Adding upstream version 1:0.1.9998svn3589+dfsg.upstream/1%0.1.9998svn3589+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1485 insertions, 0 deletions

diff --git a/src/kash/eval.c b/src/kash/eval.c
new file mode 100644
index 0000000..5cbfac1
--- /dev/null
+++ b/src/kash/eval.c
@@ -0,0 +1,1485 @@
+/*	$NetBSD: eval.c,v 1.84 2005/06/23 23:05:29 christos Exp $	*/
+
+/*-
+ * Copyright (c) 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if 0
+#ifndef lint
+static char sccsid[] = "@(#)eval.c	8.9 (Berkeley) 6/8/95";
+#else
+__RCSID("$NetBSD: eval.c,v 1.84 2005/06/23 23:05:29 christos Exp $");
+#endif /* not lint */
+#endif
+
+#include <stddef.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <sys/types.h>
+#ifdef HAVE_SYSCTL_H
+# ifdef __OpenBSD__ /* joyful crap */
+#  include <sys/param.h>
+#  undef psh
+# endif
+# include <sys/sysctl.h>
+#endif
+
+/*
+ * Evaluate a command.
+ */
+
+#include "shell.h"
+#include "nodes.h"
+#include "syntax.h"
+#include "expand.h"
+#include "parser.h"
+#include "jobs.h"
+#include "eval.h"
+#include "builtins.h"
+#include "options.h"
+#include "exec.h"
+#include "redir.h"
+#include "input.h"
+#include "output.h"
+#include "trap.h"
+#include "var.h"
+#include "memalloc.h"
+#include "error.h"
+#include "show.h"
+#include "mystring.h"
+#include "main.h"
+#ifndef SMALL
+# include "myhistedit.h"
+#endif
+#include "shinstance.h"
+
+
+/* flags in argument to evaltree */
+#define EV_EXIT 01		/* exit after evaluating tree */
+#define EV_TESTED 02		/* exit status is checked; ignore -e flag */
+#define EV_BACKCMD 04		/* command executing within back quotes */
+
+/*int evalskip;*/			/* set if we are skipping commands */
+/*STATIC int skipcount;*/		/* number of levels to skip */
+/*MKINIT int loopnest;*/		/* current loop nesting level */
+/*int funcnest;*/			/* depth of function calls */
+
+
+/*char *commandname;*/
+/*struct strlist *cmdenviron;*/
+/*int exitstatus;*/			/* exit status of last command */
+/*int back_exitstatus;*/		/* exit status of backquoted command */
+
+
+STATIC void evalloop(shinstance *, union node *, int);
+STATIC void evalfor(shinstance *, union node *, int);
+STATIC void evalcase(shinstance *, union node *, int);
+STATIC void evalsubshell(shinstance *, union node *, int);
+STATIC unsigned expredir(shinstance *, union node *);
+STATIC void evalpipe(shinstance *, union node *);
+STATIC void evalcommand(shinstance *, union node *, int, struct backcmd *);
+STATIC void prehash(shinstance *, union node *);
+
+
+/*
+ * Called to reset things after an exception.
+ */
+
+#ifdef mkinit
+INCLUDE "eval.h"
+
+RESET {
+	psh->evalskip = 0;
+	psh->loopnest = 0;
+	psh->funcnest = 0;
+}
+
+SHELLPROC {
+	psh->exitstatus = 0;
+}
+#endif
+
+static int
+sh_pipe(shinstance *psh, int fds[2])
+{
+	int nfd;
+
+	if (shfile_pipe(&psh->fdtab, fds))
+		return -1;
+
+	if (fds[0] < 3) {
+		nfd = shfile_fcntl(&psh->fdtab, fds[0], F_DUPFD, 3);
+		if (nfd != -1) {
+			shfile_close(&psh->fdtab, fds[0]);
+			fds[0] = nfd;
+		}
+	}
+
+	if (fds[1] < 3) {
+		nfd = shfile_fcntl(&psh->fdtab, fds[1], F_DUPFD, 3);
+		if (nfd != -1) {
+			shfile_close(&psh->fdtab, fds[1]);
+			fds[1] = nfd;
+		}
+	}
+	return 0;
+}
+
+
+/*
+ * The eval commmand.
+ */
+
+int
+evalcmd(shinstance *psh, int argc, char **argv)
+{
+	char *p;
+	char *concat;
+	char **ap;
+
+	if (argc > 1) {
+		p = argv[1];
+		if (argc > 2) {
+			STARTSTACKSTR(psh, concat);
+			ap = argv + 2;
+			for (;;) {
+				while (*p)
+					STPUTC(psh, *p++, concat);
+				if ((p = *ap++) == NULL)
+					break;
+				STPUTC(psh, ' ', concat);
+			}
+			STPUTC(psh, '\0', concat);
+			p = grabstackstr(psh, concat);
+		}
+		evalstring(psh, p, EV_TESTED);
+	}
+	return psh->exitstatus;
+}
+
+
+/*
+ * Execute a command or commands contained in a string.
+ */
+
+void
+evalstring(shinstance *psh, char *s, int flag)
+{
+	union node *n;
+	struct stackmark smark;
+
+	setstackmark(psh, &smark);
+	setinputstring(psh, s, 1);
+
+	while ((n = parsecmd(psh, 0)) != NEOF) {
+		evaltree(psh, n, flag);
+		popstackmark(psh, &smark);
+	}
+	popfile(psh);
+	popstackmark(psh, &smark);
+}
+
+
+
+/*
+ * Evaluate a parse tree.  The value is left in the global variable
+ * exitstatus.
