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ntdll: Add support for EXT4 per directory case folding.

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Signed-off-by: Gabriel Ivăncescu <gabrielopcode@gmail.com>
Signed-off-by: Huw Davies <huw@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Gabriel Ivăncescu 2019-06-14 10:07:43 +01:00 committed by Alexandre Julliard
parent ac0c1d41d1
commit 0639d182e5
1 changed files with 25 additions and 22 deletions
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47
dlls/ntdll/directory.c
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@ -115,6 +115,8 @@ WINE_DEFAULT_DEBUG_CHANNEL(file);
/* just in case... */
#undef VFAT_IOCTL_READDIR_BOTH
#undef EXT2_IOC_GETFLAGS
#undef EXT4_CASEFOLD_FL
#ifdef linux
@ -130,6 +132,12 @@ typedef struct
/* Define the VFAT ioctl to get both short and long file names */
#define VFAT_IOCTL_READDIR_BOTH _IOR('r', 1, KERNEL_DIRENT [2] )
/* Define the ext2 ioctl for handling extra attributes */
#define EXT2_IOC_GETFLAGS _IOR('f', 1, long)
/* Case-insensitivity attribute */
#define EXT4_CASEFOLD_FL 0x40000000
#ifndef O_DIRECTORY
# define O_DIRECTORY 0200000 /* must be directory */
#endif
@ -1113,7 +1121,7 @@ static int get_dir_case_sensitivity_attr( const char *dir )
* get_dir_case_sensitivity_stat
*
* Checks if the volume containing the specified directory is case
* sensitive or not. Uses statfs(2) or statvfs(2).
* sensitive or not. Uses (f)statfs(2), statvfs(2), fstatat(2), or ioctl(2).
*/
static BOOLEAN get_dir_case_sensitivity_stat( const char *dir )
{
@ -1165,32 +1173,27 @@ static BOOLEAN get_dir_case_sensitivity_stat( const char *dir )
return FALSE;
#elif defined(__linux__)
BOOLEAN sens = TRUE;
struct statfs stfs;
struct stat st;
char *cifile;
int fd, flags;
/* Only assume CIOPFS is case insensitive. */
if (statfs( dir, &stfs ) == -1) return FALSE;
if (stfs.f_type != 0x65735546 /* FUSE_SUPER_MAGIC */)
if ((fd = open( dir, O_RDONLY | O_NONBLOCK | O_LARGEFILE )) == -1)
return TRUE;
/* Normally, we'd have to parse the mtab to find out exactly what
* kind of FUSE FS this is. But, someone on wine-devel suggested
* a shortcut. We'll stat a special file in the directory. If it's
* there, we'll assume it's a CIOPFS, else not.
* This will break if somebody puts a file named ".ciopfs" in a non-
* CIOPFS directory.
*/
cifile = RtlAllocateHeap( GetProcessHeap(), 0, strlen( dir )+sizeof("/.ciopfs") );
if (!cifile) return TRUE;
strcpy( cifile, dir );
strcat( cifile, "/.ciopfs" );
if (stat( cifile, &st ) == 0)
if (ioctl( fd, EXT2_IOC_GETFLAGS, &flags ) != -1 && (flags & EXT4_CASEFOLD_FL))
{
RtlFreeHeap( GetProcessHeap(), 0, cifile );
return FALSE;
sens = FALSE;
}
RtlFreeHeap( GetProcessHeap(), 0, cifile );
return TRUE;
else if (fstatfs( fd, &stfs ) == 0 && /* CIOPFS is case insensitive. Instead of */
stfs.f_type == 0x65735546 /* FUSE_SUPER_MAGIC */ && /* parsing mtab to discover if the FUSE FS */
fstatat( fd, ".ciopfs", &st, AT_NO_AUTOMOUNT ) == 0) /* is CIOPFS, look for .ciopfs in the dir. */
{
sens = FALSE;
}
close( fd );
return sens;
#else
return TRUE;
#endif
@ -1201,7 +1204,7 @@ static BOOLEAN get_dir_case_sensitivity_stat( const char *dir )
* get_dir_case_sensitivity
*
* Checks if the volume containing the specified directory is case
* sensitive or not. Uses statfs(2) or statvfs(2).
* sensitive or not. Uses multiple methods, depending on platform.
*/
static BOOLEAN get_dir_case_sensitivity( const char *dir )
{