diff options
| author | Mounir IDRASSI <mounir.idrassi@idrix.fr> | 2019-03-21 20:58:50 +0100 |
|---|---|---|
| committer | Mounir IDRASSI <mounir.idrassi@idrix.fr> | 2019-03-21 20:58:50 +0100 |
| commit | ecb29e3b3f1a67800922a79c009e80a0eb45ef91 (patch) | |
| tree | ab11de4eee82bb48fa25314d74197847294010db /Library/CommonLib | |
| parent | 4922daee362adf600fd19f91aa11cc603d8d17e1 (diff) | |
| download | VeraCrypt-DCS-ecb29e3b3f1a67800922a79c009e80a0eb45ef91.tar.gz VeraCrypt-DCS-ecb29e3b3f1a67800922a79c009e80a0eb45ef91.zip | |
Enhance Rescue Disk implementation of restoring VeraCrypt loader.
Diffstat (limited to 'Library/CommonLib')
| -rw-r--r-- | Library/CommonLib/EfiFile.c | 42 | ||||
| -rw-r--r-- | Library/CommonLib/EfiMem.c | 27 |
2 files changed, 63 insertions, 6 deletions
diff --git a/Library/CommonLib/EfiFile.c b/Library/CommonLib/EfiFile.c index fdc999c..4839eae 100644 --- a/Library/CommonLib/EfiFile.c +++ b/Library/CommonLib/EfiFile.c @@ -42,6 +42,22 @@ InitFS() { }
EFI_STATUS
+DirectoryCreate(
+ IN EFI_FILE* root,
+ IN CHAR16* name
+ )
+{
+ EFI_FILE* file;
+ EFI_STATUS res;
+ if (!name) { return EFI_INVALID_PARAMETER; }
+
+ res = FileOpen(root, name, &file, EFI_FILE_MODE_READ | EFI_FILE_MODE_CREATE | EFI_FILE_MODE_WRITE, EFI_FILE_DIRECTORY);
+ if (EFI_ERROR(res)) return res;
+ FileClose(file);
+ return res;
+}
+
+EFI_STATUS
FileOpenRoot(
IN EFI_HANDLE rootHandle,
OUT EFI_FILE** rootFile)
@@ -131,12 +147,14 @@ EFI_STATUS FileWrite(
IN EFI_FILE* f,
IN VOID* data,
- IN OUT UINTN* bytes,
+ IN OUT UINTN bytes,
IN OUT UINT64* position)
{
EFI_STATUS res;
+ UINTN remaining;
+ UINT8* pbData = (UINT8*) data;
- if (!f || !data || !bytes) {
+ if (!f || !data) {
return EFI_INVALID_PARAMETER;
}
if (position != NULL) {
@@ -145,7 +163,20 @@ FileWrite( return res;
}
}
- res = f->Write(f, bytes, data);
+ remaining = bytes;
+ res = f->Write(f, &bytes, pbData);
+ if (!EFI_ERROR(res)) {
+ remaining -= bytes;
+ pbData += bytes;
+ bytes = remaining;
+ while ((remaining > 0) && !EFI_ERROR(res))
+ {
+ res = f->Write(f, &bytes, pbData);
+ remaining -= bytes;
+ pbData += bytes;
+ bytes = remaining;
+ }
+ }
if (position != NULL) {
f->GetPosition(f, position);
}
@@ -265,12 +296,11 @@ FileSave( {
EFI_FILE* file;
EFI_STATUS res;
- UINTN sz = size;
if (!data || !name) { return EFI_INVALID_PARAMETER; }
FileDelete(root, name);
res = FileOpen(root, name, &file, EFI_FILE_MODE_READ | EFI_FILE_MODE_CREATE | EFI_FILE_MODE_WRITE, 0);
if (EFI_ERROR(res)) return res;
- res = FileWrite(file, data, &sz, NULL);
+ res = FileWrite(file, data, size, NULL);
FileClose(file);
return res;
}
@@ -356,7 +386,7 @@ FileCopy( datasz = remains > bufSz ? bufSz : remains;
res =FileRead(srcfile, data, &datasz, NULL);
if (EFI_ERROR(res)) goto copyerr;
- res = FileWrite(dstfile, data, &datasz, NULL);
+ res = FileWrite(dstfile, data, datasz, NULL);
if (EFI_ERROR(res)) goto copyerr;
remains -= datasz;
} while (remains > 0);
diff --git a/Library/CommonLib/EfiMem.c b/Library/CommonLib/EfiMem.c index d9386c0..872d3de 100644 --- a/Library/CommonLib/EfiMem.c +++ b/Library/CommonLib/EfiMem.c @@ -72,3 +72,30 @@ PrepareMemory( *mem = buf;
return status;
}
+
+//////////////////////////////////////////////////////////////////////////
+// Memory misc
+//////////////////////////////////////////////////////////////////////////
+EFI_STATUS MemoryHasPattern (
+ CONST VOID* buffer,
+ UINTN bufferLen,
+ CONST VOID* pattern,
+ UINTN patternLen)
+{
+ EFI_STATUS status = EFI_NOT_FOUND;
+ if (patternLen <= bufferLen)
+ {
+ UINTN i;
+ CONST UINT8* memPtr = (CONST UINT8*) buffer;
+ for (i = 0; i <= (bufferLen - patternLen); ++i)
+ {
+ if (CompareMem (&memPtr[i], pattern, patternLen) == 0)
+ {
+ status = EFI_SUCCESS;
+ break;
+ }
+ }
+ }
+
+ return status;
+}
|