* external.cc (cygwin_internal): Initialize various internal settings if

required to allow use of some things from user loaded DLL.
(CW_STRACE_ON): Add new feature.
(CW_CYGWIN_PID_TO_WINPID): Ditto.
* pinfo.cc (set_myself): Call "strace.hello" to initiate possible strace
session.
(pinfo::init): Guard against dereferencing uninitialized myself.
* sigproc.cc (wait_sig): Call strace.hello() when __SIGTRACE "signal" received.
* strace.cc (strace::hello): New method.
* wincap.cc (wincapc::init): Avoid initializing if already initialized.
* wincap.h (wincapc::wincapc): New method.
* include/sys/cygwin.h: Add new CW_ enums.  Kludge typedefs of {g,u}id_t if
required.
* strace.h (strace::hello): Declare new method.

winsup/cygwin/ChangeLog

@@ -1,3 +1,21 @@
+2002-01-28  Christopher Faylor  <cgf@redhat.com>
+
+	* external.cc (cygwin_internal): Initialize various internal settings
+	if required to allow use of some things from user loaded DLL.
+	(CW_STRACE_ON): Add new feature.
+	(CW_CYGWIN_PID_TO_WINPID): Ditto.
+	* pinfo.cc (set_myself): Call "strace.hello" to initiate possible
+	strace session.
+	(pinfo::init): Guard against dereferencing uninitialized myself.
+	* sigproc.cc (wait_sig): Call strace.hello() when __SIGTRACE "signal"
+	received.
+	* strace.cc (strace::hello): New method.
+	* wincap.cc (wincapc::init): Avoid initializing if already initialized.
+	* wincap.h (wincapc::wincapc): New method.
+	* include/sys/cygwin.h: Add new CW_ enums.  Kludge typedefs of
+	{g,u}id_t if required.
+	* strace.h (strace::hello): Declare new method.
+
 2002-01-28  Earnie Boyd  <earnie@users.sf.net>
 
 	* include/sys/strace.h (_STRACE_ON): Define.

winsup/cygwin/external.cc

@@ -26,6 +26,8 @@ details. */
 #include "path.h"
 #include "dtable.h"
 #include "cygheap.h"
+#include "wincap.h"
+#include "heap.h"
 
 static external_pinfo *
 fillout_pinfo (pid_t pid, int winpid)
@@ -121,6 +123,16 @@ cygwin_internal (cygwin_getinfo_types t, ...)
 {
   va_list arg;
   va_start (arg, t);
+  if (t != CW_USER_DATA)
+    {
+      wincap.init ();
+      if (!myself)
+	{
+	  memory_init ();
+	  malloc_init ();
+	  set_myself (1);
+	}
+    }
 
   switch (t)
     {
@@ -194,6 +206,26 @@ cygwin_internal (cygwin_getinfo_types t, ...)
 #	  undef cr
 	}
 
+      case CW_STRACE_ON:
+	{
+	  pid_t pid = va_arg (arg, pid_t);
+	  pinfo p (pid);
+	  if (p)
+	    {
+	      sig_send (p, __SIGSTRACE);
+	      return 0;
+	    }
+	  else
+	    {
+	      set_errno (ESRCH);
+	      return (DWORD) -1;
+	    }
+	}
+      case CW_CYGWIN_PID_TO_WINPID:
+	{
+	  pinfo p (va_arg (arg, pid_t));
+	  return p ? p->dwProcessId : 0;
+	}
       default:
 	return (DWORD) -1;
     }

winsup/cygwin/include/sys/cygwin.h

@@ -66,7 +66,10 @@ typedef enum
     CW_INIT_EXCEPTIONS,
     CW_GET_CYGDRIVE_INFO,
     CW_SET_CYGWIN_REGISTRY_NAME,
-    CW_GET_CYGWIN_REGISTRY_NAME
+    CW_GET_CYGWIN_REGISTRY_NAME,
+    CW_STRACE_ON,
+    CW_STRACE_OFF,
+    CW_CYGWIN_PID_TO_WINPID
   } cygwin_getinfo_types;
 
 #define CW_NEXTPID	0x80000000	// or with pid to get next one
@@ -205,6 +208,11 @@ extern int cygwin_attach_handle_to_fd (char *, int, HANDLE, mode_t, DWORD);
 
 #define TTY_CONSOLE	0x40000000
 
+#ifndef _SYS_TYPES_H
+typedef short uid_t;
+typedef short gid_t;
+#endif
+
 struct external_pinfo
   {
   pid_t pid;

winsup/cygwin/include/sys/strace.h

@@ -44,6 +44,7 @@ public:
   int lmicrosec;
   int execing;
   strace() : version(1) {}
+  void hello ();
   void prntf (unsigned, const char *func, const char *, ...) /*__attribute__ ((regparm(3)))*/;
   void vprntf (unsigned, const char *func, const char *, va_list ap) /*__attribute__ ((regparm(3)))*/;
   void wm (int message, int word, int lon) __attribute__ ((regparm(3)));

winsup/cygwin/pinfo.cc

@@ -62,33 +62,14 @@ set_myself (pid_t pid, HANDLE h)
   myself->process_state |= PID_IN_USE;
   myself->start_time = time (NULL); /* Register our starting time. */
 
