--- strace-4.5.12/system.c.orig	2005-06-01 23:22:06 +0400

+++ strace-4.5.12/system.c	2005-07-16 18:33:42 +0400

@@ -53,6 +53,7 @@

 #define MS_POSIXACL	(1<<16)	/* VFS does not apply the umask */

 #define MS_ACTIVE	(1<<30)

 #define MS_NOUSER	(1<<31)

+#define MS_MGC_VAL	0xc0ed0000	/* Magic flag number */

 #include <sys/socket.h>

 #include <netinet/in.h>

@@ -79,6 +80,7 @@

 #include <linux/sysctl.h>

 static const struct xlat mount_flags[] = {

+	{ MS_MGC_VAL,	"MS_MGC_VAL"	},

 	{ MS_RDONLY,	"MS_RDONLY"	},

 	{ MS_NOSUID,	"MS_NOSUID"	},

 	{ MS_NODEV,	"MS_NODEV"	},

@@ -113,7 +115,8 @@ struct tcb *tcp;

 			tprintf("%#lx", tcp->u_arg[2]);

 		tprintf(", ");

 		printflags(mount_flags, tcp->u_arg[3], "MS_???");

-		tprintf(", %#lx", tcp->u_arg[4]);

+		tprintf(", ");

+		printstr(tcp, tcp->u_arg[4], -1);

 	}

 	return 0;

 }