Contributors: 6
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Trond Myklebust |
140 |
66.35% |
4 |
28.57% |
| Linus Torvalds (pre-git) |
52 |
24.64% |
5 |
35.71% |
| Weston Andros Adamson |
9 |
4.27% |
2 |
14.29% |
| Jeff Layton |
6 |
2.84% |
1 |
7.14% |
| David Howells |
3 |
1.42% |
1 |
7.14% |
| Greg Kroah-Hartman |
1 |
0.47% |
1 |
7.14% |
| Total |
211 |
|
14 |
|
/* SPDX-License-Identifier: GPL-2.0 */
/*
* NFS protocol definitions
*
* This file contains constants mostly for Version 2 of the protocol,
* but also has a couple of NFSv3 bits in (notably the error codes).
*/
#ifndef _LINUX_NFS_H
#define _LINUX_NFS_H
#include <linux/sunrpc/msg_prot.h>
#include <linux/string.h>
#include <linux/crc32.h>
#include <uapi/linux/nfs.h>
/*
* This is the kernel NFS client file handle representation
*/
#define NFS_MAXFHSIZE 128
struct nfs_fh {
unsigned short size;
unsigned char data[NFS_MAXFHSIZE];
};
/*
* Returns a zero iff the size and data fields match.
* Checks only "size" bytes in the data field.
*/
static inline int nfs_compare_fh(const struct nfs_fh *a, const struct nfs_fh *b)
{
return a->size != b->size || memcmp(a->data, b->data, a->size) != 0;
}
static inline void nfs_copy_fh(struct nfs_fh *target, const struct nfs_fh *source)
{
target->size = source->size;
memcpy(target->data, source->data, source->size);
}
enum nfs3_stable_how {
NFS_UNSTABLE = 0,
NFS_DATA_SYNC = 1,
NFS_FILE_SYNC = 2,
/* used by direct.c to mark verf as invalid */
NFS_INVALID_STABLE_HOW = -1
};
#ifdef CONFIG_CRC32
/**
* nfs_fhandle_hash - calculate the crc32 hash for the filehandle
* @fh - pointer to filehandle
*
* returns a crc32 hash for the filehandle that is compatible with
* the one displayed by "wireshark".
*/
static inline u32 nfs_fhandle_hash(const struct nfs_fh *fh)
{
return ~crc32_le(0xFFFFFFFF, &fh->data[0], fh->size);
}
#else /* CONFIG_CRC32 */
static inline u32 nfs_fhandle_hash(const struct nfs_fh *fh)
{
return 0;
}
#endif /* CONFIG_CRC32 */
#endif /* _LINUX_NFS_H */