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 */ 110bd80d8a8SDavid 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. */ 2105cbf0398SDavid Howells struct netfs_read_subrequest *subreq; /* Fscache helper read request this belongs to */ 211f3ddee8dSDavid Howells afs_dataversion_t data_version; /* Version number returned by server */ 212f3ddee8dSDavid Howells refcount_t usage; 213c4508464SDavid Howells unsigned int call_debug_id; 214196ee9cdSDavid Howells unsigned int nr_pages; 215c4508464SDavid Howells int error; 216c4508464SDavid Howells void (*done)(struct afs_read *); 217c4508464SDavid Howells void (*cleanup)(struct afs_read *); 218c4508464SDavid Howells struct iov_iter *iter; /* Iterator representing the buffer */ 219c4508464SDavid Howells struct iov_iter def_iter; /* Default iterator */ 220196ee9cdSDavid Howells }; 221196ee9cdSDavid Howells 222196ee9cdSDavid Howells /* 22308e0e7c8SDavid Howells * AFS superblock private data 22408e0e7c8SDavid Howells * - there's one superblock per volume 22508e0e7c8SDavid Howells */ 22608e0e7c8SDavid Howells struct afs_super_info { 2275b86d4ffSDavid Howells struct net *net_ns; /* Network namespace */ 22849566f6fSDavid Howells struct afs_cell *cell; /* The cell in which the volume resides */ 22908e0e7c8SDavid Howells struct afs_volume *volume; /* volume record */ 2306c6c1d63SDavid Howells enum afs_flock_mode flock_mode:8; /* File locking emulation mode */ 2314d673da1SDavid Howells bool dyn_root; /* True if dynamic root */ 23208e0e7c8SDavid Howells }; 23308e0e7c8SDavid Howells 23408e0e7c8SDavid Howells static inline struct afs_super_info *AFS_FS_S(struct super_block *sb) 23508e0e7c8SDavid Howells { 23608e0e7c8SDavid Howells return sb->s_fs_info; 23708e0e7c8SDavid Howells } 23808e0e7c8SDavid Howells 23908e0e7c8SDavid Howells extern struct file_system_type afs_fs_type; 24008e0e7c8SDavid Howells 24108e0e7c8SDavid Howells /* 2426f8880d8SDavid Howells * Set of substitutes for @sys. 2436f8880d8SDavid Howells */ 2446f8880d8SDavid Howells struct afs_sysnames { 2456f8880d8SDavid Howells #define AFS_NR_SYSNAME 16 2466f8880d8SDavid Howells char *subs[AFS_NR_SYSNAME]; 2476f8880d8SDavid Howells refcount_t usage; 2486f8880d8SDavid Howells unsigned short nr; 2496f8880d8SDavid Howells char blank[1]; 2506f8880d8SDavid Howells }; 2516f8880d8SDavid Howells 2526f8880d8SDavid Howells /* 253f044c884SDavid Howells * AFS network namespace record. 254f044c884SDavid Howells */ 255f044c884SDavid Howells struct afs_net { 2565b86d4ffSDavid Howells struct net *net; /* Backpointer to the owning net namespace */ 257f044c884SDavid Howells struct afs_uuid uuid; 258f044c884SDavid Howells bool live; /* F if this namespace is being removed */ 259f044c884SDavid Howells 260f044c884SDavid Howells /* AF_RXRPC I/O stuff */ 261f044c884SDavid Howells struct socket *socket; 262f044c884SDavid Howells struct afs_call *spare_incoming_call; 263f044c884SDavid Howells struct work_struct charge_preallocation_work; 264f044c884SDavid Howells struct mutex socket_mutex; 265f044c884SDavid Howells atomic_t nr_outstanding_calls; 266f044c884SDavid Howells atomic_t nr_superblocks; 267f044c884SDavid Howells 268f044c884SDavid Howells /* Cell database */ 269989782dcSDavid Howells struct rb_root cells; 27092e3cc91SDavid Howells struct afs_cell *ws_cell; 271989782dcSDavid Howells struct work_struct cells_manager; 272989782dcSDavid Howells struct timer_list cells_timer; 273989782dcSDavid Howells atomic_t cells_outstanding; 27492e3cc91SDavid Howells struct rw_semaphore cells_lock; 2758a070a96SDavid Howells struct mutex cells_alias_lock; 276f044c884SDavid Howells 2770da0b7fdSDavid Howells struct mutex proc_cells_lock; 2786b3944e4SDavid Howells struct hlist_head proc_cells; 279f044c884SDavid Howells 280d2ddc776SDavid Howells /* Known servers. Theoretically each fileserver can only be in one 281d2ddc776SDavid Howells * cell, but in practice, people create aliases and subsets and there's 282d2ddc776SDavid Howells * no easy way to distinguish them. 283d2ddc776SDavid Howells */ 284f6cbb368SDavid Howells seqlock_t fs_lock; /* For fs_servers, fs_probe_*, fs_proc */ 285d2ddc776SDavid Howells struct rb_root fs_servers; /* afs_server (by server UUID or address) */ 286f6cbb368SDavid Howells struct list_head fs_probe_fast; /* List of afs_server to probe at 30s intervals */ 287f6cbb368SDavid Howells struct list_head fs_probe_slow; /* List of afs_server to probe at 5m intervals */ 288d2ddc776SDavid Howells struct hlist_head fs_proc; /* procfs servers list */ 289d2ddc776SDavid Howells 290d2ddc776SDavid Howells struct hlist_head fs_addresses4; /* afs_server (by lowest IPv4 addr) */ 291d2ddc776SDavid Howells struct hlist_head fs_addresses6; /* afs_server (by lowest IPv6 addr) */ 292d2ddc776SDavid Howells seqlock_t fs_addr_lock; /* For fs_addresses[46] */ 293d2ddc776SDavid Howells 294d2ddc776SDavid Howells struct work_struct fs_manager; 295d2ddc776SDavid Howells struct timer_list fs_timer; 296f6cbb368SDavid Howells 297f6cbb368SDavid Howells struct work_struct fs_prober; 298f6cbb368SDavid Howells struct timer_list fs_probe_timer; 299d2ddc776SDavid Howells atomic_t servers_outstanding; 300f044c884SDavid Howells 301f044c884SDavid Howells /* File locking renewal management */ 302f044c884SDavid Howells struct mutex lock_manager_mutex; 303f044c884SDavid Howells 304f044c884SDavid Howells /* Misc */ 3050da0b7fdSDavid Howells struct super_block *dynroot_sb; /* Dynamic root mount superblock */ 306f044c884SDavid Howells struct proc_dir_entry *proc_afs; /* /proc/net/afs directory */ 3076f8880d8SDavid Howells struct afs_sysnames *sysnames; 3086f8880d8SDavid Howells rwlock_t sysnames_lock; 309d55b4da4SDavid Howells 310d55b4da4SDavid Howells /* Statistics counters */ 311d55b4da4SDavid Howells atomic_t n_lookup; /* Number of lookups done */ 312d55b4da4SDavid Howells atomic_t n_reval; /* Number of dentries needing revalidation */ 313d55b4da4SDavid Howells atomic_t n_inval; /* Number of invalidations by the server */ 314f3ddee8dSDavid Howells atomic_t n_relpg; /* Number of invalidations by releasepage */ 315d55b4da4SDavid Howells atomic_t n_read_dir; /* Number of directory pages read */ 31663a4681fSDavid Howells atomic_t n_dir_cr; /* Number of directory entry creation edits */ 31763a4681fSDavid Howells atomic_t n_dir_rm; /* Number of directory entry removal edits */ 31876a5cb6fSDavid Howells atomic_t n_stores; /* Number of store ops */ 31976a5cb6fSDavid Howells atomic_long_t n_store_bytes; /* Number of bytes stored */ 32076a5cb6fSDavid Howells atomic_long_t n_fetch_bytes; /* Number of bytes fetched */ 32176a5cb6fSDavid Howells atomic_t n_fetches; /* Number of data fetch ops */ 322f044c884SDavid Howells }; 323f044c884SDavid Howells 3246f8880d8SDavid Howells extern const char afs_init_sysname[]; 325f044c884SDavid Howells 326989782dcSDavid Howells enum afs_cell_state { 327989782dcSDavid Howells AFS_CELL_UNSET, 328989782dcSDavid Howells AFS_CELL_ACTIVATING, 329989782dcSDavid Howells AFS_CELL_ACTIVE, 330989782dcSDavid Howells AFS_CELL_DEACTIVATING, 331989782dcSDavid Howells AFS_CELL_INACTIVE, 332989782dcSDavid Howells AFS_CELL_FAILED, 3331d0e850aSDavid Howells AFS_CELL_REMOVED, 334989782dcSDavid Howells }; 335989782dcSDavid Howells 336f044c884SDavid Howells /* 337d2ddc776SDavid Howells * AFS cell record. 338d2ddc776SDavid Howells * 339d2ddc776SDavid Howells * This is a tricky concept to get right as it is possible to create aliases 340d2ddc776SDavid Howells * simply by pointing AFSDB/SRV records for two names at the same set of VL 341d2ddc776SDavid Howells * servers; it is also possible to do things like setting up two sets of VL 342d2ddc776SDavid Howells * servers, one of which provides a superset of the volumes provided by the 343d2ddc776SDavid Howells * other (for internal/external division, for example). 344d2ddc776SDavid Howells * 345d2ddc776SDavid Howells * Cells only exist in the sense that (a) a cell's name maps to a set of VL 346d2ddc776SDavid Howells * servers and (b) a cell's name is used by the client to select the key to use 347d2ddc776SDavid Howells * for authentication and encryption. The cell name is not typically used in 348d2ddc776SDavid Howells * the protocol. 349d2ddc776SDavid Howells * 3508a070a96SDavid Howells * Two cells are determined to be aliases if they have an explicit alias (YFS 3518a070a96SDavid Howells * only), share any VL servers in common or have at least one volume in common. 3528a070a96SDavid Howells * "In common" means that the address list of the VL servers or the fileservers 3538a070a96SDavid Howells * share at least one endpoint. 35408e0e7c8SDavid Howells */ 35508e0e7c8SDavid Howells struct afs_cell { 356989782dcSDavid Howells union { 357989782dcSDavid Howells struct rcu_head rcu; 358989782dcSDavid Howells struct rb_node net_node; /* Node in net->cells */ 359989782dcSDavid Howells }; 360989782dcSDavid Howells struct afs_net *net; 3618a070a96SDavid Howells struct afs_cell *alias_of; /* The cell this is an alias of */ 3628a070a96SDavid Howells struct afs_volume *root_volume; /* The root.cell volume if there is one */ 36300d3b7a4SDavid Howells struct key *anonymous_key; /* anonymous user key for this cell */ 364989782dcSDavid Howells struct work_struct manager; /* Manager for init/deinit/dns */ 3656b3944e4SDavid Howells struct hlist_node proc_link; /* /proc cell list link */ 366989782dcSDavid Howells time64_t dns_expiry; /* Time AFSDB/SRV record expires */ 367989782dcSDavid Howells time64_t last_inactive; /* Time of last drop of usage count */ 36888c853c3SDavid Howells atomic_t ref; /* Struct refcount */ 36988c853c3SDavid Howells atomic_t active; /* Active usage counter */ 370989782dcSDavid Howells unsigned long flags; 371d5c32c89SDavid Howells #define AFS_CELL_FL_NO_GC 0 /* The cell was added manually, don't auto-gc */ 372d5c32c89SDavid Howells #define AFS_CELL_FL_DO_LOOKUP 1 /* DNS lookup requested */ 3738a070a96SDavid Howells #define AFS_CELL_FL_CHECK_ALIAS 2 /* Need to check for aliases */ 374989782dcSDavid Howells enum afs_cell_state state; 375989782dcSDavid Howells short error; 376d5c32c89SDavid Howells enum dns_record_source dns_source:8; /* Latest source of data from lookup */ 377d5c32c89SDavid Howells enum dns_lookup_status dns_status:8; /* Latest status of data from lookup */ 378d5c32c89SDavid Howells unsigned int dns_lookup_count; /* Counter of DNS lookups */ 379dca54a7bSDavid Howells unsigned int debug_id; 380989782dcSDavid Howells 38120325960SDavid Howells /* The volumes belonging to this cell */ 38220325960SDavid Howells struct rb_root volumes; /* Tree of volumes on this server */ 38320325960SDavid Howells struct hlist_head proc_volumes; /* procfs volume list */ 38420325960SDavid Howells seqlock_t volume_lock; /* For volumes */ 38520325960SDavid Howells 386d2ddc776SDavid Howells /* Active fileserver interaction state. */ 38720325960SDavid Howells struct rb_root fs_servers; /* afs_server (by server UUID) */ 38820325960SDavid Howells seqlock_t fs_lock; /* For fs_servers */ 3896e0e99d5SDavid Howells struct rw_semaphore fs_open_mmaps_lock; 3906e0e99d5SDavid Howells struct list_head fs_open_mmaps; /* List of vnodes that are mmapped */ 3914fe6a946SDavid Howells atomic_t fs_s_break; /* Counter of CB.InitCallBackState messages */ 392989782dcSDavid Howells 393d2ddc776SDavid Howells /* VL server list. */ 3940a5143f2SDavid Howells rwlock_t vl_servers_lock; /* Lock on vl_servers */ 3950a5143f2SDavid Howells struct afs_vlserver_list __rcu *vl_servers; 3960a5143f2SDavid Howells 397989782dcSDavid Howells u8 name_len; /* Length of name */ 398719fdd32SDavid Howells char *name; /* Cell name, case-flattened and NUL-padded */ 39908e0e7c8SDavid Howells }; 40008e0e7c8SDavid Howells 40108e0e7c8SDavid Howells /* 4020a5143f2SDavid Howells * Volume Location server record. 