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path: root/drivers/isdn/sc/ioctl.c
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Diffstat (limited to 'drivers/isdn/sc/ioctl.c')
-rw-r--r--drivers/isdn/sc/ioctl.c33
1 files changed, 11 insertions, 22 deletions
diff --git a/drivers/isdn/sc/ioctl.c b/drivers/isdn/sc/ioctl.c
index 1081091bbfaf..4cfdbe08ffd1 100644
--- a/drivers/isdn/sc/ioctl.c
+++ b/drivers/isdn/sc/ioctl.c
@@ -174,7 +174,7 @@ int sc_ioctl(int card, scs_ioctl *data)
pr_debug("%s: SCIOGETSPID: ioctl received\n",
sc_adapter[card]->devicename);
- spid = kmalloc(SCIOC_SPIDSIZE, GFP_KERNEL);
+ spid = kzalloc(SCIOC_SPIDSIZE, GFP_KERNEL);
if (!spid) {
kfree(rcvmsg);
return -ENOMEM;
@@ -194,7 +194,7 @@ int sc_ioctl(int card, scs_ioctl *data)
kfree(rcvmsg);
return status;
}
- strcpy(spid, rcvmsg->msg_data.byte_array);
+ strlcpy(spid, rcvmsg->msg_data.byte_array, SCIOC_SPIDSIZE);
/*
* Package the switch type and send to user space
@@ -215,19 +215,13 @@ int sc_ioctl(int card, scs_ioctl *data)
pr_debug("%s: DCBIOSETSPID: ioctl received\n",
sc_adapter[card]->devicename);
- spid = kmalloc(SCIOC_SPIDSIZE, GFP_KERNEL);
- if(!spid) {
- kfree(rcvmsg);
- return -ENOMEM;
- }
-
/*
* Get the spid from user space
*/
- if (copy_from_user(spid, data->dataptr, SCIOC_SPIDSIZE)) {
+ spid = memdup_user(data->dataptr, SCIOC_SPIDSIZE);
+ if (IS_ERR(spid)) {
kfree(rcvmsg);
- kfree(spid);
- return -EFAULT;
+ return PTR_ERR(spid);
}
pr_debug("%s: SCIOCSETSPID: setting channel %d spid to %s\n",
@@ -272,12 +266,12 @@ int sc_ioctl(int card, scs_ioctl *data)
return status;
}
- dn = kmalloc(SCIOC_DNSIZE, GFP_KERNEL);
+ dn = kzalloc(SCIOC_DNSIZE, GFP_KERNEL);
if (!dn) {
kfree(rcvmsg);
return -ENOMEM;
}
- strcpy(dn, rcvmsg->msg_data.byte_array);
+ strlcpy(dn, rcvmsg->msg_data.byte_array, SCIOC_DNSIZE);
kfree(rcvmsg);
/*
@@ -296,18 +290,13 @@ int sc_ioctl(int card, scs_ioctl *data)
pr_debug("%s: SCIOSETDN: ioctl received\n",
sc_adapter[card]->devicename);
- dn = kmalloc(SCIOC_DNSIZE, GFP_KERNEL);
- if (!dn) {
- kfree(rcvmsg);
- return -ENOMEM;
- }
/*
* Get the spid from user space
*/
- if (copy_from_user(dn, data->dataptr, SCIOC_DNSIZE)) {
+ dn = memdup_user(data->dataptr, SCIOC_DNSIZE);
+ if (IS_ERR(dn)) {
kfree(rcvmsg);
- kfree(dn);
- return -EFAULT;
+ return PTR_ERR(dn);
}
pr_debug("%s: SCIOCSETDN: setting channel %d dn to %s\n",
@@ -348,7 +337,7 @@ int sc_ioctl(int card, scs_ioctl *data)
pr_debug("%s: SCIOSTAT: ioctl received\n",
sc_adapter[card]->devicename);
- bi = kmalloc (sizeof(boardInfo), GFP_KERNEL);
+ bi = kzalloc(sizeof(boardInfo), GFP_KERNEL);
if (!bi) {
kfree(rcvmsg);
return -ENOMEM;