99a53cSDavid Howells extern void afs_merge_fs_addr4(struct afs_addr_list *, __be32, u16); 739bf99a53cSDavid Howells extern void afs_merge_fs_addr6(struct afs_addr_list *, __be32 *, u16); 740d2ddc776SDavid Howells 7418b2a464cSDavid Howells /* 7429b3f26c9SDavid Howells * cache.c 7439b3f26c9SDavid Howells */ 7449b3f26c9SDavid Howells #ifdef CONFIG_AFS_FSCACHE 7459b3f26c9SDavid Howells extern struct fscache_netfs afs_cache_netfs; 7469b3f26c9SDavid Howells extern struct fscache_cookie_def afs_cell_cache_index_def; 7479b3f26c9SDavid Howells extern struct fscache_cookie_def afs_volume_cache_index_def; 7489b3f26c9SDavid Howells extern struct fscache_cookie_def afs_vnode_cache_index_def; 7499b3f26c9SDavid Howells #else 7509b3f26c9SDavid Howells #define afs_cell_cache_index_def (*(struct fscache_cookie_def *) NULL) 7519b3f26c9SDavid Howells #define afs_volume_cache_index_def (*(struct fscache_cookie_def *) NULL) 7529b3f26c9SDavid Howells #define afs_vnode_cache_index_def (*(struct fscache_cookie_def *) NULL) 7539b3f26c9SDavid Howells #endif 7549b3f26c9SDavid Howells 7559b3f26c9SDavid Howells /* 75608e0e7c8SDavid Howells * callback.c 75708e0e7c8SDavid Howells */ 75808e0e7c8SDavid Howells extern void afs_init_callback_state(struct afs_server *); 75930062bd1SDavid Howells extern void __afs_break_callback(struct afs_vnode *); 760c435ee34SDavid Howells extern void afs_break_callback(struct afs_vnode *); 7615cf9dd55SDavid Howells extern void afs_break_callbacks(struct afs_server *, size_t, struct afs_callback_break*); 762c435ee34SDavid Howells 763d4a96becSDavid Howells extern int afs_register_server_cb_interest(struct afs_vnode *, 764d4a96becSDavid Howells struct afs_server_list *, unsigned int); 765c435ee34SDavid Howells extern void afs_put_cb_interest(struct afs_net *, struct afs_cb_interest *); 766d2ddc776SDavid Howells extern void afs_clear_callback_interests(struct afs_net *, struct afs_server_list *); 767c435ee34SDavid Howells 768c435ee34SDavid Howells static inline struct afs_cb_interest *afs_get_cb_interest(struct afs_cb_interest *cbi) 769c435ee34SDavid Howells { 770d4a96becSDavid Howells if (cbi) 771c435ee34SDavid Howells refcount_inc(&cbi->usage); 772c435ee34SDavid Howells return cbi; 773c435ee34SDavid Howells } 7741da177e4SLinus Torvalds 77568251f0aSDavid Howells static inline unsigned int afs_calc_vnode_cb_break(struct afs_vnode *vnode) 77668251f0aSDavid Howells { 77768251f0aSDavid Howells return vnode->cb_break + vnode->cb_s_break + vnode->cb_v_break; 77868251f0aSDavid Howells } 77968251f0aSDavid Howells 78068251f0aSDavid Howells static inline unsigned int afs_cb_break_sum(struct afs_vnode *vnode, 78168251f0aSDavid Howells struct afs_cb_interest *cbi) 78268251f0aSDavid Howells { 78368251f0aSDavid Howells return vnode->cb_break + cbi->server->cb_s_break + vnode->volume->cb_v_break; 78468251f0aSDavid Howells } 78568251f0aSDavid Howells 7861da177e4SLinus Torvalds /* 7871da177e4SLinus Torvalds * cell.c 7881da177e4SLinus Torvalds */ 789989782dcSDavid Howells extern int afs_cell_init(struct afs_net *, const char *); 790989782dcSDavid Howells extern struct afs_cell *afs_lookup_cell_rcu(struct afs_net *, const char *, unsigned); 791989782dcSDavid Howells extern struct afs_cell *afs_lookup_cell(struct afs_net *, const char *, unsigned, 792989782dcSDavid Howells const char *, bool); 7938b2a464cSDavid Howells extern struct afs_cell *afs_get_cell(struct afs_cell *); 7949ed900b1SDavid Howells extern void afs_put_cell(struct afs_net *, struct afs_cell *); 795989782dcSDavid Howells extern void afs_manage_cells(struct work_struct *); 796989782dcSDavid Howells extern void afs_cells_timer(struct timer_list *); 797f044c884SDavid Howells extern void __net_exit afs_cell_purge(struct afs_net *); 79808e0e7c8SDavid Howells 79908e0e7c8SDavid Howells /* 80008e0e7c8SDavid Howells * cmservice.c 80108e0e7c8SDavid Howells */ 80208e0e7c8SDavid Howells extern bool afs_cm_incoming_call(struct afs_call *); 80308e0e7c8SDavid Howells 8041da177e4SLinus Torvalds /* 8051da177e4SLinus Torvalds * dir.c 8061da177e4SLinus Torvalds */ 8074b6f5d20SArjan van de Ven extern const struct file_operations afs_dir_file_operations; 8084d673da1SDavid Howells extern const struct inode_operations afs_dir_inode_operations; 809f3ddee8dSDavid Howells extern const struct address_space_operations afs_dir_aops; 8104d673da1SDavid Howells extern const struct dentry_operations afs_fs_dentry_operations; 8114d673da1SDavid Howells 81266c7e1d3SDavid Howells extern void afs_d_release(struct dentry *); 81366c7e1d3SDavid Howells 81466c7e1d3SDavid Howells /* 81563a4681fSDavid Howells * dir_edit.c 81663a4681fSDavid Howells */ 81763a4681fSDavid Howells extern void afs_edit_dir_add(struct afs_vnode *, struct qstr *, struct afs_fid *, 81863a4681fSDavid Howells enum afs_edit_dir_reason); 81963a4681fSDavid Howells extern void afs_edit_dir_remove(struct afs_vnode *, struct qstr *, enum afs_edit_dir_reason); 82063a4681fSDavid Howells 82163a4681fSDavid Howells /* 82266c7e1d3SDavid Howells * dynroot.c 82366c7e1d3SDavid Howells */ 82466c7e1d3SDavid Howells extern const struct file_operations afs_dynroot_file_operations; 82566c7e1d3SDavid