add some scaffolding for file descriptors

1 files changed, 8 insertions, 0 deletions

diff --git a/src/kernel/syscalls.h b/src/kernel/syscalls.h
index f3e8dc0..d8ca5c3 100644
--- a/src/kernel/syscalls.h
+++ b/src/kernel/syscalls.h
@@ -14,6 +14,10 @@ enum {
 	_SYSCALL_FS_OPEN,
 	_SYSCALL_MOUNT,
 
+	_SYSCALL_FD_READ,
+	_SYSCALL_FD_WRITE,
+	_SYSCALL_FD_CLOSE,
+
 	_SYSCALL_DEBUGLOG
 };
 
@@ -36,6 +40,10 @@ int _syscall_fork();
 fd_t _syscall_fs_open(const char *path, int len);
 int _syscall_mount(const char *path, int len, fd_t fd);
 
+int _syscall_fd_read(fd_t fd, char *buf, int len);
+int _syscall_fd_write(fd_t fd, char *buf, int len);
+int _syscall_fd_close(fd_t fd);
+
 /** Prints a message to the debug console.
  * @return the amount of bytes written (can be less than len)
  */