12874c5fdSThomas Gleixner /* SPDX-License-Identifier: GPL-2.0-or-later */ 2ec26815aSDavid Howells /* internal AFS stuff 31da177e4SLinus Torvalds * 408e0e7c8SDavid Howells * Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved. 51da177e4SLinus Torvalds * Written by David Howells (dhowells@redhat.com) 61da177e4SLinus Torvalds */ 71da177e4SLinus Torvalds 81da177e4SLinus Torvalds #include <linux/compiler.h> 91da177e4SLinus Torvalds #include <linux/kernel.h> 108a79790bSTina Ruchandani #include <linux/ktime.h> 111da177e4SLinus Torvalds #include <linux/fs.h> 121da177e4SLinus Torvalds #include <linux/pagemap.h> 1308e0e7c8SDavid Howells #include <linux/rxrpc.h> 1400d3b7a4SDavid Howells #include <linux/key.h> 15e8edc6e0SAlexey Dobriyan #include <linux/workqueue.h> 1600c541eaSAndrew Morton #include <linux/sched.h> 1780e50be4SChristoph Hellwig #include <linux/fscache.h> 18e1da0222SJens Axboe #include <linux/backing-dev.h> 19ff548773SDavid Howells #include <linux/uuid.h> 200722f186SSouptick Joarder #include <linux/mm_types.h> 210a5143f2SDavid Howells #include <linux/dns_resolver.h> 22f044c884SDavid Howells #include <net/net_namespace.h> 235b86d4ffSDavid Howells #include <net/netns/generic.h> 245b86d4ffSDavid Howells #include <net/sock.h> 258324f0bcSDavid Howells #include <net/af_rxrpc.h> 2600c541eaSAndrew Morton 2708e0e7c8SDavid Howells #include "afs.h" 2808e0e7c8SDavid Howells #include "afs_vl.h" 2908e0e7c8SDavid Howells 3008e0e7c8SDavid Howells #define AFS_CELL_MAX_ADDRS 15 3108e0e7c8SDavid Howells 3231143d5dSDavid Howells struct pagevec; 3308e0e7c8SDavid Howells struct afs_call; 34c4508464SDavid Howells struct afs_vnode; 3508e0e7c8SDavid Howells 366c6c1d63SDavid Howells /* 376c6c1d63SDavid Howells * Partial file-locking emulation mode. (The problem being that AFS3 only 386c6c1d63SDavid Howells * allows whole-file locks and no upgrading/downgrading). 396c6c1d63SDavid Howells */ 406c6c1d63SDavid Howells enum afs_flock_mode { 416c6c1d63SDavid Howells afs_flock_mode_unset, 426c6c1d63SDavid Howells afs_flock_mode_local, /* Local locking only */ 436c6c1d63SDavid Howells afs_flock_mode_openafs, /* Don't get server lock for a partial lock */ 446c6c1d63SDavid Howells afs_flock_mode_strict, /* Always get a server lock for a partial lock */ 456c6c1d63SDavid Howells afs_flock_mode_write, /* Get an exclusive server lock for a partial lock */ 466c6c1d63SDavid Howells }; 476c6c1d63SDavid Howells 4813fcc683SDavid Howells struct afs_fs_context { 4900d3b7a4SDavid Howells bool force; /* T to force cell type */ 50bec5eb61Swanglei bool autocell; /* T if set auto mount operation */ 514d673da1SDavid Howells bool dyn_root; /* T if dynamic root */ 5213fcc683SDavid Howells bool no_cell; /* T if the source is "none" (for dynroot) */ 536c6c1d63SDavid Howells enum afs_flock_mode flock_mode; /* Partial file-locking emulation mode */ 5400d3b7a4SDavid Howells afs_voltype_t type; /* type of volume requested */ 5513fcc683SDavid Howells unsigned int volnamesz; /* size of volume name */ 5600d3b7a4SDavid Howells const char *volname; /* name of volume to mount */ 575b86d4ffSDavid Howells struct afs_net *net; /* the AFS net namespace stuff */ 5800d3b7a4SDavid Howells struct afs_cell *cell; /* cell in which to find volume */ 5900d3b7a4SDavid Howells struct afs_volume *volume; /* volume record */ 6000d3b7a4SDavid Howells struct key *key; /* key to use for secure mounting */ 6100d3b7a4SDavid Howells }; 6200d3b7a4SDavid Howells 638e8d7f13SDavid Howells enum afs_call_state { 6498bf40cdSDavid Howells AFS_CALL_CL_REQUESTING, /* Client: Request is being sent */ 6598bf40cdSDavid Howells AFS_CALL_CL_AWAIT_REPLY, /* Client: Awaiting reply */ 6698bf40cdSDavid Howells AFS_CALL_CL_PROC_REPLY, /* Client: rxrpc call complete; processing reply */ 6798bf40cdSDavid Howells AFS_CALL_SV_AWAIT_OP_ID, /* Server: Awaiting op ID */ 6898bf40cdSDavid Howells AFS_CALL_SV_AWAIT_REQUEST, /* Server: Awaiting request data */ 6998bf40cdSDavid Howells AFS_CALL_SV_REPLYING, /* Server: Replying */ 7098bf40cdSDavid Howells AFS_CALL_SV_AWAIT_ACK, /* Server: Awaiting final ACK */ 718e8d7f13SDavid Howells AFS_CALL_COMPLETE, /* Completed or failed */ 728e8d7f13SDavid Howells }; 73f044c884SDavid Howells 7408e0e7c8SDavid Howells /* 758b2a464cSDavid Howells * List of server addresses. 768b2a464cSDavid Howells */ 778b2a464cSDavid Howells struct afs_addr_list { 78ddd2b85fSJann Horn struct rcu_head rcu; 798b2a464cSDavid Howells refcount_t usage; 80d2ddc776SDavid Howells u32 version; /* Version */ 8168eb64c3SDavid Howells unsigned char max_addrs; 8268eb64c3SDavid Howells unsigned char nr_addrs; 833bf0fb6fSDavid Howells unsigned char preferred; /* Preferred address */ 8468eb64c3SDavid Howells unsigned char nr_ipv4; /* Number of IPv4 addresses */ 850a5143f2SDavid Howells enum dns_record_source source:8; 860a5143f2SDavid Howells enum dns_lookup_status status:8; 873bf0fb6fSDavid Howells unsigned long failed; /* Mask of addrs that failed locally/ICMP */ 883bf0fb6fSDavid Howells unsigned long responded; /* Mask of addrs that responded */ 898b2a464cSDavid Howells struct sockaddr_rxrpc addrs[]; 9068eb64c3SDavid Howells #define AFS_MAX_ADDRESSES ((unsigned int)(sizeof(unsigned long) * 8)) 918b2a464cSDavid Howells }; 928b2a464cSDavid Howells 938b2a464cSDavid Howells /* 9408e0e7c8SDavid Howells * a record of an in-progress RxRPC call 9508e0e7c8SDavid Howells */ 9608e0e7c8SDavid Howells struct afs_call { 9708e0e7c8SDavid Howells const struct afs_call_type *type; /* type of call */ 983bf0fb6fSDavid Howells struct afs_addr_list *alist; /* Address is alist[addr_ix] */ 9908e0e7c8SDavid Howells wait_queue_head_t waitq; /* processes awaiting completion */ 100341f741fSDavid Howells struct work_struct async_work; /* async I/O processor */ 10108e0e7c8SDavid Howells struct work_struct work; /* actual work processor */ 10208e0e7c8SDavid Howells struct rxrpc_call *rxcall; /* RxRPC call handle */ 10308e0e7c8SDavid Howells struct key *key; /* security for this call */ 104f044c884SDavid Howells struct afs_net *net; /* The network namespace */ 105a6853b9cSDavid Howells struct afs_server *server; /* The fileserver record if fs op (pins ref) */ 106a6853b9cSDavid Howells struct afs_vlserver *vlserver; /* The vlserver record if vl op */ 10708e0e7c8SDavid Howells void *request; /* request data (first part) */ 108f105da1aSDavid Howells size_t iov_len; /* Size of *iter to be used */ 109fc276122SDavid Howells struct iov_iter def_iter; /* Default buffer/data iterator */ 110*bd80d8a8SDavid Howells struct iov_iter *write_iter; /* Iterator defining write to be made */ 111fc276122SDavid Howells struct iov_iter *iter; /* Iterator currently in use */ 112fc276122SDavid Howells union { /* Convenience for ->def_iter */ 11312bdcf33SDavid Howells struct kvec kvec[1]; 11412bdcf33SDavid Howells struct bio_vec bvec[1]; 11512bdcf33SDavid Howells }; 11608e0e7c8SDavid Howells void *buffer; /* reply receive buffer */ 117ffba718eSDavid Howells union { 118ffba718eSDavid Howells long ret0; /* Value to reply with instead of 0 */ 119ffba718eSDavid Howells struct afs_addr_list *ret_alist; 120ffba718eSDavid Howells struct afs_vldb_entry *ret_vldb; 121c3e9f888SDavid Howells char *ret_str; 122ffba718eSDavid Howells }; 123e49c7b2fSDavid Howells struct afs_operation *op; 124ffba718eSDavid Howells unsigned int server_index; 125341f741fSDavid Howells atomic_t usage; 1268e8d7f13SDavid Howells enum afs_call_state state; 12798bf40cdSDavid Howells spinlock_t state_lock; 12808e0e7c8SDavid Howells int error; /* error code */ 129d001648eSDavid Howells u32 abort_code; /* Remote abort ID or 0 */ 13094f699c9SDavid Howells unsigned int max_lifespan; /* Maximum lifespan to set if not 0 */ 13108e0e7c8SDavid Howells unsigned request_size; /* size of request data */ 13208e0e7c8SDavid Howells unsigned reply_max; /* maximum size of reply */ 133bcd89270SMarc Dionne unsigned count2; /* count used in unmarshalling */ 13408e0e7c8SDavid Howells unsigned char unmarshall; /* unmarshalling phase */ 1353bf0fb6fSDavid Howells unsigned char addr_ix; /* Address in ->alist */ 136dde9f095SDavid Howells bool drop_ref; /* T if need to drop ref for incoming call */ 137d001648eSDavid Howells bool need_attention; /* T if RxRPC poked us */ 13856ff9c83SDavid Howells bool async; /* T if asynchronous */ 139a68f4a27SDavid Howells bool upgrade; /* T to request service upgrade */ 1404571577fSDavid Howells bool have_reply_time; /* T if have got reply_time */ 14120b8391fSDavid Howells bool intr; /* T if interruptible */ 14238355eecSDavid Howells bool unmarshalling_error; /* T if an unmarshalling error occurred */ 143bf99a53cSDavid Howells u16 service_id; /* Actual service ID (after upgrade) */ 144a25e21f0SDavid Howells unsigned int debug_id; /* Trace ID */ 14550a2c953SDavid Howells u32 operation_ID; /* operation ID for an incoming call */ 14608e0e7c8SDavid Howells u32 count; /* count for use in unmarshalling */ 14712bdcf33SDavid Howells union { /* place to extract temporary data */ 14812bdcf33SDavid Howells struct { 14912bdcf33SDavid Howells __be32 tmp_u; 15012bdcf33SDavid Howells __be32 tmp; 15112bdcf33SDavid Howells } __attribute__((packed)); 15212bdcf33SDavid Howells __be64 tmp64; 15312bdcf33SDavid Howells }; 15412d8e95aSDavid Howells ktime_t reply_time; /* Time of first reply packet */ 15508e0e7c8SDavid Howells }; 15608e0e7c8SDavid Howells 15708e0e7c8SDavid Howells struct afs_call_type { 15800d3b7a4SDavid Howells const char *name; 159025db80cSDavid Howells unsigned int op; /* Really enum afs_fs_operation */ 16000d3b7a4SDavid Howells 16108e0e7c8SDavid Howells /* deliver request or reply data to an call 16208e0e7c8SDavid Howells * - returning an error will cause the call to be aborted 16308e0e7c8SDavid Howells */ 164d001648eSDavid Howells int (*deliver)(struct afs_call *call); 16508e0e7c8SDavid Howells 16608e0e7c8SDavid Howells /* clean up a call */ 16708e0e7c8SDavid Howells void (*destructor)(struct afs_call *call); 168341f741fSDavid Howells 169341f741fSDavid Howells /* Work function */ 170341f741fSDavid Howells void (*work)(struct work_struct *work); 1713bf0fb6fSDavid Howells 1723bf0fb6fSDavid Howells /* Call done function (gets called immediately on success or failure) */ 1733bf0fb6fSDavid Howells void (*done)(struct afs_call *call); 17408e0e7c8SDavid Howells }; 17508e0e7c8SDavid Howells 17608e0e7c8SDavid Howells /* 1774343d008SDavid Howells * Key available for writeback on a file. 1784343d008SDavid Howells */ 1794343d008SDavid Howells struct afs_wb_key { 1804343d008SDavid Howells refcount_t usage; 1814343d008SDavid Howells struct key *key; 1824343d008SDavid Howells struct list_head vnode_link; /* Link in vnode->wb_keys */ 1834343d008SDavid Howells }; 1844343d008SDavid Howells 1854343d008SDavid Howells /* 186215804a9SDavid Howells * AFS open file information record. Pointed to by file->private_data. 187215804a9SDavid Howells */ 188215804a9SDavid Howells struct afs_file { 189215804a9SDavid Howells struct key *key; /* The key this file was opened with */ 1904343d008SDavid Howells struct afs_wb_key *wb; /* Writeback key record for this file */ 191215804a9SDavid Howells }; 192215804a9SDavid Howells 193215804a9SDavid Howells static inline struct key *afs_file_key(struct file *file) 194215804a9SDavid Howells { 195215804a9SDavid Howells struct afs_file *af = file->private_data; 196215804a9SDavid Howells 197215804a9SDavid Howells return af->key; 198215804a9SDavid Howells } 199215804a9SDavid Howells 200215804a9SDavid Howells /* 201196ee9cdSDavid Howells * Record of an outstanding read operation on a vnode. 