4030a5143f2SDavid Howells */ 4040a5143f2SDavid Howells struct afs_vlserver { 4050a5143f2SDavid Howells struct rcu_head rcu; 4060a5143f2SDavid Howells struct afs_addr_list __rcu *addresses; /* List of addresses for this VL server */ 4070a5143f2SDavid Howells unsigned long flags; 4080a5143f2SDavid Howells #define AFS_VLSERVER_FL_PROBED 0 /* The VL server has been probed */ 4090a5143f2SDavid Howells #define AFS_VLSERVER_FL_PROBING 1 /* VL server is being probed */ 4103bf0fb6fSDavid Howells #define AFS_VLSERVER_FL_IS_YFS 2 /* Server is YFS not AFS */ 411b95b3094SDavid Howells #define AFS_VLSERVER_FL_RESPONDING 3 /* VL server is responding */ 4120a5143f2SDavid Howells rwlock_t lock; /* Lock on addresses */ 4130a5143f2SDavid Howells atomic_t usage; 414b95b3094SDavid Howells unsigned int rtt; /* Server's current RTT in uS */ 4153bf0fb6fSDavid Howells 4163bf0fb6fSDavid Howells /* Probe state */ 4173bf0fb6fSDavid Howells wait_queue_head_t probe_wq; 4183bf0fb6fSDavid Howells atomic_t probe_outstanding; 4193bf0fb6fSDavid Howells spinlock_t probe_lock; 4203bf0fb6fSDavid Howells struct { 421b95b3094SDavid Howells unsigned int rtt; /* RTT in uS */ 4223bf0fb6fSDavid Howells u32 abort_code; 4233bf0fb6fSDavid Howells short error; 424fb72cd3dSDavid Howells unsigned short flags; 425fb72cd3dSDavid Howells #define AFS_VLSERVER_PROBE_RESPONDED 0x01 /* At least once response (may be abort) */ 426fb72cd3dSDavid Howells #define AFS_VLSERVER_PROBE_IS_YFS 0x02 /* The peer appears to be YFS */ 427fb72cd3dSDavid Howells #define AFS_VLSERVER_PROBE_NOT_YFS 0x04 /* The peer appears not to be YFS */ 428fb72cd3dSDavid Howells #define AFS_VLSERVER_PROBE_LOCAL_FAILURE 0x08 /* A local failure prevented a probe */ 4293bf0fb6fSDavid Howells } probe; 4303bf0fb6fSDavid Howells 4310a5143f2SDavid Howells u16 port; 4323bf0fb6fSDavid Howells u16 name_len; /* Length of name */ 4330a5143f2SDavid Howells char name[]; /* Server name, case-flattened */ 4340a5143f2SDavid Howells }; 4350a5143f2SDavid Howells 4360a5143f2SDavid Howells /* 4370a5143f2SDavid Howells * Weighted list of Volume Location servers. 4380a5143f2SDavid Howells */ 4390a5143f2SDavid Howells struct afs_vlserver_entry { 4400a5143f2SDavid Howells u16 priority; /* Preference (as SRV) */ 4410a5143f2SDavid Howells u16 weight; /* Weight (as SRV) */ 4420a5143f2SDavid Howells enum dns_record_source source:8; 4430a5143f2SDavid Howells enum dns_lookup_status status:8; 4440a5143f2SDavid Howells struct afs_vlserver *server; 4450a5143f2SDavid Howells }; 4460a5143f2SDavid Howells 4470a5143f2SDavid Howells struct afs_vlserver_list { 4480a5143f2SDavid Howells struct rcu_head rcu; 4490a5143f2SDavid Howells atomic_t usage; 4500a5143f2SDavid Howells u8 nr_servers; 4510a5143f2SDavid Howells u8 index; /* Server currently in use */ 4523bf0fb6fSDavid Howells u8 preferred; /* Preferred server */ 4530a5143f2SDavid Howells enum dns_record_source source:8; 4540a5143f2SDavid Howells enum dns_lookup_status status:8; 4550a5143f2SDavid Howells rwlock_t lock; 4560a5143f2SDavid Howells struct afs_vlserver_entry servers[]; 4570a5143f2SDavid Howells }; 4580a5143f2SDavid Howells 4590a5143f2SDavid Howells /* 460d2ddc776SDavid Howells * Cached VLDB entry. 461d2ddc776SDavid Howells * 462d2ddc776SDavid Howells * This is pointed to by cell->vldb_entries, indexed by name. 46308e0e7c8SDavid Howells */ 464d2ddc776SDavid Howells struct afs_vldb_entry { 465d2ddc776SDavid Howells afs_volid_t vid[3]; /* Volume IDs for R/W, R/O and Bak volumes */ 46600d3b7a4SDavid Howells 467d2ddc776SDavid Howells unsigned long flags; 468d2ddc776SDavid Howells #define AFS_VLDB_HAS_RW 0 /* - R/W volume exists */ 469d2ddc776SDavid Howells #define AFS_VLDB_HAS_RO 1 /* - R/O volume exists */ 470d2ddc776SDavid Howells #define AFS_VLDB_HAS_BAK 2 /* - Backup volume exists */ 471d2ddc776SDavid Howells #define AFS_VLDB_QUERY_VALID 3 /* - Record is valid */ 472d2ddc776SDavid Howells #define AFS_VLDB_QUERY_ERROR 4 /* - VL server returned error */ 473d2ddc776SDavid Howells 474d2ddc776SDavid Howells uuid_t fs_server[AFS_NMAXNSERVERS]; 47581006805SDavid Howells u32 addr_version[AFS_NMAXNSERVERS]; /* Registration change counters */ 476d2ddc776SDavid Howells u8 fs_mask[AFS_NMAXNSERVERS]; 47708e0e7c8SDavid Howells #define AFS_VOL_VTM_RW 0x01 /* R/W version of the volume is available (on this server) */ 47808e0e7c8SDavid Howells #define AFS_VOL_VTM_RO 0x02 /* R/O version of the volume is available (on this server) */ 47908e0e7c8SDavid Howells #define AFS_VOL_VTM_BAK 0x04 /* backup version of the volume is available (on this server) */ 480d2ddc776SDavid Howells short error; 481d2ddc776SDavid Howells u8 nr_servers; /* Number of server records */ 482d2ddc776SDavid Howells u8 name_len; 483d2ddc776SDavid Howells u8 name[AFS_MAXVOLNAME + 1]; /* NUL-padded volume name */ 48408e0e7c8SDavid Howells }; 48508e0e7c8SDavid Howells 48608e0e7c8SDavid Howells /* 487d2ddc776SDavid Howells * Record of fileserver with which we're actively communicating. 48808e0e7c8SDavid Howells */ 48908e0e7c8SDavid Howells struct afs_server { 490d2ddc776SDavid Howells struct rcu_head rcu; 491d2ddc776SDavid Howells union { 492d2ddc776SDavid Howells uuid_t uuid; /* Server ID */ 493d2ddc776SDavid Howells struct afs_uuid _uuid; 494d2ddc776SDavid Howells }; 495c435ee34SDavid Howells 496d2ddc776SDavid Howells struct afs_addr_list __rcu *addresses; 49720325960SDavid Howells struct afs_cell *cell; /* Cell to which belongs (pins ref) */ 4983c4c4075SDavid Howells struct rb_node uuid_rb; /* Link in net->fs_servers */ 4993c4c4075SDavid Howells struct afs_server __rcu *uuid_next; /* Next server with same UUID */ 5003c4c4075SDavid Howells struct afs_server *uuid_prev; /* Previous server with same UUID */ 501f6cbb368SDavid Howells struct list_head probe_link; /* Link in net->fs_probe_list */ 502d2ddc776SDavid Howells struct hlist_node addr4_link; /* Link in net->fs_addresses4 */ 503d2ddc776SDavid Howells struct hlist_node addr6_link; /* Link in net->fs_addresses6 */ 504d2ddc776SDavid Howells struct hlist_node proc_link; /* Link in net->fs_proc */ 5056e0e99d5SDavid Howells struct work_struct initcb_work; /* Work for CB.InitCallBackState* */ 506d2ddc776SDavid Howells struct afs_server *gc_next; /* Next server in manager's list */ 507977e5f8eSDavid Howells time64_t unuse_time; /* Time at which last unused */ 508c435ee34SDavid Howells unsigned long flags; 509f3c130e6SDavid Howells #define AFS_SERVER_FL_RESPONDING 0 /* The server is responding */ 51032275d3fSDavid Howells #define AFS_SERVER_FL_UPDATING 1 51132275d3fSDavid Howells #define AFS_SERVER_FL_NEEDS_UPDATE 2 /* Fileserver address list is out of date */ 51232275d3fSDavid Howells #define AFS_SERVER_FL_NOT_READY 4 /* The record is not ready for use */ 51332275d3fSDavid Howells #define AFS_SERVER_FL_NOT_FOUND 5 /* VL server says no such server */ 51432275d3fSDavid Howells #define AFS_SERVER_FL_VL_FAIL 6 /* Failed to access VL server */ 515f2686b09SDavid Howells #define AFS_SERVER_FL_MAY_HAVE_CB 8 /* May have callbacks on this fileserver */ 51632275d3fSDavid Howells #define AFS_SERVER_FL_IS_YFS 16 /* Server is YFS not AFS */ 51732275d3fSDavid Howells #define AFS_SERVER_FL_NO_IBULK 17 /* Fileserver doesn't support FS.InlineBulkStatus */ 51832275d3fSDavid Howells #define AFS_SERVER_FL_NO_RM2 18 /* Fileserver doesn't support YFS.RemoveFile2 */ 519b537a3c2SDavid Howells #define AFS_SERVER_FL_HAS_FS64 19 /* Fileserver supports FS.{Fetch,Store}Data64 */ 520977e5f8eSDavid Howells atomic_t ref; /* Object refcount */ 521977e5f8eSDavid Howells atomic_t active; /* Active user count */ 522d2ddc776SDavid Howells u32 addr_version; /* Address list version */ 523f3c130e6SDavid Howells unsigned int rtt; /* Server's current RTT in uS */ 52445218193SDavid Howells unsigned int debug_id; /* Debugging ID for traces */ 52508e0e7c8SDavid Howells 52608e0e7c8SDavid Howells /* file service access */ 527d2ddc776SDavid Howells rwlock_t fs_lock; /* access lock */ 52808e0e7c8SDavid Howells 52908e0e7c8SDavid Howells /* callback promise management */ 530c435ee34SDavid Howells unsigned cb_s_break; /* Break-everything counter. */ 5313bf0fb6fSDavid Howells 5323bf0fb6fSDavid Howells /* Probe state */ 533f6cbb368SDavid Howells unsigned long probed_at; /* Time last probe was dispatched (jiffies) */ 5343bf0fb6fSDavid Howells wait_queue_head_t probe_wq; 5353bf0fb6fSDavid Howells atomic_t probe_outstanding; 5363bf0fb6fSDavid Howells spinlock_t probe_lock; 5373bf0fb6fSDavid Howells struct { 538f3c130e6SDavid Howells unsigned int rtt; /* RTT in uS */ 5393bf0fb6fSDavid Howells u32 abort_code; 5403bf0fb6fSDavid Howells short error; 5413bf0fb6fSDavid Howells bool responded:1; 5423bf0fb6fSDavid Howells bool is_yfs:1; 5433bf0fb6fSDavid Howells bool not_yfs:1; 5443bf0fb6fSDavid Howells bool local_failure:1; 5453bf0fb6fSDavid Howells } probe; 546c435ee34SDavid Howells }; 547c435ee34SDavid Howells 548c435ee34SDavid Howells /* 549194d28cfSDavid Howells * Replaceable volume server list. 55008e0e7c8SDavid Howells */ 551d2ddc776SDavid Howells struct afs_server_entry { 552d2ddc776SDavid Howells struct afs_server *server; 553d2ddc776SDavid Howells }; 554d2ddc776SDavid Howells 555d2ddc776SDavid Howells struct afs_server_list { 556194d28cfSDavid Howells afs_volid_t vids[AFS_MAXTYPES]; /* Volume IDs */ 557d2ddc776SDavid Howells refcount_t usage; 5583bf0fb6fSDavid Howells unsigned char nr_servers; 5593bf0fb6fSDavid Howells unsigned char preferred; /* Preferred server */ 560d2ddc776SDavid Howells unsigned short vnovol_mask; /* Servers to be skipped due to VNOVOL */ 561d2ddc776SDavid Howells unsigned int seq; /* Set to ->servers_seq when installed */ 562d4a96becSDavid Howells rwlock_t lock; 563d2ddc776SDavid Howells struct afs_server_entry servers[]; 56408e0e7c8SDavid Howells }; 56508e0e7c8SDavid Howells 56608e0e7c8SDavid Howells /* 567d2ddc776SDavid Howells * Live AFS volume management. 