--- /dev/null
+/*
+ * 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
+ */
+
+
+#ifndef _ZFS_IOCTL_IMPL_H_
+#define _ZFS_IOCTL_IMPL_H_
+
+extern kmutex_t zfsdev_state_lock;
+extern zfsdev_state_t *zfsdev_state_list;
+
+typedef int zfs_ioc_legacy_func_t(zfs_cmd_t *);
+typedef int zfs_ioc_func_t(const char *, nvlist_t *, nvlist_t *);
+typedef int zfs_secpolicy_func_t(zfs_cmd_t *, nvlist_t *, cred_t *);
+
+typedef enum {
+ POOL_CHECK_NONE = 1 << 0,
+ POOL_CHECK_SUSPENDED = 1 << 1,
+ POOL_CHECK_READONLY = 1 << 2,
+} zfs_ioc_poolcheck_t;
+
+typedef enum {
+ NO_NAME,
+ POOL_NAME,
+ DATASET_NAME,
+ ENTITY_NAME
+} zfs_ioc_namecheck_t;
+
+/*
+ * IOC Keys are used to document and validate user->kernel interface inputs.
+ * See zfs_keys_recv_new for an example declaration. Any key name that is not
+ * listed will be rejected as input.
+ *
+ * The keyname 'optional' is always allowed, and must be an nvlist if present.
+ * Arguments which older kernels can safely ignore can be placed under the
+ * "optional" key.
+ *
+ * When adding new keys to an existing ioc for new functionality, consider:
+ * - adding an entry into zfs_sysfs.c zfs_features[] list
+ * - updating the libzfs_input_check.c test utility
+ *
+ * Note: in the ZK_WILDCARDLIST case, the name serves as documentation
+ * for the expected name (bookmark, snapshot, property, etc) but there
+ * is no validation in the preflight zfs_check_input_nvpairs() check.
+ */
+typedef enum {
+ ZK_OPTIONAL = 1 << 0, /* pair is optional */
+ ZK_WILDCARDLIST = 1 << 1, /* one or more unspecified key names */
+} ioc_key_flag_t;
+
+typedef struct zfs_ioc_key {
+ const char *zkey_name;
+ data_type_t zkey_type;
+ ioc_key_flag_t zkey_flags;
+} zfs_ioc_key_t;
+
+int zfs_secpolicy_config(zfs_cmd_t *, nvlist_t *, cred_t *);
+
+void zfs_ioctl_register_dataset_nolog(zfs_ioc_t, zfs_ioc_legacy_func_t *,
+ zfs_secpolicy_func_t *, zfs_ioc_poolcheck_t);
+
+void zfs_ioctl_register(const char *, zfs_ioc_t, zfs_ioc_func_t *,
+ zfs_secpolicy_func_t *, zfs_ioc_namecheck_t, zfs_ioc_poolcheck_t,
+ boolean_t, boolean_t, const zfs_ioc_key_t *, size_t);
+
+void zfs_ioctl_init_os(void);
+
+int zfs_vfs_ref(zfsvfs_t **);
+
+long zfsdev_ioctl_common(uint_t, unsigned long);
+int zfsdev_attach(void);
+void zfsdev_detach(void);
+int zfs_kmod_init(void);
+void zfs_kmod_fini(void);
+
+#endif
--- /dev/null
+/*
+ * 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) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Portions Copyright 2011 Martin Matuska
+ * Copyright 2015, OmniTI Computer Consulting, Inc. All rights reserved.
+ * Portions Copyright 2012 Pawel Jakub Dawidek <pawel@dawidek.net>
+ * Copyright (c) 2014, 2016 Joyent, Inc. All rights reserved.
+ * Copyright 2016 Nexenta Systems, Inc. All rights reserved.
+ * Copyright (c) 2014, Joyent, Inc. All rights reserved.
+ * Copyright (c) 2011, 2018 by Delphix. All rights reserved.
+ * Copyright (c) 2013 by Saso Kiselkov. All rights reserved.
+ * Copyright (c) 2013 Steven Hartland. All rights reserved.
+ * Copyright (c) 2014 Integros [integros.com]
+ * Copyright 2016 Toomas Soome <tsoome@me.com>
+ * Copyright (c) 2016 Actifio, Inc. All rights reserved.
+ * Copyright (c) 2018, loli10K <ezomori.nozomu@gmail.com>. All rights reserved.
