5 files changed, 61 insertions, 4 deletions
diff --git a/usr/src/tools/ctf/cvt/Makefile.com b/usr/src/tools/ctf/cvt/Makefile.com
index 5385b3769f..d909031167 100644
--- a/usr/src/tools/ctf/cvt/Makefile.com
+++ b/usr/src/tools/ctf/cvt/Makefile.com
@@ -32,6 +32,7 @@ PROG=ctfconvert ctfmerge
 
 GENSRCS= \
 	alist.c \
+	altexec.c \
 	barrier.c \
 	ctf.c \
 	fifo.c \
diff --git a/usr/src/tools/ctf/cvt/altexec.c b/usr/src/tools/ctf/cvt/altexec.c
new file mode 100644
index 0000000000..c986c0731a
--- /dev/null
+++ b/usr/src/tools/ctf/cvt/altexec.c
@@ -0,0 +1,45 @@
+/*
+ * 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 (c) 2015, Joyent, Inc.
+ */
+
+/*
+ * Alternate execution engine for CTF tools
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "ctftools.h"
+
+void
+ctf_altexec(const char *env, int argc, char **argv)
+{
+	const char *alt;
+	char *altexec;
+
+	alt = getenv(env);
+	if (alt == NULL || *alt == '\0')
+		return;
+
+	altexec = strdup(alt);
+	if (altexec == NULL)
+		terminate("failed to allocate memory for altexec\n");
+
+	if (unsetenv(env) != 0)
+		aborterr("failed to remove %s from environment", env);
+
+	(void) execv(altexec, argv);
+	terminate("failed to altexec %s", altexec);
+}
diff --git a/usr/src/tools/ctf/cvt/ctfconvert.c b/usr/src/tools/ctf/cvt/ctfconvert.c
index 756549e545..5cb39d0929 100644
--- a/usr/src/tools/ctf/cvt/ctfconvert.c
+++ b/usr/src/tools/ctf/cvt/ctfconvert.c
@@ -23,8 +23,6 @@
  * Use is subject to license terms.
  */
 
-#pragma ident	"%Z%%M%	%I%	%E% SMI"
-
 /*
  * Given a file containing sections with stabs data, convert the stabs data to
  * CTF data, and replace the stabs sections with a CTF section.
@@ -148,6 +146,7 @@ main(int argc, char **argv)
 {
 	tdata_t *filetd, *mstrtd;
 	char *label = NULL;
+	char *altexec;
 	int verbose = 0;
 	int ignore_non_c = 0;
 	int keep_stabs = 0;
@@ -159,11 +158,20 @@ main(int argc, char **argv)
 
 	progname = basename(argv[0]);
 
+	ctf_altexec("CTFCONVERT_ALTEXEC", argc, argv);
+
 	if (getenv("CTFCONVERT_DEBUG_LEVEL"))
 		debug_level = atoi(getenv("CTFCONVERT_DEBUG_LEVEL"));
 	if (getenv("CTFCONVERT_DEBUG_PARSE"))
 		debug_parse = atoi(getenv("CTFCONVERT_DEBUG_PARSE"));
 
+	if ((altexec = getenv("CTFCONVERT_ALTEXEC")) != NULL) {
+		(void) unsetenv("CTFCONVERT_ALTEXEC");
+		(void) execv(altexec, argv);
+		(void) fprintf(stderr, "ctfconvert altexec failed to "
+		    "run %s: %s\n", altexec, strerror(errno));
+	}
+
 	while ((c = getopt(argc, argv, ":l:L:o:givs")) != EOF) {
 		switch (c) {
 		case 'l':
diff --git a/usr/src/tools/ctf/cvt/ctfmerge.c b/usr/src/tools/ctf/cvt/ctfmerge.c
index 2d00a566be..c1de781df8 100644
--- a/usr/src/tools/ctf/cvt/ctfmerge.c
+++ b/usr/src/tools/ctf/cvt/ctfmerge.c
@@ -23,8 +23,6 @@
  * Use is subject to license terms.
  */
 
-#pragma ident	"%Z%%M%	%I%	%E% SMI"
-
 /*
  * Given several files containing CTF data, merge and uniquify that data into
  * a single CTF section in an output file.
@@ -748,6 +746,8 @@ main(int argc, char **argv)
 
 	progname = basename(argv[0]);
 
+	ctf_altexec("CTFMERGE_ALTEXEC", argc, argv);
+
 	if (getenv("CTFMERGE_DEBUG_LEVEL"))
 		debug_level = atoi(getenv("CTFMERGE_DEBUG_LEVEL"));
 
diff --git a/usr/src/tools/ctf/cvt/ctftools.h b/usr/src/tools/ctf/cvt/ctftools.h
index fd9d454e06..895d2f8491 100644
--- a/usr/src/tools/ctf/cvt/ctftools.h
+++ b/usr/src/tools/ctf/cvt/ctftools.h
@@ -453,6 +453,9 @@ void warning(char *, ...);
 void vadebug(int, char *, va_list);
 void debug(int, char *, ...);
 
+/* altexec.c */
+void ctf_altexec(const char *, int argc, char **);
+
 #ifdef __cplusplus
 }
 #endif