12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364 |
- /* SPDX-License-Identifier: GPL-2.0 */
- /*
- * Copyright (c) 2014 Anna Schumaker <Anna.Schumaker@Netapp.com>
- */
- #ifndef __LINUX_FS_NFS_NFS4_2_H
- #define __LINUX_FS_NFS_NFS4_2_H
- #include <linux/xattr.h>
- /*
- * FIXME: four LAYOUTSTATS calls per compound at most! Do we need to support
- * more? Need to consider not to pre-alloc too much for a compound.
- */
- #define PNFS_LAYOUTSTATS_MAXDEV (4)
- /* nfs4.2proc.c */
- #ifdef CONFIG_NFS_V4_2
- int nfs42_proc_allocate(struct file *, loff_t, loff_t);
- ssize_t nfs42_proc_copy(struct file *, loff_t, struct file *, loff_t, size_t,
- struct nl4_server *, nfs4_stateid *, bool);
- int nfs42_proc_deallocate(struct file *, loff_t, loff_t);
- loff_t nfs42_proc_llseek(struct file *, loff_t, int);
- int nfs42_proc_layoutstats_generic(struct nfs_server *,
- struct nfs42_layoutstat_data *);
- int nfs42_proc_clone(struct file *, struct file *, loff_t, loff_t, loff_t);
- int nfs42_proc_layouterror(struct pnfs_layout_segment *lseg,
- const struct nfs42_layout_error *errors,
- size_t n);
- int nfs42_proc_copy_notify(struct file *, struct file *,
- struct nfs42_copy_notify_res *);
- static inline bool nfs42_files_from_same_server(struct file *in,
- struct file *out)
- {
- struct nfs_client *c_in = (NFS_SERVER(file_inode(in)))->nfs_client;
- struct nfs_client *c_out = (NFS_SERVER(file_inode(out)))->nfs_client;
- return nfs4_check_serverowner_major_id(c_in->cl_serverowner,
- c_out->cl_serverowner);
- }
- ssize_t nfs42_proc_getxattr(struct inode *inode, const char *name,
- void *buf, size_t buflen);
- int nfs42_proc_setxattr(struct inode *inode, const char *name,
- const void *buf, size_t buflen, int flags);
- ssize_t nfs42_proc_listxattrs(struct inode *inode, void *buf,
- size_t buflen, u64 *cookiep, bool *eofp);
- int nfs42_proc_removexattr(struct inode *inode, const char *name);
- /*
- * Maximum XDR buffer size needed for a listxattr buffer of buflen size.
- *
- * The upper boundary is a buffer with all 1-byte sized attribute names.
- * They would be 7 bytes long in the eventual buffer ("user.x\0"), and
- * 8 bytes long XDR-encoded.
- *
- * Include the trailing eof word as well.
- */
- static inline u32 nfs42_listxattr_xdrsize(u32 buflen)
- {
- return ((buflen / (XATTR_USER_PREFIX_LEN + 2)) * 8) + 4;
- }
- #endif /* CONFIG_NFS_V4_2 */
- #endif /* __LINUX_FS_NFS_NFS4_2_H */
|