From 8207f12d6a61bbeaafbc180a97b8a1ebb07a4fed Mon Sep 17 00:00:00 2001
From: Warner Losh <imp@FreeBSD.org>
Date: Fri, 23 Jun 2017 18:06:46 +0000
Subject: [PATCH] Decode FreeBSD 11 compat stat, fstat and lstat calls.

---
 usr.bin/truss/syscall.h  |  3 ++-
 usr.bin/truss/syscalls.c | 26 ++++++++++++++++++++++++++
 2 files changed, 28 insertions(+), 1 deletion(-)

diff --git a/usr.bin/truss/syscall.h b/usr.bin/truss/syscall.h
index 86f0411ba47..8510be5d3e9 100644
--- a/usr.bin/truss/syscall.h
+++ b/usr.bin/truss/syscall.h
@@ -10,6 +10,7 @@
  * BinString -- pointer to an array of chars, printed via strvisx().
  * Ptr -- pointer to some unspecified structure.  Just print as hex for now.
  * Stat -- a pointer to a stat buffer.  Prints a couple fields.
+ * Stat11 -- a pointer to a freebsd 11 stat buffer.  Prints a couple fields.
  * StatFs -- a pointer to a statfs buffer.  Prints a few fields.
  * Ioctl -- an ioctl command.  Woefully limited.
  * Quad -- a double-word value.  e.g., lseek(int, offset_t, int)
@@ -38,7 +39,7 @@
  * $FreeBSD$
  */
 
-enum Argtype { None = 1, Hex, Octal, Int, UInt, LongHex, Name, Ptr, Stat, Ioctl,
+enum Argtype { None = 1, Hex, Octal, Int, UInt, LongHex, Name, Ptr, Stat, Stat11, Ioctl,
 	Quad, Signal, Sockaddr, StringArray, Timespec, Timeval, Itimerval,
 	Pollfd, Fd_set, Sigaction, Fcntl, Mprot, Mmapflags, Whence, Readlinkres,
 	Sigset, Sigprocmask, StatFs, Kevent, Sockdomain, Socktype, Open,
diff --git a/usr.bin/truss/syscalls.c b/usr.bin/truss/syscalls.c
index c804ba2051f..80547f4a83c 100644
--- a/usr.bin/truss/syscalls.c
+++ b/usr.bin/truss/syscalls.c
@@ -45,6 +45,7 @@ __FBSDID("$FreeBSD$");
 #include <sys/ptrace.h>
 #include <sys/resource.h>
 #include <sys/socket.h>
+#define _WANT_FREEBSD11_STAT
 #include <sys/stat.h>
 #include <sys/un.h>
 #include <sys/wait.h>
@@ -215,6 +216,14 @@ static struct syscall decoded_syscalls[] = {
 	  .args = { { Int, 0 }, { Fcntl, 1 }, { Fcntlflag, 2 } } },
 	{ .name = "flock", .ret_type = 1, .nargs = 2,
 	  .args = { { Int, 0 }, { Flockop, 1 } } },
+	{ .name = "compat11.fstat", .ret_type = 1, .nargs = 2,
+	  .args = { { Int, 0 }, { Stat11 | OUT, 1 } } },
+	{ .name = "compat11.lstat", .ret_type = 1, .nargs = 2,
+	  .args = { { Name | IN, 0 }, { Stat11 | OUT, 1 } } },
+	{ .name = "compat11.stat", .ret_type = 1, .nargs = 2,
+	  .args = { { Name | IN, 0 }, { Stat11 | OUT, 1 } } },
+	{ .name = "compat11.stat", .ret_type = 1, .nargs = 2,
+	  .args = { { Name | IN, 0 }, { Stat11 | OUT, 1 } } },
 	{ .name = "fstat", .ret_type = 1, .nargs = 2,
 	  .args = { { Int, 0 }, { Stat | OUT, 1 } } },
 	{ .name = "fstatat", .ret_type = 1, .nargs = 4,
@@ -1885,6 +1894,23 @@ print_arg(struct syscall_args *sc, unsigned long *args, long *retval,
 		}
 		break;
 	}
+	case Stat11: {
+		struct freebsd11_stat st;
+
+		if (get_struct(pid, (void *)args[sc->offset], &st, sizeof(st))
+		    != -1) {
+			char mode[12];
+
+			strmode(st.st_mode, mode);
+			fprintf(fp,
+			    "{ mode=%s,inode=%ju,size=%jd,blksize=%ld }", mode,
+			    (uintmax_t)st.st_ino, (intmax_t)st.st_size,
+			    (long)st.st_blksize);
+		} else {
+			fprintf(fp, "0x%lx", args[sc->offset]);
+		}
+		break;
+	}
 	case StatFs: {
 		unsigned int i;
 		struct statfs buf;