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deleg: support for CB_GETATTR

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on CB_GETATTR, search for a delegation with the given filehandle.  if found, use its fileid to get its cached attributes.  when encoding the response, only include change and size attributes

Signed-off-by: Casey Bodley <cbodley@citi.umich.edu>
This commit is contained in:
Casey Bodley 2011-08-30 12:53:26 -04:00 • committed by unknown
parent 0184804498
commit 5880a8bb1d
6 changed files with 116 additions and 8 deletions
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49
daemon/callback_xdr.c
View file

@ -25,16 +25,18 @@
*/
#include "nfs41_callback.h"
#include "nfs41_ops.h"
#include "util.h"
#include "daemon_debug.h"
#define CBXLVL 2 /* dprintf level for callback xdr logging */
#define CBX_ERR(msg) dprintf((CBXLVL), __FUNCTION__ ": failed at " msg "\n")
/* common types */
bool_t xdr_bitmap4(XDR *xdr, bitmap4 *bitmap);
bool_t xdr_fattr4(XDR *xdr, fattr4 *fattr);
static bool_t common_stateid(XDR *xdr, stateid4 *stateid)
{
@ -245,12 +247,41 @@ out:
}
/* OP_CB_GETATTR */
static bool_t op_cb_getattr_args(XDR *xdr, struct cb_getattr_args *res)
static bool_t op_cb_getattr_args(XDR *xdr, struct cb_getattr_args *args)
{
bool_t result;
result = xdr_u_int32_t(xdr, &res->target_highest_slotid);
if (!result) { CBX_ERR("getattr.target_highest_slotid"); goto out; }
result = common_fh(xdr, &args->fh);
if (!result) { CBX_ERR("getattr.fh"); goto out; }
result = xdr_bitmap4(xdr, &args->attr_request);
if (!result) { CBX_ERR("getattr.attr_request"); goto out; }
out:
return result;
}
static bool_t info_to_fattr4(nfs41_file_info *info, fattr4 *fattr)
{
XDR fattr_xdr;
bool_t result = TRUE;
/* encode nfs41_file_info into fattr4 */
xdrmem_create(&fattr_xdr, (char*)fattr->attr_vals,
NFS4_OPAQUE_LIMIT, XDR_ENCODE);
/* The only attributes that the server can reliably
* query via CB_GETATTR are size and change. */
if (bitmap_isset(&info->attrmask, 0, FATTR4_WORD0_CHANGE)) {
result = xdr_u_hyper(&fattr_xdr, &info->change);
if (!result) { CBX_ERR("getattr.info.change"); goto out; }
bitmap_set(&fattr->attrmask, 0, FATTR4_WORD0_CHANGE);
}
if (bitmap_isset(&info->attrmask, 0, FATTR4_WORD0_SIZE)) {
result = xdr_u_hyper(&fattr_xdr, &info->size);
if (!result) { CBX_ERR("getattr.info.size"); goto out; }
bitmap_set(&fattr->attrmask, 0, FATTR4_WORD0_SIZE);
}
fattr->attr_vals_len = xdr_getpos(&fattr_xdr);
out:
return result;
}
@ -261,6 +292,16 @@ static bool_t op_cb_getattr_res(XDR *xdr, struct cb_getattr_res *res)
result = xdr_enum(xdr, &res->status);
if (!result) { CBX_ERR("getattr.status"); goto out; }
if (res->status == NFS4_OK) {
fattr4 fattr = { 0 };
result = info_to_fattr4(&res->info, &fattr);
if (!result) { goto out; }
result = xdr_fattr4(xdr, &fattr);
if (!result) { CBX_ERR("getattr.obj_attributes"); goto out; }
}
out:
return result;
}