[PATCH v6 04/25] app/dma-perf: replace strtok with reentrant version

[Jie Hai]

Multiple threads calling the same function may cause condition
race issues, which often leads to abnormal behavior and can cause
more serious vulnerabilities such as abnormal termination, denial
of service, and compromised data integrity.

The strtok() is non-reentrant, it is better to replace it with a
reentrant version.

Fixes: 623dc9364dc6 ("app/dma-perf: introduce DMA performance test")

Signed-off-by: Jie Hai <haijie1 at huawei.com>
Acked-by: Chengwen Feng <fengchengwen at huawei.com>
---
 app/test-dma-perf/main.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/app/test-dma-perf/main.c b/app/test-dma-perf/main.c
index 0586b3e1d0dc..23c0981fc47b 100644
--- a/app/test-dma-perf/main.c
+++ b/app/test-dma-perf/main.c
@@ -18,6 +18,7 @@
 #include <rte_lcore.h>
 #include <rte_dmadev.h>
 #include <rte_kvargs.h>
+#include <rte_os_shim.h>
 
 #include "main.h"
 
@@ -183,6 +184,7 @@ parse_lcore(struct test_configure *test_case, const char *value)
 	uint16_t len;
 	char *input;
 	struct lcore_dma_map_t *lcore_dma_map;
+	char *sp = NULL;
 
 	if (test_case == NULL || value == NULL)
 		return -1;
@@ -191,7 +193,7 @@ parse_lcore(struct test_configure *test_case, const char *value)
 	input = (char *)malloc((len + 1) * sizeof(char));
 	strlcpy(input, value, len + 1);
 
-	char *token = strtok(input, ", ");
+	char *token = strtok_r(input, ", ", &sp);
 	while (token != NULL) {
 		lcore_dma_map = &(test_case->dma_config[test_case->num_worker++].lcore_dma_map);
 		memset(lcore_dma_map, 0, sizeof(struct lcore_dma_map_t));
@@ -203,7 +205,7 @@ parse_lcore(struct test_configure *test_case, const char *value)
 		uint16_t lcore_id = atoi(token);
 		lcore_dma_map->lcore = lcore_id;
 
-		token = strtok(NULL, ", ");
+		token = strtok_r(NULL, ", ", &sp);
 	}
 
 	free(input);
@@ -532,6 +534,7 @@ main(int argc, char *argv[])
 	char *rst_path_ptr = NULL;
 	char rst_path[PATH_MAX];
 	int new_argc;
+	char *sp = NULL;
 
 	memset(args, 0, sizeof(args));
 
@@ -550,7 +553,7 @@ main(int argc, char *argv[])
 	}
 	if (rst_path_ptr == NULL) {
 		strlcpy(rst_path, cfg_path_ptr, PATH_MAX);
-		char *token = strtok(basename(rst_path), ".");
+		char *token = strtok_r(basename(rst_path), ".", &sp);
 		if (token == NULL) {
 			printf("Config file error.\n");
 			return -1;
-- 
2.33.0