eal: fix config file path when checking process

When primary process is booted with --file-prefix option, the API,
rte_eal_primary_proc_alive(), uses a wrong config file path to
check if primary process is alive.

Fix it by calling helper function to get config file path.

Fixes: dd3e00138d74 ("eal: check if primary process is alive")
Cc: stable@dpdk.org
Signed-off-by: Jianfeng Tan <jianfeng.tan@intel.com>

diff --git a/lib/librte_eal/common/eal_common_proc.c b/lib/librte_eal/common/eal_common_proc.c
index 12e0fca..60526ca 100644 (file)
--- a/lib/librte_eal/common/eal_common_proc.c
+++ b/lib/librte_eal/common/eal_common_proc.c
@@ -46,10 +46,10 @@ rte_eal_primary_proc_alive(const char *config_file_path)
        if (config_file_path)
                config_fd = open(config_file_path, O_RDONLY);
        else {
-               char default_path[PATH_MAX+1];
-               snprintf(default_path, PATH_MAX, RUNTIME_CONFIG_FMT,
-                        default_config_dir, "rte");
-               config_fd = open(default_path, O_RDONLY);
+               const char *path;
+
+               path = eal_runtime_config_path();
+               config_fd = open(path, O_RDONLY);
        }
        if (config_fd < 0)
                return 0;