202196ee9cdSDavid Howells */ 203196ee9cdSDavid Howells struct afs_read { 204196ee9cdSDavid Howells loff_t pos; /* Where to start reading */ 205e8e581a8SDavid Howells loff_t len; /* How much we're asking for */ 206196ee9cdSDavid Howells loff_t actual_len; /* How much we're actually getting */ 207f3ddee8dSDavid Howells loff_t file_size; /* File size returned by server */ 208c69bf479SDavid Howells struct key *key; /* The key to use to reissue the read */ 209c4508464SDavid Howells struct afs_vnode *vnode; /* The file being read into. */ 210f3ddee8dSDavid Howells afs_dataversion_t data_version; /* Version number returned by server */ 211f3ddee8dSDavid Howells refcount_t usage; 212c4508464SDavid Howells unsigned int call_debug_id; 213196ee9cdSDavid Howells unsigned int nr_pages; 214c4508464SDavid Howells int error; 215c4508464SDavid Howells void (*done)(struct afs_read *); 216c4508464SDavid Howells void (*cleanup)(struct afs_read *); 217c4508464SDavid Howells struct iov_iter *iter; /* Iterator representing the buffer */ 218c4508464SDavid Howells struct iov_iter def_iter; /* Default iterator */ 219196ee9cdSDavid Howells }; 220196ee9cdSDavid Howells 221196ee9cdSDavid Howells /* 22208e0e7c8SDavid Howells * AFS superblock private data 22308e0e7c8SDavid Howells * - there's one superblock per volume 22408e0e7c8SDavid Howells */ 22508e0e7c8SDavid Howells struct afs_super_info { 2265b86d4ffSDavid Howells struct net *net_ns; /* Network namespace */ 22749566f6fSDavid Howells struct afs_cell *cell; /* The cell in which the volume resides */ 22808e0e7c8SDavid Howells struct afs_volume *volume; /* volume record */ 2296c6c1d63SDavid Howells enum afs_flock_mode flock_mode:8; /* File locking emulation mode */ 2304d673da1SDavid Howells bool dyn_root; /* True if dynamic root */ 23108e0e7c8SDavid Howells }; 23208e0e7c8SDavid Howells 23308e0e7c8SDavid Howells static inline struct afs_super_info *AFS_FS_S(struct super_block *sb) 23408e0e7c8SDavid Howells { 23508e0e7c8SDavid Howells return sb->s_fs_info; 23608e0e7c8SDavid Howells } 23708e0e7c8SDavid Howells 23808e0e7c8SDavid Howells extern struct file_system_type afs_fs_type; 23908e0e7c8SDavid Howells 24008e0e7c8SDavid Howells /* 2416f8880d8SDavid Howells * Set of substitutes for @sys. 2426f8880d8SDavid Howells */ 2436f8880d8SDavid Howells struct afs_sysnames { 2446f8880d8SDavid Howells #define AFS_NR_SYSNAME 16 2456f8880d8SDavid Howells char *subs[AFS_NR_SYSNAME]; 2466f8880d8SDavid Howells refcount_t usage; 2476f8880d8SDavid Howells unsigned short nr; 2486f8880d8SDavid Howells char blank[1]; 2496f8880d8SDavid Howells }; 2506f8880d8SDavid Howells 2516f8880d8SDavid Howells /* 252f044c884SDavid Howells * AFS network namespace record. 253f044c884SDavid Howells */ 254f044c884SDavid Howells struct afs_net { 2555b86d4ffSDavid Howells struct net *net; /* Backpointer to the owning net namespace */ 256f044c884SDavid Howells struct afs_uuid uuid; 257f044c884SDavid Howells bool live; /* F if this namespace is being removed */ 258f044c884SDavid Howells 259f044c884SDavid Howells /* AF_RXRPC I/O stuff */ 260f044c884SDavid Howells struct socket *socket; 261f044c884SDavid Howells struct afs_call *spare_incoming_call; 262f044c884SDavid Howells struct work_struct charge_preallocation_work; 263f044c884SDavid Howells struct mutex socket_mutex; 264f044c884SDavid Howells atomic_t nr_outstanding_calls; 265f044c884SDavid Howells atomic_t nr_superblocks; 266f044c884SDavid Howells 267f044c884SDavid Howells /* Cell database */ 268989782dcSDavid Howells struct rb_root cells; 26992e3cc91SDavid Howells struct afs_cell *ws_cell; 270989782dcSDavid Howells struct work_struct cells_manager; 271989782dcSDavid Howells struct timer_list cells_timer; 272989782dcSDavid Howells atomic_t cells_outstanding; 27392e3cc91SDavid Howells struct rw_semaphore cells_lock; 2748a070a96SDavid Howells struct mutex cells_alias_lock; 275f044c884SDavid Howells 2760da0b7fdSDavid Howells struct mutex proc_cells_lock; 2776b3944e4SDavid Howells struct hlist_head proc_cells; 278f044c884SDavid Howells 279d2ddc776SDavid Howells /* Known servers. Theoretically each fileserver can only be in one 280d2ddc776SDavid Howells * cell, but in practice, people create aliases and subsets and there's 281d2ddc776SDavid Howells * no easy way to distinguish them. 282d2ddc776SDavid Howells */ 283f6cbb368SDavid Howells seqlock_t fs_lock; /* For fs_servers, fs_probe_*, fs_proc */ 284d2ddc776SDavid Howells struct rb_root fs_servers; /* afs_server (by server UUID or address) */ 285f6cbb368SDavid Howells struct list_head fs_probe_fast; /* List of afs_server to probe at 30s intervals */ 286f6cbb368SDavid Howells struct list_head fs_probe_slow; /* List of afs_server to probe at 5m intervals */ 287d2ddc776SDavid Howells struct hlist_head fs_proc; /* procfs servers list */ 288d2ddc776SDavid Howells 289d2ddc776SDavid Howells struct hlist_head fs_addresses4; /* afs_server (by lowest IPv4 addr) */ 290d2ddc776SDavid Howells struct hlist_head fs_addresses6; /* afs_server (by lowest IPv6 addr) */ 291d2ddc776SDavid Howells seqlock_t fs_addr_lock; /* For fs_addresses[46] */ 292d2ddc776SDavid Howells 293d2ddc776SDavid Howells struct work_struct fs_manager; 294d2ddc776SDavid Howells struct timer_list fs_timer; 295f6cbb368SDavid Howells 296f6cbb368SDavid Howells struct work_struct fs_prober; 297f6cbb368SDavid Howells struct timer_list fs_probe_timer; 298d2ddc776SDavid Howells atomic_t servers_outstanding; 299f044c884SDavid Howells 300f044c884SDavid Howells /* File locking renewal management */ 301f044c884SDavid Howells struct mutex lock_manager_mutex; 302f044c884SDavid Howells 303f044c884SDavid Howells /* Misc */ 3040da0b7fdSDavid Howells struct super_block *dynroot_sb; /* Dynamic root mount superblock */ 305f044c884SDavid Howells struct proc_dir_entry *proc_afs; /* /proc/net/afs directory */ 3066f8880d8SDavid Howells struct afs_sysnames *sysnames; 3076f8880d8SDavid Howells rwlock_t sysnames_lock; 308d55b4da4SDavid Howells 309d55b4da4SDavid Howells /* Statistics counters */ 310d55b4da4SDavid Howells atomic_t n_lookup; /* Number of lookups done */ 311d55b4da4SDavid Howells atomic_t n_reval; /* Number of dentries needing revalidation */ 312d55b4da4SDavid Howells atomic_t n_inval; /* Number of invalidations by the server */ 313f3ddee8dSDavid Howells atomic_t n_relpg; /* Number of invalidations by releasepage */ 314d55b4da4SDavid Howells atomic_t n_read_dir; /* Number of directory pages read */ 31563a4681fSDavid Howells atomic_t n_dir_cr; /* Number of directory entry creation edits */ 31663a4681fSDavid Howells atomic_t n_dir_rm; /* Number of directory entry removal edits */ 31776a5cb6fSDavid Howells atomic_t n_stores; /* Number of store ops */ 31876a5cb6fSDavid Howells atomic_long_t n_store_bytes; /* Number of bytes stored */ 31976a5cb6fSDavid Howells atomic_long_t n_fetch_bytes; /* Number of bytes fetched */ 32076a5cb6fSDavid Howells atomic_t n_fetches; /* Number of data fetch ops */ 321f044c884SDavid Howells }; 322f044c884SDavid Howells 3236f8880d8SDavid Howells extern const char afs_init_sysname[]; 324f044c884SDavid Howells 325989782dcSDavid Howells enum afs_cell_state { 326989782dcSDavid Howells AFS_CELL_UNSET, 327989782dcSDavid Howells AFS_CELL_ACTIVATING, 328989782dcSDavid Howells AFS_CELL_ACTIVE, 329989782dcSDavid Howells AFS_CELL_DEACTIVATING, 330989782dcSDavid Howells AFS_CELL_INACTIVE, 331989782dcSDavid Howells AFS_CELL_FAILED, 3321d0e850aSDavid Howells AFS_CELL_REMOVED, 333989782dcSDavid Howells }; 334989782dcSDavid Howells 335f044c884SDavid Howells /* 336d2ddc776SDavid Howells * AFS cell record. 337d2ddc776SDavid Howells * 338d2ddc776SDavid Howells * This is a tricky concept to get right as it is possible to create aliases 339d2ddc776SDavid Howells * simply by pointing AFSDB/SRV records for two names at the same set of VL 340d2ddc776SDavid Howells * servers; it is also possible to do things like setting up two sets of VL 341d2ddc776SDavid Howells * servers, one of which provides a superset of the volumes provided by the 342d2ddc776SDavid Howells * other (for internal/external division, for example). 343d2ddc776SDavid Howells * 344d2ddc776SDavid Howells * Cells only exist in the sense that (a) a cell's name maps to a set of VL 345d2ddc776SDavid Howells * servers and (b) a cell's name is used by the client to select the key to use 346d2ddc776SDavid Howells * for authentication and encryption. The cell name is not typically used in 347d2ddc776SDavid Howells * the protocol. 348d2ddc776SDavid Howells * 3498a070a96SDavid Howells * Two cells are determined to be aliases if they have an explicit alias (YFS 3508a070a96SDavid Howells * only), share any VL servers in common or have at least one volume in common. 3518a070a96SDavid Howells * "In common" means that the address list of the VL servers or the fileservers 3528a070a96SDavid Howells * share at least one endpoint. 35308e0e7c8SDavid Howells */ 35408e0e7c8SDavid Howells struct afs_cell { 355989782dcSDavid Howells union { 356989782dcSDavid Howells struct rcu_head rcu; 357989782dcSDavid Howells struct rb_node net_node; /* Node in net->cells */ 358989782dcSDavid Howells }; 359989782dcSDavid Howells struct afs_net *net; 3608a070a96SDavid Howells struct afs_cell *alias_of; /* The cell this is an alias of */ 3618a070a96SDavid Howells struct afs_volume *root_volume; /* The root.cell volume if there is one */ 36200d3b7a4SDavid Howells struct key *anonymous_key; /* anonymous user key for this cell */ 363989782dcSDavid Howells struct work_struct manager; /* Manager for init/deinit/dns */ 3646b3944e4SDavid Howells struct hlist_node proc_link; /* /proc cell list link */ 3659b3f26c9SDavid Howells #ifdef CONFIG_AFS_FSCACHE 3669b3f26c9SDavid Howells struct fscache_cookie *cache; /* caching cookie */ 3671da177e4SLinus Torvalds #endif 368989782dcSDavid Howells time64_t dns_expiry; /* Time AFSDB/SRV record expires */ 369989782dcSDavid Howells time64_t last_inactive; /* Time of last drop of usage count */ 37088c853c3SDavid Howells atomic_t ref; /* Struct refcount */ 37188c853c3SDavid Howells atomic_t active; /* Active usage counter */ 372989782dcSDavid Howells unsigned long flags; 373d5c32c89SDavid Howells #define AFS_CELL_FL_NO_GC 0 /* The cell was added manually, don't auto-gc */ 374d5c32c89SDavid Howells #define AFS_CELL_FL_DO_LOOKUP 1 /* DNS lookup requested */ 3758a070a96SDavid Howells #define AFS_CELL_FL_CHECK_ALIAS 2 /* Need to check for aliases */ 376989782dcSDavid Howells enum afs_cell_state state; 377989782dcSDavid Howells short error; 378d5c32c89SDavid Howells enum dns_record_source dns_source:8; /* Latest source of data from lookup */ 379d5c32c89SDavid Howells enum dns_lookup_status dns_status:8; /* Latest status of data from lookup */ 380d5c32c89SDavid Howells unsigned int dns_lookup_count; /* Counter of DNS lookups */ 381dca54a7bSDavid Howells unsigned int debug_id; 382989782dcSDavid Howells 38320325960SDavid Howells /* The volumes belonging to this cell */ 38420325960SDavid Howells struct rb_root volumes; /* Tree of volumes on this server */ 38520325960SDavid Howells struct hlist_head proc_volumes; /* procfs volume list */ 38620325960SDavid Howells seqlock_t volume_lock; /* For volumes */ 38720325960SDavid Howells 388d2ddc776SDavid Howells /* Active fileserver interaction state. */ 38920325960SDavid Howells struct rb_root fs_servers; /* afs_server (by server UUID) */ 39020325960SDavid Howells seqlock_t fs_lock; /* For fs_servers */ 391989782dcSDavid Howells 392d2ddc776SDavid Howells /* VL server list. */ 3930a5143f2SDavid Howells rwlock_t vl_servers_lock; /* Lock on vl_servers */ 3940a5143f2SDavid Howells struct afs_vlserver_list __rcu *vl_servers; 3950a5143f2SDavid Howells 396989782dcSDavid Howells u8 name_len; /* Length of name */ 397719fdd32SDavid Howells char *name; /* Cell name, case-flattened and NUL-padded */ 39808e0e7c8SDavid Howells }; 39908e0e7c8SDavid Howells 40008e0e7c8SDavid Howells /* 4010a5143f2SDavid Howells * Volume Location server record. 4020a5143f2SDavid Howells */ 4030a5143f2SDavid Howells struct afs_vlserver { 4040a5143f2SDavid Howells struct rcu_head rcu; 4050a5143f2SDavid Howells struct afs_addr_list __rcu *addresses; /* List of addresses for this VL server */ 4060a5143f2SDavid Howells unsigned long flags; 4070a5143f2SDavid Howells #define AFS_VLSERVER_FL_PROBED 0 /* The VL server has been probed */ 4080a5143f2SDavid Howells #define AFS_VLSERVER_FL_PROBING 1 /* VL server is being probed */ 4093bf0fb6fSDavid Howells #define AFS_VLSERVER_FL_IS_YFS 2 /* Server is YFS not AFS */ 410b95b3094SDavid Howells #define AFS_VLSERVER_FL_RESPONDING 3 /* VL server is responding */ 4110a5143f2SDavid Howells rwlock_t lock; /* Lock on addresses */ 4120a5143f2SDavid Howells atomic_t usage; 413b95b3094SDavid Howells unsigned int rtt; /* Server's current RTT in uS */ 4143bf0fb6fSDavid Howells 4153bf0fb6fSDavid Howells /* Probe state */ 4163bf0fb6fSDavid Howells wait_queue_head_t probe_wq; 4173bf0fb6fSDavid Howells atomic_t probe_outstanding; 4183bf0fb6fSDavid Howells spinlock_t probe_lock; 4193bf0fb6fSDavid Howells struct { 420b95b3094SDavid Howells unsigned int rtt; /* RTT in uS */ 4213bf0fb6fSDavid Howells u32 abort_code; 4223bf0fb6fSDavid Howells short error; 423fb72cd3dSDavid Howells unsigned short flags; 424fb72cd3dSDavid Howells #define AFS_VLSERVER_PROBE_RESPONDED 0x01 /* At least once response (may be abort) */ 425fb72cd3dSDavid Howells #define AFS_VLSERVER_PROBE_IS_YFS 0x02 /* The peer appears to be YFS */ 426fb72cd3dSDavid Howells #define AFS_VLSERVER_PROBE_NOT_YFS 0x04 /* The peer appears not to be YFS */ 427fb72cd3dSDavid Howells #define AFS_VLSERVER_PROBE_LOCAL_FAILURE 0x08 /* A local failure prevented a probe */ 4283bf0fb6fSDavid Howells } probe; 4293bf0fb6fSDavid Howells 4300a5143f2SDavid Howells u16 port; 4313bf0fb6fSDavid Howells u16 name_len; /* Length of name */ 4320a5143f2SDavid Howells char name[]; /* Server name, case-flattened */ 4330a5143f2SDavid Howells }; 4340a5143f2SDavid Howells 4350a5143f2SDavid Howells /* 4360a5143f2SDavid Howells * Weighted list of Volume Location servers. 