コード例 #1
0
ファイル: main.c プロジェクト: cham-s/21sh
int		main(int ac, char **av, char **env)
{
	t_cmd	cmd;
	t_dict	*dicts[DICT_COUNT];

	(void)ac;
	(void)av;
	init_tokens(&dicts[TOKENS]);
	init_binaries(&dicts[BIN]);
	dicts[ENV] = envcpy(env);
	signals();
	interpret_command(dicts, &cmd);
	destroy_array_dict(dicts, DICT_COUNT);
	cmd_free(&cmd);
	return (0);
}
コード例 #2
0
ファイル: main.c プロジェクト: cham-s/minishell
int		main(int ac, char **av, char **env)
{
	t_cmd	cmd;
	t_dict	*envc;

	(void)ac;
	(void)av;
	signal(SIGINT, sig_handler);
	envc = envcpy(env);
	init_tokens();
	interpret_command(envc, &cmd);
	dict_destroy(g_tokens);
	dict_destroy(envc);
	cmd_free(&cmd);
	return (0);
}
コード例 #3
0
ファイル: sysproc.c プロジェクト: srk-cmu/9problems
uintptr
sysrfork(va_list list)
{
	Proc *p;
	int n, i;
	Fgrp *ofg;
	Pgrp *opg;
	Rgrp *org;
	Egrp *oeg;
	ulong pid, flag;
	Mach *wm;

	flag = va_arg(list, ulong);
	/* Check flags before we commit */
	if((flag & (RFFDG|RFCFDG)) == (RFFDG|RFCFDG))
		error(Ebadarg);
	if((flag & (RFNAMEG|RFCNAMEG)) == (RFNAMEG|RFCNAMEG))
		error(Ebadarg);
	if((flag & (RFENVG|RFCENVG)) == (RFENVG|RFCENVG))
		error(Ebadarg);

	if((flag&RFPROC) == 0) {
		if(flag & (RFMEM|RFNOWAIT))
			error(Ebadarg);
		if(flag & (RFFDG|RFCFDG)) {
			ofg = up->fgrp;
			if(flag & RFFDG)
				up->fgrp = dupfgrp(ofg);
			else
				up->fgrp = dupfgrp(nil);
			closefgrp(ofg);
		}
		if(flag & (RFNAMEG|RFCNAMEG)) {
			opg = up->pgrp;
			up->pgrp = newpgrp();
			if(flag & RFNAMEG)
				pgrpcpy(up->pgrp, opg);
			/* inherit noattach */
			up->pgrp->noattach = opg->noattach;
			closepgrp(opg);
		}
		if(flag & RFNOMNT)
			up->pgrp->noattach = 1;
		if(flag & RFREND) {
			org = up->rgrp;
			up->rgrp = newrgrp();
			closergrp(org);
		}
		if(flag & (RFENVG|RFCENVG)) {
			oeg = up->egrp;
			up->egrp = smalloc(sizeof(Egrp));
			up->egrp->ref = 1;
			if(flag & RFENVG)
				envcpy(up->egrp, oeg);
			closeegrp(oeg);
		}
		if(flag & RFNOTEG)
			up->noteid = pidalloc(0);
		return 0;
	}

	p = newproc();

	p->scallnr = up->scallnr;
	p->s = up->s;
	p->nerrlab = 0;
	p->slash = up->slash;
	p->dot = up->dot;
	incref(p->dot);

	memmove(p->note, up->note, sizeof(p->note));
	p->privatemem = up->privatemem;
	p->noswap = up->noswap;
	p->nnote = up->nnote;
	p->notified = 0;
	p->lastnote = up->lastnote;
	p->notify = up->notify;
	p->ureg = up->ureg;
	p->dbgreg = 0;

	/* Abort the child process on error */
	if(waserror()){
		p->kp = 1;
		kprocchild(p, abortion, 0);
		ready(p);
		nexterror();
	}

	/* Make a new set of memory segments */
	n = flag & RFMEM;
	qlock(&p->seglock);
	if(waserror()){
		qunlock(&p->seglock);
		nexterror();
	}
	for(i = 0; i < NSEG; i++)
		if(up->seg[i] != nil)
			p->seg[i] = dupseg(up->seg, i, n);
	qunlock(&p->seglock);
	poperror();

	/* File descriptors */
	if(flag & (RFFDG|RFCFDG)) {
		if(flag & RFFDG)
			p->fgrp = dupfgrp(up->fgrp);
		else
			p->fgrp = dupfgrp(nil);
	}
	else {
		p->fgrp = up->fgrp;
		incref(p->fgrp);
	}

	/* Process groups */
	if(flag & (RFNAMEG|RFCNAMEG)) {
		p->pgrp = newpgrp();
		if(flag & RFNAMEG)
			pgrpcpy(p->pgrp, up->pgrp);
		/* inherit noattach */
		p->pgrp->noattach = up->pgrp->noattach;
	}
	else {
		p->pgrp = up->pgrp;
		incref(p->pgrp);
	}
	if(flag & RFNOMNT)
		p->pgrp->noattach = 1;

	if(flag & RFREND)
		p->rgrp = newrgrp();
	else {
		incref(up->rgrp);
		p->rgrp = up->rgrp;
	}

	/* Environment group */
	if(flag & (RFENVG|RFCENVG)) {
		p->egrp = smalloc(sizeof(Egrp));
		p->egrp->ref = 1;
		if(flag & RFENVG)
			envcpy(p->egrp, up->egrp);
	}
	else {
		p->egrp = up->egrp;
		incref(p->egrp);
	}
	p->hang = up->hang;
	p->procmode = up->procmode;
	if(up->procctl == Proc_tracesyscall)
		p->procctl = Proc_tracesyscall;

	poperror();	/* abortion */

	/* Craft a return frame which will cause the child to pop out of
	 * the scheduler in user mode with the return register zero
	 */
	forkchild(p, up->dbgreg);

	p->parent = up;
	if((flag&RFNOWAIT) == 0){
		p->parentpid = up->pid;
		lock(&up->exl);
		up->nchild++;
		unlock(&up->exl);
	}
	if((flag&RFNOTEG) == 0)
		p->noteid = up->noteid;

	pid = p->pid;
	memset(p->time, 0, sizeof(p->time));
	p->time[TReal] = MACHP(0)->ticks;

	kstrdup(&p->text, up->text);
	kstrdup(&p->user, up->user);

	procfork(p);

	/*
	 *  since the bss/data segments are now shareable,
	 *  any mmu info about this process is now stale
	 *  (i.e. has bad properties) and has to be discarded.
	 */
	flushmmu();
	p->basepri = up->basepri;
	p->priority = up->basepri;
	p->fixedpri = up->fixedpri;
	p->mp = up->mp;
	wm = up->wired;
	if(wm)
		procwired(p, wm->machno);
	ready(p);
	sched();
	return pid;
}