[dpdk-dev] [PATCH 07/11] kvargs: be strict when matching a key
Richardson, Bruce
bruce.richardson at intel.com
Thu Jan 30 12:23:42 CET 2014
> -----Original Message-----
> From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Olivier Matz
> Sent: Tuesday, January 28, 2014 4:07 PM
> To: dev at dpdk.org
> Subject: [dpdk-dev] [PATCH 07/11] kvargs: be strict when matching a key
>
> When we match a key in is_valid_key() and rte_kvargs_process(), do a strict
> comparison (strcmp()) instead of using strstr(s1, s2) which tries a find s1 in
> s2. This old behavior could lead to unexpected match, for instance "cola"
> match "chocolate".
>
> Surprisingly, no patch was needed on rte_kvargs_count() as it already used
> strcmp().
>
> Signed-off-by: Olivier Matz <olivier.matz at 6wind.com>
> ---
> lib/librte_kvargs/rte_kvargs.c | 7 ++++---
> 1 file changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/lib/librte_kvargs/rte_kvargs.c b/lib/librte_kvargs/rte_kvargs.c
> index 6aaa316..73034fc 100644
> --- a/lib/librte_kvargs/rte_kvargs.c
> +++ b/lib/librte_kvargs/rte_kvargs.c
> @@ -94,9 +94,10 @@ is_valid_key(const char *valid[], const char
> *key_match) {
> const char **valid_ptr;
>
> - for (valid_ptr = valid; *valid_ptr != NULL; valid_ptr++)
> - if (strstr(key_match, *valid_ptr) != NULL)
> + for (valid_ptr = valid; *valid_ptr != NULL; valid_ptr++) {
> + if (strcmp(key_match, *valid_ptr) == 0)
> return 1;
> + }
> return 0;
> }
>
> @@ -159,7 +160,7 @@ rte_kvargs_process(const struct rte_kvargs *kvlist,
>
> for (i = 0; i < kvlist->count; i++) {
> pair = &kvlist->pairs[i];
> - if (strstr(pair->key, key_match) != NULL) {
> + if (strcmp(pair->key, key_match) == 0) {
> if ((*handler)(pair->value, opaque_arg) < 0)
> return -1;
> }
> --
> 1.8.4.rc3
Acked-by: Bruce Richardson <bruce.richardson at intel.com>
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