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1735 lines
58 KiB
1735 lines
58 KiB
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
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/* internal AFS stuff |
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* |
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* Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved. |
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* Written by David Howells ([email protected]) |
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*/ |
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|
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#include <linux/compiler.h> |
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#include <linux/kernel.h> |
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#include <linux/ktime.h> |
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#include <linux/fs.h> |
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#include <linux/pagemap.h> |
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#include <linux/rxrpc.h> |
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#include <linux/key.h> |
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#include <linux/workqueue.h> |
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#include <linux/sched.h> |
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#include <linux/fscache.h> |
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#include <linux/backing-dev.h> |
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#include <linux/uuid.h> |
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#include <linux/mm_types.h> |
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#include <linux/dns_resolver.h> |
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#include <net/net_namespace.h> |
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#include <net/netns/generic.h> |
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#include <net/sock.h> |
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#include <net/af_rxrpc.h> |
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#include "afs.h" |
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#include "afs_vl.h" |
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#define AFS_CELL_MAX_ADDRS 15 |
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struct pagevec; |
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struct afs_call; |
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/* |
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* Partial file-locking emulation mode. (The problem being that AFS3 only |
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* allows whole-file locks and no upgrading/downgrading). |
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*/ |
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enum afs_flock_mode { |
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afs_flock_mode_unset, |
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afs_flock_mode_local, /* Local locking only */ |
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afs_flock_mode_openafs, /* Don't get server lock for a partial lock */ |
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afs_flock_mode_strict, /* Always get a server lock for a partial lock */ |
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afs_flock_mode_write, /* Get an exclusive server lock for a partial lock */ |
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}; |
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struct afs_fs_context { |
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bool force; /* T to force cell type */ |
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bool autocell; /* T if set auto mount operation */ |
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bool dyn_root; /* T if dynamic root */ |
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bool no_cell; /* T if the source is "none" (for dynroot) */ |
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enum afs_flock_mode flock_mode; /* Partial file-locking emulation mode */ |
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afs_voltype_t type; /* type of volume requested */ |
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unsigned int volnamesz; /* size of volume name */ |
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const char *volname; /* name of volume to mount */ |
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struct afs_net *net; /* the AFS net namespace stuff */ |
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struct afs_cell *cell; /* cell in which to find volume */ |
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struct afs_volume *volume; /* volume record */ |
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struct key *key; /* key to use for secure mounting */ |
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}; |
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enum afs_call_state { |
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AFS_CALL_CL_REQUESTING, /* Client: Request is being sent */ |
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AFS_CALL_CL_AWAIT_REPLY, /* Client: Awaiting reply */ |
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AFS_CALL_CL_PROC_REPLY, /* Client: rxrpc call complete; processing reply */ |
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AFS_CALL_SV_AWAIT_OP_ID, /* Server: Awaiting op ID */ |
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AFS_CALL_SV_AWAIT_REQUEST, /* Server: Awaiting request data */ |
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AFS_CALL_SV_REPLYING, /* Server: Replying */ |
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AFS_CALL_SV_AWAIT_ACK, /* Server: Awaiting final ACK */ |
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AFS_CALL_COMPLETE, /* Completed or failed */ |
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}; |
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/* |
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* List of server addresses. |
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*/ |
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struct afs_addr_list { |
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struct rcu_head rcu; |
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refcount_t usage; |
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u32 version; /* Version */ |
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unsigned char max_addrs; |
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unsigned char nr_addrs; |
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unsigned char preferred; /* Preferred address */ |
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unsigned char nr_ipv4; /* Number of IPv4 addresses */ |
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enum dns_record_source source:8; |
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enum dns_lookup_status status:8; |
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unsigned long failed; /* Mask of addrs that failed locally/ICMP */ |
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unsigned long responded; /* Mask of addrs that responded */ |
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struct sockaddr_rxrpc addrs[]; |
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#define AFS_MAX_ADDRESSES ((unsigned int)(sizeof(unsigned long) * 8)) |
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}; |
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/* |
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* a record of an in-progress RxRPC call |
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*/ |
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struct afs_call { |
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const struct afs_call_type *type; /* type of call */ |
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struct afs_addr_list *alist; /* Address is alist[addr_ix] */ |
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wait_queue_head_t waitq; /* processes awaiting completion */ |
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struct work_struct async_work; /* async I/O processor */ |
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struct work_struct work; /* actual work processor */ |
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struct rxrpc_call *rxcall; /* RxRPC call handle */ |
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struct key *key; /* security for this call */ |
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struct afs_net *net; /* The network namespace */ |
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struct afs_server *server; /* The fileserver record if fs op (pins ref) */ |
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struct afs_vlserver *vlserver; /* The vlserver record if vl op */ |
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void *request; /* request data (first part) */ |
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struct iov_iter def_iter; /* Default buffer/data iterator */ |
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struct iov_iter *iter; /* Iterator currently in use */ |
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union { /* Convenience for ->def_iter */ |
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struct kvec kvec[1]; |
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struct bio_vec bvec[1]; |
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}; |
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void *buffer; /* reply receive buffer */ |
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union { |
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long ret0; /* Value to reply with instead of 0 */ |
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struct afs_addr_list *ret_alist; |
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struct afs_vldb_entry *ret_vldb; |
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char *ret_str; |
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}; |
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struct afs_operation *op; |
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unsigned int server_index; |
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atomic_t usage; |
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enum afs_call_state state; |
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spinlock_t state_lock; |
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int error; /* error code */ |
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u32 abort_code; /* Remote abort ID or 0 */ |
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unsigned int max_lifespan; /* Maximum lifespan to set if not 0 */ |
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unsigned request_size; /* size of request data */ |
