[Feature] add GA346 baseline version
Change-Id: Ic62933698569507dcf98240cdf5d9931ae34348f
diff --git a/src/kernel/linux/v4.19/fs/afs/internal.h b/src/kernel/linux/v4.19/fs/afs/internal.h
new file mode 100644
index 0000000..aea1961
--- /dev/null
+++ b/src/kernel/linux/v4.19/fs/afs/internal.h
@@ -0,0 +1,1256 @@
+/* internal AFS stuff
+ *
+ * Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/compiler.h>
+#include <linux/kernel.h>
+#include <linux/ktime.h>
+#include <linux/fs.h>
+#include <linux/pagemap.h>
+#include <linux/rxrpc.h>
+#include <linux/key.h>
+#include <linux/workqueue.h>
+#include <linux/sched.h>
+#include <linux/fscache.h>
+#include <linux/backing-dev.h>
+#include <linux/uuid.h>
+#include <linux/mm_types.h>
+#include <net/net_namespace.h>
+#include <net/netns/generic.h>
+#include <net/sock.h>
+#include <net/af_rxrpc.h>
+
+#include "afs.h"
+#include "afs_vl.h"
+
+#define AFS_CELL_MAX_ADDRS 15
+
+struct pagevec;
+struct afs_call;
+
+struct afs_mount_params {
+ bool rwpath; /* T if the parent should be considered R/W */
+ bool force; /* T to force cell type */
+ bool autocell; /* T if set auto mount operation */
+ bool dyn_root; /* T if dynamic root */
+ afs_voltype_t type; /* type of volume requested */
+ int volnamesz; /* size of volume name */
+ const char *volname; /* name of volume to mount */
+ struct net *net_ns; /* Network namespace in effect */
+ struct afs_net *net; /* the AFS net namespace stuff */
+ struct afs_cell *cell; /* cell in which to find volume */
+ struct afs_volume *volume; /* volume record */
+ struct key *key; /* key to use for secure mounting */
+};
+
+struct afs_iget_data {
+ struct afs_fid fid;
+ struct afs_volume *volume; /* volume on which resides */
+};
+
+enum afs_call_state {
+ AFS_CALL_CL_REQUESTING, /* Client: Request is being sent */
+ AFS_CALL_CL_AWAIT_REPLY, /* Client: Awaiting reply */
+ AFS_CALL_CL_PROC_REPLY, /* Client: rxrpc call complete; processing reply */
+ AFS_CALL_SV_AWAIT_OP_ID, /* Server: Awaiting op ID */
+ AFS_CALL_SV_AWAIT_REQUEST, /* Server: Awaiting request data */
+ AFS_CALL_SV_REPLYING, /* Server: Replying */
+ AFS_CALL_SV_AWAIT_ACK, /* Server: Awaiting final ACK */
+ AFS_CALL_COMPLETE, /* Completed or failed */
+};
+
+/*
+ * List of server addresses.
