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; 3408e0e7c8SDavid Howells 356c6c1d63SDavid Howells /* 366c6c1d63SDavid Howells * Partial file-locking emulation mode. (The problem being that AFS3 only 376c6c1d63SDavid Howells * allows whole-file locks and no upgrading/downgrading). 386c6c1d63SDavid Howells */ 396c6c1d63SDavid Howells enum afs_flock_mode { 406c6c1d63SDavid Howells afs_flock_mode_unset, 416c6c1d63SDavid Howells afs_flock_mode_local, /* Local locking only */ 426c6c1d63SDavid Howells afs_flock_mode_openafs, /* Don't get server lock for a partial lock */ 436c6c1d63SDavid Howells afs_flock_mode_strict, /* Always get a server lock for a partial lock */ 446c6c1d63SDavid Howells afs_flock_mode_write, /* Get an exclusive server lock for a partial lock */ 456c6c1d63SDavid Howells }; 466c6c1d63SDavid Howells 4713fcc683SDavid Howells struct afs_fs_context { 4800d3b7a4SDavid Howells bool force; /* T to force cell type */ 49bec5eb61Swanglei bool autocell; /* T if set auto mount operation */ 504d673da1SDavid Howells bool dyn_root; /* T if dynamic root */ 5113fcc683SDavid Howells bool no_cell; /* T if the source is "none" (for dynroot) */ 526c6c1d63SDavid Howells enum afs_flock_mode flock_mode; /* Partial file-locking emulation mode */ 5300d3b7a4SDavid Howells afs_voltype_t type; /* type of volume requested */ 5413fcc683SDavid Howells unsigned int volnamesz; /* size of volume name */ 5500d3b7a4SDavid Howells const char *volname; /* name of volume to mount */ 565b86d4ffSDavid Howells struct afs_net *net; /* the AFS net namespace stuff */ 5700d3b7a4SDavid Howells struct afs_cell *cell; /* cell in which to find volume */ 5800d3b7a4SDavid Howells struct afs_volume *volume; /* volume record */ 5900d3b7a4SDavid Howells struct key *key; /* key to use for secure mounting */ 6000d3b7a4SDavid Howells }; 6100d3b7a4SDavid Howells 628e8d7f13SDavid Howells enum afs_call_state { 6398bf40cdSDavid Howells AFS_CALL_CL_REQUESTING, /* Client: Request is being sent */ 6498bf40cdSDavid Howells AFS_CALL_CL_AWAIT_REPLY, /* Client: Awaiting reply */ 6598bf40cdSDavid Howells AFS_CALL_CL_PROC_REPLY, /* Client: rxrpc call complete; processing reply */ 6698bf40cdSDavid Howells AFS_CALL_SV_AWAIT_OP_ID, /* Server: Awaiting op ID */ 6798bf40cdSDavid Howells AFS_CALL_SV_AWAIT_REQUEST, /* Server: Awaiting request data */ 6898bf40cdSDavid Howells AFS_CALL_SV_REPLYING, /* Server: Replying */ 6998bf40cdSDavid Howells AFS_CALL_SV_AWAIT_ACK, /* Server: Awaiting final ACK */ 708e8d7f13SDavid Howells AFS_CALL_COMPLETE, /* Completed or failed */ 718e8d7f13SDavid Howells }; 72f044c884SDavid Howells 7308e0e7c8SDavid Howells /* 748b2a464cSDavid Howells * List of server addresses. 758b2a464cSDavid Howells */ 768b2a464cSDavid Howells struct afs_addr_list { 77ddd2b85fSJann Horn struct rcu_head rcu; 788b2a464cSDavid Howells refcount_t usage; 79d2ddc776SDavid Howells u32 version; /* Version */ 8068eb64c3SDavid Howells unsigned char max_addrs; 8168eb64c3SDavid Howells unsigned char nr_addrs; 823bf0fb6fSDavid Howells unsigned char preferred; /* Preferred address */ 8368eb64c3SDavid Howells unsigned char nr_ipv4; /* Number of IPv4 addresses */ 840a5143f2SDavid Howells enum dns_record_source source:8; 850a5143f2SDavid Howells enum dns_lookup_status status:8; 863bf0fb6fSDavid Howells unsigned long failed; /* Mask of addrs that failed locally/ICMP */ 873bf0fb6fSDavid Howells unsigned long responded; /* Mask of addrs that responded */ 888b2a464cSDavid Howells struct sockaddr_rxrpc addrs[]; 8968eb64c3SDavid Howells #define AFS_MAX_ADDRESSES ((unsigned int)(sizeof(unsigned long) * 8)) 908b2a464cSDavid Howells }; 918b2a464cSDavid Howells 928b2a464cSDavid Howells /* 9308e0e7c8SDavid Howells * a record of an in-progress RxRPC call 9408e0e7c8SDavid Howells */ 9508e0e7c8SDavid Howells struct afs_call { 9608e0e7c8SDavid Howells const struct afs_call_type *type; /* type of call */ 973bf0fb6fSDavid Howells struct afs_addr_list *alist; /* Address is alist[addr_ix] */ 9808e0e7c8SDavid Howells wait_queue_head_t waitq; /* processes awaiting completion */ 99341f741fSDavid Howells struct work_struct async_work; /* async I/O processor */ 10008e0e7c8SDavid Howells struct work_struct work; /* actual work processor */ 10108e0e7c8SDavid Howells struct rxrpc_call *rxcall; /* RxRPC call handle */ 10208e0e7c8SDavid Howells struct key *key; /* security for this call */ 103f044c884SDavid Howells struct afs_net *net; /* The network namespace */ 104a6853b9cSDavid Howells struct afs_server *server; /* The fileserver record if fs op (pins ref) */ 105a6853b9cSDavid Howells struct afs_vlserver *vlserver; /* The vlserver record if vl op */ 10608e0e7c8SDavid Howells void *request; /* request data (first part) */ 107fc276122SDavid Howells struct iov_iter def_iter; /* Default buffer/data iterator */ 108fc276122SDavid Howells struct iov_iter *iter; /* Iterator currently in use */ 109fc276122SDavid Howells union { /* Convenience for ->def_iter */ 11012bdcf33SDavid Howells struct kvec kvec[1]; 11112bdcf33SDavid Howells struct bio_vec bvec[1]; 11212bdcf33SDavid Howells }; 11308e0e7c8SDavid Howells void *buffer; /* reply receive buffer */ 114ffba718eSDavid Howells union { 115ffba718eSDavid Howells long ret0; /* Value to reply with instead of 0 */ 116ffba718eSDavid Howells struct afs_addr_list *ret_alist; 117ffba718eSDavid Howells struct afs_vldb_entry *ret_vldb; 118c3e9f888SDavid Howells char *ret_str; 119ffba718eSDavid Howells }; 120e49c7b2fSDavid Howells struct afs_operation *op; 121ffba718eSDavid Howells unsigned int server_index; 122341f741fSDavid Howells atomic_t usage; 1238e8d7f13SDavid Howells enum afs_call_state state; 12498bf40cdSDavid Howells spinlock_t state_lock; 12508e0e7c8SDavid Howells int error; /* error code */ 126d001648eSDavid Howells u32 abort_code; /* Remote abort ID or 0 */ 12794f699c9SDavid Howells unsigned int max_lifespan; /* Maximum lifespan to set if not 0 */ 12808e0e7c8SDavid Howells unsigned request_size; /* size of request data */ 12908e0e7c8SDavid Howells unsigned reply_max; /* maximum size of reply */ 130bcd89270SMarc Dionne unsigned count2; /* count used in unmarshalling */ 13108e0e7c8SDavid Howells unsigned char unmarshall; /* unmarshalling phase */ 1323bf0fb6fSDavid Howells unsigned char addr_ix; /* Address in ->alist */ 133dde9f095SDavid Howells bool drop_ref; /* T if need to drop ref for incoming call */ 13431143d5dSDavid Howells bool send_pages; /* T if data from mapping should be sent */ 135d001648eSDavid Howells bool need_attention; /* T if RxRPC poked us */ 13656ff9c83SDavid Howells bool async; /* T if asynchronous */ 137a68f4a27SDavid Howells bool upgrade; /* T to request service upgrade */ 1384571577fSDavid Howells bool have_reply_time; /* T if have got reply_time */ 13920b8391fSDavid Howells bool intr; /* T if interruptible */ 14038355eecSDavid Howells bool unmarshalling_error; /* T if an unmarshalling error occurred */ 141bf99a53cSDavid Howells u16 service_id; /* Actual service ID (after upgrade) */ 142a25e21f0SDavid Howells unsigned int debug_id; /* Trace ID */ 14350a2c953SDavid Howells u32 operation_ID; /* operation ID for an incoming call */ 14408e0e7c8SDavid Howells u32 count; /* count for use in unmarshalling */ 14512bdcf33SDavid Howells union { /* place to extract temporary data */ 14612bdcf33SDavid Howells struct { 14712bdcf33SDavid Howells __be32 tmp_u; 14812bdcf33SDavid Howells __be32 tmp; 14912bdcf33SDavid Howells } __attribute__((packed)); 15012bdcf33SDavid Howells __be64 tmp64; 15112bdcf33SDavid Howells }; 15212d8e95aSDavid Howells ktime_t reply_time; /* Time of first reply packet */ 15308e0e7c8SDavid Howells }; 15408e0e7c8SDavid Howells 15508e0e7c8SDavid Howells struct afs_call_type { 15600d3b7a4SDavid Howells const char *name; 157025db80cSDavid Howells unsigned int op; /* Really enum afs_fs_operation */ 15800d3b7a4SDavid Howells 15908e0e7c8SDavid Howells /* deliver request or reply data to an call 16008e0e7c8SDavid Howells * - returning an error will cause the call to be aborted 16108e0e7c8SDavid Howells */ 162d001648eSDavid Howells int (*deliver)(struct afs_call *call); 16308e0e7c8SDavid Howells 16408e0e7c8SDavid Howells /* clean up a call */ 16508e0e7c8SDavid Howells void (*destructor)(struct afs_call *call); 166341f741fSDavid Howells 167341f741fSDavid Howells /* Work function */ 168341f741fSDavid Howells void (*work)(struct work_struct *work); 1693bf0fb6fSDavid Howells 1703bf0fb6fSDavid Howells /* Call done function (gets called immediately on success or failure) */ 1713bf0fb6fSDavid Howells void (*done)(struct afs_call *call); 17208e0e7c8SDavid Howells }; 17308e0e7c8SDavid Howells 17408e0e7c8SDavid Howells /* 1754343d008SDavid Howells * Key available for writeback on a file. 1764343d008SDavid Howells */ 1774343d008SDavid Howells struct afs_wb_key { 1784343d008SDavid Howells refcount_t usage; 1794343d008SDavid Howells struct key *key; 1804343d008SDavid Howells struct list_head vnode_link; /* Link in vnode->wb_keys */ 1814343d008SDavid Howells }; 1824343d008SDavid Howells 1834343d008SDavid Howells /* 184215804a9SDavid Howells * AFS open file information record. Pointed to by file->private_data. 185215804a9SDavid Howells */ 186215804a9SDavid Howells struct afs_file { 187215804a9SDavid Howells struct key *key; /* The key this file was opened with */ 1884343d008SDavid Howells struct afs_wb_key *wb; /* Writeback key record for this file */ 189215804a9SDavid Howells }; 190215804a9SDavid Howells 191215804a9SDavid Howells static inline struct key *afs_file_key(struct file *file) 192215804a9SDavid Howells { 193215804a9SDavid Howells struct afs_file *af = file->private_data; 194215804a9SDavid Howells 195215804a9SDavid Howells return af->key; 196215804a9SDavid Howells } 197215804a9SDavid Howells 198215804a9SDavid Howells /* 199196ee9cdSDavid Howells * Record of an outstanding read operation on a vnode. 200196ee9cdSDavid Howells */ 201196ee9cdSDavid Howells struct afs_read { 202196ee9cdSDavid Howells loff_t pos; /* Where to start reading */ 203e8e581a8SDavid Howells loff_t len; /* How much we're asking for */ 204196ee9cdSDavid Howells loff_t actual_len; /* How much we're actually getting */ 2056a0e3999SDavid Howells loff_t remain; /* Amount remaining */ 206f3ddee8dSDavid Howells loff_t file_size; /* File size returned by server */ 207*c69bf479SDavid Howells struct key *key; /* The key to use to reissue the read */ 208f3ddee8dSDavid Howells afs_dataversion_t data_version; /* Version number returned by server */ 209f3ddee8dSDavid Howells refcount_t usage; 210196ee9cdSDavid Howells unsigned int index; /* Which page we're reading into */ 211196ee9cdSDavid Howells unsigned int nr_pages; 21212bdcf33SDavid Howells unsigned int offset; /* offset into current page */ 213a58823acSDavid Howells struct afs_vnode *vnode; 214a58823acSDavid Howells void (*page_done)(struct afs_read *); 215f3ddee8dSDavid Howells struct page **pages; 216f3ddee8dSDavid Howells struct page *array[]; 217196ee9cdSDavid Howells }; 218196ee9cdSDavid Howells 219196ee9cdSDavid Howells /* 22008e0e7c8SDavid Howells * AFS superblock private data 22108e0e7c8SDavid Howells * - there's one superblock per volume 22208e0e7c8SDavid Howells */ 22308e0e7c8SDavid Howells struct afs_super_info { 2245b86d4ffSDavid Howells struct net *net_ns; /* Network namespace */ 22549566f6fSDavid Howells struct afs_cell *cell; /* The cell in which the volume resides */ 22608e0e7c8SDavid Howells struct afs_volume *volume; /* volume record */ 2276c6c1d63SDavid Howells enum afs_flock_mode flock_mode:8; /* File locking emulation mode */ 2284d673da1SDavid Howells bool dyn_root; /* True if dynamic root */ 22908e0e7c8SDavid Howells }; 23008e0e7c8SDavid Howells 23108e0e7c8SDavid Howells static inline struct afs_super_info *AFS_FS_S(struct super_block *sb) 23208e0e7c8SDavid Howells { 23308e0e7c8SDavid Howells return sb->s_fs_info; 23408e0e7c8SDavid Howells } 23508e0e7c8SDavid Howells 23608e0e7c8SDavid Howells extern struct file_system_type afs_fs_type; 23708e0e7c8SDavid Howells 23808e0e7c8SDavid Howells /* 2396f8880d8SDavid Howells * Set of substitutes for @sys. 2406f8880d8SDavid Howells */ 2416f8880d8SDavid Howells struct afs_sysnames { 2426f8880d8SDavid Howells #define AFS_NR_SYSNAME 16 2436f8880d8SDavid Howells char *subs[AFS_NR_SYSNAME]; 2446f8880d8SDavid Howells refcount_t usage; 2456f8880d8SDavid Howells unsigned short nr; 2466f8880d8SDavid Howells char blank[1]; 2476f8880d8SDavid Howells }; 2486f8880d8SDavid Howells 2496f8880d8SDavid Howells /* 250f044c884SDavid Howells * AFS network namespace record. 