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291 lines
10 KiB
291 lines
10 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef _NFS_FS_SB |
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#define _NFS_FS_SB |
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#include <linux/list.h> |
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#include <linux/backing-dev.h> |
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#include <linux/idr.h> |
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#include <linux/wait.h> |
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#include <linux/nfs_xdr.h> |
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#include <linux/sunrpc/xprt.h> |
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#include <linux/atomic.h> |
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#include <linux/refcount.h> |
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struct nfs4_session; |
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struct nfs_iostats; |
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struct nlm_host; |
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struct nfs4_sequence_args; |
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struct nfs4_sequence_res; |
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struct nfs_server; |
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struct nfs4_minor_version_ops; |
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struct nfs41_server_scope; |
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struct nfs41_impl_id; |
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/* |
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* The nfs_client identifies our client state to the server. |
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*/ |
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struct nfs_client { |
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refcount_t cl_count; |
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atomic_t cl_mds_count; |
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int cl_cons_state; /* current construction state (-ve: init error) */ |
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#define NFS_CS_READY 0 /* ready to be used */ |
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#define NFS_CS_INITING 1 /* busy initialising */ |
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#define NFS_CS_SESSION_INITING 2 /* busy initialising session */ |
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unsigned long cl_res_state; /* NFS resources state */ |
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#define NFS_CS_CALLBACK 1 /* - callback started */ |
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#define NFS_CS_IDMAP 2 /* - idmap started */ |
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#define NFS_CS_RENEWD 3 /* - renewd started */ |
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#define NFS_CS_STOP_RENEW 4 /* no more state to renew */ |
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#define NFS_CS_CHECK_LEASE_TIME 5 /* need to check lease time */ |
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unsigned long cl_flags; /* behavior switches */ |
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#define NFS_CS_NORESVPORT 0 /* - use ephemeral src port */ |
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#define NFS_CS_DISCRTRY 1 /* - disconnect on RPC retry */ |
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#define NFS_CS_MIGRATION 2 /* - transparent state migr */ |
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#define NFS_CS_INFINITE_SLOTS 3 /* - don't limit TCP slots */ |
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#define NFS_CS_NO_RETRANS_TIMEOUT 4 /* - Disable retransmit timeouts */ |
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#define NFS_CS_TSM_POSSIBLE 5 /* - Maybe state migration */ |
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#define NFS_CS_NOPING 6 /* - don't ping on connect */ |
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#define NFS_CS_DS 7 /* - Server is a DS */ |
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#define NFS_CS_REUSEPORT 8 /* - reuse src port on reconnect */ |
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struct sockaddr_storage cl_addr; /* server identifier */ |
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size_t cl_addrlen; |
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char * cl_hostname; /* hostname of server */ |
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char * cl_acceptor; /* GSSAPI acceptor name */ |
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struct list_head cl_share_link; /* link in global client list */ |
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struct list_head cl_superblocks; /* List of nfs_server structs */ |
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struct rpc_clnt * cl_rpcclient; |
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const struct nfs_rpc_ops *rpc_ops; /* NFS protocol vector */ |
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int cl_proto; /* Network transport protocol */ |
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struct nfs_subversion * cl_nfs_mod; /* pointer to nfs version module */ |
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u32 cl_minorversion;/* NFSv4 minorversion */ |
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unsigned int cl_nconnect; /* Number of connections */ |
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unsigned int cl_max_connect; /* max number of xprts allowed */ |
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const char * cl_principal; /* used for machine cred */ |
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#if IS_ENABLED(CONFIG_NFS_V4) |
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struct list_head cl_ds_clients; /* auth flavor data servers */ |
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u64 cl_clientid; /* constant */ |
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nfs4_verifier cl_confirm; /* Clientid verifier */ |
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unsigned long cl_state; |
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spinlock_t cl_lock; |
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unsigned long cl_lease_time; |
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unsigned long cl_last_renewal; |
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struct delayed_work cl_renewd; |
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struct rpc_wait_queue cl_rpcwaitq; |
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/* idmapper */ |
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struct idmap * cl_idmap; |
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/* Client owner identifier */ |
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const char * cl_owner_id; |
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u32 cl_cb_ident; /* v4.0 callback identifier */ |
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const struct nfs4_minor_version_ops *cl_mvops; |
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unsigned long cl_mig_gen; |
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/* NFSv4.0 transport blocking */ |
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struct nfs4_slot_table *cl_slot_tbl; |
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/* The sequence id to use for the next CREATE_SESSION */ |
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u32 cl_seqid; |
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/* The flags used for obtaining the clientid during EXCHANGE_ID */ |
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u32 cl_exchange_flags; |
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struct nfs4_session *cl_session; /* shared session */ |
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bool cl_preserve_clid; |
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struct nfs41_server_owner *cl_serverowner; |