56808e0e7c8SDavid Howells */ 569d2ddc776SDavid Howells struct afs_volume { 57020325960SDavid Howells union { 57120325960SDavid Howells struct rcu_head rcu; 572d2ddc776SDavid Howells afs_volid_t vid; /* volume ID */ 57320325960SDavid Howells }; 574d2ddc776SDavid Howells atomic_t usage; 575d2ddc776SDavid Howells time64_t update_at; /* Time at which to next update */ 576d2ddc776SDavid Howells struct afs_cell *cell; /* Cell to which belongs (pins ref) */ 57720325960SDavid Howells struct rb_node cell_node; /* Link in cell->volumes */ 57820325960SDavid Howells struct hlist_node proc_link; /* Link in cell->proc_volumes */ 57920325960SDavid Howells struct super_block __rcu *sb; /* Superblock on which inodes reside */ 580d2ddc776SDavid Howells unsigned long flags; 581d2ddc776SDavid Howells #define AFS_VOLUME_NEEDS_UPDATE 0 /* - T if an update needs performing */ 582d2ddc776SDavid Howells #define AFS_VOLUME_UPDATING 1 /* - T if an update is in progress */ 583d2ddc776SDavid Howells #define AFS_VOLUME_WAIT 2 /* - T if users must wait for update */ 584d2ddc776SDavid Howells #define AFS_VOLUME_DELETED 3 /* - T if volume appears deleted */ 585d2ddc776SDavid Howells #define AFS_VOLUME_OFFLINE 4 /* - T if volume offline notice given */ 586d2ddc776SDavid Howells #define AFS_VOLUME_BUSY 5 /* - T if volume busy notice given */ 58720325960SDavid Howells #define AFS_VOLUME_MAYBE_NO_IBULK 6 /* - T if some servers don't have InlineBulkStatus */ 588d2ddc776SDavid Howells #ifdef CONFIG_AFS_FSCACHE 589523d27cdSDavid Howells struct fscache_volume *cache; /* Caching cookie */ 590d2ddc776SDavid Howells #endif 5918a070a96SDavid Howells struct afs_server_list __rcu *servers; /* List of servers on which volume resides */ 592d2ddc776SDavid Howells rwlock_t servers_lock; /* Lock for ->servers */ 593d2ddc776SDavid Howells unsigned int servers_seq; /* Incremented each time ->servers changes */ 594d2ddc776SDavid Howells 59568251f0aSDavid Howells unsigned cb_v_break; /* Break-everything counter. */ 59690fa9b64SDavid Howells rwlock_t cb_v_break_lock; 59768251f0aSDavid Howells 598d2ddc776SDavid Howells afs_voltype_t type; /* type of volume */ 599d2ddc776SDavid Howells char type_force; /* force volume type (suppress R/O -> R/W) */ 600d2ddc776SDavid Howells u8 name_len; 601d2ddc776SDavid Howells u8 name[AFS_MAXVOLNAME + 1]; /* NUL-padded volume name */ 60208e0e7c8SDavid Howells }; 60308e0e7c8SDavid Howells 6040fafdc9fSDavid Howells enum afs_lock_state { 6050fafdc9fSDavid Howells AFS_VNODE_LOCK_NONE, /* The vnode has no lock on the server */ 6060fafdc9fSDavid Howells AFS_VNODE_LOCK_WAITING_FOR_CB, /* We're waiting for the server to break the callback */ 6070fafdc9fSDavid Howells AFS_VNODE_LOCK_SETTING, /* We're asking the server for a lock */ 6080fafdc9fSDavid Howells AFS_VNODE_LOCK_GRANTED, /* We have a lock on the server */ 6090fafdc9fSDavid Howells AFS_VNODE_LOCK_EXTENDING, /* We're extending a lock on the server */ 6100fafdc9fSDavid Howells AFS_VNODE_LOCK_NEED_UNLOCK, /* We need to unlock on the server */ 6110fafdc9fSDavid Howells AFS_VNODE_LOCK_UNLOCKING, /* We're telling the server to unlock */ 612cdfb26b4SDavid Howells AFS_VNODE_LOCK_DELETED, /* The vnode has been deleted whilst we have a lock */ 6130fafdc9fSDavid Howells }; 6140fafdc9fSDavid Howells 61508e0e7c8SDavid Howells /* 616f8de483eSDavid Howells * AFS inode private data. 617f8de483eSDavid Howells * 618f8de483eSDavid Howells * Note that afs_alloc_inode() *must* reset anything that could incorrectly 619f8de483eSDavid Howells * leak from one inode to another. 62008e0e7c8SDavid Howells */ 62108e0e7c8SDavid Howells struct afs_vnode { 62208e0e7c8SDavid Howells struct inode vfs_inode; /* the VFS's inode record */ 62308e0e7c8SDavid Howells 62408e0e7c8SDavid Howells struct afs_volume *volume; /* volume on which vnode resides */ 62508e0e7c8SDavid Howells struct afs_fid fid; /* the file identifier for this inode */ 62608e0e7c8SDavid Howells struct afs_file_status status; /* AFS status info for this file */ 627a4ff7401SDavid Howells afs_dataversion_t invalid_before; /* Child dentries are invalid before this */ 6289b3f26c9SDavid Howells #ifdef CONFIG_AFS_FSCACHE 6299b3f26c9SDavid Howells struct fscache_cookie *cache; /* caching cookie */ 63008e0e7c8SDavid Howells #endif 631fe342cf7SDavid Howells struct afs_permits __rcu *permit_cache; /* cache of permits so far obtained */ 632d2ddc776SDavid Howells struct mutex io_lock; /* Lock for serialising I/O on this mutex */ 633b61f7dcfSDavid Howells struct rw_semaphore validate_lock; /* lock for validating this vnode */ 63479ddbfa5SDavid Howells struct rw_semaphore rmdir_lock; /* Lock for rmdir vs sillyrename */ 63579ddbfa5SDavid Howells struct key *silly_key; /* Silly rename key */ 6364343d008SDavid Howells spinlock_t wb_lock; /* lock for wb_keys */ 63708e0e7c8SDavid Howells spinlock_t lock; /* waitqueue/flags lock */ 63808e0e7c8SDavid Howells unsigned long flags; 639c435ee34SDavid Howells #define AFS_VNODE_CB_PROMISED 0 /* Set if vnode has a callback promise */ 640260a9803SDavid Howells #define AFS_VNODE_UNSET 1 /* set if vnode attributes not yet set */ 641f3ddee8dSDavid Howells #define AFS_VNODE_DIR_VALID 2 /* Set if dir contents are valid */ 64208e0e7c8SDavid Howells #define AFS_VNODE_ZAP_DATA 3 /* set if vnode's data should be invalidated */ 64308e0e7c8SDavid Howells #define AFS_VNODE_DELETED 4 /* set if vnode deleted on server */ 64408e0e7c8SDavid Howells #define AFS_VNODE_MOUNTPOINT 5 /* set if vnode is a mountpoint symlink */ 6450fafdc9fSDavid Howells #define AFS_VNODE_AUTOCELL 6 /* set if Vnode is an auto mount point */ 6460fafdc9fSDavid Howells #define AFS_VNODE_PSEUDODIR 7 /* set if Vnode is a pseudo directory */ 6475a813276SDavid Howells #define AFS_VNODE_NEW_CONTENT 8 /* Set if file has new content (create/trunc-0) */ 648b6489a49SDavid Howells #define AFS_VNODE_SILLY_DELETED 9 /* Set if file has been silly-deleted */ 64922650f14SDavid Howells #define AFS_VNODE_MODIFYING 10 /* Set if we're performing a modification op */ 65008e0e7c8SDavid Howells 6514343d008SDavid Howells struct list_head wb_keys; /* List of keys available for writeback */ 652e8d6c554SDavid Howells struct list_head pending_locks; /* locks waiting to be granted */ 653e8d6c554SDavid Howells struct list_head granted_locks; /* locks granted on this file */ 654e8d6c554SDavid Howells struct delayed_work lock_work; /* work to be done in locking */ 6550fafdc9fSDavid Howells struct key *lock_key; /* Key to be used in lock ops */ 656a690f60aSDavid Howells ktime_t locked_at; /* Time at which lock obtained */ 6570fafdc9fSDavid Howells enum afs_lock_state lock_state : 8; 6580fafdc9fSDavid Howells afs_lock_type_t lock_type : 8; 65931143d5dSDavid Howells 66008e0e7c8SDavid Howells /* outstanding callback notification on this file */ 6616e0e99d5SDavid Howells struct work_struct cb_work; /* Work for mmap'd files */ 6626e0e99d5SDavid Howells struct list_head cb_mmap_link; /* Link in cell->fs_open_mmaps */ 66320325960SDavid Howells void *cb_server; /* Server with callback/filelock */ 6646e0e99d5SDavid Howells atomic_t cb_nr_mmap; /* Number of mmaps */ 6654fe6a946SDavid Howells unsigned int cb_fs_s_break; /* Mass server break counter (cell->fs_s_break) */ 666c435ee34SDavid Howells unsigned int cb_s_break; /* Mass break counter on ->server */ 66768251f0aSDavid Howells unsigned int cb_v_break; /* Mass break counter on ->volume */ 668c435ee34SDavid Howells unsigned int cb_break; /* Break counter on vnode */ 66920325960SDavid Howells seqlock_t cb_lock; /* Lock for ->cb_server, ->status, ->cb_*break */ 670c435ee34SDavid Howells 671c435ee34SDavid Howells time64_t cb_expires_at; /* time at which callback expires */ 67208e0e7c8SDavid Howells }; 67308e0e7c8SDavid Howells 67412bdcf33SDavid Howells static inline struct fscache_cookie *afs_vnode_cache(struct afs_vnode *vnode) 67512bdcf33SDavid Howells { 67612bdcf33SDavid Howells #ifdef CONFIG_AFS_FSCACHE 67712bdcf33SDavid Howells return vnode->cache; 67812bdcf33SDavid Howells #else 67912bdcf33SDavid Howells return NULL; 68012bdcf33SDavid Howells #endif 68112bdcf33SDavid Howells } 68212bdcf33SDavid Howells 68300d3b7a4SDavid Howells /* 68400d3b7a4SDavid Howells * cached security record for one user's attempt to access a vnode 68500d3b7a4SDavid Howells */ 68600d3b7a4SDavid Howells struct afs_permit { 68700d3b7a4SDavid Howells struct key *key; /* RxRPC ticket holding a security context */ 688be080a6fSDavid Howells afs_access_t access; /* CallerAccess value for this key */ 68900d3b7a4SDavid Howells }; 69000d3b7a4SDavid Howells 69100d3b7a4SDavid Howells /* 692be080a6fSDavid Howells * Immutable cache of CallerAccess records from attempts to access vnodes. 693be080a6fSDavid Howells * These may be shared between multiple vnodes. 69400d3b7a4SDavid Howells */ 69500d3b7a4SDavid Howells struct afs_permits { 696be080a6fSDavid Howells struct rcu_head rcu; 697be080a6fSDavid Howells struct hlist_node hash_node; /* Link in hash */ 698be080a6fSDavid Howells unsigned long h; /* Hash value for this permit list */ 699be080a6fSDavid Howells refcount_t usage; 700be080a6fSDavid Howells unsigned short nr_permits; /* Number of records */ 701be080a6fSDavid Howells bool invalidated; /* Invalidated due to key change */ 702be080a6fSDavid Howells struct afs_permit permits[]; /* List of permits sorted by key pointer */ 70300d3b7a4SDavid Howells }; 70400d3b7a4SDavid Howells 705b908fe6bSDavid Howells /* 7064584ae96SDavid Howells * Error prioritisation and accumulation. 7074584ae96SDavid Howells */ 7084584ae96SDavid Howells struct afs_error { 7094584ae96SDavid Howells short error; /* Accumulated error */ 7104584ae96SDavid Howells bool responded; /* T if server responded */ 7114584ae96SDavid Howells }; 7124584ae96SDavid Howells 7134584ae96SDavid Howells /* 7148b2a464cSDavid Howells * Cursor for iterating over a server's address list. 7158b2a464cSDavid Howells */ 7168b2a464cSDavid Howells struct afs_addr_cursor { 7178b2a464cSDavid Howells struct afs_addr_list *alist; /* Current address list (pins ref) */ 7183bf0fb6fSDavid Howells unsigned long tried; /* Tried addresses */ 7193bf0fb6fSDavid Howells signed char index; /* Current address */ 7208b2a464cSDavid Howells bool responded; /* T if the current address responded */ 721744bcd71SDavid Howells unsigned short nr_iterations; /* Number of address iterations */ 7223bf0fb6fSDavid Howells short error; 7233bf0fb6fSDavid Howells u32 abort_code; 7248b2a464cSDavid Howells }; 7258b2a464cSDavid Howells 7268b2a464cSDavid Howells /* 7270a5143f2SDavid Howells * Cursor for iterating over a set of volume location servers. 7280a5143f2SDavid Howells */ 7290a5143f2SDavid Howells struct afs_vl_cursor { 7300a5143f2SDavid Howells struct afs_addr_cursor ac; 7310a5143f2SDavid Howells struct afs_cell *cell; /* The cell we're querying */ 7320a5143f2SDavid Howells struct afs_vlserver_list *server_list; /* Current server list (pins ref) */ 7333bf0fb6fSDavid Howells struct afs_vlserver *server; /* Server on which this resides */ 7340a5143f2SDavid Howells struct key *key; /* Key for the server */ 7353bf0fb6fSDavid Howells unsigned long untried; /* Bitmask of untried servers */ 7363bf0fb6fSDavid Howells short index; /* Current server */ 7370a5143f2SDavid Howells short error; 7380a5143f2SDavid Howells unsigned short flags; 7390a5143f2SDavid Howells #define AFS_VL_CURSOR_STOP 0x0001 /* Set to cease iteration */ 7400a5143f2SDavid Howells #define AFS_VL_CURSOR_RETRY 0x0002 /* Set to do a retry */ 7410a5143f2SDavid Howells #define AFS_VL_CURSOR_RETRIED 0x0004 /* Set if started a retry */ 742744bcd71SDavid Howells unsigned short nr_iterations; /* Number of server iterations */ 7430a5143f2SDavid Howells }; 7440a5143f2SDavid Howells 7450a5143f2SDavid Howells /* 746e49c7b2fSDavid Howells * Fileserver operation methods. 747e49c7b2fSDavid Howells */ 748e49c7b2fSDavid Howells struct afs_operation_ops { 749e49c7b2fSDavid Howells void (*issue_afs_rpc)(struct afs_operation *op); 750e49c7b2fSDavid Howells void (*issue_yfs_rpc)(struct afs_operation *op); 751e49c7b2fSDavid Howells void (*success)(struct afs_operation *op); 752e49c7b2fSDavid Howells void (*aborted)(struct afs_operation *op); 753dc419184SDavid Howells void (*failed)(struct afs_operation *op); 754e49c7b2fSDavid Howells void (*edit_dir)(struct afs_operation *op); 755e49c7b2fSDavid Howells void (*put)(struct afs_operation *op); 756e49c7b2fSDavid Howells }; 757e49c7b2fSDavid Howells 758e49c7b2fSDavid Howells struct afs_vnode_param { 759e49c7b2fSDavid Howells struct afs_vnode *vnode; 760e49c7b2fSDavid Howells struct afs_fid fid; /* Fid to access */ 761e49c7b2fSDavid Howells struct afs_status_cb scb; /* Returned status and callback promise */ 762e49c7b2fSDavid Howells afs_dataversion_t dv_before; /* Data version before the call */ 763e49c7b2fSDavid Howells unsigned int cb_break_before; /* cb_break + cb_s_break before the call */ 764e49c7b2fSDavid Howells u8 dv_delta; /* Expected change in data version */ 765793fe82eSDavid Howells bool put_vnode:1; /* T if we have a ref on the vnode */ 766793fe82eSDavid Howells bool need_io_lock:1; /* T if we need the I/O lock on this */ 767793fe82eSDavid Howells bool update_ctime:1; /* Need to update the ctime */ 768793fe82eSDavid Howells bool set_size:1; /* Must update i_size */ 769b6489a49SDavid Howells bool op_unlinked:1; /* True if file was unlinked by op */ 770a9e5c87cSDavid Howells bool speculative:1; /* T if speculative status fetch (no vnode lock) */ 77122650f14SDavid Howells bool modification:1; /* Set if the content gets modified */ 772e49c7b2fSDavid Howells }; 773e49c7b2fSDavid Howells 774e49c7b2fSDavid Howells /* 775e49c7b2fSDavid Howells * Fileserver operation wrapper, handling server and address rotation 776e49c7b2fSDavid Howells * asynchronously. May make simultaneous calls to multiple servers. 