new lock/unlock code (call lib routine), minor fixes

diff --git a/pppd/sys-aix4.c b/pppd/sys-aix4.c
index ca3144d35a8bf7d6fe8ed4f5318e9207e09f4e06..897d24ace5de561b164684f4f6acb7b0481fb56b 100644 (file)
--- a/pppd/sys-aix4.c
+++ b/pppd/sys-aix4.c
@@ -19,7 +19,7 @@
  */
 
 #ifndef lint
-static char rcsid[] = "$Id: sys-aix4.c,v 1.2 1995/04/24 05:33:43 paulus Exp $";
+static char rcsid[] = "$Id: sys-aix4.c,v 1.3 1995/04/24 05:50:43 paulus Exp $";
 #endif
 
 /*
@@ -27,7 +27,9 @@ static char rcsid[] = "$Id: sys-aix4.c,v 1.2 1995/04/24 05:33:43 paulus Exp $";
  */
 
 #include <stdio.h>
+/*
 #include <stdlib.h>
+*/
 #include <errno.h>
 #include <syslog.h>
 #include <termios.h>
@@ -200,7 +202,7 @@ establish_ppp()
        int i;
 
        for (i = 0; i <= 2; ++i)
-           if (i != fd && i != s)
+           if (i != fd && i != sockfd)
                close(i);
        closed_stdio = 1;
     }
@@ -1129,95 +1131,38 @@ logwtmp(line, name, host)
 
 /*
  * Code for locking/unlocking the serial device.
- * This code is derived from chat.c.
  */
 
-#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 */
+static char *devlocked = (char *) 0;
 
-/*
- * lock - create a lock file for the named device.
- */
-int
-lock(dev)
-    char *dev;
+int lock(char *device)
 {
-    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;
-    }
+    char       *devname;
+    int                rc;
 
-#ifdef PIDSTRING
-    sprintf(hdb_lock_buffer, "%10d\n", getpid());
-    write(fd, hdb_lock_buffer, 11);
-#else
-    pid = getpid();
-    write(fd, &pid, sizeof pid);
-#endif
+    if (devname = strrchr(device,'/'))
+       ++devname;
+    else
+       devname = device;
 
-    close(fd);
-    return 0;
+    if ((rc = ttylock(devname)) == 0) {
+       devlocked = (char *) malloc(strlen(devname) + 1);
+       sprintf(devlocked,"%s",devname);
+    } else
+       devlocked = (char *) 0;
+
+    return(rc);
 }
 
-/*
- *     Remove our lockfile
- */
-unlock()
+int unlock()
 {
-    if (lock_file) {
-       unlink(lock_file);
-       free(lock_file);
-       lock_file = NULL;
+    int rc = 0;
+
+    if (devlocked) {
+       rc = ttyunlock(devlocked);
+       free(devlocked);
+       devlocked = (char *) 0;
     }
+    return(rc);
 }
+