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authordzwdz2022-05-01 20:09:52 +0200
committerdzwdz2022-05-01 20:09:52 +0200
commitd996f88bfda890df5d2b76e7c06cae329e04ab00 (patch)
treeeebe7b88bc48960a78648001adf38b5c66ffcfe3 /src/kernel/handle.c
parent7c62817193517f298bc566f3803c00d53a9a2b94 (diff)
kernel/proc: make handles separate refcounted objects
Diffstat (limited to 'src/kernel/handle.c')
-rw-r--r--src/kernel/handle.c27
1 files changed, 27 insertions, 0 deletions
diff --git a/src/kernel/handle.c b/src/kernel/handle.c
new file mode 100644
index 0000000..d7f19b3
--- /dev/null
+++ b/src/kernel/handle.c
@@ -0,0 +1,27 @@
+#include <kernel/handle.h>
+#include <kernel/mem/alloc.h>
+#include <kernel/panic.h>
+#include <kernel/proc.h>
+
+struct handle *handle_init(enum handle_type type) {
+ struct handle *h = kmalloc(sizeof *h);
+ h->type = type;
+ h->refcount = 1;
+ return h;
+}
+
+void handle_close(struct handle *h) {
+ if (!h) return;
+ assert(h->refcount > 0);
+ if (--(h->refcount) == 0) {
+ // TODO call close() in handler
+ // TODO count allocations and frees
+
+ // TODO sanity check to check if refcount is true. handle_sanity?
+
+ // TODO tests which would catch premature frees
+ // by that i mean duplicating a handle and killing the original process
+ h->type = HANDLE_INVALID;
+ kfree(h);
+ }
+}