* [PATCH] several returns before unlocking in lmc_ioctl
@ 2007-10-23 0:59 Roel Kluin
2007-10-23 1:47 ` Roel Kluin
0 siblings, 1 reply; 5+ messages in thread
From: Roel Kluin @ 2007-10-23 0:59 UTC (permalink / raw)
To: lkml
Several returns before unlocking in lmc_ioctl
Signed-off-by: Roel Kluin <12o3l@tiscali.nl>
---
diff --git a/drivers/net/wan/lmc/lmc_main.c b/drivers/net/wan/lmc/lmc_main.c
index 5ea8772..af7b3e4 100644
--- a/drivers/net/wan/lmc/lmc_main.c
+++ b/drivers/net/wan/lmc/lmc_main.c
@@ -142,9 +142,10 @@ int lmc_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd) /*fold00*/
* To date internally, just copy this out to the user.
*/
case LMCIOCGINFO: /*fold01*/
- if (copy_to_user(ifr->ifr_data, &sc->ictl, sizeof (lmc_ctl_t)))
- return -EFAULT;
- ret = 0;
+ if (copy_to_user(ifr->ifr_data, &sc->ictl, sizeof(lmc_ctl_t)))
+ ret = -EFAULT;
+ else
+ ret = 0;
break;
case LMCIOCSINFO: /*fold01*/
@@ -159,8 +160,10 @@ int lmc_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd) /*fold00*/
break;
}
- if (copy_from_user(&ctl, ifr->ifr_data, sizeof (lmc_ctl_t)))
- return -EFAULT;
+ if (copy_from_user(&ctl, ifr->ifr_data, sizeof(lmc_ctl_t))) {
+ ret = -EFAULT;
+ break;
+ }
sc->lmc_media->set_status (sc, &ctl);
@@ -190,8 +193,10 @@ int lmc_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd) /*fold00*/
break;
}
- if (copy_from_user(&new_type, ifr->ifr_data, sizeof(u_int16_t)))
- return -EFAULT;
+ if (copy_from_user(&new_type, ifr->ifr_data, sizeof(u_int16_t))) {
+ ret = -EFAULT;
+ break;
+ }
if (new_type == old_type)
@@ -229,9 +234,10 @@ int lmc_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd) /*fold00*/
sc->lmc_xinfo.Magic1 = 0xDEADBEEF;
if (copy_to_user(ifr->ifr_data, &sc->lmc_xinfo,
- sizeof (struct lmc_xinfo)))
- return -EFAULT;
- ret = 0;
+ sizeof(struct lmc_xinfo))) {
+ ret = -EFAULT;
+ else
+ ret = 0;
break;
@@ -262,9 +268,9 @@ int lmc_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd) /*fold00*/
if (copy_to_user(ifr->ifr_data, &sc->stats,
sizeof (struct lmc_statistics)))
- return -EFAULT;
-
- ret = 0;
+ ret = -EFAULT;
+ else
+ ret = 0;
break;
case LMCIOCCLEARLMCSTATS: /*fold01*/
@@ -292,8 +298,10 @@ int lmc_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd) /*fold00*/
break;
}
- if (copy_from_user(&ctl, ifr->ifr_data, sizeof (lmc_ctl_t)))
- return -EFAULT;
+ if (copy_from_user(&ctl, ifr->ifr_data, sizeof(lmc_ctl_t))) {
+ ret = -EFAULT;
+ break;
+ }
sc->lmc_media->set_circuit_type(sc, ctl.circuit_type);
sc->ictl.circuit_type = ctl.circuit_type;
ret = 0;
@@ -318,12 +326,15 @@ int lmc_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd) /*fold00*/
#ifdef DEBUG
case LMCIOCDUMPEVENTLOG:
- if (copy_to_user(ifr->ifr_data, &lmcEventLogIndex, sizeof (u32)))
- return -EFAULT;
+ if (copy_to_user(ifr->ifr_data, &lmcEventLogIndex, sizeof(u32))) {
+ ret = -EFAULT;
+ break;
+ }
