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ksh/ksh93-fdstatus.dif

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| Fix for bnc#814135, bnc#808449, bnc#835885, and bnc#844071
| - crash in bestreclaim() after traversing a memory block with a very large size (ksh)
| - set -k does not work properly with ksh-93t-13.17 and higher
| - Problem after update of ksh from ksh-93u-0.14.1 to ksh-93u-0.22.1
| - Regression: Fix crash in sfio code of libast
| This is a backport from the beta version ksh93v-2013-10-10
--- src/cmd/ksh93/bltins/enum.c
+++ src/cmd/ksh93/bltins/enum.c 2013-10-25 13:26:45.739248213 +0000
@@ -266,7 +266,9 @@ int b_enum(int argc, char** argv, Shblti
optdisc.opt.infof = enuminfo;
optdisc.np = tp;
nv_addtype(tp, enum_type, &optdisc.opt, sizeof(optdisc));
+ nv_onattr(np,NV_LTOU|NV_UTOL);
}
+ nv_open(0,shp->var_tree,0);
return error_info.errors != 0;
}
--- src/cmd/ksh93/bltins/read.c
+++ src/cmd/ksh93/bltins/read.c 2013-10-25 13:26:45.740248120 +0000
@@ -280,24 +280,25 @@ int sh_readline(register Shell_t *shp,ch
if(size || (flags>>D_FLAG)) /* delimiter not new-line or fixed size read */
{
if((shp->fdstatus[fd]&IOTTY) && !keytrap)
- tty_raw(fd,1);
+ tty_raw(sffileno(iop),1);
if(!(flags&(N_FLAG|NN_FLAG)))
{
delim = ((unsigned)flags)>>D_FLAG;
ep->e_nttyparm.c_cc[VEOL] = delim;
ep->e_nttyparm.c_lflag |= ISIG;
- tty_set(fd,TCSADRAIN,&ep->e_nttyparm);
+ tty_set(sffileno(iop),TCSADRAIN,&ep->e_nttyparm);
}
#if defined(__linux__)
else if ((shp->fdstatus[fd]&(IOTTY|IONOSEEK))==0)
{
struct stat st;
- if ((fstat(fd, &st) == 0) && S_ISFIFO(st.st_mode))
+ int fn = sffileno(iop);
+ if ((fstat(fn, &st) == 0) && S_ISFIFO(st.st_mode))
{
int fdflg;
- if (((fdflg = fcntl(fd, F_GETFL)) != -1) && !(fdflg & O_NONBLOCK))
- fcntl(fd, F_SETFL, fdflg|O_NONBLOCK);
- shp->fdstatus[fd] |= IONOSEEK;
+ if (((fdflg = fcntl(fn, F_GETFL)) != -1) && !(fdflg & O_NONBLOCK))
+ fcntl(fn, F_SETFL, fdflg|O_NONBLOCK);
+ shp->fdstatus[fn] |= IONOSEEK;
}
}
#endif
@@ -342,7 +343,7 @@ int sh_readline(register Shell_t *shp,ch
size = nv_size(np);
}
was_write = (sfset(iop,SF_WRITE,0)&SF_WRITE)!=0;
- if(fd==0)
+ if(sffileno(iop)==0)
was_share = (sfset(iop,SF_SHARE,shp->redir0!=2)&SF_SHARE)!=0;
if(timeout || (shp->fdstatus[fd]&(IOTTY|IONOSEEK)))
{
@@ -366,7 +367,7 @@ int sh_readline(register Shell_t *shp,ch
else
end = var + sizeof(buf) - 1;
up = cur = var;
- if((sfset(iop,SF_SHARE,1)&SF_SHARE) && fd!=0)
+ if((sfset(iop,SF_SHARE,1)&SF_SHARE) && sffileno(iop)!=0)
was_share = 1;
if(size==0)
{
@@ -473,7 +474,7 @@ int sh_readline(register Shell_t *shp,ch
timerdel(timeslot);
if(binary && !((size=nv_size(np)) && nv_isarray(np) && c!=size))
{
- if((c==size) && np->nvalue.cp && !nv_isarray(np))
+ if((c==size) && np->nvalue.cp && !nv_isarray(np) && !np->nvfun)
memcpy((char*)np->nvalue.cp,var,c);
else
{
@@ -819,7 +820,7 @@ done:
sfset(iop,SF_SHARE,0);
nv_close(np);
if((shp->fdstatus[fd]&IOTTY) && !keytrap)
- tty_cooked(fd);
+ tty_cooked(sffileno(iop));
if(flags&S_FLAG)
hist_flush(shp->gd->hist_ptr);
if(jmpval > 1)
--- src/cmd/ksh93/bltins/trap.c
+++ src/cmd/ksh93/bltins/trap.c 2013-10-25 13:26:45.740248120 +0000
@@ -116,8 +116,7 @@ int b_trap(int argc,char *argv[],Shbltin
continue;
}
shp->st.otrap = 0;
- if(shp->st.trap[sig])
- free(shp->st.trap[sig]);
+ arg = shp->st.trap[sig];
shp->st.trap[sig] = 0;
if(!clear && *action)
shp->st.trap[sig] = strdup(action);
@@ -128,6 +127,8 @@ int b_trap(int argc,char *argv[],Shbltin
else
shp->trapnote = 0;
}
+ if(arg)
+ free(arg);
continue;
}
if(sig>shp->gd->sigmax)
--- src/cmd/ksh93/bltins/typeset.c
+++ src/cmd/ksh93/bltins/typeset.c 2013-10-25 13:26:45.741248028 +0000
@@ -676,7 +676,7 @@ static int setall(char **argv,regist
}
if(!nv_isarray(np) && !strchr(name,'=') && !(shp->envlist && nv_onlist(shp->envlist,name)))
{
- if(comvar || (shp->last_root==shp->var_tree && (tp->tp || (!shp->st.real_fun && (nvflags&NV_STATIC)) || (!(flag&(NV_EXPORT|NV_RDONLY)) && nv_isattr(np,(NV_EXPORT|NV_IMPORT))==(NV_EXPORT|NV_IMPORT)))))
+ if(comvar || (shp->last_root==shp->var_tree && ((tp->tp && tp->tp!=nv_type(np)) || (!shp->st.real_fun && (nvflags&NV_STATIC)) || (!(flag&(NV_EXPORT|NV_RDONLY)) && nv_isattr(np,(NV_EXPORT|NV_IMPORT))==(NV_EXPORT|NV_IMPORT)))))
{
if((flag&(NV_HOST|NV_INTEGER))!=NV_HOST)
_nv_unset(np,0);
--- src/cmd/ksh93/include/defs.h
+++ src/cmd/ksh93/include/defs.h 2013-10-25 13:26:45.741248028 +0000
@@ -182,6 +182,8 @@ struct shared
pid_t spid; /* subshell process id */ \
pid_t pipepid; \
pid_t outpipepid; \
+ pid_t *procsub; /* pids for >() argument */ \
+ int nprocsub; /* number of pids in procsub */ \
int topfd; \
int savesig; \
unsigned char *sigflag; /* pointer to signal states */ \
@@ -243,7 +245,7 @@ struct shared
char *cur_line; \
int offsets[10]; \
Sfio_t **sftable; \
- unsigned char *fdstatus; \
+ unsigned int *fdstatus; \
const char *pwd; \
