[PATCH v4 2/2] ntdll/server: Mark drive_c as case-insensitive when created

[Gabriel Ivăncescu]

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=47099
Signed-off-by: Gabriel Ivăncescu <gabrielopcode at gmail.com>
---
 dlls/ntdll/server.c | 45 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)

diff --git a/dlls/ntdll/server.c b/dlls/ntdll/server.c
index 094b530..7dff7c1 100644
--- a/dlls/ntdll/server.c
+++ b/dlls/ntdll/server.c
@@ -51,6 +51,12 @@
 #ifdef HAVE_SYS_MMAN_H
 #include <sys/mman.h>
 #endif
+#ifdef HAVE_SYS_IOCTL_H
+#include <sys/ioctl.h>
+#endif
+#ifdef HAVE_LINUX_IOCTL_H
+#include <linux/ioctl.h>
+#endif
 #ifdef HAVE_SYS_PRCTL_H
 # include <sys/prctl.h>
 #endif
@@ -84,6 +90,22 @@
 
 WINE_DEFAULT_DEBUG_CHANNEL(server);
 
+/* just in case... */
+#undef EXT2_IOC_GETFLAGS
+#undef EXT2_IOC_SETFLAGS
+#undef EXT4_CASEFOLD_FL
+
+#ifdef __linux__
+
+/* Define the ext2 ioctls for handling extra attributes */
+#define EXT2_IOC_GETFLAGS _IOR('f', 1, long)
+#define EXT2_IOC_SETFLAGS _IOW('f', 2, long)
+
+/* Case-insensitivity attribute */
+#define EXT4_CASEFOLD_FL 0x40000000
+
+#endif
+
 /* Some versions of glibc don't define this */
 #ifndef SCM_RIGHTS
 #define SCM_RIGHTS 1
@@ -1119,6 +1141,28 @@ static void start_server(void)
 }
 
 
+/***********************************************************************
+ *           set_case_insensitive
+ *
+ * Make the supplied directory case insensitive, if possible.
+ */
+static void set_case_insensitive(const char *dir)
+{
+#ifdef EXT4_CASEFOLD_FL
+    int flags, fd;
+
+    if ((fd = open(dir, O_RDONLY | O_NONBLOCK | O_LARGEFILE)) == -1)
+        return;
+    if (ioctl(fd, EXT2_IOC_GETFLAGS, &flags) != -1 && !(flags & EXT4_CASEFOLD_FL))
+    {
+        flags |= EXT4_CASEFOLD_FL;
+        ioctl(fd, EXT2_IOC_SETFLAGS, &flags);
+    }
+    close(fd);
+#endif
+}
+
+
 /***********************************************************************
  *           setup_config_dir
  *
@@ -1162,6 +1206,7 @@ static int setup_config_dir(void)
     /* create the drive symlinks */
 
     mkdir( "drive_c", 0777 );
+    set_case_insensitive( "drive_c" );
     symlink( "../drive_c", "dosdevices/c:" );
     symlink( "/", "dosdevices/z:" );
 
-- 
2.21.0