2 .\" Copyright (c) 1999 Robert N. M. Watson
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26 .\" $FreeBSD: src/share/man/man9/VOP_GETEXTATTR.9,v 1.1.2.3 2001/12/17 11:30:18 ru Exp $
27 .\" $DragonFly: src/share/man/man9/VOP_GETEXTATTR.9,v 1.2 2003/06/17 04:37:01 dillon Exp $
34 .Nd retrieve named extended attribute from a vnode
40 .Fn VOP_GETEXTATTR "struct vnode *vp" "char *name" "struct uio *uio" "struct ucred *cred" "struct proc *p"
42 This vnode call may be used to retrieve a specific named extended attribute
43 from a file or directory.
48 the vnode of the file or directory
50 pointer to a null-terminated character string containing the attribute name
52 the location of the data to be read or written
54 the user credentials to use in authorizing the request
56 the process requesting the extended attribute
63 to indicate that access control checks are not to be performed, if possible.
66 setting might be used to allow the kernel to authorize extended attribute
67 retrieval that the active process might not be permitted to do.
69 Extended attribute semantics may vary by file system implementing the call.
70 More information on extended attributes may be found in
73 No locks are required to call this vnode method, and any locks held on
74 entry will be held on exit.
76 On success, zero will be returned, and the uio structure will be updated to
77 reflect data read. Otherwise, an appropriate error code is returned.
81 The attribute name is not defined for this vnode
85 The request was not valid in this file system for the specified vnode and
88 Insufficient memory available to fulfill request
90 The uio structure refers to an invalid userspace address.
98 The file system does not support