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 /* Read-only inode flags */ 18 #define FS_XFLAG_RDONLY_MASK \ 19 (FS_XFLAG_PREALLOC | FS_XFLAG_HASATTR) 20 21 /* Flags to indicate valid value of fsx_ fields */ 22 #define FS_XFLAG_VALUES_MASK \ 23 (FS_XFLAG_EXTSIZE | FS_XFLAG_COWEXTSIZE) 24 25 /* Flags for directories */ 26 #define FS_XFLAG_DIRONLY_MASK \ 27 (FS_XFLAG_RTINHERIT | FS_XFLAG_NOSYMLINKS | FS_XFLAG_EXTSZINHERIT) 28 29 /* Misc settable flags */ 30 #define FS_XFLAG_MISC_MASK \ 31 (FS_XFLAG_REALTIME | FS_XFLAG_NODEFRAG | FS_XFLAG_FILESTREAM) 32 33 #define FS_XFLAGS_MASK \ 34 (FS_XFLAG_COMMON | FS_XFLAG_RDONLY_MASK | FS_XFLAG_VALUES_MASK | \ 35 FS_XFLAG_DIRONLY_MASK | FS_XFLAG_MISC_MASK) 36 37 /* 38 * Merged interface for miscellaneous file attributes. 'flags' originates from 39 * ext* and 'fsx_flags' from xfs. There's some overlap between the two, which 40 * is handled by the VFS helpers, so filesystems are free to implement just one 41 * or both of these sub-interfaces. 42 */ 43 struct file_kattr { 44 u32 flags; /* flags (FS_IOC_GETFLAGS/FS_IOC_SETFLAGS) */ 45 /* struct fsxattr: */ 46 u32 fsx_xflags; /* xflags field value (get/set) */ 47 u32 fsx_extsize; /* extsize field value (get/set)*/ 48 u32 fsx_nextents; /* nextents field value (get) */ 49 u32 fsx_projid; /* project identifier (get/set) */ 50 u32 fsx_cowextsize; /* CoW extsize field value (get/set)*/ 51 /* selectors: */ 52 bool flags_valid:1; 53 bool fsx_valid:1; 54 }; 55 56 int copy_fsxattr_to_user(const struct file_kattr *fa, struct fsxattr __user *ufa); 57 58 void fileattr_fill_xflags(struct file_kattr *fa, u32 xflags); 59 void fileattr_fill_flags(struct file_kattr *fa, u32 flags); 60 61 /** 62 * fileattr_has_fsx - check for extended flags/attributes 63 * @fa: fileattr pointer 64 * 65 * Return: true if any attributes are present that are not represented in 66 * ->flags. 67 */ 68 static inline bool fileattr_has_fsx(const struct file_kattr *fa) 69 { 70 return fa->fsx_valid && 71 ((fa->fsx_xflags & ~FS_XFLAG_COMMON) || fa->fsx_extsize != 0 || 72 fa->fsx_projid != 0 || fa->fsx_cowextsize != 0); 73 } 74 75 int vfs_fileattr_get(struct dentry *dentry, struct file_kattr *fa); 76 int vfs_fileattr_set(struct mnt_idmap *idmap, struct dentry *dentry, 77 struct file_kattr *fa); 78 int ioctl_getflags(struct file *file, unsigned int __user *argp); 79 int ioctl_setflags(struct file *file, unsigned int __user *argp); 80 int ioctl_fsgetxattr(struct file *file, void __user *argp); 81 int ioctl_fssetxattr(struct file *file, void __user *argp); 82 83 #endif /* _LINUX_FILEATTR_H */ 84