+ */
+
+void
+evaltree(shinstance *psh, union node *n, int flags)
+{
+	if (n == NULL) {
+		TRACE((psh, "evaltree(NULL) called\n"));
+		psh->exitstatus = 0;
+		goto out;
+	}
+#ifndef SMALL
+	psh->displayhist = 1;	/* show history substitutions done with fc */
+#endif
+	TRACE((psh, "pid %" SHPID_PRI ", evaltree(%p: %d, %d) called\n",
+	       sh_getpid(psh), n, n->type, flags));
+	switch (n->type) {
+	case NSEMI:
+		evaltree(psh, n->nbinary.ch1, flags & EV_TESTED);
+		if (psh->evalskip)
+			goto out;
+		evaltree(psh, n->nbinary.ch2, flags);
+		break;
+	case NAND:
+		evaltree(psh, n->nbinary.ch1, EV_TESTED);
+		if (psh->evalskip || psh->exitstatus != 0)
+			goto out;
+		evaltree(psh, n->nbinary.ch2, flags);
+		break;
+	case NOR:
+		evaltree(psh, n->nbinary.ch1, EV_TESTED);
+		if (psh->evalskip || psh->exitstatus == 0)
+			goto out;
+		evaltree(psh, n->nbinary.ch2, flags);
+		break;
+	case NREDIR: {
+		unsigned const oldfnames = expredir(psh, n->nredir.redirect);
+		redirect(psh, n->nredir.redirect, REDIR_PUSH);
+		evaltree(psh, n->nredir.n, flags);
+		popredir(psh);
+		expredircleanup(psh, oldfnames);
+		break;
+	}
+	case NSUBSHELL:
+		evalsubshell(psh, n, flags);
+		break;
+	case NBACKGND:
+		evalsubshell(psh, n, flags);
+		break;
+	case NIF: {
+		evaltree(psh, n->nif.test, EV_TESTED);
+		if (psh->evalskip)
+			goto out;
+		if (psh->exitstatus == 0)
+			evaltree(psh, n->nif.ifpart, flags);
+		else if (n->nif.elsepart)
+			evaltree(psh, n->nif.elsepart, flags);
+		else
+			psh->exitstatus = 0;
+		break;
+	}
+	case NWHILE:
+	case NUNTIL:
+		evalloop(psh, n, flags);
+		break;
+	case NFOR:
+		evalfor(psh, n, flags);
+		break;
+	case NCASE:
+		evalcase(psh, n, flags);
+		break;
+	case NDEFUN:
+		defun(psh, n->narg.text, n->narg.next);
+		psh->exitstatus = 0;
+		break;
+	case NNOT:
+		evaltree(psh, n->nnot.com, EV_TESTED);
+		psh->exitstatus = !psh->exitstatus;
+		break;
+	case NPIPE:
+		evalpipe(psh, n);
+		break;
+	case NCMD:
+		evalcommand(psh, n, flags, (struct backcmd *)NULL);
+		break;
+	default:
+		out1fmt(psh, "Node type = %d\n", n->type);
+		flushout(&psh->output);
+		break;
+	}
+out:
+	if (psh->pendingsigs)
+		dotrap(psh);
+	if ((flags & EV_EXIT) != 0)
+		exitshell(psh, psh->exitstatus);
+}
+
+
+STATIC void
+evalloop(shinstance *psh, union node *n, int flags)
+{
+	int status;
+
+	psh->loopnest++;
+	status = 0;
+	for (;;) {
+		evaltree(psh, n->nbinary.ch1, EV_TESTED);
+		if (psh->evalskip) {
+skipping:	  if (psh->evalskip == SKIPCONT && --psh->skipcount <= 0) {
+				psh->evalskip = 0;
+				continue;
+			}
+			if (psh->evalskip == SKIPBREAK && --psh->skipcount <= 0)
+				psh->evalskip = 0;
+			break;
+		}
+		if (n->type == NWHILE) {
+			if (psh->exitstatus != 0)
+				break;
+		} else {
+			if (psh->exitstatus == 0)
+				break;
+		}
+		evaltree(psh, n->nbinary.ch2, flags & EV_TESTED);
+		status = psh->exitstatus;
+		if (psh->evalskip)
+			goto skipping;
+	}
+	psh->loopnest--;
+	psh->exitstatus = status;
+}
+
+
+
+STATIC void
+evalfor(shinstance *psh, union node *n, int flags)
+{
+	struct arglist arglist;
+	union node *argp;
+	struct strlist *sp;
+	struct stackmark smark;
+	int status = 0;
+
+	setstackmark(psh, &smark);
+	arglist.lastp = &arglist.list;
+	for (argp = n->nfor.args ; argp ; argp = argp->narg.next) {
+		expandarg(psh, argp, &arglist, EXP_FULL | EXP_TILDE);
+		if (psh->evalskip)
+			goto out;
+	}
+	*arglist.lastp = NULL;
+
+	psh->loopnest++;
+	for (sp = arglist.list ; sp ; sp = sp->next) {
+		setvar(psh, n->nfor.var, sp->text, 0);
+		evaltree(psh, n->nfor.body, flags & EV_TESTED);
+		status = psh->exitstatus;
+		if (psh->evalskip) {
+			if (psh->evalskip == SKIPCONT && --psh->skipcount <= 0) {
+				psh->evalskip = 0;
+				continue;
+			}
+			if (psh->evalskip == SKIPBREAK && --psh->skipcount <= 0)
+				psh->evalskip = 0;
+			break;
+		}
+	}
+	psh->loopnest--;
+	psh->exitstatus = status;
+out:
+	popstackmark(psh, &smark);
+}
+
+
+
+STATIC void
+evalcase(shinstance *psh, union node *n, int flags)
+{
+	union node *cp;
+	union node *patp;
+	struct arglist arglist;
+	struct stackmark smark;
+	int status = 0;
+
+	setstackmark(psh, &smark);
+	arglist.lastp = &arglist.list;
+	expandarg(psh, n->ncase.expr, &arglist, EXP_TILDE);
+	for (cp = n->ncase.cases ; cp && psh->evalskip == 0 ; cp = cp->nclist.next) {
+		for (patp = cp->nclist.pattern ; patp ; patp = patp->narg.next) {
+			if (casematch(psh, patp, arglist.list->text)) {
+				if (psh->evalskip == 0) {
+					evaltree(psh, cp->nclist.body, flags);
+					status = psh->exitstatus;
+				}
+				goto out;
+			}
+		}
+	}
+out:
+	psh->exitstatus = status;
+	popstackmark(psh, &smark);
+}
+
+
+#ifdef KASH_USE_FORKSHELL2
+/*
+ * Child of evalsubshell.
