basic: introduce our own sys/mount.h implementation
To resolve conflict with sys/mount.h and linux/mount.h or linux/fs.h. The conflict between sys/mount.h and linux/mount.h is resolved in glibc-2.37 (774058d72942249f71d74e7f2b639f77184160a6), but our baseline is still glibc-2.31. Also, even with the version or newer, still sys/mount.h conflicts with linux/fs.h, which is included by linux/btrfs.h. This introduces our own implementation of sys/mount.h, that can be simultaneously included with linux/mount.h and linux/fs.h. This also imports linux/fs.h, linux/mount.h, and several other dependent headers. The introduced sys/mount.h header itself may not be enough simple, but by using the header, we can drop most of workarounds in other source files.
This commit is contained in:
Yu Watanabe
@@ -26,9 +26,7 @@ extern "C" {
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#include <linux/types.h>
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#include <linux/ioctl.h>
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#if WANT_LINUX_FS_H
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#include <linux/fs.h>
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#endif
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#define BTRFS_IOCTL_MAGIC 0x94
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#define BTRFS_VOL_NAME_MAX 255
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@@ -0,0 +1,564 @@
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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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#ifndef _LINUX_FS_H
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#define _LINUX_FS_H
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/*
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* This file has definitions for some important file table structures
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* and constants and structures used by various generic file system
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* ioctl's. Please do not make any changes in this file before
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* sending patches for review to linux-fsdevel@vger.kernel.org and
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* linux-api@vger.kernel.org.
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*/
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#include <linux/limits.h>
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#include <linux/ioctl.h>
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#include <linux/types.h>
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#include <linux/fscrypt.h>
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/* Use of MS_* flags within the kernel is restricted to core mount(2) code. */
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#include <linux/mount.h>
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/*
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* It's silly to have NR_OPEN bigger than NR_FILE, but you can change
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* the file limit at runtime and only root can increase the per-process
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* nr_file rlimit, so it's safe to set up a ridiculously high absolute
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* upper limit on files-per-process.
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*
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* Some programs (notably those using select()) may have to be
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* recompiled to take full advantage of the new limits..
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*/
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/* Fixed constants first: */
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#undef NR_OPEN
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#define INR_OPEN_CUR 1024 /* Initial setting for nfile rlimits */
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#define INR_OPEN_MAX 4096 /* Hard limit for nfile rlimits */
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#define BLOCK_SIZE_BITS 10
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#define BLOCK_SIZE (1<<BLOCK_SIZE_BITS)
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/* flags for integrity meta */
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#define IO_INTEGRITY_CHK_GUARD (1U << 0) /* enforce guard check */
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#define IO_INTEGRITY_CHK_REFTAG (1U << 1) /* enforce ref check */
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#define IO_INTEGRITY_CHK_APPTAG (1U << 2) /* enforce app check */
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#define IO_INTEGRITY_VALID_FLAGS (IO_INTEGRITY_CHK_GUARD | \
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IO_INTEGRITY_CHK_REFTAG | \
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IO_INTEGRITY_CHK_APPTAG)
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#define SEEK_SET 0 /* seek relative to beginning of file */
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#define SEEK_CUR 1 /* seek relative to current file position */
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#define SEEK_END 2 /* seek relative to end of file */
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#define SEEK_DATA 3 /* seek to the next data */
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#define SEEK_HOLE 4 /* seek to the next hole */
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#define SEEK_MAX SEEK_HOLE
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#define RENAME_NOREPLACE (1 << 0) /* Don't overwrite target */
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#define RENAME_EXCHANGE (1 << 1) /* Exchange source and dest */
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#define RENAME_WHITEOUT (1 << 2) /* Whiteout source */
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struct file_clone_range {
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__s64 src_fd;
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__u64 src_offset;
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__u64 src_length;
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__u64 dest_offset;
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};
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struct fstrim_range {
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__u64 start;
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__u64 len;
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__u64 minlen;
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};
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/*
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* We include a length field because some filesystems (vfat) have an identifier
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* that we do want to expose as a UUID, but doesn't have the standard length.
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*
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* We use a fixed size buffer beacuse this interface will, by fiat, never
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* support "UUIDs" longer than 16 bytes; we don't want to force all downstream
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* users to have to deal with that.
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*/
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struct fsuuid2 {
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__u8 len;
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__u8 uuid[16];
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};
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struct fs_sysfs_path {
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__u8 len;
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__u8 name[128];
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};
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/* extent-same (dedupe) ioctls; these MUST match the btrfs ioctl definitions */
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#define FILE_DEDUPE_RANGE_SAME 0
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#define FILE_DEDUPE_RANGE_DIFFERS 1
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/* from struct btrfs_ioctl_file_extent_same_info */
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struct file_dedupe_range_info {
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__s64 dest_fd; /* in - destination file */
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__u64 dest_offset; /* in - start of extent in destination */
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__u64 bytes_deduped; /* out - total # of bytes we were able
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* to dedupe from this file. */
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/* status of this dedupe operation:
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* < 0 for error
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* == FILE_DEDUPE_RANGE_SAME if dedupe succeeds
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* == FILE_DEDUPE_RANGE_DIFFERS if data differs
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*/
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__s32 status; /* out - see above description */
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__u32 reserved; /* must be zero */
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};
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/* from struct btrfs_ioctl_file_extent_same_args */
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struct file_dedupe_range {
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__u64 src_offset; /* in - start of extent in source */
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__u64 src_length; /* in - length of extent */
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__u16 dest_count; /* in - total elements in info array */
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__u16 reserved1; /* must be zero */
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__u32 reserved2; /* must be zero */
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struct file_dedupe_range_info info[];
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};
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/* And dynamically-tunable limits and defaults: */
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struct files_stat_struct {
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unsigned long nr_files; /* read only */
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unsigned long nr_free_files; /* read only */
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unsigned long max_files; /* tunable */
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};
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struct inodes_stat_t {
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long nr_inodes;
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long nr_unused;
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long dummy[5]; /* padding for sysctl ABI compatibility */
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};
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#define NR_FILE 8192 /* this can well be larger on a larger system */
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/*
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* Structure for FS_IOC_FSGETXATTR[A] and FS_IOC_FSSETXATTR.
