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b8e1860c885fe3e7cb901b96c3303dd9d70ea26c
qt-creator/dist/gdb/patches/gdb-ipv6.patch
David Schulz ae3a25e05d GDB Makefile: added define for SOL_IPV6 
Added in the ipv6 patch.

Change-Id: I2d6257b9deb1f1fdec85dd89d799e69b04b1a462
Reviewed-by: Fawzi Mohamed <fawzi.mohamed@digia.com>
2013-05-02 08:05:23 +02:00

1038 lines
30 KiB
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diff -Nru a/gdb-7.5.1/gdb/gdbserver/gdbreplay.c b/gdb-7.5.1/gdb/gdbserver/gdbreplay.c
--- a/gdb-7.5.1/gdb/gdbserver/gdbreplay.c 2012-08-22 13:05:02 -0700
+++ b/gdb-7.5.1/gdb/gdbserver/gdbreplay.c 2013-04-15 03:20:40 -0700
@@ -190,14 +190,41 @@
static void
remote_open (char *name)
{
- if (!strchr (name, ':'))
+ char *port_str;
+ char *host_start, *host_end;
+
+ host_start = name;
+ if (host_start[0] == '[')
{
- fprintf (stderr, "%s: Must specify tcp connection as host:addr\n", name);
- fflush (stderr);
- exit (1);
+ ++host_start;
+ host_end = strchr (host_start, ']');
+ if (host_end == NULL)
+ {
+ fprintf (stderr, "Mismatched `[' in hostname.");
+ fflush (stderr);
+ exit (1);
+ }
+ port_str = host_end + 1;
+ if (*port_str != ':')
+ {
+ fprintf (stderr, "Missing port after hostname, specify tcp connection as host:port or [host]:port.");
+ fflush (stderr);
+ exit (1);
+ }
}
else
{
+ port_str = strchr (name, ':');
+ host_end = port_str;
+ if (port_str == NULL)
+ {
+ fprintf (stderr, "Missing port after hostname, specify tcp connection as host:port or [host]:port.");
+ fflush (stderr);
+ exit(1);
+ }
+ }
+
+ {
#ifdef USE_WIN32API
static int winsock_initialized;
#endif
diff -Nru a/gdb-7.5.1/gdb/gdbserver/remote-utils.c b/gdb-7.5.1/gdb/gdbserver/remote-utils.c
--- a/gdb-7.5.1/gdb/gdbserver/remote-utils.c 2012-04-28 23:28:30 -0700
+++ b/gdb-7.5.1/gdb/gdbserver/remote-utils.c 2013-04-16 06:25:07 -0700
@@ -16,6 +16,8 @@
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
+#define _WIN32_WINNT 0x501
+
#include "server.h"
#include "terminal.h"
#include "target.h"
@@ -63,6 +65,13 @@
#if USE_WIN32API
#include <winsock2.h>
+#include <ws2tcpip.h>
+#else
+#include <netinet/in.h> /* sockaddr_in{} and other Internet defns */
+#endif
+
+#ifndef SOL_IPV6
+#define SOL_IPV6 IPPROTO_IPV6
#endif
#if __QNX__
@@ -109,7 +118,7 @@
static int remote_is_stdio = 0;
static gdb_fildes_t remote_desc = INVALID_DESCRIPTOR;
-static gdb_fildes_t listen_desc = INVALID_DESCRIPTOR;
+gdb_fildes_t *listening_sockets = NULL;
/* FIXME headerize? */
extern int using_threads;
@@ -156,15 +165,17 @@
static int
handle_accept_event (int err, gdb_client_data client_data)
{
- struct sockaddr_in sockaddr;
+ struct sockaddr_storage address;
socklen_t tmp;
+ char back_host[64], back_port[16];
+ gdb_fildes_t listen_desc = *(gdb_fildes_t *)client_data;
if (debug_threads)
fprintf (stderr, "handling possible accept event\n");
- tmp = sizeof (sockaddr);
- remote_desc = accept (listen_desc, (struct sockaddr *) &sockaddr, &tmp);
- if (remote_desc == -1)
+ tmp = (socklen_t) sizeof (address);
+ remote_desc = accept (listen_desc, (struct sockaddr *) &address, &tmp);
+ if (remote_desc == INVALID_DESCRIPTOR)
