#include <linux/static_key.h>
#include <linux/memcontrol.h>
#include <linux/prefetch.h>
+#include <linux/compat.h>
#include <linux/uaccess.h>
return sizeof(tv);
}
-static int sock_set_timeout(long *timeo_p, char __user *optval, int optlen, bool old_timeval)
+static int sock_set_timeout(long *timeo_p, sockptr_t optval, int optlen,
+ bool old_timeval)
{
struct __kernel_sock_timeval tv;
if (optlen < sizeof(tv32))
return -EINVAL;
- if (copy_from_user(&tv32, optval, sizeof(tv32)))
+ if (copy_from_sockptr(&tv32, optval, sizeof(tv32)))
return -EFAULT;
tv.tv_sec = tv32.tv_sec;
tv.tv_usec = tv32.tv_usec;
if (optlen < sizeof(old_tv))
return -EINVAL;
- if (copy_from_user(&old_tv, optval, sizeof(old_tv)))
+ if (copy_from_sockptr(&old_tv, optval, sizeof(old_tv)))
return -EFAULT;
tv.tv_sec = old_tv.tv_sec;
tv.tv_usec = old_tv.tv_usec;
} else {
if (optlen < sizeof(tv))
return -EINVAL;
- if (copy_from_user(&tv, optval, sizeof(tv)))
+ if (copy_from_sockptr(&tv, optval, sizeof(tv)))
return -EFAULT;
}
if (tv.tv_usec < 0 || tv.tv_usec >= USEC_PER_SEC)
}
EXPORT_SYMBOL(sock_bindtoindex);
-static int sock_setbindtodevice(struct sock *sk, char __user *optval,
- int optlen)
+static int sock_setbindtodevice(struct sock *sk, sockptr_t optval, int optlen)
{
int ret = -ENOPROTOOPT;
#ifdef CONFIG_NETDEVICES
memset(devname, 0, sizeof(devname));
ret = -EFAULT;
- if (copy_from_user(devname, optval, optlen))
+ if (copy_from_sockptr(devname, optval, optlen))
goto out;
index = 0;
return ret;
}
-static inline void sock_valbool_flag(struct sock *sk, enum sock_flags bit,
- int valbool)
-{
- if (valbool)
- sock_set_flag(sk, bit);
- else
- sock_reset_flag(sk, bit);
-}
-
bool sk_mc_loop(struct sock *sk)
{
if (dev_recursion_level())
return inet6_sk(sk)->mc_loop;
#endif
}
- WARN_ON(1);
+ WARN_ON_ONCE(1);
return true;
}
EXPORT_SYMBOL(sk_mc_loop);
*/
int sock_setsockopt(struct socket *sock, int level, int optname,
- char __user *optval, unsigned int optlen)
+ sockptr_t optval, unsigned int optlen)
{
struct sock_txtime sk_txtime;
struct sock *sk = sock->sk;
if (optlen < sizeof(int))
return -EINVAL;
- if (get_user(val, (int __user *)optval))
+ if (copy_from_sockptr(&val, optval, sizeof(val)))
return -EFAULT;
valbool = val ? 1 : 0;
ret = -EINVAL; /* 1003.1g */
break;
}
- if (copy_from_user(&ling, optval, sizeof(ling))) {
+ if (copy_from_sockptr(&ling, optval, sizeof(ling))) {
ret = -EFAULT;
break;
}
case SO_RCVTIMEO_OLD:
case SO_RCVTIMEO_NEW:
- ret = sock_set_timeout(&sk->sk_rcvtimeo, optval, optlen, optname == SO_RCVTIMEO_OLD);
+ ret = sock_set_timeout(&sk->sk_rcvtimeo, optval,
+ optlen, optname == SO_RCVTIMEO_OLD);
break;
case SO_SNDTIMEO_OLD:
case SO_SNDTIMEO_NEW:
- ret = sock_set_timeout(&sk->sk_sndtimeo, optval, optlen, optname == SO_SNDTIMEO_OLD);
+ ret = sock_set_timeout(&sk->sk_sndtimeo, optval,
+ optlen, optname == SO_SNDTIMEO_OLD);
break;
- case SO_ATTACH_FILTER:
- ret = -EINVAL;
- if (optlen == sizeof(struct sock_fprog)) {
- struct sock_fprog fprog;
