};
+/**
+ * Test if the given protocol family is supported by this system.
+ *
+ * @param pf protocol family to test (PF_INET, PF_INET6, PF_UNIX)
+ * @return GNUNET_OK if the PF is supported
+ */
+int
+GNUNET_NETWORK_test_pf (int pf)
+{
+ int s;
+
+ s = socket (pf, SOCK_STREAM, 0);
+ if (-1 == s)
+ {
+ if (EAFNOSUPPORT == errno)
+ return GNUNET_NO;
+ fprintf (stderr, "Failed to create test socket: %s\n", STRERROR (errno));
+ return GNUNET_SYSERR;
+ }
+#if WINDOWS
+ closesocket (s);
+#else
+ close (s);
+#endif
+ return GNUNET_OK;
+}
+
+
/**
* Given a unixpath that is too long (larger than UNIX_PATH_MAX),
* shorten it to an acceptable length while keeping it unique
/**
* Set if a socket should use blocking or non-blocking IO.
+ *
* @param fd socket
* @param doBlock blocking mode
* @return GNUNET_OK on success, GNUNET_SYSERR on error
*/
-static int
-socket_set_blocking (struct GNUNET_NETWORK_Handle *fd, int doBlock)
+int
+GNUNET_NETWORK_socket_set_blocking (struct GNUNET_NETWORK_Handle *fd, int doBlock)
{
#if MINGW
}
-#ifndef MINGW
/**
* Make a socket non-inheritable to child processes
*
static int
socket_set_inheritable (const struct GNUNET_NETWORK_Handle *h)
{
+#ifndef MINGW
int i;
-
i = fcntl (h->fd, F_GETFD);
if (i < 0)
return GNUNET_SYSERR;
i |= FD_CLOEXEC;
if (fcntl (h->fd, F_SETFD, i) < 0)
return GNUNET_SYSERR;
+#else
+ BOOL b;
+ SetLastError (0);
+ b = SetHandleInformation (h->fd, HANDLE_FLAG_INHERIT, 0);
+ if (!b)
+ {
+ SetErrnoFromWinsockError (WSAGetLastError ());
+ return GNUNET_SYSERR;
+ }
+#endif
return GNUNET_OK;
}
-#endif
#ifdef DARWIN
errno = EMFILE;
return GNUNET_SYSERR;
}
+#endif
if (GNUNET_OK != socket_set_inheritable (h))
LOG_STRERROR (GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
"socket_set_inheritable");
-#endif
- if (GNUNET_SYSERR == socket_set_blocking (h, GNUNET_NO))
+
+ if (GNUNET_SYSERR == GNUNET_NETWORK_socket_set_blocking (h, GNUNET_NO))
{
GNUNET_break (0);
GNUNET_break (GNUNET_OK == GNUNET_NETWORK_socket_close (h));
GNUNET_NETWORK_fdset_add (struct GNUNET_NETWORK_FDSet *dst,
const struct GNUNET_NETWORK_FDSet *src)
{
+#ifndef MINGW
int nfds;
for (nfds = src->nsds; nfds > 0; nfds--)
if (nfds + 1 > dst->nsds)
dst->nsds = nfds + 1;
}
-#ifdef MINGW
+#else
+ /* This is MinGW32-specific implementation that relies on the code that
+ * winsock2.h defines for FD_SET. Namely, it relies on FD_SET checking
+ * that fd being added is not already in the set.
+ * Also relies on us knowing what's inside fd_set (fd_count and fd_array).
