diff options
Diffstat (limited to 'lib/libzfs/os/freebsd/libzfs_ioctl_compat.c')
| -rw-r--r-- | lib/libzfs/os/freebsd/libzfs_ioctl_compat.c | 432 |
1 files changed, 432 insertions, 0 deletions
diff --git a/lib/libzfs/os/freebsd/libzfs_ioctl_compat.c b/lib/libzfs/os/freebsd/libzfs_ioctl_compat.c new file mode 100644 index 000000000..18b93fe27 --- /dev/null +++ b/lib/libzfs/os/freebsd/libzfs_ioctl_compat.c @@ -0,0 +1,432 @@ +/* + * 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 2013 Xin Li <[email protected]>. All rights reserved. + * Copyright 2013 Martin Matuska <[email protected]>. All rights reserved. + * Portions Copyright 2005, 2010, Oracle and/or its affiliates. + * All rights reserved. + * Use is subject to license terms. + */ + +#include <sys/types.h> +#include <sys/param.h> +#include <sys/cred.h> +#include <sys/dmu.h> +#include <sys/zio.h> +#include <sys/nvpair.h> +#include <sys/dsl_deleg.h> +#include <sys/zfs_ioctl.h> +#include "zfs_namecheck.h" +#include <os/freebsd/zfs/sys/zfs_ioctl_compat.h> + +/* + * FreeBSD zfs_cmd compatibility with older binaries + * appropriately remap/extend the zfs_cmd_t structure + */ +void +zfs_cmd_compat_get(zfs_cmd_t *zc, caddr_t addr, const int cflag) +{ + +} +#if 0 +static int +zfs_ioctl_compat_get_nvlist(uint64_t nvl, size_t size, int iflag, + nvlist_t **nvp) +{ + char *packed; + int error; + nvlist_t *list = NULL; + + /* + * Read in and unpack the user-supplied nvlist. + */ + if (size == 0) + return (EINVAL); + +#ifdef _KERNEL + packed = kmem_alloc(size, KM_SLEEP); + if ((error = ddi_copyin((void *)(uintptr_t)nvl, packed, size, + iflag)) != 0) { + kmem_free(packed, size); + return (error); + } +#else + packed = (void *)(uintptr_t)nvl; +#endif + + error = nvlist_unpack(packed, size, &list, 0); + +#ifdef _KERNEL + kmem_free(packed, size); +#endif + + if (error != 0) + return (error); + + *nvp = list; + return (0); +} + +static int +zfs_ioctl_compat_put_nvlist(zfs_cmd_t *zc, nvlist_t *nvl) +{ + char *packed = NULL; + int error = 0; + size_t size; + + VERIFY(nvlist_size(nvl, &size, NV_ENCODE_NATIVE) == 0); + +#ifdef _KERNEL + packed = kmem_alloc(size, KM_SLEEP); + VERIFY(nvlist_pack(nvl, &packed, &size, NV_ENCODE_NATIVE, + KM_SLEEP) == 0); + + if (ddi_copyout(packed, + (void *)(uintptr_t)zc->zc_nvlist_dst, size, zc->zc_iflags) != 0) + error = EFAULT; + kmem_free(packed, size); +#else + packed = (void *)(uintptr_t)zc->zc_nvlist_dst; + VERIFY(nvlist_pack(nvl, &packed, &size, NV_ENCODE_NATIVE, + 0) == 0); +#endif + + zc->zc_nvlist_dst_size = size; + return (error); +} + +static void +zfs_ioctl_compat_fix_stats_nvlist(nvlist_t *nvl) +{ + nvlist_t **child; + nvlist_t *nvroot = NULL; + vdev_stat_t *vs; + uint_t c, children, nelem; + + if (nvlist_lookup_nvlist_array(nvl, ZPOOL_CONFIG_CHILDREN, + &child, &children) == 0) { + for (c = 0; c < children; c++) { + zfs_ioctl_compat_fix_stats_nvlist(child[c]); + } + } + + if (nvlist_lookup_nvlist(nvl, ZPOOL_CONFIG_VDEV_TREE, + &nvroot) == 0) + zfs_ioctl_compat_fix_stats_nvlist(nvroot); + if ((nvlist_lookup_uint64_array(nvl, "stats", + (uint64_t **)&vs, &nelem) == 0)) { + nvlist_add_uint64_array(nvl, + ZPOOL_CONFIG_VDEV_STATS, + (uint64_t *)vs, nelem); + nvlist_remove(nvl, "stats", + DATA_TYPE_UINT64_ARRAY); + } +} + + +static int +zfs_ioctl_compat_fix_stats(zfs_cmd_t *zc, const int nc) +{ + nvlist_t *nv, *nvp = NULL; + nvpair_t *elem; + int error; + + if ((error = zfs_ioctl_compat_get_nvlist(zc->zc_nvlist_dst, + zc->zc_nvlist_dst_size, zc->zc_iflags, &nv)) != 