svn commit: r327888 - in head: cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/safety cddl/contrib/opensolaris/lib/libdtrace/common cddl/usr.sbin/dtrace/tests/common/safety sys/cddl/contrib/ope...
Mark Johnston
markj at FreeBSD.org
Fri Jan 12 19:59:48 UTC 2018
Author: markj
Date: Fri Jan 12 19:59:46 2018
New Revision: 327888
URL: https://svnweb.freebsd.org/changeset/base/327888
Log:
Add "jid" and "jailname" variables to DTrace.
These return the jail ID and jail name for the traced process,
respectively, and are analogous to "zonename" on Solaris/illumos.
"zonename" is now aliased to "jailname".
Also add some stress tests for the new variables.
Submitted by: Domagoj Stolfa <domagoj.stolfa at gmail.com>
Reviewed by: dteske (previous version)
MFC after: 2 weeks
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D13877
Added:
head/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/safety/tst.jailname.d
head/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/safety/tst.jid.d
Modified:
head/cddl/contrib/opensolaris/lib/libdtrace/common/dt_open.c
head/cddl/usr.sbin/dtrace/tests/common/safety/Makefile
head/sys/cddl/contrib/opensolaris/uts/common/dtrace/dtrace.c
head/sys/cddl/contrib/opensolaris/uts/common/sys/dtrace.h
Added: head/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/safety/tst.jailname.d
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/safety/tst.jailname.d Fri Jan 12 19:59:46 2018 (r327888)
@@ -0,0 +1,44 @@
+/*
+ * 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 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 2018 Domagoj Stolfa <domagoj.stolfa at cl.cam.ac.uk>.
+ *
+ * This software was developed by BAE Systems, the University of Cambridge
+ * Computer Laboratory, and Memorial University under DARPA/AFRL contract
+ * FA8650-15-C-7558 ("CADETS"), as part of the DARPA Transparent Computing
+ * (TC) research program.
+ *
+ */
+
+#pragma ident "%Z%%M% %I% %E% SMI"
+
+/*
+ * ASSERTION:
+ * collect jailname at every fbt probe and at every firing of a
+ * high-frequency profile probe
+ */
+
+fbt:::
+{
+ @a[jailname] = count();
+}
+
+profile-4999hz
+{
+ @a[jailname] = count();
+}
+
+tick-1sec
+/n++ == 10/
+{
+ exit(0);
+}
Added: head/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/safety/tst.jid.d
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/safety/tst.jid.d Fri Jan 12 19:59:46 2018 (r327888)
@@ -0,0 +1,44 @@
+/*
+ * 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 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 2018 Domagoj Stolfa <domagoj.stolfa at cl.cam.ac.uk>.
+ *
+ * This software was developed by BAE Systems, the University of Cambridge
+ * Computer Laboratory, and Memorial University under DARPA/AFRL contract
+ * FA8650-15-C-7558 ("CADETS"), as part of the DARPA Transparent Computing
+ * (TC) research program.
+ *
+ */
+
+#pragma ident "%Z%%M% %I% %E% SMI"
+
+/*
+ * ASSERTION:
+ * collect jid at every fbt probe and at every firing of a
+ * high-frequency profile probe
+ */
+
+fbt:::
+{
+ @a[jid] = count();
+}
+
+profile-4999hz
+{
+ @a[jid] = count();
+}
+
+tick-1sec
+/n++ == 10/
+{
+ exit(0);
+}
Modified: head/cddl/contrib/opensolaris/lib/libdtrace/common/dt_open.c
==============================================================================
--- head/cddl/contrib/opensolaris/lib/libdtrace/common/dt_open.c Fri Jan 12 18:44:28 2018 (r327887)
