The following two patches are security patches as discussed in CERT advisory
CA:96-08.pcnfsd dated April 18th.

*** /tmp/T0a005Z3	Fri Apr 19 14:50:43 1996
--- pcnfsd_misc.c	Fri Apr 19 14:37:00 1996
***************
*** 114,120 ****
  int suspicious (s)
  char *s;
  {
! 	if(strpbrk(s, ";|&<>`'#!?*()[]^/") != NULL)
  		return 1;
  	return 0;
  }
--- 114,120 ----
  int suspicious (s)
  char *s;
  {
! 	if(strpbrk(s, ";|&<>`'#!?*()[]^/${}\n\r\"\\:") != NULL)
  		return 1;
  	return 0;
  }
*** /tmp/T0a002c1	Fri Apr  5 13:14:50 1996
--- pcnfsd_print.c	Fri Apr  5 13:14:46 1996
***************
*** 221,226 ****
--- 221,227 ----
  {
  int    dir_mode = 0777;
  int rc;
+ mode_t oldmask;
  
  	*sp = &pathname[0];
  	pathname[0] = '\0';
***************
*** 231,241 ****
  	/* get pathname of current directory and return to client */
  
  	(void)sprintf(pathname,"%s/%s",sp_name, sys);
  	(void)mkdir(sp_name, dir_mode);	/* ignore the return code */
- 	(void)chmod(sp_name, dir_mode);
  	rc = mkdir(pathname, dir_mode);	/* DON'T ignore this return code */
  	if((rc < 0 && errno != EEXIST) ||
- 	   (chmod(pathname, dir_mode) != 0) ||
  	   (stat(pathname, &statbuf) != 0) ||
  	   !(statbuf.st_mode & S_IFDIR)) {
  	   (void)sprintf(tempstr,
--- 232,242 ----
  	/* get pathname of current directory and return to client */
  
  	(void)sprintf(pathname,"%s/%s",sp_name, sys);
+ 	oldmask = umask(0);
  	(void)mkdir(sp_name, dir_mode);	/* ignore the return code */
  	rc = mkdir(pathname, dir_mode);	/* DON'T ignore this return code */
+ 	umask(oldmask);
  	if((rc < 0 && errno != EEXIST) ||
  	   (stat(pathname, &statbuf) != 0) ||
  	   !(statbuf.st_mode & S_IFDIR)) {
  	   (void)sprintf(tempstr,
***************
*** 381,387 ****
  		   ** filter with the appropriate arguments.
                     **------------------------------------------------------
  		   */
! 		   (void)run_ps630(new_pathname, opts);
  		   }
  		/*
  		** Try to match to an aliased printer
--- 382,391 ----
  		   ** filter with the appropriate arguments.
                     **------------------------------------------------------
  		   */
! 		   (void)sprintf(tempstr,
! 			"rpc.pcnfsd: ps630 filter disabled for %s\n", pathname);
! 			msg_out(tempstr);
! 			return(PS_RES_FAIL);
  		   }
  		/*
  		** Try to match to an aliased printer