Slackware 14.2slackware-14.2

Thu Jun 30 20:26:57 UTC 2016
Slackware 14.2 x86_64 stable is released!

The long development cycle (the Linux community has lately been living in
"interesting times", as they say) is finally behind us, and we're proud to
announce the release of Slackware 14.2.  The new release brings many updates
and modern tools, has switched from udev to eudev (no systemd), and adds
well over a hundred new packages to the system.  Thanks to the team, the
upstream developers, the dedicated Slackware community, and everyone else
who pitched in to help make this release a reality.

The ISOs are off to be replicated, a 6 CD-ROM 32-bit set and a dual-sided
32-bit/64-bit x86/x86_64 DVD.  Please consider supporting the Slackware
project by picking up a copy from store.slackware.com.  We're taking
pre-orders now, and offer a discount if you sign up for a subscription.

Have fun!  :-)

45 files changed, 1538 insertions, 27 deletions

diff --git a/source/ap/ksh93/patches/ksh-20070328-builtins.patch b/source/ap/ksh93/patches/ksh-20070328-builtins.patch
index 5c6b21c2..061bf9aa 100644
--- a/source/ap/ksh93/patches/ksh-20070328-builtins.patch
+++ b/source/ap/ksh93/patches/ksh-20070328-builtins.patch
@@ -1,32 +1,11 @@
-diff -up ksh-20120620/src/cmd/ksh93/data/builtins.c.builtins ksh-20120620/src/cmd/ksh93/data/builtins.c
---- ksh-20120620/src/cmd/ksh93/data/builtins.c.builtins	2012-06-19 10:02:12.000000000 +0200
-+++ ksh-20120620/src/cmd/ksh93/data/builtins.c	2012-06-22 12:35:05.587717588 +0200
-@@ -131,20 +131,28 @@ const struct shtable3 shtab_builtins[] =
- #undef	mktemp		/* undo possible map-libc mktemp => _ast_mktemp */
- #include SHOPT_CMDLIB_HDR
- #else
-+#if 1
- 	CMDLIST(basename)
- 	CMDLIST(chmod)
+diff -up ksh-20080202/src/cmd/ksh93/data/builtins.c.builtins ksh-20080202/src/cmd/ksh93/data/builtins.c
+--- ksh-20080202/src/cmd/ksh93/data/builtins.c.builtins	2008-10-01 09:24:46.000000000 +0200
++++ ksh-20080202/src/cmd/ksh93/data/builtins.c	2008-10-01 09:24:58.000000000 +0200
+@@ -129,7 +129,6 @@ const struct shtable3 shtab_builtins[] =
  	CMDLIST(dirname)
  	CMDLIST(getconf)
  	CMDLIST(head)
-+#if 0
-+does not work when ACLs are used
- 	CMDLIST(mkdir)
-+#endif
+-	CMDLIST(mkdir)
  	CMDLIST(logname)
-+#if 1
-+//does not work in chrooted environments, because /dev/fd/? is missing
  	CMDLIST(cat)
-+#endif
  	CMDLIST(cmp)
- 	CMDLIST(cut)
- 	CMDLIST(uname)
- 	CMDLIST(wc)
- 	CMDLIST(sync)
- #endif
-+#endif
- #if SHOPT_REGRESS
- 	"__regress__",		NV_BLTIN|BLT_ENV,	bltin(__regress__),
- #endif
diff --git a/source/ap/ksh93/patches/ksh-20080202-manfix.patch b/source/ap/ksh93/patches/ksh-20080202-manfix.patch
new file mode 100644
index 00000000..8fe42257
--- /dev/null
+++ b/source/ap/ksh93/patches/ksh-20080202-manfix.patch
@@ -0,0 +1,47 @@
+diff -up ksh-20120801/src/cmd/ksh93/sh.1.manfix ksh-20120801/src/cmd/ksh93/sh.1
+--- ksh-20120801/src/cmd/ksh93/sh.1.manfix	2012-06-18 16:16:22.000000000 +0200
++++ ksh-20120801/src/cmd/ksh93/sh.1	2013-04-30 13:35:17.393909479 +0200
+@@ -39,7 +39,7 @@ ksh93, rksh93, pfksh93 \- KornShell, a s
+ .B ksh93
+ .\}
+ [
+-.B \(+-abcefhikmnoprstuvxBCDP
++.B \(+-abcefhiknoprstuvxBCDP
+ ] [
+ .B \-R
+ file ] [
+@@ -47,25 +47,6 @@ file ] [
+ option ] .\|.\|. [
+ .B \-
+ ] [ arg .\|.\|. ]
+-.br
+-.if \nZ=0 \{\
+-.B rsh
+-.\}
+-.if \nZ=1 \{\
+-.B rksh
+-.\}
+-.if \nZ=2 \{\
+-.B rksh93
+-.\}
+-[
+-.B \(+-abcefhikmnoprstuvxBCD
+-] [
+-.B \-R
+-file ] [
+-.B \(+-o
+-option ] .\|.\|.  [
+-.B \-
+-] [ arg .\|.\|. ]
+ .SH DESCRIPTION
+ .if \nZ=0 .I Sh\^
+ .if \nZ=1 .I Ksh\^
+@@ -7963,6 +7944,8 @@ option is used
+ to generate a cross reference database
+ that can be used by a separate utility
+ to find definitions and references for variables and commands.
++The filename argument specifies the generated database. A script file must be
++provided on the command line as well.
+ .PP
+ The remaining options and arguments are described under the
+ .B set
diff --git a/source/ap/ksh93/patches/ksh-20100202-pathvar.patch b/source/ap/ksh93/patches/ksh-20100202-pathvar.patch
new file mode 100644
index 00000000..50864996
--- /dev/null
+++ b/source/ap/ksh93/patches/ksh-20100202-pathvar.patch
@@ -0,0 +1,20 @@
+diff -up ksh-20100202/src/cmd/ksh93/sh.1.pathvar ksh-20100202/src/cmd/ksh93/sh.1
+--- ksh-20100202/src/cmd/ksh93/sh.1.pathvar	2011-04-26 16:42:08.000000000 +0200
++++ ksh-20100202/src/cmd/ksh93/sh.1	2011-04-27 09:09:00.315883280 +0200
+@@ -4025,13 +4025,9 @@ the directory containing the command.
+ Alternative directory names are separated by
+ a colon
+ .RB ( : ).
+-The default path is
+-.B /bin:/usr/bin:
+-(specifying
+-.BR /bin ,
+-.BR /usr/bin ,
+-and the current directory
+-in that order).
++The default path is equal to
++.BI getconf\ PATH
++output.
+ The current directory can be specified by
+ two or more adjacent colons, or by a colon
+ at the beginning or end of the path list.
diff --git a/source/ap/ksh93/patches/ksh-20100621-fdstatus.patch b/source/ap/ksh93/patches/ksh-20100621-fdstatus.patch
new file mode 100644
index 00000000..99abb553
--- /dev/null
+++ b/source/ap/ksh93/patches/ksh-20100621-fdstatus.patch
@@ -0,0 +1,54 @@
+diff -up ksh-20120801/src/cmd/ksh93/sh/io.c.fdstatus ksh-20120801/src/cmd/ksh93/sh/io.c
+--- ksh-20120801/src/cmd/ksh93/sh/io.c.fdstatus	2013-07-04 18:01:27.187516655 +0200
++++ ksh-20120801/src/cmd/ksh93/sh/io.c	2013-07-04 18:01:38.249607392 +0200
+@@ -1508,7 +1508,7 @@ int	sh_redirect(Shell_t *shp,struct iono
+ 					fn = fd;
+ 					if(fd<10)
+ 					{
+-						if((fn=fcntl(fd,F_DUPFD,10)) < 0)
++						if((fn=sh_fcntl(fd,F_DUPFD,10)) < 0)
+ 							goto fail;
+ 						if(fn>=shp->gd->lim.open_max && !sh_iovalidfd(shp,fn))
+ 							goto fail;
+diff -up ksh-20120801/src/cmd/ksh93/sh/subshell.c.fdstatus ksh-20120801/src/cmd/ksh93/sh/subshell.c
+--- ksh-20120801/src/cmd/ksh93/sh/subshell.c.fdstatus	2012-07-17 23:54:21.000000000 +0200
++++ ksh-20120801/src/cmd/ksh93/sh/subshell.c	2013-07-04 17:56:20.342000310 +0200
+@@ -122,7 +122,7 @@ void	sh_subtmpfile(Shell_t *shp)
+ 		register struct checkpt	*pp = (struct checkpt*)shp->jmplist;
+ 		register struct subshell *sp = subshell_data->pipe;
+ 		/* save file descriptor 1 if open */
+-		if((sp->tmpfd = fd = fcntl(1,F_DUPFD,10)) >= 0)
++		if((sp->tmpfd = fd = sh_fcntl(1,F_DUPFD,10)) >= 0)
+ 		{
+ 			fcntl(fd,F_SETFD,FD_CLOEXEC);
+ 			shp->fdstatus[fd] = shp->fdstatus[1]|IOCLEX;
+@@ -554,7 +554,7 @@ Sfio_t *sh_subshell(Shell_t *shp,Shnode_
+ 				sp->pwdfd = n;
+ 				if(n<10)
+ 				{
+-					sp->pwdfd =  fcntl(n,F_DUPFD,10);
++					sp->pwdfd = sh_fcntl(n,F_DUPFD,10);
+ 					close(n);
+ 				}
+ 				if(sp->pwdfd>0)
+diff -up ksh-20120801/src/cmd/ksh93/sh/xec.c.fdstatus ksh-20120801/src/cmd/ksh93/sh/xec.c
+--- ksh-20120801/src/cmd/ksh93/sh/xec.c.fdstatus	2012-07-23 16:49:32.000000000 +0200
++++ ksh-20120801/src/cmd/ksh93/sh/xec.c	2013-07-04 17:57:47.153712116 +0200
+@@ -116,7 +116,7 @@ static int iousepipe(Shell_t *shp)
+ 		return(0);
+ 	usepipe++;
+ 	fcntl(subpipe[0],F_SETFD,FD_CLOEXEC);
+-	subpipe[2] = fcntl(1,F_DUPFD,10);
++	subpipe[2] = sh_fcntl(1,F_DUPFD,10);
+ 	fcntl(subpipe[2],F_SETFD,FD_CLOEXEC);
+ 	shp->fdstatus[subpipe[2]] = shp->fdstatus[1];
+ 	close(1);
+@@ -3622,7 +3622,7 @@ static void coproc_init(Shell_t *shp, in
+ 		sh_pipe(shp->cpipe);
+ 		if((outfd=shp->cpipe[1]) < 10) 
+ 		{
+-		        int fd=fcntl(shp->cpipe[1],F_DUPFD,10);
++		        int fd=sh_fcntl(shp->cpipe[1],F_DUPFD,10);
+ 			if(fd>=10)
+ 			{
+ 			        shp->fdstatus[fd] = (shp->fdstatus[outfd]&~IOCLEX);
diff --git a/source/ap/ksh93/patches/ksh-20100621-manfix3.patch b/source/ap/ksh93/patches/ksh-20100621-manfix3.patch
new file mode 100644
index 00000000..bced5751
--- /dev/null
+++ b/source/ap/ksh93/patches/ksh-20100621-manfix3.patch
@@ -0,0 +1,12 @@
+diff -up ksh-20100621/src/cmd/ksh93/sh.1.manfix3 ksh-20100621/src/cmd/ksh93/sh.1
+--- ksh-20100621/src/cmd/ksh93/sh.1.manfix3	2013-05-02 13:07:51.180529762 +0200
++++ ksh-20100621/src/cmd/ksh93/sh.1	2013-05-02 13:11:30.469327199 +0200
+@@ -7585,7 +7585,7 @@ file descriptor 2.
