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 396c6c1d63SDavid Howells /* 406c6c1d63SDavid Howells * Partial file-locking emulation mode. (The problem being that AFS3 only 416c6c1d63SDavid Howells * allows whole-file locks and no upgrading/downgrading). 426c6c1d63SDavid Howells */ 436c6c1d63SDavid Howells enum afs_flock_mode { 446c6c1d63SDavid Howells afs_flock_mode_unset, 456c6c1d63SDavid Howells afs_flock_mode_local, /* Local locking only */ 466c6c1d63SDavid Howells afs_flock_mode_openafs, /* Don't get server lock for a partial lock */ 476c6c1d63SDavid Howells afs_flock_mode_strict, /* Always get a server lock for a partial lock */ 486c6c1d63SDavid Howells afs_flock_mode_write, /* Get an exclusive server lock for a partial lock */ 496c6c1d63SDavid Howells }; 506c6c1d63SDavid Howells 5113fcc683SDavid Howells struct afs_fs_context { 5200d3b7a4SDavid Howells bool force; /* T to force cell type */ 53bec5eb61Swanglei bool autocell; /* T if set auto mount operation */ 544d673da1SDavid Howells bool dyn_root; /* T if dynamic root */ 5513fcc683SDavid Howells bool no_cell; /* T if the source is "none" (for dynroot) */ 566c6c1d63SDavid Howells enum afs_flock_mode flock_mode; /* Partial file-locking emulation mode */ 5700d3b7a4SDavid Howells afs_voltype_t type; /* type of volume requested */ 5813fcc683SDavid Howells unsigned int volnamesz; /* size of volume name */ 5900d3b7a4SDavid Howells const char *volname; /* name of volume to mount */ 605b86d4ffSDavid Howells struct afs_net *net; /* the AFS net namespace stuff */ 6100d3b7a4SDavid Howells struct afs_cell *cell; /* cell in which to find volume */ 6200d3b7a4SDavid Howells struct afs_volume *volume; /* volume record */ 6300d3b7a4SDavid Howells struct key *key; /* key to use for secure mounting */ 6400d3b7a4SDavid Howells }; 6500d3b7a4SDavid Howells 66c435ee34SDavid Howells struct afs_iget_data { 67c435ee34SDavid Howells struct afs_fid fid; 68c435ee34SDavid Howells struct afs_volume *volume; /* volume on which resides */ 69c435ee34SDavid Howells }; 70c435ee34SDavid Howells 718e8d7f13SDavid Howells enum afs_call_state { 7298bf40cdSDavid Howells AFS_CALL_CL_REQUESTING, /* Client: Request is being sent */ 7398bf40cdSDavid Howells AFS_CALL_CL_AWAIT_REPLY, /* Client: Awaiting reply */ 7498bf40cdSDavid Howells AFS_CALL_CL_PROC_REPLY, /* Client: rxrpc call complete; processing reply */ 7598bf40cdSDavid Howells AFS_CALL_SV_AWAIT_OP_ID, /* Server: Awaiting op ID */ 7698bf40cdSDavid Howells AFS_CALL_SV_AWAIT_REQUEST, /* Server: Awaiting request data */ 7798bf40cdSDavid Howells AFS_CALL_SV_REPLYING, /* Server: Replying */ 7898bf40cdSDavid Howells AFS_CALL_SV_AWAIT_ACK, /* Server: Awaiting final ACK */ 798e8d7f13SDavid Howells AFS_CALL_COMPLETE, /* Completed or failed */ 808e8d7f13SDavid Howells }; 81f044c884SDavid Howells 8208e0e7c8SDavid Howells /* 838b2a464cSDavid Howells * List of server addresses. 848b2a464cSDavid Howells */ 858b2a464cSDavid Howells struct afs_addr_list { 868b2a464cSDavid Howells struct rcu_head rcu; /* Must be first */ 878b2a464cSDavid Howells refcount_t usage; 88d2ddc776SDavid Howells u32 version; /* Version */ 8968eb64c3SDavid Howells unsigned char max_addrs; 9068eb64c3SDavid Howells unsigned char nr_addrs; 913bf0fb6fSDavid Howells unsigned char preferred; /* Preferred address */ 9268eb64c3SDavid Howells unsigned char nr_ipv4; /* Number of IPv4 addresses */ 930a5143f2SDavid Howells enum dns_record_source source:8; 940a5143f2SDavid Howells enum dns_lookup_status status:8; 95bf99a53cSDavid Howells unsigned long probed; /* Mask of servers that have been probed */ 963bf0fb6fSDavid Howells unsigned long failed; /* Mask of addrs that failed locally/ICMP */ 973bf0fb6fSDavid Howells unsigned long responded; /* Mask of addrs that responded */ 988b2a464cSDavid Howells struct sockaddr_rxrpc addrs[]; 9968eb64c3SDavid Howells #define AFS_MAX_ADDRESSES ((unsigned int)(sizeof(unsigned long) * 8)) 1008b2a464cSDavid Howells }; 1018b2a464cSDavid Howells 1028b2a464cSDavid Howells /* 10308e0e7c8SDavid Howells * a record of an in-progress RxRPC call 10408e0e7c8SDavid Howells */ 10508e0e7c8SDavid Howells struct afs_call { 10608e0e7c8SDavid Howells const struct afs_call_type *type; /* type of call */ 1073bf0fb6fSDavid Howells struct afs_addr_list *alist; /* Address is alist[addr_ix] */ 10808e0e7c8SDavid Howells wait_queue_head_t waitq; /* processes awaiting completion */ 109341f741fSDavid Howells struct work_struct async_work; /* async I/O processor */ 11008e0e7c8SDavid Howells struct work_struct work; /* actual work processor */ 11108e0e7c8SDavid Howells struct rxrpc_call *rxcall; /* RxRPC call handle */ 11208e0e7c8SDavid Howells struct key *key; /* security for this call */ 113f044c884SDavid Howells struct afs_net *net; /* The network namespace */ 114ffba718eSDavid Howells union { 115ffba718eSDavid Howells struct afs_server *server; 116ffba718eSDavid Howells struct afs_vlserver *vlserver; 117ffba718eSDavid Howells }; 118d2ddc776SDavid Howells struct afs_cb_interest *cbi; /* Callback interest for server used */ 119a58823acSDavid Howells struct afs_vnode *lvnode; /* vnode being locked */ 12008e0e7c8SDavid Howells void *request; /* request data (first part) */ 1214343d008SDavid Howells struct address_space *mapping; /* Pages being written from */ 12212bdcf33SDavid Howells struct iov_iter iter; /* Buffer iterator */ 12312bdcf33SDavid Howells struct iov_iter *_iter; /* Iterator currently in use */ 12412bdcf33SDavid Howells union { /* Convenience for ->iter */ 12512bdcf33SDavid Howells struct kvec kvec[1]; 12612bdcf33SDavid Howells struct bio_vec bvec[1]; 12712bdcf33SDavid Howells }; 12808e0e7c8SDavid Howells void *buffer; /* reply receive buffer */ 129ffba718eSDavid Howells union { 130ffba718eSDavid Howells long ret0; /* Value to reply with instead of 0 */ 131ffba718eSDavid Howells struct afs_addr_list *ret_alist; 132ffba718eSDavid Howells struct afs_vldb_entry *ret_vldb; 133ffba718eSDavid Howells struct afs_acl *ret_acl; 134ffba718eSDavid Howells }; 135ffba718eSDavid Howells struct afs_fid *out_fid; 136a58823acSDavid Howells struct afs_status_cb *out_dir_scb; 13787182759SDavid Howells struct afs_status_cb *out_scb; 138ffba718eSDavid Howells struct yfs_acl *out_yacl; 139ffba718eSDavid Howells struct afs_volsync *out_volsync; 140ffba718eSDavid Howells struct afs_volume_status *out_volstatus; 141ffba718eSDavid Howells struct afs_read *read_request; 142ffba718eSDavid Howells unsigned int server_index; 14331143d5dSDavid Howells pgoff_t first; /* first page in mapping to deal with */ 14431143d5dSDavid Howells pgoff_t last; /* last page in mapping to deal with */ 145341f741fSDavid Howells atomic_t usage; 1468e8d7f13SDavid Howells enum afs_call_state state; 14798bf40cdSDavid Howells spinlock_t state_lock; 14808e0e7c8SDavid Howells int error; /* error code */ 149d001648eSDavid Howells u32 abort_code; /* Remote abort ID or 0 */ 1503bf0fb6fSDavid Howells u32 epoch; 15194f699c9SDavid Howells unsigned int max_lifespan; /* Maximum lifespan to set if not 0 */ 15208e0e7c8SDavid Howells unsigned request_size; /* size of request data */ 15308e0e7c8SDavid Howells unsigned reply_max; /* maximum size of reply */ 15431143d5dSDavid Howells unsigned first_offset; /* offset into mapping[first] */ 155bcd89270SMarc Dionne union { 15631143d5dSDavid Howells unsigned last_to; /* amount of mapping[last] */ 157bcd89270SMarc Dionne unsigned count2; /* count used in unmarshalling */ 158bcd89270SMarc Dionne }; 15908e0e7c8SDavid Howells unsigned char unmarshall; /* unmarshalling phase */ 1603bf0fb6fSDavid Howells unsigned char addr_ix; /* Address in ->alist */ 16108e0e7c8SDavid Howells bool incoming; /* T if incoming call */ 16231143d5dSDavid Howells bool send_pages; /* T if data from mapping should be sent */ 163d001648eSDavid Howells bool need_attention; /* T if RxRPC poked us */ 16456ff9c83SDavid Howells bool async; /* T if asynchronous */ 165a68f4a27SDavid Howells bool upgrade; /* T to request service upgrade */ 1664571577fSDavid Howells bool have_reply_time; /* T if have got reply_time */ 16720b8391fSDavid Howells bool intr; /* T if interruptible */ 168bf99a53cSDavid Howells u16 service_id; /* Actual service ID (after upgrade) */ 169a25e21f0SDavid Howells unsigned int debug_id; /* Trace ID */ 17050a2c953SDavid Howells u32 operation_ID; /* operation ID for an incoming call */ 17108e0e7c8SDavid Howells u32 count; /* count for use in unmarshalling */ 17212bdcf33SDavid Howells union { /* place to extract temporary data */ 17312bdcf33SDavid Howells struct { 17412bdcf33SDavid Howells __be32 tmp_u; 17512bdcf33SDavid Howells __be32 tmp; 17612bdcf33SDavid Howells } __attribute__((packed)); 17712bdcf33SDavid Howells __be64 tmp64; 17812bdcf33SDavid Howells }; 17912d8e95aSDavid Howells ktime_t reply_time; /* Time of first reply packet */ 18008e0e7c8SDavid Howells }; 18108e0e7c8SDavid Howells 18208e0e7c8SDavid Howells struct afs_call_type { 18300d3b7a4SDavid Howells const char *name; 184025db80cSDavid Howells unsigned int op; /* Really enum afs_fs_operation */ 18500d3b7a4SDavid Howells 18608e0e7c8SDavid Howells /* deliver request or reply data to an call 18708e0e7c8SDavid Howells * - returning an error will cause the call to be aborted 18808e0e7c8SDavid Howells */ 189d001648eSDavid Howells int (*deliver)(struct afs_call *call); 19008e0e7c8SDavid Howells 19108e0e7c8SDavid Howells /* clean up a call */ 19208e0e7c8SDavid Howells void (*destructor)(struct afs_call *call); 193341f741fSDavid Howells 194341f741fSDavid Howells /* Work function */ 195341f741fSDavid Howells void (*work)(struct work_struct *work); 1963bf0fb6fSDavid Howells 1973bf0fb6fSDavid Howells /* Call done function (gets called immediately on success or failure) */ 1983bf0fb6fSDavid Howells void (*done)(struct afs_call *call); 19908e0e7c8SDavid Howells }; 20008e0e7c8SDavid Howells 20108e0e7c8SDavid Howells /* 2024343d008SDavid Howells * Key available for writeback on a file. 2034343d008SDavid Howells */ 2044343d008SDavid Howells struct afs_wb_key { 2054343d008SDavid Howells refcount_t usage; 2064343d008SDavid Howells struct key *key; 2074343d008SDavid Howells struct list_head vnode_link; /* Link in vnode->wb_keys */ 2084343d008SDavid Howells }; 2094343d008SDavid Howells 2104343d008SDavid Howells /* 211215804a9SDavid Howells * AFS open file information record. Pointed to by file->private_data. 212215804a9SDavid Howells */ 213215804a9SDavid Howells struct afs_file { 214215804a9SDavid Howells struct key *key; /* The key this file was opened with */ 2154343d008SDavid Howells struct afs_wb_key *wb; /* Writeback key record for this file */ 216215804a9SDavid Howells }; 217215804a9SDavid Howells 218215804a9SDavid Howells static inline struct key *afs_file_key(struct file *file) 219215804a9SDavid Howells { 220215804a9SDavid Howells struct afs_file *af = file->private_data; 221215804a9SDavid Howells 222215804a9SDavid Howells return af->key; 223215804a9SDavid Howells } 224215804a9SDavid Howells 225215804a9SDavid Howells /* 226196ee9cdSDavid Howells * Record of an outstanding read operation on a vnode. 