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*/
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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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unsigned char fsx_pad[8];
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};
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/*
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* Flags for the fsx_xflags field
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*/
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#define FS_XFLAG_REALTIME 0x00000001 /* data in realtime volume */
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#define FS_XFLAG_PREALLOC 0x00000002 /* preallocated file extents */
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#define FS_XFLAG_IMMUTABLE 0x00000008 /* file cannot be modified */
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#define FS_XFLAG_APPEND 0x00000010 /* all writes append */
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#define FS_XFLAG_SYNC 0x00000020 /* all writes synchronous */
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#define FS_XFLAG_NOATIME 0x00000040 /* do not update access time */
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#define FS_XFLAG_NODUMP 0x00000080 /* do not include in backups */
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#define FS_XFLAG_RTINHERIT 0x00000100 /* create with rt bit set */
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#define FS_XFLAG_PROJINHERIT 0x00000200 /* create with parents projid */
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#define FS_XFLAG_NOSYMLINKS 0x00000400 /* disallow symlink creation */
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#define FS_XFLAG_EXTSIZE 0x00000800 /* extent size allocator hint */
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#define FS_XFLAG_EXTSZINHERIT 0x00001000 /* inherit inode extent size */
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#define FS_XFLAG_NODEFRAG 0x00002000 /* do not defragment */
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#define FS_XFLAG_FILESTREAM 0x00004000 /* use filestream allocator */
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#define FS_XFLAG_DAX 0x00008000 /* use DAX for IO */
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#define FS_XFLAG_COWEXTSIZE 0x00010000 /* CoW extent size allocator hint */
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#define FS_XFLAG_HASATTR 0x80000000 /* no DIFLAG for this */
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/* the read-only stuff doesn't really belong here, but any other place is
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probably as bad and I don't want to create yet another include file. */
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#define BLKROSET _IO(0x12,93) /* set device read-only (0 = read-write) */
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#define BLKROGET _IO(0x12,94) /* get read-only status (0 = read_write) */
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#define BLKRRPART _IO(0x12,95) /* re-read partition table */
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#define BLKGETSIZE _IO(0x12,96) /* return device size /512 (long *arg) */
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#define BLKFLSBUF _IO(0x12,97) /* flush buffer cache */
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#define BLKRASET _IO(0x12,98) /* set read ahead for block device */
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#define BLKRAGET _IO(0x12,99) /* get current read ahead setting */
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#define BLKFRASET _IO(0x12,100)/* set filesystem (mm/filemap.c) read-ahead */
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#define BLKFRAGET _IO(0x12,101)/* get filesystem (mm/filemap.c) read-ahead */
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#define BLKSECTSET _IO(0x12,102)/* set max sectors per request (ll_rw_blk.c) */
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#define BLKSECTGET _IO(0x12,103)/* get max sectors per request (ll_rw_blk.c) */
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#define BLKSSZGET _IO(0x12,104)/* get block device sector size */
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#if 0
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#define BLKPG _IO(0x12,105)/* See blkpg.h */
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/* Some people are morons. Do not use sizeof! */
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#define BLKELVGET _IOR(0x12,106,size_t)/* elevator get */
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#define BLKELVSET _IOW(0x12,107,size_t)/* elevator set */
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/* This was here just to show that the number is taken -
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probably all these _IO(0x12,*) ioctls should be moved to blkpg.h. */
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#endif
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/* A jump here: 108-111 have been used for various private purposes. */
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#define BLKBSZGET _IOR(0x12,112,size_t)
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#define BLKBSZSET _IOW(0x12,113,size_t)
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#define BLKGETSIZE64 _IOR(0x12,114,size_t) /* return device size in bytes (u64 *arg) */
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#define BLKTRACESETUP _IOWR(0x12,115,struct blk_user_trace_setup)
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#define BLKTRACESTART _IO(0x12,116)
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#define BLKTRACESTOP _IO(0x12,117)
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#define BLKTRACETEARDOWN _IO(0x12,118)
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#define BLKDISCARD _IO(0x12,119)
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#define BLKIOMIN _IO(0x12,120)
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#define BLKIOOPT _IO(0x12,121)
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#define BLKALIGNOFF _IO(0x12,122)
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#define BLKPBSZGET _IO(0x12,123)
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#define BLKDISCARDZEROES _IO(0x12,124)
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#define BLKSECDISCARD _IO(0x12,125)
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#define BLKROTATIONAL _IO(0x12,126)
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#define BLKZEROOUT _IO(0x12,127)
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#define BLKGETDISKSEQ _IOR(0x12,128,__u64)
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/*
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* A jump here: 130-136 are reserved for zoned block devices
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* (see uapi/linux/blkzoned.h)
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*/
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#define BMAP_IOCTL 1 /* obsolete - kept for compatibility */
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#define FIBMAP _IO(0x00,1) /* bmap access */
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#define FIGETBSZ _IO(0x00,2) /* get the block size used for bmap */
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#define FIFREEZE _IOWR('X', 119, int) /* Freeze */
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#define FITHAW _IOWR('X', 120, int) /* Thaw */
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#define FITRIM _IOWR('X', 121, struct fstrim_range) /* Trim */
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#define FICLONE _IOW(0x94, 9, int)
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#define FICLONERANGE _IOW(0x94, 13, struct file_clone_range)
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#define FIDEDUPERANGE _IOWR(0x94, 54, struct file_dedupe_range)
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#define FSLABEL_MAX 256 /* Max chars for the interface; each fs may differ */
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#define FS_IOC_GETFLAGS _IOR('f', 1, long)
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#define FS_IOC_SETFLAGS _IOW('f', 2, long)
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#define FS_IOC_GETVERSION _IOR('v', 1, long)
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#define FS_IOC_SETVERSION _IOW('v', 2, long)
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#define FS_IOC_FIEMAP _IOWR('f', 11, struct fiemap)
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#define FS_IOC32_GETFLAGS _IOR('f', 1, int)
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#define FS_IOC32_SETFLAGS _IOW('f', 2, int)
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#define FS_IOC32_GETVERSION _IOR('v', 1, int)
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#define FS_IOC32_SETVERSION _IOW('v', 2, int)
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#define FS_IOC_FSGETXATTR _IOR('X', 31, struct fsxattr)
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#define FS_IOC_FSSETXATTR _IOW('X', 32, struct fsxattr)
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#define FS_IOC_GETFSLABEL _IOR(0x94, 49, char[FSLABEL_MAX])
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#define FS_IOC_SETFSLABEL _IOW(0x94, 50, char[FSLABEL_MAX])
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/* Returns the external filesystem UUID, the same one blkid returns */
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#define FS_IOC_GETFSUUID _IOR(0x15, 0, struct fsuuid2)
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/*
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* Returns the path component under /sys/fs/ that refers to this filesystem;
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* also /sys/kernel/debug/ for filesystems with debugfs exports
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*/
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#define FS_IOC_GETFSSYSFSPATH _IOR(0x15, 1, struct fs_sysfs_path)
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/*
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* Inode flags (FS_IOC_GETFLAGS / FS_IOC_SETFLAGS)
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*
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* Note: for historical reasons, these flags were originally used and
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* defined for use by ext2/ext3, and then other file systems started
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* using these flags so they wouldn't need to write their own version
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* of chattr/lsattr (which was shipped as part of e2fsprogs). You
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* should think twice before trying to use these flags in new
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* contexts, or trying to assign these flags, since they are used both
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* as the UAPI and the on-disk encoding for ext2/3/4. Also, we are
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* almost out of 32-bit flags. :-)
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*
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* We have recently hoisted FS_IOC_FSGETXATTR / FS_IOC_FSSETXATTR from
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* XFS to the generic FS level interface. This uses a structure that
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* has padding and hence has more room to grow, so it may be more
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* appropriate for many new use cases.
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*
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* Please do not change these flags or interfaces before checking with
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* linux-fsdevel@vger.kernel.org and linux-api@vger.kernel.org.
