1 // SPDX-License-Identifier: GPL-2.0-only 1 // SPDX-License-Identifier: GPL-2.0-only
2 /* 2 /*
3 * VMware vSockets Driver 3 * VMware vSockets Driver
4 * 4 *
5 * Copyright (C) 2007-2012 VMware, Inc. All ri 5 * Copyright (C) 2007-2012 VMware, Inc. All rights reserved.
6 */ 6 */
7 7
8 #include <linux/types.h> 8 #include <linux/types.h>
9 #include <linux/socket.h> 9 #include <linux/socket.h>
10 #include <linux/stddef.h> 10 #include <linux/stddef.h>
11 #include <net/sock.h> 11 #include <net/sock.h>
12 #include <net/vsock_addr.h> 12 #include <net/vsock_addr.h>
13 13
14 void vsock_addr_init(struct sockaddr_vm *addr, 14 void vsock_addr_init(struct sockaddr_vm *addr, u32 cid, u32 port)
15 { 15 {
16 memset(addr, 0, sizeof(*addr)); 16 memset(addr, 0, sizeof(*addr));
17 addr->svm_family = AF_VSOCK; 17 addr->svm_family = AF_VSOCK;
18 addr->svm_cid = cid; 18 addr->svm_cid = cid;
19 addr->svm_port = port; 19 addr->svm_port = port;
20 } 20 }
21 EXPORT_SYMBOL_GPL(vsock_addr_init); 21 EXPORT_SYMBOL_GPL(vsock_addr_init);
22 22
23 int vsock_addr_validate(const struct sockaddr_ 23 int vsock_addr_validate(const struct sockaddr_vm *addr)
24 { 24 {
25 __u8 svm_valid_flags = VMADDR_FLAG_TO_ 25 __u8 svm_valid_flags = VMADDR_FLAG_TO_HOST;
26 26
27 if (!addr) 27 if (!addr)
28 return -EFAULT; 28 return -EFAULT;
29 29
30 if (addr->svm_family != AF_VSOCK) 30 if (addr->svm_family != AF_VSOCK)
31 return -EAFNOSUPPORT; 31 return -EAFNOSUPPORT;
32 32
33 if (addr->svm_flags & ~svm_valid_flags 33 if (addr->svm_flags & ~svm_valid_flags)
34 return -EINVAL; 34 return -EINVAL;
35 35
36 return 0; 36 return 0;
37 } 37 }
38 EXPORT_SYMBOL_GPL(vsock_addr_validate); 38 EXPORT_SYMBOL_GPL(vsock_addr_validate);
39 39
40 bool vsock_addr_bound(const struct sockaddr_vm 40 bool vsock_addr_bound(const struct sockaddr_vm *addr)
41 { 41 {
42 return addr->svm_port != VMADDR_PORT_A 42 return addr->svm_port != VMADDR_PORT_ANY;
43 } 43 }
44 EXPORT_SYMBOL_GPL(vsock_addr_bound); 44 EXPORT_SYMBOL_GPL(vsock_addr_bound);
45 45
46 void vsock_addr_unbind(struct sockaddr_vm *add 46 void vsock_addr_unbind(struct sockaddr_vm *addr)
47 { 47 {
48 vsock_addr_init(addr, VMADDR_CID_ANY, 48 vsock_addr_init(addr, VMADDR_CID_ANY, VMADDR_PORT_ANY);
49 } 49 }
50 EXPORT_SYMBOL_GPL(vsock_addr_unbind); 50 EXPORT_SYMBOL_GPL(vsock_addr_unbind);
51 51
52 bool vsock_addr_equals_addr(const struct socka 52 bool vsock_addr_equals_addr(const struct sockaddr_vm *addr,
53 const struct socka 53 const struct sockaddr_vm *other)
54 { 54 {
55 return addr->svm_cid == other->svm_cid 55 return addr->svm_cid == other->svm_cid &&
56 addr->svm_port == other->svm_p 56 addr->svm_port == other->svm_port;
57 } 57 }
58 EXPORT_SYMBOL_GPL(vsock_addr_equals_addr); 58 EXPORT_SYMBOL_GPL(vsock_addr_equals_addr);
59 59
60 int vsock_addr_cast(const struct sockaddr *add 60 int vsock_addr_cast(const struct sockaddr *addr,
61 size_t len, struct sockadd 61 size_t len, struct sockaddr_vm **out_addr)
62 { 62 {
63 if (len < sizeof(**out_addr)) 63 if (len < sizeof(**out_addr))
64 return -EFAULT; 64 return -EFAULT;
65 65
66 *out_addr = (struct sockaddr_vm *)addr 66 *out_addr = (struct sockaddr_vm *)addr;
67 return vsock_addr_validate(*out_addr); 67 return vsock_addr_validate(*out_addr);
68 } 68 }
69 EXPORT_SYMBOL_GPL(vsock_addr_cast); 69 EXPORT_SYMBOL_GPL(vsock_addr_cast);
70 70
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.