-
- ret = -EFAULT;
- if (copy_from_user(&fprog, optval, sizeof(fprog)))
- break;
+ case SO_ATTACH_FILTER: {
+ struct sock_fprog fprog;
+ ret = copy_bpf_fprog_from_user(&fprog, optval, optlen);
+ if (!ret)
ret = sk_attach_filter(&fprog, sk);
- }
break;
-
+ }
case SO_ATTACH_BPF:
ret = -EINVAL;
if (optlen == sizeof(u32)) {
u32 ufd;
ret = -EFAULT;
- if (copy_from_user(&ufd, optval, sizeof(ufd)))
+ if (copy_from_sockptr(&ufd, optval, sizeof(ufd)))
break;
ret = sk_attach_bpf(ufd, sk);
}
break;
- case SO_ATTACH_REUSEPORT_CBPF:
- ret = -EINVAL;
- if (optlen == sizeof(struct sock_fprog)) {
- struct sock_fprog fprog;
-
- ret = -EFAULT;
- if (copy_from_user(&fprog, optval, sizeof(fprog)))
- break;
+ case SO_ATTACH_REUSEPORT_CBPF: {
+ struct sock_fprog fprog;
+ ret = copy_bpf_fprog_from_user(&fprog, optval, optlen);
+ if (!ret)
ret = sk_reuseport_attach_filter(&fprog, sk);
- }
break;
-
+ }
case SO_ATTACH_REUSEPORT_EBPF:
ret = -EINVAL;
if (optlen == sizeof(u32)) {
u32 ufd;
ret = -EFAULT;
- if (copy_from_user(&ufd, optval, sizeof(ufd)))
+ if (copy_from_sockptr(&ufd, optval, sizeof(ufd)))
break;
ret = sk_reuseport_attach_bpf(ufd, sk);
if (sizeof(ulval) != sizeof(val) &&
optlen >= sizeof(ulval) &&
- get_user(ulval, (unsigned long __user *)optval)) {
+ copy_from_sockptr(&ulval, optval, sizeof(ulval))) {
ret = -EFAULT;
break;
}
if (optlen != sizeof(struct sock_txtime)) {
ret = -EINVAL;
break;
- } else if (copy_from_user(&sk_txtime, optval,
+ } else if (copy_from_sockptr(&sk_txtime, optval,
sizeof(struct sock_txtime))) {
ret = -EFAULT;
break;
cgroup_sk_alloc(&sk->sk_cgrp_data);
sock_update_classid(&sk->sk_cgrp_data);
sock_update_netprioidx(&sk->sk_cgrp_data);
+ sk_tx_queue_clear(sk);
}
return sk;
/* sk->sk_memcg will be populated at accept() time */
newsk->sk_memcg = NULL;
- cgroup_sk_alloc(&newsk->sk_cgrp_data);
+ cgroup_sk_clone(&newsk->sk_cgrp_data);
rcu_read_lock();
filter = rcu_dereference(sk->sk_filter);
/*
* Before updating sk_refcnt, we must commit prior changes to memory
- * (Documentation/RCU/rculist_nulls.txt for details)
+ * (Documentation/RCU/rculist_nulls.rst for details)
*/
smp_wmb();
refcount_set(&newsk->sk_refcnt, 2);
*/
sk_refcnt_debug_inc(newsk);
sk_set_socket(newsk, NULL);
+ sk_tx_queue_clear(newsk);
RCU_INIT_POINTER(newsk->sk_wq, NULL);
if (newsk->sk_prot->sockets_allocated)
}
EXPORT_SYMBOL(sock_no_shutdown);
-int sock_no_setsockopt(struct socket *sock, int level, int optname,
- char __user *optval, unsigned int optlen)
-{
- return -EOPNOTSUPP;
-}
-EXPORT_SYMBOL(sock_no_setsockopt);
-
-int sock_no_getsockopt(struct socket *sock, int level, int optname,
- char __user *optval, int __user *optlen)
-{
- return -EOPNOTSUPP;
-}
-EXPORT_SYMBOL(sock_no_getsockopt);
-
int sock_no_sendmsg(struct socket *sock, struct msghdr *m, size_t len)
{
return -EOPNOTSUPP;
}
EXPORT_SYMBOL(sock_no_mmap);
+/*
+ * When a file is received (via SCM_RIGHTS, etc), we must bump the
+ * various sock-based usage counts.