perror_with_name ("Accept failed");
/* Enable TCP keep alive process. */
@@ -178,27 +189,55 @@
setsockopt (remote_desc, IPPROTO_TCP, TCP_NODELAY,
(char *) &tmp, sizeof (tmp));
+ if (listening_sockets)
+ {
+ /* We assume that all sockets have been registered, and none triggers
+ while doing this. This is true in the current single threaded
+ implementation. */
+ gdb_fildes_t *l_sock = listening_sockets;
+ for (++l_sock; *l_sock != INVALID_DESCRIPTOR; ++l_sock)
+ {
#ifndef USE_WIN32API
- signal (SIGPIPE, SIG_IGN); /* If we don't do this, then gdbserver simply
- exits when the remote side dies. */
+ signal (SIGPIPE, SIG_IGN); /* If we don't do this, then gdbserver simply
+ exits when the remote side dies. */
#endif
- if (run_once)
- {
+ if (run_once)
+ {
#ifndef USE_WIN32API
- close (listen_desc); /* No longer need this */
+ close (*l_sock); /* No longer need this */
#else
- closesocket (listen_desc); /* No longer need this */
+ closesocket (*l_sock); /* No longer need this */
#endif
- }
+ }
- /* Even if !RUN_ONCE no longer notice new connections. Still keep the
+ /* Even if !RUN_ONCE no longer notice new connections. Still keep the
descriptor open for add_file_handler to wait for a new connection. */
- delete_file_handler (listen_desc);
+ delete_file_handler (*l_sock);
+ }
+ if (run_once)
+ {
+ free(listening_sockets);
+ listening_sockets = NULL;
+ }
+ }
/* Convert IP address to string. */
- fprintf (stderr, "Remote debugging from host %s\n",
- inet_ntoa (sockaddr.sin_addr));
+ if (getnameinfo ((struct sockaddr *) &address,
+ (socklen_t) sizeof (address),
+ back_host, (socklen_t) sizeof (back_host),
+ back_port, (socklen_t) sizeof (back_port),
+ NI_NUMERICHOST | NI_NUMERICSERV))
+ {
+ fprintf (stderr, "Error detecting originating address, trying anyway\n");
+ }
+ else
+ {
+ back_host[sizeof (back_host) - 1] = 0;
+ back_port[sizeof (back_port) - 1] = 0;
+ fprintf (stderr, "Remote debugging from host %s port %s\n",
+ back_host, back_port);
+ }
enable_async_notification (remote_desc);
@@ -224,12 +263,15 @@
{
char *port_str;
#ifdef USE_WIN32API
- static int winsock_initialized;
+ static int winsock_initialized = 0;
#endif
- int port;
- struct sockaddr_in sockaddr;
- socklen_t tmp;
- char *port_end;
+ char *host_start, *host_end;
+ struct addrinfo hints, *ainfo, *ainfo0;
+ gdb_fildes_t *socktable = NULL;
+ gdb_fildes_t s = INVALID_DESCRIPTOR;
+ int nsock = 0, socktable_size = 0, err, port = 0;
+ char *host_str = NULL;
+ char back_host[128], back_port[32];
remote_is_stdio = 0;
if (strcmp (name, STDIO_CONNECTION_NAME) == 0)
@@ -249,8 +291,24 @@
return;
}
- port = strtoul (port_str + 1, &port_end, 10);
- if (port_str[1] == '\0' || *port_end != '\0')
+ host_start = name;
+ if (host_start[0] == '[')
+ {
+ ++host_start;
+ host_end = strchr (host_start, ']');
+ if (host_end == NULL)
+ fatal ("Mismatched `[' in hostname.");
+ port_str = host_end + 1;
+ if (*port_str != ':')
+ fatal ("Missing port after hostname.");
+ }
+ else
+ {
+ port_str = strchr (name, ':');
+ host_end = port_str;
+ }
+
+ if (port_str[1] == '\0')
fatal ("Bad port argument: %s", name);
#ifdef USE_WIN32API
@@ -263,24 +321,181 @@
}
#endif
