From cddf8a2c4a8286ae60fc866eab59c8bc524e93a0 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Sat, 23 May 2020 09:30:13 +0200 Subject: fs: move fiemap range validation into the file systems instances Replace fiemap_check_flags with a fiemap_prep helper that also takes the inode and mapped range, and performs the sanity check and truncation previously done in fiemap_check_range. This way the validation is inside the file system itself and thus properly works for the stacked overlayfs case as well. Signed-off-by: Christoph Hellwig Reviewed-by: Amir Goldstein Reviewed-by: Darrick J. Wong Link: https://lore.kernel.org/r/20200523073016.2944131-7-hch@lst.de Signed-off-by: Theodore Ts'o --- fs/cifs/smb2ops.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'fs/cifs/smb2ops.c') diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index 09047f1ddfb6..828e53e795c6 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -3408,8 +3408,10 @@ static int smb3_fiemap(struct cifs_tcon *tcon, int i, num, rc, flags, last_blob; u64 next; - if (fiemap_check_flags(fei, FIEMAP_FLAG_SYNC)) - return -EBADR; + rc = fiemap_prep(d_inode(cfile->dentry), fei, start, &len, + FIEMAP_FLAG_SYNC); + if (rc) + return rc; xid = get_xid(); again: -- cgit v1.2.3