+ * Copyright 2017 RackTop Systems.
+ * Copyright (c) 2017 Open-E, Inc. All Rights Reserved.
+ * Copyright (c) 2019 Datto Inc.
+ */
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/errno.h>
+#include <sys/uio.h>
+#include <sys/file.h>
+#include <sys/kmem.h>
+#include <sys/stat.h>
+#include <sys/zfs_ioctl.h>
+#include <sys/zfs_vfsops.h>
+#include <sys/zap.h>
+#include <sys/spa.h>
+#include <sys/nvpair.h>
+#include <sys/fs/zfs.h>
+#include <sys/zfs_ctldir.h>
+#include <sys/zfs_dir.h>
+#include <sys/zfs_onexit.h>
+#include <sys/zvol.h>
+#include <sys/fm/util.h>
+#include <sys/dsl_crypt.h>
+
+#include <sys/zfs_ioctl_impl.h>
+
+#include <sys/zfs_sysfs.h>
+#include <linux/miscdevice.h>
+#include <linux/slab.h>
+
+int
+zfs_vfs_ref(zfsvfs_t **zfvp)
+{
+ if (*zfvp == NULL || (*zfvp)->z_sb == NULL ||
+ !atomic_inc_not_zero(&((*zfvp)->z_sb->s_active))) {
+ return (SET_ERROR(ESRCH));
+ }
+ return (0);
+}
+
+static int
+zfsdev_state_init(struct file *filp)
+{
+ zfsdev_state_t *zs, *zsprev = NULL;
+ minor_t minor;
+ boolean_t newzs = B_FALSE;
+
+ ASSERT(MUTEX_HELD(&zfsdev_state_lock));
+
+ minor = zfsdev_minor_alloc();
+ if (minor == 0)
+ return (SET_ERROR(ENXIO));
+
+ for (zs = zfsdev_state_list; zs != NULL; zs = zs->zs_next) {
+ if (zs->zs_minor == -1)
+ break;
+ zsprev = zs;
+ }
+
+ if (!zs) {
+ zs = kmem_zalloc(sizeof (zfsdev_state_t), KM_SLEEP);
+ newzs = B_TRUE;
+ }
+
+ zs->zs_file = filp;
+ filp->private_data = zs;
+
+ zfs_onexit_init((zfs_onexit_t **)&zs->zs_onexit);
+ zfs_zevent_init((zfs_zevent_t **)&zs->zs_zevent);
+
+ /*
+ * In order to provide for lock-free concurrent read access
+ * to the minor list in zfsdev_get_state_impl(), new entries
+ * must be completely written before linking them into the
+ * list whereas existing entries are already linked; the last
+ * operation must be updating zs_minor (from -1 to the new
+ * value).
+ */
+ if (newzs) {
+ zs->zs_minor = minor;
+ smp_wmb();
+ zsprev->zs_next = zs;
+ } else {
+ smp_wmb();
+ zs->zs_minor = minor;
+ }
+
+ return (0);
+}
+
+static int
+zfsdev_state_destroy(struct file *filp)
+{
+ zfsdev_state_t *zs;
+
+ ASSERT(MUTEX_HELD(&zfsdev_state_lock));
+ ASSERT(filp->private_data != NULL);
+
+ zs = filp->private_data;
+ zs->zs_minor = -1;
+ zfs_onexit_destroy(zs->zs_onexit);
+ zfs_zevent_destroy(zs->zs_zevent);
+
+ return (0);
+}
+
+static int
+zfsdev_open(struct inode *ino, struct file *filp)
+{
+ int error;
+
+ mutex_enter(&zfsdev_state_lock);
+ error = zfsdev_state_init(filp);
+ mutex_exit(&zfsdev_state_lock);
+
+ return (-error);
+}
+
+static int
+zfsdev_release(struct inode *ino, struct file *filp)
+{
+ int error;
+
+ mutex_enter(&zfsdev_state_lock);
+ error = zfsdev_state_destroy(filp);
+ mutex_exit(&zfsdev_state_lock);
+
+ return (-error);
+}
+
+static long
+zfsdev_ioctl(struct file *filp, unsigned cmd, unsigned long arg)
+{
+ uint_t vecnum;
+
+ vecnum = cmd - ZFS_IOC_FIRST;
+ return (zfsdev_ioctl_common(vecnum, arg));
+}
+
+int
+zfsdev_getminor(struct file *filp, minor_t *minorp)
+{
+ zfsdev_state_t *zs, *fpd;
+
+ ASSERT(filp != NULL);
+ ASSERT(!MUTEX_HELD(&zfsdev_state_lock));
+
+ fpd = filp->private_data;
+ if (fpd == NULL)