- listen_desc = socket (PF_INET, SOCK_STREAM, IPPROTO_TCP);
- if (listen_desc == -1)
- perror_with_name ("Can't open socket");
+ if (host_start < host_end)
+ {
+ host_str = strdup(host_start);
+ host_str[host_end - host_start] = 0;
+ }
+ ++port_str;
- /* Allow rapid reuse of this port. */
- tmp = 1;
- setsockopt (listen_desc, SOL_SOCKET, SO_REUSEADDR, (char *) &tmp,
- sizeof (tmp));
+ memset(&hints, 0, sizeof(hints));
+ hints.ai_family = PF_UNSPEC;
+ hints.ai_socktype = SOCK_STREAM;
+ hints.ai_flags = AI_PASSIVE;
+
+ err = getaddrinfo(host_str, port_str, &hints, &ainfo0);
+ if (err)
+ fatal ("%s for %s", gai_strerror(err), name);
+
+ for (ainfo = ainfo0; ainfo; ainfo = ainfo->ai_next)
+ {
+ int current_port, tmp;
+
+ if (getnameinfo ((struct sockaddr *) ainfo->ai_addr,
+ (socklen_t) ainfo->ai_addrlen,
+ back_host, (socklen_t) sizeof (back_host),
+ back_port, (socklen_t) sizeof (back_port),
+ NI_NUMERICHOST | NI_NUMERICSERV))
+ {
+ back_host[0] = 0;
+ back_port[0] = 0;
+ }
+ else
+ {
+ back_host[sizeof (back_host) - 1] = 0;
+ back_port[sizeof (back_port) - 1] = 0;
+ }
+
+ switch (ainfo->ai_addr->sa_family)
+ {
+ case AF_INET:
+ current_port = ntohs (((struct sockaddr_in *) ainfo->ai_addr)
+ ->sin_port);
+ break;
+ case AF_INET6:
+ current_port = ntohs (((struct sockaddr_in6 *) ainfo->ai_addr)
+ ->sin6_port);
+ break;
+ default:
+ fatal ("Unexpected address family: %d for %s %s",
+ ainfo->ai_addr->sa_family,back_host,back_port);
+ }
+
+ if (port != 0 && current_port == 0)
+ {
+ /* Use the same port for all protocol/interfaces. */
+ switch (ainfo->ai_addr->sa_family)
+ {
+ case AF_INET:
+ ((struct sockaddr_in *) ainfo->ai_addr)->sin_port =
+ htons(port);
+ break;
+ case AF_INET6:
+ ((struct sockaddr_in6 *) ainfo->ai_addr)->sin6_port =
+ htons(port);
+ break;
+ }
+ }
+ s = socket(ainfo->ai_family, ainfo->ai_socktype, ainfo->ai_protocol);
+ if (s < 0)
+ continue;
+
+ /* Allow rapid reuse of this port. */
+ tmp = 1;
+ if (setsockopt (s, SOL_SOCKET, SO_REUSEADDR, (char *) &tmp,
+ (socklen_t) sizeof (tmp)) != 0)
+ {
+ fprintf (stderr, "Trying to bind %s port %s.\n",
+ back_host, back_port);
+ perror("setsockopt(s, SOL_SOCKET, SO_REUSEADDR,[1],4)");
+ }
+#ifdef IPV6_V6ONLY
+ if (ainfo->ai_addr->sa_family == AF_INET6
+ && setsockopt (s, SOL_IPV6, IPV6_V6ONLY, (char *) &tmp,
+ (socklen_t) sizeof (tmp)) != 0)
+ {
+ fprintf (stderr, "Trying to bind %s port %s.\n",
+ back_host, back_port);
+ perror("setsockopt(s, SOL_IPV6, IPV6_V6ONLY,[1],4)");
+ }
+#endif
+
+ if (bind (s, ainfo->ai_addr, ainfo->ai_addrlen) != 0)
+ {
+ fprintf (stderr, "Trying to bind %s port %s.\n",
+ back_host, back_port);
+ perror ("bind failed");
+ close (s);
+ s = -1;
+ continue;
+ }
+
+ if (listen (s, 1) != 0)
+ {
+ fprintf (stderr, "Trying to bind %s port %s.\n",
+ back_host, back_port);
+ perror ("Can't listen to a bound socket");
+ close (s);
+ s = -1;
+ continue;
+ }
+
+ {
+ struct sockaddr_storage address;
+ socklen_t alen = (socklen_t) sizeof (address);
+
+ if (getsockname (s, (struct sockaddr *) &address, &alen))
+ fatal ("Failed to get socket address %s, on soket bound to %s port %s.",
+ strerror (errno), back_host, back_port);