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unsigned reply_max; /* maximum size of reply */ |
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unsigned count2; /* count used in unmarshalling */ |
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unsigned char unmarshall; /* unmarshalling phase */ |
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unsigned char addr_ix; /* Address in ->alist */ |
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bool drop_ref; /* T if need to drop ref for incoming call */ |
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bool send_pages; /* T if data from mapping should be sent */ |
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bool need_attention; /* T if RxRPC poked us */ |
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bool async; /* T if asynchronous */ |
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bool upgrade; /* T to request service upgrade */ |
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bool have_reply_time; /* T if have got reply_time */ |
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bool intr; /* T if interruptible */ |
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bool unmarshalling_error; /* T if an unmarshalling error occurred */ |
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u16 service_id; /* Actual service ID (after upgrade) */ |
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unsigned int debug_id; /* Trace ID */ |
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u32 operation_ID; /* operation ID for an incoming call */ |
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u32 count; /* count for use in unmarshalling */ |
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union { /* place to extract temporary data */ |
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struct { |
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__be32 tmp_u; |
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__be32 tmp; |
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} __attribute__((packed)); |
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__be64 tmp64; |
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}; |
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ktime_t reply_time; /* Time of first reply packet */ |
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}; |
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struct afs_call_type { |
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const char *name; |
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unsigned int op; /* Really enum afs_fs_operation */ |
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|
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/* deliver request or reply data to an call |
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* - returning an error will cause the call to be aborted |
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*/ |
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int (*deliver)(struct afs_call *call); |
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/* clean up a call */ |
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void (*destructor)(struct afs_call *call); |
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/* Work function */ |
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void (*work)(struct work_struct *work); |
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/* Call done function (gets called immediately on success or failure) */ |
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void (*done)(struct afs_call *call); |
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}; |
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/* |
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* Key available for writeback on a file. |
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*/ |
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struct afs_wb_key { |
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refcount_t usage; |
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struct key *key; |
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struct list_head vnode_link; /* Link in vnode->wb_keys */ |
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}; |
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/* |
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* AFS open file information record. Pointed to by file->private_data. |
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*/ |
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struct afs_file { |
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struct key *key; /* The key this file was opened with */ |
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struct afs_wb_key *wb; /* Writeback key record for this file */ |
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}; |
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static inline struct key *afs_file_key(struct file *file) |
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{ |
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struct afs_file *af = file->private_data; |
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return af->key; |
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} |
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/* |
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* Record of an outstanding read operation on a vnode. |
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*/ |
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struct afs_read { |
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loff_t pos; /* Where to start reading */ |
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loff_t len; /* How much we're asking for */ |
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loff_t actual_len; /* How much we're actually getting */ |
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loff_t remain; /* Amount remaining */ |
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loff_t file_size; /* File size returned by server */ |
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afs_dataversion_t data_version; /* Version number returned by server */ |
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refcount_t usage; |
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unsigned int index; /* Which page we're reading into */ |
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unsigned int nr_pages; |
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unsigned int offset; /* offset into current page */ |
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struct afs_vnode *vnode; |
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void (*page_done)(struct afs_read *); |
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struct page **pages; |
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struct page *array[]; |
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}; |
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/* |
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* AFS superblock private data |
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* - there's one superblock per volume |
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*/ |
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struct afs_super_info { |
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struct net *net_ns; /* Network namespace */ |
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struct afs_cell *cell; /* The cell in which the volume resides */ |
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struct afs_volume *volume; /* volume record */ |
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enum afs_flock_mode flock_mode:8; /* File locking emulation mode */ |
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bool dyn_root; /* True if dynamic root */ |
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}; |
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static inline struct afs_super_info *AFS_FS_S(struct super_block *sb) |
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{ |
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return sb->s_fs_info; |
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} |
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extern struct file_system_type afs_fs_type; |
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/* |
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* Set of substitutes for @sys. |
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*/ |
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struct afs_sysnames { |
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#define AFS_NR_SYSNAME 16 |
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char *subs[AFS_NR_SYSNAME]; |
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refcount_t usage; |
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unsigned short nr; |
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char blank[1]; |
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}; |
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/* |
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* AFS network namespace record. |
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*/ |
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struct afs_net { |
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struct net *net; /* Backpointer to the owning net namespace */ |
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struct afs_uuid uuid; |
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bool live; /* F if this namespace is being removed */ |
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/* AF_RXRPC I/O stuff */ |
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struct socket *socket; |
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struct afs_call *spare_incoming_call; |
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struct work_struct charge_preallocation_work; |
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struct mutex socket_mutex; |
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atomic_t nr_outstanding_calls; |
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atomic_t nr_superblocks; |
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/* Cell database */ |
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struct rb_root cells; |
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struct afs_cell *ws_cell; |
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struct work_struct cells_manager; |
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struct timer_list cells_timer; |
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atomic_t cells_outstanding; |
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struct rw_semaphore cells_lock; |
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struct mutex cells_alias_lock; |
