[unix-history] / usr / src / usr.bin / tip / hunt.c

/*	hunt.c	4.1	81/05/09	*/
#include "tip.h"

#define RD	04

extern char *getremote();
extern char *rindex();

int deadfl;

dead()
{
	deadfl = 1;
}

hunt(name)
char *name;
{
	register char *cp;

	deadfl = 0;
	signal(SIGALRM, dead);
	while(cp = getremote(name)){
		if (access(cp, RD))
			continue;
		uucplock = rindex(cp, '/')+1;
		if (mlock(uucplock) < 0) {
			delock(uucplock);
			continue;
		}
		alarm(10);
		if((FD = open(cp, 2)) >= 0){
			alarm(0);
			if(deadfl)
				continue;
			ioctl(FD, TIOCEXCL, 0);
			break;
		}
		alarm(0);
		signal(SIGALRM, dead);
	}
	alarm(0);
	signal(SIGALRM, SIG_DFL);
	if(deadfl)
		return(-1);
	return((int)cp);
}
Commit	Line	Data
60d5f7dd BJ	1	/* hunt.c 4.1 81/05/09 */
	2	#include "tip.h"
	3
	4	#define RD 04
	5
	6	extern char *getremote();
	7	extern char *rindex();
	8
	9	int deadfl;
	10
	11	dead()
	12	{
	13	deadfl = 1;
	14	}
	15
	16	hunt(name)
	17	char *name;
	18	{
	19	register char *cp;
	20
	21	deadfl = 0;
	22	signal(SIGALRM, dead);
	23	while(cp = getremote(name)){
	24	if (access(cp, RD))
	25	continue;
	26	uucplock = rindex(cp, '/')+1;
	27	if (mlock(uucplock) < 0) {
	28	delock(uucplock);
	29	continue;
	30	}
	31	alarm(10);
	32	if((FD = open(cp, 2)) >= 0){
	33	alarm(0);
	34	if(deadfl)
	35	continue;
	36	ioctl(FD, TIOCEXCL, 0);
	37	break;
	38	}
	39	alarm(0);
	40	signal(SIGALRM, dead);
	41	}
	42	alarm(0);
	43	signal(SIGALRM, SIG_DFL);
	44	if(deadfl)
	45	return(-1);
	46	return((int)cp);
	47	}