1*8329232eSGordon Ross /*
2*8329232eSGordon Ross * CDDL HEADER START
3*8329232eSGordon Ross *
4*8329232eSGordon Ross * The contents of this file are subject to the terms of the
5*8329232eSGordon Ross * Common Development and Distribution License (the "License").
6*8329232eSGordon Ross * You may not use this file except in compliance with the License.
7*8329232eSGordon Ross *
8*8329232eSGordon Ross * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9*8329232eSGordon Ross * or http://www.opensolaris.org/os/licensing.
10*8329232eSGordon Ross * See the License for the specific language governing permissions
11*8329232eSGordon Ross * and limitations under the License.
12*8329232eSGordon Ross *
13*8329232eSGordon Ross * When distributing Covered Code, include this CDDL HEADER in each
14*8329232eSGordon Ross * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15*8329232eSGordon Ross * If applicable, add the following below this CDDL HEADER, with the
16*8329232eSGordon Ross * fields enclosed by brackets "[]" replaced with your own identifying
17*8329232eSGordon Ross * information: Portions Copyright [yyyy] [name of copyright owner]
18*8329232eSGordon Ross *
19*8329232eSGordon Ross * CDDL HEADER END
20*8329232eSGordon Ross */
21*8329232eSGordon Ross
22*8329232eSGordon Ross /*
23*8329232eSGordon Ross * Copyright (c) 1988, 2010, Oracle and/or its affiliates. All rights reserved.
24*8329232eSGordon Ross * Copyright 2016 Joyent, Inc.
25*8329232eSGordon Ross * Copyright 2017 Nexenta Systems, Inc. All rights reserved.
26*8329232eSGordon Ross */
27*8329232eSGordon Ross
28*8329232eSGordon Ross /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
29*8329232eSGordon Ross /* All Rights Reserved */
30*8329232eSGordon Ross
31*8329232eSGordon Ross /*
32*8329232eSGordon Ross * University Copyright- Copyright (c) 1982, 1986, 1988
33*8329232eSGordon Ross * The Regents of the University of California
34*8329232eSGordon Ross * All Rights Reserved
35*8329232eSGordon Ross *
36*8329232eSGordon Ross * University Acknowledgment- Portions of this document are derived from
37*8329232eSGordon Ross * software developed by the University of California, Berkeley, and its
38*8329232eSGordon Ross * contributors.
39*8329232eSGordon Ross */
40*8329232eSGordon Ross
41*8329232eSGordon Ross #include <sys/types.h>
42*8329232eSGordon Ross #include <sys/param.h>
43*8329232eSGordon Ross #include <sys/systm.h>
44*8329232eSGordon Ross #include <sys/errno.h>
45*8329232eSGordon Ross #include <sys/cred.h>
46*8329232eSGordon Ross #include <sys/user.h>
47*8329232eSGordon Ross #include <sys/uio.h>
48*8329232eSGordon Ross #include <sys/vfs.h>
49*8329232eSGordon Ross #include <sys/vnode.h>
50*8329232eSGordon Ross #include <sys/pathname.h>
51*8329232eSGordon Ross #include <sys/proc.h>
52*8329232eSGordon Ross #include <sys/vtrace.h>
53*8329232eSGordon Ross #include <sys/sysmacros.h>
54*8329232eSGordon Ross #include <sys/debug.h>
55*8329232eSGordon Ross #include <sys/dirent.h>
56*8329232eSGordon Ross #include <sys/zone.h>
57*8329232eSGordon Ross #include <sys/fs/snode.h>
58*8329232eSGordon Ross
59*8329232eSGordon Ross #include <libfksmbfs.h>
60*8329232eSGordon Ross
61*8329232eSGordon Ross extern vnode_t *rootdir;
62*8329232eSGordon Ross
63*8329232eSGordon Ross /*
64*8329232eSGordon Ross * Simplified variation on lookuppnvp()
65*8329232eSGordon Ross */
66*8329232eSGordon Ross int
fake_lookup(vnode_t * dvp,char * path,vnode_t ** vpp)67*8329232eSGordon Ross fake_lookup(vnode_t *dvp, char *path, vnode_t **vpp)
68*8329232eSGordon Ross {
69*8329232eSGordon Ross char component[MAXNAMELEN]; /* buffer for component */
70*8329232eSGordon Ross pathname_t pn;
71*8329232eSGordon Ross cred_t *cr;
72*8329232eSGordon Ross vnode_t *cvp; /* current component vp */
73*8329232eSGordon Ross vnode_t *nvp; /* next component vp */
74*8329232eSGordon Ross char *p;
75*8329232eSGordon Ross int flags = 0;
76*8329232eSGordon Ross int error, len;
77*8329232eSGordon Ross
