mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-27 03:10:12 +00:00
![Linus Torvalds](/assets/img/avatar_default.png)
In this round, we introduced casefolding support in f2fs, and fixed various bugs in individual features such as IO alignment, checkpoint=disable, quota, and swapfile. Enhancement: - support casefolding w/ enhancement in ext4 - support fiemap for directory - support FS_IO_GET|SET_FSLABEL Bug fix: - fix IO stuck during checkpoint=disable - avoid infinite GC loop - fix panic/overflow related to IO alignment feature - fix livelock in swap file - fix discard command leak - disallow dio for atomic_write -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEE00UqedjCtOrGVvQiQBSofoJIUNIFAl2FL1wACgkQQBSofoJI UNIRdg/+M6QNiAazIbqzPXyUUkyZQYR5YKhu2abd49o/g38xjTq1afH0PZpQyDrA 9RncR4xsW8F241vPLVoCSanfaa+MxN6xHi3TrD8zYtZWxOcPF6v1ETHeUXGTHuJ2 gqlk+mm+CnY02M6rxW7XwixuXwttT3bF9+cf1YBWRpNoVrR+SjNqgeJS7FmJwXKd nGKb+94OxuygL1NUop+LDUo3qRQjc0Sxv/7qj/K4lhqgTjhAxMYT2KvUP/1MZ7U0 Kh9WIayDXnpoioxMPnt4VEb+JgXfLLFELvQzNjwulk15GIweuJzwVYCBXcRoX0cK eRBRmRy/kRp/e0R1gvl3kYrXQC2AC5QTlBVH/0ESwnaukFiUBKB509vH4aqE/vpB Krldjfg+uMHkc7XiNBf1boDp713vJ76iRKUDWoVb6H/sPbdJ+jtrnUNeBP8CVpWh u31SY1MppnmKhhsoCHQRbhbXO/Z29imBQgF9Tm3IFWImyLY3IU40vFj2fR15gJkL X3x/HWxQynSqyqEOwAZrvhCRTvBAIGIVy5292Di1RkqIoh8saxcqiaywgLz1+eVE 0DCOoh8R6sSbfN/EEh+yZqTxmjo0VGVTw30XVI6QEo4cY5Vfc9u6dN6SRWVRvbjb kPb3dKcMrttgbn3fcXU8Jbw1AOor9N6afHaqs0swQJyci2RwJyc= =oonf -----END PGP SIGNATURE----- Merge tag 'f2fs-for-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs Pull f2fs updates from Jaegeuk Kim: "In this round, we introduced casefolding support in f2fs, and fixed various bugs in individual features such as IO alignment, checkpoint=disable, quota, and swapfile. Enhancement: - support casefolding w/ enhancement in ext4 - support fiemap for directory - support FS_IO_GET|SET_FSLABEL Bug fix: - fix IO stuck during checkpoint=disable - avoid infinite GC loop - fix panic/overflow related to IO alignment feature - fix livelock in swap file - fix discard command leak - disallow dio for atomic_write" * tag 'f2fs-for-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (51 commits) f2fs: add a condition to detect overflow in f2fs_ioc_gc_range() f2fs: fix to add missing F2FS_IO_ALIGNED() condition f2fs: fix to fallback to buffered IO in IO aligned mode f2fs: fix to handle error path correctly in f2fs_map_blocks f2fs: fix extent corrupotion during directIO in LFS mode f2fs: check all the data segments against all node ones f2fs: Add a small clarification to CONFIG_FS_F2FS_FS_SECURITY f2fs: fix inode rwsem regression f2fs: fix to avoid accessing uninitialized field of inode page in is_alive() f2fs: avoid infinite GC loop due to stale atomic files f2fs: Fix indefinite loop in f2fs_gc() f2fs: convert inline_data in prior to i_size_write f2fs: fix error path of f2fs_convert_inline_page() f2fs: add missing documents of reserve_root/resuid/resgid f2fs: fix flushing node pages when checkpoint is disabled f2fs: enhance f2fs_is_checkpoint_ready()'s readability f2fs: clean up __bio_alloc()'s parameter f2fs: fix wrong error injection path in inc_valid_block_count() f2fs: fix to writeout dirty inode during node flush f2fs: optimize case-insensitive lookups ...
