ugetcwd / uchdir freakiness

Hello.

Well, you are not alone. Since the dosemu utilities were ported to so called "coopthreads", various people are reporting the weird problems (but for me and most others everything works OK).
I think sooner or later we'll have to return back to the known-good standalone-style tools:(
I was thinking about re-implementing the coopthreads idea based on a do_call_back() functionality, but at least for the comcom it won't work. I was asking the appropriate people several times about dropping the comcom (which itself makes more problems than the coopthreads do) but so far there were only a very inconclusive responses.

For now: type "make dosbin" which will create a standalone-style tools for you, which shouldn't have any problems.

the problem with those (well partly) is that we'd need to rely on third party compilers ("invoke tcc via dosemu").

With "make dosbin" you get some but not all. However, uchdir is only problematic when you invoke it inside "comcom" -- then it behaves like an internal command.

There was an oversight from Hans I think here: "uchdir" eats heap but isn't placed in that category.

Try this patch:

diff -urN dosemu-1.1.4.15/src/plugin/commands/comcom.c dosemu-1.1.4.16/src/plugin/commands/comcom.c
@@ -2881,11 +2881,11 @@
 	{"ecpuon",	ecpuon_main, 1},
 	{"eject",	eject_main, 1},
 	{"emumouse",	emumouse_main, 1},
-	{"ugetcwd",	ugetcwd_main, 1},
 	{"vgaoff",	vgaoff_main, 1},
 	{"vgaon",	vgaon_main, 1},
 
 #ifdef USE_HEAP_EATING_BUILTINS
+	{"ugetcwd",	ugetcwd_main, 1},
 	{"lredir",	lredir_main, 1},
 	{"unix",	unix_main, 1},
 	{"dosdbg",	dosdbg_main, 1},

diff -urN dosemu-1.1.4.15/src/plugin/commands/commands.c dosemu-1.1.4.16/src/plugin/commands/commands.c
@@ -148,7 +148,7 @@
 	struct com_starter_seg  *ctcb = owntcb->params;
 	char *s = lowmem_alloc(256);
 
-	LWORD(ecx) = 1024;
+	LWORD(ecx) = 256;
 	LWORD(edx) = COM_OFFS_OF(s);
 	do_doshelper(DOS_HELPER_GETCWD, 0);
 	com_printf("%s\n", s);

Bart