+
+ if (port == 0)
+ /* Try to recover the port set by the kernel. */
+ switch (address.ss_family)
+ {
+ case AF_INET:
+ port = ntohs (((struct sockaddr_in *) &address)->sin_port);
+ break;
+ case AF_INET6:
+ port = ntohs (((struct sockaddr_in6 *) &address)->sin6_port);
+ break;
+ default:
+ fatal ("Unexpected address family: %d", address.ss_family);
+ }
+
+ if (getnameinfo ((struct sockaddr *) &address,
+ (socklen_t) sizeof (address),
+ back_host, (socklen_t) sizeof (back_host),
+ back_port, (socklen_t) sizeof (back_port),
+ NI_NUMERICHOST | NI_NUMERICSERV))
+ {
+ fprintf (stderr, "Error detecting bound address.\n");
+ }
+ else
+ {
+ back_host[sizeof (back_host) - 1] = 0;
+ back_port[sizeof (back_port) - 1] = 0;
+ fprintf (stderr, "Sucessfully bound %s port %s\n",
+ back_host, back_port);
+ }
+ }
- sockaddr.sin_family = PF_INET;
- sockaddr.sin_port = htons (port);
- sockaddr.sin_addr.s_addr = INADDR_ANY;
-
- if (bind (listen_desc, (struct sockaddr *) &sockaddr, sizeof (sockaddr))
- || listen (listen_desc, 1))
- perror_with_name ("Can't bind address");
+ if (socktable_size < nsock + 3)
+ {
+ socktable = xrealloc (socktable,
+ (nsock + 10) * sizeof (gdb_fildes_t));
+ socktable[0] = INVALID_DESCRIPTOR;
+ }
+ socktable[++nsock] = s;
+ }
+
+ freeaddrinfo (ainfo0);
+ free (host_str);
+
+ if (nsock == 0)
+ fatal("Failed to bind any socket.");
+
+ /* Bound socktable from both ends, so an inner pointer can still
+ find the whole array. */
+ socktable[++nsock] = INVALID_DESCRIPTOR;
transport_is_reliable = 1;
+ fprintf (stderr, "Listening on port %d\n", port);
+ fflush (stderr);
+ transport_is_reliable = 1;
+ if (listening_sockets)
+ fatal ("Multiple concurrent remote_open not supported.");
+
+ listening_sockets = socktable;
}
/* Open a connection to a remote debugger.
@@ -290,8 +505,24 @@
remote_open (char *name)
{
char *port_str;
+ char *host_start, *host_end;
- port_str = strchr (name, ':');
+ host_start = name;
+ if (host_start[0] == '[')
+ {
+ ++host_start;
+ host_end = strchr (host_start, ']');
+ if (host_end == NULL)
+ fatal ("Mismatched `[' in hostname.");
+ port_str = host_end + 1;
+ if (*port_str != ':')
+ fatal ("Missing port after hostname.");
+ }
+ else
+ {
+ port_str = strchr (name, ':');
+ host_end = port_str;
+ }
#ifdef USE_WIN32API
if (port_str == NULL)
error ("Only <host>:<port> is supported on this platform.");
@@ -381,22 +612,17 @@
#endif /* USE_WIN32API */
else
{
- int port;
- socklen_t len;
- struct sockaddr_in sockaddr;
-
- len = sizeof (sockaddr);
- if (getsockname (listen_desc,
- (struct sockaddr *) &sockaddr, &len) < 0
- || len < sizeof (sockaddr))
- perror_with_name ("Can't determine port");
- port = ntohs (sockaddr.sin_port);
+ int isock;
- fprintf (stderr, "Listening on port %d\n", port);
- fflush (stderr);
-
- /* Register the event loop handler. */
- add_file_handler (listen_desc, handle_accept_event, NULL);
+ if (! listening_sockets)
+ fatal ("Listening_sockets not initialized (missing call to remote_prepare).");
+ for (isock = 1; listening_sockets[isock] != INVALID_DESCRIPTOR; ++isock)
+ {
+ /* This assumes the loop ends before any of the handlers is called.
