Function openDirectLogFiledes

app/redis-6.2.6/src/debug.c:1529–1535

Return a file descriptor to write directly to the Redis log with the * write(2) syscall, that can be used in critical sections of the code * where the rest of Redis can't be trusted (for example during the memory * test) or when an API call requires a raw fd. * * Close it with closeDirectLogFiledes(). */

 *
 * Close it with closeDirectLogFiledes(). */
int openDirectLogFiledes(void) {
    int log_to_stdout = server.logfile[0] == '\0';
    int fd = log_to_stdout ?
        STDOUT_FILENO :
        open(server.logfile, O_APPEND|O_CREAT|O_WRONLY, 0644);
    return fd;
}

/* Used to close what closeDirectLogFiledes() returns. */
void closeDirectLogFiledes(int fd) {