251f044c884SDavid Howells */ 252f044c884SDavid Howells struct afs_net { 2535b86d4ffSDavid Howells struct net *net; /* Backpointer to the owning net namespace */ 254f044c884SDavid Howells struct afs_uuid uuid; 255f044c884SDavid Howells bool live; /* F if this namespace is being removed */ 256f044c884SDavid Howells 257f044c884SDavid Howells /* AF_RXRPC I/O stuff */ 258f044c884SDavid Howells struct socket *socket; 259f044c884SDavid Howells struct afs_call *spare_incoming_call; 260f044c884SDavid Howells struct work_struct charge_preallocation_work; 261f044c884SDavid Howells struct mutex socket_mutex; 262f044c884SDavid Howells atomic_t nr_outstanding_calls; 263f044c884SDavid Howells atomic_t nr_superblocks; 264f044c884SDavid Howells 265f044c884SDavid Howells /* Cell database */ 266989782dcSDavid Howells struct rb_root cells; 26792e3cc91SDavid Howells struct afs_cell *ws_cell; 268989782dcSDavid Howells struct work_struct cells_manager; 269989782dcSDavid Howells struct timer_list cells_timer; 270989782dcSDavid Howells atomic_t cells_outstanding; 27192e3cc91SDavid Howells struct rw_semaphore cells_lock; 2728a070a96SDavid Howells struct mutex cells_alias_lock; 273f044c884SDavid Howells 2740da0b7fdSDavid Howells struct mutex proc_cells_lock; 2756b3944e4SDavid Howells struct hlist_head proc_cells; 276f044c884SDavid Howells 277d2ddc776SDavid Howells /* Known servers. Theoretically each fileserver can only be in one 278d2ddc776SDavid Howells * cell, but in practice, people create aliases and subsets and there's 279d2ddc776SDavid Howells * no easy way to distinguish them. 280d2ddc776SDavid Howells */ 281f6cbb368SDavid Howells seqlock_t fs_lock; /* For fs_servers, fs_probe_*, fs_proc */ 282d2ddc776SDavid Howells struct rb_root fs_servers; /* afs_server (by server UUID or address) */ 283f6cbb368SDavid Howells struct list_head fs_probe_fast; /* List of afs_server to probe at 30s intervals */ 284f6cbb368SDavid Howells struct list_head fs_probe_slow; /* List of afs_server to probe at 5m intervals */ 285d2ddc776SDavid Howells struct hlist_head fs_proc; /* procfs servers list */ 286d2ddc776SDavid Howells 287d2ddc776SDavid Howells struct hlist_head fs_addresses4; /* afs_server (by lowest IPv4 addr) */ 288d2ddc776SDavid Howells struct hlist_head fs_addresses6; /* afs_server (by lowest IPv6 addr) */ 289d2ddc776SDavid Howells seqlock_t fs_addr_lock; /* For fs_addresses[46] */ 290d2ddc776SDavid Howells 291d2ddc776SDavid Howells struct work_struct fs_manager; 292d2ddc776SDavid Howells struct timer_list fs_timer; 293f6cbb368SDavid Howells 294f6cbb368SDavid Howells struct work_struct fs_prober; 295f6cbb368SDavid Howells struct timer_list fs_probe_timer; 296d2ddc776SDavid Howells atomic_t servers_outstanding; 297f044c884SDavid Howells 298f044c884SDavid Howells /* File locking renewal management */ 299f044c884SDavid Howells struct mutex lock_manager_mutex; 300f044c884SDavid Howells 301f044c884SDavid Howells /* Misc */ 3020da0b7fdSDavid Howells struct super_block *dynroot_sb; /* Dynamic root mount superblock */ 303f044c884SDavid Howells struct proc_dir_entry *proc_afs; /* /proc/net/afs directory */ 3046f8880d8SDavid Howells struct afs_sysnames *sysnames; 3056f8880d8SDavid Howells rwlock_t sysnames_lock; 306d55b4da4SDavid Howells 307d55b4da4SDavid Howells /* Statistics counters */ 308d55b4da4SDavid Howells atomic_t n_lookup; /* Number of lookups done */ 309d55b4da4SDavid Howells atomic_t n_reval; /* Number of dentries needing revalidation */ 310d55b4da4SDavid Howells atomic_t n_inval; /* Number of invalidations by the server */ 311f3ddee8dSDavid Howells atomic_t n_relpg; /* Number of invalidations by releasepage */ 312d55b4da4SDavid Howells atomic_t n_read_dir; /* Number of directory pages read */ 31363a4681fSDavid Howells atomic_t n_dir_cr; /* Number of directory entry creation edits */ 31463a4681fSDavid Howells atomic_t n_dir_rm; /* Number of directory entry removal edits */ 31576a5cb6fSDavid Howells atomic_t n_stores; /* Number of store ops */ 31676a5cb6fSDavid Howells atomic_long_t n_store_bytes; /* Number of bytes stored */ 31776a5cb6fSDavid Howells atomic_long_t n_fetch_bytes; /* Number of bytes fetched */ 31876a5cb6fSDavid Howells atomic_t n_fetches; /* Number of data fetch ops */ 319f044c884SDavid Howells }; 320f044c884SDavid Howells 3216f8880d8SDavid Howells extern const char afs_init_sysname[]; 322f044c884SDavid Howells 323989782dcSDavid Howells enum afs_cell_state { 324989782dcSDavid Howells AFS_CELL_UNSET, 325989782dcSDavid Howells AFS_CELL_ACTIVATING, 326989782dcSDavid Howells AFS_CELL_ACTIVE, 327989782dcSDavid Howells AFS_CELL_DEACTIVATING, 328989782dcSDavid Howells AFS_CELL_INACTIVE, 329989782dcSDavid Howells AFS_CELL_FAILED, 3301d0e850aSDavid Howells AFS_CELL_REMOVED, 331989782dcSDavid Howells }; 332989782dcSDavid Howells 333f044c884SDavid Howells /* 334d2ddc776SDavid Howells * AFS cell record. 335d2ddc776SDavid Howells * 336d2ddc776SDavid Howells * This is a tricky concept to get right as it is possible to create aliases 337d2ddc776SDavid Howells * simply by pointing AFSDB/SRV records for two names at the same set of VL 338d2ddc776SDavid Howells * servers; it is also possible to do things like setting up two sets of VL 339d2ddc776SDavid Howells * servers, one of which provides a superset of the volumes provided by the 340d2ddc776SDavid Howells * other (for internal/external division, for example). 341d2ddc776SDavid Howells * 342d2ddc776SDavid Howells * Cells only exist in the sense that (a) a cell's name maps to a set of VL 343d2ddc776SDavid Howells * servers and (b) a cell's name is used by the client to select the key to use 344d2ddc776SDavid Howells * for authentication and encryption. The cell name is not typically used in 345d2ddc776SDavid Howells * the protocol. 346d2ddc776SDavid Howells * 3478a070a96SDavid Howells * Two cells are determined to be aliases if they have an explicit alias (YFS 3488a070a96SDavid Howells * only), share any VL servers in common or have at least one volume in common. 3498a070a96SDavid Howells * "In common" means that the address list of the VL servers or the fileservers 3508a070a96SDavid Howells * share at least one endpoint. 35108e0e7c8SDavid Howells */ 35208e0e7c8SDavid Howells struct afs_cell { 353989782dcSDavid Howells union { 354989782dcSDavid Howells struct rcu_head rcu; 355989782dcSDavid Howells struct rb_node net_node; /* Node in net->cells */ 356989782dcSDavid Howells }; 357989782dcSDavid Howells struct afs_net *net; 3588a070a96SDavid Howells struct afs_cell *alias_of; /* The cell this is an alias of */ 3598a070a96SDavid Howells struct afs_volume *root_volume; /* The root.cell volume if there is one */ 36000d3b7a4SDavid Howells struct key *anonymous_key; /* anonymous user key for this cell */ 361989782dcSDavid Howells struct work_struct manager; /* Manager for init/deinit/dns */ 3626b3944e4SDavid Howells struct hlist_node proc_link; /* /proc cell list link */ 3639b3f26c9SDavid Howells #ifdef CONFIG_AFS_FSCACHE 3649b3f26c9SDavid Howells struct fscache_cookie *cache; /* caching cookie */ 3651da177e4SLinus Torvalds #endif 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 */ 389989782dcSDavid Howells 390d2ddc776SDavid Howells /* VL server list. */ 3910a5143f2SDavid Howells rwlock_t vl_servers_lock; /* Lock on vl_servers */ 3920a5143f2SDavid Howells struct afs_vlserver_list __rcu *vl_servers; 3930a5143f2SDavid Howells 394989782dcSDavid Howells u8 name_len; /* Length of name */ 395719fdd32SDavid Howells char *name; /* Cell name, case-flattened and NUL-padded */ 39608e0e7c8SDavid Howells }; 39708e0e7c8SDavid Howells 39808e0e7c8SDavid Howells /* 3990a5143f2SDavid Howells * Volume Location server record. 4000a5143f2SDavid Howells */ 4010a5143f2SDavid Howells struct afs_vlserver { 4020a5143f2SDavid Howells struct rcu_head rcu; 4030a5143f2SDavid Howells struct afs_addr_list __rcu *addresses; /* List of addresses for this VL server */ 4040a5143f2SDavid Howells unsigned long flags; 4050a5143f2SDavid Howells #define AFS_VLSERVER_FL_PROBED 0 /* The VL server has been probed */ 4060a5143f2SDavid Howells #define AFS_VLSERVER_FL_PROBING 1 /* VL server is being probed */ 4073bf0fb6fSDavid Howells #define AFS_VLSERVER_FL_IS_YFS 2 /* Server is YFS not AFS */ 408b95b3094SDavid Howells #define AFS_VLSERVER_FL_RESPONDING 3 /* VL server is responding */ 4090a5143f2SDavid Howells rwlock_t lock; /* Lock on addresses */ 4100a5143f2SDavid Howells atomic_t usage; 411b95b3094SDavid Howells unsigned int rtt; /* Server's current RTT in uS */ 4123bf0fb6fSDavid Howells 4133bf0fb6fSDavid Howells /* Probe state */ 4143bf0fb6fSDavid Howells wait_queue_head_t probe_wq; 4153bf0fb6fSDavid Howells atomic_t probe_outstanding; 4163bf0fb6fSDavid Howells spinlock_t probe_lock; 4173bf0fb6fSDavid Howells struct { 418b95b3094SDavid Howells unsigned int rtt; /* RTT in uS */ 4193bf0fb6fSDavid Howells u32 abort_code; 4203bf0fb6fSDavid Howells short error; 421fb72cd3dSDavid Howells unsigned short flags; 422fb72cd3dSDavid Howells #define AFS_VLSERVER_PROBE_RESPONDED 0x01 /* At least once response (may be abort) */ 423fb72cd3dSDavid Howells #define AFS_VLSERVER_PROBE_IS_YFS 0x02 /* The peer appears to be YFS */ 424fb72cd3dSDavid Howells #define AFS_VLSERVER_PROBE_NOT_YFS 0x04 /* The peer appears not to be YFS */ 425fb72cd3dSDavid Howells #define AFS_VLSERVER_PROBE_LOCAL_FAILURE 0x08 /* A local failure prevented a probe */ 4263bf0fb6fSDavid Howells } probe; 4273bf0fb6fSDavid Howells 4280a5143f2SDavid Howells u16 port; 4293bf0fb6fSDavid Howells u16 name_len; /* Length of name */ 4300a5143f2SDavid Howells char name[]; /* Server name, case-flattened */ 4310a5143f2SDavid Howells }; 4320a5143f2SDavid Howells 4330a5143f2SDavid Howells /* 4340a5143f2SDavid Howells * Weighted list of Volume Location servers. 4350a5143f2SDavid Howells */ 4360a5143f2SDavid Howells struct afs_vlserver_entry { 4370a5143f2SDavid Howells u16 priority; /* Preference (as SRV) */ 4380a5143f2SDavid Howells u16 weight; /* Weight (as SRV) */ 4390a5143f2SDavid Howells enum dns_record_source source:8; 4400a5143f2SDavid Howells enum dns_lookup_status status:8; 4410a5143f2SDavid Howells struct afs_vlserver *server; 4420a5143f2SDavid Howells }; 4430a5143f2SDavid Howells 4440a5143f2SDavid Howells struct afs_vlserver_list { 4450a5143f2SDavid Howells struct rcu_head rcu; 4460a5143f2SDavid Howells atomic_t usage; 4470a5143f2SDavid Howells u8 nr_servers; 4480a5143f2SDavid Howells u8 index; /* Server currently in use */ 4493bf0fb6fSDavid Howells u8 preferred; /* Preferred server */ 4500a5143f2SDavid Howells enum dns_record_source source:8; 4510a5143f2SDavid Howells enum dns_lookup_status status:8; 4520a5143f2SDavid Howells rwlock_t lock; 4530a5143f2SDavid Howells struct afs_vlserver_entry servers[]; 4540a5143f2SDavid Howells }; 4550a5143f2SDavid Howells 4560a5143f2SDavid Howells /* 457d2ddc776SDavid Howells * Cached VLDB entry. 458d2ddc776SDavid Howells * 459d2ddc776SDavid Howells * This is pointed to by cell->vldb_entries, indexed by name. 46008e0e7c8SDavid Howells */ 461d2ddc776SDavid Howells struct afs_vldb_entry { 462d2ddc776SDavid Howells afs_volid_t vid[3]; /* Volume IDs for R/W, R/O and Bak volumes */ 46300d3b7a4SDavid Howells 464d2ddc776SDavid Howells unsigned long flags; 465d2ddc776SDavid Howells #define AFS_VLDB_HAS_RW 0 /* - R/W volume exists */ 466d2ddc776SDavid Howells #define AFS_VLDB_HAS_RO 1 /* - R/O volume exists */ 467d2ddc776SDavid Howells #define AFS_VLDB_HAS_BAK 2 /* - Backup volume exists */ 468d2ddc776SDavid Howells #define AFS_VLDB_QUERY_VALID 3 /* - Record is valid */ 469d2ddc776SDavid Howells #define AFS_VLDB_QUERY_ERROR 4 /* - VL server returned error */ 470d2ddc776SDavid Howells 471d2ddc776SDavid Howells uuid_t fs_server[AFS_NMAXNSERVERS]; 47281006805SDavid Howells u32 addr_version[AFS_NMAXNSERVERS]; /* Registration change counters */ 473d2ddc776SDavid Howells u8 fs_mask[AFS_NMAXNSERVERS]; 47408e0e7c8SDavid Howells #define AFS_VOL_VTM_RW 0x01 /* R/W version of the volume is available (on this server) */ 47508e0e7c8SDavid Howells #define AFS_VOL_VTM_RO 0x02 /* R/O version of the volume is available (on this server) */ 47608e0e7c8SDavid Howells #define AFS_VOL_VTM_BAK 0x04 /* backup version of the volume is available (on this server) */ 477d2ddc776SDavid Howells short error; 478d2ddc776SDavid Howells u8 nr_servers; /* Number of server records */ 479d2ddc776SDavid Howells u8 name_len; 480d2ddc776SDavid Howells u8 name[AFS_MAXVOLNAME + 1]; /* NUL-padded volume name */ 48108e0e7c8SDavid Howells }; 48208e0e7c8SDavid Howells 48308e0e7c8SDavid Howells /* 484d2ddc776SDavid Howells * Record of fileserver with which we're actively communicating. 