Reserve for OPENSSL_NO_POSIX_IO macro which is to eliminate references

to open/read/write/close. First OPENSSL_NO_POSIX_IO target would be
Windows CE.

crypto/bio/bss_fd.c

@@ -56,12 +56,17 @@
  * [including the GNU Public Licence.]
  */
 
-#if !defined(_WIN32_WCE)
-
 #include <stdio.h>
 #include <errno.h>
 #define USE_SOCKETS
 #include "cryptlib.h"
+
+#if defined(OPENSSL_NO_POSIX_IO)
+/*
+ * One can argue that one should implement dummy placeholder for
+ * BIO_s_fd here...
+ */
+#else
 /*
  * As for unconditional usage of "UPLINK" interface in this module.
  * Trouble is that unlike Unix file descriptors [which are indexes

crypto/des/enc_read.c

@@ -87,6 +87,9 @@ OPENSSL_IMPLEMENT_GLOBAL(int,DES_rw_mode)=DES_PCBC_MODE;
 int DES_enc_read(int fd, void *buf, int len, DES_key_schedule *sched,
 		 DES_cblock *iv)
 	{
+#if defined(OPENSSL_NO_POSIX_IO)
+	return(0);
+#else
 	/* data to be unencrypted */
 	int net_num=0;
 	static unsigned char *net=NULL;
@@ -224,5 +227,6 @@ int DES_enc_read(int fd, void *buf, int len, DES_key_schedule *sched,
 			}
 		}
 	return num;
+#endif /* OPENSSL_NO_POSIX_IO */
 	}
 

crypto/des/enc_writ.c

@@ -80,6 +80,9 @@
 int DES_enc_write(int fd, const void *_buf, int len,
 		  DES_key_schedule *sched, DES_cblock *iv)
 	{
+#if defined(OPENSSL_NO_POSIX_IO)
+	return (-1);
+#else
 #ifdef _LIBC
 	extern unsigned long time();
 	extern int write();
@@ -168,4 +171,5 @@ int DES_enc_write(int fd, const void *_buf, int len,
 		}
 
 	return(len);
+#endif /* OPENSSL_NO_POSIX_IO */
 	}