+ */
+void __receive_sock(struct file *file)
+{
+ struct socket *sock;
+ int error;
+
+ /*
+ * The resulting value of "error" is ignored here since we only
+ * need to take action when the file is a socket and testing
+ * "sock" for NULL is sufficient.
+ */
+ sock = sock_from_file(file, &error);
+ if (sock) {
+ sock_update_netprioidx(&sock->sk->sk_cgrp_data);
+ sock_update_classid(&sock->sk->sk_cgrp_data);
+ }
+}
+
ssize_t sock_no_sendpage(struct socket *sock, struct page *page, int offset, size_t size, int flags)
{
ssize_t res;
sk_rx_queue_clear(sk);
/*
* Before updating sk_refcnt, we must commit prior changes to memory
- * (Documentation/RCU/rculist_nulls.txt for details)
+ * (Documentation/RCU/rculist_nulls.rst for details)
*/
smp_wmb();
refcount_set(&sk->sk_refcnt, 1);
}
EXPORT_SYMBOL(sock_common_getsockopt);
-#ifdef CONFIG_COMPAT
-int compat_sock_common_getsockopt(struct socket *sock, int level, int optname,
- char __user *optval, int __user *optlen)
-{
- struct sock *sk = sock->sk;
-
- if (sk->sk_prot->compat_getsockopt != NULL)
- return sk->sk_prot->compat_getsockopt(sk, level, optname,
- optval, optlen);
- return sk->sk_prot->getsockopt(sk, level, optname, optval, optlen);
-}
-EXPORT_SYMBOL(compat_sock_common_getsockopt);
-#endif
-
int sock_common_recvmsg(struct socket *sock, struct msghdr *msg, size_t size,
int flags)
{
* Set socket options on an inet socket.
*/
int sock_common_setsockopt(struct socket *sock, int level, int optname,
- char __user *optval, unsigned int optlen)
+ sockptr_t optval, unsigned int optlen)
{
struct sock *sk = sock->sk;
}
EXPORT_SYMBOL(sock_common_setsockopt);
-#ifdef CONFIG_COMPAT
-int compat_sock_common_setsockopt(struct socket *sock, int level, int optname,
- char __user *optval, unsigned int optlen)
-{
- struct sock *sk = sock->sk;
-
- if (sk->sk_prot->compat_setsockopt != NULL)
- return sk->sk_prot->compat_setsockopt(sk, level, optname,
- optval, optlen);
- return sk->sk_prot->setsockopt(sk, level, optname, optval, optlen);
-}
-EXPORT_SYMBOL(compat_sock_common_setsockopt);
-#endif
-
void sk_common_release(struct sock *sk)
{
if (sk->sk_prot->destroy)
#ifdef CONFIG_INET
if (family == AF_INET &&
protocol != IPPROTO_RAW &&
+ protocol < MAX_INET_PROTOS &&
!rcu_access_pointer(inet_protos[protocol]))
return -ENOENT;
#endif
projects / linux-2.6-microblaze.git / blobdiff