48508e0e7c8SDavid Howells */ 48608e0e7c8SDavid Howells struct afs_server { 487d2ddc776SDavid Howells struct rcu_head rcu; 488d2ddc776SDavid Howells union { 489d2ddc776SDavid Howells uuid_t uuid; /* Server ID */ 490d2ddc776SDavid Howells struct afs_uuid _uuid; 491d2ddc776SDavid Howells }; 492c435ee34SDavid Howells 493d2ddc776SDavid Howells struct afs_addr_list __rcu *addresses; 49420325960SDavid Howells struct afs_cell *cell; /* Cell to which belongs (pins ref) */ 4953c4c4075SDavid Howells struct rb_node uuid_rb; /* Link in net->fs_servers */ 4963c4c4075SDavid Howells struct afs_server __rcu *uuid_next; /* Next server with same UUID */ 4973c4c4075SDavid Howells struct afs_server *uuid_prev; /* Previous server with same UUID */ 498f6cbb368SDavid Howells struct list_head probe_link; /* Link in net->fs_probe_list */ 499d2ddc776SDavid Howells struct hlist_node addr4_link; /* Link in net->fs_addresses4 */ 500d2ddc776SDavid Howells struct hlist_node addr6_link; /* Link in net->fs_addresses6 */ 501d2ddc776SDavid Howells struct hlist_node proc_link; /* Link in net->fs_proc */ 502d2ddc776SDavid Howells struct afs_server *gc_next; /* Next server in manager's list */ 503977e5f8eSDavid Howells time64_t unuse_time; /* Time at which last unused */ 504c435ee34SDavid Howells unsigned long flags; 505f3c130e6SDavid Howells #define AFS_SERVER_FL_RESPONDING 0 /* The server is responding */ 50632275d3fSDavid Howells #define AFS_SERVER_FL_UPDATING 1 50732275d3fSDavid Howells #define AFS_SERVER_FL_NEEDS_UPDATE 2 /* Fileserver address list is out of date */ 50832275d3fSDavid Howells #define AFS_SERVER_FL_NOT_READY 4 /* The record is not ready for use */ 50932275d3fSDavid Howells #define AFS_SERVER_FL_NOT_FOUND 5 /* VL server says no such server */ 51032275d3fSDavid Howells #define AFS_SERVER_FL_VL_FAIL 6 /* Failed to access VL server */ 511f2686b09SDavid Howells #define AFS_SERVER_FL_MAY_HAVE_CB 8 /* May have callbacks on this fileserver */ 51232275d3fSDavid Howells #define AFS_SERVER_FL_IS_YFS 16 /* Server is YFS not AFS */ 51332275d3fSDavid Howells #define AFS_SERVER_FL_NO_IBULK 17 /* Fileserver doesn't support FS.InlineBulkStatus */ 51432275d3fSDavid Howells #define AFS_SERVER_FL_NO_RM2 18 /* Fileserver doesn't support YFS.RemoveFile2 */ 515977e5f8eSDavid Howells atomic_t ref; /* Object refcount */ 516977e5f8eSDavid Howells atomic_t active; /* Active user count */ 517d2ddc776SDavid Howells u32 addr_version; /* Address list version */ 518f3c130e6SDavid Howells unsigned int rtt; /* Server's current RTT in uS */ 51945218193SDavid Howells unsigned int debug_id; /* Debugging ID for traces */ 52008e0e7c8SDavid Howells 52108e0e7c8SDavid Howells /* file service access */ 522d2ddc776SDavid Howells rwlock_t fs_lock; /* access lock */ 52308e0e7c8SDavid Howells 52408e0e7c8SDavid Howells /* callback promise management */ 525c435ee34SDavid Howells unsigned cb_s_break; /* Break-everything counter. */ 5263bf0fb6fSDavid Howells 5273bf0fb6fSDavid Howells /* Probe state */ 528f6cbb368SDavid Howells unsigned long probed_at; /* Time last probe was dispatched (jiffies) */ 5293bf0fb6fSDavid Howells wait_queue_head_t probe_wq; 5303bf0fb6fSDavid Howells atomic_t probe_outstanding; 5313bf0fb6fSDavid Howells spinlock_t probe_lock; 5323bf0fb6fSDavid Howells struct { 533f3c130e6SDavid Howells unsigned int rtt; /* RTT in uS */ 5343bf0fb6fSDavid Howells u32 abort_code; 5353bf0fb6fSDavid Howells short error; 5363bf0fb6fSDavid Howells bool responded:1; 5373bf0fb6fSDavid Howells bool is_yfs:1; 5383bf0fb6fSDavid Howells bool not_yfs:1; 5393bf0fb6fSDavid Howells bool local_failure:1; 5403bf0fb6fSDavid Howells } probe; 541c435ee34SDavid Howells }; 542c435ee34SDavid Howells 543c435ee34SDavid Howells /* 544194d28cfSDavid Howells * Replaceable volume server list. 54508e0e7c8SDavid Howells */ 546d2ddc776SDavid Howells struct afs_server_entry { 547d2ddc776SDavid Howells struct afs_server *server; 548d2ddc776SDavid Howells }; 549d2ddc776SDavid Howells 550d2ddc776SDavid Howells struct afs_server_list { 551194d28cfSDavid Howells afs_volid_t vids[AFS_MAXTYPES]; /* Volume IDs */ 552d2ddc776SDavid Howells refcount_t usage; 5533bf0fb6fSDavid Howells unsigned char nr_servers; 5543bf0fb6fSDavid Howells unsigned char preferred; /* Preferred server */ 555d2ddc776SDavid Howells unsigned short vnovol_mask; /* Servers to be skipped due to VNOVOL */ 556d2ddc776SDavid Howells unsigned int seq; /* Set to ->servers_seq when installed */ 557d4a96becSDavid Howells rwlock_t lock; 558d2ddc776SDavid Howells struct afs_server_entry servers[]; 55908e0e7c8SDavid Howells }; 56008e0e7c8SDavid Howells 56108e0e7c8SDavid Howells /* 562d2ddc776SDavid Howells * Live AFS volume management. 56308e0e7c8SDavid Howells */ 564d2ddc776SDavid Howells struct afs_volume { 56520325960SDavid Howells union { 56620325960SDavid Howells struct rcu_head rcu; 567d2ddc776SDavid Howells afs_volid_t vid; /* volume ID */ 56820325960SDavid Howells }; 569d2ddc776SDavid Howells atomic_t usage; 570d2ddc776SDavid Howells time64_t update_at; /* Time at which to next update */ 571d2ddc776SDavid Howells struct afs_cell *cell; /* Cell to which belongs (pins ref) */ 57220325960SDavid Howells struct rb_node cell_node; /* Link in cell->volumes */ 57320325960SDavid Howells struct hlist_node proc_link; /* Link in cell->proc_volumes */ 57420325960SDavid Howells struct super_block __rcu *sb; /* Superblock on which inodes reside */ 575d2ddc776SDavid Howells unsigned long flags; 576d2ddc776SDavid Howells #define AFS_VOLUME_NEEDS_UPDATE 0 /* - T if an update needs performing */ 577d2ddc776SDavid Howells #define AFS_VOLUME_UPDATING 1 /* - T if an update is in progress */ 578d2ddc776SDavid Howells #define AFS_VOLUME_WAIT 2 /* - T if users must wait for update */ 579d2ddc776SDavid Howells #define AFS_VOLUME_DELETED 3 /* - T if volume appears deleted */ 580d2ddc776SDavid Howells #define AFS_VOLUME_OFFLINE 4 /* - T if volume offline notice given */ 581d2ddc776SDavid Howells #define AFS_VOLUME_BUSY 5 /* - T if volume busy notice given */ 58220325960SDavid Howells #define AFS_VOLUME_MAYBE_NO_IBULK 6 /* - T if some servers don't have InlineBulkStatus */ 583d2ddc776SDavid Howells #ifdef CONFIG_AFS_FSCACHE 584d2ddc776SDavid Howells struct fscache_cookie *cache; /* caching cookie */ 585d2ddc776SDavid Howells #endif 5868a070a96SDavid Howells struct afs_server_list __rcu *servers; /* List of servers on which volume resides */ 587d2ddc776SDavid Howells rwlock_t servers_lock; /* Lock for ->servers */ 588d2ddc776SDavid Howells unsigned int servers_seq; /* Incremented each time ->servers changes */ 589d2ddc776SDavid Howells 59068251f0aSDavid Howells unsigned cb_v_break; /* Break-everything counter. */ 59190fa9b64SDavid Howells rwlock_t cb_v_break_lock; 59268251f0aSDavid Howells 593d2ddc776SDavid Howells afs_voltype_t type; /* type of volume */ 594d2ddc776SDavid Howells char type_force; /* force volume type (suppress R/O -> R/W) */ 595d2ddc776SDavid Howells u8 name_len; 596d2ddc776SDavid Howells u8 name[AFS_MAXVOLNAME + 1]; /* NUL-padded volume name */ 59708e0e7c8SDavid Howells }; 59808e0e7c8SDavid Howells 5990fafdc9fSDavid Howells enum afs_lock_state { 6000fafdc9fSDavid Howells AFS_VNODE_LOCK_NONE, /* The vnode has no lock on the server */ 6010fafdc9fSDavid Howells AFS_VNODE_LOCK_WAITING_FOR_CB, /* We're waiting for the server to break the callback */ 6020fafdc9fSDavid Howells AFS_VNODE_LOCK_SETTING, /* We're asking the server for a lock */ 6030fafdc9fSDavid Howells AFS_VNODE_LOCK_GRANTED, /* We have a lock on the server */ 6040fafdc9fSDavid Howells AFS_VNODE_LOCK_EXTENDING, /* We're extending a lock on the server */ 6050fafdc9fSDavid Howells AFS_VNODE_LOCK_NEED_UNLOCK, /* We need to unlock on the server */ 6060fafdc9fSDavid Howells AFS_VNODE_LOCK_UNLOCKING, /* We're telling the server to unlock */ 607cdfb26b4SDavid Howells AFS_VNODE_LOCK_DELETED, /* The vnode has been deleted whilst we have a lock */ 6080fafdc9fSDavid Howells }; 6090fafdc9fSDavid Howells 61008e0e7c8SDavid Howells /* 611f8de483eSDavid Howells * AFS inode private data. 612f8de483eSDavid Howells * 613f8de483eSDavid Howells * Note that afs_alloc_inode() *must* reset anything that could incorrectly 614f8de483eSDavid Howells * leak from one inode to another. 61508e0e7c8SDavid Howells */ 61608e0e7c8SDavid Howells struct afs_vnode { 61708e0e7c8SDavid Howells struct inode vfs_inode; /* the VFS's inode record */ 61808e0e7c8SDavid Howells 61908e0e7c8SDavid Howells struct afs_volume *volume; /* volume on which vnode resides */ 62008e0e7c8SDavid Howells struct afs_fid fid; /* the file identifier for this inode */ 62108e0e7c8SDavid Howells struct afs_file_status status; /* AFS status info for this file */ 622a4ff7401SDavid Howells afs_dataversion_t invalid_before; /* Child dentries are invalid before this */ 6239b3f26c9SDavid Howells #ifdef CONFIG_AFS_FSCACHE 6249b3f26c9SDavid Howells struct fscache_cookie *cache; /* caching cookie */ 62508e0e7c8SDavid Howells #endif 626fe342cf7SDavid Howells struct afs_permits __rcu *permit_cache; /* cache of permits so far obtained */ 627d2ddc776SDavid Howells struct mutex io_lock; /* Lock for serialising I/O on this mutex */ 628b61f7dcfSDavid Howells struct rw_semaphore validate_lock; /* lock for validating this vnode */ 62979ddbfa5SDavid Howells struct rw_semaphore rmdir_lock; /* Lock for rmdir vs sillyrename */ 63079ddbfa5SDavid Howells struct key *silly_key; /* Silly rename key */ 6314343d008SDavid Howells spinlock_t wb_lock; /* lock for wb_keys */ 63208e0e7c8SDavid Howells spinlock_t lock; /* waitqueue/flags lock */ 63308e0e7c8SDavid Howells unsigned long flags; 634c435ee34SDavid Howells #define AFS_VNODE_CB_PROMISED 0 /* Set if vnode has a callback promise */ 635260a9803SDavid Howells #define AFS_VNODE_UNSET 1 /* set if vnode attributes not yet set */ 636f3ddee8dSDavid Howells #define AFS_VNODE_DIR_VALID 2 /* Set if dir contents are valid */ 63708e0e7c8SDavid Howells #define AFS_VNODE_ZAP_DATA 3 /* set if vnode's data should be invalidated */ 63808e0e7c8SDavid Howells #define AFS_VNODE_DELETED 4 /* set if vnode deleted on server */ 63908e0e7c8SDavid Howells #define AFS_VNODE_MOUNTPOINT 5 /* set if vnode is a mountpoint symlink */ 6400fafdc9fSDavid Howells #define AFS_VNODE_AUTOCELL 6 /* set if Vnode is an auto mount point */ 6410fafdc9fSDavid Howells #define AFS_VNODE_PSEUDODIR 7 /* set if Vnode is a pseudo directory */ 6425a813276SDavid Howells #define AFS_VNODE_NEW_CONTENT 8 /* Set if file has new content (create/trunc-0) */ 643b6489a49SDavid Howells #define AFS_VNODE_SILLY_DELETED 9 /* Set if file has been silly-deleted */ 64408e0e7c8SDavid Howells 6454343d008SDavid Howells struct list_head wb_keys; /* List of keys available for writeback */ 646e8d6c554SDavid Howells struct list_head pending_locks; /* locks waiting to be granted */ 647e8d6c554SDavid Howells struct list_head granted_locks; /* locks granted on this file */ 648e8d6c554SDavid Howells struct delayed_work lock_work; /* work to be done in locking */ 6490fafdc9fSDavid Howells struct key *lock_key; /* Key to be used in lock ops */ 650a690f60aSDavid Howells ktime_t locked_at; /* Time at which lock obtained */ 6510fafdc9fSDavid Howells enum afs_lock_state lock_state : 8; 6520fafdc9fSDavid Howells afs_lock_type_t lock_type : 8; 65331143d5dSDavid Howells 65408e0e7c8SDavid Howells /* outstanding callback notification on this file */ 65520325960SDavid Howells void *cb_server; /* Server with callback/filelock */ 656c435ee34SDavid Howells unsigned int cb_s_break; /* Mass break counter on ->server */ 65768251f0aSDavid Howells unsigned int cb_v_break; /* Mass break counter on ->volume */ 658c435ee34SDavid Howells unsigned int cb_break; /* Break counter on vnode */ 65920325960SDavid Howells seqlock_t cb_lock; /* Lock for ->cb_server, ->status, ->cb_*break */ 660c435ee34SDavid Howells 661c435ee34SDavid Howells time64_t cb_expires_at; /* time at which callback expires */ 66208e0e7c8SDavid Howells }; 66308e0e7c8SDavid Howells 66412bdcf33SDavid Howells static inline struct fscache_cookie *afs_vnode_cache(struct afs_vnode *vnode) 66512bdcf33SDavid Howells { 66612bdcf33SDavid Howells #ifdef CONFIG_AFS_FSCACHE 66712bdcf33SDavid Howells return vnode->cache; 66812bdcf33SDavid Howells #else 66912bdcf33SDavid Howells return NULL; 67012bdcf33SDavid Howells #endif 67112bdcf33SDavid Howells } 67212bdcf33SDavid Howells 67300d3b7a4SDavid Howells /* 67400d3b7a4SDavid Howells * cached security record for one user's attempt to access a vnode 67500d3b7a4SDavid Howells */ 67600d3b7a4SDavid Howells struct afs_permit { 67700d3b7a4SDavid Howells struct key *key; /* RxRPC ticket holding a security context */ 678be080a6fSDavid Howells afs_access_t access; /* CallerAccess value for this key */ 67900d3b7a4SDavid Howells }; 68000d3b7a4SDavid Howells 68100d3b7a4SDavid Howells /* 682be080a6fSDavid Howells * Immutable cache of CallerAccess records from attempts to access vnodes. 