smbfs_subr.c revision 242386 
150472Speter/*-
228263Spst * Copyright (c) 2000-2001 Boris Popov
3183242Ssam * All rights reserved.
428263Spst *
5254975Sjlh * Redistribution and use in source and binary forms, with or without
6254978Sjkim * modification, are permitted provided that the following conditions
7183242Ssam * are met:
8223209Sed * 1. Redistributions of source code must retain the above copyright
9223209Sed *    notice, this list of conditions and the following disclaimer.
10223209Sed * 2. Redistributions in binary form must reproduce the above copyright
11223209Sed *    notice, this list of conditions and the following disclaimer in the
12223209Sed *    documentation and/or other materials provided with the distribution.
13223209Sed *
1428263Spst * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: head/sys/fs/smbfs/smbfs_subr.c 242386 2012-10-31 03:34:07Z davide $
27 */
28#include <sys/param.h>
29#include <sys/systm.h>
30#include <sys/kernel.h>
31#include <sys/clock.h>
32#include <sys/malloc.h>
33#include <sys/time.h>
34#include <sys/vnode.h>
35#include <sys/sysctl.h>
36#include <sys/iconv.h>
37
38#include <netsmb/smb.h>
39#include <netsmb/smb_conn.h>
40#include <netsmb/smb_subr.h>
41#include <netsmb/smb_rq.h>
42#include <netsmb/smb_dev.h>
43
44#include <fs/smbfs/smbfs.h>
45#include <fs/smbfs/smbfs_node.h>
46#include <fs/smbfs/smbfs_subr.h>
47
48MALLOC_DEFINE(M_SMBFSDATA, "smbfs_data", "SMBFS private data");
49MALLOC_DEFINE(M_SMBFSCRED, "smbfs_cred", "SMBFS cred data");
50
51void
52smb_time_local2server(struct timespec *tsp, int tzoff, u_long *seconds)
53{
54	*seconds = tsp->tv_sec - tzoff * 60 /*- tz_minuteswest * 60 -
55	    (wall_cmos_clock ? adjkerntz : 0)*/;
56}
57
58void
59smb_time_server2local(u_long seconds, int tzoff, struct timespec *tsp)
60{
61	tsp->tv_sec = seconds + tzoff * 60;
62	    /*+ tz_minuteswest * 60 + (wall_cmos_clock ? adjkerntz : 0)*/;
63}
64
65/*
66 * Number of seconds between 1970 and 1601 year
67 */
68static int64_t DIFF1970TO1601 = 11644473600ULL;
69
70/*
71 * Time from server comes as UTC, so no need to use tz
72 */
73void
74smb_time_NT2local(int64_t nsec, int tzoff, struct timespec *tsp)
75{
76	smb_time_server2local(nsec / 10000000 - DIFF1970TO1601, 0, tsp);
77}
78
79void
80smb_time_local2NT(struct timespec *tsp, int tzoff, int64_t *nsec)
81{
82	u_long seconds;
83
84	smb_time_local2server(tsp, 0, &seconds);
85	*nsec = (((int64_t)(seconds) & ~1) + DIFF1970TO1601) * (int64_t)10000000;
86}
87
88void
89smb_time_unix2dos(struct timespec *tsp, int tzoff, u_int16_t *ddp,
90	u_int16_t *dtp,	u_int8_t *dhp)
91{
92	struct timespec tt;
93	u_long t;
94
95	tt = *tsp;
96	smb_time_local2server(tsp, tzoff, &t);
97	tt.tv_sec = t;
98	timespec2fattime(&tt, 1, ddp, dtp, dhp);
99}
100
101void
102smb_dos2unixtime(u_int dd, u_int dt, u_int dh, int tzoff,
103	struct timespec *tsp)
104{
105
106	fattime2timespec(dd, dt, dh, 1, tsp);
107	smb_time_server2local(tsp->tv_sec, tzoff, tsp);
108}
109
110static int
111smb_fphelp(struct mbchain *mbp, struct smb_vc *vcp, struct smbnode *np,
112	int caseopt)
113{
114	struct smbmount *smp= np->n_mount;