306 lines
12 KiB
C
306 lines
12 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
|
|
#ifndef _UAPI_LINUX_FS_H
|
|
#define _UAPI_LINUX_FS_H
|
|
|
|
/*
|
|
* 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>
|
|
#include <linux/ioctl.h>
|
|
#include <linux/types.h>
|
|
#ifndef __KERNEL__
|
|
#include <linux/fscrypt.h>
|
|
#endif
|
|
|
|
/* Use of MS_* flags within the kernel is restricted to core mount(2) code. */
|
|
#if !defined(__KERNEL__)
|
|
#include <linux/mount.h>
|
|
#endif
|
|
|
|
/*
|
|
* It's silly to have NR_OPEN bigger than NR_FILE, but you can change
|
|
* the file limit at runtime and only root can increase the per-process
|
|
* nr_file rlimit, so it's safe to set up a ridiculously high absolute
|
|
* upper limit on files-per-process.
|
|
*
|
|
* Some programs (notably those using select()) may have to be
|
|
* recompiled to take full advantage of the new limits..
|
|
*/
|
|
|
|
/* Fixed constants first: */
|
|
#undef NR_OPEN
|
|
#define INR_OPEN_CUR 1024 /* Initial setting for nfile rlimits */
|
|
#define INR_OPEN_MAX 4096 /* Hard limit for nfile rlimits */
|
|
|
|
#define BLOCK_SIZE_BITS 10
|
|
#define BLOCK_SIZE (1<<BLOCK_SIZE_BITS)
|
|
|
|
#define SEEK_SET 0 /* seek relative to beginning of file */
|
|
#define SEEK_CUR 1 /* seek relative to current file position */
|
|
#define SEEK_END 2 /* seek relative to end of file */
|
|
#define SEEK_DATA 3 /* seek to the next data */
|
|
#define SEEK_HOLE 4 /* seek to the next hole */
|
|
#define SEEK_MAX SEEK_HOLE
|
|
|
|
#define RENAME_NOREPLACE (1 << 0) /* Don't overwrite target */
|
|
#define RENAME_EXCHANGE (1 << 1) /* Exchange source and dest */
|
|
#define RENAME_WHITEOUT (1 << 2) /* Whiteout source */
|
|
|
|
struct file_clone_range {
|
|
__s64 src_fd;
|
|
__u64 src_offset;
|
|
__u64 src_length;
|
|
__u64 dest_offset;
|
|
};
|
|
|
|
struct fstrim_range {
|
|
__u64 start;
|
|
__u64 len;
|
|
__u64 minlen;
|
|
};
|
|
|
|
/* extent-same (dedupe) ioctls; these MUST match the btrfs ioctl definitions */
|
|
#define FILE_DEDUPE_RANGE_SAME 0
|
|
#define FILE_DEDUPE_RANGE_DIFFERS 1
|
|
|
|
/* from struct btrfs_ioctl_file_extent_same_info */
|
|
struct file_dedupe_range_info {
|
|
__s64 dest_fd; /* in - destination file */
|
|
__u64 dest_offset; /* in - start of extent in destination */
|
|
__u64 bytes_deduped; /* out - total # of bytes we were able
|
|
* to dedupe from this file. */
|
|
/* status of this dedupe operation:
|
|
* < 0 for error
|
|
* == FILE_DEDUPE_RANGE_SAME if dedupe succeeds
|
|
* == FILE_DEDUPE_RANGE_DIFFERS if data differs
|
|
*/
|
|
__s32 status; /* out - see above description */
|
|
__u32 reserved; /* must be zero */
|
|
};
|
|
|
|
/* from struct btrfs_ioctl_file_extent_same_args */
|
|
struct file_dedupe_range {
|
|
__u64 src_offset; /* in - start of extent in source */
|
|
__u64 src_length; /* in - length of extent */
|
|
__u16 dest_count; /* in - total elements in info array */
|
|
__u16 reserved1; /* must be zero */
|
|
__u32 reserved2; /* must be zero */
|
|
struct file_dedupe_range_info info[0];
|
|
};
|
|
|
|
/* And dynamically-tunable limits and defaults: */
|
|
struct files_stat_struct {
|
|
