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socket: add support for binding sockets to device

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As a Linux-specific feature, allow sockets to be bound to a device using
the SO_BINDTODEVICE socket option. The CAP_NET_RAW capability is
required for setting the option.
This commit is contained in:
Miroslav Lichvar
2020-06-30 10:21:45 +02:00
parent 0f04baeb97
commit 4ef944b734
9 changed files with 45 additions and 20 deletions
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8
socket.h
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@@ -92,9 +92,11 @@ extern void SCK_GetLoopbackIPAddress(int family, IPAddr *local_addr);
extern void SCK_SetPrivBind(int (*function)(int sock_fd, struct sockaddr *address,
socklen_t address_len));
/* Open socket */
extern int SCK_OpenUdpSocket(IPSockAddr *remote_addr, IPSockAddr *local_addr, int flags);
extern int SCK_OpenTcpSocket(IPSockAddr *remote_addr, IPSockAddr *local_addr, int flags);
/* Open a socket (addresses and iface may be NULL) */
extern int SCK_OpenUdpSocket(IPSockAddr *remote_addr, IPSockAddr *local_addr,
const char *iface, int flags);
extern int SCK_OpenTcpSocket(IPSockAddr *remote_addr, IPSockAddr *local_addr,
const char *iface, int flags);
extern int SCK_OpenUnixDatagramSocket(const char *remote_addr, const char *local_addr,
int flags);
extern int SCK_OpenUnixStreamSocket(const char *remote_addr, const char *local_addr,