529246df96
In Illumos it is possible to call ioctl functions from within the kernel by passing the FKIOCTL flag. Neither FreeBSD nor Linux support that, but it doesn't hurt to keep it around, as all the code is there. Before this commit it was a dead code and zc_iflags was always zero. Restore this functionality by allowing to pass a flag to the zfsdev_ioctl_common() function. Reviewed-by: Ryan Moeller <ryan@iXsystems.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Pawel Jakub Dawidek <pawel@dawidek.net> Closes #10417
96 lines
3.0 KiB
C
96 lines
3.0 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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#ifndef _ZFS_IOCTL_IMPL_H_
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#define _ZFS_IOCTL_IMPL_H_
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extern kmutex_t zfsdev_state_lock;
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extern zfsdev_state_t *zfsdev_state_list;
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typedef int zfs_ioc_legacy_func_t(zfs_cmd_t *);
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typedef int zfs_ioc_func_t(const char *, nvlist_t *, nvlist_t *);
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typedef int zfs_secpolicy_func_t(zfs_cmd_t *, nvlist_t *, cred_t *);
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typedef enum {
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POOL_CHECK_NONE = 1 << 0,
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POOL_CHECK_SUSPENDED = 1 << 1,
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POOL_CHECK_READONLY = 1 << 2,
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} zfs_ioc_poolcheck_t;
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typedef enum {
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NO_NAME,
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POOL_NAME,
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DATASET_NAME,
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ENTITY_NAME
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} zfs_ioc_namecheck_t;
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/*
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* IOC Keys are used to document and validate user->kernel interface inputs.
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* See zfs_keys_recv_new for an example declaration. Any key name that is not
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* listed will be rejected as input.
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*
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* The keyname 'optional' is always allowed, and must be an nvlist if present.
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* Arguments which older kernels can safely ignore can be placed under the
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* "optional" key.
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*
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* When adding new keys to an existing ioc for new functionality, consider:
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* - adding an entry into zfs_sysfs.c zfs_features[] list
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* - updating the libzfs_input_check.c test utility
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*
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* Note: in the ZK_WILDCARDLIST case, the name serves as documentation
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* for the expected name (bookmark, snapshot, property, etc) but there
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* is no validation in the preflight zfs_check_input_nvpairs() check.
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*/
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typedef enum {
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ZK_OPTIONAL = 1 << 0, /* pair is optional */
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ZK_WILDCARDLIST = 1 << 1, /* one or more unspecified key names */
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} ioc_key_flag_t;
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typedef struct zfs_ioc_key {
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const char *zkey_name;
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data_type_t zkey_type;
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ioc_key_flag_t zkey_flags;
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} zfs_ioc_key_t;
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int zfs_secpolicy_config(zfs_cmd_t *, nvlist_t *, cred_t *);
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void zfs_ioctl_register_dataset_nolog(zfs_ioc_t, zfs_ioc_legacy_func_t *,
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zfs_secpolicy_func_t *, zfs_ioc_poolcheck_t);
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void zfs_ioctl_register(const char *, zfs_ioc_t, zfs_ioc_func_t *,
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zfs_secpolicy_func_t *, zfs_ioc_namecheck_t, zfs_ioc_poolcheck_t,
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boolean_t, boolean_t, const zfs_ioc_key_t *, size_t);
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void zfs_ioctl_init_os(void);
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boolean_t zfs_vfs_held(zfsvfs_t *);
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int zfs_vfs_ref(zfsvfs_t **);
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void zfs_vfs_rele(zfsvfs_t *);
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long zfsdev_ioctl_common(uint_t, zfs_cmd_t *, int);
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int zfsdev_attach(void);
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void zfsdev_detach(void);
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int zfs_kmod_init(void);
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void zfs_kmod_fini(void);
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#endif
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