227196ee9cdSDavid Howells */ 228196ee9cdSDavid Howells struct afs_read { 229196ee9cdSDavid Howells loff_t pos; /* Where to start reading */ 230e8e581a8SDavid Howells loff_t len; /* How much we're asking for */ 231196ee9cdSDavid Howells loff_t actual_len; /* How much we're actually getting */ 2326a0e3999SDavid Howells loff_t remain; /* Amount remaining */ 233f3ddee8dSDavid Howells loff_t file_size; /* File size returned by server */ 234f3ddee8dSDavid Howells afs_dataversion_t data_version; /* Version number returned by server */ 235f3ddee8dSDavid Howells refcount_t usage; 236196ee9cdSDavid Howells unsigned int index; /* Which page we're reading into */ 237196ee9cdSDavid Howells unsigned int nr_pages; 23812bdcf33SDavid Howells unsigned int offset; /* offset into current page */ 239a58823acSDavid Howells struct afs_vnode *vnode; 240a58823acSDavid Howells void (*page_done)(struct afs_read *); 241f3ddee8dSDavid Howells struct page **pages; 242f3ddee8dSDavid Howells struct page *array[]; 243196ee9cdSDavid Howells }; 244196ee9cdSDavid Howells 245196ee9cdSDavid Howells /* 24608e0e7c8SDavid Howells * AFS superblock private data 24708e0e7c8SDavid Howells * - there's one superblock per volume 24808e0e7c8SDavid Howells */ 24908e0e7c8SDavid Howells struct afs_super_info { 2505b86d4ffSDavid Howells struct net *net_ns; /* Network namespace */ 25149566f6fSDavid Howells struct afs_cell *cell; /* The cell in which the volume resides */ 25208e0e7c8SDavid Howells struct afs_volume *volume; /* volume record */ 2536c6c1d63SDavid Howells enum afs_flock_mode flock_mode:8; /* File locking emulation mode */ 2544d673da1SDavid Howells bool dyn_root; /* True if dynamic root */ 25508e0e7c8SDavid Howells }; 25608e0e7c8SDavid Howells 25708e0e7c8SDavid Howells static inline struct afs_super_info *AFS_FS_S(struct super_block *sb) 25808e0e7c8SDavid Howells { 25908e0e7c8SDavid Howells return sb->s_fs_info; 26008e0e7c8SDavid Howells } 26108e0e7c8SDavid Howells 26208e0e7c8SDavid Howells extern struct file_system_type afs_fs_type; 26308e0e7c8SDavid Howells 26408e0e7c8SDavid Howells /* 2656f8880d8SDavid Howells * Set of substitutes for @sys. 2666f8880d8SDavid Howells */ 2676f8880d8SDavid Howells struct afs_sysnames { 2686f8880d8SDavid Howells #define AFS_NR_SYSNAME 16 2696f8880d8SDavid Howells char *subs[AFS_NR_SYSNAME]; 2706f8880d8SDavid Howells refcount_t usage; 2716f8880d8SDavid Howells unsigned short nr; 2726f8880d8SDavid Howells char blank[1]; 2736f8880d8SDavid Howells }; 2746f8880d8SDavid Howells 2756f8880d8SDavid Howells /* 276f044c884SDavid Howells * AFS network namespace record. 277f044c884SDavid Howells */ 278f044c884SDavid Howells struct afs_net { 2795b86d4ffSDavid Howells struct net *net; /* Backpointer to the owning net namespace */ 280f044c884SDavid Howells struct afs_uuid uuid; 281f044c884SDavid Howells bool live; /* F if this namespace is being removed */ 282f044c884SDavid Howells 283f044c884SDavid Howells /* AF_RXRPC I/O stuff */ 284f044c884SDavid Howells struct socket *socket; 285f044c884SDavid Howells struct afs_call *spare_incoming_call; 286f044c884SDavid Howells struct work_struct charge_preallocation_work; 287f044c884SDavid Howells struct mutex socket_mutex; 288f044c884SDavid Howells atomic_t nr_outstanding_calls; 289f044c884SDavid Howells atomic_t nr_superblocks; 290f044c884SDavid Howells 291f044c884SDavid Howells /* Cell database */ 292989782dcSDavid Howells struct rb_root cells; 2931588def9SDavid Howells struct afs_cell __rcu *ws_cell; 294989782dcSDavid Howells struct work_struct cells_manager; 295989782dcSDavid Howells struct timer_list cells_timer; 296989782dcSDavid Howells atomic_t cells_outstanding; 297989782dcSDavid Howells seqlock_t cells_lock; 298f044c884SDavid Howells 2990da0b7fdSDavid Howells struct mutex proc_cells_lock; 3006b3944e4SDavid Howells struct hlist_head proc_cells; 301f044c884SDavid Howells 302d2ddc776SDavid Howells /* Known servers. Theoretically each fileserver can only be in one 303d2ddc776SDavid Howells * cell, but in practice, people create aliases and subsets and there's 304d2ddc776SDavid Howells * no easy way to distinguish them. 305d2ddc776SDavid Howells */ 306d2ddc776SDavid Howells seqlock_t fs_lock; /* For fs_servers */ 307d2ddc776SDavid Howells struct rb_root fs_servers; /* afs_server (by server UUID or address) */ 308d2ddc776SDavid Howells struct list_head fs_updates; /* afs_server (by update_at) */ 309d2ddc776SDavid Howells struct hlist_head fs_proc; /* procfs servers list */ 310d2ddc776SDavid Howells 311d2ddc776SDavid Howells struct hlist_head fs_addresses4; /* afs_server (by lowest IPv4 addr) */ 312d2ddc776SDavid Howells struct hlist_head fs_addresses6; /* afs_server (by lowest IPv6 addr) */ 313d2ddc776SDavid Howells seqlock_t fs_addr_lock; /* For fs_addresses[46] */ 314d2ddc776SDavid Howells 315d2ddc776SDavid Howells struct work_struct fs_manager; 316d2ddc776SDavid Howells struct timer_list fs_timer; 317d2ddc776SDavid Howells atomic_t servers_outstanding; 318f044c884SDavid Howells 319f044c884SDavid Howells /* File locking renewal management */ 320f044c884SDavid Howells struct mutex lock_manager_mutex; 321f044c884SDavid Howells 322f044c884SDavid Howells /* Misc */ 3230da0b7fdSDavid Howells struct super_block *dynroot_sb; /* Dynamic root mount superblock */ 324f044c884SDavid Howells struct proc_dir_entry *proc_afs; /* /proc/net/afs directory */ 3256f8880d8SDavid Howells struct afs_sysnames *sysnames; 3266f8880d8SDavid Howells rwlock_t sysnames_lock; 327d55b4da4SDavid Howells 328d55b4da4SDavid Howells /* Statistics counters */ 329d55b4da4SDavid Howells atomic_t n_lookup; /* Number of lookups done */ 330d55b4da4SDavid Howells atomic_t n_reval; /* Number of dentries needing revalidation */ 331d55b4da4SDavid Howells atomic_t n_inval; /* Number of invalidations by the server */ 332f3ddee8dSDavid Howells atomic_t n_relpg; /* Number of invalidations by releasepage */ 333d55b4da4SDavid Howells atomic_t n_read_dir; /* Number of directory pages read */ 33463a4681fSDavid Howells atomic_t n_dir_cr; /* Number of directory entry creation edits */ 33563a4681fSDavid Howells atomic_t n_dir_rm; /* Number of directory entry removal edits */ 33676a5cb6fSDavid Howells atomic_t n_stores; /* Number of store ops */ 33776a5cb6fSDavid Howells atomic_long_t n_store_bytes; /* Number of bytes stored */ 33876a5cb6fSDavid Howells atomic_long_t n_fetch_bytes; /* Number of bytes fetched */ 33976a5cb6fSDavid Howells atomic_t n_fetches; /* Number of data fetch ops */ 340f044c884SDavid Howells }; 341f044c884SDavid Howells 3426f8880d8SDavid Howells extern const char afs_init_sysname[]; 343f044c884SDavid Howells 344989782dcSDavid Howells enum afs_cell_state { 345989782dcSDavid Howells AFS_CELL_UNSET, 346989782dcSDavid Howells AFS_CELL_ACTIVATING, 347989782dcSDavid Howells AFS_CELL_ACTIVE, 348989782dcSDavid Howells AFS_CELL_DEACTIVATING, 349989782dcSDavid Howells AFS_CELL_INACTIVE, 350989782dcSDavid Howells AFS_CELL_FAILED, 351989782dcSDavid Howells }; 352989782dcSDavid Howells 353f044c884SDavid Howells /* 354d2ddc776SDavid Howells * AFS cell record. 355d2ddc776SDavid Howells * 356d2ddc776SDavid Howells * This is a tricky concept to get right as it is possible to create aliases 357d2ddc776SDavid Howells * simply by pointing AFSDB/SRV records for two names at the same set of VL 358d2ddc776SDavid Howells * servers; it is also possible to do things like setting up two sets of VL 359d2ddc776SDavid Howells * servers, one of which provides a superset of the volumes provided by the 360d2ddc776SDavid Howells * other (for internal/external division, for example). 361d2ddc776SDavid Howells * 362d2ddc776SDavid Howells * Cells only exist in the sense that (a) a cell's name maps to a set of VL 363d2ddc776SDavid Howells * servers and (b) a cell's name is used by the client to select the key to use 364d2ddc776SDavid Howells * for authentication and encryption. The cell name is not typically used in 365d2ddc776SDavid Howells * the protocol. 366d2ddc776SDavid Howells * 367d2ddc776SDavid Howells * There is no easy way to determine if two cells are aliases or one is a 368d2ddc776SDavid Howells * subset of another. 36908e0e7c8SDavid Howells */ 37008e0e7c8SDavid Howells struct afs_cell { 371989782dcSDavid Howells union { 372989782dcSDavid Howells struct rcu_head rcu; 373989782dcSDavid Howells struct rb_node net_node; /* Node in net->cells */ 374989782dcSDavid Howells }; 375989782dcSDavid Howells struct afs_net *net; 37600d3b7a4SDavid Howells struct key *anonymous_key; /* anonymous user key for this cell */ 377989782dcSDavid Howells struct work_struct manager; /* Manager for init/deinit/dns */ 3786b3944e4SDavid Howells struct hlist_node proc_link; /* /proc cell list link */ 3799b3f26c9SDavid Howells #ifdef CONFIG_AFS_FSCACHE 3809b3f26c9SDavid Howells struct fscache_cookie *cache; /* caching cookie */ 3811da177e4SLinus Torvalds #endif 382989782dcSDavid Howells time64_t dns_expiry; /* Time AFSDB/SRV record expires */ 383989782dcSDavid Howells time64_t last_inactive; /* Time of last drop of usage count */ 384989782dcSDavid Howells atomic_t usage; 385989782dcSDavid Howells unsigned long flags; 386d5c32c89SDavid Howells #define AFS_CELL_FL_NO_GC 0 /* The cell was added manually, don't auto-gc */ 387d5c32c89SDavid Howells #define AFS_CELL_FL_DO_LOOKUP 1 /* DNS lookup requested */ 388989782dcSDavid Howells enum afs_cell_state state; 389989782dcSDavid Howells short error; 390d5c32c89SDavid Howells enum dns_record_source dns_source:8; /* Latest source of data from lookup */ 391d5c32c89SDavid Howells enum dns_lookup_status dns_status:8; /* Latest status of data from lookup */ 392d5c32c89SDavid Howells unsigned int dns_lookup_count; /* Counter of DNS lookups */ 393989782dcSDavid Howells 394d2ddc776SDavid Howells /* Active fileserver interaction state. */ 395d2ddc776SDavid Howells struct list_head proc_volumes; /* procfs volume list */ 396d2ddc776SDavid Howells rwlock_t proc_lock; 397989782dcSDavid Howells 398d2ddc776SDavid Howells /* VL server list. */ 3990a5143f2SDavid Howells rwlock_t vl_servers_lock; /* Lock on vl_servers */ 4000a5143f2SDavid Howells struct afs_vlserver_list __rcu *vl_servers; 4010a5143f2SDavid Howells 402989782dcSDavid Howells u8 name_len; /* Length of name */ 403989782dcSDavid Howells char name[64 + 1]; /* Cell name, case-flattened and NUL-padded */ 40408e0e7c8SDavid Howells }; 40508e0e7c8SDavid Howells 40608e0e7c8SDavid Howells /* 4070a5143f2SDavid Howells * Volume Location server record. 4080a5143f2SDavid Howells */ 4090a5143f2SDavid Howells struct afs_vlserver { 4100a5143f2SDavid Howells struct rcu_head rcu; 4110a5143f2SDavid Howells struct afs_addr_list __rcu *addresses; /* List of addresses for this VL server */ 4120a5143f2SDavid Howells unsigned long flags; 4130a5143f2SDavid Howells #define AFS_VLSERVER_FL_PROBED 0 /* The VL server has been probed */ 4140a5143f2SDavid Howells #define AFS_VLSERVER_FL_PROBING 1 /* VL server is being probed */ 4153bf0fb6fSDavid Howells #define AFS_VLSERVER_FL_IS_YFS 2 /* Server is YFS not AFS */ 4160a5143f2SDavid Howells rwlock_t lock; /* Lock on addresses */ 4170a5143f2SDavid Howells atomic_t usage; 4183bf0fb6fSDavid Howells 4193bf0fb6fSDavid Howells /* Probe state */ 4203bf0fb6fSDavid Howells wait_queue_head_t probe_wq; 4213bf0fb6fSDavid Howells atomic_t probe_outstanding; 4223bf0fb6fSDavid Howells spinlock_t probe_lock; 4233bf0fb6fSDavid Howells struct { 4243bf0fb6fSDavid Howells unsigned int rtt; /* RTT as ktime/64 */ 4253bf0fb6fSDavid Howells u32 abort_code; 4263bf0fb6fSDavid Howells short error; 4273bf0fb6fSDavid Howells bool have_result; 4283bf0fb6fSDavid Howells bool responded:1; 4293bf0fb6fSDavid Howells bool is_yfs:1; 4303bf0fb6fSDavid Howells bool not_yfs:1; 4313bf0fb6fSDavid Howells bool local_failure:1; 4323bf0fb6fSDavid Howells } probe; 4333bf0fb6fSDavid Howells 4340a5143f2SDavid Howells u16 port; 4353bf0fb6fSDavid Howells u16 name_len; /* Length of name */ 4360a5143f2SDavid Howells char name[]; /* Server name, case-flattened */ 4370a5143f2SDavid Howells }; 4380a5143f2SDavid Howells 4390a5143f2SDavid Howells /* 4400a5143f2SDavid Howells * Weighted list of Volume Location servers. 