[hbelusca] 74710: [SETUPLIB]: Additions for filesup.c: - In DoesFileExist(): Call NtOpenFile with FILE_GENERIC_READ instead of the more generic GENERIC_READ access right. - OpenAndMapFile(): Add su...

Author: hbelusca
Date: Wed May 31 00:18:13 2017
New Revision: 74710
URL: http://svn.reactos.org/svn/reactos?rev=74710&view=rev
Log:
[SETUPLIB]: Additions for filesup.c:
- In DoesFileExist(): Call NtOpenFile with FILE_GENERIC_READ instead of the more generic
GENERIC_READ access right.
- OpenAndMapFile(): Add support for opening & mapping files with write access (to be
used latter).
Modified:
    branches/setup_improvements/base/setup/lib/filesup.c
    branches/setup_improvements/base/setup/lib/filesup.h
Modified: branches/setup_improvements/base/setup/lib/filesup.c
URL:
http://svn.reactos.org/svn/reactos/branches/setup_improvements/base/setup/l…
==============================================================================
--- branches/setup_improvements/base/setup/lib/filesup.c        [iso-8859-1] (original)
+++ branches/setup_improvements/base/setup/lib/filesup.c        [iso-8859-1] Wed May 31
00:18:13 2017
@@ -200,7 +200,7 @@
                                NULL);
     Status = NtOpenFile(&FileHandle,
-                        GENERIC_READ | SYNCHRONIZE,
+                        FILE_GENERIC_READ, // Contains SYNCHRONIZE
                         &ObjectAttributes,
                         &IoStatusBlock,
                         FILE_SHARE_READ | FILE_SHARE_WRITE,
@@ -326,19 +326,23 @@
 NTSTATUS
 OpenAndMapFile(
-    IN HANDLE RootDirectory OPTIONAL,
-    IN PCWSTR PathNameToFile,
+    IN  HANDLE RootDirectory OPTIONAL,
+    IN  PCWSTR PathNameToFile,
     OUT PHANDLE FileHandle,         // IN OUT PHANDLE OPTIONAL
     OUT PHANDLE SectionHandle,
     OUT PVOID* BaseAddress,
-    OUT PULONG FileSize OPTIONAL)
+    OUT PULONG FileSize OPTIONAL,
+    IN  BOOLEAN ReadWriteAccess)
 {
     NTSTATUS Status;
     UNICODE_STRING FileName;
     OBJECT_ATTRIBUTES ObjectAttributes;
     IO_STATUS_BLOCK IoStatusBlock;
+    ULONG SectionPageProtection;
     SIZE_T ViewSize;
     PVOID ViewBase;
+
+    /* Open the file */
     RtlInitUnicodeString(&FileName, PathNameToFile);
@@ -352,7 +356,8 @@
     *SectionHandle = NULL;
     Status = NtOpenFile(FileHandle,
-                        GENERIC_READ | SYNCHRONIZE,
+                        FILE_GENERIC_READ | // Contains SYNCHRONIZE
+                            (ReadWriteAccess ? FILE_GENERIC_WRITE : 0),
                         &ObjectAttributes,
                         &IoStatusBlock,
                         FILE_SHARE_READ,
@@ -390,12 +395,16 @@
     /* Map the file in memory */
+    SectionPageProtection = (ReadWriteAccess ? PAGE_READWRITE : PAGE_READONLY);
+
     /* Create the section */
     Status = NtCreateSection(SectionHandle,
-                             SECTION_MAP_READ,
+                             STANDARD_RIGHTS_REQUIRED | SECTION_QUERY |
+                             SECTION_MAP_READ |
+                                (ReadWriteAccess ? SECTION_MAP_WRITE : 0),
                              NULL,
                              NULL,
-                             PAGE_READONLY,
+                             SectionPageProtection,
                              SEC_COMMIT /* | SEC_IMAGE (_NO_EXECUTE) */,
                              *FileHandle);
     if (!NT_SUCCESS(Status))
@@ -417,7 +426,7 @@
                                 &ViewSize,
                                 ViewShare,
                                 0,
-                                PAGE_READONLY);
+                                SectionPageProtection);
     if (!NT_SUCCESS(Status))
     {
         DPRINT1("Failed to map a view for file '%wZ', Status
0x%08lx\n", &FileName, Status);
Modified: branches/setup_improvements/base/setup/lib/filesup.h
URL:
http://svn.reactos.org/svn/reactos/branches/setup_improvements/base/setup/l…
==============================================================================
--- branches/setup_improvements/base/setup/lib/filesup.h        [iso-8859-1] (original)
+++ branches/setup_improvements/base/setup/lib/filesup.h        [iso-8859-1] Wed May 31
00:18:13 2017
@@ -69,12 +69,13 @@
 NTSTATUS
 OpenAndMapFile(
-    IN HANDLE RootDirectory OPTIONAL,
-    IN PCWSTR PathNameToFile,
+    IN  HANDLE RootDirectory OPTIONAL,
+    IN  PCWSTR PathNameToFile,
     OUT PHANDLE FileHandle,         // IN OUT PHANDLE OPTIONAL
     OUT PHANDLE SectionHandle,
     OUT PVOID* BaseAddress,
-    OUT PULONG FileSize OPTIONAL);
+    OUT PULONG FileSize OPTIONAL,
+    IN  BOOLEAN ReadWriteAccess);
 BOOLEAN
 UnMapFile(