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185 lines
6.1 KiB
C
185 lines
6.1 KiB
C
/* NFSv4.1 client for Windows
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* Copyright © 2012 The Regents of the University of Michigan
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*
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* Olga Kornievskaia <aglo@umich.edu>
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* Casey Bodley <cbodley@umich.edu>
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*
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* This library is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or (at
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* your option) any later version.
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*
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* This library is distributed in the hope that it will be useful, but
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* without any warranty; without even the implied warranty of merchantability
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* or fitness for a particular purpose. See the GNU Lesser General Public
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* License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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*/
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#include <windows.h>
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#include <stdio.h>
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#include <strsafe.h>
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#include "nfs41_ops.h"
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#include "name_cache.h"
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#include "upcall.h"
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#include "daemon_debug.h"
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int nfs41_cached_getattr(
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IN nfs41_session *session,
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IN nfs41_path_fh *file,
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OUT nfs41_file_info *info)
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{
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int status;
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/* first look for cached attributes */
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status = nfs41_attr_cache_lookup(session_name_cache(session),
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file->fh.fileid, info);
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if (status) {
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/* fetch attributes from the server */
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bitmap4 attr_request;
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nfs41_superblock_getattr_mask(file->fh.superblock, &attr_request);
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status = nfs41_getattr(session, file, &attr_request, info);
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if (status) {
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eprintf("nfs41_getattr() failed with %s\n",
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nfs_error_string(status));
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status = nfs_to_windows_error(status, ERROR_BAD_NET_RESP);
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}
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}
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return status;
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}
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/* NFS41_FILE_QUERY */
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static int parse_getattr(unsigned char *buffer, uint32_t length, nfs41_upcall *upcall)
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{
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int status;
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getattr_upcall_args *args = &upcall->args.getattr;
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status = safe_read(&buffer, &length, &args->query_class, sizeof(args->query_class));
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if (status) goto out;
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status = safe_read(&buffer, &length, &args->buf_len, sizeof(args->buf_len));
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if (status) goto out;
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dprintf(1, "parsing NFS41_FILE_QUERY: info_class=%d buf_len=%d file=%.*s\n",
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args->query_class, args->buf_len, upcall->state_ref->path.len,
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upcall->state_ref->path.path);
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out:
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return status;
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}
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static int handle_getattr(nfs41_upcall *upcall)
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{
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int status;
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getattr_upcall_args *args = &upcall->args.getattr;
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nfs41_open_state *state = upcall->state_ref;
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nfs41_file_info info = { 0 };
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status = nfs41_cached_getattr(state->session, &state->file, &info);
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if (status) {
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eprintf("nfs41_cached_getattr() failed with %d\n", status);
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goto out;
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}
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if (info.type == NF4LNK) {
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nfs41_file_info target_info;
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int target_status = nfs41_symlink_follow(upcall->root_ref,
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state->session, &state->file, &target_info);
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if (target_status == NO_ERROR && target_info.type == NF4DIR)
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info.symlink_dir = TRUE;
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}
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switch (args->query_class) {
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case FileBasicInformation:
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nfs_to_basic_info(&info, &args->basic_info);
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args->ctime = info.change;
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break;
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case FileStandardInformation:
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nfs_to_standard_info(&info, &args->std_info);
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break;
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case FileAttributeTagInformation:
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args->tag_info.FileAttributes = nfs_file_info_to_attributes(&info);
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args->tag_info.ReparseTag = info.type == NF4LNK ?
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IO_REPARSE_TAG_SYMLINK : 0;
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break;
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case FileInternalInformation:
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args->intr_info.IndexNumber.QuadPart = info.fileid;
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break;
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case FileNetworkOpenInformation:
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nfs_to_network_openinfo(&info, &args->network_info);
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break;
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default:
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eprintf("unhandled file query class %d\n", args->query_class);
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status = ERROR_INVALID_PARAMETER;
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break;
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}
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out:
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return status;
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}
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static int marshall_getattr(unsigned char *buffer, uint32_t *length, nfs41_upcall *upcall)
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{
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int status;
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getattr_upcall_args *args = &upcall->args.getattr;
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uint32_t info_len;
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switch (args->query_class) {
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case FileBasicInformation:
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info_len = sizeof(args->basic_info);
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status = safe_write(&buffer, length, &info_len, sizeof(info_len));
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if (status) goto out;
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status = safe_write(&buffer, length, &args->basic_info, info_len);
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if (status) goto out;
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break;
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case FileStandardInformation:
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info_len = sizeof(args->std_info);
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status = safe_write(&buffer, length, &info_len, sizeof(info_len));
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if (status) goto out;
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status = safe_write(&buffer, length, &args->std_info, info_len);
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if (status) goto out;
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break;
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case FileAttributeTagInformation:
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info_len = sizeof(args->tag_info);
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status = safe_write(&buffer, length, &info_len, sizeof(info_len));
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if (status) goto out;
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status = safe_write(&buffer, length, &args->tag_info, info_len);
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if (status) goto out;
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break;
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case FileInternalInformation:
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info_len = sizeof(args->intr_info);
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status = safe_write(&buffer, length, &info_len, sizeof(info_len));
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if (status) goto out;
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status = safe_write(&buffer, length, &args->intr_info, info_len);
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if (status) goto out;
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break;
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case FileNetworkOpenInformation:
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info_len = sizeof(args->network_info);
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status = safe_write(&buffer, length, &info_len, sizeof(info_len));
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if (status) goto out;
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status = safe_write(&buffer, length, &args->network_info, info_len);
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if (status) goto out;
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break;
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default:
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eprintf("unknown file query class %d\n", args->query_class);
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status = 103;
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goto out;
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}
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status = safe_write(&buffer, length, &args->ctime, sizeof(args->ctime));
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if (status) goto out;
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dprintf(1, "NFS41_FILE_QUERY: downcall changattr=%llu\n", args->ctime);
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out:
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return status;
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}
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const nfs41_upcall_op nfs41_op_getattr = {
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parse_getattr,
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handle_getattr,
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marshall_getattr
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};
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