#include "config.h"
#include <stdio.h>
#include <string.h>

/**
 * closefrom - close all fds starting from specified fd.
 *
 * This code is an example of what to do in a child process to
 * ensure that none of the (possibly sensitive) file descriptors
 * in the parent remain in the child process.
 *
 * License: CC0 (Public domain)
 * Author: ZmnSCPxj jxPCSnmZ <ZmnSCPxj@protonmail.com>
 *
 * Example:
 * #include <ccan/closefrom/closefrom.h>
 * #include <ccan/err/err.h>
 * #include <stdio.h>
 * #include <sys/resource.h>
 * #include <sys/time.h>
 * #include <sys/types.h>
 * #include <sys/wait.h>
 * #include <unistd.h>
 *
 * int main(int argc, char **argv)
 * {
 *	pid_t child;
 *
 *	// If being emulated, then we might end up
 *	// looping over a large _SC_OPEN_MAX
 *	// (Some systems have it as INT_MAX!)
 *	// If so, closefrom_limit will lower this limit
 *	// to a value you specify, or if given 0 will
 *	// limit to 4096.
 *	// Call this as early as possible.
 *	closefrom_limit(0);
 *
 *	// If we limited, we can query this so we can
 *	// print it in debug logs or something.
 *	if (closefrom_may_be_slow())
 *		printf("we limited ourselves to 4096 fds.\n");
 *
 *	child = fork();
 *	if (child < 0)
 *		err(1, "Forking");
 *	if (child == 0) {
 *		closefrom(STDERR_FILENO + 1);
 *		// Insert your *whatever* code here.
 *		_exit(0);
 *	}
 *
 *	waitpid(child, NULL, 0);
 *
 *	return 0;
 * }
 *
 */
int main(int argc, char *argv[])
{
	/* Expect exactly one argument */
	if (argc != 2)
		return 1;

	if (strcmp(argv[1], "depends") == 0) {
		return 0;
	}

	return 1;
}