4370a5143f2SDavid Howells */ 4380a5143f2SDavid Howells struct afs_vlserver_entry { 4390a5143f2SDavid Howells u16 priority; /* Preference (as SRV) */ 4400a5143f2SDavid Howells u16 weight; /* Weight (as SRV) */ 4410a5143f2SDavid Howells enum dns_record_source source:8; 4420a5143f2SDavid Howells enum dns_lookup_status status:8; 4430a5143f2SDavid Howells struct afs_vlserver *server; 4440a5143f2SDavid Howells }; 4450a5143f2SDavid Howells 4460a5143f2SDavid Howells struct afs_vlserver_list { 4470a5143f2SDavid Howells struct rcu_head rcu; 4480a5143f2SDavid Howells atomic_t usage; 4490a5143f2SDavid Howells u8 nr_servers; 4500a5143f2SDavid Howells u8 index; /* Server currently in use */ 4513bf0fb6fSDavid Howells u8 preferred; /* Preferred server */ 4520a5143f2SDavid Howells enum dns_record_source source:8; 4530a5143f2SDavid Howells enum dns_lookup_status status:8; 4540a5143f2SDavid Howells rwlock_t lock; 4550a5143f2SDavid Howells struct afs_vlserver_entry servers[]; 4560a5143f2SDavid Howells }; 4570a5143f2SDavid Howells 4580a5143f2SDavid Howells /* 459d2ddc776SDavid Howells * Cached VLDB entry. 460d2ddc776SDavid Howells * 461d2ddc776SDavid Howells * This is pointed to by cell->vldb_entries, indexed by name. 46208e0e7c8SDavid Howells */ 463d2ddc776SDavid Howells struct afs_vldb_entry { 464d2ddc776SDavid Howells afs_volid_t vid[3]; /* Volume IDs for R/W, R/O and Bak volumes */ 46500d3b7a4SDavid Howells 466d2ddc776SDavid Howells unsigned long flags; 467d2ddc776SDavid Howells #define AFS_VLDB_HAS_RW 0 /* - R/W volume exists */ 468d2ddc776SDavid Howells #define AFS_VLDB_HAS_RO 1 /* - R/O volume exists */ 469d2ddc776SDavid Howells #define AFS_VLDB_HAS_BAK 2 /* - Backup volume exists */ 470d2ddc776SDavid Howells #define AFS_VLDB_QUERY_VALID 3 /* - Record is valid */ 471d2ddc776SDavid Howells #define AFS_VLDB_QUERY_ERROR 4 /* - VL server returned error */ 472d2ddc776SDavid Howells 473d2ddc776SDavid Howells uuid_t fs_server[AFS_NMAXNSERVERS]; 47481006805SDavid Howells u32 addr_version[AFS_NMAXNSERVERS]; /* Registration change counters */ 475d2ddc776SDavid Howells u8 fs_mask[AFS_NMAXNSERVERS]; 47608e0e7c8SDavid Howells #define AFS_VOL_VTM_RW 0x01 /* R/W version of the volume is available (on this server) */ 47708e0e7c8SDavid Howells #define AFS_VOL_VTM_RO 0x02 /* R/O version of the volume is available (on this server) */ 47808e0e7c8SDavid Howells #define AFS_VOL_VTM_BAK 0x04 /* backup version of the volume is available (on this server) */ 479d2ddc776SDavid Howells short error; 480d2ddc776SDavid Howells u8 nr_servers; /* Number of server records */ 481d2ddc776SDavid Howells u8 name_len; 482d2ddc776SDavid Howells u8 name[AFS_MAXVOLNAME + 1]; /* NUL-padded volume name */ 48308e0e7c8SDavid Howells }; 48408e0e7c8SDavid Howells 48508e0e7c8SDavid Howells /* 486d2ddc776SDavid Howells * Record of fileserver with which we're actively communicating. 48708e0e7c8SDavid Howells */ 48808e0e7c8SDavid Howells struct afs_server { 489d2ddc776SDavid Howells struct rcu_head rcu; 490d2ddc776SDavid Howells union { 491d2ddc776SDavid Howells uuid_t uuid; /* Server ID */ 492d2ddc776SDavid Howells struct afs_uuid _uuid; 493d2ddc776SDavid Howells }; 494c435ee34SDavid Howells 495d2ddc776SDavid Howells struct afs_addr_list __rcu *addresses; 49620325960SDavid Howells struct afs_cell *cell; /* Cell to which belongs (pins ref) */ 4973c4c4075SDavid Howells struct rb_node uuid_rb; /* Link in net->fs_servers */ 4983c4c4075SDavid Howells struct afs_server __rcu *uuid_next; /* Next server with same UUID */ 4993c4c4075SDavid Howells struct afs_server *uuid_prev; /* Previous server with same UUID */ 500f6cbb368SDavid Howells struct list_head probe_link; /* Link in net->fs_probe_list */ 501d2ddc776SDavid Howells struct hlist_node addr4_link; /* Link in net->fs_addresses4 */ 502d2ddc776SDavid Howells struct hlist_node addr6_link; /* Link in net->fs_addresses6 */ 503d2ddc776SDavid Howells struct hlist_node proc_link; /* Link in net->fs_proc */ 504d2ddc776SDavid Howells struct afs_server *gc_next; /* Next server in manager's list */ 505977e5f8eSDavid Howells time64_t unuse_time; /* Time at which last unused */ 506c435ee34SDavid Howells unsigned long flags; 507f3c130e6SDavid Howells #define AFS_SERVER_FL_RESPONDING 0 /* The server is responding */ 50832275d3fSDavid Howells #define AFS_SERVER_FL_UPDATING 1 50932275d3fSDavid Howells #define AFS_SERVER_FL_NEEDS_UPDATE 2 /* Fileserver address list is out of date */ 51032275d3fSDavid Howells #define AFS_SERVER_FL_NOT_READY 4 /* The record is not ready for use */ 51132275d3fSDavid Howells #define AFS_SERVER_FL_NOT_FOUND 5 /* VL server says no such server */ 51232275d3fSDavid Howells #define AFS_SERVER_FL_VL_FAIL 6 /* Failed to access VL server */ 513f2686b09SDavid Howells #define AFS_SERVER_FL_MAY_HAVE_CB 8 /* May have callbacks on this fileserver */ 51432275d3fSDavid Howells #define AFS_SERVER_FL_IS_YFS 16 /* Server is YFS not AFS */ 51532275d3fSDavid Howells #define AFS_SERVER_FL_NO_IBULK 17 /* Fileserver doesn't support FS.InlineBulkStatus */ 51632275d3fSDavid Howells #define AFS_SERVER_FL_NO_RM2 18 /* Fileserver doesn't support YFS.RemoveFile2 */ 517977e5f8eSDavid Howells atomic_t ref; /* Object refcount */ 518977e5f8eSDavid Howells atomic_t active; /* Active user count */ 519d2ddc776SDavid Howells u32 addr_version; /* Address list version */ 520f3c130e6SDavid Howells unsigned int rtt; /* Server's current RTT in uS */ 52145218193SDavid Howells unsigned int debug_id; /* Debugging ID for traces */ 52208e0e7c8SDavid Howells 52308e0e7c8SDavid Howells /* file service access */ 524d2ddc776SDavid Howells rwlock_t fs_lock; /* access lock */ 52508e0e7c8SDavid Howells 52608e0e7c8SDavid Howells /* callback promise management */ 527c435ee34SDavid Howells unsigned cb_s_break; /* Break-everything counter. */ 5283bf0fb6fSDavid Howells 5293bf0fb6fSDavid Howells /* Probe state */ 530f6cbb368SDavid Howells unsigned long probed_at; /* Time last probe was dispatched (jiffies) */ 5313bf0fb6fSDavid Howells wait_queue_head_t probe_wq; 5323bf0fb6fSDavid Howells atomic_t probe_outstanding; 5333bf0fb6fSDavid Howells spinlock_t probe_lock; 5343bf0fb6fSDavid Howells struct { 535f3c130e6SDavid Howells unsigned int rtt; /* RTT in uS */ 5363bf0fb6fSDavid Howells u32 abort_code; 5373bf0fb6fSDavid Howells short error; 5383bf0fb6fSDavid Howells bool responded:1; 5393bf0fb6fSDavid Howells bool is_yfs:1; 5403bf0fb6fSDavid Howells bool not_yfs:1; 5413bf0fb6fSDavid Howells bool local_failure:1; 5423bf0fb6fSDavid Howells } probe; 543c435ee34SDavid Howells }; 544c435ee34SDavid Howells 545c435ee34SDavid Howells /* 546194d28cfSDavid Howells * Replaceable volume server list. 54708e0e7c8SDavid Howells */ 548d2ddc776SDavid Howells struct afs_server_entry { 549d2ddc776SDavid Howells struct afs_server *server; 550d2ddc776SDavid Howells }; 551d2ddc776SDavid Howells 552d2ddc776SDavid Howells struct afs_server_list { 553194d28cfSDavid Howells afs_volid_t vids[AFS_MAXTYPES]; /* Volume IDs */ 554d2ddc776SDavid Howells refcount_t usage; 5553bf0fb6fSDavid Howells unsigned char nr_servers; 5563bf0fb6fSDavid Howells unsigned char preferred; /* Preferred server */ 557d2ddc776SDavid Howells unsigned short vnovol_mask; /* Servers to be skipped due to VNOVOL */ 558d2ddc776SDavid Howells unsigned int seq; /* Set to ->servers_seq when installed */ 559d4a96becSDavid Howells rwlock_t lock; 560d2ddc776SDavid Howells struct afs_server_entry servers[]; 56108e0e7c8SDavid Howells }; 56208e0e7c8SDavid Howells 56308e0e7c8SDavid Howells /* 564d2ddc776SDavid Howells * Live AFS volume management. 56508e0e7c8SDavid Howells */ 566d2ddc776SDavid Howells struct afs_volume { 56720325960SDavid Howells union { 56820325960SDavid Howells struct rcu_head rcu; 569d2ddc776SDavid Howells afs_volid_t vid; /* volume ID */ 57020325960SDavid Howells }; 571d2ddc776SDavid Howells atomic_t usage; 572d2ddc776SDavid Howells time64_t update_at; /* Time at which to next update */ 573d2ddc776SDavid Howells struct afs_cell *cell; /* Cell to which belongs (pins ref) */ 57420325960SDavid Howells struct rb_node cell_node; /* Link in cell->volumes */ 57520325960SDavid Howells struct hlist_node proc_link; /* Link in cell->proc_volumes */ 57620325960SDavid Howells struct super_block __rcu *sb; /* Superblock on which inodes reside */ 577d2ddc776SDavid Howells unsigned long flags; 578d2ddc776SDavid Howells #define AFS_VOLUME_NEEDS_UPDATE 0 /* - T if an update needs performing */ 579d2ddc776SDavid Howells #define AFS_VOLUME_UPDATING 1 /* - T if an update is in progress */ 580d2ddc776SDavid Howells #define AFS_VOLUME_WAIT 2 /* - T if users must wait for update */ 581d2ddc776SDavid Howells #define AFS_VOLUME_DELETED 3 /* - T if volume appears deleted */ 582d2ddc776SDavid Howells #define AFS_VOLUME_OFFLINE 4 /* - T if volume offline notice given */ 583d2ddc776SDavid Howells #define AFS_VOLUME_BUSY 5 /* - T if volume busy notice given */ 58420325960SDavid Howells #define AFS_VOLUME_MAYBE_NO_IBULK 6 /* - T if some servers don't have InlineBulkStatus */ 585d2ddc776SDavid Howells #ifdef CONFIG_AFS_FSCACHE 586d2ddc776SDavid Howells struct fscache_cookie *cache; /* caching cookie */ 587d2ddc776SDavid Howells #endif 5888a070a96SDavid Howells struct afs_server_list __rcu *servers; /* List of servers on which volume resides */ 589d2ddc776SDavid Howells rwlock_t servers_lock; /* Lock for ->servers */ 590d2ddc776SDavid Howells unsigned int servers_seq; /* Incremented each time ->servers changes */ 591d2ddc776SDavid Howells 59268251f0aSDavid Howells unsigned cb_v_break; /* Break-everything counter. */ 59390fa9b64SDavid Howells rwlock_t cb_v_break_lock; 59468251f0aSDavid Howells 595d2ddc776SDavid Howells afs_voltype_t type; /* type of volume */ 596d2ddc776SDavid Howells char type_force; /* force volume type (suppress R/O -> R/W) */ 597d2ddc776SDavid Howells u8 name_len; 598d2ddc776SDavid Howells u8 name[AFS_MAXVOLNAME + 1]; /* NUL-padded volume name */ 59908e0e7c8SDavid Howells }; 60008e0e7c8SDavid Howells 6010fafdc9fSDavid Howells enum afs_lock_state { 6020fafdc9fSDavid Howells AFS_VNODE_LOCK_NONE, /* The vnode has no lock on the server */ 6030fafdc9fSDavid Howells AFS_VNODE_LOCK_WAITING_FOR_CB, /* We're waiting for the server to break the callback */ 6040fafdc9fSDavid Howells AFS_VNODE_LOCK_SETTING, /* We're asking the server for a lock */ 6050fafdc9fSDavid Howells AFS_VNODE_LOCK_GRANTED, /* We have a lock on the server */ 6060fafdc9fSDavid Howells AFS_VNODE_LOCK_EXTENDING, /* We're extending a lock on the server */ 6070fafdc9fSDavid Howells AFS_VNODE_LOCK_NEED_UNLOCK, /* We need to unlock on the server */ 6080fafdc9fSDavid Howells AFS_VNODE_LOCK_UNLOCKING, /* We're telling the server to unlock */ 609cdfb26b4SDavid Howells AFS_VNODE_LOCK_DELETED, /* The vnode has been deleted whilst we have a lock */ 6100fafdc9fSDavid Howells }; 6110fafdc9fSDavid Howells 61208e0e7c8SDavid Howells /* 613f8de483eSDavid Howells * AFS inode private data. 614f8de483eSDavid Howells * 615f8de483eSDavid Howells * Note that afs_alloc_inode() *must* reset anything that could incorrectly 616f8de483eSDavid Howells * leak from one inode to another. 61708e0e7c8SDavid Howells */ 61808e0e7c8SDavid Howells struct afs_vnode { 61908e0e7c8SDavid Howells struct inode vfs_inode; /* the VFS's inode record */ 62008e0e7c8SDavid Howells 62108e0e7c8SDavid Howells struct afs_volume *volume; /* volume on which vnode resides */ 62208e0e7c8SDavid Howells struct afs_fid fid; /* the file identifier for this inode */ 62308e0e7c8SDavid Howells struct afs_file_status status; /* AFS status info for this file */ 624a4ff7401SDavid Howells afs_dataversion_t invalid_before; /* Child dentries are invalid before this */ 6259b3f26c9SDavid Howells #ifdef CONFIG_AFS_FSCACHE 6269b3f26c9SDavid Howells struct fscache_cookie *cache; /* caching cookie */ 62708e0e7c8SDavid Howells #endif 628fe342cf7SDavid Howells struct afs_permits __rcu *permit_cache; /* cache of permits so far obtained */ 629d2ddc776SDavid Howells struct mutex io_lock; /* Lock for serialising I/O on this mutex */ 630b61f7dcfSDavid Howells struct rw_semaphore validate_lock; /* lock for validating this vnode */ 63179ddbfa5SDavid Howells struct rw_semaphore rmdir_lock; /* Lock for rmdir vs sillyrename */ 63279ddbfa5SDavid Howells struct key *silly_key; /* Silly rename key */ 6334343d008SDavid Howells spinlock_t wb_lock; /* lock for wb_keys */ 63408e0e7c8SDavid Howells spinlock_t lock; /* waitqueue/flags lock */ 63508e0e7c8SDavid Howells unsigned long flags; 636c435ee34SDavid Howells #define AFS_VNODE_CB_PROMISED 0 /* Set if vnode has a callback promise */ 637260a9803SDavid Howells #define AFS_VNODE_UNSET 1 /* set if vnode attributes not yet set */ 638f3ddee8dSDavid Howells #define AFS_VNODE_DIR_VALID 2 /* Set if dir contents are valid */ 63908e0e7c8SDavid Howells #define AFS_VNODE_ZAP_DATA 3 /* set if vnode's data should be invalidated */ 64008e0e7c8SDavid Howells #define AFS_VNODE_DELETED 4 /* set if vnode deleted on server */ 64108e0e7c8SDavid Howells #define AFS_VNODE_MOUNTPOINT 5 /* set if vnode is a mountpoint