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*/
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#define FS_SECRM_FL 0x00000001 /* Secure deletion */
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#define FS_UNRM_FL 0x00000002 /* Undelete */
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#define FS_COMPR_FL 0x00000004 /* Compress file */
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#define FS_SYNC_FL 0x00000008 /* Synchronous updates */
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#define FS_IMMUTABLE_FL 0x00000010 /* Immutable file */
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#define FS_APPEND_FL 0x00000020 /* writes to file may only append */
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#define FS_NODUMP_FL 0x00000040 /* do not dump file */
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#define FS_NOATIME_FL 0x00000080 /* do not update atime */
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/* Reserved for compression usage... */
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#define FS_DIRTY_FL 0x00000100
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#define FS_COMPRBLK_FL 0x00000200 /* One or more compressed clusters */
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#define FS_NOCOMP_FL 0x00000400 /* Don't compress */
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/* End compression flags --- maybe not all used */
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#define FS_ENCRYPT_FL 0x00000800 /* Encrypted file */
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#define FS_BTREE_FL 0x00001000 /* btree format dir */
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#define FS_INDEX_FL 0x00001000 /* hash-indexed directory */
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#define FS_IMAGIC_FL 0x00002000 /* AFS directory */
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#define FS_JOURNAL_DATA_FL 0x00004000 /* Reserved for ext3 */
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#define FS_NOTAIL_FL 0x00008000 /* file tail should not be merged */
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#define FS_DIRSYNC_FL 0x00010000 /* dirsync behaviour (directories only) */
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#define FS_TOPDIR_FL 0x00020000 /* Top of directory hierarchies*/
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#define FS_HUGE_FILE_FL 0x00040000 /* Reserved for ext4 */
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#define FS_EXTENT_FL 0x00080000 /* Extents */
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#define FS_VERITY_FL 0x00100000 /* Verity protected inode */
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#define FS_EA_INODE_FL 0x00200000 /* Inode used for large EA */
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#define FS_EOFBLOCKS_FL 0x00400000 /* Reserved for ext4 */
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#define FS_NOCOW_FL 0x00800000 /* Do not cow file */
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#define FS_DAX_FL 0x02000000 /* Inode is DAX */
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#define FS_INLINE_DATA_FL 0x10000000 /* Reserved for ext4 */
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#define FS_PROJINHERIT_FL 0x20000000 /* Create with parents projid */
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#define FS_CASEFOLD_FL 0x40000000 /* Folder is case insensitive */
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#define FS_RESERVED_FL 0x80000000 /* reserved for ext2 lib */
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#define FS_FL_USER_VISIBLE 0x0003DFFF /* User visible flags */
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#define FS_FL_USER_MODIFIABLE 0x000380FF /* User modifiable flags */
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#define SYNC_FILE_RANGE_WAIT_BEFORE 1
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#define SYNC_FILE_RANGE_WRITE 2
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#define SYNC_FILE_RANGE_WAIT_AFTER 4
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#define SYNC_FILE_RANGE_WRITE_AND_WAIT (SYNC_FILE_RANGE_WRITE | \
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SYNC_FILE_RANGE_WAIT_BEFORE | \
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SYNC_FILE_RANGE_WAIT_AFTER)
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/*
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* Flags for preadv2/pwritev2:
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*/
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typedef int __bitwise __kernel_rwf_t;
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/* high priority request, poll if possible */
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#define RWF_HIPRI ((__kernel_rwf_t)0x00000001)
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/* per-IO O_DSYNC */
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#define RWF_DSYNC ((__kernel_rwf_t)0x00000002)
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/* per-IO O_SYNC */
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#define RWF_SYNC ((__kernel_rwf_t)0x00000004)
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/* per-IO, return -EAGAIN if operation would block */
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#define RWF_NOWAIT ((__kernel_rwf_t)0x00000008)
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/* per-IO O_APPEND */
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#define RWF_APPEND ((__kernel_rwf_t)0x00000010)
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/* per-IO negation of O_APPEND */
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#define RWF_NOAPPEND ((__kernel_rwf_t)0x00000020)
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/* Atomic Write */
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#define RWF_ATOMIC ((__kernel_rwf_t)0x00000040)
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/* buffered IO that drops the cache after reading or writing data */
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#define RWF_DONTCACHE ((__kernel_rwf_t)0x00000080)
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/* mask of flags supported by the kernel */
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#define RWF_SUPPORTED (RWF_HIPRI | RWF_DSYNC | RWF_SYNC | RWF_NOWAIT |\
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RWF_APPEND | RWF_NOAPPEND | RWF_ATOMIC |\
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RWF_DONTCACHE)
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#define PROCFS_IOCTL_MAGIC 'f'
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/* Pagemap ioctl */
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#define PAGEMAP_SCAN _IOWR(PROCFS_IOCTL_MAGIC, 16, struct pm_scan_arg)
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/* Bitmasks provided in pm_scan_args masks and reported in page_region.categories. */
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#define PAGE_IS_WPALLOWED (1 << 0)
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#define PAGE_IS_WRITTEN (1 << 1)
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#define PAGE_IS_FILE (1 << 2)
|
||||
#define PAGE_IS_PRESENT (1 << 3)
|
||||
#define PAGE_IS_SWAPPED (1 << 4)
|
||||
#define PAGE_IS_PFNZERO (1 << 5)
|
||||
#define PAGE_IS_HUGE (1 << 6)
|
||||
#define PAGE_IS_SOFT_DIRTY (1 << 7)
|
||||
|
||||
/*
|
||||
* struct page_region - Page region with flags
|
||||
* @start: Start of the region
|
||||
* @end: End of the region (exclusive)
|
||||
* @categories: PAGE_IS_* category bitmask for the region
|
||||
*/
|
||||
struct page_region {
|
||||
__u64 start;
|
||||
__u64 end;
|
||||
__u64 categories;
|
||||
};
|
||||
|
||||
/* Flags for PAGEMAP_SCAN ioctl */
|
||||
#define PM_SCAN_WP_MATCHING (1 << 0) /* Write protect the pages matched. */
|
||||
#define PM_SCAN_CHECK_WPASYNC (1 << 1) /* Abort the scan when a non-WP-enabled page is found. */
|
||||
|
||||
/*
|
||||
* struct pm_scan_arg - Pagemap ioctl argument
|
||||
* @size: Size of the structure
|
||||
* @flags: Flags for the IOCTL
|
||||
* @start: Starting address of the region
|
||||
* @end: Ending address of the region
|
||||
* @walk_end Address where the scan stopped (written by kernel).
|
||||
* walk_end == end (address tags cleared) informs that the scan completed on entire range.
|
||||
* @vec: Address of page_region struct array for output
|
||||
* @vec_len: Length of the page_region struct array
|
||||
* @max_pages: Optional limit for number of returned pages (0 = disabled)
|
||||
* @category_inverted: PAGE_IS_* categories which values match if 0 instead of 1
|
||||
* @category_mask: Skip pages for which any category doesn't match
|
||||
* @category_anyof_mask: Skip pages for which no category matches
|
||||
* @return_mask: PAGE_IS_* categories that are to be reported in `page_region`s returned
|
||||
*/
|
||||
struct pm_scan_arg {
|
||||
__u64 size;
|
||||
__u64 flags;
|
||||
__u64 start;
|
||||
__u64 end;
|
||||
__u64 walk_end;
|
||||
__u64 vec;
|
||||
__u64 vec_len;
|
||||
__u64 max_pages;
|
||||
__u64 category_inverted;
|
||||
__u64 category_mask;
|
||||
__u64 category_anyof_mask;
|
||||
__u64 return_mask;
|
||||
};
|
||||
|
||||
/* /proc/<pid>/maps ioctl */
|
||||
#define PROCMAP_QUERY _IOWR(PROCFS_IOCTL_MAGIC, 17, struct procmap_query)
|
||||
|
||||
enum procmap_query_flags {
|
||||
/*
|
||||
* VMA permission flags.
