* mount.cc: Change comment.
(smb_extended_info): Move here from path.cc. (fs_info::update): Ditto. (mount_info::create_root_entry): Delay conversion to slashes and use passed in buffer to figure out fs type. * path.cc (smb_extended_info): Move. (fs_info::update): Ditto. * mount.h: New file. Move mount information here. * path.h: (fs_info::update): Move. * shared_info.h (mount_item): Ditto.
This commit is contained in:
Christopher Faylor
@ -353,201 +353,6 @@ mkrelpath (char *path, bool caseinsensitive)
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strcpy (path, ".");
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}
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/* Beginning with Samba 3.0.28a, Samba allows to get version information using
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the ExtendedInfo member returned by a FileFsObjectIdInformation request.
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We just store the samba_version information for now. Older versions than
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3.2 are still guessed at by testing the file system flags. */
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#define SAMBA_EXTENDED_INFO_MAGIC 0x536d4261 /* "SmBa" */
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#define SAMBA_EXTENDED_INFO_VERSION_STRING_LENGTH 28
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#pragma pack(push,4)
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struct smb_extended_info {
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DWORD samba_magic; /* Always SAMBA_EXTENDED_INFO_MAGIC */
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DWORD samba_version; /* Major/Minor/Release/Revision */
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DWORD samba_subversion; /* Prerelease/RC/Vendor patch */
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LARGE_INTEGER samba_gitcommitdate;
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char samba_version_string[SAMBA_EXTENDED_INFO_VERSION_STRING_LENGTH];
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};
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#pragma pack(pop)
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bool
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fs_info::update (PUNICODE_STRING upath, HANDLE in_vol)
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{
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NTSTATUS status = STATUS_OBJECT_NAME_NOT_FOUND;
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HANDLE vol;
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OBJECT_ATTRIBUTES attr;
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IO_STATUS_BLOCK io;
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bool no_media = false;
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FILE_FS_DEVICE_INFORMATION ffdi;
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FILE_FS_OBJECTID_INFORMATION ffoi;
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struct {
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FILE_FS_ATTRIBUTE_INFORMATION ffai;
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WCHAR buf[NAME_MAX + 1];
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} ffai_buf;
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struct {
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FILE_FS_VOLUME_INFORMATION ffvi;
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WCHAR buf[NAME_MAX + 1];
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} ffvi_buf;
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UNICODE_STRING fsname, testname;
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clear ();
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if (in_vol)
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vol = in_vol;
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else
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{
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/* Always caseinsensitive. We really just need access to the drive. */
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InitializeObjectAttributes (&attr, upath, OBJ_CASE_INSENSITIVE, NULL,
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NULL);
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status = NtOpenFile (&vol, READ_CONTROL, &attr, &io,
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FILE_SHARE_VALID_FLAGS, FILE_OPEN_FOR_BACKUP_INTENT);
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while (!NT_SUCCESS (status)
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&& (attr.ObjectName->Length > 7 * sizeof (WCHAR)
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|| status == STATUS_NO_MEDIA_IN_DEVICE))
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{
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UNICODE_STRING dir;
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RtlSplitUnicodePath (attr.ObjectName, &dir, NULL);
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attr.ObjectName = &dir;
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if (status == STATUS_NO_MEDIA_IN_DEVICE)
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{
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no_media = true;
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dir.Length = 6 * sizeof (WCHAR);
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}
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else if (dir.Length > 7 * sizeof (WCHAR))
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dir.Length -= sizeof (WCHAR);
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status = NtOpenFile (&vol, READ_CONTROL, &attr, &io,
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FILE_SHARE_VALID_FLAGS,
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FILE_OPEN_FOR_BACKUP_INTENT);
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}
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if (!NT_SUCCESS (status))
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{
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debug_printf ("Cannot access path %S, status %08lx",
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attr.ObjectName, status);
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NtClose (vol);
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return false;
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}
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}
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status = NtQueryVolumeInformationFile (vol, &io, &ffvi_buf.ffvi,
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sizeof ffvi_buf,
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FileFsVolumeInformation);
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sernum = NT_SUCCESS (status) ? ffvi_buf.ffvi.VolumeSerialNumber : 0;
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status = NtQueryVolumeInformationFile (vol, &io, &ffdi, sizeof ffdi,
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FileFsDeviceInformation);
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if (!NT_SUCCESS (status))
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ffdi.DeviceType = ffdi.Characteristics = 0;
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if (ffdi.Characteristics & FILE_REMOTE_DEVICE
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|| (!ffdi.DeviceType
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&& RtlEqualUnicodePathPrefix (attr.ObjectName, L"\\??\\UNC\\", TRUE)))
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is_remote_drive (true);
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else
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is_remote_drive (false);
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if (!no_media)
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status = NtQueryVolumeInformationFile (vol, &io, &ffai_buf.ffai,
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sizeof ffai_buf,
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FileFsAttributeInformation);
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if (no_media || !NT_SUCCESS (status))
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{
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debug_printf ("Cannot get volume attributes (%S), %08lx",
