Merge "Add a working Windows tmpfile(3) to fastboot."

    return data;

}

#if defined(_WIN32)

// TODO: move this to somewhere it can be shared.

#include <windows.h>

// Windows' tmpfile(3) requires administrator rights because

// it creates temporary files in the root directory.

static FILE* win32_tmpfile() {

    char temp_path[PATH_MAX];

    DWORD nchars = GetTempPath(sizeof(temp_path), temp_path);

    if (nchars == 0 || nchars >= sizeof(temp_path)) {

        fprintf(stderr, "GetTempPath failed, error %ld\n", GetLastError());

        return nullptr;

    }

    char filename[PATH_MAX];

    if (GetTempFileName(temp_path, "fastboot", 0, filename) == 0) {

        fprintf(stderr, "GetTempFileName failed, error %ld\n", GetLastError());

        return nullptr;

    }

    return fopen(filename, "w+bTD");

}

#define tmpfile win32_tmpfile

#endif

static int unzip_to_file(ZipArchiveHandle zip, char* entry_name) {

    FILE* fp = tmpfile();

    if (fp == NULL) {