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47 lines
1.1 KiB
47 lines
1.1 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* NFS protocol definitions |
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* |
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* This file contains constants mostly for Version 2 of the protocol, |
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* but also has a couple of NFSv3 bits in (notably the error codes). |
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*/ |
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#ifndef _LINUX_NFS_H |
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#define _LINUX_NFS_H |
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#include <linux/sunrpc/msg_prot.h> |
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#include <linux/string.h> |
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#include <uapi/linux/nfs.h> |
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/* |
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* This is the kernel NFS client file handle representation |
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*/ |
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#define NFS_MAXFHSIZE 128 |
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struct nfs_fh { |
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unsigned short size; |
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unsigned char data[NFS_MAXFHSIZE]; |
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}; |
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/* |
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* Returns a zero iff the size and data fields match. |
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* Checks only "size" bytes in the data field. |
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*/ |
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static inline int nfs_compare_fh(const struct nfs_fh *a, const struct nfs_fh *b) |
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{ |
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return a->size != b->size || memcmp(a->data, b->data, a->size) != 0; |
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} |
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static inline void nfs_copy_fh(struct nfs_fh *target, const struct nfs_fh *source) |
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{ |
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target->size = source->size; |
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memcpy(target->data, source->data, source->size); |
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} |
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enum nfs3_stable_how { |
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NFS_UNSTABLE = 0, |
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NFS_DATA_SYNC = 1, |
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NFS_FILE_SYNC = 2, |
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/* used by direct.c to mark verf as invalid */ |
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NFS_INVALID_STABLE_HOW = -1 |
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}; |
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#endif /* _LINUX_NFS_H */
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