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freebsd-skq/sys/fs/nwfs/nwfs_subr.c

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/*
* Copyright (c) 1999, 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Boris Popov.
* 4. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* 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/malloc.h>
#include <machine/clock.h>
#include <sys/time.h>
#include <netncp/ncp.h>
#include <netncp/ncp_conn.h>
#include <netncp/ncp_ncp.h>
#include <netncp/ncp_subr.h>
#include <netncp/ncp_rq.h>
#include <netncp/nwerror.h>
#include <nwfs/nwfs.h>
#include <nwfs/nwfs_node.h>
#include <nwfs/nwfs_subr.h>
MALLOC_DEFINE(M_NWFSDATA, "NWFS data", "NWFS private data");
static void
ncp_extract_file_info(struct nwmount *nmp, struct ncp_rq *rqp, struct nw_entry_info *target) {
u_char name_len;
const int info_struct_size = sizeof(struct nw_entry_info) - 257;
ncp_rp_mem(rqp,(caddr_t)target,info_struct_size);
name_len = ncp_rp_byte(rqp);
target->nameLen = name_len;
ncp_rp_mem(rqp,(caddr_t)target->entryName, name_len);
target->entryName[name_len] = '\0';
ncp_path2unix(target->entryName, target->entryName, name_len, &nmp->m.nls);
return;
}
static void
ncp_update_file_info(struct nwmount *nmp, struct ncp_rq *rqp,
struct nw_entry_info *target)
{
int info_struct_size = sizeof(struct nw_entry_info) - 257;
ncp_rp_mem(rqp,(caddr_t)target,info_struct_size);
return;
}
int
ncp_initsearch(struct vnode *dvp,struct proc *p,struct ucred *cred)
{
struct nwmount *nmp = VTONWFS(dvp);
struct ncp_conn *conn = NWFSTOCONN(nmp);
struct nwnode *np = VTONW(dvp);
u_int8_t volnum = nmp->n_volume;
u_int32_t dirent = np->n_fid.f_id;
int error;
DECLARE_RQ;
NCPNDEBUG("vol=%d,dir=%d\n", volnum, dirent);
NCP_RQ_HEAD(87,p,cred);
ncp_rq_byte(rqp, 2); /* subfunction */
ncp_rq_byte(rqp, nmp->name_space);
ncp_rq_byte(rqp, 0); /* reserved */
ncp_rq_dbase_path(rqp, volnum, dirent, 0, NULL, NULL);
checkbad(ncp_request(conn,rqp));
ncp_rp_mem(rqp,(caddr_t)&np->n_seq, sizeof(np->n_seq));
NCP_RQ_EXIT;
return error;
}
int
ncp_search_for_file_or_subdir(struct nwmount *nmp,
struct nw_search_seq *seq,
struct nw_entry_info *target,
struct proc *p,struct ucred *cred)
{
struct ncp_conn *conn = NWFSTOCONN(nmp);
int error;
DECLARE_RQ;
NCP_RQ_HEAD(87,p,cred);
ncp_rq_byte(rqp, 3); /* subfunction */
ncp_rq_byte(rqp, nmp->name_space);
ncp_rq_byte(rqp, 0); /* data stream */
ncp_rq_word_lh(rqp, 0xffff); /* Search attribs */
ncp_rq_dword(rqp, IM_ALL); /* return info mask */
ncp_rq_mem(rqp, (caddr_t)seq, 9);
ncp_rq_byte(rqp, 2); /* 2 byte pattern */
ncp_rq_byte(rqp, 0xff); /* following is a wildcard */
ncp_rq_byte(rqp, '*');
checkbad(ncp_request(conn,rqp));
ncp_rp_mem(rqp,(caddr_t)seq, sizeof(*seq));
ncp_rp_byte(rqp); /* skip */
ncp_extract_file_info(nmp, rqp, target);
NCP_RQ_EXIT;
return error;
}
/*
* Returns information for a (one-component) name relative to the specified
* directory.