Howells extern const struct inode_operations afs_dynroot_inode_operations; 82666c7e1d3SDavid Howells extern const struct dentry_operations afs_dynroot_dentry_operations; 82766c7e1d3SDavid Howells 82866c7e1d3SDavid Howells extern struct inode *afs_try_auto_mntpt(struct dentry *, struct inode *); 8290da0b7fdSDavid Howells extern int afs_dynroot_mkdir(struct afs_net *, struct afs_cell *); 8300da0b7fdSDavid Howells extern void afs_dynroot_rmdir(struct afs_net *, struct afs_cell *); 8310da0b7fdSDavid Howells extern int afs_dynroot_populate(struct super_block *); 8320da0b7fdSDavid Howells extern void afs_dynroot_depopulate(struct super_block *); 8331da177e4SLinus Torvalds 8341da177e4SLinus Torvalds /* 8351da177e4SLinus Torvalds * file.c 8361da177e4SLinus Torvalds */ 837f5e54d6eSChristoph Hellwig extern const struct address_space_operations afs_fs_aops; 838754661f1SArjan van de Ven extern const struct inode_operations afs_file_inode_operations; 83900d3b7a4SDavid Howells extern const struct file_operations afs_file_operations; 84000d3b7a4SDavid Howells 8414343d008SDavid Howells extern int afs_cache_wb_key(struct afs_vnode *, struct afs_file *); 8424343d008SDavid Howells extern void afs_put_wb_key(struct afs_wb_key *); 84300d3b7a4SDavid Howells extern int afs_open(struct inode *, struct file *); 84400d3b7a4SDavid Howells extern int afs_release(struct inode *, struct file *); 845d2ddc776SDavid Howells extern int afs_fetch_data(struct afs_vnode *, struct key *, struct afs_read *); 846f6d335c0SAl Viro extern int afs_page_filler(void *, struct page *); 847196ee9cdSDavid Howells extern void afs_put_read(struct afs_read *); 8481da177e4SLinus Torvalds 8491da177e4SLinus Torvalds /* 850e8d6c554SDavid Howells * flock.c 851e8d6c554SDavid Howells */ 852f044c884SDavid Howells extern struct workqueue_struct *afs_lock_manager; 853f044c884SDavid Howells 854e8d6c554SDavid Howells extern void afs_lock_work(struct work_struct *); 855e8d6c554SDavid Howells extern void afs_lock_may_be_available(struct afs_vnode *); 856e8d6c554SDavid Howells extern int afs_lock(struct file *, int, struct file_lock *); 857e8d6c554SDavid Howells extern int afs_flock(struct file *, int, struct file_lock *); 858e8d6c554SDavid Howells 859e8d6c554SDavid Howells /* 86008e0e7c8SDavid Howells * fsclient.c 86108e0e7c8SDavid Howells */ 862dd9fbcb8SDavid Howells #define AFS_VNODE_NOT_YET_SET 0x01 863dd9fbcb8SDavid Howells #define AFS_VNODE_META_CHANGED 0x02 864dd9fbcb8SDavid Howells #define AFS_VNODE_DATA_CHANGED 0x04 865dd9fbcb8SDavid Howells extern void afs_update_inode_from_status(struct afs_vnode *, struct afs_file_status *, 866dd9fbcb8SDavid Howells const afs_dataversion_t *, u8); 867dd9fbcb8SDavid Howells 8680c3a5ac2SDavid Howells extern int afs_fs_fetch_file_status(struct afs_fs_cursor *, struct afs_volsync *, bool); 869d2ddc776SDavid Howells extern int afs_fs_give_up_callbacks(struct afs_net *, struct afs_server *); 870d2ddc776SDavid Howells extern int afs_fs_fetch_data(struct afs_fs_cursor *, struct afs_read *); 87163a4681fSDavid Howells extern int afs_fs_create(struct afs_fs_cursor *, const char *, umode_t, u64, 872d2ddc776SDavid Howells struct afs_fid *, struct afs_file_status *, struct afs_callback *); 87330062bd1SDavid Howells extern int afs_fs_remove(struct afs_fs_cursor *, struct afs_vnode *, const char *, bool, u64); 87463a4681fSDavid Howells extern int afs_fs_link(struct afs_fs_cursor *, struct afs_vnode *, const char *, u64); 87563a4681fSDavid Howells extern int afs_fs_symlink(struct afs_fs_cursor *, const char *, const char *, u64, 876d2ddc776SDavid Howells struct afs_fid *, struct afs_file_status *); 877d2ddc776SDavid Howells extern int afs_fs_rename(struct afs_fs_cursor *, const char *, 87863a4681fSDavid Howells struct afs_vnode *, const char *, u64, u64); 8794343d008SDavid Howells extern int afs_fs_store_data(struct afs_fs_cursor *, struct address_space *, 880d2ddc776SDavid Howells pgoff_t, pgoff_t, unsigned, unsigned); 881d2ddc776SDavid Howells extern int afs_fs_setattr(struct afs_fs_cursor *, struct iattr *); 882d2ddc776SDavid Howells extern int afs_fs_get_volume_status(struct afs_fs_cursor *, struct afs_volume_status *); 883d2ddc776SDavid Howells extern int afs_fs_set_lock(struct afs_fs_cursor *, afs_lock_type_t); 884d2ddc776SDavid Howells extern int afs_fs_extend_lock(struct afs_fs_cursor *); 885d2ddc776SDavid Howells extern int afs_fs_release_lock(struct afs_fs_cursor *); 886d2ddc776SDavid Howells extern int afs_fs_give_up_all_callbacks(struct afs_net *, struct afs_server *, 887d2ddc776SDavid Howells struct afs_addr_cursor *, struct key *); 888d2ddc776SDavid Howells extern int afs_fs_get_capabilities(struct afs_net *, struct afs_server *, 889d2ddc776SDavid Howells struct afs_addr_cursor *, struct key *); 8905cf9dd55SDavid Howells extern int afs_fs_inline_bulk_status(struct afs_fs_cursor *, struct afs_net *, 8915cf9dd55SDavid Howells struct afs_fid *, struct afs_file_status *, 8925cf9dd55SDavid Howells struct afs_callback *, unsigned int, 8935cf9dd55SDavid Howells struct afs_volsync *); 8945cf9dd55SDavid Howells extern int afs_fs_fetch_status(struct afs_fs_cursor *, struct afs_net *, 