From 8a4ef7e28abade861d894e25b167988c5b8977a7 Mon Sep 17 00:00:00 2001 From: Hongbo Li Date: Mon, 3 Jun 2024 21:26:18 +0800 Subject: 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: Hongbo Li Signed-off-by: Kent Overstreet --- fs/bcachefs/fs-ioctl.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/fs/bcachefs/fs-ioctl.c b/fs/bcachefs/fs-ioctl.c index 79a0c8732bce..add90172b475 100644 --- a/fs/bcachefs/fs-ioctl.c +++ b/fs/bcachefs/fs-ioctl.c @@ -272,6 +272,11 @@ err1: 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; } -- cgit v1.2.3