1 // SPDX-License-Identifier: CDDL-1.0
2 /*
3 * CDDL HEADER START
4 *
5 * The contents of this file are subject to the terms of the
6 * Common Development and Distribution License (the "License").
7 * You may not use this file except in compliance with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or https://opensource.org/licenses/CDDL-1.0.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright (c) 2017, Intel Corporation. All rights reserved.
24 */
25
26 #ifndef _SYS_ZFS_PROJECT_H
27 #define _SYS_ZFS_PROJECT_H
28
29 #ifndef _KERNEL
30 #ifndef _SYS_MOUNT_H
31 /* XXX: some hack to avoid include sys/mount.h */
32 #define _SYS_MOUNT_H
33 #endif
34 #endif
35
36 #include <sys/vfs.h>
37
38 #ifdef FS_IOC_FSGETXATTR
39 typedef struct fsxattr zfsxattr_t;
40
41 #define ZFS_IOC_FSGETXATTR FS_IOC_FSGETXATTR
42 #define ZFS_IOC_FSSETXATTR FS_IOC_FSSETXATTR
43 #else
44 /* Non-Linux OS */
45 #define FS_PROJINHERIT_FL 0x20000000
46 #define FS_XFLAG_PROJINHERIT FS_PROJINHERIT_FL
47
48 struct zfsxattr {
49 uint32_t fsx_xflags; /* xflags field value (get/set) */
50 uint32_t fsx_extsize; /* extsize field value (get/set) */
51 uint32_t fsx_nextents; /* nextents field value (get) */
52 uint32_t fsx_projid; /* project identifier (get/set) */
53 uint32_t fsx_cowextsize;
54 unsigned char fsx_pad[8];
55 };
56 typedef struct zfsxattr zfsxattr_t;
57
58 #define ZFS_IOC_FSGETXATTR _IOR('X', 31, zfsxattr_t)
59 #define ZFS_IOC_FSSETXATTR _IOW('X', 32, zfsxattr_t)
60 #endif
61
62 #define ZFS_DEFAULT_PROJID (0ULL)
63 /*
64 * It is NOT ondisk project ID value. Just means either the object has
65 * no project ID or the operation does not touch project ID attribute.
66 */
67 #define ZFS_INVALID_PROJID (-1ULL)
68
69 static inline boolean_t
zpl_is_valid_projid(uint32_t projid)70 zpl_is_valid_projid(uint32_t projid)
71 {
72 /*
73 * zfsxattr::fsx_projid is 32-bits, when convert to uint64_t,
74 * the higher 32-bits will be set as zero, so cannot directly
75 * compare with ZFS_INVALID_PROJID (-1ULL)
76 */
77 if ((uint32_t)ZFS_INVALID_PROJID == projid)
78 return (B_FALSE);
79 return (B_TRUE);
80 }
81
82 #endif /* _SYS_ZFS_PROJECT_H */
83