start outlining fd-based redirecting

1 files changed, 17 insertions, 0 deletions

diff --git a/exec.h b/exec.h
index 2424801..ca0b1a5 100644
--- a/exec.h
+++ b/exec.h
@@ -5,6 +5,23 @@
 
 
 typedef struct {
+    int old_fd;
+    int new_fd;
+} FdRedirect;
+
+DECLARE_VEC(FdRedirect, FdRedirectVec)
+
+typedef struct {
+    char** args;
+    FdRedirectVec redirs;
+    int stdin_fd;
+    int stdout_fd;
+    IntVec child_close_fds;
+    IntVec parent_close_fds;
+} ExecutableCommand;
+
+
+typedef struct {
     KeyValMap aliases;
     KeyValMap shell_vars;
 } ShellState;