Function rdbRemoveTempFile

src/rdb.cpp:1727–1741

Note that we may call this function in signal handle 'sigShutdownHandler', * so we need guarantee all functions we call are async-signal-safe. * If we call this function from signal handle, we won't call bg_unlik that * is not async-signal-safe. */

 * If  we call this function from signal handle, we won't call bg_unlik that
 * is not async-signal-safe. */
void rdbRemoveTempFile(int tmpfileNum, int from_signal) {
    char tmpfile[256];
    
    getTempFileName(tmpfile, tmpfileNum);

    if (from_signal) {
        /* bg_unlink is not async-signal-safe, but in this case we don't really
         * need to close the fd, it'll be released when the process exists. */
        int fd = open(tmpfile, O_RDONLY|O_NONBLOCK);
        UNUSED(fd);
        unlink(tmpfile);
    } else {
        bg_unlink(tmpfile);
    }
}

/* This function is called by rdbLoadObject() when the code is in RDB-check
 * mode and we find a module value of type 2 that can be parsed without