683be080a6fSDavid Howells * These may be shared between multiple vnodes. 68400d3b7a4SDavid Howells */ 68500d3b7a4SDavid Howells struct afs_permits { 686be080a6fSDavid Howells struct rcu_head rcu; 687be080a6fSDavid Howells struct hlist_node hash_node; /* Link in hash */ 688be080a6fSDavid Howells unsigned long h; /* Hash value for this permit list */ 689be080a6fSDavid Howells refcount_t usage; 690be080a6fSDavid Howells unsigned short nr_permits; /* Number of records */ 691be080a6fSDavid Howells bool invalidated; /* Invalidated due to key change */ 692be080a6fSDavid Howells struct afs_permit permits[]; /* List of permits sorted by key pointer */ 69300d3b7a4SDavid Howells }; 69400d3b7a4SDavid Howells 695b908fe6bSDavid Howells /* 6964584ae96SDavid Howells * Error prioritisation and accumulation. 6974584ae96SDavid Howells */ 6984584ae96SDavid Howells struct afs_error { 6994584ae96SDavid Howells short error; /* Accumulated error */ 7004584ae96SDavid Howells bool responded; /* T if server responded */ 7014584ae96SDavid Howells }; 7024584ae96SDavid Howells 7034584ae96SDavid Howells /* 7048b2a464cSDavid Howells * Cursor for iterating over a server's address list. 7058b2a464cSDavid Howells */ 7068b2a464cSDavid Howells struct afs_addr_cursor { 7078b2a464cSDavid Howells struct afs_addr_list *alist; /* Current address list (pins ref) */ 7083bf0fb6fSDavid Howells unsigned long tried; /* Tried addresses */ 7093bf0fb6fSDavid Howells signed char index; /* Current address */ 7108b2a464cSDavid Howells bool responded; /* T if the current address responded */ 711744bcd71SDavid Howells unsigned short nr_iterations; /* Number of address iterations */ 7123bf0fb6fSDavid Howells short error; 7133bf0fb6fSDavid Howells u32 abort_code; 7148b2a464cSDavid Howells }; 7158b2a464cSDavid Howells 7168b2a464cSDavid Howells /* 7170a5143f2SDavid Howells * Cursor for iterating over a set of volume location servers. 7180a5143f2SDavid Howells */ 7190a5143f2SDavid Howells struct afs_vl_cursor { 7200a5143f2SDavid Howells struct afs_addr_cursor ac; 7210a5143f2SDavid Howells struct afs_cell *cell; /* The cell we're querying */ 7220a5143f2SDavid Howells struct afs_vlserver_list *server_list; /* Current server list (pins ref) */ 7233bf0fb6fSDavid Howells struct afs_vlserver *server; /* Server on which this resides */ 7240a5143f2SDavid Howells struct key *key; /* Key for the server */ 7253bf0fb6fSDavid Howells unsigned long untried; /* Bitmask of untried servers */ 7263bf0fb6fSDavid Howells short index; /* Current server */ 7270a5143f2SDavid Howells short error; 7280a5143f2SDavid Howells unsigned short flags; 7290a5143f2SDavid Howells #define AFS_VL_CURSOR_STOP 0x0001 /* Set to cease iteration */ 7300a5143f2SDavid Howells #define AFS_VL_CURSOR_RETRY 0x0002 /* Set to do a retry */ 7310a5143f2SDavid Howells #define AFS_VL_CURSOR_RETRIED 0x0004 /* Set if started a retry */ 732744bcd71SDavid Howells unsigned short nr_iterations; /* Number of server iterations */ 7330a5143f2SDavid Howells }; 7340a5143f2SDavid Howells 7350a5143f2SDavid Howells /* 736e49c7b2fSDavid Howells * Fileserver operation methods. 737e49c7b2fSDavid Howells */ 738e49c7b2fSDavid Howells struct afs_operation_ops { 739e49c7b2fSDavid Howells void (*issue_afs_rpc)(struct afs_operation *op); 740e49c7b2fSDavid Howells void (*issue_yfs_rpc)(struct afs_operation *op); 741e49c7b2fSDavid Howells void (*success)(struct afs_operation *op); 742e49c7b2fSDavid Howells void (*aborted)(struct afs_operation *op); 743e49c7b2fSDavid Howells void (*edit_dir)(struct afs_operation *op); 744e49c7b2fSDavid Howells void (*put)(struct afs_operation *op); 745e49c7b2fSDavid Howells }; 746e49c7b2fSDavid Howells 747e49c7b2fSDavid Howells struct afs_vnode_param { 748e49c7b2fSDavid Howells struct afs_vnode *vnode; 749e49c7b2fSDavid Howells struct afs_fid fid; /* Fid to access */ 750e49c7b2fSDavid Howells struct afs_status_cb scb; /* Returned status and callback promise */ 751e49c7b2fSDavid Howells afs_dataversion_t dv_before; /* Data version before the call */ 752e49c7b2fSDavid Howells unsigned int cb_break_before; /* cb_break + cb_s_break before the call */ 753e49c7b2fSDavid Howells u8 dv_delta; /* Expected change in data version */ 754793fe82eSDavid Howells bool put_vnode:1; /* T if we have a ref on the vnode */ 755793fe82eSDavid Howells bool need_io_lock:1; /* T if we need the I/O lock on this */ 756793fe82eSDavid Howells bool update_ctime:1; /* Need to update the ctime */ 757793fe82eSDavid Howells bool set_size:1; /* Must update i_size */ 758b6489a49SDavid Howells bool op_unlinked:1; /* True if file was unlinked by op */ 759a9e5c87cSDavid Howells bool speculative:1; /* T if speculative status fetch (no vnode lock) */ 760e49c7b2fSDavid Howells }; 761e49c7b2fSDavid Howells 762e49c7b2fSDavid Howells /* 763e49c7b2fSDavid Howells * Fileserver operation wrapper, handling server and address rotation 764e49c7b2fSDavid Howells * asynchronously. May make simultaneous calls to multiple servers. 7658b2a464cSDavid Howells */ 766a310082fSDavid Howells struct afs_operation { 767e49c7b2fSDavid Howells struct afs_net *net; /* Network namespace */ 768e49c7b2fSDavid Howells struct key *key; /* Key for the cell */ 769a58823acSDavid Howells const struct afs_call_type *type; /* Type of call done */ 770e49c7b2fSDavid Howells const struct afs_operation_ops *ops; 771e49c7b2fSDavid Howells 772e49c7b2fSDavid Howells /* Parameters/results for the operation */ 773e49c7b2fSDavid Howells struct afs_volume *volume; /* Volume being accessed */ 774e49c7b2fSDavid Howells struct afs_vnode_param file[2]; 775e49c7b2fSDavid Howells struct afs_vnode_param *more_files; 776e49c7b2fSDavid Howells struct afs_volsync volsync; 777e49c7b2fSDavid Howells struct dentry *dentry; /* Dentry to be altered */ 778e49c7b2fSDavid Howells struct dentry *dentry_2; /* Second dentry to be altered */ 779e49c7b2fSDavid Howells struct timespec64 mtime; /* Modification time to record */ 780da8d0755SDavid Howells struct timespec64 ctime; /* Change time to set */ 781e49c7b2fSDavid Howells short nr_files; /* Number of entries in file[], more_files */ 782e49c7b2fSDavid Howells short error; 783e49c7b2fSDavid Howells unsigned int debug_id; 784e49c7b2fSDavid Howells 785e49c7b2fSDavid Howells unsigned int cb_v_break; /* Volume break counter before op */ 786e49c7b2fSDavid Howells unsigned int cb_s_break; /* Server break counter before op */ 787e49c7b2fSDavid Howells 788e49c7b2fSDavid Howells union { 789e49c7b2fSDavid Howells struct { 790e49c7b2fSDavid Howells int which; /* Which ->file[] to fetch for */ 791e49c7b2fSDavid Howells } fetch_status; 792e49c7b2fSDavid Howells struct { 793e49c7b2fSDavid Howells int reason; /* enum afs_edit_dir_reason */ 794e49c7b2fSDavid Howells mode_t mode; 795e49c7b2fSDavid Howells const char *symlink; 796e49c7b2fSDavid Howells } create; 797e49c7b2fSDavid Howells struct { 798e49c7b2fSDavid Howells bool need_rehash; 799e49c7b2fSDavid Howells } unlink; 800e49c7b2fSDavid Howells struct { 801e49c7b2fSDavid Howells struct dentry *rehash; 802e49c7b2fSDavid Howells struct dentry *tmp; 803e49c7b2fSDavid Howells bool new_negative; 804e49c7b2fSDavid Howells } rename; 805e49c7b2fSDavid Howells struct { 806e49c7b2fSDavid Howells struct afs_read *req; 807e49c7b2fSDavid Howells } fetch; 808e49c7b2fSDavid Howells struct { 809e49c7b2fSDavid Howells afs_lock_type_t type; 810e49c7b2fSDavid Howells } lock; 811e49c7b2fSDavid Howells struct { 812e49c7b2fSDavid Howells struct address_space *mapping; /* Pages being written from */ 813e49c7b2fSDavid Howells pgoff_t first; /* first page in mapping to deal with */ 814e49c7b2fSDavid Howells pgoff_t last; /* last page in mapping to deal with */ 815e49c7b2fSDavid Howells unsigned first_offset; /* offset into mapping[first] */ 816e49c7b2fSDavid Howells unsigned last_to; /* amount of mapping[last] */ 817d383e346SDavid Howells bool laundering; /* Laundering page, PG_writeback not set */ 818e49c7b2fSDavid Howells } store; 819e49c7b2fSDavid Howells struct { 820e49c7b2fSDavid Howells struct iattr *attr; 821ec0fa0b6SDavid Howells loff_t old_i_size; 822e49c7b2fSDavid Howells } setattr; 823e49c7b2fSDavid Howells struct afs_acl *acl; 824e49c7b2fSDavid Howells struct yfs_acl *yacl; 825e49c7b2fSDavid Howells struct { 826e49c7b2fSDavid Howells struct afs_volume_status vs; 827e49c7b2fSDavid Howells struct kstatfs *buf; 828e49c7b2fSDavid Howells } volstatus; 829e49c7b2fSDavid Howells }; 830e49c7b2fSDavid Howells 831e49c7b2fSDavid Howells /* Fileserver iteration state */ 8328b2a464cSDavid Howells struct afs_addr_cursor ac; 833d2ddc776SDavid Howells struct afs_server_list *server_list; /* Current server list (pins ref) */ 83420325960SDavid Howells struct afs_server *server; /* Server we're using (ref pinned by server_list) */ 835e49c7b2fSDavid Howells struct afs_call *call; 8363bf0fb6fSDavid Howells unsigned long untried; /* Bitmask of untried servers */ 8373bf0fb6fSDavid Howells short index; /* Current server */ 838e49c7b2fSDavid Howells unsigned short nr_iterations; /* Number of server iterations */ 839e49c7b2fSDavid Howells 840e49c7b2fSDavid Howells unsigned int flags; 841a310082fSDavid Howells #define AFS_OPERATION_STOP 0x0001 /* Set to cease iteration */ 842a310082fSDavid Howells #define AFS_OPERATION_VBUSY 0x0002 /* Set if seen VBUSY */ 843a310082fSDavid Howells #define AFS_OPERATION_VMOVED 0x0004 /* Set if seen VMOVED */ 844a310082fSDavid Howells #define AFS_OPERATION_VNOVOL 0x0008 /* Set if seen VNOVOL */ 845a310082fSDavid Howells #define AFS_OPERATION_CUR_ONLY 0x0010 /* Set if current server only (file lock held) */ 846a310082fSDavid Howells #define AFS_OPERATION_NO_VSLEEP 0x0020 /* Set to prevent sleep on VBUSY, VOFFLINE, ... */ 847e49c7b2fSDavid Howells #define AFS_OPERATION_UNINTR 0x0040 /* Set if op is uninterruptible */ 848e49c7b2fSDavid Howells #define AFS_OPERATION_DOWNGRADE 0x0080 /* Set to retry with downgraded opcode */ 849e49c7b2fSDavid Howells #define AFS_OPERATION_LOCK_0 0x0100 /* Set if have io_lock on file[0] */ 850e49c7b2fSDavid Howells #define AFS_OPERATION_LOCK_1 0x0200 /* Set if have io_lock on file[1] */ 8518409f67bSDavid Howells #define AFS_OPERATION_TRIED_ALL 0x0400 /* Set if we've tried all the fileservers */ 8528409f67bSDavid Howells #define AFS_OPERATION_RETRY_SERVER 0x0800 /* Set if we should retry the current server */ 853b6489a49SDavid Howells #define AFS_OPERATION_DIR_CONFLICT 0x1000 /* Set if we detected a 3rd-party dir change */ 8548b2a464cSDavid Howells }; 8558b2a464cSDavid Howells 856402cb8ddSDavid Howells /* 857402cb8ddSDavid Howells * Cache auxiliary data. 858402cb8ddSDavid Howells */ 859402cb8ddSDavid Howells struct afs_vnode_cache_aux { 860402cb8ddSDavid Howells u64 data_version; 861402cb8ddSDavid Howells } __packed; 862402cb8ddSDavid Howells 863185f0c70SDavid Howells /* 864185f0c70SDavid Howells * We use page->private to hold the amount of the page that we've written to, 865185f0c70SDavid Howells * splitting the field into two parts. However, we need to represent a range 8662d9900f2SDavid Howells * 0...PAGE_SIZE, so we reduce the resolution if the size of the page 8672d9900f2SDavid Howells * exceeds what we can encode. 