*/
int
ncp_obtain_info(struct nwmount *nmp, u_int32_t dirent,
int namelen, char *path, struct nw_entry_info *target,
struct proc *p,struct ucred *cred)
{
struct ncp_conn *conn=NWFSTOCONN(nmp);
int error;
u_char volnum = nmp->n_volume, ns;
DECLARE_RQ;
if (target == NULL) {
NCPFATAL("target == NULL\n");
return EINVAL;
}
ns = (path == NULL || path[0] == 0) ? NW_NS_DOS : nmp->name_space;
NCP_RQ_HEAD(87, p, cred);
ncp_rq_byte(rqp, 6); /* subfunction */
ncp_rq_byte(rqp, ns);
ncp_rq_byte(rqp, ns); /* DestNameSpace */
ncp_rq_word(rqp, htons(0xff00)); /* get all */
ncp_rq_dword(rqp, IM_ALL);
ncp_rq_dbase_path(rqp, volnum, dirent, namelen, path, &nmp->m.nls);
checkbad(ncp_request(conn,rqp));
if (path)
ncp_extract_file_info(nmp, rqp, target);
else
ncp_update_file_info(nmp, rqp, target);
NCP_RQ_EXIT;
return error;
}
/*
* lookup name pointed by cnp in directory dvp and return file info in np.
* May be I should create a little cache, but another way is to minimize
* number of calls, on other hand, in multiprocess environment ...
*/
int
ncp_lookup(struct vnode *dvp, int len, char *name, struct nw_entry_info *fap,
struct proc *p,struct ucred *cred)
{
struct nwmount *nmp;
struct nwnode *dnp = VTONW(dvp);
struct ncp_conn *conn;
int error;
if (!dvp || dvp->v_type != VDIR) {
nwfs_printf("dvp is NULL or not a directory.\n");
return (ENOENT);
}
nmp = VTONWFS(dvp);
conn = NWFSTOCONN(nmp);
if (len == 1 && name[0] == '.') {
if (strcmp(dnp->n_name, NWFS_ROOTVOL) == 0) {
error = ncp_obtain_info(nmp, dnp->n_fid.f_id, 0, NULL,
fap, p, cred);
} else {
error = ncp_obtain_info(nmp, dnp->n_fid.f_parent,
dnp->n_nmlen, dnp->n_name, fap, p, cred);
}
return error;
} else if (len == 2 && name[0] == '.' && name[1] == '.') {
printf("%s: knows NOTHING about '..'\n", __FUNCTION__);
return EIO;
} else {
error = ncp_obtain_info(nmp, dnp->n_fid.f_id,
len, name, fap, p, cred);
}
return error;
}
static void ConvertToNWfromDWORD(u_int32_t sfd, ncp_fh *fh);
static void
ConvertToNWfromDWORD(u_int32_t sfd, ncp_fh *fh) {
fh->val1 = (fh->val.val32 = sfd);
return;
}
/*
* If both dir and name are NULL, then in target there's already a looked-up
* entry that wants to be opened.
