kernel: Add basic file descriptor support

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

1 files changed, 11 insertions, 0 deletions

diff --git a/sys/kern/kern_sched.c b/sys/kern/kern_sched.c
index bd59e41..77aab54 100644
--- a/sys/kern/kern_sched.c
+++ b/sys/kern/kern_sched.c
@@ -37,6 +37,7 @@
 #include <sys/loader.h>
 #include <sys/panic.h>
 #include <sys/machdep.h>
+#include <sys/filedesc.h>
 #include <fs/initramfs.h>
 #include <vm/dynalloc.h>
 #include <vm/physseg.h>
@@ -268,6 +269,11 @@ sched_create_td(uintptr_t rip, char *argvp[], char *envp[], struct auxval auxv,
     td->is_user = is_user;
     processor_init_pcb(td);
 
+    /* Allocate standard file descriptors */
+    __assert(fd_alloc(td) != NULL);       /* STDIN */
+    __assert(fd_alloc(td) != NULL);       /* STDOUT */
+    __assert(fd_alloc(td) != NULL);       /* STDERR */
+
     /* Setup trapframe */
     if (!is_user) {
         init_frame(tf, rip, (uintptr_t)stack);
@@ -294,6 +300,11 @@ sched_destroy_td(struct proc *td)
         dynfree((void *)td->stack_base);
     }
 
+    /* Close all of the file descriptors */
+    for (size_t i = 0; i < PROC_MAX_FDS; ++i) {
+        fd_close_fdnum(td, i);
+    }
+
     pmap_free_vas(vm_get_ctx(), td->addrsp);
     dynfree(td);
 }