use ssize_t and size_t for read- and write-like emacs_gnutls_* functions

* gnutls.c (emacs_gnutls_read): Adjust signature to be more read-like:
return ssize_t not "int", and use size_t as the buffer length.
(emacs_gnutls_write): Likewise, and make the buffer pointer "const".
* gnutls.h: Update declarations.
* process.c (read_process_output): Use ssize_t, to match.
(send_process): Likewise.

1 files changed, 6 insertions, 6 deletions

diff --git a/src/gnutls.h b/src/gnutls.h
index 43a9eefce1..b39131b623 100644
--- a/src/gnutls.h
+++ b/src/gnutls.h
@@ -50,15 +50,15 @@ typedef enum
 
 #define GNUTLS_LOG2(level, max, string, extra) if (level <= max) { gnutls_log_function2 (level, "(Emacs) " string, extra); }
 
-int
-emacs_gnutls_write (int fildes, struct Lisp_Process *proc, char *buf,
-                    unsigned int nbyte);
-int
+ssize_t
+emacs_gnutls_write (int fildes, struct Lisp_Process *proc, const char *buf,
+                    size_t nbyte);
+ssize_t
 emacs_gnutls_read (int fildes, struct Lisp_Process *proc, char *buf,
-                   unsigned int nbyte);
+                   size_t nbyte);
 
 extern void syms_of_gnutls (void);
 
-#endif 
+#endif
 
 #endif