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struct mutex proc_cells_lock; |
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struct hlist_head proc_cells; |
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/* Known servers. Theoretically each fileserver can only be in one |
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* cell, but in practice, people create aliases and subsets and there's |
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* no easy way to distinguish them. |
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*/ |
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seqlock_t fs_lock; /* For fs_servers, fs_probe_*, fs_proc */ |
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struct rb_root fs_servers; /* afs_server (by server UUID or address) */ |
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struct list_head fs_probe_fast; /* List of afs_server to probe at 30s intervals */ |
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struct list_head fs_probe_slow; /* List of afs_server to probe at 5m intervals */ |
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struct hlist_head fs_proc; /* procfs servers list */ |
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struct hlist_head fs_addresses4; /* afs_server (by lowest IPv4 addr) */ |
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struct hlist_head fs_addresses6; /* afs_server (by lowest IPv6 addr) */ |
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seqlock_t fs_addr_lock; /* For fs_addresses[46] */ |
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struct work_struct fs_manager; |
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struct timer_list fs_timer; |
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struct work_struct fs_prober; |
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struct timer_list fs_probe_timer; |
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atomic_t servers_outstanding; |
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/* File locking renewal management */ |
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struct mutex lock_manager_mutex; |
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/* Misc */ |
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struct super_block *dynroot_sb; /* Dynamic root mount superblock */ |
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struct proc_dir_entry *proc_afs; /* /proc/net/afs directory */ |
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struct afs_sysnames *sysnames; |
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rwlock_t sysnames_lock; |
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/* Statistics counters */ |
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atomic_t n_lookup; /* Number of lookups done */ |
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atomic_t n_reval; /* Number of dentries needing revalidation */ |
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atomic_t n_inval; /* Number of invalidations by the server */ |
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atomic_t n_relpg; /* Number of invalidations by releasepage */ |
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atomic_t n_read_dir; /* Number of directory pages read */ |
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atomic_t n_dir_cr; /* Number of directory entry creation edits */ |
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atomic_t n_dir_rm; /* Number of directory entry removal edits */ |
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atomic_t n_stores; /* Number of store ops */ |
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atomic_long_t n_store_bytes; /* Number of bytes stored */ |
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atomic_long_t n_fetch_bytes; /* Number of bytes fetched */ |
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atomic_t n_fetches; /* Number of data fetch ops */ |
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}; |
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extern const char afs_init_sysname[]; |
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enum afs_cell_state { |
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AFS_CELL_UNSET, |
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AFS_CELL_ACTIVATING, |
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AFS_CELL_ACTIVE, |
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AFS_CELL_DEACTIVATING, |
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AFS_CELL_INACTIVE, |
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AFS_CELL_FAILED, |
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AFS_CELL_REMOVED, |
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}; |
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/* |
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* AFS cell record. |
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* |
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* This is a tricky concept to get right as it is possible to create aliases |
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* simply by pointing AFSDB/SRV records for two names at the same set of VL |
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* servers; it is also possible to do things like setting up two sets of VL |
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* servers, one of which provides a superset of the volumes provided by the |
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* other (for internal/external division, for example). |
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* |
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* Cells only exist in the sense that (a) a cell's name maps to a set of VL |
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* servers and (b) a cell's name is used by the client to select the key to use |
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* for authentication and encryption. The cell name is not typically used in |
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* the protocol. |
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* |
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* Two cells are determined to be aliases if they have an explicit alias (YFS |
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* only), share any VL servers in common or have at least one volume in common. |
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* "In common" means that the address list of the VL servers or the fileservers |
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* share at least one endpoint. |
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*/ |
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struct afs_cell { |
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union { |
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struct rcu_head rcu; |
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struct rb_node net_node; /* Node in net->cells */ |
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}; |
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struct afs_net *net; |
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struct afs_cell *alias_of; /* The cell this is an alias of */ |
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struct afs_volume *root_volume; /* The root.cell volume if there is one */ |
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struct key *anonymous_key; /* anonymous user key for this cell */ |
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struct work_struct manager; /* Manager for init/deinit/dns */ |
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struct hlist_node proc_link; /* /proc cell list link */ |
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#ifdef CONFIG_AFS_FSCACHE |
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struct fscache_cookie *cache; /* caching cookie */ |
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#endif |
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time64_t dns_expiry; /* Time AFSDB/SRV record expires */ |
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time64_t last_inactive; /* Time of last drop of usage count */ |
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atomic_t ref; /* Struct refcount */ |
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atomic_t active; /* Active usage counter */ |
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unsigned long flags; |
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#define AFS_CELL_FL_NO_GC 0 /* The cell was added manually, don't auto-gc */ |
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#define AFS_CELL_FL_DO_LOOKUP 1 /* DNS lookup requested */ |
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#define AFS_CELL_FL_CHECK_ALIAS 2 /* Need to check for aliases */ |
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enum afs_cell_state state; |
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short error; |
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enum dns_record_source dns_source:8; /* Latest source of data from lookup */ |
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enum dns_lookup_status dns_status:8; /* Latest status of data from lookup */ |
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unsigned int dns_lookup_count; /* Counter of DNS lookups */ |
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unsigned int debug_id; |
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/* The volumes belonging to this cell */ |
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struct rb_root volumes; /* Tree of volumes on this server */ |
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struct hlist_head proc_volumes; /* procfs volume list */ |
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seqlock_t volume_lock; /* For volumes */ |
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/* Active fileserver interaction state. */ |
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struct rb_root fs_servers; /* afs_server (by server UUID) */ |
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seqlock_t fs_lock; /* For fs_servers */ |
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/* VL server list. */ |
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rwlock_t vl_servers_lock; /* Lock on vl_servers */ |
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struct afs_vlserver_list __rcu *vl_servers; |
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u8 name_len; /* Length of name */ |
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char *name; /* Cell name, case-flattened and NUL-padded */ |
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}; |
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/* |
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* Volume Location server record. |