4410a5143f2SDavid Howells */ 4420a5143f2SDavid Howells struct afs_vlserver_entry { 4430a5143f2SDavid Howells u16 priority; /* Preference (as SRV) */ 4440a5143f2SDavid Howells u16 weight; /* Weight (as SRV) */ 4450a5143f2SDavid Howells enum dns_record_source source:8; 4460a5143f2SDavid Howells enum dns_lookup_status status:8; 4470a5143f2SDavid Howells struct afs_vlserver *server; 4480a5143f2SDavid Howells }; 4490a5143f2SDavid Howells 4500a5143f2SDavid Howells struct afs_vlserver_list { 4510a5143f2SDavid Howells struct rcu_head rcu; 4520a5143f2SDavid Howells atomic_t usage; 4530a5143f2SDavid Howells u8 nr_servers; 4540a5143f2SDavid Howells u8 index; /* Server currently in use */ 4553bf0fb6fSDavid Howells u8 preferred; /* Preferred server */ 4560a5143f2SDavid Howells enum dns_record_source source:8; 4570a5143f2SDavid Howells enum dns_lookup_status status:8; 4580a5143f2SDavid Howells rwlock_t lock; 4590a5143f2SDavid Howells struct afs_vlserver_entry servers[]; 4600a5143f2SDavid Howells }; 4610a5143f2SDavid Howells 4620a5143f2SDavid Howells /* 463d2ddc776SDavid Howells * Cached VLDB entry. 464d2ddc776SDavid Howells * 465d2ddc776SDavid Howells * This is pointed to by cell->vldb_entries, indexed by name. 46608e0e7c8SDavid Howells */ 467d2ddc776SDavid Howells struct afs_vldb_entry { 468d2ddc776SDavid Howells afs_volid_t vid[3]; /* Volume IDs for R/W, R/O and Bak volumes */ 46900d3b7a4SDavid Howells 470d2ddc776SDavid Howells unsigned long flags; 471d2ddc776SDavid Howells #define AFS_VLDB_HAS_RW 0 /* - R/W volume exists */ 472d2ddc776SDavid Howells #define AFS_VLDB_HAS_RO 1 /* - R/O volume exists */ 473d2ddc776SDavid Howells #define AFS_VLDB_HAS_BAK 2 /* - Backup volume exists */ 474d2ddc776SDavid Howells #define AFS_VLDB_QUERY_VALID 3 /* - Record is valid */ 475d2ddc776SDavid Howells #define AFS_VLDB_QUERY_ERROR 4 /* - VL server returned error */ 476d2ddc776SDavid Howells 477d2ddc776SDavid Howells uuid_t fs_server[AFS_NMAXNSERVERS]; 478d2ddc776SDavid Howells u8 fs_mask[AFS_NMAXNSERVERS]; 47908e0e7c8SDavid Howells #define AFS_VOL_VTM_RW 0x01 /* R/W version of the volume is available (on this server) */ 48008e0e7c8SDavid Howells #define AFS_VOL_VTM_RO 0x02 /* R/O version of the volume is available (on this server) */ 48108e0e7c8SDavid Howells #define AFS_VOL_VTM_BAK 0x04 /* backup version of the volume is available (on this server) */ 482d2ddc776SDavid Howells short error; 483d2ddc776SDavid Howells u8 nr_servers; /* Number of server records */ 484d2ddc776SDavid Howells u8 name_len; 485d2ddc776SDavid Howells u8 name[AFS_MAXVOLNAME + 1]; /* NUL-padded volume name */ 48608e0e7c8SDavid Howells }; 48708e0e7c8SDavid Howells 48808e0e7c8SDavid Howells /* 489d2ddc776SDavid Howells * Record of fileserver with which we're actively communicating. 49008e0e7c8SDavid Howells */ 49108e0e7c8SDavid Howells struct afs_server { 492d2ddc776SDavid Howells struct rcu_head rcu; 493d2ddc776SDavid Howells union { 494d2ddc776SDavid Howells uuid_t uuid; /* Server ID */ 495d2ddc776SDavid Howells struct afs_uuid _uuid; 496d2ddc776SDavid Howells }; 497c435ee34SDavid Howells 498d2ddc776SDavid Howells struct afs_addr_list __rcu *addresses; 499d2ddc776SDavid Howells struct rb_node uuid_rb; /* Link in net->servers */ 500d2ddc776SDavid Howells struct hlist_node addr4_link; /* Link in net->fs_addresses4 */ 501d2ddc776SDavid Howells struct hlist_node addr6_link; /* Link in net->fs_addresses6 */ 502d2ddc776SDavid Howells struct hlist_node proc_link; /* Link in net->fs_proc */ 503d2ddc776SDavid Howells struct afs_server *gc_next; /* Next server in manager's list */ 504d2ddc776SDavid Howells time64_t put_time; /* Time at which last put */ 505d2ddc776SDavid Howells time64_t update_at; /* Time at which to next update the record */ 506c435ee34SDavid Howells unsigned long flags; 507d2ddc776SDavid Howells #define AFS_SERVER_FL_NOT_READY 1 /* The record is not ready for use */ 508d2ddc776SDavid Howells #define AFS_SERVER_FL_NOT_FOUND 2 /* VL server says no such server */ 509d2ddc776SDavid Howells #define AFS_SERVER_FL_VL_FAIL 3 /* Failed to access VL server */ 510d2ddc776SDavid Howells #define AFS_SERVER_FL_UPDATING 4 511d2ddc776SDavid Howells #define AFS_SERVER_FL_PROBED 5 /* The fileserver has been probed */ 512d2ddc776SDavid Howells #define AFS_SERVER_FL_PROBING 6 /* Fileserver is being probed */ 5135cf9dd55SDavid Howells #define AFS_SERVER_FL_NO_IBULK 7 /* Fileserver doesn't support FS.InlineBulkStatus */ 514f2686b09SDavid Howells #define AFS_SERVER_FL_MAY_HAVE_CB 8 /* May have callbacks on this fileserver */ 51530062bd1SDavid Howells #define AFS_SERVER_FL_IS_YFS 9 /* Server is YFS not AFS */ 51630062bd1SDavid Howells #define AFS_SERVER_FL_NO_RM2 10 /* Fileserver doesn't support YFS.RemoveFile2 */ 5173bf0fb6fSDavid Howells #define AFS_SERVER_FL_HAVE_EPOCH 11 /* ->epoch is valid */ 518d2ddc776SDavid Howells atomic_t usage; 519d2ddc776SDavid Howells u32 addr_version; /* Address list version */ 5203bf0fb6fSDavid Howells u32 cm_epoch; /* Server RxRPC epoch */ 52108e0e7c8SDavid Howells 52208e0e7c8SDavid Howells /* file service access */ 523d2ddc776SDavid Howells rwlock_t fs_lock; /* access lock */ 52408e0e7c8SDavid Howells 52508e0e7c8SDavid Howells /* callback promise management */ 52647ea0f2eSDavid Howells struct hlist_head cb_volumes; /* List of volume interests on this server */ 527c435ee34SDavid Howells unsigned cb_s_break; /* Break-everything counter. */ 528c435ee34SDavid Howells rwlock_t cb_break_lock; /* Volume finding lock */ 5293bf0fb6fSDavid Howells 5303bf0fb6fSDavid Howells /* Probe state */ 5313bf0fb6fSDavid Howells wait_queue_head_t probe_wq; 5323bf0fb6fSDavid Howells atomic_t probe_outstanding; 5333bf0fb6fSDavid Howells spinlock_t probe_lock; 5343bf0fb6fSDavid Howells struct { 5353bf0fb6fSDavid Howells unsigned int rtt; /* RTT as ktime/64 */ 5363bf0fb6fSDavid Howells u32 abort_code; 5373bf0fb6fSDavid Howells u32 cm_epoch; 5383bf0fb6fSDavid Howells short error; 5393bf0fb6fSDavid Howells bool have_result; 5403bf0fb6fSDavid Howells bool responded:1; 5413bf0fb6fSDavid Howells bool is_yfs:1; 5423bf0fb6fSDavid Howells bool not_yfs:1; 5433bf0fb6fSDavid Howells bool local_failure:1; 5443bf0fb6fSDavid Howells bool no_epoch:1; 5453bf0fb6fSDavid Howells bool cm_probed:1; 5463bf0fb6fSDavid Howells bool said_rebooted:1; 5473bf0fb6fSDavid Howells bool said_inconsistent:1; 5483bf0fb6fSDavid Howells } probe; 549c435ee34SDavid Howells }; 550c435ee34SDavid Howells 551c435ee34SDavid Howells /* 55247ea0f2eSDavid Howells * Volume collation in the server's callback interest list. 55347ea0f2eSDavid Howells */ 55447ea0f2eSDavid Howells struct afs_vol_interest { 55547ea0f2eSDavid Howells struct hlist_node srv_link; /* Link in server->cb_volumes */ 55647ea0f2eSDavid Howells struct hlist_head cb_interests; /* List of callback interests on the server */ 55747ea0f2eSDavid Howells afs_volid_t vid; /* Volume ID to match */ 55847ea0f2eSDavid Howells unsigned int usage; 55947ea0f2eSDavid Howells }; 56047ea0f2eSDavid Howells 56147ea0f2eSDavid Howells /* 562c435ee34SDavid Howells * Interest by a superblock on a server. 563c435ee34SDavid Howells */ 564c435ee34SDavid Howells struct afs_cb_interest { 56547ea0f2eSDavid Howells struct hlist_node cb_vlink; /* Link in vol_interest->cb_interests */ 56647ea0f2eSDavid Howells struct afs_vol_interest *vol_interest; 567c435ee34SDavid Howells struct afs_server *server; /* Server on which this interest resides */ 568c435ee34SDavid Howells struct super_block *sb; /* Superblock on which inodes reside */ 569c435ee34SDavid Howells afs_volid_t vid; /* Volume ID to match */ 570c435ee34SDavid Howells refcount_t usage; 57108e0e7c8SDavid Howells }; 57208e0e7c8SDavid Howells 57308e0e7c8SDavid Howells /* 574d2ddc776SDavid Howells * Replaceable server list. 57508e0e7c8SDavid Howells */ 576d2ddc776SDavid Howells struct afs_server_entry { 577d2ddc776SDavid Howells struct afs_server *server; 578d2ddc776SDavid Howells struct afs_cb_interest *cb_interest; 579d2ddc776SDavid Howells }; 580d2ddc776SDavid Howells 581d2ddc776SDavid Howells struct afs_server_list { 582d2ddc776SDavid Howells refcount_t usage; 5833bf0fb6fSDavid Howells unsigned char nr_servers; 5843bf0fb6fSDavid Howells unsigned char preferred; /* Preferred server */ 585d2ddc776SDavid Howells unsigned short vnovol_mask; /* Servers to be skipped due to VNOVOL */ 586d2ddc776SDavid Howells unsigned int seq; /* Set to ->servers_seq when installed */ 587d4a96becSDavid Howells rwlock_t lock; 588d2ddc776SDavid Howells struct afs_server_entry servers[]; 58908e0e7c8SDavid Howells }; 59008e0e7c8SDavid Howells 59108e0e7c8SDavid Howells /* 592d2ddc776SDavid Howells * Live AFS volume management. 59308e0e7c8SDavid Howells */ 594d2ddc776SDavid Howells struct afs_volume { 595d2ddc776SDavid Howells afs_volid_t vid; /* volume ID */ 596d2ddc776SDavid Howells atomic_t usage; 597d2ddc776SDavid Howells time64_t update_at; /* Time at which to next update */ 598d2ddc776SDavid Howells struct afs_cell *cell; /* Cell to which belongs (pins ref) */ 599d2ddc776SDavid Howells struct list_head proc_link; /* Link in cell->vl_proc */ 600d2ddc776SDavid Howells unsigned long flags; 601d2ddc776SDavid Howells #define AFS_VOLUME_NEEDS_UPDATE 0 /* - T if an update needs performing */ 602d2ddc776SDavid Howells #define AFS_VOLUME_UPDATING 1 /* - T if an update is in progress */ 603d2ddc776SDavid Howells #define AFS_VOLUME_WAIT 2 /* - T if users must wait for update */ 604d2ddc776SDavid Howells #define AFS_VOLUME_DELETED 3 /* - T if volume appears deleted */ 605d2ddc776SDavid Howells #define AFS_VOLUME_OFFLINE 4 /* - T if volume offline notice given */ 606d2ddc776SDavid Howells #define AFS_VOLUME_BUSY 5 /* - T if volume busy notice given */ 607d2ddc776SDavid Howells #ifdef CONFIG_AFS_FSCACHE 608d2ddc776SDavid Howells struct fscache_cookie *cache; /* caching cookie */ 609d2ddc776SDavid Howells #endif 610d2ddc776SDavid Howells struct afs_server_list *servers; /* List of servers on which volume resides */ 611d2ddc776SDavid Howells rwlock_t servers_lock; /* Lock for ->servers */ 612d2ddc776SDavid Howells unsigned int servers_seq; /* Incremented each time ->servers changes */ 613d2ddc776SDavid Howells 61468251f0aSDavid Howells unsigned cb_v_break; /* Break-everything counter. */ 61568251f0aSDavid Howells rwlock_t cb_break_lock; 61668251f0aSDavid Howells 617d2ddc776SDavid Howells afs_voltype_t type; /* type of volume */ 618d2ddc776SDavid Howells short error; 619d2ddc776SDavid Howells char type_force; /* force volume type (suppress R/O -> R/W) */ 620d2ddc776SDavid Howells u8 name_len; 621d2ddc776SDavid Howells u8 name[AFS_MAXVOLNAME + 1]; /* NUL-padded volume name */ 62208e0e7c8SDavid Howells }; 62308e0e7c8SDavid Howells 6240fafdc9fSDavid Howells enum afs_lock_state { 6250fafdc9fSDavid Howells AFS_VNODE_LOCK_NONE, /* The vnode has no lock on the server */ 6260fafdc9fSDavid Howells AFS_VNODE_LOCK_WAITING_FOR_CB, /* We're waiting for the server to break the callback */ 6270fafdc9fSDavid Howells AFS_VNODE_LOCK_SETTING, /* We're asking the server for a lock */ 6280fafdc9fSDavid Howells AFS_VNODE_LOCK_GRANTED, /* We have a lock on the server */ 6290fafdc9fSDavid Howells AFS_VNODE_LOCK_EXTENDING, /* We're extending a lock on the server */ 6300fafdc9fSDavid Howells AFS_VNODE_LOCK_NEED_UNLOCK, /* We need to unlock on the server */ 6310fafdc9fSDavid Howells AFS_VNODE_LOCK_UNLOCKING, /* We're telling the server to unlock */ 632cdfb26b4SDavid Howells AFS_VNODE_LOCK_DELETED, /* The vnode has been deleted whilst we have a lock */ 6330fafdc9fSDavid Howells }; 6340fafdc9fSDavid Howells 63508e0e7c8SDavid Howells /* 636f8de483eSDavid Howells * AFS inode private data. 637f8de483eSDavid Howells * 638f8de483eSDavid Howells * Note that afs_alloc_inode() *must* reset anything that could incorrectly 639f8de483eSDavid Howells * leak from one inode to another. 