mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-15 00:04:15 +08:00
cada7ccd9d
Check if the provided flags value from the vsock address data structure includes the supported flags in the corresponding kernel version. The first byte of the "svm_zero" field is used as "svm_flags", so add the flags check instead. Changelog v3 -> v4 * New patch in v4. Signed-off-by: Andra Paraschiv <andraprs@amazon.com> Reviewed-by: Stefano Garzarella <sgarzare@redhat.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
70 lines
1.5 KiB
C
70 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* VMware vSockets Driver
|
|
*
|
|
* Copyright (C) 2007-2012 VMware, Inc. All rights reserved.
|
|
*/
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/socket.h>
|
|
#include <linux/stddef.h>
|
|
#include <net/sock.h>
|
|
#include <net/vsock_addr.h>
|
|
|
|
void vsock_addr_init(struct sockaddr_vm *addr, u32 cid, u32 port)
|
|
{
|
|
memset(addr, 0, sizeof(*addr));
|
|
addr->svm_family = AF_VSOCK;
|
|
addr->svm_cid = cid;
|
|
addr->svm_port = port;
|
|
}
|
|
EXPORT_SYMBOL_GPL(vsock_addr_init);
|
|
|
|
int vsock_addr_validate(const struct sockaddr_vm *addr)
|
|
{
|
|
__u8 svm_valid_flags = VMADDR_FLAG_TO_HOST;
|
|
|
|
if (!addr)
|
|
return -EFAULT;
|
|
|
|
if (addr->svm_family != AF_VSOCK)
|
|
return -EAFNOSUPPORT;
|
|
|
|
if (addr->svm_flags & ~svm_valid_flags)
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(vsock_addr_validate);
|
|
|
|
bool vsock_addr_bound(const struct sockaddr_vm *addr)
|
|
{
|
|
return addr->svm_port != VMADDR_PORT_ANY;
|
|
}
|
|
EXPORT_SYMBOL_GPL(vsock_addr_bound);
|
|
|
|
void vsock_addr_unbind(struct sockaddr_vm *addr)
|
|
{
|
|
vsock_addr_init(addr, VMADDR_CID_ANY, VMADDR_PORT_ANY);
|
|
}
|
|
EXPORT_SYMBOL_GPL(vsock_addr_unbind);
|
|
|
|
bool vsock_addr_equals_addr(const struct sockaddr_vm *addr,
|
|
const struct sockaddr_vm *other)
|
|
{
|
|
return addr->svm_cid == other->svm_cid &&
|
|
addr->svm_port == other->svm_port;
|
|
}
|
|
EXPORT_SYMBOL_GPL(vsock_addr_equals_addr);
|
|
|
|
int vsock_addr_cast(const struct sockaddr *addr,
|
|
size_t len, struct sockaddr_vm **out_addr)
|
|
{
|
|
if (len < sizeof(**out_addr))
|
|
return -EFAULT;
|
|
|
|
*out_addr = (struct sockaddr_vm *)addr;
|
|
return vsock_addr_validate(*out_addr);
|
|
}
|
|
EXPORT_SYMBOL_GPL(vsock_addr_cast);
|