1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | |
3 | #ifndef _LINUX_FILEATTR_H |
4 | #define _LINUX_FILEATTR_H |
5 | |
6 | /* Flags shared betwen flags/xflags */ |
7 | #define FS_COMMON_FL \ |
8 | (FS_SYNC_FL | FS_IMMUTABLE_FL | FS_APPEND_FL | \ |
9 | FS_NODUMP_FL | FS_NOATIME_FL | FS_DAX_FL | \ |
10 | FS_PROJINHERIT_FL) |
11 | |
12 | #define FS_XFLAG_COMMON \ |
13 | (FS_XFLAG_SYNC | FS_XFLAG_IMMUTABLE | FS_XFLAG_APPEND | \ |
14 | FS_XFLAG_NODUMP | FS_XFLAG_NOATIME | FS_XFLAG_DAX | \ |
15 | FS_XFLAG_PROJINHERIT) |
16 | |
17 | /* |
18 | * Merged interface for miscellaneous file attributes. 'flags' originates from |
19 | * ext* and 'fsx_flags' from xfs. There's some overlap between the two, which |
20 | * is handled by the VFS helpers, so filesystems are free to implement just one |
21 | * or both of these sub-interfaces. |
22 | */ |
23 | struct fileattr { |
24 | u32 flags; /* flags (FS_IOC_GETFLAGS/FS_IOC_SETFLAGS) */ |
25 | /* struct fsxattr: */ |
26 | u32 fsx_xflags; /* xflags field value (get/set) */ |
27 | u32 fsx_extsize; /* extsize field value (get/set)*/ |
28 | u32 fsx_nextents; /* nextents field value (get) */ |
29 | u32 fsx_projid; /* project identifier (get/set) */ |
30 | u32 fsx_cowextsize; /* CoW extsize field value (get/set)*/ |
31 | /* selectors: */ |
32 | bool flags_valid:1; |
33 | bool fsx_valid:1; |
34 | }; |
35 | |
36 | int copy_fsxattr_to_user(const struct fileattr *fa, struct fsxattr __user *ufa); |
37 | |
38 | void fileattr_fill_xflags(struct fileattr *fa, u32 xflags); |
39 | void fileattr_fill_flags(struct fileattr *fa, u32 flags); |
40 | |
41 | /** |
42 | * fileattr_has_fsx - check for extended flags/attributes |
43 | * @fa: fileattr pointer |
44 | * |
45 | * Return: true if any attributes are present that are not represented in |
46 | * ->flags. |
47 | */ |
48 | static inline bool fileattr_has_fsx(const struct fileattr *fa) |
49 | { |
50 | return fa->fsx_valid && |
51 | ((fa->fsx_xflags & ~FS_XFLAG_COMMON) || fa->fsx_extsize != 0 || |
52 | fa->fsx_projid != 0 || fa->fsx_cowextsize != 0); |
53 | } |
54 | |
55 | int vfs_fileattr_get(struct dentry *dentry, struct fileattr *fa); |
56 | int vfs_fileattr_set(struct mnt_idmap *idmap, struct dentry *dentry, |
57 | struct fileattr *fa); |
58 | |
59 | #endif /* _LINUX_FILEATTR_H */ |
60 | |