if (copy_to_user(ifr->ifr_data + sizeof (u32), lmcEventLogBuf, sizeof (lmcEventLogBuf)))
- return -EFAULT;
+ ret = -EFAULT;
+ else
+ ret = 0;
- ret = 0;
break;
#endif /* end ifdef _DBG_EVENTLOG */
case LMCIOCT1CONTROL: /*fold01*/
@@ -346,8 +357,10 @@ int lmc_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd) /*fold00*/
*/
netif_stop_queue(dev);
- if (copy_from_user(&xc, ifr->ifr_data, sizeof (struct lmc_xilinx_control)))
- return -EFAULT;
+ if (copy_from_user(&xc, ifr->ifr_data, sizeof(struct lmc_xilinx_control))) {
+ ret = -EFAULT;
+ break;
+ }
switch(xc.command){
case lmc_xilinx_reset: /*fold02*/
{
@@ -618,8 +631,8 @@ int lmc_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd) /*fold00*/
}
spin_unlock_irqrestore(&sc->lmc_lock, flags); /*fold01*/
-
- lmc_trace(dev, "lmc_ioctl out");
+ if (ret >= 0)
+ lmc_trace(dev, "lmc_ioctl out");
return ret;
}
^ permalink raw reply related [flat|nested] 5+ messages in thread
* Re: [PATCH] several returns before unlocking in lmc_ioctl
2007-10-23 0:59 [PATCH] several returns before unlocking in lmc_ioctl Roel Kluin
@ 2007-10-23 1:47 ` Roel Kluin
2007-10-30 18:28 ` Kristof Provost
0 siblings, 1 reply; 5+ messages in thread
From: Roel Kluin @ 2007-10-23 1:47 UTC (permalink / raw)
To: lkml
I think we should keep the lmc_tracing. Use this patch instead.
--
Several returns before unlocking in lmc_ioctl
Signed-off-by: Roel Kluin <12o3l@tiscali.nl>
---
diff --git a/drivers/net/wan/lmc/lmc_main.c b/drivers/net/wan/lmc/lmc_main.c
index 5ea8772..64eb578 100644
--- a/drivers/net/wan/lmc/lmc_main.c
+++ b/drivers/net/wan/lmc/lmc_main.c
@@ -142,9 +142,10 @@ int lmc_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd) /*fold00*/
* To date internally, just copy this out to the user.
*/
case LMCIOCGINFO: /*fold01*/
- if (copy_to_user(ifr->ifr_data, &sc->ictl, sizeof (lmc_ctl_t)))
- return -EFAULT;
- ret = 0;
+ if (copy_to_user(ifr->ifr_data, &sc->ictl, sizeof(lmc_ctl_t)))
+ ret = -EFAULT;
+ else
+ ret = 0;
break;
case LMCIOCSINFO: /*fold01*/
@@ -159,8 +160,10 @@ int lmc_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd) /*fold00*/
break;
}
- if (copy_from_user(&ctl, ifr->ifr_data, sizeof (lmc_ctl_t)))
- return -EFAULT;
+ if (copy_from_user(&ctl, ifr->ifr_data, sizeof(lmc_ctl_t))) {
+ ret = -EFAULT;
+ break;
+ }
sc->lmc_media->set_status (sc, &ctl);
@@ -190,8 +193,10 @@ int lmc_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd) /*fold00*/
break;
}
- if (copy_from_user(&new_type, ifr->ifr_data, sizeof(u_int16_t)))
- return -EFAULT;
+ if (copy_from_user(&new_type, ifr->ifr_data, sizeof(u_int16_t))) {
+ ret = -EFAULT;
+ break;
+ }
if (new_type == old_type)
@@ -229,9 +234,10 @@ int lmc_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd) /*fold00*/
sc->lmc_xinfo.Magic1 = 0xDEADBEEF;
if (copy_to_user(ifr->ifr_data, &sc->lmc_xinfo,
- sizeof (struct lmc_xinfo)))
- return -EFAULT;