void *jmpbuffer; \
void *mktype; \
--- src/cmd/ksh93/include/io.h
+++ src/cmd/ksh93/include/io.h 2013-10-25 13:26:45.741248028 +0000
@@ -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 sh_iounpipe(Shell_t*);
extern int sh_chkopen(const char*);
extern int sh_ioaccess(int,int);
extern int sh_devtofd(const char*);
--- src/cmd/ksh93/include/jobs.h
+++ src/cmd/ksh93/include/jobs.h 2013-10-25 13:26:45.741248028 +0000
@@ -103,6 +103,7 @@ struct jobs
pid_t mypid; /* process id of shell */
pid_t mypgid; /* process group id of shell */
pid_t mytgid; /* terminal group id of shell */
+ pid_t lastpost; /* last job posted */
int curjobid;
unsigned int in_critical; /* >0 => in critical region */
int savesig; /* active signal */
@@ -152,11 +153,11 @@ extern struct jobs job;
#define job_lock() (job.in_critical++)
#define job_unlock() \
do { \
- int sig; \
- if (!--job.in_critical && (sig = job.savesig)) \
+ int _sig; \
+ if (!--job.in_critical && (_sig = job.savesig)) \
{ \
if (!job.in_critical++ && !vmbusy()) \
- job_reap(sig); \
+ job_reap(_sig); \
job.in_critical--; \
} \
} while(0)
--- src/cmd/ksh93/sh/args.c
+++ src/cmd/ksh93/sh/args.c 2013-10-25 13:26:45.741248028 +0000
@@ -32,6 +32,7 @@
#include "builtins.h"
#include "terminal.h"
#include "edit.h"
+#include "jobs.h"
#include "FEATURE/poll"
#if SHOPT_KIA
# include "shlex.h"
@@ -57,6 +58,7 @@
#define PRINT 2
static char *null;
+static pid_t *procsub;
/* The following order is determined by sh_optset */
static const char optksh[] = PFSHOPT BASHOPT "DircabefhkmnpstuvxBCGEl" HFLAG;
@@ -717,6 +719,7 @@ char **sh_argbuild(Shell_t *shp,int *nar
return(ap->dolval+ap->dolbot);
}
shp->lastpath = 0;
+ procsub = shp->procsub;
*nargs = 0;
if(ac)
{
@@ -737,6 +740,8 @@ char **sh_argbuild(Shell_t *shp,int *nar
}
argp = arghead;
}
+ if(procsub)
+ *procsub = 0;
}
{
register char **comargn;
@@ -782,8 +787,9 @@ struct argnod *sh_argprocsub(Shell_t *sh
{
/* argument of the form <(cmd) or >(cmd) */
register struct argnod *ap;
- int monitor, fd, pv[3];
+ int nn, monitor, fd, pv[3];
int subshell = shp->subshell;
+ pid_t pid0;
ap = (struct argnod*)stkseek(shp->stk,ARGVAL);
ap->argflag |= ARG_MAKE;
ap->argflag &= ~ARG_RAW;
@@ -794,18 +800,33 @@ struct argnod *sh_argprocsub(Shell_t *sh
sfwrite(shp->stk,e_devfdNN,8);
pv[2] = 0;
sh_pipe(pv);
+ sfputr(shp->stk,fmtbase((long)pv[fd],10,0),0);
#else
pv[0] = -1;
shp->fifo = pathtemp(0,0,0,"ksh.fifo",0);
mkfifo(shp->fifo,S_IRUSR|S_IWUSR);
sfputr(shp->stk,shp->fifo,0);
#endif /* SHOPT_DEVFD */
- sfputr(shp->stk,fmtbase((long)pv[fd],10,0),0);
ap = (struct argnod*)stkfreeze(shp->stk,0);
shp->inpipe = shp->outpipe = 0;
if(monitor = (sh_isstate(SH_MONITOR)!=0))
sh_offstate(SH_MONITOR);
shp->subshell = 0;
+#if SHOPT_DEVFD
+ fcntl(pv[fd],F_SETFD,0);
+ shp->fdstatus[pv[fd]] &= ~IOCLEX;
+#endif /* SHOPT_DEVFD */
+ pid0=shp->procsub?*shp->procsub:0;
+ if(!shp->procsub)
+ shp->procsub = procsub = newof(0,pid_t,shp->nprocsub=4,0);
+ else if((nn=procsub-shp->procsub) >= shp->nprocsub)
+ {
+ shp->nprocsub += 3;
+ shp->procsub = newof(shp->procsub,pid_t,shp->nprocsub,0);
+ procsub = shp->procsub + nn;
+ }
+ if(pid0)
+ *shp->procsub = 0;
if(fd)
{
shp->inpipe = pv;
@@ -816,11 +837,14 @@ struct argnod *sh_argprocsub(Shell_t *sh
shp->outpipe = pv;
sh_exec((Shnode_t*)argp->argchn.ap,(int)sh_isstate(SH_ERREXIT));
}
+ if(pid0)
+ *shp->procsub = pid0;
+ *procsub++ = job.lastpost;
shp->subshell = subshell;
if(monitor)
sh_onstate(SH_MONITOR);
#if SHOPT_DEVFD
- close(pv[1-fd]);
+ sh_close(pv[1-fd]);
sh_iosave(shp,-pv[fd], shp->topfd, (char*)0);
#else
free(shp->fifo);
--- src/cmd/ksh93/sh/array.c
+++ src/cmd/ksh93/sh/array.c 2013-10-25 13:26:45.742247936 +0000
@@ -438,10 +438,13 @@ int nv_arraysettype(Namval_t *np, Namval
nv_offattr(nq,NV_RDONLY);
if(!nv_isattr(tp,NV_BINARY))
{
+ char *prefix = shp->prefix;
if(xtrace)
sh_offoption(SH_XTRACE);
ap->nelem &= ~ARRAY_SCAN;
+ shp->prefix = 0;
sh_eval(sh_sfeval(av),0);
+ shp->prefix = prefix;
ap->nelem |= ARRAY_SCAN;
free((void*)av[0]);
if(xtrace)
@@ -773,7 +776,10 @@ static void array_putval(Namval_t *np, c
free((void*)aq->xp);
}
if((nfp = nv_disc(np,(Namfun_t*)ap,NV_POP)) && !(nfp->nofree&1))
+ {
+ ap = 0;
free((void*)nfp);
+ }
if(!nv_isnull(np))
{
if(!np->nvfun)
@@ -785,7 +791,7 @@ static void array_putval(Namval_t *np, c
if(np->nvalue.cp==Empty)
np->nvalue.cp = 0;
}
- if(!string && (flags&NV_TYPE))
+ if(!string && (flags&NV_TYPE) && ap)
array_unscope(np,ap);
}
--- src/cmd/ksh93/sh/fault.c
+++ src/cmd/ksh93/sh/fault.c 2013-10-25 13:26:45.742247936 +0000
@@ -518,6 +518,8 @@ void sh_exit(register int xno)
shp->exitval |= (sig=shp->lastsig);
if(pp && pp->mode>1)
cursig = -1;
+ if(shp->procsub)
+ *shp->procsub = 0;
#ifdef SIGTSTP
if(shp->trapnote&SH_SIGTSTP)
{
--- src/cmd/ksh93/sh/io.c
+++ src/cmd/ksh93/sh/io.c 2013-10-25 13:26:45.743247844 +0000
