cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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nfs42.h (2330B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2/*
      3 * Copyright (c) 2014 Anna Schumaker <Anna.Schumaker@Netapp.com>
      4 */
      5
      6#ifndef __LINUX_FS_NFS_NFS4_2_H
      7#define __LINUX_FS_NFS_NFS4_2_H
      8
      9#include <linux/xattr.h>
     10
     11/*
     12 * FIXME:  four LAYOUTSTATS calls per compound at most! Do we need to support
     13 * more? Need to consider not to pre-alloc too much for a compound.
     14 */
     15#define PNFS_LAYOUTSTATS_MAXDEV (4)
     16
     17/* nfs4.2proc.c */
     18#ifdef CONFIG_NFS_V4_2
     19int nfs42_proc_allocate(struct file *, loff_t, loff_t);
     20ssize_t nfs42_proc_copy(struct file *, loff_t, struct file *, loff_t, size_t,
     21			struct nl4_server *, nfs4_stateid *, bool);
     22int nfs42_proc_deallocate(struct file *, loff_t, loff_t);
     23loff_t nfs42_proc_llseek(struct file *, loff_t, int);
     24int nfs42_proc_layoutstats_generic(struct nfs_server *,
     25				   struct nfs42_layoutstat_data *);
     26int nfs42_proc_clone(struct file *, struct file *, loff_t, loff_t, loff_t);
     27int nfs42_proc_layouterror(struct pnfs_layout_segment *lseg,
     28			   const struct nfs42_layout_error *errors,
     29			   size_t n);
     30int nfs42_proc_copy_notify(struct file *, struct file *,
     31			   struct nfs42_copy_notify_res *);
     32static inline bool nfs42_files_from_same_server(struct file *in,
     33						struct file *out)
     34{
     35	struct nfs_client *c_in = (NFS_SERVER(file_inode(in)))->nfs_client;
     36	struct nfs_client *c_out = (NFS_SERVER(file_inode(out)))->nfs_client;
     37
     38	return nfs4_check_serverowner_major_id(c_in->cl_serverowner,
     39					       c_out->cl_serverowner);
     40}
     41
     42ssize_t nfs42_proc_getxattr(struct inode *inode, const char *name,
     43			    void *buf, size_t buflen);
     44int nfs42_proc_setxattr(struct inode *inode, const char *name,
     45			const void *buf, size_t buflen, int flags);
     46ssize_t nfs42_proc_listxattrs(struct inode *inode, void *buf,
     47			       size_t buflen, u64 *cookiep, bool *eofp);
     48int nfs42_proc_removexattr(struct inode *inode, const char *name);
     49
     50/*
     51 * Maximum XDR buffer size needed for a listxattr buffer of buflen size.
     52 *
     53 * The upper boundary is a buffer with all 1-byte sized attribute names.
     54 * They would be 7 bytes long in the eventual buffer ("user.x\0"), and
     55 * 8 bytes long XDR-encoded.
     56 *
     57 * Include the trailing eof word as well.
     58 */
     59static inline u32 nfs42_listxattr_xdrsize(u32 buflen)
     60{
     61	return ((buflen / (XATTR_USER_PREFIX_LEN + 2)) * 8) + 4;
     62}
     63#endif /* CONFIG_NFS_V4_2 */
     64#endif /* __LINUX_FS_NFS_NFS4_2_H */