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| author | Masami Hiramatsu <mhiramat@kernel.org> | 2020-02-20 21:19:12 +0900 |
|---|---|---|
| committer | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2020-02-20 17:54:09 -0500 |
| commit | a24d286f36104ed45108a5a36f3868938434772f (patch) | |
| tree | 9216a8d32db02443cdb17d15a2695d39c367a090 /lib/bootconfig.c | |
| parent | 15e95037b45f24f9ab6d4f0bd101d4df0be24c1d (diff) | |
| download | lwn-a24d286f36104ed45108a5a36f3868938434772f.tar.gz lwn-a24d286f36104ed45108a5a36f3868938434772f.zip | |
bootconfig: Reject subkey and value on same parent key
Reject if a value node is mixed with subkey node on same
parent key node.
A value node can not co-exist with subkey node under some key
node, e.g.
key = value
key.subkey = another-value
This is not be allowed because bootconfig API is not designed
to handle such case.
Link: http://lkml.kernel.org/r/158220115232.26565.7792340045009731803.stgit@devnote2
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'lib/bootconfig.c')
| -rw-r--r-- | lib/bootconfig.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/lib/bootconfig.c b/lib/bootconfig.c index 3ea601a2eba5..54ac623ca781 100644 --- a/lib/bootconfig.c +++ b/lib/bootconfig.c @@ -533,7 +533,7 @@ struct xbc_node *find_match_node(struct xbc_node *node, char *k) static int __init __xbc_add_key(char *k) { - struct xbc_node *node; + struct xbc_node *node, *child; if (!xbc_valid_keyword(k)) return xbc_parse_error("Invalid keyword", k); @@ -543,8 +543,12 @@ static int __init __xbc_add_key(char *k) if (!last_parent) /* the first level */ node = find_match_node(xbc_nodes, k); - else - node = find_match_node(xbc_node_get_child(last_parent), k); + else { + child = xbc_node_get_child(last_parent); + if (child && xbc_node_is_value(child)) + return xbc_parse_error("Subkey is mixed with value", k); + node = find_match_node(child, k); + } if (node) last_parent = node; @@ -577,7 +581,7 @@ static int __init __xbc_parse_keys(char *k) static int __init xbc_parse_kv(char **k, char *v) { struct xbc_node *prev_parent = last_parent; - struct xbc_node *node; + struct xbc_node *node, *child; char *next; int c, ret; @@ -585,6 +589,10 @@ static int __init xbc_parse_kv(char **k, char *v) if (ret) return ret; + child = xbc_node_get_child(last_parent); + if (child && xbc_node_is_key(child)) + return xbc_parse_error("Value is mixed with subkey", v); + c = __xbc_parse_value(&v, &next); if (c < 0) return c; |