+ */
+struct evalsubshellchild
+{
+    int flags;
+    int backgnd;
+};
+
+static int evalsubshell_child(shinstance *psh, union node *n, void *argp)
+{
+    struct evalsubshellchild args = *(struct evalsubshellchild *)argp;
+
+    INTON;
+    if (args.backgnd)
+	    args.flags &=~ EV_TESTED;
+    redirect(psh, n->nredir.redirect, 0);
+    /* never returns */
+    evaltree(psh, n->nredir.n, args.flags | EV_EXIT);
+    /** @todo make us return here. */
+    return 0;
+}
+#endif /* KASH_USE_FORKSHELL2 */
+
+
+/*
+ * Kick off a subshell to evaluate a tree.
+ */
+
+STATIC void
+evalsubshell(shinstance *psh, union node *n, int flags)
+{
+	struct job *jp;
+	int backgnd = (n->type == NBACKGND);
+	unsigned expfnamedepth;
+
+	expfnamedepth = expredir(psh, n->nredir.redirect);
+	INTOFF;
+	jp = makejob(psh, n, 1);
+#ifdef KASH_USE_FORKSHELL2
+	{
+		struct evalsubshellchild args;
+		args.flags = flags;
+		args.backgnd = backgnd;
+		forkshell2(psh, jp, n, backgnd ? FORK_BG : FORK_FG,
+		           evalsubshell_child, n, &args, sizeof(args), NULL);
+	}
+#else
+	if (forkshell(psh, jp, n, backgnd ? FORK_BG : FORK_FG) == 0) {
+		INTON;
+		if (backgnd)
+			flags &=~ EV_TESTED;
+		redirect(psh, n->nredir.redirect, 0);
+		/* never returns */
+		evaltree(psh, n->nredir.n, flags | EV_EXIT);
+	}
+#endif
+	if (! backgnd)
+		psh->exitstatus = waitforjob(psh, jp);
+	expredircleanup(psh, expfnamedepth);
+	INTON;
+}
+
+
+
+/*
+ * Compute the names of the files in a redirection list.
+ */
+
+STATIC unsigned
+expredir(shinstance *psh, union node *n)
+{
+	union node *redir;
+	redirexpfnames *expfnames;
+	unsigned i;
+
+	/* We typically end up here w/o redirections. */
+	if (!n)
+	    return !(expfnames = psh->expfnames) ? 0 : expfnames->depth + 1;
+
+	/* Prepare a table for the expanded names. */
+	i = 0;
+	for (redir = n; redir ; redir = redir->nfile.next)
+	    i++;
+	expfnames = stalloc(psh, offsetof(redirexpfnames, names) +  sizeof(expfnames->names[0]) * i);
+	expfnames->count = i;
+	TRACE2((psh, "expredir: %p: count=%u\n", expfnames, i));
+
+	/* Do the expansion. */
+	for (redir = n, i = 0 ; redir ; redir = redir->nfile.next, i++) {
+		struct arglist fn;
+		fn.lastp = &fn.list;
+		switch (redir->type) {
+		case NFROMTO:
+		case NFROM:
+		case NTO:
+		case NCLOBBER:
+		case NAPPEND:
+			expandarg(psh, redir->nfile.fname, &fn, EXP_TILDE | EXP_REDIR);
+			expfnames->names[i] = fn.list->text;
+			break;
+		case NFROMFD:
+		case NTOFD:
+			if (redir->ndup.vname) {
+				expandarg(psh, redir->ndup.vname, &fn, EXP_FULL | EXP_TILDE);
+				fixredir(psh, redir, fn.list->text, 1);
+			}
+			expfnames->names[i] = NULL;
+			break;
+		default:
+			kHlpAssert(redir->type == NHERE || redir->type == NXHERE);
+			expfnames->names[i] = NULL;
+			break;
+		}
+	}
+	kHlpAssert(i == expfnames->count);
+
+	/* Do the linking at the end, as nesting happens when we expand backtick arguments. */
+	expfnames->prev = psh->expfnames;
+	psh->expfnames = expfnames;
+	return expfnames->depth = psh->expfnames ? psh->expfnames->depth + 1 : 1;
+}
+
+STATIC void
+expredircleanup(shinstance *psh, unsigned depth)
+{
+	redirexpfnames *expfnames = psh->expfnames;
+	kHlpAssert(expfnames == NULL ? depth == 0 : expfnames->depth == depth || expfnames->depth + 1 == depth);
+	while (expfnames && expfnames->depth >= depth)
+	    expfnames = psh->expfnames = expfnames->prev;
+}
+
+
+#ifdef KASH_USE_FORKSHELL2
+/*
+ * Child of evalpipe.
+ */
+struct evalpipechild
+{
+	int prevfd;
+	int pip[2];
+};
+
+static int evalpipe_child(shinstance *psh, union node *n, void *argp)
+{
+	struct evalpipechild args = *(struct evalpipechild *)argp;
+
+	if (args.prevfd > 0) {
+		movefd(psh, args.prevfd, 0);
+	}
+	if (args.pip[1] >= 0) {
+		shfile_close(&psh->fdtab, args.pip[0]);
+		if (args.pip[1] != 1) {
+			movefd(psh, args.pip[1], 1);
+		}
+	}
+	evaltree(psh, n, EV_EXIT);
+	/** @todo make it return thru here. */
+	return 0;
+}
+#endif /* KASH_USE_FORKSHELL2 */
+
+/*
+ * Evaluate a pipeline.  All the processes in the pipeline are children
+ * of the process creating the pipeline.  (This differs from some versions
+ * of the shell, which make the last process in a pipeline the parent
+ * of all the rest.)
