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Cygwin: AF_UNIX: Implement listen, accept4, connect, and others

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* Implement helper functions
* Improve bind
* Implement setting blocking, ioctl(FIONBIO), fcntl(F_SETFL)
* Implement close_on_exec and fixup_after_fork
* Allow overriding sun_path and peer_sun_path
* Improve comments

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This commit is contained in:
Corinna Vinschen
2018-03-06 18:55:03 +01:00
parent e2909e2805
commit 4cd57934be
3 changed files with 775 additions and 66 deletions
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56
winsup/cygwin/fhandler.h
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@ -857,28 +857,43 @@ class fhandler_socket_unix : public fhandler_socket
NPFS_DEVICE,
NPFS_DIR
};
protected:
HANDLE file; /* Either NT symlink or reparse point */
HANDLE create_abstract_link (const sun_name_t *sun,
PUNICODE_STRING pipe_name);
HANDLE create_reparse_point (const sun_name_t *sun,
PUNICODE_STRING pipe_name);
HANDLE create_file (const sun_name_t *sun);
int open_abstract_link (sun_name_t *sun, PUNICODE_STRING pipe_name);
int open_reparse_point (sun_name_t *sun, PUNICODE_STRING pipe_name);
int open_file (sun_name_t *sun, int &type, PUNICODE_STRING pipe_name);
HANDLE autobind (sun_name_t *sun);
wchar_t get_type_char ();
void gen_pipe_name ();
void set_wait_state (DWORD wait_state);
HANDLE create_pipe ();
HANDLE create_pipe_instance ();
protected:
SRWLOCK conn_lock;
SRWLOCK bind_lock;
SRWLOCK io_lock;
HANDLE backing_file_handle; /* Either NT symlink or INVALID_HANDLE_VALUE,
if the socket is backed by a file in the
file system (actually a reparse point) */
HANDLE connect_wait_thr;
PVOID cwt_param;
LONG so_error;
sun_name_t *sun_path;
sun_name_t *peer_sun_path;
struct ucred peer_cred;
void gen_pipe_name ();
static HANDLE create_abstract_link (const sun_name_t *sun,
PUNICODE_STRING pipe_name);
static HANDLE create_reparse_point (const sun_name_t *sun,
PUNICODE_STRING pipe_name);
HANDLE create_file (const sun_name_t *sun);
static int open_abstract_link (sun_name_t *sun, PUNICODE_STRING pipe_name);
static int open_reparse_point (sun_name_t *sun, PUNICODE_STRING pipe_name);
static int open_file (sun_name_t *sun, int &type, PUNICODE_STRING pipe_name);
HANDLE autobind (sun_name_t *sun);
wchar_t get_type_char ();
void set_pipe_non_blocking (bool nonblocking);
int send_my_name ();
int recv_peer_name ();
static NTSTATUS npfs_handle (HANDLE &nph, npfs_hdl_t type);
HANDLE create_pipe ();
HANDLE create_pipe_instance ();
NTSTATUS open_pipe (HANDLE &ph, PUNICODE_STRING pipe_name);
int wait_pipe (PUNICODE_STRING pipe_name);
int connect_pipe (PUNICODE_STRING pipe_name);
int listen_pipe ();
int disconnect_pipe (HANDLE ph);
sun_name_t *get_sun_path () {return sun_path;}
sun_name_t *get_peer_sun_path () {return peer_sun_path;}
void set_sun_path (struct sockaddr_un *un, __socklen_t unlen);
@ -888,10 +903,9 @@ class fhandler_socket_unix : public fhandler_socket
void set_peer_sun_path (sun_name_t *snt)
{ snt ? set_peer_sun_path (&snt->un, snt->un_len)
: set_peer_sun_path (NULL, 0); }
protected:
struct ucred peer_cred;
void set_cred ();
void fixup_after_fork (HANDLE parent);
void set_close_on_exec (bool val);
public:
fhandler_socket_unix ();
@ -899,6 +913,8 @@ class fhandler_socket_unix : public fhandler_socket
int dup (fhandler_base *child, int);
DWORD wait_pipe_thread (PUNICODE_STRING pipe_name);
int socket (int af, int type, int protocol, int flags);
int socketpair (int af, int type, int protocol, int flags,
fhandler_socket *fh_out);