Differential D23132 Diff 66985 head/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_mount.c

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head/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_mount.c

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	}			}

	boolean_t			boolean_t
	zfs_is_mounted(zfs_handle_t zhp, char *where)			zfs_is_mounted(zfs_handle_t zhp, char *where)
	{			{
	return (is_mounted(zhp->zfs_hdl, zfs_get_name(zhp), where));			return (is_mounted(zhp->zfs_hdl, zfs_get_name(zhp), where));
	}			}

				static boolean_t
				zfs_is_mountable_internal(zfs_handle_t zhp, const char mountpoint)
				{

				if (zfs_prop_get_int(zhp, ZFS_PROP_ZONED) &&
				getzoneid() == GLOBAL_ZONEID)
				return (B_FALSE);

				return (B_TRUE);
				}

	/*			/*
	* Returns true if the given dataset is mountable, false otherwise. Returns the			* Returns true if the given dataset is mountable, false otherwise. Returns the
	* mountpoint in 'buf'.			* mountpoint in 'buf'.
	*/			*/
	static boolean_t			static boolean_t
	zfs_is_mountable(zfs_handle_t zhp, char buf, size_t buflen,			zfs_is_mountable(zfs_handle_t zhp, char buf, size_t buflen,
	zprop_source_t *source)			zprop_source_t *source)
	{			{
	char sourceloc[MAXNAMELEN];			char sourceloc[MAXNAMELEN];
	zprop_source_t sourcetype;			zprop_source_t sourcetype;

	if (!zfs_prop_valid_for_type(ZFS_PROP_MOUNTPOINT, zhp->zfs_type))			if (!zfs_prop_valid_for_type(ZFS_PROP_MOUNTPOINT, zhp->zfs_type))
	return (B_FALSE);			return (B_FALSE);

	verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, buf, buflen,			verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, buf, buflen,
	&sourcetype, sourceloc, sizeof (sourceloc), B_FALSE) == 0);			&sourcetype, sourceloc, sizeof (sourceloc), B_FALSE) == 0);

	if (strcmp(buf, ZFS_MOUNTPOINT_NONE) == 0 \|\|			if (strcmp(buf, ZFS_MOUNTPOINT_NONE) == 0 \|\|
	strcmp(buf, ZFS_MOUNTPOINT_LEGACY) == 0)			strcmp(buf, ZFS_MOUNTPOINT_LEGACY) == 0)
	return (B_FALSE);			return (B_FALSE);

	if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) == ZFS_CANMOUNT_OFF)			if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) == ZFS_CANMOUNT_OFF)
	return (B_FALSE);			return (B_FALSE);

	if (zfs_prop_get_int(zhp, ZFS_PROP_ZONED) &&			if (!zfs_is_mountable_internal(zhp, buf))
	getzoneid() == GLOBAL_ZONEID)
	return (B_FALSE);			return (B_FALSE);

	if (source)			if (source)
	*source = sourcetype;			*source = sourcetype;

	return (B_TRUE);			return (B_TRUE);
	}			}

	/*			/*
	* Mount the given filesystem.			* Mount the given filesystem.
	*/			*/
	int			int
	zfs_mount(zfs_handle_t zhp, const char options, int flags)			zfs_mount(zfs_handle_t zhp, const char options, int flags)
	{			{
	struct stat buf;
	char mountpoint[ZFS_MAXPROPLEN];			char mountpoint[ZFS_MAXPROPLEN];

				if (!zfs_is_mountable(zhp, mountpoint, sizeof (mountpoint), NULL))
				return (0);

				return (zfs_mount_at(zhp, options, flags, mountpoint));
				}

				int
				zfs_mount_at(zfs_handle_t zhp, const char options, int flags,
				const char *mountpoint)
				{
				struct stat buf;
	char mntopts[MNT_LINE_MAX];			char mntopts[MNT_LINE_MAX];
	libzfs_handle_t *hdl = zhp->zfs_hdl;			libzfs_handle_t *hdl = zhp->zfs_hdl;

	if (options == NULL)			if (options == NULL)
	mntopts[0] = '\0';			mntopts[0] = '\0';
	else			else
	(void) strlcpy(mntopts, options, sizeof (mntopts));			(void) strlcpy(mntopts, options, sizeof (mntopts));

	/*			/*
	* If the pool is imported read-only then all mounts must be read-only			* If the pool is imported read-only then all mounts must be read-only
	*/			*/
	if (zpool_get_prop_int(zhp->zpool_hdl, ZPOOL_PROP_READONLY, NULL))			if (zpool_get_prop_int(zhp->zpool_hdl, ZPOOL_PROP_READONLY, NULL))
	flags \|= MS_RDONLY;			flags \|= MS_RDONLY;

	if (!zfs_is_mountable(zhp, mountpoint, sizeof (mountpoint), NULL))			if (!zfs_is_mountable_internal(zhp, mountpoint))
	return (0);			return (B_FALSE);

	/* Create the directory if it doesn't already exist */			/* Create the directory if it doesn't already exist */
	if (lstat(mountpoint, &buf) != 0) {			if (lstat(mountpoint, &buf) != 0) {
	if (mkdirp(mountpoint, 0755) != 0) {			if (mkdirp(mountpoint, 0755) != 0) {
	zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,			zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
	"failed to create mountpoint"));			"failed to create mountpoint"));
	return (zfs_error_fmt(hdl, EZFS_MOUNTFAILED,			return (zfs_error_fmt(hdl, EZFS_MOUNTFAILED,
	dgettext(TEXT_DOMAIN, "cannot mount '%s'"),			dgettext(TEXT_DOMAIN, "cannot mount '%s'"),
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