Commit 8a4ef7e2 authored by Hongbo Li's avatar Hongbo Li Committed by Kent Overstreet
Browse files

bcachefs: implement FS_IOC_GETVERSION to support lsattr 



In this patch we add the FS_IOC_GETVERSION ioctl for getting
i_generation from inode, after that, users can list file's
generation number by using "lsattr".

Signed-off-by: default avatarHongbo Li <lihongbo22@huawei.com>
Signed-off-by: default avatarKent Overstreet <kent.overstreet@linux.dev>
parent 889fb3dc

fs/bcachefs/fs-ioctl.c

+9 −1
Original line number Diff line number Diff line
@@ -272,6 +272,11 @@ static int bch2_ioc_reinherit_attrs(struct bch_fs *c, 
	return ret;

}



static int bch2_ioc_getversion(struct bch_inode_info *inode, u32 __user *arg)

{

	return put_user(inode->v.i_generation, arg);

}



static int bch2_ioc_goingdown(struct bch_fs *c, u32 __user *arg)

{

	u32 flags;
@@ -499,7 +504,7 @@ long bch2_fs_file_ioctl(struct file *file, unsigned cmd, unsigned long arg) 
		break;



	case FS_IOC_GETVERSION:

		ret = -ENOTTY;

		ret = bch2_ioc_getversion(inode, (u32 __user *) arg);

		break;



	case FS_IOC_SETVERSION:
@@ -547,6 +552,9 @@ long bch2_compat_fs_ioctl(struct file *file, unsigned cmd, unsigned long arg) 
	case FS_IOC32_SETFLAGS:

		cmd = FS_IOC_SETFLAGS;

		break;

	case FS_IOC32_GETVERSION:

		cmd = FS_IOC_GETVERSION;

		break;

	default:

		return -ENOIOCTLCMD;

	}