Unverified Commit 5bfb91c7 authored by Konstantin Komarov's avatar Konstantin Komarov
Browse files

fs/ntfs3: Implement simple fileattr 



fileattr added to support chattr.
Supported attributes:  compressed and immutable.

Signed-off-by: default avatarKonstantin Komarov <almaz.alexandrovich@paragon-software.com>
parent 1ff2e956

fs/ntfs3/file.c

+71 −5
Original line number Diff line number Diff line
@@ -13,6 +13,7 @@ 
#include <linux/compat.h>

#include <linux/falloc.h>

#include <linux/fiemap.h>

#include <linux/fileattr.h>



#include "debug.h"

#include "ntfs.h"
@@ -48,6 +49,62 @@ static int ntfs_ioctl_fitrim(struct ntfs_sb_info *sbi, unsigned long arg) 
	return 0;

}



/*

 * ntfs_fileattr_get - inode_operations::fileattr_get

 */

int ntfs_fileattr_get(struct dentry *dentry, struct fileattr *fa)

{

	struct inode *inode = d_inode(dentry);

	struct ntfs_inode *ni = ntfs_i(inode);

	u32 flags = 0;



	if (inode->i_flags & S_IMMUTABLE)

		flags |= FS_IMMUTABLE_FL;



	if (inode->i_flags & S_APPEND)

		flags |= FS_APPEND_FL;



	if (is_compressed(ni))

		flags |= FS_COMPR_FL;



	if (is_encrypted(ni))

		flags |= FS_ENCRYPT_FL;



	fileattr_fill_flags(fa, flags);



	return 0;

}



/*

 * ntfs_fileattr_set - inode_operations::fileattr_set

 */

int ntfs_fileattr_set(struct mnt_idmap *idmap, struct dentry *dentry,

		      struct fileattr *fa)

{

	struct inode *inode = d_inode(dentry);

	u32 flags = fa->flags;

	unsigned int new_fl = 0;



	if (fileattr_has_fsx(fa))

		return -EOPNOTSUPP;



	if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL))

		return -EOPNOTSUPP;



	if (flags & FS_IMMUTABLE_FL)

		new_fl |= S_IMMUTABLE;



	if (flags & FS_APPEND_FL)

		new_fl |= S_APPEND;



	inode_set_flags(inode, new_fl, S_IMMUTABLE | S_APPEND);



	inode_set_ctime_current(inode);

	mark_inode_dirty(inode);



	return 0;

}



long ntfs_ioctl(struct file *filp, u32 cmd, unsigned long arg)

{

	struct inode *inode = file_inode(filp);
@@ -77,20 +134,27 @@ int ntfs_getattr(struct mnt_idmap *idmap, const struct path *path, 
	struct inode *inode = d_inode(path->dentry);

	struct ntfs_inode *ni = ntfs_i(inode);



	stat->result_mask |= STATX_BTIME;

	stat->btime = ni->i_crtime;

	stat->blksize = ni->mi.sbi->cluster_size; /* 512, 1K, ..., 2M */



	if (inode->i_flags & S_IMMUTABLE)

		stat->attributes |= STATX_ATTR_IMMUTABLE;



	if (inode->i_flags & S_APPEND)

		stat->attributes |= STATX_ATTR_APPEND;



	if (is_compressed(ni))

		stat->attributes |= STATX_ATTR_COMPRESSED;



	if (is_encrypted(ni))

		stat->attributes |= STATX_ATTR_ENCRYPTED;



	stat->attributes_mask |= STATX_ATTR_COMPRESSED | STATX_ATTR_ENCRYPTED;

	stat->attributes_mask |= STATX_ATTR_COMPRESSED | STATX_ATTR_ENCRYPTED |

				 STATX_ATTR_IMMUTABLE | STATX_ATTR_APPEND;



	generic_fillattr(idmap, request_mask, inode, stat);



	stat->result_mask |= STATX_BTIME;

	stat->btime = ni->i_crtime;

	stat->blksize = ni->mi.sbi->cluster_size; /* 512, 1K, ..., 2M */



	return 0;

}
@@ -1223,6 +1287,8 @@ const struct inode_operations ntfs_file_inode_operations = { 
	.get_acl	= ntfs_get_acl,

	.set_acl	= ntfs_set_acl,

	.fiemap		= ntfs_fiemap,

	.fileattr_get	= ntfs_fileattr_get,

	.fileattr_set	= ntfs_fileattr_set,

};



const struct file_operations ntfs_file_operations = {

fs/ntfs3/namei.c

+2 −0
Original line number Diff line number Diff line
@@ -509,6 +509,8 @@ const struct inode_operations ntfs_dir_inode_operations = { 
	.getattr	= ntfs_getattr,

	.listxattr	= ntfs_listxattr,

	.fiemap		= ntfs_fiemap,

	.fileattr_get	= ntfs_fileattr_get,

	.fileattr_set	= ntfs_fileattr_set,

};



const struct inode_operations ntfs_special_inode_operations = {

fs/ntfs3/ntfs_fs.h

+3 −0
Original line number Diff line number Diff line
@@ -497,6 +497,9 @@ extern const struct file_operations ntfs_dir_operations; 
extern const struct file_operations ntfs_legacy_dir_operations;



/* Globals from file.c */

int ntfs_fileattr_get(struct dentry *dentry, struct fileattr *fa);

int ntfs_fileattr_set(struct mnt_idmap *idmap, struct dentry *dentry,

		      struct fileattr *fa);

int ntfs_getattr(struct mnt_idmap *idmap, const struct path *path,

		 struct kstat *stat, u32 request_mask, u32 flags);

int ntfs3_setattr(struct mnt_idmap *idmap, struct dentry *dentry,