1ec26815aSDavid Howells /* internal AFS stuff 21da177e4SLinus Torvalds * 308e0e7c8SDavid Howells * Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved. 41da177e4SLinus Torvalds * Written by David Howells (dhowells@redhat.com) 51da177e4SLinus Torvalds * 61da177e4SLinus Torvalds * This program is free software; you can redistribute it and/or 71da177e4SLinus Torvalds * modify it under the terms of the GNU General Public License 81da177e4SLinus Torvalds * as published by the Free Software Foundation; either version 91da177e4SLinus Torvalds * 2 of the License, or (at your option) any later version. 101da177e4SLinus Torvalds */ 111da177e4SLinus Torvalds 121da177e4SLinus Torvalds #include <linux/compiler.h> 131da177e4SLinus Torvalds #include <linux/kernel.h> 141da177e4SLinus Torvalds #include <linux/fs.h> 151da177e4SLinus Torvalds #include <linux/pagemap.h> 1608e0e7c8SDavid Howells #include <linux/skbuff.h> 1708e0e7c8SDavid Howells #include <linux/rxrpc.h> 1800d3b7a4SDavid Howells #include <linux/key.h> 1908e0e7c8SDavid Howells #include "afs.h" 2008e0e7c8SDavid Howells #include "afs_vl.h" 2108e0e7c8SDavid Howells 2208e0e7c8SDavid Howells #define AFS_CELL_MAX_ADDRS 15 2308e0e7c8SDavid Howells 2408e0e7c8SDavid Howells struct afs_call; 2508e0e7c8SDavid Howells 2608e0e7c8SDavid Howells typedef enum { 2708e0e7c8SDavid Howells AFS_VL_NEW, /* new, uninitialised record */ 2808e0e7c8SDavid Howells AFS_VL_CREATING, /* creating record */ 2908e0e7c8SDavid Howells AFS_VL_VALID, /* record is pending */ 3008e0e7c8SDavid Howells AFS_VL_NO_VOLUME, /* no such volume available */ 3108e0e7c8SDavid Howells AFS_VL_UPDATING, /* update in progress */ 3208e0e7c8SDavid Howells AFS_VL_VOLUME_DELETED, /* volume was deleted */ 3308e0e7c8SDavid Howells AFS_VL_UNCERTAIN, /* uncertain state (update failed) */ 3408e0e7c8SDavid Howells } __attribute__((packed)) afs_vlocation_state_t; 351da177e4SLinus Torvalds 3600d3b7a4SDavid Howells struct afs_mount_params { 3700d3b7a4SDavid Howells bool rwpath; /* T if the parent should be considered R/W */ 3800d3b7a4SDavid Howells bool force; /* T to force cell type */ 3900d3b7a4SDavid Howells afs_voltype_t type; /* type of volume requested */ 4000d3b7a4SDavid Howells int volnamesz; /* size of volume name */ 4100d3b7a4SDavid Howells const char *volname; /* name of volume to mount */ 4200d3b7a4SDavid Howells struct afs_cell *cell; /* cell in which to find volume */ 4300d3b7a4SDavid Howells struct afs_volume *volume; /* volume record */ 4400d3b7a4SDavid Howells struct key *key; /* key to use for secure mounting */ 4500d3b7a4SDavid Howells }; 4600d3b7a4SDavid Howells 471da177e4SLinus Torvalds /* 4808e0e7c8SDavid Howells * definition of how to wait for the completion of an operation 491da177e4SLinus Torvalds */ 5008e0e7c8SDavid Howells struct afs_wait_mode { 5108e0e7c8SDavid Howells /* RxRPC received message notification */ 5208e0e7c8SDavid Howells void (*rx_wakeup)(struct afs_call *call); 531da177e4SLinus Torvalds 5408e0e7c8SDavid Howells /* synchronous call waiter and call dispatched notification */ 5508e0e7c8SDavid Howells int (*wait)(struct afs_call *call); 5608e0e7c8SDavid Howells 5708e0e7c8SDavid Howells /* asynchronous call completion */ 5808e0e7c8SDavid Howells void (*async_complete)(void *reply, int error); 5908e0e7c8SDavid Howells }; 6008e0e7c8SDavid Howells 6108e0e7c8SDavid Howells extern const struct afs_wait_mode afs_sync_call; 6208e0e7c8SDavid Howells extern const struct afs_wait_mode afs_async_call; 6308e0e7c8SDavid Howells 6408e0e7c8SDavid Howells /* 6508e0e7c8SDavid Howells * a record of an in-progress RxRPC call 6608e0e7c8SDavid Howells */ 6708e0e7c8SDavid Howells struct afs_call { 6808e0e7c8SDavid Howells const struct afs_call_type *type; /* type of call */ 6908e0e7c8SDavid Howells const struct afs_wait_mode *wait_mode; /* completion wait mode */ 7008e0e7c8SDavid Howells wait_queue_head_t waitq; /* processes awaiting completion */ 7108e0e7c8SDavid Howells struct work_struct async_work; /* asynchronous work processor */ 7208e0e7c8SDavid Howells struct work_struct work; /* actual work processor */ 7308e0e7c8SDavid Howells struct sk_buff_head rx_queue; /* received packets */ 7408e0e7c8SDavid Howells struct rxrpc_call *rxcall; /* RxRPC call handle */ 7508e0e7c8SDavid Howells struct key *key; /* security for this call */ 7608e0e7c8SDavid Howells struct afs_server *server; /* server affected by incoming CM call */ 7708e0e7c8SDavid Howells void *request; /* request data (first part) */ 7808e0e7c8SDavid Howells void *request2; /* request data (second part) */ 7908e0e7c8SDavid Howells void *buffer; /* reply receive buffer */ 8008e0e7c8SDavid Howells void *reply; /* reply buffer (first part) */ 8108e0e7c8SDavid Howells void *reply2; /* reply buffer (second part) */ 8208e0e7c8SDavid Howells void *reply3; /* reply buffer (third part) */ 83260a9803SDavid Howells void *reply4; /* reply buffer (fourth part) */ 8408e0e7c8SDavid Howells enum { /* call state */ 8508e0e7c8SDavid Howells AFS_CALL_REQUESTING, /* request is being sent for outgoing call */ 8608e0e7c8SDavid Howells AFS_CALL_AWAIT_REPLY, /* awaiting reply to outgoing call */ 8708e0e7c8SDavid Howells AFS_CALL_AWAIT_OP_ID, /* awaiting op ID on incoming call */ 8808e0e7c8SDavid Howells AFS_CALL_AWAIT_REQUEST, /* awaiting request data on incoming call */ 8908e0e7c8SDavid Howells AFS_CALL_REPLYING, /* replying to incoming call */ 9008e0e7c8SDavid Howells AFS_CALL_AWAIT_ACK, /* awaiting final ACK of incoming call */ 9108e0e7c8SDavid Howells AFS_CALL_COMPLETE, /* successfully completed */ 9208e0e7c8SDavid Howells AFS_CALL_BUSY, /* server