Unverified Commit 0d19f3d7 authored by Daniel Pinto's avatar Daniel Pinto Committed by Konstantin Komarov
Browse files

fs/ntfs3: Add system.ntfs_attrib_be extended attribute 



NTFS-3G provides the system.ntfs_attrib_be extended attribute, which
has the same value as system.ntfs_attrib but represented in big-endian.
Some utilities rely on the existence of this extended attribute.

Improves compatibility with NTFS-3G by adding the system.ntfs_attrib_be
extended attribute.

Signed-off-by: default avatarDaniel Pinto <danielpinto52@gmail.com>
Signed-off-by: default avatarKonstantin Komarov <almaz.alexandrovich@paragon-software.com>
parent dc0fcc99

fs/ntfs3/xattr.c

+14 −6
Original line number Diff line number Diff line
@@ -17,6 +17,7 @@ 
// clang-format off

#define SYSTEM_DOS_ATTRIB     "system.dos_attrib"

#define SYSTEM_NTFS_ATTRIB    "system.ntfs_attrib"

#define SYSTEM_NTFS_ATTRIB_BE "system.ntfs_attrib_be"

#define SYSTEM_NTFS_SECURITY  "system.ntfs_security"

// clang-format on
@@ -796,7 +797,8 @@ static int ntfs_getxattr(const struct xattr_handler *handler, struct dentry *de, 
		goto out;

	}



	if (!strcmp(name, SYSTEM_NTFS_ATTRIB)) {

	if (!strcmp(name, SYSTEM_NTFS_ATTRIB) ||

	    !strcmp(name, SYSTEM_NTFS_ATTRIB_BE)) {

		/* system.ntfs_attrib */

		if (!buffer) {

			err = sizeof(u32);
@@ -805,6 +807,8 @@ static int ntfs_getxattr(const struct xattr_handler *handler, struct dentry *de, 
		} else {

			err = sizeof(u32);

			*(u32 *)buffer = le32_to_cpu(ni->std_fa);

			if (!strcmp(name, SYSTEM_NTFS_ATTRIB_BE))

				*(u32 *)buffer = cpu_to_be32(*(u32 *)buffer);

		}

		goto out;

	}
@@ -889,9 +893,13 @@ static noinline int ntfs_setxattr(const struct xattr_handler *handler, 
		goto set_new_fa;

	}



	if (!strcmp(name, SYSTEM_NTFS_ATTRIB)) {

	if (!strcmp(name, SYSTEM_NTFS_ATTRIB) ||

	    !strcmp(name, SYSTEM_NTFS_ATTRIB_BE)) {

		if (size != sizeof(u32))

			goto out;

		if (!strcmp(name, SYSTEM_NTFS_ATTRIB_BE))

			new_fa = cpu_to_le32(be32_to_cpu(*(u32 *)value));

		else

			new_fa = cpu_to_le32(*(u32 *)value);



		if (S_ISREG(inode->i_mode)) {