+ If the
+ .B \-i
+ option is present or
+-if the shell input and output are attached to a terminal (as told by
++if the shell input and error output are attached to a terminal (as told by
+ .IR tcgetattr (2)),
+ then this shell is
+ .IR interactive .
diff --git a/source/ap/ksh93/patches/ksh-20120801-alarmifs.patch b/source/ap/ksh93/patches/ksh-20120801-alarmifs.patch
new file mode 100644
index 00000000..88b0ba9e
--- /dev/null
+++ b/source/ap/ksh93/patches/ksh-20120801-alarmifs.patch
@@ -0,0 +1,33 @@
+--- ksh-20120801/src/cmd/ksh93/sh/init.c	2014-12-10 20:11:17.693446084 -0200
++++ ksh-20120801/src/cmd/ksh93/sh/init.c	2014-12-10 20:11:24.753442619 -0200
+@@ -576,6 +576,7 @@ static char* get_ifs(register Namval_t*
+ 			shp->ifstable[' '] = shp->ifstable['\t'] = S_SPACE;
+ 			shp->ifstable['\n'] = S_NL;
+ 		}
++		shp->ifstable[0] = S_EOF;
+ 	}
+ 	return(value);
+ }
+--- ksh-20120801/src/cmd/ksh93/bltins/alarm.c	2014-12-18 12:03:39.198461933 -0200
++++ ksh-20120801/src/cmd/ksh93/bltins/alarm.c	2014-12-18 12:04:32.464421268 -0200
+@@ -130,6 +130,7 @@ void	sh_timetraps(Shell_t *shp)
+ {
+ 	register struct tevent *tp, *tpnext;
+ 	register struct tevent *tptop;
++	char	ifstable[256];
+ 	while(1)
+ 	{
+ 		shp->sigflag[SIGALRM] &= ~SH_SIGALRM;
+@@ -141,7 +142,11 @@ void	sh_timetraps(Shell_t *shp)
+ 			{
+ 				tp->flags &= ~L_FLAG;
+ 				if(tp->action)
++				{
++				    	memcpy(ifstable,shp->ifstable,sizeof(ifstable));
+ 					sh_fun(tp->action,tp->node,(char**)0);
++					memcpy(shp->ifstable,ifstable,sizeof(ifstable));
++				}
+ 				tp->flags &= ~L_FLAG;
+ 				if(!tp->flags)
+ 				{
+
diff --git a/source/ap/ksh93/patches/ksh-20120801-argvfix.patch b/source/ap/ksh93/patches/ksh-20120801-argvfix.patch
new file mode 100644
index 00000000..b0e1a782
--- /dev/null
+++ b/source/ap/ksh93/patches/ksh-20120801-argvfix.patch
@@ -0,0 +1,13 @@
+diff -up ksh-20120801/src/cmd/ksh93/sh/main.c.fixargs ksh-20120801/src/cmd/ksh93/sh/main.c
+--- ksh-20120801/src/cmd/ksh93/sh/main.c.fixargs	2013-12-31 11:32:14.917874134 +0100
++++ ksh-20120801/src/cmd/ksh93/sh/main.c	2013-12-31 11:32:58.028847126 +0100
+@@ -757,7 +757,7 @@ static void fixargs(char **argv, int mod
+ 		offset += size;
+ 		buff[offset++] = ' ';
+ 	}
+-	buff[offset-1] = 0;
++	memset(&buff[offset - 1], 0, command_len - offset + 1);
+ #   ifdef PSTAT
+ 	un.pst_command = stakptr(0);
+ 	pstat(PSTAT_SETCMD,un,0,0,0);
+
diff --git a/source/ap/ksh93/patches/ksh-20120801-assoc-unset-leak.patch b/source/ap/ksh93/patches/ksh-20120801-assoc-unset-leak.patch
new file mode 100644
index 00000000..1af7d166
--- /dev/null
+++ b/source/ap/ksh93/patches/ksh-20120801-assoc-unset-leak.patch
@@ -0,0 +1,20 @@
+diff -up ksh-20120801/src/cmd/ksh93/sh/name.c.orig ksh-20120801/src/cmd/ksh93/sh/name.c
+--- ksh-20120801/src/cmd/ksh93/sh/name.c.orig	2015-02-10 17:15:37.180783550 -0200
++++ ksh-20120801/src/cmd/ksh93/sh/name.c	2015-02-10 18:25:51.726228437 -0200
+@@ -1298,7 +1298,16 @@ void nv_delete(Namval_t* np, Dt_t *root,
+ 		if(dtdelete(root,np))
+ 		{
+ 			if(!(flags&NV_NOFREE) && ((flags&NV_FUNCTION) || !nv_subsaved(np,flags&NV_TABLE)))
++			{
++				Namarr_t	*ap;
++				if(nv_isarray(np) && np->nvfun && (ap=nv_arrayptr(np)) && array_assoc(ap)) {
++					while(nv_associative(np,0,NV_ANEXT))
++						nv_associative(np, 0, NV_ADELETE);
++					nv_associative(np, 0, NV_AFREE);
++					free((void*)np->nvfun);
++				}
+ 				free((void*)np);
++			}
+ 		}
+ #if 0
+ 		else
diff --git a/source/ap/ksh93/patches/ksh-20120801-cdfix3.patch b/source/ap/ksh93/patches/ksh-20120801-cdfix3.patch
new file mode 100644
index 00000000..7e47f711
--- /dev/null
+++ b/source/ap/ksh93/patches/ksh-20120801-cdfix3.patch
@@ -0,0 +1,12 @@
+diff -up ksh-20120801/src/cmd/ksh93/bltins/cd_pwd.c.cdfix3 ksh-20120801/src/cmd/ksh93/bltins/cd_pwd.c
+--- ksh-20120801/src/cmd/ksh93/bltins/cd_pwd.c.cdfix3	2014-06-20 12:39:02.757407689 +0200
++++ ksh-20120801/src/cmd/ksh93/bltins/cd_pwd.c	2014-06-20 12:40:19.530998070 +0200
+@@ -290,7 +290,7 @@ int	b_cd(int argc, char *argv[],Shbltin_
+ 		if(newdirfd >=0)
+ 		{
+ 			/* chdir for directories on HSM/tapeworms may take minutes */
+-			if(fchdir(newdirfd) >= 0)
++			if((rval=fchdir(newdirfd)) >= 0)
+ 			{
+ 				if(shp->pwdfd >= 0)
+ 					sh_close(shp->pwdfd);
diff --git a/source/ap/ksh93/patches/ksh-20120801-cdfork.patch b/source/ap/ksh93/patches/ksh-20120801-cdfork.patch
new file mode 100644
index 00000000..c82cb4c0
--- /dev/null
+++ b/source/ap/ksh93/patches/ksh-20120801-cdfork.patch
@@ -0,0 +1,40 @@
+--- ksh-20120801/src/cmd/ksh93/sh/path.c	2014-09-01 15:08:06.738969962 -0300
++++ ksh-20120801/src/cmd/ksh93/sh/path.c	2014-09-01 15:13:51.321459978 -0300
+@@ -229,13 +229,12 @@ static pid_t path_xargs(Shell_t *shp,con
+ /*
+  * make sure PWD is set up correctly
+  * Return the present working directory
+- * Invokes getcwd() if flag==0 and if necessary
++ * Invokes getcwd() if necessary
+  * Sets the PWD variable to this value
+  */
+ char *path_pwd(Shell_t *shp,int flag)
+ {
+ 	register char *cp;
+-	register char *dfault = (char*)e_dot;
+ 	register int count = 0;
+ 	if(shp->pwd)
+ 		return((char*)shp->pwd);
+@@ -254,11 +253,6 @@ char *path_pwd(Shell_t *shp,int flag)
+ 				cp = "/";
+ 				break;
+ 			case 3:
+-				cp = (char*)e_crondir;
+-				if(flag) /* skip next case when non-zero flag */
+-					++count;
+-				break;
+-			case 4:
+ 			{
+ 				if(cp=getcwd(NIL(char*),0))
+ 				{  
+@@ -269,8 +263,8 @@ char *path_pwd(Shell_t *shp,int flag)
+ 				}
+ 				break;
+ 			}
+-			case 5:
++			case 4:
+-				return(dfault);
++				return((char*)e_dot);
+ 		}
+ 		if(cp && *cp=='/' && test_inode(cp,e_dot))
+ 			break;
diff --git a/source/ap/ksh93/patches/ksh-20120801-covsfix.patch b/source/ap/ksh93/patches/ksh-20120801-covsfix.patch
new file mode 100644
index 00000000..c64e2a79
--- /dev/null
+++ b/source/ap/ksh93/patches/ksh-20120801-covsfix.patch
@@ -0,0 +1,58 @@
+diff -up ksh-20120801/src/cmd/ksh93/sh/init.c.covsfix ksh-20120801/src/cmd/ksh93/sh/init.c
+--- ksh-20120801/src/cmd/ksh93/sh/init.c.covsfix	2013-07-22 17:41:34.674054068 +0200
++++ ksh-20120801/src/cmd/ksh93/sh/init.c	2013-07-22 17:42:50.761361921 +0200
+@@ -1237,9 +1237,11 @@ static void put_mode(Namval_t* np, const
+ 				mode = *(double*)val;
+ 		}
+ 		else
++		{
+ 			mode = strperm(val, &last,0);
+-		if(*last)
+-			errormsg(SH_DICT,ERROR_exit(1),"%s: invalid mode string",val);
++			if(*last)
++				errormsg(SH_DICT,ERROR_exit(1),"%s: invalid mode string",val);
++		}
+ 		nv_putv(np,(char*)&mode,NV_INTEGER,nfp);
+ 	}
+ 	else
+diff -up ksh-20120801/src/cmd/ksh93/sh/io.c.covsfix ksh-20120801/src/cmd/ksh93/sh/io.c
+--- ksh-20120801/src/cmd/ksh93/sh/io.c.covsfix	2013-07-22 17:06:30.282927080 +0200
++++ ksh-20120801/src/cmd/ksh93/sh/io.c	2013-07-22 17:08:49.645721280 +0200
+@@ -954,6 +954,7 @@ int	sh_pipe(register int pv[])
+ 	socklen_t		slen;
+ 	if ((pv[out] = socket (AF_INET, SOCK_STREAM, 0)) < 0)
+ 		errormsg(SH_DICT,ERROR_system(1),e_pipe);
++	memset(&sin.sin_zero, 0, sizeof(sin.sin_zero));
+ 	do
+ 	{
+ 		sin.sin_family = AF_INET;
+diff -up ksh-20120801/src/cmd/ksh93/sh/name.c.covsfix ksh-20120801/src/cmd/ksh93/sh/name.c
+--- ksh-20120801/src/cmd/ksh93/sh/name.c.covsfix	2013-07-22 17:40:31.644635604 +0200
++++ ksh-20120801/src/cmd/ksh93/sh/name.c	2013-07-22 17:41:15.828227073 +0200
+@@ -3094,6 +3094,7 @@ void nv_newattr (register Namval_t *np,
+ 			if(!mp)
+ 				nv_putval (np, cp, NV_RDONLY);
+ 			free(cp);
++			cp = NULL;
+ 		}
+ 	}
+ 	while(ap && nv_nextsub(np));
+diff -up ksh-20120801/src/cmd/ksh93/sh/subshell.c.covsfix ksh-20120801/src/cmd/ksh93/sh/subshell.c
+--- ksh-20120801/src/cmd/ksh93/sh/subshell.c.covsfix	2013-07-22 17:46:15.607533423 +0200
++++ ksh-20120801/src/cmd/ksh93/sh/subshell.c	2013-07-22 17:48:36.739290968 +0200
+@@ -205,7 +205,14 @@ void sh_subfork(void)
+ 		shp->comsub = 0;
+ 		SH_SUBSHELLNOD->nvalue.s = 0;
+ 		sp->subpid=0;
+-		shp->st.trapcom[0] = (comsub==2?NULL:trap);
++		if (comsub==2)
++		{
++			shp->st.trapcom[0] = NULL;
++			if(trap)
++				free((void*)trap);
++		}
++		else
++			shp->st.trapcom[0] = (comsub==2?NULL:trap);
+ 		shp->savesig = 0;
+ 	}
+ }
diff --git a/source/ap/ksh93/patches/ksh-20120801-crash.patch b/source/ap/ksh93/patches/ksh-20120801-crash.patch
new file mode 100644
index 00000000..63eda722
--- /dev/null
+++ b/source/ap/ksh93/patches/ksh-20120801-crash.patch
@@ -0,0 +1,64 @@
+diff -up ksh-20120801/src/cmd/ksh93/include/jobs.h.crash ksh-20120801/src/cmd/ksh93/include/jobs.h
+--- ksh-20120801/src/cmd/ksh93/include/jobs.h.crash	2014-07-16 17:32:03.570057304 +0200
++++ ksh-20120801/src/cmd/ksh93/include/jobs.h	2014-07-16 17:32:03.600057172 +0200
+@@ -118,6 +118,7 @@ struct jobs
+ 	char		jobcontrol;	/* turned on for real job control */
+ 	char		waitsafe;	/* wait will not block */
+ 	char		waitall;	/* wait for all jobs in pipe */
++	char		hack1_waitall;
+ 	char		toclear;	/* job table needs clearing */
+ 	unsigned char	*freejobs;	/* free jobs numbers */
+ #if SHOPT_COSHELL
+diff -up ksh-20120801/src/cmd/ksh93/sh/jobs.c.crash ksh-20120801/src/cmd/ksh93/sh/jobs.c
+--- ksh-20120801/src/cmd/ksh93/sh/jobs.c.crash	2014-07-16 17:32:03.554057375 +0200
++++ ksh-20120801/src/cmd/ksh93/sh/jobs.c	2014-07-16 17:32:03.600057172 +0200
+@@ -1957,6 +1957,7 @@ again:
+ 	{
+ 		count = bp->count;
+ 		jp = bp->list;
++		jpold = 0;
+ 		goto again;
+ 	}
+ 	if(jp)
+diff -up ksh-20120801/src/cmd/ksh93/sh/subshell.c.crash ksh-20120801/src/cmd/ksh93/sh/subshell.c