64008e0e7c8SDavid Howells */ 64108e0e7c8SDavid Howells struct afs_vnode { 64208e0e7c8SDavid Howells struct inode vfs_inode; /* the VFS's inode record */ 64308e0e7c8SDavid Howells 64408e0e7c8SDavid Howells struct afs_volume *volume; /* volume on which vnode resides */ 64508e0e7c8SDavid Howells struct afs_fid fid; /* the file identifier for this inode */ 64608e0e7c8SDavid Howells struct afs_file_status status; /* AFS status info for this file */ 647a4ff7401SDavid Howells afs_dataversion_t invalid_before; /* Child dentries are invalid before this */ 6489b3f26c9SDavid Howells #ifdef CONFIG_AFS_FSCACHE 6499b3f26c9SDavid Howells struct fscache_cookie *cache; /* caching cookie */ 65008e0e7c8SDavid Howells #endif 651fe342cf7SDavid Howells struct afs_permits __rcu *permit_cache; /* cache of permits so far obtained */ 652d2ddc776SDavid Howells struct mutex io_lock; /* Lock for serialising I/O on this mutex */ 653b61f7dcfSDavid Howells struct rw_semaphore validate_lock; /* lock for validating this vnode */ 65479ddbfa5SDavid Howells struct rw_semaphore rmdir_lock; /* Lock for rmdir vs sillyrename */ 65579ddbfa5SDavid Howells struct key *silly_key; /* Silly rename key */ 6564343d008SDavid Howells spinlock_t wb_lock; /* lock for wb_keys */ 65708e0e7c8SDavid Howells spinlock_t lock; /* waitqueue/flags lock */ 65808e0e7c8SDavid Howells unsigned long flags; 659c435ee34SDavid Howells #define AFS_VNODE_CB_PROMISED 0 /* Set if vnode has a callback promise */ 660260a9803SDavid Howells #define AFS_VNODE_UNSET 1 /* set if vnode attributes not yet set */ 661f3ddee8dSDavid Howells #define AFS_VNODE_DIR_VALID 2 /* Set if dir contents are valid */ 66208e0e7c8SDavid Howells #define AFS_VNODE_ZAP_DATA 3 /* set if vnode's data should be invalidated */ 66308e0e7c8SDavid Howells #define AFS_VNODE_DELETED 4 /* set if vnode deleted on server */ 66408e0e7c8SDavid Howells #define AFS_VNODE_MOUNTPOINT 5 /* set if vnode is a mountpoint symlink */ 6650fafdc9fSDavid Howells #define AFS_VNODE_AUTOCELL 6 /* set if Vnode is an auto mount point */ 6660fafdc9fSDavid Howells #define AFS_VNODE_PSEUDODIR 7 /* set if Vnode is a pseudo directory */ 6675a813276SDavid Howells #define AFS_VNODE_NEW_CONTENT 8 /* Set if file has new content (create/trunc-0) */ 66808e0e7c8SDavid Howells 6694343d008SDavid Howells struct list_head wb_keys; /* List of keys available for writeback */ 670e8d6c554SDavid Howells struct list_head pending_locks; /* locks waiting to be granted */ 671e8d6c554SDavid Howells struct list_head granted_locks; /* locks granted on this file */ 672e8d6c554SDavid Howells struct delayed_work lock_work; /* work to be done in locking */ 6730fafdc9fSDavid Howells struct key *lock_key; /* Key to be used in lock ops */ 674a690f60aSDavid Howells ktime_t locked_at; /* Time at which lock obtained */ 6750fafdc9fSDavid Howells enum afs_lock_state lock_state : 8; 6760fafdc9fSDavid Howells afs_lock_type_t lock_type : 8; 67731143d5dSDavid Howells 67808e0e7c8SDavid Howells /* outstanding callback notification on this file */ 679c435ee34SDavid Howells struct afs_cb_interest *cb_interest; /* Server on which this resides */ 680c435ee34SDavid Howells unsigned int cb_s_break; /* Mass break counter on ->server */ 68168251f0aSDavid Howells unsigned int cb_v_break; /* Mass break counter on ->volume */ 682c435ee34SDavid Howells unsigned int cb_break; /* Break counter on vnode */ 683c435ee34SDavid Howells seqlock_t cb_lock; /* Lock for ->cb_interest, ->status, ->cb_*break */ 684c435ee34SDavid Howells 685c435ee34SDavid Howells time64_t cb_expires_at; /* time at which callback expires */ 68608e0e7c8SDavid Howells }; 68708e0e7c8SDavid Howells 68812bdcf33SDavid Howells static inline struct fscache_cookie *afs_vnode_cache(struct afs_vnode *vnode) 68912bdcf33SDavid Howells { 69012bdcf33SDavid Howells #ifdef CONFIG_AFS_FSCACHE 69112bdcf33SDavid Howells return vnode->cache; 69212bdcf33SDavid Howells #else 69312bdcf33SDavid Howells return NULL; 69412bdcf33SDavid Howells #endif 69512bdcf33SDavid Howells } 69612bdcf33SDavid Howells 69700d3b7a4SDavid Howells /* 69800d3b7a4SDavid Howells * cached security record for one user's attempt to access a vnode 69900d3b7a4SDavid Howells */ 70000d3b7a4SDavid Howells struct afs_permit { 70100d3b7a4SDavid Howells struct key *key; /* RxRPC ticket holding a security context */ 702be080a6fSDavid Howells afs_access_t access; /* CallerAccess value for this key */ 70300d3b7a4SDavid Howells }; 70400d3b7a4SDavid Howells 70500d3b7a4SDavid Howells /* 706be080a6fSDavid Howells * Immutable cache of CallerAccess records from attempts to access vnodes. 707be080a6fSDavid Howells * These may be shared between multiple vnodes. 70800d3b7a4SDavid Howells */ 70900d3b7a4SDavid Howells struct afs_permits { 710be080a6fSDavid Howells struct rcu_head rcu; 711be080a6fSDavid Howells struct hlist_node hash_node; /* Link in hash */ 712be080a6fSDavid Howells unsigned long h; /* Hash value for this permit list */ 713be080a6fSDavid Howells refcount_t usage; 714be080a6fSDavid Howells unsigned short nr_permits; /* Number of records */ 715be080a6fSDavid Howells bool invalidated; /* Invalidated due to key change */ 716be080a6fSDavid Howells struct afs_permit permits[]; /* List of permits sorted by key pointer */ 71700d3b7a4SDavid Howells }; 71800d3b7a4SDavid Howells 719b908fe6bSDavid Howells /* 720b908fe6bSDavid Howells * record of one of a system's set of network interfaces 721b908fe6bSDavid Howells */ 722b908fe6bSDavid Howells struct afs_interface { 723b908fe6bSDavid Howells struct in_addr address; /* IPv4 address bound to interface */ 724b908fe6bSDavid Howells struct in_addr netmask; /* netmask applied to address */ 725b908fe6bSDavid Howells unsigned mtu; /* MTU of interface */ 726b908fe6bSDavid Howells }; 727b908fe6bSDavid Howells 7288b2a464cSDavid Howells /* 7294584ae96SDavid Howells * Error prioritisation and accumulation. 7304584ae96SDavid Howells */ 7314584ae96SDavid Howells struct afs_error { 7324584ae96SDavid Howells short error; /* Accumulated error */ 7334584ae96SDavid Howells bool responded; /* T if server responded */ 7344584ae96SDavid Howells }; 7354584ae96SDavid Howells 7364584ae96SDavid Howells /* 7378b2a464cSDavid Howells * Cursor for iterating over a server's address list. 7388b2a464cSDavid Howells */ 7398b2a464cSDavid Howells struct afs_addr_cursor { 7408b2a464cSDavid Howells struct afs_addr_list *alist; /* Current address list (pins ref) */ 7413bf0fb6fSDavid Howells unsigned long tried; /* Tried addresses */ 7423bf0fb6fSDavid Howells signed char index; /* Current address */ 7438b2a464cSDavid Howells bool responded; /* T if the current address responded */ 744744bcd71SDavid Howells unsigned short nr_iterations; /* Number of address iterations */ 7453bf0fb6fSDavid Howells short error; 7463bf0fb6fSDavid Howells u32 abort_code; 7478b2a464cSDavid Howells }; 7488b2a464cSDavid Howells 7498b2a464cSDavid Howells /* 7500a5143f2SDavid Howells * Cursor for iterating over a set of volume location servers. 7510a5143f2SDavid Howells */ 7520a5143f2SDavid Howells struct afs_vl_cursor { 7530a5143f2SDavid Howells struct afs_addr_cursor ac; 7540a5143f2SDavid Howells struct afs_cell *cell; /* The cell we're querying */ 7550a5143f2SDavid Howells struct afs_vlserver_list *server_list; /* Current server list (pins ref) */ 7563bf0fb6fSDavid Howells struct afs_vlserver *server; /* Server on which this resides */ 7570a5143f2SDavid Howells struct key *key; /* Key for the server */ 7583bf0fb6fSDavid Howells unsigned long untried; /* Bitmask of untried servers */ 7593bf0fb6fSDavid Howells short index; /* Current server */ 7600a5143f2SDavid Howells short error; 7610a5143f2SDavid Howells unsigned short flags; 7620a5143f2SDavid Howells #define AFS_VL_CURSOR_STOP 0x0001 /* Set to cease iteration */ 7630a5143f2SDavid Howells #define AFS_VL_CURSOR_RETRY 0x0002 /* Set to do a retry */ 7640a5143f2SDavid Howells #define AFS_VL_CURSOR_RETRIED 0x0004 /* Set if started a retry */ 765744bcd71SDavid Howells unsigned short nr_iterations; /* Number of server iterations */ 7660a5143f2SDavid Howells }; 7670a5143f2SDavid Howells 7680a5143f2SDavid Howells /* 7698b2a464cSDavid Howells * Cursor for iterating over a set of fileservers. 7708b2a464cSDavid Howells */ 7718b2a464cSDavid Howells struct afs_fs_cursor { 772a58823acSDavid Howells const struct afs_call_type *type; /* Type of call done */ 7738b2a464cSDavid Howells struct afs_addr_cursor ac; 774d2ddc776SDavid Howells struct afs_vnode *vnode; 775d2ddc776SDavid Howells struct afs_server_list *server_list; /* Current server list (pins ref) */ 776d2ddc776SDavid Howells struct afs_cb_interest *cbi; /* Server on which this resides (pins ref) */ 777d2ddc776SDavid Howells struct key *key; /* Key for the server */ 7783bf0fb6fSDavid Howells unsigned long untried; /* Bitmask of untried servers */ 779d2ddc776SDavid Howells unsigned int cb_break; /* cb_break + cb_s_break before the call */ 780d2ddc776SDavid Howells unsigned int cb_break_2; /* cb_break + cb_s_break (2nd vnode) */ 7813bf0fb6fSDavid Howells short index; /* Current server */ 782e7f680f4SDavid Howells short error; 783d2ddc776SDavid Howells unsigned short flags; 784d2ddc776SDavid Howells #define AFS_FS_CURSOR_STOP 0x0001 /* Set to cease iteration */ 785d2ddc776SDavid Howells #define AFS_FS_CURSOR_VBUSY 0x0002 /* Set if seen VBUSY */ 786d2ddc776SDavid Howells #define AFS_FS_CURSOR_VMOVED 0x0004 /* Set if seen VMOVED */ 787d2ddc776SDavid Howells #define AFS_FS_CURSOR_VNOVOL 0x0008 /* Set if seen VNOVOL */ 788d2ddc776SDavid Howells #define AFS_FS_CURSOR_CUR_ONLY 0x0010 /* Set if current server only (file lock held) */ 789d2ddc776SDavid Howells #define AFS_FS_CURSOR_NO_VSLEEP 0x0020 /* Set to prevent sleep on VBUSY, VOFFLINE, ... */ 79020b8391fSDavid Howells #define AFS_FS_CURSOR_INTR 0x0040 /* Set if op is interruptible */ 791744bcd71SDavid Howells unsigned short nr_iterations; /* Number of server iterations */ 7928b2a464cSDavid Howells }; 7938b2a464cSDavid Howells 794402cb8ddSDavid Howells /* 795402cb8ddSDavid Howells * Cache auxiliary data. 796402cb8ddSDavid Howells */ 797402cb8ddSDavid Howells struct afs_vnode_cache_aux { 798402cb8ddSDavid Howells u64 data_version; 799402cb8ddSDavid Howells } __packed; 800402cb8ddSDavid Howells 80198bf40cdSDavid Howells #include <trace/events/afs.h> 80298bf40cdSDavid Howells 80308e0e7c8SDavid Howells /*****************************************************************************/ 80408e0e7c8SDavid Howells /* 8058b2a464cSDavid Howells * addr_list.c 8068b2a464cSDavid Howells */ 8078b2a464cSDavid Howells static inline struct afs_addr_list *afs_get_addrlist(struct afs_addr_list *alist) 8088b2a464cSDavid Howells { 8098b2a464cSDavid Howells if (alist) 8108b2a464cSDavid Howells refcount_inc(&alist->usage); 8118b2a464cSDavid Howells return alist; 8128b2a464cSDavid Howells } 8138b2a464cSDavid Howells extern struct afs_addr_list *afs_alloc_addrlist(unsigned int, 8148b2a464cSDavid Howells unsigned short, 8158b2a464cSDavid Howells unsigned short); 8168b2a464cSDavid Howells extern void afs_put_addrlist(struct afs_addr_list *); 8170a5143f2SDavid Howells extern struct afs_vlserver_list *afs_parse_text_addrs(struct afs_net *, 8180a5143f2SDavid Howells const char *, size_t, char, 8198b2a464cSDavid Howells unsigned short, unsigned short); 8200a5143f2SDavid Howells extern struct afs_vlserver_list *afs_dns_query(struct afs_cell *, time64_t *); 8218b2a464cSDavid Howells extern bool afs_iterate_addresses(struct afs_addr_cursor *); 8228b2a464cSDavid Howells extern int afs_end_cursor(struct afs_addr_cursor *); 8238b2a464cSDavid Howells 824bf99a53cSDavid Howells extern void afs_merge_fs_addr4(struct afs_addr_list *, __be32, u16); 825bf99a53cSDavid Howells extern void afs_merge_fs_addr6(struct afs_addr_list *, __be32 *, u16); 826d2ddc776SDavid Howells 8278b2a464cSDavid Howells /* 8289b3f26c9SDavid Howells * cache.c 8299b3f26c9SDavid Howells */ 8309b3f26c9SDavid Howells #ifdef CONFIG_AFS_FSCACHE 8319b3f26c9SDavid Howells extern struct fscache_netfs afs_cache_netfs; 8329b3f26c9SDavid Howells extern struct fscache_cookie_def afs_cell_cache_index_def; 8339b3f26c9SDavid Howells extern struct fscache_cookie_def afs_volume_cache_index_def; 8349b3f26c9SDavid Howells extern struct fscache_cookie_def afs_vnode_cache_index_def; 8359b3f26c9SDavid Howells #else 8369b3f26c9SDavid Howells #define afs_cell_cache_index_def (*(struct fscache_cookie_def *) NULL) 8379b3f26c9SDavid Howells #define afs_volume_cache_index_def (*(struct fscache_cookie_def *) NULL) 8389b3f26c9SDavid Howells #define afs_vnode_cache_index_def (*(struct fscache_cookie_def *) NULL) 8399b3f26c9SDavid Howells #endif 8409b3f26c9SDavid Howells 8419b3f26c9SDavid Howells /* 84208e0e7c8SDavid Howells * callback.c 84308e0e7c8SDavid Howells */ 84408e0e7c8SDavid Howells extern void afs_init_callback_state(struct afs_server *); 84530062bd1SDavid Howells extern void __afs_break_callback(struct afs_vnode *); 846c435ee34SDavid Howells extern void afs_break_callback(struct afs_vnode *); 8475cf9dd55SDavid Howells extern void afs_break_callbacks(struct afs_server *, size_t, struct afs_callback_break*); 848c435ee34SDavid Howells 849d4a96becSDavid Howells extern int afs_register_server_cb_interest(struct afs_vnode *, 850d4a96becSDavid Howells struct afs_server_list *, unsigned int); 851c435ee34SDavid Howells extern void afs_put_cb_interest(struct afs_net *, struct afs_cb_interest *); 852d2ddc776SDavid Howells extern void afs_clear_callback_interests(struct afs_net *, struct afs_server_list *); 853c435ee34SDavid Howells 854c435ee34SDavid Howells static inline struct afs_cb_interest *afs_get_cb_interest(struct afs_cb_interest *cbi) 855c435ee34SDavid Howells { 856d4a96becSDavid Howells if (cbi) 857c435ee34SDavid Howells refcount_inc(&cbi->usage); 858c435ee34SDavid Howells return cbi; 859c435ee34SDavid Howells } 8601da177e4SLinus Torvalds 86168251f0aSDavid Howells static inline unsigned int afs_calc_vnode_cb_break(struct afs_vnode *vnode) 86268251f0aSDavid Howells { 863eeba1e9cSDavid Howells return vnode->cb_break + vnode->cb_v_break; 86468251f0aSDavid Howells } 86568251f0aSDavid Howells 86618ac6185SDavid Howells static inline bool afs_cb_is_broken(unsigned int cb_break, 86718ac6185SDavid Howells const struct afs_vnode *vnode, 86818ac6185SDavid Howells const struct afs_cb_interest *cbi) 86968251f0aSDavid Howells { 87018ac6185SDavid Howells return !cbi || cb_break != (vnode->cb_break + 87118ac6185SDavid Howells vnode->volume->cb_v_break); 87268251f0aSDavid Howells } 87368251f0aSDavid Howells 8741da177e4SLinus Torvalds /* 8751da177e4SLinus Torvalds * cell.c 8761da177e4SLinus Torvalds */ 877989782dcSDavid Howells extern int afs_cell_init(struct afs_net *, const char *); 878989782dcSDavid Howells extern struct afs_cell *afs_lookup_cell_rcu(struct afs_net *, const char *, unsigned); 879989782dcSDavid Howells extern struct afs_cell *afs_lookup_cell(struct afs_net *, const char *, unsigned, 880989782dcSDavid Howells const char *, bool); 8818b2a464cSDavid Howells extern struct afs_cell *afs_get_cell(struct afs_cell *); 8829ed900b1SDavid Howells extern void afs_put_cell(struct afs_net *, struct afs_cell *); 883989782dcSDavid Howells extern void afs_manage_cells(struct work_struct *); 884989782dcSDavid Howells extern void afs_cells_timer(struct timer_list *); 885f044c884SDavid Howells extern void __net_exit afs_cell_purge(struct afs_net *); 88608e0e7c8SDavid Howells 88708e0e7c8SDavid Howells /* 88808e0e7c8SDavid Howells * cmservice.c 88908e0e7c8SDavid Howells */ 89008e0e7c8SDavid Howells extern bool afs_cm_incoming_call(struct afs_call *); 89108e0e7c8SDavid Howells 8921da177e4SLinus Torvalds /* 8931da177e4SLinus Torvalds * dir.c 8941da177e4SLinus Torvalds */ 8954b6f5d20SArjan van de Ven extern const struct file_operations afs_dir_file_operations; 8964d673da1SDavid Howells extern const struct inode_operations afs_dir_inode_operations; 897f3ddee8dSDavid Howells extern const struct address_space_operations afs_dir_aops; 8984d673da1SDavid Howells extern const struct dentry_operations afs_fs_dentry_operations; 8994d673da1SDavid Howells 90066c7e1d3SDavid Howells extern void afs_d_release(struct dentry *); 90179ddbfa5SDavid Howells extern int afs_dir_remove_link(struct dentry *, struct key *, unsigned long, unsigned long); 90266c7e1d3SDavid Howells 90366c7e1d3SDavid Howells /* 90463a4681fSDavid Howells * dir_edit.c 90563a4681fSDavid Howells */ 90663a4681fSDavid Howells extern void afs_edit_dir_add(struct afs_vnode *, struct qstr *, struct afs_fid *, 90763a4681fSDavid Howells enum afs_edit_dir_reason); 90863a4681fSDavid Howells extern void afs_edit_dir_remove(struct afs_vnode *, struct qstr *, enum afs_edit_dir_reason); 90963a4681fSDavid Howells 91063a4681fSDavid Howells /* 91179ddbfa5SDavid Howells * dir_silly.c 91279ddbfa5SDavid Howells */ 91379ddbfa5SDavid Howells extern int afs_sillyrename(struct afs_vnode *, struct afs_vnode *, 91479ddbfa5SDavid Howells struct dentry *, struct key *); 91579ddbfa5SDavid Howells extern int afs_silly_iput(struct dentry *, struct inode *); 91679ddbfa5SDavid Howells 91779ddbfa5SDavid Howells /* 91866c7e1d3SDavid Howells * dynroot.c 91966c7e1d3SDavid Howells */ 92066c7e1d3SDavid Howells extern const struct file_operations afs_dynroot_file_operations; 92166c7e1d3SDavid Howells extern const struct inode_operations afs_dynroot_inode_operations; 92266c7e1d3SDavid Howells extern const struct dentry_operations afs_dynroot_dentry_operations; 92366c7e1d3SDavid Howells 92466c7e1d3SDavid Howells extern struct inode *afs_try_auto_mntpt(struct dentry *, struct inode *); 9250da0b7fdSDavid Howells extern int afs_dynroot_mkdir(struct afs_net *, struct afs_cell *); 9260da0b7fdSDavid Howells extern void afs_dynroot_rmdir(struct afs_net *, struct afs_cell *); 9270da0b7fdSDavid Howells extern int afs_dynroot_populate(struct super_block *); 9280da0b7fdSDavid Howells extern void afs_dynroot_depopulate(struct super_block *); 9291da177e4SLinus Torvalds 9301da177e4SLinus Torvalds /* 9311da177e4SLinus Torvalds * file.c 9321da177e4SLinus Torvalds */ 933f5e54d6eSChristoph Hellwig extern const struct address_space_operations afs_fs_aops; 934754661f1SArjan van de Ven extern const struct inode_operations afs_file_inode_operations; 93500d3b7a4SDavid Howells extern const struct file_operations afs_file_operations; 93600d3b7a4SDavid Howells 9374343d008SDavid Howells extern int afs_cache_wb_key(struct afs_vnode *, struct afs_file *); 9384343d008SDavid Howells extern void afs_put_wb_key(struct afs_wb_key *); 93900d3b7a4SDavid Howells extern int afs_open(struct inode *, struct file *); 94000d3b7a4SDavid Howells extern int afs_release(struct inode *, struct file *); 941d2ddc776SDavid Howells extern int afs_fetch_data(struct afs_vnode *, struct key *, struct afs_read *); 942f6d335c0SAl Viro extern int afs_page_filler(void *, struct page *); 943196ee9cdSDavid Howells extern void afs_put_read(struct afs_read *); 9441da177e4SLinus Torvalds 9451da177e4SLinus Torvalds /* 946e8d6c554SDavid Howells * flock.c 947e8d6c554SDavid Howells */ 948f044c884SDavid Howells extern struct workqueue_struct *afs_lock_manager; 949f044c884SDavid Howells 950a690f60aSDavid Howells extern void afs_lock_op_done(struct afs_call *); 951e8d6c554SDavid Howells extern void afs_lock_work(struct work_struct *); 952e8d6c554SDavid Howells extern void afs_lock_may_be_available(struct afs_vnode *); 953e8d6c554SDavid Howells extern int afs_lock(struct file *, int, struct file_lock *); 954e8d6c554SDavid Howells extern int afs_flock(struct file *, int, struct file_lock *); 955e8d6c554SDavid Howells 956e8d6c554SDavid Howells /* 95708e0e7c8SDavid Howells * fsclient.c 95808e0e7c8SDavid Howells */ 959a58823acSDavid Howells extern int afs_fs_fetch_file_status(struct afs_fs_cursor *, struct afs_status_cb *, 960a58823acSDavid Howells struct afs_volsync *); 961d2ddc776SDavid Howells extern int afs_fs_give_up_callbacks(struct afs_net *, struct afs_server *); 962a58823acSDavid Howells extern int afs_fs_fetch_data(struct afs_fs_cursor *, struct afs_status_cb *, struct afs_read *); 963a58823acSDavid Howells extern int afs_fs_create(struct afs_fs_cursor *, const char *, umode_t, 964a58823acSDavid Howells struct afs_status_cb *, struct afs_fid *, struct afs_status_cb *); 965a58823acSDavid Howells extern int afs_fs_remove(struct afs_fs_cursor *, struct afs_vnode *, const char *, bool, 966a58823acSDavid Howells struct afs_status_cb *); 967a58823acSDavid Howells extern int afs_fs_link(struct afs_fs_cursor *, struct afs_vnode *, const char *, 968a58823acSDavid Howells struct afs_status_cb *, struct afs_status_cb *); 969a58823acSDavid Howells extern int afs_fs_symlink(struct afs_fs_cursor *, const char *, const char *, 970a58823acSDavid Howells struct afs_status_cb *, struct afs_fid *, struct afs_status_cb *); 971d2ddc776SDavid Howells extern int afs_fs_rename(struct afs_fs_cursor *, const char *, 972a58823acSDavid Howells struct afs_vnode *, const char *, 973a58823acSDavid Howells struct afs_status_cb *, struct afs_status_cb *); 9744343d008SDavid Howells extern int afs_fs_store_data(struct afs_fs_cursor *, struct address_space *, 975a58823acSDavid Howells pgoff_t, pgoff_t, unsigned, unsigned, struct afs_status_cb *); 976a58823acSDavid Howells extern int afs_fs_setattr(struct afs_fs_cursor *, struct iattr *, struct afs_status_cb *); 977d2ddc776SDavid Howells extern int afs_fs_get_volume_status(struct afs_fs_cursor *, struct afs_volume_status *); 978a58823acSDavid Howells extern int afs_fs_set_lock(struct afs_fs_cursor *, afs_lock_type_t, struct afs_status_cb *); 979a58823acSDavid Howells extern int afs_fs_extend_lock(struct afs_fs_cursor *, struct afs_status_cb *); 980a58823acSDavid Howells extern int afs_fs_release_lock(struct afs_fs_cursor *, struct afs_status_cb *); 981d2ddc776SDavid Howells extern int afs_fs_give_up_all_callbacks(struct afs_net *, struct afs_server *, 982d2ddc776SDavid Howells struct afs_addr_cursor *, struct key *); 9830b9bf381SDavid Howells extern struct afs_call *afs_fs_get_capabilities(struct afs_net *, struct afs_server *, 9840b9bf381SDavid Howells struct afs_addr_cursor *, struct key *, 9850b9bf381SDavid Howells unsigned int); 9865cf9dd55SDavid Howells extern int afs_fs_inline_bulk_status(struct afs_fs_cursor *, struct afs_net *, 