[PATCH 19/21] raw/cnxk_gpio: replace strtok with strtok_r

[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 function.

Signed-off-by: Jie Hai <haij...@huawei.com>
---
 drivers/raw/cnxk_gpio/cnxk_gpio.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/raw/cnxk_gpio/cnxk_gpio.c 
b/drivers/raw/cnxk_gpio/cnxk_gpio.c
index 29c250672646..a499a258f315 100644
--- a/drivers/raw/cnxk_gpio/cnxk_gpio.c
+++ b/drivers/raw/cnxk_gpio/cnxk_gpio.c
@@ -190,7 +190,7 @@ static int
 cnxk_gpio_parse_allowlist(struct cnxk_gpiochip *gpiochip, char *allowlist)
 {
        int i, ret, val, queue = 0;
-       char *token;
+       char *token, *sp = NULL;
        int *list;
 
        list = rte_calloc(NULL, gpiochip->num_gpios, sizeof(*list), 0);
@@ -208,7 +208,7 @@ cnxk_gpio_parse_allowlist(struct cnxk_gpiochip *gpiochip, 
char *allowlist)
        allowlist[strlen(allowlist) - 1] = ' ';
 
        /* quiesce -Wcast-qual */
-       token = strtok((char *)(uintptr_t)allowlist, ",");
+       token = strtok_r((char *)(uintptr_t)allowlist, ",", &sp);
        do {
                errno = 0;
                val = strtol(token, NULL, 10);
@@ -234,7 +234,7 @@ cnxk_gpio_parse_allowlist(struct cnxk_gpiochip *gpiochip, 
char *allowlist)
                }
                if (i == queue)
                        list[queue++] = val;
-       } while ((token = strtok(NULL, ",")));
+       } while ((token = strtok_r(NULL, ",", &sp)));
 
        free(allowlist);
        gpiochip->allowlist = list;
-- 
2.30.0