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*/ |
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struct afs_vlserver { |
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struct rcu_head rcu; |
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struct afs_addr_list __rcu *addresses; /* List of addresses for this VL server */ |
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unsigned long flags; |
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#define AFS_VLSERVER_FL_PROBED 0 /* The VL server has been probed */ |
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#define AFS_VLSERVER_FL_PROBING 1 /* VL server is being probed */ |
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#define AFS_VLSERVER_FL_IS_YFS 2 /* Server is YFS not AFS */ |
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#define AFS_VLSERVER_FL_RESPONDING 3 /* VL server is responding */ |
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rwlock_t lock; /* Lock on addresses */ |
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atomic_t usage; |
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unsigned int rtt; /* Server's current RTT in uS */ |
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/* Probe state */ |
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wait_queue_head_t probe_wq; |
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atomic_t probe_outstanding; |
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spinlock_t probe_lock; |
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struct { |
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unsigned int rtt; /* RTT in uS */ |
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u32 abort_code; |
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short error; |
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unsigned short flags; |
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#define AFS_VLSERVER_PROBE_RESPONDED 0x01 /* At least once response (may be abort) */ |
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#define AFS_VLSERVER_PROBE_IS_YFS 0x02 /* The peer appears to be YFS */ |
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#define AFS_VLSERVER_PROBE_NOT_YFS 0x04 /* The peer appears not to be YFS */ |
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#define AFS_VLSERVER_PROBE_LOCAL_FAILURE 0x08 /* A local failure prevented a probe */ |
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} probe; |
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u16 port; |
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u16 name_len; /* Length of name */ |
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char name[]; /* Server name, case-flattened */ |
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}; |
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/* |
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* Weighted list of Volume Location servers. |
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*/ |
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struct afs_vlserver_entry { |
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u16 priority; /* Preference (as SRV) */ |
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u16 weight; /* Weight (as SRV) */ |
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enum dns_record_source source:8; |
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enum dns_lookup_status status:8; |
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struct afs_vlserver *server; |
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}; |
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struct afs_vlserver_list { |
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struct rcu_head rcu; |
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atomic_t usage; |
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u8 nr_servers; |
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u8 index; /* Server currently in use */ |
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u8 preferred; /* Preferred server */ |
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enum dns_record_source source:8; |
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enum dns_lookup_status status:8; |
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rwlock_t lock; |
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struct afs_vlserver_entry servers[]; |
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}; |
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|
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/* |
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* Cached VLDB entry. |
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* |
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* This is pointed to by cell->vldb_entries, indexed by name. |
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*/ |
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struct afs_vldb_entry { |
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afs_volid_t vid[3]; /* Volume IDs for R/W, R/O and Bak volumes */ |
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|
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unsigned long flags; |
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#define AFS_VLDB_HAS_RW 0 /* - R/W volume exists */ |
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#define AFS_VLDB_HAS_RO 1 /* - R/O volume exists */ |
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#define AFS_VLDB_HAS_BAK 2 /* - Backup volume exists */ |
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#define AFS_VLDB_QUERY_VALID 3 /* - Record is valid */ |
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#define AFS_VLDB_QUERY_ERROR 4 /* - VL server returned error */ |
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|
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uuid_t fs_server[AFS_NMAXNSERVERS]; |
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u32 addr_version[AFS_NMAXNSERVERS]; /* Registration change counters */ |
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u8 fs_mask[AFS_NMAXNSERVERS]; |
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#define AFS_VOL_VTM_RW 0x01 /* R/W version of the volume is available (on this server) */ |
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#define AFS_VOL_VTM_RO 0x02 /* R/O version of the volume is available (on this server) */ |
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#define AFS_VOL_VTM_BAK 0x04 /* backup version of the volume is available (on this server) */ |
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short error; |
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u8 nr_servers; /* Number of server records */ |
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u8 name_len; |
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u8 name[AFS_MAXVOLNAME + 1]; /* NUL-padded volume name */ |
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}; |
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|
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/* |
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* Record of fileserver with which we're actively communicating. |
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*/ |
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struct afs_server { |
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struct rcu_head rcu; |
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union { |
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uuid_t uuid; /* Server ID */ |
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struct afs_uuid _uuid; |
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}; |
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struct afs_addr_list __rcu *addresses; |
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struct afs_cell *cell; /* Cell to which belongs (pins ref) */ |
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struct rb_node uuid_rb; /* Link in net->fs_servers */ |
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struct afs_server __rcu *uuid_next; /* Next server with same UUID */ |
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struct afs_server *uuid_prev; /* Previous server with same UUID */ |
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struct list_head probe_link; /* Link in net->fs_probe_list */ |
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struct hlist_node addr4_link; /* Link in net->fs_addresses4 */ |
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struct hlist_node addr6_link; /* Link in net->fs_addresses6 */ |
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struct hlist_node proc_link; /* Link in net->fs_proc */ |
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struct afs_server *gc_next; /* Next server in manager's list */ |
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time64_t unuse_time; /* Time at which last unused */ |
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unsigned long flags; |
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#define AFS_SERVER_FL_RESPONDING 0 /* The server is responding */ |
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#define AFS_SERVER_FL_UPDATING 1 |
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#define AFS_SERVER_FL_NEEDS_UPDATE 2 /* Fileserver address list is out of date */ |
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#define AFS_SERVER_FL_NOT_READY 4 /* The record is not ready for use */ |
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#define AFS_SERVER_FL_NOT_FOUND 5 /* VL server says no such server */ |
|
#define AFS_SERVER_FL_VL_FAIL 6 /* Failed to access VL server */ |
|
#define AFS_SERVER_FL_MAY_HAVE_CB 8 /* May have callbacks on this fileserver */ |
|
#define AFS_SERVER_FL_IS_YFS 16 /* Server is YFS not AFS */ |
|
#define AFS_SERVER_FL_NO_IBULK 17 /* Fileserver doesn't support FS.InlineBulkStatus */ |
|
#define AFS_SERVER_FL_NO_RM2 18 /* Fileserver doesn't support YFS.RemoveFile2 */ |
|
atomic_t ref; /* Object refcount */ |
|
atomic_t active; /* Active user count */ |
|
u32 addr_version; /* Address list version */ |
|
unsigned int rtt; /* Server's current RTT in uS */ |
|
unsigned int debug_id; /* Debugging ID for traces */ |
|
|
|
/* file service access */ |
|
rwlock_t fs_lock; /* access lock */ |
|
|
|
/* callback promise management */ |
|
unsigned cb_s_break; /* Break-everything counter. */ |
|
|
|
/* Probe state */ |
|
unsigned long probed_at; /* Time last probe was dispatched (jiffies) */ |
|
wait_queue_head_t probe_wq; |
|
atomic_t probe_outstanding; |
|
spinlock_t probe_lock; |
|
struct { |
|
unsigned int rtt; /* RTT in uS */ |
|
u32 abort_code; |
|
short error; |
|
bool responded:1; |
|
bool is_yfs:1; |
|
bool not_yfs:1; |
|
bool local_failure:1; |
|
} probe; |
|
}; |
|
|
|
/* |
|
* Replaceable volume server list. |
|
*/ |
|
struct afs_server_entry { |
|