98787182759SDavid Howells struct afs_fid *, struct afs_status_cb *, 98887182759SDavid Howells unsigned int, struct afs_volsync *); 9895cf9dd55SDavid Howells extern int afs_fs_fetch_status(struct afs_fs_cursor *, struct afs_net *, 990a58823acSDavid Howells struct afs_fid *, struct afs_status_cb *, 991a58823acSDavid Howells struct afs_volsync *); 99208e0e7c8SDavid Howells 993260f082bSDavid Howells struct afs_acl { 994260f082bSDavid Howells u32 size; 995260f082bSDavid Howells u8 data[]; 996260f082bSDavid Howells }; 997260f082bSDavid Howells 998a58823acSDavid Howells extern struct afs_acl *afs_fs_fetch_acl(struct afs_fs_cursor *, struct afs_status_cb *); 999a58823acSDavid Howells extern int afs_fs_store_acl(struct afs_fs_cursor *, const struct afs_acl *, 1000a58823acSDavid Howells struct afs_status_cb *); 1001260f082bSDavid Howells 100208e0e7c8SDavid Howells /* 10033bf0fb6fSDavid Howells * fs_probe.c 10043bf0fb6fSDavid Howells */ 10053bf0fb6fSDavid Howells extern void afs_fileserver_probe_result(struct afs_call *); 10063bf0fb6fSDavid Howells extern int afs_probe_fileservers(struct afs_net *, struct key *, struct afs_server_list *); 10073bf0fb6fSDavid Howells extern int afs_wait_for_fs_probes(struct afs_server_list *, unsigned long); 10083bf0fb6fSDavid Howells 10093bf0fb6fSDavid Howells /* 10101da177e4SLinus Torvalds * inode.c 10111da177e4SLinus Torvalds */ 1012a58823acSDavid Howells extern void afs_vnode_commit_status(struct afs_fs_cursor *, 1013a58823acSDavid Howells struct afs_vnode *, 1014a58823acSDavid Howells unsigned int, 1015a58823acSDavid Howells const afs_dataversion_t *, 1016a58823acSDavid Howells struct afs_status_cb *); 1017a58823acSDavid Howells extern int afs_fetch_status(struct afs_vnode *, struct key *, bool, afs_access_t *); 1018c435ee34SDavid Howells extern int afs_iget5_test(struct inode *, void *); 10194d673da1SDavid Howells extern struct inode *afs_iget_pseudo_dir(struct super_block *, bool); 102000d3b7a4SDavid Howells extern struct inode *afs_iget(struct super_block *, struct key *, 1021a58823acSDavid Howells struct afs_fid *, struct afs_status_cb *, 1022b134d687SDavid Howells struct afs_cb_interest *, 1023b134d687SDavid Howells struct afs_vnode *); 1024416351f2SDavid Howells extern void afs_zap_data(struct afs_vnode *); 1025*c925bd0aSDavid Howells extern bool afs_check_validity(struct afs_vnode *); 1026260a9803SDavid Howells extern int afs_validate(struct afs_vnode *, struct key *); 1027a528d35eSDavid Howells extern int afs_getattr(const struct path *, struct kstat *, u32, unsigned int); 102831143d5dSDavid Howells extern int afs_setattr(struct dentry *, struct iattr *); 1029b57922d9SAl Viro extern void afs_evict_inode(struct inode *); 1030bec5eb61Swanglei extern int afs_drop_inode(struct inode *); 10311da177e4SLinus Torvalds 10321da177e4SLinus Torvalds /* 10331da177e4SLinus Torvalds * main.c 10341da177e4SLinus Torvalds */ 10350ad53eeeSTejun Heo extern struct workqueue_struct *afs_wq; 10365b86d4ffSDavid Howells extern int afs_net_id; 10375b86d4ffSDavid Howells 10385b86d4ffSDavid Howells static inline struct afs_net *afs_net(struct net *net) 10395b86d4ffSDavid Howells { 10405b86d4ffSDavid Howells return net_generic(net, afs_net_id); 10415b86d4ffSDavid Howells } 10425b86d4ffSDavid Howells 10435b86d4ffSDavid Howells static inline struct afs_net *afs_sb2net(struct super_block *sb) 10445b86d4ffSDavid Howells { 10455b86d4ffSDavid Howells return afs_net(AFS_FS_S(sb)->net_ns); 10465b86d4ffSDavid Howells } 1047f044c884SDavid Howells 1048f044c884SDavid Howells static inline struct afs_net *afs_d2net(struct dentry *dentry) 1049f044c884SDavid Howells { 10505b86d4ffSDavid Howells return afs_sb2net(dentry->d_sb); 1051f044c884SDavid Howells } 1052f044c884SDavid Howells 1053f044c884SDavid Howells static inline struct afs_net *afs_i2net(struct inode *inode) 1054f044c884SDavid Howells { 10555b86d4ffSDavid Howells return afs_sb2net(inode->i_sb); 1056f044c884SDavid Howells } 1057f044c884SDavid Howells 1058f044c884SDavid Howells static inline struct afs_net *afs_v2net(struct afs_vnode *vnode) 1059f044c884SDavid Howells { 10605b86d4ffSDavid Howells return afs_i2net(&vnode->vfs_inode); 1061f044c884SDavid Howells } 1062f044c884SDavid Howells 1063f044c884SDavid Howells static inline struct afs_net *afs_sock2net(struct sock *sk) 1064f044c884SDavid Howells { 10655b86d4ffSDavid Howells return net_generic(sock_net(sk), afs_net_id); 1066f044c884SDavid Howells } 10671da177e4SLinus Torvalds 1068d55b4da4SDavid Howells static inline void __afs_stat(atomic_t *s) 1069d55b4da4SDavid Howells { 1070d55b4da4SDavid Howells atomic_inc(s); 1071d55b4da4SDavid Howells } 1072d55b4da4SDavid Howells 1073d55b4da4SDavid Howells #define afs_stat_v(vnode, n) __afs_stat(&afs_v2net(vnode)->n) 1074d55b4da4SDavid Howells 10751da177e4SLinus Torvalds /* 107608e0e7c8SDavid Howells * misc.c 107708e0e7c8SDavid Howells */ 107808e0e7c8SDavid Howells extern int afs_abort_to_error(u32); 10794584ae96SDavid Howells extern void afs_prioritise_error(struct afs_error *, int, u32); 108008e0e7c8SDavid Howells 108108e0e7c8SDavid Howells /* 10821da177e4SLinus Torvalds * mntpt.c 10831da177e4SLinus Torvalds */ 1084754661f1SArjan van de Ven extern const struct inode_operations afs_mntpt_inode_operations; 1085bec5eb61Swanglei extern const struct inode_operations afs_autocell_inode_operations; 10864b6f5d20SArjan van de Ven extern const struct file_operations afs_mntpt_file_operations; 10871da177e4SLinus Torvalds 1088d18610b0SDavid Howells extern struct vfsmount *afs_d_automount(struct path *); 108908e0e7c8SDavid Howells extern void afs_mntpt_kill_timer(void); 10901da177e4SLinus Torvalds 10911da177e4SLinus Torvalds /* 1092b4db2b35SArnd Bergmann * netdevices.c 1093b4db2b35SArnd Bergmann */ 10945b86d4ffSDavid Howells extern int afs_get_ipv4_interfaces(struct afs_net *, struct afs_interface *, 10955b86d4ffSDavid Howells size_t, bool); 1096b4db2b35SArnd Bergmann 1097b4db2b35SArnd Bergmann /* 10981da177e4SLinus Torvalds * proc.c 10991da177e4SLinus Torvalds */ 1100b6cfbecaSDavid Howells #ifdef CONFIG_PROC_FS 1101f044c884SDavid Howells extern int __net_init afs_proc_init(struct afs_net *); 1102f044c884SDavid Howells extern void __net_exit afs_proc_cleanup(struct afs_net *); 11035b86d4ffSDavid Howells extern int afs_proc_cell_setup(struct afs_cell *); 11045b86d4ffSDavid Howells extern void afs_proc_cell_remove(struct afs_cell *); 11056f8880d8SDavid Howells extern void afs_put_sysnames(struct afs_sysnames *); 1106b6cfbecaSDavid Howells #else 1107b6cfbecaSDavid Howells static inline int afs_proc_init(struct afs_net *net) { return 0; } 1108b6cfbecaSDavid Howells static inline void afs_proc_cleanup(struct afs_net *net) {} 1109b6cfbecaSDavid Howells static inline int afs_proc_cell_setup(struct afs_cell *cell) { return 0; } 1110b6cfbecaSDavid Howells static inline void afs_proc_cell_remove(struct afs_cell *cell) {} 1111b6cfbecaSDavid Howells static inline void afs_put_sysnames(struct afs_sysnames *sysnames) {} 1112b6cfbecaSDavid Howells #endif 11131da177e4SLinus Torvalds 111408e0e7c8SDavid Howells /* 1115d2ddc776SDavid Howells * rotate.c 1116d2ddc776SDavid Howells */ 1117d2ddc776SDavid Howells extern bool afs_begin_vnode_operation(struct afs_fs_cursor *, struct afs_vnode *, 111820b8391fSDavid Howells struct key *, bool); 1119d2ddc776SDavid Howells extern bool afs_select_fileserver(struct afs_fs_cursor *); 1120d2ddc776SDavid Howells extern bool afs_select_current_fileserver(struct afs_fs_cursor *); 1121d2ddc776SDavid Howells extern int afs_end_vnode_operation(struct afs_fs_cursor *); 1122d2ddc776SDavid Howells 1123d2ddc776SDavid Howells /* 112408e0e7c8SDavid Howells * rxrpc.c 112508e0e7c8SDavid Howells */ 1126f044c884SDavid Howells extern struct workqueue_struct *afs_async_calls; 11278324f0bcSDavid Howells 1128f044c884SDavid Howells extern int __net_init afs_open_socket(struct afs_net *); 1129f044c884SDavid Howells extern void __net_exit afs_close_socket(struct afs_net *); 1130f044c884SDavid Howells extern void afs_charge_preallocation(struct work_struct *); 1131341f741fSDavid Howells extern void afs_put_call(struct afs_call *); 11320b9bf381SDavid Howells extern void afs_make_call(struct afs_addr_cursor *, struct afs_call *, gfp_t); 11330b9bf381SDavid Howells extern long afs_wait_for_call_to_complete(struct afs_call *, struct afs_addr_cursor *); 1134f044c884SDavid Howells extern struct afs_call *afs_alloc_flat_call(struct afs_net *, 1135f044c884SDavid Howells const struct afs_call_type *, 113608e0e7c8SDavid Howells size_t, size_t); 113708e0e7c8SDavid Howells extern void afs_flat_call_destructor(struct afs_call *); 113808e0e7c8SDavid Howells extern void afs_send_empty_reply(struct afs_call *); 1139b908fe6bSDavid Howells extern void afs_send_simple_reply(struct afs_call *, const void *, size_t); 114012bdcf33SDavid Howells extern int afs_extract_data(struct afs_call *, bool); 1141160cb957SDavid Howells extern int afs_protocol_error(struct afs_call *, int, enum afs_eproto_cause); 114208e0e7c8SDavid Howells 114320b8391fSDavid Howells static inline void afs_set_fc_call(struct afs_call *call, struct afs_fs_cursor *fc) 114420b8391fSDavid Howells { 114520b8391fSDavid Howells call->intr = fc->flags & AFS_FS_CURSOR_INTR; 1146a58823acSDavid Howells fc->type = call->type; 114720b8391fSDavid Howells } 114820b8391fSDavid Howells 114912bdcf33SDavid Howells static inline void afs_extract_begin(struct afs_call *call, void *buf, size_t size) 115012bdcf33SDavid Howells { 115112bdcf33SDavid Howells call->kvec[0].iov_base = buf; 115212bdcf33SDavid Howells call->kvec[0].iov_len = size; 115312bdcf33SDavid Howells iov_iter_kvec(&call->iter, READ, call->kvec, 1, size); 115412bdcf33SDavid Howells } 115512bdcf33SDavid Howells 115612bdcf33SDavid Howells static inline void afs_extract_to_tmp(struct afs_call *call) 115712bdcf33SDavid Howells { 115812bdcf33SDavid Howells afs_extract_begin(call, &call->tmp, sizeof(call->tmp)); 115912bdcf33SDavid Howells } 116012bdcf33SDavid Howells 116112bdcf33SDavid Howells static inline void afs_extract_to_tmp64(struct afs_call *call) 116212bdcf33SDavid Howells { 116312bdcf33SDavid Howells afs_extract_begin(call, &call->tmp64, sizeof(call->tmp64)); 116412bdcf33SDavid Howells } 116512bdcf33SDavid Howells 116612bdcf33SDavid Howells static inline void afs_extract_discard(struct afs_call *call, size_t size) 116712bdcf33SDavid Howells { 116812bdcf33SDavid Howells iov_iter_discard(&call->iter, READ, size); 116912bdcf33SDavid Howells } 117012bdcf33SDavid Howells 117112bdcf33SDavid Howells static inline void afs_extract_to_buf(struct afs_call *call, size_t size) 117212bdcf33SDavid Howells { 117312bdcf33SDavid Howells afs_extract_begin(call, call->buffer, size); 117412bdcf33SDavid Howells } 117512bdcf33SDavid Howells 1176d001648eSDavid Howells static inline int afs_transfer_reply(struct afs_call *call) 1177372ee163SDavid Howells { 117812bdcf33SDavid Howells return afs_extract_data(call, false); 1179372ee163SDavid Howells } 1180372ee163SDavid Howells 118198bf40cdSDavid Howells static inline bool afs_check_call_state(struct afs_call *call, 118298bf40cdSDavid Howells enum afs_call_state state) 118398bf40cdSDavid Howells { 118498bf40cdSDavid Howells return READ_ONCE(call->state) == state; 118598bf40cdSDavid Howells } 118698bf40cdSDavid Howells 118798bf40cdSDavid Howells static inline bool afs_set_call_state(struct afs_call *call, 118898bf40cdSDavid Howells enum afs_call_state from, 118998bf40cdSDavid Howells enum afs_call_state