@@ -407,7 +407,7 @@ int sh_iovalidfd(Shell_t *shp, int fd)
{
Sfio_t **sftable = shp->sftable;
int max,n, **fdptrs = shp->fdptrs;
- unsigned char *fdstatus = shp->fdstatus;
+ unsigned int *fdstatus = shp->fdstatus;
if(fd<0)
return(0);
if(fd < shp->gd->lim.open_max)
@@ -422,13 +422,13 @@ int sh_iovalidfd(Shell_t *shp, int fd)
if(n > max)
n = max;
max = shp->gd->lim.open_max;
- shp->sftable = (Sfio_t**)calloc((n+1)*(sizeof(int*)+sizeof(Sfio_t*)+1),1);
+ shp->sftable = (Sfio_t**)calloc((n+1)*(sizeof(int*)+sizeof(Sfio_t*)+sizeof(*fdstatus)),1);
if(max)
memcpy(shp->sftable,sftable,max*sizeof(Sfio_t*));
shp->fdptrs = (int**)(&shp->sftable[n]);
if(max)
memcpy(shp->fdptrs,fdptrs,max*sizeof(int*));
- shp->fdstatus = (unsigned char*)(&shp->fdptrs[n]);
+ shp->fdstatus = (unsigned int*)(&shp->fdptrs[n]);
if(max)
memcpy(shp->fdstatus,fdstatus,max);
if(sftable)
@@ -686,7 +686,10 @@ int sh_close(register int fd)
register Sfio_t *sp;
register int r = 0;
if(fd<0)
+ {
+ errno = EBADF;
return(-1);
+ }
if(fd >= shp->gd->lim.open_max)
sh_iovalidfd(shp,fd);
if(!(sp=shp->sftable[fd]) || sfclose(sp) < 0)
@@ -699,13 +702,15 @@ int sh_close(register int fd)
}
if(fd>2)
shp->sftable[fd] = 0;
+ if(r = (shp->fdstatus[fd]>>8))
+ close(r);
shp->fdstatus[fd] = IOCLOSE;
if(shp->fdptrs[fd])
*shp->fdptrs[fd] = -1;
shp->fdptrs[fd] = 0;
if(fd < 10)
shp->inuse_bits &= ~(1<<fd);
- return(r);
+ return(0);
}
#ifdef O_SERVICE
@@ -873,9 +878,9 @@ int sh_iomovefd(register int fdold)
register int fdnew;
if(fdold >= shp->gd->lim.open_max)
sh_iovalidfd(shp,fdold);
- if(fdold<0 || fdold>2)
+ if(fdold<0 || fdold>9)
return(fdold);
- fdnew = sh_iomovefd(dup(fdold));
+ fdnew = sh_iomovefd(sh_fcntl(fdold,F_DUPFD,10));
shp->fdstatus[fdnew] = (shp->fdstatus[fdold]&~IOCLEX);
close(fdold);
shp->fdstatus[fdold] = IOCLOSE;
@@ -964,7 +969,7 @@ int sh_pipe(register int pv[])
while ((r=bind (pv[out], (struct sockaddr *) &sin, slen)) == -1 && errno==EADDRINUSE);
if(r<0 || listen(pv[out],5) <0)
{
- close(pv[out]);
+ sh_close(pv[out]);
errormsg(SH_DICT,ERROR_system(1),e_pipe);
}
fcntl(pv[out],F_SETFD,FD_CLOEXEC);
@@ -1079,7 +1084,7 @@ static char *io_usename(char *name, int
if((fd = sh_open(name,O_RDONLY,0)) >= 0)
{
r = fstat(fd,&statb);
- close(fd);
+ sh_close(fd);
if(r)
return(0);
if(!S_ISREG(statb.st_mode))
@@ -1144,6 +1149,7 @@ int sh_redirect(Shell_t *shp,struct iono
char *tname=0, *after="", *trace = shp->st.trap[SH_DEBUGTRAP];
Namval_t *np=0;
int isstring = shp->subshell?(sfset(sfstdout,0,0)&SF_STRING):0;
+ Sfio_t *sp;
if(flag==2)
clexec = 1;
@@ -1245,16 +1251,35 @@ int sh_redirect(Shell_t *shp,struct iono
{
int dupfd,toclose= -1;
io_op[2] = '&';
- if((fd=fname[0])>='0' && fd<='9')
+ if((fd=fname[0])>='0' && (fd=='{' || fd<='9'))
{
char *number = fname;
- dupfd = strtol(fname,&number,10);
+ int f;
+ if(fd=='{')
+ {
+ np = 0;
+ if(number=strchr(fname,'}'))
+ {
+ *number = 0;
+ np = nv_open(fname+1,shp->var_tree,NV_NOASSIGN|NV_VARNAME|NV_NOFAIL);
+ *number++ = '}';
+ }
+ if(!np)
+ {
+ message = e_file;
+ goto fail;
+ }
+ dupfd = nv_getnum(np);
+ np = 0;
+ }
+ else
+ dupfd = strtol(fname,&number,10);
if(*number=='-')
{
toclose = dupfd;
number++;
}
- if(*number || dupfd > IOUFD)
+ if(*number)
{
message = e_file;
goto fail;
@@ -1267,8 +1292,23 @@ int sh_redirect(Shell_t *shp,struct iono
shp->subdup |= 1<<fn;
dupfd = sffileno(sfstdout);
}
- else if(shp->sftable[dupfd])
+ else if(sp=shp->sftable[dupfd])
+ {
+ char *tmpname;
+ if((sfset(sp,0,0)&SF_STRING) && (tmpname = pathtemp(NiL ,NiL,NiL,"sf",&f)))
+ {
+ Sfoff_t last = sfseek(sp,(Sfoff_t)0,SEEK_END);
+
+ unlink(tmpname);
+ free(tmpname);
+ write(f, sp->_data, (size_t)last);
+ lseek(f,(Sfoff_t)0,SEEK_SET);
+
+ sfclose(sp);
+ sp = sfnew(sp,NULL,-1,f,SF_READ);
+ }
sfsync(shp->sftable[dupfd]);
+ }
if(dupfd!=1 && fn < 10)
shp->subdup &= ~(1<<fn);
}
@@ -1293,11 +1333,25 @@ int sh_redirect(Shell_t *shp,struct iono
}
if(flag==SH_SHOWME)
goto traceit;
- if((fd=sh_fcntl(dupfd,F_DUPFD,3))<0)
+ if((sp=shp->sftable[dupfd]) && sfset(sp,0,0)&SF_STRING)
+ {
+ char *cp;
+ Sfoff_t off = sftell(sp);
+ sfset(sp,SF_MALLOC,0);
+ cp = sfsetbuf(sp,(char*)sp,0);
+ sfset(sp,SF_MALLOC,1);
+ r = (int)(sfseek(sp,(Sfoff_t)0,SEEK_END)-off);
+ sfseek(sp,off,SEEK_SET);
+ fd = shp->gd->lim.open_max-1;
+ shp->sftable[fd] = sfnew(NIL(Sfio_t*),cp,r,-1,SF_READ|SF_STRING);
+ shp->fdstatus[fd] = shp->fdstatus[dupfd];
+ }
+ else if((fd=sh_fcntl(dupfd,F_DUPFD,3))<0)
goto fail;
if(fd>= shp->gd->lim.open_max)
sh_iovalidfd(shp,fd);
- sh_iocheckfd(shp,dupfd);
+ if(!shp->sftable[dupfd])
+ sh_iocheckfd(shp,dupfd);
shp->fdstatus[fd] = (shp->fdstatus[dupfd]&~IOCLEX);
if(toclose<0 && shp->fdstatus[fd]&IOREAD)
shp->fdstatus[fd] |= IODUP;
@@ -1496,7 +1550,8 @@ int sh_redirect(Shell_t *shp,struct iono
if(fn>9 || !(shp->inuse_bits&(1<<fn)))
io_preserve(shp,shp->sftable[fn],fn);
}
- sh_close(fn);
+ if(!(iof&IODOC))
+ sh_close(fn);
}
