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* fhandler_disk_file.cc (is_volume_mountpoint): New static inline

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function.
	(path_conv::ndisk_links): Call is_volume_mountpoint.
	(fhandler_disk_file::readdir_helper): Ditto.
This commit is contained in:
Corinna Vinschen 2007-07-27 09:00:12 +00:00
parent fe7bbe1504
commit 655639ba89
2 changed files with 40 additions and 40 deletions
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7
winsup/cygwin/ChangeLog
View File

@ -1,3 +1,10 @@
2007-07-27 Corinna Vinschen <corinna@vinschen.de>
* fhandler_disk_file.cc (is_volume_mountpoint): New static inline
function.
(path_conv::ndisk_links): Call is_volume_mountpoint.
(fhandler_disk_file::readdir_helper): Ditto.
2007-07-27 Corinna Vinschen <corinna@vinschen.de>
* fhandler.h (enum query_state): Drop redundant query_stat_control.

73
winsup/cygwin/fhandler_disk_file.cc
View File

@ -144,6 +144,31 @@ public:
void rewind () { memset (found, 0, sizeof found); }
};
static inline bool
is_volume_mountpoint (POBJECT_ATTRIBUTES attr)
{
bool ret = false;
IO_STATUS_BLOCK io;
HANDLE reph;
if (NT_SUCCESS (NtOpenFile (&reph, READ_CONTROL, attr, &io,
FILE_SHARE_VALID_FLAGS,
FILE_OPEN_FOR_BACKUP_INTENT
| FILE_OPEN_REPARSE_POINT)))
{
PREPARSE_DATA_BUFFER rp = (PREPARSE_DATA_BUFFER)
alloca (MAXIMUM_REPARSE_DATA_BUFFER_SIZE);
if (NT_SUCCESS (NtFsControlFile (reph, NULL, NULL, NULL,
&io, FSCTL_GET_REPARSE_POINT, NULL, 0,
(LPVOID) rp, MAXIMUM_REPARSE_DATA_BUFFER_SIZE))
&& rp->ReparseTag == IO_REPARSE_TAG_MOUNT_POINT
&& rp->SymbolicLinkReparseBuffer.PrintNameLength == 0)
ret = true;
NtClose (reph);
}
return ret;
}
unsigned __stdcall
path_conv::ndisk_links (DWORD nNumberOfLinks)
{
@ -164,7 +189,6 @@ path_conv::ndisk_links (DWORD nNumberOfLinks)
unsigned count = 0;
bool first = true;
NTSTATUS status;
PFILE_DIRECTORY_INFORMATION fdibuf = (PFILE_DIRECTORY_INFORMATION)
alloca (65536);
__DIR_mounts *dir = new __DIR_mounts (normalized_path);
@ -197,28 +221,14 @@ path_conv::ndisk_links (DWORD nNumberOfLinks)
case FILE_ATTRIBUTE_DIRECTORY | FILE_ATTRIBUTE_REPARSE_POINT:
/* Volume mount point or symlink to directory */
{
HANDLE reph;
UNICODE_STRING fname;
RtlInitCountedUnicodeString (&fname, pfdi->FileNameLength,
pfdi->FileName);
InitializeObjectAttributes (&attr, &fname,
OBJ_CASE_INSENSITIVE, fh, NULL);
if (NT_SUCCESS (status = NtOpenFile (&reph, READ_CONTROL, &attr, &io,
FILE_SHARE_VALID_FLAGS,
FILE_OPEN_FOR_BACKUP_INTENT
| FILE_OPEN_REPARSE_POINT)))
{
PREPARSE_DATA_BUFFER rp = (PREPARSE_DATA_BUFFER)
alloca (MAXIMUM_REPARSE_DATA_BUFFER_SIZE);
if (NT_SUCCESS (NtFsControlFile (reph, NULL, NULL, NULL,
&io, FSCTL_GET_REPARSE_POINT, NULL, 0,
(LPVOID) rp, MAXIMUM_REPARSE_DATA_BUFFER_SIZE))
&& rp->ReparseTag == IO_REPARSE_TAG_MOUNT_POINT
&& rp->SymbolicLinkReparseBuffer.PrintNameLength == 0)
++count;
NtClose (reph);
}
if (is_volume_mountpoint (&attr))
++count;
}
break;
default:
@ -1774,30 +1784,13 @@ fhandler_disk_file::readdir_helper (DIR *dir, dirent *de, DWORD w32_err,
InitializeObjectAttributes (&attr, fname, OBJ_CASE_INSENSITIVE,
get_handle (), NULL);
if (NT_SUCCESS (NtOpenFile (&reph, READ_CONTROL, &attr, &io,
FILE_SHARE_VALID_FLAGS,
FILE_OPEN_FOR_BACKUP_INTENT
| FILE_OPEN_REPARSE_POINT)))
if (is_volume_mountpoint (&attr)
&& (NT_SUCCESS (NtOpenFile (&reph, READ_CONTROL, &attr, &io,
FILE_SHARE_VALID_FLAGS,
FILE_OPEN_FOR_BACKUP_INTENT))))
{
PREPARSE_DATA_BUFFER rp = (PREPARSE_DATA_BUFFER)
alloca (MAXIMUM_REPARSE_DATA_BUFFER_SIZE);
if (NT_SUCCESS (NtFsControlFile (reph, NULL, NULL, NULL,
&io, FSCTL_GET_REPARSE_POINT, NULL, 0,
(LPVOID) rp, MAXIMUM_REPARSE_DATA_BUFFER_SIZE))
&& rp->ReparseTag == IO_REPARSE_TAG_MOUNT_POINT
&& rp->SymbolicLinkReparseBuffer.PrintNameLength == 0)
{
NtClose (reph);
if (NT_SUCCESS (NtOpenFile (&reph, READ_CONTROL, &attr, &io,
FILE_SHARE_VALID_FLAGS,
FILE_OPEN_FOR_BACKUP_INTENT)))
{
de->d_ino = readdir_get_ino_by_handle (reph);
NtClose (reph);
}
}
else
NtClose (reph);
de->d_ino = readdir_get_ino_by_handle (reph);
NtClose (reph);
}
}