*/
int
ncp_open_create_file_or_subdir(struct nwmount *nmp,struct vnode *dvp,int namelen,
char *name, int open_create_mode, u_int32_t create_attributes,
int desired_acc_rights, struct ncp_open_info *nop,
struct proc *p,struct ucred *cred)
{
struct ncp_conn *conn=NWFSTOCONN(nmp);
u_int16_t search_attribs = SA_ALL & (~SA_SUBDIR_FILES);
u_int8_t volnum;
u_int32_t dirent;
int error;
DECLARE_RQ;
volnum = nmp->n_volume;
dirent = VTONW(dvp)->n_fid.f_id;
if ((create_attributes & aDIR) != 0) {
search_attribs |= SA_SUBDIR_FILES;
}
NCP_RQ_HEAD(87,p,cred);
ncp_rq_byte(rqp, 1);/* subfunction */
ncp_rq_byte(rqp, nmp->name_space);
ncp_rq_byte(rqp, open_create_mode);
ncp_rq_word(rqp, search_attribs);
ncp_rq_dword(rqp, IM_ALL);
ncp_rq_dword(rqp, create_attributes);
/*
* The desired acc rights seem to be the inherited rights mask for
* directories
*/
ncp_rq_word(rqp, desired_acc_rights);
ncp_rq_dbase_path(rqp, volnum, dirent, namelen, name, &nmp->m.nls);
checkbad(ncp_request(conn,rqp));
nop->origfh = ncp_rp_dword_lh(rqp);
nop->action = ncp_rp_byte(rqp);
ncp_rp_byte(rqp); /* skip */
ncp_extract_file_info(nmp, rqp, &nop->fattr);
ConvertToNWfromDWORD(nop->origfh, &nop->fh);
NCP_RQ_EXIT;
switch(error) {
case NWE_FILE_NO_CREATE_PRIV:
error = EACCES;
break;
}
return error;
}
int
ncp_close_file(struct ncp_conn *conn, ncp_fh *fh,struct proc *p,struct ucred *cred) {
int error;
DECLARE_RQ;
NCP_RQ_HEAD(66,p,cred);
ncp_rq_byte(rqp, 0);
ncp_rq_mem(rqp, (caddr_t)fh, 6);
error = ncp_request(conn,rqp);
NCP_RQ_EXIT_NB;
return error;
}
int
ncp_DeleteNSEntry(struct nwmount *nmp, u_int32_t dirent,
int namelen,char *name,struct proc *p,struct ucred *cred)
{
int error;
struct ncp_conn *conn=NWFSTOCONN(nmp);
DECLARE_RQ;
NCP_RQ_HEAD(87,p,cred);
ncp_rq_byte(rqp, 8); /* subfunction */
ncp_rq_byte(rqp, nmp->name_space);
ncp_rq_byte(rqp, 0); /* reserved */
ncp_rq_word(rqp, SA_ALL); /* search attribs: all */
ncp_rq_dbase_path(rqp, nmp->n_volume, dirent, namelen, name, &nmp->m.nls);
error = ncp_request(conn,rqp);
NCP_RQ_EXIT_NB;
return error;
}
int
ncp_nsrename(struct ncp_conn *conn, int volume, int ns, int oldtype,
struct ncp_nlstables *nt,
nwdirent fdir, char *old_name, int oldlen,
nwdirent tdir, char *new_name, int newlen,
struct proc *p, struct ucred *cred)
{
DECLARE_RQ;
int error;
NCP_RQ_HEAD(87,p,cred);
ncp_rq_byte(rqp, 4);
ncp_rq_byte(rqp, ns);
ncp_rq_byte(rqp, 1);
ncp_rq_word(rqp, oldtype);
/* source Handle Path */
ncp_rq_byte(rqp, volume);
ncp_rq_dword(rqp, fdir);
ncp_rq_byte(rqp, 1);
ncp_rq_byte(rqp, 1); /* 1 source component */
/* dest Handle Path */
ncp_rq_byte(rqp, volume);
ncp_rq_dword(rqp, tdir);
ncp_rq_byte(rqp, 1);
ncp_rq_byte(rqp, 1); /* 1 destination component */
ncp_rq_pathstring(rqp, oldlen, old_name, nt);
ncp_rq_pathstring(rqp, newlen, new_name, nt);
error = ncp_request(conn,rqp);
NCP_RQ_EXIT_NB;
return error;
}
int
ncp_modify_file_or_subdir_dos_info(struct nwmount *nmp, struct vnode *vp,
u_int32_t info_mask,
