/* this functions opens and configure the serial port */
void cfgport(void)
{
if ((portfd = open(cfg.port, O_RDWR)) == -1) {
printFatal("Unable to open serial port");
}
/* these functions, declared on sysdep1.c
* configure the serial port
* these functions are from minicom source */
m_savestate(portfd);
m_setparms(portfd, cfg.baudrate, cfg.parity, cfg.databits, 1, 0);
m_nohang(portfd);
m_hupcl(portfd, 1);
m_flush(portfd);
}
/*
* Open the terminal.
*
* \return -1 on error, 0 on success
*/
int open_term(int doinit, int show_win_on_error, int no_msgs)
{
struct stat stt;
union {
char bytes[128];
int kermit;
} buf;
int fd, n = 0;
int pid;
#ifdef HAVE_ERRNO_H
int s_errno;
#endif
#ifdef USE_SOCKET
#define SOCKET_PREFIX "unix#"
portfd_is_socket = portfd_is_connected = 0;
if (strncmp(dial_tty, SOCKET_PREFIX, strlen(SOCKET_PREFIX)) == 0) {
portfd_is_socket = 1;
}
#endif
if (portfd_is_socket)
goto nolock;
#if !HAVE_LOCKDEV
/* First see if the lock file directory is present. */
if (P_LOCK[0] && stat(P_LOCK, &stt) == 0) {
#ifdef SVR4_LOCKS
stat(dial_tty, &stt);
sprintf(lockfile, "%s/LK.%03d.%03d.%03d",
P_LOCK, major(stt.st_dev),
major(stt.st_rdev), minor(stt.st_rdev));
#else /* SVR4_LOCKS */
snprintf(lockfile, sizeof(lockfile),
"%s/LCK..%s",
P_LOCK, mdevlockname(dial_tty, buf.bytes, sizeof(buf.bytes)));
#endif /* SVR4_LOCKS */
}
else
lockfile[0] = 0;
if (doinit > 0 && lockfile[0] && (fd = open(lockfile, O_RDONLY)) >= 0) {
n = read(fd, buf.bytes, 127);
close(fd);
if (n > 0) {
pid = -1;
if (n == 4)
/* Kermit-style lockfile. */
pid = buf.kermit;
else {
/* Ascii lockfile. */
buf.bytes[n] = 0;
sscanf(buf.bytes, "%d", &pid);
}
if (pid > 0 && kill((pid_t)pid, 0) < 0 &&
errno == ESRCH) {
fprintf(stderr, _("Lockfile is stale. Overriding it..\n"));
sleep(1);
unlink(lockfile);
} else
n = 0;
}
if (n == 0) {
if (stdwin)
mc_wclose(stdwin, 1);
fprintf(stderr, _("Device %s is locked.\n"), dial_tty);
return -1;
}
}
#endif
if (doinit > 0 && lockfile_create(no_msgs) != 0)
return -1;
nolock:
/* Run a special program to disable callin if needed. */
if (doinit > 0 && P_CALLOUT[0]) {
if (fastsystem(P_CALLOUT, NULL, NULL, NULL) < 0) {
if (stdwin)
mc_wclose(stdwin, 1);
fprintf(stderr, _("Could not setup for dial out.\n"));
lockfile_remove();
return -1;
}
}
/* Now open the tty device. */
if (setjmp(albuf) == 0) {
portfd = -1;
signal(SIGALRM, get_alrm);
alarm(20);
#ifdef USE_SOCKET
if (portfd_is_socket) {
portfd_sock_addr.sun_family = AF_UNIX;
strncpy(portfd_sock_addr.sun_path,
dial_tty + strlen(SOCKET_PREFIX),
sizeof(portfd_sock_addr.sun_path)-1);
portfd_sock_addr.sun_path[sizeof(portfd_sock_addr.sun_path)-1] = 0;
term_socket_connect();
}
#endif /* USE_SOCKET */
if (!portfd_is_socket) {
#if defined(O_NDELAY) && defined(F_SETFL)
portfd = open(dial_tty, O_RDWR|O_NDELAY|O_NOCTTY);
if (portfd >= 0) {
/* Cancel the O_NDELAY flag. */
n = fcntl(portfd, F_GETFL, 0);
fcntl(portfd, F_SETFL, n & ~O_NDELAY);
}
#else
if (portfd < 0)
portfd = open(dial_tty, O_RDWR|O_NOCTTY);
#endif
}
if (portfd >= 0) {
if (doinit > 0)
m_savestate(portfd);
port_init();
}
}
#ifdef HAVE_ERRNO_H
s_errno = errno;
#endif
alarm(0);
signal(SIGALRM, SIG_IGN);
if (portfd < 0 && !portfd_is_socket) {
if (!no_msgs) {
if (doinit > 0) {
if (stdwin)
mc_wclose(stdwin, 1);
#ifdef HAVE_ERRNO_H
fprintf(stderr, _("minicom: cannot open %s: %s\n"),
dial_tty, strerror(s_errno));
#else
fprintf(stderr, _("minicom: cannot open %s. Sorry.\n"), dial_tty);
#endif
lockfile_remove();
return -1;
}
if (show_win_on_error)
werror(_("Cannot open %s!"), dial_tty);
}
lockfile_remove();
return -1;
}
/* Set CLOCAL mode */
m_nohang(portfd);
/* Set Hangup on Close if program crashes. (Hehe) */
m_hupcl(portfd, 1);
if (doinit > 0)
m_flush(portfd);
return 0;
}
