Esempio n. 1
0
static char *
get_devid(const char *path)
{
	int fd;
	ddi_devid_t devid;
	char *minor, *ret;

	if ((fd = open(path, O_RDONLY)) < 0)
		return (NULL);

	minor = NULL;
	ret = NULL;
	if (devid_get(fd, &devid) == 0) {
		if (devid_get_minor_name(fd, &minor) == 0)
			ret = devid_str_encode(devid, minor);
		if (minor != NULL)
			devid_str_free(minor);
		devid_free(devid);
	}
	(void) close(fd);

	return (ret);
}
Esempio n. 2
0
static int
get_attrs(descriptor_t *dp, int fd,  nvlist_t *attrs)
{
	struct dk_minfo	minfo;
	int		status;
	int		data_format = FMT_UNKNOWN;
	int		snum = -1;
	int		error;
	struct extvtoc	vtoc;
	struct dk_gpt	*efip;
	struct dk_cinfo	dkinfo;
	int		cooked_fd;
	struct stat	buf;

	if (fd < 0) {
	    return (ENODEV);
	}

	/* First make sure media is inserted and spun up. */
	if (!media_read_info(fd, &minfo)) {
	    return (ENODEV);
	}

	if ((status = read_extvtoc(fd, &vtoc)) >= 0) {
	    data_format = FMT_VTOC;
	} else if (status == VT_ENOTSUP && efi_alloc_and_read(fd, &efip) >= 0) {
	    data_format = FMT_EFI;
	    if (nvlist_add_boolean(attrs, DM_EFI) != 0) {
		efi_free(efip);
		return (ENOMEM);
	    }
	}

	if (data_format == FMT_UNKNOWN) {
	    return (ENODEV);
	}

	if (ioctl(fd, DKIOCINFO, &dkinfo) >= 0) {
	    snum = dkinfo.dki_partition;
	}

	/* check the slice */
	if (data_format == FMT_VTOC) {
	    if (snum < 0 || snum >= vtoc.v_nparts ||
		vtoc.v_part[snum].p_size == 0) {
		return (ENODEV);
	    }
	} else { /* data_format == FMT_EFI */
	    if (snum < 0 || snum >= efip->efi_nparts ||
		efip->efi_parts[snum].p_size == 0) {
		efi_free(efip);
		return (ENODEV);
	    }
	}

	/* the slice exists */

	if (nvlist_add_uint32(attrs, DM_INDEX, snum) != 0) {
	    if (data_format == FMT_EFI) {
		efi_free(efip);
	    }
	    return (ENOMEM);
	}

	if (data_format == FMT_VTOC) {
	    if (nvlist_add_uint64(attrs, DM_START, vtoc.v_part[snum].p_start)
		!= 0) {
		return (ENOMEM);
	    }

	    if (nvlist_add_uint64(attrs, DM_SIZE, vtoc.v_part[snum].p_size)
		!= 0) {
		return (ENOMEM);
	    }

	    if (nvlist_add_uint32(attrs, DM_TAG, vtoc.v_part[snum].p_tag)
		!= 0) {
		return (ENOMEM);
	    }

	    if (nvlist_add_uint32(attrs, DM_FLAG, vtoc.v_part[snum].p_flag)
		!= 0) {
		return (ENOMEM);
	    }

	} else { /* data_format == FMT_EFI */
	    if (nvlist_add_uint64(attrs, DM_START,
		efip->efi_parts[snum].p_start) != 0) {
		efi_free(efip);
		return (ENOMEM);
	    }

	    if (nvlist_add_uint64(attrs, DM_SIZE, efip->efi_parts[snum].p_size)
		!= 0) {
		efi_free(efip);
		return (ENOMEM);
	    }

	    if (efip->efi_parts[snum].p_name[0] != 0) {
		char	label[EFI_PART_NAME_LEN + 1];

		(void) snprintf(label, sizeof (label), "%.*s",
		    EFI_PART_NAME_LEN, efip->efi_parts[snum].p_name);
		if (nvlist_add_string(attrs, DM_EFI_NAME, label) != 0) {
		    efi_free(efip);
		    return (ENOMEM);
		}
	    }
	}

	if (data_format == FMT_EFI) {
	    efi_free(efip);
	}

	if (inuse_mnt(dp->name, attrs, &error)) {
	    if (error != 0)
		return (error);
	}

	if (fstat(fd, &buf) != -1) {
	    if (nvlist_add_uint64(attrs, DM_DEVT, buf.st_rdev) != 0) {
		return (ENOMEM);
	    }
	}