unsigned long nr_files; /* read only */
|
|
unsigned long nr_free_files; /* read only */
|
|
unsigned long max_files; /* tunable */
|
|
};
|
|
|
|
struct inodes_stat_t {
|
|
long nr_inodes;
|
|
long nr_unused;
|
|
long dummy[5]; /* padding for sysctl ABI compatibility */
|
|
};
|
|
|
|
|
|
#define NR_FILE 8192 /* this can well be larger on a larger system */
|
|
|
|
/*
|
|
* 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) */
|
|
__u32 fsx_cowextsize; /* CoW extsize field value (get/set)*/
|
|
unsigned char fsx_pad[8];
|
|
};
|
|
|
|
/*
|
|
* 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_COWEXTSIZE 0x00010000 /* CoW extent size allocator hint */
|
|
#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. */
|
|
|
|
#define BLKROSET _IO(0x12,93) /* set device read-only (0 = read-write) */
|
|
#define BLKROGET _IO(0x12,94) /* get read-only status (0 = read_write) */
|
|
#define BLKRRPART _IO(0x12,95) /* re-read partition table */
|
|
#define BLKGETSIZE _IO(0x12,96) /* return device size /512 (long *arg) */
|
|
#define BLKFLSBUF _IO(0x12,97) /* flush buffer cache */
|
|
#define BLKRASET _IO(0x12,98) /* set read ahead for block device */
|
|
#define BLKRAGET _IO(0x12,99) /* get current read ahead setting */
|
|
#define BLKFRASET _IO(0x12,100)/* set filesystem (mm/filemap.c) read-ahead */
|
|
#define BLKFRAGET _IO(0x12,101)/* get filesystem (mm/filemap.c) read-ahead */
|
|
#define BLKSECTSET _IO(0x12,102)/* set max sectors per request (ll_rw_blk.c) */
|
|
#define BLKSECTGET _IO(0x12,103)/* get max sectors per request (ll_rw_blk.c) */
|
|
#define BLKSSZGET _IO(0x12,104)/* get block device sector size */
|
|
#if 0
|
|
#define BLKPG _IO(0x12,105)/* See blkpg.h */
|
|
|
|
/* Some people are morons. Do not use sizeof! */
|
|
|
|
#define BLKELVGET _IOR(0x12,106,size_t)/* elevator get */
|
|
#define BLKELVSET _IOW(0x12,107,size_t)/* elevator set */
|
|
/* This was here just to show that the number is taken -
|
|
probably all these _IO(0x12,*) ioctls should be moved to blkpg.h. */
|
|
#endif
|
|
/* A jump here: 108-111 have been used for various private purposes. */
|
|
#define BLKBSZGET _IOR(0x12,112,size_t)
|
|
#define BLKBSZSET _IOW(0x12,113,size_t)
|
|
#define BLKGETSIZE64 _IOR(0x12,114,size_t) /* return device size in bytes (u64 *arg) */
|
|
#define BLKTRACESETUP _IOWR(0x12,115,struct blk_user_trace_setup)
|
|
#define BLKTRACESTART _IO(0x12,116)
|
|
#define BLKTRACESTOP _IO(0x12,117)
|
|
#define BLKTRACETEARDOWN _IO(0x12,118)
|
|
#define BLKDISCARD _IO(0x12,119)
|
|
#define BLKIOMIN _IO(0x12,120)
|
|
#define BLKIOOPT _IO(0x12,121)
|
|
#define BLKALIGNOFF _IO(0x12,122)
|
|
#define BLKPBSZGET _IO(0x12,123)
|
|
#define BLKDISCARDZEROES _IO(0x12,124)
|
|
#define BLKSECDISCARD _IO(0x12,125)
|
|
#define BLKROTATIONAL _IO(0x12,126)
|
|
#define BLKZEROOUT _IO(0x12,127)
|
|
/*
|
|
* A jump here: 130-131 are reserved for zoned block devices
|
|
* (see uapi/linux/blkzoned.h)
|
|
*/
|
|
|
|
#define BMAP_IOCTL 1 /* obsolete - kept for compatibility */
|
|
#define FIBMAP _IO(0x00,1) /* bmap access */
|
|
#define FIGETBSZ _IO(0x00,2) /* get the block size used for bmap */
|
|
#define FIFREEZE _IOWR('X', 119, int) /* Freeze */
