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a878200934
error: unannotated fall-through between switch labels [-Werror,-Wimplicit-fallthrough] Signed-off-by: Andreas Schneider <asn@samba.org> Reviewed-by: Jeremy Allison <jra@samba.org>
225 lines
6.7 KiB
C
225 lines
6.7 KiB
C
/*
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Unix SMB/CIFS implementation.
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POSIX NTVFS backend - fsinfo
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Copyright (C) Andrew Tridgell 2004
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "includes.h"
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#include "vfs_posix.h"
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#include "librpc/gen_ndr/xattr.h"
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#include "librpc/ndr/libndr.h"
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/* We use libblkid out of e2fsprogs to identify UUID of a volume */
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#ifdef HAVE_LIBBLKID
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#include <blkid/blkid.h>
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#endif
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static NTSTATUS pvfs_blkid_fs_uuid(struct pvfs_state *pvfs, struct stat *st, struct GUID *uuid)
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{
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#ifdef HAVE_LIBBLKID
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NTSTATUS status;
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char *uuid_value = NULL;
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char *devname = NULL;
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devname = blkid_devno_to_devname(st->st_dev);
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if (!devname) {
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ZERO_STRUCTP(uuid);
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return NT_STATUS_OK;
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}
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uuid_value = blkid_get_tag_value(NULL, "UUID", devname);
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free(devname);
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if (!uuid_value) {
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ZERO_STRUCTP(uuid);
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return NT_STATUS_OK;
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}
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status = GUID_from_string(uuid_value, uuid);
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free(uuid_value);
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if (!NT_STATUS_IS_OK(status)) {
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ZERO_STRUCTP(uuid);
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return NT_STATUS_OK;
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}
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return NT_STATUS_OK;
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#else
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ZERO_STRUCTP(uuid);
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return NT_STATUS_OK;
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#endif
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}
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static NTSTATUS pvfs_cache_base_fs_uuid(struct pvfs_state *pvfs, struct stat *st)
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{
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NTSTATUS status;
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struct GUID uuid;
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if (pvfs->base_fs_uuid) return NT_STATUS_OK;
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status = pvfs_blkid_fs_uuid(pvfs, st, &uuid);
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NT_STATUS_NOT_OK_RETURN(status);
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pvfs->base_fs_uuid = talloc(pvfs, struct GUID);
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NT_STATUS_HAVE_NO_MEMORY(pvfs->base_fs_uuid);
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*pvfs->base_fs_uuid = uuid;
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return NT_STATUS_OK;
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}
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/*
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return filesystem space info
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*/
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NTSTATUS pvfs_fsinfo(struct ntvfs_module_context *ntvfs,
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struct ntvfs_request *req, union smb_fsinfo *fs)
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{
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NTSTATUS status;
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struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
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struct pvfs_state);
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uint64_t blocks_free, blocks_total;
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unsigned int bpunit;
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struct stat st;
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const uint16_t block_size = 512;
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/* only some levels need the expensive sys_fsusage() call */
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switch (fs->generic.level) {
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case RAW_QFS_DSKATTR:
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case RAW_QFS_ALLOCATION:
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case RAW_QFS_SIZE_INFO:
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case RAW_QFS_SIZE_INFORMATION:
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case RAW_QFS_FULL_SIZE_INFORMATION:
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if (sys_fsusage(pvfs->base_directory, &blocks_free, &blocks_total) == -1) {
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return pvfs_map_errno(pvfs, errno);
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}
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break;
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default:
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break;
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}
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if (stat(pvfs->base_directory, &st) != 0) {
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return NT_STATUS_DISK_CORRUPT_ERROR;
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}
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/* now fill in the out fields */
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switch (fs->generic.level) {
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case RAW_QFS_GENERIC:
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return NT_STATUS_INVALID_LEVEL;
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case RAW_QFS_DSKATTR:
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/* we need to scale the sizes to fit */
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for (bpunit=64; bpunit<0x10000; bpunit *= 2) {
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if (blocks_total * (double)block_size < bpunit * 512 * 65535.0) {
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break;
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}
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}
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fs->dskattr.out.blocks_per_unit = bpunit;
