diff options
Diffstat (limited to 'source4/ntvfs/posix/pvfs_fsinfo.c')
| -rw-r--r-- | source4/ntvfs/posix/pvfs_fsinfo.c | 224 |
1 files changed, 224 insertions, 0 deletions
diff --git a/source4/ntvfs/posix/pvfs_fsinfo.c b/source4/ntvfs/posix/pvfs_fsinfo.c new file mode 100644 index 0000000..c355c19 --- /dev/null +++ b/source4/ntvfs/posix/pvfs_fsinfo.c @@ -0,0 +1,224 @@ +/* + Unix SMB/CIFS implementation. + + POSIX NTVFS backend - fsinfo + + Copyright (C) Andrew Tridgell 2004 + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program 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 General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. +*/ + +#include "includes.h" +#include "vfs_posix.h" +#include "librpc/gen_ndr/xattr.h" +#include "librpc/ndr/libndr.h" + +/* We use libblkid out of e2fsprogs to identify UUID of a volume */ +#ifdef HAVE_LIBBLKID +#include <blkid/blkid.h> +#endif + +static NTSTATUS pvfs_blkid_fs_uuid(struct pvfs_state *pvfs, struct stat *st, struct GUID *uuid) +{ +#ifdef HAVE_LIBBLKID + NTSTATUS status; + char *uuid_value = NULL; + char *devname = NULL; + + devname = blkid_devno_to_devname(st->st_dev); + if (!devname) { + ZERO_STRUCTP(uuid); + return NT_STATUS_OK; + } + + uuid_value = blkid_get_tag_value(NULL, "UUID", devname); + free(devname); + if (!uuid_value) { + ZERO_STRUCTP(uuid); + return NT_STATUS_OK; + } + + status = GUID_from_string(uuid_value, uuid); + free(uuid_value); + if (!NT_STATUS_IS_OK(status)) { + ZERO_STRUCTP(uuid); + return NT_STATUS_OK; + } + return NT_STATUS_OK; +#else + ZERO_STRUCTP(uuid); + return NT_STATUS_OK; +#endif +} + +static NTSTATUS pvfs_cache_base_fs_uuid(struct pvfs_state *pvfs, struct stat *st) +{ + NTSTATUS status; + struct GUID uuid; + + if (pvfs->base_fs_uuid) return NT_STATUS_OK; + + status = pvfs_blkid_fs_uuid(pvfs, st, &uuid); + NT_STATUS_NOT_OK_RETURN(status); + + pvfs->base_fs_uuid = talloc(pvfs, struct GUID); + NT_STATUS_HAVE_NO_MEMORY(pvfs->base_fs_uuid); + *pvfs->base_fs_uuid = uuid; + + return NT_STATUS_OK; +} +/* + return filesystem space info +*/ +NTSTATUS pvfs_fsinfo(struct ntvfs_module_context *ntvfs, + struct ntvfs_request *req, union smb_fsinfo *fs) +{ + NTSTATUS status; + struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data, + struct pvfs_state); + uint64_t blocks_free, blocks_total; + unsigned int bpunit; + struct stat st; + const uint16_t block_size = 512; + + /* only some levels need the expensive sys_fsusage() call */ + switch (fs->generic.level) { + case RAW_QFS_DSKATTR: + case RAW_QFS_ALLOCATION: + case RAW_QFS_SIZE_INFO: + case RAW_QFS_SIZE_INFORMATION: + case RAW_QFS_FULL_SIZE_INFORMATION: + if (sys_fsusage(pvfs->base_directory, &blocks_free, &blocks_total) == -1) { + return pvfs_map_errno(pvfs, errno); + } + break; + default: + break; + } + + if (stat(pvfs->base_directory, &st) != 0) { + return NT_STATUS_DISK_CORRUPT_ERROR; + } + + /* now fill in the out fields */ + switch (fs->generic.level) { + case RAW_QFS_GENERIC: + return NT_STATUS_INVALID_LEVEL; + + case RAW_QFS_DSKATTR: + /* we need to scale the sizes to fit */ + for (bpunit=64; bpunit<0x10000; bpunit *= 2) { + if (blocks_total * (double)block_size < bpunit * 512 * 65535.0) { + break; + } + } + fs->dskattr.out.blocks_per_unit = bpunit; + fs->dskattr.out.block_size = block_size; + fs->dskattr.out.units_total = (blocks_total * (double)block_size) / (bpunit * 