+++ /dev/null
-/* NFSv4.1 client for Windows
- * Copyright © 2012 The Regents of the University of Michigan
- *
- * Olga Kornievskaia <aglo@umich.edu>
- * Casey Bodley <cbodley@umich.edu>
- *
- * This library is free software; you can redistribute it and/or modify it
- * under the terms of the GNU Lesser General Public License as published by
- * the Free Software Foundation; either version 2.1 of the License, or (at
- * your option) any later version.
- *
- * This library is distributed in the hope that it will be useful, but
- * without any warranty; without even the implied warranty of merchantability
- * or fitness for a particular purpose. See the GNU Lesser General Public
- * License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this library; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- */
-
-#include <windows.h>
-#include <strsafe.h>
-#include <stdio.h>
-#include <time.h>
-
-#include "nfs41_ops.h"
-#include "from_kernel.h"
-#include "upcall.h"
-#include "util.h"
-#include "daemon_debug.h"
-
-
-/* windows volume queries want size in 'units', so we have to
- * convert the nfs space_* attributes from bytes to units */
-#define SECTORS_PER_UNIT 8
-#define BYTES_PER_SECTOR 512
-#define BYTES_PER_UNIT (SECTORS_PER_UNIT * BYTES_PER_SECTOR)
-
-#define TO_UNITS(bytes) (bytes / BYTES_PER_UNIT)
-
-#define VOLUME_CACHE_EXPIRATION 20
-
-
-/* NFS41_VOLUME_QUERY */
-static int parse_volume(unsigned char *buffer, uint32_t length, nfs41_upcall *upcall)
-{
- int status;
- volume_upcall_args *args = &upcall->args.volume;
-
- status = safe_read(&buffer, &length, &args->query, sizeof(FS_INFORMATION_CLASS));
- if (status) goto out;
-
- dprintf(1, "parsing NFS41_VOLUME_QUERY: query=%d\n", args->query);
-out:
- return status;
-}
-
-static int get_volume_size_info(
- IN nfs41_open_state *state,
- IN const char *query,
- OUT OPTIONAL PLONGLONG total_out,
- OUT OPTIONAL PLONGLONG user_out,
- OUT OPTIONAL PLONGLONG avail_out)
-{
- nfs41_file_info info = { 0 };
- nfs41_superblock *superblock = state->file.fh.superblock;
- int status = ERROR_NOT_FOUND;
-
- AcquireSRWLockShared(&superblock->lock);
- /* check superblock for cached attributes */
- if (time(NULL) <= superblock->cache_expiration) {
- info.space_total = superblock->space_total;
- info.space_avail = superblock->space_avail;
- info.space_free = superblock->space_free;
- status = NO_ERROR;
-
- dprintf(2, "%s cached: %llu user, %llu free of %llu total\n",
- query, info.space_avail, info.space_free, info.space_total);
- }
- ReleaseSRWLockShared(&superblock->lock);
-
- if (status) {
- bitmap4 attr_request = { 2, { 0, FATTR4_WORD1_SPACE_AVAIL |
- FATTR4_WORD1_SPACE_FREE | FATTR4_WORD1_SPACE_TOTAL } };
-
- /* query the space_ attributes of the filesystem */
- status = nfs41_getattr(state->session, &state->file,
- &attr_request, &info);
- if (status) {
- eprintf("nfs41_getattr() failed with %s\n",
- nfs_error_string(status));
- status = nfs_to_windows_error(status, ERROR_BAD_NET_RESP);
- goto out;
- }
-
- AcquireSRWLockExclusive(&superblock->lock);
- superblock->space_total = info.space_total;
- superblock->space_avail = info.space_avail;
- superblock->space_free = info.space_free;
- superblock->cache_expiration = time(NULL) + VOLUME_CACHE_EXPIRATION;
- ReleaseSRWLockExclusive(&superblock->lock);
-
- dprintf(2, "%s: %llu user, %llu free of %llu total\n",
- query, info.space_avail, info.space_free, info.space_total);
- }
-
- if (total_out) *total_out = TO_UNITS(info.space_total);
- if (user_out) *user_out = TO_UNITS(info.space_avail);
- if (avail_out) *avail_out = TO_UNITS(info.space_free);
-out:
- return status;
-}
-
-static int handle_volume(nfs41_upcall *upcall)
-{
- volume_upcall_args *args = &upcall->args.volume;
- int status = NO_ERROR;
-
- switch (args->query) {
- case FileFsSizeInformation:
- args->len = sizeof(args->info.size);
- args->info.size.SectorsPerAllocationUnit = SECTORS_PER_UNIT;
- args->info.size.BytesPerSector = BYTES_PER_SECTOR;
-
- status = get_volume_size_info(upcall->state_ref,
- "FileFsSizeInformation",
- &args->info.size.TotalAllocationUnits.QuadPart,
- &args->info.size.AvailableAllocationUnits.QuadPart,
- NULL);
- break;
-
- case FileFsFullSizeInformation:
- args->len = sizeof(args->info.fullsize);
- args->info.fullsize.SectorsPerAllocationUnit = SECTORS_PER_UNIT;
- args->info.fullsize.BytesPerSector = BYTES_PER_SECTOR;
-
- status = get_volume_size_info(upcall->state_ref,
- "FileFsFullSizeInformation",
- &args->info.fullsize.TotalAllocationUnits.QuadPart,
- &args->info.fullsize.CallerAvailableAllocationUnits.QuadPart,
- &args->info.fullsize.ActualAvailableAllocationUnits.QuadPart);
- break;
-
- case FileFsAttributeInformation:
- args->len = sizeof(args->info.attribute);
- nfs41_superblock_fs_attributes(upcall->state_ref->file.fh.superblock,
- &args->info.attribute);
- break;
-
- default:
- eprintf("unhandled fs query class %d\n", args->query);
- status = ERROR_INVALID_PARAMETER;
- break;
- }
- return status;
-}
-
-static int marshall_volume(unsigned char *buffer, uint32_t *length, nfs41_upcall *upcall)
-{
- int status;
- volume_upcall_args *args = &upcall->args.volume;
-
- status = safe_write(&buffer, length, &args->len, sizeof(args->len));
- if (status) goto out;
- status = safe_write(&buffer, length, &args->info, args->len);
-out:
- return status;
-}
-
-
-const nfs41_upcall_op nfs41_op_volume = {
- parse_volume,
- handle_volume,
- marshall_volume
-};
projects / reactos.git / blobdiff