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nfs_xdr.h
/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_NFS_XDR_H #define _LINUX_NFS_XDR_H #include <linux/nfsacl.h> #include <linux/sunrpc/gss_api.h> /* * To change the maximum rsize and wsize supported by the NFS client, adjust * NFS_MAX_FILE_IO_SIZE. 64KB is a typical maximum, but some servers can * support a megabyte or more. The default is left at 4096 bytes, which is * reasonable for NFS over UDP. */ #define NFS_MAX_FILE_IO_SIZE (1048576U) #define NFS_DEF_FILE_IO_SIZE (4096U) #define NFS_MIN_FILE_IO_SIZE (1024U) #define NFS_BITMASK_SZ 3 struct nfs4_string { unsigned int len; char *data; }; struct nfs_fsid { uint64_t major; uint64_t minor; }; /* * Helper for checking equality between 2 fsids. */ static inline int nfs_fsid_equal(const struct nfs_fsid *a, const struct nfs_fsid *b) { return a->major == b->major && a->minor == b->minor; } struct nfs4_threshold { __u32 bm; __u32 l_type; __u64 rd_sz; __u64 wr_sz; __u64 rd_io_sz; __u64 wr_io_sz; }; struct nfs_fattr { unsigned int valid; /* which fields are valid */ umode_t mode; __u32 nlink; kuid_t uid; kgid_t gid; dev_t rdev; __u64 size; union { struct { __u32 blocksize; __u32 blocks; } nfs2; struct { __u64 used; } nfs3; } du; struct nfs_fsid fsid; __u64 fileid; __u64 mounted_on_fileid; struct timespec64 atime; struct timespec64 mtime; struct timespec64 ctime; __u64 change_attr; /* NFSv4 change attribute */ __u64 pre_change_attr;/* pre-op NFSv4 change attribute */ __u64 pre_size; /* pre_op_attr.size */ struct timespec64 pre_mtime; /* pre_op_attr.mtime */ struct timespec64 pre_ctime; /* pre_op_attr.ctime */ unsigned long time_start; unsigned long gencount; struct nfs4_string *owner_name; struct nfs4_string *group_name; struct nfs4_threshold *mdsthreshold; /* pNFS threshold hints */ struct nfs4_label *label; }; #define NFS_ATTR_FATTR_TYPE (1U << 0) #define NFS_ATTR_FATTR_MODE (1U << 1) #define NFS_ATTR_FATTR_NLINK (1U << 2) #define NFS_ATTR_FATTR_OWNER (1U << 3) #define NFS_ATTR_FATTR_GROUP (1U << 4) #define NFS_ATTR_FATTR_RDEV (1U << 5) #define NFS_ATTR_FATTR_SIZE (1U << 6) #define NFS_ATTR_FATTR_PRESIZE (1U << 7) #define NFS_ATTR_FATTR_BLOCKS_USED (1U << 8) #define NFS_ATTR_FATTR_SPACE_USED (1U << 9) #define NFS_ATTR_FATTR_FSID (1U << 10) #define NFS_ATTR_FATTR_FILEID (1U << 11) #define NFS_ATTR_FATTR_ATIME (1U << 12) #define NFS_ATTR_FATTR_MTIME (1U << 13) #define NFS_ATTR_FATTR_CTIME (1U << 14) #define NFS_ATTR_FATTR_PREMTIME (1U << 15) #define NFS_ATTR_FATTR_PRECTIME (1U << 16) #define NFS_ATTR_FATTR_CHANGE (1U << 17) #define NFS_ATTR_FATTR_PRECHANGE (1U << 18) #define NFS_ATTR_FATTR_V4_LOCATIONS (1U << 19) #define NFS_ATTR_FATTR_V4_REFERRAL (1U << 20) #define NFS_ATTR_FATTR_MOUNTPOINT (1U << 21) #define NFS_ATTR_FATTR_MOUNTED_ON_FILEID (1U << 22) #define NFS_ATTR_FATTR_OWNER_NAME (1U << 23) #define NFS_ATTR_FATTR_GROUP_NAME (1U << 24) #define NFS_ATTR_FATTR_V4_SECURITY_LABEL (1U << 25) #define NFS_ATTR_FATTR (NFS_ATTR_FATTR_TYPE \ | NFS_ATTR_FATTR_MODE \ | NFS_ATTR_FATTR_NLINK \ | NFS_ATTR_FATTR_OWNER \ | NFS_ATTR_FATTR_GROUP \ | NFS_ATTR_FATTR_RDEV \ | NFS_ATTR_FATTR_SIZE \ | NFS_ATTR_FATTR_FSID \ | NFS_ATTR_FATTR_FILEID \ | NFS_ATTR_FATTR_ATIME \ | NFS_ATTR_FATTR_MTIME \ | NFS_ATTR_FATTR_CTIME \ | NFS_ATTR_FATTR_CHANGE) #define NFS_ATTR_FATTR_V2 (NFS_ATTR_FATTR \ | NFS_ATTR_FATTR_BLOCKS_USED) #define NFS_ATTR_FATTR_V3 (NFS_ATTR_FATTR \ | NFS_ATTR_FATTR_SPACE_USED) #define NFS_ATTR_FATTR_V4 (NFS_ATTR_FATTR \ | NFS_ATTR_FATTR_SPACE_USED \ | NFS_ATTR_FATTR_V4_SECURITY_LABEL) /* * Maximal number of supported layout drivers. */ #define NFS_MAX_LAYOUT_TYPES 8 /* * Info on the file system */ struct nfs_fsinfo { struct nfs_fattr *fattr; /* Post-op attributes */ __u32 rtmax; /* max. read transfer size */ __u32 rtpref; /* pref. read transfer size */ __u32 rtmult; /* reads should be multiple of this */ __u32 wtmax; /* max. write transfer size */ __u32 wtpref; /* pref. write transfer size */ __u32 wtmult; /* writes should be multiple of this */ __u32 dtpref; /* pref. readdir transfer size */ __u64 maxfilesize; struct timespec64 time_delta; /* server time granularity */ __u32 lease_time; /* in seconds */ __u32 nlayouttypes; /* number of layouttypes */ __u32 layouttype[NFS_MAX_LAYOUT_TYPES]; /* supported pnfs layout driver */ __u32 blksize; /* preferred pnfs io block size */ __u32 clone_blksize; /* granularity of a CLONE operation */ enum nfs4_change_attr_type change_attr_type; /* Info about change attr */ __u32 xattr_support; /* User xattrs supported */ }; struct nfs_fsstat { struct nfs_fattr *fattr; /* Post-op attributes */ __u64 tbytes; /* total size in bytes */ __u64 fbytes; /* # of free bytes */ __u64 abytes; /* # of bytes available to user */ __u64 tfiles; /* # of files */ __u64 ffiles; /* # of free files */ __u64 afiles; /* # of files available to user */ }; struct nfs2_fsstat { __u32 tsize; /* Server transfer size */ __u32 bsize; /* Filesystem block size */ __u32 blocks; /* No. of "bsize" blocks on filesystem */ __u32 bfree; /* No. of free "bsize" blocks */ __u32 bavail; /* No. of available "bsize" blocks */ }; struct nfs_pathconf { struct nfs_fattr *fattr; /* Post-op attributes */ __u32 max_link; /* max # of hard links */ __u32 max_namelen; /* max name length */ }; struct nfs4_change_info { u32 atomic; u64 before; u64 after; }; struct nfs_seqid; /* nfs41 sessions channel attributes */ struct nfs4_channel_attrs { u32 max_rqst_sz; u32 max_resp_sz; u32 max_resp_sz_cached; u32 max_ops; u32 max_reqs; }; struct nfs4_slot; struct nfs4_sequence_args { struct nfs4_slot *sa_slot; u8 sa_cache_this : 1, sa_privileged : 1; }; struct nfs4_sequence_res { struct nfs4_slot *sr_slot; /* slot used to send request */ unsigned long sr_timestamp; int sr_status; /* sequence operation status */ u32 sr_status_flags; u32 sr_highest_slotid; u32 sr_target_highest_slotid; }; struct nfs4_get_lease_time_args { struct nfs4_sequence_args la_seq_args; }; struct nfs4_get_lease_time_res { struct nfs4_sequence_res lr_seq_res; struct nfs_fsinfo *lr_fsinfo; }; struct xdr_stream; struct nfs4_xdr_opaque_data; struct nfs4_xdr_opaque_ops { void (*encode)(struct xdr_stream *, const void *args, const struct nfs4_xdr_opaque_data *); void (*free)(struct nfs4_xdr_opaque_data *); }; struct nfs4_xdr_opaque_data { const struct nfs4_xdr_opaque_ops *ops; void *data; }; #define PNFS_LAYOUT_MAXSIZE 4096 struct nfs4_layoutdriver_data { struct page **pages; __u32 pglen; __u32 len; }; struct pnfs_layout_range { u32 iomode; u64 offset; u64 length; }; struct nfs4_layoutget_args { struct nfs4_sequence_args seq_args; __u32 type; struct pnfs_layout_range range; __u64 minlength; __u32 maxcount; struct inode *inode; struct nfs_open_context *ctx; nfs4_stateid stateid; struct nfs4_layoutdriver_data layout; }; struct nfs4_layoutget_res { struct nfs4_sequence_res seq_res; int status; __u32 return_on_close; struct pnfs_layout_range range; __u32 type; nfs4_stateid stateid; struct nfs4_layoutdriver_data *layoutp; }; struct nfs4_layoutget { struct nfs4_layoutget_args args; struct nfs4_layoutget_res res; const struct cred *cred; struct pnfs_layout_hdr *lo; gfp_t gfp_flags; }; struct nfs4_getdeviceinfo_args { struct nfs4_sequence_args seq_args; struct pnfs_device *pdev; __u32 notify_types; }; struct nfs4_getdeviceinfo_res { struct nfs4_sequence_res seq_res; struct pnfs_device *pdev; __u32 notification; }; struct nfs4_layoutcommit_args { struct nfs4_sequence_args seq_args; nfs4_stateid stateid; __u64 lastbytewritten; struct inode *inode; const u32 *bitmask; size_t layoutupdate_len; struct page *layoutupdate_page; struct page **layoutupdate_pages; __be32 *start_p; }; struct nfs4_layoutcommit_res { struct nfs4_sequence_res seq_res; struct nfs_fattr *fattr; const struct nfs_server *server; int status; }; struct nfs4_layoutcommit_data { struct rpc_task task; struct nfs_fattr fattr; struct list_head lseg_list; const struct cred *cred; struct inode *inode; struct nfs4_layoutcommit_args args; struct nfs4_layoutcommit_res res; }; struct nfs4_layoutreturn_args { struct nfs4_sequence_args seq_args; struct pnfs_layout_hdr *layout; struct inode *inode; struct pnfs_layout_range range; nfs4_stateid stateid; __u32 layout_type; struct nfs4_xdr_opaque_data *ld_private; }; struct nfs4_layoutreturn_res { struct nfs4_sequence_res seq_res; u32 lrs_present; nfs4_stateid stateid; }; struct nfs4_layoutreturn { struct nfs4_layoutreturn_args args; struct nfs4_layoutreturn_res res; const struct cred *cred; struct nfs_client *clp; struct inode *inode; int rpc_status; struct nfs4_xdr_opaque_data ld_private; }; #define PNFS_LAYOUTSTATS_MAXSIZE 256 struct nfs42_layoutstat_args; struct nfs42_layoutstat_devinfo; typedef void (*layoutstats_encode_t)(struct xdr_stream *, struct nfs42_layoutstat_args *, struct nfs42_layoutstat_devinfo *); /* Per file per deviceid layoutstats */ struct nfs42_layoutstat_devinfo { struct nfs4_deviceid dev_id; __u64 offset; __u64 length; __u64 read_count; __u64 read_bytes; __u64 write_count; __u64 write_bytes; __u32 layout_type; struct nfs4_xdr_opaque_data ld_private; }; struct nfs42_layoutstat_args { struct nfs4_sequence_args seq_args; struct nfs_fh *fh; struct inode *inode; nfs4_stateid stateid; int num_dev; struct nfs42_layoutstat_devinfo *devinfo; }; struct nfs42_layoutstat_res { struct nfs4_sequence_res seq_res; int num_dev; int rpc_status; }; struct nfs42_layoutstat_data { struct inode *inode; struct nfs42_layoutstat_args args; struct nfs42_layoutstat_res res; }; struct nfs42_device_error { struct nfs4_deviceid dev_id; int status; enum nfs_opnum4 opnum; }; struct nfs42_layout_error { __u64 offset; __u64 length; nfs4_stateid stateid; struct nfs42_device_error errors[1]; }; #define NFS42_LAYOUTERROR_MAX 5 struct nfs42_layouterror_args { struct nfs4_sequence_args seq_args; struct inode *inode; unsigned int num_errors; struct nfs42_layout_error errors[NFS42_LAYOUTERROR_MAX]; }; struct nfs42_layouterror_res { struct nfs4_sequence_res seq_res; unsigned int num_errors; int rpc_status; }; struct nfs42_layouterror_data { struct nfs42_layouterror_args args; struct nfs42_layouterror_res res; struct inode *inode; struct pnfs_layout_segment *lseg; }; struct nfs42_clone_args { struct