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Add rfork builtin.

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rsc 2005-08-11 16:44:43 +00:00
parent 4ae2f414e2
commit f7174317de
1 changed files with 53 additions and 0 deletions
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53
src/cmd/rc/plan9ish.c
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@ -36,6 +36,7 @@ void execbind(void);
void execmount(void);
void execulimit(void);
void execumask(void);
void execrfork(void);
builtin Builtin[]={
"cd", execcd,
"whatis", execwhatis,
@ -49,8 +50,60 @@ builtin Builtin[]={
"flag", execflag,
"ulimit", execulimit,
"umask", execumask,
"rfork", execrfork,
0
};
void
execrfork(void)
{
int arg;
char *s;
switch(count(runq->argv->words)){
case 1:
arg = RFENVG|RFNOTEG|RFNAMEG;
break;
case 2:
arg = 0;
for(s = runq->argv->words->next->word;*s;s++) switch(*s){
default:
goto Usage;
case 'n':
arg|=RFNAMEG; break;
case 'N':
arg|=RFCNAMEG;
break;
case 'e':
/* arg|=RFENVG; */ break;
case 'E':
arg|=RFCENVG; break;
case 's':
arg|=RFNOTEG; break;
case 'f':
arg|=RFFDG; break;
case 'F':
arg|=RFCFDG; break;
}
break;
default:
Usage:
pfmt(err, "Usage: %s [nNeEsfF]\n", runq->argv->words->word);
setstatus("rfork usage");
poplist();
return;
}
if(rfork(arg)==-1){
pfmt(err, "rc: %s failed\n", runq->argv->words->word);
setstatus("rfork failed");
}
else
setstatus("");
poplist();
}
#define SEP '\1'
char **environp;
struct word *enval(s)