- ret = 0;
+ sizeof(struct lmc_xinfo))) {
+ ret = -EFAULT;
+ else
+ ret = 0;
break;
@@ -262,9 +268,9 @@ int lmc_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd) /*fold00*/
if (copy_to_user(ifr->ifr_data, &sc->stats,
sizeof (struct lmc_statistics)))
- return -EFAULT;
-
- ret = 0;
+ ret = -EFAULT;
+ else
+ ret = 0;
break;
case LMCIOCCLEARLMCSTATS: /*fold01*/
@@ -292,8 +298,10 @@ int lmc_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd) /*fold00*/
break;
}
- if (copy_from_user(&ctl, ifr->ifr_data, sizeof (lmc_ctl_t)))
- return -EFAULT;
+ if (copy_from_user(&ctl, ifr->ifr_data, sizeof(lmc_ctl_t))) {
+ ret = -EFAULT;
+ break;
+ }
sc->lmc_media->set_circuit_type(sc, ctl.circuit_type);
sc->ictl.circuit_type = ctl.circuit_type;
ret = 0;
@@ -318,12 +326,15 @@ int lmc_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd) /*fold00*/
#ifdef DEBUG
case LMCIOCDUMPEVENTLOG:
- if (copy_to_user(ifr->ifr_data, &lmcEventLogIndex, sizeof (u32)))
- return -EFAULT;
+ if (copy_to_user(ifr->ifr_data, &lmcEventLogIndex, sizeof(u32))) {
+ ret = -EFAULT;
+ break;
+ }
if (copy_to_user(ifr->ifr_data + sizeof (u32), lmcEventLogBuf, sizeof (lmcEventLogBuf)))
- return -EFAULT;
+ ret = -EFAULT;
+ else
+ ret = 0;
- ret = 0;
break;
#endif /* end ifdef _DBG_EVENTLOG */
case LMCIOCT1CONTROL: /*fold01*/
@@ -346,8 +357,10 @@ int lmc_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd) /*fold00*/
*/
netif_stop_queue(dev);
- if (copy_from_user(&xc, ifr->ifr_data, sizeof (struct lmc_xilinx_control)))
- return -EFAULT;
+ if (copy_from_user(&xc, ifr->ifr_data, sizeof(struct lmc_xilinx_control))) {
+ ret = -EFAULT;
+ break;
+ }
switch(xc.command){
case lmc_xilinx_reset: /*fold02*/
{
^ permalink raw reply related [flat|nested] 5+ messages in thread
* Re: [PATCH] several returns before unlocking in lmc_ioctl
2007-10-23 1:47 ` Roel Kluin
@ 2007-10-30 18:28 ` Kristof Provost
2007-10-30 19:15 ` Roel Kluin
0 siblings, 1 reply; 5+ messages in thread
From: Kristof Provost @ 2007-10-30 18:28 UTC (permalink / raw)
To: Roel Kluin; +Cc: lkml
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On 2007-10-23 03:47:48 (+0200), Roel Kluin <12o3l@tiscali.nl> wrote:
> I think we should keep the lmc_tracing. Use this patch instead.
>
> --
> Several returns before unlocking in lmc_ioctl
>
> Signed-off-by: Roel Kluin <12o3l@tiscali.nl>
> ---
> diff --git a/drivers/net/wan/lmc/lmc_main.c b/drivers/net/wan/lmc/lmc_main.c
> index 5ea8772..64eb578 100644
<snip>
> @@ -229,9 +234,10 @@ int lmc_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd) /*fold00*/
> sc->lmc_xinfo.Magic1 = 0xDEADBEEF;
>
> if (copy_to_user(ifr->ifr_data, &sc->lmc_xinfo,
> - sizeof (struct lmc_xinfo)))
> - return -EFAULT;
> - ret = 0;
> + sizeof(struct lmc_xinfo))) {
> + ret = -EFAULT;
> + else
> + ret = 0;
I think you have an extra curly brace there. It breaks compile on my
system.