symlink */ 6420fafdc9fSDavid Howells #define AFS_VNODE_AUTOCELL 6 /* set if Vnode is an auto mount point */ 6430fafdc9fSDavid Howells #define AFS_VNODE_PSEUDODIR 7 /* set if Vnode is a pseudo directory */ 6445a813276SDavid Howells #define AFS_VNODE_NEW_CONTENT 8 /* Set if file has new content (create/trunc-0) */ 645b6489a49SDavid Howells #define AFS_VNODE_SILLY_DELETED 9 /* Set if file has been silly-deleted */ 64608e0e7c8SDavid Howells 6474343d008SDavid Howells struct list_head wb_keys; /* List of keys available for writeback */ 648e8d6c554SDavid Howells struct list_head pending_locks; /* locks waiting to be granted */ 649e8d6c554SDavid Howells struct list_head granted_locks; /* locks granted on this file */ 650e8d6c554SDavid Howells struct delayed_work lock_work; /* work to be done in locking */ 6510fafdc9fSDavid Howells struct key *lock_key; /* Key to be used in lock ops */ 652a690f60aSDavid Howells ktime_t locked_at; /* Time at which lock obtained */ 6530fafdc9fSDavid Howells enum afs_lock_state lock_state : 8; 6540fafdc9fSDavid Howells afs_lock_type_t lock_type : 8; 65531143d5dSDavid Howells 65608e0e7c8SDavid Howells /* outstanding callback notification on this file */ 65720325960SDavid Howells void *cb_server; /* Server with callback/filelock */ 658c435ee34SDavid Howells unsigned int cb_s_break; /* Mass break counter on ->server */ 65968251f0aSDavid Howells unsigned int cb_v_break; /* Mass break counter on ->volume */ 660c435ee34SDavid Howells unsigned int cb_break; /* Break counter on vnode */ 66120325960SDavid Howells seqlock_t cb_lock; /* Lock for ->cb_server, ->status, ->cb_*break */ 662c435ee34SDavid Howells 663c435ee34SDavid Howells time64_t cb_expires_at; /* time at which callback expires */ 66408e0e7c8SDavid Howells }; 66508e0e7c8SDavid Howells 66612bdcf33SDavid Howells static inline struct fscache_cookie *afs_vnode_cache(struct afs_vnode *vnode) 66712bdcf33SDavid Howells { 66812bdcf33SDavid Howells #ifdef CONFIG_AFS_FSCACHE 66912bdcf33SDavid Howells return vnode->cache; 67012bdcf33SDavid Howells #else 67112bdcf33SDavid Howells return NULL; 67212bdcf33SDavid Howells #endif 67312bdcf33SDavid Howells } 67412bdcf33SDavid Howells 67500d3b7a4SDavid Howells /* 67600d3b7a4SDavid Howells * cached security record for one user's attempt to access a vnode 67700d3b7a4SDavid Howells */ 67800d3b7a4SDavid Howells struct afs_permit { 67900d3b7a4SDavid Howells struct key *key; /* RxRPC ticket holding a security context */ 680be080a6fSDavid Howells afs_access_t access; /* CallerAccess value for this key */ 68100d3b7a4SDavid Howells }; 68200d3b7a4SDavid Howells 68300d3b7a4SDavid Howells /* 684be080a6fSDavid Howells * Immutable cache of CallerAccess records from attempts to access vnodes. 685be080a6fSDavid Howells * These may be shared between multiple vnodes. 68600d3b7a4SDavid Howells */ 68700d3b7a4SDavid Howells struct afs_permits { 688be080a6fSDavid Howells struct rcu_head rcu; 689be080a6fSDavid Howells struct hlist_node hash_node; /* Link in hash */ 690be080a6fSDavid Howells unsigned long h; /* Hash value for this permit list */ 691be080a6fSDavid Howells refcount_t usage; 692be080a6fSDavid Howells unsigned short nr_permits; /* Number of records */ 693be080a6fSDavid Howells bool invalidated; /* Invalidated due to key change */ 694be080a6fSDavid Howells struct afs_permit permits[]; /* List of permits sorted by key pointer */ 69500d3b7a4SDavid Howells }; 69600d3b7a4SDavid Howells 697b908fe6bSDavid Howells /* 6984584ae96SDavid Howells * Error prioritisation and accumulation. 6994584ae96SDavid Howells */ 7004584ae96SDavid Howells struct afs_error { 7014584ae96SDavid Howells short error; /* Accumulated error */ 7024584ae96SDavid Howells bool responded; /* T if server responded */ 7034584ae96SDavid Howells }; 7044584ae96SDavid Howells 7054584ae96SDavid Howells /* 7068b2a464cSDavid Howells * Cursor for iterating over a server's address list. 7078b2a464cSDavid Howells */ 7088b2a464cSDavid Howells struct afs_addr_cursor { 7098b2a464cSDavid Howells struct afs_addr_list *alist; /* Current address list (pins ref) */ 7103bf0fb6fSDavid Howells unsigned long tried; /* Tried addresses */ 7113bf0fb6fSDavid Howells signed char index; /* Current address */ 7128b2a464cSDavid Howells bool responded; /* T if the current address responded */ 713744bcd71SDavid Howells unsigned short nr_iterations; /* Number of address iterations */ 7143bf0fb6fSDavid Howells short error; 7153bf0fb6fSDavid Howells u32 abort_code; 7168b2a464cSDavid Howells }; 7178b2a464cSDavid Howells 7188b2a464cSDavid Howells /* 7190a5143f2SDavid Howells * Cursor for iterating over a set of volume location servers. 7200a5143f2SDavid Howells */ 7210a5143f2SDavid Howells struct afs_vl_cursor { 7220a5143f2SDavid Howells struct afs_addr_cursor ac; 7230a5143f2SDavid Howells struct afs_cell *cell; /* The cell we're querying */ 7240a5143f2SDavid Howells struct afs_vlserver_list *server_list; /* Current server list (pins ref) */ 7253bf0fb6fSDavid Howells struct afs_vlserver *server; /* Server on which this resides */ 7260a5143f2SDavid Howells struct key *key; /* Key for the server */ 7273bf0fb6fSDavid Howells unsigned long untried; /* Bitmask of untried servers */ 7283bf0fb6fSDavid Howells short index; /* Current server */ 7290a5143f2SDavid Howells short error; 7300a5143f2SDavid Howells unsigned short flags; 7310a5143f2SDavid Howells #define AFS_VL_CURSOR_STOP 0x0001 /* Set to cease iteration */ 7320a5143f2SDavid Howells #define AFS_VL_CURSOR_RETRY 0x0002 /* Set to do a retry */ 7330a5143f2SDavid Howells #define AFS_VL_CURSOR_RETRIED 0x0004 /* Set if started a retry */ 734744bcd71SDavid Howells unsigned short nr_iterations; /* Number of server iterations */ 7350a5143f2SDavid Howells }; 7360a5143f2SDavid Howells 7370a5143f2SDavid Howells /* 738e49c7b2fSDavid Howells * Fileserver operation methods. 739e49c7b2fSDavid Howells */ 740e49c7b2fSDavid Howells struct afs_operation_ops { 741e49c7b2fSDavid Howells void (*issue_afs_rpc)(struct afs_operation *op); 742e49c7b2fSDavid Howells void (*issue_yfs_rpc)(struct afs_operation *op); 743e49c7b2fSDavid Howells void (*success)(struct afs_operation *op); 744e49c7b2fSDavid Howells void (*aborted)(struct afs_operation *op); 745e49c7b2fSDavid Howells void (*edit_dir)(struct afs_operation *op); 746e49c7b2fSDavid Howells void (*put)(struct afs_operation *op); 747e49c7b2fSDavid Howells }; 748e49c7b2fSDavid Howells 749e49c7b2fSDavid Howells struct afs_vnode_param { 750e49c7b2fSDavid Howells struct afs_vnode *vnode; 751e49c7b2fSDavid Howells struct afs_fid fid; /* Fid to access */ 752e49c7b2fSDavid Howells struct afs_status_cb scb; /* Returned status and callback promise */ 753e49c7b2fSDavid Howells afs_dataversion_t dv_before; /* Data version before the call */ 754e49c7b2fSDavid Howells unsigned int cb_break_before; /* cb_break + cb_s_break before the call */ 755e49c7b2fSDavid Howells u8 dv_delta; /* Expected change in data version */ 756793fe82eSDavid Howells bool put_vnode:1; /* T if we have a ref on the vnode */ 757793fe82eSDavid Howells bool need_io_lock:1; /* T if we need the I/O lock on this */ 758793fe82eSDavid Howells bool update_ctime:1; /* Need to update the ctime */ 759793fe82eSDavid Howells bool set_size:1; /* Must update i_size */ 760b6489a49SDavid Howells bool op_unlinked:1; /* True if file was unlinked by op */ 761a9e5c87cSDavid Howells bool speculative:1; /* T if speculative status fetch (no vnode lock) */ 762e49c7b2fSDavid Howells }; 763e49c7b2fSDavid Howells 764e49c7b2fSDavid Howells /* 765e49c7b2fSDavid Howells * Fileserver operation wrapper, handling server and address rotation 766e49c7b2fSDavid Howells * asynchronously. May make simultaneous calls to multiple servers. 7678b2a464cSDavid Howells */ 768a310082fSDavid Howells struct afs_operation { 769e49c7b2fSDavid Howells struct afs_net *net; /* Network namespace */ 770e49c7b2fSDavid Howells struct key *key; /* Key for the cell */ 771a58823acSDavid Howells const struct afs_call_type *type; /* Type of call done */ 772e49c7b2fSDavid Howells const struct afs_operation_ops *ops; 773e49c7b2fSDavid Howells 774e49c7b2fSDavid Howells /* Parameters/results for the operation */ 775e49c7b2fSDavid Howells struct afs_volume *volume; /* Volume being accessed */ 776e49c7b2fSDavid Howells struct afs_vnode_param file[2]; 777e49c7b2fSDavid Howells struct afs_vnode_param *more_files; 778e49c7b2fSDavid Howells struct afs_volsync volsync; 779e49c7b2fSDavid Howells struct dentry *dentry; /* Dentry to be altered */ 780e49c7b2fSDavid Howells struct dentry *dentry_2; /* Second dentry to be altered */ 781e49c7b2fSDavid Howells struct timespec64 mtime; /* Modification time to record */ 782da8d0755SDavid Howells struct timespec64 ctime; /* Change time to set */ 783e49c7b2fSDavid Howells short nr_files; /* Number of entries in file[], more_files */ 784e49c7b2fSDavid Howells short error; 785e49c7b2fSDavid Howells unsigned int debug_id; 786e49c7b2fSDavid Howells 787e49c7b2fSDavid Howells unsigned int cb_v_break; /* Volume break counter before op */ 788e49c7b2fSDavid Howells unsigned int cb_s_break; /* Server break counter before op */ 789e49c7b2fSDavid Howells 790e49c7b2fSDavid Howells union { 791e49c7b2fSDavid Howells struct { 792e49c7b2fSDavid Howells int which; /* Which ->file[] to fetch for */ 793e49c7b2fSDavid Howells } fetch_status; 794e49c7b2fSDavid Howells struct { 795e49c7b2fSDavid Howells int reason; /* enum afs_edit_dir_reason */ 796e49c7b2fSDavid Howells mode_t mode; 797e49c7b2fSDavid Howells const char *symlink; 798e49c7b2fSDavid Howells } create; 799e49c7b2fSDavid Howells struct { 800e49c7b2fSDavid Howells bool need_rehash; 801e49c7b2fSDavid Howells } unlink; 802e49c7b2fSDavid Howells struct { 803e49c7b2fSDavid Howells struct dentry *rehash; 804e49c7b2fSDavid Howells struct dentry *tmp; 805e49c7b2fSDavid Howells bool new_negative; 806e49c7b2fSDavid Howells } rename; 807e49c7b2fSDavid Howells struct { 808e49c7b2fSDavid Howells struct afs_read *req; 809e49c7b2fSDavid Howells } fetch; 810e49c7b2fSDavid Howells struct { 811e49c7b2fSDavid Howells afs_lock_type_t type; 812e49c7b2fSDavid Howells } lock; 813e49c7b2fSDavid Howells struct { 814*bd80d8a8SDavid Howells struct iov_iter *write_iter; 815*bd80d8a8SDavid Howells loff_t pos; 816*bd80d8a8SDavid Howells loff_t size; 817*bd80d8a8SDavid Howells loff_t i_size; 818e49c7b2fSDavid Howells pgoff_t first; /* first page in mapping to deal with */ 819e49c7b2fSDavid Howells pgoff_t last; /* last page in mapping to deal with */ 820d383e346SDavid Howells bool laundering; /* Laundering page, PG_writeback not set */ 821e49c7b2fSDavid Howells } store; 822e49c7b2fSDavid Howells struct { 823e49c7b2fSDavid Howells struct iattr *attr; 824ec0fa0b6SDavid Howells loff_t old_i_size; 825e49c7b2fSDavid Howells } setattr; 826e49c7b2fSDavid Howells struct afs_acl *acl; 827e49c7b2fSDavid Howells struct yfs_acl *yacl; 828e49c7b2fSDavid Howells struct { 829e49c7b2fSDavid Howells struct afs_volume_status vs; 830e49c7b2fSDavid Howells struct kstatfs *buf; 831e49c7b2fSDavid Howells } volstatus; 832e49c7b2fSDavid Howells }; 833e49c7b2fSDavid Howells 834e49c7b2fSDavid Howells /* Fileserver iteration state */ 8358b2a464cSDavid Howells struct afs_addr_cursor ac; 836d2ddc776SDavid Howells struct afs_server_list *server_list; /* Current server list (pins ref) */ 83720325960SDavid Howells struct afs_server *server; /* Server we're using (ref pinned by server_list) */ 838e49c7b2fSDavid Howells struct afs_call *call; 8393bf0fb6fSDavid Howells unsigned long untried; /* Bitmask of untried servers */ 8403bf0fb6fSDavid Howells short index; /* Current server */ 841e49c7b2fSDavid Howells unsigned short nr_iterations; /* Number of server iterations */ 842e49c7b2fSDavid Howells 843e49c7b2fSDavid Howells unsigned int flags; 844a310082fSDavid Howells #define AFS_OPERATION_STOP 0x0001 /* Set to cease iteration */ 845a310082fSDavid Howells #define AFS_OPERATION_VBUSY 0x0002 /* Set if seen VBUSY */ 846a310082fSDavid Howells #define AFS_OPERATION_VMOVED 0x0004 /* Set if seen VMOVED */ 847a310082fSDavid Howells #define AFS_OPERATION_VNOVOL 0x0008 /* Set if seen VNOVOL */ 848a310082fSDavid Howells #define AFS_OPERATION_CUR_ONLY 0x0010 /* Set if current server only (file lock held) */ 849a310082fSDavid Howells #define AFS_OPERATION_NO_VSLEEP 0x0020 /* Set to prevent sleep on VBUSY, VOFFLINE, ... */ 850e49c7b2fSDavid Howells #define AFS_OPERATION_UNINTR 0x0040 /* Set if op is uninterruptible */ 851e49c7b2fSDavid Howells #define AFS_OPERATION_DOWNGRADE 0x0080 /* Set to retry with downgraded opcode */ 852e49c7b2fSDavid Howells #define AFS_OPERATION_LOCK_0 0x0100 /* Set if have io_lock on file[0] */ 853e49c7b2fSDavid Howells #define AFS_OPERATION_LOCK_1 0x0200 /* Set if have io_lock on file[1] */ 8548409f67bSDavid Howells #define AFS_OPERATION_TRIED_ALL 0x0400 /* Set if we've tried all the fileservers */ 8558409f67bSDavid Howells #define AFS_OPERATION_RETRY_SERVER 0x0800 /* Set if we should retry the current server */ 856b6489a49SDavid Howells #define AFS_OPERATION_DIR_CONFLICT 0x1000 /* Set if we detected a 3rd-party dir change */ 8578b2a464cSDavid Howells }; 8588b2a464cSDavid Howells 859402cb8ddSDavid Howells /* 860402cb8ddSDavid Howells * Cache auxiliary data. 861402cb8ddSDavid Howells */ 862402cb8ddSDavid Howells struct afs_vnode_cache_aux { 863402cb8ddSDavid Howells u64 data_version; 864402cb8ddSDavid Howells } __packed; 865402cb8ddSDavid Howells 866185f0c70SDavid Howells /* 867185f0c70SDavid Howells * We use page->private to hold the amount of the page that we've written to, 868185f0c70SDavid Howells * splitting the field into two parts. However, we need to represent a range 8692d9900f2SDavid Howells * 0...PAGE_SIZE, so we reduce the resolution if the size of the page 8702d9900f2SDavid Howells * exceeds what we can encode. 