1/* Copyright (c) 2013-2015 Jeffrey Pfau
 2 *
 3 * This Source Code Form is subject to the terms of the Mozilla Public
 4 * License, v. 2.0. If a copy of the MPL was not distributed with this
 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 6#include "sce-vfs.h"
 7
 8#include "util/vfs.h"
 9#include "util/memory.h"
10
11
12struct VFileSce {
13	struct VFile d;
14
15	SceUID fd;
16};
17
18static bool _vfsceClose(struct VFile* vf);
19static off_t _vfsceSeek(struct VFile* vf, off_t offset, int whence);
20static ssize_t _vfsceRead(struct VFile* vf, void* buffer, size_t size);
21static ssize_t _vfsceWrite(struct VFile* vf, const void* buffer, size_t size);
22static void* _vfsceMap(struct VFile* vf, size_t size, int flags);
23static void _vfsceUnmap(struct VFile* vf, void* memory, size_t size);
24static void _vfsceTruncate(struct VFile* vf, size_t size);
25static ssize_t _vfsceSize(struct VFile* vf);
26
27struct VFile* VFileOpenSce(const char* path, int flags, SceMode mode) {
28	struct VFileSce* vfsce = malloc(sizeof(struct VFileSce));
29	if (!vfsce) {
30		return 0;
31	}
32
33	vfsce->fd = sceIoOpen(path, flags, mode);
34	if (vfsce->fd < 0) {
35		free(vfsce);
36		return 0;
37	}
38
39	vfsce->d.close = _vfsceClose;
40	vfsce->d.seek = _vfsceSeek;
41	vfsce->d.read = _vfsceRead;
42	vfsce->d.readline = 0;
43	vfsce->d.write = _vfsceWrite;
44	vfsce->d.map = _vfsceMap;
45	vfsce->d.unmap = _vfsceUnmap;
46	vfsce->d.truncate = _vfsceTruncate;
47	vfsce->d.size = _vfsceSize;
48
49	return &vfsce->d;
50}
51
52bool _vfsceClose(struct VFile* vf) {
53	struct VFileSce* vfsce = (struct VFileSce*) vf;
54
55	return sceIoClose(vfsce->fd) >= 0;
56}
57
58off_t _vfsceSeek(struct VFile* vf, off_t offset, int whence) {
59	struct VFileSce* vfsce = (struct VFileSce*) vf;
60	return sceIoLseek(vfsce->fd, offset, whence);
61}
62
63ssize_t _vfsceRead(struct VFile* vf, void* buffer, size_t size) {
64	struct VFileSce* vfsce = (struct VFileSce*) vf;
65	return sceIoRead(vfsce->fd, buffer, size);
66}
67
68ssize_t _vfsceWrite(struct VFile* vf, const void* buffer, size_t size) {
69	struct VFileSce* vfsce = (struct VFileSce*) vf;
70	return sceIoWrite(vfsce->fd, buffer, size);
71}
72
73static void* _vfsceMap(struct VFile* vf, size_t size, int flags) {
74	struct VFileSce* vfsce = (struct VFileSce*) vf;
75	UNUSED(flags);
76	void* buffer = anonymousMemoryMap(size);
77	if (buffer) {
78		sceIoRead(vfsce->fd, buffer, size);
79	}
80	return buffer;
81}
82
83static void _vfsceUnmap(struct VFile* vf, void* memory, size_t size) {
84	UNUSED(vf);
85	mappedMemoryFree(memory, size);
86}
87
88static void _vfsceTruncate(struct VFile* vf, size_t size) {
89	struct VFileSce* vfsce = (struct VFileSce*) vf;
90	// TODO
91}
92
93ssize_t _vfsceSize(struct VFile* vf) {
94	struct VFileSce* vfsce = (struct VFileSce*) vf;
95	SceOff cur = sceIoLseek(vfsce->fd, 0, SEEK_CUR);
96	SceOff end = sceIoLseek(vfsce->fd, 0, SEEK_END);
97	sceIoLseek(vfsce->fd, cur, SEEK_SET);
98	return end;
99}