0) + return (error); + + if (nc == 5) { /* ZFS_IOC_POOL_STATS */ + elem = NULL; + while ((elem = nvlist_next_nvpair(nv, elem)) != NULL) { + if (nvpair_value_nvlist(elem, &nvp) == 0) + zfs_ioctl_compat_fix_stats_nvlist(nvp); + } + elem = NULL; + } else + zfs_ioctl_compat_fix_stats_nvlist(nv); + + error = zfs_ioctl_compat_put_nvlist(zc, nv); + + nvlist_free(nv); + + return (error); +} + +static int +zfs_ioctl_compat_pool_get_props(zfs_cmd_t *zc) +{ + nvlist_t *nv, *nva = NULL; + int error; + + if ((error = zfs_ioctl_compat_get_nvlist(zc->zc_nvlist_dst, + zc->zc_nvlist_dst_size, zc->zc_iflags, &nv)) != 0) + return (error); + + if (nvlist_lookup_nvlist(nv, "used", &nva) == 0) { + nvlist_add_nvlist(nv, "allocated", nva); + nvlist_remove(nv, "used", DATA_TYPE_NVLIST); + } + + if (nvlist_lookup_nvlist(nv, "available", &nva) == 0) { + nvlist_add_nvlist(nv, "free", nva); + nvlist_remove(nv, "available", DATA_TYPE_NVLIST); + } + + error = zfs_ioctl_compat_put_nvlist(zc, nv); + + nvlist_free(nv); + + return (error); +} +#endif + +#ifdef _KERNEL +int +zfs_ioctl_compat_pre(zfs_cmd_t *zc, int *vec, const int cflag) +{ + int error = 0; + + /* are we creating a clone? */ + if (*vec == ZFS_IOC_CREATE && zc->zc_value[0] != '\0') + *vec = ZFS_IOC_CLONE; + + if (cflag == ZFS_CMD_COMPAT_V15) { + switch (*vec) { + + case 7: /* ZFS_IOC_POOL_SCRUB (v15) */ + zc->zc_cookie = POOL_SCAN_SCRUB; + break; + } + } + + return (error); +} + +void +zfs_ioctl_compat_post(zfs_cmd_t *zc, int vec, const int cflag) +{ + if (cflag == ZFS_CMD_COMPAT_V15) { + switch (vec) { + case ZFS_IOC_POOL_CONFIGS: + case ZFS_IOC_POOL_STATS: + case ZFS_IOC_POOL_TRYIMPORT: + zfs_ioctl_compat_fix_stats(zc, vec); + break; + case 41: /* ZFS_IOC_POOL_GET_PROPS (v15) */ + zfs_ioctl_compat_pool_get_props(zc); + break; + } + } +} + +nvlist_t * +zfs_ioctl_compat_innvl(zfs_cmd_t *zc, nvlist_t *innvl, const int vec, + const int cflag) +{ + nvlist_t *nvl, *tmpnvl, *hnvl; + nvpair_t *elem; + char *poolname, *snapname; + int err; + + if (cflag == ZFS_CMD_COMPAT_NONE || cflag == ZFS_CMD_COMPAT_LZC || + cflag == ZFS_CMD_COMPAT_ZCMD || cflag == ZFS_CMD_COMPAT_EDBP || + cflag == ZFS_CMD_COMPAT_RESUME || cflag == ZFS_CMD_COMPAT_INLANES) + goto out; + + switch (vec) { + case ZFS_IOC_CREATE: + nvl = fnvlist_alloc(); + fnvlist_add_int32(nvl, "type", zc->zc_objset_type); + if (innvl != NULL) { + fnvlist_add_nvlist(nvl, "props", innvl); + nvlist_free(innvl); + } + return (nvl); + break; + case ZFS_IOC_CLONE: + nvl = fnvlist_alloc(); + fnvlist_add_string(nvl, "origin", zc->zc_value); + if (innvl != NULL) { + fnvlist_add_nvlist(nvl, "props", innvl); + nvlist_free(innvl); + } + return (nvl); + break; + case ZFS_IOC_SNAPSHOT: + if (innvl == NULL) + goto out; + nvl = fnvlist_alloc(); + fnvlist_add_nvlist(nvl, "props", innvl); + tmpnvl = fnvlist_alloc(); + snapname = kmem_asprintf("%s@%s", zc->zc_name, zc->zc_value); + fnvlist_add_boolean(tmpnvl, snapname); + kmem_free(snapname, strlen(snapname + 1)); + /* check if we are doing a recursive snapshot */ + if (zc->zc_cookie) + dmu_get_recursive_snaps_nvl(zc->zc_name, zc->zc_value, + tmpnvl); + fnvlist_add_nvlist(nvl, "snaps", tmpnvl); + fnvlist_free(tmpnvl); + nvlist_free(innvl); + /* strip dataset part from zc->zc_name */ + zc->zc_name[strcspn(zc->zc_name, "/@")] = '\0'; + return (nvl); + break; + case ZFS_IOC_SPACE_SNAPS: + nvl = fnvlist_alloc(); + fnvlist_add_string(nvl, "firstsnap", zc->zc_value); + if (innvl != NULL) + nvlist_free(innvl); + return (nvl); + break; + case ZFS_IOC_DESTROY_SNAPS: + if (innvl == NULL && cflag == ZFS_CMD_COMPAT_DEADMAN) + goto out; + nvl = fnvlist_alloc(); + if (innvl != NULL) { + fnvlist_add_nvlist(nvl, "snaps", innvl); + } else { + /* + * We are probably called by even older binaries, + * allocate and populate nvlist with recursive + * snapshots + */ + if (zfs_component_namecheck(zc->zc_value, NULL, + NULL) == 0) { + tmpnvl = fnvlist_alloc(); + if (dmu_get_recursive_snaps_nvl(zc->zc_name, + zc->zc_value, tmpnvl) == 0) + fnvlist_add_nvlist(nvl, "snaps", + tmpnvl); + nvlist_free(tmpnvl); + } + } + if (innvl != NULL) + nvlist_free(innvl); + /* strip dataset part from zc->zc_name */ + zc->zc_name[strcspn(zc->zc_name, "/@")] = '\0'; + return (nvl); + break; + case ZFS_IOC_HOLD: + nvl = fnvlist_alloc(); + tmpnvl = fnvlist_alloc(); + if (zc->zc_cleanup_fd != -1) + fnvlist_add_int32(nvl, "cleanup_fd", + (int32_t)zc->zc_cleanup_fd); + if (zc->zc_cookie) { + hnvl = fnvlist_alloc(); + if (dmu_get_recursive_snaps_nvl(zc->zc_name, + zc->zc_value, hnvl) == 0) { + elem = NULL; + while ((elem = nvlist_next_nvpair(hnvl, + elem)) != NULL) { + nvlist_add_string(tmpnvl, + nvpair_name(elem), zc->zc_string); + } + } + nvlist_free(hnvl); + } else { + snapname = kmem_asprintf("%s@%s", zc->zc_name, + zc->zc_value); + nvlist_add_string(tmpnvl, snapname, zc->zc_string); + kmem_free(snapname, strlen(snapname + 1)); + } + fnvlist_add_nvlist(nvl, "holds", tmpnvl); + nvlist_free(tmpnvl); + if (innvl != NULL) + nvlist_free(innvl); + /* strip dataset part from zc->zc_name */ + zc->zc_name[strcspn(zc->zc_name, "/@")] = '\0'; + return (nvl); + break; + case ZFS_IOC_RELEASE: + nvl = fnvlist_alloc(); + tmpnvl = fnvlist_alloc(); + if (zc->zc_cookie) { + hnvl = fnvlist_alloc(); + if (dmu_get_recursive_snaps_nvl(zc->zc_name, + zc->zc_value, hnvl) == 0) { + elem = NULL; + while ((elem = nvlist_next_nvpair(hnvl, + elem)) != NULL) { + fnvlist_add_boolean(tmpnvl, + zc->zc_string); + fnvlist_add_nvlist(nvl, + nvpair_name(elem), tmpnvl); + } + } + nvlist_free(hnvl); + } else { + snapname = kmem_asprintf("%s@%s", zc->zc_name, + zc->zc_value); + fnvlist_add_boolean(tmpnvl, zc->zc_string); + fnvlist_add_nvlist(nvl, snapname, tmpnvl); + kmem_free(snapname, strlen(snapname + 1)); + } + nvlist_free(tmpnvl); + if (innvl != NULL) + nvlist_free(innvl); + /* strip dataset part from zc->zc_name */ + zc->zc_name[strcspn(zc->zc_name, "/@")] = '\0'; + return (nvl); + break; + } +out: + return (innvl); +} + +nvlist_t * +zfs_ioctl_compat_outnvl(zfs_cmd_t *zc, nvlist_t *outnvl, const int vec, + const int cflag) +{ + nvlist_t *tmpnvl; + + if (cflag == ZFS_CMD_COMPAT_NONE || cflag == ZFS_CMD_COMPAT_LZC || + cflag == ZFS_CMD_COMPAT_ZCMD || cflag == ZFS_CMD_COMPAT_EDBP || + cflag == ZFS_CMD_COMPAT_RESUME || cflag == ZFS_CMD_COMPAT_INLANES) + return (outnvl); + + switch (vec) { + case ZFS_IOC_SPACE_SNAPS: + (void) nvlist_lookup_uint64(outnvl, "used", &zc->zc_cookie); + (void) nvlist_lookup_uint64(outnvl, "compressed", + &zc->zc_objset_type); + (void) nvlist_lookup_uint64(outnvl, "uncompressed", + &zc->zc_perm_action); + nvlist_free(outnvl); + /* return empty outnvl */ + tmpnvl = fnvlist_alloc(); + return (tmpnvl); + break; + case ZFS_IOC_CREATE: + case ZFS_IOC_CLONE: + case ZFS_IOC_HOLD: + case ZFS_IOC_RELEASE: + nvlist_free(outnvl); + /* return empty outnvl */ + tmpnvl = fnvlist_alloc(); + return (tmpnvl); + break; + } + + return (outnvl); +} +#endif /* KERNEL */ |