1 files changed, 27 insertions, 0 deletions
diff --git a/riemann.fmi.uni-sofia.bg/ngetty/ngetty-1.1/utmp_io.c b/riemann.fmi.uni-sofia.bg/ngetty/ngetty-1.1/utmp_io.c
new file mode 100644
index 0000000..9470909
--- /dev/null
+++ b/riemann.fmi.uni-sofia.bg/ngetty/ngetty-1.1/utmp_io.c
@@ -0,0 +1,27 @@
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+#include "lib.h"
+
+/* type:  F_RDLCK or F_WRLCK */
+struct utmp_type *utmp_io(int fd, struct utmp_type *ut, int type) /*EXTRACT_INCL*/ {
+  struct flock fl;
+  int len;
+  
+  fl.l_whence	= SEEK_CUR; 
+  fl.l_start	= 0;
+  fl.l_len	= UTMP_SIZE;
+  fl.l_pid	= 0;
+  fl.l_type	= type;
+  
+  if (fcntl(fd, F_SETLKW, &fl)) return 0;
+  len = const_io((type==F_WRLCK) ? (int(*)())write : (int(*)())read,  
+		 fd, ut, UTMP_SIZE);
+
+  fl.l_start	= -UTMP_SIZE;
+  fl.l_type	= F_UNLCK;
+
+  fcntl(fd, F_SETLK, &fl);
+
+  return  (len) ? 0 : ut;
+}