Kristof
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^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] several returns before unlocking in lmc_ioctl
2007-10-30 18:28 ` Kristof Provost
@ 2007-10-30 19:15 ` Roel Kluin
2007-10-30 19:50 ` Kristof Provost
0 siblings, 1 reply; 5+ messages in thread
From: Roel Kluin @ 2007-10-30 19:15 UTC (permalink / raw)
To: Kristof Provost; +Cc: lkml
Kristof Provost wrote:
> On 2007-10-23 03:47:48 (+0200), Roel Kluin <12o3l@tiscali.nl> wrote:
>> I think we should keep the lmc_tracing. Use this patch instead.
>>
>> --
>> Several returns before unlocking in lmc_ioctl
>>
>> Signed-off-by: Roel Kluin <12o3l@tiscali.nl>
>> ---
>> diff --git a/drivers/net/wan/lmc/lmc_main.c b/drivers/net/wan/lmc/lmc_main.c
>> index 5ea8772..64eb578 100644
> <snip>
>> @@ -229,9 +234,10 @@ int lmc_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd) /*fold00*/
>> sc->lmc_xinfo.Magic1 = 0xDEADBEEF;
>>
>> if (copy_to_user(ifr->ifr_data, &sc->lmc_xinfo,
>> - sizeof (struct lmc_xinfo)))
>> - return -EFAULT;
>> - ret = 0;
>> + sizeof(struct lmc_xinfo))) {
>> + ret = -EFAULT;
>> + else
>> + ret = 0;
> I think you have an extra curly brace there. It breaks compile on my
> system.
You are right. thanks for notifying me and sorry for the trouble.
please revert my patch (b463d40cdc436a12799a60a1d6ff1941a70a5bb6)
and try instead:
--
Several returns before unlocking in lmc_ioctl
Signed-off-by: Roel Kluin <12o3l@tiscali.nl>
---
diff --git a/drivers/net/wan/lmc/lmc_main.c b/drivers/net/wan/lmc/lmc_main.c
index 5ea8772..427226d 100644
--- a/drivers/net/wan/lmc/lmc_main.c
+++ b/drivers/net/wan/lmc/lmc_main.c
@@ -142,9 +142,10 @@ int lmc_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd) /*fold00*/
* To date internally, just copy this out to the user.
*/
case LMCIOCGINFO: /*fold01*/
- if (copy_to_user(ifr->ifr_data, &sc->ictl, sizeof (lmc_ctl_t)))
- return -EFAULT;
- ret = 0;
+ if (copy_to_user(ifr->ifr_data, &sc->ictl, sizeof(lmc_ctl_t)))
+ ret = -EFAULT;
+ else
+ ret = 0;
break;
case LMCIOCSINFO: /*fold01*/
@@ -159,8 +160,10 @@ int lmc_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd) /*fold00*/
break;
}
- if (copy_from_user(&ctl, ifr->ifr_data, sizeof (lmc_ctl_t)))
- return -EFAULT;
+ if (copy_from_user(&ctl, ifr->ifr_data, sizeof(lmc_ctl_t))) {
+ ret = -EFAULT;
+ break;
+ }
sc->lmc_media->set_status (sc, &ctl);
@@ -190,8 +193,10 @@ int lmc_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd) /*fold00*/
break;
}
- if (copy_from_user(&new_type, ifr->ifr_data, sizeof(u_int16_t)))
- return -EFAULT;
+ if (copy_from_user(&new_type, ifr->ifr_data, sizeof(u_int16_t))) {
+ ret = -EFAULT;
+ break;
+ }
if (new_type == old_type)
@@ -229,9 +234,10 @@ int lmc_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd) /*fold00*/
sc->lmc_xinfo.Magic1 = 0xDEADBEEF;
if (copy_to_user(ifr->ifr_data, &sc->lmc_xinfo,
- sizeof (struct lmc_xinfo)))
- return -EFAULT;
- ret = 0;
+ sizeof(struct lmc_xinfo)))