+++ head/cddl/contrib/opensolaris/lib/libdtrace/common/dt_open.c Fri Jan 12 19:59:46 2018 (r327888)
@@ -313,6 +313,12 @@ static const dt_ident_t _dtrace_globals[] = {
DT_VERS_1_5, &dt_idops_func, "string(int, void *)" },
{ "ipl", DT_IDENT_SCALAR, 0, DIF_VAR_IPL, DT_ATTR_STABCMN, DT_VERS_1_0,
&dt_idops_type, "uint_t" },
+#ifdef __FreeBSD__
+{ "jailname", DT_IDENT_SCALAR, 0, DIF_VAR_JAILNAME,
+ DT_ATTR_STABCMN, DT_VERS_1_13, &dt_idops_type, "string" },
+{ "jid", DT_IDENT_SCALAR, 0, DIF_VAR_JID, DT_ATTR_STABCMN, DT_VERS_1_13,
+ &dt_idops_type, "int" },
+#endif
{ "json", DT_IDENT_FUNC, 0, DIF_SUBR_JSON, DT_ATTR_STABCMN, DT_VERS_1_11,
&dt_idops_func, "string(const char *, const char *)" },
{ "jstack", DT_IDENT_ACTFUNC, 0, DT_ACT_JSTACK, DT_ATTR_STABCMN, DT_VERS_1_0,
@@ -528,10 +534,8 @@ static const dt_ident_t _dtrace_globals[] = {
{ "walltimestamp", DT_IDENT_SCALAR, 0, DIF_VAR_WALLTIMESTAMP,
DT_ATTR_STABCMN, DT_VERS_1_0,
&dt_idops_type, "int64_t" },
-#ifdef illumos
{ "zonename", DT_IDENT_SCALAR, 0, DIF_VAR_ZONENAME,
DT_ATTR_STABCMN, DT_VERS_1_0, &dt_idops_type, "string" },
-#endif
#ifndef illumos
{ "cpu", DT_IDENT_SCALAR, 0, DIF_VAR_CPU,
Modified: head/cddl/usr.sbin/dtrace/tests/common/safety/Makefile
==============================================================================
--- head/cddl/usr.sbin/dtrace/tests/common/safety/Makefile Fri Jan 12 18:44:28 2018 (r327887)
+++ head/cddl/usr.sbin/dtrace/tests/common/safety/Makefile Fri Jan 12 19:59:46 2018 (r327888)
@@ -19,6 +19,8 @@ ${PACKAGE}FILES= \
tst.gid.d \
tst.hton.d \
tst.index.d \
+ tst.jailname.d \
+ tst.jid.d \
tst.msgdsize.d \
tst.msgsize.d \
tst.null.d \
Modified: head/sys/cddl/contrib/opensolaris/uts/common/dtrace/dtrace.c
==============================================================================
--- head/sys/cddl/contrib/opensolaris/uts/common/dtrace/dtrace.c Fri Jan 12 18:44:28 2018 (r327887)
+++ head/sys/cddl/contrib/opensolaris/uts/common/dtrace/dtrace.c Fri Jan 12 19:59:46 2018 (r327888)
@@ -3654,6 +3654,24 @@ dtrace_dif_variable(dtrace_mstate_t *mstate, dtrace_st
return (dtrace_dif_varstr(
(uintptr_t)curthread->t_procp->p_zone->zone_name,
state, mstate));
+#elif defined(__FreeBSD__)
+ /*
+ * On FreeBSD, we introduce compatibility to zonename by falling through
+ * into jailname.
+ */
+ case DIF_VAR_JAILNAME:
+ if (!dtrace_priv_kernel(state))
+ return (0);
+
+ return (dtrace_dif_varstr(
+ (uintptr_t)curthread->t_procp->p_ucred->cr_prison->pr_name,
+ state, mstate));
+
+ case DIF_VAR_JID:
+ if (!dtrace_priv_kernel(state))
+ return (0);
+
+ return ((uint64_t)curthread->t_procp->p_ucred->cr_prison->pr_id);
#else
return (0);
#endif
Modified: head/sys/cddl/contrib/opensolaris/uts/common/sys/dtrace.h
==============================================================================
--- head/sys/cddl/contrib/opensolaris/uts/common/sys/dtrace.h Fri Jan 12 18:44:28 2018 (r327887)
+++ head/sys/cddl/contrib/opensolaris/uts/common/sys/dtrace.h Fri Jan 12 19:59:46 2018 (r327888)
@@ -254,6 +254,8 @@ typedef enum dtrace_probespec {
#define DIF_VAR_GID 0x011f /* process group ID */
#define DIF_VAR_ERRNO 0x0120 /* thread errno */
#define DIF_VAR_EXECARGS 0x0121 /* process arguments */
+#define DIF_VAR_JID 0x0122 /* process jail id */
+#define DIF_VAR_JAILNAME 0x0123 /* process jail name */
#ifndef illumos
#define DIF_VAR_CPU 0x0200
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