|
|
#define FITHAW _IOWR('X', 120, int) /* Thaw */
|
|
#define FITRIM _IOWR('X', 121, struct fstrim_range) /* Trim */
|
|
#define FICLONE _IOW(0x94, 9, int)
|
|
#define FICLONERANGE _IOW(0x94, 13, struct file_clone_range)
|
|
#define FIDEDUPERANGE _IOWR(0x94, 54, struct file_dedupe_range)
|
|
|
|
#define FSLABEL_MAX 256 /* Max chars for the interface; each fs may differ */
|
|
|
|
#define FS_IOC_GETFLAGS _IOR('f', 1, long)
|
|
#define FS_IOC_SETFLAGS _IOW('f', 2, long)
|
|
#define FS_IOC_GETVERSION _IOR('v', 1, long)
|
|
#define FS_IOC_SETVERSION _IOW('v', 2, long)
|
|
#define FS_IOC_FIEMAP _IOWR('f', 11, struct fiemap)
|
|
#define FS_IOC32_GETFLAGS _IOR('f', 1, int)
|
|
#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)
|
|
#define FS_IOC_GETFSLABEL _IOR(0x94, 49, char[FSLABEL_MAX])
|
|
#define FS_IOC_SETFSLABEL _IOW(0x94, 50, char[FSLABEL_MAX])
|
|
|
|
/*
|
|
* 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 */
|
|
#define FS_COMPR_FL 0x00000004 /* Compress file */
|
|
#define FS_SYNC_FL 0x00000008 /* Synchronous updates */
|
|
#define FS_IMMUTABLE_FL 0x00000010 /* Immutable file */
|
|
#define FS_APPEND_FL 0x00000020 /* writes to file may only append */
|
|
#define FS_NODUMP_FL 0x00000040 /* do not dump file */
|
|
#define FS_NOATIME_FL 0x00000080 /* do not update atime */
|
|
/* Reserved for compression usage... */
|
|
#define FS_DIRTY_FL 0x00000100
|
|
#define FS_COMPRBLK_FL 0x00000200 /* One or more compressed clusters */
|
|
#define FS_NOCOMP_FL 0x00000400 /* Don't compress */
|
|
/* 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 */
|
|
#define FS_JOURNAL_DATA_FL 0x00004000 /* Reserved for ext3 */
|
|
#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_VERITY_FL 0x00100000 /* Verity protected inode */
|
|
#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_CASEFOLD_FL 0x40000000 /* Folder is case insensitive */
|
|
#define FS_RESERVED_FL 0x80000000 /* reserved for ext2 lib */
|
|
|
|
#define FS_FL_USER_VISIBLE 0x0003DFFF /* User visible flags */
|
|
#define FS_FL_USER_MODIFIABLE 0x000380FF /* User modifiable flags */
|
|
|
|
|
|
#define SYNC_FILE_RANGE_WAIT_BEFORE 1
|
|
#define SYNC_FILE_RANGE_WRITE 2
|
|
#define SYNC_FILE_RANGE_WAIT_AFTER 4
|
|
#define SYNC_FILE_RANGE_WRITE_AND_WAIT (SYNC_FILE_RANGE_WRITE | \
|
|
SYNC_FILE_RANGE_WAIT_BEFORE | \
|
|
SYNC_FILE_RANGE_WAIT_AFTER)
|
|
|
|
/*
|
|
* Flags for preadv2/pwritev2:
|
|
*/
|
|
|
|
typedef int __bitwise __kernel_rwf_t;
|
|
|
|
/* high priority request, poll if possible */
|
|
#define RWF_HIPRI ((__force __kernel_rwf_t)0x00000001)
|
|
|
|
/* per-IO O_DSYNC */
|
|
#define RWF_DSYNC ((__force __kernel_rwf_t)0x00000002)
|
|
|
|
/* per-IO O_SYNC */
|
|
#define RWF_SYNC ((__force __kernel_rwf_t)0x00000004)
|
|
|
|
/* per-IO, return -EAGAIN if operation would block */
|
|
#define RWF_NOWAIT ((__force __kernel_rwf_t)0x00000008)
|
|
|
|
/* per-IO O_APPEND */
|
|
#define RWF_APPEND ((__force __kernel_rwf_t)0x00000010)
|
|
|
|
/* mask of flags supported by the kernel */
|
|
#define RWF_SUPPORTED (RWF_HIPRI | RWF_DSYNC | RWF_SYNC | RWF_NOWAIT |\
|
|
RWF_APPEND)
|
|
|
|
#endif /* _UAPI_LINUX_FS_H */
|