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#ifndef _LINUX_NFS_XDR_H
#define _LINUX_NFS_XDR_H
#include <linux/nfsacl.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)
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 nfs_fattr {
unsigned short valid; /* which fields are valid */
__u64 pre_size; /* pre_op_attr.size */
struct timespec pre_mtime; /* pre_op_attr.mtime */
struct timespec pre_ctime; /* pre_op_attr.ctime */
enum nfs_ftype type; /* always use NFSv2 types */
__u32 mode;
__u32 nlink;
__u32 uid;
__u32 gid;
__u64 size;
union {
struct {
__u32 blocksize;
__u32 blocks;
} nfs2;
struct {
__u64 used;
} nfs3;
} du;
dev_t rdev;
struct nfs_fsid fsid;
__u64 fileid;
struct timespec atime;
struct timespec mtime;
struct timespec ctime;
__u32 bitmap[2]; /* NFSv4 returned attribute bitmap */
__u64 change_attr; /* NFSv4 change attribute */
__u64 pre_change_attr;/* pre-op NFSv4 change attribute */
unsigned long time_start;
};
#define NFS_ATTR_WCC 0x0001 /* pre-op WCC data */
#define NFS_ATTR_FATTR 0x0002 /* post-op attributes */
#define NFS_ATTR_FATTR_V3 0x0004 /* NFSv3 attributes */
#define NFS_ATTR_FATTR_V4 0x0008 /* NFSv4 change attribute */
#define NFS_ATTR_WCC_V4 0x0010 /* pre-op change attribute */
#define NFS_ATTR_FATTR_V4_REFERRAL 0x0020 /* NFSv4 referral */
/*
* 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;
__u32 lease_time; /* in seconds */
};
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;
/*
* Arguments to the open call.
*/
struct nfs_openargs {
const struct nfs_fh * fh;
struct nfs_seqid * seqid;
int open_flags;
__u64 clientid;
__u64 id;
union {
struct iattr * attrs; /* UNCHECKED, GUARDED */
nfs4_verifier verifier; /* EXCLUSIVE */
nfs4_stateid delegation; /* CLAIM_DELEGATE_CUR */
int delegation_type; /* CLAIM_PREVIOUS */
} u;
const struct qstr * name;
const struct nfs_server *server; /* Needed for ID mapping */
const u32 * bitmask;
__u32 claim;
};
struct nfs_openres {
nfs4_stateid stateid;
struct nfs_fh fh;
struct nfs4_change_info cinfo;
__u32 rflags;
struct nfs_fattr * f_attr;
struct nfs_fattr * dir_attr;
const struct nfs_server *server;
int delegation_type;
nfs4_stateid delegation;
__u32 do_recall;
__u64 maxsize;
__u32 attrset[NFS4_BITMAP_SIZE];
};
/*
* Arguments to the open_confirm call.
*/
struct nfs_open_confirmargs {
const struct nfs_fh * fh;
nfs4_stateid * stateid;
struct nfs_seqid * seqid;
};
struct nfs_open_confirmres {
nfs4_stateid stateid;
};
/*
* Arguments to the close call.
*/
struct nfs_closeargs {
struct nfs_fh * fh;
nfs4_stateid * stateid;
struct nfs_seqid * seqid;
int open_flags;
const u32 * bitmask;
};
struct nfs_closeres {
nfs4_stateid stateid;
struct nfs_fattr * fattr;
const struct nfs_server *server;
};
/*
* * Arguments to the lock,lockt, and locku call.
* */
struct nfs_lowner {
__u64 clientid;
__u64 id;
};
struct nfs_lock_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_owner : 1;
};
struct nfs_lock_res {
nfs4_stateid stateid;
};
struct nfs_locku_args {
struct nfs_fh * fh;
struct file_lock * fl;
struct nfs_seqid * seqid;
nfs4_stateid * stateid;
};
struct nfs_locku_res {
nfs4_stateid stateid;
};
struct nfs_lockt_args {
struct nfs_fh * fh;
struct file_lock * fl;
struct nfs_lowner lock_owner;
};
struct nfs_lockt_res {
struct file_lock * denied; /* LOCK, LOCKT failed */
};
struct nfs4_delegreturnargs {
const struct nfs_fh *fhandle;
const nfs4_stateid *stateid;
const u32 * bitmask;
};
struct nfs4_delegreturnres {
struct nfs_fattr * fattr;
const struct nfs_server *server;
};
/*
* Arguments to the read call.
*/
struct nfs_readargs {
struct nfs_fh * fh;
struct nfs_open_context *context;
__u64 offset;
__u32 count;
unsigned int pgbase;
struct page ** pages;
};
struct nfs_readres {
struct nfs_fattr * fattr;
__u32 count;
int eof;
};
/*
* Arguments to the write call.
