JehanneOS
/
newlib
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

* shared.cc (get_shared_parent_dir): Use global shared_parent_dir 

instead of local dir variable and create handle not inheritable to
	avoid accumulating stray handles in child processes.
	(get_session_parent_dir): Ditto with session_parent_dir variable.
This commit is contained in:
Corinna Vinschen 2011-11-18 17:38:04 +00:00
parent 6a8a9ad8d8
commit c5785504f8
2 changed files with 24 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
winsup/cygwin/ChangeLog
View File

@ -1,3 +1,10 @@
2011-11-18 Corinna Vinschen <corinna@vinschen.de>
* shared.cc (get_shared_parent_dir): Use global shared_parent_dir
instead of local dir variable and create handle not inheritable to
avoid accumulating stray handles in child processes.
(get_session_parent_dir): Ditto with session_parent_dir variable.
2011-11-17 Corinna Vinschen <corinna@vinschen.de>
* shared.cc (shared_info::create): Open global shared data section

30
winsup/cygwin/shared.cc
View File

@ -127,15 +127,16 @@ init_installation_root ()
/* This function returns a handle to the top-level directory in the global
NT namespace used to implement global objects including shared memory. */
static HANDLE NO_COPY shared_parent_dir;
HANDLE
get_shared_parent_dir ()
{
static HANDLE dir;
UNICODE_STRING uname;
OBJECT_ATTRIBUTES attr;
NTSTATUS status;
if (!dir)
if (!shared_parent_dir)
{
WCHAR bnoname[MAX_PATH];
__small_swprintf (bnoname, L"\\BaseNamedObjects\\%s%s-%S",
@ -143,31 +144,33 @@ get_shared_parent_dir ()
_cygwin_testing ? cygwin_version.dll_build_date : "",
&installation_key);
RtlInitUnicodeString (&uname, bnoname);
InitializeObjectAttributes (&attr, &uname, OBJ_INHERIT | OBJ_OPENIF,
NULL, everyone_sd (CYG_SHARED_DIR_ACCESS));
status = NtCreateDirectoryObject (&dir, CYG_SHARED_DIR_ACCESS, &attr);
InitializeObjectAttributes (&attr, &uname, OBJ_OPENIF, NULL,
everyone_sd (CYG_SHARED_DIR_ACCESS));
status = NtCreateDirectoryObject (&shared_parent_dir,
CYG_SHARED_DIR_ACCESS, &attr);
if (!NT_SUCCESS (status))
api_fatal ("NtCreateDirectoryObject(%S): %p", &uname, status);
}
return dir;
return shared_parent_dir;
}
static HANDLE NO_COPY session_parent_dir;
HANDLE
get_session_parent_dir ()
{
static HANDLE dir;
UNICODE_STRING uname;
OBJECT_ATTRIBUTES attr;
NTSTATUS status;
if (!dir)
if (!session_parent_dir)
{
PROCESS_SESSION_INFORMATION psi;
status = NtQueryInformationProcess (NtCurrentProcess (),
ProcessSessionInformation,
&psi, sizeof psi, NULL);
if (!NT_SUCCESS (status) || psi.SessionId == 0)
dir = get_shared_parent_dir ();
session_parent_dir = get_shared_parent_dir ();
else
{
WCHAR bnoname[MAX_PATH];
@ -177,14 +180,15 @@ get_session_parent_dir ()
_cygwin_testing ? cygwin_version.dll_build_date : "",
&installation_key);
RtlInitUnicodeString (&uname, bnoname);
InitializeObjectAttributes (&attr, &uname, OBJ_INHERIT | OBJ_OPENIF,
NULL, everyone_sd(CYG_SHARED_DIR_ACCESS));
status = NtCreateDirectoryObject (&dir, CYG_SHARED_DIR_ACCESS, &attr);
InitializeObjectAttributes (&attr, &uname, OBJ_OPENIF, NULL,
everyone_sd(CYG_SHARED_DIR_ACCESS));
status = NtCreateDirectoryObject (&session_parent_dir,
CYG_SHARED_DIR_ACCESS, &attr);
if (!NT_SUCCESS (status))
api_fatal ("NtCreateDirectoryObject(%S): %p", &uname, status);
}
}
return dir;
return session_parent_dir;
}
char * __stdcall