+ */
+struct afs_addr_list {
+ struct rcu_head rcu; /* Must be first */
+ refcount_t usage;
+ u32 version; /* Version */
+ unsigned short nr_addrs;
+ unsigned short index; /* Address currently in use */
+ unsigned short nr_ipv4; /* Number of IPv4 addresses */
+ unsigned long probed; /* Mask of servers that have been probed */
+ unsigned long yfs; /* Mask of servers that are YFS */
+ struct sockaddr_rxrpc addrs[];
+};
+
+/*
+ * a record of an in-progress RxRPC call
+ */
+struct afs_call {
+ const struct afs_call_type *type; /* type of call */
+ wait_queue_head_t waitq; /* processes awaiting completion */
+ struct work_struct async_work; /* async I/O processor */
+ struct work_struct work; /* actual work processor */
+ struct rxrpc_call *rxcall; /* RxRPC call handle */
+ struct key *key; /* security for this call */
+ struct afs_net *net; /* The network namespace */
+ struct afs_server *cm_server; /* Server affected by incoming CM call */
+ struct afs_cb_interest *cbi; /* Callback interest for server used */
+ void *request; /* request data (first part) */
+ struct address_space *mapping; /* Pages being written from */
+ void *buffer; /* reply receive buffer */
+ void *reply[4]; /* Where to put the reply */
+ pgoff_t first; /* first page in mapping to deal with */
+ pgoff_t last; /* last page in mapping to deal with */
+ size_t offset; /* offset into received data store */
+ atomic_t usage;
+ enum afs_call_state state;
+ spinlock_t state_lock;
+ int error; /* error code */
+ u32 abort_code; /* Remote abort ID or 0 */
+ unsigned request_size; /* size of request data */
+ unsigned reply_max; /* maximum size of reply */
+ unsigned first_offset; /* offset into mapping[first] */
+ unsigned int cb_break; /* cb_break + cb_s_break before the call */
+ union {
+ unsigned last_to; /* amount of mapping[last] */
+ unsigned count2; /* count used in unmarshalling */
+ };
+ unsigned char unmarshall; /* unmarshalling phase */
+ bool incoming; /* T if incoming call */
+ bool send_pages; /* T if data from mapping should be sent */
+ bool need_attention; /* T if RxRPC poked us */
+ bool async; /* T if asynchronous */
+ bool ret_reply0; /* T if should return reply[0] on success */
+ bool upgrade; /* T to request service upgrade */
+ u16 service_id; /* Actual service ID (after upgrade) */
+ unsigned int debug_id; /* Trace ID */
+ u32 operation_ID; /* operation ID for an incoming call */
+ u32 count; /* count for use in unmarshalling */
+ __be32 tmp; /* place to extract temporary data */
+ afs_dataversion_t expected_version; /* Updated version expected from store */
+ afs_dataversion_t expected_version_2; /* 2nd updated version expected from store */
+};
+
+struct afs_call_type {
+ const char *name;
+ unsigned int op; /* Really enum afs_fs_operation */
+
+ /* deliver request or reply data to an call
+ * - returning an error will cause the call to be aborted
+ */
+ int (*deliver)(struct afs_call *call);
+
+ /* clean up a call */
+ void (*destructor)(struct afs_call *call);
+
+ /* Work function */
+ void (*work)(struct work_struct *work);
+};
+
+/*
+ * Key available for writeback on a file.
+ */
+struct afs_wb_key {
+ refcount_t usage;
+ struct key *key;
+ struct list_head vnode_link; /* Link in vnode->wb_keys */
+};
+
+/*
+ * AFS open file information record. Pointed to by file->private_data.
+ */
+struct afs_file {
+ struct key *key; /* The key this file was opened with */
+ struct afs_wb_key *wb; /* Writeback key record for this file */
+};
+
+static inline struct key *afs_file_key(struct file *file)
+{
+ struct afs_file *af = file->private_data;
+
+ return af->key;
+}
+
+/*
+ * Record of an outstanding read operation on a vnode.
+ */
+struct afs_read {
+ loff_t pos; /* Where to start reading */
+ loff_t len; /* How much we're asking for */
+ loff_t actual_len; /* How much we're actually getting */
+ loff_t remain; /* Amount remaining */
+ loff_t file_size; /* File size returned by server */
+ afs_dataversion_t data_version; /* Version number returned by server */
+ refcount_t usage;
+ unsigned int index; /* Which page we're reading into */
+ unsigned int nr_pages;
+ void (*page_done)(struct afs_call *, struct afs_read *);
+ struct page **pages;
+ struct page *array[];
+};
+
+/*
+ * AFS superblock private data
+ * - there's one superblock per volume
+ */
+struct afs_super_info {
+ struct net *net_ns; /* Network namespace */
+ struct afs_cell *cell; /* The cell in which the volume resides */
+ struct afs_volume *volume; /* volume record */
+ bool dyn_root; /* True if dynamic root */
+};
+
+static inline struct afs_super_info *AFS_FS_S(struct super_block *sb)
+{
+ return sb->s_fs_info;
+}
+
+extern struct file_system_type afs_fs_type;
+
+/*
+ * Set of substitutes for @sys.
