From bf4cbc830d78774ac00d9501c45e8b84d0ae9ae7 Mon Sep 17 00:00:00 2001
From: dzwdz
Date: Wed, 29 Jun 2022 21:52:15 +0200
Subject: kernel/vfs: add the OPEN_CREATE flag
---
src/kernel/arch/i386/driver/fsroot.c | 2 ++
src/kernel/arch/i386/driver/ps2.c | 5 +++--
src/kernel/arch/i386/driver/serial.c | 5 +++--
3 files changed, 8 insertions(+), 4 deletions(-)
(limited to 'src/kernel/arch')
diff --git a/src/kernel/arch/i386/driver/fsroot.c b/src/kernel/arch/i386/driver/fsroot.c
index e6e53cd..4207541 100644
--- a/src/kernel/arch/i386/driver/fsroot.c
+++ b/src/kernel/arch/i386/driver/fsroot.c
@@ -47,6 +47,8 @@ static int handle(struct vfs_request *req) {
assert(req->caller);
switch (req->type) {
case VFSOP_OPEN:
+ if (req->flags & OPEN_CREATE) return -1;
+
if (exacteq(req, "/")) return HANDLE_ROOT;
if (exacteq(req, "/vga")) return HANDLE_VGA;
diff --git a/src/kernel/arch/i386/driver/ps2.c b/src/kernel/arch/i386/driver/ps2.c
index b7e82eb..e1e97c0 100644
--- a/src/kernel/arch/i386/driver/ps2.c
+++ b/src/kernel/arch/i386/driver/ps2.c
@@ -31,10 +31,11 @@ static void accept(struct vfs_request *req) {
// when you fix something here go also fix it in the COM1 driver
static uint8_t buf[32]; // pretty damn stupid
int ret;
+ bool valid;
switch (req->type) {
case VFSOP_OPEN:
- ret = req->input.len == 0 ? 0 : -1;
- vfsreq_finish(req, 0);
+ valid = req->input.len == 0 && !(req->flags & OPEN_CREATE);
+ vfsreq_finish(req, valid ? 0 : -1);
break;
case VFSOP_READ:
if (ring_size((void*)&backlog) == 0) {
diff --git a/src/kernel/arch/i386/driver/serial.c b/src/kernel/arch/i386/driver/serial.c
index cda016c..b776d0c 100644
--- a/src/kernel/arch/i386/driver/serial.c
+++ b/src/kernel/arch/i386/driver/serial.c
@@ -69,10 +69,11 @@ void serial_write(const char *buf, size_t len) {
static void accept(struct vfs_request *req) {
static char buf[32];
int ret;
+ bool valid;
switch (req->type) {
case VFSOP_OPEN:
- ret = req->input.len == 0 ? 0 : -1;
- vfsreq_finish(req, 0);
+ valid = req->input.len == 0 && !(req->flags & OPEN_CREATE);
+ vfsreq_finish(req, valid ? 0 : -1);
break;
case VFSOP_READ:
if (ring_size((void*)&backlog) == 0) {
--
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