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/usr/include/x86_64-linux-gnu/sys

Name	Size	Mode	Actions
platform/	-	0755	rm
acct.h	3383	0644	edit dl rm
auxv.h	1260	0644	edit dl rm
bitypes.h	86	0644	edit dl rm
cdefs.h	34638	0644	edit dl rm
debugreg.h	3576	0644	edit dl rm
dir.h	922	0644	edit dl rm
elf.h	1024	0644	edit dl rm
epoll.h	5670	0644	edit dl rm
errno.h	19	0644	edit dl rm
eventfd.h	1400	0644	edit dl rm
fanotify.h	1292	0644	edit dl rm
fcntl.h	19	0644	edit dl rm
file.h	1675	0644	edit dl rm
fsuid.h	1188	0644	edit dl rm
gmon.h	6230	0644	edit dl rm
gmon_out.h	2577	0644	edit dl rm
inotify.h	3901	0644	edit dl rm
io.h	5086	0644	edit dl rm
ioctl.h	2032	0644	edit dl rm
ipc.h	1462	0644	edit dl rm
kd.h	1112	0644	edit dl rm
klog.h	1204	0644	edit dl rm
mman.h	5669	0644	edit dl rm
mount.h	12054	0644	edit dl rm
msg.h	2628	0644	edit dl rm
mtio.h	11111	0644	edit dl rm
param.h	3149	0644	edit dl rm
pci.h	923	0644	edit dl rm
perm.h	1127	0644	edit dl rm
personality.h	2723	0644	edit dl rm
pidfd.h	2805	0644	edit dl rm
poll.h	3030	0644	edit dl rm
prctl.h	1800	0644	edit dl rm
procfs.h	4338	0644	edit dl rm
profil.h	1959	0644	edit dl rm
ptrace.h	6680	0644	edit dl rm
queue.h	19539	0644	edit dl rm
quota.h	5173	0644	edit dl rm
random.h	1584	0644	edit dl rm
raw.h	1182	0644	edit dl rm
reboot.h	1633	0644	edit dl rm
reg.h	1827	0644	edit dl rm
resource.h	4039	0644	edit dl rm
rseq.h	7092	0644	edit dl rm
select.h	5049	0644	edit dl rm
sem.h	2670	0644	edit dl rm
sendfile.h	1806	0644	edit dl rm
shm.h	2136	0644	edit dl rm
signal.h	20	0644	edit dl rm
signalfd.h	1714	0644	edit dl rm
single_threaded.h	1182	0644	edit dl rm
socket.h	12417	0644	edit dl rm
socketvar.h	141	0644	edit dl rm
soundcard.h	29	0644	edit dl rm
stat.h	13793	0644	edit dl rm
statfs.h	2094	0644	edit dl rm
statvfs.h	2821	0644	edit dl rm
swap.h	1593	0644	edit dl rm
syscall.h	1256	0644	edit dl rm
sysinfo.h	1518	0644	edit dl rm
syslog.h	7840	0644	edit dl rm
sysmacros.h	2103	0644	edit dl rm
termios.h	74	0644	edit dl rm
time.h	9164	0644	edit dl rm
timeb.h	1155	0644	edit dl rm
timerfd.h	2593	0644	edit dl rm
times.h	1597	0644	edit dl rm
timex.h	2972	0644	edit dl rm
ttychars.h	2499	0644	edit dl rm
ttydefaults.h	3568	0644	edit dl rm
types.h	5713	0644	edit dl rm
ucontext.h	5842	0644	edit dl rm
uio.h	6796	0644	edit dl rm
un.h	1498	0644	edit dl rm
unistd.h	20	0644	edit dl rm
user.h	5208	0644	edit dl rm
utsname.h	2481	0644	edit dl rm
vfs.h	161	0644	edit dl rm
vlimit.h	1880	0644	edit dl rm
vm86.h	1199	0644	edit dl rm
vt.h	22	0644	edit dl rm
wait.h	6116	0644	edit dl rm
xattr.h	4627	0644	edit dl rm

Edit: /usr/include/x86_64-linux-gnu/sys/mount.h (12054B)

/* Header file for mounting/unmount Linux filesystems.
   Copyright (C) 1996-2025 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <https://www.gnu.org/licenses/>.  */

/* This is taken from /usr/include/linux/fs.h.  */

#ifndef _SYS_MOUNT_H
#define _SYS_MOUNT_H	1

#include <fcntl.h>
#include <features.h>
#include <stdint.h>
#include <stddef.h>
#include <sys/ioctl.h>

#ifdef __has_include
# if __has_include ("linux/mount.h")
#  include "linux/mount.h"
# endif
#endif

#define BLOCK_SIZE_BITS	10
#define BLOCK_SIZE	(1<<BLOCK_SIZE_BITS)