*/
struct nfs_writeargs {
struct nfs_fh * fh;
struct nfs_open_context *context;
__u64 offset;
__u32 count;
enum nfs3_stable_how stable;
unsigned int pgbase;
struct page ** pages;
const u32 * bitmask;
};
struct nfs_writeverf {
enum nfs3_stable_how committed;
__be32 verifier[2];
};
struct nfs_writeres {
struct nfs_fattr * fattr;
struct nfs_writeverf * verf;
__u32 count;
const struct nfs_server *server;
};
/*
* Common arguments to the unlink call
*/
struct nfs_removeargs {
const struct nfs_fh *fh;
struct qstr name;
const u32 * bitmask;
};
struct nfs_removeres {
const struct nfs_server *server;
struct nfs4_change_info cinfo;
struct nfs_fattr dir_attr;
};
/*
* Argument struct for decode_entry function
*/
struct nfs_entry {
__u64 ino;
__u64 cookie,
prev_cookie;
const char * name;
unsigned int len;
int eof;
struct nfs_fh * fh;
struct nfs_fattr * fattr;
};
/*
* 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_renameargs {
struct nfs_fh * fromfh;
const char * fromname;
unsigned int fromlen;
struct nfs_fh * tofh;
const char * toname;
unsigned int tolen;
};
struct nfs_setattrargs {
struct nfs_fh * fh;
nfs4_stateid stateid;
struct iattr * iap;
const struct nfs_server * server; /* Needed for name mapping */
const u32 * bitmask;
};
struct nfs_setaclargs {
struct nfs_fh * fh;
size_t acl_len;
unsigned int acl_pgbase;
struct page ** acl_pages;
};
struct nfs_getaclargs {
struct nfs_fh * fh;
size_t acl_len;
unsigned int acl_pgbase;
struct page ** acl_pages;
};
struct nfs_setattrres {
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;
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 timespec 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_renameargs {
struct nfs_fh * fromfh;
const char * fromname;
unsigned int fromlen;
struct nfs_fh * tofh;
const char * toname;
unsigned int tolen;
};
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];
int 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_renameres {
struct nfs_fattr * fromattr;
struct nfs_fattr * toattr;
};
struct nfs3_linkres {
struct nfs_fattr * dir_attr;
struct nfs_fattr * fattr;
};
struct nfs3_readdirres {
struct nfs_fattr * dir_attr;
__be32 * verf;
int 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;
};
#ifdef CONFIG_NFS_V4
typedef u64 clientid4;
struct nfs4_accessargs {
const struct nfs_fh * fh;
const u32 * bitmask;
u32 access;
};
struct nfs4_accessres {
const struct nfs_server * server;
struct nfs_fattr * fattr;
u32 supported;
u32 access;
};
struct nfs4_create_arg {
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;
};
struct nfs4_create_res {
const struct nfs_server * server;
struct nfs_fh * fh;
struct nfs_fattr * fattr;
struct nfs4_change_info dir_cinfo;
struct nfs_fattr * dir_fattr;
};
struct nfs4_fsinfo_arg {
const struct nfs_fh * fh;
const u32 * bitmask;
};
struct nfs4_getattr_arg {
const struct nfs_fh * fh;
const u32 * bitmask;
};
struct nfs4_getattr_res {
const struct nfs_server * server;
struct nfs_fattr * fattr;
};
struct nfs4_link_arg {
const struct nfs_fh * fh;
const struct nfs_fh * dir_fh;
const struct qstr * name;
const u32 * bitmask;
};
struct nfs4_link_res {
const struct nfs_server * server;
struct nfs_fattr * fattr;
struct nfs4_change_info cinfo;
struct nfs_fattr * dir_attr;
};
struct nfs4_lookup_arg {
const struct nfs_fh * dir_fh;
const struct qstr * name;
const u32 * bitmask;
};
struct nfs4_lookup_res {
const struct nfs_server * server;
struct nfs_fattr * fattr;
struct nfs_fh * fh;
};
struct nfs4_lookup_root_arg {
const u32 * bitmask;
};
struct nfs4_pathconf_arg {
const struct nfs_fh * fh;
const u32 * bitmask;
};
struct nfs4_readdir_arg {
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;
};
struct nfs4_readdir_res {
nfs4_verifier verifier;
unsigned int pgbase;
};
struct nfs4_readlink {
const struct nfs_fh * fh;
unsigned int pgbase;
unsigned int pglen; /* zero-copy data */
struct page ** pages; /* zero-copy data */
};
struct nfs4_rename_arg {
const struct nfs_fh * old_dir;
const struct nfs_fh * new_dir;
const struct qstr * old_name;
const struct qstr * new_name;
const u32 * bitmask;
};
struct nfs4_rename_res {
const 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;
};
struct nfs4_setclientid {
const nfs4_verifier * sc_verifier; /* request */