+ */
+ int i;
+ for (i = 0; i < src->sds.fd_count; i++)
+ FD_SET (src->sds.fd_array[i], &dst->sds);
+ if (src->nsds > dst->nsds)
+ dst->nsds = src->nsds;
+
GNUNET_CONTAINER_slist_append (dst->handles, src->handles);
#endif
}
}
#if MINGW
-struct _select_params\r
-{\r
- fd_set *r;\r
- fd_set *w;\r
- fd_set *e;\r
- struct timeval *tv;\r
- HANDLE wakeup;\r
- HANDLE standby;\r
- SOCKET wakeup_socket;\r
- int status;\r
-};\r
-
-static DWORD WINAPI\r
-_selector (LPVOID p)\r
-{\r
- struct _select_params *sp = p;\r
- int i;\r
- while (1)\r
- {\r
- WaitForSingleObject (sp->standby, INFINITE);\r
- ResetEvent (sp->standby);\r
- sp->status = select (1, sp->r, sp->w, sp->e, sp->tv);\r
- if (FD_ISSET (sp->wakeup_socket, sp->r))\r
- {\r
- FD_CLR (sp->wakeup_socket, sp->r);\r
- sp->status -= 1;\r
- }\r
- SetEvent (sp->wakeup);\r
- }\r
- return 0;\r
-}\r
+struct _select_params
+{
+ fd_set *r;
+ fd_set *w;
+ fd_set *e;
+ struct timeval *tv;
+ HANDLE wakeup;
+ HANDLE standby;
+ SOCKET wakeup_socket;
+ int status;
+};
+
+static DWORD WINAPI
+_selector (LPVOID p)
+{
+ struct _select_params *sp = p;
+ int i;
+ while (1)
+ {
+ WaitForSingleObject (sp->standby, INFINITE);
+ ResetEvent (sp->standby);
+ sp->status = select (1, sp->r, sp->w, sp->e, sp->tv);
+ if (FD_ISSET (sp->wakeup_socket, sp->r))
+ {
+ FD_CLR (sp->wakeup_socket, sp->r);
+ sp->status -= 1;
+ }
+ SetEvent (sp->wakeup);
+ }
+ return 0;
+}
#endif
/**
static HANDLE hEventPipeWrite = 0;
static HANDLE hEventReadReady = 0;
- static struct _select_params sp;\r
+ static struct _select_params sp;
static HANDLE select_thread = NULL;
static HANDLE select_finished_event = NULL;
static HANDLE select_standby_event = NULL;
- static SOCKET select_wakeup_socket = -1;\r
- static SOCKET select_send_socket = -1;\r
+ static SOCKET select_wakeup_socket = -1;
+ static SOCKET select_send_socket = -1;
static struct timeval select_timeout;
-\r
+
int readPipes = 0;
int writePipePos = 0;
struct GNUNET_CONTAINER_SList *handles_write;
struct GNUNET_CONTAINER_SList *handles_except;
+ int selectret = 0;
+
fd_set aread;
fd_set awrite;
fd_set aexcept;
#endif
)
{
+ GNUNET_break (0);
LOG (GNUNET_ERROR_TYPE_ERROR,
_
("Fatal internal logic error, process hangs in `%s' (abort with CTRL-C)!\n"),
"select");
- GNUNET_break (0);
}
#ifndef MINGW
tv.tv_sec = timeout.rel_value / GNUNET_TIME_UNIT_SECONDS.rel_value;
if (select_thread == NULL)
{
- SOCKET select_listening_socket = -1;\r
- struct sockaddr_in s_in;\r
- int alen;\r
- int res;\r
- unsigned long p;\r
-
- select_standby_event = CreateEvent (NULL, TRUE, FALSE, NULL);\r
- select_finished_event = CreateEvent (NULL, TRUE, FALSE, NULL);\r
-
- select_wakeup_socket = WSASocket (AF_INET, SOCK_STREAM, IPPROTO_TCP, NULL, 0, WSA_FLAG_OVERLAPPED);\r
-\r
- select_listening_socket = WSASocket (AF_INET, SOCK_STREAM, IPPROTO_TCP, NULL, 0, WSA_FLAG_OVERLAPPED);\r
-\r
- p = 1;\r
- res = ioctlsocket (select_wakeup_socket, FIONBIO, &p);\r
-\r
- alen = sizeof (s_in);\r
- s_in.sin_family = AF_INET;\r
