diff options
Diffstat (limited to 'include/sys/zfs_ioctl.h')
| -rw-r--r-- | include/sys/zfs_ioctl.h | 31 |
1 files changed, 24 insertions, 7 deletions
diff --git a/include/sys/zfs_ioctl.h b/include/sys/zfs_ioctl.h index c0cb4705d..21bfe2b8f 100644 --- a/include/sys/zfs_ioctl.h +++ b/include/sys/zfs_ioctl.h @@ -20,6 +20,7 @@ */ /* * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. + * Copyright (c) 2012 by Delphix. All rights reserved. */ #ifndef _SYS_ZFS_IOCTL_H @@ -41,6 +42,15 @@ extern "C" { #endif /* + * The structures in this file are passed between userland and the + * kernel. Userland may be running a 32-bit process, while the kernel + * is 64-bit. Therefore, these structures need to compile the same in + * 32-bit and 64-bit. This means not using type "long", and adding + * explicit padding so that the 32-bit structure will not be packed more + * tightly than the 64-bit structure (which requires 64-bit alignment). + */ + +/* * Property values for snapdir */ #define ZFS_SNAPDIR_HIDDEN 0 @@ -277,22 +287,29 @@ typedef enum zfs_case { } zfs_case_t; typedef struct zfs_cmd { - char zc_name[MAXPATHLEN]; + char zc_name[MAXPATHLEN]; /* name of pool or dataset */ + uint64_t zc_nvlist_src; /* really (char *) */ + uint64_t zc_nvlist_src_size; + uint64_t zc_nvlist_dst; /* really (char *) */ + uint64_t zc_nvlist_dst_size; + boolean_t zc_nvlist_dst_filled; /* put an nvlist in dst? */ + int zc_pad2; + + /* + * The following members are for legacy ioctls which haven't been + * converted to the new method. + */ + uint64_t zc_history; /* really (char *) */ char zc_value[MAXPATHLEN * 2]; char zc_string[MAXNAMELEN]; char zc_top_ds[MAXPATHLEN]; uint64_t zc_guid; uint64_t zc_nvlist_conf; /* really (char *) */ uint64_t zc_nvlist_conf_size; - uint64_t zc_nvlist_src; /* really (char *) */ - uint64_t zc_nvlist_src_size; - uint64_t zc_nvlist_dst; /* really (char *) */ - uint64_t zc_nvlist_dst_size; uint64_t zc_cookie; uint64_t zc_objset_type; uint64_t zc_perm_action; - uint64_t zc_history; /* really (char *) */ - uint64_t zc_history_len; + uint64_t zc_history_len; uint64_t zc_history_offset; uint64_t zc_obj; uint64_t zc_iflags; /* internal to zfs(7fs) */ |