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* autoload.cc (NtQuerySecurityObject): Add.

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* ntdll.h (STATUS_BUFFER_TOO_SMALL): Add definition.
	(NtQuerySecurityObject): Add declaration.
	* security.cc (get_nt_object_attribute): Always use
	NtQuerySecurityObject to retrieve security descriptor.
This commit is contained in:
Corinna Vinschen
2004-04-13 12:14:59 +00:00
parent 7e044afdaf
commit 71ffba498c
4 changed files with 33 additions and 30 deletions
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51
winsup/cygwin/security.cc
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@@ -1374,44 +1374,35 @@ get_nt_object_attribute (HANDLE handle, SE_OBJECT_TYPE object_type,
{
security_descriptor sd;
PSECURITY_DESCRIPTOR psd = NULL;
LONG ret;
if (object_type == SE_REGISTRY_KEY)
NTSTATUS ret;
ULONG len = 0;
ret = NtQuerySecurityObject (handle,
DACL_SECURITY_INFORMATION
| GROUP_SECURITY_INFORMATION
| OWNER_SECURITY_INFORMATION,
sd, len, &len);
if (ret == STATUS_BUFFER_TOO_SMALL)
{
/* use different code for registry handles, for performance reasons */
DWORD len = 0;
if ((ret = RegGetKeySecurity ((HKEY) handle,
DACL_SECURITY_INFORMATION
| GROUP_SECURITY_INFORMATION
| OWNER_SECURITY_INFORMATION,
sd, &len)) != ERROR_INSUFFICIENT_BUFFER)
__seterrno_from_win_error (ret);
else if (!sd.malloc (len))
if (!sd.malloc (len))
set_errno (ENOMEM);
else if ((ret = RegGetKeySecurity ((HKEY) handle,
DACL_SECURITY_INFORMATION
| GROUP_SECURITY_INFORMATION
| OWNER_SECURITY_INFORMATION,
sd, &len)) != ERROR_SUCCESS)
__seterrno_from_win_error (ret);
else
psd = sd;
get_info_from_sd (psd, attribute, uidret, gidret);
ret = NtQuerySecurityObject (handle,
DACL_SECURITY_INFORMATION
| GROUP_SECURITY_INFORMATION
| OWNER_SECURITY_INFORMATION,
sd, len, &len);
}
else if ((ret = GetSecurityInfo (handle, object_type,
DACL_SECURITY_INFORMATION
| GROUP_SECURITY_INFORMATION
| OWNER_SECURITY_INFORMATION,
NULL, NULL, NULL, NULL, &psd)))
if (ret != STATUS_SUCCESS)
{
__seterrno_from_win_error (ret);
return -1;
__seterrno_from_win_error (RtlNtStatusToDosError (ret));
if (object_type == SE_FILE_OBJECT)
return -1;
}
else
{
get_info_from_sd (psd, attribute, uidret, gidret);
LocalFree (psd);
}
psd = sd;
get_info_from_sd (psd, attribute, uidret, gidret);
return 0;
}