+--- ksh-20120801/src/cmd/ksh93/sh/subshell.c.crash	2014-07-16 17:32:03.593057203 +0200
++++ ksh-20120801/src/cmd/ksh93/sh/subshell.c	2014-07-16 17:32:03.600057172 +0200
+@@ -492,6 +492,7 @@ Sfio_t *sh_subshell(Shell_t *shp,Shnode_
+ 	struct sh_scoped savst;
+ 	struct dolnod   *argsav=0;
+ 	int argcnt;
++        int pipefail = 0;
+ 	memset((char*)sp, 0, sizeof(*sp));
+ 	sfsync(shp->outpool);
+ 	sh_sigcheck(shp);
+@@ -541,7 +542,10 @@ Sfio_t *sh_subshell(Shell_t *shp,Shnode_
+ 	sp->comsub = shp->comsub;
+ 	shp->subshare = comsub==2 ||  (comsub==1 && sh_isoption(SH_SUBSHARE));
+ 	if(comsub)
++	{
+ 		shp->comsub = comsub;
++		job.hack1_waitall=(comsub==1);
++	}
+ 	sp->shpwdfd=-1;
+ 	if(!comsub || !shp->subshare)
+ 	{
+@@ -648,6 +652,7 @@ Sfio_t *sh_subshell(Shell_t *shp,Shnode_
+ 		}
+ 		else
+ 		{
++			job.hack1_waitall=0;
+ 			/* move tmp file to iop and restore sfstdout */
+ 			iop = sfswap(sfstdout,NIL(Sfio_t*));
+ 			if(!iop)
+diff -up ksh-20120801/src/cmd/ksh93/sh/xec.c.crash ksh-20120801/src/cmd/ksh93/sh/xec.c
+--- ksh-20120801/src/cmd/ksh93/sh/xec.c.crash	2014-07-16 17:32:03.587057230 +0200
++++ ksh-20120801/src/cmd/ksh93/sh/xec.c	2014-07-16 17:32:03.601057168 +0200
+@@ -2125,7 +2125,7 @@ int sh_exec(register const Shnode_t *t,
+ 				memset(exitval,0,job.waitall*sizeof(int));
+ 			}
+ 			else
+-				job.waitall |= !pipejob && sh_isstate(SH_MONITOR);
++				job.waitall |= job.hack1_waitall || !pipejob && sh_isstate(SH_MONITOR);
+ 			job_lock();
+ 			nlock++;
+ 			do
diff --git a/source/ap/ksh93/patches/ksh-20120801-diskfull.patch b/source/ap/ksh93/patches/ksh-20120801-diskfull.patch
new file mode 100644
index 00000000..9d68d935
--- /dev/null
+++ b/source/ap/ksh93/patches/ksh-20120801-diskfull.patch
@@ -0,0 +1,20 @@
+--- ksh-20120801/src/cmd/ksh93/sh/main.c	2015-04-17 16:55:57.802048900 -0300
++++ ksh-20120801/src/cmd/ksh93/sh/main.c	2015-04-17 17:10:45.276129709 -0300
+@@ -423,7 +423,7 @@ static void	exfile(register Shell_t *shp
+ 		sfsync(shp->outpool);
+ 		shp->st.execbrk = shp->st.breakcnt = 0;
+ 		/* check for return from profile or env file */
+-		if(sh_isstate(SH_PROFILE) && (jmpval==SH_JMPFUN || jmpval==SH_JMPEXIT))
++		if(sh_isstate(SH_PROFILE) && (jmpval==SH_JMPFUN || jmpval==SH_JMPEXIT || jmpval==SH_JMPERREXIT))
+ 		{
+ 			sh_setstate(states);
+ 			goto done;
+@@ -600,6 +600,8 @@ done:
+ 		siglongjmp(*shp->jmplist,jmpval);
+ 	else if(jmpval == SH_JMPEXIT)
+ 		sh_done(shp,0);
++	else if(jmpval == SH_JMPERREXIT)
++		sh_done(shp,-1);
+ 	if(fno>0)
+ 		sh_close(fno);
+ 	if(shp->st.filename)
diff --git a/source/ap/ksh93/patches/ksh-20120801-emptyarrayinit.patch b/source/ap/ksh93/patches/ksh-20120801-emptyarrayinit.patch
new file mode 100644
index 00000000..c888b319
--- /dev/null
+++ b/source/ap/ksh93/patches/ksh-20120801-emptyarrayinit.patch
@@ -0,0 +1,11 @@
+--- ksh-20120801/src/cmd/ksh93/sh/array.c	2014-12-11 16:39:34.253860675 -0200
++++ ksh-20120801/src/cmd/ksh93/sh/array.c	2014-12-11 16:39:40.794857083 -0200
+@@ -1003,7 +1003,7 @@ Namarr_t *nv_setarray(Namval_t *np, void
+ 		ap->nelem = nelem;
+ 		ap->fun = fun;
+ 		nv_onattr(np,NV_ARRAY);
+-		if(fp || value)
++		if(fp || (value && value != Empty))
+ 		{
+ 			nv_putsub(np, "0", ARRAY_ADD);
+ 			if(value)
diff --git a/source/ap/ksh93/patches/ksh-20120801-fd2lost.patch b/source/ap/ksh93/patches/ksh-20120801-fd2lost.patch
new file mode 100644
index 00000000..fbb76070
--- /dev/null
+++ b/source/ap/ksh93/patches/ksh-20120801-fd2lost.patch
@@ -0,0 +1,64 @@
+diff -up ksh-20120801/src/cmd/ksh93/sh/macro.c.orig ksh-20120801/src/cmd/ksh93/sh/macro.c
+--- ksh-20120801/src/cmd/ksh93/sh/macro.c.orig	2013-12-09 13:13:22.153525239 +0100
++++ ksh-20120801/src/cmd/ksh93/sh/macro.c	2013-12-09 13:20:58.144635385 +0100
+@@ -391,7 +391,7 @@ void sh_machere(Shell_t *shp,Sfio_t *inf
+ 				break;
+ 			    }
+ 			    case S_PAR:
+-				comsubst(mp,(Shnode_t*)0,1);
++				comsubst(mp,(Shnode_t*)0,3);
+ 				break;
+ 			    case S_EOF:
+ 				if((c=fcfill()) > 0)
+@@ -1165,7 +1165,7 @@ retry1:
+ 	    case S_PAR:
+ 		if(type)
+ 			goto nosub;
+-		comsubst(mp,(Shnode_t*)0,1);
++		comsubst(mp,(Shnode_t*)0,3);
+ 		return(1);
+ 	    case S_DIG:
+ 		var = 0;
+@@ -2152,10 +2152,12 @@ static void comsubst(Mac_t *mp,register
+ 	mp->ifsp = nv_getval(np);
+ 	stkset(stkp,savptr,savtop);
+ 	newlines = 0;
+-	if(type/*==3 - don't break `` vs $() */ && mp->shp->spid)
++	if(type==3 && mp->shp->spid)
+ 	{
+ 		job_wait(mp->shp->spid);
+-		mp->shp->spid = 0;
++		if(mp->shp->pipepid==mp->shp->spid)
++			mp->shp->spid = 0;
++		mp->shp->pipepid = 0;
+ 	}
+ 	sfsetbuf(sp,(void*)sp,0);
+ 	bufsize = sfvalue(sp);
+diff -up ksh-20120801/src/cmd/ksh93/sh/subshell.c.anotherfix ksh-20120801/src/cmd/ksh93/sh/subshell.c
+--- ksh-20120801/src/cmd/ksh93/sh/subshell.c.anotherfix	2014-01-20 14:43:46.410416327 +0100
++++ ksh-20120801/src/cmd/ksh93/sh/subshell.c	2014-01-20 14:43:46.444416042 +0100
+@@ -122,7 +122,8 @@ void	sh_subtmpfile(Shell_t *shp)
+ 		else if(errno!=EBADF)
+ 			errormsg(SH_DICT,ERROR_system(1),e_toomany);
+ 		/* popping a discipline forces a /tmp file create */
+-		sfdisc(sfstdout,SF_POPDISC);
++		if(shp->comsub != 1)
++			sfdisc(sfstdout,SF_POPDISC);
+ 		if((fd=sffileno(sfstdout))<0)
+ 		{
+ 			/* unable to create the /tmp file so use a pipe */
+diff -up ksh-20120801/src/cmd/ksh93/sh/xec.c.anotherfix ksh-20120801/src/cmd/ksh93/sh/xec.c
+--- ksh-20120801/src/cmd/ksh93/sh/xec.c.anotherfix	2014-01-20 14:47:30.527524008 +0100
++++ ksh-20120801/src/cmd/ksh93/sh/xec.c	2014-01-20 14:47:30.563523703 +0100
+@@ -1773,7 +1773,11 @@ int sh_exec(register const Shnode_t *t,
+ 					if(shp->pipepid)
+ 						shp->pipepid = parent;
+ 					else
++					{
+ 						job_wait(parent);
++						if(parent==shp->spid)
++							shp->spid = 0;
++					}
+ 					if(shp->topfd > topfd)
+ 						sh_iorestore(shp,topfd,0);
+ 					if(usepipe && tsetio &&  subdup && unpipe)
diff --git a/source/ap/ksh93/patches/ksh-20120801-filecomsubst.patch b/source/ap/ksh93/patches/ksh-20120801-filecomsubst.patch
new file mode 100644
index 00000000..6aa1fea9
--- /dev/null
+++ b/source/ap/ksh93/patches/ksh-20120801-filecomsubst.patch
@@ -0,0 +1,11 @@
+diff -up ksh-20120801/src/cmd/ksh93/sh/io.c.filecombsubst ksh-20120801/src/cmd/ksh93/sh/io.c
+--- ksh-20120801/src/cmd/ksh93/sh/io.c.filecombsubst	2014-02-26 16:15:52.355391420 +0100
++++ ksh-20120801/src/cmd/ksh93/sh/io.c	2014-02-26 16:23:55.588148801 +0100
+@@ -1326,6 +1326,7 @@ int	sh_redirect(Shell_t *shp,struct iono
+ 				if(flag==SH_SHOWME)
+ 					goto traceit;
+ 				fd=sh_chkopen(fname);
++				fd=sh_iomovefd(fd);
+ 			}
+ 			else if(sh_isoption(SH_RESTRICTED))
+ 				errormsg(SH_DICT,ERROR_exit(1),e_restricted,fname);
diff --git a/source/ap/ksh93/patches/ksh-20120801-forkbomb.patch b/source/ap/ksh93/patches/ksh-20120801-forkbomb.patch
new file mode 100644
index 00000000..7a1a5c16
--- /dev/null
+++ b/source/ap/ksh93/patches/ksh-20120801-forkbomb.patch
@@ -0,0 +1,12 @@
+diff -up ksh-20120801/src/cmd/ksh93/sh/fault.c.forkbomb ksh-20120801/src/cmd/ksh93/sh/fault.c
+--- ksh-20120801/src/cmd/ksh93/sh/fault.c.forkbomb	2013-04-30 16:20:40.237490109 +0200
++++ ksh-20120801/src/cmd/ksh93/sh/fault.c	2013-04-30 16:21:49.961068778 +0200
+@@ -519,7 +519,7 @@ void sh_exit(register int xno)
+ 	if(pp && pp->mode>1)
+ 		cursig = -1;
+ #ifdef SIGTSTP
+-	if(shp->trapnote&SH_SIGTSTP)
++	if((shp->trapnote&SH_SIGTSTP) && job.jobcontrol)
+ 	{
+ 		/* ^Z detected by the shell */
+ 		shp->trapnote = 0;
diff --git a/source/ap/ksh93/patches/ksh-20120801-fununset.patch b/source/ap/ksh93/patches/ksh-20120801-fununset.patch
new file mode 100644
index 00000000..1f5cb17c
--- /dev/null
+++ b/source/ap/ksh93/patches/ksh-20120801-fununset.patch
@@ -0,0 +1,12 @@
+diff -up ksh-20120801/src/cmd/ksh93/sh/xec.c.fununset ksh-20120801/src/cmd/ksh93/sh/xec.c
+--- ksh-20120801/src/cmd/ksh93/sh/xec.c.fununset	2014-06-16 14:21:09.293513844 +0200
++++ ksh-20120801/src/cmd/ksh93/sh/xec.c	2014-06-16 14:21:09.309513760 +0200
+@@ -3570,7 +3570,7 @@ static void sh_funct(Shell_t *shp,Namval
+ #endif
+ 	nv_putval(SH_PATHNAMENOD,shp->st.filename,NV_NOFREE);
+ 	shp->pipepid = pipepid;
+-	np->nvalue.rp->running  -= 2;
++	if (np->nvalue.rp) np->nvalue.rp->running  -= 2;
+ }
+ 
+ /*
diff --git a/source/ap/ksh93/patches/ksh-20120801-heresub.patch b/source/ap/ksh93/patches/ksh-20120801-heresub.patch
new file mode 100644
index 00000000..880071cd
--- /dev/null
+++ b/source/ap/ksh93/patches/ksh-20120801-heresub.patch
@@ -0,0 +1,32 @@
+diff -up ksh-20120801/src/cmd/ksh93/sh/lex.c.heresub ksh-20120801/src/cmd/ksh93/sh/lex.c
+--- ksh-20120801/src/cmd/ksh93/sh/lex.c.heresub	2014-05-21 16:48:42.635700984 +0200
++++ ksh-20120801/src/cmd/ksh93/sh/lex.c	2014-05-21 16:48:42.678700772 +0200
+@@ -1557,6 +1557,7 @@ static int comsub(register Lex_t *lp, in
+ {
+ 	register int	n,c,count=1;
+ 	register int	line=lp->sh->inlineno;
++	struct ionod	*inheredoc = lp->heredoc;
+ 	char *first,*cp=fcseek(0),word[5];
+ 	int off, messages=0, assignok=lp->assignok, csub;
+ 	struct lexstate	save;
+@@ -1683,7 +1684,7 @@ done:
+ 	lp->lexd.dolparen--;
+ 	lp->lex = save;
+ 	lp->assignok = (endchar(lp)==RBRACT?assignok:0);
+-	if(lp->heredoc)
++	if(lp->heredoc && !inheredoc)
+ 		errormsg(SH_DICT,ERROR_exit(SYNBAD),e_lexsyntax5,lp->sh->inlineno,lp->heredoc->ioname);
+ 	return(messages);
+ }
+diff -up ksh-20120801/src/cmd/ksh93/sh/macro.c.heresub ksh-20120801/src/cmd/ksh93/sh/macro.c