|
||||
*
|
||||
* Can be used as part of procmap_query.query_flags field to look up
|
||||
* only VMAs satisfying specified subset of permissions. E.g., specifying
|
||||
* PROCMAP_QUERY_VMA_READABLE only will return both readable and read/write VMAs,
|
||||
* while having PROCMAP_QUERY_VMA_READABLE | PROCMAP_QUERY_VMA_WRITABLE will only
|
||||
* return read/write VMAs, though both executable/non-executable and
|
||||
* private/shared will be ignored.
|
||||
*
|
||||
* PROCMAP_QUERY_VMA_* flags are also returned in procmap_query.vma_flags
|
||||
* field to specify actual VMA permissions.
|
||||
*/
|
||||
PROCMAP_QUERY_VMA_READABLE = 0x01,
|
||||
PROCMAP_QUERY_VMA_WRITABLE = 0x02,
|
||||
PROCMAP_QUERY_VMA_EXECUTABLE = 0x04,
|
||||
PROCMAP_QUERY_VMA_SHARED = 0x08,
|
||||
/*
|
||||
* Query modifier flags.
|
||||
*
|
||||
* By default VMA that covers provided address is returned, or -ENOENT
|
||||
* is returned. With PROCMAP_QUERY_COVERING_OR_NEXT_VMA flag set, closest
|
||||
* VMA with vma_start > addr will be returned if no covering VMA is
|
||||
* found.
|
||||
*
|
||||
* PROCMAP_QUERY_FILE_BACKED_VMA instructs query to consider only VMAs that
|
||||
* have file backing. Can be combined with PROCMAP_QUERY_COVERING_OR_NEXT_VMA
|
||||
* to iterate all VMAs with file backing.
|
||||
*/
|
||||
PROCMAP_QUERY_COVERING_OR_NEXT_VMA = 0x10,
|
||||
PROCMAP_QUERY_FILE_BACKED_VMA = 0x20,
|
||||
};
|
||||
|
||||
/*
|
||||
* Input/output argument structured passed into ioctl() call. It can be used
|
||||
* to query a set of VMAs (Virtual Memory Areas) of a process.
|
||||
*
|
||||
* Each field can be one of three kinds, marked in a short comment to the
|
||||
* right of the field:
|
||||
* - "in", input argument, user has to provide this value, kernel doesn't modify it;
|
||||
* - "out", output argument, kernel sets this field with VMA data;
|
||||
* - "in/out", input and output argument; user provides initial value (used
|
||||
* to specify maximum allowable buffer size), and kernel sets it to actual
|
||||
* amount of data written (or zero, if there is no data).
|
||||
*
|
||||
* If matching VMA is found (according to criterias specified by
|
||||
* query_addr/query_flags, all the out fields are filled out, and ioctl()
|
||||
* returns 0. If there is no matching VMA, -ENOENT will be returned.
|
||||
* In case of any other error, negative error code other than -ENOENT is
|
||||
* returned.
|
||||
*
|
||||
* Most of the data is similar to the one returned as text in /proc/<pid>/maps
|
||||
* file, but procmap_query provides more querying flexibility. There are no
|
||||
* consistency guarantees between subsequent ioctl() calls, but data returned
|
||||
* for matched VMA is self-consistent.
|
||||
*/
|
||||
struct procmap_query {
|
||||
/* Query struct size, for backwards/forward compatibility */
|
||||
__u64 size;
|
||||
/*
|
||||
* Query flags, a combination of enum procmap_query_flags values.
|
||||
* Defines query filtering and behavior, see enum procmap_query_flags.
|
||||
*
|
||||
* Input argument, provided by user. Kernel doesn't modify it.
|
||||
*/
|
||||
__u64 query_flags; /* in */
|
||||
/*
|
||||
* Query address. By default, VMA that covers this address will
|
||||
* be looked up. PROCMAP_QUERY_* flags above modify this default
|
||||
* behavior further.
|
||||
*
|
||||
* Input argument, provided by user. Kernel doesn't modify it.
|
||||
*/
|
||||
__u64 query_addr; /* in */
|
||||
/* VMA starting (inclusive) and ending (exclusive) address, if VMA is found. */
|
||||
__u64 vma_start; /* out */
|
||||
__u64 vma_end; /* out */
|
||||
/* VMA permissions flags. A combination of PROCMAP_QUERY_VMA_* flags. */
|
||||
__u64 vma_flags; /* out */
|
||||
/* VMA backing page size granularity. */
|
||||
__u64 vma_page_size; /* out */
|
||||
/*
|
||||
* VMA file offset. If VMA has file backing, this specifies offset
|
||||
* within the file that VMA's start address corresponds to.
|
||||
* Is set to zero if VMA has no backing file.
|
||||
*/
|
||||
__u64 vma_offset; /* out */
|
||||
/* Backing file's inode number, or zero, if VMA has no backing file. */
|
||||
__u64 inode; /* out */
|
||||
/* Backing file's device major/minor number, or zero, if VMA has no backing file. */
|
||||
__u32 dev_major; /* out */
|
||||
__u32 dev_minor; /* out */
|
||||
/*
|
||||
* If set to non-zero value, signals the request to return VMA name
|
||||
* (i.e., VMA's backing file's absolute path, with " (deleted)" suffix
|
||||
* appended, if file was unlinked from FS) for matched VMA. VMA name
|
||||
* can also be some special name (e.g., "[heap]", "[stack]") or could
|
||||
* be even user-supplied with prctl(PR_SET_VMA, PR_SET_VMA_ANON_NAME).
|
||||
*
|
||||
* Kernel will set this field to zero, if VMA has no associated name.
|
||||
* Otherwise kernel will return actual amount of bytes filled in
|
||||
* user-supplied buffer (see vma_name_addr field below), including the
|
||||
* terminating zero.
|
||||
*
|
||||
* If VMA name is longer that user-supplied maximum buffer size,
|
||||
* -E2BIG error is returned.
|
||||
*
|
||||
* If this field is set to non-zero value, vma_name_addr should point
|
||||
* to valid user space memory buffer of at least vma_name_size bytes.
|
||||
* If set to zero, vma_name_addr should be set to zero as well
|
||||
*/
|
||||
__u32 vma_name_size; /* in/out */
|
||||
/*
|
||||
* If set to non-zero value, signals the request to extract and return
|
||||
* VMA's backing file's build ID, if the backing file is an ELF file
|
||||
* and it contains embedded build ID.
|
||||
*
|
||||
* Kernel will set this field to zero, if VMA has no backing file,
|
||||
* backing file is not an ELF file, or ELF file has no build ID
|
||||
* embedded.
|
||||
*
|
||||
* Build ID is a binary value (not a string). Kernel will set
|
||||
* build_id_size field to exact number of bytes used for build ID.
|
||||
* If build ID is requested and present, but needs more bytes than
|
||||
* user-supplied maximum buffer size (see build_id_addr field below),
|
||||
* -E2BIG error will be returned.
|
||||
*
|
||||
* If this field is set to non-zero value, build_id_addr should point
|
||||
* to valid user space memory buffer of at least build_id_size bytes.
|
||||
* If set to zero, build_id_addr should be set to zero as well
|
||||
*/
|
||||
__u32 build_id_size; /* in/out */
|
||||
/*
|
||||
* User-supplied address of a buffer of at least vma_name_size bytes
|
||||
* for kernel to fill with matched VMA's name (see vma_name_size field
|
||||
* description above for details).