if(flag==3)
return(fd);
@@ -1531,7 +1586,24 @@ int sh_redirect(Shell_t *shp,struct iono
shp->inuse_bits |= (1<<fn);
}
}
- if(fd >2 && clexec)
+ else if(iof&IODOC)
+ {
+ Sfio_t *sp = &_Sfstderr;
+ if(fn==1)
+ sp = &_Sfstdout;
+ else if(fn==0)
+ sp = &_Sfstdin;
+ shp->sftable[fn] = shp->sftable[-1];
+ shp->fdstatus[fn] = shp->fdstatus[-1];
+ if(fn <=2)
+ {
+ sfswap(shp->sftable[fn],sp);
+ shp->sftable[fn] = sp;
+ }
+ shp->fdptrs[fn] = 0;
+ shp->sftable[-1] = 0;
+ }
+ if(fd >2 && clexec && !(shp->fdstatus[fd]&IOCLEX))
{
fcntl(fd,F_SETFD,FD_CLOEXEC);
shp->fdstatus[fd] |= IOCLEX;
@@ -1619,12 +1691,12 @@ static int io_heredoc(Shell_t *shp,regis
sfclose(infile);
}
}
+ if(traceon && !(iop->iofile&IOSTRG))
+ sfputr(sfstderr,iop->ioname,'\n');
/* close stream outfile, but save file descriptor */
fd = sffileno(outfile);
sfsetfd(outfile,-1);
sfclose(outfile);
- if(traceon && !(iop->iofile&IOSTRG))
- sfputr(sfstderr,iop->ioname,'\n');
lseek(fd,(off_t)0,SEEK_SET);
shp->fdstatus[fd] = IOREAD;
return(fd);
@@ -2059,9 +2131,11 @@ int sh_iocheckfd(Shell_t *shp, register
if(!(n&(IOSEEK|IONOSEEK)))
{
struct stat statb;
+ Sfio_t *sp = shp->sftable[fd];
/* /dev/null check is a workaround for select bug */
static ino_t null_ino;
static dev_t null_dev;
+ shp->sftable[fd] = 0;
if(null_ino==0 && stat(e_devnull,&statb) >=0)
{
null_ino = statb.st_ino;
@@ -2097,6 +2171,7 @@ int sh_iocheckfd(Shell_t *shp, register
n |= IONOSEEK;
else
n |= IOSEEK;
+ shp->sftable[fd] = sp;
}
if(fd==0)
n &= ~IOWRITE;
@@ -2143,6 +2218,7 @@ 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)
@@ -2494,12 +2570,14 @@ skip:
*/
ssize_t sh_read(register int fd, void* buff, size_t n)
{
+ int r,err=errno;
Shell_t *shp = sh_getinterp();
register Sfio_t *sp;
if(sp=shp->sftable[fd])
return(sfread(sp,buff,n));
- else
- return(read(fd,buff,n));
+ while ((r=read(fd,buff,n))<0 && errno==EINTR)
+ errno = err;
+ return(r);
}
#undef write
@@ -2508,12 +2586,14 @@ ssize_t sh_read(register int fd, void* b
*/
ssize_t sh_write(register int fd, const void* buff, size_t n)
{
+ int r,err=errno;
Shell_t *shp = sh_getinterp();
register Sfio_t *sp;
if(sp=shp->sftable[fd])
return(sfwrite(sp,buff,n));
- else
- return(write(fd,buff,n));
+ while ((r=write(fd,buff,n))<0 && errno==EINTR)
+ errno = err;
+ return(r);
}
#undef lseek
--- src/cmd/ksh93/sh/jobs.c
+++ src/cmd/ksh93/sh/jobs.c 2013-10-25 13:26:45.744247751 +0000
@@ -424,6 +424,8 @@ int job_reap(register int sig)
}
if(pid<=0)
break;
+ if(pid==shp->spid)
+ shp->spid = 0;
if(wstat==0)
job_chksave(pid);
flags |= WNOHANG;
@@ -520,7 +522,12 @@ int job_reap(register int sig)
{
shp->sigflag[SIGCHLD] |= SH_SIGTRAP;
if(sig==0)
+ {
+ int c = job.in_critical;
+ job.in_critical = 0;
job_chldtrap(shp,shp->st.trapcom[SIGCHLD],0);
+ job.in_critical = c;
+ }
else
shp->trapnote |= SH_SIGTRAP;
}
@@ -646,7 +653,7 @@ void job_init(Shell_t *shp, int lflag)
return;
while(close(JOBTTY)<0 && errno==EINTR)
errno = err;
- if((fd = open(ttynam,O_RDWR)) <0)
+ if((fd = sh_open(ttynam,O_RDWR)) <0)
return;
if(fd!=JOBTTY)
sh_iorenumber(shp,fd,JOBTTY);
@@ -1313,6 +1320,7 @@ int job_post(Shell_t *shp,pid_t pid, pid
return(0);
}
job_lock();
+ job.lastpost = pid;
#ifdef SHOPT_BGX
if(join==1)
{
@@ -1635,9 +1643,21 @@ int job_wait(register pid_t pid)
if(intr && shp->trapnote)
shp->exitval = 1;
pwfg = 0;
- job_unlock();
if(pid==1)
+ {
+ if(nochild)
+ {
+ for(pw=job.pwlist; pw; pw=px)
+ {
+ px = pw->p_nxtjob;
+ pw->p_flag |= P_DONE;
+ job_unpost(pw,1);
+ }
+ }
+ job_unlock();
return(nochild);
+ }
+ job_unlock();
exitset();
if(pid==0)
goto done;
@@ -1800,7 +1820,7 @@ static struct process *job_unpost(regist
#endif /* DEBUG */
pwtop = pw = job_byjid((int)pwtop->p_job);
#ifdef SHOPT_BGX
- if(pw->p_flag&P_BG)
+ if(!pw || pw->p_flag&P_BG)
return(pw);
#endif /* SHOPT_BGX */
for(; pw && (pw->p_flag&P_DONE)&&(notify||!(pw->p_flag&P_NOTIFY)||pw->p_env); pw=pw->p_nxtproc);
--- src/cmd/ksh93/sh/lex.c
+++ src/cmd/ksh93/sh/lex.c 2013-10-25 13:26:45.744247751 +0000
@@ -556,7 +556,7 @@ int sh_lex(Lex_t* lp)
lp->lexd.docword=1;
else if(n==LPAREN)
{
- if(lp->lex.intest)
+ if(lp->lex.intest || lp->comp_assign)
return(c);
lp->lexd.nest=1;
lp->lastline = shp->inlineno;
@@ -2468,7 +2468,7 @@ 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;
}
--- src/cmd/ksh93/sh/macro.c
+++ src/cmd/ksh93/sh/macro.c 2013-10-25 13:26:45.745247659 +0000
@@ -392,7 +392,7 @@ 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)
@@ -447,6 +447,7 @@ static void copyto(register Mac_t *mp,in
int ansi_c = 0;
int paren = 0;
int ere = 0;
+ int dotdot = 0;
int brace = 0;
Sfio_t *sp = mp->sp;
Stk_t *stkp = mp->shp->stk;
@@ -846,7 +847,7 @@ e_badsubscript,*cp);
{
sfwrite(stkp,first,c);
sfputc(stkp,0);
- mp->dotdot = stktell(stkp);
+ dotdot = stktell(stkp);
cp = first = fcseek(c+2);
}
break;
@@ -854,6 +855,7 @@ e_badsubscript,*cp);
}
done:
mp->sp = sp;