nfs4_sequence_args seq_args; struct nfs_fh *src_fh; struct nfs_fh *dst_fh; nfs4_stateid src_stateid; nfs4_stateid dst_stateid; __u64 src_offset; __u64 dst_offset; __u64 count; const u32 *dst_bitmask; }; struct nfs42_clone_res { struct nfs4_sequence_res seq_res; unsigned int rpc_status; struct nfs_fattr *dst_fattr; const struct nfs_server *server; }; struct stateowner_id { __u64 create_time; __u32 uniquifier; }; /* * Arguments to the open call. */ struct nfs_openargs { struct nfs4_sequence_args seq_args; const struct nfs_fh * fh; struct nfs_seqid * seqid; int open_flags; fmode_t fmode; u32 share_access; u32 access; __u64 clientid; struct stateowner_id id; union { struct { struct iattr * attrs; /* UNCHECKED, GUARDED, EXCLUSIVE4_1 */ nfs4_verifier verifier; /* EXCLUSIVE */ }; nfs4_stateid delegation; /* CLAIM_DELEGATE_CUR */ fmode_t delegation_type; /* CLAIM_PREVIOUS */ } u; const struct qstr * name; const struct nfs_server *server; /* Needed for ID mapping */ const u32 * bitmask; const u32 * open_bitmap; enum open_claim_type4 claim; enum createmode4 createmode; const struct nfs4_label *label; umode_t umask; struct nfs4_layoutget_args *lg_args; }; struct nfs_openres { struct nfs4_sequence_res seq_res; nfs4_stateid stateid; struct nfs_fh fh; struct nfs4_change_info cinfo; __u32 rflags; struct nfs_fattr * f_attr; struct nfs_seqid * seqid; const struct nfs_server *server; fmode_t delegation_type; nfs4_stateid delegation; unsigned long pagemod_limit; __u32 do_recall; __u32 attrset[NFS4_BITMAP_SIZE]; struct nfs4_string *owner; struct nfs4_string *group_owner; __u32 access_request; __u32 access_supported; __u32 access_result; struct nfs4_layoutget_res *lg_res; }; /* * Arguments to the open_confirm call. */ struct nfs_open_confirmargs { struct nfs4_sequence_args seq_args; const struct nfs_fh * fh; nfs4_stateid * stateid; struct nfs_seqid * seqid; }; struct nfs_open_confirmres { struct nfs4_sequence_res seq_res; nfs4_stateid stateid; struct nfs_seqid * seqid; }; /* * Arguments to the close call. */ struct nfs_closeargs { struct nfs4_sequence_args seq_args; struct nfs_fh * fh; nfs4_stateid stateid; struct nfs_seqid * seqid; fmode_t fmode; u32 share_access; const u32 * bitmask; u32 bitmask_store[NFS_BITMASK_SZ]; struct nfs4_layoutreturn_args *lr_args; }; struct nfs_closeres { struct nfs4_sequence_res seq_res; nfs4_stateid stateid; struct nfs_fattr * fattr; struct nfs_seqid * seqid; const struct nfs_server *server; struct nfs4_layoutreturn_res *lr_res; int lr_ret; }; /* * * Arguments to the lock,lockt, and locku call. * */ struct nfs_lowner { __u64 clientid; __u64 id; dev_t s_dev; }; struct nfs_lock_args { struct nfs4_sequence_args seq_args; struct nfs_fh * fh; struct file_lock * fl; struct nfs_seqid * lock_seqid; nfs4_stateid lock_stateid; struct nfs_seqid * open_seqid; nfs4_stateid open_stateid; struct nfs_lowner lock_owner; unsigned char block : 1; unsigned char reclaim : 1; unsigned char new_lock : 1; unsigned char new_lock_owner : 1; }; struct nfs_lock_res { struct nfs4_sequence_res seq_res; nfs4_stateid stateid; struct nfs_seqid * lock_seqid; struct nfs_seqid * open_seqid; }; struct nfs_locku_args { struct nfs4_sequence_args seq_args; struct nfs_fh * fh; struct file_lock * fl; struct nfs_seqid * seqid; nfs4_stateid stateid; }; struct nfs_locku_res { struct nfs4_sequence_res seq_res; nfs4_stateid stateid; struct nfs_seqid * seqid; }; struct nfs_lockt_args { struct nfs4_sequence_args seq_args; struct nfs_fh * fh; struct file_lock * fl; struct nfs_lowner lock_owner; }; struct nfs_lockt_res { struct nfs4_sequence_res seq_res; struct file_lock * denied; /* LOCK, LOCKT failed */ }; struct nfs_release_lockowner_args { struct nfs4_sequence_args seq_args; struct nfs_lowner lock_owner; }; struct nfs_release_lockowner_res { struct nfs4_sequence_res seq_res; }; struct nfs4_delegreturnargs { struct nfs4_sequence_args seq_args; const struct nfs_fh *fhandle; const nfs4_stateid *stateid; const u32 *bitmask; u32 bitmask_store[NFS_BITMASK_SZ]; struct nfs4_layoutreturn_args *lr_args; }; struct nfs4_delegreturnres { struct nfs4_sequence_res seq_res; struct nfs_fattr * fattr; struct nfs_server *server; struct nfs4_layoutreturn_res *lr_res; int lr_ret; }; /* * Arguments to the write call. */ struct nfs_write_verifier { char data[8]; }; struct nfs_writeverf { struct nfs_write_verifier verifier; enum nfs3_stable_how committed; }; /* * Arguments shared by the read and write call. */ struct nfs_pgio_args { struct nfs4_sequence_args seq_args; struct nfs_fh * fh; struct nfs_open_context *context; struct nfs_lock_context *lock_context; nfs4_stateid stateid; __u64 offset; __u32 count; unsigned int pgbase; struct page ** pages; union { unsigned int replen; /* used by read */ struct { const u32 * bitmask; /* used by write */ u32 bitmask_store[NFS_BITMASK_SZ]; /* used by write */ enum nfs3_stable_how stable; /* used by write */ }; }; }; struct nfs_pgio_res { struct nfs4_sequence_res seq_res; struct nfs_fattr * fattr; __u64 count; __u32 op_status; union { struct { unsigned int replen; /* used by read */ int eof; /* used by read */ void * scratch; /* used