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struct nfs41_server_scope *cl_serverscope; |
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struct nfs41_impl_id *cl_implid; |
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/* nfs 4.1+ state protection modes: */ |
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unsigned long cl_sp4_flags; |
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#define NFS_SP4_MACH_CRED_MINIMAL 1 /* Minimal sp4_mach_cred - state ops |
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* must use machine cred */ |
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#define NFS_SP4_MACH_CRED_CLEANUP 2 /* CLOSE and LOCKU */ |
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#define NFS_SP4_MACH_CRED_SECINFO 3 /* SECINFO and SECINFO_NO_NAME */ |
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#define NFS_SP4_MACH_CRED_STATEID 4 /* TEST_STATEID and FREE_STATEID */ |
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#define NFS_SP4_MACH_CRED_WRITE 5 /* WRITE */ |
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#define NFS_SP4_MACH_CRED_COMMIT 6 /* COMMIT */ |
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#define NFS_SP4_MACH_CRED_PNFS_CLEANUP 7 /* LAYOUTRETURN */ |
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#if IS_ENABLED(CONFIG_NFS_V4_1) |
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wait_queue_head_t cl_lock_waitq; |
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#endif /* CONFIG_NFS_V4_1 */ |
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#endif /* CONFIG_NFS_V4 */ |
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/* Our own IP address, as a null-terminated string. |
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* This is used to generate the mv0 callback address. |
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*/ |
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char cl_ipaddr[48]; |
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struct net *cl_net; |
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struct list_head pending_cb_stateids; |
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}; |
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/* |
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* NFS client parameters stored in the superblock. |
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*/ |
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struct nfs_server { |
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struct nfs_client * nfs_client; /* shared client and NFS4 state */ |
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struct list_head client_link; /* List of other nfs_server structs |
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* that share the same client |
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*/ |
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struct list_head master_link; /* link in master servers list */ |
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struct rpc_clnt * client; /* RPC client handle */ |
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struct rpc_clnt * client_acl; /* ACL RPC client handle */ |
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struct nlm_host *nlm_host; /* NLM client handle */ |
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struct nfs_iostats __percpu *io_stats; /* I/O statistics */ |
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atomic_long_t writeback; /* number of writeback pages */ |
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unsigned int write_congested;/* flag set when writeback gets too high */ |
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unsigned int flags; /* various flags */ |
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/* The following are for internal use only. Also see uapi/linux/nfs_mount.h */ |
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#define NFS_MOUNT_LOOKUP_CACHE_NONEG 0x10000 |
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#define NFS_MOUNT_LOOKUP_CACHE_NONE 0x20000 |
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#define NFS_MOUNT_NORESVPORT 0x40000 |
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#define NFS_MOUNT_LEGACY_INTERFACE 0x80000 |
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#define NFS_MOUNT_LOCAL_FLOCK 0x100000 |
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#define NFS_MOUNT_LOCAL_FCNTL 0x200000 |
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#define NFS_MOUNT_SOFTERR 0x400000 |
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#define NFS_MOUNT_SOFTREVAL 0x800000 |
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#define NFS_MOUNT_WRITE_EAGER 0x01000000 |
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#define NFS_MOUNT_WRITE_WAIT 0x02000000 |
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#define NFS_MOUNT_TRUNK_DISCOVERY 0x04000000 |
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unsigned int fattr_valid; /* Valid attributes */ |
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unsigned int caps; /* server capabilities */ |
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unsigned int rsize; /* read size */ |
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unsigned int rpages; /* read size (in pages) */ |
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unsigned int wsize; /* write size */ |
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unsigned int wpages; /* write size (in pages) */ |
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unsigned int wtmult; /* server disk block size */ |
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unsigned int dtsize; /* readdir size */ |
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unsigned short port; /* "port=" setting */ |
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unsigned int bsize; /* server block size */ |
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#ifdef CONFIG_NFS_V4_2 |
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unsigned int gxasize; /* getxattr size */ |
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unsigned int sxasize; /* setxattr size */ |
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unsigned int lxasize; /* listxattr size */ |
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#endif |
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unsigned int acregmin; /* attr cache timeouts */ |
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unsigned int acregmax; |
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unsigned int acdirmin; |
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unsigned int acdirmax; |
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unsigned int namelen; |
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unsigned int options; /* extra options enabled by mount */ |
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unsigned int clone_blksize; /* granularity of a CLONE operation */ |
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#define NFS_OPTION_FSCACHE 0x00000001 /* - local caching enabled */ |
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#define NFS_OPTION_MIGRATION 0x00000002 /* - NFSv4 migration enabled */ |
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enum nfs4_change_attr_type |
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change_attr_type;/* Description of change attribute */ |
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struct nfs_fsid fsid; |
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__u64 maxfilesize; /* maximum file size */ |
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struct timespec64 time_delta; /* smallest time granularity */ |
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unsigned long mount_time; /* when this fs was mounted */ |
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struct super_block *super; /* VFS super block */ |
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dev_t s_dev; /* superblock dev numbers */ |
