Adding upstream version 2:4.20.0+dfsg.upstream/2%4.20.0+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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;
+}