868185f0c70SDavid Howells */ 86965dd2d60SDavid Howells #ifdef CONFIG_64BIT 870f86726a6SDavid Howells #define __AFS_PAGE_PRIV_MASK 0x7fffffffUL 871185f0c70SDavid Howells #define __AFS_PAGE_PRIV_SHIFT 32 872f86726a6SDavid Howells #define __AFS_PAGE_PRIV_MMAPPED 0x80000000UL 873185f0c70SDavid Howells #else 874f86726a6SDavid Howells #define __AFS_PAGE_PRIV_MASK 0x7fffUL 875185f0c70SDavid Howells #define __AFS_PAGE_PRIV_SHIFT 16 876f86726a6SDavid Howells #define __AFS_PAGE_PRIV_MMAPPED 0x8000UL 877185f0c70SDavid Howells #endif 878185f0c70SDavid Howells 87967d78a6fSDavid Howells static inline unsigned int afs_page_dirty_resolution(struct page *page) 8802d9900f2SDavid Howells { 88167d78a6fSDavid Howells int shift = thp_order(page) + PAGE_SHIFT - (__AFS_PAGE_PRIV_SHIFT - 1); 8822d9900f2SDavid Howells return (shift > 0) ? shift : 0; 8832d9900f2SDavid Howells } 8842d9900f2SDavid Howells 88567d78a6fSDavid Howells static inline size_t afs_page_dirty_from(struct page *page, unsigned long priv) 886185f0c70SDavid Howells { 8872d9900f2SDavid Howells unsigned long x = priv & __AFS_PAGE_PRIV_MASK; 8882d9900f2SDavid Howells 8892d9900f2SDavid Howells /* The lower bound is inclusive */ 89067d78a6fSDavid Howells return x << afs_page_dirty_resolution(page); 891185f0c70SDavid Howells } 892185f0c70SDavid Howells 89367d78a6fSDavid Howells static inline size_t afs_page_dirty_to(struct page *page, unsigned long priv) 894185f0c70SDavid Howells { 8952d9900f2SDavid Howells unsigned long x = (priv >> __AFS_PAGE_PRIV_SHIFT) & __AFS_PAGE_PRIV_MASK; 8962d9900f2SDavid Howells 8972d9900f2SDavid Howells /* The upper bound is immediately beyond the region */ 89867d78a6fSDavid Howells return (x + 1) << afs_page_dirty_resolution(page); 899185f0c70SDavid Howells } 900185f0c70SDavid Howells 90167d78a6fSDavid Howells static inline unsigned long afs_page_dirty(struct page *page, size_t from, size_t to) 902185f0c70SDavid Howells { 90367d78a6fSDavid Howells unsigned int res = afs_page_dirty_resolution(page); 9042d9900f2SDavid Howells from >>= res; 9052d9900f2SDavid Howells to = (to - 1) >> res; 9062d9900f2SDavid Howells return (to << __AFS_PAGE_PRIV_SHIFT) | from; 907185f0c70SDavid Howells } 908185f0c70SDavid Howells 909f86726a6SDavid Howells static inline unsigned long afs_page_dirty_mmapped(unsigned long priv) 910f86726a6SDavid Howells { 911f86726a6SDavid Howells return priv | __AFS_PAGE_PRIV_MMAPPED; 912f86726a6SDavid Howells } 913f86726a6SDavid Howells 914f86726a6SDavid Howells static inline bool afs_is_page_dirty_mmapped(unsigned long priv) 915f86726a6SDavid Howells { 916f86726a6SDavid Howells return priv & __AFS_PAGE_PRIV_MMAPPED; 917f86726a6SDavid Howells } 918f86726a6SDavid Howells 91998bf40cdSDavid Howells #include <trace/events/afs.h> 92098bf40cdSDavid Howells 92108e0e7c8SDavid Howells /*****************************************************************************/ 92208e0e7c8SDavid Howells /* 9238b2a464cSDavid Howells * addr_list.c 9248b2a464cSDavid Howells */ 9258b2a464cSDavid Howells static inline struct afs_addr_list *afs_get_addrlist(struct afs_addr_list *alist) 9268b2a464cSDavid Howells { 9278b2a464cSDavid Howells if (alist) 9288b2a464cSDavid Howells refcount_inc(&alist->usage); 9298b2a464cSDavid Howells return alist; 9308b2a464cSDavid Howells } 9318b2a464cSDavid Howells extern struct afs_addr_list *afs_alloc_addrlist(unsigned int, 9328b2a464cSDavid Howells unsigned short, 9338b2a464cSDavid Howells unsigned short); 9348b2a464cSDavid Howells extern void afs_put_addrlist(struct afs_addr_list *); 9350a5143f2SDavid Howells extern struct afs_vlserver_list *afs_parse_text_addrs(struct afs_net *, 9360a5143f2SDavid Howells const char *, size_t, char, 9378b2a464cSDavid Howells unsigned short, unsigned short); 9380a5143f2SDavid Howells extern struct afs_vlserver_list *afs_dns_query(struct afs_cell *, time64_t *); 9398b2a464cSDavid Howells extern bool afs_iterate_addresses(struct afs_addr_cursor *); 9408b2a464cSDavid Howells extern int afs_end_cursor(struct afs_addr_cursor *); 9418b2a464cSDavid Howells 942bf99a53cSDavid Howells extern void afs_merge_fs_addr4(struct afs_addr_list *, __be32, u16); 943bf99a53cSDavid Howells extern void afs_merge_fs_addr6(struct afs_addr_list *, __be32 *, u16); 944d2ddc776SDavid Howells 9458b2a464cSDavid Howells /* 9469b3f26c9SDavid Howells * cache.c 9479b3f26c9SDavid Howells */ 9489b3f26c9SDavid Howells #ifdef CONFIG_AFS_FSCACHE 9499b3f26c9SDavid Howells extern struct fscache_netfs afs_cache_netfs; 9509b3f26c9SDavid Howells extern struct fscache_cookie_def afs_cell_cache_index_def; 9519b3f26c9SDavid Howells extern struct fscache_cookie_def afs_volume_cache_index_def; 9529b3f26c9SDavid Howells extern struct fscache_cookie_def afs_vnode_cache_index_def; 9539b3f26c9SDavid Howells #else 9549b3f26c9SDavid Howells #define afs_cell_cache_index_def (*(struct fscache_cookie_def *) NULL) 9559b3f26c9SDavid Howells #define afs_volume_cache_index_def (*(struct fscache_cookie_def *) NULL) 9569b3f26c9SDavid Howells #define afs_vnode_cache_index_def (*(struct fscache_cookie_def *) NULL) 9579b3f26c9SDavid Howells #endif 9589b3f26c9SDavid Howells 9599b3f26c9SDavid Howells /* 96008e0e7c8SDavid Howells * callback.c 96108e0e7c8SDavid Howells */ 96208e0e7c8SDavid Howells extern void afs_init_callback_state(struct afs_server *); 963051d2525SDavid Howells extern void __afs_break_callback(struct afs_vnode *, enum afs_cb_break_reason); 964051d2525SDavid Howells extern void afs_break_callback(struct afs_vnode *, enum afs_cb_break_reason); 9655cf9dd55SDavid Howells extern void afs_break_callbacks(struct afs_server *, size_t, struct afs_callback_break *); 966c435ee34SDavid Howells 96768251f0aSDavid Howells static inline unsigned int afs_calc_vnode_cb_break(struct afs_vnode *vnode) 96868251f0aSDavid Howells { 969eeba1e9cSDavid Howells return vnode->cb_break + vnode->cb_v_break; 97068251f0aSDavid Howells } 97168251f0aSDavid Howells 97218ac6185SDavid Howells static inline bool afs_cb_is_broken(unsigned int cb_break, 97320325960SDavid Howells const struct afs_vnode *vnode) 97468251f0aSDavid Howells { 97520325960SDavid Howells return cb_break != (vnode->cb_break + vnode->volume->cb_v_break); 97668251f0aSDavid Howells } 97768251f0aSDavid Howells 9781da177e4SLinus Torvalds /* 9791da177e4SLinus Torvalds * cell.c 9801da177e4SLinus Torvalds */ 981989782dcSDavid Howells extern int afs_cell_init(struct afs_net *, const char *); 982dca54a7bSDavid Howells extern struct afs_cell *afs_find_cell(struct afs_net *, const char *, unsigned, 983dca54a7bSDavid Howells enum afs_cell_trace); 984989782dcSDavid Howells extern struct afs_cell *afs_lookup_cell(struct afs_net *, const char *, unsigned, 985989782dcSDavid Howells const char *, bool); 986dca54a7bSDavid Howells extern struct afs_cell *afs_use_cell(struct afs_cell *, enum afs_cell_trace); 987dca54a7bSDavid Howells extern void afs_unuse_cell(struct afs_net *, struct afs_cell *, enum afs_cell_trace); 988dca54a7bSDavid Howells extern struct afs_cell *afs_get_cell(struct afs_cell *, enum afs_cell_trace); 989dca54a7bSDavid Howells extern void afs_see_cell(struct afs_cell *, enum afs_cell_trace); 990dca54a7bSDavid Howells extern void afs_put_cell(struct afs_cell *, enum afs_cell_trace); 991dca54a7bSDavid Howells extern void afs_queue_cell(struct afs_cell *, enum afs_cell_trace); 992989782dcSDavid Howells extern void afs_manage_cells(struct work_struct *); 993989782dcSDavid Howells extern void afs_cells_timer(struct timer_list *); 994f044c884SDavid Howells extern void __net_exit afs_cell_purge(struct afs_net *); 99508e0e7c8SDavid Howells 99608e0e7c8SDavid Howells /* 99708e0e7c8SDavid Howells * cmservice.c 99808e0e7c8SDavid Howells */ 99908e0e7c8SDavid Howells extern bool afs_cm_incoming_call(struct afs_call *); 100008e0e7c8SDavid Howells 10011da177e4SLinus Torvalds /* 10021da177e4SLinus Torvalds * dir.c 10031da177e4SLinus Torvalds */ 10044b6f5d20SArjan van de Ven extern const struct file_operations afs_dir_file_operations; 10054d673da1SDavid Howells extern const struct inode_operations afs_dir_inode_operations; 1006f3ddee8dSDavid Howells extern const struct address_space_operations afs_dir_aops; 10074d673da1SDavid Howells extern const struct dentry_operations afs_fs_dentry_operations; 10084d673da1SDavid Howells 100966c7e1d3SDavid Howells extern void afs_d_release(struct dentry *); 1010728279a5SDavid Howells extern void afs_check_for_remote_deletion(struct afs_operation *); 101166c7e1d3SDavid Howells 101266c7e1d3SDavid Howells /* 101363a4681fSDavid Howells * dir_edit.c 101463a4681fSDavid Howells */ 101563a4681fSDavid Howells extern void afs_edit_dir_add(struct afs_vnode *, struct qstr *, struct afs_fid *, 101663a4681fSDavid Howells enum afs_edit_dir_reason); 101763a4681fSDavid Howells extern void afs_edit_dir_remove(struct afs_vnode *, struct qstr *, enum afs_edit_dir_reason); 101863a4681fSDavid Howells 101963a4681fSDavid Howells /* 102079ddbfa5SDavid Howells * dir_silly.c 102179ddbfa5SDavid Howells */ 102279ddbfa5SDavid Howells extern int afs_sillyrename(struct afs_vnode *, struct afs_vnode *, 102379ddbfa5SDavid Howells struct dentry *, struct key *); 102479ddbfa5SDavid Howells extern int afs_silly_iput(struct dentry *, struct inode *); 102579ddbfa5SDavid Howells 102679ddbfa5SDavid Howells /* 102766c7e1d3SDavid Howells * dynroot.c 102866c7e1d3SDavid Howells */ 102966c7e1d3SDavid Howells extern const struct inode_operations afs_dynroot_inode_operations; 103066c7e1d3SDavid Howells extern const struct dentry_operations afs_dynroot_dentry_operations; 103166c7e1d3SDavid Howells 103266c7e1d3SDavid Howells extern struct inode *afs_try_auto_mntpt(struct dentry *, struct inode *); 10330da0b7fdSDavid Howells extern int afs_dynroot_mkdir(struct afs_net *, struct afs_cell *); 10340da0b7fdSDavid Howells extern void afs_dynroot_rmdir(struct afs_net *, struct afs_cell *); 10350da0b7fdSDavid Howells extern int afs_dynroot_populate(struct super_block *); 10360da0b7fdSDavid Howells extern void afs_dynroot_depopulate(struct super_block *); 10371da177e4SLinus Torvalds 10381da177e4SLinus Torvalds /* 10391da177e4SLinus Torvalds * file.c 10401da177e4SLinus Torvalds */ 1041f5e54d6eSChristoph Hellwig extern const struct address_space_operations afs_fs_aops; 1042754661f1SArjan van de Ven extern const struct inode_operations afs_file_inode_operations; 104300d3b7a4SDavid Howells extern const struct file_operations afs_file_operations; 104400d3b7a4SDavid Howells 10454343d008SDavid Howells extern int afs_cache_wb_key(struct afs_vnode *, struct afs_file *); 10464343d008SDavid Howells extern void afs_put_wb_key(struct afs_wb_key *); 104700d3b7a4SDavid Howells extern int afs_open(struct inode *, struct file *); 104800d3b7a4SDavid Howells extern int afs_release(struct inode *, struct file *); 1049*c69bf479SDavid Howells extern int afs_fetch_data(struct afs_vnode *, struct afs_read *); 1050f6d335c0SAl Viro extern int afs_page_filler(void *, struct page *); 1051196ee9cdSDavid Howells extern void afs_put_read(struct afs_read *); 10521da177e4SLinus Torvalds 1053d4438a25SDavid Howells static inline struct afs_read *afs_get_read(struct afs_read *req) 1054d4438a25SDavid Howells { 1055d4438a25SDavid Howells refcount_inc(&req->usage); 1056d4438a25SDavid Howells return req; 1057d4438a25SDavid Howells } 1058d4438a25SDavid Howells 10591da177e4SLinus Torvalds /* 1060e8d6c554SDavid Howells * flock.c 1061e8d6c554SDavid Howells */ 1062f044c884SDavid Howells extern struct workqueue_struct *afs_lock_manager; 1063f044c884SDavid Howells 1064a690f60aSDavid Howells extern void afs_lock_op_done(struct afs_call *); 1065e8d6c554SDavid Howells extern void afs_lock_work(struct work_struct *); 1066e8d6c554SDavid Howells extern void afs_lock_may_be_available(struct afs_vnode *); 1067e8d6c554SDavid Howells extern int afs_lock(struct file *, int, struct file_lock *); 1068e8d6c554SDavid Howells extern int afs_flock(struct file *, int, struct file_lock *); 1069e8d6c554SDavid Howells 1070e8d6c554SDavid Howells /* 107108e0e7c8SDavid Howells * fsclient.c 107208e0e7c8SDavid Howells */ 1073e49c7b2fSDavid Howells extern void afs_fs_fetch_status(struct afs_operation *); 1074e49c7b2fSDavid Howells extern void afs_fs_fetch_data(struct afs_operation *); 1075e49c7b2fSDavid Howells extern void afs_fs_create_file(struct afs_operation *); 1076e49c7b2fSDavid Howells extern void afs_fs_make_dir(struct afs_operation *); 1077e49c7b2fSDavid Howells extern void afs_fs_remove_file(struct afs_operation *); 1078e49c7b2fSDavid Howells extern void afs_fs_remove_dir(struct afs_operation *); 1079e49c7b2fSDavid Howells extern void afs_fs_link(struct afs_operation *); 1080e49c7b2fSDavid Howells extern void afs_fs_symlink(struct afs_operation *); 1081e49c7b2fSDavid Howells extern void afs_fs_rename(struct afs_operation *); 1082e49c7b2fSDavid Howells extern void afs_fs_store_data(struct afs_operation *); 1083e49c7b2fSDavid Howells extern void afs_fs_setattr(struct afs_operation *); 1084e49c7b2fSDavid Howells extern void afs_fs_get_volume_status(struct afs_operation *); 