+ */
+struct afs_sysnames {
+#define AFS_NR_SYSNAME 16
+ char *subs[AFS_NR_SYSNAME];
+ refcount_t usage;
+ unsigned short nr;
+ char blank[1];
+};
+
+/*
+ * AFS network namespace record.
+ */
+struct afs_net {
+ struct net *net; /* Backpointer to the owning net namespace */
+ struct afs_uuid uuid;
+ bool live; /* F if this namespace is being removed */
+
+ /* AF_RXRPC I/O stuff */
+ struct socket *socket;
+ struct afs_call *spare_incoming_call;
+ struct work_struct charge_preallocation_work;
+ struct mutex socket_mutex;
+ atomic_t nr_outstanding_calls;
+ atomic_t nr_superblocks;
+
+ /* Cell database */
+ struct rb_root cells;
+ struct afs_cell __rcu *ws_cell;
+ struct work_struct cells_manager;
+ struct timer_list cells_timer;
+ atomic_t cells_outstanding;
+ seqlock_t cells_lock;
+
+ struct mutex proc_cells_lock;
+ struct hlist_head proc_cells;
+
+ /* Known servers. Theoretically each fileserver can only be in one
+ * cell, but in practice, people create aliases and subsets and there's
+ * no easy way to distinguish them.
+ */
+ seqlock_t fs_lock; /* For fs_servers */
+ struct rb_root fs_servers; /* afs_server (by server UUID or address) */
+ struct list_head fs_updates; /* afs_server (by update_at) */
+ struct hlist_head fs_proc; /* procfs servers list */
+
+ struct hlist_head fs_addresses4; /* afs_server (by lowest IPv4 addr) */
+ struct hlist_head fs_addresses6; /* afs_server (by lowest IPv6 addr) */
+ seqlock_t fs_addr_lock; /* For fs_addresses[46] */
+
+ struct work_struct fs_manager;
+ struct timer_list fs_timer;
+ atomic_t servers_outstanding;
+
+ /* File locking renewal management */
+ struct mutex lock_manager_mutex;
+
+ /* Misc */
+ struct super_block *dynroot_sb; /* Dynamic root mount superblock */
+ struct proc_dir_entry *proc_afs; /* /proc/net/afs directory */
+ struct afs_sysnames *sysnames;
+ rwlock_t sysnames_lock;
+
+ /* Statistics counters */
+ atomic_t n_lookup; /* Number of lookups done */
+ atomic_t n_reval; /* Number of dentries needing revalidation */
+ atomic_t n_inval; /* Number of invalidations by the server */
+ atomic_t n_relpg; /* Number of invalidations by releasepage */
+ atomic_t n_read_dir; /* Number of directory pages read */
+ atomic_t n_dir_cr; /* Number of directory entry creation edits */
+ atomic_t n_dir_rm; /* Number of directory entry removal edits */
+ atomic_t n_stores; /* Number of store ops */
+ atomic_long_t n_store_bytes; /* Number of bytes stored */
+ atomic_long_t n_fetch_bytes; /* Number of bytes fetched */
+ atomic_t n_fetches; /* Number of data fetch ops */
+};
+
+extern const char afs_init_sysname[];
+
+enum afs_cell_state {
+ AFS_CELL_UNSET,
+ AFS_CELL_ACTIVATING,
+ AFS_CELL_ACTIVE,
+ AFS_CELL_DEACTIVATING,
+ AFS_CELL_INACTIVE,
+ AFS_CELL_FAILED,
+};
+
+/*
+ * AFS cell record.
