1// SPDX-License-Identifier: GPL-2.0-only
 2/*
 3 * VMware vSockets Driver
 4 *
 5 * Copyright (C) 2007-2012 VMware, Inc. All rights reserved.
 6 */
 7
 8#include <linux/types.h>
 9#include <linux/socket.h>
10#include <linux/stddef.h>
11#include <net/sock.h>
12#include <net/vsock_addr.h>
13
14void vsock_addr_init(struct sockaddr_vm *addr, u32 cid, u32 port)
15{
16	memset(addr, 0, sizeof(*addr));
17	addr->svm_family = AF_VSOCK;
18	addr->svm_cid = cid;
19	addr->svm_port = port;
20}
21EXPORT_SYMBOL_GPL(vsock_addr_init);
22
23int vsock_addr_validate(const struct sockaddr_vm *addr)
24{
25	__u8 svm_valid_flags = VMADDR_FLAG_TO_HOST;
26
27	if (!addr)
28		return -EFAULT;
29
30	if (addr->svm_family != AF_VSOCK)
31		return -EAFNOSUPPORT;
32
33	if (addr->svm_flags & ~svm_valid_flags)
34		return -EINVAL;
35
36	return 0;
37}
38EXPORT_SYMBOL_GPL(vsock_addr_validate);
39
40bool vsock_addr_bound(const struct sockaddr_vm *addr)
41{
42	return addr->svm_port != VMADDR_PORT_ANY;
43}
44EXPORT_SYMBOL_GPL(vsock_addr_bound);
45
46void vsock_addr_unbind(struct sockaddr_vm *addr)
47{
48	vsock_addr_init(addr, VMADDR_CID_ANY, VMADDR_PORT_ANY);
49}
50EXPORT_SYMBOL_GPL(vsock_addr_unbind);
51
52bool vsock_addr_equals_addr(const struct sockaddr_vm *addr,
53			    const struct sockaddr_vm *other)
54{
55	return addr->svm_cid == other->svm_cid &&
56		addr->svm_port == other->svm_port;
57}
58EXPORT_SYMBOL_GPL(vsock_addr_equals_addr);
59
60int vsock_addr_cast(const struct sockaddr *addr,
61		    size_t len, struct sockaddr_vm **out_addr)
62{
63	if (len < sizeof(**out_addr))
64		return -EFAULT;
65
66	*out_addr = (struct sockaddr_vm *)addr;
67	return vsock_addr_validate(*out_addr);
68}
69EXPORT_SYMBOL_GPL(vsock_addr_cast);

 1// SPDX-License-Identifier: GPL-2.0-only
 2/*
 3 * VMware vSockets Driver
 4 *
 5 * Copyright (C) 2007-2012 VMware, Inc. All rights reserved.
 6 */
 7
 8#include <linux/types.h>
 9#include <linux/socket.h>
10#include <linux/stddef.h>
11#include <net/sock.h>
12#include <net/vsock_addr.h>
13
14void vsock_addr_init(struct sockaddr_vm *addr, u32 cid, u32 port)
15{
16	memset(addr, 0, sizeof(*addr));
17	addr->svm_family = AF_VSOCK;
18	addr->svm_cid = cid;
19	addr->svm_port = port;
20}
21EXPORT_SYMBOL_GPL(vsock_addr_init);
22
23int vsock_addr_validate(const struct sockaddr_vm *addr)
24{
25	__u8 svm_valid_flags = VMADDR_FLAG_TO_HOST;
26
27	if (!addr)
28		return -EFAULT;
29
30	if (addr->svm_family != AF_VSOCK)
31		return -EAFNOSUPPORT;
32
33	if (addr->svm_flags & ~svm_valid_flags)
34		return -EINVAL;
35
36	return 0;
37}
38EXPORT_SYMBOL_GPL(vsock_addr_validate);
39
40bool vsock_addr_bound(const struct sockaddr_vm *addr)
41{
42	return addr->svm_port != VMADDR_PORT_ANY;
43}
44EXPORT_SYMBOL_GPL(vsock_addr_bound);
45
46void vsock_addr_unbind(struct sockaddr_vm *addr)
47{
48	vsock_addr_init(addr, VMADDR_CID_ANY, VMADDR_PORT_ANY);
49}
50EXPORT_SYMBOL_GPL(vsock_addr_unbind);
51
52bool vsock_addr_equals_addr(const struct sockaddr_vm *addr,
53			    const struct sockaddr_vm *other)
54{
55	return addr->svm_cid == other->svm_cid &&
56		addr->svm_port == other->svm_port;
57}
58EXPORT_SYMBOL_GPL(vsock_addr_equals_addr);
59
60int vsock_addr_cast(const struct sockaddr *addr,
61		    size_t len, struct sockaddr_vm **out_addr)
62{
63	if (len < sizeof(**out_addr))
64		return -EFAULT;
65
66	*out_addr = (struct sockaddr_vm *)addr;
67	return vsock_addr_validate(*out_addr);
68}
69EXPORT_SYMBOL_GPL(vsock_addr_cast);