to) 119098bf40cdSDavid Howells { 119198bf40cdSDavid Howells bool ok = false; 119298bf40cdSDavid Howells 119398bf40cdSDavid Howells spin_lock_bh(&call->state_lock); 119498bf40cdSDavid Howells if (call->state == from) { 119598bf40cdSDavid Howells call->state = to; 119698bf40cdSDavid Howells trace_afs_call_state(call, from, to, 0, 0); 119798bf40cdSDavid Howells ok = true; 119898bf40cdSDavid Howells } 119998bf40cdSDavid Howells spin_unlock_bh(&call->state_lock); 120098bf40cdSDavid Howells return ok; 120198bf40cdSDavid Howells } 120298bf40cdSDavid Howells 120398bf40cdSDavid Howells static inline void afs_set_call_complete(struct afs_call *call, 120498bf40cdSDavid Howells int error, u32 remote_abort) 120598bf40cdSDavid Howells { 120698bf40cdSDavid Howells enum afs_call_state state; 120798bf40cdSDavid Howells bool ok = false; 120898bf40cdSDavid Howells 120998bf40cdSDavid Howells spin_lock_bh(&call->state_lock); 121098bf40cdSDavid Howells state = call->state; 121198bf40cdSDavid Howells if (state != AFS_CALL_COMPLETE) { 121298bf40cdSDavid Howells call->abort_code = remote_abort; 121398bf40cdSDavid Howells call->error = error; 121498bf40cdSDavid Howells call->state = AFS_CALL_COMPLETE; 121598bf40cdSDavid Howells trace_afs_call_state(call, state, AFS_CALL_COMPLETE, 121698bf40cdSDavid Howells error, remote_abort); 121798bf40cdSDavid Howells ok = true; 121898bf40cdSDavid Howells } 121998bf40cdSDavid Howells spin_unlock_bh(&call->state_lock); 122098bf40cdSDavid Howells if (ok) 122198bf40cdSDavid Howells trace_afs_call_done(call); 122298bf40cdSDavid Howells } 122398bf40cdSDavid Howells 122408e0e7c8SDavid Howells /* 122500d3b7a4SDavid Howells * security.c 122600d3b7a4SDavid Howells */ 1227be080a6fSDavid Howells extern void afs_put_permits(struct afs_permits *); 122800d3b7a4SDavid Howells extern void afs_clear_permits(struct afs_vnode *); 1229a58823acSDavid Howells extern void afs_cache_permit(struct afs_vnode *, struct key *, unsigned int, 1230a58823acSDavid Howells struct afs_status_cb *); 1231416351f2SDavid Howells extern void afs_zap_permits(struct rcu_head *); 123200d3b7a4SDavid Howells extern struct key *afs_request_key(struct afs_cell *); 12330fafdc9fSDavid Howells extern int afs_check_permit(struct afs_vnode *, struct key *, afs_access_t *); 123410556cb2SAl Viro extern int afs_permission(struct inode *, int); 1235be080a6fSDavid Howells extern void __exit afs_clean_up_permit_cache(void); 123600d3b7a4SDavid Howells 123700d3b7a4SDavid Howells /* 123808e0e7c8SDavid Howells * server.c 123908e0e7c8SDavid Howells */ 124008e0e7c8SDavid Howells extern spinlock_t afs_server_peer_lock; 124108e0e7c8SDavid Howells 1242c435ee34SDavid Howells static inline struct afs_server *afs_get_server(struct afs_server *server) 1243c435ee34SDavid Howells { 1244c435ee34SDavid Howells atomic_inc(&server->usage); 1245c435ee34SDavid Howells return server; 1246c435ee34SDavid Howells } 124708e0e7c8SDavid Howells 1248f044c884SDavid Howells extern struct afs_server *afs_find_server(struct afs_net *, 1249f044c884SDavid Howells const struct sockaddr_rxrpc *); 1250d2ddc776SDavid Howells extern struct afs_server *afs_find_server_by_uuid(struct afs_net *, const uuid_t *); 1251d2ddc776SDavid Howells extern struct afs_server *afs_lookup_server(struct afs_cell *, struct key *, const uuid_t *); 12529ed900b1SDavid Howells extern void afs_put_server(struct afs_net *, struct afs_server *); 1253d2ddc776SDavid Howells extern void afs_manage_servers(struct work_struct *); 1254d2ddc776SDavid Howells extern void afs_servers_timer(struct timer_list *); 1255f044c884SDavid Howells extern void __net_exit afs_purge_servers(struct afs_net *); 1256d2ddc776SDavid Howells extern bool afs_check_server_record(struct afs_fs_cursor *, struct afs_server *); 1257d2ddc776SDavid Howells 1258d2ddc776SDavid Howells /* 1259d2ddc776SDavid Howells * server_list.c 1260d2ddc776SDavid Howells */ 1261d2ddc776SDavid Howells static inline struct afs_server_list *afs_get_serverlist(struct afs_server_list *slist) 1262d2ddc776SDavid Howells { 1263d2ddc776SDavid Howells refcount_inc(&slist->usage); 1264d2ddc776SDavid Howells return slist; 1265d2ddc776SDavid Howells } 1266d2ddc776SDavid Howells 1267d2ddc776SDavid Howells extern void afs_put_serverlist(struct afs_net *, struct afs_server_list *); 1268d2ddc776SDavid Howells extern struct afs_server_list *afs_alloc_server_list(struct afs_cell *, struct key *, 1269d2ddc776SDavid Howells struct afs_vldb_entry *, 1270d2ddc776SDavid Howells u8); 1271d2ddc776SDavid Howells extern bool afs_annotate_server_list(struct afs_server_list *, struct afs_server_list *); 127208e0e7c8SDavid Howells 127308e0e7c8SDavid Howells /* 127400d3b7a4SDavid Howells * super.c 127500d3b7a4SDavid Howells */ 1276f044c884SDavid Howells extern int __init afs_fs_init(void); 12775b86d4ffSDavid Howells extern void afs_fs_exit(void); 127800d3b7a4SDavid Howells 127900d3b7a4SDavid Howells /* 128008e0e7c8SDavid Howells * vlclient.c 128108e0e7c8SDavid Howells */ 12820a5143f2SDavid Howells extern struct afs_vldb_entry *afs_vl_get_entry_by_name_u(struct afs_vl_cursor *, 12830a5143f2SDavid Howells const char *, int); 12840a5143f2SDavid Howells extern struct afs_addr_list *afs_vl_get_addrs_u(struct afs_vl_cursor *, const uuid_t *); 12850b9bf381SDavid Howells extern struct afs_call *afs_vl_get_capabilities(struct afs_net *, struct afs_addr_cursor *, 12860b9bf381SDavid Howells struct key *, struct afs_vlserver *, unsigned int); 12870a5143f2SDavid Howells extern struct afs_addr_list *afs_yfsvl_get_endpoints(struct afs_vl_cursor *, const uuid_t *); 12880a5143f2SDavid Howells 12890a5143f2SDavid Howells /* 12903bf0fb6fSDavid Howells * vl_probe.c 12913bf0fb6fSDavid Howells */ 12923bf0fb6fSDavid Howells extern void afs_vlserver_probe_result(struct afs_call *); 12933bf0fb6fSDavid Howells extern int afs_send_vl_probes(struct afs_net *, struct key *, struct afs_vlserver_list *); 12943bf0fb6fSDavid Howells extern int afs_wait_for_vl_probes(struct afs_vlserver_list *, unsigned long); 12953bf0fb6fSDavid Howells 12963bf0fb6fSDavid Howells /* 12970a5143f2SDavid Howells * vl_rotate.c 12980a5143f2SDavid Howells */ 12990a5143f2SDavid Howells extern bool afs_begin_vlserver_operation(struct afs_vl_cursor *, 13000a5143f2SDavid Howells struct afs_cell *, struct key *); 13010a5143f2SDavid Howells extern bool afs_select_vlserver(struct afs_vl_cursor *); 13020a5143f2SDavid Howells extern bool afs_select_current_vlserver(struct afs_vl_cursor *); 13030a5143f2SDavid Howells extern int afs_end_vlserver_operation(struct afs_vl_cursor *); 13040a5143f2SDavid Howells 13050a5143f2SDavid Howells /* 13060a5143f2SDavid Howells * vlserver_list.c 13070a5143f2SDavid Howells */ 13080a5143f2SDavid Howells static inline struct afs_vlserver *afs_get_vlserver(struct afs_vlserver *vlserver) 13090a5143f2SDavid Howells { 13100a5143f2SDavid Howells atomic_inc(&vlserver->usage); 13110a5143f2SDavid Howells return vlserver; 13120a5143f2SDavid Howells } 13130a5143f2SDavid Howells 13140a5143f2SDavid Howells static inline struct afs_vlserver_list *afs_get_vlserverlist(struct afs_vlserver_list *vllist) 13150a5143f2SDavid Howells { 13160a5143f2SDavid Howells if (vllist) 13170a5143f2SDavid Howells atomic_inc(&vllist->usage); 13180a5143f2SDavid Howells return vllist; 13190a5143f2SDavid Howells } 13200a5143f2SDavid Howells 13210a5143f2SDavid Howells extern struct afs_vlserver *afs_alloc_vlserver(const char *, size_t, unsigned short); 13220a5143f2SDavid Howells extern void afs_put_vlserver(struct afs_net *, struct afs_vlserver *); 13230a5143f2SDavid Howells extern struct afs_vlserver_list *afs_alloc_vlserver_list(unsigned int); 13240a5143f2SDavid Howells extern void afs_put_vlserverlist(struct afs_net *, struct afs_vlserver_list *); 13250a5143f2SDavid Howells extern struct afs_vlserver_list *afs_extract_vlserver_list(struct afs_cell *, 13260a5143f2SDavid Howells const void *, size_t); 132708e0e7c8SDavid Howells 132808e0e7c8SDavid Howells /* 132908e0e7c8SDavid Howells * volume.c 133008e0e7c8SDavid Howells */ 1331d2ddc776SDavid Howells static inline struct afs_volume *__afs_get_volume(struct afs_volume *volume) 133249566f6fSDavid Howells { 133349566f6fSDavid Howells if (volume) 133449566f6fSDavid Howells atomic_inc(&volume->usage); 133549566f6fSDavid Howells return volume; 133649566f6fSDavid Howells } 133708e0e7c8SDavid Howells 133813fcc683SDavid Howells extern struct afs_volume *afs_create_volume(struct afs_fs_context *); 1339d2ddc776SDavid Howells extern void afs_activate_volume(struct afs_volume *); 1340d2ddc776SDavid Howells extern void afs_deactivate_volume(struct afs_volume *); 13419ed900b1SDavid Howells extern void afs_put_volume(struct afs_cell *, struct afs_volume *); 1342d2ddc776SDavid Howells extern int afs_check_volume_status(struct afs_volume *, struct key *); 134308e0e7c8SDavid Howells 134431143d5dSDavid Howells /* 134531143d5dSDavid Howells * write.c 134631143d5dSDavid Howells */ 134731143d5dSDavid Howells extern int afs_set_page_dirty(struct page *); 134815b4650eSNick Piggin extern int afs_write_begin(struct file *file, struct address_space *mapping, 134915b4650eSNick Piggin loff_t pos, unsigned len, unsigned flags, 135015b4650eSNick Piggin struct page **pagep, void **fsdata); 135115b4650eSNick Piggin extern int afs_write_end(struct file *file, struct address_space *mapping, 135215b4650eSNick Piggin loff_t pos, unsigned len, unsigned copied, 135315b4650eSNick Piggin struct page *page, void *fsdata); 135431143d5dSDavid Howells extern int afs_writepage(struct page *, struct writeback_control *); 135531143d5dSDavid Howells extern int afs_writepages(struct address_space *, struct writeback_control *); 135650b5551dSAl Viro extern ssize_t afs_file_write(struct kiocb *, struct iov_iter *); 135702c24a82SJosef Bacik extern int afs_fsync(struct file *, loff_t, loff_t, int); 13580722f186SSouptick Joarder extern vm_fault_t afs_page_mkwrite(struct vm_fault *vmf); 13594343d008SDavid Howells extern void afs_prune_wb_keys(struct afs_vnode *); 13604343d008SDavid Howells extern int afs_launder_page(struct page *); 136131143d5dSDavid Howells 1362d3e3b7eaSDavid Howells /* 1363d3e3b7eaSDavid Howells * xattr.c 1364d3e3b7eaSDavid Howells */ 1365d3e3b7eaSDavid Howells extern const struct xattr_handler *afs_xattr_handlers[]; 1366d3e3b7eaSDavid Howells extern ssize_t afs_listxattr(struct dentry *, char *, size_t); 136731143d5dSDavid Howells 136830062bd1SDavid Howells /* 136930062bd1SDavid Howells * yfsclient.c 137030062bd1SDavid Howells */ 1371a58823acSDavid Howells extern int yfs_fs_fetch_file_status(struct afs_fs_cursor *, struct afs_status_cb *, 1372a58823acSDavid Howells struct afs_volsync *); 1373a58823acSDavid Howells extern int yfs_fs_fetch_data(struct afs_fs_cursor *, struct afs_status_cb *, struct afs_read *); 1374a58823acSDavid Howells extern int yfs_fs_create_file(struct afs_fs_cursor *, const char *, umode_t, struct afs_status_cb *, 1375a58823acSDavid Howells struct afs_fid *, struct afs_status_cb *); 1376a58823acSDavid Howells extern int yfs_fs_make_dir(struct afs_fs_cursor *, const char *, umode_t, struct afs_status_cb *, 1377a58823acSDavid Howells struct afs_fid *, struct afs_status_cb *); 1378a58823acSDavid Howells extern int yfs_fs_remove_file2(struct afs_fs_cursor *, struct afs_vnode *, const char *, 1379a58823acSDavid Howells struct afs_status_cb *, struct afs_status_cb *); 1380a58823acSDavid Howells extern int yfs_fs_remove(struct afs_fs_cursor *, struct afs_vnode *, const char *, bool, 1381a58823acSDavid Howells struct afs_status_cb *); 1382a58823acSDavid Howells extern int yfs_fs_link(struct afs_fs_cursor *, struct afs_vnode *, const char *, 1383a58823acSDavid Howells struct afs_status_cb *, struct afs_status_cb *); 1384a58823acSDavid Howells extern int yfs_fs_symlink(struct afs_fs_cursor *, const char *, const char *, 1385a58823acSDavid Howells struct afs_status_cb *, struct afs_fid *, struct afs_status_cb *); 1386a58823acSDavid Howells extern int yfs_fs_rename(struct afs_fs_cursor *, const char *, struct afs_vnode *, const char *, 1387a58823acSDavid Howells struct afs_status_cb *, struct afs_status_cb *); 138830062bd1SDavid Howells extern int yfs_fs_store_data(struct afs_fs_cursor *, struct address_space *, 1389a58823acSDavid Howells pgoff_t, pgoff_t, unsigned, unsigned, struct afs_status_cb *); 1390a58823acSDavid Howells extern int yfs_fs_setattr(struct afs_fs_cursor *, struct iattr *, struct afs_status_cb *); 139130062bd1SDavid Howells extern int yfs_fs_get_volume_status(struct afs_fs_cursor *, struct afs_volume_status *); 1392a58823acSDavid Howells extern int yfs_fs_set_lock(struct afs_fs_cursor *, afs_lock_type_t, struct afs_status_cb *); 1393a58823acSDavid Howells extern int yfs_fs_extend_lock(struct afs_fs_cursor *, struct afs_status_cb *); 1394a58823acSDavid Howells extern int yfs_fs_release_lock(struct afs_fs_cursor *, struct afs_status_cb *); 139530062bd1SDavid Howells extern int yfs_fs_fetch_status(struct afs_fs_cursor *, struct afs_net *, 1396a58823acSDavid Howells struct afs_fid *, struct afs_status_cb *, 1397a58823acSDavid Howells struct afs_volsync *); 139830062bd1SDavid Howells extern int yfs_fs_inline_bulk_status(struct afs_fs_cursor *, struct afs_net *, 139987182759SDavid Howells struct afs_fid *, struct afs_status_cb *, 140087182759SDavid Howells unsigned int, struct afs_volsync *); 1401d2ddc776SDavid Howells 1402ae46578bSDavid Howells struct yfs_acl { 1403ae46578bSDavid Howells struct afs_acl *acl; /* Dir/file/symlink ACL */ 1404ae46578bSDavid Howells struct afs_acl *vol_acl; /* Whole volume ACL */ 1405ae46578bSDavid Howells u32 inherit_flag; /* True if ACL is inherited from parent dir */ 1406ae46578bSDavid Howells u32 num_cleaned; /* Number of ACEs removed due to subject removal */ 1407ae46578bSDavid Howells unsigned int flags; 1408ae46578bSDavid Howells #define YFS_ACL_WANT_ACL 0x01 /* Set if caller wants ->acl */ 1409ae46578bSDavid Howells #define YFS_ACL_WANT_VOL_ACL 0x02 /* Set if caller wants ->vol_acl */ 1410ae46578bSDavid Howells }; 1411ae46578bSDavid Howells 1412ae46578bSDavid Howells extern void yfs_free_opaque_acl(struct yfs_acl *); 1413a58823acSDavid Howells extern struct yfs_acl *yfs_fs_fetch_opaque_acl(struct afs_fs_cursor *, struct yfs_acl *, 1414a58823acSDavid Howells struct afs_status_cb *); 1415a58823acSDavid Howells extern int yfs_fs_store_opaque_acl2(struct afs_fs_cursor *, const struct afs_acl *, 1416a58823acSDavid Howells struct afs_status_cb *); 1417ae46578bSDavid Howells 1418d2ddc776SDavid Howells /* 1419d2ddc776SDavid Howells * Miscellaneous inline functions. 1420d2ddc776SDavid Howells */ 1421d2ddc776SDavid Howells static inline struct afs_vnode *AFS_FS_I(struct inode *inode) 1422d2ddc776SDavid Howells { 1423d2ddc776SDavid Howells return container_of(inode, struct afs_vnode, vfs_inode); 1424d2ddc776SDavid Howells } 1425d2ddc776SDavid Howells 1426d2ddc776SDavid Howells static inline struct inode *AFS_VNODE_TO_I(struct afs_vnode *vnode) 1427d2ddc776SDavid Howells { 1428d2ddc776SDavid Howells return &vnode->vfs_inode; 1429d2ddc776SDavid Howells } 1430d2ddc776SDavid Howells 1431d2ddc776SDavid Howells static inline void afs_check_for_remote_deletion(struct afs_fs_cursor *fc, 1432d2ddc776SDavid Howells struct afs_vnode *vnode) 1433d2ddc776SDavid Howells { 1434d2ddc776SDavid Howells if (fc->ac.error == -ENOENT) { 1435d2ddc776SDavid Howells set_bit(AFS_VNODE_DELETED, &vnode->flags); 1436d2ddc776SDavid Howells afs_break_callback(vnode); 1437d2ddc776SDavid Howells } 1438d2ddc776SDavid Howells } 1439d2ddc776SDavid Howells 1440f51375cdSDavid Howells static inline int afs_io_error(struct afs_call *call, enum afs_io_error where) 1441f51375cdSDavid Howells { 1442f51375cdSDavid Howells trace_afs_io_error(call->debug_id, -EIO, where); 1443f51375cdSDavid Howells return -EIO; 1444f51375cdSDavid Howells } 1445f51375cdSDavid Howells 1446f51375cdSDavid Howells static inline int afs_bad(struct afs_vnode *vnode, enum afs_file_error where) 1447f51375cdSDavid Howells { 1448f51375cdSDavid Howells trace_afs_file_error(vnode, -EIO, where); 1449f51375cdSDavid Howells return -EIO; 1450f51375cdSDavid Howells } 1451d2ddc776SDavid Howells 145208e0e7c8SDavid Howells /*****************************************************************************/ 145308e0e7c8SDavid Howells /* 145408e0e7c8SDavid Howells * debug tracing 145508e0e7c8SDavid Howells */ 145608e0e7c8SDavid Howells extern unsigned afs_debug; 145708e0e7c8SDavid Howells 145808e0e7c8SDavid Howells #define dbgprintk(FMT,...) \ 1459ad16df84SSven Schnelle printk("[%-6.6s] "FMT"\n", current->comm ,##__VA_ARGS__) 146008e0e7c8SDavid Howells 1461530b6412SHarvey Harrison #define kenter(FMT,...) dbgprintk("==> %s("FMT")",__func__ ,##__VA_ARGS__) 1462530b6412SHarvey Harrison #define kleave(FMT,...) dbgprintk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) 146308e0e7c8SDavid Howells #define kdebug(FMT,...) dbgprintk(" "FMT ,##__VA_ARGS__) 146408e0e7c8SDavid Howells 146508e0e7c8SDavid Howells 146608e0e7c8SDavid Howells #if defined(__KDEBUG) 146708e0e7c8SDavid Howells #define _enter(FMT,...) kenter(FMT,##__VA_ARGS__) 146808e0e7c8SDavid Howells #define _leave(FMT,...) kleave(FMT,##__VA_ARGS__) 146908e0e7c8SDavid Howells #define _debug(FMT,...) kdebug(FMT,##__VA_ARGS__) 147008e0e7c8SDavid Howells 147108e0e7c8SDavid Howells #elif defined(CONFIG_AFS_DEBUG) 147208e0e7c8SDavid Howells #define AFS_DEBUG_KENTER 0x01 147308e0e7c8SDavid Howells #define AFS_DEBUG_KLEAVE 0x02 147408e0e7c8SDavid Howells #define AFS_DEBUG_KDEBUG 0x04 147508e0e7c8SDavid Howells 147608e0e7c8SDavid Howells #define _enter(FMT,...) \ 147708e0e7c8SDavid Howells do { \ 147808e0e7c8SDavid Howells if (unlikely(afs_debug & AFS_DEBUG_KENTER)) \ 147908e0e7c8SDavid Howells kenter(FMT,##__VA_ARGS__); \ 148008e0e7c8SDavid Howells } while (0) 148108e0e7c8SDavid Howells 148208e0e7c8SDavid Howells #define _leave(FMT,...) \ 148308e0e7c8SDavid Howells do { \ 148408e0e7c8SDavid Howells if (unlikely(afs_debug & AFS_DEBUG_KLEAVE)) \ 148508e0e7c8SDavid Howells kleave(FMT,##__VA_ARGS__); \ 148608e0e7c8SDavid Howells } while (0) 148708e0e7c8SDavid Howells 148808e0e7c8SDavid Howells #define _debug(FMT,...) \ 148908e0e7c8SDavid Howells do { \ 149008e0e7c8SDavid Howells if (unlikely(afs_debug & AFS_DEBUG_KDEBUG)) \ 149108e0e7c8SDavid Howells kdebug(FMT,##__VA_ARGS__); \ 149208e0e7c8SDavid Howells } while (0) 149308e0e7c8SDavid Howells 149408e0e7c8SDavid Howells #else 149512fdff3fSDavid Howells #define _enter(FMT,...) no_printk("==> %s("FMT")",__func__ ,##__VA_ARGS__) 149612fdff3fSDavid Howells #define _leave(FMT,...) no_printk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) 149712fdff3fSDavid Howells #define _debug(FMT,...) no_printk(" "FMT ,##__VA_ARGS__) 149808e0e7c8SDavid Howells #endif 149908e0e7c8SDavid Howells 150008e0e7c8SDavid Howells /* 150108e0e7c8SDavid Howells * debug assertion checking 150208e0e7c8SDavid Howells */ 150308e0e7c8SDavid Howells #if 1 // defined(__KDEBUGALL) 150408e0e7c8SDavid Howells 150508e0e7c8SDavid Howells #define ASSERT(X) \ 150608e0e7c8SDavid Howells do { \ 150708e0e7c8SDavid Howells if (unlikely(!(X))) { \ 150808e0e7c8SDavid Howells printk(KERN_ERR "\n"); \ 150908e0e7c8SDavid Howells printk(KERN_ERR "AFS: Assertion failed\n"); \ 151008e0e7c8SDavid Howells BUG(); \ 151108e0e7c8SDavid Howells } \ 151208e0e7c8SDavid Howells } while(0) 151308e0e7c8SDavid Howells 151408e0e7c8SDavid Howells #define ASSERTCMP(X, OP, Y) \ 151508e0e7c8SDavid Howells do { \ 151608e0e7c8SDavid Howells if (unlikely(!((X) OP (Y)))) { \ 151708e0e7c8SDavid Howells printk(KERN_ERR "\n"); \ 151808e0e7c8SDavid Howells printk(KERN_ERR "AFS: Assertion failed\n"); \ 151908e0e7c8SDavid Howells printk(KERN_ERR "%lu " #OP " %lu is false\n", \ 152008e0e7c8SDavid Howells (unsigned long)(X), (unsigned long)(Y)); \ 152108e0e7c8SDavid Howells printk(KERN_ERR "0x%lx " #OP " 0x%lx is false\n", \ 152208e0e7c8SDavid Howells (unsigned long)(X), (unsigned long)(Y)); \ 152308e0e7c8SDavid Howells BUG(); \ 152408e0e7c8SDavid Howells } \ 152508e0e7c8SDavid Howells } while(0) 152608e0e7c8SDavid Howells 1527416351f2SDavid Howells #define ASSERTRANGE(L, OP1, N, OP2, H) \ 1528416351f2SDavid Howells do { \ 1529416351f2SDavid Howells if (unlikely(!((L) OP1 (N)) || !((N) OP2 (H)))) { \ 1530416351f2SDavid Howells printk(KERN_ERR "\n"); \ 1531416351f2SDavid Howells printk(KERN_ERR "AFS: Assertion failed\n"); \ 1532416351f2SDavid Howells printk(KERN_ERR "%lu "#OP1" %lu "#OP2" %lu is false\n", \ 1533416351f2SDavid Howells (unsigned long)(L), (unsigned long)(N), \ 1534416351f2SDavid Howells (unsigned long)(H)); \ 1535416351f2SDavid Howells printk(KERN_ERR "0x%lx "#OP1" 0x%lx "#OP2" 0x%lx is false\n", \ 1536416351f2SDavid Howells (unsigned long)(L), (unsigned long)(N), \ 1537416351f2SDavid Howells (unsigned long)(H)); \ 1538416351f2SDavid Howells BUG(); \ 1539416351f2SDavid Howells } \ 1540416351f2SDavid Howells } while(0) 1541416351f2SDavid Howells 154208e0e7c8SDavid Howells #define ASSERTIF(C, X) \ 154308e0e7c8SDavid Howells do { \ 154408e0e7c8SDavid Howells if (unlikely((C) && !(X))) { \ 154508e0e7c8SDavid Howells printk(KERN_ERR "\n"); \ 154608e0e7c8SDavid Howells printk(KERN_ERR "AFS: Assertion failed\n"); \ 154708e0e7c8SDavid Howells BUG(); \ 154808e0e7c8SDavid Howells } \ 154908e0e7c8SDavid Howells } while(0) 155008e0e7c8SDavid Howells 155108e0e7c8SDavid Howells #define ASSERTIFCMP(C, X, OP, Y) \ 155208e0e7c8SDavid Howells do { \ 155308e0e7c8SDavid Howells if (unlikely((C) && !((X) OP (Y)))) { \ 155408e0e7c8SDavid Howells printk(KERN_ERR "\n"); \ 155508e0e7c8SDavid Howells printk(KERN_ERR "AFS: Assertion failed\n"); \ 155608e0e7c8SDavid Howells printk(KERN_ERR "%lu " #OP " %lu is false\n", \ 155708e0e7c8SDavid Howells (unsigned long)(X), (unsigned long)(Y)); \ 155808e0e7c8SDavid Howells printk(KERN_ERR "0x%lx " #OP " 0x%lx is false\n", \ 155908e0e7c8SDavid Howells (unsigned long)(X), (unsigned long)(Y)); \ 156008e0e7c8SDavid Howells BUG(); \ 156108e0e7c8SDavid Howells } \ 156208e0e7c8SDavid Howells } while(0) 156308e0e7c8SDavid Howells 156408e0e7c8SDavid Howells #else 156508e0e7c8SDavid Howells 156608e0e7c8SDavid Howells #define ASSERT(X) \ 156708e0e7c8SDavid Howells do { \ 156808e0e7c8SDavid Howells } while(0) 156908e0e7c8SDavid Howells 157008e0e7c8SDavid Howells #define ASSERTCMP(X, OP, Y) \ 157108e0e7c8SDavid Howells do { \ 157208e0e7c8SDavid Howells } while(0) 157308e0e7c8SDavid Howells 1574416351f2SDavid Howells #define ASSERTRANGE(L, OP1, N, OP2, H) \ 1575416351f2SDavid Howells do { \ 1576416351f2SDavid Howells } while(0) 1577416351f2SDavid Howells 157808e0e7c8SDavid Howells #define ASSERTIF(C, X) \ 157908e0e7c8SDavid Howells do { \ 158008e0e7c8SDavid Howells } while(0) 158108e0e7c8SDavid Howells 158208e0e7c8SDavid Howells #define ASSERTIFCMP(C, X, OP, Y) \ 158308e0e7c8SDavid Howells do { \ 158408e0e7c8SDavid Howells } while(0) 158508e0e7c8SDavid Howells 158608e0e7c8SDavid Howells #endif /* __KDEBUGALL */ 1587