1085e49c7b2fSDavid Howells extern void afs_fs_set_lock(struct afs_operation *); 1086e49c7b2fSDavid Howells extern void afs_fs_extend_lock(struct afs_operation *); 1087e49c7b2fSDavid Howells extern void afs_fs_release_lock(struct afs_operation *); 1088d2ddc776SDavid Howells extern int afs_fs_give_up_all_callbacks(struct afs_net *, struct afs_server *, 1089d2ddc776SDavid Howells struct afs_addr_cursor *, struct key *); 1090f6cbb368SDavid Howells extern bool afs_fs_get_capabilities(struct afs_net *, struct afs_server *, 1091f6cbb368SDavid Howells struct afs_addr_cursor *, struct key *); 1092e49c7b2fSDavid Howells extern void afs_fs_inline_bulk_status(struct afs_operation *); 109308e0e7c8SDavid Howells 1094260f082bSDavid Howells struct afs_acl { 1095260f082bSDavid Howells u32 size; 1096260f082bSDavid Howells u8 data[]; 1097260f082bSDavid Howells }; 1098260f082bSDavid Howells 1099e49c7b2fSDavid Howells extern void afs_fs_fetch_acl(struct afs_operation *); 1100e49c7b2fSDavid Howells extern void afs_fs_store_acl(struct afs_operation *); 1101e49c7b2fSDavid Howells 1102e49c7b2fSDavid Howells /* 1103e49c7b2fSDavid Howells * fs_operation.c 1104e49c7b2fSDavid Howells */ 1105e49c7b2fSDavid Howells extern struct afs_operation *afs_alloc_operation(struct key *, struct afs_volume *); 1106e49c7b2fSDavid Howells extern int afs_put_operation(struct afs_operation *); 1107e49c7b2fSDavid Howells extern bool afs_begin_vnode_operation(struct afs_operation *); 1108e49c7b2fSDavid Howells extern void afs_wait_for_operation(struct afs_operation *); 1109e49c7b2fSDavid Howells extern int afs_do_sync_operation(struct afs_operation *); 1110e49c7b2fSDavid Howells 1111e49c7b2fSDavid Howells static inline void afs_op_nomem(struct afs_operation *op) 1112e49c7b2fSDavid Howells { 1113e49c7b2fSDavid Howells op->error = -ENOMEM; 1114e49c7b2fSDavid Howells } 1115e49c7b2fSDavid Howells 1116e49c7b2fSDavid Howells static inline void afs_op_set_vnode(struct afs_operation *op, unsigned int n, 1117e49c7b2fSDavid Howells struct afs_vnode *vnode) 1118e49c7b2fSDavid Howells { 1119e49c7b2fSDavid Howells op->file[n].vnode = vnode; 1120e49c7b2fSDavid Howells op->file[n].need_io_lock = true; 1121e49c7b2fSDavid Howells } 1122e49c7b2fSDavid Howells 1123e49c7b2fSDavid Howells static inline void afs_op_set_fid(struct afs_operation *op, unsigned int n, 1124e49c7b2fSDavid Howells const struct afs_fid *fid) 1125e49c7b2fSDavid Howells { 1126e49c7b2fSDavid Howells op->file[n].fid = *fid; 1127e49c7b2fSDavid Howells } 1128260f082bSDavid Howells 112908e0e7c8SDavid Howells /* 11303bf0fb6fSDavid Howells * fs_probe.c 11313bf0fb6fSDavid Howells */ 11323bf0fb6fSDavid Howells extern void afs_fileserver_probe_result(struct afs_call *); 1133f6cbb368SDavid Howells extern void afs_fs_probe_fileserver(struct afs_net *, struct afs_server *, struct key *, bool); 11343bf0fb6fSDavid Howells extern int afs_wait_for_fs_probes(struct afs_server_list *, unsigned long); 11358409f67bSDavid Howells extern void afs_probe_fileserver(struct afs_net *, struct afs_server *); 1136f6cbb368SDavid Howells extern void afs_fs_probe_dispatcher(struct work_struct *); 11378409f67bSDavid Howells extern int afs_wait_for_one_fs_probe(struct afs_server *, bool); 11385481fc6eSDavid Howells extern void afs_fs_probe_cleanup(struct afs_net *); 11393bf0fb6fSDavid Howells 11403bf0fb6fSDavid Howells /* 11411da177e4SLinus Torvalds * inode.c 11421da177e4SLinus Torvalds */ 1143b6489a49SDavid Howells extern const struct afs_operation_ops afs_fetch_status_operation; 1144b6489a49SDavid Howells 1145e49c7b2fSDavid Howells extern void afs_vnode_commit_status(struct afs_operation *, struct afs_vnode_param *); 1146a58823acSDavid Howells extern int afs_fetch_status(struct afs_vnode *, struct key *, bool, afs_access_t *); 1147e49c7b2fSDavid Howells extern int afs_ilookup5_test_by_fid(struct inode *, void *); 11484d673da1SDavid Howells extern struct inode *afs_iget_pseudo_dir(struct super_block *, bool); 1149e49c7b2fSDavid Howells extern struct inode *afs_iget(struct afs_operation *, struct afs_vnode_param *); 1150e49c7b2fSDavid Howells extern struct inode *afs_root_iget(struct super_block *, struct key *); 1151c925bd0aSDavid Howells extern bool afs_check_validity(struct afs_vnode *); 1152260a9803SDavid Howells extern int afs_validate(struct afs_vnode *, struct key *); 1153549c7297SChristian Brauner extern int afs_getattr(struct user_namespace *mnt_userns, const struct path *, 1154549c7297SChristian Brauner struct kstat *, u32, unsigned int); 1155549c7297SChristian Brauner extern int afs_setattr(struct user_namespace *mnt_userns, struct dentry *, struct iattr *); 1156b57922d9SAl Viro extern void afs_evict_inode(struct inode *); 1157bec5eb61Swanglei extern int afs_drop_inode(struct inode *); 11581da177e4SLinus Torvalds 11591da177e4SLinus Torvalds /* 11601da177e4SLinus Torvalds * main.c 11611da177e4SLinus Torvalds */ 11620ad53eeeSTejun Heo extern struct workqueue_struct *afs_wq; 11635b86d4ffSDavid Howells extern int afs_net_id; 11645b86d4ffSDavid Howells 11655b86d4ffSDavid Howells static inline struct afs_net *afs_net(struct net *net) 11665b86d4ffSDavid Howells { 11675b86d4ffSDavid Howells return net_generic(net, afs_net_id); 11685b86d4ffSDavid Howells } 11695b86d4ffSDavid Howells 11705b86d4ffSDavid Howells static inline struct afs_net *afs_sb2net(struct super_block *sb) 11715b86d4ffSDavid Howells { 11725b86d4ffSDavid Howells return afs_net(AFS_FS_S(sb)->net_ns); 11735b86d4ffSDavid Howells } 1174f044c884SDavid Howells 1175f044c884SDavid Howells static inline struct afs_net *afs_d2net(struct dentry *dentry) 1176f044c884SDavid Howells { 11775b86d4ffSDavid Howells return afs_sb2net(dentry->d_sb); 1178f044c884SDavid Howells } 1179f044c884SDavid Howells 1180f044c884SDavid Howells static inline struct afs_net *afs_i2net(struct inode *inode) 1181f044c884SDavid Howells { 11825b86d4ffSDavid Howells return afs_sb2net(inode->i_sb); 1183f044c884SDavid Howells } 1184f044c884SDavid Howells 1185f044c884SDavid Howells static inline struct afs_net *afs_v2net(struct afs_vnode *vnode) 1186f044c884SDavid Howells { 11875b86d4ffSDavid Howells return afs_i2net(&vnode->vfs_inode); 1188f044c884SDavid Howells } 1189f044c884SDavid Howells 1190f044c884SDavid Howells static inline struct afs_net *afs_sock2net(struct sock *sk) 1191f044c884SDavid Howells { 11925b86d4ffSDavid Howells return net_generic(sock_net(sk), afs_net_id); 1193f044c884SDavid Howells } 11941da177e4SLinus Torvalds 1195d55b4da4SDavid Howells static inline void __afs_stat(atomic_t *s) 1196d55b4da4SDavid Howells { 1197d55b4da4SDavid Howells atomic_inc(s); 1198d55b4da4SDavid Howells } 1199d55b4da4SDavid Howells 1200d55b4da4SDavid Howells #define afs_stat_v(vnode, n) __afs_stat(&afs_v2net(vnode)->n) 1201d55b4da4SDavid Howells 12021da177e4SLinus Torvalds /* 120308e0e7c8SDavid Howells * misc.c 120408e0e7c8SDavid Howells */ 120508e0e7c8SDavid Howells extern int afs_abort_to_error(u32); 12064584ae96SDavid Howells extern void afs_prioritise_error(struct afs_error *, int, u32); 120708e0e7c8SDavid Howells 120808e0e7c8SDavid Howells /* 12091da177e4SLinus Torvalds * mntpt.c 12101da177e4SLinus Torvalds */ 1211754661f1SArjan van de Ven extern const struct inode_operations afs_mntpt_inode_operations; 1212bec5eb61Swanglei extern const struct inode_operations afs_autocell_inode_operations; 12134b6f5d20SArjan van de Ven extern const struct file_operations afs_mntpt_file_operations; 12141da177e4SLinus Torvalds 1215d18610b0SDavid Howells extern struct vfsmount *afs_d_automount(struct path *); 121608e0e7c8SDavid Howells extern void afs_mntpt_kill_timer(void); 12171da177e4SLinus Torvalds 12181da177e4SLinus Torvalds /* 12191da177e4SLinus Torvalds * proc.c 12201da177e4SLinus Torvalds */ 1221b6cfbecaSDavid Howells #ifdef CONFIG_PROC_FS 1222f044c884SDavid Howells extern int __net_init afs_proc_init(struct afs_net *); 1223f044c884SDavid Howells extern void __net_exit afs_proc_cleanup(struct afs_net *); 12245b86d4ffSDavid Howells extern int afs_proc_cell_setup(struct afs_cell *); 12255b86d4ffSDavid Howells extern void afs_proc_cell_remove(struct afs_cell *); 12266f8880d8SDavid Howells extern void afs_put_sysnames(struct afs_sysnames *); 1227b6cfbecaSDavid Howells #else 1228b6cfbecaSDavid Howells static inline int afs_proc_init(struct afs_net *net) { return 0; } 1229b6cfbecaSDavid Howells static inline void afs_proc_cleanup(struct afs_net *net) {} 1230b6cfbecaSDavid Howells static inline int afs_proc_cell_setup(struct afs_cell *cell) { return 0; } 1231b6cfbecaSDavid Howells static inline void afs_proc_cell_remove(struct afs_cell *cell) {} 1232b6cfbecaSDavid Howells static inline void afs_put_sysnames(struct afs_sysnames *sysnames) {} 1233b6cfbecaSDavid Howells #endif 12341da177e4SLinus Torvalds 123508e0e7c8SDavid Howells /* 1236d2ddc776SDavid Howells * rotate.c 1237d2ddc776SDavid Howells */ 1238a310082fSDavid Howells extern bool afs_select_fileserver(struct afs_operation *); 1239e49c7b2fSDavid Howells extern void afs_dump_edestaddrreq(const struct afs_operation *); 1240d2ddc776SDavid Howells 1241d2ddc776SDavid Howells /* 124208e0e7c8SDavid Howells * rxrpc.c 124308e0e7c8SDavid Howells */ 1244f044c884SDavid Howells extern struct workqueue_struct *afs_async_calls; 12458324f0bcSDavid Howells 1246f044c884SDavid Howells extern int __net_init afs_open_socket(struct afs_net *); 1247f044c884SDavid Howells extern void __net_exit afs_close_socket(struct afs_net *); 1248f044c884SDavid Howells extern void afs_charge_preallocation(struct work_struct *); 1249341f741fSDavid Howells extern void afs_put_call(struct afs_call *); 12500b9bf381SDavid Howells extern void afs_make_call(struct afs_addr_cursor *, struct afs_call *, gfp_t); 12510b9bf381SDavid Howells extern long afs_wait_for_call_to_complete(struct afs_call *, struct afs_addr_cursor *); 1252f044c884SDavid Howells extern struct afs_call *afs_alloc_flat_call(struct afs_net *, 1253f044c884SDavid Howells const struct afs_call_type *, 125408e0e7c8SDavid Howells size_t, size_t); 125508e0e7c8SDavid Howells extern void afs_flat_call_destructor(struct afs_call *); 125608e0e7c8SDavid Howells extern void afs_send_empty_reply(struct afs_call *); 1257b908fe6bSDavid Howells extern void afs_send_simple_reply(struct afs_call *, const void *, size_t); 125812bdcf33SDavid Howells extern int afs_extract_data(struct afs_call *, bool); 12597126ead9SDavid Howells extern int afs_protocol_error(struct afs_call *, enum afs_eproto_cause); 126008e0e7c8SDavid Howells 1261e49c7b2fSDavid Howells static inline void afs_make_op_call(struct afs_operation *op, struct afs_call *call, 1262e49c7b2fSDavid Howells gfp_t gfp) 126320b8391fSDavid Howells { 1264e49c7b2fSDavid Howells op->call = call; 1265a310082fSDavid Howells op->type = call->type; 1266e49c7b2fSDavid Howells call->op = op; 1267e49c7b2fSDavid Howells call->key = op->key; 1268e49c7b2fSDavid Howells call->intr = !