Teach truss to print symbolic signal names (e.g. SIGHUP instead of 0x01).

2 files changed, 24 insertions, 3 deletions

diff --git a/usr.bin/truss/syscall.h b/usr.bin/truss/syscall.h
index 026be11..5f3757c 100644
--- a/usr.bin/truss/syscall.h
+++ b/usr.bin/truss/syscall.h
@@ -18,10 +18,11 @@
  * IN (meaning that the data is passed *into* the system call).
  */
 /*
- * $Id: syscall.h,v 1.2 1997/12/06 06:51:13 sef Exp $
+ * $Id: syscall.h,v 1.3 1997/12/20 18:40:41 sef Exp $
  */
 
-enum Argtype { None = 1, Hex, Octal, Int, String, Ptr, Stat, Ioctl, Quad };
+enum Argtype { None = 1, Hex, Octal, Int, String, Ptr, Stat, Ioctl, Quad,
+	Signal };
 
 #define ARG_MASK	0xff
 #define OUT	0x100
diff --git a/usr.bin/truss/syscalls.c b/usr.bin/truss/syscalls.c
index 134bae6..53865fd 100644
--- a/usr.bin/truss/syscalls.c
+++ b/usr.bin/truss/syscalls.c
@@ -31,7 +31,7 @@
 
 #ifndef lint
 static const char rcsid[] =
-	"$Id: syscalls.c,v 1.6 1998/10/15 04:31:44 sef Exp $";
+	"$Id: syscalls.c,v 1.7 1999/08/05 12:03:50 des Exp $";
 #endif /* not lint */
 
 /*
@@ -45,6 +45,7 @@ static const char rcsid[] =
 #include <string.h>
 #include <unistd.h>
 #include <sys/types.h>
+#include <signal.h>
 #include "syscall.h"
 
 /*
@@ -80,6 +81,8 @@ struct syscall syscalls[] = {
 	{ "break", 1, 1, { { Hex, 0 }}},
 	{ "exit", 0, 1, { { Hex, 0 }}},
 	{ "access", 1, 2, { { String | IN, 0 }, { Int, 1 }}},
+	{ "sigaction", 1, 3,
+	  { { Signal, 0 }, { Ptr | IN, 1 }, { Ptr | OUT, 2 }}},
 	{ 0, 0, 0, { { 0, 0 }}},
 };
 
@@ -217,6 +220,23 @@ print_arg(int fd, struct syscall_args *sc, unsigned long *args) {
 	sprintf(tmp, "0x%lx", args[sc->offset]);
       }
     }
+    break;
+  case Signal:
+    {
+      long sig;
+
+      sig = args[sc->offset];
+      tmp = malloc(12);
+      if (sig > 0 && sig < NSIG) {
+	int i;
+	sprintf(tmp, "sig%s", sys_signame[sig]);
+	for (i = 0; tmp[i] != '\0'; ++i)
+	  tmp[i] = toupper(tmp[i]);
+      } else {
+        sprintf(tmp, "%ld", sig);
+      }
+    }
+    break;
   }
   return tmp;
 }