[dpdk-dev] [PATCH v3 4/4] cfgfile: check flags value

[Stephen Hemminger]

All API's should check that they support the flag values
passed. If an application passes an invalid flag it could
cause problems in later ABI.

Signed-off-by: Stephen Hemminger <step...@networkplumber.org>
---
 lib/librte_cfgfile/rte_cfgfile.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/librte_cfgfile/rte_cfgfile.c b/lib/librte_cfgfile/rte_cfgfile.c
index 9049fd9c2319..714717dd9007 100644
--- a/lib/librte_cfgfile/rte_cfgfile.c
+++ b/lib/librte_cfgfile/rte_cfgfile.c
@@ -272,6 +272,10 @@ rte_cfgfile_create(int flags)
        int i;
        struct rte_cfgfile *cfg;
 
+       /* future proof flags usage */
+       if (flags & ~(CFG_FLAG_GLOBAL_SECTION | CFG_FLAG_EMPTY_VALUES))
+               return NULL;
+
        cfg = malloc(sizeof(*cfg));
 
        if (cfg == NULL)
-- 
2.20.1