+ return (SET_ERROR(EBADF));
+
+ mutex_enter(&zfsdev_state_lock);
+
+ for (zs = zfsdev_state_list; zs != NULL; zs = zs->zs_next) {
+
+ if (zs->zs_minor == -1)
+ continue;
+
+ if (fpd == zs) {
+ *minorp = fpd->zs_minor;
+ mutex_exit(&zfsdev_state_lock);
+ return (0);
+ }
+ }
+
+ mutex_exit(&zfsdev_state_lock);
+
+ return (SET_ERROR(EBADF));
+}
+
+void
+zfs_ioctl_init_os(void)
+{
+}
+
+#ifdef CONFIG_COMPAT
+static long
+zfsdev_compat_ioctl(struct file *filp, unsigned cmd, unsigned long arg)
+{
+ return (zfsdev_ioctl(filp, cmd, arg));
+}
+#else
+#define zfsdev_compat_ioctl NULL
+#endif
+
+static const struct file_operations zfsdev_fops = {
+ .open = zfsdev_open,
+ .release = zfsdev_release,
+ .unlocked_ioctl = zfsdev_ioctl,
+ .compat_ioctl = zfsdev_compat_ioctl,
+ .owner = THIS_MODULE,
+};
+
+static struct miscdevice zfs_misc = {
+ .minor = ZFS_DEVICE_MINOR,
+ .name = ZFS_DRIVER,
+ .fops = &zfsdev_fops,
+};
+
+MODULE_ALIAS_MISCDEV(ZFS_DEVICE_MINOR);
+MODULE_ALIAS("devname:zfs");
+
+int
+zfsdev_attach(void)
+{
+ int error;
+
+ error = misc_register(&zfs_misc);
+ if (error == -EBUSY) {
+ /*
+ * Fallback to dynamic minor allocation in the event of a
+ * collision with a reserved minor in linux/miscdevice.h.
+ * In this case the kernel modules must be manually loaded.
+ */
+ printk(KERN_INFO "ZFS: misc_register() with static minor %d "
+ "failed %d, retrying with MISC_DYNAMIC_MINOR\n",
+ ZFS_DEVICE_MINOR, error);
+
+ zfs_misc.minor = MISC_DYNAMIC_MINOR;
+ error = misc_register(&zfs_misc);
+ }
+
+ if (error)
+ printk(KERN_INFO "ZFS: misc_register() failed %d\n", error);
+
+ return (error);
+}
+
+void
+zfsdev_detach(void)
+{
+ misc_deregister(&zfs_misc);
+}
+
+#ifdef DEBUG
+#define ZFS_DEBUG_STR " (DEBUG mode)"
+#else
+#define ZFS_DEBUG_STR ""
+#endif
+
+static int __init
+_init(void)
+{
+ int error;
+
+ if ((error = zfs_kmod_init()) != 0) {
+ printk(KERN_NOTICE "ZFS: Failed to Load ZFS Filesystem v%s-%s%s"
+ ", rc = %d\n", ZFS_META_VERSION, ZFS_META_RELEASE,
+ ZFS_DEBUG_STR, error);
+
+ return (-error);
+ }
+
+ zfs_sysfs_init();
+
+ printk(KERN_NOTICE "ZFS: Loaded module v%s-%s%s, "
+ "ZFS pool version %s, ZFS filesystem version %s\n",
+ ZFS_META_VERSION, ZFS_META_RELEASE, ZFS_DEBUG_STR,
+ SPA_VERSION_STRING, ZPL_VERSION_STRING);
+#ifndef CONFIG_FS_POSIX_ACL
+ printk(KERN_NOTICE "ZFS: Posix ACLs disabled by kernel\n");
+#endif /* CONFIG_FS_POSIX_ACL */
+
+ return (0);
+}
+
+static void __exit
+_fini(void)
+{
+ zfs_sysfs_fini();
+ zfs_kmod_fini();
+
+ printk(KERN_NOTICE "ZFS: Unloaded module v%s-%s%s\n",
+ ZFS_META_VERSION, ZFS_META_RELEASE, ZFS_DEBUG_STR);
+}
+
+#if defined(_KERNEL)
+module_init(_init);
+module_exit(_fini);
+
+MODULE_DESCRIPTION("ZFS");
+MODULE_AUTHOR(ZFS_META_AUTHOR);
+MODULE_LICENSE(ZFS_META_LICENSE);
+MODULE_VERSION(ZFS_META_VERSION "-" ZFS_META_RELEASE);
+#endif
#include <sys/dsl_scan.h>
#include <sys/fm/util.h>
#include <sys/dsl_crypt.h>
+#include <sys/rrwlock.h>
#include <sys/dmu_recv.h>
#include <sys/dmu_send.h>
#include <sys/zcp.h>
#include <sys/zio_checksum.h>
#include <sys/vdev_removal.h>
-#include <sys/zfs_sysfs.h>
#include <sys/vdev_impl.h>
#include <sys/vdev_initialize.h>