struct afs_server *server; |
|
}; |
|
|
|
struct afs_server_list { |
|
afs_volid_t vids[AFS_MAXTYPES]; /* Volume IDs */ |
|
refcount_t usage; |
|
unsigned char nr_servers; |
|
unsigned char preferred; /* Preferred server */ |
|
unsigned short vnovol_mask; /* Servers to be skipped due to VNOVOL */ |
|
unsigned int seq; /* Set to ->servers_seq when installed */ |
|
rwlock_t lock; |
|
struct afs_server_entry servers[]; |
|
}; |
|
|
|
/* |
|
* Live AFS volume management. |
|
*/ |
|
struct afs_volume { |
|
union { |
|
struct rcu_head rcu; |
|
afs_volid_t vid; /* volume ID */ |
|
}; |
|
atomic_t usage; |
|
time64_t update_at; /* Time at which to next update */ |
|
struct afs_cell *cell; /* Cell to which belongs (pins ref) */ |
|
struct rb_node cell_node; /* Link in cell->volumes */ |
|
struct hlist_node proc_link; /* Link in cell->proc_volumes */ |
|
struct super_block __rcu *sb; /* Superblock on which inodes reside */ |
|
unsigned long flags; |
|
#define AFS_VOLUME_NEEDS_UPDATE 0 /* - T if an update needs performing */ |
|
#define AFS_VOLUME_UPDATING 1 /* - T if an update is in progress */ |
|
#define AFS_VOLUME_WAIT 2 /* - T if users must wait for update */ |
|
#define AFS_VOLUME_DELETED 3 /* - T if volume appears deleted */ |
|
#define AFS_VOLUME_OFFLINE 4 /* - T if volume offline notice given */ |
|
#define AFS_VOLUME_BUSY 5 /* - T if volume busy notice given */ |
|
#define AFS_VOLUME_MAYBE_NO_IBULK 6 /* - T if some servers don't have InlineBulkStatus */ |
|
#ifdef CONFIG_AFS_FSCACHE |
|
struct fscache_cookie *cache; /* caching cookie */ |
|
#endif |
|
struct afs_server_list __rcu *servers; /* List of servers on which volume resides */ |
|
rwlock_t servers_lock; /* Lock for ->servers */ |
|
unsigned int servers_seq; /* Incremented each time ->servers changes */ |
|
|
|
unsigned cb_v_break; /* Break-everything counter. */ |
|
rwlock_t cb_v_break_lock; |
|
|
|
afs_voltype_t type; /* type of volume */ |
|
char type_force; /* force volume type (suppress R/O -> R/W) */ |
|
u8 name_len; |
|
u8 name[AFS_MAXVOLNAME + 1]; /* NUL-padded volume name */ |
|
}; |
|
|
|
enum afs_lock_state { |
|
AFS_VNODE_LOCK_NONE, /* The vnode has no lock on the server */ |
|
AFS_VNODE_LOCK_WAITING_FOR_CB, /* We're waiting for the server to break the callback */ |
|
AFS_VNODE_LOCK_SETTING, /* We're asking the server for a lock */ |
|
AFS_VNODE_LOCK_GRANTED, /* We have a lock on the server */ |
|
AFS_VNODE_LOCK_EXTENDING, /* We're extending a lock on the server */ |
|
AFS_VNODE_LOCK_NEED_UNLOCK, /* We need to unlock on the server */ |
|
AFS_VNODE_LOCK_UNLOCKING, /* We're telling the server to unlock */ |
|
AFS_VNODE_LOCK_DELETED, /* The vnode has been deleted whilst we have a lock */ |
|
}; |
|
|
|
/* |
|
* AFS inode private data. |
|
* |
|
* Note that afs_alloc_inode() *must* reset anything that could incorrectly |
|
* leak from one inode to another. |
|
*/ |
|
struct afs_vnode { |
|
struct inode vfs_inode; /* the VFS's inode record */ |
|
|
|
struct afs_volume *volume; /* volume on which vnode resides */ |
|
struct afs_fid fid; /* the file identifier for this inode */ |
|
struct afs_file_status status; /* AFS status info for this file */ |
|
afs_dataversion_t invalid_before; /* Child dentries are invalid before this */ |
|
#ifdef CONFIG_AFS_FSCACHE |
|
struct fscache_cookie *cache; /* caching cookie */ |
|
#endif |
|
struct afs_permits __rcu *permit_cache; /* cache of permits so far obtained */ |
|
struct mutex io_lock; /* Lock for serialising I/O on this mutex */ |
|
struct rw_semaphore validate_lock; /* lock for validating this vnode */ |
|
struct rw_semaphore rmdir_lock; /* Lock for rmdir vs sillyrename */ |
|
struct key *silly_key; /* Silly rename key */ |
|
spinlock_t wb_lock; /* lock for wb_keys */ |
|
spinlock_t lock; /* waitqueue/flags lock */ |
|
unsigned long flags; |
|
#define AFS_VNODE_CB_PROMISED 0 /* Set if vnode has a callback promise */ |
|
#define AFS_VNODE_UNSET 1 /* set if vnode attributes not yet set */ |
|
#define AFS_VNODE_DIR_VALID 2 /* Set if dir contents are valid */ |
|
#define AFS_VNODE_ZAP_DATA 3 /* set if vnode's data should be invalidated */ |
|
#define AFS_VNODE_DELETED 4 /* set if vnode deleted on server */ |
|
#define AFS_VNODE_MOUNTPOINT 5 /* set if vnode is a mountpoint symlink */ |
|
#define AFS_VNODE_AUTOCELL 6 /* set if Vnode is an auto mount point */ |
|
#define AFS_VNODE_PSEUDODIR 7 /* set if Vnode is a pseudo directory */ |
|
#define AFS_VNODE_NEW_CONTENT 8 /* Set if file has new content (create/trunc-0) */ |
|
#define AFS_VNODE_SILLY_DELETED 9 /* Set if file has been silly-deleted */ |
|
#define AFS_VNODE_MODIFYING 10 /* Set if we're performing a modification op */ |
|
|
|
struct list_head wb_keys; /* List of keys available for writeback */ |
|
struct list_head pending_locks; /* locks waiting to be granted */ |
|
struct list_head granted_locks; /* locks granted on this file */ |
|
struct delayed_work lock_work; /* work to be done in locking */ |
|
struct key *lock_key; /* Key to be used in lock ops */ |
|
ktime_t locked_at; /* Time at which lock obtained */ |
|
enum afs_lock_state lock_state : 8; |
|
afs_lock_type_t lock_type : 8; |
|
|
|
/* outstanding callback notification on this file */ |
|
void *cb_server; /* Server with callback/filelock */ |
|
unsigned int cb_s_break; /* Mass break counter on ->server */ |
|
unsigned int cb_v_break; /* Mass break counter on ->volume */ |
|
unsigned int cb_break; /* Break counter on vnode */ |
|
seqlock_t cb_lock; /* Lock for ->cb_server, ->status, ->cb_*break */ |
|
|
|
time64_t cb_expires_at; /* time at which callback expires */ |
|
}; |
|
|
|
static inline struct fscache_cookie *afs_vnode_cache(struct afs_vnode *vnode) |
|
{ |
|
#ifdef CONFIG_AFS_FSCACHE |
|
return vnode->cache; |
|
#else |
|
return NULL; |
|
#endif |
|
} |
|
|
|
/* |
|
* cached security record for one user's attempt to access a vnode |
|
*/ |
|
struct afs_permit { |
|
struct key *key; /* RxRPC ticket holding a security context */ |
|
afs_access_t access; /* CallerAccess value for this key */ |
|
}; |
|
|
|
/* |
|
* Immutable cache of CallerAccess records from attempts to access vnodes. |
|
* These may be shared between multiple vnodes. |
|
*/ |
|
struct afs_permits { |
|
struct rcu_head rcu; |
|
struct hlist_node hash_node; /* Link in hash */ |
|
unsigned long h; /* Hash value for this permit list */ |
|
refcount_t usage; |
|
unsigned short nr_permits; /* Number of records */ |
|
bool invalidated; /* Invalidated due to key change */ |
|
struct afs_permit permits[]; /* List of permits sorted by key pointer */ |
|
}; |
|
|
|
/* |
|
* Error prioritisation and accumulation. |
|
*/ |
|
struct afs_error { |
|
short error; /* Accumulated error */ |
|
bool responded; /* T if server responded */ |
|
}; |
|
|
|
/* |
|
* Cursor for iterating over a server's address list. |
|
*/ |
|
struct afs_addr_cursor { |
|
struct afs_addr_list *alist; /* Current address list (pins ref) */ |
|
unsigned long tried; /* Tried addresses */ |
|
signed char index; /* Current address */ |
|
bool responded; /* T if the current address responded */ |
|
unsigned short nr_iterations; /* Number of address iterations */ |
|
short error; |
|
u32 abort_code; |
|
}; |
|
|
|
/* |
|
* Cursor for iterating over a set of volume location servers. |
|
*/ |
|
struct afs_vl_cursor { |
|
struct afs_addr_cursor ac; |
|
struct afs_cell *cell; /* The cell we're querying */ |
|
struct afs_vlserver_list *server_list; /* Current server list (pins ref) */ |
|
struct afs_vlserver *server; /* Server on which this resides */ |
|
struct key *key; /* Key for the server */ |
|
unsigned long untried; /* Bitmask of untried servers */ |
|
short index; /* Current server */ |
|
short error; |
|
unsigned short flags; |
|
#define AFS_VL_CURSOR_STOP 0x0001 /* Set to cease iteration */ |
|
#define AFS_VL_CURSOR_RETRY 0x0002 /* Set to do a retry */ |
|
#define AFS_VL_CURSOR_RETRIED 0x0004 /* Set if started a retry */ |
|
unsigned short nr_iterations; /* Number of server iterations */ |
|
}; |
|
|
|
/* |
|
* Fileserver operation methods. |
|
*/ |
|
struct afs_operation_ops { |
|
void (*issue_afs_rpc)(struct afs_operation *op); |
|
void (*issue_yfs_rpc)(struct afs_operation *op); |
|
void (*success)(struct afs_operation *op); |
|
void (*aborted)(struct afs_operation *op); |
|
void (*edit_dir)(struct afs_operation *op); |
|
void (*put)(struct afs_operation *op); |
|
}; |
|
|
|
struct afs_vnode_param { |
|
struct afs_vnode *vnode; |
|
struct afs_fid fid; /* Fid to access */ |
|
struct afs_status_cb scb; /* Returned status and callback promise */ |
|
afs_dataversion_t dv_before; /* Data version before the call */ |
|
unsigned int cb_break_before; /* cb_break + cb_s_break before the call */ |
|
u8 dv_delta; /* Expected change in data version */ |
|
bool put_vnode:1; /* T if we have a ref on the vnode */ |
|
bool need_io_lock:1; /* T if we need the I/O lock on this */ |
|
bool update_ctime:1; /* Need to update the ctime */ |
|
bool set_size:1; /* Must update i_size */ |
|
bool op_unlinked:1; /* True if file was unlinked by op */ |
|
bool speculative:1; /* T if speculative status fetch (no vnode lock) */ |
|
bool modification:1; /* Set if the content gets modified */ |
|
}; |
|
|
|
/* |
|
* Fileserver operation wrapper, handling server and address rotation |
|
* asynchronously. May make simultaneous calls to multiple servers. |
|
*/ |
|
struct afs_operation { |
|
struct afs_net *net; /* Network namespace */ |
|
struct key *key; /* Key for the cell */ |
|
const struct afs_call_type *type; /* Type of call done */ |
|
const struct afs_operation_ops *ops; |
|
|
|
/* Parameters/results for the operation */ |
|
struct afs_volume *volume; /* Volume being accessed */ |
|
struct afs_vnode_param file[2]; |
|
struct afs_vnode_param *more_files; |
|
struct afs_volsync volsync; |
|
struct dentry *dentry; /* Dentry to be altered */ |
|
struct dentry *dentry_2; /* Second dentry to be altered */ |
|
struct timespec64 mtime; /* Modification time to record */ |
|
struct timespec64 ctime; /* Change time to set */ |
|
short nr_files; /* Number of entries in file[], more_files */ |
|
short error; |
|
unsigned int debug_id; |
|
|
|
unsigned int cb_v_break; /* Volume break counter before op */ |
|
unsigned int cb_s_break; /* Server break counter before op */ |
|
|
|
union { |
|
struct { |
|
int which; /* Which ->file[] to fetch for */ |
|
} fetch_status; |
|
struct { |
|
int reason; /* enum afs_edit_dir_reason */ |
|
mode_t mode; |
|
const char *symlink; |
|
} create; |
|
struct { |
|
bool need_rehash; |
|
} unlink; |
|
struct { |
|
struct dentry *rehash; |
|
struct dentry *tmp; |
|
bool new_negative; |
|
} rename; |
|
struct { |
|
struct afs_read *req; |
|
} fetch; |
|
struct { |
|
afs_lock_type_t type; |
|
} lock; |
|
struct { |
|
struct address_space *mapping; /* Pages being written from */ |
|
pgoff_t first; /* first page in mapping to deal with */ |
|
pgoff_t last; /* last page in mapping to deal with */ |
