static int
unix_proto_release(struct socket *sock, struct socket *peer)
{
struct unix_proto_data *upd = UN_DATA(sock);
PRINTK("unix_proto_release: socket 0x%x, unix_data 0x%x\n",
sock, upd);
if (!upd)
return 0;
if (upd->socket != sock) {
printk("unix_proto_release: socket link mismatch!\n");
return -EINVAL;
}
if (upd->inode) {
PRINTK("unix_proto_release: releasing inode 0x%x\n",
upd->inode);
iput(upd->inode);
upd->inode = NULL;
}
UN_DATA(sock) = NULL;
upd->socket = NULL;
if (upd->peerupd)
unix_data_deref(upd->peerupd);
unix_data_deref(upd);
return 0;
}
static int unix_release(struct socket *sock, struct socket *peer)
{
struct unix_proto_data *upd = sock->data;
if (!upd)
return 0;
if (upd->socket != sock) {
printk("UNIX: release: socket link mismatch!\n");
return -EINVAL;
}
if (upd->inode) {
iput(upd->inode);
upd->inode = NULL;
}
sock->data = NULL;
upd->socket = NULL;
if (upd->peerupd)
unix_data_deref(upd->peerupd);
unix_data_deref(upd);
return 0;
}
/*
* upon a create, we allocate an empty protocol data, and grab a page to
* buffer writes
*/
static int
unix_proto_create(struct socket *sock, int protocol)
{
struct unix_proto_data *upd;
PRINTK("unix_proto_create: socket 0x%x, proto %d\n", sock, protocol);
if (protocol != 0) {
PRINTK("unix_proto_create: protocol != 0\n");
return -EINVAL;
}
if (!(upd = unix_data_alloc())) {
printk("unix_proto_create: can't allocate buffer\n");
return -ENOMEM;
}
if (!(upd->buf = (char *)get_free_page())) {
printk("unix_proto_create: can't get page!\n");
unix_data_deref(upd);
return -ENOMEM;
}
upd->protocol = protocol;
upd->socket = sock;
UN_DATA(sock) = upd;
PRINTK("unix_proto_create: allocated data 0x%x\n", upd);
return 0;
}