/title/00000001/00000002/data/play_rec.dat
From WiiBrew
This file is generated by the System Menu before it launches a title.
typedef union { struct { u32 checksum; u16 name[0x28]; u32 _pad1; u64 ticks_boot; u64 ticks_last; u32 title_id; u32 _pad2[5]; }; struct { u32 _checksum; u32 data[0x1f]; }; } __attribute__((packed)) playtime_t;
SDK-based titles update this periodically with the current timestamp and on clean shutdown. The next time the System Menu starts, it checks for this file, and if it finds a valid play_rec.dat file it adds this entry to the "playtime log" in /title/00000001/00000002/data/cdb.vff and deletes this file.
In order to prevent strange effects that arise from not updating the timestamps correctly, the Homebrew Channel writes a corrupted entry to this file. This causes the System Menu to discard it upon the next boot.
static char _playtime_path[] __attribute__((aligned(32))) = "/title/00000001/00000002/data/play_rec.dat"; void playtime_destroy(void) { s32 res; s32 pt_fd = -1; static u8 pt_buf[4] __attribute__((aligned(32))); gprintf("destroying playtime\n"); res = ISFS_Initialize(); if (res) { ISFS_Deinitialize(); gprintf("error initializing isfs (%d)\n", res); return; } pt_fd = IOS_Open(_playtime_path, IPC_OPEN_RW); if(pt_fd < 0) { ISFS_Deinitialize(); gprintf("playtime open failed: %d\n", pt_fd); return; } memset(pt_buf, 0, sizeof(pt_buf)); res = IOS_Write(pt_fd, &pt_buf, sizeof(pt_buf)); if (res != sizeof(pt_buf)) { IOS_Close(pt_fd); ISFS_Deinitialize(); gprintf("error destroying playtime (%d)\n", res); return; } IOS_Close(pt_fd); ISFS_Deinitialize(); return; }
