From 9e1db66eb4b7422dd858d1c2c25ccb71086a1064 Mon Sep 17 00:00:00 2001
From: Mark Johnston <markj@FreeBSD.org>
Date: Thu, 1 Aug 2013 02:57:04 +0000
Subject: [PATCH] Properly print arguments to vfork(2) and rfork(2).

PR:		180976
Submitted by:	Yuri <yuri@tsoft.com> (original patch)
MFC after:	1 week
---
 usr.bin/truss/syscall.h  |  2 +-
 usr.bin/truss/syscalls.c | 11 +++++++++++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/usr.bin/truss/syscall.h b/usr.bin/truss/syscall.h
index 49ff9a44a519..94776a0dddb9 100644
--- a/usr.bin/truss/syscall.h
+++ b/usr.bin/truss/syscall.h
@@ -40,7 +40,7 @@ enum Argtype { None = 1, Hex, Octal, Int, Name, Ptr, Stat, Ioctl, Quad,
 	Fd_set, Sigaction, Fcntl, Mprot, Mmapflags, Whence, Readlinkres,
 	Umtx, Sigset, Sigprocmask, Kevent, Sockdomain, Socktype, Open,
 	Fcntlflag, Rusage, BinString, Shutdown, Resource, Rlimit, Timeval2,
-	Pathconf };
+	Pathconf, Rforkflags };
 
 #define	ARG_MASK	0xff
 #define	OUT	0x100
diff --git a/usr.bin/truss/syscalls.c b/usr.bin/truss/syscalls.c
index 1a9c4de04bc4..6668d7ce0836 100644
--- a/usr.bin/truss/syscalls.c
+++ b/usr.bin/truss/syscalls.c
@@ -93,6 +93,9 @@ static struct syscall syscalls[] = {
 	{ .name = "fcntl", .ret_type = 1, .nargs = 3,
 	  .args = { { Int, 0 } , { Fcntl, 1 }, { Fcntlflag | OUT, 2 } } },
 	{ .name = "fork", .ret_type = 1, .nargs = 0 },
+	{ .name = "vfork", .ret_type = 1, .nargs = 0 },
+	{ .name = "rfork", .ret_type = 1, .nargs = 1,
+	  .args = { { Rforkflags, 0 } } },
 	{ .name = "getegid", .ret_type = 1, .nargs = 0 },
 	{ .name = "geteuid", .ret_type = 1, .nargs = 0 },
 	{ .name = "getgid", .ret_type = 1, .nargs = 0 },
@@ -369,6 +372,11 @@ static struct xlat pathconf_arg[] = {
 	XEND
 };
 
+static struct xlat rfork_flags[] = {
+	X(RFPROC) X(RFNOWAIT) X(RFFDG) X(RFCFDG) X(RFTHREAD) X(RFMEM)
+	X(RFSIGSHARE) X(RFTSIGZMB) X(RFLINUXTHPN) XEND
+};
+
 #undef X
 #undef XEND
 
@@ -906,6 +914,9 @@ print_arg(struct syscall_args *sc, unsigned long *args, long retval,
 	case Pathconf:
 		tmp = strdup(xlookup(pathconf_arg, args[sc->offset]));
 		break;
+	case Rforkflags:
+		tmp = strdup(xlookup_bits(rfork_flags, args[sc->offset]));
+		break;
 	case Sockaddr: {
 		struct sockaddr_storage ss;
 		char addr[64];