create.c
No OneTemporary
Actions

Size

1 KB

Referenced Files

None

Subscribers

None

create.c
View Options

	#include <stdio.h>
	#include <stdlib.h>
	#include <unistd.h>
	#include <string.h>
	//#include <fcntl.h>
	#include <errno.h>
	#include <inttypes.h>
	#include <netinet/in.h>
	#include <linux/dm-csnap.h>
	#include "csnap.h"
	#include "trace.h"
	#include "sock.h"

	#ifdef DELETE
	# define THIS_CODE DELETE_SNAPSHOT
	# define THIS_REPLY REPLY_DELETE_SNAPSHOT
	#else
	# define THIS_CODE CREATE_SNAPSHOT
	# define THIS_REPLY REPLY_CREATE_SNAPSHOT
	#endif

	int main(int argc, char *argv[])
	{
	int sock, err;
	if (argc < 3)
	error("usage: %s host:port snapshot", argv[0]);

	int snap = atoi(argv[2]);
	char *host = argv[1];
	int len = strlen(host), port = parse_port(host, &len);

	if (port < 0)
	error("expected host:port, not %s", host);
	host[len] = 0;

	if (!(sock = open_socket(host, port)))
	error("Can't connect to %s:%i", host, port);

	outbead(sock, THIS_CODE, struct create_snapshot, snap);

	struct head head;
	unsigned maxbuf = 500;
	char buf[maxbuf];

	if ((err = readpipe(sock, &head, sizeof(head))))
	goto pipe_error;
	assert(head.length < maxbuf); // !!! don't die
	if ((err = readpipe(sock, buf, head.length)))
	goto pipe_error;
	trace_on(printf("reply = %x\n", head.code);)
	err = head.code != THIS_REPLY;

	if (head.code == REPLY_ERROR)
	error("%.*s", head.length - 4, buf + 4);
	pipe_error:
	close(sock);
	return err;
	}