From 34fd6769e6fdf27a4394783a8d57135bee25af1e Mon Sep 17 00:00:00 2001
From: Jeffrey Pfau <jeffrey@endrift.com>
Date: Sun, 30 Aug 2015 18:42:16 -0700
Subject: [PATCH] PSP2: Fix seeking with mapping and unmapping files

---
 src/platform/psp2/sce-vfs.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/platform/psp2/sce-vfs.c b/src/platform/psp2/sce-vfs.c
index 88cb12119..a694763cf 100644
--- a/src/platform/psp2/sce-vfs.c
+++ b/src/platform/psp2/sce-vfs.c
@@ -98,14 +98,18 @@ static void* _vfsceMap(struct VFile* vf, size_t size, int flags) {
 	UNUSED(flags);
 	void* buffer = anonymousMemoryMap(size);
 	if (buffer) {
+		SceOff cur = sceIoLseek(vfsce->fd, 0, SEEK_CUR);
 		sceIoRead(vfsce->fd, buffer, size);
+		sceIoLseek(vfsce->fd, cur, SEEK_SET);
 	}
 	return buffer;
 }
 
 static void _vfsceUnmap(struct VFile* vf, void* memory, size_t size) {
 	struct VFileSce* vfsce = (struct VFileSce*) vf;
+	SceOff cur = sceIoLseek(vfsce->fd, 0, SEEK_CUR);
 	sceIoWrite(vfsce->fd, memory, size);
+	sceIoLseek(vfsce->fd, cur, SEEK_SET);
 	mappedMemoryFree(memory, size);
 }