by read */ }; struct { struct nfs_writeverf * verf; /* used by write */ const struct nfs_server *server; /* used by write */ }; }; }; /* * Arguments to the commit call. */ struct nfs_commitargs { struct nfs4_sequence_args seq_args; struct nfs_fh *fh; __u64 offset; __u32 count; const u32 *bitmask; }; struct nfs_commitres { struct nfs4_sequence_res seq_res; __u32 op_status; struct nfs_fattr *fattr; struct nfs_writeverf *verf; const struct nfs_server *server; }; /* * Common arguments to the unlink call */ struct nfs_removeargs { struct nfs4_sequence_args seq_args; const struct nfs_fh *fh; struct qstr name; }; struct nfs_removeres { struct nfs4_sequence_res seq_res; struct nfs_server *server; struct nfs_fattr *dir_attr; struct nfs4_change_info cinfo; }; /* * Common arguments to the rename call */ struct nfs_renameargs { struct nfs4_sequence_args seq_args; const struct nfs_fh *old_dir; const struct nfs_fh *new_dir; const struct qstr *old_name; const struct qstr *new_name; }; struct nfs_renameres { struct nfs4_sequence_res seq_res; struct nfs_server *server; struct nfs4_change_info old_cinfo; struct nfs_fattr *old_fattr; struct nfs4_change_info new_cinfo; struct nfs_fattr *new_fattr; }; /* parsed sec= options */ #define NFS_AUTH_INFO_MAX_FLAVORS 12 /* see fs/nfs/super.c */ struct nfs_auth_info { unsigned int flavor_len; rpc_authflavor_t flavors[NFS_AUTH_INFO_MAX_FLAVORS]; }; /* * Argument struct for decode_entry function */ struct nfs_entry { __u64 ino; __u64 cookie; const char * name; unsigned int len; int eof; struct nfs_fh * fh; struct nfs_fattr * fattr; unsigned char d_type; struct nfs_server * server; }; struct nfs_readdir_arg { struct dentry *dentry; const struct cred *cred; __be32 *verf; u64 cookie; struct page **pages; unsigned int page_len; bool plus; }; struct nfs_readdir_res { __be32 *verf; }; /* * The following types are for NFSv2 only. */ struct nfs_sattrargs { struct nfs_fh * fh; struct iattr * sattr; }; struct nfs_diropargs { struct nfs_fh * fh; const char * name; unsigned int len; }; struct nfs_createargs { struct nfs_fh * fh; const char * name; unsigned int len; struct iattr * sattr; }; struct nfs_setattrargs { struct nfs4_sequence_args seq_args; struct nfs_fh * fh; nfs4_stateid stateid; struct iattr * iap; const struct nfs_server * server; /* Needed for name mapping */ const u32 * bitmask; const struct nfs4_label *label; }; enum nfs4_acl_type { NFS4ACL_NONE = 0, NFS4ACL_ACL, NFS4ACL_DACL, NFS4ACL_SACL, }; struct nfs_setaclargs { struct nfs4_sequence_args seq_args; struct nfs_fh * fh; enum nfs4_acl_type acl_type; size_t acl_len; struct page ** acl_pages; }; struct nfs_setaclres { struct nfs4_sequence_res seq_res; }; struct nfs_getaclargs { struct nfs4_sequence_args seq_args; struct nfs_fh * fh; enum nfs4_acl_type acl_type; size_t acl_len; struct page ** acl_pages; }; /* getxattr ACL interface flags */ #define NFS4_ACL_TRUNC 0x0001 /* ACL was truncated */ struct nfs_getaclres { struct nfs4_sequence_res seq_res; enum nfs4_acl_type acl_type; size_t acl_len; size_t acl_data_offset; int acl_flags; struct page * acl_scratch; }; struct nfs_setattrres { struct nfs4_sequence_res seq_res; struct nfs_fattr * fattr; const struct nfs_server * server; }; struct nfs_linkargs { struct nfs_fh * fromfh; struct nfs_fh * tofh; const char * toname; unsigned int tolen; }; struct nfs_symlinkargs { struct nfs_fh * fromfh; const char * fromname; unsigned int fromlen; struct page ** pages; unsigned int pathlen; struct iattr * sattr; }; struct nfs_readdirargs { struct nfs_fh * fh; __u32 cookie; unsigned int count; struct page ** pages; }; struct nfs3_getaclargs { struct nfs_fh * fh; int mask; struct page ** pages; }; struct nfs3_setaclargs { struct inode * inode; int mask; struct posix_acl * acl_access; struct posix_acl * acl_default; size_t len; unsigned int npages; struct page ** pages; }; struct nfs_diropok { struct nfs_fh * fh; struct nfs_fattr * fattr; }; struct nfs_readlinkargs { struct nfs_fh * fh; unsigned int pgbase; unsigned int pglen; struct page ** pages; }; struct nfs3_sattrargs { struct nfs_fh * fh; struct iattr * sattr; unsigned int guard; struct timespec64 guardtime; }; struct nfs3_diropargs { struct nfs_fh * fh; const char * name; unsigned int len; }; struct nfs3_accessargs { struct nfs_fh * fh; __u32 access; }; struct nfs3_createargs { struct nfs_fh * fh; const char * name; unsigned int len; struct iattr * sattr; enum nfs3_createmode createmode; __be32 verifier[2]; }; struct nfs3_mkdirargs { struct nfs_fh * fh; const char * name; unsigned int len; struct iattr * sattr; }; struct nfs3_symlinkargs { struct nfs_fh * fromfh; const char * fromname; unsigned int fromlen; struct page ** pages; unsigned int pathlen; struct iattr * sattr; }; struct nfs3_mknodargs { struct nfs_fh * fh; const char * name; unsigned int len; enum nfs3_ftype type; struct iattr * sattr; dev_t rdev; }; struct nfs3_linkargs { struct nfs_fh * fromfh; struct nfs_fh * tofh; const char * toname; unsigned int tolen; }; struct nfs3_readdirargs { struct nfs_fh * fh; __u64 cookie; __be32 verf[2]; bool plus; unsigned int count; struct page ** pages; }; struct nfs3_diropres { struct nfs_fattr * dir_attr; struct nfs_fh * fh; struct nfs_fattr * fattr; }; struct nfs3_accessres { struct nfs_fattr * fattr; __u32 access; }; struct nfs3_readlinkargs { struct nfs_fh * fh; unsigned int pgbase; unsigned int pglen; struct page ** pages; }; struct nfs3_linkres { struct nfs_fattr * dir_attr; struct nfs_fattr * fattr; }; struct nfs3_readdirres { struct nfs_fattr * dir_attr; __be32 * verf; bool plus; }; struct nfs3_getaclres { struct nfs_fattr * fattr; int mask; unsigned int acl_access_count; unsigned int acl_default_count; struct posix_acl * acl_access; struct posix_acl * acl_default; }; #if IS_ENABLED(CONFIG_NFS_V4) typedef u64 clientid4; struct nfs4_accessargs { struct nfs4_sequence_args seq_args; const struct nfs_fh * fh; const u32 * bitmask; u32 access; }; struct nfs4_accessres { struct nfs4_sequence_res seq_res; const struct nfs_server * server; struct nfs_fattr * fattr; u32 supported; u32 access; }; struct nfs4_create_arg { struct nfs4_sequence_args seq_args; u32 ftype; union { struct { struct page ** pages; unsigned int len; } symlink; /* NF4LNK */ struct { u32 specdata1; u32 specdata2; } device; /* NF4BLK, NF4CHR */ } u; const struct qstr * name; const struct nfs_server * server; const struct iattr * attrs; const struct nfs_fh * dir_fh; const u32 * bitmask; const struct nfs4_label *label; umode_t umask; }; struct nfs4_create_res { struct nfs4_sequence_res seq_res; const struct nfs_server * server; struct nfs_fh * fh; struct nfs_fattr * fattr; struct nfs4_change_info dir_cinfo; }; struct nfs4_fsinfo_arg { struct nfs4_sequence_args seq_args; const struct nfs_fh * fh; const u32 * bitmask; }; struct nfs4_fsinfo_res { struct nfs4_sequence_res seq_res; struct nfs_fsinfo *fsinfo; }; struct nfs4_getattr_arg { struct nfs4_sequence_args seq_args; const struct nfs_fh * fh; const u32 * bitmask; }; struct nfs4_getattr_res { struct nfs4_sequence_res seq_res; const struct nfs_server * server; struct nfs_fattr * fattr; }; struct nfs4_link_arg { struct nfs4_sequence_args seq_args; const struct nfs_fh * fh; const struct nfs_fh * dir_fh; const struct qstr * name; const u32 * bitmask; }; struct nfs4_link_res { struct nfs4_sequence_res seq_res; const struct nfs_server * server; struct nfs_fattr * fattr; struct nfs4_change_info cinfo; struct nfs_fattr * dir_attr; }; struct nfs4_lookup_arg { struct nfs4_sequence_args seq_args; const struct nfs_fh * dir_fh; const struct qstr * name; const u32 * bitmask; }; struct nfs4_lookup_res { struct nfs4_sequence_res seq_res; const struct nfs_server * server; struct nfs_fattr * fattr; struct nfs_fh * fh; }; struct nfs4_lookupp_arg { struct nfs4_sequence_args seq_args; const struct nfs_fh *fh; const u32 *bitmask; }; struct nfs4_lookupp_res { struct nfs4_sequence_res seq_res; const struct nfs_server *server; struct nfs_fattr *fattr; struct nfs_fh *fh; }; struct nfs4_lookup_root_arg { struct nfs4_sequence_args seq_args; const u32 * bitmask; }; struct nfs4_pathconf_arg { struct nfs4_sequence_args seq_args; const struct nfs_fh * fh; const u32 * bitmask; }; struct nfs4_pathconf_res { struct nfs4_sequence_res seq_res; struct nfs_pathconf *pathconf; }; struct nfs4_readdir_arg { struct nfs4_sequence_args seq_args; const struct nfs_fh * fh; u64 cookie; nfs4_verifier verifier; u32 count; struct page ** pages; /* zero-copy data */ unsigned int pgbase; /* zero-copy data */ const u32 * bitmask; bool plus; }; struct nfs4_readdir_res { struct nfs4_sequence_res seq_res; nfs4_verifier verifier; unsigned int pgbase; }; struct nfs4_readlink { struct nfs4_sequence_args seq_args; const struct nfs_fh * fh; unsigned int pgbase; unsigned int pglen; /* zero-copy data */ struct page ** pages; /* zero-copy data */ }; struct nfs4_readlink_res { struct nfs4_sequence_res seq_res; }; struct nfs4_setclientid { const nfs4_verifier * sc_verifier; u32 sc_prog; unsigned int sc_netid_len; char sc_netid[RPCBIND_MAXNETIDLEN + 1]; unsigned int sc_uaddr_len; char sc_uaddr[RPCBIND_MAXUADDRLEN + 1]; struct nfs_client *sc_clnt; struct rpc_cred *sc_cred; }; struct nfs4_setclientid_res { u64 clientid; nfs4_verifier confirm; }; struct nfs4_statfs_arg { struct nfs4_sequence_args seq_args; const struct nfs_fh * fh; const u32 * bitmask; }; struct nfs4_statfs_res { struct nfs4_sequence_res seq_res; struct nfs_fsstat *fsstat; }; struct nfs4_server_caps_arg { struct nfs4_sequence_args seq_args; struct nfs_fh *fhandle; const u32 * bitmask; }; struct nfs4_server_caps_res { struct nfs4_sequence_res seq_res; u32 attr_bitmask[3]; u32 exclcreat_bitmask[3]; u32 acl_bitmask; u32 has_links; u32 has_symlinks; u32 fh_expire_type; u32 case_insensitive; u32 case_preserving; }; #define NFS4_PATHNAME_MAXCOMPONENTS 512 struct nfs4_pathname { unsigned int ncomponents; struct nfs4_string components[NFS4_PATHNAME_MAXCOMPONENTS]; }; #define NFS4_FS_LOCATION_MAXSERVERS 10 struct nfs4_fs_location { unsigned int nservers; struct nfs4_string servers[NFS4_FS_LOCATION_MAXSERVERS]; struct nfs4_pathname rootpath; }; #define NFS4_FS_LOCATIONS_MAXENTRIES 10 struct nfs4_fs_locations { struct nfs_fattr *fattr; const struct