47 lines
1.6 KiB
Diff
47 lines
1.6 KiB
Diff
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--- xorg-server-1.1.1/hw/xfree86/os-support/linux/lnx_init.c.jx 2006-07-05 14:31:41.000000000 -0400
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+++ xorg-server-1.1.1/hw/xfree86/os-support/linux/lnx_init.c 2006-09-26 17:53:04.000000000 -0400
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@@ -248,14 +248,37 @@
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#endif
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/*
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* now get the VT
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+ *
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+ * There's a race here, in that if someone else does a VT_ACTIVATE
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+ * between our ACTIVATE/WAITACTIVE, we might never get the VT.
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+ * So, just spin until we do. There's really no fixing this,
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+ * it's a racy protocol.
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*/
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- if (ioctl(xf86Info.consoleFd, VT_ACTIVATE, xf86Info.vtno) < 0)
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- xf86Msg(X_WARNING, "xf86OpenConsole: VT_ACTIVATE failed: %s\n",
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- strerror(errno));
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+ while (1) {
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+ if (ioctl(xf86Info.consoleFd, VT_ACTIVATE, xf86Info.vtno) < 0)
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+ FatalError(X_WARNING,
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+ "xf86OpenConsole: VT_ACTIVATE failed: %s\n",
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+ strerror(errno));
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- if (ioctl(xf86Info.consoleFd, VT_WAITACTIVE, xf86Info.vtno) < 0)
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- xf86Msg(X_WARNING, "xf86OpenConsole: VT_WAITACTIVE failed: %s\n",
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- strerror(errno));
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+
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+ alarm(5);
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+ if (ioctl(xf86Info.consoleFd, VT_WAITACTIVE, xf86Info.vtno) < 0)
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+ {
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+ if (errno == EINTR) {
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+ /* we lost the race and the alarm fired, try again */
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+ xf86Msg(X_WARNING,
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+ "Lost VT_WAITACTIVE race, retrying\n");
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+ continue;
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+ }
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+
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+ FatalError("xf86OpenConsole: VT_WAITACTIVE failed: %s\n",
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+ strerror(errno));
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+ }
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+ /* success, turn off the alarm */
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+ alarm(0);
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+
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+ break;
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+ }
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if (ioctl(xf86Info.consoleFd, VT_GETMODE, &VT) < 0)
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FatalError("xf86OpenConsole: VT_GETMODE failed %s\n",
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