kern: cons: Add console string writing routine

Signed-off-by: Ian Moffett <ian@osmora.org>

1 files changed, 17 insertions, 0 deletions

diff --git a/src/sys/include/io/cons/cons.h b/src/sys/include/io/cons/cons.h
index 3f95cc0..7b0543e 100644
--- a/src/sys/include/io/cons/cons.h
+++ b/src/sys/include/io/cons/cons.h
@@ -32,9 +32,14 @@
 
 #include <sys/types.h>
 #include <sys/bootvars.h>
+#include <os/spinlock.h>
 
 struct cons_scr {
+    struct spinlock lock;
     struct bootvar_fb fbvars;
+    size_t text_x;
+    size_t text_y;
+    size_t max_col;
     uint32_t scr_bg;
     uint32_t scr_fg;
 };
@@ -51,4 +56,16 @@ extern struct cons_scr g_root_scr;
  */
 int cons_init(void);
 
+/*
+ * Write a string onto the screen
+ *
+ * @scr: Screen to write on
+ * @str: String to write onto the screen
+ * @len: Length of string to write
+ *
+ * Returns the number of bytes written on success,
+ * otherwise a less than zero value to indicate failure.
+ */
+ssize_t cons_putstr(struct cons_scr *scr, const char *str, size_t len);
+
 #endif  /* !_CONS_CONS_H_ */