nfs_server *server; struct nfs4_pathname fs_path; int nlocations; struct nfs4_fs_location locations[NFS4_FS_LOCATIONS_MAXENTRIES]; }; struct nfs4_fs_locations_arg { struct nfs4_sequence_args seq_args; const struct nfs_fh *dir_fh; const struct nfs_fh *fh; const struct qstr *name; struct page *page; const u32 *bitmask; clientid4 clientid; unsigned char migration:1, renew:1; }; struct nfs4_fs_locations_res { struct nfs4_sequence_res seq_res; struct nfs4_fs_locations *fs_locations; unsigned char migration:1, renew:1; }; struct nfs4_secinfo4 { u32 flavor; struct rpcsec_gss_info flavor_info; }; struct nfs4_secinfo_flavors { unsigned int num_flavors; struct nfs4_secinfo4 flavors[]; }; struct nfs4_secinfo_arg { struct nfs4_sequence_args seq_args; const struct nfs_fh *dir_fh; const struct qstr *name; }; struct nfs4_secinfo_res { struct nfs4_sequence_res seq_res; struct nfs4_secinfo_flavors *flavors; }; struct nfs4_fsid_present_arg { struct nfs4_sequence_args seq_args; const struct nfs_fh *fh; clientid4 clientid; unsigned char renew:1; }; struct nfs4_fsid_present_res { struct nfs4_sequence_res seq_res; struct nfs_fh *fh; unsigned char renew:1; }; #endif /* CONFIG_NFS_V4 */ struct nfstime4 { u64 seconds; u32 nseconds; }; #ifdef CONFIG_NFS_V4_1 struct pnfs_commit_bucket { struct list_head written; struct list_head committing; struct pnfs_layout_segment *lseg; struct nfs_writeverf direct_verf; }; struct pnfs_commit_array { struct list_head cinfo_list; struct list_head lseg_list; struct pnfs_layout_segment *lseg; struct rcu_head rcu; refcount_t refcount; unsigned int nbuckets; struct pnfs_commit_bucket buckets[]; }; struct pnfs_ds_commit_info { struct list_head commits; unsigned int nwritten; unsigned int ncommitting; const struct pnfs_commit_ops *ops; }; struct nfs41_state_protection { u32 how; struct nfs4_op_map enforce; struct nfs4_op_map allow; }; struct nfs41_exchange_id_args { struct nfs_client *client; nfs4_verifier verifier; u32 flags; struct nfs41_state_protection state_protect; }; struct nfs41_server_owner { uint64_t minor_id; uint32_t major_id_sz; char major_id[NFS4_OPAQUE_LIMIT]; }; struct nfs41_server_scope { uint32_t server_scope_sz; char server_scope[NFS4_OPAQUE_LIMIT]; }; struct nfs41_impl_id { char domain[NFS4_OPAQUE_LIMIT + 1]; char name[NFS4_OPAQUE_LIMIT + 1]; struct nfstime4 date; }; #define MAX_BIND_CONN_TO_SESSION_RETRIES 3 struct nfs41_bind_conn_to_session_args { struct nfs_client *client; struct nfs4_sessionid sessionid; u32 dir; bool use_conn_in_rdma_mode; int retries; }; struct nfs41_bind_conn_to_session_res { struct nfs4_sessionid sessionid; u32 dir; bool use_conn_in_rdma_mode; }; struct nfs41_exchange_id_res { u64 clientid; u32 seqid; u32 flags; struct nfs41_server_owner *server_owner; struct nfs41_server_scope *server_scope; struct nfs41_impl_id *impl_id; struct nfs41_state_protection state_protect; }; struct nfs41_create_session_args { struct nfs_client *client; u64 clientid; uint32_t seqid; uint32_t flags; uint32_t cb_program; struct nfs4_channel_attrs fc_attrs; /* Fore Channel */ struct nfs4_channel_attrs bc_attrs; /* Back Channel */ }; struct nfs41_create_session_res { struct nfs4_sessionid sessionid; uint32_t seqid; uint32_t flags; struct nfs4_channel_attrs fc_attrs; /* Fore Channel */ struct nfs4_channel_attrs bc_attrs; /* Back Channel */ }; struct nfs41_reclaim_complete_args { struct nfs4_sequence_args seq_args; /* In the future extend to include curr_fh for use with migration */ unsigned char one_fs:1; }; struct nfs41_reclaim_complete_res { struct nfs4_sequence_res seq_res; }; #define SECINFO_STYLE_CURRENT_FH 0 #define SECINFO_STYLE_PARENT 1 struct nfs41_secinfo_no_name_args { struct nfs4_sequence_args seq_args; int style; }; struct nfs41_test_stateid_args { struct nfs4_sequence_args seq_args; nfs4_stateid *stateid; }; struct nfs41_test_stateid_res { struct nfs4_sequence_res seq_res; unsigned int status; }; struct nfs41_free_stateid_args { struct nfs4_sequence_args seq_args; nfs4_stateid stateid; }; struct nfs41_free_stateid_res { struct nfs4_sequence_res seq_res; unsigned int status; }; #else struct pnfs_ds_commit_info { }; #endif /* CONFIG_NFS_V4_1 */ #ifdef CONFIG_NFS_V4_2 struct nfs42_falloc_args { struct nfs4_sequence_args seq_args; struct nfs_fh *falloc_fh; nfs4_stateid falloc_stateid; u64 falloc_offset; u64 falloc_length; const u32 *falloc_bitmask; }; struct nfs42_falloc_res { struct nfs4_sequence_res seq_res; unsigned int status; struct nfs_fattr *falloc_fattr; const struct nfs_server *falloc_server; }; struct nfs42_copy_args { struct nfs4_sequence_args seq_args; struct nfs_fh *src_fh; nfs4_stateid src_stateid; u64 src_pos; struct nfs_fh *dst_fh; nfs4_stateid dst_stateid; u64 dst_pos; u64 count; bool sync; struct nl4_server *cp_src; }; struct nfs42_write_res { nfs4_stateid stateid; u64 count; struct nfs_writeverf verifier; }; struct nfs42_copy_res { struct nfs4_sequence_res seq_res; struct nfs42_write_res write_res; bool consecutive; bool synchronous; struct nfs_commitres commit_res; }; struct nfs42_offload_status_args { struct nfs4_sequence_args osa_seq_args; struct nfs_fh *osa_src_fh; nfs4_stateid osa_stateid; }; struct nfs42_offload_status_res { struct nfs4_sequence_res osr_seq_res; uint64_t osr_count; int osr_status; }; struct nfs42_copy_notify_args { struct nfs4_sequence_args cna_seq_args; struct nfs_fh *cna_src_fh; nfs4_stateid cna_src_stateid; struct nl4_server cna_dst; }; struct nfs42_copy_notify_res { struct nfs4_sequence_res cnr_seq_res; struct nfstime4 cnr_lease_time; nfs4_stateid cnr_stateid; struct nl4_server cnr_src; }; struct nfs42_seek_args { struct nfs4_sequence_args seq_args; struct nfs_fh *sa_fh; nfs4_stateid sa_stateid; u64 sa_offset; u32 sa_what; }; struct nfs42_seek_res { struct nfs4_sequence_res seq_res; unsigned int status; u32 sr_eof; u64 sr_offset; }; struct nfs42_setxattrargs { struct nfs4_sequence_args seq_args; struct nfs_fh *fh; const u32 *bitmask; const char *xattr_name; u32 xattr_flags; size_t xattr_len; struct page **xattr_pages; }; struct nfs42_setxattrres { struct nfs4_sequence_res seq_res; struct nfs4_change_info cinfo; struct nfs_fattr *fattr; const struct nfs_server *server; }; struct nfs42_getxattrargs { struct nfs4_sequence_args seq_args; struct nfs_fh *fh; const char *xattr_name; size_t xattr_len; struct page **xattr_pages; }; struct nfs42_getxattrres { struct nfs4_sequence_res seq_res; size_t xattr_len; }; struct nfs42_listxattrsargs { struct nfs4_sequence_args seq_args; struct nfs_fh *fh; u32 count; u64 cookie; struct page **xattr_pages; }; struct nfs42_listxattrsres { struct nfs4_sequence_res seq_res; struct page *scratch; void *xattr_buf; size_t xattr_len; u64 cookie; bool eof; size_t copied; }; struct nfs42_removexattrargs { struct nfs4_sequence_args seq_args; struct nfs_fh *fh; const char *xattr_name; }; struct nfs42_removexattrres { struct nfs4_sequence_res seq_res; struct nfs4_change_info cinfo; }; #endif /* CONFIG_NFS_V4_2 */ struct nfs_page; #define NFS_PAGEVEC_SIZE (8U) struct nfs_page_array { struct page **pagevec; unsigned int npages; /* Max length of pagevec */ struct page *page_array[NFS_PAGEVEC_SIZE]; }; /* used as flag bits in nfs_pgio_header */ enum { NFS_IOHDR_ERROR = 0, NFS_IOHDR_EOF, NFS_IOHDR_REDO, NFS_IOHDR_STAT, NFS_IOHDR_RESEND_PNFS, NFS_IOHDR_RESEND_MDS, NFS_IOHDR_UNSTABLE_WRITES, }; struct nfs_io_completion; struct nfs_pgio_header { struct inode *inode; const struct cred *cred; struct list_head pages; struct nfs_page *req; struct nfs_writeverf verf; /* Used for writes */ fmode_t rw_mode; struct pnfs_layout_segment *lseg; loff_t io_start; const struct rpc_call_ops *mds_ops; void (*release) (struct nfs_pgio_header *hdr); const struct nfs_pgio_completion_ops *completion_ops; const struct nfs_rw_ops *rw_ops; struct nfs_io_completion *io_completion; struct nfs_direct_req *dreq; #ifdef CONFIG_NFS_FSCACHE void *netfs; #endif int pnfs_error; int error; /* merge with pnfs_error */ unsigned int good_bytes; /* boundary of good data */ unsigned long flags; /* * rpc data */ struct rpc_task task; struct nfs_fattr fattr; struct nfs_pgio_args args; /* argument struct */ struct nfs_pgio_res res; /* result struct */ unsigned long timestamp; /* For lease renewal */ int (*pgio_done_cb)(struct rpc_task *, struct nfs_pgio_header *); __u64 mds_offset; /* Filelayout dense stripe */ struct nfs_page_array page_array; struct nfs_client *ds_clp; /* pNFS data server */ u32 ds_commit_idx; /* ds index if ds_clp is set */ u32 pgio_mirror_idx;/* mirror index in pgio layer */ }; struct nfs_mds_commit_info { atomic_t rpcs_out; atomic_long_t ncommit; struct list_head list; }; struct nfs_commit_info; struct nfs_commit_data; struct nfs_inode; struct nfs_commit_completion_ops { void (*completion) (struct nfs_commit_data *data); void (*resched_write) (struct nfs_commit_info *, struct nfs_page *); }; struct nfs_commit_info { struct inode *inode; /* Needed for inode->i_lock */ struct nfs_mds_commit_info *mds; struct pnfs_ds_commit_info *ds; struct nfs_direct_req *dreq; /* O_DIRECT request */ const struct nfs_commit_completion_ops *completion_ops; }; struct nfs_commit_data { struct rpc_task task; struct inode *inode; const struct cred *cred; struct nfs_fattr fattr; struct nfs_writeverf verf; struct list_head pages; /* Coalesced requests we wish to flush */ struct list_head list; /* lists of struct nfs_write_data */ struct nfs_direct_req *dreq; /* O_DIRECT request */ struct nfs_commitargs args; /* argument struct */ struct nfs_commitres res; /* result struct */ struct nfs_open_context *context; struct pnfs_layout_segment *lseg; struct nfs_client *ds_clp; /* pNFS data server */ int ds_commit_index; loff_t lwb; const struct rpc_call_ops *mds_ops; const struct nfs_commit_completion_ops *completion_ops; int (*commit_done_cb) (struct rpc_task *task, struct nfs_commit_data *data); unsigned long flags; }; struct nfs_pgio_completion_ops { void (*error_cleanup)(struct list_head *head, int); void (*init_hdr)(struct nfs_pgio_header *hdr); void (*completion)(struct nfs_pgio_header *hdr); void (*reschedule_io)(struct nfs_pgio_header *hdr); }; struct nfs_unlinkdata { struct nfs_removeargs args; struct nfs_removeres res; struct dentry *dentry; wait_queue_head_t wq; const