173 lines
4.4 KiB
Diff
173 lines
4.4 KiB
Diff
From ac43dac0a18778081ea784c98391f0333981ca13 Mon Sep 17 00:00:00 2001
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From: Adam Jackson <ajax@redhat.com>
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Date: Mon, 6 Apr 2009 15:44:05 -0400
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Subject: [PATCH] displayfd hack
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---
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dix/globals.c | 1 +
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include/opaque.h | 1 +
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os/connection.c | 72 ++++++++++++++++++++++++++++++++++++-----------------
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os/utils.c | 11 ++++++++
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4 files changed, 62 insertions(+), 23 deletions(-)
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diff --git a/dix/globals.c b/dix/globals.c
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index dbd76bb..749bf9b 100644
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--- a/dix/globals.c
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+++ b/dix/globals.c
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@@ -152,6 +152,7 @@ _X_EXPORT int defaultColorVisualClass = -1;
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_X_EXPORT int monitorResolution = 0;
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_X_EXPORT char *display;
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+int displayfd;
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char *ConnectionInfo;
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CARD32 TimeOutValue = DEFAULT_TIMEOUT * MILLI_PER_SECOND;
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diff --git a/include/opaque.h b/include/opaque.h
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index be1577b..2ae6680 100644
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--- a/include/opaque.h
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+++ b/include/opaque.h
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@@ -50,6 +50,7 @@ extern int ScreenSaverAllowExposures;
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extern int defaultScreenSaverBlanking;
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extern int defaultScreenSaverAllowExposures;
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extern char *display;
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+extern int displayfd;
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extern int defaultBackingStore;
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extern Bool disableBackingStore;
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diff --git a/os/connection.c b/os/connection.c
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index 8f1f73e..4351117 100644
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--- a/os/connection.c
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+++ b/os/connection.c
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@@ -146,6 +146,7 @@ Bool NewOutputPending; /* not yet attempted to write some new output */
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Bool AnyClientsWriteBlocked; /* true if some client blocked on write */
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static Bool RunFromSmartParent; /* send SIGUSR1 to parent process */
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+static char dynamic_display[7];
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Bool PartialNetwork; /* continue even if unable to bind all addrs */
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static Pid_t ParentProcess;
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@@ -367,9 +368,23 @@ NotifyParentProcess(void)
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kill (ParentProcess, SIGUSR1);
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}
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}
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+ if (dynamic_display[0])
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+ write(displayfd, dynamic_display, strlen(dynamic_display));
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#endif
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}
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+static Bool
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+TryCreateSocket(int num, int *partial)
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+{
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+ char port[20];
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+
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+ sprintf(port, "%d", num);
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+
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+ return _XSERVTransMakeAllCOTSServerListeners(port, partial,
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+ &ListenTransCount,
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+ &ListenTransConns);
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+}
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+
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/*****************
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* CreateWellKnownSockets
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* At initialization, create the sockets to listen on for new clients.
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@@ -380,7 +395,6 @@ CreateWellKnownSockets(void)
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{
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int i;
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int partial;
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- char port[20];
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FD_ZERO(&AllSockets);
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FD_ZERO(&AllClients);
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@@ -395,32 +409,44 @@ CreateWellKnownSockets(void)
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FD_ZERO (&WellKnownConnections);
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- sprintf (port, "%d", atoi (display));
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-
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- if ((_XSERVTransMakeAllCOTSServerListeners (port, &partial,
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- &ListenTransCount, &ListenTransConns) >= 0) &&
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- (ListenTransCount >= 1))
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+ if (display)
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{
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- if (!PartialNetwork && partial)
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- {
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- FatalError ("Failed to establish all listening sockets");
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- }
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- else
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+ if (TryCreateSocket(atoi(display), &partial) &&
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+ (ListenTransCount >= 1))
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+ if (!PartialNetwork && partial)
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+ FatalError ("Failed to establish all listening sockets");
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+ }
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+ else /* -displayfd */
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+ {
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+ Bool found = 0;
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+ for (i = 0; i < 65535 - 1024; i++)
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{
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- ListenTransFds = (int *) xalloc (ListenTransCount * sizeof (int));
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-
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- for (i = 0; i < ListenTransCount; i++)
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+ if (!TryCreateSocket(i, &partial) && !partial)
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{
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- int fd = _XSERVTransGetConnectionNumber (ListenTransConns[i]);
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-
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- ListenTransFds[i] = fd;
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- FD_SET (fd, &WellKnownConnections);
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-
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- if (!_XSERVTransIsLocal (ListenTransConns[i]))
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- {
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- DefineSelf (fd);
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- }
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+ found = 1;
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+ break;
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}
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+ else
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+ CloseWellKnownConnections();
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+ }
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+ if (!found)
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+ FatalError("Failed to find a socket to listen on");
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+ sprintf(dynamic_display, "%d\n", i);
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+ display = dynamic_display;
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+ }
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+
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+ ListenTransFds = xalloc (ListenTransCount * sizeof (int));
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+
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+ for (i = 0; i < ListenTransCount; i++)
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+ {
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+ int fd = _XSERVTransGetConnectionNumber (ListenTransConns[i]);
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+
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+ ListenTransFds[i] = fd;
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+ FD_SET (fd, &WellKnownConnections);
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+
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+ if (!_XSERVTransIsLocal (ListenTransConns[i]))
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+ {
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+ DefineSelf (fd);
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}
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}
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diff --git a/os/utils.c b/os/utils.c
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index c41b45b..2372588 100644
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--- a/os/utils.c
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+++ b/os/utils.c
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@@ -674,6 +674,17 @@ ProcessCommandLine(int argc, char *argv[])
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else
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UseMsg();
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}
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+ else if (strcmp(argv[i], "-displayfd") == 0)
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+ {
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+ if (++i < argc)
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+ {
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+ displayfd = atoi(argv[i]);
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+ display = NULL;
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+ nolock = TRUE;
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+ }
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+ else
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+ UseMsg();
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+ }
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#ifdef DPMSExtension
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else if ( strcmp( argv[i], "dpms") == 0)
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DPMSEnabledSwitch = TRUE;
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--
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1.6.2
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