was busy */ 9308e0e7c8SDavid Howells AFS_CALL_ABORTED, /* call was aborted */ 9408e0e7c8SDavid Howells AFS_CALL_ERROR, /* call failed due to error */ 9508e0e7c8SDavid Howells } state; 9608e0e7c8SDavid Howells int error; /* error code */ 9708e0e7c8SDavid Howells unsigned request_size; /* size of request data */ 9808e0e7c8SDavid Howells unsigned reply_max; /* maximum size of reply */ 9908e0e7c8SDavid Howells unsigned reply_size; /* current size of reply */ 10008e0e7c8SDavid Howells unsigned short offset; /* offset into received data store */ 10108e0e7c8SDavid Howells unsigned char unmarshall; /* unmarshalling phase */ 10208e0e7c8SDavid Howells bool incoming; /* T if incoming call */ 10308e0e7c8SDavid Howells u16 service_id; /* RxRPC service ID to call */ 10408e0e7c8SDavid Howells __be16 port; /* target UDP port */ 10508e0e7c8SDavid Howells __be32 operation_ID; /* operation ID for an incoming call */ 10608e0e7c8SDavid Howells u32 count; /* count for use in unmarshalling */ 10708e0e7c8SDavid Howells __be32 tmp; /* place to extract temporary data */ 10808e0e7c8SDavid Howells }; 10908e0e7c8SDavid Howells 11008e0e7c8SDavid Howells struct afs_call_type { 11100d3b7a4SDavid Howells const char *name; 11200d3b7a4SDavid Howells 11308e0e7c8SDavid Howells /* deliver request or reply data to an call 11408e0e7c8SDavid Howells * - returning an error will cause the call to be aborted 11508e0e7c8SDavid Howells */ 11608e0e7c8SDavid Howells int (*deliver)(struct afs_call *call, struct sk_buff *skb, 11708e0e7c8SDavid Howells bool last); 11808e0e7c8SDavid Howells 11908e0e7c8SDavid Howells /* map an abort code to an error number */ 12008e0e7c8SDavid Howells int (*abort_to_error)(u32 abort_code); 12108e0e7c8SDavid Howells 12208e0e7c8SDavid Howells /* clean up a call */ 12308e0e7c8SDavid Howells void (*destructor)(struct afs_call *call); 12408e0e7c8SDavid Howells }; 12508e0e7c8SDavid Howells 12608e0e7c8SDavid Howells /* 12708e0e7c8SDavid Howells * AFS superblock private data 12808e0e7c8SDavid Howells * - there's one superblock per volume 12908e0e7c8SDavid Howells */ 13008e0e7c8SDavid Howells struct afs_super_info { 13108e0e7c8SDavid Howells struct afs_volume *volume; /* volume record */ 13208e0e7c8SDavid Howells char rwparent; /* T if parent is R/W AFS volume */ 13308e0e7c8SDavid Howells }; 13408e0e7c8SDavid Howells 13508e0e7c8SDavid Howells static inline struct afs_super_info *AFS_FS_S(struct super_block *sb) 13608e0e7c8SDavid Howells { 13708e0e7c8SDavid Howells return sb->s_fs_info; 13808e0e7c8SDavid Howells } 13908e0e7c8SDavid Howells 14008e0e7c8SDavid Howells extern struct file_system_type afs_fs_type; 14108e0e7c8SDavid Howells 14208e0e7c8SDavid Howells /* 14308e0e7c8SDavid Howells * entry in the cached cell catalogue 14408e0e7c8SDavid Howells */ 14508e0e7c8SDavid Howells struct afs_cache_cell { 14600d3b7a4SDavid Howells char name[AFS_MAXCELLNAME]; /* cell name (padded with NULs) */ 14708e0e7c8SDavid Howells struct in_addr vl_servers[15]; /* cached cell VL servers */ 14808e0e7c8SDavid Howells }; 14908e0e7c8SDavid Howells 15008e0e7c8SDavid Howells /* 15108e0e7c8SDavid Howells * AFS cell record 15208e0e7c8SDavid Howells */ 15308e0e7c8SDavid Howells struct afs_cell { 15408e0e7c8SDavid Howells atomic_t usage; 15508e0e7c8SDavid Howells struct list_head link; /* main cell list link */ 15600d3b7a4SDavid Howells struct key *anonymous_key; /* anonymous user key for this cell */ 15708e0e7c8SDavid Howells struct list_head proc_link; /* /proc cell list link */ 15808e0e7c8SDavid Howells struct proc_dir_entry *proc_dir; /* /proc dir for this cell */ 15908e0e7c8SDavid Howells #ifdef AFS_CACHING_SUPPORT 16008e0e7c8SDavid Howells struct cachefs_cookie *cache; /* caching cookie */ 1611da177e4SLinus Torvalds #endif 1621da177e4SLinus Torvalds 16308e0e7c8SDavid Howells /* server record management */ 16408e0e7c8SDavid Howells rwlock_t servers_lock; /* active server list lock */ 16508e0e7c8SDavid Howells struct list_head servers; /* active server list */ 1661da177e4SLinus Torvalds 16708e0e7c8SDavid Howells /* volume location record management */ 16808e0e7c8SDavid Howells struct rw_semaphore vl_sem; /* volume management serialisation semaphore */ 16908e0e7c8SDavid Howells struct list_head vl_list; /* cell's active VL record list */ 17008e0e7c8SDavid Howells spinlock_t vl_lock; /* vl_list lock */ 17108e0e7c8SDavid Howells unsigned short vl_naddrs; /* number of VL servers in addr list */ 17208e0e7c8SDavid Howells unsigned short vl_curr_svix; /* current server index */ 17308e0e7c8SDavid Howells struct in_addr vl_addrs[AFS_CELL_MAX_ADDRS]; /* cell VL server addresses */ 17408e0e7c8SDavid Howells 17508e0e7c8SDavid Howells char name[0]; /* cell name - must go last */ 17608e0e7c8SDavid Howells }; 17708e0e7c8SDavid Howells 17808e0e7c8SDavid Howells /* 17908e0e7c8SDavid Howells * entry in the cached volume location catalogue 18008e0e7c8SDavid Howells */ 18108e0e7c8SDavid Howells struct afs_cache_vlocation { 18200d3b7a4SDavid Howells /* volume name (lowercase, padded with NULs) */ 18300d3b7a4SDavid Howells uint8_t name[AFS_MAXVOLNAME + 1]; 18400d3b7a4SDavid Howells 18508e0e7c8SDavid Howells uint8_t nservers; /* number of entries used in servers[] */ 18608e0e7c8SDavid Howells uint8_t vidmask; /* voltype mask for vid[] */ 18708e0e7c8SDavid Howells uint8_t srvtmask[8]; /* voltype masks for servers[] */ 18808e0e7c8SDavid Howells #define AFS_VOL_VTM_RW 0x01 /* R/W version of the volume is available (on this server) */ 18908e0e7c8SDavid Howells #define AFS_VOL_VTM_RO 0x02 /* R/O version of the volume is available (on this server) */ 