(op->flags & AFS_OPERATION_UNINTR); 1269e49c7b2fSDavid Howells afs_make_call(&op->ac, call, gfp); 127020b8391fSDavid Howells } 127120b8391fSDavid Howells 127212bdcf33SDavid Howells static inline void afs_extract_begin(struct afs_call *call, void *buf, size_t size) 127312bdcf33SDavid Howells { 127412bdcf33SDavid Howells call->kvec[0].iov_base = buf; 127512bdcf33SDavid Howells call->kvec[0].iov_len = size; 1276fc276122SDavid Howells iov_iter_kvec(&call->def_iter, READ, call->kvec, 1, size); 127712bdcf33SDavid Howells } 127812bdcf33SDavid Howells 127912bdcf33SDavid Howells static inline void afs_extract_to_tmp(struct afs_call *call) 128012bdcf33SDavid Howells { 128112bdcf33SDavid Howells afs_extract_begin(call, &call->tmp, sizeof(call->tmp)); 128212bdcf33SDavid Howells } 128312bdcf33SDavid Howells 128412bdcf33SDavid Howells static inline void afs_extract_to_tmp64(struct afs_call *call) 128512bdcf33SDavid Howells { 128612bdcf33SDavid Howells afs_extract_begin(call, &call->tmp64, sizeof(call->tmp64)); 128712bdcf33SDavid Howells } 128812bdcf33SDavid Howells 128912bdcf33SDavid Howells static inline void afs_extract_discard(struct afs_call *call, size_t size) 129012bdcf33SDavid Howells { 1291fc276122SDavid Howells iov_iter_discard(&call->def_iter, READ, size); 129212bdcf33SDavid Howells } 129312bdcf33SDavid Howells 129412bdcf33SDavid Howells static inline void afs_extract_to_buf(struct afs_call *call, size_t size) 129512bdcf33SDavid Howells { 129612bdcf33SDavid Howells afs_extract_begin(call, call->buffer, size); 129712bdcf33SDavid Howells } 129812bdcf33SDavid Howells 1299d001648eSDavid Howells static inline int afs_transfer_reply(struct afs_call *call) 1300372ee163SDavid Howells { 130112bdcf33SDavid Howells return afs_extract_data(call, false); 1302372ee163SDavid Howells } 1303372ee163SDavid Howells 130498bf40cdSDavid Howells static inline bool afs_check_call_state(struct afs_call *call, 130598bf40cdSDavid Howells enum afs_call_state state) 130698bf40cdSDavid Howells { 130798bf40cdSDavid Howells return READ_ONCE(call->state) == state; 130898bf40cdSDavid Howells } 130998bf40cdSDavid Howells 131098bf40cdSDavid Howells static inline bool afs_set_call_state(struct afs_call *call, 131198bf40cdSDavid Howells enum afs_call_state from, 131298bf40cdSDavid Howells enum afs_call_state to) 131398bf40cdSDavid Howells { 131498bf40cdSDavid Howells bool ok = false; 131598bf40cdSDavid Howells 131698bf40cdSDavid Howells spin_lock_bh(&call->state_lock); 131798bf40cdSDavid Howells if (call->state == from) { 131898bf40cdSDavid Howells call->state = to; 131998bf40cdSDavid Howells trace_afs_call_state(call, from, to, 0, 0); 132098bf40cdSDavid Howells ok = true; 132198bf40cdSDavid Howells } 132298bf40cdSDavid Howells spin_unlock_bh(&call->state_lock); 132398bf40cdSDavid Howells return ok; 132498bf40cdSDavid Howells } 132598bf40cdSDavid Howells 132698bf40cdSDavid Howells static inline void afs_set_call_complete(struct afs_call *call, 132798bf40cdSDavid Howells int error, u32 remote_abort) 132898bf40cdSDavid Howells { 132998bf40cdSDavid Howells enum afs_call_state state; 133098bf40cdSDavid Howells bool ok = false; 133198bf40cdSDavid Howells 133298bf40cdSDavid Howells spin_lock_bh(&call->state_lock); 133398bf40cdSDavid Howells state = call->state; 133498bf40cdSDavid Howells if (state != AFS_CALL_COMPLETE) { 133598bf40cdSDavid Howells call->abort_code = remote_abort; 133698bf40cdSDavid Howells call->error = error; 133798bf40cdSDavid Howells call->state = AFS_CALL_COMPLETE; 133898bf40cdSDavid Howells trace_afs_call_state(call, state, AFS_CALL_COMPLETE, 133998bf40cdSDavid Howells error, remote_abort); 134098bf40cdSDavid Howells ok = true; 134198bf40cdSDavid Howells } 134298bf40cdSDavid Howells spin_unlock_bh(&call->state_lock); 1343dde9f095SDavid Howells if (ok) { 134498bf40cdSDavid Howells trace_afs_call_done(call); 1345dde9f095SDavid Howells 1346dde9f095SDavid Howells /* Asynchronous calls have two refs to release - one from the alloc and 1347dde9f095SDavid Howells * one queued with the work item - and we can't just deallocate the 1348dde9f095SDavid Howells * call because the work item may be queued again. 1349dde9f095SDavid Howells */ 1350dde9f095SDavid Howells if (call->drop_ref) 1351dde9f095SDavid Howells afs_put_call(call); 1352dde9f095SDavid Howells } 135398bf40cdSDavid Howells } 135498bf40cdSDavid Howells 135508e0e7c8SDavid Howells /* 135600d3b7a4SDavid Howells * security.c 135700d3b7a4SDavid Howells */ 1358be080a6fSDavid Howells extern void afs_put_permits(struct afs_permits *); 135900d3b7a4SDavid Howells extern void afs_clear_permits(struct afs_vnode *); 1360a58823acSDavid Howells extern void afs_cache_permit(struct afs_vnode *, struct key *, unsigned int, 1361a58823acSDavid Howells struct afs_status_cb *); 1362416351f2SDavid Howells extern void afs_zap_permits(struct rcu_head *); 136300d3b7a4SDavid Howells extern struct key *afs_request_key(struct afs_cell *); 13648b6a666aSDavid Howells extern struct key *afs_request_key_rcu(struct afs_cell *); 13650fafdc9fSDavid Howells extern int afs_check_permit(struct afs_vnode *, struct key *, afs_access_t *); 1366549c7297SChristian Brauner extern int afs_permission(struct user_namespace *, struct inode *, int); 1367be080a6fSDavid Howells extern void __exit afs_clean_up_permit_cache(void); 136800d3b7a4SDavid Howells 136900d3b7a4SDavid Howells /* 137008e0e7c8SDavid Howells * server.c 137108e0e7c8SDavid Howells */ 137208e0e7c8SDavid Howells extern spinlock_t afs_server_peer_lock; 137308e0e7c8SDavid Howells 1374f044c884SDavid Howells extern struct afs_server *afs_find_server(struct afs_net *, 1375f044c884SDavid Howells const struct sockaddr_rxrpc *); 1376d2ddc776SDavid Howells extern struct afs_server *afs_find_server_by_uuid(struct afs_net *, const uuid_t *); 137781006805SDavid Howells extern struct afs_server *afs_lookup_server(struct afs_cell *, struct key *, const uuid_t *, u32); 137845218193SDavid Howells extern struct afs_server *afs_get_server(struct afs_server *, enum afs_server_trace); 1379977e5f8eSDavid Howells extern struct afs_server *afs_use_server(struct afs_server *, enum afs_server_trace); 1380977e5f8eSDavid Howells extern void afs_unuse_server(struct afs_net *, struct afs_server *, enum afs_server_trace); 1381977e5f8eSDavid Howells extern void afs_unuse_server_notime(struct afs_net *, struct afs_server *, enum afs_server_trace); 138245218193SDavid Howells extern void afs_put_server(struct afs_net *, struct afs_server *, enum afs_server_trace); 1383d2ddc776SDavid Howells extern void afs_manage_servers(struct work_struct *); 1384d2ddc776SDavid Howells extern void afs_servers_timer(struct timer_list *); 1385f6cbb368SDavid Howells extern void afs_fs_probe_timer(struct timer_list *); 1386f044c884SDavid Howells extern void __net_exit afs_purge_servers(struct afs_net *); 1387a310082fSDavid Howells extern bool afs_check_server_record(struct afs_operation *, struct afs_server *); 1388d2ddc776SDavid Howells 1389f6cbb368SDavid Howells static inline void afs_inc_servers_outstanding(struct afs_net *net) 1390f6cbb368SDavid Howells { 1391f6cbb368SDavid Howells atomic_inc(&net->servers_outstanding); 1392f6cbb368SDavid Howells } 1393f6cbb368SDavid Howells 1394f6cbb368SDavid Howells static inline void afs_dec_servers_outstanding(struct afs_net *net) 1395f6cbb368SDavid Howells { 1396f6cbb368SDavid Howells if (atomic_dec_and_test(&net->servers_outstanding)) 1397f6cbb368SDavid Howells wake_up_var(&net->servers_outstanding); 1398f6cbb368SDavid Howells } 1399f6cbb368SDavid Howells 1400f6cbb368SDavid Howells static inline bool afs_is_probing_server(struct afs_server *server) 1401f6cbb368SDavid Howells { 1402f6cbb368SDavid Howells return list_empty(&server->probe_link); 1403f6cbb368SDavid Howells } 1404f6cbb368SDavid Howells 1405d2ddc776SDavid Howells /* 1406d2ddc776SDavid Howells * server_list.c 1407d2ddc776SDavid Howells */ 1408d2ddc776SDavid Howells static inline struct afs_server_list *afs_get_serverlist(struct afs_server_list *slist) 1409d2ddc776SDavid Howells { 1410d2ddc776SDavid Howells refcount_inc(&slist->usage); 1411d2ddc776SDavid Howells return slist; 1412d2ddc776SDavid Howells } 1413d2ddc776SDavid Howells 1414d2ddc776SDavid Howells extern void afs_put_serverlist(struct afs_net *, struct afs_server_list *); 1415d2ddc776SDavid Howells extern struct afs_server_list *afs_alloc_server_list(struct afs_cell *, struct key *, 1416d2ddc776SDavid Howells struct afs_vldb_entry *, 1417d2ddc776SDavid Howells u8); 1418d2ddc776SDavid Howells extern bool afs_annotate_server_list(struct afs_server_list *, struct afs_server_list *); 141908e0e7c8SDavid Howells 142008e0e7c8SDavid Howells /* 142100d3b7a4SDavid Howells * super.c 142200d3b7a4SDavid Howells */ 1423f044c884SDavid Howells extern int __init afs_fs_init(void); 14245b86d4ffSDavid Howells extern void afs_fs_exit(void); 142500d3b7a4SDavid Howells 142600d3b7a4SDavid Howells /* 142708e0e7c8SDavid Howells * vlclient.c 142808e0e7c8SDavid Howells */ 14290a5143f2SDavid Howells extern struct afs_vldb_entry *afs_vl_get_entry_by_name_u(struct afs_vl_cursor *, 14300a5143f2SDavid Howells const char *, int); 14310a5143f2SDavid Howells extern struct afs_addr_list *afs_vl_get_addrs_u(struct afs_vl_cursor *, const uuid_t *); 14320b9bf381SDavid Howells extern struct afs_call *afs_vl_get_capabilities(struct afs_net *, struct afs_addr_cursor *, 14330b9bf381SDavid Howells struct key *, struct afs_vlserver *, unsigned int); 14340a5143f2SDavid Howells extern struct afs_addr_list *afs_yfsvl_get_endpoints(struct afs_vl_cursor *, const uuid_t *); 1435c3e9f888SDavid Howells extern char *afs_yfsvl_get_cell_name(struct afs_vl_cursor *); 14360a5143f2SDavid Howells 14370a5143f2SDavid Howells /* 14388a070a96SDavid Howells * vl_alias.c 14398a070a96SDavid Howells */ 14408a070a96SDavid Howells extern int afs_cell_detect_alias(struct afs_cell *, struct key *); 14418a070a96SDavid Howells 14428a070a96SDavid Howells /* 14433bf0fb6fSDavid Howells * vl_probe.c 14443bf0fb6fSDavid Howells */ 14453bf0fb6fSDavid Howells extern void afs_vlserver_probe_result(struct afs_call *); 14463bf0fb6fSDavid Howells extern int afs_send_vl_probes(struct afs_net *, struct key *, struct afs_vlserver_list *); 14473bf0fb6fSDavid Howells extern int afs_wait_for_vl_probes(struct afs_vlserver_list *, unsigned long); 14483bf0fb6fSDavid Howells 14493bf0fb6fSDavid Howells /* 14500a5143f2SDavid Howells * vl_rotate.c 14510a5143f2SDavid Howells */ 14520a5143f2SDavid Howells extern bool afs_begin_vlserver_operation(struct afs_vl_cursor *, 14530a5143f2SDavid Howells struct afs_cell *, struct key *); 14540a5143f2SDavid Howells extern bool afs_select_vlserver(struct afs_vl_cursor *); 14550a5143f2SDavid Howells extern bool afs_select_current_vlserver(struct afs_vl_cursor *); 14560a5143f2SDavid Howells extern int afs_end_vlserver_operation(struct afs_vl_cursor *); 14570a5143f2SDavid Howells 14580a5143f2SDavid Howells /* 14590a5143f2SDavid Howells * vlserver_list.c 14600a5143f2SDavid Howells */ 14610a5143f2SDavid Howells static inline struct afs_vlserver *afs_get_vlserver(struct afs_vlserver *vlserver) 14620a5143f2SDavid Howells { 14630a5143f2SDavid Howells atomic_inc(&vlserver->usage); 14640a5143f2SDavid Howells return vlserver; 14650a5143f2SDavid Howells } 14660a5143f2SDavid Howells 14670a5143f2SDavid Howells static inline struct afs_vlserver_list *afs_get_vlserverlist(struct afs_vlserver_list *vllist) 14680a5143f2SDavid Howells { 14690a5143f2SDavid Howells if (vllist) 14700a5143f2SDavid Howells atomic_inc(&vllist->usage); 14710a5143f2SDavid Howells return vllist; 14720a5143f2SDavid Howells } 14730a5143f2SDavid Howells 14740a5143f2SDavid Howells extern struct afs_vlserver *afs_alloc_vlserver(const char *, size_t, unsigned short); 14750a5143f2SDavid Howells extern void afs_put_vlserver(struct afs_net *, struct afs_vlserver *); 14760a5143f2SDavid Howells extern struct afs_vlserver_list *afs_alloc_vlserver_list(unsigned int); 14770a5143f2SDavid Howells extern void afs_put_vlserverlist(struct afs_net *, struct afs_vlserver_list *); 14780a5143f2SDavid Howells extern struct afs_vlserver_list *afs_extract_vlserver_list(struct afs_cell *, 14790a5143f2SDavid Howells const void *, size_t); 148008e0e7c8SDavid Howells 148108e0e7c8SDavid Howells /* 148208e0e7c8SDavid Howells * volume.c 148308e0e7c8SDavid Howells */ 148413fcc683SDavid Howells extern struct afs_volume *afs_create_volume(struct afs_fs_context *); 1485d2ddc776SDavid Howells extern void afs_activate_volume(struct afs_volume *); 1486d2ddc776SDavid Howells extern void afs_deactivate_volume(struct afs_volume *); 1487cca37d45SDavid Howells extern struct afs_volume *afs_get_volume(struct afs_volume *, enum afs_volume_trace); 1488cca37d45SDavid Howells extern void afs_put_volume(struct afs_net *, struct afs_volume *, enum afs_volume_trace); 1489a310082fSDavid Howells extern int afs_check_volume_status(struct afs_volume *, struct afs_operation *); 149008e0e7c8SDavid Howells 149131143d5dSDavid Howells /* 149231143d5dSDavid Howells * write.c 149331143d5dSDavid Howells */ 149431143d5dSDavid Howells extern int afs_set_page_dirty(struct page *); 149515b4650eSNick Piggin extern int afs_write_begin(struct file *file, struct address_space *mapping, 149615b4650eSNick Piggin loff_t pos, unsigned len, unsigned flags, 149715b4650eSNick Piggin struct page **pagep, void **fsdata); 149815b4650eSNick Piggin extern int afs_write_end(struct file *file, struct address_space *mapping, 149915b4650eSNick Piggin loff_t pos, unsigned len, unsigned copied, 150015b4650eSNick Piggin struct page *page, void *fsdata); 150131143d5dSDavid Howells extern int afs_writepage(struct page *, struct writeback_control *); 150231143d5dSDavid Howells extern int afs_writepages(struct address_space *, struct writeback_control *); 150350b5551dSAl Viro extern ssize_t afs_file_write(struct kiocb *, struct iov_iter *); 150402c24a82SJosef Bacik extern int afs_fsync(struct file *, loff_t, loff_t, int); 15050722f186SSouptick Joarder extern vm_fault_t afs_page_mkwrite(struct vm_fault *vmf); 15064343d008SDavid Howells extern void afs_prune_wb_keys(struct afs_vnode *); 15074343d008SDavid Howells extern int afs_launder_page(struct page *); 150831143d5dSDavid Howells 1509d3e3b7eaSDavid Howells /* 1510d3e3b7eaSDavid Howells * xattr.c 1511d3e3b7eaSDavid Howells */ 1512d3e3b7eaSDavid Howells extern const struct xattr_handler *afs_xattr_handlers[]; 151331143d5dSDavid Howells 151430062bd1SDavid Howells /* 151530062bd1SDavid Howells * yfsclient.c 151630062bd1SDavid Howells */ 1517e49c7b2fSDavid Howells extern void yfs_fs_fetch_data(struct afs_operation *); 1518e49c7b2fSDavid Howells extern void yfs_fs_create_file(struct afs_operation *); 1519e49c7b2fSDavid Howells extern void yfs_fs_make_dir(struct afs_operation *); 1520e49c7b2fSDavid Howells extern void yfs_fs_remove_file2(struct afs_operation *); 1521e49c7b2fSDavid Howells extern void yfs_fs_remove_file(struct afs_operation *); 1522e49c7b2fSDavid Howells extern void yfs_fs_remove_dir(struct afs_operation *); 1523e49c7b2fSDavid Howells extern void yfs_fs_link(struct afs_operation *); 1524e49c7b2fSDavid Howells extern void yfs_fs_symlink(struct afs_operation *); 1525e49c7b2fSDavid Howells extern void yfs_fs_rename(struct afs_operation *); 1526e49c7b2fSDavid Howells extern void yfs_fs_store_data(struct afs_operation *); 1527e49c7b2fSDavid Howells extern void yfs_fs_setattr(struct afs_operation *); 1528e49c7b2fSDavid Howells extern void yfs_fs_get_volume_status(struct afs_operation *); 1529e49c7b2fSDavid Howells extern void yfs_fs_set_lock(struct afs_operation *); 1530e49c7b2fSDavid Howells extern void yfs_fs_extend_lock(struct afs_operation *); 1531e49c7b2fSDavid Howells extern void yfs_fs_release_lock(struct afs_operation *); 1532e49c7b2fSDavid Howells extern void yfs_fs_fetch_status(struct afs_operation *); 1533e49c7b2fSDavid Howells extern void yfs_fs_inline_bulk_status(struct afs_operation *); 1534d2ddc776SDavid Howells 1535ae46578bSDavid Howells struct yfs_acl { 1536ae46578bSDavid Howells struct afs_acl *acl; /* Dir/file/symlink ACL */ 1537ae46578bSDavid Howells struct afs_acl *vol_acl; /* Whole volume ACL */ 1538ae46578bSDavid Howells u32 inherit_flag; /* True if ACL is inherited from parent dir */ 1539ae46578bSDavid Howells u32 num_cleaned; /* Number of ACEs removed due to subject removal */ 1540ae46578bSDavid Howells unsigned int flags; 1541ae46578bSDavid Howells #define YFS_ACL_WANT_ACL 0x01 /* Set if caller wants ->acl */ 1542ae46578bSDavid Howells #define YFS_ACL_WANT_VOL_ACL 0x02 /* Set if caller wants ->vol_acl */ 1543ae46578bSDavid Howells }; 1544ae46578bSDavid Howells 1545ae46578bSDavid Howells extern void yfs_free_opaque_acl(struct yfs_acl *); 1546e49c7b2fSDavid Howells extern void yfs_fs_fetch_opaque_acl(struct afs_operation *); 1547e49c7b2fSDavid Howells extern void yfs_fs_store_opaque_acl2(struct afs_operation *); 1548ae46578bSDavid Howells 1549d2ddc776SDavid Howells /* 1550d2ddc776SDavid Howells * Miscellaneous inline functions. 1551d2ddc776SDavid Howells */ 1552d2ddc776SDavid Howells static inline struct afs_vnode *AFS_FS_I(struct inode *inode) 1553d2ddc776SDavid Howells { 1554d2ddc776SDavid Howells return container_of(inode, struct afs_vnode, vfs_inode); 1555d2ddc776SDavid Howells } 1556d2ddc776SDavid Howells 1557d2ddc776SDavid Howells static inline struct inode *AFS_VNODE_TO_I(struct afs_vnode *vnode) 1558d2ddc776SDavid Howells { 1559d2ddc776SDavid Howells return &vnode->vfs_inode; 1560d2ddc776SDavid Howells } 1561d2ddc776SDavid Howells 1562e49c7b2fSDavid Howells /* 1563e49c7b2fSDavid Howells * Note that a dentry got changed. We need to set d_fsdata to the data version 1564e49c7b2fSDavid Howells * number derived from the result of the operation. It doesn't matter if 1565e49c7b2fSDavid Howells * d_fsdata goes backwards as we'll just revalidate. 1566e49c7b2fSDavid Howells */ 1567e49c7b2fSDavid Howells static inline void afs_update_dentry_version(struct afs_operation *op, 1568e49c7b2fSDavid Howells struct afs_vnode_param *dir_vp, 1569e49c7b2fSDavid Howells struct dentry *dentry) 1570e49c7b2fSDavid Howells { 1571e49c7b2fSDavid Howells if (!op->error) 1572e49c7b2fSDavid Howells dentry->d_fsdata = 1573e49c7b2fSDavid Howells (void *)(unsigned long)dir_vp->scb.status.data_version; 1574e49c7b2fSDavid Howells } 1575e49c7b2fSDavid Howells 1576b6489a49SDavid Howells /* 1577b6489a49SDavid Howells * Check for a conflicting operation on a directory that we just unlinked from. 1578b6489a49SDavid Howells * If someone managed to sneak a link or an unlink in on the file we just 1579b6489a49SDavid Howells * unlinked, we won't be able to trust nlink on an AFS file (but not YFS). 1580b6489a49SDavid Howells */ 1581b6489a49SDavid Howells static inline void afs_check_dir_conflict(struct afs_operation *op, 1582b6489a49SDavid Howells struct afs_vnode_param *dvp) 1583b6489a49SDavid Howells { 1584b6489a49SDavid Howells if (dvp->dv_before + dvp->dv_delta != dvp->scb.status.data_version) 1585b6489a49SDavid Howells op->flags |= AFS_OPERATION_DIR_CONFLICT; 1586b6489a49SDavid Howells } 1587b6489a49SDavid Howells 1588f51375cdSDavid Howells static inline int afs_io_error(struct afs_call *call, enum afs_io_error where) 1589f51375cdSDavid Howells { 1590f51375cdSDavid Howells trace_afs_io_error(call->debug_id, -EIO, where); 1591f51375cdSDavid Howells return -EIO; 1592f51375cdSDavid Howells } 1593f51375cdSDavid Howells 1594f51375cdSDavid Howells static inline int afs_bad(struct afs_vnode *vnode, enum afs_file_error where) 1595f51375cdSDavid Howells { 1596f51375cdSDavid Howells trace_afs_file_error(vnode, -EIO, where); 1597f51375cdSDavid Howells return -EIO; 1598f51375cdSDavid Howells } 1599d2ddc776SDavid Howells 160008e0e7c8SDavid Howells /*****************************************************************************/ 160108e0e7c8SDavid Howells /* 160208e0e7c8SDavid Howells * debug tracing 160308e0e7c8SDavid Howells */ 160408e0e7c8SDavid Howells extern unsigned afs_debug; 160508e0e7c8SDavid Howells 160608e0e7c8SDavid Howells #define dbgprintk(FMT,...) \ 1607ad16df84SSven Schnelle printk("[%-6.6s] "FMT"\n", current->comm ,##__VA_ARGS__) 160808e0e7c8SDavid Howells 1609530b6412SHarvey Harrison #define kenter(FMT,...) dbgprintk("==> %s("FMT")",__func__ ,##__VA_ARGS__) 1610530b6412SHarvey Harrison #define kleave(FMT,...) dbgprintk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) 161108e0e7c8SDavid Howells #define kdebug(FMT,...) dbgprintk(" "FMT ,##__VA_ARGS__) 161208e0e7c8SDavid Howells 161308e0e7c8SDavid Howells 161408e0e7c8SDavid Howells #if defined(__KDEBUG) 161508e0e7c8SDavid Howells #define _enter(FMT,...) kenter(FMT,##__VA_ARGS__) 161608e0e7c8SDavid Howells #define _leave(FMT,...) kleave(FMT,##__VA_ARGS__) 161708e0e7c8SDavid Howells #define _debug(FMT,...) kdebug(FMT,##__VA_ARGS__) 161808e0e7c8SDavid Howells 161908e0e7c8SDavid Howells #elif defined(CONFIG_AFS_DEBUG) 162008e0e7c8SDavid Howells #define AFS_DEBUG_KENTER 0x01 162108e0e7c8SDavid Howells #define AFS_DEBUG_KLEAVE 0x02 162208e0e7c8SDavid Howells #define AFS_DEBUG_KDEBUG 0x04 162308e0e7c8SDavid Howells 162408e0e7c8SDavid Howells #define _enter(FMT,...) \ 162508e0e7c8SDavid Howells do { \ 162608e0e7c8SDavid Howells if (unlikely(afs_debug & AFS_DEBUG_KENTER)) \ 162708e0e7c8SDavid Howells kenter(FMT,##__VA_ARGS__); \ 162808e0e7c8SDavid Howells } while (0) 162908e0e7c8SDavid Howells 163008e0e7c8SDavid Howells #define _leave(FMT,...) \ 163108e0e7c8SDavid Howells do { \ 163208e0e7c8SDavid Howells if (unlikely(afs_debug & AFS_DEBUG_KLEAVE)) \ 163308e0e7c8SDavid Howells kleave(FMT,##__VA_ARGS__); \ 163408e0e7c8SDavid Howells } while (0) 163508e0e7c8SDavid Howells 163608e0e7c8SDavid Howells #define _debug(FMT,...) \ 163708e0e7c8SDavid Howells do { \ 163808e0e7c8SDavid Howells if (unlikely(afs_debug & AFS_DEBUG_KDEBUG)) \ 163908e0e7c8SDavid Howells kdebug(FMT,##__VA_ARGS__); \ 164008e0e7c8SDavid Howells } while (0) 164108e0e7c8SDavid Howells 164208e0e7c8SDavid Howells #else 164312fdff3fSDavid Howells #define _enter(FMT,...) no_printk("==> %s("FMT")",__func__ ,##__VA_ARGS__) 164412fdff3fSDavid Howells #define _leave(FMT,...) no_printk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) 164512fdff3fSDavid Howells #define _debug(FMT,...) no_printk(" "FMT ,##__VA_ARGS__) 164608e0e7c8SDavid Howells #endif 164708e0e7c8SDavid Howells 164808e0e7c8SDavid Howells /* 164908e0e7c8SDavid Howells * debug assertion checking 165008e0e7c8SDavid Howells */ 165108e0e7c8SDavid Howells #if 1 // defined(__KDEBUGALL) 165208e0e7c8SDavid Howells 165308e0e7c8SDavid Howells #define ASSERT(X) \ 165408e0e7c8SDavid Howells do { \ 165508e0e7c8SDavid Howells if (unlikely(!(X))) { \ 165608e0e7c8SDavid Howells printk(KERN_ERR "\n"); \ 165708e0e7c8SDavid Howells printk(KERN_ERR "AFS: Assertion failed\n"); \ 165808e0e7c8SDavid Howells BUG(); \ 165908e0e7c8SDavid Howells } \ 166008e0e7c8SDavid Howells } while(0) 166108e0e7c8SDavid Howells 166208e0e7c8SDavid Howells #define ASSERTCMP(X, OP, Y) \ 166308e0e7c8SDavid Howells do { \ 166408e0e7c8SDavid Howells if (unlikely(!((X) OP (Y)))) { \ 166508e0e7c8SDavid Howells printk(KERN_ERR "\n"); \ 166608e0e7c8SDavid Howells printk(KERN_ERR "AFS: Assertion failed\n"); \ 166708e0e7c8SDavid Howells printk(KERN_ERR "%lu " #OP " %lu is false\n", \ 166808e0e7c8SDavid Howells (unsigned long)(X), (unsigned long)(Y)); \ 166908e0e7c8SDavid Howells printk(KERN_ERR "0x%lx " #OP " 0x%lx is false\n", \ 167008e0e7c8SDavid Howells (unsigned long)(X), (unsigned long)(Y)); \ 167108e0e7c8SDavid Howells BUG(); \ 167208e0e7c8SDavid Howells } \ 167308e0e7c8SDavid Howells } while(0) 167408e0e7c8SDavid Howells 1675416351f2SDavid Howells #define ASSERTRANGE(L, OP1, N, OP2, H) \ 1676416351f2SDavid Howells do { \ 1677416351f2SDavid Howells if (unlikely(!((L) OP1 (N)) || !((N) OP2 (H)))) { \ 1678416351f2SDavid Howells printk(KERN_ERR "\n"); \ 1679416351f2SDavid Howells printk(KERN_ERR "AFS: Assertion failed\n"); \ 1680416351f2SDavid Howells printk(KERN_ERR "%lu "#OP1" %lu "#OP2" %lu is false\n", \ 1681416351f2SDavid Howells (unsigned long)(L), (unsigned long)(N), \ 1682416351f2SDavid Howells (unsigned long)(H)); \ 1683416351f2SDavid Howells printk(KERN_ERR "0x%lx "#OP1" 0x%lx "#OP2" 0x%lx is false\n", \ 1684416351f2SDavid Howells (unsigned long)(L), (unsigned long)(N), \ 1685416351f2SDavid Howells (unsigned long)(H)); \ 1686416351f2SDavid Howells BUG(); \ 1687416351f2SDavid Howells } \ 1688416351f2SDavid Howells } while(0) 1689416351f2SDavid Howells 169008e0e7c8SDavid Howells #define ASSERTIF(C, X) \ 169108e0e7c8SDavid Howells do { \ 169208e0e7c8SDavid Howells if (unlikely((C) && !(X))) { \ 169308e0e7c8SDavid Howells printk(KERN_ERR "\n"); \ 169408e0e7c8SDavid Howells printk(KERN_ERR "AFS: Assertion failed\n"); \ 169508e0e7c8SDavid Howells BUG(); \ 169608e0e7c8SDavid Howells } \ 169708e0e7c8SDavid Howells } while(0) 169808e0e7c8SDavid Howells 169908e0e7c8SDavid Howells #define ASSERTIFCMP(C, X, OP, Y) \ 170008e0e7c8SDavid Howells do { \ 170108e0e7c8SDavid Howells if (unlikely((C) && !((X) OP (Y)))) { \ 170208e0e7c8SDavid Howells printk(KERN_ERR "\n"); \ 170308e0e7c8SDavid Howells printk(KERN_ERR "AFS: Assertion failed\n"); \ 170408e0e7c8SDavid Howells printk(KERN_ERR "%lu " #OP " %lu is false\n", \ 170508e0e7c8SDavid Howells (unsigned long)(X), (unsigned long)(Y)); \ 170608e0e7c8SDavid Howells printk(KERN_ERR "0x%lx " #OP " 0x%lx is false\n", \ 170708e0e7c8SDavid Howells (unsigned long)(X), (unsigned long)(Y)); \ 170808e0e7c8SDavid Howells BUG(); \ 170908e0e7c8SDavid Howells } \ 171008e0e7c8SDavid Howells } while(0) 171108e0e7c8SDavid Howells 171208e0e7c8SDavid Howells #else 171308e0e7c8SDavid Howells 171408e0e7c8SDavid Howells #define ASSERT(X) \ 171508e0e7c8SDavid Howells do { \ 171608e0e7c8SDavid Howells } while(0) 171708e0e7c8SDavid Howells 171808e0e7c8SDavid Howells #define ASSERTCMP(X, OP, Y) \ 171908e0e7c8SDavid Howells do { \ 172008e0e7c8SDavid Howells } while(0) 172108e0e7c8SDavid Howells 1722416351f2SDavid Howells #define ASSERTRANGE(L, OP1, N, OP2, H) \ 1723416351f2SDavid Howells do { \ 1724416351f2SDavid Howells } while(0) 1725416351f2SDavid Howells 172608e0e7c8SDavid Howells #define ASSERTIF(C, X) \ 172708e0e7c8SDavid Howells do { \ 172808e0e7c8SDavid Howells } while(0) 172908e0e7c8SDavid Howells 173008e0e7c8SDavid Howells #define ASSERTIFCMP(C, X, OP, Y) \ 173108e0e7c8SDavid Howells do { \ 173208e0e7c8SDavid Howells } while(0) 173308e0e7c8SDavid Howells 173408e0e7c8SDavid Howells #endif /* __KDEBUGALL */ 1735