From e356371f09df87ebab2d7e3d816de1147768dfa9 Mon Sep 17 00:00:00 2001
From: Alex Auvolat <alex.auvolat@ens.fr>
Date: Mon, 2 Mar 2015 23:02:59 +0100
Subject: Change VFS interface : handles no longer visible to underlying FS.

---
 src/kernel/user/vfs.c | 37 +++++++++++++------------------------
 1 file changed, 13 insertions(+), 24 deletions(-)

(limited to 'src/kernel/user/vfs.c')

diff --git a/src/kernel/user/vfs.c b/src/kernel/user/vfs.c
index 710326a..a02dc9b 100644
--- a/src/kernel/user/vfs.c
+++ b/src/kernel/user/vfs.c
@@ -420,12 +420,13 @@ fs_handle_t* fs_open(fs_t *fs, const char* file, int mode) {
 	fs_handle_t *h = (fs_handle_t*)malloc(sizeof(fs_handle_t));
 	if (h == 0) goto error;
 
+	bool open_ok = n->ops->open(n->data, mode);
+	if (!open_ok) goto error;
+
 	h->refs = 1;
 	h->fs = fs;
 	h->node = n;
-
-	bool open_ok = n->ops->open(n->data, mode, h);
-	if (!open_ok) goto error;
+	h->mode = mode;
 
 	// our reference to node n is transferred to the file handle
 	mutex_unlock(&n->lock);
@@ -446,7 +447,7 @@ void ref_file(fs_handle_t *file) {
 void unref_file(fs_handle_t *file) {
 	file->refs--;
 	if (file->refs == 0) {
-		file->ops->close(file->data);
+		file->node->ops->close(file->node->data);
 		unref_fs_node(file->node);
 		unref_fs(file->fs);
 		free(file);
@@ -460,17 +461,17 @@ int file_get_mode(fs_handle_t *f) {
 size_t file_read(fs_handle_t *f, size_t offset, size_t len, char* buf) {
 	if (!(f->mode & FM_READ)) return 0;
 
-	if (f->ops->read == 0) return 0;
+	if (f->node->ops->read == 0) return 0;
 
-	return f->ops->read(f->data, offset, len, buf);
+	return f->node->ops->read(f->node->data, offset, len, buf);
 }
 
 size_t file_write(fs_handle_t *f, size_t offset, size_t len, const char* buf) {
 	if (!(f->mode & FM_WRITE)) return 0;
 
-	if (f->ops->write == 0) return 0;
+	if (f->node->ops->write == 0) return 0;
 
-	return f->ops->write(f->data, offset, len, buf);
+	return f->node->ops->write(f->node->data, offset, len, buf);
 }
 
 bool file_stat(fs_handle_t *f, stat_t *st) {
@@ -480,27 +481,15 @@ bool file_stat(fs_handle_t *f, stat_t *st) {
 int file_ioctl(fs_handle_t *f, int command, void* data) {
 	if (!(f->mode & FM_IOCTL)) return -1;
 
-	if (f->ops->ioctl == 0) return -1;
+	if (f->node->ops->ioctl == 0) return -1;
 
-	return f->ops->ioctl(f->data, command, data);
+	return f->node->ops->ioctl(f->node->data, command, data);
 }
 
-bool file_readdir(fs_handle_t *f, dirent_t *d) {
+bool file_readdir(fs_handle_t *f, size_t ent_no, dirent_t *d) {
 	if (!(f->mode & FM_READDIR)) return 0;
 
-	return f->ops->readdir && f->ops->readdir(f->data, d);
-}
-
-uint32_t file_get_page(fs_handle_t *f, size_t offset) {
-	if (!(f->mode & FM_MMAP)) return 0;
-	ASSERT(f->ops->get_page != 0);
-	return f->ops->get_page(f->data, offset);
-}
-
-void file_commit_page(fs_handle_t *f, size_t offset, uint64_t time) {
-	if (!(f->mode & FM_MMAP)) return;
-	ASSERT(f->ops->commit_page != 0);
-	f->ops->commit_page(f->data, offset, time);
+	return f->node->ops->readdir && f->node->ops->readdir(f->node->data, ent_no, d);
 }
 
 /* vim: set ts=4 sw=4 tw=0 noet :*/
-- 
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