struct nw_modify_dos_info *info,
struct proc *p,struct ucred *cred)
{
struct nwnode *np=VTONW(vp);
u_int8_t volnum = nmp->n_volume;
u_int32_t dirent = np->n_fid.f_id;
struct ncp_conn *conn=NWFSTOCONN(nmp);
int error;
DECLARE_RQ;
NCP_RQ_HEAD(87,p,cred);
ncp_rq_byte(rqp, 7); /* subfunction */
ncp_rq_byte(rqp, nmp->name_space);
ncp_rq_byte(rqp, 0); /* reserved */
ncp_rq_word(rqp, htons(0x0680)); /* search attribs: all */
ncp_rq_dword(rqp, info_mask);
ncp_rq_mem(rqp, (caddr_t)info, sizeof(*info));
ncp_rq_dbase_path(rqp, volnum, dirent, 0, NULL, NULL);
error = ncp_request(conn,rqp);
NCP_RQ_EXIT_NB;
return error;
}
int
ncp_setattr(vp, vap, cred, procp)
struct vnode *vp;
struct vattr *vap;
struct ucred *cred;
struct proc *procp;
{
struct nwmount *nmp=VTONWFS(vp);
struct nwnode *np=VTONW(vp);
struct ncp_open_info nwn;
struct ncp_conn *conn=NWFSTOCONN(nmp);
struct nw_modify_dos_info info;
int error = 0, info_mask;
DECLARE_RQ;
if (vap->va_size != VNOVAL) {
error = ncp_open_create_file_or_subdir(nmp, vp, 0, NULL, OC_MODE_OPEN, 0,
AR_WRITE | AR_READ, &nwn,procp,cred);
if (error) return error;
NCP_RQ_HEAD(73,procp,cred);
ncp_rq_byte(rqp, 0);
ncp_rq_mem(rqp, (caddr_t)&nwn.fh, 6);
ncp_rq_dword(rqp, htonl(vap->va_size));
ncp_rq_word_hl(rqp, 0);
checkbad(ncp_request(conn,rqp));
np->n_vattr.va_size = np->n_size = vap->va_size;
NCP_RQ_EXIT;
ncp_close_file(conn, &nwn.fh, procp, cred);
if (error) return error;
}
info_mask = 0;
bzero(&info, sizeof(info));
if (vap->va_mtime.tv_sec != VNOVAL) {
info_mask |= (DM_MODIFY_TIME | DM_MODIFY_DATE);
ncp_unix2dostime(&vap->va_mtime, nmp->m.tz, &info.modifyDate, &info.modifyTime, NULL);
}
if (vap->va_atime.tv_sec != VNOVAL) {
info_mask |= (DM_LAST_ACCESS_DATE);
ncp_unix2dostime(&vap->va_atime, nmp->m.tz, &info.lastAccessDate, NULL, NULL);
}
if (info_mask) {
error = ncp_modify_file_or_subdir_dos_info(nmp, vp, info_mask, &info,procp,cred);
}
return (error);
}
int
ncp_get_volume_info_with_number(struct ncp_conn *conn,
int n, struct ncp_volume_info *target,
struct proc *p,struct ucred *cred) {
int error,len;
DECLARE_RQ;
NCP_RQ_HEAD_S(22,44,p,cred);
ncp_rq_byte(rqp,n);
checkbad(ncp_request(conn,rqp));
target->total_blocks = ncp_rp_dword_lh(rqp);
target->free_blocks = ncp_rp_dword_lh(rqp);
target->purgeable_blocks = ncp_rp_dword_lh(rqp);
target->not_yet_purgeable_blocks = ncp_rp_dword_lh(rqp);
target->total_dir_entries = ncp_rp_dword_lh(rqp);
target->available_dir_entries = ncp_rp_dword_lh(rqp);
ncp_rp_dword_lh(rqp);
target->sectors_per_block = ncp_rp_byte(rqp);
bzero(&target->volume_name, sizeof(target->volume_name));
len = ncp_rp_byte(rqp);
if (len > NCP_VOLNAME_LEN) {
error = ENAMETOOLONG;
} else {
ncp_rp_mem(rqp,(caddr_t)&target->volume_name, len);
}
NCP_RQ_EXIT;
return error;
}
int
ncp_get_namespaces(struct ncp_conn *conn, u_int32_t volume, int *nsf,
struct proc *p,struct ucred *cred) {
int error;
u_int8_t ns;
u_int16_t nscnt;
DECLARE_RQ;
NCP_RQ_HEAD(87,p,cred);
