[PATCH v10 39/46] ext4: Don't allow unmapped identifiers in richacls
From: Andreas Gruenbacher <hidden>
Date: 2015-10-11 22:58:50
Also in:
linux-cifs, linux-ext4, linux-fsdevel, linux-nfs, linux-xfs, lkml
Subsystem:
ext4 file system, filesystems (vfs and infrastructure), the rest · Maintainers:
"Theodore Ts'o", Alexander Viro, Christian Brauner, Linus Torvalds
From: Andreas Gruenbacher <agruenba@redhat.com> Don't allow acls which contain unmapped identifiers: they are meaningful for remote file systems only. Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com> --- fs/ext4/richacl.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/fs/ext4/richacl.c b/fs/ext4/richacl.c
index b46ac60..2581117 100644
--- a/fs/ext4/richacl.c
+++ b/fs/ext4/richacl.c@@ -62,6 +62,10 @@ __ext4_set_richacl(handle_t *handle, struct inode *inode, struct richacl *acl) int retval; if (acl) { + /* Don't allow acls with unmapped identifiers. */ + if (richacl_has_unmapped_identifiers(acl)) + return -EINVAL; + if (richacl_equiv_mode(acl, &mode) == 0) { inode->i_ctime = ext4_current_time(inode); inode->i_mode = mode;
--
2.5.0
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