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Commit 7e5471ce authored by Stefan Agner's avatar Stefan Agner Committed by Richard Weinberger
Browse files

ubifs: introduce Kconfig symbol for xattr support 



Allow to disable extended attribute support.

This aids in reliability testing, especially since some xattr
related bugs have surfaced.

Also an embedded system might not need it, so this allows for a
slightly smaller kernel (about 4KiB).

Signed-off-by: default avatarStefan Agner <stefan@agner.ch>
Signed-off-by: default avatarRichard Weinberger <richard@nod.at>
parent 1bf0572f

fs/ubifs/Kconfig

+13 −2
Original line number Diff line number Diff line
@@ -51,9 +51,20 @@ config UBIFS_ATIME_SUPPORT 


	  If unsure, say 'N'



config UBIFS_FS_XATTR

	bool "UBIFS XATTR support"

	depends on UBIFS_FS

	default y

	help

	  Saying Y here includes support for extended attributes (xattrs).

	  Xattrs are name:value pairs associated with inodes by

	  the kernel or by users (see the attr(5) manual page).



	  If unsure, say Y.



config UBIFS_FS_ENCRYPTION

	bool "UBIFS Encryption"

	depends on UBIFS_FS && BLOCK

	depends on UBIFS_FS && UBIFS_FS_XATTR && BLOCK

	select FS_ENCRYPTION

	default n

	help
@@ -64,7 +75,7 @@ config UBIFS_FS_ENCRYPTION 


config UBIFS_FS_SECURITY

	bool "UBIFS Security Labels"

	depends on UBIFS_FS

	depends on UBIFS_FS && UBIFS_FS_XATTR

	default y

	help

	  Security labels provide an access control facility to support Linux

fs/ubifs/Makefile

+2 −1
Original line number Diff line number Diff line
@@ -4,6 +4,7 @@ obj-$(CONFIG_UBIFS_FS) += ubifs.o 
ubifs-y += shrinker.o journal.o file.o dir.o super.o sb.o io.o

ubifs-y += tnc.o master.o scan.o replay.o log.o commit.o gc.o orphan.o

ubifs-y += budget.o find.o tnc_commit.o compress.o lpt.o lprops.o

ubifs-y += recovery.o ioctl.o lpt_commit.o tnc_misc.o xattr.o debug.o

ubifs-y += recovery.o ioctl.o lpt_commit.o tnc_misc.o debug.o

ubifs-y += misc.o

ubifs-$(CONFIG_UBIFS_FS_ENCRYPTION) += crypto.o

ubifs-$(CONFIG_UBIFS_FS_XATTR) += xattr.o

fs/ubifs/dir.c

+2 −0
Original line number Diff line number Diff line
@@ -1648,7 +1648,9 @@ const struct inode_operations ubifs_dir_inode_operations = { 
	.rename      = ubifs_rename,

	.setattr     = ubifs_setattr,

	.getattr     = ubifs_getattr,

#ifdef CONFIG_UBIFS_FS_XATTR

	.listxattr   = ubifs_listxattr,

#endif

#ifdef CONFIG_UBIFS_ATIME_SUPPORT

	.update_time = ubifs_update_time,

#endif

fs/ubifs/file.c

+4 −0
Original line number Diff line number Diff line
@@ -1653,7 +1653,9 @@ const struct address_space_operations ubifs_file_address_operations = { 
const struct inode_operations ubifs_file_inode_operations = {

	.setattr     = ubifs_setattr,

	.getattr     = ubifs_getattr,

#ifdef CONFIG_UBIFS_FS_XATTR

	.listxattr   = ubifs_listxattr,

#endif

#ifdef CONFIG_UBIFS_ATIME_SUPPORT

	.update_time = ubifs_update_time,

#endif
@@ -1663,7 +1665,9 @@ const struct inode_operations ubifs_symlink_inode_operations = { 
	.get_link    = ubifs_get_link,

	.setattr     = ubifs_setattr,

	.getattr     = ubifs_getattr,

#ifdef CONFIG_UBIFS_FS_XATTR

	.listxattr   = ubifs_listxattr,

#endif

#ifdef CONFIG_UBIFS_ATIME_SUPPORT

	.update_time = ubifs_update_time,

#endif

fs/ubifs/super.c

+2 −0
Original line number Diff line number Diff line
@@ -2053,7 +2053,9 @@ static int ubifs_fill_super(struct super_block *sb, void *data, int silent) 
	if (c->max_inode_sz > MAX_LFS_FILESIZE)

		sb->s_maxbytes = c->max_inode_sz = MAX_LFS_FILESIZE;

	sb->s_op = &ubifs_super_operations;

#ifdef CONFIG_UBIFS_FS_XATTR

	sb->s_xattr = ubifs_xattr_handlers;

#endif

#ifdef CONFIG_UBIFS_FS_ENCRYPTION

	sb->s_cop = &ubifs_crypt_operations;

#endif