Block process while waiting for keyboard input

kernel/include/kernel/fs/chardev.h

@@ -2,6 +2,11 @@
 #define CHAR_DEV_H
 
 #include <kernel/fs/vfs.h>
+#include <kernel/process.h>
+
+struct chardev_info {
+    process_queue rsrc_wait_queue;
+};
 
 void init_tty1 (inode* absolute_root);
 

kernel/include/kernel/fs/vfs.h

@@ -20,6 +20,9 @@ typedef enum { UNDEF, EFILE, DIRECTORY, LINK, CHAR_DEV } file_type_t;
 typedef struct inode inode;
 typedef struct file	 file;
 
+typedef struct chardev_info chardev_info_t;
+typedef struct ramfs_info	ramfs_info_t;
+
 typedef struct {
 	int (*lookup) (char*, inode**, inode*);
 	int (*create) (char*, inode**, inode*);
@@ -41,6 +44,10 @@ struct inode {
 	inode_operations* i_iops;
 	file_operations*  i_fops;
 	file_type_t		  i_type;
+	union {
+		chardev_info_t* chardev_info;
+		ramfs_info_t*	ramfs_info;
+	} i_info;
 };
 
 struct file {

kernel/src/kernel/fs/chardev.c

@@ -34,7 +34,11 @@ void init_tty1 (inode* absolute_root) {
 	tty1_fops->write = stdout_write;
 	// tty1_fops->read = // connect to keyboard get_next_char when available
 
+	chardev_info_t* tty1_info = kmalloc(sizeof(chardev_info_t));
+	kmemset (tty1_info, 0, sizeof(chardev_info_t));
+
 	tty1_file->i_iops = nullptr;
 	tty1_file->i_fops = tty1_fops;
 	tty1_file->i_type = CHAR_DEV;
+	tty1_file->i_info.chardev_info = tty1_info;
 }

kernel/src/kernel/process.c

@@ -181,6 +181,12 @@ int process_fork (process* source_process, process** dest_ptr) {
 	return new_process->p_id;
 }
 
+void process_block (process_queue* wait_queue) {
+	current_process->p_state = TASK_BLOCKED;
+	enqueue_process(wait_queue, current_process);
+	do_sched_yield();
+}
+
 static uint64_t sys_fork (uint64_t arg1, uint64_t arg2, uint64_t arg3) {
 	(void)arg1, (void)arg2, (void)arg3; // fork does not use any args
 	process* child = nullptr;