19008e0e7c8SDavid Howells #define AFS_VOL_VTM_BAK 0x04 /* backup version of the volume is available (on this server) */ 19108e0e7c8SDavid Howells 19208e0e7c8SDavid Howells afs_volid_t vid[3]; /* volume IDs for R/W, R/O and Bak volumes */ 19308e0e7c8SDavid Howells struct in_addr servers[8]; /* fileserver addresses */ 19408e0e7c8SDavid Howells time_t rtime; /* last retrieval time */ 19508e0e7c8SDavid Howells }; 19608e0e7c8SDavid Howells 19708e0e7c8SDavid Howells /* 19808e0e7c8SDavid Howells * volume -> vnode hash table entry 19908e0e7c8SDavid Howells */ 20008e0e7c8SDavid Howells struct afs_cache_vhash { 20108e0e7c8SDavid Howells afs_voltype_t vtype; /* which volume variation */ 20208e0e7c8SDavid Howells uint8_t hash_bucket; /* which hash bucket this represents */ 20308e0e7c8SDavid Howells } __attribute__((packed)); 20408e0e7c8SDavid Howells 20508e0e7c8SDavid Howells /* 20608e0e7c8SDavid Howells * AFS volume location record 20708e0e7c8SDavid Howells */ 20808e0e7c8SDavid Howells struct afs_vlocation { 20908e0e7c8SDavid Howells atomic_t usage; 21008e0e7c8SDavid Howells time_t time_of_death; /* time at which put reduced usage to 0 */ 21108e0e7c8SDavid Howells struct list_head link; /* link in cell volume location list */ 21208e0e7c8SDavid Howells struct list_head grave; /* link in master graveyard list */ 21308e0e7c8SDavid Howells struct list_head update; /* link in master update list */ 21408e0e7c8SDavid Howells struct afs_cell *cell; /* cell to which volume belongs */ 21508e0e7c8SDavid Howells #ifdef AFS_CACHING_SUPPORT 21608e0e7c8SDavid Howells struct cachefs_cookie *cache; /* caching cookie */ 21708e0e7c8SDavid Howells #endif 21808e0e7c8SDavid Howells struct afs_cache_vlocation vldb; /* volume information DB record */ 21908e0e7c8SDavid Howells struct afs_volume *vols[3]; /* volume access record pointer (index by type) */ 22008e0e7c8SDavid Howells wait_queue_head_t waitq; /* status change waitqueue */ 22108e0e7c8SDavid Howells time_t update_at; /* time at which record should be updated */ 22239bf0949SDavid S. Miller spinlock_t lock; /* access lock */ 22308e0e7c8SDavid Howells afs_vlocation_state_t state; /* volume location state */ 22408e0e7c8SDavid Howells unsigned short upd_rej_cnt; /* ENOMEDIUM count during update */ 22508e0e7c8SDavid Howells unsigned short upd_busy_cnt; /* EBUSY count during update */ 22608e0e7c8SDavid Howells bool valid; /* T if valid */ 22708e0e7c8SDavid Howells }; 22808e0e7c8SDavid Howells 22908e0e7c8SDavid Howells /* 23008e0e7c8SDavid Howells * AFS fileserver record 23108e0e7c8SDavid Howells */ 23208e0e7c8SDavid Howells struct afs_server { 23308e0e7c8SDavid Howells atomic_t usage; 23408e0e7c8SDavid Howells time_t time_of_death; /* time at which put reduced usage to 0 */ 23508e0e7c8SDavid Howells struct in_addr addr; /* server address */ 23608e0e7c8SDavid Howells struct afs_cell *cell; /* cell in which server resides */ 23708e0e7c8SDavid Howells struct list_head link; /* link in cell's server list */ 23808e0e7c8SDavid Howells struct list_head grave; /* link in master graveyard list */ 23908e0e7c8SDavid Howells struct rb_node master_rb; /* link in master by-addr tree */ 24008e0e7c8SDavid Howells struct rw_semaphore sem; /* access lock */ 24108e0e7c8SDavid Howells 24208e0e7c8SDavid Howells /* file service access */ 24308e0e7c8SDavid Howells struct rb_root fs_vnodes; /* vnodes backed by this server (ordered by FID) */ 24408e0e7c8SDavid Howells unsigned long fs_act_jif; /* time at which last activity occurred */ 24508e0e7c8SDavid Howells unsigned long fs_dead_jif; /* time at which no longer to be considered dead */ 24608e0e7c8SDavid Howells spinlock_t fs_lock; /* access lock */ 24708e0e7c8SDavid Howells int fs_state; /* 0 or reason FS currently marked dead (-errno) */ 24808e0e7c8SDavid Howells 24908e0e7c8SDavid Howells /* callback promise management */ 25008e0e7c8SDavid Howells struct rb_root cb_promises; /* vnode expiration list (ordered earliest first) */ 25108e0e7c8SDavid Howells struct delayed_work cb_updater; /* callback updater */ 25208e0e7c8SDavid Howells struct delayed_work cb_break_work; /* collected break dispatcher */ 25308e0e7c8SDavid Howells wait_queue_head_t cb_break_waitq; /* space available in cb_break waitqueue */ 25408e0e7c8SDavid Howells spinlock_t cb_lock; /* access lock */ 25508e0e7c8SDavid Howells struct afs_callback cb_break[64]; /* ring of callbacks awaiting breaking */ 25608e0e7c8SDavid Howells atomic_t cb_break_n; /* number of pending breaks */ 25708e0e7c8SDavid Howells u8 cb_break_head; /* head of callback breaking ring */ 25808e0e7c8SDavid Howells u8 cb_break_tail; /* tail of callback breaking ring */ 25908e0e7c8SDavid Howells }; 26008e0e7c8SDavid Howells 26108e0e7c8SDavid Howells /* 26208e0e7c8SDavid Howells * AFS volume access record 26308e0e7c8SDavid Howells */ 26408e0e7c8SDavid Howells struct afs_volume { 26508e0e7c8SDavid Howells atomic_t usage; 26608e0e7c8SDavid Howells struct afs_cell *cell; /* cell to which belongs (unrefd ptr) */ 26708e0e7c8SDavid Howells struct afs_vlocation *vlocation; /* volume location */ 26808e0e7c8SDavid Howells #ifdef AFS_CACHING_SUPPORT 26908e0e7c8SDavid Howells struct cachefs_cookie *cache; /* caching cookie */ 27008e0e7c8SDavid Howells #endif 27108e0e7c8SDavid Howells afs_volid_t vid; /* volume ID */ 27208e0e7c8SDavid Howells afs_voltype_t type; /* type of volume */ 27308e0e7c8SDavid Howells char type_force; /* force volume type (suppress R/O -> R/W) */ 27408e0e7c8SDavid Howells unsigned short nservers; /* number of server slots filled */ 27508e0e7c8SDavid Howells unsigned short rjservers; /* number