|
unsigned first_offset; /* offset into mapping[first] */ |
|
unsigned last_to; /* amount of mapping[last] */ |
|
bool laundering; /* Laundering page, PG_writeback not set */ |
|
} store; |
|
struct { |
|
struct iattr *attr; |
|
loff_t old_i_size; |
|
} setattr; |
|
struct afs_acl *acl; |
|
struct yfs_acl *yacl; |
|
struct { |
|
struct afs_volume_status vs; |
|
struct kstatfs *buf; |
|
} volstatus; |
|
}; |
|
|
|
/* Fileserver iteration state */ |
|
struct afs_addr_cursor ac; |
|
struct afs_server_list *server_list; /* Current server list (pins ref) */ |
|
struct afs_server *server; /* Server we're using (ref pinned by server_list) */ |
|
struct afs_call *call; |
|
unsigned long untried; /* Bitmask of untried servers */ |
|
short index; /* Current server */ |
|
unsigned short nr_iterations; /* Number of server iterations */ |
|
|
|
unsigned int flags; |
|
#define AFS_OPERATION_STOP 0x0001 /* Set to cease iteration */ |
|
#define AFS_OPERATION_VBUSY 0x0002 /* Set if seen VBUSY */ |
|
#define AFS_OPERATION_VMOVED 0x0004 /* Set if seen VMOVED */ |
|
#define AFS_OPERATION_VNOVOL 0x0008 /* Set if seen VNOVOL */ |
|
#define AFS_OPERATION_CUR_ONLY 0x0010 /* Set if current server only (file lock held) */ |
|
#define AFS_OPERATION_NO_VSLEEP 0x0020 /* Set to prevent sleep on VBUSY, VOFFLINE, ... */ |
|
#define AFS_OPERATION_UNINTR 0x0040 /* Set if op is uninterruptible */ |
|
#define AFS_OPERATION_DOWNGRADE 0x0080 /* Set to retry with downgraded opcode */ |
|
#define AFS_OPERATION_LOCK_0 0x0100 /* Set if have io_lock on file[0] */ |
|
#define AFS_OPERATION_LOCK_1 0x0200 /* Set if have io_lock on file[1] */ |
|
#define AFS_OPERATION_TRIED_ALL 0x0400 /* Set if we've tried all the fileservers */ |
|
#define AFS_OPERATION_RETRY_SERVER 0x0800 /* Set if we should retry the current server */ |
|
#define AFS_OPERATION_DIR_CONFLICT 0x1000 /* Set if we detected a 3rd-party dir change */ |
|
}; |
|
|
|
/* |
|
* Cache auxiliary data. |
|
*/ |
|
struct afs_vnode_cache_aux { |
|
u64 data_version; |
|
} __packed; |
|
|
|
/* |
|
* We use page->private to hold the amount of the page that we've written to, |
|
* splitting the field into two parts. However, we need to represent a range |
|
* 0...PAGE_SIZE, so we reduce the resolution if the size of the page |
|
* exceeds what we can encode. |
|
*/ |
|
#ifdef CONFIG_64BIT |
|
#define __AFS_PAGE_PRIV_MASK 0x7fffffffUL |
|
#define __AFS_PAGE_PRIV_SHIFT 32 |
|
#define __AFS_PAGE_PRIV_MMAPPED 0x80000000UL |
|
#else |
|
#define __AFS_PAGE_PRIV_MASK 0x7fffUL |
|
#define __AFS_PAGE_PRIV_SHIFT 16 |
|
#define __AFS_PAGE_PRIV_MMAPPED 0x8000UL |
|
#endif |
|
|
|
static inline unsigned int afs_page_dirty_resolution(void) |
|
{ |
|
int shift = PAGE_SHIFT - (__AFS_PAGE_PRIV_SHIFT - 1); |
|
return (shift > 0) ? shift : 0; |
|
} |
|
|
|
static inline size_t afs_page_dirty_from(unsigned long priv) |
|
{ |
|
unsigned long x = priv & __AFS_PAGE_PRIV_MASK; |
|
|
|
/* The lower bound is inclusive */ |
|
return x << afs_page_dirty_resolution(); |
|
} |
|
|
|
static inline size_t afs_page_dirty_to(unsigned long priv) |
|
{ |
|
unsigned long x = (priv >> __AFS_PAGE_PRIV_SHIFT) & __AFS_PAGE_PRIV_MASK; |
|
|
|
/* The upper bound is immediately beyond the region */ |
|
return (x + 1) << afs_page_dirty_resolution(); |
|
} |
|
|
|
static inline unsigned long afs_page_dirty(size_t from, size_t to) |
|
{ |
|
unsigned int res = afs_page_dirty_resolution(); |
|
from >>= res; |
|
to = (to - 1) >> res; |
|
return (to << __AFS_PAGE_PRIV_SHIFT) | from; |
|
} |
|
|
|
static inline unsigned long afs_page_dirty_mmapped(unsigned long priv) |
|
{ |
|
return priv | __AFS_PAGE_PRIV_MMAPPED; |
|
} |
|
|
|
static inline bool afs_is_page_dirty_mmapped(unsigned long priv) |
|
{ |
|
return priv & __AFS_PAGE_PRIV_MMAPPED; |
|
} |
|
|
|
#include <trace/events/afs.h> |
|
|
|
/*****************************************************************************/ |
|
/* |
|
* addr_list.c |
|
*/ |
|
static inline struct afs_addr_list *afs_get_addrlist(struct afs_addr_list *alist) |
|
{ |
|
if (alist) |
|
refcount_inc(&alist->usage); |
|
return alist; |
|
} |
|
extern struct afs_addr_list *afs_alloc_addrlist(unsigned int, |
|
unsigned short, |
|
unsigned short); |
|
extern void afs_put_addrlist(struct afs_addr_list *); |
|
extern struct afs_vlserver_list *afs_parse_text_addrs(struct afs_net *, |
|
const char *, size_t, char, |
|
unsigned short, unsigned short); |
|
extern struct afs_vlserver_list *afs_dns_query(struct afs_cell *, time64_t *); |
|
extern bool afs_iterate_addresses(struct afs_addr_cursor *); |
|
extern int afs_end_cursor(struct afs_addr_cursor *); |
|
|
|
extern void afs_merge_fs_addr4(struct afs_addr_list *, __be32, u16); |
|
extern void afs_merge_fs_addr6(struct afs_addr_list *, __be32 *, u16); |
|
|
|
/* |
|
* cache.c |
|
*/ |
|
#ifdef CONFIG_AFS_FSCACHE |
|
extern struct fscache_netfs afs_cache_netfs; |
|
extern struct fscache_cookie_def afs_cell_cache_index_def; |
|
extern struct fscache_cookie_def afs_volume_cache_index_def; |
|
extern struct fscache_cookie_def afs_vnode_cache_index_def; |
|
#else |
|
#define afs_cell_cache_index_def (*(struct fscache_cookie_def *) NULL) |
|
#define afs_volume_cache_index_def (*(struct fscache_cookie_def *) NULL) |
|
#define afs_vnode_cache_index_def (*(struct fscache_cookie_def *) NULL) |
|
#endif |
|
|
|
/* |
|
* callback.c |
|
*/ |
|
extern void afs_init_callback_state(struct afs_server *); |
|
extern void __afs_break_callback(struct afs_vnode *, enum afs_cb_break_reason); |
|
extern void afs_break_callback(struct afs_vnode *, enum afs_cb_break_reason); |
|
extern void afs_break_callbacks(struct afs_server *, size_t, struct afs_callback_break *); |
|
|
|
static inline unsigned int afs_calc_vnode_cb_break(struct afs_vnode *vnode) |
|
{ |
|
return vnode->cb_break + vnode->cb_v_break; |
|
} |
|
|
|
static inline bool afs_cb_is_broken(unsigned int cb_break, |
|
const struct afs_vnode *vnode) |
|
{ |
|
return cb_break != (vnode->cb_break + vnode->volume->cb_v_break); |
|
} |
|
|
|
/* |
|
* cell.c |
|
*/ |
|
extern int afs_cell_init(struct afs_net *, const char *); |
|
extern struct afs_cell *afs_find_cell(struct afs_net *, const char *, unsigned, |
|
enum afs_cell_trace); |
|
extern struct afs_cell *afs_lookup_cell(struct afs_net *, const char *, unsigned, |
|
const char *, bool); |
|
extern struct afs_cell *afs_use_cell(struct afs_cell *, enum afs_cell_trace); |
|
extern void afs_unuse_cell(struct afs_net *, struct afs_cell *, enum afs_cell_trace); |
|
extern struct afs_cell *afs_get_cell(struct afs_cell *, enum afs_cell_trace); |
|
extern void afs_see_cell(struct afs_cell *, enum afs_cell_trace); |
|
extern void afs_put_cell(struct afs_cell *, enum afs_cell_trace); |
|
extern void afs_queue_cell(struct afs_cell *, enum afs_cell_trace); |
|
extern void afs_manage_cells(struct work_struct *); |
|
extern void afs_cells_timer(struct timer_list *); |
|
extern void __net_exit afs_cell_purge(struct afs_net *); |
|
|
|
/* |
|
* cmservice.c |
|
*/ |
|
extern bool afs_cm_incoming_call(struct afs_call *); |
|
|
|
/* |
|
* dir.c |
|
*/ |
|
extern const struct file_operations afs_dir_file_operations; |
|
extern const struct inode_operations afs_dir_inode_operations; |
|
extern const struct address_space_operations afs_dir_aops; |
|
extern const struct dentry_operations afs_fs_dentry_operations; |
|
|
|
extern void afs_d_release(struct dentry *); |
|
extern void afs_check_for_remote_deletion(struct afs_operation *); |
|
|
|
/* |
|
* dir_edit.c |
|
*/ |
|
extern void afs_edit_dir_add(struct afs_vnode *, struct qstr *, struct afs_fid *, |
|
enum afs_edit_dir_reason); |
|
extern void afs_edit_dir_remove(struct afs_vnode *, struct qstr *, enum afs_edit_dir_reason); |
|
|
|
/* |
|
* dir_silly.c |
|
*/ |
|
extern int afs_sillyrename(struct afs_vnode *, struct afs_vnode *, |
|
struct dentry *, struct key *); |
|
extern int afs_silly_iput(struct dentry *, struct inode *); |
|
|
|
/* |
|
* dynroot.c |
|
*/ |
|
extern const struct inode_operations afs_dynroot_inode_operations; |
|
extern const struct dentry_operations afs_dynroot_dentry_operations; |
|
|
|
extern struct inode *afs_try_auto_mntpt(struct dentry *, struct inode *); |
|
extern int afs_dynroot_mkdir(struct afs_net *, struct afs_cell *); |
|
extern void afs_dynroot_rmdir(struct afs_net *, struct afs_cell *); |
|
extern int afs_dynroot_populate(struct super_block *); |
|
extern void afs_dynroot_depopulate(struct super_block *); |
|
|
|
/* |
|
* file.c |
|
*/ |
|
extern const struct address_space_operations afs_fs_aops; |
|
extern const struct inode_operations afs_file_inode_operations; |
|
extern const struct file_operations afs_file_operations; |
|
|
|
extern int afs_cache_wb_key(struct afs_vnode *, struct afs_file *); |
|
extern void afs_put_wb_key(struct afs_wb_key *); |
|
extern int afs_open(struct inode *, struct file *); |
|
extern int afs_release(struct inode *, struct file *); |
|
extern int afs_fetch_data(struct afs_vnode *, struct key *, struct afs_read *); |
|
extern int afs_page_filler(void *, struct page *); |
|
extern void afs_put_read(struct afs_read *); |
|
|
|
static inline struct afs_read *afs_get_read(struct afs_read *req) |
|
{ |
|
refcount_inc(&req->usage); |
|
return req; |
|
} |
|
|
|
/* |
|
* flock.c |
|
*/ |
|
extern struct workqueue_struct *afs_lock_manager; |
|
|
|
extern void afs_lock_op_done(struct afs_call *); |
|
extern void afs_lock_work(struct work_struct *); |
|
extern void afs_lock_may_be_available(struct afs_vnode *); |
|
extern int afs_lock(struct file *, int, struct file_lock *); |
|
extern int afs_flock(struct file *, int, struct file_lock *); |
|
|
|
/* |
|
* fsclient.c |
|
*/ |
|
extern void afs_fs_fetch_status(struct afs_operation *); |
|
extern void afs_fs_fetch_data(struct afs_operation *); |
|
extern void afs_fs_create_file(struct afs_operation *); |
|
extern void afs_fs_make_dir(struct afs_operation *); |
|
extern void afs_fs_remove_file(struct afs_operation *); |
|
extern void afs_fs_remove_dir(struct afs_operation *); |
|
extern void afs_fs_link(struct afs_operation *); |
|
extern void afs_fs_symlink(struct afs_operation *); |
|
extern void afs_fs_rename(struct afs_operation *); |
|
extern void afs_fs_store_data(struct afs_operation *); |
|
extern void afs_fs_setattr(struct afs_operation *); |
|
extern void afs_fs_get_volume_status(struct afs_operation *); |
|
extern void afs_fs_set_lock(struct afs_operation *); |
|
extern void afs_fs_extend_lock(struct afs_operation *); |
|
extern void afs_fs_release_lock(struct afs_operation *); |
|
extern int afs_fs_give_up_all_callbacks(struct afs_net *, struct afs_server *, |
|
struct afs_addr_cursor *, struct key *); |
|
extern bool afs_fs_get_capabilities(struct afs_net *, struct afs_server *, |
|
struct afs_addr_cursor *, struct key *); |
|
extern void afs_fs_inline_bulk_status(struct afs_operation *); |
|
|
|
struct afs_acl { |
|
u32 size; |