8955cf9dd55SDavid Howells struct afs_fid *, struct afs_file_status *, 8965cf9dd55SDavid Howells struct afs_callback *, struct afs_volsync *); 89708e0e7c8SDavid Howells 89808e0e7c8SDavid Howells /* 8991da177e4SLinus Torvalds * inode.c 9001da177e4SLinus Torvalds */ 9010c3a5ac2SDavid Howells extern int afs_fetch_status(struct afs_vnode *, struct key *, bool); 902c435ee34SDavid Howells extern int afs_iget5_test(struct inode *, void *); 9034d673da1SDavid Howells extern struct inode *afs_iget_pseudo_dir(struct super_block *, bool); 90400d3b7a4SDavid Howells extern struct inode *afs_iget(struct super_block *, struct key *, 905260a9803SDavid Howells struct afs_fid *, struct afs_file_status *, 906d2ddc776SDavid Howells struct afs_callback *, 907d2ddc776SDavid Howells struct afs_cb_interest *); 908416351f2SDavid Howells extern void afs_zap_data(struct afs_vnode *); 909260a9803SDavid Howells extern int afs_validate(struct afs_vnode *, struct key *); 910a528d35eSDavid Howells extern int afs_getattr(const struct path *, struct kstat *, u32, unsigned int); 91131143d5dSDavid Howells extern int afs_setattr(struct dentry *, struct iattr *); 912b57922d9SAl Viro extern void afs_evict_inode(struct inode *); 913bec5eb61Swanglei extern int afs_drop_inode(struct inode *); 9141da177e4SLinus Torvalds 9151da177e4SLinus Torvalds /* 9161da177e4SLinus Torvalds * main.c 9171da177e4SLinus Torvalds */ 9180ad53eeeSTejun Heo extern struct workqueue_struct *afs_wq; 9195b86d4ffSDavid Howells extern int afs_net_id; 9205b86d4ffSDavid Howells 9215b86d4ffSDavid Howells static inline struct afs_net *afs_net(struct net *net) 9225b86d4ffSDavid Howells { 9235b86d4ffSDavid Howells return net_generic(net, afs_net_id); 9245b86d4ffSDavid Howells } 9255b86d4ffSDavid Howells 9265b86d4ffSDavid Howells static inline struct afs_net *afs_sb2net(struct super_block *sb) 9275b86d4ffSDavid Howells { 9285b86d4ffSDavid Howells return afs_net(AFS_FS_S(sb)->net_ns); 9295b86d4ffSDavid Howells } 930f044c884SDavid Howells 931f044c884SDavid Howells static inline struct afs_net *afs_d2net(struct dentry *dentry) 932f044c884SDavid Howells { 9335b86d4ffSDavid Howells return afs_sb2net(dentry->d_sb); 934f044c884SDavid Howells } 935f044c884SDavid Howells 936f044c884SDavid Howells static inline struct afs_net *afs_i2net(struct inode *inode) 937f044c884SDavid Howells { 9385b86d4ffSDavid Howells return afs_sb2net(inode->i_sb); 939f044c884SDavid Howells } 940f044c884SDavid Howells 941f044c884SDavid Howells static inline struct afs_net *afs_v2net(struct afs_vnode *vnode) 942f044c884SDavid Howells { 9435b86d4ffSDavid Howells return afs_i2net(&vnode->vfs_inode); 944f044c884SDavid Howells } 945f044c884SDavid Howells 946f044c884SDavid Howells static inline struct afs_net *afs_sock2net(struct sock *sk) 947f044c884SDavid Howells { 9485b86d4ffSDavid Howells return net_generic(sock_net(sk), afs_net_id); 949f044c884SDavid Howells } 9501da177e4SLinus Torvalds 951d55b4da4SDavid Howells static inline void __afs_stat(atomic_t *s) 952d55b4da4SDavid Howells { 953d55b4da4SDavid Howells atomic_inc(s); 954d55b4da4SDavid Howells } 955d55b4da4SDavid Howells 956d55b4da4SDavid Howells #define afs_stat_v(vnode, n) __afs_stat(&afs_v2net(vnode)->n) 957d55b4da4SDavid Howells 9581da177e4SLinus Torvalds /* 95908e0e7c8SDavid Howells * misc.c 96008e0e7c8SDavid Howells */ 96108e0e7c8SDavid Howells extern int afs_abort_to_error(u32); 96208e0e7c8SDavid Howells 96308e0e7c8SDavid Howells /* 9641da177e4SLinus Torvalds * mntpt.c 9651da177e4SLinus Torvalds */ 966754661f1SArjan van de Ven extern const struct inode_operations afs_mntpt_inode_operations; 967bec5eb61Swanglei extern const struct inode_operations afs_autocell_inode_operations; 9684b6f5d20SArjan van de Ven extern const struct file_operations afs_mntpt_file_operations; 9691da177e4SLinus Torvalds 970d18610b0SDavid Howells extern struct vfsmount *afs_d_automount(struct path *); 97108e0e7c8SDavid Howells extern void afs_mntpt_kill_timer(void); 9721da177e4SLinus Torvalds 9731da177e4SLinus Torvalds /* 974b4db2b35SArnd Bergmann * netdevices.c 975b4db2b35SArnd Bergmann */ 9765b86d4ffSDavid Howells extern int afs_get_ipv4_interfaces(struct afs_net *, struct afs_interface *, 9775b86d4ffSDavid Howells size_t, bool); 978b4db2b35SArnd Bergmann 979b4db2b35SArnd Bergmann /* 9801da177e4SLinus Torvalds * proc.c 9811da177e4SLinus Torvalds */ 982b6cfbecaSDavid Howells #ifdef CONFIG_PROC_FS 983f044c884SDavid Howells extern int __net_init afs_proc_init(struct afs_net *); 984f044c884SDavid Howells extern void __net_exit afs_proc_cleanup(struct afs_net *); 9855b86d4ffSDavid Howells extern int afs_proc_cell_setup(struct afs_cell *); 9865b86d4ffSDavid Howells extern void afs_proc_cell_remove(struct afs_cell *); 9876f8880d8SDavid Howells extern void afs_put_sysnames(struct afs_sysnames *); 988b6cfbecaSDavid Howells #else 989b6cfbecaSDavid Howells static inline int afs_proc_init(struct afs_net *net) { return 0; } 990b6cfbecaSDavid Howells static inline void afs_proc_cleanup(struct afs_net *net) {} 991b6cfbecaSDavid Howells static inline int afs_proc_cell_setup(struct afs_cell *cell) { return 0; } 992b6cfbecaSDavid Howells static inline void