of servers discarded due to -ENOMEDIUM */ 27608e0e7c8SDavid Howells struct afs_server *servers[8]; /* servers on which volume resides (ordered) */ 27708e0e7c8SDavid Howells struct rw_semaphore server_sem; /* lock for accessing current server */ 27808e0e7c8SDavid Howells }; 27908e0e7c8SDavid Howells 28008e0e7c8SDavid Howells /* 28108e0e7c8SDavid Howells * vnode catalogue entry 28208e0e7c8SDavid Howells */ 28308e0e7c8SDavid Howells struct afs_cache_vnode { 28408e0e7c8SDavid Howells afs_vnodeid_t vnode_id; /* vnode ID */ 28508e0e7c8SDavid Howells unsigned vnode_unique; /* vnode ID uniquifier */ 28608e0e7c8SDavid Howells afs_dataversion_t data_version; /* data version */ 28708e0e7c8SDavid Howells }; 28808e0e7c8SDavid Howells 28908e0e7c8SDavid Howells /* 29008e0e7c8SDavid Howells * AFS inode private data 29108e0e7c8SDavid Howells */ 29208e0e7c8SDavid Howells struct afs_vnode { 29308e0e7c8SDavid Howells struct inode vfs_inode; /* the VFS's inode record */ 29408e0e7c8SDavid Howells 29508e0e7c8SDavid Howells struct afs_volume *volume; /* volume on which vnode resides */ 29608e0e7c8SDavid Howells struct afs_server *server; /* server currently supplying this file */ 29708e0e7c8SDavid Howells struct afs_fid fid; /* the file identifier for this inode */ 29808e0e7c8SDavid Howells struct afs_file_status status; /* AFS status info for this file */ 29908e0e7c8SDavid Howells #ifdef AFS_CACHING_SUPPORT 30008e0e7c8SDavid Howells struct cachefs_cookie *cache; /* caching cookie */ 30108e0e7c8SDavid Howells #endif 30200d3b7a4SDavid Howells struct afs_permits *permits; /* cache of permits so far obtained */ 30300d3b7a4SDavid Howells struct mutex permits_lock; /* lock for altering permits list */ 304260a9803SDavid Howells struct mutex validate_lock; /* lock for validating this vnode */ 30508e0e7c8SDavid Howells wait_queue_head_t update_waitq; /* status fetch waitqueue */ 306260a9803SDavid Howells int update_cnt; /* number of outstanding ops that will update the 30708e0e7c8SDavid Howells * status */ 30808e0e7c8SDavid Howells spinlock_t lock; /* waitqueue/flags lock */ 30908e0e7c8SDavid Howells unsigned long flags; 31008e0e7c8SDavid Howells #define AFS_VNODE_CB_BROKEN 0 /* set if vnode's callback was broken */ 311260a9803SDavid Howells #define AFS_VNODE_UNSET 1 /* set if vnode attributes not yet set */ 31208e0e7c8SDavid Howells #define AFS_VNODE_MODIFIED 2 /* set if vnode's data modified */ 31308e0e7c8SDavid Howells #define AFS_VNODE_ZAP_DATA 3 /* set if vnode's data should be invalidated */ 31408e0e7c8SDavid Howells #define AFS_VNODE_DELETED 4 /* set if vnode deleted on server */ 31508e0e7c8SDavid Howells #define AFS_VNODE_MOUNTPOINT 5 /* set if vnode is a mountpoint symlink */ 31608e0e7c8SDavid Howells 31700d3b7a4SDavid Howells long acl_order; /* ACL check count (callback break count) */ 31800d3b7a4SDavid Howells 31908e0e7c8SDavid Howells /* outstanding callback notification on this file */ 32008e0e7c8SDavid Howells struct rb_node server_rb; /* link in server->fs_vnodes */ 32108e0e7c8SDavid Howells struct rb_node cb_promise; /* link in server->cb_promises */ 32208e0e7c8SDavid Howells struct work_struct cb_broken_work; /* work to be done on callback break */ 32308e0e7c8SDavid Howells time_t cb_expires; /* time at which callback expires */ 32408e0e7c8SDavid Howells time_t cb_expires_at; /* time used to order cb_promise */ 32508e0e7c8SDavid Howells unsigned cb_version; /* callback version */ 32608e0e7c8SDavid Howells unsigned cb_expiry; /* callback expiry time */ 32708e0e7c8SDavid Howells afs_callback_type_t cb_type; /* type of callback */ 32808e0e7c8SDavid Howells bool cb_promised; /* true if promise still holds */ 32908e0e7c8SDavid Howells }; 33008e0e7c8SDavid Howells 33100d3b7a4SDavid Howells /* 33200d3b7a4SDavid Howells * cached security record for one user's attempt to access a vnode 33300d3b7a4SDavid Howells */ 33400d3b7a4SDavid Howells struct afs_permit { 33500d3b7a4SDavid Howells struct key *key; /* RxRPC ticket holding a security context */ 33600d3b7a4SDavid Howells afs_access_t access_mask; /* access mask for this key */ 33700d3b7a4SDavid Howells }; 33800d3b7a4SDavid Howells 33900d3b7a4SDavid Howells /* 34000d3b7a4SDavid Howells * cache of security records from attempts to access a vnode 34100d3b7a4SDavid Howells */ 34200d3b7a4SDavid Howells struct afs_permits { 34300d3b7a4SDavid Howells struct rcu_head rcu; /* disposal procedure */ 34400d3b7a4SDavid Howells int count; /* number of records */ 34500d3b7a4SDavid Howells struct afs_permit permits[0]; /* the permits so far examined */ 34600d3b7a4SDavid Howells }; 34700d3b7a4SDavid Howells 348b908fe6bSDavid Howells /* 349b908fe6bSDavid Howells * record of one of a system's set of network interfaces 350b908fe6bSDavid Howells */ 351b908fe6bSDavid Howells struct afs_interface { 352b908fe6bSDavid Howells struct in_addr address; /* IPv4 address bound to interface */ 353b908fe6bSDavid Howells struct in_addr netmask; /* netmask applied to address */ 354b908fe6bSDavid Howells unsigned mtu; /* MTU of interface */ 355b908fe6bSDavid Howells }; 356b908fe6bSDavid Howells 357b908fe6bSDavid Howells /* 358b908fe6bSDavid Howells * UUID definition [internet draft] 359b908fe6bSDavid Howells * - the timestamp is a 60-bit value, split 32/16/12, and goes in 100ns 360b908fe6bSDavid Howells * increments since midnight 15th October 1582 361b908fe6bSDavid Howells * - add AFS_UUID_TO_UNIX_TIME to convert unix time in 100ns units to UUID 362b908fe6bSDavid Howells * time 363b908fe6bSDavid Howells * - the clock sequence is a 14-bit counter to avoid duplicate times 