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* mount.cc (fs_info::update): Open filesystem with access set to 0. 

Explain why.
This commit is contained in:
Corinna Vinschen 2009-07-22 18:49:48 +00:00
parent c9b8019225
commit d974d420d4
2 changed files with 11 additions and 4 deletions
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5
winsup/cygwin/ChangeLog
View File

@ -1,3 +1,8 @@
2009-07-22 Corinna Vinschen <corinna@vinschen.de>
* mount.cc (fs_info::update): Open filesystem with access set to 0.
Explain why.
2009-07-22 Corinna Vinschen <corinna@vinschen.de>
* mount.cc: Revert accidental checkin.

10
winsup/cygwin/mount.cc
View File

@ -133,8 +133,11 @@ fs_info::update (PUNICODE_STRING upath, HANDLE in_vol)
/* Always caseinsensitive. We really just need access to the drive. */
InitializeObjectAttributes (&attr, upath, OBJ_CASE_INSENSITIVE, NULL,
NULL);
status = NtOpenFile (&vol, READ_CONTROL, &attr, &io,
FILE_SHARE_VALID_FLAGS, FILE_OPEN_FOR_BACKUP_INTENT);
/* At least one filesystem (HGFS, VMware shared folders) doesn't like
to be opened with acces set to just READ_CONTROL. No worries, since
filesystem information is available without any access bit set. */
status = NtOpenFile (&vol, 0, &attr, &io, FILE_SHARE_VALID_FLAGS,
FILE_OPEN_FOR_BACKUP_INTENT);
while (!NT_SUCCESS (status)
&& (attr.ObjectName->Length > 7 * sizeof (WCHAR)
|| status == STATUS_NO_MEDIA_IN_DEVICE))
@ -149,8 +152,7 @@ fs_info::update (PUNICODE_STRING upath, HANDLE in_vol)
}
else if (dir.Length > 7 * sizeof (WCHAR))
dir.Length -= sizeof (WCHAR);
status = NtOpenFile (&vol, READ_CONTROL, &attr, &io,
FILE_SHARE_VALID_FLAGS,
status = NtOpenFile (&vol, 0, &attr, &io, FILE_SHARE_VALID_FLAGS,
FILE_OPEN_FOR_BACKUP_INTENT);
}
if (!NT_SUCCESS (status))