afs_proc_cell_remove(struct afs_cell *cell) {} 993b6cfbecaSDavid Howells static inline void afs_put_sysnames(struct afs_sysnames *sysnames) {} 994b6cfbecaSDavid Howells #endif 9951da177e4SLinus Torvalds 99608e0e7c8SDavid Howells /* 997d2ddc776SDavid Howells * rotate.c 998d2ddc776SDavid Howells */ 999d2ddc776SDavid Howells extern bool afs_begin_vnode_operation(struct afs_fs_cursor *, struct afs_vnode *, 1000d2ddc776SDavid Howells struct key *); 1001d2ddc776SDavid Howells extern bool afs_select_fileserver(struct afs_fs_cursor *); 1002d2ddc776SDavid Howells extern bool afs_select_current_fileserver(struct afs_fs_cursor *); 1003d2ddc776SDavid Howells extern int afs_end_vnode_operation(struct afs_fs_cursor *); 1004d2ddc776SDavid Howells 1005d2ddc776SDavid Howells /* 100608e0e7c8SDavid Howells * rxrpc.c 100708e0e7c8SDavid Howells */ 1008f044c884SDavid Howells extern struct workqueue_struct *afs_async_calls; 10098324f0bcSDavid Howells 1010f044c884SDavid Howells extern int __net_init afs_open_socket(struct afs_net *); 1011f044c884SDavid Howells extern void __net_exit afs_close_socket(struct afs_net *); 1012f044c884SDavid Howells extern void afs_charge_preallocation(struct work_struct *); 1013341f741fSDavid Howells extern void afs_put_call(struct afs_call *); 1014341f741fSDavid Howells extern int afs_queue_call_work(struct afs_call *); 10158b2a464cSDavid Howells extern long afs_make_call(struct afs_addr_cursor *, struct afs_call *, gfp_t, bool); 1016f044c884SDavid Howells extern struct afs_call *afs_alloc_flat_call(struct afs_net *, 1017f044c884SDavid Howells const struct afs_call_type *, 101808e0e7c8SDavid Howells size_t, size_t); 101908e0e7c8SDavid Howells extern void afs_flat_call_destructor(struct afs_call *); 102008e0e7c8SDavid Howells extern void afs_send_empty_reply(struct afs_call *); 1021b908fe6bSDavid Howells extern void afs_send_simple_reply(struct afs_call *, const void *, size_t); 102212bdcf33SDavid Howells extern int afs_extract_data(struct afs_call *, bool); 1023160cb957SDavid Howells extern int afs_protocol_error(struct afs_call *, int, enum afs_eproto_cause); 102408e0e7c8SDavid Howells 102512bdcf33SDavid Howells static inline void afs_extract_begin(struct afs_call *call, void *buf, size_t size) 102612bdcf33SDavid Howells { 102712bdcf33SDavid Howells call->kvec[0].iov_base = buf; 102812bdcf33SDavid Howells call->kvec[0].iov_len = size; 102912bdcf33SDavid Howells iov_iter_kvec(&call->iter, READ, call->kvec, 1, size); 103012bdcf33SDavid Howells } 103112bdcf33SDavid Howells 103212bdcf33SDavid Howells static inline void afs_extract_to_tmp(struct afs_call *call) 103312bdcf33SDavid Howells { 103412bdcf33SDavid Howells afs_extract_begin(call, &call->tmp, sizeof(call->tmp)); 103512bdcf33SDavid Howells } 103612bdcf33SDavid Howells 103712bdcf33SDavid Howells static inline void afs_extract_to_tmp64(struct afs_call *call) 103812bdcf33SDavid Howells { 103912bdcf33SDavid Howells afs_extract_begin(call, &call->tmp64, sizeof(call->tmp64)); 104012bdcf33SDavid Howells } 104112bdcf33SDavid Howells 104212bdcf33SDavid Howells static inline void afs_extract_discard(struct afs_call *call, size_t size) 104312bdcf33SDavid Howells { 104412bdcf33SDavid Howells iov_iter_discard(&call->iter, READ, size); 104512bdcf33SDavid Howells } 104612bdcf33SDavid Howells 104712bdcf33SDavid Howells static inline void afs_extract_to_buf(struct afs_call *call, size_t size) 104812bdcf33SDavid Howells { 104912bdcf33SDavid Howells afs_extract_begin(call, call->buffer, size); 105012bdcf33SDavid Howells } 105112bdcf33SDavid Howells 1052d001648eSDavid Howells static inline int afs_transfer_reply(struct afs_call *call) 1053372ee163SDavid Howells { 105412bdcf33SDavid Howells return afs_extract_data(call, false); 1055372ee163SDavid Howells } 1056372ee163SDavid Howells 105798bf40cdSDavid Howells static inline bool afs_check_call_state(struct afs_call *call, 105898bf40cdSDavid Howells enum afs_call_state state) 105998bf40cdSDavid Howells { 106098bf40cdSDavid Howells return READ_ONCE(call->state) == state; 106198bf40cdSDavid Howells } 106298bf40cdSDavid Howells 106398bf40cdSDavid Howells static inline bool afs_set_call_state(struct afs_call *call, 106498bf40cdSDavid Howells enum afs_call_state from, 106598bf40cdSDavid Howells enum afs_call_state to) 106698bf40cdSDavid Howells { 106798bf40cdSDavid Howells bool ok = false; 106898bf40cdSDavid Howells 106998bf40cdSDavid Howells spin_lock_bh(&call->state_lock); 107098bf40cdSDavid Howells if (call->state == from) { 107198bf40cdSDavid Howells call->state = to; 107298bf40cdSDavid Howells trace_afs_call_state(call, from, to, 0, 0); 107398bf40cdSDavid Howells ok = true; 107498bf40cdSDavid Howells } 107598bf40cdSDavid Howells spin_unlock_bh(&call->state_lock); 107698bf40cdSDavid Howells return ok; 107798bf40cdSDavid Howells } 107898bf40cdSDavid Howells 107998bf40cdSDavid Howells static inline void afs_set_call_complete(struct afs_call *call, 108098bf40cdSDavid Howells int error, u32 remote_abort) 108198bf40cdSDavid Howells { 108298bf40cdSDavid Howells enum afs_call_state state; 108398bf40cdSDavid Howells bool ok = false; 108498bf40cdSDavid Howells 108598bf40cdSDavid