Merge 4.4.177 into android-4.4-p

[sagit-ice-cold/kernel_xiaomi_msm8998.git] / net / socket.c

diff --git a/net/socket.c b/net/socket.c
index 5b31e5b..c3544d7 100644 (file)
--- a/net/socket.c
+++ b/net/socket.c
@@ -89,6 +89,7 @@
 #include <linux/magic.h>
 #include <linux/slab.h>
 #include <linux/xattr.h>
+#include <linux/nospec.h>
 
 #include <asm/uaccess.h>
 #include <asm/unistd.h>
@@ -469,27 +470,15 @@ static struct socket *sockfd_lookup_light(int fd, int *err, int *fput_needed)
 static ssize_t sockfs_getxattr(struct dentry *dentry,
                               const char *name, void *value, size_t size)
 {
-       const char *proto_name;
-       size_t proto_size;
-       int error;
-
-       error = -ENODATA;
-       if (!strncmp(name, XATTR_NAME_SOCKPROTONAME, XATTR_NAME_SOCKPROTONAME_LEN)) {
-               proto_name = dentry->d_name.name;
-               proto_size = strlen(proto_name);
-
+       if (!strcmp(name, XATTR_NAME_SOCKPROTONAME)) {
                if (value) {
-                       error = -ERANGE;
-                       if (proto_size + 1 > size)
-                               goto out;
-
-                       strncpy(value, proto_name, proto_size + 1);
+                       if (dentry->d_name.len + 1 > size)
+                               return -ERANGE;
+                       memcpy(value, dentry->d_name.name, dentry->d_name.len + 1);
                }
-               error = proto_size + 1;
+               return dentry->d_name.len + 1;
        }
-
-out:
-       return error;
+       return -EOPNOTSUPP;
 }
 
 static ssize_t sockfs_listxattr(struct dentry *dentry, char *buffer,
@@ -520,9 +509,23 @@ static ssize_t sockfs_listxattr(struct dentry *dentry, char *buffer,
        return used;
 }
 
+static int sockfs_setattr(struct dentry *dentry, struct iattr *iattr)
+{
+       int err = simple_setattr(dentry, iattr);
+
+       if (!err && (iattr->ia_valid & ATTR_UID)) {
+               struct socket *sock = SOCKET_I(d_inode(dentry));
+
+               sock->sk->sk_uid = iattr->ia_uid;
+       }
+
+       return err;
+}
+
 static const struct inode_operations sockfs_inode_ops = {
        .getxattr = sockfs_getxattr,
        .listxattr = sockfs_listxattr,
+       .setattr = sockfs_setattr,
 };
 
 /**
@@ -2324,6 +2327,7 @@ SYSCALL_DEFINE2(socketcall, int, call, unsigned long __user *, args)
 
        if (call < 1 || call > SYS_SENDMMSG)
                return -EINVAL;
+       call = array_index_nospec(call, SYS_SENDMMSG + 1);
 
        len = nargs[call];
        if (len > sizeof(a))
@@ -2758,9 +2762,14 @@ static int ethtool_ioctl(struct net *net, struct compat_ifreq __user *ifr32)
                    copy_in_user(&rxnfc->fs.ring_cookie,
                                 &compat_rxnfc->fs.ring_cookie,
                                 (void __user *)(&rxnfc->fs.location + 1) -
-                                (void __user *)&rxnfc->fs.ring_cookie) ||
-                   copy_in_user(&rxnfc->rule_cnt, &compat_rxnfc->rule_cnt,
-                                sizeof(rxnfc->rule_cnt)))
+                                (void __user *)&rxnfc->fs.ring_cookie))
+                       return -EFAULT;
+               if (ethcmd == ETHTOOL_GRXCLSRLALL) {
+                       if (put_user(rule_cnt, &rxnfc->rule_cnt))
+                               return -EFAULT;
+               } else if (copy_in_user(&rxnfc->rule_cnt,
+                                       &compat_rxnfc->rule_cnt,
+                                       sizeof(rxnfc->rule_cnt)))
                        return -EFAULT;
        }