+ mp->dotdot = dotdot;
mp->quote = oldquote;
}
@@ -1010,7 +1012,6 @@ static int subcopy(Mac_t *mp, int flag)
mp->pattern = flag?4:0;
mp->arrayok=1;
mp->subcopy++;
- mp->dotdot = 0;
copyto(mp,RBRACT,0);
mp->subcopy = 0;
mp->pattern = xpattern;
@@ -1099,6 +1100,7 @@ static int varsub(Mac_t *mp)
Stk_t *stkp = mp->shp->stk;
retry1:
mp->zeros = 0;
+ mp->dotdot = 0;
idbuff[0] = 0;
idbuff[1] = 0;
c = fcmbget(&LEN);
@@ -1166,7 +1168,7 @@ 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;
@@ -1349,7 +1351,7 @@ retry1:
ap = nv_arrayptr(np=nq);
if(ap)
{
- nv_putsub(np,v,ARRAY_SCAN);
+ np = nv_putsub(np,v,ARRAY_SCAN);
v = stkptr(stkp,mp->dotdot);
dolmax =1;
if(array_assoc(ap))
@@ -2077,6 +2079,18 @@ static void comsubst(Mac_t *mp,register
fcrestore(&save);
return;
}
+ else if(type==2 && t && (t->tre.tretyp&COMMSK)==0 && t->com.comarg)
+ {
+ Namval_t *np;
+ str = NULL;
+ if(!(t->com.comtyp&COMSCAN))
+ {
+ struct dolnod *ap = (struct dolnod*)t->com.comarg;
+ str = ap->dolval[ap->dolbot];
+ }
+ else if(t->com.comarg->argflag&ARG_RAW)
+ str = t->com.comarg->argval;
+ }
}
else
{
@@ -2158,10 +2172,9 @@ static void comsubst(Mac_t *mp,register
mp->ifsp = nv_getval(np);
stkset(stkp,savptr,savtop);
newlines = 0;
- sfsetbuf(sp,(void*)sp,0);
- bufsize = sfvalue(sp);
/* read command substitution output and put on stack or here-doc */
sfpool(sp, NIL(Sfio_t*), SF_WRITE);
+ sfset(sp, SF_WRITE|SF_PUBLIC|SF_SHARE,0);
sh_offstate(SH_INTERACTIVE);
if((foff = sfseek(sp,(Sfoff_t)0,SEEK_END)) > 0)
{
@@ -2170,6 +2183,8 @@ static void comsubst(Mac_t *mp,register
stkseek(stkp,soff+foff+64);
stkseek(stkp,soff);
}
+ if(foff > IOBSIZE)
+ sfsetbuf(sp,NULL,SF_UNBOUND);
while((str=(char*)sfreserve(sp,SF_UNBOUND,0)) && (c=bufsize=sfvalue(sp))>0)
{
#if SHOPT_CRNL
@@ -2291,6 +2306,13 @@ static void mac_copy(register Mac_t *mp,
Stk_t *stkp=mp->shp->stk;
int oldpat = mp->pattern;
nopat = (mp->quote||(mp->assign==1)||mp->arith);
+ if(size>512)
+ {
+ /* pre-allocate to improve performance */
+ c = stktell(stkp);
+ stkseek(stkp,c+size+(size>>4));
+ stkseek(stkp,c);
+ }
if(mp->zeros)
{
/* prevent leading 0's from becomming octal constants */
--- src/cmd/ksh93/sh/main.c
+++ src/cmd/ksh93/sh/main.c 2013-10-25 13:26:45.745247659 +0000
@@ -309,7 +309,7 @@ int sh_main(int ac, char *av[], Shinit_f
int isdir = 0;
if((fdin=sh_open(name,O_RDONLY,0))>=0 &&(fstat(fdin,&statb)<0 || S_ISDIR(statb.st_mode)))
{
- close(fdin);
+ sh_close(fdin);
isdir = 1;
fdin = -1;
}
--- src/cmd/ksh93/sh/name.c
+++ src/cmd/ksh93/sh/name.c 2013-10-25 13:26:45.746247567 +0000
@@ -421,6 +421,8 @@ void nv_setlist(register struct argnod *
if(array&NV_ARRAY)
{
nv_setarray(np,nv_associative);
+ if(typ)
+ nv_settype(np,typ,0);
}
else
{
@@ -436,7 +438,7 @@ void nv_setlist(register struct argnod *
#endif /* SHOPT_TYPEDEF */
}
/* check for array assignment */
- if(tp->tre.tretyp!=TLST && tp->com.comarg && !tp->com.comset && ((array&NV_IARRAY) || !((mp=tp->com.comnamp) && nv_isattr(mp,BLT_DCL))))
+ if((tp->tre.tretyp&COMMSK)==TCOM && tp->com.comarg && !tp->com.comset && ((array&NV_IARRAY) || !((mp=tp->com.comnamp) && nv_isattr(mp,BLT_DCL))))
{
int argc;
Dt_t *last_root = shp->last_root;
@@ -509,6 +511,7 @@ void nv_setlist(register struct argnod *
if(!(array&NV_IARRAY) && !(tp->com.comset->argflag&ARG_MESSAGE))
nv_setarray(np,nv_associative);
}
+ shp->typeinit = 0;
nv_setlist(tp->com.comset,flags&~NV_STATIC,0);
shp->prefix = prefix;
if(tp->com.comset->argval[1]!='[')
@@ -1292,8 +1295,9 @@ void nv_delete(Namval_t* np, Dt_t *root,
if(rp->sub)
free(rp->sub);
rp->sub = 0;
- rp = dtdelete(Refdict,(void*)rp);
- rp->np = &NullNode;
+ rp = dtremove(Refdict,(void*)rp);
+ if(rp)
+ rp->np = &NullNode;
}
}
}
@@ -1345,10 +1349,12 @@ Namval_t *nv_open(const char *name, Dt_t
struct Cache_entry *xp;
#endif
- sh_stats(STAT_NVOPEN);
memset(&fun,0,sizeof(fun));
shp->openmatch = 0;
shp->last_table = 0;
+ if(!name)
+ return(0);
+ sh_stats(STAT_NVOPEN);
if(!root)
root = shp->var_tree;
shp->last_root = root;
@@ -2470,6 +2476,8 @@ 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);
}
@@ -2552,9 +2560,11 @@ void _nv_unset(register Namval_t *np,int
/* This function contains disc */
if(!nv_local)
{
+ Dt_t *last_root = shp->last_root;
nv_local=1;
nv_putv(np,NIL(char*),flags,np->nvfun);
nv_local=0;
+ shp->last_root = last_root;
return;
}
/* called from disc, assign the actual value */
@@ -2575,7 +2585,7 @@ void _nv_unset(register Namval_t *np,int
{
if(np->nvalue.nrp->root)
- dtdelete(Refdict,(void*)np->nvalue.nrp);
+ dtremove(Refdict,(void*)np->nvalue.nrp);
if(np->nvalue.nrp->sub)
free(np->nvalue.nrp->sub);
free((void*)np->nvalue.nrp);
@@ -3577,7 +3587,7 @@ void nv_unref(register Namval_t *np)
{
if(np->nvalue.nrp->sub)
free(np->nvalue.nrp->sub);
- dtdelete(Refdict,(void*)np->nvalue.nrp);
+ dtremove(Refdict,(void*)np->nvalue.nrp);
}
free((void*)np->nvalue.nrp);
