Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=81dcd1690697efbdf8126e78fbbf7c76d359377f
Commit: 81dcd1690697efbdf8126e78fbbf7c76d359377f
Parent: 8d5cf596d10d740b69b5f4bbdb54b85abf75810d
Author: Ralf Baechle <[EMAIL PROTECTED]>
AuthorDate: Thu Dec 14 15:50:34 2006 -0800
Committer: David S. Miller <[EMAIL PROTECTED]>
CommitDate: Sun Dec 17 21:59:09 2006 -0800
[AX.25]: Fix unchecked ax25_listen_register uses
Fix ax25_listen_register to return something that's a sane error code,
then all callers to use it.
Signed-off-by: Ralf Baechle <[EMAIL PROTECTED]>
Signed-off-by: David S. Miller <[EMAIL PROTECTED]>
---
net/ax25/ax25_iface.c | 7 ++++---
net/netrom/nr_dev.c | 24 ++++++++++++++++++------
net/rose/af_rose.c | 3 ++-
3 files changed, 24 insertions(+), 10 deletions(-)
diff --git a/net/ax25/ax25_iface.c b/net/ax25/ax25_iface.c
index dd9b7fe..51e2934 100644
--- a/net/ax25/ax25_iface.c
+++ b/net/ax25/ax25_iface.c
@@ -154,7 +154,7 @@ int ax25_listen_register(ax25_address *callsign, struct
net_device *dev)
return 0;
if ((listen = kmalloc(sizeof(*listen), GFP_ATOMIC)) == NULL)
- return 0;
+ return -ENOMEM;
listen->callsign = *callsign;
listen->dev = dev;
@@ -164,7 +164,7 @@ int ax25_listen_register(ax25_address *callsign, struct
net_device *dev)
listen_list = listen;
spin_unlock_bh(&listen_lock);
- return 1;
+ return 0;
}
EXPORT_SYMBOL(ax25_listen_register);
@@ -225,7 +225,8 @@ int ax25_listen_mine(ax25_address *callsign, struct
net_device *dev)
spin_lock_bh(&listen_lock);
for (listen = listen_list; listen != NULL; listen = listen->next)
- if (ax25cmp(&listen->callsign, callsign) == 0 && (listen->dev
== dev || listen->dev == NULL)) {
+ if (ax25cmp(&listen->callsign, callsign) == 0 &&
+ (listen->dev == dev || listen->dev == NULL)) {
spin_unlock_bh(&listen_lock);
return 1;
}
diff --git a/net/netrom/nr_dev.c b/net/netrom/nr_dev.c
index 9b8eb54..4700d52 100644
--- a/net/netrom/nr_dev.c
+++ b/net/netrom/nr_dev.c
@@ -128,25 +128,37 @@ static int nr_header(struct sk_buff *skb, struct
net_device *dev, unsigned short
return -37;
}
-static int nr_set_mac_address(struct net_device *dev, void *addr)
+static int __must_check nr_set_mac_address(struct net_device *dev, void *addr)
{
struct sockaddr *sa = addr;
+ int err;
+
+ if (!memcmp(dev->dev_addr, sa->sa_data, dev->addr_len))
+ return 0;
+
+ if (dev->flags & IFF_UP) {
+ err = ax25_listen_register((ax25_address *)sa->sa_data, NULL);
+ if (err)
+ return err;
- if (dev->flags & IFF_UP)
ax25_listen_release((ax25_address *)dev->dev_addr, NULL);
+ }
memcpy(dev->dev_addr, sa->sa_data, dev->addr_len);
- if (dev->flags & IFF_UP)
- ax25_listen_register((ax25_address *)dev->dev_addr, NULL);
-
return 0;
}
static int nr_open(struct net_device *dev)
{
+ int err;
+
+ err = ax25_listen_register((ax25_address *)dev->dev_addr, NULL);
+ if (err)
+ return err;
+
netif_start_queue(dev);
- ax25_listen_register((ax25_address *)dev->dev_addr, NULL);
+
return 0;
}
diff --git a/net/rose/af_rose.c b/net/rose/af_rose.c
index 1605069..09f8a06 100644
--- a/net/rose/af_rose.c
+++ b/net/rose/af_rose.c
@@ -1314,7 +1314,8 @@ static int rose_ioctl(struct socket *sock, unsigned int
cmd, unsigned long arg)
if (copy_from_user(&rose_callsign, argp, sizeof(ax25_address)))
return -EFAULT;
if (ax25cmp(&rose_callsign, &null_ax25_address) != 0)
- ax25_listen_register(&rose_callsign, NULL);
+ return ax25_listen_register(&rose_callsign, NULL);
+
return 0;
case SIOCRSGL2CALL:
-
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