Howells spin_lock_bh(&call->state_lock); 108698bf40cdSDavid Howells state = call->state; 108798bf40cdSDavid Howells if (state != AFS_CALL_COMPLETE) { 108898bf40cdSDavid Howells call->abort_code = remote_abort; 108998bf40cdSDavid Howells call->error = error; 109098bf40cdSDavid Howells call->state = AFS_CALL_COMPLETE; 109198bf40cdSDavid Howells trace_afs_call_state(call, state, AFS_CALL_COMPLETE, 109298bf40cdSDavid Howells error, remote_abort); 109398bf40cdSDavid Howells ok = true; 109498bf40cdSDavid Howells } 109598bf40cdSDavid Howells spin_unlock_bh(&call->state_lock); 109698bf40cdSDavid Howells if (ok) 109798bf40cdSDavid Howells trace_afs_call_done(call); 109898bf40cdSDavid Howells } 109998bf40cdSDavid Howells 110008e0e7c8SDavid Howells /* 110100d3b7a4SDavid Howells * security.c 110200d3b7a4SDavid Howells */ 1103be080a6fSDavid Howells extern void afs_put_permits(struct afs_permits *); 110400d3b7a4SDavid Howells extern void afs_clear_permits(struct afs_vnode *); 1105be080a6fSDavid Howells extern void afs_cache_permit(struct afs_vnode *, struct key *, unsigned int); 1106416351f2SDavid Howells extern void afs_zap_permits(struct rcu_head *); 110700d3b7a4SDavid Howells extern struct key *afs_request_key(struct afs_cell *); 11080fafdc9fSDavid Howells extern int afs_check_permit(struct afs_vnode *, struct key *, afs_access_t *); 110910556cb2SAl Viro extern int afs_permission(struct inode *, int); 1110be080a6fSDavid Howells extern void __exit afs_clean_up_permit_cache(void); 111100d3b7a4SDavid Howells 111200d3b7a4SDavid Howells /* 111308e0e7c8SDavid Howells * server.c 111408e0e7c8SDavid Howells */ 111508e0e7c8SDavid Howells extern spinlock_t afs_server_peer_lock; 111608e0e7c8SDavid Howells 1117c435ee34SDavid Howells static inline struct afs_server *afs_get_server(struct afs_server *server) 1118c435ee34SDavid Howells { 1119c435ee34SDavid Howells atomic_inc(&server->usage); 1120c435ee34SDavid Howells return server; 1121c435ee34SDavid Howells } 112208e0e7c8SDavid Howells 1123f044c884SDavid Howells extern struct afs_server *afs_find_server(struct afs_net *, 1124f044c884SDavid Howells const struct sockaddr_rxrpc *); 1125d2ddc776SDavid Howells extern struct afs_server *afs_find_server_by_uuid(struct afs_net *, const uuid_t *); 1126d2ddc776SDavid Howells extern struct afs_server *afs_lookup_server(struct afs_cell *, struct key *, const uuid_t *); 11279ed900b1SDavid Howells extern void afs_put_server(struct afs_net *, struct afs_server *); 1128d2ddc776SDavid Howells extern void afs_manage_servers(struct work_struct *); 1129d2ddc776SDavid Howells extern void afs_servers_timer(struct timer_list *); 1130f044c884SDavid Howells extern void __net_exit afs_purge_servers(struct afs_net *); 1131d2ddc776SDavid Howells extern bool afs_probe_fileserver(struct afs_fs_cursor *); 1132d2ddc776SDavid Howells extern bool afs_check_server_record(struct afs_fs_cursor *, struct afs_server *); 1133d2ddc776SDavid Howells 1134d2ddc776SDavid Howells /* 1135d2ddc776SDavid Howells * server_list.c 1136d2ddc776SDavid Howells */ 1137d2ddc776SDavid Howells static inline struct afs_server_list *afs_get_serverlist(struct afs_server_list *slist) 1138d2ddc776SDavid Howells { 1139d2ddc776SDavid Howells refcount_inc(&slist->usage); 1140d2ddc776SDavid Howells return slist; 1141d2ddc776SDavid Howells } 1142d2ddc776SDavid Howells 1143d2ddc776SDavid Howells extern void afs_put_serverlist(struct afs_net *, struct afs_server_list *); 1144d2ddc776SDavid Howells extern struct afs_server_list *afs_alloc_server_list(struct afs_cell *, struct key *, 1145d2ddc776SDavid Howells struct afs_vldb_entry *, 1146d2ddc776SDavid Howells u8); 1147d2ddc776SDavid Howells extern bool afs_annotate_server_list(struct afs_server_list *, struct afs_server_list *); 114808e0e7c8SDavid Howells 114908e0e7c8SDavid Howells /* 115000d3b7a4SDavid Howells * super.c 115100d3b7a4SDavid Howells */ 1152f044c884SDavid Howells extern int __init afs_fs_init(void); 11535b86d4ffSDavid Howells extern void afs_fs_exit(void); 115400d3b7a4SDavid Howells 115500d3b7a4SDavid Howells /* 115608e0e7c8SDavid Howells * vlclient.c 115708e0e7c8SDavid Howells */ 11580a5143f2SDavid Howells extern struct afs_vldb_entry *afs_vl_get_entry_by_name_u(struct afs_vl_cursor *, 11590a5143f2SDavid Howells const char *, int); 11600a5143f2SDavid Howells extern struct afs_addr_list *afs_vl_get_addrs_u(struct afs_vl_cursor *, const uuid_t *); 1161bf99a53cSDavid Howells extern int afs_vl_get_capabilities(struct afs_net *, struct afs_addr_cursor *, struct key *); 11620a5143f2SDavid Howells extern struct afs_addr_list *afs_yfsvl_get_endpoints(struct afs_vl_cursor *, const uuid_t *); 11630a5143f2SDavid Howells 11640a5143f2SDavid Howells /* 11650a5143f2SDavid Howells * vl_rotate.c 11660a5143f2SDavid Howells */ 11670a5143f2SDavid Howells extern bool afs_begin_vlserver_operation(struct afs_vl_cursor *, 11680a5143f2SDavid Howells struct afs_cell *, struct key *); 11690a5143f2SDavid Howells extern bool afs_select_vlserver(struct afs_vl_cursor *); 11700a5143f2SDavid Howells extern bool afs_select_current_vlserver(struct afs_vl_cursor *); 11710a5143f2SDavid Howells extern int