diff options
| author | Ralf Baechle <ralf@linux-mips.org> | 2006-12-14 15:50:34 -0800 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-12-17 21:59:09 -0800 |
| commit | 81dcd1690697efbdf8126e78fbbf7c76d359377f (patch) | |
| tree | e4408697d6e40efed6f876b7bcd133fdc93c7eb5 | |
| parent | 8d5cf596d10d740b69b5f4bbdb54b85abf75810d (diff) | |
| download | linux-81dcd1690697efbdf8126e78fbbf7c76d359377f.tar.bz2 | |
[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 <ralf@linux-mips.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/ax25/ax25_iface.c | 7 | ||||
| -rw-r--r-- | net/netrom/nr_dev.c | 24 | ||||
| -rw-r--r-- | 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 dd9b7fee3df8..51e293420b7f 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 9b8eb54971ab..4700d5225b78 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 1605069e5db1..09f8a06bf806 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: |