115	struct smbnode **npp = smp->sm_npstack;
116	int i, error = 0;
117
118/*	simple_lock(&smp->sm_npslock);*/
119	i = 0;
120	while (np->n_parent) {
121		if (i++ == SMBFS_MAXPATHCOMP) {
122/*			simple_unlock(&smp->sm_npslock);*/
123			return ENAMETOOLONG;
124		}
125		*npp++ = np;
126		if ((np->n_flag & NREFPARENT) == 0)
127			break;
128		np = VTOSMB(np->n_parent);
129	}
130/*	if (i == 0)
131		return smb_put_dmem(mbp, vcp, "\\", 2, caseopt);*/
132	while (i--) {
133		np = *--npp;
134		if (SMB_UNICODE_STRINGS(vcp))
135			error = mb_put_uint16le(mbp, '\\');
136		else
137			error = mb_put_uint8(mbp, '\\');
138		if (error)
139			break;
140		error = smb_put_dmem(mbp, vcp, np->n_name, np->n_nmlen, caseopt);
141		if (error)
142			break;
143	}
144/*	simple_unlock(&smp->sm_npslock);*/
145	return error;
146}
147
148int
149smbfs_fullpath(struct mbchain *mbp, struct smb_vc *vcp, struct smbnode *dnp,
150	const char *name, int nmlen)
151{
152	int caseopt = SMB_CS_NONE;
153	int error;
154
155	if (SMB_UNICODE_STRINGS(vcp)) {
156		error = mb_put_padbyte(mbp);
157		if (error)
158			return error;
159	}
160	if (SMB_DIALECT(vcp) < SMB_DIALECT_LANMAN1_0)
161		caseopt |= SMB_CS_UPPER;
162	if (dnp != NULL) {
163		error = smb_fphelp(mbp, vcp, dnp, caseopt);
164		if (error)
165			return error;
166	}
167	if (name) {
168		if (SMB_UNICODE_STRINGS(vcp))
169			error = mb_put_uint16le(mbp, '\\');
170		else
171			error = mb_put_uint8(mbp, '\\');
172		if (error)
173			return error;
174		error = smb_put_dmem(mbp, vcp, name, nmlen, caseopt);
175		if (error)
176			return error;
177	}
178	error = mb_put_uint8(mbp, 0);
179	if (SMB_UNICODE_STRINGS(vcp) && error == 0)
180		error = mb_put_uint8(mbp, 0);
181	return error;
182}
183
184int
185smbfs_fname_tolocal(struct smb_vc *vcp, char *name, int *nmlen, int caseopt)
186{
187	int copt = (caseopt == SMB_CS_LOWER ? KICONV_FROM_LOWER :
188		    (caseopt == SMB_CS_UPPER ? KICONV_FROM_UPPER : 0));
189	int error = 0;
190	size_t ilen = *nmlen;
191	size_t olen;
192	char *ibuf = name;
193	char outbuf[SMB_MAXFNAMELEN];
194	char *obuf = outbuf;
195
196	if (vcp->vc_tolocal) {
197		olen = sizeof(outbuf);
198		bzero(outbuf, sizeof(outbuf));
199
200		/*
201		error = iconv_conv_case
202			(vcp->vc_tolocal, NULL, NULL, &obuf, &olen, copt);
203		if (error) return error;
204		*/
205
206		error = iconv_conv_case
207			(vcp->vc_tolocal, (const char **)&ibuf, &ilen, &obuf, &olen, copt);
208		if (error && SMB_UNICODE_STRINGS(vcp)) {
209			/*
210			 * If using unicode, leaving a file name as it was when
211			 * convert fails will cause a problem because the file name
212			 * will contain NULL.
213			 * Here, put '?' and give converted file name.
214			 */
215			*obuf = '?';
216			olen--;
217			error = 0;
218		}
219		if (!error) {
220			*nmlen = sizeof(outbuf) - olen;
221			memcpy(name, outbuf, *nmlen);
222		}
223	}
224	return error;
225}
226
227void *
228smbfs_malloc_scred(void)
229{
230	return (malloc(sizeof(struct smb_cred), M_SMBFSCRED, M_WAITOK));
231}
232
233void
234smbfs_free_scred(void *scred)
235{
236	free(scred, M_SMBFSCRED);
237}
238