78*8329232eSGordon Ross bzero(&pn, sizeof (pn));
79*8329232eSGordon Ross pn.pn_buf = path;
80*8329232eSGordon Ross pn.pn_path = path;
81*8329232eSGordon Ross pn.pn_pathlen = strlen(path);
82*8329232eSGordon Ross pn.pn_bufsize = pn.pn_pathlen + 1;
83*8329232eSGordon Ross p = path;
84*8329232eSGordon Ross
85*8329232eSGordon Ross cr = CRED();
86*8329232eSGordon Ross cvp = (dvp != NULL) ? dvp : rootdir;
87*8329232eSGordon Ross VN_HOLD(cvp);
88*8329232eSGordon Ross nvp = NULL;
89*8329232eSGordon Ross
90*8329232eSGordon Ross while (*p != '\0') {
91*8329232eSGordon Ross if (*p == '/') {
92*8329232eSGordon Ross p++;
93*8329232eSGordon Ross continue;
94*8329232eSGordon Ross }
95*8329232eSGordon Ross
96*8329232eSGordon Ross len = strcspn(p, "/");
97*8329232eSGordon Ross ASSERT(len > 0);
98*8329232eSGordon Ross if (len >= MAXNAMELEN)
99*8329232eSGordon Ross return (EINVAL);
100*8329232eSGordon Ross (void) strncpy(component, p, len);
101*8329232eSGordon Ross component[len] = '\0';
102*8329232eSGordon Ross pn.pn_path = p;
103*8329232eSGordon Ross pn.pn_pathlen = strlen(p);
104*8329232eSGordon Ross
105*8329232eSGordon Ross error = VOP_LOOKUP(cvp, component, &nvp, &pn, flags,
106*8329232eSGordon Ross rootdir, cr, NULL, NULL, NULL);
107*8329232eSGordon Ross VN_RELE(cvp);
108*8329232eSGordon Ross if (error != 0)
109*8329232eSGordon Ross return (error);
110*8329232eSGordon Ross
111*8329232eSGordon Ross /* Lookup gave us a hold on nvp */
112*8329232eSGordon Ross cvp = nvp;
113*8329232eSGordon Ross nvp = NULL;
114*8329232eSGordon Ross p += len;
115*8329232eSGordon Ross }
116*8329232eSGordon Ross
117*8329232eSGordon Ross *vpp = cvp;
118*8329232eSGordon Ross return (0);
119*8329232eSGordon Ross }
120*8329232eSGordon Ross
121*8329232eSGordon Ross /*
122*8329232eSGordon Ross * Lookup the directory and find the start of the
123*8329232eSGordon Ross * last component of the given path.
124*8329232eSGordon Ross */
125*8329232eSGordon Ross int
fake_lookup_dir(char * path,vnode_t ** vpp,char ** lastcomp)126*8329232eSGordon Ross fake_lookup_dir(char *path, vnode_t **vpp, char **lastcomp)
127*8329232eSGordon Ross {
128*8329232eSGordon Ross vnode_t *dvp;
129*8329232eSGordon Ross char *last;
130*8329232eSGordon Ross char *tpn = NULL;
131*8329232eSGordon Ross int tpn_sz;
132*8329232eSGordon Ross int lc_off;
133*8329232eSGordon Ross int error;
134*8329232eSGordon Ross
135*8329232eSGordon Ross *vpp = NULL;
136*8329232eSGordon Ross *lastcomp = NULL;
137*8329232eSGordon Ross
138*8329232eSGordon Ross tpn_sz = strlen(path) + 1;
139*8329232eSGordon Ross tpn = kmem_alloc(tpn_sz, KM_SLEEP);
140*8329232eSGordon Ross
141*8329232eSGordon Ross /*
142*8329232eSGordon Ross * Get a copy of the path, and zap the last /
143*8329232eSGordon Ross */
144*8329232eSGordon Ross bcopy(path, tpn, tpn_sz);
145*8329232eSGordon Ross last = strrchr(tpn, '/');
146*8329232eSGordon Ross if (last == NULL) {
147*8329232eSGordon Ross lc_off = 0;
148*8329232eSGordon Ross dvp = rootdir;
149*8329232eSGordon Ross VN_HOLD(dvp);
150*8329232eSGordon Ross error = 0;
151*8329232eSGordon Ross } else {
152*8329232eSGordon Ross *last++ = '\0';
153*8329232eSGordon Ross if (*last == '\0') {
154*8329232eSGordon Ross error = EINVAL;
155*8329232eSGordon Ross goto out;
156*8329232eSGordon Ross }
157*8329232eSGordon Ross error = fake_lookup(rootdir, tpn, &dvp);
158*8329232eSGordon Ross if (error != 0) {
159*8329232eSGordon Ross /* dir not found */
160*8329232eSGordon Ross goto out;
161*8329232eSGordon Ross }
162*8329232eSGordon Ross lc_off = last - tpn;
163*8329232eSGordon Ross ASSERT(lc_off >= 0 && lc_off < tpn_sz);
164*8329232eSGordon Ross }
165*8329232eSGordon Ross *vpp = dvp;
166*8329232eSGordon Ross *lastcomp = path + lc_off;
167*8329232eSGordon Ross
168*8329232eSGordon Ross out:
169*8329232eSGordon Ross if (tpn != NULL)
170*8329232eSGordon Ross kmem_free(tpn, tpn_sz);
171*8329232eSGordon Ross
172*8329232eSGordon Ross return (error);
173*8329232eSGordon Ross }
174