- s_in.sin_port = 0;\r
- s_in.sin_addr.S_un.S_un_b.s_b1 = 127;\r
- s_in.sin_addr.S_un.S_un_b.s_b2 = 0;\r
- s_in.sin_addr.S_un.S_un_b.s_b3 = 0;\r
- s_in.sin_addr.S_un.S_un_b.s_b4 = 1;\r
- res = bind (select_listening_socket, (const struct sockaddr *) &s_in, sizeof (s_in));\r
-\r
- res = getsockname (select_listening_socket, (struct sockaddr *) &s_in, &alen);\r
-\r
- res = listen (select_listening_socket, SOMAXCONN);\r
-\r
- res = connect (select_wakeup_socket, (const struct sockaddr *) &s_in, sizeof (s_in));\r
-\r
- select_send_socket = accept (select_listening_socket, (struct sockaddr *) &s_in, &alen);\r
-\r
- closesocket (select_listening_socket);\r
-\r
- sp.wakeup = select_finished_event;\r
- sp.standby = select_standby_event;\r
+ SOCKET select_listening_socket = -1;
+ struct sockaddr_in s_in;
+ int alen;
+ int res;
+ unsigned long p;
+
+ select_standby_event = CreateEvent (NULL, TRUE, FALSE, NULL);
+ select_finished_event = CreateEvent (NULL, TRUE, FALSE, NULL);
+
+ select_wakeup_socket = WSASocket (AF_INET, SOCK_STREAM, IPPROTO_TCP, NULL, 0, WSA_FLAG_OVERLAPPED);
+
+ select_listening_socket = WSASocket (AF_INET, SOCK_STREAM, IPPROTO_TCP, NULL, 0, WSA_FLAG_OVERLAPPED);
+
+ p = 1;
+ res = ioctlsocket (select_wakeup_socket, FIONBIO, &p);
+
+ alen = sizeof (s_in);
+ s_in.sin_family = AF_INET;
+ s_in.sin_port = 0;
+ s_in.sin_addr.S_un.S_un_b.s_b1 = 127;
+ s_in.sin_addr.S_un.S_un_b.s_b2 = 0;
+ s_in.sin_addr.S_un.S_un_b.s_b3 = 0;
+ s_in.sin_addr.S_un.S_un_b.s_b4 = 1;
+ res = bind (select_listening_socket, (const struct sockaddr *) &s_in, sizeof (s_in));
+
+ res = getsockname (select_listening_socket, (struct sockaddr *) &s_in, &alen);
+
+ res = listen (select_listening_socket, SOMAXCONN);
+
+ res = connect (select_wakeup_socket, (const struct sockaddr *) &s_in, sizeof (s_in));
+
+ select_send_socket = accept (select_listening_socket, (struct sockaddr *) &s_in, &alen);
+
+ closesocket (select_listening_socket);
+
+ sp.wakeup = select_finished_event;
+ sp.standby = select_standby_event;
sp.wakeup_socket = select_wakeup_socket;
-\r
- select_thread = CreateThread (NULL, 0, _selector, &sp, 0, NULL);\r
+
+ select_thread = CreateThread (NULL, 0, _selector, &sp, 0, NULL);
+ }
+
+
+ handles_read = GNUNET_CONTAINER_slist_create ();
+ handles_write = GNUNET_CONTAINER_slist_create ();
+ handles_except = GNUNET_CONTAINER_slist_create ();
+ FD_ZERO (&aread);
+ FD_ZERO (&awrite);
+ FD_ZERO (&aexcept);
+#if DEBUG_NETWORK
+ FD_ZERO (&bread);
+ FD_ZERO (&bwrite);
+ FD_ZERO (&bexcept);
+#endif
+ if (rfds)
+ {
+ FD_COPY (&rfds->sds, &aread);
+#if DEBUG_NETWORK
+ FD_COPY (&rfds->sds, &bread);
+#endif
+ }
+ if (wfds)
+ {
+ FD_COPY (&wfds->sds, &awrite);
+#if DEBUG_NETWORK
+ FD_COPY (&wfds->sds, &bwrite);
+#endif
+ }
+ if (efds)
+ {
+ FD_COPY (&efds->sds, &aexcept);
+#if DEBUG_NETWORK
+ FD_COPY (&efds->sds, &bexcept);
+#endif
+ }
+
+ /* Start by doing a fast check on sockets and pipes (without waiting). It is cheap, and is sufficient most of the time.
