*** src/pgp.c	Sat Jul 26 01:25:57 1997
--- src/pgp.c.new	Sat Jul 26 01:25:50 1997
***************
*** 111,116 ****
--- 111,120 ----
  #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
+ #ifdef linux
+ #include <unistd.h>	/* for David Miller's memory lock patch */
+ #include <sys/mman.h>	/* for David Miller's memory lock patch */
+ #endif
  
  #ifdef __QNX__
  #include <sys/stat.h>
***************
*** 435,440 ****
--- 439,457 ----
  #ifdef	DEBUG1
      verbose = TRUE;
  #endif
+ 
+ /* David Miller's memory lock patch */
+ #ifdef linux					/* Linux only, for now */
+     if (geteuid() == 0) {			/* if we have root privs */
+         /* lock all current & future pages in physical memory */
+ 	if (mlockall(MCL_CURRENT|MCL_FUTURE) < 0)
+ 		fprintf(pgpout, LANG("\007Could not lock all pages in memory.\n"));
+ 	if (setuid(getuid()) < 0)		/* drop root privs */
+ 		fprintf(pgpout, LANG("\007Could not drop root priviliges.\n"));
+     }
+ #endif
+ /* end David Miller's memory lock patch */
+ 
      /* The various places one can get passwords from.
       * We accumulate them all into two lists.  One is
       * to try on keys only, and is stored in no particular