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OpenZFS 8264 - want support for promoting datasets in libzfs_core

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Authored by: Andrew Stormont <astormont@racktopsystems.com>
Reviewed by: Andriy Gapon <avg@FreeBSD.org>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Dan McDonald <danmcd@kebe.com>
Approved by: Dan McDonald <danmcd@kebe.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Ported-by: Giuseppe Di Natale <dinatale2@llnl.gov>

OpenZFS-issue: https://www.illumos.org/issues/8264
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/a4b8c9a
Closes #6254
This commit is contained in:
Giuseppe Di Natale
2017-06-26 16:56:09 -07:00
committed by Brian Behlendorf
parent 7517376f93
commit d12f91fde3
4 changed files with 69 additions and 17 deletions
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lib/libzfs_core/libzfs_core.c
+24 -1
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@@ -23,6 +23,7 @@
* Copyright (c) 2012, 2014 by Delphix. All rights reserved.
* Copyright (c) 2013 Steven Hartland. All rights reserved.
* Copyright (c) 2017 Datto Inc.
* Copyright 2017 RackTop Systems.
*/
/*
@@ -206,6 +207,28 @@ lzc_clone(const char *fsname, const char *origin,
return (error);
}
int
lzc_promote(const char *fsname, char *snapnamebuf, int snapnamelen)
{
/*
* The promote ioctl is still legacy, so we need to construct our
* own zfs_cmd_t rather than using lzc_ioctl().
*/
zfs_cmd_t zc = { "\0" };
ASSERT3S(g_refcount, >, 0);
VERIFY3S(g_fd, !=, -1);
(void) strlcpy(zc.zc_name, fsname, sizeof (zc.zc_name));
if (ioctl(g_fd, ZFS_IOC_PROMOTE, &zc) != 0) {
int error = errno;
if (error == EEXIST && snapnamebuf != NULL)
(void) strlcpy(snapnamebuf, zc.zc_string, snapnamelen);
return (error);
}
return (0);
}
/*
* Creates snapshots.
*
@@ -333,7 +356,7 @@ lzc_exists(const char *dataset)
{
/*
* The objset_stats ioctl is still legacy, so we need to construct our
* own zfs_cmd_t rather than using zfsc_ioctl().
* own zfs_cmd_t rather than using lzc_ioctl().
*/
zfs_cmd_t zc = {"\0"};