+ This is true in the current non threaded implementation. */
+ add_file_handler (listening_sockets[isock], handle_accept_event,
+ listening_sockets + isock);
+ }
}
}
diff -Nru a/gdb-7.5.1/gdb/ser-tcp.c b/gdb-7.5.1/gdb/ser-tcp.c
--- a/gdb-7.5.1/gdb/ser-tcp.c 2012-01-04 00:17:10 -0800
+++ b/gdb-7.5.1/gdb/ser-tcp.c 2013-04-15 03:20:40 -0700
@@ -38,7 +38,9 @@
#include <sys/time.h>
#ifdef USE_WIN32API
+#define _WIN32_WINNT 0x0501
#include <winsock2.h>
+#include <ws2tcpip.h>
#ifndef ETIMEDOUT
#define ETIMEDOUT WSAETIMEDOUT
#endif
@@ -50,6 +52,7 @@
#include <netdb.h>
#include <sys/socket.h>
#include <netinet/tcp.h>
+#include <netinet/in.h>
#endif
#include <signal.h>
@@ -79,76 +82,49 @@
#define POLL_INTERVAL 5
-/* Helper function to wait a while. If SCB is non-null, wait on its
- file descriptor. Otherwise just wait on a timeout, updating *POLLS.
- Returns -1 on timeout or interrupt, otherwise the value of select. */
+enum {
+ ADDR_DROP,
+ ADDR_RECONNECT,
+ ADDR_WAIT,
+ ADDR_SUCCESS
+};
+/* Tries to connect to a socket */
static int
-wait_for_connect (struct serial *scb, int *polls)
+check_sock_err (int fd)
{
- struct timeval t;
- int n;
-
- /* While we wait for the connect to complete,
- poll the UI so it can update or the user can
- interrupt. */
- if (deprecated_ui_loop_hook && deprecated_ui_loop_hook (0))
- {
- errno = EINTR;
- return -1;
- }
-
- /* Check for timeout. */
- if (*polls > tcp_retry_limit * POLL_INTERVAL)
- {
- errno = ETIMEDOUT;
- return -1;
- }
-
- /* Back off to polling once per second after the first POLL_INTERVAL
- polls. */
- if (*polls < POLL_INTERVAL)
- {
- t.tv_sec = 0;
- t.tv_usec = 1000000 / POLL_INTERVAL;
- }
- else
- {
- t.tv_sec = 1;
- t.tv_usec = 0;
- }
+ int res, err;
+ socklen_t len;
- if (scb)
+ len = sizeof (err);
+ /* On Windows, the fourth parameter to getsockopt is a "char *";
+ on UNIX systems it is generally "void *". The cast to "void *"
+ is OK everywhere, since in C "void *" can be implicitly
+ converted to any pointer type. */
+ res = getsockopt (fd, SOL_SOCKET, SO_ERROR, (void *) &err, &len);
+ if (res < 0 || err)
{
- fd_set rset, wset, eset;
-
- FD_ZERO (&rset);
- FD_SET (scb->fd, &rset);
- wset = rset;
- eset = rset;
-
- /* POSIX systems return connection success or failure by signalling
- wset. Windows systems return success in wset and failure in
- eset.