+ */
+
+STATIC void
+evalpipe(shinstance *psh, union node *n)
+{
+	struct job *jp;
+	struct nodelist *lp;
+	int pipelen;
+	int prevfd;
+	int pip[2];
+
+	TRACE((psh, "evalpipe(0x%lx) called\n", (long)n));
+	pipelen = 0;
+	for (lp = n->npipe.cmdlist ; lp ; lp = lp->next)
+		pipelen++;
+	INTOFF;
+	jp = makejob(psh, n, pipelen);
+	prevfd = -1;
+	for (lp = n->npipe.cmdlist ; lp ; lp = lp->next) {
+		prehash(psh, lp->n);
+		pip[1] = -1;
+		if (lp->next) {
+			if (sh_pipe(psh, pip) < 0) {
+				shfile_close(&psh->fdtab, prevfd);
+				error(psh, "Pipe call failed");
+			}
+		}
+#ifdef KASH_USE_FORKSHELL2
+		{
+			struct evalpipechild args;
+			args.prevfd = prevfd;
+			args.pip[0] = pip[0];
+			args.pip[1] = pip[1];
+			forkshell2(psh, jp, lp->n, n->npipe.backgnd ? FORK_BG : FORK_FG,
+			           evalpipe_child, lp->n, &args, sizeof(args), NULL);
+		}
+#else
+		if (forkshell(psh, jp, lp->n, n->npipe.backgnd ? FORK_BG : FORK_FG) == 0) {
+			INTON;
+			if (prevfd > 0) {
+				movefd(psh, prevfd, 0);
+			}
+			if (pip[1] >= 0) {
+				shfile_close(&psh->fdtab, pip[0]);
+				if (pip[1] != 1) {
+					movefd(psh, pip[1], 1);
+				}
+			}
+			evaltree(psh, lp->n, EV_EXIT);
+		}
+#endif
+		if (prevfd >= 0)
+			shfile_close(&psh->fdtab, prevfd);
+		prevfd = pip[0];
+		shfile_close(&psh->fdtab, pip[1]);
+	}
+	if (n->npipe.backgnd == 0) {
+		psh->exitstatus = waitforjob(psh, jp);
+		TRACE((psh, "evalpipe:  job done exit status %d\n", psh->exitstatus));
+	}
+	INTON;
+}
+
+#ifdef KASH_USE_FORKSHELL2
+/*
+ * evalbackcmd child.
+ */
+struct evalbackcmdchild
+{
+	int pip[2];
+};
+
+static int evalbackcmd_child(shinstance *psh, union node *n, void *argp)
+{
+	struct evalbackcmdchild args = *(struct evalbackcmdchild *)argp;
+
+	FORCEINTON;
+	shfile_close(&psh->fdtab, args.pip[0]);
+	if (args.pip[1] != 1) {
+		movefd(psh, args.pip[1], 1);
+	}
+	eflag(psh) = 0;
+	evaltree(psh, n, EV_EXIT);
+	/* NOTREACHED */ /** @todo make it return here to simplify thread handling (no need for setjmp). */
+	return 0;
+}
+#endif /* KASH_USE_FORKSHELL2 */
+
+/*
+ * Execute a command inside back quotes.  If it's a builtin command, we
+ * want to save its output in a block obtained from malloc.  Otherwise
+ * we fork off a subprocess and get the output of the command via a pipe.
+ * Should be called with interrupts off.
+ */
+
+void
+evalbackcmd(shinstance *psh, union node *n, struct backcmd *result)
+{
+	int pip[2];
+	struct job *jp;
+	struct stackmark smark;		/* unnecessary */
+
+	setstackmark(psh, &smark);
+	result->fd = -1;
+	result->buf = NULL;
+	result->nleft = 0;
+	result->jp = NULL;
+	if (n == NULL) {
+		goto out;
+	}
+#ifdef notyet
+	/*
+	 * For now we disable executing builtins in the same
+	 * context as the shell, because we are not keeping
+	 * enough state to recover from changes that are
+	 * supposed only to affect subshells. eg. echo "`cd /`"
+	 */
+	if (n->type == NCMD) {
+		psh->exitstatus = opsh->exitstatus;
+		evalcommand(psh, n, EV_BACKCMD, result);
+	} else
+#endif
+	{
+		INTOFF;
+		if (sh_pipe(psh, pip) < 0)
+			error(psh, "Pipe call failed");
+		jp = makejob(psh, n, 1);
+#ifdef KASH_USE_FORKSHELL2
+		{
+			struct evalbackcmdchild args;
+			args.pip[0] = pip[0];
+			args.pip[1] = pip[1];
+			forkshell2(psh, jp, n, FORK_NOJOB,
+			           evalbackcmd_child, n, &args, sizeof(args), NULL);
+		}
+#else
+		if (forkshell(psh, jp, n, FORK_NOJOB) == 0) {
+			FORCEINTON;
+			shfile_close(&psh->fdtab, pip[0]);
+			if (pip[1] != 1) {
+				movefd(psh, pip[1], 1);
+			}
+			eflag(psh) = 0;
+			evaltree(psh, n, EV_EXIT);
+			/* NOTREACHED */
+		}
+#endif
+		shfile_close(&psh->fdtab, pip[1]);
+		result->fd = pip[0];
+		result->jp = jp;
+		INTON;
+	}
+out:
+	popstackmark(psh, &smark);
+	TRACE((psh, "evalbackcmd done: fd=%d buf=0x%x nleft=%d jp=0x%x\n",
+		result->fd, result->buf, result->nleft, result->jp));
+}
+
+static const char *
+syspath(shinstance *psh)
+{
+#ifdef CTL_USER
+	static char *sys_path = NULL;
+	static int mib[] = {CTL_USER, USER_CS_PATH};
+#endif
+#ifdef PC_PATH_SEP
+	static char def_path[] = "PATH=/usr/bin;/bin;/usr/sbin;/sbin";
+#else
+	static char def_path[] = "PATH=/usr/bin:/bin:/usr/sbin:/sbin";
+#endif
+#ifdef CTL_USER
+	size_t len;
+
+	if (sys_path == NULL) {
+		if (sysctl(mib, 2, 0, &len, 0, 0) != -1 &&
+		    (sys_path = ckmalloc(psh, len + 5)) != NULL &&
+		    sysctl(mib, 2, sys_path + 5, &len, 0, 0) != -1) {
+			memcpy(sys_path, "PATH=", 5);
+		} else {
+			ckfree(psh, sys_path);
+			/* something to keep things happy */
+			sys_path = def_path;
+		}
+	}
+	return sys_path;
+#else
+	return def_path;
+#endif
+}
+
+static int
+parse_command_args(shinstance *psh, int argc, char **argv, int *use_syspath)
+{
+	int sv_argc = argc;
+	char *cp, c;
+
+	*use_syspath = 0;
+
+	for (;;) {
+		argv++;
+		if (--argc == 0)
+			break;
+		cp = *argv;
+		if (*cp++ != '-')
+			break;
+		if (*cp == '-' && cp[1] == 0) {
+			argv++;
+			argc--;
+			break;
+		}
+		while ((c = *cp++)) {
+			switch (c) {
+			case 'p':
+				*use_syspath = 1;
+				break;
+			default:
+				/* run 'typecmd' for other options */
+				return 0;
+			}
+		}
+	}
+	return sv_argc - argc;
+}
+
+
+/*
+ * The split up evalcommand code:
+ *      evalcommand_out, evalcommand_parent, evalcommand_doit, evalcommand_child
+ */
+/*int vforked = 0; - obsolete */
+
+/* Both child and parent exits thru here. */
+STATIC void
+evalcommand_out(shinstance *psh, int flags, char *lastarg, unsigned expfnamedepth, struct stackmark *smarkp)
+{
+	if (lastarg)
+		/* dsl: I think this is intended to be used to support
+		 * '_' in 'vi' command mode during line editing...