#include <sys/vdev_trim.h>
-#include <linux/miscdevice.h>
-#include <linux/slab.h>
-
#include "zfs_namecheck.h"
#include "zfs_prop.h"
#include "zfs_deleg.h"
#include <sys/lua/lua.h>
#include <sys/lua/lauxlib.h>
-
-/*
- * Limit maximum nvlist size. We don't want users passing in insane values
- * for zc->zc_nvlist_src_size, since we will need to allocate that much memory.
- */
-#define MAX_NVLIST_SRC_SIZE KMALLOC_MAX_SIZE
+#include <sys/zfs_ioctl_impl.h>
kmutex_t zfsdev_state_lock;
zfsdev_state_t *zfsdev_state_list;
extern void zfs_init(void);
extern void zfs_fini(void);
-uint_t zfs_fsyncer_key;
-extern uint_t rrw_tsd_key;
-static uint_t zfs_allow_log_key;
-
-typedef int zfs_ioc_legacy_func_t(zfs_cmd_t *);
-typedef int zfs_ioc_func_t(const char *, nvlist_t *, nvlist_t *);
-typedef int zfs_secpolicy_func_t(zfs_cmd_t *, nvlist_t *, cred_t *);
-
/*
- * IOC Keys are used to document and validate user->kernel interface inputs.
- * See zfs_keys_recv_new for an example declaration. Any key name that is not
- * listed will be rejected as input.
- *
- * The keyname 'optional' is always allowed, and must be an nvlist if present.
- * Arguments which older kernels can safely ignore can be placed under the
- * "optional" key.
- *
- * When adding new keys to an existing ioc for new functionality, consider:
- * - adding an entry into zfs_sysfs.c zfs_features[] list
- * - updating the libzfs_input_check.c test utility
- *
- * Note: in the ZK_WILDCARDLIST case, the name serves as documentation
- * for the expected name (bookmark, snapshot, property, etc) but there
- * is no validation in the preflight zfs_check_input_nvpairs() check.
+ * Limit maximum nvlist size. We don't want users passing in insane values
+ * for zc->zc_nvlist_src_size, since we will need to allocate that much memory.
*/
-typedef enum {
- ZK_OPTIONAL = 1 << 0, /* pair is optional */
- ZK_WILDCARDLIST = 1 << 1, /* one or more unspecified key names */
-} ioc_key_flag_t;
+#define MAX_NVLIST_SRC_SIZE KMALLOC_MAX_SIZE
+
+uint_t zfs_fsyncer_key;
+uint_t zfs_allow_log_key;
/* DATA_TYPE_ANY is used when zkey_type can vary. */
#define DATA_TYPE_ANY DATA_TYPE_UNKNOWN
-typedef struct zfs_ioc_key {
- const char *zkey_name;
- data_type_t zkey_type;
- ioc_key_flag_t zkey_flags;
-} zfs_ioc_key_t;
-
-typedef enum {
- NO_NAME,
- POOL_NAME,
- DATASET_NAME,
- ENTITY_NAME
-} zfs_ioc_namecheck_t;
-
-typedef enum {
- POOL_CHECK_NONE = 1 << 0,
- POOL_CHECK_SUSPENDED = 1 << 1,
- POOL_CHECK_READONLY = 1 << 2,
-} zfs_ioc_poolcheck_t;
-
typedef struct zfs_ioc_vec {
zfs_ioc_legacy_func_t *zvec_legacy_func;
zfs_ioc_func_t *zvec_func;
{
uint64_t zoned;
- if (dsl_prop_get_integer(dataset, "zoned", &zoned, NULL))
+ if (dsl_prop_get_integer(dataset, zfs_prop_to_name(ZFS_PROP_ZONED),
+ &zoned, NULL))
return (SET_ERROR(ENOENT));
return (zfs_dozonecheck_impl(dataset, zoned, cr));
{
uint64_t zoned;
- if (dsl_prop_get_int_ds(ds, "zoned", &zoned))
+ if (dsl_prop_get_int_ds(ds, zfs_prop_to_name(ZFS_PROP_ZONED), &zoned))
return (SET_ERROR(ENOENT));
return (zfs_dozonecheck_impl(dataset, zoned, cr));
* limit on things *under* (ie. contained by)
* the thing they own.
