* [PATCH] graph: replace strtok with strtok_r
@ 2024-09-12 0:55 Stephen Hemminger
2024-09-12 1:29 ` fengchengwen
0 siblings, 1 reply; 2+ messages in thread
From: Stephen Hemminger @ 2024-09-12 0:55 UTC (permalink / raw)
To: dev; +Cc: Stephen Hemminger, Sunil Kumar Kori, Rakesh Kudurumalla
The function strtok is not thread safe, better to use strtok_r.
This patch was found by running semgrep on the DPDK repository.
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
---
app/graph/graph.c | 6 +++---
app/graph/utils.c | 18 +++++++++---------
2 files changed, 12 insertions(+), 12 deletions(-)
diff --git a/app/graph/graph.c b/app/graph/graph.c
index 17717738d7..3af031cbaf 100644
--- a/app/graph/graph.c
+++ b/app/graph/graph.c
@@ -103,9 +103,9 @@ parser_usecases_read(char *usecases)
{
bool valid = false;
uint32_t i, j = 0;
- char *token;
+ char *token, *saveptr = NULL;
- token = strtok(usecases, ",");
+ token = strtok_r(usecases, ",", &saveptr);
while (token != NULL) {
for (i = 0; i < RTE_DIM(supported_usecases); i++) {
if (strcmp(supported_usecases[i], token) == 0) {
@@ -116,7 +116,7 @@ parser_usecases_read(char *usecases)
break;
}
}
- token = strtok(NULL, ",");
+ token = strtok_r(NULL, ",", &saveptr);
}
return valid;
diff --git a/app/graph/utils.c b/app/graph/utils.c
index 3e8099ea88..5b1f865dd8 100644
--- a/app/graph/utils.c
+++ b/app/graph/utils.c
@@ -95,12 +95,12 @@ parser_ip4_read(uint32_t *value, char *p)
{
uint8_t shift = 24;
uint32_t ip = 0;
- char *token;
+ char *token, *saveptr = NULL;
- token = strtok(p, ".");
+ token = strtok_r(p, ".", &saveptr);
while (token != NULL) {
ip |= (((uint32_t)strtoul(token, NULL, 10)) << shift);
- token = strtok(NULL, ".");
+ token = strtok_r(NULL, ".", &saveptr);
shift -= 8;
}
@@ -113,13 +113,13 @@ int
parser_ip6_read(uint8_t *value, char *p)
{
uint64_t val = 0;
- char *token;
+ char *token, *saveptr = NULL;
- token = strtok(p, ":");
+ token = strtok_r(p, ":", &saveptr);
while (token != NULL) {
hex_string_to_uint64(&val, token);
*value = val;
- token = strtok(NULL, ":");
+ token = strtok_r(NULL, ":", &saveptr);
value++;
val = 0;
}
@@ -132,13 +132,13 @@ parser_mac_read(uint64_t *value, char *p)
{
uint64_t mac = 0, val = 0;
uint8_t shift = 40;
- char *token;
+ char *token, *saveptr = NULL;
- token = strtok(p, ":");
+ token = strtok_r(p, ":", &saveptr);
while (token != NULL) {
hex_string_to_uint64(&val, token);
mac |= val << shift;
- token = strtok(NULL, ":");
+ token = strtok_r(NULL, ":", &saveptr);
shift -= 8;
val = 0;
}
--
2.45.2
^ permalink raw reply [flat|nested] 2+ messages in thread* Re: [PATCH] graph: replace strtok with strtok_r
2024-09-12 0:55 [PATCH] graph: replace strtok with strtok_r Stephen Hemminger
@ 2024-09-12 1:29 ` fengchengwen
0 siblings, 0 replies; 2+ messages in thread
From: fengchengwen @ 2024-09-12 1:29 UTC (permalink / raw)
To: Stephen Hemminger, dev; +Cc: Sunil Kumar Kori, Rakesh Kudurumalla
Acked-by: Chengwen Feng <fengchengwen@huawei.com>
There are many strtok invoking in DPDK current, and Hai Jie already submitted a patchset [1], and it seemed interrupted.
Perhaps it's time to re-submit.
[1] https://inbox.dpdk.org/dev/20231114110006.91148-1-haijie1@huawei.com/
On 2024/9/12 8:55, Stephen Hemminger wrote:
> The function strtok is not thread safe, better to use strtok_r.
> This patch was found by running semgrep on the DPDK repository.
>
> Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
> ---
> app/graph/graph.c | 6 +++---
> app/graph/utils.c | 18 +++++++++---------
> 2 files changed, 12 insertions(+), 12 deletions(-)
>
> diff --git a/app/graph/graph.c b/app/graph/graph.c
> index 17717738d7..3af031cbaf 100644
> --- a/app/graph/graph.c
> +++ b/app/graph/graph.c
> @@ -103,9 +103,9 @@ parser_usecases_read(char *usecases)
> {
> bool valid = false;
> uint32_t i, j = 0;
> - char *token;
> + char *token, *saveptr = NULL;
>
> - token = strtok(usecases, ",");
> + token = strtok_r(usecases, ",", &saveptr);
> while (token != NULL) {
> for (i = 0; i < RTE_DIM(supported_usecases); i++) {
> if (strcmp(supported_usecases[i], token) == 0) {
> @@ -116,7 +116,7 @@ parser_usecases_read(char *usecases)
> break;
> }
> }
> - token = strtok(NULL, ",");
> + token = strtok_r(NULL, ",", &saveptr);
> }
>
> return valid;
> diff --git a/app/graph/utils.c b/app/graph/utils.c
> index 3e8099ea88..5b1f865dd8 100644
> --- a/app/graph/utils.c
> +++ b/app/graph/utils.c
> @@ -95,12 +95,12 @@ parser_ip4_read(uint32_t *value, char *p)
> {
> uint8_t shift = 24;
> uint32_t ip = 0;
> - char *token;
> + char *token, *saveptr = NULL;
>
> - token = strtok(p, ".");
> + token = strtok_r(p, ".", &saveptr);
> while (token != NULL) {
> ip |= (((uint32_t)strtoul(token, NULL, 10)) << shift);
> - token = strtok(NULL, ".");
> + token = strtok_r(NULL, ".", &saveptr);
> shift -= 8;
> }
>
> @@ -113,13 +113,13 @@ int
> parser_ip6_read(uint8_t *value, char *p)
> {
> uint64_t val = 0;
> - char *token;
> + char *token, *saveptr = NULL;
>
> - token = strtok(p, ":");
> + token = strtok_r(p, ":", &saveptr);
> while (token != NULL) {
> hex_string_to_uint64(&val, token);
> *value = val;
> - token = strtok(NULL, ":");
> + token = strtok_r(NULL, ":", &saveptr);
> value++;
> val = 0;
> }
> @@ -132,13 +132,13 @@ parser_mac_read(uint64_t *value, char *p)
> {
> uint64_t mac = 0, val = 0;
> uint8_t shift = 40;
> - char *token;
> + char *token, *saveptr = NULL;
>
> - token = strtok(p, ":");
> + token = strtok_r(p, ":", &saveptr);
> while (token != NULL) {
> hex_string_to_uint64(&val, token);
> mac |= val << shift;
> - token = strtok(NULL, ":");
> + token = strtok_r(NULL, ":", &saveptr);
> shift -= 8;
> val = 0;
> }
^ permalink raw reply [flat|nested] 2+ messages in thread
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