ncp_rq_byte(rqp, 24); /* Subfunction: Get Loaded Name Spaces */
ncp_rq_word(rqp, 0);
ncp_rq_byte(rqp, volume);
checkbad(ncp_request(conn,rqp));
nscnt = ncp_rp_word_lh(rqp);
*nsf = 0;
while (nscnt-- > 0) {
ns = ncp_rp_byte(rqp);
*nsf |= 1 << ns;
}
NCP_RQ_EXIT;
return error;
}
int
ncp_lookup_volume(struct ncp_conn *conn, char *volname,
u_char *volNum, u_int32_t *dirEnt,
struct proc *p,struct ucred *cred)
{
int error;
DECLARE_RQ;
NCPNDEBUG("looking up vol %s\n", volname);
NCP_RQ_HEAD(87,p,cred);
ncp_rq_byte(rqp, 22); /* Subfunction: Generate dir handle */
ncp_rq_byte(rqp, 0); /* src name space */
ncp_rq_byte(rqp, 0); /* dst name space, always zero */
ncp_rq_word(rqp, 0); /* dstNSIndicator */
ncp_rq_byte(rqp, 0); /* faked volume number */
ncp_rq_dword(rqp, 0); /* faked dir_base */
ncp_rq_byte(rqp, 0xff); /* Don't have a dir_base */
ncp_rq_byte(rqp, 1); /* 1 path component */
ncp_rq_pstring(rqp, volname);
checkbad(ncp_request(conn,rqp));
ncp_rp_dword_lh(rqp); /* NSDirectoryBase*/
*dirEnt = ncp_rp_dword_lh(rqp);
*volNum = ncp_rp_byte(rqp);
NCP_RQ_EXIT;
return error;
}
/*
* Time & date conversion routines taken from msdosfs. Although leap
* year calculation is bogus, it's sufficient before 2100 :)
*/
/*
* This is the format of the contents of the deTime field in the direntry
* structure.
* We don't use bitfields because we don't know how compilers for
* arbitrary machines will lay them out.
*/
#define DT_2SECONDS_MASK 0x1F /* seconds divided by 2 */
#define DT_2SECONDS_SHIFT 0
#define DT_MINUTES_MASK 0x7E0 /* minutes */
#define DT_MINUTES_SHIFT 5
#define DT_HOURS_MASK 0xF800 /* hours */
#define DT_HOURS_SHIFT 11
/*
* This is the format of the contents of the deDate field in the direntry
* structure.
*/
#define DD_DAY_MASK 0x1F /* day of month */
#define DD_DAY_SHIFT 0
#define DD_MONTH_MASK 0x1E0 /* month */
#define DD_MONTH_SHIFT 5
#define DD_YEAR_MASK 0xFE00 /* year - 1980 */
#define DD_YEAR_SHIFT 9
/*
* Total number of days that have passed for each month in a regular year.
*/
static u_short regyear[] = {
31, 59, 90, 120, 151, 181,
212, 243, 273, 304, 334, 365
};
/*
* Total number of days that have passed for each month in a leap year.
*/
static u_short leapyear[] = {
31, 60, 91, 121, 152, 182,
213, 244, 274, 305, 335, 366
};
/*
* Variables used to remember parts of the last time conversion. Maybe we
* can avoid a full conversion.
*/
static u_long lasttime;
static u_long lastday;
static u_short lastddate;
static u_short lastdtime;
/*
* Convert the unix version of time to dos's idea of time to be used in
* file timestamps. The passed in unix time is assumed to be in GMT.
*/
void
ncp_unix2dostime(tsp, tzoff, ddp, dtp, dhp)
struct timespec *tsp;
int tzoff;
u_int16_t *ddp;
u_int16_t *dtp;
u_int8_t *dhp;
{
u_long t;
u_long days;
u_long inc;
u_long year;
u_long month;
u_short *months;
/*
* If the time from the last conversion is the same as now, then
* skip the computations and use the saved result.