-
- We must call select here, rather than gdb_select, because
- the serial structure has not yet been initialized - the
- MinGW select wrapper will not know that this FD refers
- to a socket. */
- n = select (scb->fd + 1, &rset, &wset, &eset, &t);
+ /* Maybe the target still isn't ready to accept the connection. */
+ if (tcp_auto_retry
+ #ifdef USE_WIN32API
+ && err == WSAECONNREFUSED
+ #else
+ && err == ECONNREFUSED
+ #endif
+ )
+ {
+ close (fd);
+ return ADDR_RECONNECT;
+ }
+ else
+ {
+ if (err)
+ errno = err;
+ close (fd);
+ return ADDR_DROP;
+ }
}
- else
- /* Use gdb_select here, since we have no file descriptors, and on
- Windows, plain select doesn't work in that case. */
- n = gdb_select (0, NULL, NULL, NULL, &t);
-
- /* If we didn't time out, only count it as one poll. */
- if (n > 0 || *polls < POLL_INTERVAL)
- (*polls)++;
- else
- (*polls) += POLL_INTERVAL;
-
- return n;
+ return ADDR_SUCCESS;
}
/* Open a tcp socket. */
@@ -156,18 +132,24 @@
int
net_open (struct serial *scb, const char *name)
{
- char *port_str, hostname[100];
- int n, port, tmp;
+ char *port_str, hostname[100], *name_end;
+ int n = 0, tmp;
int use_udp;
struct hostent *hostent;
- struct sockaddr_in sockaddr;
+ struct addrinfo hints, *ainfo, *ainfo0, *ainfo_reconnect, *ainfo_old,
+ *ainfo_tmp;
+ struct sockaddr_storage address;
+ int max_w_socks = 0, n_w_socks = 0;
+ int *waiting_socks = NULL;
#ifdef USE_WIN32API
u_long ioarg;
#else
int ioarg;
#endif
int polls = 0;
+ int err, fd = -1;
+ scb->fd = -1;
use_udp = 0;
if (strncmp (name, "udp:", 4) == 0)
{
@@ -177,134 +159,286 @@
else if (strncmp (name, "tcp:", 4) == 0)
name = name + 4;
- port_str = strchr (name, ':');
-
- if (!port_str)
- error (_("net_open: No colon in host name!")); /* Shouldn't ever
+ if (name[0]=='[')
+ {
+ ++name;
+ name_end = strchr(name, ']');
+ if (name_end == NULL)
+ error (_("net_open: Mismatched '['"));
+ port_str = name_end+1;
+ } else {
+ port_str = strchr (name, ':');
+ name_end = port_str;
+ }
+ if (!port_str || port_str[0] !=':')
+ error (_("net_open: No colon after host name!")); /* Shouldn't ever
happen. */
- tmp = min (port_str - name, (int) sizeof hostname - 1);
- strncpy (hostname, name, tmp); /* Don't want colon. */
- hostname[tmp] = '\000'; /* Tie off host name. */
- port = atoi (port_str + 1);
-
- /* Default hostname is localhost. */
- if (!hostname[0])
- strcpy (hostname, "localhost");
-
- hostent = gethostbyname (hostname);
- if (!hostent)
+ tmp = min (name_end - name, (int) sizeof hostname - 1);
+ /* Default hostname is localhost. Keeping this but NULL should also work. */
+ if (!name[0])
{
- fprintf_unfiltered (gdb_stderr, "%s: unknown host\n", hostname);
- errno = ENOENT;
- return -1;
+ strcpy (hostname, "localhost");
}
-
- sockaddr.sin_family = PF_INET;
- sockaddr.sin_port = htons (port);
- memcpy (&sockaddr.sin_addr.s_addr, hostent->h_addr,
- sizeof (struct in_addr));
-
- retry:
-
- if (use_udp)
- scb->fd = socket (PF_INET, SOCK_DGRAM, 0);
else
- scb->fd = socket (PF_INET, SOCK_STREAM, 0);
-
- if (scb->fd == -1)
- return -1;
+ {
+ strncpy (hostname, name, tmp); /* Don't want colon. */
+ hostname[tmp] = '\000'; /* Tie off host name. */
+ }
+ ++port_str;
- /* Set socket nonblocking. */
- ioarg = 1;
- ioctl (scb->fd, FIONBIO, &ioarg);
+
+ memset(&hints, 0, sizeof(hints));
+ hints.ai_family = PF_UNSPEC;
+ if (use_udp)
+ hints.ai_socktype = SOCK_DGRAM;
+ else
+ hints.ai_socktype = SOCK_STREAM;
- /* Use Non-blocking connect. connect() will return 0 if connected
- already. */
- n = connect (scb->fd, (struct sockaddr *) &sockaddr, sizeof (sockaddr));
+ err = getaddrinfo(hostname, port_str, &hints, &ainfo0);
+ if (err)
+ {
+ fprintf_unfiltered (gdb_stderr, "%s: connecting to %s on port %s\n",
+ gai_strerror(err), hostname, port_str);
+ errno = ENOENT;
+ return -1;
+ }
- if (n < 0)
+ do
{
-#ifdef USE_WIN32API
- int err = WSAGetLastError();
-#else
- int err = errno;
