[PATCH] scsi: lpfc: Replace all non-returning strlcpy with strscpy

From: Azeem Shaikh
Date: Tue May 30 2023 - 11:58:06 EST


strlcpy() reads the entire source buffer first.
This read may exceed the destination size limit.
This is both inefficient and can lead to linear read
overflows if a source string is not NUL-terminated [1].
In an effort to remove strlcpy() completely [2], replace
strlcpy() here with strscpy().
No return values were used, so direct replacement is safe.

[1] https://www.kernel.org/doc/html/latest/process/deprecated.html#strlcpy
[2] https://github.com/KSPP/linux/issues/89

Signed-off-by: Azeem Shaikh <azeemshaikh38@xxxxxxxxx>
---
drivers/scsi/lpfc/lpfc_hbadisc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c
index 5ba3a9ad9501..239a6537b987 100644
--- a/drivers/scsi/lpfc/lpfc_hbadisc.c
+++ b/drivers/scsi/lpfc/lpfc_hbadisc.c
@@ -4835,7 +4835,7 @@ lpfc_nlp_state_name(char *buffer, size_t size, int state)
};

if (state < NLP_STE_MAX_STATE && states[state])
- strlcpy(buffer, states[state], size);
+ strscpy(buffer, states[state], size);
else
snprintf(buffer, size, "unknown (%d)", state);
return buffer;