+ *
+ * This is a tricky concept to get right as it is possible to create aliases
+ * simply by pointing AFSDB/SRV records for two names at the same set of VL
+ * servers; it is also possible to do things like setting up two sets of VL
+ * servers, one of which provides a superset of the volumes provided by the
+ * other (for internal/external division, for example).
+ *
+ * Cells only exist in the sense that (a) a cell's name maps to a set of VL
+ * servers and (b) a cell's name is used by the client to select the key to use
+ * for authentication and encryption. The cell name is not typically used in
+ * the protocol.
+ *
+ * There is no easy way to determine if two cells are aliases or one is a
+ * subset of another.
+ */
+struct afs_cell {
+ union {
+ struct rcu_head rcu;
+ struct rb_node net_node; /* Node in net->cells */
+ };
+ struct afs_net *net;
+ struct key *anonymous_key; /* anonymous user key for this cell */
+ struct work_struct manager; /* Manager for init/deinit/dns */
+ struct hlist_node proc_link; /* /proc cell list link */
+#ifdef CONFIG_AFS_FSCACHE
+ struct fscache_cookie *cache; /* caching cookie */
+#endif
+ time64_t dns_expiry; /* Time AFSDB/SRV record expires */
+ time64_t last_inactive; /* Time of last drop of usage count */
+ atomic_t usage;
+ unsigned long flags;
+#define AFS_CELL_FL_NOT_READY 0 /* The cell record is not ready for use */
+#define AFS_CELL_FL_NO_GC 1 /* The cell was added manually, don't auto-gc */
+#define AFS_CELL_FL_NOT_FOUND 2 /* Permanent DNS error */
+#define AFS_CELL_FL_DNS_FAIL 3 /* Failed to access DNS */
+#define AFS_CELL_FL_NO_LOOKUP_YET 4 /* Not completed first DNS lookup yet */
+ enum afs_cell_state state;
+ short error;
+
+ /* Active fileserver interaction state. */
+ struct list_head proc_volumes; /* procfs volume list */
+ rwlock_t proc_lock;
+
+ /* VL server list. */
+ rwlock_t vl_addrs_lock; /* Lock on vl_addrs */
+ struct afs_addr_list __rcu *vl_addrs; /* List of VL servers */
+ u8 name_len; /* Length of name */
+ char name[64 + 1]; /* Cell name, case-flattened and NUL-padded */
+};
+
+/*
+ * Cached VLDB entry.
+ *
+ * This is pointed to by cell->vldb_entries, indexed by name.
+ */
+struct afs_vldb_entry {
+ afs_volid_t vid[3]; /* Volume IDs for R/W, R/O and Bak volumes */
+
+ unsigned long flags;
+#define AFS_VLDB_HAS_RW 0 /* - R/W volume exists */
+#define AFS_VLDB_HAS_RO 1 /* - R/O volume exists */
+#define AFS_VLDB_HAS_BAK 2 /* - Backup volume exists */
+#define AFS_VLDB_QUERY_VALID 3 /* - Record is valid */
+#define AFS_VLDB_QUERY_ERROR 4 /* - VL server returned error */
+
+ uuid_t fs_server[AFS_NMAXNSERVERS];
+ u8 fs_mask[AFS_NMAXNSERVERS];
+#define AFS_VOL_VTM_RW 0x01 /* R/W version of the volume is available (on this server) */
+#define AFS_VOL_VTM_RO 0x02 /* R/O version of the volume is available (on this server) */
+#define AFS_VOL_VTM_BAK 0x04 /* backup version of the volume is available (on this server) */
+ short error;
+ u8 nr_servers; /* Number of server records */
+ u8 name_len;
+ u8 name[AFS_MAXVOLNAME + 1]; /* NUL-padded volume name */
+};
+
+/*
+ * Record of fileserver with which we're actively communicating.
