freebsd-dev/sys/fs/smbfs/smbfs_subr.c
Kevin Lo 41f1dccceb Add unicode support to msdosfs and smbfs; original pathes from imura,
bug fixes by Kuan-Chung Chiu <buganini at gmail dot com>.

Tested by me in production for several days at work.
2011-11-18 03:05:20 +00:00

225 lines
5.7 KiB
C

/*-
* Copyright (c) 2000-2001 Boris Popov
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/clock.h>
#include <sys/malloc.h>
#include <sys/time.h>
#include <sys/vnode.h>
#include <sys/sysctl.h>
#include <sys/iconv.h>
#include <netsmb/smb.h>
#include <netsmb/smb_conn.h>
#include <netsmb/smb_subr.h>
#include <netsmb/smb_rq.h>
#include <netsmb/smb_dev.h>
#include <fs/smbfs/smbfs.h>
#include <fs/smbfs/smbfs_node.h>
#include <fs/smbfs/smbfs_subr.h>
MALLOC_DEFINE(M_SMBFSDATA, "smbfs_data", "SMBFS private data");
void
smb_time_local2server(struct timespec *tsp, int tzoff, u_long *seconds)
{
*seconds = tsp->tv_sec - tzoff * 60 /*- tz_minuteswest * 60 -
(wall_cmos_clock ? adjkerntz : 0)*/;
}
void
smb_time_server2local(u_long seconds, int tzoff, struct timespec *tsp)
{
tsp->tv_sec = seconds + tzoff * 60;
/*+ tz_minuteswest * 60 + (wall_cmos_clock ? adjkerntz : 0)*/;
}
/*
* Number of seconds between 1970 and 1601 year
*/
static int64_t DIFF1970TO1601 = 11644473600ULL;
/*
* Time from server comes as UTC, so no need to use tz
*/
void
smb_time_NT2local(int64_t nsec, int tzoff, struct timespec *tsp)
{
smb_time_server2local(nsec / 10000000 - DIFF1970TO1601, 0, tsp);
}
void
smb_time_local2NT(struct timespec *tsp, int tzoff, int64_t *nsec)
{
u_long seconds;
smb_time_local2server(tsp, 0, &seconds);
*nsec = (((int64_t)(seconds) & ~1) + DIFF1970TO1601) * (int64_t)10000000;
}
void
smb_time_unix2dos(struct timespec *tsp, int tzoff, u_int16_t *ddp,
u_int16_t *dtp, u_int8_t *dhp)
{
struct timespec tt;
u_long t;
tt = *tsp;
smb_time_local2server(tsp, tzoff, &t);
tt.tv_sec = t;
timespec2fattime(&tt, 1, ddp, dtp, dhp);
}
void
smb_dos2unixtime(u_int dd, u_int dt, u_int dh, int tzoff,
struct timespec *tsp)
{
fattime2timespec(dd, dt, dh, 1, tsp);
smb_time_server2local(tsp->tv_sec, tzoff, tsp);
}
static int
smb_fphelp(struct mbchain *mbp, struct smb_vc *vcp, struct smbnode *np,
int caseopt)
{
struct smbmount *smp= np->n_mount;
struct smbnode **npp = smp->sm_npstack;
int i, error = 0;
/* simple_lock(&smp->sm_npslock);*/
i = 0;
while (np->n_parent) {
if (i++ == SMBFS_MAXPATHCOMP) {
/* simple_unlock(&smp->sm_npslock);*/
return ENAMETOOLONG;
}
*npp++ = np;
if ((np->n_flag & NREFPARENT) == 0)
break;
np = VTOSMB(np->n_parent);
}
/* if (i == 0)
return smb_put_dmem(mbp, vcp, "\\", 2, caseopt);*/
while (i--) {
np = *--npp;
if (SMB_UNICODE_STRINGS(vcp))
error = mb_put_uint16le(mbp, '\\');
else
error = mb_put_uint8(mbp, '\\');
if (error)
break;
error = smb_put_dmem(mbp, vcp, np->n_name, np->n_nmlen, caseopt);
if (error)
break;
}
/* simple_unlock(&smp->sm_npslock);*/
return error;
}
int
smbfs_fullpath(struct mbchain *mbp, struct smb_vc *vcp, struct smbnode *dnp,
const char *name, int nmlen)
{
int caseopt = SMB_CS_NONE;
int error;
if (SMB_UNICODE_STRINGS(vcp)) {
error = mb_put_padbyte(mbp);
if (error)
return error;
}
if (SMB_DIALECT(vcp) < SMB_DIALECT_LANMAN1_0)
caseopt |= SMB_CS_UPPER;
if (dnp != NULL) {
error = smb_fphelp(mbp, vcp, dnp, caseopt);
if (error)
return error;
}
if (name) {
if (SMB_UNICODE_STRINGS(vcp))
error = mb_put_uint16le(mbp, '\\');
else
error = mb_put_uint8(mbp, '\\');
if (error)
return error;
error = smb_put_dmem(mbp, vcp, name, nmlen, caseopt);
if (error)
return error;
}
error = mb_put_uint8(mbp, 0);
if (SMB_UNICODE_STRINGS(vcp) && error == 0)
error = mb_put_uint8(mbp, 0);
return error;
}
int
smbfs_fname_tolocal(struct smb_vc *vcp, char *name, int *nmlen, int caseopt)
{
int copt = (caseopt == SMB_CS_LOWER ? KICONV_FROM_LOWER :
(caseopt == SMB_CS_UPPER ? KICONV_FROM_UPPER : 0));
int error = 0;
size_t ilen = *nmlen;
size_t olen;
char *ibuf = name;
char outbuf[SMB_MAXFNAMELEN];
char *obuf = outbuf;
if (vcp->vc_tolocal) {
olen = sizeof(outbuf);
bzero(outbuf, sizeof(outbuf));
/*
error = iconv_conv_case
(vcp->vc_tolocal, NULL, NULL, &obuf, &olen, copt);
if (error) return error;
*/
error = iconv_conv_case
(vcp->vc_tolocal, (const char **)&ibuf, &ilen, &obuf, &olen, copt);
if (error && SMB_UNICODE_STRINGS(vcp)) {
/*
* If using unicode, leaving a file name as it was when
* convert fails will cause a problem because the file name
* will contain NULL.
* Here, put '?' and give converted file name.
*/
*obuf = '?';
olen--;
error = 0;
}
if (!error) {
*nmlen = sizeof(outbuf) - olen;
memcpy(name, outbuf, *nmlen);
}
}
return error;
}