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| author | Masami Hiramatsu <mhiramat@kernel.org> | 2020-02-21 17:13:42 +0900 |
|---|---|---|
| committer | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2020-02-21 09:59:19 -0500 |
| commit | 4e4694d8729f7cd6381f6691e8f83e378fce3160 (patch) | |
| tree | b7c07e9ddd7681384ee330e6f8c64273c3ed52ec /lib/bootconfig.c | |
| parent | 88b913718db94697497028b85acbec8b180a4333 (diff) | |
| download | linux-4e4694d8729f7cd6381f6691e8f83e378fce3160.tar.gz linux-4e4694d8729f7cd6381f6691e8f83e378fce3160.tar.bz2 linux-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/bootconfig.c')
| -rw-r--r-- | lib/bootconfig.c | 13 |
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 */ |