+ */
+struct afs_server {
+ struct rcu_head rcu;
+ union {
+ uuid_t uuid; /* Server ID */
+ struct afs_uuid _uuid;
+ };
+
+ struct afs_addr_list __rcu *addresses;
+ struct rb_node uuid_rb; /* Link in net->servers */
+ struct hlist_node addr4_link; /* Link in net->fs_addresses4 */
+ struct hlist_node addr6_link; /* Link in net->fs_addresses6 */
+ struct hlist_node proc_link; /* Link in net->fs_proc */
+ struct afs_server *gc_next; /* Next server in manager's list */
+ time64_t put_time; /* Time at which last put */
+ time64_t update_at; /* Time at which to next update the record */
+ unsigned long flags;
+#define AFS_SERVER_FL_NEW 0 /* New server, don't inc cb_s_break */
+#define AFS_SERVER_FL_NOT_READY 1 /* The record is not ready for use */
+#define AFS_SERVER_FL_NOT_FOUND 2 /* VL server says no such server */
+#define AFS_SERVER_FL_VL_FAIL 3 /* Failed to access VL server */
+#define AFS_SERVER_FL_UPDATING 4
+#define AFS_SERVER_FL_PROBED 5 /* The fileserver has been probed */
+#define AFS_SERVER_FL_PROBING 6 /* Fileserver is being probed */
+#define AFS_SERVER_FL_NO_IBULK 7 /* Fileserver doesn't support FS.InlineBulkStatus */
+#define AFS_SERVER_FL_MAY_HAVE_CB 8 /* May have callbacks on this fileserver */
+ atomic_t usage;
+ u32 addr_version; /* Address list version */
+
+ /* file service access */
+ rwlock_t fs_lock; /* access lock */
+
+ /* callback promise management */
+ struct hlist_head cb_volumes; /* List of volume interests on this server */
+ unsigned cb_s_break; /* Break-everything counter. */
+ rwlock_t cb_break_lock; /* Volume finding lock */
+};
+
+/*
+ * Volume collation in the server's callback interest list.
+ */
+struct afs_vol_interest {
+ struct hlist_node srv_link; /* Link in server->cb_volumes */
+ struct hlist_head cb_interests; /* List of callback interests on the server */
+ afs_volid_t vid; /* Volume ID to match */
+ unsigned int usage;
+};
+
+/*
+ * Interest by a superblock on a server.
+ */
+struct afs_cb_interest {
+ struct hlist_node cb_vlink; /* Link in vol_interest->cb_interests */
+ struct afs_vol_interest *vol_interest;
+ struct afs_server *server; /* Server on which this interest resides */
+ struct super_block *sb; /* Superblock on which inodes reside */
+ afs_volid_t vid; /* Volume ID to match */
+ refcount_t usage;
+};
+
+/*
+ * Replaceable server list.
+ */
+struct afs_server_entry {
+ struct afs_server *server;
+ struct afs_cb_interest *cb_interest;
+};
+
+struct afs_server_list {
+ refcount_t usage;
+ unsigned short nr_servers;
+ unsigned short index; /* Server currently in use */
+ 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 {
+ 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 list_head proc_link; /* Link in cell->vl_proc */
+ 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 */
+#ifdef CONFIG_AFS_FSCACHE
+ struct fscache_cookie *cache; /* caching cookie */
+#endif
+ struct afs_server_list *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 */
+ short error;
+ 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 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 */
+ 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) */
+
+ 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 */
+ enum afs_lock_state lock_state : 8;
+ afs_lock_type_t lock_type : 8;
+
+ /* outstanding callback notification on this file */
+ struct afs_cb_interest *cb_interest; /* Server on which this resides */
+ 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_interest, ->status, ->cb_*break */
+
+ time64_t cb_expires_at; /* time at which callback expires */
+ unsigned cb_version; /* callback version */
+ afs_callback_type_t cb_type; /* type of callback */
+};
+
+/*
+ * 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 */
+};
+
+/*
+ * record of one of a system's set of network interfaces
+ */
+struct afs_interface {
+ struct in_addr address; /* IPv4 address bound to interface */
+ struct in_addr netmask; /* netmask applied to address */
+ unsigned mtu; /* MTU of interface */
+};
+
+/*
+ * Cursor for iterating over a server's address list.
