static pid_t _spawnveg(Shell_t *shp,const char *path, char* const argv[], char* const envp[], pid_t pgid)
{
pid_t pid;
while(1)
{
sh_stats(STAT_SPAWN);
pid = spawnveg(path,argv,envp,pgid);
if(pid>=0 || errno!=EAGAIN)
break;
}
return(pid);
}
static int
initiate(Cs_t* state, const char* svc, char* cmd)
{
pid_t pid;
pid_t n;
char* av[3];
#ifdef SIGCHLD
Handler_t fun;
children = 0;
if ((fun = signal(SIGCHLD, child)) == SIG_DFL) signal(SIGCHLD, fun);
else if (children) children++;
#endif
pathcanon(cmd, 0, 0);
av[0] = cmd;
av[1] = (char*)svc;
av[2] = 0;
if ((pid = spawnveg(av[0], av, environ, 0)) == -1)
{
messagef((state->id, NiL, -1, "local: %s: cannot initiate %s", svc, cmd));
return -1;
}
while ((n = waitpid(pid, NiL, 0)) == -1 && errno == EINTR);
#ifdef SIGCHLD
if (fun != SIG_DFL)
{
signal(SIGCHLD, fun);
if (fun != SIG_IGN)
while (--children > 0)
(*fun)(SIGCHLD);
}
#endif
/*
* yuk: looks like we have to give fdp services time
* to start up -- a few seconds shouldn't hurt
*/
sleep(2);
return n;
}
static pid_t _spawnveg(Shell_t *shp,const char *path, char* const argv[], char* const envp[], pid_t pgid)
{
pid_t pid;
#ifdef SIGTSTP
if(job.jobcontrol)
{
signal(SIGTTIN,SIG_DFL);
signal(SIGTTOU,SIG_DFL);
}
#endif /* SIGTSTP */
while(1)
{
sh_stats(STAT_SPAWN);
#ifdef SPAWN_cwd
{
char *arg0 = argv[0], **av0= (char**)&argv[0];
int fd;
pid = spawnvex(path,argv,envp,shp->vex);
*av0 = arg0;
if(pid>0 && shp->comsub && (fd=sffileno(sfstdout))!=1 && fd>=0)
spawnvex_add(shp->vex, fd, 1,0,0);
}
#else
pid = spawnveg(path,argv,envp,pgid);
#endif /* SPAWN_cwd */
if(pid>=0 || errno!=EAGAIN)
break;
}
#ifdef SIGTSTP
if(job.jobcontrol)
{
signal(SIGTTIN,SIG_IGN);
signal(SIGTTOU,SIG_IGN);
}
#endif /* SIGTSTP */
return(pid);
}
