int nfs4_op_link(struct nfs_argop4 *op, compound_data_t *data,
struct nfs_resop4 *resp)
{
LINK4args * const arg_LINK4 = &op->nfs_argop4_u.oplink;
LINK4res * const res_LINK4 = &resp->nfs_resop4_u.oplink;
cache_entry_t *dir_entry = NULL;
cache_entry_t *file_entry = NULL;
cache_inode_status_t cache_status = CACHE_INODE_SUCCESS;
char *newname = NULL;
resp->resop = NFS4_OP_LINK;
res_LINK4->status = NFS4_OK;
/* Do basic checks on a filehandle */
res_LINK4->status = nfs4_sanity_check_FH(data, DIRECTORY, false);
if (res_LINK4->status != NFS4_OK)
goto out;
res_LINK4->status = nfs4_sanity_check_saved_FH(data, -DIRECTORY, false);
if (res_LINK4->status != NFS4_OK)
goto out;
/*
* This operation creates a hard link, for the file
* represented by the saved FH, in directory represented by
* currentFH under the name arg_LINK4.target
*/
/* Validate and convert the UFT8 objname to a regular string */
res_LINK4->status = nfs4_utf8string2dynamic(&arg_LINK4->newname,
UTF8_SCAN_ALL,
&newname);
if (res_LINK4->status != NFS4_OK)
goto out;
/* get info from compound data */
dir_entry = data->current_entry;
res_LINK4->LINK4res_u.resok4.cinfo.before =
cache_inode_get_changeid4(dir_entry);
file_entry = data->saved_entry;
/* make the link */
cache_status =
cache_inode_link(file_entry, dir_entry, newname);
if (cache_status != CACHE_INODE_SUCCESS) {
res_LINK4->status = nfs4_Errno(cache_status);
goto out;
}
res_LINK4->LINK4res_u.resok4.cinfo.after =
cache_inode_get_changeid4(dir_entry);
res_LINK4->LINK4res_u.resok4.cinfo.atomic = FALSE;
res_LINK4->status = NFS4_OK;
out:
if (newname)
gsh_free(newname);
return res_LINK4->status;
} /* nfs4_op_link */
int nfs4_op_restorefh(struct nfs_argop4 *op, compound_data_t *data,
struct nfs_resop4 *resp)
{
RESTOREFH4res * const res_RESTOREFH = &resp->nfs_resop4_u.oprestorefh;
/* First of all, set the reply to zero to make sure it contains no
parasite information */
memset(resp, 0, sizeof(struct nfs_resop4));
resp->resop = NFS4_OP_RESTOREFH;
res_RESTOREFH->status = NFS4_OK;
LogFullDebugOpaque(COMPONENT_FILEHANDLE,
"Saved FH %s",
LEN_FH_STR,
data->savedFH.nfs_fh4_val,
data->savedFH.nfs_fh4_len);
/* If there is no savedFH, then return an error */
if (nfs4_Is_Fh_Empty(&(data->savedFH)) == NFS4ERR_NOFILEHANDLE) {
/* There is no current FH, return NFS4ERR_RESTOREFH
* (cg RFC3530, page 202)
*/
res_RESTOREFH->status = NFS4ERR_RESTOREFH;
return res_RESTOREFH->status;
}
/* Do basic checks on saved filehandle */
res_RESTOREFH->status =
nfs4_sanity_check_saved_FH(data, NO_FILE_TYPE, true);
if (res_RESTOREFH->status != NFS4_OK)
return res_RESTOREFH->status;
/* Determine if we can get a new export reference. If there is
* no saved export, don't get a reference to it.
*/
if (data->saved_export != NULL) {
if (!export_ready(data->saved_export)) {
/* The SavedFH export has gone bad. */
res_RESTOREFH->status = NFS4ERR_STALE;
return res_RESTOREFH->status;
}
get_gsh_export_ref(data->saved_export);
}
/* Copy the data from saved FH to current FH */
memcpy(data->currentFH.nfs_fh4_val, data->savedFH.nfs_fh4_val,
data->savedFH.nfs_fh4_len);
data->currentFH.nfs_fh4_len = data->savedFH.nfs_fh4_len;
if (op_ctx->ctx_export != NULL)
put_gsh_export(op_ctx->ctx_export);
/* Restore the export information */
op_ctx->ctx_export = data->saved_export;
if (op_ctx->ctx_export != NULL)
op_ctx->fsal_export = op_ctx->ctx_export->fsal_export;
*op_ctx->export_perms = data->saved_export_perms;
/* No need to call nfs4_SetCompoundExport or nfs4_MakeCred
* because we are restoring saved information, and the
* credential checking may be skipped.
*/
/* Update the current entry */
set_current_entry(data, data->saved_obj);
/* Restore the saved stateid */
data->current_stateid = data->saved_stateid;
data->current_stateid_valid = data->saved_stateid_valid;
/* Make RESTOREFH work right for DS handle */
if (data->current_ds != NULL) {
data->current_ds = data->saved_ds;
data->current_filetype = data->saved_filetype;
ds_handle_get_ref(data->current_ds);
}
if (isFullDebug(COMPONENT_NFS_V4)) {
char str[LEN_FH_STR];
sprint_fhandle4(str, &data->currentFH);
LogFullDebug(COMPONENT_NFS_V4,
"RESTORE FH: Current FH %s",
str);
}
return NFS4_OK;
} /* nfs4_op_restorefh */
