*/
#ifndef lint
-static char rcsid[] = "$Id: sys-str.c,v 1.16 1994/10/24 04:30:35 paulus Exp $";
+static char rcsid[] = "$Id: sys-str.c,v 1.17 1995/04/24 05:36:14 paulus Exp $";
#endif
/*
*/
#include <stdio.h>
+#include <stdlib.h>
#include <errno.h>
#include <syslog.h>
#include <termios.h>
#include <sys/stream.h>
#include <sys/stropts.h>
+#include <arpa/inet.h>
#include <net/if.h>
#include <net/ppp_defs.h>
#include <net/ppp_str.h>
static int restore_term; /* 1 => we've munged the terminal */
static struct termios inittermios; /* Initial TTY termios */
+int sockfd; /* socket for doing interface ioctls */
+static char *lock_file; /* lock file created for serial port */
+
/*
* sys_init - System-dependent initialization.
*/
setlogmask(LOG_UPTO(LOG_INFO));
if (debug)
setlogmask(LOG_UPTO(LOG_DEBUG));
+
+ /* Get an internet socket for doing socket ioctl's on. */
+ if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
+ syslog(LOG_ERR, "Couldn't create IP socket: %m");
+ die(1);
+ }
}
/*
int i;
for (i = 0; i <= 2; ++i)
- if (i != fd && i != s)
+ if (i != fd && i != sockfd)
close(i);
closed_stdio = 1;
}
syslog(LOG_WARNING, "All received characters had %s", s);
}
}
- }
- while (ioctl(fd, I_POP, 0) == 0) /* pop any we pushed */
- ;
- pushed_ppp = 0;
+ while (ioctl(fd, I_POP, 0) == 0) /* pop any we pushed */
+ ;
- for (; str_module_count > 0; str_module_count--) {
- if (ioctl(fd, I_PUSH, str_modules[str_module_count-1].modname)) {
- if (errno != ENXIO)
- syslog(LOG_WARNING, "str_restore: couldn't push module %s: %m",
- str_modules[str_module_count-1].modname);
- } else {
- MAINDEBUG((LOG_INFO, "str_restore: pushed module %s",
- str_modules[str_module_count-1].modname));
+ for (; str_module_count > 0; str_module_count--) {
+ if (ioctl(fd, I_PUSH, str_modules[str_module_count-1].modname)) {
+ if (errno != ENXIO)
+ syslog(LOG_WARNING, "Couldn't restore module %s: %m",
+ str_modules[str_module_count-1].modname);
+ } else {
+ MAINDEBUG((LOG_INFO, "str_restore: pushed module %s",
+ str_modules[str_module_count-1].modname));
+ }
}
+ pushed_ppp = 0;
}
}
strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
ifr.ifr_mtu = mtu;
- if (ioctl(s, SIOCSIFMTU, (caddr_t) &ifr) < 0) {
+ if (ioctl(sockfd, SIOCSIFMTU, (caddr_t) &ifr) < 0) {
syslog(LOG_ERR, "ioctl(SIOCSIFMTU): %m");
quit();
}
struct npioctl npi;
strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
- if (ioctl(s, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
+ if (ioctl(sockfd, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
syslog(LOG_ERR, "ioctl (SIOCGIFFLAGS): %m");
return 0;
}
ifr.ifr_flags |= IFF_UP;
- if (ioctl(s, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) {
+ if (ioctl(sockfd, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) {
syslog(LOG_ERR, "ioctl(SIOCSIFFLAGS): %m");
return 0;
}
}
strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
- if (ioctl(s, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
+ if (ioctl(sockfd, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
syslog(LOG_ERR, "ioctl (SIOCGIFFLAGS): %m");
rv = 0;
} else {
ifr.ifr_flags &= ~IFF_UP;
- if (ioctl(s, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) {
+ if (ioctl(sockfd, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) {
syslog(LOG_ERR, "ioctl(SIOCSIFFLAGS): %m");
rv = 0;
}
strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
SET_SA_FAMILY(ifr.ifr_addr, AF_INET);
((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr.s_addr = o;
- if (ioctl(s, SIOCSIFADDR, (caddr_t) &ifr) < 0) {
+ if (ioctl(sockfd, SIOCSIFADDR, (caddr_t) &ifr) < 0) {
syslog(LOG_ERR, "ioctl(SIOCSIFADDR): %m");
ret = 0;
}
((struct sockaddr_in *) &ifr.ifr_dstaddr)->sin_addr.s_addr = h;
- if (ioctl(s, SIOCSIFDSTADDR, (caddr_t) &ifr) < 0) {
+ if (ioctl(sockfd, SIOCSIFDSTADDR, (caddr_t) &ifr) < 0) {
syslog(LOG_ERR, "ioctl(SIOCSIFDSTADDR): %m");
ret = 0;
}
if (m != 0) {
((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr.s_addr = m;