+--- ksh-20120801/src/cmd/ksh93/sh/macro.c.heresub	2014-05-21 16:48:42.650700910 +0200
++++ ksh-20120801/src/cmd/ksh93/sh/macro.c	2014-05-21 16:48:42.678700772 +0200
+@@ -2085,7 +2085,7 @@ static void comsubst(Mac_t *mp,register
+ 			}
+ 			sfputc(stkp,c);
+ 		}
+-		sfputc(stkp,' ');
++		sfputc(stkp,'\n');
+ 		c = stktell(stkp);
+ 		str=stkfreeze(stkp,1);
+ 		/* disable verbose and don't save in history file */
diff --git a/source/ap/ksh93/patches/ksh-20120801-kshmfix.patch b/source/ap/ksh93/patches/ksh-20120801-kshmfix.patch
new file mode 100644
index 00000000..cc684066
--- /dev/null
+++ b/source/ap/ksh93/patches/ksh-20120801-kshmfix.patch
@@ -0,0 +1,66 @@
+diff -up ksh-20120801/src/cmd/ksh93/sh/main.c.monintoron ksh-20120801/src/cmd/ksh93/sh/main.c
+--- ksh-20120801/src/cmd/ksh93/sh/main.c.monintoron	2013-05-31 10:15:02.738828102 +0200
++++ ksh-20120801/src/cmd/ksh93/sh/main.c	2013-05-31 10:15:36.057095262 +0200
+@@ -406,10 +406,10 @@ static void	exfile(register Shell_t *shp
+ 		{
+ 			buff.mode = SH_JMPEXIT;
+ 			sh_onoption(SH_TRACKALL);
+-			sh_offoption(SH_MONITOR);
+ 		}
+ 		sh_offstate(SH_INTERACTIVE);
+-		sh_offstate(SH_MONITOR);
++		if(sh_isoption(SH_MONITOR))
++			sh_onstate(SH_MONITOR);
+ 		sh_offstate(SH_HISTORY);
+ 		sh_offoption(SH_HISTORY);
+ 	}
+diff -up ksh-20120801/src/cmd/ksh93/sh/jobs.c.orig ksh-20120801/src/cmd/ksh93/sh/jobs.c
+--- ksh-20120801/src/cmd/ksh93/sh/jobs.c.orig	2013-05-31 10:12:28.358590452 +0200
++++ ksh-20120801/src/cmd/ksh93/sh/jobs.c	2013-05-31 10:16:51.203697890 +0200
+@@ -548,7 +548,7 @@ int job_reap(register int sig)
+ 		{
+ 			px = job_byjid((int)pw->p_job);
+ 			for(; px && (px->p_flag&P_DONE); px=px->p_nxtproc);
+-			if(!px)
++			if(!px && sh_isoption(SH_INTERACTIVE))
+ 				tcsetpgrp(JOBTTY,job.mypid);
+ 		}
+ #ifndef SHOPT_BGX
+@@ -842,10 +842,11 @@ static void job_set(register struct proc
+ 
+ static void job_reset(register struct process *pw)
+ {
++	Shell_t *shp = pw->p_shp;
+ 	/* save the terminal state for current job */
+ #ifdef SIGTSTP
+ 	job_fgrp(pw,tcgetpgrp(job.fd));
+-	if(tcsetpgrp(job.fd,job.mypid) !=0)
++	if(sh_isoption(SH_INTERACTIVE) && tcsetpgrp(job.fd,job.mypid) !=0)
+ 		return;
+ #endif	/* SIGTSTP */
+ 	/* force the following tty_get() to do a tcgetattr() unless fg */
+diff -up ksh-20120801/src/cmd/ksh93/sh/xec.c.orig ksh-20120801/src/cmd/ksh93/sh/xec.c
+--- ksh-20120801/src/cmd/ksh93/sh/xec.c.orig	2013-05-31 10:12:27.000000000 +0200
++++ ksh-20120801/src/cmd/ksh93/sh/xec.c	2013-05-31 10:18:14.650367185 +0200
+@@ -2201,7 +2201,7 @@ int sh_exec(register const Shnode_t *t,
+ 			}
+ 			shp->exitval = n;
+ #ifdef SIGTSTP
+-			if(!pipejob && sh_isstate(SH_MONITOR))
++			if(!pipejob && sh_isstate(SH_MONITOR) && sh_isoption(SH_INTERACTIVE))
+ 				tcsetpgrp(JOBTTY,shp->gd->pid);
+ #endif /*SIGTSTP */
+ 			job.curpgid = savepgid;
+diff -up ksh-20120801/src/cmd/ksh93/edit/edit.c.kshmfix ksh-20120801/src/cmd/ksh93/edit/edit.c
+--- ksh-20120801/src/cmd/ksh93/edit/edit.c.kshmfix      2013-09-23 10:46:57.007256192 +0200
++++ ksh-20120801/src/cmd/ksh93/edit/edit.c      2013-09-23 10:47:43.988937610 +0200
+@@ -1050,7 +1050,7 @@ int ed_getchar(register Edit_t *ep,int m
+ 		{
+ 			if(mode<=0 && -c == ep->e_intr)
+ 			{
+-				sh_fault(SIGINT);
++				killpg(getpgrp(),SIGINT);
+ 				siglongjmp(ep->e_env, UINTR);
+ 			}
+ 			if(mode<=0 && ep->sh->st.trap[SH_KEYTRAP])
+
diff --git a/source/ap/ksh93/patches/ksh-20120801-lexfix.patch b/source/ap/ksh93/patches/ksh-20120801-lexfix.patch
new file mode 100644
index 00000000..9150da80
--- /dev/null
+++ b/source/ap/ksh93/patches/ksh-20120801-lexfix.patch
@@ -0,0 +1,56 @@
+diff -up ksh-20120801/src/cmd/ksh93/edit/edit.c.trajfiks ksh-20120801/src/cmd/ksh93/edit/edit.c
+--- ksh-20120801/src/cmd/ksh93/edit/edit.c.trajfiks	2012-08-02 00:18:19.000000000 +0200
++++ ksh-20120801/src/cmd/ksh93/edit/edit.c	2014-02-06 12:12:11.570942651 +0100
+@@ -53,6 +53,7 @@
+ 
+ static char CURSOR_UP[20] = { ESC, '[', 'A', 0 };
+ static char KILL_LINE[20] = { ESC, '[', 'J', 0 };
++static char *savelex;
+ 
+ 
+ 
+@@ -232,6 +233,8 @@ int tty_set(int fd, int action, struct t
+ void tty_cooked(register int fd)
+ {
+ 	register Edit_t *ep = (Edit_t*)(shgd->ed_context);
++	if(ep->sh->st.trap[SH_KEYTRAP] && savelex)
++		memcpy(ep->sh->lex_context,savelex,ep->sh->lexsize);
+ 	ep->e_keytrap = 0;
+ 	if(ep->e_raw==0)
+ 		return;
+@@ -783,6 +786,13 @@ void	ed_setup(register Edit_t *ep, int f
+ 			ep->e_lbuf[n] = *pp++;
+ 		ep->e_default = 0;
+ 	}
++	if(ep->sh->st.trap[SH_KEYTRAP])
++	{
++		if(!savelex)
++			savelex = (char*)malloc(shp->lexsize);
++		if(savelex)
++			memcpy(savelex, ep->sh->lex_context, ep->sh->lexsize);
++	}
+ }
+ 
+ static void ed_putstring(register Edit_t *ep, const char *str)
+diff -up ksh-20120801/src/cmd/ksh93/include/defs.h.trajfiks ksh-20120801/src/cmd/ksh93/include/defs.h
+--- ksh-20120801/src/cmd/ksh93/include/defs.h.trajfiks	2014-02-06 12:18:13.149091836 +0100
++++ ksh-20120801/src/cmd/ksh93/include/defs.h	2014-02-06 12:18:13.175091784 +0100
+@@ -224,6 +224,7 @@ struct shared
+ 	int		xargexit; \
+ 	int		nenv; \
+ 	mode_t		mask; \
++	int             lexsize; \
+ 	Env_t		*env; \
+ 	void		*init_context; \
+ 	void		*mac_context; \
+diff -up ksh-20120801/src/cmd/ksh93/sh/lex.c.trajfiks ksh-20120801/src/cmd/ksh93/sh/lex.c
+--- ksh-20120801/src/cmd/ksh93/sh/lex.c.trajfiks	2014-02-06 12:19:13.587950320 +0100
++++ ksh-20120801/src/cmd/ksh93/sh/lex.c	2014-02-06 12:19:13.623950219 +0100
+@@ -268,6 +268,7 @@ Lex_t *sh_lexopen(Lex_t *lp, Shell_t *sp
+ 	{
+ 		lp = (Lex_t*)newof(0,Lex_t,1,0);
+ 		lp->sh = sp;
++		sp->lexsize = sizeof(Lex_t);
+ 	}
+ 	fcnotify(lex_advance,lp);
+ 	lp->lex.intest = lp->lex.incase = lp->lex.skipword = lp->lexd.warn = 0;
diff --git a/source/ap/ksh93/patches/ksh-20120801-locking.patch b/source/ap/ksh93/patches/ksh-20120801-locking.patch
new file mode 100644
index 00000000..189d254d
--- /dev/null
+++ b/source/ap/ksh93/patches/ksh-20120801-locking.patch
@@ -0,0 +1,26 @@
+diff -up ksh-20120801/src/cmd/ksh93/include/jobs.h.locking ksh-20120801/src/cmd/ksh93/include/jobs.h
+--- ksh-20120801/src/cmd/ksh93/include/jobs.h.locking	2014-06-27 15:51:07.144923719 +0200
++++ ksh-20120801/src/cmd/ksh93/include/jobs.h	2014-06-27 15:52:56.463272276 +0200
+@@ -149,15 +149,18 @@ extern struct jobs job;
+ #define vmbusy()	0
+ #endif
+ 
+-#define job_lock()	(job.in_critical++)
++#define asoincint(p)  __sync_fetch_and_add(p,1)
++#define asodecint(p)  __sync_fetch_and_sub(p,1)
++
++#define job_lock()	asoincint(&job.in_critical)
+ #define job_unlock()	\
+ 	do { \
+ 		int	sig; \
+-		if (!--job.in_critical && (sig = job.savesig)) \
++		if (asodecint(&job.in_critical)==1 && (sig = job.savesig)) \
+ 		{ \
+-			if (!job.in_critical++ && !vmbusy()) \
++			if (!asoincint(&job.in_critical) && !vmbusy()) \
+ 				job_reap(sig); \
+-			job.in_critical--; \
++			asodecint(&job.in_critical); \
+ 		} \
+ 	} while(0)
+ 
diff --git a/source/ap/ksh93/patches/ksh-20120801-macro.patch b/source/ap/ksh93/patches/ksh-20120801-macro.patch
new file mode 100644
index 00000000..ca8024ef
--- /dev/null
+++ b/source/ap/ksh93/patches/ksh-20120801-macro.patch
@@ -0,0 +1,205 @@
+diff -up ksh-20120801/src/cmd/ksh93/include/io.h.macro ksh-20120801/src/cmd/ksh93/include/io.h
+--- ksh-20120801/src/cmd/ksh93/include/io.h.macro	2012-07-18 16:12:38.000000000 +0200
++++ ksh-20120801/src/cmd/ksh93/include/io.h	2013-07-04 16:14:05.809595966 +0200
+@@ -81,6 +81,7 @@ extern void 	sh_iosave(Shell_t *, int,in
+ extern int 	sh_iovalidfd(Shell_t*, int);
+ extern int 	sh_inuse(Shell_t*, int);
+ extern void 	sh_iounsave(Shell_t*);
++extern void	iounpipe(Shell_t*);
+ extern int	sh_chkopen(const char*);
+ extern int	sh_ioaccess(int,int);
+ extern int	sh_devtofd(const char*);
+diff -up ksh-20120801/src/cmd/ksh93/sh/subshell.c.macro ksh-20120801/src/cmd/ksh93/sh/subshell.c
+--- ksh-20120801/src/cmd/ksh93/sh/subshell.c.macro	2013-07-04 16:14:05.783595751 +0200
++++ ksh-20120801/src/cmd/ksh93/sh/subshell.c	2013-07-04 16:15:46.673432991 +0200
+@@ -171,7 +171,7 @@ void sh_subfork(void)
+ {
+ 	register struct subshell *sp = subshell_data;
+ 	Shell_t	*shp = sp->shp;
+-	int	curenv = shp->curenv;
++	int	curenv = shp->curenv, comsub=shp->comsub;
+ 	pid_t pid;
+ 	char *trap = shp->st.trapcom[0];
+ 	if(trap)
+@@ -204,7 +204,7 @@ void sh_subfork(void)
+ 		shp->comsub = 0;
+ 		SH_SUBSHELLNOD->nvalue.s = 0;
+ 		sp->subpid=0;
+-		shp->st.trapcom[0] = trap;
++		shp->st.trapcom[0] = (comsub==2?NULL:trap);
+ 		shp->savesig = 0;
+ 	}
+ }
+@@ -743,7 +743,6 @@ Sfio_t *sh_subshell(Shell_t *shp,Shnode_
+ 		fchdir(shp->pwdfd);
+ 	}
+ 	shp->subshare = sp->subshare;
+-	shp->comsub = sp->comsub;
+ 	shp->subdup = sp->subdup;
+ #if SHOPT_COSHELL
+ 	shp->coshell = sp->coshell;
+@@ -773,7 +772,12 @@ Sfio_t *sh_subshell(Shell_t *shp,Shnode_
+ 	if(nsig>0)
+ 		kill(getpid(),nsig);
+ 	if(sp->subpid)
++	{
+ 		job_wait(sp->subpid);
++		if(comsub>1)
++			iounpipe(shp);
++	}
++	shp->comsub = sp->comsub;
+ 	if(comsub && iop && sp->pipefd<0)
+ 		sfseek(iop,(off_t)0,SEEK_SET);
+ 	if(shp->trapnote)
+diff -up ksh-20120801/src/cmd/ksh93/sh/xec.c.macro ksh-20120801/src/cmd/ksh93/sh/xec.c
+--- ksh-20120801/src/cmd/ksh93/sh/xec.c.macro	2013-07-04 16:14:05.800595891 +0200
++++ ksh-20120801/src/cmd/ksh93/sh/xec.c	2013-07-04 16:14:05.810595975 +0200
+@@ -102,11 +102,11 @@ struct funenv
+  * temp file.