/* These are the fs-independent mount-flags: up to 16 flags are
   supported  */
enum
{
#undef MS_RDONLY
  MS_RDONLY = 1,		/* Mount read-only.  */
#define MS_RDONLY	MS_RDONLY
#undef MS_NOSUID
  MS_NOSUID = 2,		/* Ignore suid and sgid bits.  */
#define MS_NOSUID	MS_NOSUID
#undef MS_NODEV
  MS_NODEV = 4,			/* Disallow access to device special files.  */
#define MS_NODEV	MS_NODEV
#undef MS_NOEXEC
  MS_NOEXEC = 8,		/* Disallow program execution.  */
#define MS_NOEXEC	MS_NOEXEC
#undef MS_SYNCHRONOUS
  MS_SYNCHRONOUS = 16,		/* Writes are synced at once.  */
#define MS_SYNCHRONOUS	MS_SYNCHRONOUS
#undef MS_REMOUNT
  MS_REMOUNT = 32,		/* Alter flags of a mounted FS.  */
#define MS_REMOUNT	MS_REMOUNT
#undef MS_MANDLOCK
  MS_MANDLOCK = 64,		/* Allow mandatory locks on an FS.  */
#define MS_MANDLOCK	MS_MANDLOCK
#undef MS_DIRSYNC
  MS_DIRSYNC = 128,		/* Directory modifications are synchronous.  */
#define MS_DIRSYNC	MS_DIRSYNC
#undef MS_NOSYMFOLLOW
  MS_NOSYMFOLLOW = 256,		/* Do not follow symlinks.  */
#define MS_NOSYMFOLLOW	MS_NOSYMFOLLOW
#undef MS_NOATIME
  MS_NOATIME = 1024,		/* Do not update access times.  */
#define MS_NOATIME	MS_NOATIME
#undef MS_NODIRATIME
  MS_NODIRATIME = 2048,		/* Do not update directory access times.  */
#define MS_NODIRATIME	MS_NODIRATIME
#undef MS_BIND
  MS_BIND = 4096,		/* Bind directory at different place.  */
#define MS_BIND		MS_BIND
#undef MS_MOVE
  MS_MOVE = 8192,
#define MS_MOVE		MS_MOVE
#undef MS_REC
  MS_REC = 16384,
#define MS_REC		MS_REC
#undef MS_SILENT
  MS_SILENT = 32768,
#define MS_SILENT	MS_SILENT
#undef MS_POSIXACL
  MS_POSIXACL = 1 << 16,	/* VFS does not apply the umask.  */
#define MS_POSIXACL	MS_POSIXACL
#undef MS_UNBINDABLE
  MS_UNBINDABLE = 1 << 17,	/* Change to unbindable.  */
#define MS_UNBINDABLE	MS_UNBINDABLE
#undef MS_PRIVATE
  MS_PRIVATE = 1 << 18,		/* Change to private.  */
#define MS_PRIVATE	MS_PRIVATE
#undef MS_SLAVE
  MS_SLAVE = 1 << 19,		/* Change to slave.  */
#define MS_SLAVE	MS_SLAVE
#undef MS_SHARED
  MS_SHARED = 1 << 20,		/* Change to shared.  */
#define MS_SHARED	MS_SHARED
#undef MS_RELATIME
  MS_RELATIME = 1 << 21,	/* Update atime relative to mtime/ctime.  */
#define MS_RELATIME	MS_RELATIME
#undef MS_KERNMOUNT
  MS_KERNMOUNT = 1 << 22,	/* This is a kern_mount call.  */
#define MS_KERNMOUNT	MS_KERNMOUNT
#undef MS_I_VERSION
  MS_I_VERSION =  1 << 23,	/* Update inode I_version field.  */
#define MS_I_VERSION	MS_I_VERSION
#undef MS_STRICTATIME
  MS_STRICTATIME = 1 << 24,	/* Always perform atime updates.  */
#define MS_STRICTATIME	MS_STRICTATIME
#undef MS_LAZYTIME
  MS_LAZYTIME = 1 << 25,	/* Update the on-disk [acm]times lazily.  */
#define MS_LAZYTIME	MS_LAZYTIME
#undef MS_ACTIVE
  MS_ACTIVE = 1 << 30,
#define MS_ACTIVE	MS_ACTIVE
#undef MS_NOUSER
  MS_NOUSER = 1 << 31
#define MS_NOUSER	MS_NOUSER
};

/* Flags that can be altered by MS_REMOUNT  */
#undef MS_RMT_MASK
#define MS_RMT_MASK (MS_RDONLY|MS_SYNCHRONOUS|MS_MANDLOCK|MS_I_VERSION \
		     |MS_LAZYTIME)

/* Magic mount flag number. Has to be or-ed to the flag values.  */

#undef MS_MGC_VAL
#define MS_MGC_VAL 0xc0ed0000	/* Magic flag number to indicate "new" flags */
#define MS_MGC_MSK 0xffff0000	/* Magic flag number mask */