+ */
+struct afs_addr_cursor {
+ struct afs_addr_list *alist; /* Current address list (pins ref) */
+ struct sockaddr_rxrpc *addr;
+ u32 abort_code;
+ unsigned short start; /* Starting point in alist->addrs[] */
+ unsigned short index; /* Wrapping offset from start to current addr */
+ short error;
+ bool begun; /* T if we've begun iteration */
+ bool responded; /* T if the current address responded */
+};
+
+/*
+ * Cursor for iterating over a set of fileservers.
+ */
+struct afs_fs_cursor {
+ struct afs_addr_cursor ac;
+ struct afs_vnode *vnode;
+ struct afs_server_list *server_list; /* Current server list (pins ref) */
+ struct afs_cb_interest *cbi; /* Server on which this resides (pins ref) */
+ struct key *key; /* Key for the server */
+ unsigned int cb_break; /* cb_break + cb_s_break before the call */
+ unsigned int cb_break_2; /* cb_break + cb_s_break (2nd vnode) */
+ unsigned char start; /* Initial index in server list */
+ unsigned char index; /* Number of servers tried beyond start */
+ unsigned short flags;
+#define AFS_FS_CURSOR_STOP 0x0001 /* Set to cease iteration */
+#define AFS_FS_CURSOR_VBUSY 0x0002 /* Set if seen VBUSY */
+#define AFS_FS_CURSOR_VMOVED 0x0004 /* Set if seen VMOVED */
+#define AFS_FS_CURSOR_VNOVOL 0x0008 /* Set if seen VNOVOL */
+#define AFS_FS_CURSOR_CUR_ONLY 0x0010 /* Set if current server only (file lock held) */
+#define AFS_FS_CURSOR_NO_VSLEEP 0x0020 /* Set to prevent sleep on VBUSY, VOFFLINE, ... */
+};
+
+/*
+ * Cache auxiliary data.
+ */
+struct afs_vnode_cache_aux {
+ u64 data_version;
+} __packed;
+
+#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_addr_list *afs_parse_text_addrs(const char *, size_t, char,
+ unsigned short, unsigned short);
+extern struct afs_addr_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 int afs_set_vl_cursor(struct afs_addr_cursor *, struct afs_cell *);
+
+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 *);
+extern void afs_break_callbacks(struct afs_server *, size_t, struct afs_callback_break*);
+
+extern int afs_register_server_cb_interest(struct afs_vnode *,
+ struct afs_server_list *, unsigned int);
+extern void afs_put_cb_interest(struct afs_net *, struct afs_cb_interest *);
+extern void afs_clear_callback_interests(struct afs_net *, struct afs_server_list *);
+
+static inline struct afs_cb_interest *afs_get_cb_interest(struct afs_cb_interest *cbi)
+{
+ if (cbi)
+ refcount_inc(&cbi->usage);
+ return cbi;
+}
+
+static inline unsigned int afs_calc_vnode_cb_break(struct afs_vnode *vnode)
+{
+ return vnode->cb_break + vnode->cb_s_break + vnode->cb_v_break;
+}
+
+static inline unsigned int afs_cb_break_sum(struct afs_vnode *vnode,
+ struct afs_cb_interest *cbi)
+{
+ return vnode->cb_break + cbi->server->cb_s_break + vnode->volume->cb_v_break;
+}
+
+/*
+ * cell.c
+ */
+extern int afs_cell_init(struct afs_net *, const char *);
+extern struct afs_cell *afs_lookup_cell_rcu(struct afs_net *, const char *, unsigned);
+extern struct afs_cell *afs_lookup_cell(struct afs_net *, const char *, unsigned,
+ const char *, bool);
+extern struct afs_cell *afs_get_cell(struct afs_cell *);
+extern void afs_put_cell(struct afs_net *, struct afs_cell *);
+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 *);
+
+/*
+ * 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);
+
+/*
+ * dynroot.c
+ */
+extern const struct file_operations afs_dynroot_file_operations;