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fs->dskattr.out.block_size = block_size;
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fs->dskattr.out.units_total = (blocks_total * (double)block_size) / (bpunit * 512);
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fs->dskattr.out.units_free = (blocks_free * (double)block_size) / (bpunit * 512);
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/* we must return a maximum of 2G to old DOS systems, or they get very confused */
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if (bpunit > 64 && req->ctx->protocol <= PROTOCOL_LANMAN2) {
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fs->dskattr.out.blocks_per_unit = 64;
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fs->dskattr.out.units_total = 0xFFFF;
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fs->dskattr.out.units_free = 0xFFFF;
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}
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return NT_STATUS_OK;
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case RAW_QFS_ALLOCATION:
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fs->allocation.out.fs_id = st.st_dev;
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fs->allocation.out.total_alloc_units = blocks_total;
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fs->allocation.out.avail_alloc_units = blocks_free;
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fs->allocation.out.sectors_per_unit = 1;
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fs->allocation.out.bytes_per_sector = block_size;
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return NT_STATUS_OK;
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case RAW_QFS_VOLUME:
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fs->volume.out.serial_number = st.st_ino;
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fs->volume.out.volume_name.s = pvfs->share_name;
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return NT_STATUS_OK;
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case RAW_QFS_VOLUME_INFO:
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case RAW_QFS_VOLUME_INFORMATION:
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unix_to_nt_time(&fs->volume_info.out.create_time, st.st_ctime);
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fs->volume_info.out.serial_number = st.st_ino;
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fs->volume_info.out.volume_name.s = pvfs->share_name;
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return NT_STATUS_OK;
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case RAW_QFS_SIZE_INFO:
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case RAW_QFS_SIZE_INFORMATION:
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fs->size_info.out.total_alloc_units = blocks_total;
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fs->size_info.out.avail_alloc_units = blocks_free;
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fs->size_info.out.sectors_per_unit = 1;
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fs->size_info.out.bytes_per_sector = block_size;
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return NT_STATUS_OK;
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case RAW_QFS_DEVICE_INFO:
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case RAW_QFS_DEVICE_INFORMATION:
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fs->device_info.out.device_type = 0;
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fs->device_info.out.characteristics = 0;
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return NT_STATUS_OK;
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case RAW_QFS_ATTRIBUTE_INFO:
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case RAW_QFS_ATTRIBUTE_INFORMATION:
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fs->attribute_info.out.fs_attr = pvfs->fs_attribs;
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fs->attribute_info.out.max_file_component_length = 255;
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fs->attribute_info.out.fs_type.s = ntvfs->ctx->fs_type;
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return NT_STATUS_OK;
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case RAW_QFS_QUOTA_INFORMATION:
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ZERO_STRUCT(fs->quota_information.out.unknown);
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fs->quota_information.out.quota_soft = 0;
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fs->quota_information.out.quota_hard = 0;
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fs->quota_information.out.quota_flags = 0;
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return NT_STATUS_OK;
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case RAW_QFS_FULL_SIZE_INFORMATION:
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fs->full_size_information.out.total_alloc_units = blocks_total;
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fs->full_size_information.out.call_avail_alloc_units = blocks_free;
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fs->full_size_information.out.actual_avail_alloc_units = blocks_free;
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fs->full_size_information.out.sectors_per_unit = 1;
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fs->full_size_information.out.bytes_per_sector = block_size;
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return NT_STATUS_OK;
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case RAW_QFS_OBJECTID_INFORMATION:
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ZERO_STRUCT(fs->objectid_information.out.guid);
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ZERO_STRUCT(fs->objectid_information.out.unknown);
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status = pvfs_cache_base_fs_uuid(pvfs, &st);
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NT_STATUS_NOT_OK_RETURN(status);
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fs->objectid_information.out.guid = *pvfs->base_fs_uuid;
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return NT_STATUS_OK;
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case RAW_QFS_SECTOR_SIZE_INFORMATION:
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fs->sector_size_info.out.logical_bytes_per_sector = block_size;
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fs->sector_size_info.out.phys_bytes_per_sector_atomic
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= block_size;
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fs->sector_size_info.out.phys_bytes_per_sector_perf
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= block_size;
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fs->sector_size_info.out.fs_effective_phys_bytes_per_sector_atomic
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= block_size;
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fs->sector_size_info.out.flags
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= QFS_SSINFO_FLAGS_ALIGNED_DEVICE
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| QFS_SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE;
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fs->sector_size_info.out.byte_off_sector_align = 0;
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fs->sector_size_info.out.byte_off_partition_align = 0;
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return NT_STATUS_OK;
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default:
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break;
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}
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return NT_STATUS_INVALID_LEVEL;
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}
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