1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _BCACHEFS_FS_IOCTL_H
 3#define _BCACHEFS_FS_IOCTL_H
 4
 5/* Inode flags: */
 6
 7/* bcachefs inode flags -> vfs inode flags: */
 8static const __maybe_unused unsigned bch_flags_to_vfs[] = {
 9	[__BCH_INODE_sync]	= S_SYNC,
10	[__BCH_INODE_immutable]	= S_IMMUTABLE,
11	[__BCH_INODE_append]	= S_APPEND,
12	[__BCH_INODE_noatime]	= S_NOATIME,
13};
14
15/* bcachefs inode flags -> FS_IOC_GETFLAGS: */
16static const __maybe_unused unsigned bch_flags_to_uflags[] = {
17	[__BCH_INODE_sync]	= FS_SYNC_FL,
18	[__BCH_INODE_immutable]	= FS_IMMUTABLE_FL,
19	[__BCH_INODE_append]	= FS_APPEND_FL,
20	[__BCH_INODE_nodump]	= FS_NODUMP_FL,
21	[__BCH_INODE_noatime]	= FS_NOATIME_FL,
22};
23
24/* bcachefs inode flags -> FS_IOC_FSGETXATTR: */
25static const __maybe_unused unsigned bch_flags_to_xflags[] = {
26	[__BCH_INODE_sync]	= FS_XFLAG_SYNC,
27	[__BCH_INODE_immutable]	= FS_XFLAG_IMMUTABLE,
28	[__BCH_INODE_append]	= FS_XFLAG_APPEND,
29	[__BCH_INODE_nodump]	= FS_XFLAG_NODUMP,
30	[__BCH_INODE_noatime]	= FS_XFLAG_NOATIME,
31	//[__BCH_INODE_PROJINHERIT] = FS_XFLAG_PROJINHERIT;
32};
33
34#define set_flags(_map, _in, _out)					\
35do {									\
36	unsigned _i;							\
37									\
38	for (_i = 0; _i < ARRAY_SIZE(_map); _i++)			\
39		if ((_in) & (1 << _i))					\
40			(_out) |= _map[_i];				\
41		else							\
42			(_out) &= ~_map[_i];				\
43} while (0)
44
45#define map_flags(_map, _in)						\
46({									\
47	unsigned _out = 0;						\
48									\
49	set_flags(_map, _in, _out);					\
50	_out;								\
51})
52
53#define map_flags_rev(_map, _in)					\
54({									\
55	unsigned _i, _out = 0;						\
56									\
57	for (_i = 0; _i < ARRAY_SIZE(_map); _i++)			\
58		if ((_in) & _map[_i]) {					\
59			(_out) |= 1 << _i;				\
60			(_in) &= ~_map[_i];				\
61		}							\
62	(_out);								\
63})
64
65#define map_defined(_map)						\
66({									\
67	unsigned _in = ~0;						\
68									\
69	map_flags_rev(_map, _in);					\
70})
71
72/* Set VFS inode flags from bcachefs inode: */
73static inline void bch2_inode_flags_to_vfs(struct bch_inode_info *inode)
74{
75	set_flags(bch_flags_to_vfs, inode->ei_inode.bi_flags, inode->v.i_flags);
76}
77
78long bch2_fs_file_ioctl(struct file *, unsigned, unsigned long);
79long bch2_compat_fs_ioctl(struct file *, unsigned, unsigned long);
80
81#endif /* _BCACHEFS_FS_IOCTL_H */