871185f0c70SDavid Howells */ 87265dd2d60SDavid Howells #ifdef CONFIG_64BIT 873f86726a6SDavid Howells #define __AFS_PAGE_PRIV_MASK 0x7fffffffUL 874185f0c70SDavid Howells #define __AFS_PAGE_PRIV_SHIFT 32 875f86726a6SDavid Howells #define __AFS_PAGE_PRIV_MMAPPED 0x80000000UL 876185f0c70SDavid Howells #else 877f86726a6SDavid Howells #define __AFS_PAGE_PRIV_MASK 0x7fffUL 878185f0c70SDavid Howells #define __AFS_PAGE_PRIV_SHIFT 16 879f86726a6SDavid Howells #define __AFS_PAGE_PRIV_MMAPPED 0x8000UL 880185f0c70SDavid Howells #endif 881185f0c70SDavid Howells 88267d78a6fSDavid Howells static inline unsigned int afs_page_dirty_resolution(struct page *page) 8832d9900f2SDavid Howells { 88467d78a6fSDavid Howells int shift = thp_order(page) + PAGE_SHIFT - (__AFS_PAGE_PRIV_SHIFT - 1); 8852d9900f2SDavid Howells return (shift > 0) ? shift : 0; 8862d9900f2SDavid Howells } 8872d9900f2SDavid Howells 88867d78a6fSDavid Howells static inline size_t afs_page_dirty_from(struct page *page, unsigned long priv) 889185f0c70SDavid Howells { 8902d9900f2SDavid Howells unsigned long x = priv & __AFS_PAGE_PRIV_MASK; 8912d9900f2SDavid Howells 8922d9900f2SDavid Howells /* The lower bound is inclusive */ 89367d78a6fSDavid Howells return x << afs_page_dirty_resolution(page); 894185f0c70SDavid Howells } 895185f0c70SDavid Howells 89667d78a6fSDavid Howells static inline size_t afs_page_dirty_to(struct page *page, unsigned long priv) 897185f0c70SDavid Howells { 8982d9900f2SDavid Howells unsigned long x = (priv >> __AFS_PAGE_PRIV_SHIFT) & __AFS_PAGE_PRIV_MASK; 8992d9900f2SDavid Howells 9002d9900f2SDavid Howells /* The upper bound is immediately beyond the region */ 90167d78a6fSDavid Howells return (x + 1) << afs_page_dirty_resolution(page); 902185f0c70SDavid Howells } 903185f0c70SDavid Howells 90467d78a6fSDavid Howells static inline unsigned long afs_page_dirty(struct page *page, size_t from, size_t to) 905185f0c70SDavid Howells { 90667d78a6fSDavid Howells unsigned int res = afs_page_dirty_resolution(page); 9072d9900f2SDavid Howells from >>= res; 9082d9900f2SDavid Howells to = (to - 1) >> res; 9092d9900f2SDavid Howells return (to << __AFS_PAGE_PRIV_SHIFT) | from; 910185f0c70SDavid Howells } 911185f0c70SDavid Howells 912f86726a6SDavid Howells static inline unsigned long afs_page_dirty_mmapped(unsigned long priv) 913f86726a6SDavid Howells { 914f86726a6SDavid Howells return priv | __AFS_PAGE_PRIV_MMAPPED; 915f86726a6SDavid Howells } 916f86726a6SDavid Howells 917f86726a6SDavid Howells static inline bool afs_is_page_dirty_mmapped(unsigned long priv) 918f86726a6SDavid Howells { 919f86726a6SDavid Howells return priv & __AFS_PAGE_PRIV_MMAPPED; 920f86726a6SDavid Howells } 921f86726a6SDavid Howells 92298bf40cdSDavid Howells #include <trace/events/afs.h> 92398bf40cdSDavid Howells 92408e0e7c8SDavid Howells /*****************************************************************************/ 92508e0e7c8SDavid Howells /* 9268b2a464cSDavid Howells * addr_list.c 9278b2a464cSDavid Howells */ 9288b2a464cSDavid Howells static inline struct afs_addr_list *afs_get_addrlist(struct afs_addr_list *alist) 9298b2a464cSDavid Howells { 9308b2a464cSDavid Howells if (alist) 9318b2a464cSDavid Howells refcount_inc(&alist->usage); 9328b2a464cSDavid Howells return alist; 9338b2a464cSDavid Howells } 9348b2a464cSDavid Howells extern struct afs_addr_list *afs_alloc_addrlist(unsigned int, 9358b2a464cSDavid Howells unsigned short, 9368b2a464cSDavid Howells unsigned short); 9378b2a464cSDavid Howells extern void afs_put_addrlist(struct afs_addr_list *); 9380a5143f2SDavid Howells extern struct afs_vlserver_list *afs_parse_text_addrs(struct afs_net *, 9390a5143f2SDavid Howells const char *, size_t, char, 9408b2a464cSDavid Howells unsigned short, unsigned short); 9410a5143f2SDavid Howells extern struct afs_vlserver_list *afs_dns_query(struct afs_cell *, time64_t *); 9428b2a464cSDavid Howells extern bool afs_iterate_addresses(struct afs_addr_cursor *); 9438b2a464cSDavid Howells extern int afs_end_cursor(struct afs_addr_cursor *); 9448b2a464cSDavid Howells 945bf99a53cSDavid Howells extern void afs_merge_fs_addr4(struct afs_addr_list *, __be32, u16); 946bf99a53cSDavid Howells extern void afs_merge_fs_addr6(struct afs_addr_list *, __be32 *, u16); 947d2ddc776SDavid Howells 9488b2a464cSDavid Howells /* 9499b3f26c9SDavid Howells * cache.c 9509b3f26c9SDavid Howells */ 9519b3f26c9SDavid Howells #ifdef CONFIG_AFS_FSCACHE 9529b3f26c9SDavid Howells extern struct fscache_netfs afs_cache_netfs; 9539b3f26c9SDavid Howells extern struct fscache_cookie_def afs_cell_cache_index_def; 9549b3f26c9SDavid Howells extern struct fscache_cookie_def afs_volume_cache_index_def; 9559b3f26c9SDavid Howells extern struct fscache_cookie_def afs_vnode_cache_index_def; 9569b3f26c9SDavid Howells #else 9579b3f26c9SDavid Howells #define afs_cell_cache_index_def (*(struct fscache_cookie_def *) NULL) 9589b3f26c9SDavid Howells #define afs_volume_cache_index_def (*(struct fscache_cookie_def *) NULL) 9599b3f26c9SDavid Howells #define afs_vnode_cache_index_def (*(struct fscache_cookie_def *) NULL) 9609b3f26c9SDavid Howells #endif 9619b3f26c9SDavid Howells 9629b3f26c9SDavid Howells /* 96308e0e7c8SDavid Howells * callback.c 96408e0e7c8SDavid Howells */ 96508e0e7c8SDavid Howells extern void afs_init_callback_state(struct afs_server *); 966051d2525SDavid Howells extern void __afs_break_callback(struct afs_vnode *, enum afs_cb_break_reason); 967051d2525SDavid Howells extern void afs_break_callback(struct afs_vnode *, enum afs_cb_break_reason); 9685cf9dd55SDavid Howells extern void afs_break_callbacks(struct afs_server *, size_t, struct afs_callback_break *); 969c435ee34SDavid Howells 97068251f0aSDavid Howells static inline unsigned int afs_calc_vnode_cb_break(struct afs_vnode *vnode) 97168251f0aSDavid Howells { 972eeba1e9cSDavid Howells return vnode->cb_break + vnode->cb_v_break; 97368251f0aSDavid Howells } 97468251f0aSDavid Howells 97518ac6185SDavid Howells static inline bool afs_cb_is_broken(unsigned int cb_break, 97620325960SDavid Howells const struct afs_vnode *vnode) 97768251f0aSDavid Howells { 97820325960SDavid Howells return cb_break != (vnode->cb_break + vnode->volume->cb_v_break); 97968251f0aSDavid Howells } 98068251f0aSDavid Howells 9811da177e4SLinus Torvalds /* 9821da177e4SLinus Torvalds * cell.c 9831da177e4SLinus Torvalds */ 984989782dcSDavid Howells extern int afs_cell_init(struct afs_net *, const char *); 985dca54a7bSDavid Howells extern struct afs_cell *afs_find_cell(struct afs_net *, const char *, unsigned, 986dca54a7bSDavid Howells enum afs_cell_trace); 987989782dcSDavid Howells extern struct afs_cell *afs_lookup_cell(struct afs_net *, const char *, unsigned, 988989782dcSDavid Howells const char *, bool); 989dca54a7bSDavid Howells extern struct afs_cell *afs_use_cell(struct afs_cell *, enum afs_cell_trace); 990dca54a7bSDavid Howells extern void afs_unuse_cell(struct afs_net *, struct afs_cell *, enum afs_cell_trace); 991dca54a7bSDavid Howells extern struct afs_cell *afs_get_cell(struct afs_cell *, enum afs_cell_trace); 992dca54a7bSDavid Howells extern void afs_see_cell(struct afs_cell *, enum afs_cell_trace); 993dca54a7bSDavid Howells extern void afs_put_cell(struct afs_cell *, enum afs_cell_trace); 994dca54a7bSDavid Howells extern void afs_queue_cell(struct afs_cell *, enum afs_cell_trace); 995989782dcSDavid Howells extern void afs_manage_cells(struct work_struct *); 996989782dcSDavid Howells extern void afs_cells_timer(struct timer_list *); 997f044c884SDavid Howells extern void __net_exit afs_cell_purge(struct afs_net *); 99808e0e7c8SDavid Howells 99908e0e7c8SDavid Howells /* 100008e0e7c8SDavid Howells * cmservice.c 100108e0e7c8SDavid Howells */ 100208e0e7c8SDavid Howells extern bool afs_cm_incoming_call(struct afs_call *); 100308e0e7c8SDavid Howells 10041da177e4SLinus Torvalds /* 10051da177e4SLinus Torvalds * dir.c 10061da177e4SLinus Torvalds */ 10074b6f5d20SArjan van de Ven extern const struct file_operations afs_dir_file_operations; 10084d673da1SDavid Howells extern const struct inode_operations afs_dir_inode_operations; 1009f3ddee8dSDavid Howells extern const struct address_space_operations afs_dir_aops; 10104d673da1SDavid Howells extern const struct dentry_operations afs_fs_dentry_operations; 10114d673da1SDavid Howells 101266c7e1d3SDavid Howells extern void afs_d_release(struct dentry *); 1013728279a5SDavid Howells extern void afs_check_for_remote_deletion(struct afs_operation *); 101466c7e1d3SDavid Howells 101566c7e1d3SDavid Howells /* 101663a4681fSDavid Howells * dir_edit.c 101763a4681fSDavid Howells */ 101863a4681fSDavid Howells extern void afs_edit_dir_add(struct afs_vnode *, struct qstr *, struct afs_fid *, 101963a4681fSDavid Howells enum afs_edit_dir_reason); 102063a4681fSDavid Howells extern void afs_edit_dir_remove(struct afs_vnode *, struct qstr *, enum afs_edit_dir_reason); 102163a4681fSDavid Howells 102263a4681fSDavid Howells /* 102379ddbfa5SDavid Howells * dir_silly.c 102479ddbfa5SDavid Howells */ 102579ddbfa5SDavid Howells extern int afs_sillyrename(struct afs_vnode *, struct afs_vnode *, 102679ddbfa5SDavid Howells struct dentry *, struct key *); 102779ddbfa5SDavid Howells extern int afs_silly_iput(struct dentry *, struct inode *); 102879ddbfa5SDavid Howells 102979ddbfa5SDavid Howells /* 103066c7e1d3SDavid Howells * dynroot.c 103166c7e1d3SDavid Howells */ 103266c7e1d3SDavid Howells extern const struct inode_operations afs_dynroot_inode_operations; 103366c7e1d3SDavid Howells extern const struct dentry_operations afs_dynroot_dentry_operations; 103466c7e1d3SDavid Howells 103566c7e1d3SDavid Howells extern struct inode *afs_try_auto_mntpt(struct dentry *, struct inode *); 10360da0b7fdSDavid Howells extern int afs_dynroot_mkdir(struct afs_net *, struct afs_cell *); 10370da0b7fdSDavid Howells extern void afs_dynroot_rmdir(struct afs_net *, struct afs_cell *); 10380da0b7fdSDavid Howells extern int afs_dynroot_populate(struct super_block *); 10390da0b7fdSDavid Howells extern void afs_dynroot_depopulate(struct super_block *); 10401da177e4SLinus Torvalds 10411da177e4SLinus Torvalds /* 10421da177e4SLinus Torvalds * file.c 10431da177e4SLinus Torvalds */ 1044f5e54d6eSChristoph Hellwig extern const struct address_space_operations afs_fs_aops; 1045754661f1SArjan van de Ven extern const struct inode_operations afs_file_inode_operations; 104600d3b7a4SDavid Howells extern const struct file_operations afs_file_operations; 104700d3b7a4SDavid Howells 10484343d008SDavid Howells extern int afs_cache_wb_key(struct afs_vnode *, struct afs_file *); 10494343d008SDavid Howells extern void afs_put_wb_key(struct afs_wb_key *); 105000d3b7a4SDavid Howells extern int afs_open(struct inode *, struct file *); 105100d3b7a4SDavid Howells extern int afs_release(struct inode *, struct file *); 1052c69bf479SDavid Howells extern int afs_fetch_data(struct afs_vnode *, struct afs_read *); 1053196ee9cdSDavid Howells extern void afs_put_read(struct afs_read *); 10541da177e4SLinus Torvalds 1055d4438a25SDavid Howells static inline struct afs_read *afs_get_read(struct afs_read *req) 1056d4438a25SDavid Howells { 1057d4438a25SDavid Howells refcount_inc(&req->usage); 1058d4438a25SDavid Howells return req; 1059d4438a25SDavid Howells } 1060d4438a25SDavid Howells 10611da177e4SLinus Torvalds /* 1062e8d6c554SDavid Howells * flock.c 1063e8d6c554SDavid Howells */ 1064f044c884SDavid Howells extern struct workqueue_struct *afs_lock_manager; 1065f044c884SDavid Howells 1066a690f60aSDavid Howells extern void afs_lock_op_done(struct afs_call *); 1067e8d6c554SDavid Howells extern void afs_lock_work(struct work_struct *); 1068e8d6c554SDavid Howells extern void afs_lock_may_be_available(struct afs_vnode *); 1069e8d6c554SDavid Howells extern int afs_lock(struct file *, int, struct file_lock *); 1070e8d6c554SDavid Howells extern int afs_flock(struct file *, int, struct file_lock *); 1071e8d6c554SDavid Howells 1072e8d6c554SDavid Howells /* 107308e0e7c8SDavid Howells * fsclient.c 