Something went wrong. Try again.
(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
Something went wrong. Try again.
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343/* SPDX-License-Identifier: GPL-2.0 */#ifndef _NFS_FS_SB#define _NFS_FS_SB
#include <linux/list.h>#include <linux/backing-dev.h>#include <linux/idr.h>#include <linux/wait.h>#include <linux/nfs_xdr.h>#include <linux/sunrpc/xprt.h>#include <linux/nfslocalio.h>
#include <linux/atomic.h>#include <linux/refcount.h>
struct nfs4_session;struct nfs_iostats;struct nlm_host;struct nfs4_sequence_args;struct nfs4_sequence_res;struct nfs_server;struct nfs4_minor_version_ops;struct nfs41_server_scope;struct nfs41_impl_id;
/* * The nfs_client identifies our client state to the server. */struct nfs_client { refcount_t cl_count; atomic_t cl_mds_count; int cl_cons_state; /* current construction state (-ve: init error) */#define NFS_CS_READY 0 /* ready to be used */#define NFS_CS_INITING 1 /* busy initialising */#define NFS_CS_SESSION_INITING 2 /* busy initialising session */ unsigned long cl_res_state; /* NFS resources state */#define NFS_CS_CALLBACK 1 /* - callback started */#define NFS_CS_IDMAP 2 /* - idmap started */#define NFS_CS_RENEWD 3 /* - renewd started */#define NFS_CS_STOP_RENEW 4 /* no more state to renew */#define NFS_CS_CHECK_LEASE_TIME 5 /* need to check lease time */ unsigned long cl_flags; /* behavior switches */#define NFS_CS_NORESVPORT 0 /* - use ephemeral src port */#define NFS_CS_DISCRTRY 1 /* - disconnect on RPC retry */#define NFS_CS_MIGRATION 2 /* - transparent state migr */#define NFS_CS_INFINITE_SLOTS 3 /* - don't limit TCP slots */#define NFS_CS_NO_RETRANS_TIMEOUT 4 /* - Disable retransmit timeouts */#define NFS_CS_TSM_POSSIBLE 5 /* - Maybe state migration */#define NFS_CS_NOPING 6 /* - don't ping on connect */#define NFS_CS_DS 7 /* - Server is a DS */#define NFS_CS_REUSEPORT 8 /* - reuse src port on reconnect */#define NFS_CS_PNFS 9 /* - Server used for pnfs */#define NFS_CS_NETUNREACH_FATAL 10 /* - ENETUNREACH errors are fatal */ struct sockaddr_storage cl_addr; /* server identifier */ size_t cl_addrlen; char * cl_hostname; /* hostname of server */ char * cl_acceptor; /* GSSAPI acceptor name */ struct list_head cl_share_link; /* link in global client list */ struct list_head cl_superblocks; /* List of nfs_server structs */
struct rpc_clnt * cl_rpcclient; const struct nfs_rpc_ops *rpc_ops; /* NFS protocol vector */ int cl_proto; /* Network transport protocol */ struct nfs_subversion * cl_nfs_mod; /* pointer to nfs version module */
u32 cl_minorversion;/* NFSv4 minorversion */ unsigned int cl_nconnect; /* Number of connections */ unsigned int cl_max_connect; /* max number of xprts allowed */ const char * cl_principal; /* used for machine cred */ struct xprtsec_parms cl_xprtsec; /* xprt security policy */
#if IS_ENABLED(CONFIG_NFS_V4) struct list_head cl_ds_clients; /* auth flavor data servers */ u64 cl_clientid; /* constant */ nfs4_verifier cl_confirm; /* Clientid verifier */ unsigned long cl_state; /* bumped on each CB_NOTIFY_DEVICEID CHANGE for this client */ atomic_t cl_deviceid_change_epoch;
spinlock_t cl_lock;
unsigned long cl_lease_time; unsigned long cl_last_renewal; struct delayed_work cl_renewd;
struct rpc_wait_queue cl_rpcwaitq;
/* idmapper */ struct idmap * cl_idmap;
/* Client owner identifier */ const char * cl_owner_id;
u32 cl_cb_ident; /* v4.0 callback identifier */ const struct nfs4_minor_version_ops *cl_mvops; unsigned long cl_mig_gen;
/* NFSv4.0 transport blocking */ struct nfs4_slot_table *cl_slot_tbl;
