| [RFC PATCH 2/5] net: split unix_bind() [message #47536 is a reply to message #47535] |
Wed, 15 August 2012 16:22   |
Stanislav Kinsbursky
Messages: 683
Registered: October 2011
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Senior Member |
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This patch moves UNIX socket insert into separated function, because this code
will be used for unix_fbind() too.
Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
---
net/unix/af_unix.c | 52 +++++++++++++++++++++++++++++-----------------------
1 files changed, 29 insertions(+), 23 deletions(-)
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index bc90ddb..b26200d 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -814,11 +814,38 @@ fail:
return NULL;
}
+static int __unix_add_sock(struct path *path, struct sock *sk,
+ struct unix_address *addr, int hash)
+{
+ struct net *net = sock_net(sk);
+ struct unix_sock *u = unix_sk(sk);
+ struct sockaddr_un *sunaddr = addr->name;
+ char *sun_path = sunaddr->sun_path;
+ struct hlist_head *list;
+
+ if (!sun_path[0]) {
+ if (__unix_find_socket_byname(net, sunaddr, addr->len,
+ sk->sk_type, hash)) {
+ unix_release_addr(addr);
+ return -EADDRINUSE;
+ }
+
+ list = &unix_socket_table[addr->hash];
+ } else {
+ list = &unix_socket_table[path->dentry->d_inode->i_ino & (UNIX_HASH_SIZE-1)];
+ u->path = *path;
+ }
+
+ __unix_remove_socket(sk);
+ u->addr = addr;
+ __unix_insert_socket(list, sk);
+ return 0;
+
+}
static int unix_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
{
struct sock *sk = sock->sk;
- struct net *net = sock_net(sk);
struct unix_sock *u = unix_sk(sk);
struct sockaddr_un *sunaddr = (struct sockaddr_un *)uaddr;
char *sun_path = sunaddr->sun_path;
@@ -827,7 +854,6 @@ static int unix_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
int err;
unsigned int hash;
struct unix_address *addr;
- struct hlist_head *list;
err = -EINVAL;
if (sunaddr->sun_family != AF_UNIX)
@@ -893,27 +919,7 @@ static int unix_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
}
spin_lock(&unix_table_lock);
-
- err = -EADDRINUSE;
- if (!sun_path[0]) {
- if (__unix_find_socket_byname(net, sunaddr, addr->len,
- sk->sk_type, hash)) {
- unix_release_addr(addr);
- goto out_unlock;
- }
-
- list = &unix_socket_table[addr->hash];
- } else {
- list = &unix_socket_table[path.dentry->d_inode->i_ino & (UNIX_HASH_SIZE-1)];
- u->path = path;
- }
-
- err = 0;
- __unix_remove_socket(sk);
- u->addr = addr;
- __unix_insert_socket(list, sk);
-
-out_unlock:
+ err = __unix_add_sock(&path, sk, addr, hash);
spin_unlock(&unix_table_lock);
out_up:
mutex_unlock(&u->readlock);
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