364b908fe6bSDavid Howells */ 365b908fe6bSDavid Howells struct afs_uuid { 366b908fe6bSDavid Howells u32 time_low; /* low part of timestamp */ 367b908fe6bSDavid Howells u16 time_mid; /* mid part of timestamp */ 368b908fe6bSDavid Howells u16 time_hi_and_version; /* high part of timestamp and version */ 369b1bdb691SDavid Howells #define AFS_UUID_TO_UNIX_TIME 0x01b21dd213814000ULL 370b908fe6bSDavid Howells #define AFS_UUID_TIMEHI_MASK 0x0fff 371b908fe6bSDavid Howells #define AFS_UUID_VERSION_TIME 0x1000 /* time-based UUID */ 372b908fe6bSDavid Howells #define AFS_UUID_VERSION_NAME 0x3000 /* name-based UUID */ 373b908fe6bSDavid Howells #define AFS_UUID_VERSION_RANDOM 0x4000 /* (pseudo-)random generated UUID */ 374b908fe6bSDavid Howells u8 clock_seq_hi_and_reserved; /* clock seq hi and variant */ 375b908fe6bSDavid Howells #define AFS_UUID_CLOCKHI_MASK 0x3f 376b908fe6bSDavid Howells #define AFS_UUID_VARIANT_STD 0x80 377b908fe6bSDavid Howells u8 clock_seq_low; /* clock seq low */ 378b908fe6bSDavid Howells u8 node[6]; /* spatially unique node ID (MAC addr) */ 379b908fe6bSDavid Howells }; 380b908fe6bSDavid Howells 38108e0e7c8SDavid Howells /*****************************************************************************/ 38208e0e7c8SDavid Howells /* 38308e0e7c8SDavid Howells * callback.c 38408e0e7c8SDavid Howells */ 38508e0e7c8SDavid Howells extern void afs_init_callback_state(struct afs_server *); 38608e0e7c8SDavid Howells extern void afs_broken_callback_work(struct work_struct *); 38708e0e7c8SDavid Howells extern void afs_break_callbacks(struct afs_server *, size_t, 38808e0e7c8SDavid Howells struct afs_callback[]); 389260a9803SDavid Howells extern void afs_discard_callback_on_delete(struct afs_vnode *); 39008e0e7c8SDavid Howells extern void afs_give_up_callback(struct afs_vnode *); 39108e0e7c8SDavid Howells extern void afs_dispatch_give_up_callbacks(struct work_struct *); 39208e0e7c8SDavid Howells extern void afs_flush_callback_breaks(struct afs_server *); 39308e0e7c8SDavid Howells extern int __init afs_callback_update_init(void); 394fbb3fcbaSDavid Howells extern void afs_callback_update_kill(void); 3951da177e4SLinus Torvalds 3961da177e4SLinus Torvalds /* 3971da177e4SLinus Torvalds * cell.c 3981da177e4SLinus Torvalds */ 3991da177e4SLinus Torvalds extern struct rw_semaphore afs_proc_cells_sem; 4001da177e4SLinus Torvalds extern struct list_head afs_proc_cells; 4011da177e4SLinus Torvalds #ifdef AFS_CACHING_SUPPORT 4021da177e4SLinus Torvalds extern struct cachefs_index_def afs_cache_cell_index_def; 4031da177e4SLinus Torvalds #endif 4041da177e4SLinus Torvalds 40508e0e7c8SDavid Howells #define afs_get_cell(C) do { atomic_inc(&(C)->usage); } while(0) 40608e0e7c8SDavid Howells extern int afs_cell_init(char *); 40708e0e7c8SDavid Howells extern struct afs_cell *afs_cell_create(const char *, char *); 40808e0e7c8SDavid Howells extern struct afs_cell *afs_cell_lookup(const char *, unsigned); 40908e0e7c8SDavid Howells extern struct afs_cell *afs_grab_cell(struct afs_cell *); 41008e0e7c8SDavid Howells extern void afs_put_cell(struct afs_cell *); 41108e0e7c8SDavid Howells extern void afs_cell_purge(void); 41208e0e7c8SDavid Howells 41308e0e7c8SDavid Howells /* 41408e0e7c8SDavid Howells * cmservice.c 41508e0e7c8SDavid Howells */ 41608e0e7c8SDavid Howells extern bool afs_cm_incoming_call(struct afs_call *); 41708e0e7c8SDavid Howells 4181da177e4SLinus Torvalds /* 4191da177e4SLinus Torvalds * dir.c 4201da177e4SLinus Torvalds */ 421754661f1SArjan van de Ven extern const struct inode_operations afs_dir_inode_operations; 4224b6f5d20SArjan van de Ven extern const struct file_operations afs_dir_file_operations; 4231da177e4SLinus Torvalds 42400d3b7a4SDavid Howells extern int afs_permission(struct inode *, int, struct nameidata *); 42500d3b7a4SDavid Howells 4261da177e4SLinus Torvalds /* 4271da177e4SLinus Torvalds * file.c 4281da177e4SLinus Torvalds */ 429f5e54d6eSChristoph Hellwig extern const struct address_space_operations afs_fs_aops; 430754661f1SArjan van de Ven extern const struct inode_operations afs_file_inode_operations; 43100d3b7a4SDavid Howells extern const struct file_operations afs_file_operations; 43200d3b7a4SDavid Howells 43300d3b7a4SDavid Howells extern int afs_open(struct inode *, struct file *); 43400d3b7a4SDavid Howells extern int afs_release(struct inode *, struct file *); 4351da177e4SLinus Torvalds 4361da177e4SLinus Torvalds #ifdef AFS_CACHING_SUPPORT 437ec26815aSDavid Howells extern int afs_cache_get_page_cookie(struct page *, struct cachefs_page **); 4381da177e4SLinus Torvalds #endif 4391da177e4SLinus Torvalds 4401da177e4SLinus Torvalds /* 44108e0e7c8SDavid Howells * fsclient.c 44208e0e7c8SDavid Howells */ 44300d3b7a4SDavid Howells extern int afs_fs_fetch_file_status(struct afs_server *, struct key *, 44400d3b7a4SDavid Howells struct afs_vnode *, struct afs_volsync *, 44508e0e7c8SDavid Howells const struct afs_wait_mode *); 44608e0e7c8SDavid Howells extern int afs_fs_give_up_callbacks(struct afs_server *, 44708e0e7c8SDavid Howells const struct afs_wait_mode *); 44800d3b7a4SDavid Howells extern int afs_fs_fetch_data(struct afs_server *, struct key *, 44900d3b7a4SDavid Howells struct afs_vnode *, off_t, size_t, struct page *, 450260a9803SDavid Howells const struct afs_wait_mode *); 451260a9803SDavid Howells extern int afs_fs_create(struct afs_server *, struct key *, 452260a9803SDavid Howells struct afs_vnode *, const char *, umode_t, 453260a9803SDavid Howells struct afs_fid *, struct afs_file_status *, 454260a9803SDavid Howells struct afs_callback *, 455260a9803SDavid Howells const struct afs_wait_mode *); 