7778b2a464cSDavid Howells */ 778a310082fSDavid Howells struct afs_operation { 779e49c7b2fSDavid Howells struct afs_net *net; /* Network namespace */ 780e49c7b2fSDavid Howells struct key *key; /* Key for the cell */ 781a58823acSDavid Howells const struct afs_call_type *type; /* Type of call done */ 782e49c7b2fSDavid Howells const struct afs_operation_ops *ops; 783e49c7b2fSDavid Howells 784e49c7b2fSDavid Howells /* Parameters/results for the operation */ 785e49c7b2fSDavid Howells struct afs_volume *volume; /* Volume being accessed */ 786e49c7b2fSDavid Howells struct afs_vnode_param file[2]; 787e49c7b2fSDavid Howells struct afs_vnode_param *more_files; 788e49c7b2fSDavid Howells struct afs_volsync volsync; 789e49c7b2fSDavid Howells struct dentry *dentry; /* Dentry to be altered */ 790e49c7b2fSDavid Howells struct dentry *dentry_2; /* Second dentry to be altered */ 791e49c7b2fSDavid Howells struct timespec64 mtime; /* Modification time to record */ 792da8d0755SDavid Howells struct timespec64 ctime; /* Change time to set */ 793e49c7b2fSDavid Howells short nr_files; /* Number of entries in file[], more_files */ 794e49c7b2fSDavid Howells short error; 795e49c7b2fSDavid Howells unsigned int debug_id; 796e49c7b2fSDavid Howells 797e49c7b2fSDavid Howells unsigned int cb_v_break; /* Volume break counter before op */ 798e49c7b2fSDavid Howells unsigned int cb_s_break; /* Server break counter before op */ 799e49c7b2fSDavid Howells 800e49c7b2fSDavid Howells union { 801e49c7b2fSDavid Howells struct { 802e49c7b2fSDavid Howells int which; /* Which ->file[] to fetch for */ 803e49c7b2fSDavid Howells } fetch_status; 804e49c7b2fSDavid Howells struct { 805e49c7b2fSDavid Howells int reason; /* enum afs_edit_dir_reason */ 806e49c7b2fSDavid Howells mode_t mode; 807e49c7b2fSDavid Howells const char *symlink; 808e49c7b2fSDavid Howells } create; 809e49c7b2fSDavid Howells struct { 810e49c7b2fSDavid Howells bool need_rehash; 811e49c7b2fSDavid Howells } unlink; 812e49c7b2fSDavid Howells struct { 813e49c7b2fSDavid Howells struct dentry *rehash; 814e49c7b2fSDavid Howells struct dentry *tmp; 815e49c7b2fSDavid Howells bool new_negative; 816e49c7b2fSDavid Howells } rename; 817e49c7b2fSDavid Howells struct { 818e49c7b2fSDavid Howells struct afs_read *req; 819e49c7b2fSDavid Howells } fetch; 820e49c7b2fSDavid Howells struct { 821e49c7b2fSDavid Howells afs_lock_type_t type; 822e49c7b2fSDavid Howells } lock; 823e49c7b2fSDavid Howells struct { 824bd80d8a8SDavid Howells struct iov_iter *write_iter; 825bd80d8a8SDavid Howells loff_t pos; 826bd80d8a8SDavid Howells loff_t size; 827bd80d8a8SDavid Howells loff_t i_size; 828d383e346SDavid Howells bool laundering; /* Laundering page, PG_writeback not set */ 829e49c7b2fSDavid Howells } store; 830e49c7b2fSDavid Howells struct { 831e49c7b2fSDavid Howells struct iattr *attr; 832ec0fa0b6SDavid Howells loff_t old_i_size; 833e49c7b2fSDavid Howells } setattr; 834e49c7b2fSDavid Howells struct afs_acl *acl; 835e49c7b2fSDavid Howells struct yfs_acl *yacl; 836e49c7b2fSDavid Howells struct { 837e49c7b2fSDavid Howells struct afs_volume_status vs; 838e49c7b2fSDavid Howells struct kstatfs *buf; 839e49c7b2fSDavid Howells } volstatus; 840e49c7b2fSDavid Howells }; 841e49c7b2fSDavid Howells 842e49c7b2fSDavid Howells /* Fileserver iteration state */ 8438b2a464cSDavid Howells struct afs_addr_cursor ac; 844d2ddc776SDavid Howells struct afs_server_list *server_list; /* Current server list (pins ref) */ 84520325960SDavid Howells struct afs_server *server; /* Server we're using (ref pinned by server_list) */ 846e49c7b2fSDavid Howells struct afs_call *call; 8473bf0fb6fSDavid Howells unsigned long untried; /* Bitmask of untried servers */ 8483bf0fb6fSDavid Howells short index; /* Current server */ 849e49c7b2fSDavid Howells unsigned short nr_iterations; /* Number of server iterations */ 850e49c7b2fSDavid Howells 851e49c7b2fSDavid Howells unsigned int flags; 852a310082fSDavid Howells #define AFS_OPERATION_STOP 0x0001 /* Set to cease iteration */ 853a310082fSDavid Howells #define AFS_OPERATION_VBUSY 0x0002 /* Set if seen VBUSY */ 854a310082fSDavid Howells #define AFS_OPERATION_VMOVED 0x0004 /* Set if seen VMOVED */ 855a310082fSDavid Howells #define AFS_OPERATION_VNOVOL 0x0008 /* Set if seen VNOVOL */ 856a310082fSDavid Howells #define AFS_OPERATION_CUR_ONLY 0x0010 /* Set if current server only (file lock held) */ 857a310082fSDavid Howells #define AFS_OPERATION_NO_VSLEEP 0x0020 /* Set to prevent sleep on VBUSY, VOFFLINE, ... */ 858e49c7b2fSDavid Howells #define AFS_OPERATION_UNINTR 0x0040 /* Set if op is uninterruptible */ 859e49c7b2fSDavid Howells #define AFS_OPERATION_DOWNGRADE 0x0080 /* Set to retry with downgraded opcode */ 860e49c7b2fSDavid Howells #define AFS_OPERATION_LOCK_0 0x0100 /* Set if have io_lock on file[0] */ 861e49c7b2fSDavid Howells #define AFS_OPERATION_LOCK_1 0x0200 /* Set if have io_lock on file[1] */ 8628409f67bSDavid Howells #define AFS_OPERATION_TRIED_ALL 0x0400 /* Set if we've tried all the fileservers */ 8638409f67bSDavid Howells #define AFS_OPERATION_RETRY_SERVER 0x0800 /* Set if we should retry the current server */ 864b6489a49SDavid Howells #define AFS_OPERATION_DIR_CONFLICT 0x1000 /* Set if we detected a 3rd-party dir change */ 8658b2a464cSDavid Howells }; 8668b2a464cSDavid Howells 867402cb8ddSDavid Howells /* 868402cb8ddSDavid Howells * Cache auxiliary data. 869402cb8ddSDavid Howells */ 870402cb8ddSDavid Howells struct afs_vnode_cache_aux { 871523d27cdSDavid Howells __be64 data_version; 872402cb8ddSDavid Howells } __packed; 873402cb8ddSDavid Howells 874523d27cdSDavid Howells static inline void afs_set_cache_aux(struct afs_vnode *vnode, 875523d27cdSDavid Howells struct afs_vnode_cache_aux *aux) 876523d27cdSDavid Howells { 877523d27cdSDavid Howells aux->data_version = cpu_to_be64(vnode->status.data_version); 878523d27cdSDavid Howells } 879523d27cdSDavid Howells 880523d27cdSDavid Howells static inline void afs_invalidate_cache(struct afs_vnode *vnode, unsigned int flags) 881523d27cdSDavid Howells { 882523d27cdSDavid Howells struct afs_vnode_cache_aux aux; 883523d27cdSDavid Howells 884523d27cdSDavid Howells afs_set_cache_aux(vnode, &aux); 885523d27cdSDavid Howells fscache_invalidate(afs_vnode_cache(vnode), &aux, 886523d27cdSDavid Howells i_size_read(&vnode->vfs_inode), flags); 887523d27cdSDavid Howells } 888523d27cdSDavid Howells 889185f0c70SDavid Howells /* 89078525c74SDavid Howells * We use folio->private to hold the amount of the folio that we've written to, 891185f0c70SDavid Howells * splitting the field into two parts. However, we need to represent a range 89278525c74SDavid Howells * 0...FOLIO_SIZE, so we reduce the resolution if the size of the folio 8932d9900f2SDavid Howells * exceeds what we can encode. 894185f0c70SDavid Howells */ 89565dd2d60SDavid Howells #ifdef CONFIG_64BIT 89678525c74SDavid Howells #define __AFS_FOLIO_PRIV_MASK 0x7fffffffUL 89778525c74SDavid Howells #define __AFS_FOLIO_PRIV_SHIFT 32 89878525c74SDavid Howells #define __AFS_FOLIO_PRIV_MMAPPED 0x80000000UL 899185f0c70SDavid Howells #else 90078525c74SDavid Howells #define __AFS_FOLIO_PRIV_MASK 0x7fffUL 90178525c74SDavid Howells #define __AFS_FOLIO_PRIV_SHIFT 16 90278525c74SDavid Howells #define __AFS_FOLIO_PRIV_MMAPPED 0x8000UL 903185f0c70SDavid Howells #endif 904185f0c70SDavid Howells 90578525c74SDavid Howells static inline unsigned int afs_folio_dirty_resolution(struct folio *folio) 9062d9900f2SDavid Howells { 90778525c74SDavid Howells int shift = folio_shift(folio) - (__AFS_FOLIO_PRIV_SHIFT - 1); 9082d9900f2SDavid Howells return (shift > 0) ? shift : 0; 9092d9900f2SDavid Howells } 9102d9900f2SDavid Howells 91178525c74SDavid Howells static inline size_t afs_folio_dirty_from(struct folio *folio, unsigned long priv) 912185f0c70SDavid Howells { 91378525c74SDavid Howells unsigned long x = priv & __AFS_FOLIO_PRIV_MASK; 9142d9900f2SDavid Howells 9152d9900f2SDavid Howells /* The lower bound is inclusive */ 91678525c74SDavid Howells return x << afs_folio_dirty_resolution(folio); 917185f0c70SDavid Howells } 918185f0c70SDavid Howells 91978525c74SDavid Howells static inline size_t afs_folio_dirty_to(struct folio *folio, unsigned long priv) 920185f0c70SDavid Howells { 92178525c74SDavid Howells unsigned long x = (priv >> __AFS_FOLIO_PRIV_SHIFT) & __AFS_FOLIO_PRIV_MASK; 9222d9900f2SDavid Howells 9232d9900f2SDavid Howells /* The upper bound is immediately beyond the region */ 92478525c74SDavid Howells return (x + 1) << afs_folio_dirty_resolution(folio); 925185f0c70SDavid Howells } 926185f0c70SDavid Howells 92778525c74SDavid Howells static inline unsigned long afs_folio_dirty(struct folio *folio, size_t from, size_t to) 928185f0c70SDavid Howells { 92978525c74SDavid Howells unsigned int res = afs_folio_dirty_resolution(folio); 9302d9900f2SDavid Howells from >>= res; 9312d9900f2SDavid Howells to = (to - 1) >> res; 93278525c74SDavid Howells return (to << __AFS_FOLIO_PRIV_SHIFT) | from; 933185f0c70SDavid Howells } 934185f0c70SDavid Howells 93578525c74SDavid Howells static inline unsigned long afs_folio_dirty_mmapped(unsigned long priv) 936f86726a6SDavid Howells { 93778525c74SDavid Howells return priv | __AFS_FOLIO_PRIV_MMAPPED; 938f86726a6SDavid Howells } 939f86726a6SDavid Howells 94078525c74SDavid Howells static inline bool afs_is_folio_dirty_mmapped(unsigned long priv) 941f86726a6SDavid Howells { 94278525c74SDavid Howells return priv & __AFS_FOLIO_PRIV_MMAPPED; 943f86726a6SDavid Howells } 944f86726a6SDavid Howells 94598bf40cdSDavid Howells #include <trace/events/afs.h> 94698bf40cdSDavid Howells 94708e0e7c8SDavid Howells /*****************************************************************************/ 94808e0e7c8SDavid Howells /* 9498b2a464cSDavid Howells * addr_list.c 9508b2a464cSDavid Howells */ 9518b2a464cSDavid Howells static inline struct afs_addr_list *afs_get_addrlist(struct afs_addr_list *alist) 9528b2a464cSDavid Howells { 9538b2a464cSDavid Howells if (alist) 9548b2a464cSDavid Howells refcount_inc(&alist->usage); 9558b2a464cSDavid Howells return alist; 9568b2a464cSDavid Howells } 9578b2a464cSDavid Howells extern struct afs_addr_list *afs_alloc_addrlist(unsigned int, 9588b2a464cSDavid Howells unsigned short, 9598b2a464cSDavid Howells unsigned short); 9608b2a464cSDavid Howells extern void afs_put_addrlist(struct afs_addr_list *); 9610a5143f2SDavid Howells extern struct afs_vlserver_list *afs_parse_text_addrs(struct afs_net *, 9620a5143f2SDavid Howells const char *, size_t, char, 9638b2a464cSDavid Howells unsigned short, unsigned short); 9640a5143f2SDavid Howells extern struct afs_vlserver_list *afs_dns_query(struct afs_cell *, time64_t *); 9658b2a464cSDavid Howells extern bool afs_iterate_addresses(struct afs_addr_cursor *); 9668b2a464cSDavid Howells extern int afs_end_cursor(struct afs_addr_cursor *); 9678b2a464cSDavid Howells 968bf99a53cSDavid Howells extern void afs_merge_fs_addr4(struct afs_addr_list *, __be32, u16); 969bf99a53cSDavid Howells extern void afs_merge_fs_addr6(struct afs_addr_list *, __be32 *, u16); 970d2ddc776SDavid Howells 9718b2a464cSDavid Howells /* 9729b3f26c9SDavid Howells * cache.c 9739b3f26c9SDavid Howells */ 9749b3f26c9SDavid Howells #ifdef CONFIG_AFS_FSCACHE 9759b3f26c9SDavid Howells extern struct fscache_netfs afs_cache_netfs; 9769b3f26c9SDavid Howells #endif 9779b3f26c9SDavid Howells 9789b3f26c9SDavid Howells /* 97908e0e7c8SDavid