/* The sequence id to use for the next CREATE_SESSION */ u32 cl_seqid; /* The flags used for obtaining the clientid during EXCHANGE_ID */ u32 cl_exchange_flags; struct nfs4_session *cl_session; /* shared session */ /* CB_NOTIFY_DEVICEID DELETE suspects, protected by cl_lock */ struct list_head cl_deviceid_deletes; bool cl_preserve_clid; struct nfs41_server_owner *cl_serverowner; struct nfs41_server_scope *cl_serverscope; struct nfs41_impl_id *cl_implid; /* nfs 4.1+ state protection modes: */ unsigned long cl_sp4_flags;#define NFS_SP4_MACH_CRED_MINIMAL 1 /* Minimal sp4_mach_cred - state ops * must use machine cred */#define NFS_SP4_MACH_CRED_CLEANUP 2 /* CLOSE and LOCKU */#define NFS_SP4_MACH_CRED_SECINFO 3 /* SECINFO and SECINFO_NO_NAME */#define NFS_SP4_MACH_CRED_STATEID 4 /* TEST_STATEID and FREE_STATEID */#define NFS_SP4_MACH_CRED_WRITE 5 /* WRITE */#define NFS_SP4_MACH_CRED_COMMIT 6 /* COMMIT */#define NFS_SP4_MACH_CRED_PNFS_CLEANUP 7 /* LAYOUTRETURN */ wait_queue_head_t cl_lock_waitq;#endif /* CONFIG_NFS_V4 */
/* Our own IP address, as a null-terminated string. * This is used to generate the mv0 callback address. */ char cl_ipaddr[48]; struct net *cl_net; netns_tracker cl_ns_tracker; struct list_head pending_cb_stateids; struct rcu_head rcu;
#if IS_ENABLED(CONFIG_NFS_LOCALIO) struct timespec64 cl_nfssvc_boot; seqlock_t cl_boot_lock; nfs_uuid_t cl_uuid; struct work_struct cl_local_probe_work;#endif /* CONFIG_NFS_LOCALIO */};
/* * NFS client parameters stored in the superblock. */struct nfs_server { struct nfs_client * nfs_client; /* shared client and NFS4 state */ struct list_head client_link; /* List of other nfs_server structs * that share the same client */ struct list_head master_link; /* link in master servers list */ struct rpc_clnt * client; /* RPC client handle */ struct rpc_clnt * client_acl; /* ACL RPC client handle */ struct nlm_host *nlm_host; /* NLM client handle */ struct nfs_iostats __percpu *io_stats; /* I/O statistics */ wait_queue_head_t write_congestion_wait; /* wait until write congestion eases */ atomic_long_t writeback; /* number of writeback pages */ unsigned int write_congested;/* flag set when writeback gets too high */ unsigned int flags; /* various flags */
/* The following are for internal use only. Also see uapi/linux/nfs_mount.h */#define NFS_MOUNT_LOOKUP_CACHE_NONEG 0x10000#define NFS_MOUNT_LOOKUP_CACHE_NONE 0x20000#define NFS_MOUNT_NORESVPORT 0x40000#define NFS_MOUNT_LEGACY_INTERFACE 0x80000#define NFS_MOUNT_LOCAL_FLOCK 0x100000#define NFS_MOUNT_LOCAL_FCNTL 0x200000#define NFS_MOUNT_SOFTERR 0x400000#define NFS_MOUNT_SOFTREVAL 0x800000#define NFS_MOUNT_WRITE_EAGER 0x01000000#define NFS_MOUNT_WRITE_WAIT 0x02000000#define NFS_MOUNT_TRUNK_DISCOVERY 0x04000000#define NFS_MOUNT_SHUTDOWN 0x08000000#define NFS_MOUNT_NO_ALIGNWRITE 0x10000000#define NFS_MOUNT_FORCE_RDIRPLUS 0x20000000#define NFS_MOUNT_NETUNREACH_FATAL 0x40000000
unsigned int automount_inherit; /* Properties inherited by automount */#define NFS_AUTOMOUNT_INHERIT_BSIZE 0x0001#define NFS_AUTOMOUNT_INHERIT_RSIZE 0x0002#define NFS_AUTOMOUNT_INHERIT_WSIZE 0x0004
unsigned int caps; /* server capabilities */ __u64 fattr_valid; /* Valid attributes */ unsigned int rsize; /* read size */ unsigned int rpages; /* read size (in pages) */ unsigned int wsize; /* write size */ unsigned int wtmult; /* server disk block size */ unsigned int dtsize; /* readdir size */ unsigned short port; /* "port=" setting */ unsigned int bsize; /* server block size */#ifdef CONFIG_NFS_V4_2 unsigned int gxasize; /* getxattr size */ unsigned int sxasize; /* setxattr size */ unsigned int lxasize; /* listxattr size */#endif unsigned int acregmin; /* attr cache timeouts */ unsigned int acregmax; unsigned int acdirmin; unsigned int acdirmax; unsigned int namelen; unsigned int options; /* extra options enabled by mount */ unsigned int clone_blksize; /* granularity of a CLONE operation */#define NFS_OPTION_FSCACHE 0x00000001 /* - local caching enabled */#define NFS_OPTION_MIGRATION 0x00000002 /* - NFSv4 migration enabled */
enum nfs4_change_attr_type change_attr_type;/* Description of change attribute */
struct nfs_fsid fsid; int s_sysfs_id; /* sysfs dentry index */ __u64 maxfilesize; /* maximum file size */ unsigned long mount_time; /* when this fs was mounted */ struct super_block *super; /* VFS super block */ dev_t s_dev; /* superblock dev numbers */ struct nfs_auth_info auth_info; /* parsed auth flavors */
