1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright (c) 1994, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Copyright 2017 Nexenta Systems, Inc. All rights reserved.
25 */
26
27 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
28 /* All Rights Reserved */
29
30 /*
31 * Portions of this source code were derived from Berkeley 4.3 BSD
32 * under license from the Regents of the University of California.
33 */
34
35 /*
36 * Modified version of syscall/unlink.c
37 */
38
39 #include <sys/param.h>
40 #include <sys/isa_defs.h>
41 #include <sys/types.h>
42 #include <sys/sysmacros.h>
43 #include <sys/systm.h>
44 #include <sys/errno.h>
45 #include <sys/vnode.h>
46 #include <sys/vfs.h>
47 #include <sys/uio.h>
48 #include <sys/debug.h>
49 #include <sys/file.h>
50 #include <sys/fcntl.h>
51
52 #include <libfksmbfs.h>
53
54 /*
55 * Unlink a file from a directory
56 * Like syscall/unlinkat.c
57 */
58 int
fake_unlink(char * path,int flags)59 fake_unlink(char *path, int flags)
60 {
61 vnode_t *dvp = NULL;
62 char *lastcomp = NULL;
63 int error;
64
65 if (path == NULL)
66 return (EFAULT);
67
68 error = fake_lookup_dir(path, &dvp, &lastcomp);
69 if (error != 0)
70 return (error);
71
72 /*
73 * Some logic from vn_removeat() here
74 */
75 if (dvp->v_vfsp->vfs_flag & VFS_RDONLY) {
76 error = EROFS;
77 goto out;
78 }
79
80 if (flags == AT_REMOVEDIR) {
81 error = VOP_RMDIR(dvp, lastcomp, NULL, CRED(), NULL, 0);
82 } else {
83 error = VOP_REMOVE(dvp, lastcomp, CRED(), NULL, 0);
84 }
85
86 out:
87 if (dvp != NULL)
88 VN_RELE(dvp);
89
90 return (error);
91 }
92