np->nvalue.cp = strdup(nv_name(nq));
--- src/cmd/ksh93/sh/nvtree.c
+++ src/cmd/ksh93/sh/nvtree.c 2013-10-25 13:26:45.747247475 +0000
@@ -144,8 +144,9 @@ static Namfun_t *nextdisc(Namval_t *np)
void *nv_diropen(Namval_t *np,const char *name)
{
- char *next,*last;
- int c,len=strlen(name);
+ const char *last;
+ char *next;
+ size_t c=0,len=strlen(name);
struct nvdir *save, *dp = new_of(struct nvdir,len+1);
Namval_t *nq=0,fake;
Namfun_t *nfp=0;
@@ -1031,9 +1032,18 @@ static char *walk_tree(register Namval_t
shp->var_tree = dp;
if(nq && mq)
{
+ register struct nvdir *odir=0,*dp = (struct nvdir*)dir;
+ if(dp->table==nq)
+ {
+ dp = dp->prev;
+ odir = dir;
+ dir = dp;
+ }
nv_clone(nq,mq,flags|NV_RAW);
if(flags&NV_MOVE)
nv_delete(nq,walk.root,0);
+ if(odir)
+ free(odir);
}
continue;
}
--- src/cmd/ksh93/sh/nvtype.c
+++ src/cmd/ksh93/sh/nvtype.c 2013-10-25 13:26:45.747247475 +0000
@@ -484,7 +484,10 @@ static Namfun_t *clone_type(Namval_t* np
}
}
if(nv_isattr(mp,NV_BINARY))
+ {
mp->nvalue.cp = dp->data;
+ nv_onattr(mp,NV_NOFREE);
+ }
if(pp->strsize<0)
dp->strsize = -pp->strsize;
return(&dp->fun);
--- src/cmd/ksh93/sh/parse.c
+++ src/cmd/ksh93/sh/parse.c 2013-10-25 13:26:45.748247383 +0000
@@ -1722,6 +1722,7 @@ static struct ionod *inout(Lex_t *lexp,s
lexp->digits=0;
iop=(struct ionod*) stkalloc(stkp,sizeof(struct ionod));
iop->iodelim = 0;
+ iop->iosize = 0;
if(token=sh_lex(lexp))
{
if(token==RPAREN && (iof&IOLSEEK) && lexp->comsub)
--- src/cmd/ksh93/sh/path.c
+++ src/cmd/ksh93/sh/path.c 2013-10-25 13:27:42.151044203 +0000
@@ -333,7 +333,8 @@ static char *path_lib(Shell_t *shp,Pathc
char save[8];
for( ;pp; pp=pp->next)
{
- path_checkdup(shp,pp);
+ if(!pp->dev && !pp->ino)
+ path_checkdup(shp,pp);
if(pp->ino==statb.st_ino && pp->dev==statb.st_dev && pp->mtime==statb.st_mtime)
return(pp->lib);
}
@@ -613,6 +614,7 @@ 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);
@@ -876,7 +878,7 @@ Pathcomp_t *path_absolute(Shell_t *shp,r
{
nv_onattr(nv_open(name,sh_subfuntree(shp,1),NV_NOARRAY|NV_IDENT|NV_NOSCOPE),NV_LTOU|NV_FUNCTION);
funload(shp,f,name);
- close(f);
+ sh_close(f);
f = -1;
return(0);
}
@@ -1408,7 +1410,7 @@ static void exscript(Shell_t *shp,regist
sabuf.ac_etime = compress( (time_t)(after-before));
fd = open( SHACCT , O_WRONLY | O_APPEND | O_CREAT,RW_ALL);
write(fd, (const char*)&sabuf, sizeof( sabuf ));
- close( fd);
+ sh_close( fd);
}
}
--- src/cmd/ksh93/sh/streval.c
+++ src/cmd/ksh93/sh/streval.c 2013-10-25 13:26:45.749247290 +0000
@@ -165,14 +165,11 @@ Sfdouble_t arith_exec(Arith_t *ep)
Math_f fun;
struct lval node;
Shell_t *shp = ep->shp;
+ memset(&node,0,sizeof(node));
node.shp = shp;
node.emode = ep->emode;
node.expr = ep->expr;
node.elen = ep->elen;
- node.value = 0;
- node.nosub = 0;
- node.ptr = 0;
- node.eflag = 0;
if(level++ >=MAXLEVEL)
{
arith_error(e_recursive,ep->expr,ep->emode);
--- src/cmd/ksh93/sh/subshell.c
+++ src/cmd/ksh93/sh/subshell.c 2013-10-25 13:26:45.749247290 +0000
@@ -122,23 +122,26 @@ 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)
{
+ int err=errno;
fcntl(fd,F_SETFD,FD_CLOEXEC);
shp->fdstatus[fd] = shp->fdstatus[1]|IOCLEX;
- close(1);
+ while(close(1)<0 && errno==EINTR)
+ errno = err;
}
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 */
int fds[3];
Sfoff_t off;
fds[2] = 0;
- sh_pipe(fds);
+ sh_rpipe(fds);
sp->pipefd = fds[0];
sh_fcntl(sp->pipefd,F_SETFD,FD_CLOEXEC);
/* write the data to the pipe */
@@ -180,7 +183,7 @@ 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)
@@ -204,6 +207,7 @@ void sh_subfork(void)
{
/* this is the child part of the fork */
/* setting subpid to 1 causes subshell to exit when reached */
+ shp->cpid = 0;
sh_onstate(SH_FORKED);
sh_onstate(SH_NOLOG);
sh_offoption(SH_MONITOR);
@@ -213,7 +217,7 @@ 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;
}
}
@@ -337,7 +341,7 @@ static void nv_restore(struct subshell *
}
nv_setsize(mp,nv_size(np));
if(!(flags&NV_MINIMAL))
- mp->nvenv = np->nvenv;
+ mp->nvenv = nv_isnull(mp)?0:np->nvenv;
if(!nofree)
mp->nvfun = np->nvfun;
if(nv_isattr(np,NV_IDENT))
@@ -494,6 +498,8 @@ Sfio_t *sh_subshell(Shell_t *shp,Shnode_
subenv = 0;
}
shp->curenv = ++subenv;
+ if(shp->curenv<=0)
+ shp->curenv = subenv = 1;
savst = shp->st;
sh_pushcontext(shp,&buff,SH_JMPSUB);
subshell = shp->subshell+1;
@@ -508,6 +514,7 @@ Sfio_t *sh_subshell(Shell_t *shp,Shnode_
sp->options = shp->options;
sp->jobs = job_subsave();
sp->subdup = shp->subdup;
+ shp->subdup = 0;
#if SHOPT_COSHELL
sp->coshell = shp->coshell;
shp->coshell = 0;
@@ -530,7 +537,9 @@ Sfio_t *sh_subshell(Shell_t *shp,Shnode_
job.curpgid = 0;
sp->subshare = shp->subshare;
sp->comsub = shp->comsub;
- shp->subshare = comsub==2 || (comsub==1 && sh_isoption(SH_SUBSHARE));
+ shp->subshare = comsub==2 || (comsub && sh_isoption(SH_SUBSHARE));
+ if(!shp->subshare)
+ sp->pathlist = path_dup((Pathcomp_t*)shp->pathlist);
if(comsub)
