2989 Eliminate use of LOGNAME_MAX in ON
1166 useradd have warning with name more 8 chars

*** 18,36 ****
   *
   * CDDL HEADER END
   */
  
  /*
   * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
  /*      Copyright (c) 1988 AT&T */
  /*        All Rights Reserved   */
  
- #pragma ident   "%Z%%M% %I%     %E% SMI"
- 
  #pragma weak _getlogin = getlogin
  #pragma weak _getlogin_r = getlogin_r
  
  #include "lint.h"
  #include <sys/types.h>
--- 18,36 ----
   *
   * CDDL HEADER END
   */
  
  /*
+  * Copyright (c) 2013 Gary Mills
+  *
   * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
  /*      Copyright (c) 1988 AT&T */
  /*        All Rights Reserved   */
  
  #pragma weak _getlogin = getlogin
  #pragma weak _getlogin_r = getlogin_r
  
  #include "lint.h"
  #include <sys/types.h>
*** 46,58 ****
  #include <synch.h>
  #include <mtlib.h>
  #include "tsd.h"
  
  /*
!  * XXX - _POSIX_LOGIN_NAME_MAX limits the length of a login name.  The utmpx
!  * interface provides for a 32 character login name, but for the sake of
!  * compatibility, we are still using the old utmp-imposed limit.
   */
  
  /*
   * POSIX.1c Draft-6 version of the function getlogin_r.
   * It was implemented by Solaris 2.3.
--- 46,57 ----
  #include <synch.h>
  #include <mtlib.h>
  #include "tsd.h"
  
  /*
!  * Use the full length of a login name, from LOGIN_NAME_MAX .
!  * The utmpx interface provides for a 32 character login name.
   */
  
  /*
   * POSIX.1c Draft-6 version of the function getlogin_r.
   * It was implemented by Solaris 2.3.
*** 62,71 ****
--- 61,71 ----
  {
          int             uf;
          off64_t         me;
          struct futmpx   ubuf;
  
+         /* Required minimum */
          if (namelen < _POSIX_LOGIN_NAME_MAX) {
                  errno = ERANGE;
                  return (NULL);
          }
  
*** 79,91 ****
                  return (NULL);
          }
          (void) close(uf);
          if (ubuf.ut_user[0] == '\0')
                  return (NULL);
          (void) strncpy(&answer[0], &ubuf.ut_user[0],
!             _POSIX_LOGIN_NAME_MAX - 1);
!         answer[_POSIX_LOGIN_NAME_MAX - 1] = '\0';
          return (&answer[0]);
  }
  
  /*
   * POSIX.1c standard version of the function getlogin_r.
--- 79,97 ----
                  return (NULL);
          }
          (void) close(uf);
          if (ubuf.ut_user[0] == '\0')
                  return (NULL);
+ 
+         /* Insufficient buffer size */
+         if (namelen < strnlen(&ubuf.ut_user[0], LOGIN_NAME_MAX - 1)) {
+                 errno = ERANGE;
+                 return (NULL);
+         }
          (void) strncpy(&answer[0], &ubuf.ut_user[0],
!             LOGIN_NAME_MAX - 1);
!         answer[LOGIN_NAME_MAX - 1] = '\0';
          return (&answer[0]);
  }
  
  /*
   * POSIX.1c standard version of the function getlogin_r.
*** 109,119 ****
  }
  
  char *
  getlogin(void)
  {
!         char *answer = tsdalloc(_T_LOGIN, _POSIX_LOGIN_NAME_MAX, NULL);
  
          if (answer == NULL)
                  return (NULL);
!         return (getlogin_r(answer, _POSIX_LOGIN_NAME_MAX));
  }
--- 115,125 ----
  }
  
  char *
  getlogin(void)
  {
!         char *answer = tsdalloc(_T_LOGIN, LOGIN_NAME_MAX, NULL);
  
          if (answer == NULL)
                  return (NULL);
!         return (getlogin_r(answer, LOGIN_NAME_MAX));
  }