+ By profiling we detected that to be true in 90% of the cases.
+ */
+
+ /* Do the select now */
+ select_timeout.tv_sec = 0;
+ select_timeout.tv_usec = 0;
+
+ /* Copy all the writes to the except, so we can detect connect() errors */
+ for (i = 0; i < awrite.fd_count; i++)
+ FD_SET (awrite.fd_array[i], &aexcept);
+ if (aread.fd_count > 0 || awrite.fd_count > 0 || aexcept.fd_count > 0)
+ selectret = select (1, (rfds != NULL) ? &aread : NULL,
+ (wfds != NULL) ? &awrite : NULL, &aexcept, &select_timeout);
+ else
+ selectret = 0;
+ if (selectret == -1)
+ {
+ /* Throw an error early on, while we still have the context. */
+ LOG (GNUNET_ERROR_TYPE_ERROR, "W32 select(%d, %d, %d) failed: %lu\n",
+ rfds ? aread.fd_count : 0, wfds ? awrite.fd_count : 0, aexcept.fd_count, GetLastError ());
+ GNUNET_abort ();
+ }
+
+ /* Check aexcept, add its contents to awrite
+ This is technically wrong (aexcept might have its own descriptors), we should
+ have checked that descriptors were in awrite originally before re-adding them from
+ aexcept. Luckily, GNUnet never uses aexcept for anything, so this does not become a problem (yet). */
+ for (i = 0; i < aexcept.fd_count; i++)
+ FD_SET (aexcept.fd_array[i], &awrite);
+
+ /* If our select returned something or is a 0-timed request, then also check the pipes and get out of here! */
+ /* Sadly, it means code duplication :( */
+ if ((selectret > 0) || (ms_total == 0))
+ {
+ /* Read Pipes */
+ if (rfds && read_handles)
+ {
+ struct GNUNET_CONTAINER_SList_Iterator i;
+
+ for (i = GNUNET_CONTAINER_slist_begin (rfds->handles);
+ GNUNET_CONTAINER_slist_end (&i) != GNUNET_YES;
+ GNUNET_CONTAINER_slist_next (&i))
+ {
+ struct GNUNET_DISK_FileHandle *fh;
+
+ fh = (struct GNUNET_DISK_FileHandle *) GNUNET_CONTAINER_slist_get (&i,NULL);
+ if (fh->type == GNUNET_DISK_HANLDE_TYPE_PIPE)
+ {
+ DWORD error;
+ BOOL bret;
+
+ SetLastError (0);
+ DWORD waitstatus = 0;
+ bret = PeekNamedPipe (fh->h, NULL, 0, NULL, &waitstatus, NULL);
+ error = GetLastError ();
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "Peek at read pipe %d (0x%x) returned %d (%d bytes available) GLE %u\n",
+ i, fh->h, bret, waitstatus, error);
+ if (bret == 0)
+ {
+ /* TODO: either add more errors to this condition, or eliminate it
+ * entirely (failed to peek -> pipe is in serious trouble, should
+ * be selected as readable).
