The patch seem to be fine. Please consider this patch as an Acked by me. Regards, Nagalakshmi -----Original Message----- From: Ferenc Wagner [mailto:wferi@xxxxxxx] Sent: Thursday, August 25, 2011 6:15 PM To: Andrew Morton Cc: Desai, Kashyap; Support; DL-MPT Fusion Linux; linux-scsi@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx Subject: Re: [PATCH v2] SCSI: fusion: ensure NUL-termination of MptCallbacksName elements Using strlcpy instead of memcpy makes the strlen() calls superfluous and also ensures zero-termination of the copied string. At the same time get rid of the magic constant 50. Actually, I can't see why copying the callback name is necessary instead of simply storing a pointer to it (just like to the callback function itself), but that goes beyond the scope of this fix. Signed-off-by: Ferenc Wagner <wferi@xxxxxxx> --- drivers/message/fusion/mptbase.c | 7 ++++--- drivers/message/fusion/mptbase.h | 1 + 2 files changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/message/fusion/mptbase.c b/drivers/message/fusion/mptbase.c index e9c6a60..a7dc467 100644 --- a/drivers/message/fusion/mptbase.c +++ b/drivers/message/fusion/mptbase.c @@ -115,7 +115,8 @@ module_param(mpt_fwfault_debug, int, 0600); MODULE_PARM_DESC(mpt_fwfault_debug, "Enable detection of Firmware fault and halt Firmware on fault - (default=0)"); -static char MptCallbacksName[MPT_MAX_PROTOCOL_DRIVERS][50]; +static char MptCallbacksName[MPT_MAX_PROTOCOL_DRIVERS] + [MPT_MAX_CALLBACKNAME_LEN+1]; #ifdef MFCNT static int mfcounter = 0; @@ -717,8 +718,8 @@ mpt_register(MPT_CALLBACK cbfunc, MPT_DRIVER_CLASS dclass, char *func_name) MptDriverClass[cb_idx] = dclass; MptEvHandlers[cb_idx] = NULL; last_drv_idx = cb_idx; - memcpy(MptCallbacksName[cb_idx], func_name, - strlen(func_name) > 50 ? 50 : strlen(func_name)); + strlcpy(MptCallbacksName[cb_idx], func_name, + MPT_MAX_CALLBACKNAME_LEN+1); break; } } diff --git a/drivers/message/fusion/mptbase.h b/drivers/message/fusion/mptbase.h index b4d24dc..76c05bc 100644 --- a/drivers/message/fusion/mptbase.h +++ b/drivers/message/fusion/mptbase.h @@ -89,6 +89,7 @@ */ #define MPT_MAX_ADAPTERS 18 #define MPT_MAX_PROTOCOL_DRIVERS 16 +#define MPT_MAX_CALLBACKNAME_LEN 49 #define MPT_MAX_BUS 1 /* Do not change */ #define MPT_MAX_FC_DEVICES 255 #define MPT_MAX_SCSI_DEVICES 16 -- 1.6.5 -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