afs_end_vlserver_operation(struct afs_vl_cursor *); 11720a5143f2SDavid Howells 11730a5143f2SDavid Howells /* 11740a5143f2SDavid Howells * vlserver_list.c 11750a5143f2SDavid Howells */ 11760a5143f2SDavid Howells static inline struct afs_vlserver *afs_get_vlserver(struct afs_vlserver *vlserver) 11770a5143f2SDavid Howells { 11780a5143f2SDavid Howells atomic_inc(&vlserver->usage); 11790a5143f2SDavid Howells return vlserver; 11800a5143f2SDavid Howells } 11810a5143f2SDavid Howells 11820a5143f2SDavid Howells static inline struct afs_vlserver_list *afs_get_vlserverlist(struct afs_vlserver_list *vllist) 11830a5143f2SDavid Howells { 11840a5143f2SDavid Howells if (vllist) 11850a5143f2SDavid Howells atomic_inc(&vllist->usage); 11860a5143f2SDavid Howells return vllist; 11870a5143f2SDavid Howells } 11880a5143f2SDavid Howells 11890a5143f2SDavid Howells extern struct afs_vlserver *afs_alloc_vlserver(const char *, size_t, unsigned short); 11900a5143f2SDavid Howells extern void afs_put_vlserver(struct afs_net *, struct afs_vlserver *); 11910a5143f2SDavid Howells extern struct afs_vlserver_list *afs_alloc_vlserver_list(unsigned int); 11920a5143f2SDavid Howells extern void afs_put_vlserverlist(struct afs_net *, struct afs_vlserver_list *); 11930a5143f2SDavid Howells extern struct afs_vlserver_list *afs_extract_vlserver_list(struct afs_cell *, 11940a5143f2SDavid Howells const void *, size_t); 119508e0e7c8SDavid Howells 119608e0e7c8SDavid Howells /* 119708e0e7c8SDavid Howells * volume.c 119808e0e7c8SDavid Howells */ 1199d2ddc776SDavid Howells static inline struct afs_volume *__afs_get_volume(struct afs_volume *volume) 120049566f6fSDavid Howells { 120149566f6fSDavid Howells if (volume) 120249566f6fSDavid Howells atomic_inc(&volume->usage); 120349566f6fSDavid Howells return volume; 120449566f6fSDavid Howells } 120508e0e7c8SDavid Howells 1206d2ddc776SDavid Howells extern struct afs_volume *afs_create_volume(struct afs_mount_params *); 1207d2ddc776SDavid Howells extern void afs_activate_volume(struct afs_volume *); 1208d2ddc776SDavid Howells extern void afs_deactivate_volume(struct afs_volume *); 12099ed900b1SDavid Howells extern void afs_put_volume(struct afs_cell *, struct afs_volume *); 1210d2ddc776SDavid Howells extern int afs_check_volume_status(struct afs_volume *, struct key *); 121108e0e7c8SDavid Howells 121231143d5dSDavid Howells /* 121331143d5dSDavid Howells * write.c 121431143d5dSDavid Howells */ 121531143d5dSDavid Howells extern int afs_set_page_dirty(struct page *); 121615b4650eSNick Piggin extern int afs_write_begin(struct file *file, struct address_space *mapping, 121715b4650eSNick Piggin loff_t pos, unsigned len, unsigned flags, 121815b4650eSNick Piggin struct page **pagep, void **fsdata); 121915b4650eSNick Piggin extern int afs_write_end(struct file *file, struct address_space *mapping, 122015b4650eSNick Piggin loff_t pos, unsigned len, unsigned copied, 122115b4650eSNick Piggin struct page *page, void *fsdata); 122231143d5dSDavid Howells extern int afs_writepage(struct page *, struct writeback_control *); 122331143d5dSDavid Howells extern int afs_writepages(struct address_space *, struct writeback_control *); 122431143d5dSDavid Howells extern void afs_pages_written_back(struct afs_vnode *, struct afs_call *); 122550b5551dSAl Viro extern ssize_t afs_file_write(struct kiocb *, struct iov_iter *); 122602c24a82SJosef Bacik extern int afs_fsync(struct file *, loff_t, loff_t, int); 12270722f186SSouptick Joarder extern vm_fault_t afs_page_mkwrite(struct vm_fault *vmf); 12284343d008SDavid Howells extern void afs_prune_wb_keys(struct afs_vnode *); 12294343d008SDavid Howells extern int afs_launder_page(struct page *); 123031143d5dSDavid Howells 1231d3e3b7eaSDavid Howells /* 1232d3e3b7eaSDavid Howells * xattr.c 1233d3e3b7eaSDavid Howells */ 1234d3e3b7eaSDavid Howells extern const struct xattr_handler *afs_xattr_handlers[]; 1235d3e3b7eaSDavid Howells extern ssize_t afs_listxattr(struct dentry *, char *, size_t); 123631143d5dSDavid Howells 123730062bd1SDavid Howells /* 123830062bd1SDavid Howells * yfsclient.c 123930062bd1SDavid Howells */ 124030062bd1SDavid Howells extern int yfs_fs_fetch_file_status(struct afs_fs_cursor *, struct afs_volsync *, bool); 124130062bd1SDavid Howells extern int yfs_fs_fetch_data(struct afs_fs_cursor *, struct afs_read *); 124230062bd1SDavid Howells extern int yfs_fs_create_file(struct afs_fs_cursor *, const char *, umode_t, u64, 124330062bd1SDavid Howells struct afs_fid *, struct afs_file_status *, struct afs_callback *); 124430062bd1SDavid Howells extern int yfs_fs_make_dir(struct afs_fs_cursor *, const char *, umode_t, u64, 124530062bd1SDavid Howells struct afs_fid *, struct afs_file_status *, struct afs_callback *); 124630062bd1SDavid Howells extern int yfs_fs_remove_file2(struct afs_fs_cursor *, struct afs_vnode *, const char *, u64); 124730062bd1SDavid Howells extern int yfs_fs_remove(struct afs_fs_cursor *, struct afs_vnode *, const char *, bool, u64); 124830062bd1SDavid Howells extern int yfs_fs_link(struct afs_fs_cursor *, struct afs_vnode *, const char *, u64); 124930062bd1SDavid Howells extern int yfs_fs_symlink(struct afs_fs_cursor *, const char *, const char *, u64, 125030062bd1SDavid Howells struct afs_fid *, struct afs_file_status *); 125130062bd1SDavid Howells extern int yfs_fs_rename(struct afs_fs_cursor *, const char *, 125230062bd1SDavid Howells struct afs_vnode *, const char *, u64, u64); 125330062bd1SDavid Howells extern int yfs_fs_store_data(struct afs_fs_cursor *, struct address_space *, 125430062bd1SDavid Howells pgoff_t, pgoff_t, unsigned, unsigned); 125530062bd1SDavid Howells extern int yfs_fs_setattr(struct afs_fs_cursor *, struct iattr *); 125630062bd1SDavid Howells extern int yfs_fs_get_volume_status(struct afs_fs_cursor *, struct afs_volume_status *); 125730062bd1SDavid Howells extern int yfs_fs_set_lock(struct afs_fs_cursor *, afs_lock_type_t); 125830062bd1SDavid Howells extern int yfs_fs_extend_lock(struct afs_fs_cursor *); 125930062bd1SDavid Howells extern int yfs_fs_release_lock(struct afs_fs_cursor *); 126030062bd1SDavid Howells extern int yfs_fs_fetch_status(struct afs_fs_cursor *, struct afs_net *, 126130062bd1SDavid Howells struct afs_fid *, struct afs_file_status *, 126230062bd1SDavid Howells struct afs_callback *, struct afs_volsync *); 126330062bd1SDavid Howells extern int yfs_fs_inline_bulk_status(struct afs_fs_cursor *, struct afs_net *, 126430062bd1SDavid Howells struct afs_fid *, struct afs_file_status *, 126530062bd1SDavid Howells struct afs_callback *, unsigned int, 126630062bd1SDavid Howells struct afs_volsync *); 1267d2ddc776SDavid Howells 1268d2ddc776SDavid Howells /* 1269d2ddc776SDavid Howells * Miscellaneous inline functions. 1270d2ddc776SDavid Howells */ 1271d2ddc776SDavid Howells static inline struct afs_vnode *AFS_FS_I(struct inode *inode) 1272d2ddc776SDavid Howells { 1273d2ddc776SDavid Howells return container_of(inode, struct afs_vnode, vfs_inode); 1274d2ddc776SDavid Howells } 1275d2ddc776SDavid Howells 1276d2ddc776SDavid Howells static inline struct inode *AFS_VNODE_TO_I(struct afs_vnode *vnode) 1277d2ddc776SDavid Howells { 1278d2ddc776SDavid Howells return &vnode->vfs_inode; 1279d2ddc776SDavid Howells } 1280d2ddc776SDavid Howells 1281d2ddc776SDavid Howells static inline void afs_vnode_commit_status(struct afs_fs_cursor *fc, 1282d2ddc776SDavid Howells struct afs_vnode *vnode, 1283d2ddc776SDavid Howells unsigned int cb_break) 1284d2ddc776SDavid Howells { 1285d2ddc776SDavid Howells if (fc->ac.error == 0) 1286d2ddc776SDavid Howells afs_cache_permit(vnode, fc->key, cb_break); 1287d2ddc776SDavid Howells } 1288d2ddc776SDavid Howells 1289d2ddc776SDavid Howells static inline void afs_check_for_remote_deletion(struct afs_fs_cursor *fc, 1290d2ddc776SDavid Howells struct afs_vnode *vnode) 1291d2ddc776SDavid Howells { 1292d2ddc776SDavid Howells if (fc->ac.error == -ENOENT) { 1293d2ddc776SDavid Howells set_bit(AFS_VNODE_DELETED, &vnode->flags); 1294d2ddc776SDavid Howells afs_break_callback(vnode); 1295d2ddc776SDavid Howells } 1296d2ddc776SDavid Howells } 1297d2ddc776SDavid Howells 1298f51375cdSDavid Howells static inline int afs_io_error(struct afs_call *call, enum afs_io_error where) 1299f51375cdSDavid Howells { 1300f51375cdSDavid Howells trace_afs_io_error(call->debug_id, -EIO, where); 1301f51375cdSDavid Howells return -EIO; 1302f51375cdSDavid Howells } 1303f51375cdSDavid Howells 1304f51375cdSDavid Howells static inline int afs_bad(struct afs_vnode *vnode, enum afs_file_error where) 1305f51375cdSDavid Howells { 1306f51375cdSDavid Howells trace_afs_file_error(vnode, -EIO, where); 1307f51375cdSDavid Howells return -EIO; 1308f51375cdSDavid Howells } 1309d2ddc776SDavid Howells 131008e0e7c8SDavid Howells /*****************************************************************************/ 131108e0e7c8SDavid Howells /* 131208e0e7c8SDavid Howells * debug tracing 131308e0e7c8SDavid Howells */ 131408e0e7c8SDavid Howells extern unsigned afs_debug; 131508e0e7c8SDavid Howells 131608e0e7c8SDavid Howells #define dbgprintk(FMT,...) \ 1317ad16df84SSven Schnelle printk("[%-6.6s] "FMT"\n", current->comm ,##__VA_ARGS__) 131808e0e7c8SDavid Howells 1319530b6412SHarvey Harrison #define kenter(FMT,...) dbgprintk("==> %s("FMT")",__func__ ,##__VA_ARGS__) 1320530b6412SHarvey Harrison #define kleave(FMT,...) dbgprintk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) 132108e0e7c8SDavid Howells #define kdebug(FMT,...) dbgprintk(" "FMT ,##__VA_ARGS__) 132208e0e7c8SDavid Howells 132308e0e7c8SDavid Howells 132408e0e7c8SDavid Howells #if defined(__KDEBUG) 132508e0e7c8SDavid Howells #define _enter(FMT,...) kenter(FMT,##__VA_ARGS__) 132608e0e7c8SDavid Howells #define _leave(FMT,...) kleave(FMT,##__VA_ARGS__) 132708e0e7c8SDavid Howells #define _debug(FMT,...) kdebug(FMT,##__VA_ARGS__) 132808e0e7c8SDavid Howells 132908e0e7c8SDavid Howells #elif defined(CONFIG_AFS_DEBUG) 133008e0e7c8SDavid Howells #define AFS_DEBUG_KENTER 0x01 133108e0e7c8SDavid Howells #define AFS_DEBUG_KLEAVE 0x02 133208e0e7c8SDavid Howells #define AFS_DEBUG_KDEBUG 0x04 133308e0e7c8SDavid Howells 133408e0e7c8SDavid Howells #define _enter(FMT,...) \ 133508e0e7c8SDavid Howells do { \ 133608e0e7c8SDavid Howells if (unlikely(afs_debug & AFS_DEBUG_KENTER)) \ 133708e0e7c8SDavid Howells kenter(FMT,##__VA_ARGS__); \ 133808e0e7c8SDavid Howells } while (0) 133908e0e7c8SDavid Howells 134008e0e7c8SDavid Howells #define _leave(FMT,...) \ 134108e0e7c8SDavid Howells do { \ 134208e0e7c8SDavid Howells if (unlikely(afs_debug & AFS_DEBUG_KLEAVE)) \ 134308e0e7c8SDavid Howells kleave(FMT,##__VA_ARGS__); \ 134408e0e7c8SDavid Howells } while (0) 134508e0e7c8SDavid Howells 134608e0e7c8SDavid Howells #define _debug(FMT,...) \ 134708e0e7c8SDavid Howells do { \ 134808e0e7c8SDavid Howells if (unlikely(afs_debug & AFS_DEBUG_KDEBUG)) \ 134908e0e7c8SDavid Howells kdebug(FMT,##__VA_ARGS__); \ 135008e0e7c8SDavid Howells } while (0) 135108e0e7c8SDavid Howells 135208e0e7c8SDavid Howells #else 135312fdff3fSDavid Howells #define _enter(FMT,...) no_printk("==> %s("FMT")",__func__ ,##__VA_ARGS__) 135412fdff3fSDavid Howells #define _leave(FMT,...) no_printk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) 135512fdff3fSDavid Howells #define _debug(FMT,...) no_printk(" "FMT ,##__VA_ARGS__) 135608e0e7c8SDavid Howells #endif 135708e0e7c8SDavid Howells 135808e0e7c8SDavid Howells /* 135908e0e7c8SDavid Howells * debug assertion checking 136008e0e7c8SDavid Howells */ 136108e0e7c8SDavid Howells #if 1 // defined(__KDEBUGALL) 136208e0e7c8SDavid Howells 136308e0e7c8SDavid Howells #define ASSERT(X) \ 136408e0e7c8SDavid Howells do { \ 136508e0e7c8SDavid Howells if (unlikely(!(X))) { \ 136608e0e7c8SDavid Howells printk(KERN_ERR "\n"); \ 136708e0e7c8SDavid Howells printk(KERN_ERR "AFS: Assertion failed\n"); \ 136808e0e7c8SDavid Howells BUG(); \ 136908e0e7c8SDavid Howells } \ 137008e0e7c8SDavid Howells } while(0) 137108e0e7c8SDavid Howells 137208e0e7c8SDavid Howells #define ASSERTCMP(X, OP, Y) \ 137308e0e7c8SDavid Howells do { \ 137408e0e7c8SDavid Howells if (unlikely(!((X) OP (Y)))) { \ 137508e0e7c8SDavid Howells printk(KERN_ERR "\n"); \ 137608e0e7c8SDavid Howells printk(KERN_ERR "AFS: Assertion failed\n"); \ 137708e0e7c8SDavid Howells printk(KERN_ERR "%lu " #OP " %lu is false\n", \ 137808e0e7c8SDavid Howells (unsigned long)(X), (unsigned long)(Y)); \ 137908e0e7c8SDavid Howells printk(KERN_ERR "0x%lx " #OP " 0x%lx is false\n", \ 138008e0e7c8SDavid Howells (unsigned long)(X), (unsigned long)(Y)); \ 138108e0e7c8SDavid Howells BUG(); \ 138208e0e7c8SDavid Howells } \ 138308e0e7c8SDavid Howells } while(0) 138408e0e7c8SDavid Howells 1385416351f2SDavid Howells #define ASSERTRANGE(L, OP1, N, OP2, H) \ 1386416351f2SDavid Howells do { \ 1387416351f2SDavid Howells if (unlikely(!((L) OP1 (N)) || !((N) OP2 (H)))) { \ 1388416351f2SDavid Howells printk(KERN_ERR "\n"); \ 1389416351f2SDavid Howells printk(KERN_ERR "AFS: Assertion failed\n"); \ 1390416351f2SDavid Howells printk(KERN_ERR "%lu "#OP1" %lu "#OP2" %lu is false\n", \ 1391416351f2SDavid Howells (unsigned long)(L), (unsigned long)(N), \ 1392416351f2SDavid Howells (unsigned long)(H)); \ 1393416351f2SDavid Howells printk(KERN_ERR "0x%lx "#OP1" 0x%lx "#OP2" 0x%lx is false\n", \ 1394416351f2SDavid Howells (unsigned long)(L), (unsigned long)(N), \ 1395416351f2SDavid Howells (unsigned long)(H)); \ 1396416351f2SDavid Howells BUG(); \ 1397416351f2SDavid Howells } \ 1398416351f2SDavid Howells } while(0) 1399416351f2SDavid Howells 140008e0e7c8SDavid Howells #define ASSERTIF(C, X) \ 140108e0e7c8SDavid Howells do { \ 140208e0e7c8SDavid Howells if (unlikely((C) && !(X))) { \ 140308e0e7c8SDavid Howells printk(KERN_ERR "\n"); \ 140408e0e7c8SDavid Howells printk(KERN_ERR "AFS: Assertion failed\n"); \ 140508e0e7c8SDavid Howells BUG(); \ 140608e0e7c8SDavid Howells } \ 140708e0e7c8SDavid Howells } while(0) 140808e0e7c8SDavid Howells 140908e0e7c8SDavid Howells #define ASSERTIFCMP(C, X, OP, Y) \ 141008e0e7c8SDavid Howells do { \ 141108e0e7c8SDavid Howells if (unlikely((C) && !((X) OP (Y)))) { \ 141208e0e7c8SDavid Howells printk(KERN_ERR "\n"); \ 141308e0e7c8SDavid Howells printk(KERN_ERR "AFS: Assertion failed\n"); \ 141408e0e7c8SDavid Howells printk(KERN_ERR "%lu " #OP " %lu is false\n", \ 141508e0e7c8SDavid Howells (unsigned long)(X), (unsigned long)(Y)); \ 141608e0e7c8SDavid Howells printk(KERN_ERR "0x%lx " #OP " 0x%lx is false\n", \ 141708e0e7c8SDavid Howells (unsigned long)(X), (unsigned long)(Y)); \ 141808e0e7c8SDavid Howells BUG(); \ 141908e0e7c8SDavid Howells } \ 142008e0e7c8SDavid Howells } while(0) 142108e0e7c8SDavid Howells 142208e0e7c8SDavid Howells #else 142308e0e7c8SDavid Howells 142408e0e7c8SDavid Howells #define ASSERT(X) \ 142508e0e7c8SDavid Howells do { \ 142608e0e7c8SDavid Howells } while(0) 142708e0e7c8SDavid Howells 142808e0e7c8SDavid Howells #define ASSERTCMP(X, OP, Y) \ 142908e0e7c8SDavid Howells do { \ 143008e0e7c8SDavid Howells } while(0) 143108e0e7c8SDavid Howells 1432416351f2SDavid Howells #define ASSERTRANGE(L, OP1, N, OP2, H) \ 1433416351f2SDavid Howells do { \ 1434416351f2SDavid Howells } while(0) 1435416351f2SDavid Howells 143608e0e7c8SDavid Howells #define ASSERTIF(C, X) \ 143708e0e7c8SDavid Howells do { \ 143808e0e7c8SDavid Howells } while(0) 143908e0e7c8SDavid Howells 144008e0e7c8SDavid Howells #define ASSERTIFCMP(C, X, OP, Y) \ 144108e0e7c8SDavid Howells do { \ 144208e0e7c8SDavid Howells } while(0) 144308e0e7c8SDavid Howells 144408e0e7c8SDavid Howells #endif /* __KDEBUGALL */ 1445