Howells * callback.c 98008e0e7c8SDavid Howells */ 9816e0e99d5SDavid Howells extern void afs_invalidate_mmap_work(struct work_struct *); 9826e0e99d5SDavid Howells extern void afs_server_init_callback_work(struct work_struct *work); 98308e0e7c8SDavid Howells extern void afs_init_callback_state(struct afs_server *); 984051d2525SDavid Howells extern void __afs_break_callback(struct afs_vnode *, enum afs_cb_break_reason); 985051d2525SDavid Howells extern void afs_break_callback(struct afs_vnode *, enum afs_cb_break_reason); 9865cf9dd55SDavid Howells extern void afs_break_callbacks(struct afs_server *, size_t, struct afs_callback_break *); 987c435ee34SDavid Howells 98868251f0aSDavid Howells static inline unsigned int afs_calc_vnode_cb_break(struct afs_vnode *vnode) 98968251f0aSDavid Howells { 990eeba1e9cSDavid Howells return vnode->cb_break + vnode->cb_v_break; 99168251f0aSDavid Howells } 99268251f0aSDavid Howells 99318ac6185SDavid Howells static inline bool afs_cb_is_broken(unsigned int cb_break, 99420325960SDavid Howells const struct afs_vnode *vnode) 99568251f0aSDavid Howells { 99620325960SDavid Howells return cb_break != (vnode->cb_break + vnode->volume->cb_v_break); 99768251f0aSDavid Howells } 99868251f0aSDavid Howells 9991da177e4SLinus Torvalds /* 10001da177e4SLinus Torvalds * cell.c 10011da177e4SLinus Torvalds */ 1002989782dcSDavid Howells extern int afs_cell_init(struct afs_net *, const char *); 1003dca54a7bSDavid Howells extern struct afs_cell *afs_find_cell(struct afs_net *, const char *, unsigned, 1004dca54a7bSDavid Howells enum afs_cell_trace); 1005989782dcSDavid Howells extern struct afs_cell *afs_lookup_cell(struct afs_net *, const char *, unsigned, 1006989782dcSDavid Howells const char *, bool); 1007dca54a7bSDavid Howells extern struct afs_cell *afs_use_cell(struct afs_cell *, enum afs_cell_trace); 1008dca54a7bSDavid Howells extern void afs_unuse_cell(struct afs_net *, struct afs_cell *, enum afs_cell_trace); 1009dca54a7bSDavid Howells extern struct afs_cell *afs_get_cell(struct afs_cell *, enum afs_cell_trace); 1010dca54a7bSDavid Howells extern void afs_see_cell(struct afs_cell *, enum afs_cell_trace); 1011dca54a7bSDavid Howells extern void afs_put_cell(struct afs_cell *, enum afs_cell_trace); 1012dca54a7bSDavid Howells extern void afs_queue_cell(struct afs_cell *, enum afs_cell_trace); 1013989782dcSDavid Howells extern void afs_manage_cells(struct work_struct *); 1014989782dcSDavid Howells extern void afs_cells_timer(struct timer_list *); 1015f044c884SDavid Howells extern void __net_exit afs_cell_purge(struct afs_net *); 101608e0e7c8SDavid Howells 101708e0e7c8SDavid Howells /* 101808e0e7c8SDavid Howells * cmservice.c 101908e0e7c8SDavid Howells */ 102008e0e7c8SDavid Howells extern bool afs_cm_incoming_call(struct afs_call *); 102108e0e7c8SDavid Howells 10221da177e4SLinus Torvalds /* 10231da177e4SLinus Torvalds * dir.c 10241da177e4SLinus Torvalds */ 10254b6f5d20SArjan van de Ven extern const struct file_operations afs_dir_file_operations; 10264d673da1SDavid Howells extern const struct inode_operations afs_dir_inode_operations; 1027f3ddee8dSDavid Howells extern const struct address_space_operations afs_dir_aops; 10284d673da1SDavid Howells extern const struct dentry_operations afs_fs_dentry_operations; 10294d673da1SDavid Howells 103066c7e1d3SDavid Howells extern void afs_d_release(struct dentry *); 1031728279a5SDavid Howells extern void afs_check_for_remote_deletion(struct afs_operation *); 103266c7e1d3SDavid Howells 103366c7e1d3SDavid Howells /* 103463a4681fSDavid Howells * dir_edit.c 103563a4681fSDavid Howells */ 103663a4681fSDavid Howells extern void afs_edit_dir_add(struct afs_vnode *, struct qstr *, struct afs_fid *, 103763a4681fSDavid Howells enum afs_edit_dir_reason); 103863a4681fSDavid Howells extern void afs_edit_dir_remove(struct afs_vnode *, struct qstr *, enum afs_edit_dir_reason); 103963a4681fSDavid Howells 104063a4681fSDavid Howells /* 104179ddbfa5SDavid Howells * dir_silly.c 104279ddbfa5SDavid Howells */ 104379ddbfa5SDavid Howells extern int afs_sillyrename(struct afs_vnode *, struct afs_vnode *, 104479ddbfa5SDavid Howells struct dentry *, struct key *); 104579ddbfa5SDavid Howells extern int afs_silly_iput(struct dentry *, struct inode *); 104679ddbfa5SDavid Howells 104779ddbfa5SDavid Howells /* 104866c7e1d3SDavid Howells * dynroot.c 104966c7e1d3SDavid Howells */ 105066c7e1d3SDavid Howells extern const struct inode_operations afs_dynroot_inode_operations; 105166c7e1d3SDavid Howells extern const struct dentry_operations afs_dynroot_dentry_operations; 105266c7e1d3SDavid Howells 105366c7e1d3SDavid Howells extern struct inode *afs_try_auto_mntpt(struct dentry *, struct inode *); 10540da0b7fdSDavid Howells extern int afs_dynroot_mkdir(struct afs_net *, struct afs_cell *); 10550da0b7fdSDavid Howells extern void afs_dynroot_rmdir(struct afs_net *, struct afs_cell *); 10560da0b7fdSDavid Howells extern int afs_dynroot_populate(struct super_block *); 10570da0b7fdSDavid Howells extern void afs_dynroot_depopulate(struct super_block *); 10581da177e4SLinus Torvalds 10591da177e4SLinus Torvalds /* 10601da177e4SLinus Torvalds * file.c 10611da177e4SLinus Torvalds */ 106275bd228dSDavid Howells extern const struct address_space_operations afs_file_aops; 106375bd228dSDavid Howells extern const struct address_space_operations afs_symlink_aops; 1064754661f1SArjan van de Ven extern const struct inode_operations afs_file_inode_operations; 106500d3b7a4SDavid Howells extern const struct file_operations afs_file_operations; 10663003bbd0SDavid Howells extern const struct netfs_read_request_ops afs_req_ops; 106700d3b7a4SDavid Howells 10684343d008SDavid Howells extern int afs_cache_wb_key(struct afs_vnode *, struct afs_file *); 10694343d008SDavid Howells extern void afs_put_wb_key(struct afs_wb_key *); 107000d3b7a4SDavid Howells extern int afs_open(struct inode *, struct file *); 107100d3b7a4SDavid Howells extern int afs_release(struct inode *, struct file *); 1072c69bf479SDavid Howells extern int afs_fetch_data(struct afs_vnode *, struct afs_read *); 10735cbf0398SDavid Howells extern struct afs_read *afs_alloc_read(gfp_t); 1074196ee9cdSDavid Howells extern void afs_put_read(struct afs_read *); 1075c7f75ef3SDavid Howells extern int afs_write_inode(struct inode *, struct writeback_control *); 10761da177e4SLinus Torvalds 1077d4438a25SDavid Howells static inline struct afs_read *afs_get_read(struct afs_read *req) 1078d4438a25SDavid Howells { 1079d4438a25SDavid Howells refcount_inc(&req->usage); 1080d4438a25SDavid Howells return req; 1081d4438a25SDavid Howells } 1082d4438a25SDavid Howells 10831da177e4SLinus Torvalds /* 1084e8d6c554SDavid Howells * flock.c 1085e8d6c554SDavid Howells */ 1086f044c884SDavid Howells extern struct workqueue_struct *afs_lock_manager; 1087f044c884SDavid Howells 1088a690f60aSDavid Howells extern void afs_lock_op_done(struct afs_call *); 1089e8d6c554SDavid Howells extern void afs_lock_work(struct work_struct *); 1090e8d6c554SDavid Howells extern void afs_lock_may_be_available(struct afs_vnode *); 1091e8d6c554SDavid Howells extern int afs_lock(struct file *, int, struct file_lock *); 1092e8d6c554SDavid Howells extern int afs_flock(struct file *, int, struct file_lock *); 1093e8d6c554SDavid Howells 1094e8d6c554SDavid Howells /* 109508e0e7c8SDavid Howells * fsclient.c 109608e0e7c8SDavid Howells */ 1097e49c7b2fSDavid Howells extern void afs_fs_fetch_status(struct afs_operation *); 1098e49c7b2fSDavid Howells extern void afs_fs_fetch_data(struct afs_operation *); 1099e49c7b2fSDavid Howells extern void afs_fs_create_file(struct afs_operation *); 1100e49c7b2fSDavid Howells extern void afs_fs_make_dir(struct afs_operation *); 1101e49c7b2fSDavid Howells extern void afs_fs_remove_file(struct afs_operation *); 1102e49c7b2fSDavid Howells extern void afs_fs_remove_dir(struct afs_operation *); 1103e49c7b2fSDavid Howells extern void afs_fs_link(struct afs_operation *); 1104e49c7b2fSDavid Howells extern void afs_fs_symlink(struct afs_operation *); 1105e49c7b2fSDavid Howells extern void afs_fs_rename(struct afs_operation *); 1106e49c7b2fSDavid Howells extern void afs_fs_store_data(struct afs_operation *); 1107e49c7b2fSDavid Howells extern void afs_fs_setattr(struct afs_operation *); 1108e49c7b2fSDavid Howells extern void afs_fs_get_volume_status(struct afs_operation *); 1109e49c7b2fSDavid Howells extern void afs_fs_set_lock(struct afs_operation *); 1110e49c7b2fSDavid Howells extern void afs_fs_extend_lock(struct afs_operation *); 1111e49c7b2fSDavid Howells extern void afs_fs_release_lock(struct afs_operation *); 1112d2ddc776SDavid Howells extern int afs_fs_give_up_all_callbacks(struct afs_net *, struct afs_server *, 1113d2ddc776SDavid Howells struct afs_addr_cursor *, struct key *); 1114f6cbb368SDavid Howells extern bool afs_fs_get_capabilities(struct afs_net *, struct afs_server *, 1115f6cbb368SDavid Howells struct afs_addr_cursor *, struct key *); 1116e49c7b2fSDavid Howells extern void afs_fs_inline_bulk_status(struct afs_operation *); 111708e0e7c8SDavid Howells 1118260f082bSDavid Howells struct afs_acl { 1119260f082bSDavid Howells u32 size; 1120260f082bSDavid Howells u8 data[]; 1121260f082bSDavid Howells }; 1122260f082bSDavid Howells 1123e49c7b2fSDavid Howells extern void afs_fs_fetch_acl(struct afs_operation *); 1124e49c7b2fSDavid Howells extern void afs_fs_store_acl(struct afs_operation *); 1125e49c7b2fSDavid Howells 1126e49c7b2fSDavid Howells /* 1127e49c7b2fSDavid Howells * fs_operation.c 1128e49c7b2fSDavid Howells */ 1129e49c7b2fSDavid Howells extern struct afs_operation *afs_alloc_operation(struct key *, struct afs_volume *); 1130e49c7b2fSDavid Howells extern int afs_put_operation(struct afs_operation *); 1131e49c7b2fSDavid Howells extern bool afs_begin_vnode_operation(struct afs_operation *); 1132e49c7b2fSDavid Howells extern void afs_wait_for_operation(struct afs_operation *); 1133e49c7b2fSDavid Howells extern int afs_do_sync_operation(struct afs_operation *); 1134e49c7b2fSDavid Howells 1135e49c7b2fSDavid Howells static inline void afs_op_nomem(struct afs_operation *op) 1136e49c7b2fSDavid Howells { 1137e49c7b2fSDavid Howells op->error = -ENOMEM; 1138e49c7b2fSDavid Howells } 1139e49c7b2fSDavid Howells 1140e49c7b2fSDavid Howells static inline void afs_op_set_vnode(struct afs_operation *op, unsigned int n, 1141e49c7b2fSDavid Howells struct afs_vnode *vnode) 1142e49c7b2fSDavid Howells { 1143e49c7b2fSDavid Howells op->file[n].vnode = vnode; 1144e49c7b2fSDavid Howells op->file[n].need_io_lock = true; 1145e49c7b2fSDavid Howells } 1146e49c7b2fSDavid Howells 1147e49c7b2fSDavid Howells static inline void afs_op_set_fid(struct afs_operation *op, unsigned int n, 1148e49c7b2fSDavid Howells const struct afs_fid *fid) 1149e49c7b2fSDavid Howells { 1150e49c7b2fSDavid Howells op->file[n].fid = *fid; 1151e49c7b2fSDavid Howells } 1152260f082bSDavid Howells 115308e0e7c8SDavid Howells /* 11543bf0fb6fSDavid Howells * fs_probe.c 11553bf0fb6fSDavid Howells */ 11563bf0fb6fSDavid Howells extern void afs_fileserver_probe_result(struct afs_call *); 1157f6cbb368SDavid Howells extern void afs_fs_probe_fileserver(struct afs_net *, struct afs_server *, struct key *, bool); 11583bf0fb6fSDavid Howells extern int afs_wait_for_fs_probes(struct afs_server_list *, unsigned long); 11598409f67bSDavid Howells extern void afs_probe_fileserver(struct afs_net *, struct afs_server *); 1160f6cbb368SDavid Howells extern void afs_fs_probe_dispatcher(struct work_struct *); 11618409f67bSDavid Howells extern int afs_wait_for_one_fs_probe(struct afs_server *, bool); 11625481fc6eSDavid Howells extern void afs_fs_probe_cleanup(struct afs_net *); 11633bf0fb6fSDavid Howells 11643bf0fb6fSDavid Howells /* 