shp->comsub = comsub;
if(!comsub || !shp->subshare)
@@ -604,7 +613,7 @@ Sfio_t *sh_subshell(Shell_t *shp,Shnode_
sp->tmpfd = -1;
sp->pipefd = -1;
/* use sftmp() file for standard output */
- if(!(iop = sftmp(PIPE_BUF)))
+ if(!(iop = sftmp(comsub==1?PIPE_BUF:IOBSIZE)))
{
sfswap(sp->saveout,sfstdout);
errormsg(SH_DICT,ERROR_system(1),e_tmpcreate);
@@ -639,6 +648,7 @@ Sfio_t *sh_subshell(Shell_t *shp,Shnode_
sh_popcontext(shp,&buff);
if(shp->subshell==0) /* must be child process */
{
+ shp->st.trapcom[0] = 0;
subshell_data = sp->prev;
if(jmpval==SH_JMPSCRIPT)
siglongjmp(*shp->jmplist,jmpval);
@@ -664,6 +674,19 @@ Sfio_t *sh_subshell(Shell_t *shp,Shnode_
}
else
{
+ if(comsub!=1 && shp->spid)
+ {
+ int c = shp->exitval;
+ job_wait(shp->spid);
+ if(shp->exitval==ERROR_NOENT)
+ {
+ shp->exitval = c;
+ shp->savexit=shp->exitval;
+ }
+ if(shp->pipepid==shp->spid)
+ shp->spid = 0;
+ shp->pipepid = 0;
+ }
/* move tmp file to iop and restore sfstdout */
iop = sfswap(sfstdout,NIL(Sfio_t*));
if(!iop)
@@ -690,19 +713,27 @@ Sfio_t *sh_subshell(Shell_t *shp,Shnode_
}
sfset(iop,SF_READ,1);
}
- sfswap(sp->saveout,sfstdout);
+ if(sp->saveout)
+ sfswap(sp->saveout,sfstdout);
+ else
+ sfstdout = &_Sfstdout;
/* check if standard output was preserved */
if(sp->tmpfd>=0)
{
- close(1);
+ int err=errno;
+ while(close(1)<0 && errno==EINTR)
+ errno = err;
if (fcntl(sp->tmpfd,F_DUPFD,1) != 1)
duped++;
sh_close(sp->tmpfd);
}
shp->fdstatus[1] = sp->fdstatus;
}
- path_delete((Pathcomp_t*)shp->pathlist);
- shp->pathlist = (void*)sp->pathlist;
+ if(!shp->subshare)
+ {
+ path_delete((Pathcomp_t*)shp->pathlist);
+ shp->pathlist = (void*)sp->pathlist;
+ }
job_subrestore(sp->jobs);
shp->jobenv = savecurenv;
job.curpgid = savejobpgid;
@@ -764,8 +795,6 @@ Sfio_t *sh_subshell(Shell_t *shp,Shnode_
}
else
free((void*)sp->pwd);
- if(sp->pwdclose)
- close(sp->pwdfd);
if(sp->mask!=shp->mask)
umask(shp->mask=sp->mask);
if(shp->coutpipe!=sp->coutpipe)
@@ -777,8 +806,9 @@ Sfio_t *sh_subshell(Shell_t *shp,Shnode_
shp->cpipe[1] = sp->cpipe;
shp->coutpipe = sp->coutpipe;
}
+ if(sp->pwdclose)
+ close(sp->pwdfd);
shp->subshare = sp->subshare;
- shp->comsub = sp->comsub;
shp->subdup = sp->subdup;
#if SHOPT_COSHELL
shp->coshell = sp->coshell;
@@ -808,7 +838,12 @@ Sfio_t *sh_subshell(Shell_t *shp,Shnode_
if(nsig>0)
kill(getpid(),nsig);
if(sp->subpid)
+ {
job_wait(sp->subpid);
+ if(comsub>1)
+ sh_iounpipe(shp);
+ }
+ shp->comsub = sp->comsub;
if(comsub && iop && sp->pipefd<0)
sfseek(iop,(off_t)0,SEEK_SET);
if(shp->trapnote)
--- src/cmd/ksh93/sh/xec.c
+++ src/cmd/ksh93/sh/xec.c 2013-10-25 13:29:00.390826813 +0000
@@ -102,26 +102,30 @@ struct funenv
* temp file.
*/
static int subpipe[3],subdup,tsetio,usepipe;
-static void iounpipe(Shell_t*);
static int iousepipe(Shell_t *shp)
{
- int i;
+ int fd=sffileno(sfstdout),i,err=errno;
if(usepipe)
{
usepipe++;
- iounpipe(shp);
+ sh_iounpipe(shp);
}
if(sh_rpipe(subpipe) < 0)
return(0);
usepipe++;
- fcntl(subpipe[0],F_SETFD,FD_CLOEXEC);
- subpipe[2] = 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 +139,23 @@ static int iousepipe(Shell_t *shp)
return(1);
}
-static void iounpipe(Shell_t *shp)
+void sh_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 +187,7 @@ static void iounpipe(Shell_t *shp)
else if(errno!=EINTR)
break;
}
+done:
sh_close(subpipe[0]);
subpipe[0] = -1;
tsetio = 0;
@@ -748,20 +762,20 @@ static void *sh_coinit(Shell_t *shp,char
{
struct cosh *csp = job.colist;
const char *name = argv?argv[0]:0;
- int id, open=1;
+ int id, xopen=1;
if(!name)
return(0);
if(*name=='-')
{
name++;
- open=0;
+ xopen=0;
}
nv_open(name,shp->var_tree,NV_IDENT|NV_NOADD);
while(csp)
{
if(strcmp(name,csp->name)==0)
{
- if(open)
+ if(xopen)
{
coattr(csp->coshell,argv[1]);
return((void*)csp);
@@ -771,7 +785,7 @@ static void *sh_coinit(Shell_t *shp,char
}
csp = csp->next;
}
- if(!open)
+ if(!xopen)
errormsg(SH_DICT,ERROR_exit(1),"%s: unknown namespace",name);
environ[0][2]=0;
csp = newof(0,struct cosh,1,strlen(name)+1);
@@ -898,13 +912,14 @@ static int sh_coexec(Shell_t *shp,const
#if SHOPT_FILESCAN
static Sfio_t *openstream(Shell_t *shp, struct ionod *iop, int *save)
{
- int savein, fd = sh_redirect(shp,iop,3);
+ int err=errno,savein, fd = sh_redirect(shp,iop,3);
Sfio_t *sp;
savein = dup(0);
if(fd==0)
fd = savein;
sp = sfnew(NULL,NULL,SF_UNBOUND,fd,SF_READ);
- close(0);
+ while(close(0)<0 && errno==EINTR)
+ errno = err;
open(e_devnull,O_RDONLY);
shp->offsets[0] = -1;
shp->offsets[1] = 0;
@@ -1434,7 +1449,11 @@ int sh_exec(register const Shnode_t *t,
stat(".",&stata);
/* restore directory changed */
if(statb.st_ino!=stata.st_ino || statb.st_dev!=stata.st_dev)
- chdir(shp->pwd);
+ {
+ int err=errno;
+ while((chdir(shp->pwd) < 0) && errno==EINTR)
+ errno = err;
+ }
}
sh_offstate(SH_STOPOK);
if(share&SF_SHARE)
@@ -1570,7 +1589,7 @@ int sh_exec(register const Shnode_t *t,