|
||||
*
|
||||
* Should be set to zero if VMA name should not be returned.
|
||||
*/
|
||||
__u64 vma_name_addr; /* in */
|
||||
/*
|
||||
* User-supplied address of a buffer of at least build_id_size bytes
|
||||
* for kernel to fill with matched VMA's ELF build ID, if available
|
||||
* (see build_id_size field description above for details).
|
||||
*
|
||||
* Should be set to zero if build ID should not be returned.
|
||||
*/
|
||||
__u64 build_id_addr; /* in */
|
||||
};
|
||||
|
||||
#endif /* _LINUX_FS_H */
|
||||
@@ -0,0 +1,195 @@
|
||||
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
|
||||
/*
|
||||
* fscrypt user API
|
||||
*
|
||||
* These ioctls can be used on filesystems that support fscrypt. See the
|
||||
* "User API" section of Documentation/filesystems/fscrypt.rst.
|
||||
*/
|
||||
#ifndef _LINUX_FSCRYPT_H
|
||||
#define _LINUX_FSCRYPT_H
|
||||
|
||||
#include <linux/ioctl.h>
|
||||
#include <linux/types.h>
|
||||
|
||||
/* Encryption policy flags */
|
||||
#define FSCRYPT_POLICY_FLAGS_PAD_4 0x00
|
||||
#define FSCRYPT_POLICY_FLAGS_PAD_8 0x01
|
||||
#define FSCRYPT_POLICY_FLAGS_PAD_16 0x02
|
||||
#define FSCRYPT_POLICY_FLAGS_PAD_32 0x03
|
||||
#define FSCRYPT_POLICY_FLAGS_PAD_MASK 0x03
|
||||
#define FSCRYPT_POLICY_FLAG_DIRECT_KEY 0x04
|
||||
#define FSCRYPT_POLICY_FLAG_IV_INO_LBLK_64 0x08
|
||||
#define FSCRYPT_POLICY_FLAG_IV_INO_LBLK_32 0x10
|
||||
|
||||
/* Encryption algorithms */
|
||||
#define FSCRYPT_MODE_AES_256_XTS 1
|
||||
#define FSCRYPT_MODE_AES_256_CTS 4
|
||||
#define FSCRYPT_MODE_AES_128_CBC 5
|
||||
#define FSCRYPT_MODE_AES_128_CTS 6
|
||||
#define FSCRYPT_MODE_SM4_XTS 7
|
||||
#define FSCRYPT_MODE_SM4_CTS 8
|
||||
#define FSCRYPT_MODE_ADIANTUM 9
|
||||
#define FSCRYPT_MODE_AES_256_HCTR2 10
|
||||
/* If adding a mode number > 10, update FSCRYPT_MODE_MAX in fscrypt_private.h */
|
||||
|
||||
/*
|
||||
* Legacy policy version; ad-hoc KDF and no key verification.
|
||||
* For new encrypted directories, use fscrypt_policy_v2 instead.
|
||||
*
|
||||
* Careful: the .version field for this is actually 0, not 1.
|
||||
*/
|
||||
#define FSCRYPT_POLICY_V1 0
|
||||
#define FSCRYPT_KEY_DESCRIPTOR_SIZE 8
|
||||
struct fscrypt_policy_v1 {
|
||||
__u8 version;
|
||||
__u8 contents_encryption_mode;
|
||||
__u8 filenames_encryption_mode;
|
||||
__u8 flags;
|
||||
__u8 master_key_descriptor[FSCRYPT_KEY_DESCRIPTOR_SIZE];
|
||||
};
|
||||
|
||||
/*
|
||||
* Process-subscribed "logon" key description prefix and payload format.
|
||||
* Deprecated; prefer FS_IOC_ADD_ENCRYPTION_KEY instead.
|
||||
*/
|
||||
#define FSCRYPT_KEY_DESC_PREFIX "fscrypt:"
|
||||
#define FSCRYPT_KEY_DESC_PREFIX_SIZE 8
|
||||
#define FSCRYPT_MAX_KEY_SIZE 64
|
||||
struct fscrypt_key {
|
||||
__u32 mode;
|
||||
__u8 raw[FSCRYPT_MAX_KEY_SIZE];
|
||||
__u32 size;
|
||||
};
|
||||
|
||||
/*
|
||||
* New policy version with HKDF and key verification (recommended).
|
||||
*/
|
||||
#define FSCRYPT_POLICY_V2 2
|
||||
#define FSCRYPT_KEY_IDENTIFIER_SIZE 16
|
||||
struct fscrypt_policy_v2 {
|
||||
__u8 version;
|
||||
__u8 contents_encryption_mode;
|
||||
__u8 filenames_encryption_mode;
|
||||
__u8 flags;
|
||||
__u8 log2_data_unit_size;
|
||||
__u8 __reserved[3];
|
||||
__u8 master_key_identifier[FSCRYPT_KEY_IDENTIFIER_SIZE];
|
||||
};
|
||||
|
||||
/* Struct passed to FS_IOC_GET_ENCRYPTION_POLICY_EX */
|
||||
struct fscrypt_get_policy_ex_arg {
|
||||
__u64 policy_size; /* input/output */
|
||||
union {
|
||||
__u8 version;
|
||||
struct fscrypt_policy_v1 v1;
|
||||
struct fscrypt_policy_v2 v2;
|
||||
} policy; /* output */
|
||||
};
|
||||
|
||||
/*
|
||||
* v1 policy keys are specified by an arbitrary 8-byte key "descriptor",
|
||||
* matching fscrypt_policy_v1::master_key_descriptor.
|
||||
*/
|
||||
#define FSCRYPT_KEY_SPEC_TYPE_DESCRIPTOR 1
|
||||
|
||||
/*
|
||||
* v2 policy keys are specified by a 16-byte key "identifier" which the kernel
|
||||
* calculates as a cryptographic hash of the key itself,
|
||||
* matching fscrypt_policy_v2::master_key_identifier.
|
||||
*/
|
||||
#define FSCRYPT_KEY_SPEC_TYPE_IDENTIFIER 2
|
||||
|
||||
/*
|
||||
* Specifies a key, either for v1 or v2 policies. This doesn't contain the
|
||||
* actual key itself; this is just the "name" of the key.
|
||||
*/
|
||||
struct fscrypt_key_specifier {
|
||||
__u32 type; /* one of FSCRYPT_KEY_SPEC_TYPE_* */
|
||||
__u32 __reserved;
|
||||
union {
|
||||
__u8 __reserved[32]; /* reserve some extra space */
|
||||
__u8 descriptor[FSCRYPT_KEY_DESCRIPTOR_SIZE];
|
||||
__u8 identifier[FSCRYPT_KEY_IDENTIFIER_SIZE];
|
||||
} u;
|
||||
};
|
||||
|
||||
/*
|
||||
* Payload of Linux keyring key of type "fscrypt-provisioning", referenced by
|
||||
* fscrypt_add_key_arg::key_id as an alternative to fscrypt_add_key_arg::raw.
