[RFC] eal: remove size for eal_set_runtime_dir
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Commit Message
The size argument to eal_set_runtime_dir is useless and was
being used incorrectly in strlcpy. It worked only because
all callers passed PATH_MAX which is same as sizeof the destination
runtime_dir.
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Suggested-by: Morten Brørup <mb@smartsharesystems.com>
---
lib/eal/common/eal_common_config.c | 7 ++-----
lib/eal/common/eal_private.h | 4 +---
lib/eal/freebsd/eal.c | 2 +-
lib/eal/linux/eal.c | 2 +-
4 files changed, 5 insertions(+), 10 deletions(-)
Comments
> From: Stephen Hemminger [mailto:stephen@networkplumber.org]
> Sent: Wednesday, 5 January 2022 19.02
>
> The size argument to eal_set_runtime_dir is useless and was
> being used incorrectly in strlcpy. It worked only because
> all callers passed PATH_MAX which is same as sizeof the destination
> runtime_dir.
>
> Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
> Suggested-by: Morten Brørup <mb@smartsharesystems.com>
> ---
> lib/eal/common/eal_common_config.c | 7 ++-----
> lib/eal/common/eal_private.h | 4 +---
> lib/eal/freebsd/eal.c | 2 +-
> lib/eal/linux/eal.c | 2 +-
> 4 files changed, 5 insertions(+), 10 deletions(-)
>
> diff --git a/lib/eal/common/eal_common_config.c
> b/lib/eal/common/eal_common_config.c
> index 1c4c4dd585d0..62a9d7a198db 100644
> --- a/lib/eal/common/eal_common_config.c
> +++ b/lib/eal/common/eal_common_config.c
> @@ -29,12 +29,9 @@ rte_eal_get_runtime_dir(void)
> }
>
> int
> -eal_set_runtime_dir(char *run_dir, size_t size)
> +eal_set_runtime_dir(const char *run_dir)
> {
> - size_t str_size;
> -
> - str_size = strlcpy(runtime_dir, run_dir, size);
> - if (str_size >= size) {
> + if (strlcpy(runtime_dir, run_dir, PATH_MAX) >= PATH_MAX) {
> RTE_LOG(ERR, EAL, "Runtime directory string too long\n");
> return -1;
> }
> diff --git a/lib/eal/common/eal_private.h
> b/lib/eal/common/eal_private.h
> index 36bcc0b5a492..734f1f334b69 100644
> --- a/lib/eal/common/eal_private.h
> +++ b/lib/eal/common/eal_private.h
> @@ -681,13 +681,11 @@ eal_mem_set_dump(void *virt, size_t size, bool
> dump);
> *
> * @param run_dir
> * The new runtime directory path of DPDK
> - * @param size
> - * The size of the new runtime directory path in bytes.
> * @return
> * 0 on success, (-1) on failure.
> */
> int
> -eal_set_runtime_dir(char *run_dir, size_t size);
> +eal_set_runtime_dir(const char *run_dir);
>
> /**
> * Get the internal configuration structure.
> diff --git a/lib/eal/freebsd/eal.c b/lib/eal/freebsd/eal.c
> index a1cd2462db1b..503e276dc27f 100644
> --- a/lib/eal/freebsd/eal.c
> +++ b/lib/eal/freebsd/eal.c
> @@ -123,7 +123,7 @@ eal_create_runtime_dir(void)
> return -1;
> }
>
> - if (eal_set_runtime_dir(run_dir, sizeof(run_dir)))
> + if (eal_set_runtime_dir(run_dir))
> return -1;
>
> return 0;
> diff --git a/lib/eal/linux/eal.c b/lib/eal/linux/eal.c
> index 80ffe1c7f9d8..a73ff75f65c9 100644
> --- a/lib/eal/linux/eal.c
> +++ b/lib/eal/linux/eal.c
> @@ -135,7 +135,7 @@ eal_create_runtime_dir(void)
> return -1;
> }
>
> - if (eal_set_runtime_dir(run_dir, sizeof(run_dir)))
> + if (eal_set_runtime_dir(run_dir))
> return -1;
>
> return 0;
> --
> 2.30.2
>
Reviewed-by: Morten Brørup<mb@smartsharesystems.com>
@@ -29,12 +29,9 @@ rte_eal_get_runtime_dir(void)
}
int
-eal_set_runtime_dir(char *run_dir, size_t size)
+eal_set_runtime_dir(const char *run_dir)
{
- size_t str_size;
-
- str_size = strlcpy(runtime_dir, run_dir, size);
- if (str_size >= size) {
+ if (strlcpy(runtime_dir, run_dir, PATH_MAX) >= PATH_MAX) {
RTE_LOG(ERR, EAL, "Runtime directory string too long\n");
return -1;
}
@@ -681,13 +681,11 @@ eal_mem_set_dump(void *virt, size_t size, bool dump);
*
* @param run_dir
* The new runtime directory path of DPDK
- * @param size
- * The size of the new runtime directory path in bytes.
* @return
* 0 on success, (-1) on failure.
*/
int
-eal_set_runtime_dir(char *run_dir, size_t size);
+eal_set_runtime_dir(const char *run_dir);
/**
* Get the internal configuration structure.
@@ -123,7 +123,7 @@ eal_create_runtime_dir(void)
return -1;
}
- if (eal_set_runtime_dir(run_dir, sizeof(run_dir)))
+ if (eal_set_runtime_dir(run_dir))
return -1;
return 0;
@@ -135,7 +135,7 @@ eal_create_runtime_dir(void)
return -1;
}
- if (eal_set_runtime_dir(run_dir, sizeof(run_dir)))
+ if (eal_set_runtime_dir(run_dir))
return -1;
return 0;