smbfs_subr.c revision 163652 
1/*-
2 * Copyright (c) 2000-2001, Boris Popov
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *    This product includes software developed by Boris Popov.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 *    may be used to endorse or promote products derived from this software
18 *    without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 * $FreeBSD: head/sys/fs/smbfs/smbfs_subr.c 163652 2006-10-24 11:55:18Z phk $
33 */
34#include <sys/param.h>
35#include <sys/systm.h>
36#include <sys/kernel.h>
37#include <sys/clock.h>
38#include <sys/malloc.h>
39#include <sys/time.h>
40#include <sys/vnode.h>
41#include <sys/sysctl.h>
42#include <sys/iconv.h>
43
44#include <netsmb/smb.h>
45#include <netsmb/smb_conn.h>
46#include <netsmb/smb_subr.h>
47#include <netsmb/smb_rq.h>
48#include <netsmb/smb_dev.h>
49
50#include <fs/smbfs/smbfs.h>
51#include <fs/smbfs/smbfs_node.h>
52#include <fs/smbfs/smbfs_subr.h>
53
54MALLOC_DEFINE(M_SMBFSDATA, "smbfs_data", "SMBFS private data");
55
56void
57smb_time_local2server(struct timespec *tsp, int tzoff, u_long *seconds)
58{
59	*seconds = tsp->tv_sec - tzoff * 60 /*- tz_minuteswest * 60 -
60	    (wall_cmos_clock ? adjkerntz : 0)*/;
61}
62
63void
64smb_time_server2local(u_long seconds, int tzoff, struct timespec *tsp)
65{
66	tsp->tv_sec = seconds + tzoff * 60;
67	    /*+ tz_minuteswest * 60 + (wall_cmos_clock ? adjkerntz : 0)*/;
68}
69
70/*
71 * Number of seconds between 1970 and 1601 year
72 */
73static int64_t DIFF1970TO1601 = 11644473600ULL;
74
75/*
76 * Time from server comes as UTC, so no need to use tz
77 */
78void
79smb_time_NT2local(int64_t nsec, int tzoff, struct timespec *tsp)
80{
81	smb_time_server2local(nsec / 10000000 - DIFF1970TO1601, 0, tsp);
82}
83
84void
85smb_time_local2NT(struct timespec *tsp, int tzoff, int64_t *nsec)
86{
87	u_long seconds;
88
89	smb_time_local2server(tsp, 0, &seconds);
90	*nsec = (((int64_t)(seconds) & ~1) + DIFF1970TO1601) * (int64_t)10000000;
91}
92
93void
94smb_time_unix2dos(struct timespec *tsp, int tzoff, u_int16_t *ddp,
95	u_int16_t *dtp,	u_int8_t *dhp)
96{
97	struct timespec tt;
98	u_long t;
99
100	tt = *tsp;
101	smb_time_local2server(tsp, tzoff, &t);
102	tt.tv_sec = t;
103	timespec2fattime(&tt, 1, ddp, dtp, dhp);
104}
105
106void
107smb_dos2unixtime(u_int dd, u_int dt, u_int dh, int tzoff,
108	struct timespec *tsp)
109{
110
111	fattime2timespec(dd, dt, dh, 1, tsp);
112	smb_time_server2local(tsp->tv_sec, tzoff, tsp);
113}
114
115static int
116smb_fphelp(struct mbchain *mbp, struct smb_vc *vcp, struct smbnode *np,
117	int caseopt)
118{
119	struct smbmount *smp= np->n_mount;
120	struct smbnode **npp = smp->sm_npstack;
121	int i, error = 0;
122
123/*	simple_lock(&smp->sm_npslock);*/
124	i = 0;
125	while (np->n_parent) {
126		if (i++ == SMBFS_MAXPATHCOMP) {
127/*			simple_unlock(&smp->sm_npslock);*/
128			return ENAMETOOLONG;
129		}
130		*npp++ = np;
131		if ((np->n_flag & NREFPARENT) == 0)
132			break;
133		np = VTOSMB(np->n_parent);
134	}
135/*	if (i == 0)
136		return smb_put_dmem(mbp, vcp, "\\", 2, caseopt);*/
137	while (i--) {
138		np = *--npp;
139		error = mb_put_uint8(mbp, '\\');
140		if (error)
141			break;
142		error = smb_put_dmem(mbp, vcp, np->n_name, np->n_nmlen, caseopt);
143		if (error)
144			break;
145	}
146/*	simple_unlock(&smp->sm_npslock);*/
147	return error;
148}
149
150int
151smbfs_fullpath(struct mbchain *mbp, struct smb_vc *vcp, struct smbnode *dnp,
152	const char *name, int nmlen)
153{
154	int caseopt = SMB_CS_NONE;
155	int error;
156
157	if (SMB_DIALECT(vcp) < SMB_DIALECT_LANMAN1_0)
158		caseopt |= SMB_CS_UPPER;
159	if (dnp != NULL) {
160		error = smb_fphelp(mbp, vcp, dnp, caseopt);
161		if (error)
162			return error;
163	}
164	if (name) {
165		error = mb_put_uint8(mbp, '\\');
166		if (error)
167			return error;
168		error = smb_put_dmem(mbp, vcp, name, nmlen, caseopt);
169		if (error)
170			return error;
171	}
172	error = mb_put_uint8(mbp, 0);
173	return error;
174}
175
176int
177smbfs_fname_tolocal(struct smb_vc *vcp, char *name, int *nmlen, int caseopt)
178{
179	int copt = (caseopt == SMB_CS_LOWER ? KICONV_FROM_LOWER :
180		    (caseopt == SMB_CS_UPPER ? KICONV_FROM_UPPER : 0));
181	int error = 0;
182	size_t ilen = *nmlen;
183	size_t olen;
184	char *ibuf = name;
185	char outbuf[SMB_MAXFNAMELEN];
186	char *obuf = outbuf;
187
188	if (vcp->vc_tolocal) {
189		olen = sizeof(outbuf);
190		bzero(outbuf, sizeof(outbuf));
191
192		/*
193		error = iconv_conv_case
194			(vcp->vc_tolocal, NULL, NULL, &obuf, &olen, copt);
195		if (error) return error;
196		*/
197
198		error = iconv_conv_case
199			(vcp->vc_tolocal, (const char **)&ibuf, &ilen, &obuf, &olen, copt);
200		if (!error) {
201			*nmlen = sizeof(outbuf) - olen;
202			memcpy(name, outbuf, *nmlen);
203		}
204	}
205	return error;
206}
207