#ifdef CONFIG_NFS_FSCACHE struct fscache_volume *fscache; /* superblock cookie */ char *fscache_uniq; /* Uniquifier (or NULL) */#endif
/* The following #defines numerically match the NFSv4 equivalents */#define NFS_FH_NOEXPIRE_WITH_OPEN (0x1)#define NFS_FH_VOLATILE_ANY (0x2)#define NFS_FH_VOL_MIGRATION (0x4)#define NFS_FH_VOL_RENAME (0x8)#define NFS_FH_RENAME_UNSAFE (NFS_FH_VOLATILE_ANY | NFS_FH_VOL_RENAME) u32 fh_expire_type; /* V4 bitmask representing file handle volatility type for this filesystem */ u32 pnfs_blksize; /* layout_blksize attr */#if IS_ENABLED(CONFIG_NFS_V4) u32 attr_bitmask[3];/* V4 bitmask representing the set of attributes supported on this filesystem */ u32 attr_bitmask_nl[3]; /* V4 bitmask representing the set of attributes supported on this filesystem excluding the label support bit. */ u32 exclcreat_bitmask[3]; /* V4 bitmask representing the set of attributes supported on this filesystem for the exclusive create. */ u32 cache_consistency_bitmask[3]; /* V4 bitmask representing the subset of change attribute, size, ctime and mtime attributes supported by the server */ u32 acl_bitmask; /* V4 bitmask representing the ACEs that are supported on this filesystem */ struct pnfs_layoutdriver_type *pnfs_curr_ld; /* Active layout driver */ unsigned int lg_reply_sz; /* Learned LAYOUTGET reply buffer size, when the layout driver's default has proved too small */ struct rpc_wait_queue roc_rpcwaitq;
/* the following fields are protected by nfs_client->cl_lock */ struct rb_root state_owners;#endif atomic64_t owner_ctr; struct list_head state_owners_lru; struct list_head layouts; struct list_head delegations; spinlock_t delegations_lock; struct list_head delegations_return; struct list_head delegations_lru; struct list_head delegations_delayed; atomic_long_t nr_active_delegations; unsigned int delegation_hash_mask; struct hlist_head *delegation_hash_table; struct list_head ss_copies; struct list_head ss_src_copies;
unsigned long delegation_flags;#define NFS4SERV_DELEGATION_EXPIRED (1) unsigned long delegation_gen; unsigned long mig_gen; unsigned long mig_status;#define NFS_MIG_IN_TRANSITION (1)#define NFS_MIG_FAILED (2)#define NFS_MIG_TSM_POSSIBLE (3)
void (*destroy)(struct nfs_server *);
atomic_t active; /* Keep trace of any activity to this server */
/* mountd-related mount options */ struct sockaddr_storage mountd_address; size_t mountd_addrlen; u32 mountd_version; unsigned short mountd_port; unsigned short mountd_protocol; struct rpc_wait_queue uoc_rpcwaitq;
/* XDR related information */ unsigned int read_hdrsize;
/* User namespace info */ const struct cred *cred; bool has_sec_mnt_opts; struct kobject kobj; struct rcu_head rcu;};
/* Server capabilities */#define NFS_CAP_READDIRPLUS (1U << 0)#define NFS_CAP_HARDLINKS (1U << 1)#define NFS_CAP_SYMLINKS (1U << 2)#define NFS_CAP_ACLS (1U << 3)#define NFS_CAP_ATOMIC_OPEN (1U << 4)#define NFS_CAP_LGOPEN (1U << 5)#define NFS_CAP_CASE_INSENSITIVE (1U << 6)#define NFS_CAP_CASE_NONPRESERVING (1U << 7)#define NFS_CAP_REBOOT_LAYOUTRETURN (1U << 8)#define NFS_CAP_OFFLOAD_STATUS (1U << 9)#define NFS_CAP_ZERO_RANGE (1U << 10)#define NFS_CAP_DIR_DELEG (1U << 11)#define NFS_CAP_OPEN_XOR (1U << 12)#define NFS_CAP_DELEGTIME (1U << 13)#define NFS_CAP_POSIX_LOCK (1U << 14)#define NFS_CAP_UIDGID_NOMAP (1U << 15)#define NFS_CAP_STATEID_NFSV41 (1U << 16)#define NFS_CAP_ATOMIC_OPEN_V1 (1U << 17)#define NFS_CAP_SECURITY_LABEL (1U << 18)#define NFS_CAP_SEEK (1U << 19)#define NFS_CAP_ALLOCATE (1U << 20)#define NFS_CAP_DEALLOCATE (1U << 21)#define NFS_CAP_LAYOUTSTATS (1U << 22)#define NFS_CAP_CLONE (1U << 23)#define NFS_CAP_COPY (1U << 24)#define NFS_CAP_OFFLOAD_CANCEL (1U << 25)#define NFS_CAP_LAYOUTERROR (1U << 26)#define NFS_CAP_COPY_NOTIFY (1U << 27)#define NFS_CAP_XATTR (1U << 28)#define NFS_CAP_READ_PLUS (1U << 29)#define NFS_CAP_FS_LOCATIONS (1U << 30)#define NFS_CAP_MOVEABLE (1U << 31)#endif