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| author | Ferenc Wagner <wferi@niif.hu> | 2011-08-25 14:44:57 +0200 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2011-12-15 10:57:29 +0400 |
| commit | 8af3d8d5bc75914a01fe41839474902f2c6b79b9 (patch) | |
| tree | 1aa10850f0fd2551a9036c87edc7b6efccf25b72 /drivers/message | |
| parent | cd6dbb038a191b1bea34819de547f66a2187e309 (diff) | |
| download | lwn-8af3d8d5bc75914a01fe41839474902f2c6b79b9.tar.gz lwn-8af3d8d5bc75914a01fe41839474902f2c6b79b9.zip | |
[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@niif.hu>
Acked-by: "Nandigama, Nagalakshmi" <Nagalakshmi.Nandigama@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/message')
| -rw-r--r-- | drivers/message/fusion/mptbase.c | 7 | ||||
| -rw-r--r-- | 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 e9c6a6047a00..a7dc4672d996 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 b4d24dc081ae..76c05bc24cb7 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 |