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/*
* btrfs - volume management
*
* Copyright (C) 2012 Kay Sievers <kay@vrfy.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*/
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/ioctl.h>
#include "udev.h"
#define BTRFS_PATH_NAME_MAX 4087
struct btrfs_ioctl_vol_args {
int64_t fd;
char name[BTRFS_PATH_NAME_MAX + 1];
};
#define BTRFS_IOCTL_MAGIC 0x94
#define BTRFS_IOC_DEVICES_READY _IOR(BTRFS_IOCTL_MAGIC, 39, struct btrfs_ioctl_vol_args)
static int builtin_btrfs(struct udev_device *dev, int argc, char *argv[], bool test)
{
struct btrfs_ioctl_vol_args args;
int fd;
int err;
if (argc != 3 || !streq(argv[1], "ready"))
return EXIT_FAILURE;
fd = open("/dev/btrfs-control", O_RDWR);
if (fd < 0)
return EXIT_FAILURE;
util_strscpy(args.name, sizeof(args.name), argv[2]);
err = ioctl(fd, BTRFS_IOC_DEVICES_READY, &args);
close(fd);
if (err < 0)
return EXIT_FAILURE;
udev_builtin_add_property(dev, test, "ID_BTRFS_READY", err == 0 ? "1" : "0");
return EXIT_SUCCESS;
}
const struct udev_builtin udev_builtin_btrfs = {
.name = "btrfs",
.cmd = builtin_btrfs,
.help = "btrfs volume management",
};
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