-#endif
+ ainfo = ainfo0;
+ ainfo_old = NULL;
+ while (ainfo)
+ {
+ int op_to_do, connect_ret;
+
+ ainfo_old = ainfo;
+ fd = socket (ainfo->ai_family, ainfo->ai_socktype,
+ ainfo->ai_protocol);
+
+ if (fd == -1)
+ {
+ ainfo = ainfo->ai_next;
+ continue;
+ }
+
+ /* Set socket nonblocking. */
+ ioarg = 1;
+ ioctl (fd, FIONBIO, &ioarg);
+
+ /* Use Non-blocking connect. connect() will return 0 if connected
+ already. */
+ connect_ret = connect (fd, ainfo->ai_addr, ainfo->ai_addrlen);
- /* Maybe we're waiting for the remote target to become ready to
- accept connections. */
- if (tcp_auto_retry
+ if (connect_ret < 0)
+ {
#ifdef USE_WIN32API
- && err == WSAECONNREFUSED
+ int err = WSAGetLastError();
#else
- && err == ECONNREFUSED
+ int err = errno;
#endif
- && wait_for_connect (NULL, &polls) >= 0)
- {
- close (scb->fd);
- goto retry;
- }
- if (
-#ifdef USE_WIN32API
- /* Under Windows, calling "connect" with a non-blocking socket
- results in WSAEWOULDBLOCK, not WSAEINPROGRESS. */
- err != WSAEWOULDBLOCK
-#else
- err != EINPROGRESS
-#endif
- )
- {
- errno = err;
- net_close (scb);
- return -1;
- }
-
- /* Looks like we need to wait for the connect. */
- do
- {
- n = wait_for_connect (scb, &polls);
- }
- while (n == 0);
- if (n < 0)
- {
- net_close (scb);
- return -1;
- }
+ /* Maybe we're waiting for the remote target to become ready to
+ accept connections. */
+ if (tcp_auto_retry
+ #ifdef USE_WIN32API
+ && err == WSAECONNREFUSED
+ #else
+ && err == ECONNREFUSED
+ #endif
+ )
+ {
+ close (fd);
+ op_to_do = ADDR_RECONNECT;
+ }
+ else if (
+ #ifdef USE_WIN32API
+ /* Under Windows, calling "connect" with a non-blocking socket
+ results in WSAEWOULDBLOCK, not WSAEINPROGRESS. */
+ err != WSAEWOULDBLOCK
+ #else
+ err != EINPROGRESS
+ #endif
+ )
+ {
+ close (fd);
+ op_to_do = ADDR_DROP;
+ }
+ else
+ {
+ op_to_do = ADDR_WAIT;
+ }
+ }
+ else
+ {
+ op_to_do = check_sock_err(fd);
+ }
+ switch (op_to_do)
+ {
+ case ADDR_DROP:
+ break;
+ case ADDR_RECONNECT:
+ ainfo_tmp = ainfo->ai_next;
+ ainfo->ai_next = ainfo_reconnect;
+ ainfo_reconnect->ai_next = ainfo;
+ ainfo = ainfo_tmp;
+ ainfo_old = NULL;
+ break;
+ case ADDR_WAIT:
+ /* Looks like we need to wait for the connect. */
+ if (n_w_socks >= max_w_socks)
+ {
+ max_w_socks += 10;
+ waiting_socks= xrealloc (waiting_socks, max_w_socks
+ * sizeof(*waiting_socks));
+ }
+ waiting_socks[n_w_socks++] = fd;
+ break;
+ case ADDR_SUCCESS:
+ break;
+ default:
+ fatal (_("Unexpected value for try_connect in net_open."));
+ }
+ if (ainfo_old)
+ {
+ ainfo = ainfo_old->ai_next;
+ ainfo_old->ai_next = NULL;
+ freeaddrinfo (ainfo_old);
+ }
+ if (op_to_do == ADDR_SUCCESS)
+ break;
+ fd = -1;
+ }
+ ainfo0 = ainfo_reconnect;
+ ainfo_reconnect = NULL;
+
+ if (fd != -1 || !(ainfo0 != NULL || n_w_socks != 0))
+ break;
+
+ do
+ {
+ struct timeval t;
+ int max_fd;
+ fd_set rset;
+
+ /* While we wait for the connect to complete,
+ poll the UI so it can update or the user can
+ interrupt. */
+ if (deprecated_ui_loop_hook && deprecated_ui_loop_hook (0))
+ {
+ errno = EINTR;
+ return -1;
+ }
+
+ /* Check for timeout. */
+ if (polls > tcp_retry_limit * POLL_INTERVAL)
+ {
+ errno = ETIMEDOUT;
+ return -1;
+ }
+
+ /* Back off to polling once per second after the first POLL_INTERVAL
+ polls. */
+ if (polls < POLL_INTERVAL)
+ {
+ t.tv_sec = 0;
+ t.tv_usec = 1000000 / POLL_INTERVAL;
+ }
+ else
+ {
+ t.tv_sec = 1;
+ t.tv_usec = 0;
+ }
+
+ max_fd=-1;
+ if (n_w_socks)
+ {
+ int ifd;
+
+ FD_ZERO (&rset);
+ for (ifd = 0; ifd < n_w_socks; ++ifd)
+ {
+ if (waiting_socks[ifd] != -1)
+ {
+ FD_SET (waiting_socks[ifd], &rset);
+ if (max_fd < waiting_socks[ifd])
+ max_fd = waiting_socks[ifd];
+ }
+ }
+ }
+ if (max_fd != -1)
+ {
+ int ifd;
+ fd_set wset, eset;
+ wset = rset;
+ eset = rset;
+
+ /* POSIX systems return connection success or failure by signalling
+ wset. Windows systems return success in wset and failure in
+ eset.
