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Add setsockopt(sd, SOL_SOCKET, SO_PEERCRED, NULL, 0) to disable

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initial handshake on AF_LOCAL sockets.
	* fhandler.h (class fhandler_socket): Add no_getpeereid status flag.
	(fhandler_socket::af_local_set_no_getpeereid): New prototype.
	* fhandler_socket.cc (fhandler_socket::af_local_connect): Skip handshake
	if no_getpeereid is set.  Add debug output.
	(fhandler_socket::af_local_accept): Likewise.
	(fhandler_socket::af_local_set_no_getpeereid): New function.
	(fhandler_socket::af_local_copy): Copy no_getpeereid.
	(fhandler_socket::getpeereid): Fail if no_getpeereid is set.
	* net.cc (cygwin_setsockopt): Add SO_PEERCRED for AF_LOCAL/SOCK_STREAM
	sockets.  Add comment to explain why we need it.
	* include/cygwin/version.h (CYGWIN_VERSION_API_MINOR): Bump.
This commit is contained in:
Corinna Vinschen
2014-10-11 18:28:04 +00:00
parent a85ab1d482
commit 697b9afe00
5 changed files with 74 additions and 4 deletions
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5
winsup/cygwin/fhandler.h
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@ -504,6 +504,7 @@ class fhandler_socket: public fhandler_base
int af_local_accept ();
public:
int af_local_connect ();
int af_local_set_no_getpeereid ();
void af_local_set_sockpair_cred ();
private:
@ -531,10 +532,11 @@ class fhandler_socket: public fhandler_base
unsigned saw_shutdown_write : 1; /* Socket saw a SHUT_WR */
unsigned saw_reuseaddr : 1; /* Socket saw SO_REUSEADDR call */
unsigned connect_state : 3;
unsigned no_getpeereid : 1;
public:
status_flags () :
async_io (0), saw_shutdown_read (0), saw_shutdown_write (0),
connect_state (unconnected)
connect_state (unconnected), no_getpeereid (0)
{}
} status;
@ -556,6 +558,7 @@ class fhandler_socket: public fhandler_base
IMPLEMENT_STATUS_FLAG (bool, saw_shutdown_write)
IMPLEMENT_STATUS_FLAG (bool, saw_reuseaddr)
IMPLEMENT_STATUS_FLAG (conn_state, connect_state)
IMPLEMENT_STATUS_FLAG (bool, no_getpeereid)
int bind (const struct sockaddr *name, int namelen);
int connect (const struct sockaddr *name, int namelen);