|
||||
*/
|
||||
struct fscrypt_provisioning_key_payload {
|
||||
__u32 type;
|
||||
__u32 __reserved;
|
||||
__u8 raw[];
|
||||
};
|
||||
|
||||
/* Struct passed to FS_IOC_ADD_ENCRYPTION_KEY */
|
||||
struct fscrypt_add_key_arg {
|
||||
struct fscrypt_key_specifier key_spec;
|
||||
__u32 raw_size;
|
||||
__u32 key_id;
|
||||
__u32 __reserved[8];
|
||||
__u8 raw[];
|
||||
};
|
||||
|
||||
/* Struct passed to FS_IOC_REMOVE_ENCRYPTION_KEY */
|
||||
struct fscrypt_remove_key_arg {
|
||||
struct fscrypt_key_specifier key_spec;
|
||||
#define FSCRYPT_KEY_REMOVAL_STATUS_FLAG_FILES_BUSY 0x00000001
|
||||
#define FSCRYPT_KEY_REMOVAL_STATUS_FLAG_OTHER_USERS 0x00000002
|
||||
__u32 removal_status_flags; /* output */
|
||||
__u32 __reserved[5];
|
||||
};
|
||||
|
||||
/* Struct passed to FS_IOC_GET_ENCRYPTION_KEY_STATUS */
|
||||
struct fscrypt_get_key_status_arg {
|
||||
/* input */
|
||||
struct fscrypt_key_specifier key_spec;
|
||||
__u32 __reserved[6];
|
||||
|
||||
/* output */
|
||||
#define FSCRYPT_KEY_STATUS_ABSENT 1
|
||||
#define FSCRYPT_KEY_STATUS_PRESENT 2
|
||||
#define FSCRYPT_KEY_STATUS_INCOMPLETELY_REMOVED 3
|
||||
__u32 status;
|
||||
#define FSCRYPT_KEY_STATUS_FLAG_ADDED_BY_SELF 0x00000001
|
||||
__u32 status_flags;
|
||||
__u32 user_count;
|
||||
__u32 __out_reserved[13];
|
||||
};
|
||||
|
||||
#define FS_IOC_SET_ENCRYPTION_POLICY _IOR('f', 19, struct fscrypt_policy_v1)
|
||||
#define FS_IOC_GET_ENCRYPTION_PWSALT _IOW('f', 20, __u8[16])
|
||||
#define FS_IOC_GET_ENCRYPTION_POLICY _IOW('f', 21, struct fscrypt_policy_v1)
|
||||
#define FS_IOC_GET_ENCRYPTION_POLICY_EX _IOWR('f', 22, __u8[9]) /* size + version */
|
||||
#define FS_IOC_ADD_ENCRYPTION_KEY _IOWR('f', 23, struct fscrypt_add_key_arg)
|
||||
#define FS_IOC_REMOVE_ENCRYPTION_KEY _IOWR('f', 24, struct fscrypt_remove_key_arg)
|
||||
#define FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS _IOWR('f', 25, struct fscrypt_remove_key_arg)
|
||||
#define FS_IOC_GET_ENCRYPTION_KEY_STATUS _IOWR('f', 26, struct fscrypt_get_key_status_arg)
|
||||
#define FS_IOC_GET_ENCRYPTION_NONCE _IOR('f', 27, __u8[16])
|
||||
|
||||
/**********************************************************************/
|
||||
|
||||
/* old names; don't add anything new here! */
|
||||
#define fscrypt_policy fscrypt_policy_v1
|
||||
#define FS_KEY_DESCRIPTOR_SIZE FSCRYPT_KEY_DESCRIPTOR_SIZE
|
||||
#define FS_POLICY_FLAGS_PAD_4 FSCRYPT_POLICY_FLAGS_PAD_4
|
||||
#define FS_POLICY_FLAGS_PAD_8 FSCRYPT_POLICY_FLAGS_PAD_8
|
||||
#define FS_POLICY_FLAGS_PAD_16 FSCRYPT_POLICY_FLAGS_PAD_16
|
||||
#define FS_POLICY_FLAGS_PAD_32 FSCRYPT_POLICY_FLAGS_PAD_32
|
||||
#define FS_POLICY_FLAGS_PAD_MASK FSCRYPT_POLICY_FLAGS_PAD_MASK
|
||||
#define FS_POLICY_FLAG_DIRECT_KEY FSCRYPT_POLICY_FLAG_DIRECT_KEY
|
||||
#define FS_POLICY_FLAGS_VALID 0x07 /* contains old flags only */
|
||||
#define FS_ENCRYPTION_MODE_INVALID 0 /* never used */
|
||||
#define FS_ENCRYPTION_MODE_AES_256_XTS FSCRYPT_MODE_AES_256_XTS
|
||||
#define FS_ENCRYPTION_MODE_AES_256_GCM 2 /* never used */
|
||||
#define FS_ENCRYPTION_MODE_AES_256_CBC 3 /* never used */
|
||||
#define FS_ENCRYPTION_MODE_AES_256_CTS FSCRYPT_MODE_AES_256_CTS
|
||||
#define FS_ENCRYPTION_MODE_AES_128_CBC FSCRYPT_MODE_AES_128_CBC
|
||||
#define FS_ENCRYPTION_MODE_AES_128_CTS FSCRYPT_MODE_AES_128_CTS
|
||||
#define FS_ENCRYPTION_MODE_ADIANTUM FSCRYPT_MODE_ADIANTUM
|
||||
#define FS_KEY_DESC_PREFIX FSCRYPT_KEY_DESC_PREFIX
|
||||
#define FS_KEY_DESC_PREFIX_SIZE FSCRYPT_KEY_DESC_PREFIX_SIZE
|
||||
#define FS_MAX_KEY_SIZE FSCRYPT_MAX_KEY_SIZE
|
||||
|
||||
#endif /* _LINUX_FSCRYPT_H */
|
||||
@@ -0,0 +1,21 @@
|
||||
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
|
||||
#ifndef _LINUX_LIMITS_H
|
||||
#define _LINUX_LIMITS_H
|
||||
|
||||
#define NR_OPEN 1024
|
||||
|
||||
#define NGROUPS_MAX 65536 /* supplemental group IDs are available */
|
||||
#define ARG_MAX 131072 /* # bytes of args + environ for exec() */
|
||||
#define LINK_MAX 127 /* # links a file may have */
|
||||
#define MAX_CANON 255 /* size of the canonical input queue */
|
||||
#define MAX_INPUT 255 /* size of the type-ahead buffer */
|
||||
#define NAME_MAX 255 /* # chars in a file name */
|
||||
#define PATH_MAX 4096 /* # chars in a path name including nul */
|
||||
#define PIPE_BUF 4096 /* # bytes in atomic write to a pipe */
|
||||
#define XATTR_NAME_MAX 255 /* # chars in an extended attribute name */
|
||||
#define XATTR_SIZE_MAX 65536 /* size of an extended attribute value (64k) */
|
||||
#define XATTR_LIST_MAX 65536 /* size of extended attribute namelist (64k) */
|
||||
|
||||
#define RTSIG_MAX 32
|
||||
|
||||
#endif
|
||||
@@ -0,0 +1,227 @@
|
||||
#ifndef _LINUX_MOUNT_H
|
||||
#define _LINUX_MOUNT_H
|
||||
|
||||
#include <linux/types.h>
|
||||
|
||||
/*
|
||||
* These are the fs-independent mount-flags: up to 32 flags are supported
|
||||
*
|
||||
* Usage of these is restricted within the kernel to core mount(2) code and
|
||||
* callers of sys_mount() only. Filesystems should be using the SB_*
|
||||
* equivalent instead.