*/
t = tsp->tv_sec - tzoff * 60 - tz.tz_minuteswest * 60 -
(wall_cmos_clock ? adjkerntz : 0);
t &= ~1;
if (lasttime != t) {
lasttime = t;
lastdtime = (((t / 2) % 30) << DT_2SECONDS_SHIFT)
+ (((t / 60) % 60) << DT_MINUTES_SHIFT)
+ (((t / 3600) % 24) << DT_HOURS_SHIFT);
/*
* If the number of days since 1970 is the same as the last
* time we did the computation then skip all this leap year
* and month stuff.
*/
days = t / (24 * 60 * 60);
if (days != lastday) {
lastday = days;
for (year = 1970;; year++) {
inc = year & 0x03 ? 365 : 366;
if (days < inc)
break;
days -= inc;
}
months = year & 0x03 ? regyear : leapyear;
for (month = 0; days >= months[month]; month++)
;
if (month > 0)
days -= months[month - 1];
lastddate = ((days + 1) << DD_DAY_SHIFT)
+ ((month + 1) << DD_MONTH_SHIFT);
/*
* Remember dos's idea of time is relative to 1980.
* unix's is relative to 1970. If somehow we get a
* time before 1980 then don't give totally crazy
* results.
*/
if (year > 1980)
lastddate += (year - 1980) << DD_YEAR_SHIFT;
}
}
if (dtp)
*dtp = lastdtime;
if (dhp)
*dhp = (tsp->tv_sec & 1) * 100 + tsp->tv_nsec / 10000000;
*ddp = lastddate;
}
/*
* The number of seconds between Jan 1, 1970 and Jan 1, 1980. In that
* interval there were 8 regular years and 2 leap years.
*/
#define SECONDSTO1980 (((8 * 365) + (2 * 366)) * (24 * 60 * 60))
static u_short lastdosdate;
static u_long lastseconds;
/*
* Convert from dos' idea of time to unix'. This will probably only be
* called from the stat(), and fstat() system calls and so probably need
* not be too efficient.
*/
void
ncp_dos2unixtime(dd, dt, dh, tzoff, tsp)
u_int dd;
u_int dt;
u_int dh;
int tzoff;
struct timespec *tsp;
{
u_long seconds;
u_long month;
u_long year;
u_long days;
u_short *months;
if (dd == 0) {
/*
* Uninitialized field, return the epoch.
*/
tsp->tv_sec = 0;
tsp->tv_nsec = 0;
return;
}
seconds = (((dt & DT_2SECONDS_MASK) >> DT_2SECONDS_SHIFT) << 1)
+ ((dt & DT_MINUTES_MASK) >> DT_MINUTES_SHIFT) * 60
+ ((dt & DT_HOURS_MASK) >> DT_HOURS_SHIFT) * 3600
+ dh / 100;
/*
* If the year, month, and day from the last conversion are the
* same then use the saved value.
*/
if (lastdosdate != dd) {
lastdosdate = dd;
days = 0;
year = (dd & DD_YEAR_MASK) >> DD_YEAR_SHIFT;
days = year * 365;
days += year / 4 + 1; /* add in leap days */
if ((year & 0x03) == 0)
days--; /* if year is a leap year */
months = year & 0x03 ? regyear : leapyear;
month = (dd & DD_MONTH_MASK) >> DD_MONTH_SHIFT;
if (month < 1 || month > 12) {
month = 1;
}
if (month > 1)
days += months[month - 2];
days += ((dd & DD_DAY_MASK) >> DD_DAY_SHIFT) - 1;
lastseconds = (days * 24 * 60 * 60) + SECONDSTO1980;
}
tsp->tv_sec = seconds + lastseconds + tz.tz_minuteswest * 60 +
tzoff * 60 + (wall_cmos_clock ? adjkerntz : 0);
tsp->tv_nsec = (dh % 100) * 10000000;
}
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