*/
- if (dsl_prop_get_integer(dsname, "zoned", &zoned,
- setpoint))
+ if (dsl_prop_get_integer(dsname,
+ zfs_prop_to_name(ZFS_PROP_ZONED), &zoned, setpoint))
return (SET_ERROR(EPERM));
if (!zoned || strlen(dsname) <= strlen(setpoint))
return (SET_ERROR(EPERM));
* SYS_CONFIG privilege, which is not available in a local zone.
*/
/* ARGSUSED */
-static int
+int
zfs_secpolicy_config(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
{
if (secpolicy_sys_config(cr, B_FALSE) != 0)
mutex_enter(&os->os_user_ptr_lock);
*zfvp = dmu_objset_get_user(os);
/* bump s_active only when non-zero to prevent umount race */
- if (*zfvp == NULL || (*zfvp)->z_sb == NULL ||
- !atomic_inc_not_zero(&((*zfvp)->z_sb->s_active))) {
- error = SET_ERROR(ESRCH);
- }
+ error = zfs_vfs_ref(zfvp);
mutex_exit(&os->os_user_ptr_lock);
return (error);
}
*/
static const zfs_ioc_key_t zfs_keys_destroy_snaps[] = {
{"snaps", DATA_TYPE_NVLIST, 0},
- {"defer", DATA_TYPE_BOOLEAN, ZK_OPTIONAL},
+ {"defer", DATA_TYPE_BOOLEAN, ZK_OPTIONAL},
};
/* ARGSUSED */
static int
zfs_ioc_destroy_snaps(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl)
{
+ int poollen;
nvlist_t *snaps;
nvpair_t *pair;
boolean_t defer;
+ spa_t *spa;
snaps = fnvlist_lookup_nvlist(innvl, "snaps");
defer = nvlist_exists(innvl, "defer");
+ poollen = strlen(poolname);
for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL;
pair = nvlist_next_nvpair(snaps, pair)) {
+ const char *name = nvpair_name(pair);
+
+ /*
+ * The snap must be in the specified pool to prevent the
+ * invalid removal of zvol minors below.
+ */
+ if (strncmp(name, poolname, poollen) != 0 ||
+ (name[poollen] != '/' && name[poollen] != '@'))
+ return (SET_ERROR(EXDEV));
+
zfs_unmount_snap(nvpair_name(pair));
+ if (spa_open(name, &spa, FTAG) == 0) {
+ zvol_remove_minors(spa, name, B_TRUE);
+ spa_close(spa, FTAG);
+ }
}
return (dsl_destroy_snapshots_nvl(snaps, defer, outnvl));
nvarg = fnvlist_lookup_nvpair(innvl, ZCP_ARG_ARGLIST);
if (instrlimit == 0 || instrlimit > zfs_lua_max_instrlimit)
- return (EINVAL);
+ return (SET_ERROR(EINVAL));
if (memlimit == 0 || memlimit > zfs_lua_max_memlimit)
- return (EINVAL);
+ return (SET_ERROR(EINVAL));
return (zcp_eval(poolname, program, sync_flag, instrlimit, memlimit,
nvarg, outnvl));
return (delayprops);
}
+static void
+zfs_allow_log_destroy(void *arg)
+{
+ char *poolname = arg;
+
+ if (poolname != NULL)
+ strfree(poolname);
+}
+
#ifdef DEBUG
static boolean_t zfs_ioc_recv_inject_err;
#endif
* outnvl is unused
*/
static const zfs_ioc_key_t zfs_keys_pool_reopen[] = {
- {"scrub_restart", DATA_TYPE_BOOLEAN_VALUE, 0},
+ {"scrub_restart", DATA_TYPE_BOOLEAN_VALUE, ZK_OPTIONAL},
};
/* ARGSUSED */
{
spa_t *spa;
int error;
- boolean_t scrub_restart = B_TRUE;
+ boolean_t rc, scrub_restart = B_TRUE;
if (innvl) {
- scrub_restart = fnvlist_lookup_boolean_value(innvl,
- "scrub_restart");
+ error = nvlist_lookup_boolean_value(innvl,
+ "scrub_restart", &rc);
+ if (error == 0)
+ scrub_restart = rc;
}
error = spa_open(pool, &spa, FTAG);
if (nvlist_lookup_int32(args, "cleanup_fd", &cleanup_fd) == 0) {
error = zfs_onexit_fd_hold(cleanup_fd, &minor);
if (error != 0)
- return (error);
+ return (SET_ERROR(error));
}
error = dsl_dataset_user_hold(holds, minor, errlist);
if (minor != 0)
zfs_onexit_fd_rele(cleanup_fd);
- return (error);
+ return (SET_ERROR(error));
}
/*
* See the block comment at the beginning of this file for details on
* each argument to this function.