107408e0e7c8SDavid Howells */ 1075e49c7b2fSDavid Howells extern void afs_fs_fetch_status(struct afs_operation *); 1076e49c7b2fSDavid Howells extern void afs_fs_fetch_data(struct afs_operation *); 1077e49c7b2fSDavid Howells extern void afs_fs_create_file(struct afs_operation *); 1078e49c7b2fSDavid Howells extern void afs_fs_make_dir(struct afs_operation *); 1079e49c7b2fSDavid Howells extern void afs_fs_remove_file(struct afs_operation *); 1080e49c7b2fSDavid Howells extern void afs_fs_remove_dir(struct afs_operation *); 1081e49c7b2fSDavid Howells extern void afs_fs_link(struct afs_operation *); 1082e49c7b2fSDavid Howells extern void afs_fs_symlink(struct afs_operation *); 1083e49c7b2fSDavid Howells extern void afs_fs_rename(struct afs_operation *); 1084e49c7b2fSDavid Howells extern void afs_fs_store_data(struct afs_operation *); 1085e49c7b2fSDavid Howells extern void afs_fs_setattr(struct afs_operation *); 1086e49c7b2fSDavid Howells extern void afs_fs_get_volume_status(struct afs_operation *); 1087e49c7b2fSDavid Howells extern void afs_fs_set_lock(struct afs_operation *); 1088e49c7b2fSDavid Howells extern void afs_fs_extend_lock(struct afs_operation *); 1089e49c7b2fSDavid Howells extern void afs_fs_release_lock(struct afs_operation *); 1090d2ddc776SDavid Howells extern int afs_fs_give_up_all_callbacks(struct afs_net *, struct afs_server *, 1091d2ddc776SDavid Howells struct afs_addr_cursor *, struct key *); 1092f6cbb368SDavid Howells extern bool afs_fs_get_capabilities(struct afs_net *, struct afs_server *, 1093f6cbb368SDavid Howells struct afs_addr_cursor *, struct key *); 1094e49c7b2fSDavid Howells extern void afs_fs_inline_bulk_status(struct afs_operation *); 109508e0e7c8SDavid Howells 1096260f082bSDavid Howells struct afs_acl { 1097260f082bSDavid Howells u32 size; 1098260f082bSDavid Howells u8 data[]; 1099260f082bSDavid Howells }; 1100260f082bSDavid Howells 1101e49c7b2fSDavid Howells extern void afs_fs_fetch_acl(struct afs_operation *); 1102e49c7b2fSDavid Howells extern void afs_fs_store_acl(struct afs_operation *); 1103e49c7b2fSDavid Howells 1104e49c7b2fSDavid Howells /* 1105e49c7b2fSDavid Howells * fs_operation.c 1106e49c7b2fSDavid Howells */ 1107e49c7b2fSDavid Howells extern struct afs_operation *afs_alloc_operation(struct key *, struct afs_volume *); 1108e49c7b2fSDavid Howells extern int afs_put_operation(struct afs_operation *); 1109e49c7b2fSDavid Howells extern bool afs_begin_vnode_operation(struct afs_operation *); 1110e49c7b2fSDavid Howells extern void afs_wait_for_operation(struct afs_operation *); 1111e49c7b2fSDavid Howells extern int afs_do_sync_operation(struct afs_operation *); 1112e49c7b2fSDavid Howells 1113e49c7b2fSDavid Howells static inline void afs_op_nomem(struct afs_operation *op) 1114e49c7b2fSDavid Howells { 1115e49c7b2fSDavid Howells op->error = -ENOMEM; 1116e49c7b2fSDavid Howells } 1117e49c7b2fSDavid Howells 1118e49c7b2fSDavid Howells static inline void afs_op_set_vnode(struct afs_operation *op, unsigned int n, 1119e49c7b2fSDavid Howells struct afs_vnode *vnode) 1120e49c7b2fSDavid Howells { 1121e49c7b2fSDavid Howells op->file[n].vnode = vnode; 1122e49c7b2fSDavid Howells op->file[n].need_io_lock = true; 1123e49c7b2fSDavid Howells } 1124e49c7b2fSDavid Howells 1125e49c7b2fSDavid Howells static inline void afs_op_set_fid(struct afs_operation *op, unsigned int n, 1126e49c7b2fSDavid Howells const struct afs_fid *fid) 1127e49c7b2fSDavid Howells { 1128e49c7b2fSDavid Howells op->file[n].fid = *fid; 1129e49c7b2fSDavid Howells } 1130260f082bSDavid Howells 113108e0e7c8SDavid Howells /* 11323bf0fb6fSDavid Howells * fs_probe.c 11333bf0fb6fSDavid Howells */ 11343bf0fb6fSDavid Howells extern void afs_fileserver_probe_result(struct afs_call *); 1135f6cbb368SDavid Howells extern void afs_fs_probe_fileserver(struct afs_net *, struct afs_server *, struct key *, bool); 11363bf0fb6fSDavid Howells extern int afs_wait_for_fs_probes(struct afs_server_list *, unsigned long); 11378409f67bSDavid Howells extern void afs_probe_fileserver(struct afs_net *, struct afs_server *); 1138f6cbb368SDavid Howells extern void afs_fs_probe_dispatcher(struct work_struct *); 11398409f67bSDavid Howells extern int afs_wait_for_one_fs_probe(struct afs_server *, bool); 11405481fc6eSDavid Howells extern void afs_fs_probe_cleanup(struct afs_net *); 11413bf0fb6fSDavid Howells 11423bf0fb6fSDavid Howells /* 11431da177e4SLinus Torvalds * inode.c 11441da177e4SLinus Torvalds */ 1145b6489a49SDavid Howells extern const struct afs_operation_ops afs_fetch_status_operation; 1146b6489a49SDavid Howells 1147e49c7b2fSDavid Howells extern void afs_vnode_commit_status(struct afs_operation *, struct afs_vnode_param *); 1148a58823acSDavid Howells extern int afs_fetch_status(struct afs_vnode *, struct key *, bool, afs_access_t *); 1149e49c7b2fSDavid Howells extern int afs_ilookup5_test_by_fid(struct inode *, void *); 11504d673da1SDavid Howells extern struct inode *afs_iget_pseudo_dir(struct super_block *, bool); 1151e49c7b2fSDavid Howells extern struct inode *afs_iget(struct afs_operation *, struct afs_vnode_param *); 1152e49c7b2fSDavid Howells extern struct inode *afs_root_iget(struct super_block *, struct key *); 1153c925bd0aSDavid Howells extern bool afs_check_validity(struct afs_vnode *); 1154260a9803SDavid Howells extern int afs_validate(struct afs_vnode *, struct key *); 1155549c7297SChristian Brauner extern int afs_getattr(struct user_namespace *mnt_userns, const struct path *, 1156549c7297SChristian Brauner struct kstat *, u32, unsigned int); 1157549c7297SChristian Brauner extern int afs_setattr(struct user_namespace *mnt_userns, struct dentry *, struct iattr *); 1158b57922d9SAl Viro extern void afs_evict_inode(struct inode *); 1159bec5eb61Swanglei extern int afs_drop_inode(struct inode *); 11601da177e4SLinus Torvalds 11611da177e4SLinus Torvalds /* 11621da177e4SLinus Torvalds * main.c 11631da177e4SLinus Torvalds */ 11640ad53eeeSTejun Heo extern struct workqueue_struct *afs_wq; 11655b86d4ffSDavid Howells extern int afs_net_id; 11665b86d4ffSDavid Howells 11675b86d4ffSDavid Howells static inline struct afs_net *afs_net(struct net *net) 11685b86d4ffSDavid Howells { 11695b86d4ffSDavid Howells return net_generic(net, afs_net_id); 11705b86d4ffSDavid Howells } 11715b86d4ffSDavid Howells 11725b86d4ffSDavid Howells static inline struct afs_net *afs_sb2net(struct super_block *sb) 11735b86d4ffSDavid Howells { 11745b86d4ffSDavid Howells return afs_net(AFS_FS_S(sb)->net_ns); 11755b86d4ffSDavid Howells } 1176f044c884SDavid Howells 1177f044c884SDavid Howells static inline struct afs_net *afs_d2net(struct dentry *dentry) 1178f044c884SDavid Howells { 11795b86d4ffSDavid Howells return afs_sb2net(dentry->d_sb); 1180f044c884SDavid Howells } 1181f044c884SDavid Howells 1182f044c884SDavid Howells static inline struct afs_net *afs_i2net(struct inode *inode) 1183f044c884SDavid Howells { 11845b86d4ffSDavid Howells return afs_sb2net(inode->i_sb); 1185f044c884SDavid Howells } 1186f044c884SDavid Howells 1187f044c884SDavid Howells static inline struct afs_net *afs_v2net(struct afs_vnode *vnode) 1188f044c884SDavid Howells { 11895b86d4ffSDavid Howells return afs_i2net(&vnode->vfs_inode); 1190f044c884SDavid Howells } 1191f044c884SDavid Howells 1192f044c884SDavid Howells static inline struct afs_net *afs_sock2net(struct sock *sk) 1193f044c884SDavid Howells { 11945b86d4ffSDavid Howells return net_generic(sock_net(sk), afs_net_id); 1195f044c884SDavid Howells } 11961da177e4SLinus Torvalds 1197d55b4da4SDavid Howells static inline void __afs_stat(atomic_t *s) 1198d55b4da4SDavid Howells { 1199d55b4da4SDavid Howells atomic_inc(s); 1200d55b4da4SDavid Howells } 1201d55b4da4SDavid Howells 1202d55b4da4SDavid Howells #define afs_stat_v(vnode, n) __afs_stat(&afs_v2net(vnode)->n) 1203d55b4da4SDavid Howells 12041da177e4SLinus Torvalds /* 120508e0e7c8SDavid Howells * misc.c 120608e0e7c8SDavid Howells */ 120708e0e7c8SDavid Howells extern int afs_abort_to_error(u32); 12084584ae96SDavid Howells extern void afs_prioritise_error(struct afs_error *, int, u32); 120908e0e7c8SDavid Howells 121008e0e7c8SDavid Howells /* 12111da177e4SLinus Torvalds * mntpt.c 12121da177e4SLinus Torvalds */ 1213754661f1SArjan van de Ven extern const struct inode_operations afs_mntpt_inode_operations; 1214bec5eb61Swanglei extern const struct inode_operations afs_autocell_inode_operations; 12154b6f5d20SArjan van de Ven extern const struct file_operations afs_mntpt_file_operations; 12161da177e4SLinus Torvalds 1217d18610b0SDavid Howells extern struct vfsmount *afs_d_automount(struct path *); 121808e0e7c8SDavid Howells extern void afs_mntpt_kill_timer(void); 12191da177e4SLinus Torvalds 12201da177e4SLinus Torvalds /* 12211da177e4SLinus Torvalds * proc.c 12221da177e4SLinus Torvalds */ 1223b6cfbecaSDavid Howells #ifdef CONFIG_PROC_FS 1224f044c884SDavid Howells extern int __net_init afs_proc_init(struct afs_net *); 1225f044c884SDavid Howells extern void __net_exit afs_proc_cleanup(struct afs_net *); 12265b86d4ffSDavid Howells extern int afs_proc_cell_setup(struct afs_cell *); 12275b86d4ffSDavid Howells extern void afs_proc_cell_remove(struct afs_cell *); 12286f8880d8SDavid Howells extern void afs_put_sysnames(struct afs_sysnames *); 1229b6cfbecaSDavid Howells #else 1230b6cfbecaSDavid Howells static inline int afs_proc_init(struct afs_net *net) { return 0; } 1231b6cfbecaSDavid Howells static inline void afs_proc_cleanup(struct afs_net *net) {} 1232b6cfbecaSDavid Howells static inline int afs_proc_cell_setup(struct afs_cell *cell) { return 0; } 1233b6cfbecaSDavid Howells static inline void afs_proc_cell_remove(struct afs_cell *cell) {} 1234b6cfbecaSDavid Howells static inline void afs_put_sysnames(struct afs_sysnames *sysnames) {} 1235b6cfbecaSDavid Howells #endif 12361da177e4SLinus Torvalds 123708e0e7c8SDavid Howells /* 1238d2ddc776SDavid Howells * rotate.c 1239d2ddc776SDavid Howells */ 1240a310082fSDavid Howells extern bool afs_select_fileserver(struct afs_operation *); 1241e49c7b2fSDavid Howells extern void afs_dump_edestaddrreq(const struct afs_operation *); 1242d2ddc776SDavid Howells 1243d2ddc776SDavid Howells /* 124408e0e7c8SDavid Howells * rxrpc.c 124508e0e7c8SDavid Howells */ 1246f044c884SDavid Howells extern struct workqueue_struct *afs_async_calls; 12478324f0bcSDavid Howells 1248f044c884SDavid Howells extern int __net_init afs_open_socket(struct afs_net *); 1249f044c884SDavid Howells extern void __net_exit afs_close_socket(struct afs_net *); 1250f044c884SDavid Howells extern void afs_charge_preallocation(struct work_struct *); 1251341f741fSDavid Howells extern void afs_put_call(struct afs_call *); 12520b9bf381SDavid Howells extern void afs_make_call(struct afs_addr_cursor *, struct afs_call *, gfp_t); 12530b9bf381SDavid Howells extern long afs_wait_for_call_to_complete(struct afs_call *, struct afs_addr_cursor *); 1254f044c884SDavid Howells extern struct afs_call *afs_alloc_flat_call(struct afs_net *, 1255f044c884SDavid Howells const struct afs_call_type *, 125608e0e7c8SDavid Howells size_t, size_t); 125708e0e7c8SDavid Howells extern void afs_flat_call_destructor(struct afs_call *); 125808e0e7c8SDavid Howells extern void afs_send_empty_reply(struct afs_call *); 1259b908fe6bSDavid Howells extern void afs_send_simple_reply(struct afs_call *, const void *, size_t); 126012bdcf33SDavid Howells extern int afs_extract_data(struct afs_call *, bool); 12617126ead9SDavid Howells extern int afs_protocol_error(struct afs_call *, enum afs_eproto_cause); 126208e0e7c8SDavid Howells 1263e49c7b2fSDavid Howells static inline void afs_make_op_call(struct afs_operation *op, struct afs_call *call, 1264e49c7b2fSDavid Howells gfp_t gfp) 126520b8391fSDavid Howells { 1266e49c7b2fSDavid Howells op->call = call; 1267a310082fSDavid Howells op->type = call->type; 1268e49c7b2fSDavid Howells call->op = op; 1269e49c7b2fSDavid Howells call->key = op->key; 1270e49c7b2fSDavid Howells call->intr = !