+
+ We must call select here, rather than gdb_select, because
+ the serial structure has not yet been initialized - the
+ MinGW select wrapper will not know that this FD refers
+ to a socket. */
+ n = select (max_fd + 1, &rset, &wset, &eset, &t);
+ if (n > 0)
+ for (ifd = 0; ifd < n_w_socks && fd == -1; ++ifd)
+ if (FD_ISSET(waiting_socks[ifd], &rset)
+ || FD_ISSET(waiting_socks[ifd], &wset)
+ || FD_ISSET(waiting_socks[ifd], &eset))
+ {
+ int op_to_do;
+
+ op_to_do = check_sock_err(waiting_socks[ifd]);
+ switch (op_to_do)
+ {
+ case ADDR_RECONNECT:
+ //waiting_socks[ifd] = -1;
+ break;
+ case ADDR_DROP:
+ //waiting_socks[ifd] = -1;
+ break;
+ case ADDR_WAIT:
+ break;
+ case ADDR_SUCCESS:
+ fd = waiting_socks[ifd];
+ break;
+ default:
+ fatal (_("Unexpected value for try_connect in net_open."));
+ }
+ }
+ }
+ else
+ /* Use gdb_select here, since we have no file descriptors, and on
+ Windows, plain select doesn't work in that case. */
+ n = gdb_select (0, NULL, NULL, NULL, &t);
+
+ /* If we didn't time out, only count it as one poll. */
+ if (n > 0 || polls < POLL_INTERVAL)
+ polls++;
+ else
+ polls += POLL_INTERVAL;
+ }
+ while (fd == -1 && n == 0 && ainfo0 == NULL);
}
+ while (fd == -1 && n >= 0);
- /* Got something. Is it an error? */
- {
- int res, err;
- socklen_t len;
-
- len = sizeof (err);
- /* On Windows, the fourth parameter to getsockopt is a "char *";
- on UNIX systems it is generally "void *". The cast to "void *"
- is OK everywhere, since in C "void *" can be implicitly
- converted to any pointer type. */
- res = getsockopt (scb->fd, SOL_SOCKET, SO_ERROR, (void *) &err, &len);
- if (res < 0 || err)
- {
- /* Maybe the target still isn't ready to accept the connection. */
- if (tcp_auto_retry
-#ifdef USE_WIN32API
- && err == WSAECONNREFUSED
-#else
- && err == ECONNREFUSED
-#endif
- && wait_for_connect (NULL, &polls) >= 0)
- {
- close (scb->fd);
- goto retry;
- }
- if (err)
- errno = err;
- net_close (scb);
- return -1;
- }
- }
+ freeaddrinfo (ainfo0);
+ if (waiting_socks)
+ {
+ int ifd;
+
+ for (ifd = 0; ifd < n_w_socks && fd == -1; ++ifd)
+ if (waiting_socks[ifd] != fd && waiting_socks[ifd] != -1)
+ close (waiting_socks[ifd]);
+ }
+ free (waiting_socks);
+
+ if (fd == -1)
+ return -1;
+ scb->fd = fd;
/* Turn off nonblocking. */
ioarg = 0;
ioctl (scb->fd, FIONBIO, &ioarg);
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