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#include <kernel/handle.h>
#include <kernel/mem/alloc.h>
#include <kernel/panic.h>
#include <kernel/pipe.h>
#include <kernel/proc.h>
#include <kernel/vfs/request.h>
#include <shared/mem.h>
struct handle *handle_init(enum handle_type type) {
struct handle *h = kzalloc(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) return;
if (h->type == HANDLE_FILE) {
vfsreq_create((struct vfs_request) {
.type = VFSOP_CLOSE,
.id = h->file_id,
.caller = NULL,
.backend = h->backend,
});
} else if (h->type == HANDLE_PIPE) {
assert(!h->pipe.queued);
if (h->pipe.sister) {
pipe_invalidate_end(h->pipe.sister);
h->pipe.sister->pipe.sister = NULL;
}
}
if (h->backend)
vfs_backend_refdown(h->backend);
// TODO sanity check to check if refcount is true. handle_sanity?
h->type = HANDLE_INVALID;
kfree(h);
}
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