+  */
+ static int      subpipe[3],subdup,tsetio,usepipe;
+-static void iounpipe(Shell_t*);
++void iounpipe(Shell_t*);
+ 
+-static int iousepipe(Shell_t *shp)
++int iousepipe(Shell_t *shp)
+ {
+-	int i;
++	int fd=sffileno(sfstdout),i,err=errno;
+ 	if(usepipe)
+ 	{
+ 		usepipe++;
+@@ -115,13 +115,18 @@ static int iousepipe(Shell_t *shp)
+ 	if(sh_rpipe(subpipe) < 0)
+ 		return(0);
+ 	usepipe++;
+-	fcntl(subpipe[0],F_SETFD,FD_CLOEXEC);
+-	subpipe[2] = sh_fcntl(1,F_DUPFD,10);
+-	fcntl(subpipe[2],F_SETFD,FD_CLOEXEC);
++	if(shp->comsub!=1)
++	{
++		subpipe[2] = sh_fcntl(subpipe[1],F_DUPFD,10);
++		sh_close(subpipe[1]);
++		return(1);
++	}
++	subpipe[2] = sh_fcntl(fd,F_dupfd_cloexec,10);
+ 	shp->fdstatus[subpipe[2]] = shp->fdstatus[1];
+-	close(1);
+-	fcntl(subpipe[1],F_DUPFD,1);
+-	shp->fdstatus[1] = shp->fdstatus[subpipe[1]];
++	while(close(fd)<0 && errno==EINTR)
++		errno = err;
++	fcntl(subpipe[1],F_DUPFD,fd);
++	shp->fdstatus[1] = shp->fdstatus[subpipe[1]]&~IOCLEX;
+ 	sh_close(subpipe[1]);
+ 	if(subdup=shp->subdup) for(i=0; i < 10; i++)
+ 	{
+@@ -135,14 +140,23 @@ static int iousepipe(Shell_t *shp)
+ 	return(1);
+ }
+ 
+-static void iounpipe(Shell_t *shp)
++void iounpipe(Shell_t *shp)
+ {
+-	int n;
++	int fd=sffileno(sfstdout),n,err=errno;
+ 	char buff[SF_BUFSIZE];
+-	close(1);
+-	fcntl(subpipe[2], F_DUPFD, 1);
+-	shp->fdstatus[1] = shp->fdstatus[subpipe[2]];
++	if(!usepipe)
++		return;
+ 	--usepipe;
++	if(shp->comsub>1)
++	{
++		sh_close(subpipe[2]);
++		while(read(subpipe[0],buff,sizeof(buff))>0);
++		goto done;
++	}
++	while(close(fd)<0 && errno==EINTR)
++		errno = err;
++	fcntl(subpipe[2], F_DUPFD, fd);
++	shp->fdstatus[1] = shp->fdstatus[subpipe[2]];
+ 	if(subdup) for(n=0; n < 10; n++)
+ 	{
+ 		if(subdup&(1<<n))
+@@ -174,6 +188,7 @@ static void iounpipe(Shell_t *shp)
+ 		else if(errno!=EINTR)
+ 			break;
+ 	}
++done:
+ 	sh_close(subpipe[0]);
+ 	subpipe[0] = -1;
+ 	tsetio = 0;
+@@ -725,7 +740,7 @@ static void unset_instance(Namval_t *nq,
+ }
+ 
+ #if SHOPT_COSHELL
+-uintmax_t	coused;
++static uintmax_t	coused;
+ /*
+  * print out function definition
+  */
+@@ -1619,10 +1634,14 @@ int sh_exec(register const Shnode_t *t,
+ 			if(shp->subshell)
+ 			{
+ 				sh_subtmpfile(shp);
+-				if(shp->comsub==1 && !(shp->fdstatus[1]&IONOSEEK))
+-					unpipe=iousepipe(shp);
+ 				if((type&(FAMP|TFORK))==(FAMP|TFORK))
+-					sh_subfork();
++				{
++					if(shp->comsub && !(shp->fdstatus[1]&IONOSEEK))
++					{
++						unpipe = iousepipe(shp);
++						sh_subfork();
++					}
++				}
+ 			}
+ 			no_fork = !ntflag && !(type&(FAMP|FPOU)) && !shp->subshell &&
+ 			    !(shp->st.trapcom[SIGINT] && *shp->st.trapcom[SIGINT]) &&
+@@ -3495,8 +3514,7 @@ static void sh_funct(Shell_t *shp,Namval
+ 	struct funenv fun;
+ 	char *fname = nv_getval(SH_FUNNAMENOD);
+ 	struct Level	*lp =(struct Level*)(SH_LEVELNOD->nvfun);
+-	int		level, pipepid=shp->pipepid, comsub=shp->comsub;
+-	shp->comsub = 0;
++	int		level, pipepid=shp->pipepid;
+ 	shp->pipepid = 0;
+ 	sh_stats(STAT_FUNCT);
+ 	if(!lp->hdr.disc)
+@@ -3539,7 +3557,6 @@ static void sh_funct(Shell_t *shp,Namval
+ 	lp->maxlevel = level;
+ 	SH_LEVELNOD->nvalue.s = lp->maxlevel;
+ 	shp->last_root = nv_dict(DOTSHNOD);
+-	shp->comsub = comsub;
+ #if 0
+ 	nv_putval(SH_FUNNAMENOD,shp->st.funname,NV_NOFREE);
+ #else
+diff -up ksh-20120801/src/cmd/ksh93/sh/macro.c.orig ksh-20120801/src/cmd/ksh93/sh/macro.c
+--- ksh-20120801/src/cmd/ksh93/sh/macro.c.orig	2012-06-29 20:05:47.000000000 +0200
++++ ksh-20120801/src/cmd/ksh93/sh/macro.c	2013-08-12 18:06:17.291843164 +0200
+@@ -2152,6 +2152,11 @@ static void comsubst(Mac_t *mp,register
+ 	mp->ifsp = nv_getval(np);
+ 	stkset(stkp,savptr,savtop);
+ 	newlines = 0;
++	if(type/*==3 - don't break `` vs $() */ && mp->shp->spid)
++	{
++		job_wait(mp->shp->spid);
++		mp->shp->spid = 0;
++	}
+ 	sfsetbuf(sp,(void*)sp,0);
+ 	bufsize = sfvalue(sp);
+ 	/* read command substitution output and put on stack or here-doc */
+diff -up ksh-20120801/src/cmd/ksh93/sh/xec.c.orig ksh-20120801/src/cmd/ksh93/sh/xec.c
+--- ksh-20120801/src/cmd/ksh93/sh/xec.c.orig	2013-08-12 18:06:57.567497226 +0200
++++ ksh-20120801/src/cmd/ksh93/sh/xec.c	2013-08-12 18:20:36.443454280 +0200
+@@ -1734,6 +1734,8 @@ int sh_exec(register const Shnode_t *t,
+ 					nlock--;
+ 					job_unlock();
+ 				}
++				if(shp->subshell)
++					shp->spid = parent;
+ 				if(type&FPCL)
+ 					sh_close(shp->inpipe[0]);
+ 				if(type&(FCOOP|FAMP))
diff --git a/source/ap/ksh93/patches/ksh-20120801-manfix4.patch b/source/ap/ksh93/patches/ksh-20120801-manfix4.patch
new file mode 100644
index 00000000..63554451
--- /dev/null
+++ b/source/ap/ksh93/patches/ksh-20120801-manfix4.patch
@@ -0,0 +1,12 @@
+diff -up ksh-20120801/src/cmd/ksh93/sh.1.manfix4 ksh-20120801/src/cmd/ksh93/sh.1
+--- ksh-20120801/src/cmd/ksh93/sh.1.manfix4	2014-05-22 12:04:51.593750721 +0200
++++ ksh-20120801/src/cmd/ksh93/sh.1	2014-05-22 12:05:32.561556452 +0200
+@@ -4147,7 +4147,7 @@ command are ignored if the command is fo
+ .B &
+ and the
+ .B monitor
+-option is not active.
++option is active.
