From 083b5a0e40e7eb56469ac1705ae437f4353d15ee Mon Sep 17 00:00:00 2001
From: Russ Cox <rsc@swtch.com>
Date: Sun, 21 May 2006 23:32:55 +0000
Subject: [PATCH] setmalloctag

---
 kern/devcons.c |  5 +++++
 kern/fns.h     |  3 ++-
 kern/posix.c   |  6 ++++++
 kern/win32.c   | 24 ++++++++++++++++++++++++
 4 files changed, 37 insertions(+), 1 deletion(-)

diff --git a/kern/devcons.c b/kern/devcons.c
index 4525397..3b1a282 100644
--- a/kern/devcons.c
+++ b/kern/devcons.c
@@ -464,6 +464,7 @@ enum{
 	Qrandom,
 	Qreboot,
 	Qsecstore,
+	Qshowfile,
 	Qsnarf,
 	Qswap,
 	Qsysname,
@@ -497,6 +498,7 @@ static Dirtab consdir[]={
 	"random",	{Qrandom},	0,		0444,
 	"reboot",	{Qreboot},	0,		0664,
 	"secstore",	{Qsecstore},	0,		0666,
+	"showfile",	{Qshowfile},	0,	0220,
 	"snarf",	{Qsnarf},		0,		0666,
 	"swap",		{Qswap},	0,		0664,
 	"sysname",	{Qsysname},	0,		0664,
@@ -915,6 +917,9 @@ conswrite(Chan *c, void *va, long n, vlong off)
 		memmove(secstorebuf+offset, va, n);
 		return n;
 
+	case Qshowfile:
+		return showfilewrite(a, n);
+
 	case Qsnarf:
 		if(offset >= SnarfSize || offset+n >= SnarfSize)
 			error(Etoobig);
diff --git a/kern/fns.h b/kern/fns.h
index cc4bfce..97a9359 100644
--- a/kern/fns.h
+++ b/kern/fns.h
@@ -305,10 +305,11 @@ void		segclock(ulong);
 void		segpage(Segment*, Page*);
 void		setkernur(Ureg*, Proc*);
 int		setlabel(Label*);
-void		setmalloctag(void*, ulong);
+void		setmalloctag(void*, uintptr);
 void		setrealloctag(void*, ulong);
 void		setregisters(Ureg*, char*, char*, int);
 void		setswapchan(Chan*);
+long		showfilewrite(char*, int);
 char*		skipslash(char*);
 void		sleep(Rendez*, int(*)(void*), void*);
 void*		smalloc(ulong);
diff --git a/kern/posix.c b/kern/posix.c
index 6069987..22f3f8b 100644
--- a/kern/posix.c
+++ b/kern/posix.c
@@ -213,3 +213,9 @@ ticks(void)
 	return (t.tv_sec-sec0)*1000+(t.tv_usec-usec0+500)/1000;
 }
 
+long
+showfilewrite(char *a, int n)
+{
+	error("not implemented");
+	return -1;
+}
diff --git a/kern/win32.c b/kern/win32.c
index 8c19ac8..fa79c1d 100644
--- a/kern/win32.c
+++ b/kern/win32.c
@@ -444,3 +444,27 @@ oserrstr(void)
 {
 	osrerrstr(up->errstr, ERRMAX);
 }
+
+long
+showfilewrite(char *a, int n)
+{
+	Rune *action, *arg, *cmd;
+	static Rune Lopen[] = { 'o', 'p', 'e', 'n', 0 };
+
+	cmd = runesmprint("%.*s", n, a);
+	if(cmd == nil)
+		error("out of memory");
+	if(cmd[runestrlen(cmd)-1] == '\n')
+		cmd[runestrlen(cmd)] = 0;
+	p = runestrchr(cmd, ' ');
+	if(p){
+		action = cmd;
+		*p++ = 0;
+		arg = p;
+	}else{
+		action = Lopen;
+		arg = cmd;
+	}
+	ShellExecute(0, 0, action, arg, 0, SW_SHOWNORMAL);
+	return n;
+}