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attr.ObjectName, status);
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if (!in_vol)
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NtClose (vol);
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return false;
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}
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flags (ffai_buf.ffai.FileSystemAttributes);
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name_len (ffai_buf.ffai.MaximumComponentNameLength);
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/* Should be reevaluated for each new OS. Right now this mask is valid up
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to Vista. The important point here is to test only flags indicating
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capabilities and to ignore flags indicating a specific state of this
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volume. At present these flags to ignore are FILE_VOLUME_IS_COMPRESSED
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and FILE_READ_ONLY_VOLUME. */
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#define GETVOLINFO_VALID_MASK (0x003701ffUL)
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#define TEST_GVI(f,m) (((f) & GETVOLINFO_VALID_MASK) == (m))
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/* Volume quotas are potentially supported since Samba 3.0, object ids and
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the unicode on disk flag since Samba 3.2. */
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#define SAMBA_IGNORE (FILE_VOLUME_QUOTAS \
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| FILE_SUPPORTS_OBJECT_IDS \
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| FILE_UNICODE_ON_DISK)
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#define FS_IS_SAMBA TEST_GVI(flags () & ~SAMBA_IGNORE, \
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FILE_CASE_SENSITIVE_SEARCH \
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| FILE_CASE_PRESERVED_NAMES \
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| FILE_PERSISTENT_ACLS)
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#define FS_IS_NETAPP_DATAONTAP TEST_GVI(flags (), \
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FILE_CASE_SENSITIVE_SEARCH \
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| FILE_CASE_PRESERVED_NAMES \
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| FILE_UNICODE_ON_DISK \
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| FILE_PERSISTENT_ACLS \
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| FILE_NAMED_STREAMS)
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RtlInitCountedUnicodeString (&fsname, ffai_buf.ffai.FileSystemName,
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ffai_buf.ffai.FileSystemNameLength);
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is_fat (RtlEqualUnicodePathPrefix (&fsname, L"FAT", TRUE));
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RtlInitUnicodeString (&testname, L"NTFS");
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if (is_remote_drive ())
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{
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/* This always fails on NT4. */
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status = NtQueryVolumeInformationFile (vol, &io, &ffoi, sizeof ffoi,
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FileFsObjectIdInformation);
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if (NT_SUCCESS (status))
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{
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smb_extended_info *extended_info = (smb_extended_info *)
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&ffoi.ExtendedInfo;
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if (extended_info->samba_magic == SAMBA_EXTENDED_INFO_MAGIC)
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{
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is_samba (true);
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samba_version (extended_info->samba_version);
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}
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}
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/* Test for Samba on NT4 or for older Samba releases not supporting
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extended info. */
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if (!is_samba ())
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is_samba (RtlEqualUnicodeString (&fsname, &testname, FALSE)
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&& FS_IS_SAMBA);
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if (!is_samba ())
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{
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is_netapp (RtlEqualUnicodeString (&fsname, &testname, FALSE)
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&& FS_IS_NETAPP_DATAONTAP);
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RtlInitUnicodeString (&testname, L"NFS");
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is_nfs (RtlEqualUnicodeString (&fsname, &testname, FALSE));
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if (!is_nfs ())
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{
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/* Known remote file systems which can't handle calls to
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NtQueryDirectoryFile(FileIdBothDirectoryInformation) */
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RtlInitUnicodeString (&testname, L"UNIXFS");
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has_buggy_fileid_dirinfo (RtlEqualUnicodeString (&fsname,
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&testname,
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FALSE));
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/* Known remote file systems with buggy open calls. Further
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explanation in fhandler.cc (fhandler_disk_file::open). */
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RtlInitUnicodeString (&testname, L"SUNWNFS");
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has_buggy_open (RtlEqualUnicodeString (&fsname, &testname,
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FALSE));
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}
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}
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}
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is_ntfs (RtlEqualUnicodeString (&fsname, &testname, FALSE)
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&& !is_samba () && !is_netapp ());
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is_cdrom (ffdi.DeviceType == FILE_DEVICE_CD_ROM);
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has_acls (flags () & FS_PERSISTENT_ACLS);
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hasgood_inode (((flags () & FILE_PERSISTENT_ACLS) && !is_netapp ())
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|| is_nfs ());
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/* Case sensitivity is supported if FILE_CASE_SENSITIVE_SEARCH is set,
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except on Samba which handles Windows clients case insensitive.
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NFS doesn't set the FILE_CASE_SENSITIVE_SEARCH flag but is case
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sensitive. */
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caseinsensitive ((!(flags () & FILE_CASE_SENSITIVE_SEARCH) || is_samba ())
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&& !is_nfs ());
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if (!in_vol)
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NtClose (vol);
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return true;
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}
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void
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path_conv::fillin (HANDLE h)
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{
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