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64 lines
2.3 KiB
64 lines
2.3 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* Copyright (c) 2014 Anna Schumaker <[email protected]> |
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*/ |
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#ifndef __LINUX_FS_NFS_NFS4_2_H |
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#define __LINUX_FS_NFS_NFS4_2_H |
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#include <linux/xattr.h> |
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/* |
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* FIXME: four LAYOUTSTATS calls per compound at most! Do we need to support |
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* more? Need to consider not to pre-alloc too much for a compound. |
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*/ |
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#define PNFS_LAYOUTSTATS_MAXDEV (4) |
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/* nfs4.2proc.c */ |
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#ifdef CONFIG_NFS_V4_2 |
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int nfs42_proc_allocate(struct file *, loff_t, loff_t); |
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ssize_t nfs42_proc_copy(struct file *, loff_t, struct file *, loff_t, size_t, |
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struct nl4_server *, nfs4_stateid *, bool); |
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int nfs42_proc_deallocate(struct file *, loff_t, loff_t); |
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loff_t nfs42_proc_llseek(struct file *, loff_t, int); |
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int nfs42_proc_layoutstats_generic(struct nfs_server *, |
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struct nfs42_layoutstat_data *); |
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int nfs42_proc_clone(struct file *, struct file *, loff_t, loff_t, loff_t); |
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int nfs42_proc_layouterror(struct pnfs_layout_segment *lseg, |
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const struct nfs42_layout_error *errors, |
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size_t n); |
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int nfs42_proc_copy_notify(struct file *, struct file *, |
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struct nfs42_copy_notify_res *); |
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static inline bool nfs42_files_from_same_server(struct file *in, |
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struct file *out) |
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{ |
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struct nfs_client *c_in = (NFS_SERVER(file_inode(in)))->nfs_client; |
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struct nfs_client *c_out = (NFS_SERVER(file_inode(out)))->nfs_client; |
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return nfs4_check_serverowner_major_id(c_in->cl_serverowner, |
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c_out->cl_serverowner); |
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} |
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ssize_t nfs42_proc_getxattr(struct inode *inode, const char *name, |
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void *buf, size_t buflen); |
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int nfs42_proc_setxattr(struct inode *inode, const char *name, |
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const void *buf, size_t buflen, int flags); |
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ssize_t nfs42_proc_listxattrs(struct inode *inode, void *buf, |
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size_t buflen, u64 *cookiep, bool *eofp); |
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int nfs42_proc_removexattr(struct inode *inode, const char *name); |
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/* |
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* Maximum XDR buffer size needed for a listxattr buffer of buflen size. |
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* |
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* The upper boundary is a buffer with all 1-byte sized attribute names. |
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* They would be 7 bytes long in the eventual buffer ("user.x\0"), and |
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* 8 bytes long XDR-encoded. |
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* |
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* Include the trailing eof word as well. |
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*/ |
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static inline u32 nfs42_listxattr_xdrsize(u32 buflen) |
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{ |
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return ((buflen / (XATTR_USER_PREFIX_LEN + 2)) * 8) + 4; |
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} |
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#endif /* CONFIG_NFS_V4_2 */ |
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#endif /* __LINUX_FS_NFS_NFS4_2_H */
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