|
u8 data[]; |
|
}; |
|
|
|
extern void afs_fs_fetch_acl(struct afs_operation *); |
|
extern void afs_fs_store_acl(struct afs_operation *); |
|
|
|
/* |
|
* fs_operation.c |
|
*/ |
|
extern struct afs_operation *afs_alloc_operation(struct key *, struct afs_volume *); |
|
extern int afs_put_operation(struct afs_operation *); |
|
extern bool afs_begin_vnode_operation(struct afs_operation *); |
|
extern void afs_wait_for_operation(struct afs_operation *); |
|
extern int afs_do_sync_operation(struct afs_operation *); |
|
|
|
static inline void afs_op_nomem(struct afs_operation *op) |
|
{ |
|
op->error = -ENOMEM; |
|
} |
|
|
|
static inline void afs_op_set_vnode(struct afs_operation *op, unsigned int n, |
|
struct afs_vnode *vnode) |
|
{ |
|
op->file[n].vnode = vnode; |
|
op->file[n].need_io_lock = true; |
|
} |
|
|
|
static inline void afs_op_set_fid(struct afs_operation *op, unsigned int n, |
|
const struct afs_fid *fid) |
|
{ |
|
op->file[n].fid = *fid; |
|
} |
|
|
|
/* |
|
* fs_probe.c |
|
*/ |
|
extern void afs_fileserver_probe_result(struct afs_call *); |
|
extern void afs_fs_probe_fileserver(struct afs_net *, struct afs_server *, struct key *, bool); |
|
extern int afs_wait_for_fs_probes(struct afs_server_list *, unsigned long); |
|
extern void afs_probe_fileserver(struct afs_net *, struct afs_server *); |
|
extern void afs_fs_probe_dispatcher(struct work_struct *); |
|
extern int afs_wait_for_one_fs_probe(struct afs_server *, bool); |
|
extern void afs_fs_probe_cleanup(struct afs_net *); |
|
|
|
/* |
|
* inode.c |
|
*/ |
|
extern const struct afs_operation_ops afs_fetch_status_operation; |
|
|
|
extern void afs_vnode_commit_status(struct afs_operation *, struct afs_vnode_param *); |
|
extern int afs_fetch_status(struct afs_vnode *, struct key *, bool, afs_access_t *); |
|
extern int afs_ilookup5_test_by_fid(struct inode *, void *); |
|
extern struct inode *afs_iget_pseudo_dir(struct super_block *, bool); |
|
extern struct inode *afs_iget(struct afs_operation *, struct afs_vnode_param *); |
|
extern struct inode *afs_root_iget(struct super_block *, struct key *); |
|
extern bool afs_check_validity(struct afs_vnode *); |
|
extern int afs_validate(struct afs_vnode *, struct key *); |
|
extern int afs_getattr(struct user_namespace *mnt_userns, const struct path *, |
|
struct kstat *, u32, unsigned int); |
|
extern int afs_setattr(struct user_namespace *mnt_userns, struct dentry *, struct iattr *); |
|
extern void afs_evict_inode(struct inode *); |
|
extern int afs_drop_inode(struct inode *); |
|
|
|
/* |
|
* main.c |
|
*/ |
|
extern struct workqueue_struct *afs_wq; |
|
extern int afs_net_id; |
|
|
|
static inline struct afs_net *afs_net(struct net *net) |
|
{ |
|
return net_generic(net, afs_net_id); |
|
} |
|
|
|
static inline struct afs_net *afs_sb2net(struct super_block *sb) |
|
{ |
|
return afs_net(AFS_FS_S(sb)->net_ns); |
|
} |
|
|
|
static inline struct afs_net *afs_d2net(struct dentry *dentry) |
|
{ |
|
return afs_sb2net(dentry->d_sb); |
|
} |
|
|
|
static inline struct afs_net *afs_i2net(struct inode *inode) |
|
{ |
|
return afs_sb2net(inode->i_sb); |
|
} |
|
|
|
static inline struct afs_net *afs_v2net(struct afs_vnode *vnode) |
|
{ |
|
return afs_i2net(&vnode->vfs_inode); |
|
} |
|
|
|
static inline struct afs_net *afs_sock2net(struct sock *sk) |
|
{ |
|
return net_generic(sock_net(sk), afs_net_id); |
|
} |
|
|
|
static inline void __afs_stat(atomic_t *s) |
|
{ |
|
atomic_inc(s); |
|
} |
|
|
|
#define afs_stat_v(vnode, n) __afs_stat(&afs_v2net(vnode)->n) |
|
|
|
/* |
|
* misc.c |
|
*/ |
|
extern int afs_abort_to_error(u32); |
|
extern void afs_prioritise_error(struct afs_error *, int, u32); |
|
|
|
/* |
|
* mntpt.c |
|
*/ |
|
extern const struct inode_operations afs_mntpt_inode_operations; |
|
extern const struct inode_operations afs_autocell_inode_operations; |
|
extern const struct file_operations afs_mntpt_file_operations; |
|
|
|
extern struct vfsmount *afs_d_automount(struct path *); |
|
extern void afs_mntpt_kill_timer(void); |
|
|
|
/* |
|
* proc.c |
|
*/ |
|
#ifdef CONFIG_PROC_FS |
|
extern int __net_init afs_proc_init(struct afs_net *); |
|
extern void __net_exit afs_proc_cleanup(struct afs_net *); |
|
extern int afs_proc_cell_setup(struct afs_cell *); |
|
extern void afs_proc_cell_remove(struct afs_cell *); |
|
extern void afs_put_sysnames(struct afs_sysnames *); |
|
#else |
|
static inline int afs_proc_init(struct afs_net *net) { return 0; } |
|
static inline void afs_proc_cleanup(struct afs_net *net) {} |
|
static inline int afs_proc_cell_setup(struct afs_cell *cell) { return 0; } |
|
static inline void afs_proc_cell_remove(struct afs_cell *cell) {} |
|
static inline void afs_put_sysnames(struct afs_sysnames *sysnames) {} |
|
#endif |
|
|
|
/* |
|
* rotate.c |
|
*/ |
|
extern bool afs_select_fileserver(struct afs_operation *); |
|
extern void afs_dump_edestaddrreq(const struct afs_operation *); |
|
|
|
/* |
|
* rxrpc.c |
|
*/ |
|
extern struct workqueue_struct *afs_async_calls; |
|
|
|
extern int __net_init afs_open_socket(struct afs_net *); |
|
extern void __net_exit afs_close_socket(struct afs_net *); |
|
extern void afs_charge_preallocation(struct work_struct *); |
|
extern void afs_put_call(struct afs_call *); |
|
extern void afs_make_call(struct afs_addr_cursor *, struct afs_call *, gfp_t); |
|
extern long afs_wait_for_call_to_complete(struct afs_call *, struct afs_addr_cursor *); |
|
extern struct afs_call *afs_alloc_flat_call(struct afs_net *, |
|
const struct afs_call_type *, |
|
size_t, size_t); |
|
extern void afs_flat_call_destructor(struct afs_call *); |
|
extern void afs_send_empty_reply(struct afs_call *); |
|
extern void afs_send_simple_reply(struct afs_call *, const void *, size_t); |
|
extern int afs_extract_data(struct afs_call *, bool); |
|
extern int afs_protocol_error(struct afs_call *, enum afs_eproto_cause); |
|
|
|
static inline void afs_make_op_call(struct afs_operation *op, struct afs_call *call, |
|
gfp_t gfp) |
|
{ |
|
op->call = call; |
|
op->type = call->type; |
|
call->op = op; |
|
call->key = op->key; |
|
call->intr = !(op->flags & AFS_OPERATION_UNINTR); |
|
afs_make_call(&op->ac, call, gfp); |
|
} |
|
|
|
static inline void afs_extract_begin(struct afs_call *call, void *buf, size_t size) |
|
{ |
|
call->kvec[0].iov_base = buf; |
|
call->kvec[0].iov_len = size; |
|
iov_iter_kvec(&call->def_iter, READ, call->kvec, 1, size); |
|
} |
|
|
|
static inline void afs_extract_to_tmp(struct afs_call *call) |
|
{ |
|
afs_extract_begin(call, &call->tmp, sizeof(call->tmp)); |
|
} |
|
|
|
static inline void afs_extract_to_tmp64(struct afs_call *call) |
|
{ |
|
afs_extract_begin(call, &call->tmp64, sizeof(call->tmp64)); |
|
} |
|
|
|
static inline void afs_extract_discard(struct afs_call *call, size_t size) |
|
{ |
|
iov_iter_discard(&call->def_iter, READ, size); |
|
} |
|
|
|
static inline void afs_extract_to_buf(struct afs_call *call, size_t size) |
|
{ |
|
afs_extract_begin(call, call->buffer, size); |
|
} |
|
|
|
static inline int afs_transfer_reply(struct afs_call *call) |
|
{ |
|
return afs_extract_data(call, false); |
|
} |
|
|
|
static inline bool afs_check_call_state(struct afs_call *call, |
|
enum afs_call_state state) |
|
{ |
|
return READ_ONCE(call->state) == state; |
|
} |
|
|
|
static inline bool afs_set_call_state(struct afs_call *call, |
|
enum afs_call_state from, |
|
enum afs_call_state to) |
|
{ |
|
bool ok = false; |
|
|
|
spin_lock_bh(&call->state_lock); |
|
if (call->state == from) { |
|
call->state = to; |
|
trace_afs_call_state(call, from, to, 0, 0); |
|
ok = true; |
|
} |
|
spin_unlock_bh(&call->state_lock); |
|
return ok; |
|
} |
|
|
|
static inline void afs_set_call_complete(struct afs_call *call, |
|
int error, u32 remote_abort) |
|
{ |
|
enum afs_call_state state; |
|
bool ok = false; |
|
|
|
spin_lock_bh(&call->state_lock); |
|
state = call->state; |
|
if (state != AFS_CALL_COMPLETE) { |
|
call->abort_code = remote_abort; |
|
call->error = error; |
|
call->state = AFS_CALL_COMPLETE; |
|
trace_afs_call_state(call, state, AFS_CALL_COMPLETE, |
|
error, remote_abort); |
|
ok = true; |
|
} |
|
spin_unlock_bh(&call->state_lock); |
|
if (ok) { |
|
trace_afs_call_done(call); |
|
|
|
/* Asynchronous calls have two refs to release - one from the alloc and |
|
* one queued with the work item - and we can't just deallocate the |
|
* call because the work item may be queued again. |
|
*/ |
|
if (call->drop_ref) |
|
afs_put_call(call); |
|
} |
|
} |
|
|
|
/* |
|
* security.c |
|
*/ |
|
extern void afs_put_permits(struct afs_permits *); |
|
extern void afs_clear_permits(struct afs_vnode *); |
|
extern void afs_cache_permit(struct afs_vnode *, struct key *, unsigned int, |
|
struct afs_status_cb *); |
|
extern void afs_zap_permits(struct rcu_head *); |
|
extern struct key *afs_request_key(struct afs_cell *); |
|
extern struct key *afs_request_key_rcu(struct afs_cell *); |
|
extern int afs_check_permit(struct afs_vnode *, struct key *, afs_access_t *); |
|
extern int afs_permission(struct user_namespace *, struct inode *, int); |
|
extern void __exit afs_clean_up_permit_cache(void); |
|
|
|
/* |
|
* server.c |
|
*/ |
|
extern spinlock_t afs_server_peer_lock; |
|
|
|
extern struct afs_server *afs_find_server(struct afs_net *, |
|
const struct sockaddr_rxrpc *); |
|
extern struct afs_server *afs_find_server_by_uuid(struct afs_net *, const uuid_t *); |
|
extern struct afs_server *afs_lookup_server(struct afs_cell *, struct key *, const uuid_t *, u32); |
|
extern struct afs_server *afs_get_server(struct afs_server *, enum afs_server_trace); |
|
extern struct afs_server *afs_use_server(struct afs_server *, enum afs_server_trace); |
|
extern void afs_unuse_server(struct afs_net *, struct afs_server *, enum afs_server_trace); |
|
extern void afs_unuse_server_notime(struct afs_net *, struct afs_server *, enum afs_server_trace); |
|
extern void afs_put_server(struct afs_net *, struct afs_server *, enum afs_server_trace); |
|
extern void afs_manage_servers(struct work_struct *); |
|
extern void afs_servers_timer(struct timer_list *); |
|
extern void afs_fs_probe_timer(struct timer_list *); |
|
extern void __net_exit afs_purge_servers(struct afs_net *); |
|
extern bool afs_check_server_record(struct afs_operation *, struct afs_server *); |
|
|
|
static inline void afs_inc_servers_outstanding(struct afs_net *net) |
|
{ |
|
atomic_inc(&net->servers_outstanding); |
|
} |
|
|
|
static inline void afs_dec_servers_outstanding(struct afs_net *net) |
|
{ |
|
if (atomic_dec_and_test(&net->servers_outstanding)) |
|
wake_up_var(&net->servers_outstanding); |
|
} |
|
|
|
static inline bool afs_is_probing_server(struct afs_server *server) |
|
{ |
|
return list_empty(&server->probe_link); |
|
} |
|
|
|
/* |
|
* server_list.c |
|
*/ |
|
static inline struct afs_server_list *afs_get_serverlist(struct afs_server_list *slist) |
|
{ |
|
refcount_inc(&slist->usage); |
|
return slist; |
