libtf: minor changes and new test case for network i/o

fixup the internals a bit.

1 files changed, 4 insertions, 2 deletions

diff --git a/include/libtf/io.h b/include/libtf/io.h
index 8f5b54d..38dd541 100644
--- a/include/libtf/io.h
+++ b/include/libtf/io.h
@@ -52,8 +52,10 @@ void tf_poll_close(void);
 int tf_open_fd(struct tf_fd *fd, int kfd, int flags);
 int tf_open(struct tf_fd *fd, const char *pathname, int flags);
 int tf_close(struct tf_fd *fd);
-int tf_read(struct tf_fd *fd, void *buf, size_t count, tf_mtime_diff_t timeout);
-int tf_write(struct tf_fd *fd, const void *buf, size_t count, tf_mtime_diff_t timeout);
+ssize_t tf_read(struct tf_fd *fd, void *buf, size_t count, tf_mtime_diff_t timeout);
+ssize_t tf_write(struct tf_fd *fd, const void *buf, size_t count, tf_mtime_diff_t timeout);
+int tf_read_fully(struct tf_fd *fd, void *buf, size_t count, tf_mtime_diff_t timeout);
+int tf_write_fully(struct tf_fd *fd, const void *buf, size_t count, tf_mtime_diff_t timeout);
 
 int tf_socket(struct tf_fd *fd, int domain, int type, int protocol);
 int tf_bind(struct tf_fd *fd, const struct tf_sockaddr *addr);