[reactos] 06/09: [SETUPLIB] Add a workaround for installing from USB drives

[Victor Perevertkin]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=6f389a35dbf7b8731f0e32...

commit 6f389a35dbf7b8731f0e3286eeda0d375ad170ea
Author:     Victor Perevertkin [e-mail]
AuthorDate: Sun Dec 20 18:21:27 2020 +0300
Commit:     Victor Perevertkin [e-mail]
CommitDate: Wed Jan 27 05:15:15 2021 +0300

[SETUPLIB] Add a workaround for installing from USB drives
---
 base/setup/lib/setuplib.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/base/setup/lib/setuplib.c b/base/setup/lib/setuplib.c
index 0c3590e38e4..1ee70e6216a 100644
--- a/base/setup/lib/setuplib.c
+++ b/base/setup/lib/setuplib.c
@@ -410,6 +410,8 @@ GetSourcePaths(
     ULONG BufferSize;
     PWCHAR Ptr;

+    // FIXME: commented out to allow installation from USB
+#if 0
     /* Determine the installation source path via the full path of the installer */
     RtlInitEmptyUnicodeString(InstallSourcePath,
                               (PWSTR)((ULONG_PTR)ImageFileBuffer + sizeof(UNICODE_STRING)),
@@ -433,7 +435,7 @@ GetSourcePaths(
     if (Ptr)
         *Ptr = UNICODE_NULL;
     InstallSourcePath->Length = wcslen(InstallSourcePath->Buffer) * sizeof(WCHAR);
-
+#endif

/*
      * Now resolve the full path to \SystemRoot. In case it prefixes
@@ -478,7 +480,8 @@ GetSourcePaths(
         return Status; // Unexpected error

/* Check whether the resolved \SystemRoot is a prefix of the image file path */
-    if (RtlPrefixUnicodeString(&SystemRootPath, InstallSourcePath, TRUE))
+    // FIXME: commented out to allow installation from USB
+    // if (RtlPrefixUnicodeString(&SystemRootPath, InstallSourcePath, TRUE))
     {
         /* Yes it is, so we use instead SystemRoot as the installation source path */
         InstallSourcePath = &SystemRootPath;