forked from luck/tmp_suning_uos_patched
607ca46e97
Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Michael Kerrisk <mtk.manpages@gmail.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Dave Jones <davej@redhat.com>
52 lines
1.2 KiB
C
52 lines
1.2 KiB
C
/*
|
|
* 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 <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);
|
|
}
|
|
|
|
|
|
/*
|
|
* This is really a general kernel constant, but since nothing like
|
|
* this is defined in the kernel headers, I have to do it here.
|
|
*/
|
|
#define NFS_OFFSET_MAX ((__s64)((~(__u64)0) >> 1))
|
|
|
|
|
|
enum nfs3_stable_how {
|
|
NFS_UNSTABLE = 0,
|
|
NFS_DATA_SYNC = 1,
|
|
NFS_FILE_SYNC = 2
|
|
};
|
|
#endif /* _LINUX_NFS_H */
|