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diff --git a/src/rmt.h b/src/rmt.h
index f130eb2..b83f17e 100644
--- a/src/rmt.h
+++ b/src/rmt.h
@@ -19,9 +19,9 @@ extern char *rmt_path__;
 
 int rmt_open__ PARAMS ((const char *, int, int, const char *));
 int rmt_close__ PARAMS ((int));
-int rmt_read__ PARAMS ((int, char *, unsigned int));
-int rmt_write__ PARAMS ((int, char *, unsigned int));
-long rmt_lseek__ PARAMS ((int, off_t, int));
+ssize_t rmt_read__ PARAMS ((int, char *, size_t));
+ssize_t rmt_write__ PARAMS ((int, char *, size_t));
+off_t rmt_lseek__ PARAMS ((int, off_t, int));
 int rmt_ioctl__ PARAMS ((int, int, char *));
 
 /* A filename is remote if it contains a colon not preceeded by a slash,
@@ -65,11 +65,11 @@ int rmt_ioctl__ PARAMS ((int, int, char *));
 
 #define rmtread(Fd, Buffer, Length) \
   (_isrmt (Fd) ? rmt_read__ (Fd - __REM_BIAS, Buffer, Length) \
-   : read (Fd, Buffer, Length))
+   : safe_read (Fd, Buffer, Length))
 
 #define rmtwrite(Fd, Buffer, Length) \
   (_isrmt (Fd) ? rmt_write__ (Fd - __REM_BIAS, Buffer, Length) \
-   : write (Fd, Buffer, Length))
+   : full_write (Fd, Buffer, Length))
 
 #define rmtlseek(Fd, Offset, Where) \
   (_isrmt (Fd) ? rmt_lseek__ (Fd - __REM_BIAS, Offset, Where) \