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Commit eea2c05d authored by Sascha Hauer's avatar Sascha Hauer Committed by Richard Weinberger
Browse files

ubifs: Remove #ifdef around CONFIG_FS_ENCRYPTION 



ifdefs reduce readablity and compile coverage. This removes the ifdefs
around CONFIG_FS_ENCRYPTION by using IS_ENABLED and relying on static
inline wrappers. A new static inline wrapper for setting sb->s_cop is
introduced to allow filesystems to unconditionally compile in their
s_cop operations.

Signed-off-by: default avatarSascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: default avatarRichard Weinberger <richard@nod.at>
parent 9ca2d732

fs/ubifs/ioctl.c

+0 −4
Original line number Diff line number Diff line
@@ -193,7 +193,6 @@ long ubifs_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 
		return err;

	}

	case FS_IOC_SET_ENCRYPTION_POLICY: {

#ifdef CONFIG_FS_ENCRYPTION

		struct ubifs_info *c = inode->i_sb->s_fs_info;



		err = ubifs_enable_encryption(c);
@@ -201,9 +200,6 @@ long ubifs_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 
			return err;



		return fscrypt_ioctl_set_policy(file, (const void __user *)arg);

#else

		return -EOPNOTSUPP;

#endif

	}

	case FS_IOC_GET_ENCRYPTION_POLICY:

		return fscrypt_ioctl_get_policy(file, (void __user *)arg);

fs/ubifs/sb.c

+4 −3
Original line number Diff line number Diff line
@@ -748,14 +748,12 @@ int ubifs_read_superblock(struct ubifs_info *c) 
		goto out;

	}



#ifndef CONFIG_FS_ENCRYPTION

	if (c->encrypted) {

	if (!IS_ENABLED(CONFIG_UBIFS_FS_ENCRYPTION) && c->encrypted) {

		ubifs_err(c, "file system contains encrypted files but UBIFS"

			     " was built without crypto support.");

		err = -EINVAL;

		goto out;

	}

#endif



	/* Automatically increase file system size to the maximum size */

	c->old_leb_cnt = c->leb_cnt;
@@ -943,6 +941,9 @@ int ubifs_enable_encryption(struct ubifs_info *c) 
	int err;

	struct ubifs_sb_node *sup = c->sup_node;



	if (!IS_ENABLED(CONFIG_UBIFS_FS_ENCRYPTION))

		return -EOPNOTSUPP;



	if (c->encrypted)

		return 0;

fs/ubifs/super.c

+1 −3
Original line number Diff line number Diff line
@@ -2146,9 +2146,7 @@ static int ubifs_fill_super(struct super_block *sb, void *data, int silent) 
#ifdef CONFIG_UBIFS_FS_XATTR

	sb->s_xattr = ubifs_xattr_handlers;

#endif

#ifdef CONFIG_FS_ENCRYPTION

	sb->s_cop = &ubifs_crypt_operations;

#endif

	fscrypt_set_ops(sb, &ubifs_crypt_operations);



	mutex_lock(&c->umount_mutex);

	err = mount_ubifs(c);

include/linux/fscrypt.h

+11 −0
Original line number Diff line number Diff line
@@ -230,6 +230,11 @@ extern int __fscrypt_encrypt_symlink(struct inode *inode, const char *target, 
extern const char *fscrypt_get_symlink(struct inode *inode, const void *caddr,

				       unsigned int max_size,

				       struct delayed_call *done);

static inline void fscrypt_set_ops(struct super_block *sb,

				   const struct fscrypt_operations *s_cop)

{

	sb->s_cop = s_cop;

}

#else  /* !CONFIG_FS_ENCRYPTION */



static inline bool fscrypt_has_encryption_key(const struct inode *inode)
@@ -446,6 +451,12 @@ static inline const char *fscrypt_get_symlink(struct inode *inode, 
{

	return ERR_PTR(-EOPNOTSUPP);

}



static inline void fscrypt_set_ops(struct super_block *sb,

				   const struct fscrypt_operations *s_cop)

{

}



#endif	/* !CONFIG_FS_ENCRYPTION */



/**