kernel: split the kernel/user inputs in VfsReq

I think I've done this refactor in the opposite direction a few years ago.

This is mostly meant to prepare me for setxattr, which requires two inputs -
coincidentally, one is already going to be a kernel input, and the other will
be an user input, so it works out.

I also just didn't like the previous way it worked, this feels cleaner.

1 files changed, 3 insertions, 3 deletions

diff --git a/src/kernel/arch/amd64/driver/util.c b/src/kernel/arch/amd64/driver/util.c
index f02c4e2..c55e36e 100644
--- a/src/kernel/arch/amd64/driver/util.c
+++ b/src/kernel/arch/amd64/driver/util.c
@@ -7,10 +7,10 @@
 int req_readcopy(VfsReq *req, const void *buf, size_t len) {
 	if (!req->caller) return -1;
 	assert(req->type == VFSOP_READ);
-	fs_normslice(&req->offset, &req->output.len, len, false);
+	fs_normslice(&req->offset, &req->outlen, len, false);
 	/* read errors are ignored. TODO write a spec */
-	pcpy_to(req->caller, req->output.buf, buf + req->offset, req->output.len);
-	return req->output.len;
+	pcpy_to(req->caller, req->out, buf + req->offset, req->outlen);
+	return req->outlen;
 }
 
 size_t ring_to_virt(ring_t *r, Proc *proc, void __user *ubuf, size_t max) {