11651da177e4SLinus Torvalds * inode.c 11661da177e4SLinus Torvalds */ 1167b6489a49SDavid Howells extern const struct afs_operation_ops afs_fetch_status_operation; 1168b6489a49SDavid Howells 1169e49c7b2fSDavid Howells extern void afs_vnode_commit_status(struct afs_operation *, struct afs_vnode_param *); 1170a58823acSDavid Howells extern int afs_fetch_status(struct afs_vnode *, struct key *, bool, afs_access_t *); 1171e49c7b2fSDavid Howells extern int afs_ilookup5_test_by_fid(struct inode *, void *); 11724d673da1SDavid Howells extern struct inode *afs_iget_pseudo_dir(struct super_block *, bool); 1173e49c7b2fSDavid Howells extern struct inode *afs_iget(struct afs_operation *, struct afs_vnode_param *); 1174e49c7b2fSDavid Howells extern struct inode *afs_root_iget(struct super_block *, struct key *); 1175c925bd0aSDavid Howells extern bool afs_check_validity(struct afs_vnode *); 1176260a9803SDavid Howells extern int afs_validate(struct afs_vnode *, struct key *); 1177549c7297SChristian Brauner extern int afs_getattr(struct user_namespace *mnt_userns, const struct path *, 1178549c7297SChristian Brauner struct kstat *, u32, unsigned int); 1179549c7297SChristian Brauner extern int afs_setattr(struct user_namespace *mnt_userns, struct dentry *, struct iattr *); 1180b57922d9SAl Viro extern void afs_evict_inode(struct inode *); 1181bec5eb61Swanglei extern int afs_drop_inode(struct inode *); 11821da177e4SLinus Torvalds 11831da177e4SLinus Torvalds /* 11841da177e4SLinus Torvalds * main.c 11851da177e4SLinus Torvalds */ 11860ad53eeeSTejun Heo extern struct workqueue_struct *afs_wq; 11875b86d4ffSDavid Howells extern int afs_net_id; 11885b86d4ffSDavid Howells 11895b86d4ffSDavid Howells static inline struct afs_net *afs_net(struct net *net) 11905b86d4ffSDavid Howells { 11915b86d4ffSDavid Howells return net_generic(net, afs_net_id); 11925b86d4ffSDavid Howells } 11935b86d4ffSDavid Howells 11945b86d4ffSDavid Howells static inline struct afs_net *afs_sb2net(struct super_block *sb) 11955b86d4ffSDavid Howells { 11965b86d4ffSDavid Howells return afs_net(AFS_FS_S(sb)->net_ns); 11975b86d4ffSDavid Howells } 1198f044c884SDavid Howells 1199f044c884SDavid Howells static inline struct afs_net *afs_d2net(struct dentry *dentry) 1200f044c884SDavid Howells { 12015b86d4ffSDavid Howells return afs_sb2net(dentry->d_sb); 1202f044c884SDavid Howells } 1203f044c884SDavid Howells 1204f044c884SDavid Howells static inline struct afs_net *afs_i2net(struct inode *inode) 1205f044c884SDavid Howells { 12065b86d4ffSDavid Howells return afs_sb2net(inode->i_sb); 1207f044c884SDavid Howells } 1208f044c884SDavid Howells 1209f044c884SDavid Howells static inline struct afs_net *afs_v2net(struct afs_vnode *vnode) 1210f044c884SDavid Howells { 12115b86d4ffSDavid Howells return afs_i2net(&vnode->vfs_inode); 1212f044c884SDavid Howells } 1213f044c884SDavid Howells 1214f044c884SDavid Howells static inline struct afs_net *afs_sock2net(struct sock *sk) 1215f044c884SDavid Howells { 12165b86d4ffSDavid Howells return net_generic(sock_net(sk), afs_net_id); 1217f044c884SDavid Howells } 12181da177e4SLinus Torvalds 1219d55b4da4SDavid Howells static inline void __afs_stat(atomic_t *s) 1220d55b4da4SDavid Howells { 1221d55b4da4SDavid Howells atomic_inc(s); 1222d55b4da4SDavid Howells } 1223d55b4da4SDavid Howells 1224d55b4da4SDavid Howells #define afs_stat_v(vnode, n) __afs_stat(&afs_v2net(vnode)->n) 1225d55b4da4SDavid Howells 12261da177e4SLinus Torvalds /* 122708e0e7c8SDavid Howells * misc.c 122808e0e7c8SDavid Howells */ 122908e0e7c8SDavid Howells extern int afs_abort_to_error(u32); 12304584ae96SDavid Howells extern void afs_prioritise_error(struct afs_error *, int, u32); 123108e0e7c8SDavid Howells 123208e0e7c8SDavid Howells /* 12331da177e4SLinus Torvalds * mntpt.c 12341da177e4SLinus Torvalds */ 1235754661f1SArjan van de Ven extern const struct inode_operations afs_mntpt_inode_operations; 1236bec5eb61Swanglei extern const struct inode_operations afs_autocell_inode_operations; 12374b6f5d20SArjan van de Ven extern const struct file_operations afs_mntpt_file_operations; 12381da177e4SLinus Torvalds 1239d18610b0SDavid Howells extern struct vfsmount *afs_d_automount(struct path *); 124008e0e7c8SDavid Howells extern void afs_mntpt_kill_timer(void); 12411da177e4SLinus Torvalds 12421da177e4SLinus Torvalds /* 12431da177e4SLinus Torvalds * proc.c 12441da177e4SLinus Torvalds */ 1245b6cfbecaSDavid Howells #ifdef CONFIG_PROC_FS 1246f044c884SDavid Howells extern int __net_init afs_proc_init(struct afs_net *); 1247f044c884SDavid Howells extern void __net_exit afs_proc_cleanup(struct afs_net *); 12485b86d4ffSDavid Howells extern int afs_proc_cell_setup(struct afs_cell *); 12495b86d4ffSDavid Howells extern void afs_proc_cell_remove(struct afs_cell *); 12506f8880d8SDavid Howells extern void afs_put_sysnames(struct afs_sysnames *); 1251b6cfbecaSDavid Howells #else 1252b6cfbecaSDavid Howells static inline int afs_proc_init(struct afs_net *net) { return 0; } 1253b6cfbecaSDavid Howells static inline void afs_proc_cleanup(struct afs_net *net) {} 1254b6cfbecaSDavid Howells static inline int afs_proc_cell_setup(struct afs_cell *cell) { return 0; } 1255b6cfbecaSDavid Howells static inline void afs_proc_cell_remove(struct afs_cell *cell) {} 1256b6cfbecaSDavid Howells static inline void afs_put_sysnames(struct afs_sysnames *sysnames) {} 1257b6cfbecaSDavid Howells #endif 12581da177e4SLinus Torvalds 125908e0e7c8SDavid Howells /* 1260d2ddc776SDavid Howells * rotate.c 1261d2ddc776SDavid Howells */ 1262a310082fSDavid Howells extern bool afs_select_fileserver(struct afs_operation *); 1263e49c7b2fSDavid Howells extern void afs_dump_edestaddrreq(const struct afs_operation *); 1264d2ddc776SDavid Howells 1265d2ddc776SDavid Howells /* 126608e0e7c8SDavid Howells * rxrpc.c 126708e0e7c8SDavid Howells */ 1268f044c884SDavid Howells extern struct workqueue_struct *afs_async_calls; 12698324f0bcSDavid Howells 1270f044c884SDavid Howells extern int __net_init afs_open_socket(struct afs_net *); 1271f044c884SDavid Howells extern void __net_exit afs_close_socket(struct afs_net *); 1272f044c884SDavid Howells extern void afs_charge_preallocation(struct work_struct *); 1273341f741fSDavid Howells extern void afs_put_call(struct afs_call *); 12740b9bf381SDavid Howells extern void afs_make_call(struct afs_addr_cursor *, struct afs_call *, gfp_t); 12750b9bf381SDavid Howells extern long afs_wait_for_call_to_complete(struct afs_call *, struct afs_addr_cursor *); 1276f044c884SDavid Howells extern struct afs_call *afs_alloc_flat_call(struct afs_net *, 1277f044c884SDavid Howells const struct afs_call_type *, 127808e0e7c8SDavid Howells size_t, size_t); 127908e0e7c8SDavid Howells extern void afs_flat_call_destructor(struct afs_call *); 128008e0e7c8SDavid Howells extern void afs_send_empty_reply(struct afs_call *); 1281b908fe6bSDavid Howells extern void afs_send_simple_reply(struct afs_call *, const void *, size_t); 128212bdcf33SDavid Howells extern int afs_extract_data(struct afs_call *, bool); 12837126ead9SDavid Howells extern int afs_protocol_error(struct afs_call *, enum afs_eproto_cause); 128408e0e7c8SDavid Howells 1285e49c7b2fSDavid Howells static inline void afs_make_op_call(struct afs_operation *op, struct afs_call *call, 1286e49c7b2fSDavid Howells gfp_t gfp) 128720b8391fSDavid Howells { 1288e49c7b2fSDavid Howells op->call = call; 1289a310082fSDavid Howells op->type = call->type; 1290e49c7b2fSDavid Howells call->op = op; 1291e49c7b2fSDavid Howells call->key = op->key; 1292e49c7b2fSDavid Howells call->intr = !(op->flags & AFS_OPERATION_UNINTR); 1293e49c7b2fSDavid Howells afs_make_call(&op->ac, call, gfp); 129420b8391fSDavid Howells } 129520b8391fSDavid Howells 129612bdcf33SDavid Howells static inline void afs_extract_begin(struct afs_call *call, void *buf, size_t size) 129712bdcf33SDavid Howells { 1298f105da1aSDavid Howells call->iov_len = size; 129912bdcf33SDavid Howells call->kvec[0].iov_base = buf; 130012bdcf33SDavid Howells call->kvec[0].iov_len = size; 1301fc276122SDavid Howells iov_iter_kvec(&call->def_iter, READ, call->kvec, 1, size); 130212bdcf33SDavid Howells } 130312bdcf33SDavid Howells 130412bdcf33SDavid Howells static inline void afs_extract_to_tmp(struct afs_call *call) 130512bdcf33SDavid Howells { 1306f105da1aSDavid Howells call->iov_len = sizeof(call->tmp); 130712bdcf33SDavid Howells afs_extract_begin(call, &call->tmp, sizeof(call->tmp)); 130812bdcf33SDavid Howells } 130912bdcf33SDavid Howells 131012bdcf33SDavid Howells static inline void afs_extract_to_tmp64(struct afs_call *call) 131112bdcf33SDavid Howells { 1312f105da1aSDavid Howells call->iov_len = sizeof(call->tmp64); 131312bdcf33SDavid Howells afs_extract_begin(call, &call->tmp64, sizeof(call->tmp64)); 131412bdcf33SDavid Howells } 131512bdcf33SDavid Howells 131612bdcf33SDavid Howells static inline void afs_extract_discard(struct afs_call *call, size_t size) 131712bdcf33SDavid Howells { 1318f105da1aSDavid Howells call->iov_len = size; 1319fc276122SDavid Howells iov_iter_discard(&call->def_iter, READ, size); 132012bdcf33SDavid Howells } 132112bdcf33SDavid Howells 132212bdcf33SDavid Howells static inline void afs_extract_to_buf(struct afs_call *call, size_t size) 132312bdcf33SDavid Howells { 1324f105da1aSDavid Howells call->iov_len = size; 132512bdcf33SDavid Howells afs_extract_begin(call, call->buffer, size); 132612bdcf33SDavid Howells } 132712bdcf33SDavid Howells 1328d001648eSDavid Howells static inline int afs_transfer_reply(struct afs_call *call) 1329372ee163SDavid Howells { 133012bdcf33SDavid Howells return afs_extract_data(call, false); 1331372ee163SDavid Howells } 1332372ee163SDavid Howells 133398bf40cdSDavid Howells static inline bool afs_check_call_state(struct afs_call *call, 133498bf40cdSDavid Howells enum afs_call_state state) 133598bf40cdSDavid Howells { 133698bf40cdSDavid Howells return READ_ONCE(call->state) == state; 133798bf40cdSDavid Howells } 133898bf40cdSDavid Howells 133998bf40cdSDavid Howells static inline bool afs_set_call_state(struct afs_call *call, 134098bf40cdSDavid Howells enum afs_call_state from, 134198bf40cdSDavid Howells enum afs_call_state to) 134298bf40cdSDavid Howells { 134398bf40cdSDavid Howells bool ok = false; 134498bf40cdSDavid Howells 134598bf40cdSDavid Howells spin_lock_bh(&call->state_lock); 134698bf40cdSDavid Howells if (call->state == from) { 134798bf40cdSDavid Howells call->state = to; 134898bf40cdSDavid Howells trace_afs_call_state(call, from, to, 0, 0); 134998bf40cdSDavid Howells ok = true; 135098bf40cdSDavid Howells } 135198bf40cdSDavid Howells spin_unlock_bh(&call->state_lock); 135298bf40cdSDavid Howells return ok; 135398bf40cdSDavid Howells } 135498bf40cdSDavid Howells 135598bf40cdSDavid Howells static inline void afs_set_call_complete(struct afs_call *call, 135698bf40cdSDavid Howells int error, u32 remote_abort) 135798bf40cdSDavid Howells { 135898bf40cdSDavid Howells enum afs_call_state state; 135998bf40cdSDavid Howells bool ok = false; 136098bf40cdSDavid Howells 136198bf40cdSDavid Howells spin_lock_bh(&call->state_lock); 136298bf40cdSDavid Howells state = call->state; 136398bf40cdSDavid Howells if (state != AFS_CALL_COMPLETE) { 136498bf40cdSDavid Howells call->abort_code = remote_abort; 136598bf40cdSDavid Howells call->error = error; 136698bf40cdSDavid Howells call->state = AFS_CALL_COMPLETE; 136798bf40cdSDavid Howells trace_afs_call_state(call, state, AFS_CALL_COMPLETE, 136898bf40cdSDavid Howells error, remote_abort); 136998bf40cdSDavid Howells ok = true; 137098bf40cdSDavid Howells } 137198bf40cdSDavid Howells spin_unlock_bh(&call->state_lock); 1372dde9f095SDavid Howells if (ok) { 137398bf40cdSDavid Howells trace_afs_call_done(call); 1374dde9f095SDavid Howells 1375dde9f095SDavid Howells /* Asynchronous calls have two refs to release - one from the alloc and 1376dde9f095SDavid Howells * one queued with the work item - and we can't just deallocate the 1377dde9f095SDavid Howells * call because the work item may be queued again. 