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struct nfs_auth_info auth_info; /* parsed auth flavors */ |
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#ifdef CONFIG_NFS_FSCACHE |
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struct fscache_volume *fscache; /* superblock cookie */ |
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char *fscache_uniq; /* Uniquifier (or NULL) */ |
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#endif |
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u32 pnfs_blksize; /* layout_blksize attr */ |
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#if IS_ENABLED(CONFIG_NFS_V4) |
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u32 attr_bitmask[3];/* V4 bitmask representing the set |
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of attributes supported on this |
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filesystem */ |
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u32 attr_bitmask_nl[3]; |
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/* V4 bitmask representing the |
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set of attributes supported |
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on this filesystem excluding |
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the label support bit. */ |
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u32 exclcreat_bitmask[3]; |
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/* V4 bitmask representing the |
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set of attributes supported |
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on this filesystem for the |
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exclusive create. */ |
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u32 cache_consistency_bitmask[3]; |
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/* V4 bitmask representing the subset |
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of change attribute, size, ctime |
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and mtime attributes supported by |
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the server */ |
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u32 acl_bitmask; /* V4 bitmask representing the ACEs |
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that are supported on this |
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filesystem */ |
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u32 fh_expire_type; /* V4 bitmask representing file |
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handle volatility type for |
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this filesystem */ |
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struct pnfs_layoutdriver_type *pnfs_curr_ld; /* Active layout driver */ |
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struct rpc_wait_queue roc_rpcwaitq; |
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void *pnfs_ld_data; /* per mount point data */ |
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/* the following fields are protected by nfs_client->cl_lock */ |
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struct rb_root state_owners; |
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#endif |
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struct ida openowner_id; |
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struct ida lockowner_id; |
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struct list_head state_owners_lru; |
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struct list_head layouts; |
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struct list_head delegations; |
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struct list_head ss_copies; |
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unsigned long mig_gen; |
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unsigned long mig_status; |
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#define NFS_MIG_IN_TRANSITION (1) |
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#define NFS_MIG_FAILED (2) |
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#define NFS_MIG_TSM_POSSIBLE (3) |
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void (*destroy)(struct nfs_server *); |
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atomic_t active; /* Keep trace of any activity to this server */ |
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/* mountd-related mount options */ |
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struct sockaddr_storage mountd_address; |
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size_t mountd_addrlen; |
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u32 mountd_version; |
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unsigned short mountd_port; |
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unsigned short mountd_protocol; |
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struct rpc_wait_queue uoc_rpcwaitq; |
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/* XDR related information */ |
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unsigned int read_hdrsize; |
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/* User namespace info */ |
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const struct cred *cred; |
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bool has_sec_mnt_opts; |
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}; |
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/* Server capabilities */ |
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#define NFS_CAP_READDIRPLUS (1U << 0) |
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#define NFS_CAP_HARDLINKS (1U << 1) |
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#define NFS_CAP_SYMLINKS (1U << 2) |
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#define NFS_CAP_ACLS (1U << 3) |
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#define NFS_CAP_ATOMIC_OPEN (1U << 4) |
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#define NFS_CAP_LGOPEN (1U << 5) |
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#define NFS_CAP_CASE_INSENSITIVE (1U << 6) |
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#define NFS_CAP_CASE_PRESERVING (1U << 7) |
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#define NFS_CAP_POSIX_LOCK (1U << 14) |
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#define NFS_CAP_UIDGID_NOMAP (1U << 15) |
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#define NFS_CAP_STATEID_NFSV41 (1U << 16) |
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#define NFS_CAP_ATOMIC_OPEN_V1 (1U << 17) |
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#define NFS_CAP_SECURITY_LABEL (1U << 18) |
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#define NFS_CAP_SEEK (1U << 19) |
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#define NFS_CAP_ALLOCATE (1U << 20) |
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#define NFS_CAP_DEALLOCATE (1U << 21) |
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#define NFS_CAP_LAYOUTSTATS (1U << 22) |
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#define NFS_CAP_CLONE (1U << 23) |
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#define NFS_CAP_COPY (1U << 24) |
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#define NFS_CAP_OFFLOAD_CANCEL (1U << 25) |
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#define NFS_CAP_LAYOUTERROR (1U << 26) |
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#define NFS_CAP_COPY_NOTIFY (1U << 27) |
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#define NFS_CAP_XATTR (1U << 28) |
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#define NFS_CAP_READ_PLUS (1U << 29) |
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#define NFS_CAP_FS_LOCATIONS (1U << 30) |
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#define NFS_CAP_MOVEABLE (1U << 31) |
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#endif
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