*/
-static void
+void
zfs_ioctl_register(const char *name, zfs_ioc_t ioc, zfs_ioc_func_t *func,
zfs_secpolicy_func_t *secpolicy, zfs_ioc_namecheck_t namecheck,
zfs_ioc_poolcheck_t pool_check, boolean_t smush_outnvlist,
POOL_NAME, log_history, pool_check);
}
-static void
+void
zfs_ioctl_register_dataset_nolog(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func,
zfs_secpolicy_func_t *secpolicy, zfs_ioc_poolcheck_t pool_check)
{
DATASET_NAME, B_TRUE, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY);
}
-static void
+void
zfs_ioctl_init(void)
{
zfs_ioctl_register("snapshot", ZFS_IOC_SNAPSHOT,
zfs_ioc_tmp_snapshot, zfs_secpolicy_tmp_snapshot,
POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY);
- /*
- * ZoL functions
- */
zfs_ioctl_register_legacy(ZFS_IOC_EVENTS_NEXT, zfs_ioc_events_next,
zfs_secpolicy_config, NO_NAME, B_FALSE, POOL_CHECK_NONE);
zfs_ioctl_register_legacy(ZFS_IOC_EVENTS_CLEAR, zfs_ioc_events_clear,
zfs_secpolicy_config, NO_NAME, B_FALSE, POOL_CHECK_NONE);
zfs_ioctl_register_legacy(ZFS_IOC_EVENTS_SEEK, zfs_ioc_events_seek,
zfs_secpolicy_config, NO_NAME, B_FALSE, POOL_CHECK_NONE);
+
+ zfs_ioctl_init_os();
}
/*
return (ptr);
}
-int
-zfsdev_getminor(struct file *filp, minor_t *minorp)
-{
- zfsdev_state_t *zs, *fpd;
-
- ASSERT(filp != NULL);
- ASSERT(!MUTEX_HELD(&zfsdev_state_lock));
-
- fpd = filp->private_data;
- if (fpd == NULL)
- return (SET_ERROR(EBADF));
-
- mutex_enter(&zfsdev_state_lock);
-
- for (zs = zfsdev_state_list; zs != NULL; zs = zs->zs_next) {
-
- if (zs->zs_minor == -1)
- continue;
-
- if (fpd == zs) {
- *minorp = fpd->zs_minor;
- mutex_exit(&zfsdev_state_lock);
- return (0);
- }
- }
-
- mutex_exit(&zfsdev_state_lock);
-
- return (SET_ERROR(EBADF));
-}
-
/*
* Find a free minor number. The zfsdev_state_list is expected to
* be short since it is only a list of currently open file handles.
