diff options
Diffstat (limited to 'fs/overlayfs/namei.c')
| -rw-r--r-- | fs/overlayfs/namei.c | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/fs/overlayfs/namei.c b/fs/overlayfs/namei.c index 76d6248b625e..e93bcc5727bc 100644 --- a/fs/overlayfs/namei.c +++ b/fs/overlayfs/namei.c @@ -239,13 +239,14 @@ static int ovl_lookup_single(struct dentry *base, struct ovl_lookup_data *d, char val; /* - * We allow filesystems that are case-folding capable but deny composing - * ovl stack from case-folded directories. If someone has enabled case - * folding on a directory on underlying layer, the warranty of the ovl - * stack is voided. + * We allow filesystems that are case-folding capable as long as the + * layers are consistently enabled in the stack, enabled for every dir + * or disabled in all dirs. If someone has modified case folding on a + * directory on underlying layer, the warranty of the ovl stack is + * voided. */ - if (ovl_dentry_casefolded(base)) { - warn = "case folded parent"; + if (ofs->casefold != ovl_dentry_casefolded(base)) { + warn = "parent wrong casefold"; err = -ESTALE; goto out_warn; } @@ -259,8 +260,8 @@ static int ovl_lookup_single(struct dentry *base, struct ovl_lookup_data *d, goto out_err; } - if (ovl_dentry_casefolded(this)) { - warn = "case folded child"; + if (ofs->casefold != ovl_dentry_casefolded(this)) { + warn = "child wrong casefold"; err = -EREMOTE; goto out_warn; } |