OS-7922 buildstamp module should live in illumos-joyent

Reviewed by: Robert Mustacchi <rm@joyent.com>
Approved by: Robert Mustacchi <rm@joyent.com>

6 files changed, 217 insertions, 1 deletions

diff --git a/usr/src/uts/common/os/buildversion.c b/usr/src/uts/common/os/buildversion.c
new file mode 100644
index 0000000000..d67cc87fc1
--- /dev/null
+++ b/usr/src/uts/common/os/buildversion.c
@@ -0,0 +1,112 @@
+/*
+ * This file and its contents are supplied under the terms of the
+ * Common Development and Distribution License ("CDDL"), version 1.0.
+ * You may only use this file in accordance with the terms of version
+ * 1.0 of the CDDL.
+ *
+ * A full copy of the text of the CDDL should have accompanied this
+ * source.  A copy of the CDDL is also available via the Internet at
+ * http://www.illumos.org/license/CDDL.
+ */
+
+/*
+ * Copyright 2019 Joyent, Inc.
+ */
+
+/*
+ * This kernel module carries the contents of the file $SRC/buildversion
+ * in such a way that it will be included in kernel crash dumps.  It will be
+ * forceloaded at boot, will refuse to detach, and has no other moving parts.
+ *
+ * The git information can be read back with "mdb", either on the live system
+ * or from a crash dump; e.g.,
+ *
+ *	# mdb -ke buildversion_start/s
+ *
+ * or with
+ *
+ *	# mdb -ke ::status
+ */
+
+#include <sys/ddi.h>
+#include <sys/sunddi.h>
+#include <sys/modctl.h>
+
+int buildversion_no_detach = 1;
+
+static int
+buildversion_attach(dev_info_t *dip, ddi_attach_cmd_t cmd)
+{
+	switch (cmd) {
+	case DDI_ATTACH:
+	case DDI_RESUME:
+		return (DDI_SUCCESS);
+
+	default:
+		return (DDI_FAILURE);
+	}
+}
+
+static int
+buildversion_detach(dev_info_t *dip, ddi_detach_cmd_t cmd)
+{
+
+	switch (cmd) {
+	case DDI_DETACH:
+		if (buildversion_no_detach) {
+			return (DDI_FAILURE);
+		}
+		/* FALLTHRU */
+	case DDI_SUSPEND:
+		return (DDI_SUCCESS);
+
+	default:
+		return (DDI_FAILURE);
+	}
+}
+
+static struct dev_ops buildversion_dev_ops = {
+	.devo_rev =		DEVO_REV,
+	.devo_refcnt =		0,
+	.devo_getinfo =		nodev,
+	.devo_identify =	nulldev,
+	.devo_probe =		nulldev,
+
+	.devo_attach =		buildversion_attach,
+	.devo_detach =		buildversion_detach,
+
+	.devo_reset =		nodev,
+	.devo_cb_ops =		NULL,
+	.devo_bus_ops =		NULL,
+	.devo_power =		nodev,
+	.devo_quiesce =		ddi_quiesce_not_needed,
+};
+
+static struct modldrv buildversion_md = {
+	.drv_modops =		&mod_driverops,
+	.drv_linkinfo =		"illumos buildversion",
+	.drv_dev_ops =		&buildversion_dev_ops,
+};
+
+static struct modlinkage buildversion_ml = {
+	.ml_rev =		MODREV_1,
+	.ml_linkage =		{ &buildversion_md, NULL }
+};
+
+int
+_init(void)
+{
+	return (mod_install(&buildversion_ml));
+}
+
+int
+_info(struct modinfo *mi)
+{
+	return (mod_info(&buildversion_ml, mi));
+}
+
+int
+_fini(void)
+{
+	return (mod_remove(&buildversion_ml));
+}
diff --git a/usr/src/uts/intel/Makefile.intel b/usr/src/uts/intel/Makefile.intel
index 32f5ff1bad..4d43a7d77a 100644
--- a/usr/src/uts/intel/Makefile.intel
+++ b/usr/src/uts/intel/Makefile.intel
@@ -697,6 +697,8 @@ MISC_KMODS	+= uathfw
 