unsigned int sc_name_len;
char sc_name[48]; /* request */
u32 sc_prog; /* request */
unsigned int sc_netid_len;
char sc_netid[4]; /* request */
unsigned int sc_uaddr_len;
char sc_uaddr[24]; /* request */
u32 sc_cb_ident; /* request */
};
struct nfs4_statfs_arg {
const struct nfs_fh * fh;
const u32 * bitmask;
};
struct nfs4_server_caps_res {
u32 attr_bitmask[2];
u32 acl_bitmask;
u32 has_links;
u32 has_symlinks;
};
struct nfs4_string {
unsigned int len;
char *data;
};
#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 {
const struct nfs_fh *dir_fh;
const struct qstr *name;
struct page *page;
const u32 *bitmask;
};
#endif /* CONFIG_NFS_V4 */
struct nfs_page;
#define NFS_PAGEVEC_SIZE (8U)
struct nfs_read_data {
int flags;
struct rpc_task task;
struct inode *inode;
struct rpc_cred *cred;
struct nfs_fattr fattr; /* fattr storage */
struct list_head pages; /* Coalesced read requests */
struct nfs_page *req; /* multi ops per nfs_page */
struct page **pagevec;
unsigned int npages; /* Max length of pagevec */
struct nfs_readargs args;
struct nfs_readres res;
#ifdef CONFIG_NFS_V4
unsigned long timestamp; /* For lease renewal */
#endif
struct page *page_array[NFS_PAGEVEC_SIZE];
};
struct nfs_write_data {
int flags;
struct rpc_task task;
struct inode *inode;
struct rpc_cred *cred;
struct nfs_fattr fattr;
struct nfs_writeverf verf;
struct list_head pages; /* Coalesced requests we wish to flush */
struct nfs_page *req; /* multi ops per nfs_page */
struct page **pagevec;
unsigned int npages; /* Max length of pagevec */
struct nfs_writeargs args; /* argument struct */
struct nfs_writeres res; /* result struct */
#ifdef CONFIG_NFS_V4
unsigned long timestamp; /* For lease renewal */
#endif
struct page *page_array[NFS_PAGEVEC_SIZE];
};
struct nfs_access_entry;
/*
* RPC procedure vector for NFSv2/NFSv3 demuxing
*/
struct nfs_rpc_ops {
int version; /* Protocol version */
struct dentry_operations *dentry_ops;
const struct inode_operations *dir_inode_ops;
const struct inode_operations *file_inode_ops;
int (*getroot) (struct nfs_server *, struct nfs_fh *,
struct nfs_fsinfo *);
int (*lookupfh)(struct nfs_server *, struct nfs_fh *,
struct qstr *, struct nfs_fh *,
struct nfs_fattr *);
int (*getattr) (struct nfs_server *, struct nfs_fh *,
struct nfs_fattr *);
int (*setattr) (struct dentry *, struct nfs_fattr *,
struct iattr *);
int (*lookup) (struct inode *, struct qstr *,
struct nfs_fh *, struct nfs_fattr *);
int (*access) (struct inode *, struct nfs_access_entry *);
int (*readlink)(struct inode *, struct page *, unsigned int,
unsigned int);
int (*create) (struct inode *, struct dentry *,
struct iattr *, int, struct nameidata *);
int (*remove) (struct inode *, struct qstr *);
void (*unlink_setup) (struct rpc_message *, struct inode *dir);
int (*unlink_done) (struct rpc_task *, struct inode *);
int (*rename) (struct inode *, struct qstr *,
struct inode *, struct qstr *);
int (*link) (struct inode *, struct inode *, struct qstr *);
int (*symlink) (struct inode *, struct dentry *, struct page *,
unsigned int, struct iattr *);
int (*mkdir) (struct inode *, struct dentry *, struct iattr *);
int (*rmdir) (struct inode *, struct qstr *);
int (*readdir) (struct dentry *, struct rpc_cred *,
u64, struct page *, unsigned int, int);
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 *);
__be32 *(*decode_dirent)(__be32 *, struct nfs_entry *, int plus);
void (*read_setup) (struct nfs_read_data *);
int (*read_done) (struct rpc_task *, struct nfs_read_data *);
void (*write_setup) (struct nfs_write_data *, int how);
int (*write_done) (struct rpc_task *, struct nfs_write_data *);
void (*commit_setup) (struct nfs_write_data *, int how);
int (*commit_done) (struct rpc_task *, struct nfs_write_data *);
int (*file_open) (struct inode *, struct file *);
int (*file_release) (struct inode *, struct file *);
int (*lock)(struct file *, int, struct file_lock *);
void (*clear_acl_cache)(struct 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 struct rpc_version nfs_version2;
extern struct rpc_version nfs_version3;
extern struct rpc_version nfs_version4;
extern struct rpc_version nfsacl_version3;
extern struct rpc_program nfsacl_program;
#endif
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