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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))
|
