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Commit a26fbeea authored by Elliott Hughes's avatar Elliott Hughes
Browse files

Add a working Windows tmpfile(3) to fastboot. 

Windows' tmpfile(3) implementation requires administrator rights because
it creates temporary files in the root directory. Write an alternative
that uses the user's temporary directory instead.

Bug: http://b/21558406
Change-Id: Ic9aece5c69429797a332a97681a76b76ac3551bf
parent d3d32a1b

fastboot/fastboot.cpp

+29 −0
Original line number Diff line number Diff line
@@ -416,6 +416,35 @@ static void* unzip_file(ZipArchiveHandle zip, const char* entry_name, unsigned* 
    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) {