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59 lines
1.9 KiB
59 lines
1.9 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef _LINUX_FILEATTR_H |
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#define _LINUX_FILEATTR_H |
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/* Flags shared betwen flags/xflags */ |
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#define FS_COMMON_FL \ |
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(FS_SYNC_FL | FS_IMMUTABLE_FL | FS_APPEND_FL | \ |
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FS_NODUMP_FL | FS_NOATIME_FL | FS_DAX_FL | \ |
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FS_PROJINHERIT_FL) |
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#define FS_XFLAG_COMMON \ |
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(FS_XFLAG_SYNC | FS_XFLAG_IMMUTABLE | FS_XFLAG_APPEND | \ |
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FS_XFLAG_NODUMP | FS_XFLAG_NOATIME | FS_XFLAG_DAX | \ |
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FS_XFLAG_PROJINHERIT) |
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/* |
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* Merged interface for miscellaneous file attributes. 'flags' originates from |
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* ext* and 'fsx_flags' from xfs. There's some overlap between the two, which |
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* is handled by the VFS helpers, so filesystems are free to implement just one |
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* or both of these sub-interfaces. |
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*/ |
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struct fileattr { |
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u32 flags; /* flags (FS_IOC_GETFLAGS/FS_IOC_SETFLAGS) */ |
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/* struct fsxattr: */ |
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u32 fsx_xflags; /* xflags field value (get/set) */ |
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u32 fsx_extsize; /* extsize field value (get/set)*/ |
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u32 fsx_nextents; /* nextents field value (get) */ |
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u32 fsx_projid; /* project identifier (get/set) */ |
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u32 fsx_cowextsize; /* CoW extsize field value (get/set)*/ |
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/* selectors: */ |
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bool flags_valid:1; |
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bool fsx_valid:1; |
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}; |
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int copy_fsxattr_to_user(const struct fileattr *fa, struct fsxattr __user *ufa); |
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void fileattr_fill_xflags(struct fileattr *fa, u32 xflags); |
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void fileattr_fill_flags(struct fileattr *fa, u32 flags); |
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/** |
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* fileattr_has_fsx - check for extended flags/attributes |
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* @fa: fileattr pointer |
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* |
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* Return: true if any attributes are present that are not represented in |
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* ->flags. |
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*/ |
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static inline bool fileattr_has_fsx(const struct fileattr *fa) |
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{ |
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return fa->fsx_valid && |
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((fa->fsx_xflags & ~FS_XFLAG_COMMON) || fa->fsx_extsize != 0 || |
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fa->fsx_projid != 0 || fa->fsx_cowextsize != 0); |
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} |
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int vfs_fileattr_get(struct dentry *dentry, struct fileattr *fa); |
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int vfs_fileattr_set(struct user_namespace *mnt_userns, struct dentry *dentry, |
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struct fileattr *fa); |
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#endif /* _LINUX_FILEATTR_H */
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