512); + fs->dskattr.out.units_free = (blocks_free * (double)block_size) / (bpunit * 512); + + /* we must return a maximum of 2G to old DOS systems, or they get very confused */ + if (bpunit > 64 && req->ctx->protocol <= PROTOCOL_LANMAN2) { + fs->dskattr.out.blocks_per_unit = 64; + fs->dskattr.out.units_total = 0xFFFF; + fs->dskattr.out.units_free = 0xFFFF; + } + return NT_STATUS_OK; + + case RAW_QFS_ALLOCATION: + fs->allocation.out.fs_id = st.st_dev; + fs->allocation.out.total_alloc_units = blocks_total; + fs->allocation.out.avail_alloc_units = blocks_free; + fs->allocation.out.sectors_per_unit = 1; + fs->allocation.out.bytes_per_sector = block_size; + return NT_STATUS_OK; + + case RAW_QFS_VOLUME: + fs->volume.out.serial_number = st.st_ino; + fs->volume.out.volume_name.s = pvfs->share_name; + return NT_STATUS_OK; + + case RAW_QFS_VOLUME_INFO: + case RAW_QFS_VOLUME_INFORMATION: + unix_to_nt_time(&fs->volume_info.out.create_time, st.st_ctime); + fs->volume_info.out.serial_number = st.st_ino; + fs->volume_info.out.volume_name.s = pvfs->share_name; + return NT_STATUS_OK; + + case RAW_QFS_SIZE_INFO: + case RAW_QFS_SIZE_INFORMATION: + fs->size_info.out.total_alloc_units = blocks_total; + fs->size_info.out.avail_alloc_units = blocks_free; + fs->size_info.out.sectors_per_unit = 1; + fs->size_info.out.bytes_per_sector = block_size; + return NT_STATUS_OK; + + case RAW_QFS_DEVICE_INFO: + case RAW_QFS_DEVICE_INFORMATION: + fs->device_info.out.device_type = 0; + fs->device_info.out.characteristics = 0; + return NT_STATUS_OK; + + case RAW_QFS_ATTRIBUTE_INFO: + case RAW_QFS_ATTRIBUTE_INFORMATION: + fs->attribute_info.out.fs_attr = pvfs->fs_attribs; + fs->attribute_info.out.max_file_component_length = 255; + fs->attribute_info.out.fs_type.s = ntvfs->ctx->fs_type; + return NT_STATUS_OK; + + case RAW_QFS_QUOTA_INFORMATION: + ZERO_STRUCT(fs->quota_information.out.unknown); + fs->quota_information.out.quota_soft = 0; + fs->quota_information.out.quota_hard = 0; + fs->quota_information.out.quota_flags = 0; + return NT_STATUS_OK; + + case RAW_QFS_FULL_SIZE_INFORMATION: + fs->full_size_information.out.total_alloc_units = blocks_total; + fs->full_size_information.out.call_avail_alloc_units = blocks_free; + fs->full_size_information.out.actual_avail_alloc_units = blocks_free; + fs->full_size_information.out.sectors_per_unit = 1; + fs->full_size_information.out.bytes_per_sector = block_size; + return NT_STATUS_OK; + + case RAW_QFS_OBJECTID_INFORMATION: + ZERO_STRUCT(fs->objectid_information.out.guid); + ZERO_STRUCT(fs->objectid_information.out.unknown); + + status = pvfs_cache_base_fs_uuid(pvfs, &st); + NT_STATUS_NOT_OK_RETURN(status); + + fs->objectid_information.out.guid = *pvfs->base_fs_uuid; + return NT_STATUS_OK; + + case RAW_QFS_SECTOR_SIZE_INFORMATION: + fs->sector_size_info.out.logical_bytes_per_sector = block_size; + fs->sector_size_info.out.phys_bytes_per_sector_atomic + = block_size; + fs->sector_size_info.out.phys_bytes_per_sector_perf + = block_size; + fs->sector_size_info.out.fs_effective_phys_bytes_per_sector_atomic + = block_size; + fs->sector_size_info.out.flags + = QFS_SSINFO_FLAGS_ALIGNED_DEVICE + | QFS_SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE; + fs->sector_size_info.out.byte_off_sector_align = 0; + fs->sector_size_info.out.byte_off_partition_align = 0; + return NT_STATUS_OK; + + default: + break; + } + return NT_STATUS_INVALID_LEVEL; +} |