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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364/* SPDX-License-Identifier: GPL-2.0 *//* * struct nfs_fh is an NFS version-agnostic data structure that * stores an NFS file handle. It is also commonly used in NFS * related APIs. */#ifndef _LINUX_NFS_FH_H#define _LINUX_NFS_FH_H
#include <linux/types.h>#include <linux/string.h>#include <linux/crc32.h>
/* * The largest file handle size today is an NFSv4 file handle, * which can be up to 128 octets long. */#define NFS_MAXFHSIZE 128struct nfs_fh { unsigned short size; unsigned char data[NFS_MAXFHSIZE];};
/** * nfs_compare_fh - Compare two NFS file handles * @a: An NFS file handle to be compared * @b: An NFS file handle to be compared * * Checks only "size" bytes in each data field. * * Return: %false if the two file handles are equal, otherwise %true */static inline bool 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;}
/** * nfs_copy_fh - Copy an NFS file handle * @target: Destination file handle * @source: Source file handle * * Copies source->size bytes of file handle data into target. */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);}
/** * nfs_fhandle_hash - Calculate the crc32 hash for the filehandle * @fh: An NFS file handle to hash * * Return: 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);}
#endif /* _LINUX_NFS_FH_H */