(op->flags & AFS_OPERATION_UNINTR); 1271e49c7b2fSDavid Howells afs_make_call(&op->ac, call, gfp); 127220b8391fSDavid Howells } 127320b8391fSDavid Howells 127412bdcf33SDavid Howells static inline void afs_extract_begin(struct afs_call *call, void *buf, size_t size) 127512bdcf33SDavid Howells { 1276f105da1aSDavid Howells call->iov_len = size; 127712bdcf33SDavid Howells call->kvec[0].iov_base = buf; 127812bdcf33SDavid Howells call->kvec[0].iov_len = size; 1279fc276122SDavid Howells iov_iter_kvec(&call->def_iter, READ, call->kvec, 1, size); 128012bdcf33SDavid Howells } 128112bdcf33SDavid Howells 128212bdcf33SDavid Howells static inline void afs_extract_to_tmp(struct afs_call *call) 128312bdcf33SDavid Howells { 1284f105da1aSDavid Howells call->iov_len = sizeof(call->tmp); 128512bdcf33SDavid Howells afs_extract_begin(call, &call->tmp, sizeof(call->tmp)); 128612bdcf33SDavid Howells } 128712bdcf33SDavid Howells 128812bdcf33SDavid Howells static inline void afs_extract_to_tmp64(struct afs_call *call) 128912bdcf33SDavid Howells { 1290f105da1aSDavid Howells call->iov_len = sizeof(call->tmp64); 129112bdcf33SDavid Howells afs_extract_begin(call, &call->tmp64, sizeof(call->tmp64)); 129212bdcf33SDavid Howells } 129312bdcf33SDavid Howells 129412bdcf33SDavid Howells static inline void afs_extract_discard(struct afs_call *call, size_t size) 129512bdcf33SDavid Howells { 1296f105da1aSDavid Howells call->iov_len = size; 1297fc276122SDavid Howells iov_iter_discard(&call->def_iter, READ, size); 129812bdcf33SDavid Howells } 129912bdcf33SDavid Howells 130012bdcf33SDavid Howells static inline void afs_extract_to_buf(struct afs_call *call, size_t size) 130112bdcf33SDavid Howells { 1302f105da1aSDavid Howells call->iov_len = size; 130312bdcf33SDavid Howells afs_extract_begin(call, call->buffer, size); 130412bdcf33SDavid Howells } 130512bdcf33SDavid Howells 1306d001648eSDavid Howells static inline int afs_transfer_reply(struct afs_call *call) 1307372ee163SDavid Howells { 130812bdcf33SDavid Howells return afs_extract_data(call, false); 1309372ee163SDavid Howells } 1310372ee163SDavid Howells 131198bf40cdSDavid Howells static inline bool afs_check_call_state(struct afs_call *call, 131298bf40cdSDavid Howells enum afs_call_state state) 131398bf40cdSDavid Howells { 131498bf40cdSDavid Howells return READ_ONCE(call->state) == state; 131598bf40cdSDavid Howells } 131698bf40cdSDavid Howells 131798bf40cdSDavid Howells static inline bool afs_set_call_state(struct afs_call *call, 131898bf40cdSDavid Howells enum afs_call_state from, 131998bf40cdSDavid Howells enum afs_call_state to) 132098bf40cdSDavid Howells { 132198bf40cdSDavid Howells bool ok = false; 132298bf40cdSDavid Howells 132398bf40cdSDavid Howells spin_lock_bh(&call->state_lock); 132498bf40cdSDavid Howells if (call->state == from) { 132598bf40cdSDavid Howells call->state = to; 132698bf40cdSDavid Howells trace_afs_call_state(call, from, to, 0, 0); 132798bf40cdSDavid Howells ok = true; 132898bf40cdSDavid Howells } 132998bf40cdSDavid Howells spin_unlock_bh(&call->state_lock); 133098bf40cdSDavid Howells return ok; 133198bf40cdSDavid Howells } 133298bf40cdSDavid Howells 133398bf40cdSDavid Howells static inline void afs_set_call_complete(struct afs_call *call, 133498bf40cdSDavid Howells int error, u32 remote_abort) 133598bf40cdSDavid Howells { 133698bf40cdSDavid Howells enum afs_call_state state; 133798bf40cdSDavid Howells bool ok = false; 133898bf40cdSDavid Howells 133998bf40cdSDavid Howells spin_lock_bh(&call->state_lock); 134098bf40cdSDavid Howells state = call->state; 134198bf40cdSDavid Howells if (state != AFS_CALL_COMPLETE) { 134298bf40cdSDavid Howells call->abort_code = remote_abort; 134398bf40cdSDavid Howells call->error = error; 134498bf40cdSDavid Howells call->state = AFS_CALL_COMPLETE; 134598bf40cdSDavid Howells trace_afs_call_state(call, state, AFS_CALL_COMPLETE, 134698bf40cdSDavid Howells error, remote_abort); 134798bf40cdSDavid Howells ok = true; 134898bf40cdSDavid Howells } 134998bf40cdSDavid Howells spin_unlock_bh(&call->state_lock); 1350dde9f095SDavid Howells if (ok) { 135198bf40cdSDavid Howells trace_afs_call_done(call); 1352dde9f095SDavid Howells 1353dde9f095SDavid Howells /* Asynchronous calls have two refs to release - one from the alloc and 1354dde9f095SDavid Howells * one queued with the work item - and we can't just deallocate the 1355dde9f095SDavid Howells * call because the work item may be queued again. 1356dde9f095SDavid Howells */ 1357dde9f095SDavid Howells if (call->drop_ref) 1358dde9f095SDavid Howells afs_put_call(call); 1359dde9f095SDavid Howells } 136098bf40cdSDavid Howells } 136198bf40cdSDavid Howells 136208e0e7c8SDavid Howells /* 136300d3b7a4SDavid Howells * security.c 136400d3b7a4SDavid Howells */ 1365be080a6fSDavid Howells extern void afs_put_permits(struct afs_permits *); 136600d3b7a4SDavid Howells extern void afs_clear_permits(struct afs_vnode *); 1367a58823acSDavid Howells extern void afs_cache_permit(struct afs_vnode *, struct key *, unsigned int, 1368a58823acSDavid Howells struct afs_status_cb *); 1369416351f2SDavid Howells extern void afs_zap_permits(struct rcu_head *); 137000d3b7a4SDavid Howells extern struct key *afs_request_key(struct afs_cell *); 13718b6a666aSDavid Howells extern struct key *afs_request_key_rcu(struct afs_cell *); 13720fafdc9fSDavid Howells extern int afs_check_permit(struct afs_vnode *, struct key *, afs_access_t *); 1373549c7297SChristian Brauner extern int afs_permission(struct user_namespace *, struct inode *, int); 1374be080a6fSDavid Howells extern void __exit afs_clean_up_permit_cache(void); 137500d3b7a4SDavid Howells 137600d3b7a4SDavid Howells /* 137708e0e7c8SDavid Howells * server.c 137808e0e7c8SDavid Howells */ 137908e0e7c8SDavid Howells extern spinlock_t afs_server_peer_lock; 138008e0e7c8SDavid Howells 1381f044c884SDavid Howells extern struct afs_server *afs_find_server(struct afs_net *, 1382f044c884SDavid Howells const struct sockaddr_rxrpc *); 1383d2ddc776SDavid Howells extern struct afs_server *afs_find_server_by_uuid(struct afs_net *, const uuid_t *); 138481006805SDavid Howells extern struct afs_server *afs_lookup_server(struct afs_cell *, struct key *, const uuid_t *, u32); 138545218193SDavid Howells extern struct afs_server *afs_get_server(struct afs_server *, enum afs_server_trace); 1386977e5f8eSDavid Howells extern struct afs_server *afs_use_server(struct afs_server *, enum afs_server_trace); 1387977e5f8eSDavid Howells extern void afs_unuse_server(struct afs_net *, struct afs_server *, enum afs_server_trace); 1388977e5f8eSDavid Howells extern void afs_unuse_server_notime(struct afs_net *, struct afs_server *, enum afs_server_trace); 138945218193SDavid Howells extern void afs_put_server(struct afs_net *, struct afs_server *, enum afs_server_trace); 1390d2ddc776SDavid Howells extern void afs_manage_servers(struct work_struct *); 1391d2ddc776SDavid Howells extern void afs_servers_timer(struct timer_list *); 1392f6cbb368SDavid Howells extern void afs_fs_probe_timer(struct timer_list *); 1393f044c884SDavid Howells extern void __net_exit afs_purge_servers(struct afs_net *); 1394a310082fSDavid Howells extern bool afs_check_server_record(struct afs_operation *, struct afs_server *); 1395d2ddc776SDavid Howells 1396f6cbb368SDavid Howells static inline void afs_inc_servers_outstanding(struct afs_net *net) 1397f6cbb368SDavid Howells { 1398f6cbb368SDavid Howells atomic_inc(&net->servers_outstanding); 1399f6cbb368SDavid Howells } 1400f6cbb368SDavid Howells 1401f6cbb368SDavid Howells static inline void afs_dec_servers_outstanding(struct afs_net *net) 1402f6cbb368SDavid Howells { 1403f6cbb368SDavid Howells if (atomic_dec_and_test(&net->servers_outstanding)) 1404f6cbb368SDavid Howells wake_up_var(&net->servers_outstanding); 1405f6cbb368SDavid Howells } 1406f6cbb368SDavid Howells 1407f6cbb368SDavid Howells static inline bool afs_is_probing_server(struct afs_server *server) 1408f6cbb368SDavid Howells { 1409f6cbb368SDavid Howells return list_empty(&server->probe_link); 1410f6cbb368SDavid Howells } 1411f6cbb368SDavid Howells 1412d2ddc776SDavid Howells /* 1413d2ddc776SDavid Howells * server_list.c 1414d2ddc776SDavid Howells */ 1415d2ddc776SDavid Howells static inline struct afs_server_list *afs_get_serverlist(struct afs_server_list *slist) 1416d2ddc776SDavid Howells { 1417d2ddc776SDavid Howells refcount_inc(&slist->usage); 1418d2ddc776SDavid Howells return slist; 1419d2ddc776SDavid Howells } 1420d2ddc776SDavid Howells 1421d2ddc776SDavid Howells extern void afs_put_serverlist(struct afs_net *, struct afs_server_list *); 1422d2ddc776SDavid Howells extern struct afs_server_list *afs_alloc_server_list(struct afs_cell *, struct key *, 1423d2ddc776SDavid Howells struct afs_vldb_entry *, 1424d2ddc776SDavid Howells u8); 1425d2ddc776SDavid Howells extern bool afs_annotate_server_list(struct afs_server_list *, struct afs_server_list *); 142608e0e7c8SDavid Howells 142708e0e7c8SDavid Howells /* 142800d3b7a4SDavid Howells * super.c 142900d3b7a4SDavid Howells */ 1430f044c884SDavid Howells extern int __init afs_fs_init(void); 14315b86d4ffSDavid Howells extern void afs_fs_exit(void); 143200d3b7a4SDavid Howells 143300d3b7a4SDavid Howells /* 143408e0e7c8SDavid Howells * vlclient.c 143508e0e7c8SDavid Howells */ 14360a5143f2SDavid Howells extern struct afs_vldb_entry *afs_vl_get_entry_by_name_u(struct afs_vl_cursor *, 14370a5143f2SDavid Howells const char *, int); 14380a5143f2SDavid Howells extern struct afs_addr_list *afs_vl_get_addrs_u(struct afs_vl_cursor *, const uuid_t *); 14390b9bf381SDavid Howells extern struct afs_call *afs_vl_get_capabilities(struct afs_net *, struct afs_addr_cursor *, 14400b9bf381SDavid Howells struct key *, struct afs_vlserver *, unsigned int); 14410a5143f2SDavid Howells extern struct afs_addr_list *afs_yfsvl_get_endpoints(struct afs_vl_cursor *, const uuid_t *); 1442c3e9f888SDavid Howells extern char *afs_yfsvl_get_cell_name(struct afs_vl_cursor *); 14430a5143f2SDavid Howells 14440a5143f2SDavid Howells /* 14458a070a96SDavid Howells * vl_alias.c 14468a070a96SDavid Howells */ 14478a070a96SDavid Howells extern int afs_cell_detect_alias(struct afs_cell *, struct key *); 14488a070a96SDavid Howells 14498a070a96SDavid Howells /* 14503bf0fb6fSDavid Howells * vl_probe.c 14513bf0fb6fSDavid Howells */ 14523bf0fb6fSDavid Howells extern void afs_vlserver_probe_result(struct afs_call *); 14533bf0fb6fSDavid Howells extern int afs_send_vl_probes(struct afs_net *, struct key *, struct afs_vlserver_list *); 14543bf0fb6fSDavid Howells extern int afs_wait_for_vl_probes(struct afs_vlserver_list *, unsigned long); 14553bf0fb6fSDavid Howells 14563bf0fb6fSDavid Howells /* 14570a5143f2SDavid Howells * vl_rotate.c 14580a5143f2SDavid Howells */ 14590a5143f2SDavid Howells extern bool afs_begin_vlserver_operation(struct afs_vl_cursor *, 14600a5143f2SDavid Howells struct afs_cell *, struct key *); 14610a5143f2SDavid Howells extern bool afs_select_vlserver(struct afs_vl_cursor *); 14620a5143f2SDavid Howells extern bool afs_select_current_vlserver(struct afs_vl_cursor *); 14630a5143f2SDavid Howells extern int afs_end_vlserver_operation(struct afs_vl_cursor *); 14640a5143f2SDavid Howells 14650a5143f2SDavid Howells /* 14660a5143f2SDavid Howells * vlserver_list.c 14670a5143f2SDavid Howells */ 14680a5143f2SDavid Howells static inline struct afs_vlserver *afs_get_vlserver(struct afs_vlserver *vlserver) 14690a5143f2SDavid Howells { 14700a5143f2SDavid Howells atomic_inc(&vlserver->usage); 14710a5143f2SDavid Howells return vlserver; 14720a5143f2SDavid Howells } 14730a5143f2SDavid Howells 14740a5143f2SDavid Howells static inline struct afs_vlserver_list *afs_get_vlserverlist(struct afs_vlserver_list *vllist) 14750a5143f2SDavid Howells { 14760a5143f2SDavid Howells if (vllist) 14770a5143f2SDavid Howells atomic_inc(&vllist->usage); 14780a5143f2SDavid Howells return vllist; 14790a5143f2SDavid Howells } 14800a5143f2SDavid Howells 14810a5143f2SDavid Howells extern struct afs_vlserver *afs_alloc_vlserver(const char *, size_t, unsigned short); 14820a5143f2SDavid Howells extern void afs_put_vlserver(struct afs_net *, struct afs_vlserver *); 14830a5143f2SDavid Howells extern struct afs_vlserver_list *afs_alloc_vlserver_list(unsigned int); 14840a5143f2SDavid Howells extern void afs_put_vlserverlist(struct afs_net *, struct afs_vlserver_list *); 14850a5143f2SDavid Howells extern struct afs_vlserver_list *afs_extract_vlserver_list(struct afs_cell *, 14860a5143f2SDavid Howells const void *, size_t); 148708e0e7c8SDavid Howells 148808e0e7c8SDavid Howells /* 148908e0e7c8SDavid Howells * volume.c 149008e0e7c8SDavid Howells */ 149113fcc683SDavid Howells extern struct afs_volume *afs_create_volume(struct afs_fs_context *); 1492d2ddc776SDavid Howells extern void afs_activate_volume(struct afs_volume *); 1493d2ddc776SDavid Howells extern void afs_deactivate_volume(struct afs_volume *); 1494cca37d45SDavid Howells extern struct afs_volume *afs_get_volume(struct afs_volume *, enum afs_volume_trace); 1495cca37d45SDavid Howells extern void afs_put_volume(struct afs_net *, struct afs_volume *, enum afs_volume_trace); 1496a310082fSDavid Howells extern int afs_check_volume_status(struct afs_volume *, struct afs_operation *); 149708e0e7c8SDavid Howells 149831143d5dSDavid Howells /* 149931143d5dSDavid Howells * write.c 150031143d5dSDavid Howells */ 150131143d5dSDavid Howells extern int afs_set_page_dirty(struct page *); 150215b4650eSNick Piggin extern int afs_write_begin(struct file *file, struct address_space *mapping, 150315b4650eSNick Piggin loff_t pos, unsigned len, unsigned flags, 150415b4650eSNick Piggin struct page **pagep, void **fsdata); 150515b4650eSNick Piggin extern int afs_write_end(struct file *file, struct address_space *mapping, 150615b4650eSNick Piggin loff_t pos, unsigned len, unsigned copied, 150715b4650eSNick Piggin struct page *page, void *fsdata); 150831143d5dSDavid Howells