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authorMasami Hiramatsu <mhiramat@kernel.org>2020-02-21 17:13:42 +0900
committerSteven Rostedt (VMware) <rostedt@goodmis.org>2020-02-21 09:59:19 -0500
commit4e4694d8729f7cd6381f6691e8f83e378fce3160 (patch)
treeb7c07e9ddd7681384ee330e6f8c64273c3ed52ec /lib
parentbootconfig: Print array as multiple commands for legacy command line (diff)
downloadlinux-dev-4e4694d8729f7cd6381f6691e8f83e378fce3160.tar.xz
linux-dev-4e4694d8729f7cd6381f6691e8f83e378fce3160.zip
bootconfig: Prohibit re-defining value on same key
Currently, bootconfig adds a new value on the existing key to the tail of an array. But this looks a bit confusing because an admin can easily rewrite the original value in the same config file. This rejects the following value re-definition. key = value1 ... key = value2 You should rewrite value1 to value2 in this case. Link: http://lkml.kernel.org/r/158227282199.12842.10110929876059658601.stgit@devnote2 Suggested-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> [ Fixed spelling of arraies to arrays ] Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'lib')
-rw-r--r--lib/bootconfig.c13
1 files changed, 8 insertions, 5 deletions
diff --git a/lib/bootconfig.c b/lib/bootconfig.c
index 54ac623ca781..2ef304db31f2 100644
--- a/lib/bootconfig.c
+++ b/lib/bootconfig.c
@@ -581,7 +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, *child;
+ struct xbc_node *child;
char *next;
int c, ret;
@@ -590,15 +590,18 @@ static int __init xbc_parse_kv(char **k, char *v)
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);
+ if (child) {
+ if (xbc_node_is_key(child))
+ return xbc_parse_error("Value is mixed with subkey", v);
+ else
+ return xbc_parse_error("Value is redefined", v);
+ }
c = __xbc_parse_value(&v, &next);
if (c < 0)
return c;
- node = xbc_add_sibling(v, XBC_VALUE);
- if (!node)
+ if (!xbc_add_sibling(v, XBC_VALUE))
return -ENOMEM;
if (c == ',') { /* Array */