+ Otherwise, signals have the values
+ inherited by the shell from its parent
+ (but see also
diff --git a/source/ap/ksh93/patches/ksh-20120801-memlik.patch b/source/ap/ksh93/patches/ksh-20120801-memlik.patch
new file mode 100644
index 00000000..31f1eb99
--- /dev/null
+++ b/source/ap/ksh93/patches/ksh-20120801-memlik.patch
@@ -0,0 +1,37 @@
+diff -up ksh-20120801/src/cmd/ksh93/sh/array.c.memlik ksh-20120801/src/cmd/ksh93/sh/array.c
+--- ksh-20120801/src/cmd/ksh93/sh/array.c.memlik	2012-06-07 00:00:42.000000000 +0200
++++ ksh-20120801/src/cmd/ksh93/sh/array.c	2013-06-11 16:52:47.557123973 +0200
+@@ -1701,7 +1701,11 @@ void *nv_associative(register Namval_t *
+ 			ap->header.scope = 0;
+ 		}
+ 		else
+-			dtclose(ap->header.table);
++ 		{
++ 			if((ap->header.nelem&ARRAY_MASK)==0 && (ap->cur=nv_search("0",ap->header.table,0)))
++ 				nv_associative(np,(char*)0,NV_ADELETE);
++ 			dtclose(ap->header.table);
++ 		}
+ 		return((void*)ap);
+ 	    case NV_ANEXT:
+ 		if(!ap->pos)
+diff -up ksh-20120801/src/cmd/ksh93/sh/name.c.memlik ksh-20120801/src/cmd/ksh93/sh/name.c
+--- ksh-20120801/src/cmd/ksh93/sh/name.c.memlik	2012-07-23 18:21:57.000000000 +0200
++++ ksh-20120801/src/cmd/ksh93/sh/name.c	2013-06-11 16:19:41.036648218 +0200
+@@ -2465,6 +2465,8 @@ static void table_unset(Shell_t *shp, re
+ 			}
+ 		}
+ 		npnext = (Namval_t*)dtnext(root,np);
++               if(nv_arrayptr(np))
++                       nv_putsub(np,NIL(char*),ARRAY_SCAN);
+ 		_nv_unset(np,flags);
+ 		nv_delete(np,root,0);
+ 	}
+@@ -3326,7 +3328,7 @@ int nv_rename(register Namval_t *np, int
+ 	shp->last_root = last_root;
+ 	if(flags&NV_MOVE)
+ 	{
+-		if(arraynp && !nv_isattr(np,NV_MINIMAL) && (mp=(Namval_t*)np->nvenv) && (ap=nv_arrayptr(mp)))
++		if(arraynp && !nv_isattr(np,NV_MINIMAL) && (mp=(Namval_t*)np->nvenv) && (ap=nv_arrayptr(mp)) && !ap->fun)
+ 			ap->nelem++;
+ 	}
+ 	if((nv_arrayptr(nr) && !arraynr) || nv_isvtree(nr))
diff --git a/source/ap/ksh93/patches/ksh-20120801-memlik3.patch b/source/ap/ksh93/patches/ksh-20120801-memlik3.patch
new file mode 100644
index 00000000..9df57d2e
--- /dev/null
+++ b/source/ap/ksh93/patches/ksh-20120801-memlik3.patch
@@ -0,0 +1,76 @@
+diff -up ksh-20120801/src/cmd/ksh93/include/name.h.memlik3 ksh-20120801/src/cmd/ksh93/include/name.h
+--- ksh-20120801/src/cmd/ksh93/include/name.h.memlik3	2012-05-10 18:33:41.000000000 +0200
++++ ksh-20120801/src/cmd/ksh93/include/name.h	2014-01-22 14:14:32.774483776 +0100
+@@ -215,7 +215,7 @@ extern Namval_t		*nv_mount(Namval_t*, co
+ extern Namval_t		*nv_arraychild(Namval_t*, Namval_t*, int);
+ extern int		nv_compare(Dt_t*, Void_t*, Void_t*, Dtdisc_t*);
+ extern void		nv_outnode(Namval_t*,Sfio_t*, int, int);
+-extern int		nv_subsaved(Namval_t*);
++extern int		nv_subsaved(Namval_t*,int);
+ extern void		nv_typename(Namval_t*, Sfio_t*);
+ extern void		nv_newtype(Namval_t*);
+ extern int		nv_istable(Namval_t*);
+diff -up ksh-20120801/src/cmd/ksh93/sh/name.c.memlik3 ksh-20120801/src/cmd/ksh93/sh/name.c
+--- ksh-20120801/src/cmd/ksh93/sh/name.c.memlik3	2014-01-22 14:14:32.751483987 +0100
++++ ksh-20120801/src/cmd/ksh93/sh/name.c	2014-01-22 14:14:32.775483767 +0100
+@@ -1297,7 +1297,7 @@ void nv_delete(Namval_t* np, Dt_t *root,
+ 	{
+ 		if(dtdelete(root,np))
+ 		{
+-			if(!(flags&NV_NOFREE) && ((flags&NV_FUNCTION) || !nv_subsaved(np)))
++			if(!(flags&NV_NOFREE) && ((flags&NV_FUNCTION) || !nv_subsaved(np,flags&NV_TABLE)))
+ 				free((void*)np);
+ 		}
+ #if 0
+@@ -2461,14 +2461,14 @@ static void table_unset(Shell_t *shp, re
+ 			{
+ 				_nv_unset(nq,flags);
+ 				npnext = (Namval_t*)dtnext(root,nq);
+-				nv_delete(nq,root,0);
++				nv_delete(nq,root,NV_TABLE);
+ 			}
+ 		}
+ 		npnext = (Namval_t*)dtnext(root,np);
+                if(nv_arrayptr(np))
+                        nv_putsub(np,NIL(char*),ARRAY_SCAN);
+ 		_nv_unset(np,flags);
+-		nv_delete(np,root,0);
++		nv_delete(np,root,NV_TABLE);
+ 	}
+ }
+ 
+diff -up ksh-20120801/src/cmd/ksh93/sh/subshell.c.memlik3 ksh-20120801/src/cmd/ksh93/sh/subshell.c
+--- ksh-20120801/src/cmd/ksh93/sh/subshell.c.memlik3	2014-01-22 14:14:32.768483831 +0100
++++ ksh-20120801/src/cmd/ksh93/sh/subshell.c	2014-01-22 14:20:50.810236676 +0100
+@@ -218,16 +218,28 @@ void sh_subfork(void)
+ 	}
+ }
+ 
+-int nv_subsaved(register Namval_t *np)
++int nv_subsaved(register Namval_t *np,int table)
+ {
+ 	register struct subshell	*sp;
+-	register struct Link		*lp;
++	register struct Link		*lp, *lpprev;
+ 	for(sp = (struct subshell*)subshell_data; sp; sp=sp->prev)
+ 	{
+-		for(lp=sp->svar; lp; lp = lp->next)
++		lpprev = 0;
++		for(lp=sp->svar; lp; lpprev=lp, lp=lp->next)
+ 		{
+ 			if(lp->node==np)
++			{
++				if(table&NV_TABLE)
++				{
++					if(lpprev)
++						lpprev->next = lp->next;
++					else
++						sp->svar = lp->next;
++					free((void*)np);
++					free((void*)lp);
++				}
+ 				return(1);
++			}
+ 		}
+ 	}
+ 	return(0);
diff --git a/source/ap/ksh93/patches/ksh-20120801-mlikfiks.patch b/source/ap/ksh93/patches/ksh-20120801-mlikfiks.patch
new file mode 100644
index 00000000..fbf016ae
--- /dev/null
+++ b/source/ap/ksh93/patches/ksh-20120801-mlikfiks.patch
@@ -0,0 +1,34 @@
+diff -up ksh-20120801/src/cmd/ksh93/sh/lex.c.mlikfiks ksh-20120801/src/cmd/ksh93/sh/lex.c
+--- ksh-20120801/src/cmd/ksh93/sh/lex.c.mlikfiks	2013-07-22 12:45:30.923170264 +0200
++++ ksh-20120801/src/cmd/ksh93/sh/lex.c	2013-07-22 12:46:25.235556905 +0200
+@@ -2465,7 +2465,7 @@ static int alias_exceptf(Sfio_t *iop,int
+ 			if(dp!=handle)
+ 				sfdisc(iop,dp);
+ 		}
+-		else if(type==SF_FINAL)
++		else if(type==SF_DPOP || type==SF_FINAL)
+ 			free((void*)ap);
+ 		goto done;
+ 	}
+diff -up ksh-20120801/src/cmd/ksh93/sh/path.c.mlikfiks ksh-20120801/src/cmd/ksh93/sh/path.c
+--- ksh-20120801/src/cmd/ksh93/sh/path.c.mlikfiks	2013-07-22 12:47:23.149990016 +0200
++++ ksh-20120801/src/cmd/ksh93/sh/path.c	2013-07-22 12:48:33.363283877 +0200
+@@ -613,6 +613,7 @@ static void funload(Shell_t *shp,int fno
+ 		}
+ 		while((rp=dtnext(shp->fpathdict,rp)) && strcmp(pname,rp->fname)==0);
+ 		sh_close(fno);
++		free((void*)pname);
+ 		return;
+ 	}
+ 	sh_onstate(SH_NOLOG);
+diff -up ksh-20120801/src/cmd/ksh93/sh/macro.c.aliasfix ksh-20120801/src/cmd/ksh93/sh/macro.c
+--- ksh-20120801/src/cmd/ksh93/sh/macro.c.aliasfix	2013-07-29 15:03:45.841680475 +0200
++++ ksh-20120801/src/cmd/ksh93/sh/macro.c	2013-07-29 15:04:23.871336821 +0200
+@@ -2085,6 +2085,7 @@ static void comsubst(Mac_t *mp,register
+ 			}
+ 			sfputc(stkp,c);
+ 		}
++		sfputc(stkp,' ');
+ 		c = stktell(stkp);
+ 		str=stkfreeze(stkp,1);
+ 		/* disable verbose and don't save in history file */
diff --git a/source/ap/ksh93/patches/ksh-20120801-mtty.patch b/source/ap/ksh93/patches/ksh-20120801-mtty.patch
new file mode 100644
index 00000000..d992a880
--- /dev/null
+++ b/source/ap/ksh93/patches/ksh-20120801-mtty.patch
@@ -0,0 +1,12 @@
+diff -up ksh-20120801/src/cmd/ksh93/sh/xec.c.mtty ksh-20120801/src/cmd/ksh93/sh/xec.c
+--- ksh-20120801/src/cmd/ksh93/sh/xec.c.mtty	2014-01-22 16:52:06.441608750 +0100
++++ ksh-20120801/src/cmd/ksh93/sh/xec.c	2014-01-22 16:52:06.485608361 +0100
+@@ -3163,7 +3169,7 @@ pid_t _sh_fork(Shell_t *shp,register pid
+ 			 * completed.  Make parent the job group id.
+ 			 */
+ 			if(postid==0)
+-				job.curpgid = parent;
++				job.curpgid = job.jobcontrol?parent:getpid();
+ 			if(job.jobcontrol || (flags&FAMP))
+ 			{
+ 				if(setpgid(parent,job.curpgid)<0 && errno==EPERM)
diff --git a/source/ap/ksh93/patches/ksh-20120801-noexeccdfix.patch b/source/ap/ksh93/patches/ksh-20120801-noexeccdfix.patch
new file mode 100644
index 00000000..47128e09
--- /dev/null
+++ b/source/ap/ksh93/patches/ksh-20120801-noexeccdfix.patch
@@ -0,0 +1,40 @@
+From b8260293a8ed7849a358291faae7b58f4a05dcc9 Mon Sep 17 00:00:00 2001
+From: Kamil Dudka <kdudka@redhat.com>
+Date: Mon, 10 Nov 2014 18:23:34 +0100
+Subject: [PATCH] Resolves: #1160923 - handle failure of fchdir()
+
+... and chdir()
+---
+ src/cmd/ksh93/bltins/cd_pwd.c | 6 ++++--
+ 1 file changed, 4 insertions(+), 2 deletions(-)
+
+diff --git a/src/cmd/ksh93/bltins/cd_pwd.c b/src/cmd/ksh93/bltins/cd_pwd.c
+index a972da6..c20959c 100644
+--- a/src/cmd/ksh93/bltins/cd_pwd.c
++++ b/src/cmd/ksh93/bltins/cd_pwd.c
+@@ -329,18 +329,20 @@ int	b_cd(int argc, char *argv[],Shbltin_t *context)
+ 		if(newdirfd >=0)
+ 		{
+ 			/* chdir for directories on HSM/tapeworms may take minutes */
+-			if(fchdir(newdirfd) >= 0)
++			if((rval=fchdir(newdirfd)) >= 0)
+ 			{
+ 				if(shp->pwdfd >= 0)
+ 					sh_close(shp->pwdfd);
+ 				shp->pwdfd=newdirfd;
+ 				goto success;
+ 			}
++			else
++				sh_close(newdirfd);
+ 		}
+ #ifndef O_SEARCH
+ 		else
+ 		{
+-			if(chdir(dir) >=0)
++			if((rval=chdir(dir)) >=0)
+ 			{
+ 				if(shp->pwdfd >= 0)
+ 				{
+-- 
+2.1.0
+
diff --git a/source/ap/ksh93/patches/ksh-20120801-nohupfork.patch b/source/ap/ksh93/patches/ksh-20120801-nohupfork.patch
new file mode 100644
index 00000000..20cdeb90
--- /dev/null
+++ b/source/ap/ksh93/patches/ksh-20120801-nohupfork.patch
@@ -0,0 +1,11 @@
+diff -up ksh-20120801/src/cmd/ksh93/sh/xec.c.nohupfork ksh-20120801/src/cmd/ksh93/sh/xec.c
+--- ksh-20120801/src/cmd/ksh93/sh/xec.c.nohupfork	2015-08-27 14:25:38.925378019 +0200
++++ ksh-20120801/src/cmd/ksh93/sh/xec.c	2015-08-27 14:30:42.267058087 +0200
+@@ -2067,6 +2067,7 @@ int sh_exec(register const Shnode_t *t,
+ 				{
+ 					sh_exec(t->par.partre,flags);
+ 					shp->st.trapcom[0]=0;
++					sh_offoption(SH_INTERACTIVE);
+ 					sh_done(shp,0);
+ 				}
+ 			}
diff --git a/source/ap/ksh93/patches/ksh-20120801-nomulti.patch b/source/ap/ksh93/patches/ksh-20120801-nomulti.patch
new file mode 100644
index 00000000..5d7e7a4e
--- /dev/null
+++ b/source/ap/ksh93/patches/ksh-20120801-nomulti.patch
@@ -0,0 +1,11 @@
+diff -up ksh-20120801/src/cmd/ksh93/sh/init.c.nomulti ksh-20120801/src/cmd/ksh93/sh/init.c
+--- ksh-20120801/src/cmd/ksh93/sh/init.c.nomulti	2013-10-08 20:46:46.202471042 +0200
++++ ksh-20120801/src/cmd/ksh93/sh/init.c	2013-10-08 20:46:57.912331483 +0200
+@@ -1446,7 +1446,6 @@ Shell_t *sh_init(register int argc,regis
+ #endif /* SHOPT_TIMEOUT */
+ 	/* initialize jobs table */
+ 	job_clear();
+-	sh_onoption(SH_MULTILINE);
+ 	if(argc>0)
+ 	{
+ 		/* check for restricted shell */
diff --git a/source/ap/ksh93/patches/ksh-20120801-oldenvinit.patch b/source/ap/ksh93/patches/ksh-20120801-oldenvinit.patch
new file mode 100644
index 00000000..8ee08631
--- /dev/null
+++ b/source/ap/ksh93/patches/ksh-20120801-oldenvinit.patch
@@ -0,0 +1,95 @@
+diff -up ksh-20120801/src/cmd/ksh93/sh/init.c.fixset ksh-20120801/src/cmd/ksh93/sh/init.c
+--- ksh-20120801/src/cmd/ksh93/sh/init.c.fixset	2014-11-03 15:45:36.510997271 +0100
++++ ksh-20120801/src/cmd/ksh93/sh/init.c	2014-11-03 16:20:44.398917280 +0100
+@@ -2003,8 +2003,91 @@ static Dt_t *inittree(Shell_t *shp,const
+  * skip over items that are not name-value pairs
+  */
+ 
++
+ static void env_init(Shell_t *shp)
+ {
++	register char *cp;
++	register Namval_t	*np;
++	register char **ep=environ;
++	register char *next=0;
++#ifdef _ENV_H
++	shp->env = env_open(environ,3);
++	env_delete(shp->env,"_");
++#endif
++	if(ep)
++	{
++		while(cp= *ep++)
++		{
++			if(*cp=='A' && cp[1]=='_' && cp[2]=='_' && cp[3]=='z' && cp[4]=='=')
++				next = cp+4;
++			else if(np=nv_open(cp,shp->var_tree,(NV_EXPORT|NV_IDENT|NV_ASSIGN|NV_NOFAIL))) 
++			{
++				nv_onattr(np,NV_IMPORT);
++				np->nvenv = cp;
++				nv_close(np);
++			}
++			else  /* swap with front */
++			{
++				ep[-1] = environ[shp->nenv];
++				environ[shp->nenv++] = cp;
++			}
++		}
++		while(cp=next)
++		{
++			if(next = strchr(++cp,'='))
++				*next = 0;
++			np = nv_search(cp+2,shp->var_tree,NV_ADD);
++			if(np!=SHLVL && nv_isattr(np,NV_IMPORT|NV_EXPORT))
++			{
++				int flag = *(unsigned char*)cp-' ';
++				int size = *(unsigned char*)(cp+1)-' ';
++				if((flag&NV_INTEGER) && size==0)
++				{
++					/* check for floating*/
++					char *ep,*val = nv_getval(np);
++					strtol(val,&ep,10);
++					if(*ep=='.' || *ep=='e' || *ep=='E')
++					{
++						char *lp;
++						flag |= NV_DOUBLE;
++						if(*ep=='.')