	/*
	 * We need to open the cooked slice (not the raw one) to get the
	 * correct devid.
	 */
	cooked_fd = open(dp->name, O_RDONLY|O_NDELAY);

	if (cooked_fd >= 0) {
	    int		no_mem = 0;
	    ddi_devid_t	devid;

	    if (devid_get(cooked_fd, &devid) == 0) {
		char	*minor;

		if (devid_get_minor_name(cooked_fd, &minor) == 0) {
		    char	*devidstr;

		    if ((devidstr = devid_str_encode(devid, minor)) != 0) {

			if (nvlist_add_string(attrs, DM_DEVICEID, devidstr)
			    != 0) {
			    no_mem = 1;
			}

			devid_str_free(devidstr);
		    }
		    devid_str_free(minor);
		}
		devid_free(devid);
	    }
	    (void) close(cooked_fd);

	    if (no_mem) {
		return (ENOMEM);
	    }
	}

	return (0);
}
/*
 * Create a leaf vdev.  Determine if this is a file or a device.  If it's a
 * device, fill in the device id to make a complete nvlist.  Valid forms for a
 * leaf vdev are:
 *
 * 	/dev/dsk/xxx	Complete disk path
 * 	/xxx		Full path to file
 * 	xxx		Shorthand for /dev/dsk/xxx
 */
nvlist_t *
make_leaf_vdev(const char *arg)
{
	char path[MAXPATHLEN];
	struct stat statbuf;
	nvlist_t *vdev = NULL;
	char *type = NULL;
	boolean_t wholedisk = B_FALSE;

	/*
	 * Determine what type of vdev this is, and put the full path into
	 * 'path'.  We detect whether this is a device of file afterwards by
	 * checking the st_mode of the file.
	 */
	if (arg[0] == '/') {
		/*
		 * Complete device or file path.  Exact type is determined by
		 * examining the file descriptor afterwards.
		 */
		if (is_whole_disk(arg, &statbuf)) {
			wholedisk = B_TRUE;
		} else if (stat(arg, &statbuf) != 0) {
			(void) fprintf(stderr,
			    gettext("cannot open '%s': %s\n"),
			    arg, strerror(errno));
			return (NULL);
		}

		(void) strlcpy(path, arg, sizeof (path));
	} else {
		/*
		 * This may be a short path for a device, or it could be total
		 * gibberish.  Check to see if it's a known device in
		 * /dev/dsk/.  As part of this check, see if we've been given a
		 * an entire disk (minus the slice number).
		 */
		(void) snprintf(path, sizeof (path), "%s/%s", DISK_ROOT,
		    arg);
		if (is_whole_disk(path, &statbuf)) {
			wholedisk = B_TRUE;
		} else if (stat(path, &statbuf) != 0) {
			/*
			 * If we got ENOENT, then the user gave us
			 * gibberish, so try to direct them with a
			 * reasonable error message.  Otherwise,
			 * regurgitate strerror() since it's the best we
			 * can do.
			 */
			if (errno == ENOENT) {
				(void) fprintf(stderr,
				    gettext("cannot open '%s': no such "
				    "device in %s\n"), arg, DISK_ROOT);
				(void) fprintf(stderr,
				    gettext("must be a full path or "
				    "shorthand device name\n"));
				return (NULL);
			} else {
				(void) fprintf(stderr,
				    gettext("cannot open '%s': %s\n"),
				    path, strerror(errno));
				return (NULL);
			}
		}
	}

	/*
	 * Determine whether this is a device or a file.
	 */
	if (S_ISBLK(statbuf.st_mode)) {
		type = VDEV_TYPE_DISK;
	} else if (S_ISREG(statbuf.st_mode)) {
		type = VDEV_TYPE_FILE;
	} else {
		(void) fprintf(stderr, gettext("cannot use '%s': must be a "
		    "block device or regular file\n"), path);
		return (NULL);
	}

	/*
	 * Finally, we have the complete device or file, and we know that it is
	 * acceptable to use.  Construct the nvlist to describe this vdev.  All
	 * vdevs have a 'path' element, and devices also have a 'devid' element.
	 */
	verify(nvlist_alloc(&vdev, NV_UNIQUE_NAME, 0) == 0);
	verify(nvlist_add_string(vdev, ZPOOL_CONFIG_PATH, path) == 0);
	verify(nvlist_add_string(vdev, ZPOOL_CONFIG_TYPE, type) == 0);
	if (strcmp(type, VDEV_TYPE_DISK) == 0)
		verify(nvlist_add_uint64(vdev, ZPOOL_CONFIG_WHOLE_DISK,
		    (uint64_t)wholedisk) == 0);

	/*
	 * For a whole disk, defer getting its devid until after labeling it.
	 */
	if (S_ISBLK(statbuf.st_mode) && !wholedisk) {
		/*
		 * Get the devid for the device.
		 */
		int fd;
		ddi_devid_t devid;
		char *minor = NULL, *devid_str = NULL;

		if ((fd = open(path, O_RDONLY)) < 0) {
			(void) fprintf(stderr, gettext("cannot open '%s': "
			    "%s\n"), path, strerror(errno));
			nvlist_free(vdev);
			return (NULL);
		}

		if (devid_get(fd, &devid) == 0) {
			if (devid_get_minor_name(fd, &minor) == 0 &&
			    (devid_str = devid_str_encode(devid, minor)) !=
			    NULL) {
				verify(nvlist_add_string(vdev,
				    ZPOOL_CONFIG_DEVID, devid_str) == 0);
			}
			if (devid_str != NULL)
				devid_str_free(devid_str);
			if (minor != NULL)
				devid_str_free(minor);
			devid_free(devid);
		}

		(void) close(fd);
	}

	return (vdev);
}