extern int afs_writepage(struct page *, struct writeback_control *); 150931143d5dSDavid Howells extern int afs_writepages(struct address_space *, struct writeback_control *); 151050b5551dSAl Viro extern ssize_t afs_file_write(struct kiocb *, struct iov_iter *); 151102c24a82SJosef Bacik extern int afs_fsync(struct file *, loff_t, loff_t, int); 15120722f186SSouptick Joarder extern vm_fault_t afs_page_mkwrite(struct vm_fault *vmf); 15134343d008SDavid Howells extern void afs_prune_wb_keys(struct afs_vnode *); 15144343d008SDavid Howells extern int afs_launder_page(struct page *); 151531143d5dSDavid Howells 1516d3e3b7eaSDavid Howells /* 1517d3e3b7eaSDavid Howells * xattr.c 1518d3e3b7eaSDavid Howells */ 1519d3e3b7eaSDavid Howells extern const struct xattr_handler *afs_xattr_handlers[]; 152031143d5dSDavid Howells 152130062bd1SDavid Howells /* 152230062bd1SDavid Howells * yfsclient.c 152330062bd1SDavid Howells */ 1524e49c7b2fSDavid Howells extern void yfs_fs_fetch_data(struct afs_operation *); 1525e49c7b2fSDavid Howells extern void yfs_fs_create_file(struct afs_operation *); 1526e49c7b2fSDavid Howells extern void yfs_fs_make_dir(struct afs_operation *); 1527e49c7b2fSDavid Howells extern void yfs_fs_remove_file2(struct afs_operation *); 1528e49c7b2fSDavid Howells extern void yfs_fs_remove_file(struct afs_operation *); 1529e49c7b2fSDavid Howells extern void yfs_fs_remove_dir(struct afs_operation *); 1530e49c7b2fSDavid Howells extern void yfs_fs_link(struct afs_operation *); 1531e49c7b2fSDavid Howells extern void yfs_fs_symlink(struct afs_operation *); 1532e49c7b2fSDavid Howells extern void yfs_fs_rename(struct afs_operation *); 1533e49c7b2fSDavid Howells extern void yfs_fs_store_data(struct afs_operation *); 1534e49c7b2fSDavid Howells extern void yfs_fs_setattr(struct afs_operation *); 1535e49c7b2fSDavid Howells extern void yfs_fs_get_volume_status(struct afs_operation *); 1536e49c7b2fSDavid Howells extern void yfs_fs_set_lock(struct afs_operation *); 1537e49c7b2fSDavid Howells extern void yfs_fs_extend_lock(struct afs_operation *); 1538e49c7b2fSDavid Howells extern void yfs_fs_release_lock(struct afs_operation *); 1539e49c7b2fSDavid Howells extern void yfs_fs_fetch_status(struct afs_operation *); 1540e49c7b2fSDavid Howells extern void yfs_fs_inline_bulk_status(struct afs_operation *); 1541d2ddc776SDavid Howells 1542ae46578bSDavid Howells struct yfs_acl { 1543ae46578bSDavid Howells struct afs_acl *acl; /* Dir/file/symlink ACL */ 1544ae46578bSDavid Howells struct afs_acl *vol_acl; /* Whole volume ACL */ 1545ae46578bSDavid Howells u32 inherit_flag; /* True if ACL is inherited from parent dir */ 1546ae46578bSDavid Howells u32 num_cleaned; /* Number of ACEs removed due to subject removal */ 1547ae46578bSDavid Howells unsigned int flags; 1548ae46578bSDavid Howells #define YFS_ACL_WANT_ACL 0x01 /* Set if caller wants ->acl */ 1549ae46578bSDavid Howells #define YFS_ACL_WANT_VOL_ACL 0x02 /* Set if caller wants ->vol_acl */ 1550ae46578bSDavid Howells }; 1551ae46578bSDavid Howells 1552ae46578bSDavid Howells extern void yfs_free_opaque_acl(struct yfs_acl *); 1553e49c7b2fSDavid Howells extern void yfs_fs_fetch_opaque_acl(struct afs_operation *); 1554e49c7b2fSDavid Howells extern void yfs_fs_store_opaque_acl2(struct afs_operation *); 1555ae46578bSDavid Howells 1556d2ddc776SDavid Howells /* 1557d2ddc776SDavid Howells * Miscellaneous inline functions. 1558d2ddc776SDavid Howells */ 1559d2ddc776SDavid Howells static inline struct afs_vnode *AFS_FS_I(struct inode *inode) 1560d2ddc776SDavid Howells { 1561d2ddc776SDavid Howells return container_of(inode, struct afs_vnode, vfs_inode); 1562d2ddc776SDavid Howells } 1563d2ddc776SDavid Howells 1564d2ddc776SDavid Howells static inline struct inode *AFS_VNODE_TO_I(struct afs_vnode *vnode) 1565d2ddc776SDavid Howells { 1566d2ddc776SDavid Howells return &vnode->vfs_inode; 1567d2ddc776SDavid Howells } 1568d2ddc776SDavid Howells 1569e49c7b2fSDavid Howells /* 1570e49c7b2fSDavid Howells * Note that a dentry got changed. We need to set d_fsdata to the data version 1571e49c7b2fSDavid Howells * number derived from the result of the operation. It doesn't matter if 1572e49c7b2fSDavid Howells * d_fsdata goes backwards as we'll just revalidate. 1573e49c7b2fSDavid Howells */ 1574e49c7b2fSDavid Howells static inline void afs_update_dentry_version(struct afs_operation *op, 1575e49c7b2fSDavid Howells struct afs_vnode_param *dir_vp, 1576e49c7b2fSDavid Howells struct dentry *dentry) 1577e49c7b2fSDavid Howells { 1578e49c7b2fSDavid Howells if (!op->error) 1579e49c7b2fSDavid Howells dentry->d_fsdata = 1580e49c7b2fSDavid Howells (void *)(unsigned long)dir_vp->scb.status.data_version; 1581e49c7b2fSDavid Howells } 1582e49c7b2fSDavid Howells 1583b6489a49SDavid Howells /* 1584b6489a49SDavid Howells * Check for a conflicting operation on a directory that we just unlinked from. 1585b6489a49SDavid Howells * If someone managed to sneak a link or an unlink in on the file we just 1586b6489a49SDavid Howells * unlinked, we won't be able to trust nlink on an AFS file (but not YFS). 1587b6489a49SDavid Howells */ 1588b6489a49SDavid Howells static inline void afs_check_dir_conflict(struct afs_operation *op, 1589b6489a49SDavid Howells struct afs_vnode_param *dvp) 1590b6489a49SDavid Howells { 1591b6489a49SDavid Howells if (dvp->dv_before + dvp->dv_delta != dvp->scb.status.data_version) 1592b6489a49SDavid Howells op->flags |= AFS_OPERATION_DIR_CONFLICT; 1593b6489a49SDavid Howells } 1594b6489a49SDavid Howells 1595f51375cdSDavid Howells static inline int afs_io_error(struct afs_call *call, enum afs_io_error where) 1596f51375cdSDavid Howells { 1597f51375cdSDavid Howells trace_afs_io_error(call->debug_id, -EIO, where); 1598f51375cdSDavid Howells return -EIO; 1599f51375cdSDavid Howells } 1600f51375cdSDavid Howells 1601f51375cdSDavid Howells static inline int afs_bad(struct afs_vnode *vnode, enum afs_file_error where) 1602f51375cdSDavid Howells { 1603f51375cdSDavid Howells trace_afs_file_error(vnode, -EIO, where); 1604f51375cdSDavid Howells return -EIO; 1605f51375cdSDavid Howells } 1606d2ddc776SDavid Howells 160708e0e7c8SDavid Howells /*****************************************************************************/ 160808e0e7c8SDavid Howells /* 160908e0e7c8SDavid Howells * debug tracing 161008e0e7c8SDavid Howells */ 161108e0e7c8SDavid Howells extern unsigned afs_debug; 161208e0e7c8SDavid Howells 161308e0e7c8SDavid Howells #define dbgprintk(FMT,...) \ 1614ad16df84SSven Schnelle printk("[%-6.6s] "FMT"\n", current->comm ,##__VA_ARGS__) 161508e0e7c8SDavid Howells 1616530b6412SHarvey Harrison #define kenter(FMT,...) dbgprintk("==> %s("FMT")",__func__ ,##__VA_ARGS__) 1617530b6412SHarvey Harrison #define kleave(FMT,...) dbgprintk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) 161808e0e7c8SDavid Howells #define kdebug(FMT,...) dbgprintk(" "FMT ,##__VA_ARGS__) 161908e0e7c8SDavid Howells 162008e0e7c8SDavid Howells 162108e0e7c8SDavid Howells #if defined(__KDEBUG) 162208e0e7c8SDavid Howells #define _enter(FMT,...) kenter(FMT,##__VA_ARGS__) 162308e0e7c8SDavid Howells #define _leave(FMT,...) kleave(FMT,##__VA_ARGS__) 162408e0e7c8SDavid Howells #define _debug(FMT,...) kdebug(FMT,##__VA_ARGS__) 162508e0e7c8SDavid Howells 162608e0e7c8SDavid Howells #elif defined(CONFIG_AFS_DEBUG) 162708e0e7c8SDavid Howells #define AFS_DEBUG_KENTER 0x01 162808e0e7c8SDavid Howells #define AFS_DEBUG_KLEAVE 0x02 162908e0e7c8SDavid Howells #define AFS_DEBUG_KDEBUG 0x04 163008e0e7c8SDavid Howells 163108e0e7c8SDavid Howells #define _enter(FMT,...) \ 163208e0e7c8SDavid Howells do { \ 163308e0e7c8SDavid Howells if (unlikely(afs_debug & AFS_DEBUG_KENTER)) \ 163408e0e7c8SDavid Howells kenter(FMT,##__VA_ARGS__); \ 163508e0e7c8SDavid Howells } while (0) 163608e0e7c8SDavid Howells 163708e0e7c8SDavid Howells #define _leave(FMT,...) \ 163808e0e7c8SDavid Howells do { \ 163908e0e7c8SDavid Howells if (unlikely(afs_debug & AFS_DEBUG_KLEAVE)) \ 164008e0e7c8SDavid Howells kleave(FMT,##__VA_ARGS__); \ 164108e0e7c8SDavid Howells } while (0) 164208e0e7c8SDavid Howells 164308e0e7c8SDavid Howells #define _debug(FMT,...) \ 164408e0e7c8SDavid Howells do { \ 164508e0e7c8SDavid Howells if (unlikely(afs_debug & AFS_DEBUG_KDEBUG)) \ 164608e0e7c8SDavid Howells kdebug(FMT,##__VA_ARGS__); \ 164708e0e7c8SDavid Howells } while (0) 164808e0e7c8SDavid Howells 164908e0e7c8SDavid Howells #else 165012fdff3fSDavid Howells #define _enter(FMT,...) no_printk("==> %s("FMT")",__func__ ,##__VA_ARGS__) 165112fdff3fSDavid Howells #define _leave(FMT,...) no_printk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) 165212fdff3fSDavid Howells #define _debug(FMT,...) no_printk(" "FMT ,##__VA_ARGS__) 165308e0e7c8SDavid Howells #endif 165408e0e7c8SDavid Howells 165508e0e7c8SDavid Howells /* 165608e0e7c8SDavid Howells * debug assertion checking 165708e0e7c8SDavid Howells */ 165808e0e7c8SDavid Howells #if 1 // defined(__KDEBUGALL) 165908e0e7c8SDavid Howells 166008e0e7c8SDavid Howells #define ASSERT(X) \ 166108e0e7c8SDavid Howells do { \ 166208e0e7c8SDavid Howells if (unlikely(!(X))) { \ 166308e0e7c8SDavid Howells printk(KERN_ERR "\n"); \ 166408e0e7c8SDavid Howells printk(KERN_ERR "AFS: Assertion failed\n"); \ 166508e0e7c8SDavid Howells BUG(); \ 166608e0e7c8SDavid Howells } \ 166708e0e7c8SDavid Howells } while(0) 166808e0e7c8SDavid Howells 166908e0e7c8SDavid Howells #define ASSERTCMP(X, OP, Y) \ 167008e0e7c8SDavid Howells do { \ 167108e0e7c8SDavid Howells if (unlikely(!((X) OP (Y)))) { \ 167208e0e7c8SDavid Howells printk(KERN_ERR "\n"); \ 167308e0e7c8SDavid Howells printk(KERN_ERR "AFS: Assertion failed\n"); \ 167408e0e7c8SDavid Howells printk(KERN_ERR "%lu " #OP " %lu is false\n", \ 167508e0e7c8SDavid Howells (unsigned long)(X), (unsigned long)(Y)); \ 167608e0e7c8SDavid Howells printk(KERN_ERR "0x%lx " #OP " 0x%lx is false\n", \ 167708e0e7c8SDavid Howells (unsigned long)(X), (unsigned long)(Y)); \ 167808e0e7c8SDavid Howells BUG(); \ 167908e0e7c8SDavid Howells } \ 168008e0e7c8SDavid Howells } while(0) 168108e0e7c8SDavid Howells 1682416351f2SDavid Howells #define ASSERTRANGE(L, OP1, N, OP2, H) \ 1683416351f2SDavid Howells do { \ 1684416351f2SDavid Howells if (unlikely(!((L) OP1 (N)) || !((N) OP2 (H)))) { \ 1685416351f2SDavid Howells printk(KERN_ERR "\n"); \ 1686416351f2SDavid Howells printk(KERN_ERR "AFS: Assertion failed\n"); \ 1687416351f2SDavid Howells printk(KERN_ERR "%lu "#OP1" %lu "#OP2" %lu is false\n", \ 1688416351f2SDavid Howells (unsigned long)(L), (unsigned long)(N), \ 1689416351f2SDavid Howells (unsigned long)(H)); \ 1690416351f2SDavid Howells printk(KERN_ERR "0x%lx "#OP1" 0x%lx "#OP2" 0x%lx is false\n", \ 1691416351f2SDavid Howells (unsigned long)(L), (unsigned long)(N), \ 1692416351f2SDavid Howells (unsigned long)(H)); \ 1693416351f2SDavid Howells BUG(); \ 1694416351f2SDavid Howells } \ 1695416351f2SDavid Howells } while(0) 1696416351f2SDavid Howells 169708e0e7c8SDavid Howells #define ASSERTIF(C, X) \ 169808e0e7c8SDavid Howells do { \ 169908e0e7c8SDavid Howells if (unlikely((C) && !(X))) { \ 170008e0e7c8SDavid Howells printk(KERN_ERR "\n"); \ 170108e0e7c8SDavid Howells printk(KERN_ERR "AFS: Assertion failed\n"); \ 170208e0e7c8SDavid Howells BUG(); \ 170308e0e7c8SDavid Howells } \ 170408e0e7c8SDavid Howells } while(0) 170508e0e7c8SDavid Howells 170608e0e7c8SDavid Howells #define ASSERTIFCMP(C, X, OP, Y) \ 170708e0e7c8SDavid Howells do { \ 170808e0e7c8SDavid Howells if (unlikely((C) && !((X) OP (Y)))) { \ 170908e0e7c8SDavid Howells printk(KERN_ERR "\n"); \ 171008e0e7c8SDavid Howells printk(KERN_ERR "AFS: Assertion failed\n"); \ 171108e0e7c8SDavid Howells printk(KERN_ERR "%lu " #OP " %lu is false\n", \ 171208e0e7c8SDavid Howells (unsigned long)(X), (unsigned long)(Y)); \ 171308e0e7c8SDavid Howells printk(KERN_ERR "0x%lx " #OP " 0x%lx is false\n", \ 171408e0e7c8SDavid Howells (unsigned long)(X), (unsigned long)(Y)); \ 171508e0e7c8SDavid Howells BUG(); \ 171608e0e7c8SDavid Howells } \ 171708e0e7c8SDavid Howells } while(0) 171808e0e7c8SDavid Howells 171908e0e7c8SDavid Howells #else 172008e0e7c8SDavid Howells 172108e0e7c8SDavid Howells #define ASSERT(X) \ 172208e0e7c8SDavid Howells do { \ 172308e0e7c8SDavid Howells } while(0) 172408e0e7c8SDavid Howells 172508e0e7c8SDavid Howells #define ASSERTCMP(X, OP, Y) \ 172608e0e7c8SDavid Howells do { \ 172708e0e7c8SDavid Howells } while(0) 172808e0e7c8SDavid Howells 1729416351f2SDavid Howells #define ASSERTRANGE(L, OP1, N, OP2, H) \ 1730416351f2SDavid Howells do { \ 1731416351f2SDavid Howells } while(0) 1732416351f2SDavid Howells 173308e0e7c8SDavid Howells #define ASSERTIF(C, X) \ 173408e0e7c8SDavid Howells do { \ 173508e0e7c8SDavid Howells } while(0) 173608e0e7c8SDavid Howells 173708e0e7c8SDavid Howells #define ASSERTIFCMP(C, X, OP, Y) \ 173808e0e7c8SDavid Howells do { \ 173908e0e7c8SDavid Howells } while(0) 174008e0e7c8SDavid Howells 174108e0e7c8SDavid Howells #endif /* __KDEBUGALL */ 1742