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-rw-r--r--nx-X11/programs/Xserver/dix/globals.c1
-rw-r--r--nx-X11/programs/Xserver/hw/nxagent/man/nxagent.17
-rw-r--r--nx-X11/programs/Xserver/include/opaque.h1
-rw-r--r--nx-X11/programs/Xserver/os/connection.c76
-rw-r--r--nx-X11/programs/Xserver/os/utils.c10
5 files changed, 69 insertions, 26 deletions
diff --git a/nx-X11/programs/Xserver/dix/globals.c b/nx-X11/programs/Xserver/dix/globals.c
index a0af50fa8..5a3e22c26 100644
--- a/nx-X11/programs/Xserver/dix/globals.c
+++ b/nx-X11/programs/Xserver/dix/globals.c
@@ -149,6 +149,7 @@ int defaultColorVisualClass = -1;
int monitorResolution = 0;
char *display;
+int displayfd;
CARD32 TimeOutValue = DEFAULT_TIMEOUT * MILLI_PER_SECOND;
int argcGlobal;
diff --git a/nx-X11/programs/Xserver/hw/nxagent/man/nxagent.1 b/nx-X11/programs/Xserver/hw/nxagent/man/nxagent.1
index af5fc88f8..66f25b438 100644
--- a/nx-X11/programs/Xserver/hw/nxagent/man/nxagent.1
+++ b/nx-X11/programs/Xserver/hw/nxagent/man/nxagent.1
@@ -178,6 +178,13 @@ different from the user's real uid.
.B \-core
causes the server to generate a core dump on fatal errors.
.TP 8
+.B \-displayfd \fIfd\fP
+specifies a file descriptor in the launching process. Rather than specify
+a display number, the X server will attempt to listen on successively higher
+display numbers, and upon finding a free one, will write the port number back
+on this file descriptor as a newline-terminated string. The \-pn option is
+ignored when using \-displayfd.
+.TP 8
.B \-deferglyphs \fIwhichfonts\fP
specifies the types of fonts for which the server should attempt to use
deferred glyph loading. \fIwhichfonts\fP can be all (all fonts),
diff --git a/nx-X11/programs/Xserver/include/opaque.h b/nx-X11/programs/Xserver/include/opaque.h
index bd286ba12..8f98bf1be 100644
--- a/nx-X11/programs/Xserver/include/opaque.h
+++ b/nx-X11/programs/Xserver/include/opaque.h
@@ -52,6 +52,7 @@ extern int defaultScreenSaverAllowExposures;
extern int argcGlobal;
extern char **argvGlobal;
extern char *display;
+extern int displayfd;
extern int defaultBackingStore;
extern Bool disableBackingStore;
diff --git a/nx-X11/programs/Xserver/os/connection.c b/nx-X11/programs/Xserver/os/connection.c
index 2fa8ad12d..6dc0ff64d 100644
--- a/nx-X11/programs/Xserver/os/connection.c
+++ b/nx-X11/programs/Xserver/os/connection.c
@@ -138,6 +138,7 @@ int NumNotifyWriteFd; /* Number of NotifyFd members with write set */
Bool NewOutputPending; /* not yet attempted to write some new output */
Bool AnyWritesPending; /* true if some client blocked on write or NotifyFd with write */
Bool RunFromSmartParent; /* send SIGUSR1 to parent process */
+static char dynamic_display[7]; /* display name */
Bool PartialNetwork; /* continue even if unable to bind all addrs */
static Pid_t ParentProcess;
@@ -359,6 +360,10 @@ void
NotifyParentProcess(void)
{
#if !defined(WIN32)
+ if (dynamic_display[0]) {
+ write(displayfd, dynamic_display, strlen(dynamic_display));
+ close(displayfd);
+ }
if (RunFromSmartParent) {
if (ParentProcess > 1) {
kill (ParentProcess, SIGUSR1);
@@ -367,6 +372,18 @@ NotifyParentProcess(void)
#endif
}
+static Bool
+TryCreateSocket(int num, int *partial)
+{
+ char port[20];
+
+ snprintf(port, sizeof(port), "%d", num);
+
+ return (_XSERVTransMakeAllCOTSServerListeners(port, partial,
+ &ListenTransCount,
+ &ListenTransConns) >= 0);
+}
+
/*****************
* CreateWellKnownSockets
* At initialization, create the sockets to listen on for new clients.
@@ -377,7 +394,6 @@ CreateWellKnownSockets(void)
{
int i;
int partial;
- char port[20];
FD_ZERO(&AllSockets);
FD_ZERO(&AllClients);
@@ -392,33 +408,41 @@ CreateWellKnownSockets(void)
FD_ZERO (&WellKnownConnections);
- sprintf (port, "%d", atoi (display));
-
- if ((_XSERVTransMakeAllCOTSServerListeners (port, &partial,
- &ListenTransCount, &ListenTransConns) >= 0) &&
- (ListenTransCount >= 1))
- {
- if (!PartialNetwork && partial)
- {
- FatalError ("Failed to establish all listening sockets");
- }
- else
- {
- ListenTransFds = (int *) malloc (ListenTransCount * sizeof (int));
-
- for (i = 0; i < ListenTransCount; i++)
- {
- int fd = _XSERVTransGetConnectionNumber (ListenTransConns[i]);
-
- ListenTransFds[i] = fd;
- FD_SET (fd, &WellKnownConnections);
-
- if (!_XSERVTransIsLocal (ListenTransConns[i]))
- {
- DefineSelf (fd);
- }
+ /* display is initialized to "0" by main(). It is then set to the display
+ * number if specified on the command line, or to NULL when the -displayfd
+ * option is used. */
+ if (display) {
+ if (TryCreateSocket(atoi(display), &partial) &&
+ ListenTransCount >= 1)
+ if (!PartialNetwork && partial)
+ FatalError ("Failed to establish all listening sockets");
+ }
+ else { /* -displayfd */
+ Bool found = 0;
+ for (i = 0; i < 65535 - X_TCP_PORT; i++) {
+ if (TryCreateSocket(i, &partial) && !partial) {
+ found = 1;
+ break;
}
+ else
+ CloseWellKnownConnections();
}
+ if (!found)
+ FatalError("Failed to find a socket to listen on");
+ snprintf(dynamic_display, sizeof(dynamic_display), "%d", i);
+ display = dynamic_display;
+ }
+
+ ListenTransFds = malloc(ListenTransCount * sizeof (int));
+
+ for (i = 0; i < ListenTransCount; i++) {
+ int fd = _XSERVTransGetConnectionNumber(ListenTransConns[i]);
+
+ ListenTransFds[i] = fd;
+ FD_SET(fd, &WellKnownConnections);
+
+ if (!_XSERVTransIsLocal(ListenTransConns[i]))
+ DefineSelf (fd);
}
if (!XFD_ANYSET (&WellKnownConnections))
diff --git a/nx-X11/programs/Xserver/os/utils.c b/nx-X11/programs/Xserver/os/utils.c
index 25cbb1e87..929549168 100644
--- a/nx-X11/programs/Xserver/os/utils.c
+++ b/nx-X11/programs/Xserver/os/utils.c
@@ -780,6 +780,16 @@ ProcessCommandLine(int argc, char *argv[])
else
UseMsg();
}
+ else if (strcmp(argv[i], "-displayfd") == 0) {
+ if (++i < argc) {
+ displayfd = atoi(argv[i]);
+ display = NULL;
+ nolock = TRUE;
+ }
+ else
+ UseMsg();
+ }
+
#ifdef DPMSExtension
else if ( strcmp( argv[i], "dpms") == 0)
DPMSEnabledSwitch = TRUE;