+		 * However I implemented that within libedit itself.
+		 */
+		setvar(psh, "_", lastarg, 0);
+	expredircleanup(psh, expfnamedepth);
+	popstackmark(psh, smarkp);
+
+	if (eflag(psh) && psh->exitstatus && !(flags & EV_TESTED))
+		exitshell(psh, psh->exitstatus);
+}
+
+
+/* Called if we forkshell(). */
+STATIC void
+evalcommand_parent(shinstance *psh, int flags, char *lastarg, unsigned expfnamedepth, struct stackmark *smarkp,
+		   int mode, struct job *jp, int pip[2], struct backcmd *backcmd)
+{
+	if (mode == FORK_FG) {	/* argument to fork */
+		psh->exitstatus = waitforjob(psh, jp);
+	} else if (mode == FORK_NOJOB) {
+		backcmd->fd = pip[0];
+		shfile_close(&psh->fdtab, pip[1]);
+		backcmd->jp = jp;
+	}
+	FORCEINTON;
+
+	evalcommand_out(psh, flags, lastarg, expfnamedepth, smarkp);
+}
+
+struct evalcommanddoit
+{
+	struct stackmark smark;
+	unsigned expfnamedepth;
+
+	struct backcmd *backcmd;
+	int flags;
+	int argc;
+	char **argv;
+	char *lastarg;
+	struct arglist varlist;
+	const char *path;
+	struct cmdentry cmdentry;
+
+	/* for child stuff only: */
+	int pip[2];
+};
+
+STATIC void
+evalcommand_doit(shinstance *psh, union node *cmd, struct evalcommanddoit *args)
+{
+	struct jmploc jmploc;
+	struct jmploc *volatile savehandler;
+	struct localvar *volatile savelocalvars;
+
+	/* This is the child process if a fork occurred. */
+	/* Execute the command. */
+	switch (args->cmdentry.cmdtype) {
+		case CMDFUNCTION: {
+			volatile struct shparam saveparam;
+#ifdef DEBUG
+			trputs(psh, "Shell function:  ");  trargs(psh, args->argv);
+#endif
+			redirect(psh, cmd->ncmd.redirect, REDIR_PUSH);
+			saveparam = psh->shellparam;
+			psh->shellparam.malloc = 0;
+			psh->shellparam.reset = 1;
+			psh->shellparam.nparam = args->argc - 1;
+			psh->shellparam.p = args->argv + 1;
+			psh->shellparam.optnext = NULL;
+			INTOFF;
+			savelocalvars = psh->localvars;
+			psh->localvars = NULL;
+			INTON;
+			if (setjmp(jmploc.loc)) {
+				if (psh->exception == EXSHELLPROC) {
+					freeparam(psh, (volatile struct shparam *)
+						&saveparam);
+				} else {
+					freeparam(psh, &psh->shellparam);
+					psh->shellparam = saveparam;
+				}
+				poplocalvars(psh);
+				psh->localvars = savelocalvars;
+				psh->handler = savehandler;
+				longjmp(psh->handler->loc, 1);
+			}
+			savehandler = psh->handler;
+			psh->handler = &jmploc;
+			listmklocal(psh, args->varlist.list, 0);
+			/* stop shell blowing its stack */
+			if (++psh->funcnest > 1000)
+				error(psh, "too many nested function calls");
+			evaltree(psh, args->cmdentry.u.func, args->flags & EV_TESTED);
+			psh->funcnest--;
+			INTOFF;
+			poplocalvars(psh);
+			psh->localvars = savelocalvars;
+			freeparam(psh, &psh->shellparam);
+			psh->shellparam = saveparam;
+			psh->handler = savehandler;
+			popredir(psh);
+			INTON;
+			if (psh->evalskip == SKIPFUNC) {
+				psh->evalskip = 0;
+				psh->skipcount = 0;
+			}
+			if (args->flags & EV_EXIT)
+				exitshell(psh, psh->exitstatus);
+			break;
+		}
+
+		case CMDBUILTIN:
+		case CMDSPLBLTIN: {
+			volatile int temp_path = 0;
+			char *volatile savecmdname;
+			int volatile savecmdnamemalloc;
+			volatile int e;
+			int mode;
+#ifdef DEBUG
+			trputs(psh, "builtin command:  ");  trargs(psh, args->argv);
+#endif
+			mode = (args->cmdentry.u.bltin == execcmd) ? 0 : REDIR_PUSH;
+			if (args->flags == EV_BACKCMD) {
+				psh->memout.nleft = 0;
+				psh->memout.nextc = psh->memout.buf;
+				psh->memout.bufsize = 64;
+				mode |= REDIR_BACKQ;
+			}
+			e = -1;
+			savehandler = psh->handler;
+			savecmdname = psh->commandname;
+			savecmdnamemalloc = psh->commandnamemalloc;
+			psh->handler = &jmploc;
+			if (!setjmp(jmploc.loc)) {
+				/* We need to ensure the command hash table isn't
+				 * corruped by temporary PATH assignments.
+				 * However we must ensure the 'local' command works!