456260a9803SDavid Howells extern int afs_fs_remove(struct afs_server *, struct key *, 457260a9803SDavid Howells struct afs_vnode *, const char *, bool, 458260a9803SDavid Howells const struct afs_wait_mode *); 459260a9803SDavid Howells extern int afs_fs_link(struct afs_server *, struct key *, struct afs_vnode *, 460260a9803SDavid Howells struct afs_vnode *, const char *, 461260a9803SDavid Howells const struct afs_wait_mode *); 462260a9803SDavid Howells extern int afs_fs_symlink(struct afs_server *, struct key *, 463260a9803SDavid Howells struct afs_vnode *, const char *, const char *, 464260a9803SDavid Howells struct afs_fid *, struct afs_file_status *, 465260a9803SDavid Howells const struct afs_wait_mode *); 466260a9803SDavid Howells extern int afs_fs_rename(struct afs_server *, struct key *, 467260a9803SDavid Howells struct afs_vnode *, const char *, 468260a9803SDavid Howells struct afs_vnode *, const char *, 46908e0e7c8SDavid Howells const struct afs_wait_mode *); 47008e0e7c8SDavid Howells 47108e0e7c8SDavid Howells /* 4721da177e4SLinus Torvalds * inode.c 4731da177e4SLinus Torvalds */ 47400d3b7a4SDavid Howells extern struct inode *afs_iget(struct super_block *, struct key *, 475260a9803SDavid Howells struct afs_fid *, struct afs_file_status *, 476260a9803SDavid Howells struct afs_callback *); 477260a9803SDavid Howells extern int afs_validate(struct afs_vnode *, struct key *); 478ec26815aSDavid Howells extern int afs_inode_getattr(struct vfsmount *, struct dentry *, 479ec26815aSDavid Howells struct kstat *); 48000d3b7a4SDavid Howells extern void afs_zap_permits(struct rcu_head *); 481ec26815aSDavid Howells extern void afs_clear_inode(struct inode *); 4821da177e4SLinus Torvalds 4831da177e4SLinus Torvalds /* 4841da177e4SLinus Torvalds * main.c 4851da177e4SLinus Torvalds */ 486b908fe6bSDavid Howells extern struct afs_uuid afs_uuid; 4871da177e4SLinus Torvalds #ifdef AFS_CACHING_SUPPORT 4881da177e4SLinus Torvalds extern struct cachefs_netfs afs_cache_netfs; 4891da177e4SLinus Torvalds #endif 4901da177e4SLinus Torvalds 4911da177e4SLinus Torvalds /* 49208e0e7c8SDavid Howells * misc.c 49308e0e7c8SDavid Howells */ 49408e0e7c8SDavid Howells extern int afs_abort_to_error(u32); 49508e0e7c8SDavid Howells 49608e0e7c8SDavid Howells /* 4971da177e4SLinus Torvalds * mntpt.c 4981da177e4SLinus Torvalds */ 499754661f1SArjan van de Ven extern const struct inode_operations afs_mntpt_inode_operations; 5004b6f5d20SArjan van de Ven extern const struct file_operations afs_mntpt_file_operations; 5011da177e4SLinus Torvalds extern unsigned long afs_mntpt_expiry_timeout; 5021da177e4SLinus Torvalds 50300d3b7a4SDavid Howells extern int afs_mntpt_check_symlink(struct afs_vnode *, struct key *); 50408e0e7c8SDavid Howells extern void afs_mntpt_kill_timer(void); 50508e0e7c8SDavid Howells extern void afs_umount_begin(struct vfsmount *, int); 5061da177e4SLinus Torvalds 5071da177e4SLinus Torvalds /* 5081da177e4SLinus Torvalds * proc.c 5091da177e4SLinus Torvalds */ 5101da177e4SLinus Torvalds extern int afs_proc_init(void); 5111da177e4SLinus Torvalds extern void afs_proc_cleanup(void); 512ec26815aSDavid Howells extern int afs_proc_cell_setup(struct afs_cell *); 513ec26815aSDavid Howells extern void afs_proc_cell_remove(struct afs_cell *); 5141da177e4SLinus Torvalds 51508e0e7c8SDavid Howells /* 51608e0e7c8SDavid Howells * rxrpc.c 51708e0e7c8SDavid Howells */ 51808e0e7c8SDavid Howells extern int afs_open_socket(void); 51908e0e7c8SDavid Howells extern void afs_close_socket(void); 52008e0e7c8SDavid Howells extern int afs_make_call(struct in_addr *, struct afs_call *, gfp_t, 52108e0e7c8SDavid Howells const struct afs_wait_mode *); 52208e0e7c8SDavid Howells extern struct afs_call *afs_alloc_flat_call(const struct afs_call_type *, 52308e0e7c8SDavid Howells size_t, size_t); 52408e0e7c8SDavid Howells extern void afs_flat_call_destructor(struct afs_call *); 52508e0e7c8SDavid Howells extern void afs_transfer_reply(struct afs_call *, struct sk_buff *); 52608e0e7c8SDavid Howells extern void afs_send_empty_reply(struct afs_call *); 527b908fe6bSDavid Howells extern void afs_send_simple_reply(struct afs_call *, const void *, size_t); 52808e0e7c8SDavid Howells extern int afs_extract_data(struct afs_call *, struct sk_buff *, bool, void *, 52908e0e7c8SDavid Howells size_t); 53008e0e7c8SDavid Howells 53108e0e7c8SDavid Howells /* 53200d3b7a4SDavid Howells * security.c 53300d3b7a4SDavid Howells */ 53400d3b7a4SDavid Howells extern void afs_clear_permits(struct afs_vnode *); 53500d3b7a4SDavid Howells extern void afs_cache_permit(struct afs_vnode *, struct key *, long); 53600d3b7a4SDavid Howells extern struct key *afs_request_key(struct afs_cell *); 53700d3b7a4SDavid Howells extern int afs_permission(struct inode *, int, struct nameidata *); 53800d3b7a4SDavid Howells 53900d3b7a4SDavid Howells /* 54008e0e7c8SDavid Howells * server.c 54108e0e7c8SDavid Howells */ 54208e0e7c8SDavid Howells extern spinlock_t afs_server_peer_lock; 54308e0e7c8SDavid Howells 544260a9803SDavid Howells #define afs_get_server(S) \ 545260a9803SDavid Howells do { \ 546260a9803SDavid Howells _debug("GET SERVER %d", atomic_read(&(S)->usage)); \ 547260a9803SDavid Howells atomic_inc(&(S)->usage); \ 548260a9803SDavid Howells } while(0) 54908e0e7c8SDavid Howells 55008e0e7c8SDavid Howells extern struct afs_server *afs_lookup_server(struct afs_cell *, 55108e0e7c8SDavid Howells const struct in_addr *); 55208e0e7c8SDavid Howells extern struct afs_server *afs_find_server(const struct in_addr *); 55308e0e7c8SDavid Howells extern void afs_put_server(struct afs_server *); 55408e0e7c8SDavid