svn commit: r358116 - head/usr.bin/truss

[Kyle Evans]

Author: kevans
Date: Wed Feb 19 14:54:33 2020
New Revision: 358116
URL: https://svnweb.freebsd.org/changeset/base/358116

Log:
  truss: decode shm_open2
  
  shm_open2 is similar to shm_open, except it also takes shmflags and optional
  name to label the anonymous region for, e.g., debugging purposes.
  
  The appropriate support for decoding shmflags was added to libsysdecode in
  r358115.
  
  This is a part of D23733.
  
  Reviewed by:	kaktus

Modified:
  head/usr.bin/truss/syscall.h
  head/usr.bin/truss/syscalls.c

Modified: head/usr.bin/truss/syscall.h
==============================================================================
--- head/usr.bin/truss/syscall.h	Wed Feb 19 14:52:32 2020	(r358115)
+++ head/usr.bin/truss/syscall.h	Wed Feb 19 14:54:33 2020	(r358116)
@@ -122,6 +122,7 @@ enum Argtype {
 	Rtpriofunc,
 	RusageWho,
 	Schedpolicy,
+	ShmFlags,
 	Shutdown,
 	Signal,
 	Sigprocmask,

Modified: head/usr.bin/truss/syscalls.c
==============================================================================
--- head/usr.bin/truss/syscalls.c	Wed Feb 19 14:52:32 2020	(r358115)
+++ head/usr.bin/truss/syscalls.c	Wed Feb 19 14:54:33 2020	(r358116)
@@ -471,6 +471,9 @@ static struct syscall decoded_syscalls[] = {
 		    { Ptr | IN, 3 }, { Socklent, 4 } } },
 	{ .name = "shm_open", .ret_type = 1, .nargs = 3,
 	  .args = { { ShmName | IN, 0 }, { Open, 1 }, { Octal, 2 } } },
+	{ .name = "shm_open2", .ret_type = 1, .nargs = 5,
+	  .args = { { ShmName | IN, 0 }, { Open, 1 }, { Octal, 2 },
+		    { ShmFlags, 3 }, { BinString | IN, 4 } } },
 	{ .name = "shm_rename", .ret_type = 1, .nargs = 3,
 	  .args = { { Name | IN, 0 }, { Name | IN, 1 }, { Hex, 2 } } },
 	{ .name = "shm_unlink", .ret_type = 1, .nargs = 1,
@@ -2008,6 +2011,9 @@ print_arg(struct syscall_args *sc, unsigned long *args
 		break;
 	case Whence:
 		print_integer_arg(sysdecode_whence, fp, args[sc->offset]);
+		break;
+	case ShmFlags:
+		print_mask_arg(sysdecode_shmflags, fp, args[sc->offset]);
 		break;
 	case Sockdomain:
 		print_integer_arg(sysdecode_socketdomain, fp, args[sc->offset]);