X-Git-Url: https://www.tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=lib%2Fpidfile.c;h=250f67b75ccf5b3c3d80023873dedb456670bdfb;hp=2f30a4e8aca14aa7e5dd07e097be96120535420f;hb=161f917dd03c174742fb8c6722f430a93b506cb1;hpb=1243156a5e03a666b36bc4400f1402243a85c9a7

diff --git a/lib/pidfile.c b/lib/pidfile.c
index 2f30a4e8..250f67b7 100644
--- a/lib/pidfile.c
+++ b/lib/pidfile.c
@@ -32,6 +32,9 @@
 #include <string.h>
 #include <errno.h>
 #include <signal.h>
+#include <sys/types.h>
+#include <signal.h>
+#include <fcntl.h>
 
 /* read_pid
  *
@@ -71,6 +74,7 @@ int check_pid (char *pidfile)
    * be found -- GW
    */
   /* But... errno is usually changed only on error.. */
+  errno = 0;
   if (kill(pid, 0) && errno == ESRCH)
 	  return(0);
 
@@ -93,13 +97,15 @@ int write_pid (char *pidfile)
       fprintf(stderr, "Can't open or create %s.\n", pidfile);
       return 0;
   }
-
+  
+#ifdef HAVE_FLOCK
   if (flock(fd, LOCK_EX|LOCK_NB) == -1) {
       fscanf(f, "%d", &pid);
       fclose(f);
       printf("Can't lock, lock is held by pid %d.\n", pid);
       return 0;
   }
+#endif
 
   pid = getpid();
   if (!fprintf(f,"%d\n", pid)) {
@@ -109,11 +115,13 @@ int write_pid (char *pidfile)
   }
   fflush(f);
 
+#ifdef HAVE_FLOCK
   if (flock(fd, LOCK_UN) == -1) {
       printf("Can't unlock pidfile %s, %s.\n", pidfile, strerror(errno));
       close(fd);
       return 0;
   }
+#endif
   close(fd);
 
   return pid;