diff options
Diffstat (limited to 'include/uapi/linux/fs.h')
| -rw-r--r-- | include/uapi/linux/fs.h | 64 |
1 files changed, 60 insertions, 4 deletions
diff --git a/include/uapi/linux/fs.h b/include/uapi/linux/fs.h index b8a5b3b86ad6..41e0433b4a83 100644 --- a/include/uapi/linux/fs.h +++ b/include/uapi/linux/fs.h @@ -2,8 +2,11 @@ #define _UAPI_LINUX_FS_H /* - * This file has definitions for some important file table - * structures etc. + * This file has definitions for some important file table structures + * and constants and structures used by various generic file system + * ioctl's. Please do not make any changes in this file before + * sending patches for review to linux-fsdevel@vger.kernel.org and + * linux-api@vger.kernel.org. */ #include <linux/limits.h> @@ -146,6 +149,37 @@ struct inodes_stat_t { #define MS_MGC_VAL 0xC0ED0000 #define MS_MGC_MSK 0xffff0000 +/* + * Structure for FS_IOC_FSGETXATTR[A] and FS_IOC_FSSETXATTR. + */ +struct fsxattr { + __u32 fsx_xflags; /* xflags field value (get/set) */ + __u32 fsx_extsize; /* extsize field value (get/set)*/ + __u32 fsx_nextents; /* nextents field value (get) */ + __u32 fsx_projid; /* project identifier (get/set) */ + unsigned char fsx_pad[12]; +}; + +/* + * Flags for the fsx_xflags field + */ +#define FS_XFLAG_REALTIME 0x00000001 /* data in realtime volume */ +#define FS_XFLAG_PREALLOC 0x00000002 /* preallocated file extents */ +#define FS_XFLAG_IMMUTABLE 0x00000008 /* file cannot be modified */ +#define FS_XFLAG_APPEND 0x00000010 /* all writes append */ +#define FS_XFLAG_SYNC 0x00000020 /* all writes synchronous */ +#define FS_XFLAG_NOATIME 0x00000040 /* do not update access time */ +#define FS_XFLAG_NODUMP 0x00000080 /* do not include in backups */ +#define FS_XFLAG_RTINHERIT 0x00000100 /* create with rt bit set */ +#define FS_XFLAG_PROJINHERIT 0x00000200 /* create with parents projid */ +#define FS_XFLAG_NOSYMLINKS 0x00000400 /* disallow symlink creation */ +#define FS_XFLAG_EXTSIZE 0x00000800 /* extent size allocator hint */ +#define FS_XFLAG_EXTSZINHERIT 0x00001000 /* inherit inode extent size */ +#define FS_XFLAG_NODEFRAG 0x00002000 /* do not defragment */ +#define FS_XFLAG_FILESTREAM 0x00004000 /* use filestream allocator */ +#define FS_XFLAG_DAX 0x00008000 /* use DAX for IO */ +#define FS_XFLAG_HASATTR 0x80000000 /* no DIFLAG for this */ + /* the read-only stuff doesn't really belong here, but any other place is probably as bad and I don't want to create yet another include file. */ @@ -210,9 +244,28 @@ struct inodes_stat_t { #define FS_IOC32_SETFLAGS _IOW('f', 2, int) #define FS_IOC32_GETVERSION _IOR('v', 1, int) #define FS_IOC32_SETVERSION _IOW('v', 2, int) +#define FS_IOC_FSGETXATTR _IOR ('X', 31, struct fsxattr) +#define FS_IOC_FSSETXATTR _IOW ('X', 32, struct fsxattr) /* * Inode flags (FS_IOC_GETFLAGS / FS_IOC_SETFLAGS) + * + * Note: for historical reasons, these flags were originally used and + * defined for use by ext2/ext3, and then other file systems started + * using these flags so they wouldn't need to write their own version + * of chattr/lsattr (which was shipped as part of e2fsprogs). You + * should think twice before trying to use these flags in new + * contexts, or trying to assign these flags, since they are used both + * as the UAPI and the on-disk encoding for ext2/3/4. Also, we are + * almost out of 32-bit flags. :-) + * + * We have recently hoisted FS_IOC_FSGETXATTR / FS_IOC_FSSETXATTR from + * XFS to the generic FS level interface. This uses a structure that + * has padding and hence has more room to grow, so it may be more + * appropriate for many new use cases. + * + * Please do not change these flags or interfaces before checking with + * linux-fsdevel@vger.kernel.org and linux-api@vger.kernel.org. */ #define FS_SECRM_FL 0x00000001 /* Secure deletion */ #define FS_UNRM_FL 0x00000002 /* Undelete */ @@ -226,8 +279,8 @@ struct inodes_stat_t { #define FS_DIRTY_FL 0x00000100 #define FS_COMPRBLK_FL 0x00000200 /* One or more compressed clusters */ #define FS_NOCOMP_FL 0x00000400 /* Don't compress */ -#define FS_ECOMPR_FL 0x00000800 /* Compression error */ /* End compression flags --- maybe not all used */ +#define FS_ENCRYPT_FL 0x00000800 /* Encrypted file */ #define FS_BTREE_FL 0x00001000 /* btree format dir */ #define FS_INDEX_FL 0x00001000 /* hash-indexed directory */ #define FS_IMAGIC_FL 0x00002000 /* AFS directory */ @@ -235,9 +288,12 @@ struct inodes_stat_t { #define FS_NOTAIL_FL 0x00008000 /* file tail should not be merged */ #define FS_DIRSYNC_FL 0x00010000 /* dirsync behaviour (directories only) */ #define FS_TOPDIR_FL 0x00020000 /* Top of directory hierarchies*/ +#define FS_HUGE_FILE_FL 0x00040000 /* Reserved for ext4 */ #define FS_EXTENT_FL 0x00080000 /* Extents */ -#define FS_DIRECTIO_FL 0x00100000 /* Use direct i/o */ +#define FS_EA_INODE_FL 0x00200000 /* Inode used for large EA */ +#define FS_EOFBLOCKS_FL 0x00400000 /* Reserved for ext4 */ #define FS_NOCOW_FL 0x00800000 /* Do not cow file */ +#define FS_INLINE_DATA_FL 0x10000000 /* Reserved for ext4 */ #define FS_PROJINHERIT_FL 0x20000000 /* Create with parents projid */ #define FS_RESERVED_FL 0x80000000 /* reserved for ext2 lib */ |