+				 */
+				if (args->path != pathval(psh) && (args->cmdentry.u.bltin == hashcmd ||
+					args->cmdentry.u.bltin == typecmd)) {
+					savelocalvars = psh->localvars;
+					psh->localvars = 0;
+					mklocal(psh, args->path - 5 /* PATH= */, 0);
+					temp_path = 1;
+				} else
+					temp_path = 0;
+				redirect(psh, cmd->ncmd.redirect, mode);
+
+				/* exec is a special builtin, but needs this list... */
+				psh->cmdenviron = args->varlist.list;
+				/* we must check 'readonly' flag for all builtins */
+				listsetvar(psh, args->varlist.list,
+					args->cmdentry.cmdtype == CMDSPLBLTIN ? 0 : VNOSET);
+				psh->commandnamemalloc = 0;
+				psh->commandname = args->argv[0];
+				/* initialize nextopt */
+				psh->argptr = args->argv + 1;
+				psh->optptr = NULL;
+				/* and getopt */
+#if 0 /** @todo fix getop usage! */
+#if defined(__FreeBSD__) || defined(__EMX__) || defined(__APPLE__)
+				optreset = 1;
+				optind = 1;
+#else
+				optind = 0; /* init */
+#endif
+#endif
+
+				psh->exitstatus = args->cmdentry.u.bltin(psh, args->argc, args->argv);
+			} else {
+				e = psh->exception;
+				psh->exitstatus = e == EXINT ? SIGINT + 128 :
+						e == EXEXEC ? psh->exerrno : 2;
+			}
+			psh->handler = savehandler;
+			output_flushall(psh);
+			psh->out1 = &psh->output;
+			psh->out2 = &psh->errout;
+			freestdout(psh);
+			if (temp_path) {
+				poplocalvars(psh);
+				psh->localvars = savelocalvars;
+			}
+			psh->cmdenviron = NULL;
+			if (e != EXSHELLPROC) {
+				psh->commandname = savecmdname;
+				psh->commandnamemalloc = savecmdnamemalloc;
+				if (args->flags & EV_EXIT)
+					exitshell(psh, psh->exitstatus);
+			}
+			else if (savecmdnamemalloc)
+				sh_free(psh, savecmdname);
+			if (e != -1) {
+				if ((e != EXERROR && e != EXEXEC)
+					|| args->cmdentry.cmdtype == CMDSPLBLTIN)
+					exraise(psh, e);
+				FORCEINTON;
+			}
+			if (args->cmdentry.u.bltin != execcmd)
+				popredir(psh);
+			if (args->flags == EV_BACKCMD) {
+				args->backcmd->buf = psh->memout.buf;
+				args->backcmd->nleft = (int)(psh->memout.nextc - psh->memout.buf);
+				psh->memout.buf = NULL;
+			}
+			break;
+		}
+
+		default: {
+			struct strlist *sp;
+			char **envp;
+#ifdef DEBUG
+			trputs(psh, "normal command:  ");  trargs(psh, args->argv);
+#endif
+			clearredir(psh);
+			redirect(psh, cmd->ncmd.redirect, 0);
+			for (sp = args->varlist.list ; sp ; sp = sp->next)
+                                setvareq(psh, sp->text, VEXPORT|VSTACK);
+			envp = environment(psh);
+			shellexec(psh, args->argv, envp, args->path,
+			          args->cmdentry.u.n.index, args->cmdentry.u.n.suffix);
+			break;
+		}
+	}
+
+	evalcommand_out(psh, args->flags, args->lastarg, args->expfnamedepth, &args->smark);
+}
+
+/* child callback. */
+static int evalcommand_child(shinstance *psh, union node *cmd, void *argp)
+{
+	struct evalcommanddoit *args = (struct evalcommanddoit *)argp;
+
+	if (args->flags & EV_BACKCMD) {
+		FORCEINTON;
+		shfile_close(&psh->fdtab, args->pip[0]);
+		if (args->pip[1] != 1) {
+			movefd(psh, args->pip[1], 1);
+		}
+	}
+	args->flags |= EV_EXIT;
+
+	evalcommand_doit(psh, cmd, args);
+	/* not reached */  /** @todo make it return here */
+	return 0;
+}
+
+#ifdef KASH_USE_FORKSHELL2
+/* Copies data in the argument structure from parent to child. */
+static void evalcommand_setup_child(shinstance *pshchild, shinstance *pshparent, void *argp)
+{
+	struct evalcommanddoit *args = (struct evalcommanddoit *)argp;
+	char **argv;
+	char **srcargv;
+	struct strlist *sp;
+	int argc, i;
+
+	setstackmark(pshchild, &args->smark);
+
+	/* copy arguments. */
+	srcargv = args->argv;
+	argc = args->argc;
+	args->argv = argv = stalloc(pshchild, sizeof(char *) * (argc + 1));
+	for (i = 0; i < argc; i++)
+		argv[i] = stsavestr(pshchild, srcargv[i]);
+	argv[argc] = NULL;
+	if (args->lastarg)
+		args->lastarg = argv[argc - 1];
+
+	/* copy variable list, checking for the 'path'. */
+	sp = args->varlist.list;
+	args->varlist.list = NULL;
+	args->varlist.lastp = &args->varlist.list;
+	for (; sp; sp = sp->next) {
+		struct strlist *snew = (struct strlist *)stalloc(pshchild, sizeof(*snew));
+		char *text;
+		snew->next = NULL;
+		snew->text = text = stsavestr(pshchild, sp->text);
+
+		if (&text[5] == args->path)
+			args->path = &text[sizeof("PATH=") - 1];
+
+		*args->varlist.lastp = snew;
+		args->varlist.lastp = &snew->next;
+	}
+
+	if (args->path == pathval(pshparent))
+		args->path = pathval(pshchild);
+
+	/* back tick command should be ignored in this codepath
+	   (flags != EV_BACKCMD as EV_EXIT is ORed in). */
+
+	/* If cmdentry references an internal function, we must duplicates (reference) it's nodes. */
+	if (args->cmdentry.cmdtype == CMDFUNCTION)
+		args->cmdentry.u.func = copyparsetree(pshchild, args->cmdentry.u.func); /** @todo isn't this duplicated already? */
+}
+#endif /* KASH_USE_FORKSHELL2 */
+
+/*
+ * Execute a simple command.
