2 * Copyright (c) 2004 The DragonFly Project. All rights reserved.
4 * This code is derived from software contributed to The DragonFly Project
5 * by Matthew Dillon <dillon@backplane.com>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
17 * 3. Neither the name of The DragonFly Project nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific, prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * $DragonFly: src/sys/sys/nlookup.h,v 1.2 2004/09/30 18:59:50 dillon Exp $
37 #ifndef _SYS_NLOOKUP_H_
38 #define _SYS_NLOOKUP_H_
55 * Encapsulation of nlookup parameters.
57 * Note on nl_flags and nl_op: nl_flags supports a simplified subset of
58 * namei's original CNP flags. nl_op (e.g. NAMEI_*) does no in any way
59 * effect the state of the returned namecache and is only used to enforce
63 struct namecache *nl_ncp; /* start-point and result */
64 struct namecache *nl_rootncp; /* root directory */
65 struct namecache *nl_jailncp; /* jail directory */
67 char *nl_path; /* path buffer */
68 struct thread *nl_td; /* thread requesting the nlookup */
69 struct ucred *nl_cred; /* credentials for nlookup */
71 int nl_flags; /* operations flags */
72 int nl_loopcnt; /* symlinks encountered */
75 #define NLC_FOLLOW 0x00000001 /* follow leaf symlink */
76 #define NLC_NOCROSSMOUNT 0x00000002 /* do not cross mount points */
77 #define NLC_HASBUF 0x00000004 /* nl_path is allocated */
78 #define NLC_ISWHITEOUT 0x00000008
79 #define NLC_WILLBEDIR 0x00000010
80 #define NLC_NCPISLOCKED 0x00000020
84 int nlookup_init(struct nlookupdata *, const char *, enum uio_seg, int);
85 void nlookup_done(struct nlookupdata *);
86 struct namecache *nlookup_simple(const char *str, enum uio_seg seg,
87 int niflags, int *error);
88 int nlookup_mp(struct mount *mp, struct namecache **ncpp);
89 int nlookup(struct nlookupdata *);
90 int nreadsymlink(struct nlookupdata *nd, struct namecache *ncp,
91 struct nlcomponent *nlc);
92 int naccess(struct namecache *ncp, int vmode, struct ucred *cred);
93 int naccess_va(struct vattr *va, int vmode, struct ucred *cred);
97 #endif /* !_SYS_NAMEI_H_ */