1378dde9f095SDavid Howells */ 1379dde9f095SDavid Howells if (call->drop_ref) 1380dde9f095SDavid Howells afs_put_call(call); 1381dde9f095SDavid Howells } 138298bf40cdSDavid Howells } 138398bf40cdSDavid Howells 138408e0e7c8SDavid Howells /* 138500d3b7a4SDavid Howells * security.c 138600d3b7a4SDavid Howells */ 1387be080a6fSDavid Howells extern void afs_put_permits(struct afs_permits *); 138800d3b7a4SDavid Howells extern void afs_clear_permits(struct afs_vnode *); 1389a58823acSDavid Howells extern void afs_cache_permit(struct afs_vnode *, struct key *, unsigned int, 1390a58823acSDavid Howells struct afs_status_cb *); 1391416351f2SDavid Howells extern void afs_zap_permits(struct rcu_head *); 139200d3b7a4SDavid Howells extern struct key *afs_request_key(struct afs_cell *); 13938b6a666aSDavid Howells extern struct key *afs_request_key_rcu(struct afs_cell *); 13940fafdc9fSDavid Howells extern int afs_check_permit(struct afs_vnode *, struct key *, afs_access_t *); 1395549c7297SChristian Brauner extern int afs_permission(struct user_namespace *, struct inode *, int); 1396be080a6fSDavid Howells extern void __exit afs_clean_up_permit_cache(void); 139700d3b7a4SDavid Howells 139800d3b7a4SDavid Howells /* 139908e0e7c8SDavid Howells * server.c 140008e0e7c8SDavid Howells */ 140108e0e7c8SDavid Howells extern spinlock_t afs_server_peer_lock; 140208e0e7c8SDavid Howells 1403f044c884SDavid Howells extern struct afs_server *afs_find_server(struct afs_net *, 1404f044c884SDavid Howells const struct sockaddr_rxrpc *); 1405d2ddc776SDavid Howells extern struct afs_server *afs_find_server_by_uuid(struct afs_net *, const uuid_t *); 140681006805SDavid Howells extern struct afs_server *afs_lookup_server(struct afs_cell *, struct key *, const uuid_t *, u32); 140745218193SDavid Howells extern struct afs_server *afs_get_server(struct afs_server *, enum afs_server_trace); 1408977e5f8eSDavid Howells extern struct afs_server *afs_use_server(struct afs_server *, enum afs_server_trace); 1409977e5f8eSDavid Howells extern void afs_unuse_server(struct afs_net *, struct afs_server *, enum afs_server_trace); 1410977e5f8eSDavid Howells extern void afs_unuse_server_notime(struct afs_net *, struct afs_server *, enum afs_server_trace); 141145218193SDavid Howells extern void afs_put_server(struct afs_net *, struct afs_server *, enum afs_server_trace); 1412d2ddc776SDavid Howells extern void afs_manage_servers(struct work_struct *); 1413d2ddc776SDavid Howells extern void afs_servers_timer(struct timer_list *); 1414f6cbb368SDavid Howells extern void afs_fs_probe_timer(struct timer_list *); 1415f044c884SDavid Howells extern void __net_exit afs_purge_servers(struct afs_net *); 1416a310082fSDavid Howells extern bool afs_check_server_record(struct afs_operation *, struct afs_server *); 1417d2ddc776SDavid Howells 1418f6cbb368SDavid Howells static inline void afs_inc_servers_outstanding(struct afs_net *net) 1419f6cbb368SDavid Howells { 1420f6cbb368SDavid Howells atomic_inc(&net->servers_outstanding); 1421f6cbb368SDavid Howells } 1422f6cbb368SDavid Howells 1423f6cbb368SDavid Howells static inline void afs_dec_servers_outstanding(struct afs_net *net) 1424f6cbb368SDavid Howells { 1425f6cbb368SDavid Howells if (atomic_dec_and_test(&net->servers_outstanding)) 1426f6cbb368SDavid Howells wake_up_var(&net->servers_outstanding); 1427f6cbb368SDavid Howells } 1428f6cbb368SDavid Howells 1429f6cbb368SDavid Howells static inline bool afs_is_probing_server(struct afs_server *server) 1430f6cbb368SDavid Howells { 1431f6cbb368SDavid Howells return list_empty(&server->probe_link); 1432f6cbb368SDavid Howells } 1433f6cbb368SDavid Howells 1434d2ddc776SDavid Howells /* 1435d2ddc776SDavid Howells * server_list.c 1436d2ddc776SDavid Howells */ 1437d2ddc776SDavid Howells static inline struct afs_server_list *afs_get_serverlist(struct afs_server_list *slist) 1438d2ddc776SDavid Howells { 1439d2ddc776SDavid Howells refcount_inc(&slist->usage); 1440d2ddc776SDavid Howells return slist; 1441d2ddc776SDavid Howells } 1442d2ddc776SDavid Howells 1443d2ddc776SDavid Howells extern void afs_put_serverlist(struct afs_net *, struct afs_server_list *); 1444d2ddc776SDavid Howells extern struct afs_server_list *afs_alloc_server_list(struct afs_cell *, struct key *, 1445d2ddc776SDavid Howells struct afs_vldb_entry *, 1446d2ddc776SDavid Howells u8); 1447d2ddc776SDavid Howells extern bool afs_annotate_server_list(struct afs_server_list *, struct afs_server_list *); 144808e0e7c8SDavid Howells 144908e0e7c8SDavid Howells /* 145000d3b7a4SDavid Howells * super.c 145100d3b7a4SDavid Howells */ 1452f044c884SDavid Howells extern int __init afs_fs_init(void); 14535b86d4ffSDavid Howells extern void afs_fs_exit(void); 145400d3b7a4SDavid Howells 145500d3b7a4SDavid Howells /* 145608e0e7c8SDavid Howells * vlclient.c 145708e0e7c8SDavid Howells */ 14580a5143f2SDavid Howells extern struct afs_vldb_entry *afs_vl_get_entry_by_name_u(struct afs_vl_cursor *, 14590a5143f2SDavid Howells const char *, int); 14600a5143f2SDavid Howells extern struct afs_addr_list *afs_vl_get_addrs_u(struct afs_vl_cursor *, const uuid_t *); 14610b9bf381SDavid Howells extern struct afs_call *afs_vl_get_capabilities(struct afs_net *, struct afs_addr_cursor *, 14620b9bf381SDavid Howells struct key *, struct afs_vlserver *, unsigned int); 14630a5143f2SDavid Howells extern struct afs_addr_list *afs_yfsvl_get_endpoints(struct afs_vl_cursor *, const uuid_t *); 1464c3e9f888SDavid Howells extern char *afs_yfsvl_get_cell_name(struct afs_vl_cursor *); 14650a5143f2SDavid Howells 14660a5143f2SDavid Howells /* 14678a070a96SDavid Howells * vl_alias.c 14688a070a96SDavid Howells */ 14698a070a96SDavid Howells extern int afs_cell_detect_alias(struct afs_cell *, struct key *); 14708a070a96SDavid Howells 14718a070a96SDavid Howells /* 14723bf0fb6fSDavid Howells * vl_probe.c 14733bf0fb6fSDavid Howells */ 14743bf0fb6fSDavid Howells extern void afs_vlserver_probe_result(struct afs_call *); 14753bf0fb6fSDavid Howells extern int afs_send_vl_probes(struct afs_net *, struct key *, struct afs_vlserver_list *); 14763bf0fb6fSDavid Howells extern int afs_wait_for_vl_probes(struct afs_vlserver_list *, unsigned long); 14773bf0fb6fSDavid Howells 14783bf0fb6fSDavid Howells /* 14790a5143f2SDavid Howells * vl_rotate.c 14800a5143f2SDavid Howells */ 14810a5143f2SDavid Howells extern bool afs_begin_vlserver_operation(struct afs_vl_cursor *, 14820a5143f2SDavid Howells struct afs_cell *, struct key *); 14830a5143f2SDavid Howells extern bool afs_select_vlserver(struct afs_vl_cursor *); 14840a5143f2SDavid Howells extern bool afs_select_current_vlserver(struct afs_vl_cursor *); 14850a5143f2SDavid Howells extern int afs_end_vlserver_operation(struct afs_vl_cursor *); 14860a5143f2SDavid Howells 14870a5143f2SDavid Howells /* 14880a5143f2SDavid Howells * vlserver_list.c 14890a5143f2SDavid Howells */ 14900a5143f2SDavid Howells static inline struct afs_vlserver *afs_get_vlserver(struct afs_vlserver *vlserver) 14910a5143f2SDavid Howells { 14920a5143f2SDavid Howells atomic_inc(&vlserver->usage); 14930a5143f2SDavid Howells return vlserver; 14940a5143f2SDavid Howells } 14950a5143f2SDavid Howells 14960a5143f2SDavid Howells static inline struct afs_vlserver_list *afs_get_vlserverlist(struct afs_vlserver_list *vllist) 14970a5143f2SDavid Howells { 14980a5143f2SDavid Howells if (vllist) 14990a5143f2SDavid Howells atomic_inc(&vllist->usage); 15000a5143f2SDavid Howells return vllist; 15010a5143f2SDavid Howells } 15020a5143f2SDavid Howells 15030a5143f2SDavid Howells extern struct afs_vlserver *afs_alloc_vlserver(const char *, size_t, unsigned short); 15040a5143f2SDavid Howells extern void afs_put_vlserver(struct afs_net *, struct afs_vlserver *); 15050a5143f2SDavid Howells extern struct afs_vlserver_list *afs_alloc_vlserver_list(unsigned int); 15060a5143f2SDavid Howells extern void afs_put_vlserverlist(struct afs_net *, struct afs_vlserver_list *); 15070a5143f2SDavid Howells extern struct afs_vlserver_list *afs_extract_vlserver_list(struct afs_cell *, 15080a5143f2SDavid Howells const void *, size_t); 150908e0e7c8SDavid Howells 151008e0e7c8SDavid Howells /* 151108e0e7c8SDavid Howells * volume.c 151208e0e7c8SDavid Howells */ 151313fcc683SDavid Howells extern struct afs_volume *afs_create_volume(struct afs_fs_context *); 1514523d27cdSDavid Howells extern int afs_activate_volume(struct afs_volume *); 1515d2ddc776SDavid Howells extern void afs_deactivate_volume(struct afs_volume *); 1516cca37d45SDavid Howells extern struct afs_volume *afs_get_volume(struct afs_volume *, enum afs_volume_trace); 1517cca37d45SDavid Howells extern void afs_put_volume(struct afs_net *, struct afs_volume *, enum afs_volume_trace); 1518a310082fSDavid Howells extern int afs_check_volume_status(struct afs_volume *, struct afs_operation *); 151908e0e7c8SDavid Howells 152031143d5dSDavid Howells /* 152131143d5dSDavid Howells * write.c 152231143d5dSDavid Howells */ 1523c7f75ef3SDavid Howells #ifdef CONFIG_AFS_FSCACHE 152431143d5dSDavid Howells extern int afs_set_page_dirty(struct page *); 1525c7f75ef3SDavid Howells #else 1526c7f75ef3SDavid Howells #define afs_set_page_dirty __set_page_dirty_nobuffers 1527c7f75ef3SDavid Howells #endif 152815b4650eSNick Piggin extern int afs_write_begin(struct file *file, struct address_space *mapping, 152915b4650eSNick Piggin loff_t pos, unsigned len, unsigned flags, 153015b4650eSNick Piggin struct page **pagep, void **fsdata); 153115b4650eSNick Piggin extern int afs_write_end(struct file *file, struct address_space *mapping, 153215b4650eSNick Piggin loff_t pos, unsigned len, unsigned copied, 153315b4650eSNick Piggin struct page *page, void *fsdata); 153431143d5dSDavid Howells extern int afs_writepage(struct page *, struct writeback_control *); 153531143d5dSDavid Howells extern int afs_writepages(struct address_space *, struct writeback_control *); 153650b5551dSAl Viro extern ssize_t afs_file_write(struct kiocb *, struct iov_iter *); 153702c24a82SJosef Bacik extern int afs_fsync(struct file *, loff_t, loff_t, int); 15380722f186SSouptick Joarder extern vm_fault_t afs_page_mkwrite(struct vm_fault *vmf); 15394343d008SDavid Howells extern void afs_prune_wb_keys(struct afs_vnode *); 1540*a42442ddSMatthew Wilcox (Oracle) int afs_launder_folio(struct folio *); 154131143d5dSDavid Howells 1542d3e3b7eaSDavid Howells /* 1543d3e3b7eaSDavid Howells * xattr.c 1544d3e3b7eaSDavid Howells */ 1545d3e3b7eaSDavid Howells extern const struct xattr_handler *afs_xattr_handlers[]; 154631143d5dSDavid Howells 154730062bd1SDavid Howells /* 154830062bd1SDavid Howells * yfsclient.c 154930062bd1SDavid Howells */ 1550e49c7b2fSDavid Howells extern void yfs_fs_fetch_data(struct afs_operation *); 1551e49c7b2fSDavid Howells extern void yfs_fs_create_file(struct afs_operation *); 1552e49c7b2fSDavid Howells extern void yfs_fs_make_dir(struct afs_operation *); 1553e49c7b2fSDavid Howells extern void yfs_fs_remove_file2(struct afs_operation *); 1554e49c7b2fSDavid Howells extern void yfs_fs_remove_file(struct afs_operation *); 1555e49c7b2fSDavid Howells extern void yfs_fs_remove_dir(struct afs_operation *); 1556e49c7b2fSDavid Howells extern void yfs_fs_link(struct afs_operation *); 1557e49c7b2fSDavid Howells extern void yfs_fs_symlink(struct afs_operation *); 1558e49c7b2fSDavid Howells extern void yfs_fs_rename(struct afs_operation *); 1559e49c7b2fSDavid Howells extern void yfs_fs_store_data(struct afs_operation *); 1560e49c7b2fSDavid Howells extern void yfs_fs_setattr(struct afs_operation *); 1561e49c7b2fSDavid Howells extern void yfs_fs_get_volume_status(struct afs_operation *); 1562e49c7b2fSDavid Howells extern void yfs_fs_set_lock(struct afs_operation *); 1563e49c7b2fSDavid Howells extern void yfs_fs_extend_lock(struct afs_operation *); 1564e49c7b2fSDavid Howells extern void yfs_fs_release_lock(struct afs_operation *); 1565e49c7b2fSDavid Howells extern void yfs_fs_fetch_status(struct afs_operation *); 1566e49c7b2fSDavid Howells extern void yfs_fs_inline_bulk_status(struct afs_operation *); 1567d2ddc776SDavid Howells 1568ae46578bSDavid Howells struct yfs_acl { 1569ae46578bSDavid Howells struct afs_acl *acl; /* Dir/file/symlink ACL */ 1570ae46578bSDavid Howells struct afs_acl *vol_acl; /* Whole volume ACL */ 1571ae46578bSDavid Howells u32 inherit_flag; /* True if ACL is inherited from parent dir */ 1572ae46578bSDavid Howells u32 num_cleaned; /* Number of ACEs removed due to subject removal */ 1573ae46578bSDavid Howells unsigned int flags; 1574ae46578bSDavid Howells #define YFS_ACL_WANT_ACL 0x01 /* Set if caller wants ->acl */ 1575ae46578bSDavid Howells #define YFS_ACL_WANT_VOL_ACL 0x02 /* Set if caller wants ->vol_acl */ 1576ae46578bSDavid Howells }; 1577ae46578bSDavid Howells 1578ae46578bSDavid Howells extern void yfs_free_opaque_acl(struct yfs_acl *); 1579e49c7b2fSDavid Howells extern void yfs_fs_fetch_opaque_acl(struct afs_operation *); 1580e49c7b2fSDavid Howells extern void yfs_fs_store_opaque_acl2(struct afs_operation *); 1581ae46578bSDavid Howells 1582d2ddc776SDavid Howells /* 1583d2ddc776SDavid Howells * Miscellaneous inline functions. 