+ ret = -EFAULT;
+ else
+ ret = 0;
break;
@@ -262,9 +268,9 @@ int lmc_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd) /*fold00*/
if (copy_to_user(ifr->ifr_data, &sc->stats,
sizeof (struct lmc_statistics)))
- return -EFAULT;
-
- ret = 0;
+ ret = -EFAULT;
+ else
+ ret = 0;
break;
case LMCIOCCLEARLMCSTATS: /*fold01*/
@@ -292,8 +298,10 @@ int lmc_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd) /*fold00*/
break;
}
- if (copy_from_user(&ctl, ifr->ifr_data, sizeof (lmc_ctl_t)))
- return -EFAULT;
+ if (copy_from_user(&ctl, ifr->ifr_data, sizeof(lmc_ctl_t))) {
+ ret = -EFAULT;
+ break;
+ }
sc->lmc_media->set_circuit_type(sc, ctl.circuit_type);
sc->ictl.circuit_type = ctl.circuit_type;
ret = 0;
@@ -318,12 +326,15 @@ int lmc_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd) /*fold00*/
#ifdef DEBUG
case LMCIOCDUMPEVENTLOG:
- if (copy_to_user(ifr->ifr_data, &lmcEventLogIndex, sizeof (u32)))
- return -EFAULT;
+ if (copy_to_user(ifr->ifr_data, &lmcEventLogIndex, sizeof(u32))) {
+ ret = -EFAULT;
+ break;
+ }
if (copy_to_user(ifr->ifr_data + sizeof (u32), lmcEventLogBuf, sizeof (lmcEventLogBuf)))
- return -EFAULT;
+ ret = -EFAULT;
+ else
+ ret = 0;
- ret = 0;
break;
#endif /* end ifdef _DBG_EVENTLOG */
case LMCIOCT1CONTROL: /*fold01*/
@@ -346,8 +357,10 @@ int lmc_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd) /*fold00*/
*/
netif_stop_queue(dev);
- if (copy_from_user(&xc, ifr->ifr_data, sizeof (struct lmc_xilinx_control)))
- return -EFAULT;
+ if (copy_from_user(&xc, ifr->ifr_data, sizeof(struct lmc_xilinx_control))) {
+ ret = -EFAULT;
+ break;
+ }
switch(xc.command){
case lmc_xilinx_reset: /*fold02*/
{
^ permalink raw reply related [flat|nested] 5+ messages in thread
* Re: [PATCH] several returns before unlocking in lmc_ioctl
2007-10-30 19:15 ` Roel Kluin
@ 2007-10-30 19:50 ` Kristof Provost
0 siblings, 0 replies; 5+ messages in thread
From: Kristof Provost @ 2007-10-30 19:50 UTC (permalink / raw)
To: Roel Kluin; +Cc: lkml
[-- Attachment #1: Type: text/plain, Size: 535 bytes --]
On 2007-10-30 20:15:12 (+0100), Roel Kluin <12o3l@tiscali.nl> wrote:
> Kristof Provost wrote:
> > I think you have an extra curly brace there. It breaks compile on my
> > system.
>
> You are right. thanks for notifying me and sorry for the trouble.
> please revert my patch (b463d40cdc436a12799a60a1d6ff1941a70a5bb6)
>
> and try instead:
This seems to compile just fine. I'm afraid I can't test it though. I
don't actually have that hardware. I mistakingly left it turned on, so I
noticed the compile error.
Kristof
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^ permalink raw reply [flat|nested] 5+ messages in thread
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2007-10-23 0:59 [PATCH] several returns before unlocking in lmc_ioctl Roel Kluin
2007-10-23 1:47 ` Roel Kluin
2007-10-30 18:28 ` Kristof Provost
2007-10-30 19:15 ` Roel Kluin
2007-10-30 19:50 ` Kristof Provost
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