diff options
| author | andrew hendry <andrew.hendry@gmail.com> | 2010-11-25 02:18:35 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-11-28 11:12:20 -0800 |
| commit | f90de660678cf553f63c387945830a2e4d26dd3e (patch) | |
| tree | 012d35e0170472ad715422dbd25d564d6448476d /net/x25 | |
| parent | 5595a1a5997953dbd8c5df7c2f7d4b3a2eb2be4b (diff) | |
| download | lwn-f90de660678cf553f63c387945830a2e4d26dd3e.tar.gz lwn-f90de660678cf553f63c387945830a2e4d26dd3e.zip | |
X25 remove bkl in facility ioctls
Signed-off-by: Andrew Hendry <andrew.hendry@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/x25')
| -rw-r--r-- | net/x25/af_x25.c | 48 |
1 files changed, 25 insertions, 23 deletions
diff --git a/net/x25/af_x25.c b/net/x25/af_x25.c index 45be72c3f940..2518efae8ec9 100644 --- a/net/x25/af_x25.c +++ b/net/x25/af_x25.c @@ -1424,34 +1424,34 @@ static int x25_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) rc = x25_subscr_ioctl(cmd, argp); break; case SIOCX25GFACILITIES: { - struct x25_facilities fac = x25->facilities; - lock_kernel(); - rc = copy_to_user(argp, &fac, - sizeof(fac)) ? -EFAULT : 0; - unlock_kernel(); + lock_sock(sk); + rc = copy_to_user(argp, &x25->facilities, + sizeof(x25->facilities)) + ? -EFAULT : 0; + release_sock(sk); break; } case SIOCX25SFACILITIES: { struct x25_facilities facilities; rc = -EFAULT; - lock_kernel(); if (copy_from_user(&facilities, argp, sizeof(facilities))) break; rc = -EINVAL; + lock_sock(sk); if (sk->sk_state != TCP_LISTEN && sk->sk_state != TCP_CLOSE) - break; + goto out_fac_release; if (facilities.pacsize_in < X25_PS16 || facilities.pacsize_in > X25_PS4096) - break; + goto out_fac_release; if (facilities.pacsize_out < X25_PS16 || facilities.pacsize_out > X25_PS4096) - break; + goto out_fac_release; if (facilities.winsize_in < 1 || facilities.winsize_in > 127) - break; + goto out_fac_release; if (facilities.throughput) { int out = facilities.throughput & 0xf0; int in = facilities.throughput & 0x0f; @@ -1459,27 +1459,28 @@ static int x25_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) facilities.throughput |= X25_DEFAULT_THROUGHPUT << 4; else if (out < 0x30 || out > 0xD0) - break; + goto out_fac_release; if (!in) facilities.throughput |= X25_DEFAULT_THROUGHPUT; else if (in < 0x03 || in > 0x0D) - break; + goto out_fac_release; } if (facilities.reverse && (facilities.reverse & 0x81) != 0x81) - break; + goto out_fac_release; x25->facilities = facilities; rc = 0; - unlock_kernel(); +out_fac_release: + release_sock(sk); break; } case SIOCX25GDTEFACILITIES: { - lock_kernel(); + lock_sock(sk); rc = copy_to_user(argp, &x25->dte_facilities, sizeof(x25->dte_facilities)); - unlock_kernel(); + release_sock(sk); if (rc) rc = -EFAULT; break; @@ -1488,24 +1489,25 @@ static int x25_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) case SIOCX25SDTEFACILITIES: { struct x25_dte_facilities dtefacs; rc = -EFAULT; - lock_kernel(); if (copy_from_user(&dtefacs, argp, sizeof(dtefacs))) break; rc = -EINVAL; + lock_sock(sk); if (sk->sk_state != TCP_LISTEN && sk->sk_state != TCP_CLOSE) - break; + goto out_dtefac_release; if (dtefacs.calling_len > X25_MAX_AE_LEN) - break; + goto out_dtefac_release; if (dtefacs.calling_ae == NULL) - break; + goto out_dtefac_release; if (dtefacs.called_len > X25_MAX_AE_LEN) - break; + goto out_dtefac_release; if (dtefacs.called_ae == NULL) - break; + goto out_dtefac_release; x25->dte_facilities = dtefacs; rc = 0; - unlock_kernel(); +out_dtefac_release: + release_sock(sk); break; } |