From 398c35f4d78410725e154c2fc0a51ecac05a3f1f Mon Sep 17 00:00:00 2001 From: Konstantin Komarov Date: Wed, 22 Sep 2021 18:33:38 +0300 Subject: [Backport 398c35f4d784] src: Pass flags to ntfs_set_ea in ntfs_set_acl_ex In case of removing of xattr there must be XATTR_REPLACE flag and zero length. We already check XATTR_REPLACE in ntfs_set_ea, so now we pass XATTR_REPLACE to ntfs_set_ea. Reviewed-by: Kari Argillander Signed-off-by: Konstantin Komarov --- src/xattr.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/src/xattr.c b/src/xattr.c index 3795943efc8e36d64710d8467ce48ef72c2121cd..70f2f9eb6b1eb3e7bebc3703762abfb7e42d7be1 100644 --- a/src/xattr.c +++ b/src/xattr.c @@ -549,6 +549,7 @@ static noinline int ntfs_set_acl_ex(struct user_namespace *mnt_userns, size_t size, name_len; void *value = NULL; int err = 0; + int flags; if (S_ISLNK(inode->i_mode)) return -EOPNOTSUPP; @@ -591,20 +592,24 @@ static noinline int ntfs_set_acl_ex(struct user_namespace *mnt_userns, } if (!acl) { + /* Remove xattr if it can be presented via mode. */ size = 0; value = NULL; + flags = XATTR_REPLACE; } else { size = posix_acl_xattr_size(acl->a_count); value = kmalloc(size, GFP_NOFS); if (!value) return -ENOMEM; - err = posix_acl_to_xattr(mnt_userns, acl, value, size); if (err < 0) goto out; + flags = 0; } - err = ntfs_set_ea(inode, name, name_len, value, size, 0, locked); + err = ntfs_set_ea(inode, name, name_len, value, size, flags, locked); + if (err == -ENODATA && !size) + err = 0; /* Removing non existed xattr. */ if (!err) set_cached_acl(inode, type, acl); -- 2.31.1