1584d2ddc776SDavid Howells */ 1585d2ddc776SDavid Howells static inline struct afs_vnode *AFS_FS_I(struct inode *inode) 1586d2ddc776SDavid Howells { 1587d2ddc776SDavid Howells return container_of(inode, struct afs_vnode, vfs_inode); 1588d2ddc776SDavid Howells } 1589d2ddc776SDavid Howells 1590d2ddc776SDavid Howells static inline struct inode *AFS_VNODE_TO_I(struct afs_vnode *vnode) 1591d2ddc776SDavid Howells { 1592d2ddc776SDavid Howells return &vnode->vfs_inode; 1593d2ddc776SDavid Howells } 1594d2ddc776SDavid Howells 1595e49c7b2fSDavid Howells /* 1596e49c7b2fSDavid Howells * Note that a dentry got changed. We need to set d_fsdata to the data version 1597e49c7b2fSDavid Howells * number derived from the result of the operation. It doesn't matter if 1598e49c7b2fSDavid Howells * d_fsdata goes backwards as we'll just revalidate. 1599e49c7b2fSDavid Howells */ 1600e49c7b2fSDavid Howells static inline void afs_update_dentry_version(struct afs_operation *op, 1601e49c7b2fSDavid Howells struct afs_vnode_param *dir_vp, 1602e49c7b2fSDavid Howells struct dentry *dentry) 1603e49c7b2fSDavid Howells { 1604e49c7b2fSDavid Howells if (!op->error) 1605e49c7b2fSDavid Howells dentry->d_fsdata = 1606e49c7b2fSDavid Howells (void *)(unsigned long)dir_vp->scb.status.data_version; 1607e49c7b2fSDavid Howells } 1608e49c7b2fSDavid Howells 1609b6489a49SDavid Howells /* 16109d37e1caSDavid Howells * Set the file size and block count. Estimate the number of 512 bytes blocks 16119d37e1caSDavid Howells * used, rounded up to nearest 1K for consistency with other AFS clients. 16129d37e1caSDavid Howells */ 16139d37e1caSDavid Howells static inline void afs_set_i_size(struct afs_vnode *vnode, u64 size) 16149d37e1caSDavid Howells { 16159d37e1caSDavid Howells i_size_write(&vnode->vfs_inode, size); 16169d37e1caSDavid Howells vnode->vfs_inode.i_blocks = ((size + 1023) >> 10) << 1; 16179d37e1caSDavid Howells } 16189d37e1caSDavid Howells 16199d37e1caSDavid Howells /* 1620b6489a49SDavid Howells * Check for a conflicting operation on a directory that we just unlinked from. 1621b6489a49SDavid Howells * If someone managed to sneak a link or an unlink in on the file we just 1622b6489a49SDavid Howells * unlinked, we won't be able to trust nlink on an AFS file (but not YFS). 1623b6489a49SDavid Howells */ 1624b6489a49SDavid Howells static inline void afs_check_dir_conflict(struct afs_operation *op, 1625b6489a49SDavid Howells struct afs_vnode_param *dvp) 1626b6489a49SDavid Howells { 1627b6489a49SDavid Howells if (dvp->dv_before + dvp->dv_delta != dvp->scb.status.data_version) 1628b6489a49SDavid Howells op->flags |= AFS_OPERATION_DIR_CONFLICT; 1629b6489a49SDavid Howells } 1630b6489a49SDavid Howells 1631f51375cdSDavid Howells static inline int afs_io_error(struct afs_call *call, enum afs_io_error where) 1632f51375cdSDavid Howells { 1633f51375cdSDavid Howells trace_afs_io_error(call->debug_id, -EIO, where); 1634f51375cdSDavid Howells return -EIO; 1635f51375cdSDavid Howells } 1636f51375cdSDavid Howells 1637f51375cdSDavid Howells static inline int afs_bad(struct afs_vnode *vnode, enum afs_file_error where) 1638f51375cdSDavid Howells { 1639f51375cdSDavid Howells trace_afs_file_error(vnode, -EIO, where); 1640f51375cdSDavid Howells return -EIO; 1641f51375cdSDavid Howells } 1642d2ddc776SDavid Howells 164308e0e7c8SDavid Howells /*****************************************************************************/ 164408e0e7c8SDavid Howells /* 164508e0e7c8SDavid Howells * debug tracing 164608e0e7c8SDavid Howells */ 164708e0e7c8SDavid Howells extern unsigned afs_debug; 164808e0e7c8SDavid Howells 164908e0e7c8SDavid Howells #define dbgprintk(FMT,...) \ 1650ad16df84SSven Schnelle printk("[%-6.6s] "FMT"\n", current->comm ,##__VA_ARGS__) 165108e0e7c8SDavid Howells 1652530b6412SHarvey Harrison #define kenter(FMT,...) dbgprintk("==> %s("FMT")",__func__ ,##__VA_ARGS__) 1653530b6412SHarvey Harrison #define kleave(FMT,...) dbgprintk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) 165408e0e7c8SDavid Howells #define kdebug(FMT,...) dbgprintk(" "FMT ,##__VA_ARGS__) 165508e0e7c8SDavid Howells 165608e0e7c8SDavid Howells 165708e0e7c8SDavid Howells #if defined(__KDEBUG) 165808e0e7c8SDavid Howells #define _enter(FMT,...) kenter(FMT,##__VA_ARGS__) 165908e0e7c8SDavid Howells #define _leave(FMT,...) kleave(FMT,##__VA_ARGS__) 166008e0e7c8SDavid Howells #define _debug(FMT,...) kdebug(FMT,##__VA_ARGS__) 166108e0e7c8SDavid Howells 166208e0e7c8SDavid Howells #elif defined(CONFIG_AFS_DEBUG) 166308e0e7c8SDavid Howells #define AFS_DEBUG_KENTER 0x01 166408e0e7c8SDavid Howells #define AFS_DEBUG_KLEAVE 0x02 166508e0e7c8SDavid Howells #define AFS_DEBUG_KDEBUG 0x04 166608e0e7c8SDavid Howells 166708e0e7c8SDavid Howells #define _enter(FMT,...) \ 166808e0e7c8SDavid Howells do { \ 166908e0e7c8SDavid Howells if (unlikely(afs_debug & AFS_DEBUG_KENTER)) \ 167008e0e7c8SDavid Howells kenter(FMT,##__VA_ARGS__); \ 167108e0e7c8SDavid Howells } while (0) 167208e0e7c8SDavid Howells 167308e0e7c8SDavid Howells #define _leave(FMT,...) \ 167408e0e7c8SDavid Howells do { \ 167508e0e7c8SDavid Howells if (unlikely(afs_debug & AFS_DEBUG_KLEAVE)) \ 167608e0e7c8SDavid Howells kleave(FMT,##__VA_ARGS__); \ 167708e0e7c8SDavid Howells } while (0) 167808e0e7c8SDavid Howells 167908e0e7c8SDavid Howells #define _debug(FMT,...) \ 168008e0e7c8SDavid Howells do { \ 168108e0e7c8SDavid Howells if (unlikely(afs_debug & AFS_DEBUG_KDEBUG)) \ 168208e0e7c8SDavid Howells kdebug(FMT,##__VA_ARGS__); \ 168308e0e7c8SDavid Howells } while (0) 168408e0e7c8SDavid Howells 168508e0e7c8SDavid Howells #else 168612fdff3fSDavid Howells #define _enter(FMT,...) no_printk("==> %s("FMT")",__func__ ,##__VA_ARGS__) 168712fdff3fSDavid Howells #define _leave(FMT,...) no_printk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) 168812fdff3fSDavid Howells #define _debug(FMT,...) no_printk(" "FMT ,##__VA_ARGS__) 168908e0e7c8SDavid Howells #endif 169008e0e7c8SDavid Howells 169108e0e7c8SDavid Howells /* 169208e0e7c8SDavid Howells * debug assertion checking 169308e0e7c8SDavid Howells */ 169408e0e7c8SDavid Howells #if 1 // defined(__KDEBUGALL) 169508e0e7c8SDavid Howells 169608e0e7c8SDavid Howells #define ASSERT(X) \ 169708e0e7c8SDavid Howells do { \ 169808e0e7c8SDavid Howells if (unlikely(!(X))) { \ 169908e0e7c8SDavid Howells printk(KERN_ERR "\n"); \ 170008e0e7c8SDavid Howells printk(KERN_ERR "AFS: Assertion failed\n"); \ 170108e0e7c8SDavid Howells BUG(); \ 170208e0e7c8SDavid Howells } \ 170308e0e7c8SDavid Howells } while(0) 170408e0e7c8SDavid Howells 170508e0e7c8SDavid Howells #define ASSERTCMP(X, OP, Y) \ 170608e0e7c8SDavid Howells do { \ 170708e0e7c8SDavid Howells if (unlikely(!((X) OP (Y)))) { \ 170808e0e7c8SDavid Howells printk(KERN_ERR "\n"); \ 170908e0e7c8SDavid Howells printk(KERN_ERR "AFS: Assertion failed\n"); \ 171008e0e7c8SDavid Howells printk(KERN_ERR "%lu " #OP " %lu is false\n", \ 171108e0e7c8SDavid Howells (unsigned long)(X), (unsigned long)(Y)); \ 171208e0e7c8SDavid Howells printk(KERN_ERR "0x%lx " #OP " 0x%lx is false\n", \ 171308e0e7c8SDavid Howells (unsigned long)(X), (unsigned long)(Y)); \ 171408e0e7c8SDavid Howells BUG(); \ 171508e0e7c8SDavid Howells } \ 171608e0e7c8SDavid Howells } while(0) 171708e0e7c8SDavid Howells 1718416351f2SDavid Howells #define ASSERTRANGE(L, OP1, N, OP2, H) \ 1719416351f2SDavid Howells do { \ 1720416351f2SDavid Howells if (unlikely(!((L) OP1 (N)) || !((N) OP2 (H)))) { \ 1721416351f2SDavid Howells printk(KERN_ERR "\n"); \ 1722416351f2SDavid Howells printk(KERN_ERR "AFS: Assertion failed\n"); \ 1723416351f2SDavid Howells printk(KERN_ERR "%lu "#OP1" %lu "#OP2" %lu is false\n", \ 1724416351f2SDavid Howells (unsigned long)(L), (unsigned long)(N), \ 1725416351f2SDavid Howells (unsigned long)(H)); \ 1726416351f2SDavid Howells printk(KERN_ERR "0x%lx "#OP1" 0x%lx "#OP2" 0x%lx is false\n", \ 1727416351f2SDavid Howells (unsigned long)(L), (unsigned long)(N), \ 1728416351f2SDavid Howells (unsigned long)(H)); \ 1729416351f2SDavid Howells BUG(); \ 1730416351f2SDavid Howells } \ 1731416351f2SDavid Howells } while(0) 1732416351f2SDavid Howells 173308e0e7c8SDavid Howells #define ASSERTIF(C, X) \ 173408e0e7c8SDavid Howells do { \ 173508e0e7c8SDavid Howells if (unlikely((C) && !(X))) { \ 173608e0e7c8SDavid Howells printk(KERN_ERR "\n"); \ 173708e0e7c8SDavid Howells printk(KERN_ERR "AFS: Assertion failed\n"); \ 173808e0e7c8SDavid Howells BUG(); \ 173908e0e7c8SDavid Howells } \ 174008e0e7c8SDavid Howells } while(0) 174108e0e7c8SDavid Howells 174208e0e7c8SDavid Howells #define ASSERTIFCMP(C, X, OP, Y) \ 174308e0e7c8SDavid Howells do { \ 174408e0e7c8SDavid Howells if (unlikely((C) && !((X) OP (Y)))) { \ 174508e0e7c8SDavid Howells printk(KERN_ERR "\n"); \ 174608e0e7c8SDavid Howells printk(KERN_ERR "AFS: Assertion failed\n"); \ 174708e0e7c8SDavid Howells printk(KERN_ERR "%lu " #OP " %lu is false\n", \ 174808e0e7c8SDavid Howells (unsigned long)(X), (unsigned long)(Y)); \ 174908e0e7c8SDavid Howells printk(KERN_ERR "0x%lx " #OP " 0x%lx is false\n", \ 175008e0e7c8SDavid Howells (unsigned long)(X), (unsigned long)(Y)); \ 175108e0e7c8SDavid Howells BUG(); \ 175208e0e7c8SDavid Howells } \ 175308e0e7c8SDavid Howells } while(0) 175408e0e7c8SDavid Howells 175508e0e7c8SDavid Howells #else 175608e0e7c8SDavid Howells 175708e0e7c8SDavid Howells #define ASSERT(X) \ 175808e0e7c8SDavid Howells do { \ 175908e0e7c8SDavid Howells } while(0) 176008e0e7c8SDavid Howells 176108e0e7c8SDavid Howells #define ASSERTCMP(X, OP, Y) \ 176208e0e7c8SDavid Howells do { \ 176308e0e7c8SDavid Howells } while(0) 176408e0e7c8SDavid Howells 1765416351f2SDavid Howells #define ASSERTRANGE(L, OP1, N, OP2, H) \ 1766416351f2SDavid Howells do { \ 1767416351f2SDavid Howells } while(0) 1768416351f2SDavid Howells 176908e0e7c8SDavid Howells #define ASSERTIF(C, X) \ 177008e0e7c8SDavid Howells do { \ 177108e0e7c8SDavid Howells } while(0) 177208e0e7c8SDavid Howells 177308e0e7c8SDavid Howells #define ASSERTIFCMP(C, X, OP, Y) \ 177408e0e7c8SDavid Howells do { \ 177508e0e7c8SDavid Howells } while(0) 177608e0e7c8SDavid Howells 177708e0e7c8SDavid Howells #endif /* __KDEBUGALL */ 1778