Avoid (s)size_t for portability

telnet.h

@@ -31,7 +31,7 @@ extern tn_ctx_t *telnet_ctx_init(void *cctx, srv_tx_f * ftx, srv_rx_f * frx,
 
 extern int      telnet_open(tn_ctx_t * tcc);
 
-extern int      telnet_rx(tn_ctx_t * tcc, char *buf, size_t * plen);
+extern int      telnet_rx(tn_ctx_t * tcc, char *buf, int *plen);
 extern int      telnet_tx(tn_ctx_t * tcc, const char *buf, int len);
 
 extern void     telnet_set_opt(tn_ctx_t * tcc, int opt, int prm,

telnet_basic.c

@@ -121,18 +121,18 @@ static void _telnet_handle_opt(tn_ctx_t * tcc, int opt,
     }
 }
 
-int telnet_rx(tn_ctx_t * tcc, char *buf, size_t * plen)
+int telnet_rx(tn_ctx_t * tcc, char *buf, int *plen)
 {
     char           *s, *p;
     unsigned char  *pu;
-    size_t          len, rem;
+    int             len, rem;
     int             np, nd;
     int             b1, b2;
 
     len = *plen;
     tcc->bytes_rx += len;
 
-    if (len < (size_t) tcc->off_rx)
+    if (len < (int)tcc->off_rx)
         tcc->off_rx = 0;
 
     for (s = buf + tcc->off_rx, rem = len - tcc->off_rx; rem > 0; s = p)

ttynvt.c

@@ -62,7 +62,7 @@ typedef struct {
     struct pollfd   fds[3];
 
     char            net_buf[NET_BUF_SIZE];
-    size_t          net_cnt;
+    int             net_cnt;
     char            tmp_buf[TMP_BUF_SIZE];
 
     struct termios  tio;
@@ -191,7 +191,7 @@ static void _update_notify(ttynvt_t * tty, struct fuse_pollhandle *ph)
 static void    *_read_net(void *arg)
 {
     ttynvt_t       *tty = (ttynvt_t *) arg;
-    ssize_t         res;
+    int             res;
 
     pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL);
 
@@ -324,7 +324,7 @@ static int _srv_read(void *cctx, int timeout)
                        NET_BUF_SIZE - tty->net_cnt);
             if (res <= 0)
                 return res;
-            tty->net_cnt += (size_t) res;
+            tty->net_cnt += res;
             res = telnet_rx(tty->tn, tty->net_buf, &tty->net_cnt);
             if (res == 0)
                 break;
@@ -516,7 +516,7 @@ ttynvt_write(fuse_req_t req, const char *data, size_t size, off_t off,
              struct fuse_file_info *info)
 {
     ttynvt_t       *tty = (ttynvt_t *) (uintptr_t) info->fh;
-    ssize_t         res;
+    int             res;
 
 
     if (size == 0)