++						{
++							strtol(ep+1,&lp,10);
++							if(*lp)
++								ep = lp;
++						}
++						if(*ep && *ep!='.')
++						{
++							flag |= NV_EXPNOTE;
++							size = ep-val;
++						}
++						else
++							size = strlen(ep);
++						size--;
++					}
++				}
++				nv_newattr(np,flag|NV_IMPORT|NV_EXPORT,size);
++			}
++			else
++				cp += 2;
++		}
++	}
++#ifdef _ENV_H
++	env_delete(shp->env,e_envmarker);
++#endif
++	if(nv_isnull(PWDNOD) || nv_isattr(PWDNOD,NV_TAGGED))
++	{
++		nv_offattr(PWDNOD,NV_TAGGED);
++		path_pwd(shp,0);
++	}
++	if((cp = nv_getval(SHELLNOD)) && (sh_type(cp)&SH_TYPE_RESTRICTED))
++		sh_onoption(SH_RESTRICTED); /* restricted shell */
++	return;
++}
++
++
++static void env_init_backup(Shell_t *shp)
++{
+ 	register char		*cp;
+ 	register Namval_t	*np,*mp;
+ 	register char		**ep=environ;
diff --git a/source/ap/ksh93/patches/ksh-20120801-retfix.patch b/source/ap/ksh93/patches/ksh-20120801-retfix.patch
new file mode 100644
index 00000000..bcb5b332
--- /dev/null
+++ b/source/ap/ksh93/patches/ksh-20120801-retfix.patch
@@ -0,0 +1,20 @@
+diff -up ksh-20120801/src/cmd/ksh93/sh/subshell.c.retfix ksh-20120801/src/cmd/ksh93/sh/subshell.c
+--- ksh-20120801/src/cmd/ksh93/sh/subshell.c.retfix	2014-09-01 13:50:02.956085721 +0200
++++ ksh-20120801/src/cmd/ksh93/sh/subshell.c	2014-09-01 13:54:01.104818416 +0200
+@@ -652,6 +652,16 @@ Sfio_t *sh_subshell(Shell_t *shp,Shnode_
+ 		}
+ 		else
+ 		{
++			if(comsub!=1 && shp->spid)
++			{
++				int c = shp->exitval;
++				job_wait(shp->spid);
++				shp->exitval = c;
++				exitset();
++				if(shp->pipepid==shp->spid)
++					shp->spid = 0;
++				shp->pipepid = 0;
++			}
+ 			job.hack1_waitall=0;
+ 			/* move tmp file to iop and restore sfstdout */
+ 			iop = sfswap(sfstdout,NIL(Sfio_t*));
diff --git a/source/ap/ksh93/patches/rmdirfix.patch b/source/ap/ksh93/patches/ksh-20120801-rmdirfix.patch
index 132de7db..ae9dfd72 100644
--- a/source/ap/ksh93/patches/rmdirfix.patch
+++ b/source/ap/ksh93/patches/ksh-20120801-rmdirfix.patch
@@ -69,7 +69,7 @@ diff -up ksh20120801/src/cmd/ksh93/sh/subshell.c.orig ksh20120801/src/cmd/ksh93/
 -				sp->pwdfd = n;
 -				if(n<10)
 -				{
--					sp->pwdfd =  fcntl(n,F_DUPFD,10);
+-					sp->pwdfd = sh_fcntl(n,F_DUPFD,10);
 -					close(n);
 -				}
 -				if(sp->pwdfd>0)
diff --git a/source/ap/ksh93/patches/ksh-20120801-roundit.patch b/source/ap/ksh93/patches/ksh-20120801-roundit.patch
new file mode 100644
index 00000000..015bc85c
--- /dev/null
+++ b/source/ap/ksh93/patches/ksh-20120801-roundit.patch
@@ -0,0 +1,12 @@
+diff -up ksh-20120801/src/lib/libast/sfio/sfcvt.c.rounditgood ksh-20120801/src/lib/libast/sfio/sfcvt.c
+--- ksh-20120801/src/lib/libast/sfio/sfcvt.c.rounditgood	2014-02-27 16:45:54.630161032 +0100
++++ ksh-20120801/src/lib/libast/sfio/sfcvt.c	2014-02-27 16:45:54.658161205 +0100
+@@ -491,7 +491,7 @@ int		format;		/* conversion format		*/
+ 				*decpt += 1;
+ 				if(!(format&SFFMT_EFORMAT))
+ 				{	/* add one more 0 for %f precision */
+-					ep[-1] = '0';
++					if(ep-sp>1) ep[-1] = '0';
+ 					ep += 1;
+ 				}
+ 			}
diff --git a/source/ap/ksh93/patches/ksh-20120801-sufix.patch b/source/ap/ksh93/patches/ksh-20120801-sufix.patch
new file mode 100644
index 00000000..b820e1cf
--- /dev/null
+++ b/source/ap/ksh93/patches/ksh-20120801-sufix.patch
@@ -0,0 +1,11 @@
+diff -up ksh-20120801/src/cmd/ksh93/sh/io.c.sufix ksh-20120801/src/cmd/ksh93/sh/io.c
+--- ksh-20120801/src/cmd/ksh93/sh/io.c.sufix	2014-04-08 14:30:14.412343555 +0200
++++ ksh-20120801/src/cmd/ksh93/sh/io.c	2014-04-08 14:31:18.403876587 +0200
+@@ -2144,6 +2144,7 @@ static int	io_prompt(Shell_t *shp,Sfio_t
+ 			}
+ #endif	/* TIOCLBIC */
+ 			cp = sh_mactry(shp,nv_getval(sh_scoped(shp,PS1NOD)));
++			shp->exitval = 0;
+ 			for(;c= *cp;cp++)
+ 			{
+ 				if(c==HIST_CHAR)
diff --git a/source/ap/ksh93/patches/ksh-20120801-tpstl.patch b/source/ap/ksh93/patches/ksh-20120801-tpstl.patch
new file mode 100644
index 00000000..41e17c87
--- /dev/null
+++ b/source/ap/ksh93/patches/ksh-20120801-tpstl.patch
@@ -0,0 +1,12 @@
+diff -up ksh-20120801/src/cmd/ksh93/sh/init.c.tpstl ksh-20120801/src/cmd/ksh93/sh/init.c
+--- ksh-20120801/src/cmd/ksh93/sh/init.c.tpstl	2014-04-03 11:21:25.395547276 +0200
++++ ksh-20120801/src/cmd/ksh93/sh/init.c	2014-04-03 11:26:03.908867208 +0200
+@@ -332,7 +332,7 @@ static Namfun_t *clone_optindex(Namval_t
+ /* Trap for restricted variables FPATH, PATH, SHELL, ENV */
+ static void put_restricted(register Namval_t* np,const char *val,int flags,Namfun_t *fp)
+ {
+-	Shell_t *shp = nv_shell(np);
++	Shell_t *shp = sh_getinterp();
+ 	int	path_scoped = 0, fpath_scoped=0;
+ 	Pathcomp_t *pp;
+ 	char *name = nv_name(np);
diff --git a/source/ap/ksh93/patches/ksh-20120801-trapcom.patch b/source/ap/ksh93/patches/ksh-20120801-trapcom.patch
new file mode 100644
index 00000000..a900b543
--- /dev/null
+++ b/source/ap/ksh93/patches/ksh-20120801-trapcom.patch
@@ -0,0 +1,47 @@
+diff -up ksh-20120801/src/cmd/ksh93/sh/subshell.c.orig ksh-20120801/src/cmd/ksh93/sh/subshell.c
+--- ksh-20120801/src/cmd/ksh93/sh/subshell.c.orig	2014-08-23 20:20:24.676186573 -0300
++++ ksh-20120801/src/cmd/ksh93/sh/subshell.c	2014-08-23 20:29:00.772151283 -0300
+@@ -481,12 +481,12 @@ Sfio_t *sh_subshell(Shell_t *shp,Shnode_
+ {
+ 	struct subshell sub_data;
+ 	register struct subshell *sp = &sub_data;
+-	int jmpval,nsig=0,duped=0;
++	int jmpval,isig,nsig=0,duped=0;
+ 	long savecurenv = shp->curenv;
+ 	int savejobpgid = job.curpgid;
+ 	int *saveexitval = job.exitval;
+ 	int16_t subshell;
+-	char *savsig;
++	char **savsig;
+ 	Sfio_t *iop=0;
+ 	struct checkpt buff;
+ 	struct sh_scoped savst;
+@@ -561,10 +561,13 @@ Sfio_t *sh_subshell(Shell_t *shp,Shnode_
+ 		/* save trap table */
+ 		shp->st.otrapcom = 0;
+ 		shp->st.otrap = savst.trap;
+-		if((nsig=shp->st.trapmax*sizeof(char*))>0 || shp->st.trapcom[0])
++		if((nsig=shp->st.trapmax)>0 || shp->st.trapcom[0])
+ 		{
+-			nsig += sizeof(char*);
+-			memcpy(savsig=malloc(nsig),(char*)&shp->st.trapcom[0],nsig);
++			++nsig;
++			savsig = malloc(nsig * sizeof(char*));
++			/* contents of shp->st.st.trapcom may change */
++			for (isig = 0; isig < nsig; ++isig)
++				savsig[isig] = shp->st.trapcom[isig] ? strdup(shp->st.trapcom[isig]) : NULL;
+ 			/* this nonsense needed for $(trap) */
+ 			shp->st.otrapcom = (char**)savsig;
+ 		}
+@@ -729,7 +732,10 @@ Sfio_t *sh_subshell(Shell_t *shp,Shnode_
+ 		shp->st.otrap = 0;
+ 		if(nsig)
+ 		{
+-			memcpy((char*)&shp->st.trapcom[0],savsig,nsig);
++			for (isig = 0; isig < nsig; ++isig)
++				if (shp->st.trapcom[isig])
++					free(shp->st.trapcom[isig]);
++			memcpy((char*)&shp->st.trapcom[0],savsig,nsig*sizeof(char*));
+ 			free((void*)savsig);
+ 		}
+ 		shp->options = sp->options;
diff --git a/source/ap/ksh93/patches/ksh-20120801-xufix.patch b/source/ap/ksh93/patches/ksh-20120801-xufix.patch
new file mode 100644
index 00000000..496e0bf7
--- /dev/null
+++ b/source/ap/ksh93/patches/ksh-20120801-xufix.patch
@@ -0,0 +1,29 @@
+diff -up ksh-20120801/src/cmd/ksh93/bltins/typeset.c.xufix ksh-20120801/src/cmd/ksh93/bltins/typeset.c
+--- ksh-20120801/src/cmd/ksh93/bltins/typeset.c.xufix	2015-02-03 14:47:23.266022137 +0100
++++ ksh-20120801/src/cmd/ksh93/bltins/typeset.c	2015-02-03 14:47:23.308022046 +0100
+@@ -93,6 +93,8 @@ int    b_readonly(int argc,char *argv[],
+ 	memset((void*)&tdata,0,sizeof(tdata));
+ 	tdata.sh = context->shp;
+ 	tdata.aflag = '-';
++	/* do not change size */
++	tdata.argnum = -1;
+ 	while((flag = optget(argv,*command=='e'?sh_optexport:sh_optreadonly))) switch(flag)
+ 	{
+ 		case 'p':
+diff -up ksh-20120801/src/cmd/ksh93/sh/name.c.xufix ksh-20120801/src/cmd/ksh93/sh/name.c
+--- ksh-20120801/src/cmd/ksh93/sh/name.c.xufix	2015-02-03 14:47:23.281022105 +0100
++++ ksh-20120801/src/cmd/ksh93/sh/name.c	2015-02-03 14:52:08.768404194 +0100
+@@ -3019,10 +3019,12 @@ void nv_newattr (register Namval_t *np,
+ 			nv_onattr(np,NV_EXPORT);
+ 			sh_envput(shp->env,np);
+ 		}
+-		if((n^newatts)==NV_EXPORT)
++		if((n^newatts)==NV_EXPORT && size==-1)
+ 			return;
+ 	}
+ 	oldsize = nv_size(np);
++	if (size == -1)
++		size = oldsize;
+ 	if((size==oldsize|| (n&NV_INTEGER)) && !trans && ((n^newatts)&~NV_NOCHANGE)==0)
+ 	{
+ 		if(size)
diff --git a/source/ap/ksh93/patches/ksh-20130613-cdfix4.patch b/source/ap/ksh93/patches/ksh-20130613-cdfix4.patch
new file mode 100644
index 00000000..5b290175
--- /dev/null
+++ b/source/ap/ksh93/patches/ksh-20130613-cdfix4.patch
@@ -0,0 +1,15 @@