|
} |
|
|
|
extern void afs_put_serverlist(struct afs_net *, struct afs_server_list *); |
|
extern struct afs_server_list *afs_alloc_server_list(struct afs_cell *, struct key *, |
|
struct afs_vldb_entry *, |
|
u8); |
|
extern bool afs_annotate_server_list(struct afs_server_list *, struct afs_server_list *); |
|
|
|
/* |
|
* super.c |
|
*/ |
|
extern int __init afs_fs_init(void); |
|
extern void afs_fs_exit(void); |
|
|
|
/* |
|
* vlclient.c |
|
*/ |
|
extern struct afs_vldb_entry *afs_vl_get_entry_by_name_u(struct afs_vl_cursor *, |
|
const char *, int); |
|
extern struct afs_addr_list *afs_vl_get_addrs_u(struct afs_vl_cursor *, const uuid_t *); |
|
extern struct afs_call *afs_vl_get_capabilities(struct afs_net *, struct afs_addr_cursor *, |
|
struct key *, struct afs_vlserver *, unsigned int); |
|
extern struct afs_addr_list *afs_yfsvl_get_endpoints(struct afs_vl_cursor *, const uuid_t *); |
|
extern char *afs_yfsvl_get_cell_name(struct afs_vl_cursor *); |
|
|
|
/* |
|
* vl_alias.c |
|
*/ |
|
extern int afs_cell_detect_alias(struct afs_cell *, struct key *); |
|
|
|
/* |
|
* vl_probe.c |
|
*/ |
|
extern void afs_vlserver_probe_result(struct afs_call *); |
|
extern int afs_send_vl_probes(struct afs_net *, struct key *, struct afs_vlserver_list *); |
|
extern int afs_wait_for_vl_probes(struct afs_vlserver_list *, unsigned long); |
|
|
|
/* |
|
* vl_rotate.c |
|
*/ |
|
extern bool afs_begin_vlserver_operation(struct afs_vl_cursor *, |
|
struct afs_cell *, struct key *); |
|
extern bool afs_select_vlserver(struct afs_vl_cursor *); |
|
extern bool afs_select_current_vlserver(struct afs_vl_cursor *); |
|
extern int afs_end_vlserver_operation(struct afs_vl_cursor *); |
|
|
|
/* |
|
* vlserver_list.c |
|
*/ |
|
static inline struct afs_vlserver *afs_get_vlserver(struct afs_vlserver *vlserver) |
|
{ |
|
atomic_inc(&vlserver->usage); |
|
return vlserver; |
|
} |
|
|
|
static inline struct afs_vlserver_list *afs_get_vlserverlist(struct afs_vlserver_list *vllist) |
|
{ |
|
if (vllist) |
|
atomic_inc(&vllist->usage); |
|
return vllist; |
|
} |
|
|
|
extern struct afs_vlserver *afs_alloc_vlserver(const char *, size_t, unsigned short); |
|
extern void afs_put_vlserver(struct afs_net *, struct afs_vlserver *); |
|
extern struct afs_vlserver_list *afs_alloc_vlserver_list(unsigned int); |
|
extern void afs_put_vlserverlist(struct afs_net *, struct afs_vlserver_list *); |
|
extern struct afs_vlserver_list *afs_extract_vlserver_list(struct afs_cell *, |
|
const void *, size_t); |
|
|
|
/* |
|
* volume.c |
|
*/ |
|
extern struct afs_volume *afs_create_volume(struct afs_fs_context *); |
|
extern void afs_activate_volume(struct afs_volume *); |
|
extern void afs_deactivate_volume(struct afs_volume *); |
|
extern struct afs_volume *afs_get_volume(struct afs_volume *, enum afs_volume_trace); |
|
extern void afs_put_volume(struct afs_net *, struct afs_volume *, enum afs_volume_trace); |
|
extern int afs_check_volume_status(struct afs_volume *, struct afs_operation *); |
|
|
|
/* |
|
* write.c |
|
*/ |
|
extern int afs_set_page_dirty(struct page *); |
|
extern int afs_write_begin(struct file *file, struct address_space *mapping, |
|
loff_t pos, unsigned len, unsigned flags, |
|
struct page **pagep, void **fsdata); |
|
extern int afs_write_end(struct file *file, struct address_space *mapping, |
|
loff_t pos, unsigned len, unsigned copied, |
|
struct page *page, void *fsdata); |
|
extern int afs_writepage(struct page *, struct writeback_control *); |
|
extern int afs_writepages(struct address_space *, struct writeback_control *); |
|
extern ssize_t afs_file_write(struct kiocb *, struct iov_iter *); |
|
extern int afs_fsync(struct file *, loff_t, loff_t, int); |
|
extern vm_fault_t afs_page_mkwrite(struct vm_fault *vmf); |
|
extern void afs_prune_wb_keys(struct afs_vnode *); |
|
extern int afs_launder_page(struct page *); |
|
|
|
/* |
|
* xattr.c |
|
*/ |
|
extern const struct xattr_handler *afs_xattr_handlers[]; |
|
|
|
/* |
|
* yfsclient.c |
|
*/ |
|
extern void yfs_fs_fetch_data(struct afs_operation *); |
|
extern void yfs_fs_create_file(struct afs_operation *); |
|
extern void yfs_fs_make_dir(struct afs_operation *); |
|
extern void yfs_fs_remove_file2(struct afs_operation *); |
|
extern void yfs_fs_remove_file(struct afs_operation *); |
|
extern void yfs_fs_remove_dir(struct afs_operation *); |
|
extern void yfs_fs_link(struct afs_operation *); |
|
extern void yfs_fs_symlink(struct afs_operation *); |
|
extern void yfs_fs_rename(struct afs_operation *); |
|
extern void yfs_fs_store_data(struct afs_operation *); |
|
extern void yfs_fs_setattr(struct afs_operation *); |
|
extern void yfs_fs_get_volume_status(struct afs_operation *); |
|
extern void yfs_fs_set_lock(struct afs_operation *); |
|
extern void yfs_fs_extend_lock(struct afs_operation *); |
|
extern void yfs_fs_release_lock(struct afs_operation *); |
|
extern void yfs_fs_fetch_status(struct afs_operation *); |
|
extern void yfs_fs_inline_bulk_status(struct afs_operation *); |
|
|
|
struct yfs_acl { |
|
struct afs_acl *acl; /* Dir/file/symlink ACL */ |
|
struct afs_acl *vol_acl; /* Whole volume ACL */ |
|
u32 inherit_flag; /* True if ACL is inherited from parent dir */ |
|
u32 num_cleaned; /* Number of ACEs removed due to subject removal */ |
|
unsigned int flags; |
|
#define YFS_ACL_WANT_ACL 0x01 /* Set if caller wants ->acl */ |
|
#define YFS_ACL_WANT_VOL_ACL 0x02 /* Set if caller wants ->vol_acl */ |
|
}; |
|
|
|
extern void yfs_free_opaque_acl(struct yfs_acl *); |
|
extern void yfs_fs_fetch_opaque_acl(struct afs_operation *); |
|
extern void yfs_fs_store_opaque_acl2(struct afs_operation *); |
|
|
|
/* |
|
* Miscellaneous inline functions. |
|
*/ |
|
static inline struct afs_vnode *AFS_FS_I(struct inode *inode) |
|
{ |
|
return container_of(inode, struct afs_vnode, vfs_inode); |
|
} |
|
|
|
static inline struct inode *AFS_VNODE_TO_I(struct afs_vnode *vnode) |
|
{ |
|
return &vnode->vfs_inode; |
|
} |
|
|
|
/* |
|
* Note that a dentry got changed. We need to set d_fsdata to the data version |
|
* number derived from the result of the operation. It doesn't matter if |
|
* d_fsdata goes backwards as we'll just revalidate. |
|
*/ |
|
static inline void afs_update_dentry_version(struct afs_operation *op, |
|
struct afs_vnode_param *dir_vp, |
|
struct dentry *dentry) |
|
{ |
|
if (!op->error) |
|
dentry->d_fsdata = |
|
(void *)(unsigned long)dir_vp->scb.status.data_version; |
|
} |
|
|
|
/* |
|
* Check for a conflicting operation on a directory that we just unlinked from. |
|
* If someone managed to sneak a link or an unlink in on the file we just |
|
* unlinked, we won't be able to trust nlink on an AFS file (but not YFS). |
|
*/ |
|
static inline void afs_check_dir_conflict(struct afs_operation *op, |
|
struct afs_vnode_param *dvp) |
|
{ |
|
if (dvp->dv_before + dvp->dv_delta != dvp->scb.status.data_version) |
|
op->flags |= AFS_OPERATION_DIR_CONFLICT; |
|
} |
|
|
|
static inline int afs_io_error(struct afs_call *call, enum afs_io_error where) |
|
{ |
|
trace_afs_io_error(call->debug_id, -EIO, where); |
|
return -EIO; |
|
} |
|
|
|
static inline int afs_bad(struct afs_vnode *vnode, enum afs_file_error where) |
|
{ |
|
trace_afs_file_error(vnode, -EIO, where); |
|
return -EIO; |
|
} |
|
|
|
/*****************************************************************************/ |
|
/* |
|
* debug tracing |
|
*/ |
|
extern unsigned afs_debug; |
|
|
|
#define dbgprintk(FMT,...) \ |
|
printk("[%-6.6s] "FMT"\n", current->comm ,##__VA_ARGS__) |
|
|
|
#define kenter(FMT,...) dbgprintk("==> %s("FMT")",__func__ ,##__VA_ARGS__) |
|
#define kleave(FMT,...) dbgprintk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) |
|
#define kdebug(FMT,...) dbgprintk(" "FMT ,##__VA_ARGS__) |
|
|
|
|
|
#if defined(__KDEBUG) |
|
#define _enter(FMT,...) kenter(FMT,##__VA_ARGS__) |
|
#define _leave(FMT,...) kleave(FMT,##__VA_ARGS__) |
|
#define _debug(FMT,...) kdebug(FMT,##__VA_ARGS__) |
|
|
|
#elif defined(CONFIG_AFS_DEBUG) |
|
#define AFS_DEBUG_KENTER 0x01 |
|
#define AFS_DEBUG_KLEAVE 0x02 |
|
#define AFS_DEBUG_KDEBUG 0x04 |
|
|
|
#define _enter(FMT,...) \ |
|
do { \ |
|
if (unlikely(afs_debug & AFS_DEBUG_KENTER)) \ |
|
kenter(FMT,##__VA_ARGS__); \ |
|
} while (0) |
|
|
|
#define _leave(FMT,...) \ |
|
do { \ |
|
if (unlikely(afs_debug & AFS_DEBUG_KLEAVE)) \ |
|
kleave(FMT,##__VA_ARGS__); \ |
|
} while (0) |
|
|
|
#define _debug(FMT,...) \ |
|
do { \ |
|
if (unlikely(afs_debug & AFS_DEBUG_KDEBUG)) \ |
|
kdebug(FMT,##__VA_ARGS__); \ |
|
} while (0) |
|
|
|
#else |
|
#define _enter(FMT,...) no_printk("==> %s("FMT")",__func__ ,##__VA_ARGS__) |
|
#define _leave(FMT,...) no_printk("<== %s()"FMT"",__func__ ,##__VA_ARGS__) |
|
#define _debug(FMT,...) no_printk(" "FMT ,##__VA_ARGS__) |
|
#endif |
|
|
|
/* |
|
* debug assertion checking |
|
*/ |
|
#if 1 // defined(__KDEBUGALL) |
|
|
|
#define ASSERT(X) \ |
|
do { \ |
|
if (unlikely(!(X))) { \ |
|
printk(KERN_ERR "\n"); \ |
|
printk(KERN_ERR "AFS: Assertion failed\n"); \ |
|
BUG(); \ |
|
} \ |
|
} while(0) |
|
|
|
#define ASSERTCMP(X, OP, Y) \ |
|
do { \ |
|
if (unlikely(!((X) OP (Y)))) { \ |
|
printk(KERN_ERR "\n"); \ |
|
printk(KERN_ERR "AFS: Assertion failed\n"); \ |
|
printk(KERN_ERR "%lu " #OP " %lu is false\n", \ |
|
(unsigned long)(X), (unsigned long)(Y)); \ |
|
printk(KERN_ERR "0x%lx " #OP " 0x%lx is false\n", \ |
|
(unsigned long)(X), (unsigned long)(Y)); \ |
|
BUG(); \ |
|
} \ |
|
} while(0) |
|
|
|
#define ASSERTRANGE(L, OP1, N, OP2, H) \ |
|
do { \ |
|
if (unlikely(!((L) OP1 (N)) || !((N) OP2 (H)))) { \ |
|
printk(KERN_ERR "\n"); \ |
|
printk(KERN_ERR "AFS: Assertion failed\n"); \ |
|
printk(KERN_ERR "%lu "#OP1" %lu "#OP2" %lu is false\n", \ |
|
(unsigned long)(L), (unsigned long)(N), \ |
|
(unsigned long)(H)); \ |
|
printk(KERN_ERR "0x%lx "#OP1" 0x%lx "#OP2" 0x%lx is false\n", \ |
|
(unsigned long)(L), (unsigned long)(N), \ |
|
(unsigned long)(H)); \ |
|
BUG(); \ |
|
} \ |
|
} while(0) |
|
|
|
#define ASSERTIF(C, X) \ |
|
do { \ |
|
if (unlikely((C) && !(X))) { \ |
|
printk(KERN_ERR "\n"); \ |
|
printk(KERN_ERR "AFS: Assertion failed\n"); \ |
|
BUG(); \ |
|
} \ |
|
} while(0) |
|
|
|
#define ASSERTIFCMP(C, X, OP, Y) \ |
|
do { \ |
|
if (unlikely((C) && !((X) OP (Y)))) { \ |
|
printk(KERN_ERR "\n"); \ |
|
printk(KERN_ERR "AFS: Assertion failed\n"); \ |
|
printk(KERN_ERR "%lu " #OP " %lu is false\n", \ |
|
(unsigned long)(X), (unsigned long)(Y)); \ |
|
printk(KERN_ERR "0x%lx " #OP " 0x%lx is false\n", \ |
|
(unsigned long)(X), (unsigned long)(Y)); \ |
|
BUG(); \ |
|
} \ |
|
} while(0) |
|
|
|
#else |
|
|
|
#define ASSERT(X) \ |
|
do { \ |
|
} while(0) |
|
|
|
#define ASSERTCMP(X, OP, Y) \ |
|
do { \ |
|
} while(0) |
|
|
|
#define ASSERTRANGE(L, OP1, N, OP2, H) \ |
|
do { \ |
|
} while(0) |
|
|
|
#define ASSERTIF(C, X) \ |
|
do { \ |
|
} while(0) |
|
|
|
#define ASSERTIFCMP(C, X, OP, Y) \ |
|
do { \ |
|
} while(0) |
|
|
|
#endif /* __KDEBUGALL */
|
|
|