问获取avc: AOSP 6.0.1中的拒绝错误

EN

    FILE *sourceFile; 
    FILE *destFile;
    char sourcePath[100]= "/storage/emulated/0/test.txt";
    char destPath[100]="/cache/SH_DIR/";
    char ch;


    printf("Enter source file path: %s",sourcePath);

    printf("Enter destination file path:%s ",destPath);


    sourceFile  = fopen(sourcePath, "r");
    destFile    = fopen(destPath,   "w");
 
    if (sourceFile == NULL || destFile == NULL)
        {
    
    printf("\nUnable to open file.\n");
    printf("Please check if file exists and you have read/write privilege.\n");


    exit(EXIT_FAILURE);
        }
ch = fgetc(sourceFile);
while (ch != EOF)
{
    /* Write to destination file */
    fputc(ch, destFile);

    /* Read next character from source file */
    ch = fgetc(sourceFile);
}


printf("\nFiles copied successfully.\n");



/* Finally close files to release resources */
fclose(sourceFile);
fclose(destFile);

 /cache/SH_DIR(/.*)? u:object_r:ccc_downloaded_sw_file:s0

allow filename ccc_downloaded_sw_file:dir { open search read write getattr add_name remove_name };
allow filename ccc_downloaded_sw_file:file { open read create write unlink append getattr setattr };