unset_instance(nq,&node,&nr,mode);
sh_funstaks(slp->slchild,-1);
stakdelete(slp->slptr);
- if(jmpval > SH_JMPFUN)
+ if(jmpval > SH_JMPFUN || (io && jmpval>SH_JMPIO))
siglongjmp(*shp->jmplist,jmpval);
goto setexit;
}
@@ -1597,10 +1616,14 @@ 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]) &&
@@ -1676,7 +1699,7 @@ int sh_exec(register const Shnode_t *t,
if(parent<0)
{
if(shp->comsub==1 && usepipe && unpipe)
- iounpipe(shp);
+ sh_iounpipe(shp);
break;
}
#else
@@ -1693,7 +1716,7 @@ int sh_exec(register const Shnode_t *t,
if(parent<0)
{
if(shp->comsub==1 && usepipe && unpipe)
- iounpipe(shp);
+ sh_iounpipe(shp);
break;
}
#else
@@ -1715,6 +1738,8 @@ 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))
@@ -1730,11 +1755,15 @@ 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)
- iounpipe(shp);
+ if(usepipe && tsetio && subdup)
+ sh_iounpipe(shp);
if(!sh_isoption(SH_MONITOR))
{
shp->trapnote &= ~SH_SIGIGNORE;
@@ -1906,8 +1935,8 @@ int sh_exec(register const Shnode_t *t,
{
was_interactive = sh_isstate(SH_INTERACTIVE);
sh_offstate(SH_INTERACTIVE);
- sh_iosave(shp,0,shp->topfd,(char*)0);
shp->pipepid = simple;
+ sh_iosave(shp,0,shp->topfd,(char*)0);
sh_iorenumber(shp,shp->inpipe[0],0);
/*
* if read end of pipe is a simple command
@@ -1924,7 +1953,7 @@ int sh_exec(register const Shnode_t *t,
jmpval = sigsetjmp(buffp->buff,0);
if(jmpval==0)
{
- if(shp->comsub==1)
+ if(shp->comsub)
tsetio = 1;
sh_redirect(shp,t->fork.forkio,execflg);
(t->fork.forktre)->tre.tretyp |= t->tre.tretyp&FSHOWME;
@@ -1953,8 +1982,8 @@ int sh_exec(register const Shnode_t *t,
if(type || !sh_isoption(SH_PIPEFAIL))
shp->exitval = type;
}
- if(shp->comsub==1 && usepipe)
- iounpipe(shp);
+ if(shp->comsub==1 && usepipe && unpipe)
+ sh_iounpipe(shp);
shp->pipepid = 0;
shp->st.ioset = 0;
if(simple && was_errexit)
@@ -2179,7 +2208,7 @@ 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_isstate(SH_INTERACTIVE))
tcsetpgrp(JOBTTY,shp->gd->pid);
#endif /*SIGTSTP */
job.curpgid = savepgid;
@@ -2320,7 +2349,10 @@ int sh_exec(register const Shnode_t *t,
nv_putsub(np,NIL(char*),0L);
nv_putval(np,cp,0);
if(nameref)
+ {
nv_setref(np,(Dt_t*)0,NV_VARNAME);
+ nv_onattr(np,NV_TABLE);
+ }
if(trap=shp->st.trap[SH_DEBUGTRAP])
{
av[0] = (t->tre.tretyp&COMSCAN)?"select":"for";
@@ -2352,6 +2384,8 @@ int sh_exec(register const Shnode_t *t,
if(shp->st.breakcnt<0)
shp->st.execbrk = (++shp->st.breakcnt !=0);
}
+ if(nameref)
+ nv_offattr(np,NV_TABLE);
#if SHOPT_OPTIMIZE
endfor:
sh_popcontext(shp,buffp);
@@ -2466,8 +2500,10 @@ int sh_exec(register const Shnode_t *t,
#if SHOPT_FILESCAN
if(iop)
{
+ int err=errno;
sfclose(iop);
- close(0);
+ while(close(0)<0 && errno==EINTR)
+ errno = err;
dup(savein);
shp->cur_line = 0;
}
@@ -2746,7 +2782,7 @@ int sh_exec(register const Shnode_t *t,
stakdelete(slp->slptr);
if(rp->sdict)
{
- Namval_t *mp, *nq;
+ Namval_t *nq;
shp->last_root = rp->sdict;
for(mp=(Namval_t*)dtfirst(rp->sdict);mp;mp=nq)
{
@@ -2911,6 +2947,15 @@ int sh_exec(register const Shnode_t *t,
break;
}
}
+ if(shp->procsub && *shp->procsub)
+ {
+ pid_t pid, *procsub;
+ int exitval = shp->exitval;
+ for(procsub=shp->procsub;pid=*procsub;procsub++)
+ job_wait(pid);
+ *shp->procsub = 0;
+ shp->exitval = exitval;
+ }
if(shp->trapnote || (shp->exitval && sh_isstate(SH_ERREXIT)) &&
t && echeck)
sh_chktrap(shp);
@@ -3167,7 +3212,7 @@ pid_t _sh_fork(Shell_t *shp,register pid
{
if(shp->topfd > restorefd)
sh_iorestore(shp,restorefd,0);
- iounpipe(shp);
+ sh_iounpipe(shp);
}
}
return(parent);
@@ -3479,8 +3524,7 @@ 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)
@@ -3523,7 +3567,6 @@ 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
@@ -3628,11 +3671,11 @@ 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);
- close(outfd);
+ sh_close(outfd);
shp->fdstatus[outfd] = IOCLOSE;
shp->cpipe[1] = fd;
}
@@ -3721,7 +3764,7 @@ static int run_subshell(Shell_t *shp,con
if(!shp->gd->shpath)
shp->gd->shpath = pathshell();
pid = spawnveg(shp->shpath,arglist,envlist,grp);
- close(fd);
+ sh_close(fd);
for(i=3; i < 10; i++)
{
if(shp->fdstatus[i]&IOCLEX && i!=pin && i!=pout)
@@ -4002,7 +4045,7 @@ static pid_t sh_ntfork(Shell_t *shp,cons
shp->gd->shpath = pathshell();
spawnpid = path_spawn(shp,shp->gd->shpath,&argv[-1],arge,pp,(grp<<1)|1);
if(fd>=0)
- close(fd);
+ sh_close(fd);
argv[0] = argv[-1];
}
fail:
--- src/cmd/ksh93/tests/leaks.sh
+++ src/cmd/ksh93/tests/leaks.sh 2013-10-25 13:26:45.751247106 +0000
@@ -67,6 +67,11 @@ done
data="(v=;sid=;di=;hi=;ti='1328244300';lv='o';id='172.3.161.178';var=(k='conn_num._total';u=;fr=;l='Number of Connections';n='22';t='number';))"
read -C stat <<< "$data"
+for ((i=0; i < 1; i++))
+do print -r -- "$data"
+done | while read -u$n -C stat
+ do :
+ done {n}<&0-
a=0$(vmstate --format='+%(size)u')
for ((i=0; i < 500; i++))
do print -r -- "$data"
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