+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 *);
+
+/*
+ * flock.c
+ */
+extern struct workqueue_struct *afs_lock_manager;
+
+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
+ */
+#define AFS_VNODE_NOT_YET_SET 0x01
+#define AFS_VNODE_META_CHANGED 0x02
+#define AFS_VNODE_DATA_CHANGED 0x04
+extern void afs_update_inode_from_status(struct afs_vnode *, struct afs_file_status *,
+ const afs_dataversion_t *, u8);
+
+extern int afs_fs_fetch_file_status(struct afs_fs_cursor *, struct afs_volsync *, bool);
+extern int afs_fs_give_up_callbacks(struct afs_net *, struct afs_server *);
+extern int afs_fs_fetch_data(struct afs_fs_cursor *, struct afs_read *);
+extern int afs_fs_create(struct afs_fs_cursor *, const char *, umode_t, u64,
+ struct afs_fid *, struct afs_file_status *, struct afs_callback *);
+extern int afs_fs_remove(struct afs_fs_cursor *, const char *, bool, u64);
+extern int afs_fs_link(struct afs_fs_cursor *, struct afs_vnode *, const char *, u64);
+extern int afs_fs_symlink(struct afs_fs_cursor *, const char *, const char *, u64,
+ struct afs_fid *, struct afs_file_status *);
+extern int afs_fs_rename(struct afs_fs_cursor *, const char *,
+ struct afs_vnode *, const char *, u64, u64);
+extern int afs_fs_store_data(struct afs_fs_cursor *, struct address_space *,
+ pgoff_t, pgoff_t, unsigned, unsigned);
+extern int afs_fs_setattr(struct afs_fs_cursor *, struct iattr *);
+extern int afs_fs_get_volume_status(struct afs_fs_cursor *, struct afs_volume_status *);
+extern int afs_fs_set_lock(struct afs_fs_cursor *, afs_lock_type_t);
+extern int afs_fs_extend_lock(struct afs_fs_cursor *);
+extern int afs_fs_release_lock(struct afs_fs_cursor *);
+extern int afs_fs_give_up_all_callbacks(struct afs_net *, struct afs_server *,
+ struct afs_addr_cursor *, struct key *);
+extern int afs_fs_get_capabilities(struct afs_net *, struct afs_server *,
+ struct afs_addr_cursor *, struct key *);
+extern int afs_fs_inline_bulk_status(struct afs_fs_cursor *, struct afs_net *,
+ struct afs_fid *, struct afs_file_status *,
+ struct afs_callback *, unsigned int,
+ struct afs_volsync *);
+extern int afs_fs_fetch_status(struct afs_fs_cursor *, struct afs_net *,
+ struct afs_fid *, struct afs_file_status *,
+ struct afs_callback *, struct afs_volsync *);
+
+/*
+ * inode.c
+ */
+extern int afs_fetch_status(struct afs_vnode *, struct key *, bool);
+extern int afs_iget5_test(struct inode *, void *);
+extern struct inode *afs_iget_pseudo_dir(struct super_block *, bool);
+extern struct inode *afs_iget(struct super_block *, struct key *,
+ struct afs_fid *, struct afs_file_status *,
+ struct afs_callback *,
+ struct afs_cb_interest *);
+extern void afs_zap_data(struct afs_vnode *);
+extern int afs_validate(struct afs_vnode *, struct key *);
+extern int afs_getattr(const struct path *, struct kstat *, u32, unsigned int);
+extern int afs_setattr(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);
+
+/*
+ * 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);
+
+/*
+ * netdevices.c
+ */
+extern int afs_get_ipv4_interfaces(struct afs_net *, struct afs_interface *,
+ size_t, bool);
+
+/*
+ * 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_begin_vnode_operation(struct afs_fs_cursor *, struct afs_vnode *,
+ struct key *);
+extern bool afs_select_fileserver(struct afs_fs_cursor *);
+extern bool afs_select_current_fileserver(struct afs_fs_cursor *);
+extern int afs_end_vnode_operation(struct afs_fs_cursor *);