+ */
+
+STATIC void
+evalcommand(shinstance *psh, union node *cmd, int flags, struct backcmd *backcmd)
+{
+	struct evalcommanddoit args;
+	char **argv;
+	int argc;
+
+	union node *argp;
+	int numvars;
+	struct arglist arglist;
+	struct strlist *sp;
+	const char *path = pathval(psh);
+
+	/* First expand the arguments. */
+	TRACE((psh, "evalcommand(0x%lx, %d) called\n", (long)cmd, flags));
+	setstackmark(psh, &args.smark);
+	psh->back_exitstatus = 0;
+
+	arglist.lastp = &arglist.list;
+	/* Expand arguments, ignoring the initial 'name=value' ones */
+	for (argp = cmd->ncmd.args, numvars = 0 ; argp ; argp = argp->narg.next, numvars++) {
+	    char *p = argp->narg.text;
+	    char ch = *p;
+	    if (is_name(ch)) {
+		    do	ch = *++p;
+		    while (is_in_name(ch));
+		    if (ch == '=')
+			    continue;
+	    }
+	    break;
+	}
+	for (/*continue on argp from above. */ ; argp ; argp = argp->narg.next)
+		expandarg(psh, argp, &arglist, EXP_FULL | EXP_TILDE);
+	*arglist.lastp = NULL;
+
+	args.expfnamedepth = expredir(psh, cmd->ncmd.redirect);
+
+	/* Now do the initial 'name=value' ones we skipped above */
+	args.varlist.lastp = &args.varlist.list;
+	for (argp = cmd->ncmd.args ; numvars > 0 && argp ; argp = argp->narg.next, numvars--)
+		expandarg(psh, argp, &args.varlist, EXP_VARTILDE);
+	*args.varlist.lastp = NULL;
+
+	argc = 0;
+	for (sp = arglist.list ; sp ; sp = sp->next)
+		argc++;
+	args.argc = argc;
+	args.argv = argv = stalloc(psh, sizeof (char *) * (argc + 1));
+
+	for (sp = arglist.list ; sp ; sp = sp->next) {
+		TRACE((psh, "evalcommand arg: %s\n", sp->text));
+		*argv++ = sp->text;
+	}
+	*argv = NULL;
+	args.lastarg = NULL;
+	if (iflag(psh) && psh->funcnest == 0 && argc > 0)
+		args.lastarg = argv[-1];
+	argv -= argc;
+
+	/* Print the command if xflag is set. */
+	if (xflag(psh)) {
+		char sep = 0;
+		out2str(psh, ps4val(psh));
+		for (sp = args.varlist.list ; sp ; sp = sp->next) {
+			if (sep != 0)
+				outc(sep, &psh->errout);
+			out2str(psh, sp->text);
+			sep = ' ';
+		}
+		for (sp = arglist.list ; sp ; sp = sp->next) {
+			if (sep != 0)
+				outc(sep, &psh->errout);
+			out2str(psh, sp->text);
+			sep = ' ';
+		}
+		outc('\n', &psh->errout);
+		flushout(&psh->errout);
+	}
+
+	/* Now locate the command. */
+	if (argc == 0) {
+		args.cmdentry.cmdtype = CMDSPLBLTIN;
+		args.cmdentry.u.bltin = bltincmd;
+	} else {
+		static const char PATH[] = "PATH=";
+		int cmd_flags = DO_ERR;
+
+		/*
+		 * Modify the command lookup path, if a PATH= assignment
+		 * is present
+		 */
+		for (sp = args.varlist.list; sp; sp = sp->next)
+			if (strncmp(sp->text, PATH, sizeof(PATH) - 1) == 0)
+				path = sp->text + sizeof(PATH) - 1;
+
+		do {
+			int argsused, use_syspath;
+			find_command(psh, argv[0], &args.cmdentry, cmd_flags, path);
+			if (args.cmdentry.cmdtype == CMDUNKNOWN) {
+				psh->exitstatus = 127;
+				flushout(&psh->errout);
+				evalcommand_out(psh, flags, args.lastarg, args.expfnamedepth, &args.smark);
+				return;
+			}
+
+			/* implement the 'command' builtin here */
+			if (args.cmdentry.cmdtype != CMDBUILTIN ||
+			    args.cmdentry.u.bltin != bltincmd)
+				break;
+			cmd_flags |= DO_NOFUNC;
+			argsused = parse_command_args(psh, argc, argv, &use_syspath);
+			if (argsused == 0) {
+				/* use 'type' builting to display info */
+				args.cmdentry.u.bltin = typecmd;
+				break;
+			}
+			argc -= argsused;
+			argv += argsused;
+			if (use_syspath)
+				path = syspath(psh) + 5;
+		} while (argc != 0);
+		if (args.cmdentry.cmdtype == CMDSPLBLTIN && cmd_flags & DO_NOFUNC)
+			/* posix mandates that 'command <splbltin>' act as if
+			   <splbltin> was a normal builtin */
+			args.cmdentry.cmdtype = CMDBUILTIN;
+	}
+
+	/* Fork off a child process if necessary. */
+	if (cmd->ncmd.backgnd
+	 || (args.cmdentry.cmdtype == CMDNORMAL && (flags & EV_EXIT) == 0)
+	 || (  (flags & EV_BACKCMD) != 0
+	    && (  (args.cmdentry.cmdtype != CMDBUILTIN && args.cmdentry.cmdtype != CMDSPLBLTIN)
+		   || args.cmdentry.u.bltin == dotcmd
+		   || args.cmdentry.u.bltin == evalcmd))) {
+		struct job *jp;
+		int mode;
+
+		INTOFF;
+		jp = makejob(psh, cmd, 1);
+		mode = cmd->ncmd.backgnd;
+		args.pip[0] = -1;
+		args.pip[1] = -1;
+		if (flags & EV_BACKCMD) {
+			mode = FORK_NOJOB;
+			if (sh_pipe(psh, args.pip) < 0)
+				error(psh, "Pipe call failed");
+		}
+
+		args.backcmd = backcmd;
+		args.flags = flags;
+		args.path = path;
+#ifdef KASH_USE_FORKSHELL2
+		forkshell2(psh, jp, cmd, mode, evalcommand_child, cmd,
+		           &args, sizeof(args), evalcommand_setup_child);
+		evalcommand_parent(psh, flags, args.lastarg, args.expfnamedepth,
+				   &args.smark, mode, jp, args.pip, backcmd);
+#else
+		if (forkshell(psh, jp, cmd, mode) != 0) {
+			evalcommand_parent(psh, flags, args.lastarg, args.expfnamedepth,
+			                   &args.smark, mode, jp, args.pip, backcmd);
+			return;	/* at end of routine */
+		}
+		evalcommand_child(psh, cmd, &args);
+#endif
+	} else {
+		args.backcmd = backcmd;
+		args.flags = flags;
+		args.path = path;
+		evalcommand_doit(psh, cmd, &args);
+	}
+}
+
+
+/*
+ * Search for a command.  This is called before we fork so that the
+ * location of the command will be available in the parent as well as
+ * the child.  The check for "goodname" is an overly conservative
+ * check that the name will not be subject to expansion.
