mirror of
https://git.proxmox.com/git/mirror_zfs.git
synced 2024-12-27 03:19:35 +03:00
5f91bd3dea
Change the zvol helper program to replace any embedded spaces in the pool or dataset names with '+' to ensure we have valid symlinks. The '+' character was choosen because it is not a valid character for a dataset name but it is allowed by udev. This ensures that all dataset names with an embedded space will be translated to a unique /dev/zvol/ symlink. Signed-off-by: Dan Swartzendruber <dswartz@druber.com> Signed-off-by: Darik Horn <dajhorn@vanadac.com> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #2834
104 lines
2.5 KiB
C
104 lines
2.5 KiB
C
/*
|
|
* CDDL HEADER START
|
|
*
|
|
* The contents of this file are subject to the terms of the
|
|
* Common Development and Distribution License (the "License").
|
|
* You may not use this file except in compliance with the License.
|
|
*
|
|
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
|
|
* or http://www.opensolaris.org/os/licensing.
|
|
* See the License for the specific language governing permissions
|
|
* and limitations under the License.
|
|
*
|
|
* When distributing Covered Code, include this CDDL HEADER in each
|
|
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
|
|
* If applicable, add the following below this CDDL HEADER, with the
|
|
* fields enclosed by brackets "[]" replaced with your own identifying
|
|
* information: Portions Copyright [yyyy] [name of copyright owner]
|
|
*
|
|
* CDDL HEADER END
|
|
*/
|
|
/*
|
|
* Copyright (c) 2011, Fajar A. Nugraha. All rights reserved.
|
|
* Use is subject to license terms.
|
|
*/
|
|
|
|
#include <ctype.h>
|
|
#include <string.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <fcntl.h>
|
|
#include <unistd.h>
|
|
#include <linux/ioctl.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/zfs_znode.h>
|
|
#include <sys/fs/zfs.h>
|
|
|
|
static int
|
|
ioctl_get_msg(char *var, int fd)
|
|
{
|
|
int error = 0;
|
|
char msg[ZFS_MAXNAMELEN];
|
|
|
|
error = ioctl(fd, BLKZNAME, msg);
|
|
if (error < 0) {
|
|
return (error);
|
|
}
|
|
|
|
snprintf(var, ZFS_MAXNAMELEN, "%s", msg);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
int fd, error = 0;
|
|
char zvol_name[ZFS_MAXNAMELEN], zvol_name_part[ZFS_MAXNAMELEN];
|
|
char *dev_name;
|
|
struct stat64 statbuf;
|
|
int dev_minor, dev_part;
|
|
int i;
|
|
|
|
if (argc < 2) {
|
|
printf("Usage: %s /dev/zvol_device_node\n", argv[0]);
|
|
return (EINVAL);
|
|
}
|
|
|
|
dev_name = argv[1];
|
|
error = stat64(dev_name, &statbuf);
|
|
if (error != 0) {
|
|
printf("Unable to access device file: %s\n", dev_name);
|
|
return (errno);
|
|
}
|
|
|
|
dev_minor = minor(statbuf.st_rdev);
|
|
dev_part = dev_minor % ZVOL_MINORS;
|
|
|
|
fd = open(dev_name, O_RDONLY);
|
|
if (fd < 0) {
|
|
printf("Unable to open device file: %s\n", dev_name);
|
|
return (errno);
|
|
}
|
|
|
|
error = ioctl_get_msg(zvol_name, fd);
|
|
if (error < 0) {
|
|
printf("ioctl_get_msg failed:%s\n", strerror(errno));
|
|
return (errno);
|
|
}
|
|
if (dev_part > 0)
|
|
snprintf(zvol_name_part, ZFS_MAXNAMELEN, "%s-part%d", zvol_name,
|
|
dev_part);
|
|
else
|
|
snprintf(zvol_name_part, ZFS_MAXNAMELEN, "%s", zvol_name);
|
|
|
|
for (i = 0; i < strlen(zvol_name_part); i++) {
|
|
if (isblank(zvol_name_part[i]))
|
|
zvol_name_part[i] = '+';
|
|
}
|
|
|
|
printf("%s\n", zvol_name_part);
|
|
close(fd);
|
|
return (error);
|
|
}
|