Howells extern void __exit afs_purge_servers(void); 55508e0e7c8SDavid Howells 55608e0e7c8SDavid Howells /* 55700d3b7a4SDavid Howells * super.c 55800d3b7a4SDavid Howells */ 55900d3b7a4SDavid Howells extern int afs_fs_init(void); 56000d3b7a4SDavid Howells extern void afs_fs_exit(void); 56100d3b7a4SDavid Howells 56200d3b7a4SDavid Howells /* 563b908fe6bSDavid Howells * use-rtnetlink.c 564b908fe6bSDavid Howells */ 565b908fe6bSDavid Howells extern int afs_get_ipv4_interfaces(struct afs_interface *, size_t, bool); 566ec9c9485SDavid Howells extern int afs_get_MAC_address(u8 *, size_t); 567b908fe6bSDavid Howells 568b908fe6bSDavid Howells /* 56908e0e7c8SDavid Howells * vlclient.c 57008e0e7c8SDavid Howells */ 57108e0e7c8SDavid Howells #ifdef AFS_CACHING_SUPPORT 57208e0e7c8SDavid Howells extern struct cachefs_index_def afs_vlocation_cache_index_def; 57308e0e7c8SDavid Howells #endif 57408e0e7c8SDavid Howells 57500d3b7a4SDavid Howells extern int afs_vl_get_entry_by_name(struct in_addr *, struct key *, 57600d3b7a4SDavid Howells const char *, struct afs_cache_vlocation *, 57708e0e7c8SDavid Howells const struct afs_wait_mode *); 57800d3b7a4SDavid Howells extern int afs_vl_get_entry_by_id(struct in_addr *, struct key *, 57900d3b7a4SDavid Howells afs_volid_t, afs_voltype_t, 58008e0e7c8SDavid Howells struct afs_cache_vlocation *, 58108e0e7c8SDavid Howells const struct afs_wait_mode *); 58208e0e7c8SDavid Howells 58308e0e7c8SDavid Howells /* 58408e0e7c8SDavid Howells * vlocation.c 58508e0e7c8SDavid Howells */ 58608e0e7c8SDavid Howells #define afs_get_vlocation(V) do { atomic_inc(&(V)->usage); } while(0) 58708e0e7c8SDavid Howells 58808e0e7c8SDavid Howells extern int __init afs_vlocation_update_init(void); 58908e0e7c8SDavid Howells extern struct afs_vlocation *afs_vlocation_lookup(struct afs_cell *, 59000d3b7a4SDavid Howells struct key *, 59108e0e7c8SDavid Howells const char *, size_t); 59208e0e7c8SDavid Howells extern void afs_put_vlocation(struct afs_vlocation *); 593fbb3fcbaSDavid Howells extern void afs_vlocation_purge(void); 59408e0e7c8SDavid Howells 59508e0e7c8SDavid Howells /* 59608e0e7c8SDavid Howells * vnode.c 59708e0e7c8SDavid Howells */ 59808e0e7c8SDavid Howells #ifdef AFS_CACHING_SUPPORT 59908e0e7c8SDavid Howells extern struct cachefs_index_def afs_vnode_cache_index_def; 60008e0e7c8SDavid Howells #endif 60108e0e7c8SDavid Howells 60208e0e7c8SDavid Howells extern struct afs_timer_ops afs_vnode_cb_timed_out_ops; 60308e0e7c8SDavid Howells 60408e0e7c8SDavid Howells static inline struct afs_vnode *AFS_FS_I(struct inode *inode) 60508e0e7c8SDavid Howells { 60608e0e7c8SDavid Howells return container_of(inode, struct afs_vnode, vfs_inode); 60708e0e7c8SDavid Howells } 60808e0e7c8SDavid Howells 60908e0e7c8SDavid Howells static inline struct inode *AFS_VNODE_TO_I(struct afs_vnode *vnode) 61008e0e7c8SDavid Howells { 61108e0e7c8SDavid Howells return &vnode->vfs_inode; 61208e0e7c8SDavid Howells } 61308e0e7c8SDavid Howells 614260a9803SDavid Howells extern void afs_vnode_finalise_status_update(struct afs_vnode *, 615260a9803SDavid Howells struct afs_server *); 61600d3b7a4SDavid Howells extern int afs_vnode_fetch_status(struct afs_vnode *, struct afs_vnode *, 61700d3b7a4SDavid Howells struct key *); 61800d3b7a4SDavid Howells extern int afs_vnode_fetch_data(struct afs_vnode *, struct key *, 61900d3b7a4SDavid Howells off_t, size_t, struct page *); 620260a9803SDavid Howells extern int afs_vnode_create(struct afs_vnode *, struct key *, const char *, 621260a9803SDavid Howells umode_t, struct afs_fid *, struct afs_file_status *, 622260a9803SDavid Howells struct afs_callback *, struct afs_server **); 623260a9803SDavid Howells extern int afs_vnode_remove(struct afs_vnode *, struct key *, const char *, 624260a9803SDavid Howells bool); 625260a9803SDavid Howells extern int afs_vnode_link(struct afs_vnode *, struct afs_vnode *, struct key *, 626260a9803SDavid Howells const char *); 627260a9803SDavid Howells extern int afs_vnode_symlink(struct afs_vnode *, struct key *, const char *, 628260a9803SDavid Howells const char *, struct afs_fid *, 629260a9803SDavid Howells struct afs_file_status *, struct afs_server **); 630260a9803SDavid Howells extern int afs_vnode_rename(struct afs_vnode *, struct afs_vnode *, 631260a9803SDavid Howells struct key *, const char *, const char *); 63208e0e7c8SDavid Howells 63308e0e7c8SDavid Howells /* 63408e0e7c8SDavid Howells * volume.c 63508e0e7c8SDavid Howells */ 63608e0e7c8SDavid Howells #ifdef AFS_CACHING_SUPPORT 63708e0e7c8SDavid Howells extern struct cachefs_index_def afs_volume_cache_index_def; 63808e0e7c8SDavid Howells #endif 63908e0e7c8SDavid Howells 64008e0e7c8SDavid Howells #define afs_get_volume(V) do { atomic_inc(&(V)->usage); } while(0) 64108e0e7c8SDavid Howells 64208e0e7c8SDavid Howells extern void afs_put_volume(struct afs_volume *); 64300d3b7a4SDavid Howells extern struct afs_volume *afs_volume_lookup(struct afs_mount_params *); 64408e0e7c8SDavid Howells extern struct afs_server *afs_volume_pick_fileserver(struct afs_vnode *); 64508e0e7c8SDavid Howells extern int afs_volume_release_fileserver(struct afs_vnode *, 64608e0e7c8SDavid Howells struct afs_server *, int); 64708e0e7c8SDavid Howells 64808e0e7c8SDavid Howells /*****************************************************************************/ 64908e0e7c8SDavid Howells /* 65008e0e7c8SDavid Howells * debug tracing 65108e0e7c8SDavid Howells */ 65208e0e7c8SDavid Howells extern unsigned afs_debug; 65308e0e7c8SDavid Howells 65408e0e7c8SDavid Howells #define dbgprintk(FMT,...) \ 65508e0e7c8SDavid Howells printk("[%x%-6.6s] "FMT"\n", smp_processor_id(), current->comm ,##__VA_ARGS__) 65608e0e7c8SDavid Howells 65708e0e7c8SDavid Howells /* make sure we maintain the format strings, even when debugging is disabled */ 65808e0e7c8SDavid Howells static inline __attribute__((format(printf,1,2))) 65908e0e7c8SDavid Howells void _dbprintk(const char *fmt, ...) 