return (0);
}
-static int
-zfsdev_state_init(struct file *filp)
-{
- zfsdev_state_t *zs, *zsprev = NULL;
- minor_t minor;
- boolean_t newzs = B_FALSE;
-
- ASSERT(MUTEX_HELD(&zfsdev_state_lock));
-
- minor = zfsdev_minor_alloc();
- if (minor == 0)
- return (SET_ERROR(ENXIO));
-
- for (zs = zfsdev_state_list; zs != NULL; zs = zs->zs_next) {
- if (zs->zs_minor == -1)
- break;
- zsprev = zs;
- }
-
- if (!zs) {
- zs = kmem_zalloc(sizeof (zfsdev_state_t), KM_SLEEP);
- newzs = B_TRUE;
- }
-
- zs->zs_file = filp;
- filp->private_data = zs;
-
- zfs_onexit_init((zfs_onexit_t **)&zs->zs_onexit);
- zfs_zevent_init((zfs_zevent_t **)&zs->zs_zevent);
-
-
- /*
- * In order to provide for lock-free concurrent read access
- * to the minor list in zfsdev_get_state_impl(), new entries
- * must be completely written before linking them into the
- * list whereas existing entries are already linked; the last
- * operation must be updating zs_minor (from -1 to the new
- * value).
- */
- if (newzs) {
- zs->zs_minor = minor;
- smp_wmb();
- zsprev->zs_next = zs;
- } else {
- smp_wmb();
- zs->zs_minor = minor;
- }
-
- return (0);
-}
-
-static int
-zfsdev_state_destroy(struct file *filp)
-{
- zfsdev_state_t *zs;
-
- ASSERT(MUTEX_HELD(&zfsdev_state_lock));
- ASSERT(filp->private_data != NULL);
-
- zs = filp->private_data;
- zs->zs_minor = -1;
- zfs_onexit_destroy(zs->zs_onexit);
- zfs_zevent_destroy(zs->zs_zevent);
-
- return (0);
-}
-
-static int
-zfsdev_open(struct inode *ino, struct file *filp)
-{
- int error;
-
- mutex_enter(&zfsdev_state_lock);
- error = zfsdev_state_init(filp);
- mutex_exit(&zfsdev_state_lock);
-
- return (-error);
-}
-
-static int
-zfsdev_release(struct inode *ino, struct file *filp)
-{
- int error;
-
- mutex_enter(&zfsdev_state_lock);
- error = zfsdev_state_destroy(filp);
- mutex_exit(&zfsdev_state_lock);
-
- return (-error);
-}
-
-static long
-zfsdev_ioctl(struct file *filp, unsigned cmd, unsigned long arg)
+long
+zfsdev_ioctl_common(uint_t vecnum, unsigned long arg)
{
zfs_cmd_t *zc;
- uint_t vecnum;
- int error, rc, flag = 0;
+ int error, cmd, rc, flag = 0;
const zfs_ioc_vec_t *vec;
char *saved_poolname = NULL;
nvlist_t *innvl = NULL;
fstrans_cookie_t cookie;
- vecnum = cmd - ZFS_IOC_FIRST;
+ cmd = vecnum;
if (vecnum >= sizeof (zfs_ioc_vec) / sizeof (zfs_ioc_vec[0]))
return (-SET_ERROR(ZFS_ERR_IOC_CMD_UNAVAIL));
vec = &zfs_ioc_vec[vecnum];
return (-error);
}
-#ifdef CONFIG_COMPAT
-static long
-zfsdev_compat_ioctl(struct file *filp, unsigned cmd, unsigned long arg)
+int
+zfs_kmod_init(void)
{
- return (zfsdev_ioctl(filp, cmd, arg));
-}
-#else
-#define zfsdev_compat_ioctl NULL
-#endif
-
-static const struct file_operations zfsdev_fops = {
- .open = zfsdev_open,
- .release = zfsdev_release,
- .unlocked_ioctl = zfsdev_ioctl,
- .compat_ioctl = zfsdev_compat_ioctl,
- .owner = THIS_MODULE,
-};
+ int error;
-static struct miscdevice zfs_misc = {
- .minor = ZFS_DEVICE_MINOR,
- .name = ZFS_DRIVER,
- .fops = &zfsdev_fops,
-};
+ if ((error = zvol_init()) != 0)
+ return (error);
-MODULE_ALIAS_MISCDEV(ZFS_DEVICE_MINOR);
-MODULE_ALIAS("devname:zfs");
+ spa_init(FREAD | FWRITE);
+ zfs_init();
-static int
-zfs_attach(void)
-{
- int error;
+ zfs_ioctl_init();
mutex_init(&zfsdev_state_lock, NULL, MUTEX_DEFAULT, NULL);
zfsdev_state_list = kmem_zalloc(sizeof (zfsdev_state_t), KM_SLEEP);
zfsdev_state_list->zs_minor = -1;
- error = misc_register(&zfs_misc);
- if (error == -EBUSY) {
- /*
- * Fallback to dynamic minor allocation in the event of a
- * collision with a reserved minor in linux/miscdevice.h.
