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timestamps: setattr uses attributes cansettime,time_delta

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added time_delta argument to xdr_settime4().  if the normal 'time' argument is within time_delta of the current time (get_nfs_time()), it uses time_how=SET_TO_SERVER_TIME4.  otherwise, it uses SET_TO_CLIENT_TIME4 and encodes the time as usual

handle_nfs41_setattr() ignores times if superblock->cansettime==0.  otherwise, it passes in superblock->time_delta (via info.time_delta) along with the other time attributes, for use with xdr_settime4()

Signed-off-by: Casey Bodley <cbodley@umich.edu>
This commit is contained in:
Casey Bodley 2010-10-12 09:44:07 -04:00
parent a8eca1ca7b
commit 8172b5f581
2 changed files with 67 additions and 35 deletions
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44
daemon/nfs41_xdr.c
View file

@ -27,8 +27,10 @@
#include "nfs41_compound.h"
#include "nfs41_ops.h"
#include "nfs41_xdr.h"
#include "util.h"
#include "daemon_debug.h"
static bool_t encode_file_attrs(
fattr4 *attrs,
nfs41_file_info *info);
@ -95,22 +97,38 @@ static bool_t xdr_nfstime4(
/* settime4 */
static uint32_t settime_how(
nfstime4 *newtime,
const nfstime4 *time_delta)
{
nfstime4 current;
get_nfs_time(&current);
/* get the absolute difference between current and newtime */
nfstime_diff(&current, newtime, &current);
nfstime_abs(&current, &current);
/* compare the difference with time_delta */
nfstime_diff(time_delta, &current, &current);
/* use client time if diff > delta (i.e. time_delta - current < 0) */
return current.seconds < 0 ? SET_TO_CLIENT_TIME4 : SET_TO_SERVER_TIME4;
}
static bool_t xdr_settime4(
XDR *xdr,
nfstime4 *nt)
nfstime4 *nt,
const nfstime4 *time_delta)
{
if (xdr->x_op == XDR_ENCODE) {
uint32_t send_value = SET_TO_CLIENT_TIME4;
if (!xdr_u_int32_t(xdr, &send_value))
return FALSE;
} else if (xdr->x_op == XDR_DECODE) {
uint32_t ignored_value;
if (!xdr_u_int32_t(xdr, &ignored_value))
return FALSE;
} else
uint32_t how = settime_how(nt, time_delta);
if (xdr->x_op != XDR_ENCODE) /* not used for decode */
return FALSE;
return xdr_nfstime4(xdr, nt);
if (!xdr_u_int32_t(xdr, &how))
return FALSE;
if (how == SET_TO_CLIENT_TIME4)
return xdr_nfstime4(xdr, nt);
return TRUE;
}
/* stateid4 */
@ -2334,7 +2352,7 @@ static bool_t encode_file_attrs(
attrs->attrmask.arr[1] |= FATTR4_WORD1_MODE;
}
if (info->attrmask.arr[1] & FATTR4_WORD1_TIME_ACCESS_SET) {
if (!xdr_settime4(&localxdr, &info->time_access))
if (!xdr_settime4(&localxdr, &info->time_access, info->time_delta))
return FALSE;
attrs->attrmask.arr[1] |= FATTR4_WORD1_TIME_ACCESS_SET;
}
@ -2344,7 +2362,7 @@ static bool_t encode_file_attrs(
attrs->attrmask.arr[1] |= FATTR4_WORD1_TIME_CREATE;
}
if (info->attrmask.arr[1] & FATTR4_WORD1_TIME_MODIFY_SET) {
if (!xdr_settime4(&localxdr, &info->time_modify))
if (!xdr_settime4(&localxdr, &info->time_modify, info->time_delta))
return FALSE;
attrs->attrmask.arr[1] |= FATTR4_WORD1_TIME_MODIFY_SET;
}