 MISC_KMODS	+= klmmod klmops
 
+MISC_KMODS	+= buildversion
+
 #
 #	Software Cryptographic Providers (/kernel/crypto):
 #
diff --git a/usr/src/uts/intel/buildversion/Makefile b/usr/src/uts/intel/buildversion/Makefile
new file mode 100644
index 0000000000..c4cf46c1a2
--- /dev/null
+++ b/usr/src/uts/intel/buildversion/Makefile
@@ -0,0 +1,50 @@
+#
+# This file and its contents are supplied under the terms of the
+# Common Development and Distribution License ("CDDL"), version 1.0.
+# You may only use this file in accordance with the terms of version
+# 1.0 of the CDDL.
+#
+# A full copy of the text of the CDDL should have accompanied this
+# source.  A copy of the CDDL is also available via the Internet at
+# http://www.illumos.org/license/CDDL.
+#
+# Copyright 2019 Joyent, Inc.
+#
+
+UTSBASE = ../..
+
+MODULE = buildversion
+OBJECTS = $(OBJS_DIR)/$(MODULE).o $(OBJS_DIR)/bvstr.o
+BVSTR = $(OBJS_DIR)/buildversion
+ROOTMODULE = $(ROOT_MISC_DIR)/$(MODULE)
+
+include $(UTSBASE)/intel/Makefile.intel
+
+ALL_TARGET = $(BINARY)
+INSTALL_TARGET = $(ALL_TARGET) $(ROOTMODULE)
+
+CLEANFILES += $(BVSTR)
+
+.KEEP_STATE:
+
+def: $(DEF_DEPS)
+
+all: $(ALL_DEPS)
+
+clean: $(CLEAN_DEPS)
+
+clobber: $(CLOBBER_DEPS)
+
+install: $(INSTALL_DEPS)
+
+#
+# If nightly didn't generate this at all, we do so here
+$(SRC)/buildversion:
+	echo "version unset" >$(SRC)/buildversion
+
+$(OBJS_DIR)/bvstr.o: $(SRC)/buildversion
+	cp $(SRC)/buildversion $(BVSTR)
+	printf '\0' >>$(BVSTR)
+	elfwrap -64 -z target=x86 -o $@ $(BVSTR)
+
+include $(UTSBASE)/intel/Makefile.targ
diff --git a/usr/src/uts/intel/os/name_to_major b/usr/src/uts/intel/os/name_to_major
index e7fe60a8ab..6041728774 100644
--- a/usr/src/uts/intel/os/name_to_major
+++ b/usr/src/uts/intel/os/name_to_major
@@ -298,7 +298,7 @@ smrt 300
 iwn 301
 xhci 302
 qede 303
-buildstamp 304
+buildversion 304
 vmm 305
 viona 306
 ppt 307
diff --git a/usr/src/uts/sparc/Makefile.sparc b/usr/src/uts/sparc/Makefile.sparc
index e592b8a8ff..26494d418e 100644
--- a/usr/src/uts/sparc/Makefile.sparc
+++ b/usr/src/uts/sparc/Makefile.sparc
@@ -432,6 +432,8 @@ MISC_KMODS	+= mii
 
 MISC_KMODS	+= klmmod klmops
 
+MISC_KMODS	+= buildversion
+
 #
 #	Software Cryptographic Providers (/kernel/crypto):
 #
diff --git a/usr/src/uts/sparc/buildversion/Makefile b/usr/src/uts/sparc/buildversion/Makefile
new file mode 100644
index 0000000000..794cf866b8
--- /dev/null
+++ b/usr/src/uts/sparc/buildversion/Makefile
@@ -0,0 +1,50 @@
+#
+# This file and its contents are supplied under the terms of the
+# Common Development and Distribution License ("CDDL"), version 1.0.
+# You may only use this file in accordance with the terms of version
+# 1.0 of the CDDL.
+#
+# A full copy of the text of the CDDL should have accompanied this
+# source.  A copy of the CDDL is also available via the Internet at
+# http://www.illumos.org/license/CDDL.
+#
+# Copyright 2019 Joyent, Inc.
+#
+
+UTSBASE = ../..
+
+MODULE = buildversion
+OBJECTS = $(OBJS_DIR)/$(MODULE).o $(OBJS_DIR)/bvstr.o
+BVSTR = $(OBJS_DIR)/buildversion
+ROOTMODULE = $(ROOT_MISC_DIR)/$(MODULE)
+
+include $(UTSBASE)/sparc/Makefile.sparc
+
+ALL_TARGET = $(BINARY)
+INSTALL_TARGET = $(ALL_TARGET) $(ROOTMODULE)
+
+CLEANFILES += $(BVSTR)
+
+.KEEP_STATE:
+
+def: $(DEF_DEPS)
+
+all: $(ALL_DEPS)
+
+clean: $(CLEAN_DEPS)
+
+clobber: $(CLOBBER_DEPS)
+
+install: $(INSTALL_DEPS)
+
+#
+# If nightly didn't generate this at all, we do so here
+$(SRC)/buildversion:
+	echo "version unset" >$(SRC)/buildversion
+
+$(OBJS_DIR)/bvstr.o: $(SRC)/buildversion
+	cp $(SRC)/buildversion $(BVSTR)
+	printf '\0' >>$(BVSTR)
+	elfwrap -64 -z target=sparc -o $@ $(BVSTR)
+
+include $(UTSBASE)/sparc/Makefile.targ