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test-drop-caches: use has_dos_drive_prefix()

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This is a companion patch to 'mingw: handle `subst`-ed "DOS drives"':
use the DOS drive prefix handling that is already provided by
`compat/mingw.c` (and which just learned to handle non-alphabetical
"drive letters").

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
This commit is contained in:
Johannes Schindelin 2019-12-04 21:40:01 +01:00
parent 9ac92fed5b
commit 68440496c7
1 changed files with 8 additions and 5 deletions
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13
t/helper/test-drop-caches.c
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@ -6,18 +6,21 @@ static int cmd_sync(void)
{
char Buffer[MAX_PATH];
DWORD dwRet;
char szVolumeAccessPath[] = "\\\\.\\X:";
char szVolumeAccessPath[] = "\\\\.\\XXXX:";
HANDLE hVolWrite;
int success = 0;
int success = 0, dos_drive_prefix;
dwRet = GetCurrentDirectory(MAX_PATH, Buffer);
if ((0 == dwRet) || (dwRet > MAX_PATH))
return error("Error getting current directory");
if ((Buffer[0] < 'A') || (Buffer[0] > 'Z'))
return error("Invalid drive letter '%c'", Buffer[0]);
dos_drive_prefix = has_dos_drive_prefix(Buffer);
if (!dos_drive_prefix)
return error("'%s': invalid drive letter", Buffer);
memcpy(szVolumeAccessPath, Buffer, dos_drive_prefix);
szVolumeAccessPath[dos_drive_prefix] = '\0';
szVolumeAccessPath[4] = Buffer[0];
hVolWrite = CreateFile(szVolumeAccessPath, GENERIC_READ | GENERIC_WRITE,
FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL);
if (INVALID_HANDLE_VALUE == hVolWrite)