syslog(LOG_INFO, "Setting interface mask to %s\n", ip_ntoa(m));
- if (ioctl(s, SIOCSIFNETMASK, (caddr_t) &ifr) < 0) {
+ if (ioctl(sockfd, SIOCSIFNETMASK, (caddr_t) &ifr) < 0) {
syslog(LOG_ERR, "ioctl(SIOCSIFNETMASK): %m");
ret = 0;
}
SET_SA_FAMILY(rt.rt_gateway, AF_INET);
((struct sockaddr_in *) &rt.rt_gateway)->sin_addr.s_addr = o;
rt.rt_flags = RTF_HOST;
- if (ioctl(s, SIOCDELRT, (caddr_t) &rt) < 0) {
+ if (ioctl(sockfd, SIOCDELRT, (caddr_t) &rt) < 0) {
syslog(LOG_ERR, "ioctl(SIOCDELRT): %m");
return 0;
}
SET_SA_FAMILY(rt.rt_gateway, AF_INET);
((struct sockaddr_in *) &rt.rt_gateway)->sin_addr.s_addr = g;
rt.rt_flags = RTF_GATEWAY;
- if (ioctl(s, SIOCADDRT, &rt) < 0) {
+ if (ioctl(sockfd, SIOCADDRT, &rt) < 0) {
syslog(LOG_ERR, "default route ioctl(SIOCADDRT): %m");
return 0;
}
SET_SA_FAMILY(rt.rt_gateway, AF_INET);
((struct sockaddr_in *) &rt.rt_gateway)->sin_addr.s_addr = g;
rt.rt_flags = RTF_GATEWAY;
- if (ioctl(s, SIOCDELRT, &rt) < 0) {
+ if (ioctl(sockfd, SIOCDELRT, &rt) < 0) {
syslog(LOG_ERR, "default route ioctl(SIOCDELRT): %m");
return 0;
}
SET_SA_FAMILY(arpreq.arp_pa, AF_INET);
((struct sockaddr_in *) &arpreq.arp_pa)->sin_addr.s_addr = hisaddr;
arpreq.arp_flags = ATF_PERM | ATF_PUBL;
- if (ioctl(s, SIOCSARP, (caddr_t)&arpreq) < 0) {
+ if (ioctl(sockfd, SIOCSARP, (caddr_t)&arpreq) < 0) {
syslog(LOG_ERR, "ioctl(SIOCSARP): %m");
return 0;
}
BZERO(&arpreq, sizeof(arpreq));
SET_SA_FAMILY(arpreq.arp_pa, AF_INET);
((struct sockaddr_in *) &arpreq.arp_pa)->sin_addr.s_addr = hisaddr;
- if (ioctl(s, SIOCDARP, (caddr_t)&arpreq) < 0) {
+ if (ioctl(sockfd, SIOCDARP, (caddr_t)&arpreq) < 0) {
syslog(LOG_ERR, "ioctl(SIOCDARP): %m");
return 0;
}
#include <fcntl.h>
#include <nlist.h>
#include <kvm.h>
-#include <arpa/inet.h>
/* XXX SunOS 4.1 defines this and 3.5 doesn't... */
#ifdef _nlist_h
}
close(fd);
}
+
+/*
+ * Code for locking/unlocking the serial device.
+ * This code is derived from chat.c.
+ */
+
+#if defined(SUNOS) && SUNOS >= 41 && !defined(HDB)
+#define HDB 1
+#endif
+
+#ifndef LOCK_DIR
+# ifdef HDB
+# define PIDSTRING
+# define LOCK_PREFIX "/usr/spool/locks/LCK.."
+# else /* HDB */
+# define LOCK_PREFIX "/usr/spool/uucp/LCK.."
+# endif /* HDB */
+#endif /* LOCK_DIR */
+
+/*
+ * lock - create a lock file for the named device.
+ */
+int
+lock(dev)
+ char *dev;
+{
+ char hdb_lock_buffer[12];
+ int fd, pid, n;
+ char *p;
+
+ if ((p = strrchr(dev, '/')) != NULL)
+ dev = p + 1;
+ lock_file = malloc(strlen(LOCK_PREFIX) + strlen(dev) + 1);
+ if (lock_file == NULL)
+ novm("lock file name");
+ strcat(strcpy(lock_file, LOCK_PREFIX), dev);
+
+ while ((fd = open(lock_file, O_EXCL | O_CREAT | O_RDWR, 0644)) < 0) {
+ if (errno == EEXIST
+ && (fd = open(lock_file, O_RDONLY, 0)) >= 0) {
+ /* Read the lock file to find out who has the device locked */
+#ifdef PIDSTRING
+ n = read(fd, hdb_lock_buffer, 11);
+ if (n > 0) {
+ hdb_lock_buffer[n] = 0;
+ pid = atoi(hdb_lock_buffer);
+ }
+#else
+ n = read(fd, &pid, sizeof(pid));
+#endif
+ if (n <= 0) {
+ syslog(LOG_ERR, "Can't read pid from lock file %s", lock_file);
+ close(fd);
+ } else {
+ if (kill(pid, 0) == -1 && errno == ESRCH) {
+ /* pid no longer exists - remove the lock file */
+ if (unlink(lock_file) == 0) {
+ close(fd);
+ syslog(LOG_NOTICE, "Removed stale lock on %s (pid %d)",
+ dev, pid);
+ continue;
+ } else
+ syslog(LOG_WARNING, "Couldn't remove stale lock on %s",
+ dev);
+ } else
+ syslog(LOG_NOTICE, "Device %s is locked by pid %d",
+ dev, pid);
+ }
+ close(fd);
+ } else
+ syslog(LOG_ERR, "Can't create lock file %s: %m", lock_file);
+ free(lock_file);
+ lock_file = NULL;
+ return -1;
+ }
+
+#ifdef PIDSTRING
+ sprintf(hdb_lock_buffer, "%10d\n", getpid());
+ write(fd, hdb_lock_buffer, 11);
+#else
+ pid = getpid();
+ write(fd, &pid, sizeof pid);
+#endif
+
+ close(fd);
+ return 0;
+}
+
+/*
+ * unlock - remove our lockfile
+ */
+void
+unlock()
+{
+ if (lock_file) {
+ unlink(lock_file);
+ free(lock_file);
+ lock_file = NULL;
+ }
+}