* [PATCH 2/5] scsi: bfa: bfa_fcs_lport.c: Cleaning up missing null-terminate by switching from strncpy to strzcpy
@ 2014-10-18 22:13 Rickard Strandqvist
2014-10-20 15:37 ` Dan Carpenter
0 siblings, 1 reply; 3+ messages in thread
From: Rickard Strandqvist @ 2014-10-18 22:13 UTC (permalink / raw)
To: Anil Gurumurthy, Sudarsana Kalluru
Cc: Rickard Strandqvist, James E.J. Bottomley, Andi Kleen,
Andrew Morton, Dan Carpenter, Grant Likely, linux-kernel,
linux-scsi
Ensures that the string is null-terminate in connection with the
use of strncpy, by switching from strncpy to strzcpy.
Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
---
drivers/scsi/bfa/bfa_fcs_lport.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/scsi/bfa/bfa_fcs_lport.c b/drivers/scsi/bfa/bfa_fcs_lport.c
index ff75ef8..78af89e 100644
--- a/drivers/scsi/bfa/bfa_fcs_lport.c
+++ b/drivers/scsi/bfa/bfa_fcs_lport.c
@@ -2633,7 +2633,7 @@ bfa_fcs_fdmi_get_hbaattr(struct bfa_fcs_lport_fdmi_s *fdmi,
strncpy(hba_attr->driver_version, (char *)driver_info->version,
sizeof(hba_attr->driver_version));
- strncpy(hba_attr->os_name, driver_info->host_os_name,
+ strzcpy(hba_attr->os_name, driver_info->host_os_name,
sizeof(hba_attr->os_name));
/*
--
1.7.10.4
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH 2/5] scsi: bfa: bfa_fcs_lport.c: Cleaning up missing null-terminate by switching from strncpy to strzcpy
2014-10-18 22:13 [PATCH 2/5] scsi: bfa: bfa_fcs_lport.c: Cleaning up missing null-terminate by switching from strncpy to strzcpy Rickard Strandqvist
@ 2014-10-20 15:37 ` Dan Carpenter
2014-10-20 21:10 ` Rickard Strandqvist
0 siblings, 1 reply; 3+ messages in thread
From: Dan Carpenter @ 2014-10-20 15:37 UTC (permalink / raw)
To: Rickard Strandqvist
Cc: Anil Gurumurthy, Sudarsana Kalluru, James E.J. Bottomley,
Andi Kleen, Andrew Morton, Grant Likely, linux-kernel,
linux-scsi
On Sun, Oct 19, 2014 at 12:13:10AM +0200, Rickard Strandqvist wrote:
> Ensures that the string is null-terminate in connection with the
> use of strncpy, by switching from strncpy to strzcpy.
>
I wish the changelogs were more clear that we have no reason to think
this is a real issue.
> Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
> ---
> drivers/scsi/bfa/bfa_fcs_lport.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/scsi/bfa/bfa_fcs_lport.c b/drivers/scsi/bfa/bfa_fcs_lport.c
> index ff75ef8..78af89e 100644
> --- a/drivers/scsi/bfa/bfa_fcs_lport.c
> +++ b/drivers/scsi/bfa/bfa_fcs_lport.c
> @@ -2633,7 +2633,7 @@ bfa_fcs_fdmi_get_hbaattr(struct bfa_fcs_lport_fdmi_s *fdmi,
> strncpy(hba_attr->driver_version, (char *)driver_info->version,
> sizeof(hba_attr->driver_version));
Why do we not change this one?
>
> - strncpy(hba_attr->os_name, driver_info->host_os_name,
> + strzcpy(hba_attr->os_name, driver_info->host_os_name,
> sizeof(hba_attr->os_name));
strlcpy() would also be totally safe here. It's also safe for patch
patch 3 and patch 4. Patch 5 is trickier to audit so I don't know if
strlcpy() is safe.
regards,
dan carpenter
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH 2/5] scsi: bfa: bfa_fcs_lport.c: Cleaning up missing null-terminate by switching from strncpy to strzcpy
2014-10-20 15:37 ` Dan Carpenter
@ 2014-10-20 21:10 ` Rickard Strandqvist
0 siblings, 0 replies; 3+ messages in thread
From: Rickard Strandqvist @ 2014-10-20 21:10 UTC (permalink / raw)
To: Dan Carpenter
Cc: Anil Gurumurthy, Sudarsana Kalluru, James E.J. Bottomley,
Andi Kleen, Andrew Morton, Grant Likely, linux-kernel,
linux-scsi
2014-10-20 17:37 GMT+02:00 Dan Carpenter <dan.carpenter@oracle.com>:
> On Sun, Oct 19, 2014 at 12:13:10AM +0200, Rickard Strandqvist wrote:
>> Ensures that the string is null-terminate in connection with the
>> use of strncpy, by switching from strncpy to strzcpy.
>>
>
> I wish the changelogs were more clear that we have no reason to think
> this is a real issue.
>
>> Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
>> ---
>> drivers/scsi/bfa/bfa_fcs_lport.c | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/scsi/bfa/bfa_fcs_lport.c b/drivers/scsi/bfa/bfa_fcs_lport.c
>> index ff75ef8..78af89e 100644
>> --- a/drivers/scsi/bfa/bfa_fcs_lport.c
>> +++ b/drivers/scsi/bfa/bfa_fcs_lport.c
>> @@ -2633,7 +2633,7 @@ bfa_fcs_fdmi_get_hbaattr(struct bfa_fcs_lport_fdmi_s *fdmi,
>> strncpy(hba_attr->driver_version, (char *)driver_info->version,
>> sizeof(hba_attr->driver_version));
>
> Why do we not change this one?
>
>>
>> - strncpy(hba_attr->os_name, driver_info->host_os_name,
>> + strzcpy(hba_attr->os_name, driver_info->host_os_name,
>> sizeof(hba_attr->os_name));
>
> strlcpy() would also be totally safe here. It's also safe for patch
> patch 3 and patch 4. Patch 5 is trickier to audit so I don't know if
> strlcpy() is safe.
Hi Dan
It was a miss, should have done this on both strncpy.
After becoming quite attacked for having changed to strlcpy I am very
careful with it now.
But ok, then I submit 2 3 4 with strlcpy instead.
But this is a little bad example for strzcpy though :-(
Kind regards
Rickard Strandqvist
^ permalink raw reply [flat|nested] 3+ messages in thread
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2014-10-18 22:13 [PATCH 2/5] scsi: bfa: bfa_fcs_lport.c: Cleaning up missing null-terminate by switching from strncpy to strzcpy Rickard Strandqvist
2014-10-20 15:37 ` Dan Carpenter
2014-10-20 21:10 ` Rickard Strandqvist
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