66008e0e7c8SDavid Howells { 66108e0e7c8SDavid Howells } 66208e0e7c8SDavid Howells 66308e0e7c8SDavid Howells #define kenter(FMT,...) dbgprintk("==> %s("FMT")",__FUNCTION__ ,##__VA_ARGS__) 66408e0e7c8SDavid Howells #define kleave(FMT,...) dbgprintk("<== %s()"FMT"",__FUNCTION__ ,##__VA_ARGS__) 66508e0e7c8SDavid Howells #define kdebug(FMT,...) dbgprintk(" "FMT ,##__VA_ARGS__) 66608e0e7c8SDavid Howells 66708e0e7c8SDavid Howells 66808e0e7c8SDavid Howells #if defined(__KDEBUG) 66908e0e7c8SDavid Howells #define _enter(FMT,...) kenter(FMT,##__VA_ARGS__) 67008e0e7c8SDavid Howells #define _leave(FMT,...) kleave(FMT,##__VA_ARGS__) 67108e0e7c8SDavid Howells #define _debug(FMT,...) kdebug(FMT,##__VA_ARGS__) 67208e0e7c8SDavid Howells 67308e0e7c8SDavid Howells #elif defined(CONFIG_AFS_DEBUG) 67408e0e7c8SDavid Howells #define AFS_DEBUG_KENTER 0x01 67508e0e7c8SDavid Howells #define AFS_DEBUG_KLEAVE 0x02 67608e0e7c8SDavid Howells #define AFS_DEBUG_KDEBUG 0x04 67708e0e7c8SDavid Howells 67808e0e7c8SDavid Howells #define _enter(FMT,...) \ 67908e0e7c8SDavid Howells do { \ 68008e0e7c8SDavid Howells if (unlikely(afs_debug & AFS_DEBUG_KENTER)) \ 68108e0e7c8SDavid Howells kenter(FMT,##__VA_ARGS__); \ 68208e0e7c8SDavid Howells } while (0) 68308e0e7c8SDavid Howells 68408e0e7c8SDavid Howells #define _leave(FMT,...) \ 68508e0e7c8SDavid Howells do { \ 68608e0e7c8SDavid Howells if (unlikely(afs_debug & AFS_DEBUG_KLEAVE)) \ 68708e0e7c8SDavid Howells kleave(FMT,##__VA_ARGS__); \ 68808e0e7c8SDavid Howells } while (0) 68908e0e7c8SDavid Howells 69008e0e7c8SDavid Howells #define _debug(FMT,...) \ 69108e0e7c8SDavid Howells do { \ 69208e0e7c8SDavid Howells if (unlikely(afs_debug & AFS_DEBUG_KDEBUG)) \ 69308e0e7c8SDavid Howells kdebug(FMT,##__VA_ARGS__); \ 69408e0e7c8SDavid Howells } while (0) 69508e0e7c8SDavid Howells 69608e0e7c8SDavid Howells #else 69708e0e7c8SDavid Howells #define _enter(FMT,...) _dbprintk("==> %s("FMT")",__FUNCTION__ ,##__VA_ARGS__) 69808e0e7c8SDavid Howells #define _leave(FMT,...) _dbprintk("<== %s()"FMT"",__FUNCTION__ ,##__VA_ARGS__) 69908e0e7c8SDavid Howells #define _debug(FMT,...) _dbprintk(" "FMT ,##__VA_ARGS__) 70008e0e7c8SDavid Howells #endif 70108e0e7c8SDavid Howells 70208e0e7c8SDavid Howells /* 70308e0e7c8SDavid Howells * debug assertion checking 70408e0e7c8SDavid Howells */ 70508e0e7c8SDavid Howells #if 1 // defined(__KDEBUGALL) 70608e0e7c8SDavid Howells 70708e0e7c8SDavid Howells #define ASSERT(X) \ 70808e0e7c8SDavid Howells do { \ 70908e0e7c8SDavid Howells if (unlikely(!(X))) { \ 71008e0e7c8SDavid Howells printk(KERN_ERR "\n"); \ 71108e0e7c8SDavid Howells printk(KERN_ERR "AFS: Assertion failed\n"); \ 71208e0e7c8SDavid Howells BUG(); \ 71308e0e7c8SDavid Howells } \ 71408e0e7c8SDavid Howells } while(0) 71508e0e7c8SDavid Howells 71608e0e7c8SDavid Howells #define ASSERTCMP(X, OP, Y) \ 71708e0e7c8SDavid Howells do { \ 71808e0e7c8SDavid Howells if (unlikely(!((X) OP (Y)))) { \ 71908e0e7c8SDavid Howells printk(KERN_ERR "\n"); \ 72008e0e7c8SDavid Howells printk(KERN_ERR "AFS: Assertion failed\n"); \ 72108e0e7c8SDavid Howells printk(KERN_ERR "%lu " #OP " %lu is false\n", \ 72208e0e7c8SDavid Howells (unsigned long)(X), (unsigned long)(Y)); \ 72308e0e7c8SDavid Howells printk(KERN_ERR "0x%lx " #OP " 0x%lx is false\n", \ 72408e0e7c8SDavid Howells (unsigned long)(X), (unsigned long)(Y)); \ 72508e0e7c8SDavid Howells BUG(); \ 72608e0e7c8SDavid Howells } \ 72708e0e7c8SDavid Howells } while(0) 72808e0e7c8SDavid Howells 72908e0e7c8SDavid Howells #define ASSERTIF(C, X) \ 73008e0e7c8SDavid Howells do { \ 73108e0e7c8SDavid Howells if (unlikely((C) && !(X))) { \ 73208e0e7c8SDavid Howells printk(KERN_ERR "\n"); \ 73308e0e7c8SDavid Howells printk(KERN_ERR "AFS: Assertion failed\n"); \ 73408e0e7c8SDavid Howells BUG(); \ 73508e0e7c8SDavid Howells } \ 73608e0e7c8SDavid Howells } while(0) 73708e0e7c8SDavid Howells 73808e0e7c8SDavid Howells #define ASSERTIFCMP(C, X, OP, Y) \ 73908e0e7c8SDavid Howells do { \ 74008e0e7c8SDavid Howells if (unlikely((C) && !((X) OP (Y)))) { \ 74108e0e7c8SDavid Howells printk(KERN_ERR "\n"); \ 74208e0e7c8SDavid Howells printk(KERN_ERR "AFS: Assertion failed\n"); \ 74308e0e7c8SDavid Howells printk(KERN_ERR "%lu " #OP " %lu is false\n", \ 74408e0e7c8SDavid Howells (unsigned long)(X), (unsigned long)(Y)); \ 74508e0e7c8SDavid Howells printk(KERN_ERR "0x%lx " #OP " 0x%lx is false\n", \ 74608e0e7c8SDavid Howells (unsigned long)(X), (unsigned long)(Y)); \ 74708e0e7c8SDavid Howells BUG(); \ 74808e0e7c8SDavid Howells } \ 74908e0e7c8SDavid Howells } while(0) 75008e0e7c8SDavid Howells 75108e0e7c8SDavid Howells #else 75208e0e7c8SDavid Howells 75308e0e7c8SDavid Howells #define ASSERT(X) \ 75408e0e7c8SDavid Howells do { \ 75508e0e7c8SDavid Howells } while(0) 75608e0e7c8SDavid Howells 75708e0e7c8SDavid Howells #define ASSERTCMP(X, OP, Y) \ 75808e0e7c8SDavid Howells do { \ 75908e0e7c8SDavid Howells } while(0) 76008e0e7c8SDavid Howells 76108e0e7c8SDavid Howells #define ASSERTIF(C, X) \ 76208e0e7c8SDavid Howells do { \ 76308e0e7c8SDavid Howells } while(0) 76408e0e7c8SDavid Howells 76508e0e7c8SDavid Howells #define ASSERTIFCMP(C, X, OP, Y) \ 76608e0e7c8SDavid Howells do { \ 76708e0e7c8SDavid Howells } while(0) 76808e0e7c8SDavid Howells 76908e0e7c8SDavid Howells #endif /* __KDEBUGALL */ 770