/* 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 )
#define READ_PLUS_SCRATCH_SIZE (16 )
/* 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);
int nfs42_proc_zero_range(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 and make the result a multiple
* of 4 bytes .
*/
static inline u32 nfs42_listxattr_xdrsize(u32 buflen)
{
u32 size = 8 * buflen / (XATTR_USER_PREFIX_LEN + 2 ) + 4 ;
return (size + 3 ) & ~3 ;
}
#endif /* CONFIG_NFS_V4_2 */
#endif /* __LINUX_FS_NFS_NFS4_2_H */
Messung V0.5 in Prozent C=91 H=100 G=95
¤ Dauer der Verarbeitung: 0.10 Sekunden
(vorverarbeitet am 2026-09-29)
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