+ */
+ if (error != ERROR_BROKEN_PIPE && error != ERROR_INVALID_HANDLE)
+ continue;
+ }
+ else if (waitstatus <= 0)
+ continue;
+ GNUNET_CONTAINER_slist_add (handles_read, GNUNET_CONTAINER_SLIST_DISPOSITION_TRANSIENT,
+ fh, sizeof (struct GNUNET_DISK_FileHandle));
+ retcode++;
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "Added read Pipe 0x%x (0x%x)\n",
+ fh, fh->h);
+ }
+ else
+ {
+ GNUNET_CONTAINER_slist_add (handles_read, GNUNET_CONTAINER_SLIST_DISPOSITION_TRANSIENT,
+ fh, sizeof (struct GNUNET_DISK_FileHandle));
+ retcode++;
+ }
+ }
+ }
+ if (wfds && write_handles)
+ {
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Adding the write ready event to the array as %d\n", nhandles);
+ GNUNET_CONTAINER_slist_append (handles_write, wfds->handles);
+ retcode += write_handles;
+ }
+ if (efds && ex_handles)
+ {
+ struct GNUNET_CONTAINER_SList_Iterator i;
+
+ for (i = GNUNET_CONTAINER_slist_begin (efds->handles);
+ GNUNET_CONTAINER_slist_end (&i) != GNUNET_YES;
+ GNUNET_CONTAINER_slist_next (&i))
+ {
+ struct GNUNET_DISK_FileHandle *fh;
+ DWORD dwBytes;
+
+ fh = (struct GNUNET_DISK_FileHandle *) GNUNET_CONTAINER_slist_get (&i, NULL);
+ if (fh->type == GNUNET_DISK_HANLDE_TYPE_PIPE)
+ {
+ if (PeekNamedPipe (fh->h, NULL, 0, NULL, &dwBytes, NULL))
+ continue;
+ GNUNET_CONTAINER_slist_add (handles_except, GNUNET_CONTAINER_SLIST_DISPOSITION_TRANSIENT,
+ fh, sizeof (struct GNUNET_DISK_FileHandle));
+ retcode++;
+ }
+ }
+ }
+
+ /* Add our select() result.*/
+ if (selectret >= 0)
+ retcode += selectret;
+
+ if (rfds)
+ {
+ GNUNET_NETWORK_fdset_zero (rfds);
+ if (selectret != -1)
+ GNUNET_NETWORK_fdset_copy_native (rfds, &aread, selectret);
+ GNUNET_CONTAINER_slist_append (rfds->handles, handles_read);
+ }
+ if (wfds)
+ {
+ GNUNET_NETWORK_fdset_zero (wfds);
+ if (selectret != -1)
+ GNUNET_NETWORK_fdset_copy_native (wfds, &awrite, selectret);
+ GNUNET_CONTAINER_slist_append (wfds->handles, handles_write);
+ }
+ if (efds)
+ {
+ GNUNET_NETWORK_fdset_zero (efds);
+ if (selectret != -1)
+ GNUNET_NETWORK_fdset_copy_native (efds, &aexcept, selectret);
+ GNUNET_CONTAINER_slist_append (efds->handles, handles_except);
+ }
+ GNUNET_CONTAINER_slist_destroy (handles_read);
+ GNUNET_CONTAINER_slist_destroy (handles_write);
+ GNUNET_CONTAINER_slist_destroy (handles_except);
+
+ if (selectret == -1)
+ return -1;
+ return retcode;
}
+ /* If we got this far, use slower implementation that is able to do a waiting select
+ on both sockets and pipes simultaneously */
+
/* Events for pipes */
if (!hEventReadReady)
hEventReadReady = CreateEvent (NULL, TRUE, TRUE, NULL);
readPipes = 0;
writePipePos = -1;
- handles_read = GNUNET_CONTAINER_slist_create ();
- handles_write = GNUNET_CONTAINER_slist_create ();
- handles_except = GNUNET_CONTAINER_slist_create ();
+ retcode = 0;
+
FD_ZERO (&aread);
FD_ZERO (&awrite);
FD_ZERO (&aexcept);
fh = (struct GNUNET_DISK_FileHandle *) GNUNET_CONTAINER_slist_get (&i,
NULL);
- if (fh->type == GNUNET_PIPE)
+ if (fh->type == GNUNET_DISK_HANLDE_TYPE_PIPE)
{
/* Read zero bytes to check the status of the pipe */
LOG (GNUNET_ERROR_TYPE_DEBUG, "Reading 0 bytes from the pipe 0x%x\n",
fh = (struct GNUNET_DISK_FileHandle *) GNUNET_CONTAINER_slist_get (&i,
NULL);
- if (fh->type == GNUNET_PIPE)
+ if (fh->type == GNUNET_DISK_HANLDE_TYPE_PIPE)
{
if (!PeekNamedPipe (fh->h, NULL, 0, NULL, &dwBytes, NULL))
{
* but we don't use OOB data.
