[reactos] 04/04: [NTOSKRNL] Use the security descriptor for all the symlinks

[Pierre Schweitzer]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=fe6c7f05e26a3f9e3b1915...

commit fe6c7f05e26a3f9e3b1915c849abc21799904ffc
Author:     Pierre Schweitzer [e-mail]
AuthorDate: Tue May 21 19:27:32 2019 +0200
Commit:     Pierre Schweitzer [e-mail]
CommitDate: Tue May 21 19:28:17 2019 +0200

[NTOSKRNL] Use the security descriptor for all the symlinks
---
 ntoskrnl/ob/obname.c | 22 +++++++++++++---------
 1 file changed, 13 insertions(+), 9 deletions(-)

diff --git a/ntoskrnl/ob/obname.c b/ntoskrnl/ob/obname.c
index 3a967872028..f9ccb914022 100644
--- a/ntoskrnl/ob/obname.c
+++ b/ntoskrnl/ob/obname.c
@@ -169,14 +169,13 @@ ObpCreateDosDevicesDirectory(VOID)
     Status = NtCreateDirectoryObject(&Handle,
                                      DIRECTORY_ALL_ACCESS,
                                      &ObjectAttributes);
-    RtlGetDaclSecurityDescriptor(&DosDevicesSD, &DaclPresent, &Dacl, &DaclDefaulted);
-    ExFreePoolWithTag(Dacl, 'lcaD');
-    if (!NT_SUCCESS(Status)) return Status;
+    if (!NT_SUCCESS(Status))
+        goto done;

/* Create the system device map */
     Status = ObpCreateDeviceMap(Handle);
     if (!NT_SUCCESS(Status))
-        return Status;
+        goto done;

/*********************************************\
     |*** HACK until we support device mappings ***|
@@ -187,7 +186,7 @@ ObpCreateDosDevicesDirectory(VOID)
                                &LinkName,
                                OBJ_PERMANENT,
                                NULL,
-                               NULL);
+                               &DosDevicesSD);
     Status = NtCreateSymbolicLinkObject(&SymHandle,
                                         SYMBOLIC_LINK_ALL_ACCESS,
                                         &ObjectAttributes,
@@ -208,7 +207,7 @@ ObpCreateDosDevicesDirectory(VOID)
                                &LinkName,
                                OBJ_PERMANENT,
                                Handle,
-                               NULL);
+                               &DosDevicesSD);
     Status = NtCreateSymbolicLinkObject(&SymHandle,
                                         SYMBOLIC_LINK_ALL_ACCESS,
                                         &ObjectAttributes,
@@ -226,7 +225,7 @@ ObpCreateDosDevicesDirectory(VOID)
                                &LinkName,
                                OBJ_PERMANENT,
                                Handle,
-                               NULL);
+                               &DosDevicesSD);
     Status = NtCreateSymbolicLinkObject(&SymHandle,
                                         SYMBOLIC_LINK_ALL_ACCESS,
                                         &ObjectAttributes,
@@ -235,7 +234,8 @@ ObpCreateDosDevicesDirectory(VOID)

/* Close the directory handle */
     NtClose(Handle);
-    if (!NT_SUCCESS(Status)) return Status;
+    if (!NT_SUCCESS(Status))
+        goto done;

/*
      * Initialize the \DosDevices symbolic link pointing to the global
@@ -248,13 +248,17 @@ ObpCreateDosDevicesDirectory(VOID)
                                &LinkName,
                                OBJ_PERMANENT,
                                NULL,
-                               NULL);
+                               &DosDevicesSD);
     Status = NtCreateSymbolicLinkObject(&SymHandle,
                                         SYMBOLIC_LINK_ALL_ACCESS,
                                         &ObjectAttributes,
                                         &RootName);
     if (NT_SUCCESS(Status)) NtClose(SymHandle);

+done:
+    RtlGetDaclSecurityDescriptor(&DosDevicesSD, &DaclPresent, &Dacl, &DaclDefaulted);
+    ExFreePoolWithTag(Dacl, 'lcaD');
+
     /* Return status */
     return Status;
 }