- * In this case the kernel modules must be manually loaded.
- */
- printk(KERN_INFO "ZFS: misc_register() with static minor %d "
- "failed %d, retrying with MISC_DYNAMIC_MINOR\n",
- ZFS_DEVICE_MINOR, error);
+ if ((error = zfsdev_attach()) != 0)
+ goto out;
- zfs_misc.minor = MISC_DYNAMIC_MINOR;
- error = misc_register(&zfs_misc);
- }
+ tsd_create(&zfs_fsyncer_key, NULL);
+ tsd_create(&rrw_tsd_key, rrw_tsd_destroy);
+ tsd_create(&zfs_allow_log_key, zfs_allow_log_destroy);
- if (error)
- printk(KERN_INFO "ZFS: misc_register() failed %d\n", error);
+ return (0);
+out:
+ zfs_fini();
+ spa_fini();
+ zvol_fini();
return (error);
}
-static void
-zfs_detach(void)
+void
+zfs_kmod_fini(void)
{
zfsdev_state_t *zs, *zsprev = NULL;
- misc_deregister(&zfs_misc);
+ zfsdev_detach();
+
mutex_destroy(&zfsdev_state_lock);
for (zs = zfsdev_state_list; zs != NULL; zs = zs->zs_next) {
}
if (zsprev)
kmem_free(zsprev, sizeof (zfsdev_state_t));
-}
-
-static void
-zfs_allow_log_destroy(void *arg)
-{
- char *poolname = arg;
-
- if (poolname != NULL)
- strfree(poolname);
-}
-#ifdef DEBUG
-#define ZFS_DEBUG_STR " (DEBUG mode)"
-#else
-#define ZFS_DEBUG_STR ""
-#endif
-
-static int __init
-_init(void)
-{
- int error;
-
- if ((error = zvol_init()) != 0)
- return (error);
-
- spa_init(FREAD | FWRITE);
- zfs_init();
-
- zfs_ioctl_init();
- zfs_sysfs_init();
-
- if ((error = zfs_attach()) != 0)
- goto out;
-
- tsd_create(&zfs_fsyncer_key, NULL);
- tsd_create(&rrw_tsd_key, rrw_tsd_destroy);
- tsd_create(&zfs_allow_log_key, zfs_allow_log_destroy);
-
- printk(KERN_NOTICE "ZFS: Loaded module v%s-%s%s, "
- "ZFS pool version %s, ZFS filesystem version %s\n",
- ZFS_META_VERSION, ZFS_META_RELEASE, ZFS_DEBUG_STR,
- SPA_VERSION_STRING, ZPL_VERSION_STRING);
-#ifndef CONFIG_FS_POSIX_ACL
- printk(KERN_NOTICE "ZFS: Posix ACLs disabled by kernel\n");
-#endif /* CONFIG_FS_POSIX_ACL */
-
- return (0);
-
-out:
- zfs_sysfs_fini();
- zfs_fini();
- spa_fini();
- (void) zvol_fini();
- printk(KERN_NOTICE "ZFS: Failed to Load ZFS Filesystem v%s-%s%s"
- ", rc = %d\n", ZFS_META_VERSION, ZFS_META_RELEASE,
- ZFS_DEBUG_STR, error);
-
- return (error);
-}
-
-static void __exit
-_fini(void)
-{
- zfs_detach();
- zfs_sysfs_fini();
zfs_fini();
spa_fini();
zvol_fini();
tsd_destroy(&zfs_fsyncer_key);
tsd_destroy(&rrw_tsd_key);
tsd_destroy(&zfs_allow_log_key);
-
- printk(KERN_NOTICE "ZFS: Unloaded module v%s-%s%s\n",
- ZFS_META_VERSION, ZFS_META_RELEASE, ZFS_DEBUG_STR);
}
-
-#if defined(_KERNEL)
-module_init(_init);
-module_exit(_fini);
-
-MODULE_DESCRIPTION("ZFS");
-MODULE_AUTHOR(ZFS_META_AUTHOR);
-MODULE_LICENSE(ZFS_META_LICENSE);
-MODULE_VERSION(ZFS_META_VERSION "-" ZFS_META_RELEASE);
-#endif
projects / zfs / commitdiff