-  char buf[30];
-  __small_sprintf (buf, "cYg%8x %x", _STRACE_INTERFACE_ACTIVATE_ADDR,
-		   &strace.active);
-  OutputDebugString (buf);
-
   (void) GetModuleFileName (NULL, myself->progname,
 			    sizeof(myself->progname));
-  if (strace.active)
+  strace.hello ();
-    {
-      strace.prntf (1, NULL, "**********************************************");
-      strace.prntf (1, NULL, "Program name: %s (%d)", myself->progname, myself->pid);
-      strace.prntf (1, NULL, "App version:  %d.%d, api: %d.%d",
-		       user_data->dll_major, user_data->dll_minor,
-		       user_data->api_major, user_data->api_minor);
-      strace.prntf (1, NULL, "DLL version:  %d.%d, api: %d.%d",
-		       cygwin_version.dll_major, cygwin_version.dll_minor,
-		       cygwin_version.api_major, cygwin_version.api_minor);
-      strace.prntf (1, NULL, "DLL build:    %s", cygwin_version.dll_build_date);
-      strace.prntf (1, NULL, "OS version:   Windows %s", wincap.osname ());
-      strace.prntf (1, NULL, "**********************************************");
-    }
-
   return;
 }
 
 /* Initialize the process table entry for the current task.
-   This is not called for fork'd tasks, only exec'd ones.  */
+   This is not called for forked tasks, only execed ones.  */
 void __stdcall
 pinfo_init (char **envp, int envc)
 {
@@ -136,7 +117,7 @@ _pinfo::exit (UINT n, bool norecord)
 void
 pinfo::init (pid_t n, DWORD flag, HANDLE in_h)
 {
-  if (n == myself->pid)
+  if (myself && n == myself->pid)
     {
       procinfo = myself;
       destroy = 0;
@@ -276,7 +257,7 @@ a cygwin pid.</para>
 extern "C" pid_t
 cygwin_winpid_to_pid (int winpid)
 {
-  pinfo p (winpid);
+  pinfo p (cygwin_pid (winpid));
   if (p)
     return p->pid;
 

winsup/cygwin/sigproc.cc

@@ -1184,7 +1184,7 @@ wait_sig (VOID *)
 
 		/* Internal signal to force a flush of strace data to disk. */
 		case __SIGSTRACE:
-		  // proc_strace ();	// Dump cached strace.prntf stuff.
+		  strace.hello ();
 		  break;
 
 		/* A normal UNIX signal */

winsup/cygwin/strace.cc

@@ -17,6 +17,8 @@ details. */
 #include "sync.h"
 #include "sigproc.h"
 #include "pinfo.h"
+#include "perprocess.h"
+#include "cygwin_version.h"
 
 #define PROTECT(x) x[sizeof(x)-1] = 0
 #define CHECK(x) if (x[sizeof(x)-1] != 0) { small_printf("array bound exceeded %d\n", __LINE__); ExitProcess(1); }
@@ -28,6 +30,29 @@ class NO_COPY strace strace;
 
 #ifndef NOSTRACE
 
+void
+strace::hello()
+{
+  char buf[30];
+  __small_sprintf (buf, "cYg%8x %x", _STRACE_INTERFACE_ACTIVATE_ADDR, &active);
+  OutputDebugString (buf);
+
+  if (active)
+    {
+      prntf (1, NULL, "**********************************************");
+      prntf (1, NULL, "Program name: %s (%d)", myself->progname, myself->pid);
+      prntf (1, NULL, "App version:  %d.%d, api: %d.%d",
+	     user_data->dll_major, user_data->dll_minor,
+	     user_data->api_major, user_data->api_minor);
+      prntf (1, NULL, "DLL version:  %d.%d, api: %d.%d",
+	     cygwin_version.dll_major, cygwin_version.dll_minor,
+	     cygwin_version.api_major, cygwin_version.api_minor);
+      prntf (1, NULL, "DLL build:    %s", cygwin_version.dll_build_date);
+      prntf (1, NULL, "OS version:   Windows %s", wincap.osname ());
+      prntf (1, NULL, "**********************************************");
+    }
+}
+
 int
 strace::microseconds()
 {

winsup/cygwin/wincap.cc

@@ -414,6 +414,9 @@ wincapc::init ()
 {
   const char *os;
 
+  if (caps)
+    return;		// already initialized
+
   memset (&version, 0, sizeof version);
   version.dwOSVersionInfoSize = sizeof version;
   GetVersionEx (&version);

winsup/cygwin/wincap.h

@@ -55,6 +55,7 @@ class wincapc
   void          *caps;
 
 public:
+  wincapc (): caps (NULL) {}
   void init ();
 
   void set_chunksize (DWORD nchunksize);