+ */
+
+STATIC void
+prehash(shinstance *psh, union node *n)
+{
+	struct cmdentry entry;
+
+	if (n->type == NCMD && n->ncmd.args)
+		if (goodname(n->ncmd.args->narg.text))
+			find_command(psh, n->ncmd.args->narg.text, &entry, 0,
+				         pathval(psh));
+}
+
+
+
+/*
+ * Builtin commands.  Builtin commands whose functions are closely
+ * tied to evaluation are implemented here.
+ */
+
+/*
+ * No command given.
+ */
+
+int
+bltincmd(shinstance *psh, int argc, char **argv)
+{
+	/*
+	 * Preserve psh->exitstatus of a previous possible redirection
+	 * as POSIX mandates
+	 */
+	return psh->back_exitstatus;
+}
+
+
+/*
+ * Handle break and continue commands.  Break, continue, and return are
+ * all handled by setting the psh->evalskip flag.  The evaluation routines
+ * above all check this flag, and if it is set they start skipping
+ * commands rather than executing them.  The variable skipcount is
+ * the number of loops to break/continue, or the number of function
+ * levels to return.  (The latter is always 1.)  It should probably
+ * be an error to break out of more loops than exist, but it isn't
+ * in the standard shell so we don't make it one here.
+ */
+
+int
+breakcmd(shinstance *psh, int argc, char **argv)
+{
+	int n = argc > 1 ? number(psh, argv[1]) : 1;
+
+	if (n > psh->loopnest)
+		n = psh->loopnest;
+	if (n > 0) {
+		psh->evalskip = (**argv == 'c')? SKIPCONT : SKIPBREAK;
+		psh->skipcount = n;
+	}
+	return 0;
+}
+
+
+/*
+ * The return command.
+ */
+
+int
+returncmd(shinstance *psh, int argc, char **argv)
+{
+#if 0
+	int ret = argc > 1 ? number(psh, argv[1]) : psh->exitstatus;
+#else
+	int ret;
+	if (argc > 1)  {
+		/* make return -1 and VSC lite work ... */
+    		if (argv[1][0] != '-' || !is_number(&argv[1][1]))
+			ret = number(psh, argv[1]);
+		else
+			ret = -number(psh, &argv[1][1]) & 255; /* take the bash approach */
+	} else {
+    		ret = psh->exitstatus;
+	}
+#endif
+
+	if (psh->funcnest) {
+		psh->evalskip = SKIPFUNC;
+		psh->skipcount = 1;
+		return ret;
+	}
+	else {
+		/* Do what ksh does; skip the rest of the file */
+		psh->evalskip = SKIPFILE;
+		psh->skipcount = 1;
+		return ret;
+	}
+}
+
+
+int
+falsecmd(shinstance *psh, int argc, char **argv)
+{
+	return 1;
+}
+
+
+int
+truecmd(shinstance *psh, int argc, char **argv)
+{
+	return 0;
+}
+
+
+int
+execcmd(shinstance *psh, int argc, char **argv)
+{
+	if (argc > 1) {
+		struct strlist *sp;
+
+		iflag(psh) = 0;		/* exit on error */
+		mflag(psh) = 0;
+		optschanged(psh);
+		for (sp = psh->cmdenviron; sp; sp = sp->next)
+			setvareq(psh, sp->text, VEXPORT|VSTACK);
+		shellexec(psh, argv + 1, environment(psh), pathval(psh), 0, -1);
+	}
+	return 0;
+}
+
+static int
+conv_time(clock_t ticks, char *seconds, size_t l)
+{
+	static clock_t tpm = 0;
+	clock_t mins;
+	size_t i;
+
+	if (!tpm)
+		tpm = /*sysconf(_SC_CLK_TCK)*/sh_sysconf_clk_tck() * 60;
+
+	mins = ticks / tpm;
+#ifdef _MSC_VER
+	{
+		char tmp[64];
+		sprintf(tmp, "%.4f", (ticks - mins * tpm) * 60.0 / tpm);
+		strlcpy(seconds, tmp, l);
+	}
+#else
+	snprintf(seconds, l, "%.4f", (ticks - mins * tpm) * 60.0 / tpm );
+#endif
+
+	if (seconds[0] == '6' && seconds[1] == '0') {
+		/* 59.99995 got rounded up... */
+		mins++;
+		strlcpy(seconds, "0.0", l);
+		return mins;
+	}
+
+	/* suppress trailing zeros */
+	i = strlen(seconds) - 1;
+	for (; seconds[i] == '0' && seconds[i - 1] != '.'; i--)
+		seconds[i] = 0;
+	return mins;
+}
+
+int
+timescmd(shinstance *psh, int argc, char **argv)
+{
+	shtms tms;
+	int u, s, cu, cs;
+	char us[8], ss[8], cus[8], css[8];
+
+	nextopt(psh, "");
+
+	sh_times(psh, &tms);
+
+	u = conv_time(tms.tms_utime, us, sizeof(us));
+	s = conv_time(tms.tms_stime, ss, sizeof(ss));
+	cu = conv_time(tms.tms_cutime, cus, sizeof(cus));
+	cs = conv_time(tms.tms_cstime, css, sizeof(css));
+
+	outfmt(psh->out1, "%dm%ss %dm%ss\n%dm%ss %dm%ss\n",
+		u, us, s, ss, cu, cus, cs, css);
+
+	return 0;
+}