struct cred *cred; struct nfs_fattr dir_attr; long timeout; }; struct nfs_renamedata { struct nfs_renameargs args; struct nfs_renameres res; struct rpc_task task; const struct cred *cred; struct inode *old_dir; struct dentry *old_dentry; struct nfs_fattr old_fattr; struct inode *new_dir; struct dentry *new_dentry; struct nfs_fattr new_fattr; void (*complete)(struct rpc_task *, struct nfs_renamedata *); long timeout; bool cancelled; }; struct nfs_access_entry; struct nfs_client; struct rpc_timeout; struct nfs_subversion; struct nfs_mount_info; struct nfs_client_initdata; struct nfs_pageio_descriptor; struct fs_context; /* * RPC procedure vector for NFSv2/NFSv3 demuxing */ struct nfs_rpc_ops { u32 version; /* Protocol version */ const struct dentry_operations *dentry_ops; const struct inode_operations *dir_inode_ops; const struct inode_operations *file_inode_ops; const struct file_operations *file_ops; const struct nlmclnt_operations *nlmclnt_ops; int (*getroot) (struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); int (*submount) (struct fs_context *, struct nfs_server *); int (*try_get_tree) (struct fs_context *); int (*getattr) (struct nfs_server *, struct nfs_fh *, struct nfs_fattr *, struct inode *); int (*setattr) (struct dentry *, struct nfs_fattr *, struct iattr *); int (*lookup) (struct inode *, struct dentry *, struct nfs_fh *, struct nfs_fattr *); int (*lookupp) (struct inode *, struct nfs_fh *, struct nfs_fattr *); int (*access) (struct inode *, struct nfs_access_entry *, const struct cred *); int (*readlink)(struct inode *, struct page *, unsigned int, unsigned int); int (*create) (struct inode *, struct dentry *, struct iattr *, int); int (*remove) (struct inode *, struct dentry *); void (*unlink_setup) (struct rpc_message *, struct dentry *, struct inode *); void (*unlink_rpc_prepare) (struct rpc_task *, struct nfs_unlinkdata *); int (*unlink_done) (struct rpc_task *, struct inode *); void (*rename_setup) (struct rpc_message *msg, struct dentry *old_dentry, struct dentry *new_dentry); void (*rename_rpc_prepare)(struct rpc_task *task, struct nfs_renamedata *); int (*rename_done) (struct rpc_task *task, struct inode *old_dir, struct inode *new_dir); int (*link) (struct inode *, struct inode *, const struct qstr *); int (*symlink) (struct inode *, struct dentry *, struct folio *, unsigned int, struct iattr *); int (*mkdir) (struct inode *, struct dentry *, struct iattr *); int (*rmdir) (struct inode *, const struct qstr *); int (*readdir) (struct nfs_readdir_arg *, struct nfs_readdir_res *); int (*mknod) (struct inode *, struct dentry *, struct iattr *, dev_t); int (*statfs) (struct nfs_server *, struct nfs_fh *, struct nfs_fsstat *); int (*fsinfo) (struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); int (*pathconf) (struct nfs_server *, struct nfs_fh *, struct nfs_pathconf *); int (*set_capabilities)(struct nfs_server *, struct nfs_fh *); int (*decode_dirent)(struct xdr_stream *, struct nfs_entry *, bool); int (*pgio_rpc_prepare)(struct rpc_task *, struct nfs_pgio_header *); void (*read_setup)(struct nfs_pgio_header *, struct rpc_message *); int (*read_done)(struct rpc_task *, struct nfs_pgio_header *); void (*write_setup)(struct nfs_pgio_header *, struct rpc_message *, struct rpc_clnt **); int (*write_done)(struct rpc_task *, struct nfs_pgio_header *); void (*commit_setup) (struct nfs_commit_data *, struct rpc_message *, struct rpc_clnt **); void (*commit_rpc_prepare)(struct rpc_task *, struct nfs_commit_data *); int (*commit_done) (struct rpc_task *, struct nfs_commit_data *); int (*lock)(struct file *, int, struct file_lock *); int (*lock_check_bounds)(const struct file_lock *); void (*clear_acl_cache)(struct inode *); void (*close_context)(struct nfs_open_context *ctx, int); struct inode * (*open_context) (struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *iattr, int *); int (*have_delegation)(struct inode *, fmode_t); struct nfs_client *(*alloc_client) (const struct nfs_client_initdata *); struct nfs_client *(*init_client) (struct nfs_client *, const struct nfs_client_initdata *); void (*free_client) (struct nfs_client *); struct nfs_server *(*create_server)(struct fs_context *); struct nfs_server *(*clone_server)(struct nfs_server *, struct nfs_fh *, struct nfs_fattr *, rpc_authflavor_t); int (*discover_trunking)(struct nfs_server *, struct nfs_fh *); void (*enable_swap)(struct inode *inode); void (*disable_swap)(struct inode *inode); }; /* * NFS_CALL(getattr, inode, (fattr)); * into * NFS_PROTO(inode)->getattr(fattr); */ #define NFS_CALL(op, inode, args) NFS_PROTO(inode)->op args /* * Function vectors etc. for the NFS client */ extern const struct nfs_rpc_ops nfs_v2_clientops; extern const struct nfs_rpc_ops nfs_v3_clientops; extern const struct nfs_rpc_ops nfs_v4_clientops; extern const struct rpc_version nfs_version2; extern const struct rpc_version nfs_version3; extern const struct rpc_version nfs_version4; extern const struct rpc_version nfsacl_version3; extern const struct rpc_program nfsacl_program; #endif
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