+diff -up ksh-20120801/src/cmd/ksh93/bltins/cd_pwd.c.cdfix4 ksh-20120801/src/cmd/ksh93/bltins/cd_pwd.c
+--- ksh-20120801/src/cmd/ksh93/bltins/cd_pwd.c.cdfix4	2014-08-26 15:24:57.276953822 +0200
++++ ksh-20120801/src/cmd/ksh93/bltins/cd_pwd.c	2014-08-26 15:25:34.738770361 +0200
+@@ -143,9 +143,9 @@ int sh_diropenat(Shell_t *shp, int dir,
+ 	}
+ 
+ 	/* Move fd to a number > 10 and *register* the fd number with the shell */
+-	shfd = sh_fcntl(fd, F_dupfd_cloexec, 10);
++	shfd = fcntl(fd, F_dupfd_cloexec, 10);
+ 	savederrno=errno;
+-	sh_close(fd);
++	close(fd);
+ 	errno=savederrno;
+ 	return(shfd);
+ }
diff --git a/source/ap/ksh93/patches/ksh-20130628-longer.patch b/source/ap/ksh93/patches/ksh-20130628-longer.patch
new file mode 100644
index 00000000..4761a347
--- /dev/null
+++ b/source/ap/ksh93/patches/ksh-20130628-longer.patch
@@ -0,0 +1,58 @@
+diff -up ksh-20120801/src/cmd/ksh93/include/defs.h.longer ksh-20120801/src/cmd/ksh93/include/defs.h
+--- ksh-20120801/src/cmd/ksh93/include/defs.h.longer	2012-06-25 20:47:47.000000000 +0200
++++ ksh-20120801/src/cmd/ksh93/include/defs.h	2013-07-08 17:33:42.238534376 +0200
+@@ -162,8 +162,8 @@ struct shared
+ 	Namval_t	*prev_table;	/* previous table used in nv_open  */ \
+ 	Sfio_t		*outpool;	/* ouput stream pool */ \
+ 	long		timeout;	/* read timeout */ \
+-	short		curenv;		/* current subshell number */ \
+-	short		jobenv;		/* subshell number for jobs */ \
++	long		curenv;		/* current subshell number */ \
++	long		jobenv;		/* subshell number for jobs */ \
+ 	int		infd;		/* input file descriptor */ \
+ 	short		nextprompt;	/* next prompt is PS<nextprompt> */ \
+ 	short		poolfiles; \
+diff -up ksh-20120801/src/cmd/ksh93/include/jobs.h.longer ksh-20120801/src/cmd/ksh93/include/jobs.h
+--- ksh-20120801/src/cmd/ksh93/include/jobs.h.longer	2011-12-19 13:36:37.000000000 +0100
++++ ksh-20120801/src/cmd/ksh93/include/jobs.h	2013-07-08 17:32:52.881124147 +0200
+@@ -87,7 +87,7 @@ struct process
+ 	unsigned short	p_exit;		/* exit value or signal number */
+ 	unsigned short	p_exitmin;	/* minimum exit value for xargs */
+ 	unsigned short	p_flag;		/* flags - see below */
+-	int		p_env;		/* subshell environment number */
++	long		p_env;		/* subshell environment number */
+ #ifdef JOBS
+ 	off_t		p_name;		/* history file offset for command */
+ 	struct termios	p_stty;		/* terminal state for job */
+diff -up ksh-20120801/src/cmd/ksh93/sh/jobs.c.longer ksh-20120801/src/cmd/ksh93/sh/jobs.c
+diff -up ksh-20120801/src/cmd/ksh93/sh/subshell.c.longer ksh-20120801/src/cmd/ksh93/sh/subshell.c
+--- ksh-20120801/src/cmd/ksh93/sh/subshell.c.longer	2013-07-08 17:32:52.874124090 +0200
++++ ksh-20120801/src/cmd/ksh93/sh/subshell.c	2013-07-08 17:32:52.882124156 +0200
+@@ -98,7 +98,7 @@ static struct subshell
+ #endif /* SHOPT_COSHELL */
+ } *subshell_data;
+ 
+-static int subenv;
++static long subenv;
+ 
+ 
+ /*
+@@ -171,7 +171,8 @@ void sh_subfork(void)
+ {
+ 	register struct subshell *sp = subshell_data;
+ 	Shell_t	*shp = sp->shp;
+-	int	curenv = shp->curenv, comsub=shp->comsub;
++	long	curenv = shp->curenv;
++	int	comsub=shp->comsub;
+ 	pid_t pid;
+ 	char *trap = shp->st.trapcom[0];
+ 	if(trap)
+@@ -461,7 +462,7 @@ Sfio_t *sh_subshell(Shell_t *shp,Shnode_
+ 	struct subshell sub_data;
+ 	register struct subshell *sp = &sub_data;
+ 	int jmpval,nsig=0,duped=0;
+-	int savecurenv = shp->curenv;
++	long savecurenv = shp->curenv;
+ 	int savejobpgid = job.curpgid;
+ 	int *saveexitval = job.exitval;
+ 	int16_t subshell;
diff --git a/source/ap/ksh93/patches/ksh-20140301-fikspand.patch b/source/ap/ksh93/patches/ksh-20140301-fikspand.patch
new file mode 100644
index 00000000..9899392f
--- /dev/null
+++ b/source/ap/ksh93/patches/ksh-20140301-fikspand.patch
@@ -0,0 +1,12 @@
+diff -up ksh-20120801/src/cmd/ksh93/sh/expand.c.fikspand ksh-20120801/src/cmd/ksh93/sh/expand.c
+--- ksh-20120801/src/cmd/ksh93/sh/expand.c.fikspand	2010-11-24 05:46:30.000000000 +0100
++++ ksh-20120801/src/cmd/ksh93/sh/expand.c	2014-05-22 12:55:46.252717371 +0200
+@@ -278,6 +278,8 @@ int path_generate(Shell_t *shp,struct ar
+ 	char comma, range=0;
+ 	int first, last, incr, count = 0;
+ 	char tmp[32], end[1];
++	if(!sh_isoption(SH_BRACEEXPAND))
++		return path_expand(shp,todo->argval,arghead);
+ 	todo->argchn.ap = 0;
+ again:
+ 	apin = ap = todo;
diff --git a/source/ap/ksh93/patches/ksh-20140415-hokaido.patch b/source/ap/ksh93/patches/ksh-20140415-hokaido.patch
new file mode 100644
index 00000000..5ff69279
--- /dev/null
+++ b/source/ap/ksh93/patches/ksh-20140415-hokaido.patch
@@ -0,0 +1,37 @@
+diff -up ksh-20120801/src/cmd/ksh93/sh/xec.c.hokaido ksh-20120801/src/cmd/ksh93/sh/xec.c
+--- ksh-20120801/src/cmd/ksh93/sh/xec.c.hokaido	2014-09-18 14:41:57.696756230 +0200
++++ ksh-20120801/src/cmd/ksh93/sh/xec.c	2014-09-18 14:43:55.439205247 +0200
+@@ -1633,12 +1633,20 @@ int sh_exec(register const Shnode_t *t,
+ #endif /* SHOPT_COSHELL */
+ 			if(shp->subshell)
+ 			{
++				int comsubsave = shp->comsub;
++				if(comsubsave==1)
++					shp->comsub = 2;
+ 				sh_subtmpfile(shp);
++				shp->comsub = comsubsave;
++				if(shp->comsub==1 && (!(shp->fdstatus[1]&IONOSEEK)))
++					unpipe = iousepipe(shp);
++
+ 				if((type&(FAMP|TFORK))==(FAMP|TFORK))
+ 				{
+ 					if(shp->comsub && !(shp->fdstatus[1]&IONOSEEK))
+ 					{
+-						unpipe = iousepipe(shp);
++						if (!unpipe)
++							unpipe = iousepipe(shp);
+ 						sh_subfork();
+ 					}
+ 				}
+@@ -2107,7 +2115,11 @@ int sh_exec(register const Shnode_t *t,
+ 			job.curjobid = 0;
+ 			if(shp->subshell)
+ 			{
++				int comsubsave = shp->comsub;
++				if(comsubsave==1)
++					shp->comsub = 2;
+ 				sh_subtmpfile(shp);
++				shp->comsub = comsubsave;
+ 				if(shp->comsub==1 && !(shp->fdstatus[1]&IONOSEEK))
+ 					iousepipe(shp);
+ 			}
diff --git a/source/ap/ksh93/patches/ksh-20140801-arraylen.patch b/source/ap/ksh93/patches/ksh-20140801-arraylen.patch
new file mode 100644
index 00000000..34c9b6bd
--- /dev/null
+++ b/source/ap/ksh93/patches/ksh-20140801-arraylen.patch
@@ -0,0 +1,11 @@
+--- ksh-20120801/src/cmd/ksh93/sh/xec.c	2015-04-02 10:55:26.228017873 -0400
++++ ksh-20120801/src/cmd/ksh93/sh/xec.c	2015-04-02 10:56:04.099017700 -0400
+@@ -1234,7 +1234,7 @@ int sh_exec(register const Shnode_t *t, 
+ 			if((io||argn))
+ 			{
+ 				Shbltin_t *bp=0;
+-				static char *argv[1];
++				static char *argv[2];
+ 				int tflags = 1;
+ 				if(np &&  nv_isattr(np,BLT_DCL))
+ 					tflags |= 2;
diff --git a/source/ap/ksh93/patches/ksh-20140929-safefd.patch b/source/ap/ksh93/patches/ksh-20140929-safefd.patch
new file mode 100644
index 00000000..80db2052
--- /dev/null
+++ b/source/ap/ksh93/patches/ksh-20140929-safefd.patch
@@ -0,0 +1,52 @@
+diff -up ksh-20120801/src/cmd/ksh93/include/io.h.safefd ksh-20120801/src/cmd/ksh93/include/io.h
+--- ksh-20120801/src/cmd/ksh93/include/io.h.safefd	2015-03-03 18:21:40.544732158 +0100
++++ ksh-20120801/src/cmd/ksh93/include/io.h	2015-03-03 18:22:16.284447849 +0100
+@@ -78,6 +78,7 @@ extern void 	sh_iorestore(Shell_t*,int,i
+ extern Sfio_t 	*sh_iostream(Shell_t*,int);
+ extern int	sh_redirect(Shell_t*,struct ionod*,int);
+ extern void 	sh_iosave(Shell_t *, int,int,char*);
++extern int 	safefdnumber(Shell_t* shp, int sfd);
+ extern int 	sh_iovalidfd(Shell_t*, int);
+ extern int 	sh_inuse(Shell_t*, int);
+ extern void 	sh_iounsave(Shell_t*);
+diff -up ksh-20120801/src/cmd/ksh93/sh/io.c.safefd ksh-20120801/src/cmd/ksh93/sh/io.c
+--- ksh-20120801/src/cmd/ksh93/sh/io.c.safefd	2015-03-03 18:21:40.511732421 +0100
++++ ksh-20120801/src/cmd/ksh93/sh/io.c	2015-03-03 18:21:40.544732158 +0100
+@@ -1724,6 +1724,25 @@ void sh_iosave(Shell_t *shp, register in
+ 	}
+ }
+ 
++int safefdnumber(Shell_t* shp, int sfd)
++{
++	register int fd;
++
++	while(1)
++	{
++		for(fd=0; fd < shp->topfd; fd++)
++		{
++			if (filemap[fd].save_fd==sfd || filemap[fd].orig_fd==sfd || (fcntl(sfd, F_GETFD) != -1 || errno != EBADF))
++			{
++				sfd++;
++				continue;
++			}
++		}
++		break;
++	}
++	return sfd;
++}
++
+ /*
+  *  close all saved file descriptors
+  */
+diff -up ksh-20120801/src/cmd/ksh93/sh/subshell.c.safefd ksh-20120801/src/cmd/ksh93/sh/subshell.c
+--- ksh-20120801/src/cmd/ksh93/sh/subshell.c.safefd	2015-03-03 18:21:40.531732261 +0100
++++ ksh-20120801/src/cmd/ksh93/sh/subshell.c	2015-03-03 18:21:40.544732158 +0100
+@@ -673,7 +673,7 @@ Sfio_t *sh_subshell(Shell_t *shp,Shnode_
+ 			}
+ 			if(iop && sffileno(iop)==1)
+ 			{
+-				int fd=sfsetfd(iop,3);
++				int fd=sfsetfd(iop,safefdnumber(shp,3));
+ 				if(fd<0)
+ 				{
+ 					shp->toomany = 1;