58
daemon/setattr.c
View file

@ -98,12 +98,12 @@ static void remove_unsupported_attrs(
static int handle_nfs41_setattr(setattr_upcall_args *args)
{
int status;
PFILE_BASIC_INFO basic_info = (PFILE_BASIC_INFO)args->buf;
nfs41_open_state *state = args->state;
nfs41_superblock *superblock = state->file.fh.superblock;
stateid4 stateid, *pstateid;
nfs41_file_info info;
int status = NO_ERROR;
pstateid = nfs41_lock_stateid_copy(&state->last_lock, &stateid);
if (pstateid == NULL)
@ -115,24 +115,35 @@ static int handle_nfs41_setattr(setattr_upcall_args *args)
info.hidden = basic_info->FileAttributes & FILE_ATTRIBUTE_HIDDEN ? 1 : 0;
info.attrmask.arr[0] |= FATTR4_WORD0_HIDDEN;
info.attrmask.count = 1;
/* time_create */
if (basic_info->CreationTime.QuadPart > 0) {
file_time_to_nfs_time(&basic_info->CreationTime, &info.time_create);
info.attrmask.arr[1] |= FATTR4_WORD1_TIME_CREATE;
info.attrmask.count = 2;
}
/* time_access_set */
if (basic_info->LastAccessTime.QuadPart > 0) {
file_time_to_nfs_time(&basic_info->LastAccessTime, &info.time_access);
info.attrmask.arr[1] |= FATTR4_WORD1_TIME_ACCESS_SET;
info.attrmask.count = 2;
}
/* time_modify_set */
if (basic_info->LastWriteTime.QuadPart > 0) {
file_time_to_nfs_time(&basic_info->LastWriteTime, &info.time_modify);
info.attrmask.arr[1] |= FATTR4_WORD1_TIME_MODIFY_SET;
info.attrmask.count = 2;
if (superblock->cansettime) {
/* set the time_delta so xdr_settime4() can decide
* whether or not to use SET_TO_SERVER_TIME4 */
info.time_delta = &superblock->time_delta;
/* time_create */
if (basic_info->CreationTime.QuadPart > 0) {
file_time_to_nfs_time(&basic_info->CreationTime,
&info.time_create);
info.attrmask.arr[1] |= FATTR4_WORD1_TIME_CREATE;
info.attrmask.count = 2;
}
/* time_access_set */
if (basic_info->LastAccessTime.QuadPart > 0) {
file_time_to_nfs_time(&basic_info->LastAccessTime,
&info.time_access);
info.attrmask.arr[1] |= FATTR4_WORD1_TIME_ACCESS_SET;
info.attrmask.count = 2;
}
/* time_modify_set */
if (basic_info->LastWriteTime.QuadPart > 0) {
file_time_to_nfs_time(&basic_info->LastWriteTime,
&info.time_modify);
info.attrmask.arr[1] |= FATTR4_WORD1_TIME_MODIFY_SET;
info.attrmask.count = 2;
}
}
/* mode */
if (basic_info->FileAttributes & FILE_ATTRIBUTE_READONLY) {
info.mode = 0444;
@ -140,19 +151,22 @@ static int handle_nfs41_setattr(setattr_upcall_args *args)
info.attrmask.count = 2;
}
/* only ask for attributes that are supported by the filesystem */
AcquireSRWLockShared(&superblock->lock);
remove_unsupported_attrs(&superblock->supported_attrs, &info.attrmask);
ReleaseSRWLockShared(&superblock->lock);
if (!info.attrmask.count)
return 0;
goto out;
status = nfs41_setattr(state->session, &state->file, pstateid, &info);
if (status)
if (status) {
dprintf(1, "nfs41_setattr() failed with error %s.\n",
nfs_error_string(status));
return nfs_to_windows_error(status, ERROR_NOT_SUPPORTED);
status = nfs_to_windows_error(status, ERROR_NOT_SUPPORTED);
}
out:
return status;
}
static int handle_nfs41_remove(setattr_upcall_args *args)