net/bluetooth/bnep: Use strscpy() to copy device name

From: David Laight <[email protected]>

---
This is one of a group of patches that remove potentially unbounded strcpy() calls.

They are mostly replaced by strscpy() or, when strlen() has just been called, with memcpy() (usually including the '\0').

Calls with copy string literals into arrays are left unchanged. They are safe and easily detected as such.

The changes were made by getting the compiler to detect the calls and then fixing the code by hand.

Note that all the changes are only compile tested.

Some Makefiles were changed to allow files to contain strcpy(). As well as 'difficult to fix' files, this included 'show' functions as they really need to use sysfs_emit() or seq_printf().

All the patches are being sent individually to avoid very long cc lists. Apologies for the terse commit messages and likely unexpected tags. (There are about 100 patches in total.)

 net/bluetooth/bnep/core.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

index d44987d4515c..1e14fa1e886a 100644
@@ -639,7 +639,7 @@ int bnep_add_connection(struct bnep_connadd_req *req, struct socket *sock)
 	}
 
 	up_write(&bnep_session_sem);
-	strcpy(req->device, dev->name);
+	strscpy(req->device, dev->name);
 	return 0;
 
 failed:

@@ -678,7 +678,7 @@ static void __bnep_copy_ci(struct bnep_conninfo *ci, struct bnep_session *s)
 
 	memset(ci, 0, sizeof(*ci));
 	memcpy(ci->dst, s->eh.h_source, ETH_ALEN);
-	strcpy(ci->device, s->dev->name);
+	strscpy(ci->device, s->dev->name);
 	ci->flags = s->flags & valid_flags;
 	ci->state = s->state;
 	ci->role  = s->role;

2.39.5

This is an automated email and please do not reply to this email.

Dear Submitter,

Thank you for submitting the patches to the linux bluetooth mailing list.
While preparing the CI tests, the patches you submitted couldn't be applied to the current HEAD of the repository.

----- Output -----

error: patch failed: net/bluetooth/bnep/core.c:639
error: net/bluetooth/bnep/core.c: patch does not apply
hint: Use 'git am --show-current-patch' to see the failed patch

Please resolve the issue and submit the patches again.

---
Regards,
Linux Bluetooth