+
+/*
+ * 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 int afs_queue_call_work(struct afs_call *);
+extern long afs_make_call(struct afs_addr_cursor *, struct afs_call *, gfp_t, bool);
+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 *, void *, size_t, bool);
+extern int afs_protocol_error(struct afs_call *, int);
+
+static inline int afs_transfer_reply(struct afs_call *call)
+{
+ return afs_extract_data(call, call->buffer, call->reply_max, 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);
+}
+
+/*
+ * 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);
+extern void afs_zap_permits(struct rcu_head *);
+extern struct key *afs_request_key(struct afs_cell *);
+extern int afs_check_permit(struct afs_vnode *, struct key *, afs_access_t *);
+extern int afs_permission(struct inode *, int);
+extern void __exit afs_clean_up_permit_cache(void);
+
+/*
+ * server.c
+ */
+extern spinlock_t afs_server_peer_lock;
+
+static inline struct afs_server *afs_get_server(struct afs_server *server)
+{
+ atomic_inc(&server->usage);
+ return server;
+}
+
+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 *);
+extern void afs_put_server(struct afs_net *, struct afs_server *);
+extern void afs_manage_servers(struct work_struct *);
+extern void afs_servers_timer(struct timer_list *);
+extern void __net_exit afs_purge_servers(struct afs_net *);
+extern bool afs_probe_fileserver(struct afs_fs_cursor *);
+extern bool afs_check_server_record(struct afs_fs_cursor *, struct afs_server *);
+
+/*
+ * 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_net *,
+ struct afs_addr_cursor *,
+ struct key *, const char *, int);
+extern struct afs_addr_list *afs_vl_get_addrs_u(struct afs_net *, struct afs_addr_cursor *,
+ struct key *, const uuid_t *);
+extern int afs_vl_get_capabilities(struct afs_net *, struct afs_addr_cursor *, struct key *);
+extern struct afs_addr_list *afs_yfsvl_get_endpoints(struct afs_net *, struct afs_addr_cursor *,
+ struct key *, const uuid_t *);
+
+/*
+ * volume.c
+ */
+static inline struct afs_volume *__afs_get_volume(struct afs_volume *volume)
+{
+ if (volume)
+ atomic_inc(&volume->usage);
+ return volume;
+}
+
+extern struct afs_volume *afs_create_volume(struct afs_mount_params *);
+extern void afs_activate_volume(struct afs_volume *);
+extern void afs_deactivate_volume(struct afs_volume *);
+extern void afs_put_volume(struct afs_cell *, struct afs_volume *);
+extern int afs_check_volume_status(struct afs_volume *, struct key *);
+
+/*
+ * 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 void afs_pages_written_back(struct afs_vnode *, struct afs_call *);
+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[];
+extern ssize_t afs_listxattr(struct dentry *, char *, size_t);
+
+
+/*
+ * 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;
+}
+
+static inline void afs_vnode_commit_status(struct afs_fs_cursor *fc,
+ struct afs_vnode *vnode,
+ unsigned int cb_break)
+{
+ if (fc->ac.error == 0)
+ afs_cache_permit(vnode, fc->key, cb_break);
+}
+
+static inline void afs_check_for_remote_deletion(struct afs_fs_cursor *fc,
+ struct afs_vnode *vnode)
+{
+ if (fc->ac.error == -ENOENT) {
+ set_bit(AFS_VNODE_DELETED, &vnode->flags);
+ afs_break_callback(vnode);
+ }
+}
+
+
+/*****************************************************************************/
+/*
+ * 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 */