*/
for (i = 0; i < awrite.fd_count; i++)
- {
- if (awrite.fd_array[i] != 0 && awrite.fd_array[i] != -1)
- FD_SET (awrite.fd_array[i], &aexcept);
- }
+ FD_SET (awrite.fd_array[i], &aexcept);
ResetEvent (select_finished_event);
SetEvent (select_standby_event);
}
LOG (GNUNET_ERROR_TYPE_DEBUG, "nfds: %d, handles: %d, will wait: %llu ms\n",
nfds, nhandles, (unsigned long long) ms_total);
if (nhandles)
+ {
returncode =
WaitForMultipleObjects (nhandles, handle_array, FALSE, ms_total);
- LOG (GNUNET_ERROR_TYPE_DEBUG, "WaitForMultipleObjects Returned : %d\n",
- returncode);
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "WaitForMultipleObjects Returned : %d\n",
+ returncode);
+ }
+ else if (nfds > 0)
+ {
+ i = (int) WaitForSingleObject (select_finished_event, INFINITE);
+ returncode = WAIT_TIMEOUT;
+ }
+ else
+ {
+ /* Shouldn't come this far. If it does - investigate. */
+ GNUNET_assert (0);
+ }
if (nfds > 0)
{
* and wake up by itself.
*/
if (ms_total != 0)
- i = send (select_send_socket, (const char *) &returnedpos, 1, 0);\r
- i = (int) WaitForSingleObject (select_finished_event, INFINITE);\r
+ i = send (select_send_socket, (const char *) &returnedpos, 1, 0);
+ i = (int) WaitForSingleObject (select_finished_event, INFINITE);
LOG (GNUNET_ERROR_TYPE_DEBUG, "Finished waiting for the select thread: %d %d\n", i, sp.status);
if (ms_total != 0)
{
do
{
- i = recv (select_wakeup_socket, (char *) &returnedpos, 1, 0);\r
+ i = recv (select_wakeup_socket, (char *) &returnedpos, 1, 0);
} while (i == 1);
}
/* Check aexcept, add its contents to awrite */
for (i = 0; i < aexcept.fd_count; i++)
- {
- if (aexcept.fd_array[i] != 0 && aexcept.fd_array[i] != -1)
- FD_SET (aexcept.fd_array[i], &awrite);
- }
+ FD_SET (aexcept.fd_array[i], &awrite);
}
returnedpos = returncode - WAIT_OBJECT_0;
i, readArray[i]->h, bret, waitstatus, error);
if (bret == 0)
{
- if (error != ERROR_BROKEN_PIPE)
+ /* TODO: either add more errors to this condition, or eliminate it
+ * entirely (failed to peek -> pipe is in serious trouble, should
+ * be selected as readable).
+ */
+ if (error != ERROR_BROKEN_PIPE && error != ERROR_INVALID_HANDLE)
continue;
}
else if (waitstatus <= 0)
fh = (struct GNUNET_DISK_FileHandle *) GNUNET_CONTAINER_slist_get (&t,
NULL);
- if (fh->type == GNUNET_PIPE)
+ if (fh->type == GNUNET_DISK_HANLDE_TYPE_PIPE)
{
CancelIo (fh->h);
}