|
||||
*/
|
||||
#define MS_RDONLY 1 /* Mount read-only */
|
||||
#define MS_NOSUID 2 /* Ignore suid and sgid bits */
|
||||
#define MS_NODEV 4 /* Disallow access to device special files */
|
||||
#define MS_NOEXEC 8 /* Disallow program execution */
|
||||
#define MS_SYNCHRONOUS 16 /* Writes are synced at once */
|
||||
#define MS_REMOUNT 32 /* Alter flags of a mounted FS */
|
||||
#define MS_MANDLOCK 64 /* Allow mandatory locks on an FS */
|
||||
#define MS_DIRSYNC 128 /* Directory modifications are synchronous */
|
||||
#define MS_NOSYMFOLLOW 256 /* Do not follow symlinks */
|
||||
#define MS_NOATIME 1024 /* Do not update access times. */
|
||||
#define MS_NODIRATIME 2048 /* Do not update directory access times */
|
||||
#define MS_BIND 4096
|
||||
#define MS_MOVE 8192
|
||||
#define MS_REC 16384
|
||||
#define MS_VERBOSE 32768 /* War is peace. Verbosity is silence.
|
||||
MS_VERBOSE is deprecated. */
|
||||
#define MS_SILENT 32768
|
||||
#define MS_POSIXACL (1<<16) /* VFS does not apply the umask */
|
||||
#define MS_UNBINDABLE (1<<17) /* change to unbindable */
|
||||
#define MS_PRIVATE (1<<18) /* change to private */
|
||||
#define MS_SLAVE (1<<19) /* change to slave */
|
||||
#define MS_SHARED (1<<20) /* change to shared */
|
||||
#define MS_RELATIME (1<<21) /* Update atime relative to mtime/ctime. */
|
||||
#define MS_KERNMOUNT (1<<22) /* this is a kern_mount call */
|
||||
#define MS_I_VERSION (1<<23) /* Update inode I_version field */
|
||||
#define MS_STRICTATIME (1<<24) /* Always perform atime updates */
|
||||
#define MS_LAZYTIME (1<<25) /* Update the on-disk [acm]times lazily */
|
||||
|
||||
/* These sb flags are internal to the kernel */
|
||||
#define MS_SUBMOUNT (1<<26)
|
||||
#define MS_NOREMOTELOCK (1<<27)
|
||||
#define MS_NOSEC (1<<28)
|
||||
#define MS_BORN (1<<29)
|
||||
#define MS_ACTIVE (1<<30)
|
||||
#define MS_NOUSER (1<<31)
|
||||
|
||||
/*
|
||||
* Superblock flags that can be altered by MS_REMOUNT
|
||||
*/
|
||||
#define MS_RMT_MASK (MS_RDONLY|MS_SYNCHRONOUS|MS_MANDLOCK|MS_I_VERSION|\
|
||||
MS_LAZYTIME)
|
||||
|
||||
/*
|
||||
* Old magic mount flag and mask
|
||||
*/
|
||||
#define MS_MGC_VAL 0xC0ED0000
|
||||
#define MS_MGC_MSK 0xffff0000
|
||||
|
||||
/*
|
||||
* open_tree() flags.
|
||||
*/
|
||||
#define OPEN_TREE_CLONE 1 /* Clone the target tree and attach the clone */
|
||||
#define OPEN_TREE_CLOEXEC O_CLOEXEC /* Close the file on execve() */
|
||||
|
||||
/*
|
||||
* move_mount() flags.
|
||||
*/
|
||||
#define MOVE_MOUNT_F_SYMLINKS 0x00000001 /* Follow symlinks on from path */
|
||||
#define MOVE_MOUNT_F_AUTOMOUNTS 0x00000002 /* Follow automounts on from path */
|
||||
#define MOVE_MOUNT_F_EMPTY_PATH 0x00000004 /* Empty from path permitted */
|
||||
#define MOVE_MOUNT_T_SYMLINKS 0x00000010 /* Follow symlinks on to path */
|
||||
#define MOVE_MOUNT_T_AUTOMOUNTS 0x00000020 /* Follow automounts on to path */
|
||||
#define MOVE_MOUNT_T_EMPTY_PATH 0x00000040 /* Empty to path permitted */
|
||||
#define MOVE_MOUNT_SET_GROUP 0x00000100 /* Set sharing group instead */
|
||||
#define MOVE_MOUNT_BENEATH 0x00000200 /* Mount beneath top mount */
|
||||
#define MOVE_MOUNT__MASK 0x00000377
|
||||
|
||||
/*
|
||||
* fsopen() flags.
|
||||
*/
|
||||
#define FSOPEN_CLOEXEC 0x00000001
|
||||
|
||||
/*
|
||||
* fspick() flags.
|
||||
*/
|
||||
#define FSPICK_CLOEXEC 0x00000001
|
||||
#define FSPICK_SYMLINK_NOFOLLOW 0x00000002
|
||||
#define FSPICK_NO_AUTOMOUNT 0x00000004
|
||||
#define FSPICK_EMPTY_PATH 0x00000008
|
||||
|
||||
/*
|
||||
* The type of fsconfig() call made.
|
||||
*/
|
||||
enum fsconfig_command {
|
||||
FSCONFIG_SET_FLAG = 0, /* Set parameter, supplying no value */
|
||||
FSCONFIG_SET_STRING = 1, /* Set parameter, supplying a string value */
|
||||
FSCONFIG_SET_BINARY = 2, /* Set parameter, supplying a binary blob value */
|
||||
FSCONFIG_SET_PATH = 3, /* Set parameter, supplying an object by path */
|
||||
FSCONFIG_SET_PATH_EMPTY = 4, /* Set parameter, supplying an object by (empty) path */
|
||||
FSCONFIG_SET_FD = 5, /* Set parameter, supplying an object by fd */
|
||||
FSCONFIG_CMD_CREATE = 6, /* Create new or reuse existing superblock */
|
||||
FSCONFIG_CMD_RECONFIGURE = 7, /* Invoke superblock reconfiguration */
|
||||
FSCONFIG_CMD_CREATE_EXCL = 8, /* Create new superblock, fail if reusing existing superblock */
|
||||
};
|
||||
|
||||
/*
|
||||
* fsmount() flags.
|
||||
*/
|
||||
#define FSMOUNT_CLOEXEC 0x00000001
|
||||
|
||||
/*
|
||||
* Mount attributes.
|
||||
*/
|
||||
#define MOUNT_ATTR_RDONLY 0x00000001 /* Mount read-only */
|
||||
#define MOUNT_ATTR_NOSUID 0x00000002 /* Ignore suid and sgid bits */
|
||||
#define MOUNT_ATTR_NODEV 0x00000004 /* Disallow access to device special files */
|
||||
#define MOUNT_ATTR_NOEXEC 0x00000008 /* Disallow program execution */
|
||||
#define MOUNT_ATTR__ATIME 0x00000070 /* Setting on how atime should be updated */
|
||||
#define MOUNT_ATTR_RELATIME 0x00000000 /* - Update atime relative to mtime/ctime. */
|
||||
#define MOUNT_ATTR_NOATIME 0x00000010 /* - Do not update access times. */
|
||||
#define MOUNT_ATTR_STRICTATIME 0x00000020 /* - Always perform atime updates */
|
||||
#define MOUNT_ATTR_NODIRATIME 0x00000080 /* Do not update directory access times */
|
||||
#define MOUNT_ATTR_IDMAP 0x00100000 /* Idmap mount to @userns_fd in struct mount_attr. */
|
||||
#define MOUNT_ATTR_NOSYMFOLLOW 0x00200000 /* Do not follow symlinks */
|
||||
|
||||
/*
|
||||
* mount_setattr()
|
||||
*/
|
||||
struct mount_attr {
|
||||
__u64 attr_set;
|
||||
__u64 attr_clr;
|
||||
__u64 propagation;
|
||||
__u64 userns_fd;
|
||||
};
|
||||
|
||||
/* List of all mount_attr versions. */
|
||||
#define MOUNT_ATTR_SIZE_VER0 32 /* sizeof first published struct */
|
||||
|
||||
|
||||
/*
|
||||
* Structure for getting mount/superblock/filesystem info with statmount(2).
|
||||
*
|
||||
* The interface is similar to statx(2): individual fields or groups can be
|
||||
* selected with the @mask argument of statmount(). Kernel will set the @mask
|
||||
* field according to the supported fields.
|
||||
*
|
||||
* If string fields are selected, then the caller needs to pass a buffer that
|
||||
* has space after the fixed part of the structure. Nul terminated strings are
|
||||
* copied there and offsets relative to @str are stored in the relevant fields.
|
||||
* If the buffer is too small, then EOVERFLOW is returned. The actually used
|
||||
* size is returned in @size.
|
||||
*/
|
||||
struct statmount {
|
||||
__u32 size; /* Total size, including strings */
|
||||
__u32 mnt_opts; /* [str] Options (comma separated, escaped) */
|
||||
__u64 mask; /* What results were written */
|
||||
__u32 sb_dev_major; /* Device ID */
|
||||
__u32 sb_dev_minor;
|
||||
__u64 sb_magic; /* ..._SUPER_MAGIC */
|
||||
__u32 sb_flags; /* SB_{RDONLY,SYNCHRONOUS,DIRSYNC,LAZYTIME} */
|
||||
__u32 fs_type; /* [str] Filesystem type */
|
||||
__u64 mnt_id; /* Unique ID of mount */
|
||||
__u64 mnt_parent_id; /* Unique ID of parent (for root == mnt_id) */
|
||||
__u32 mnt_id_old; /* Reused IDs used in proc/.../mountinfo */
|
||||
__u32 mnt_parent_id_old;
|
||||
__u64 mnt_attr; /* MOUNT_ATTR_... */
|
||||
__u64 mnt_propagation; /* MS_{SHARED,SLAVE,PRIVATE,UNBINDABLE} */
|
||||
__u64 mnt_peer_group; /* ID of shared peer group */
|
||||
__u64 mnt_master; /* Mount receives propagation from this ID */
|
||||
__u64 propagate_from; /* Propagation from in current namespace */
|
||||
__u32 mnt_root; /* [str] Root of mount relative to root of fs */
|
||||
__u32 mnt_point; /* [str] Mountpoint relative to current root */
|
||||
__u64 mnt_ns_id; /* ID of the mount namespace */
|
||||
__u32 fs_subtype; /* [str] Subtype of fs_type (if any) */
|
||||
__u32 sb_source; /* [str] Source string of the mount */
|
||||
__u32 opt_num; /* Number of fs options */
|
||||
__u32 opt_array; /* [str] Array of nul terminated fs options */
|
||||
__u32 opt_sec_num; /* Number of security options */
|
||||
__u32 opt_sec_array; /* [str] Array of nul terminated security options */
|
||||
__u64 __spare2[46];
|
||||
char str[]; /* Variable size part containing strings */
|
||||
};
|
||||
|
||||
/*
|
||||
* Structure for passing mount ID and miscellaneous parameters to statmount(2)
|
||||
* and listmount(2).
|
||||
*
|
||||
* For statmount(2) @param represents the request mask.
|
||||
* For listmount(2) @param represents the last listed mount id (or zero).
|
||||
*/
|
||||
struct mnt_id_req {
|
||||
__u32 size;
|
||||
__u32 spare;
|
||||
__u64 mnt_id;
|
||||
__u64 param;
|
||||
__u64 mnt_ns_id;
|
||||
};
|
||||
|
||||
/* List of all mnt_id_req versions. */
|
||||
#define MNT_ID_REQ_SIZE_VER0 24 /* sizeof first published struct */
|
||||
#define MNT_ID_REQ_SIZE_VER1 32 /* sizeof second published struct */
|
||||
|
||||
/*
|
||||
* @mask bits for statmount(2)
|
||||
*/
|
||||
#define STATMOUNT_SB_BASIC 0x00000001U /* Want/got sb_... */
|
||||
#define STATMOUNT_MNT_BASIC 0x00000002U /* Want/got mnt_... */
|
||||
#define STATMOUNT_PROPAGATE_FROM 0x00000004U /* Want/got propagate_from */
|
||||
#define STATMOUNT_MNT_ROOT 0x00000008U /* Want/got mnt_root */
|
||||
#define STATMOUNT_MNT_POINT 0x00000010U /* Want/got mnt_point */
|
||||
#define STATMOUNT_FS_TYPE 0x00000020U /* Want/got fs_type */
|
||||
#define STATMOUNT_MNT_NS_ID 0x00000040U /* Want/got mnt_ns_id */
|
||||
#define STATMOUNT_MNT_OPTS 0x00000080U /* Want/got mnt_opts */
|
||||
#define STATMOUNT_FS_SUBTYPE 0x00000100U /* Want/got fs_subtype */
|
||||
#define STATMOUNT_SB_SOURCE 0x00000200U /* Want/got sb_source */
|
||||
#define STATMOUNT_OPT_ARRAY 0x00000400U /* Want/got opt_... */
|
||||
#define STATMOUNT_OPT_SEC_ARRAY 0x00000800U /* Want/got opt_sec... */
|
||||
|
||||
/*
|
||||
* Special @mnt_id values that can be passed to listmount
|
||||
*/
|
||||
#define LSMT_ROOT 0xffffffffffffffff /* root mount */
|
||||
#define LISTMOUNT_REVERSE (1 << 0) /* List later mounts first */
|
||||
|
||||
#endif /* _LINUX_MOUNT_H */
|
||||
@@ -21,10 +21,6 @@ for i in *.h */*.h; do
|
||||
# set AUTOFS_DEV_IOCTL_VERSION_MINOR to 0
|
||||
sed -r -i '/^#define[[:space:]]+AUTOFS_DEV_IOCTL_VERSION_MINOR/ s/[0-9]+/0/' "$i"
|
||||
;;
|
||||
btrfs.h)
|
||||
# guard linux/fs.h include to avoid conflict with glibc 2.36
|
||||
sed -r -i 's/^(#include <linux\/fs\.h>)/#if WANT_LINUX_FS_H\n\1\n#endif/' "$i"
|
||||
;;
|
||||
dm-ioctl.h)
|
||||
# set DM_VERSION_MINOR to 27
|
||||
sed -r -i '/^#define[[:space:]]+DM_VERSION_MINOR/ s/[0-9]+/27/' "$i"
|
||||
|
||||
Reference in New Issue
Block a user