/* 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.  */

#undef BLKROSET
#define BLKROSET   _IO(0x12, 93) /* Set device read-only (0 = read-write).  */
#undef BLKROGET
#define BLKROGET   _IO(0x12, 94) /* Get read-only status (0 = read_write).  */
#undef BLKRRPART
#define BLKRRPART  _IO(0x12, 95) /* Re-read partition table.  */
#undef BLKGETSIZE
#define BLKGETSIZE _IO(0x12, 96) /* Return device size.  */
#undef BLKFLSBUF
#define BLKFLSBUF  _IO(0x12, 97) /* Flush buffer cache.  */
#undef BLKRASET
#define BLKRASET   _IO(0x12, 98) /* Set read ahead for block device.  */
#undef BLKRAGET
#define BLKRAGET   _IO(0x12, 99) /* Get current read ahead setting.  */
#undef BLKFRASET
#define BLKFRASET  _IO(0x12,100) /* Set filesystem read-ahead.  */
#undef BLKFRAGET
#define BLKFRAGET  _IO(0x12,101) /* Get filesystem read-ahead.  */
#undef BLKSECTSET
#define BLKSECTSET _IO(0x12,102) /* Set max sectors per request.  */
#undef BLKSECTGET
#define BLKSECTGET _IO(0x12,103) /* Get max sectors per request.  */
#undef BLKSSZGET
#define BLKSSZGET  _IO(0x12,104) /* Get block device sector size.  */
#undef BLKBSZGET
#define BLKBSZGET  _IOR(0x12,112,size_t)
#undef BLKBSZSET
#define BLKBSZSET  _IOW(0x12,113,size_t)
#undef BLKGETSIZE64
#define BLKGETSIZE64 _IOR(0x12,114,size_t) /* return device size.  */

/* Possible value for FLAGS parameter of `umount2'.  */
enum
{
  MNT_FORCE = 1,		/* Force unmounting.  */
#define MNT_FORCE MNT_FORCE
  MNT_DETACH = 2,		/* Just detach from the tree.  */
#define MNT_DETACH MNT_DETACH
  MNT_EXPIRE = 4,		/* Mark for expiry.  */
#define MNT_EXPIRE MNT_EXPIRE
  UMOUNT_NOFOLLOW = 8		/* Don't follow symlink on umount.  */
#define UMOUNT_NOFOLLOW UMOUNT_NOFOLLOW
};

/* fsmount flags.  */
#define FSMOUNT_CLOEXEC         0x00000001

/* mount attributes used on fsmount.  */
#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.  */

#ifndef MOUNT_ATTR_SIZE_VER0
/* For mount_setattr.  */
struct mount_attr
{
  uint64_t attr_set;
  uint64_t attr_clr;
  uint64_t propagation;
  uint64_t userns_fd;
};
#endif

#define MOUNT_ATTR_SIZE_VER0    32 /* sizeof first published struct */

/* 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 */

/* fspick flags.  */
#define FSPICK_CLOEXEC          0x00000001
#define FSPICK_SYMLINK_NOFOLLOW 0x00000002
#define FSPICK_NO_AUTOMOUNT     0x00000004
#define FSPICK_EMPTY_PATH       0x00000008

#ifndef FSOPEN_CLOEXEC
/* The type of fsconfig call made.   */
enum fsconfig_command
{
  FSCONFIG_SET_FLAG       = 0,    /* Set parameter, supplying no value */
# define FSCONFIG_SET_FLAG FSCONFIG_SET_FLAG
  FSCONFIG_SET_STRING     = 1,    /* Set parameter, supplying a string value */
# define FSCONFIG_SET_STRING FSCONFIG_SET_STRING
  FSCONFIG_SET_BINARY     = 2,    /* Set parameter, supplying a binary blob value */
# define FSCONFIG_SET_BINARY FSCONFIG_SET_BINARY
  FSCONFIG_SET_PATH       = 3,    /* Set parameter, supplying an object by path */
# define FSCONFIG_SET_PATH FSCONFIG_SET_PATH
  FSCONFIG_SET_PATH_EMPTY = 4,    /* Set parameter, supplying an object by (empty) path */
# define FSCONFIG_SET_PATH_EMPTY FSCONFIG_SET_PATH_EMPTY
  FSCONFIG_SET_FD         = 5,    /* Set parameter, supplying an object by fd */
# define FSCONFIG_SET_FD FSCONFIG_SET_FD
  FSCONFIG_CMD_CREATE     = 6,    /* Invoke superblock creation */
# define FSCONFIG_CMD_CREATE FSCONFIG_CMD_CREATE
  FSCONFIG_CMD_RECONFIGURE = 7,   /* Invoke superblock reconfiguration */
# define FSCONFIG_CMD_RECONFIGURE FSCONFIG_CMD_RECONFIGURE
  FSCONFIG_CMD_CREATE_EXCL = 8,    /* Create new superblock, fail if reusing existing superblock */
# define FSCONFIG_CMD_CREATE_EXCL FSCONFIG_CMD_CREATE_EXCL
};
#endif

/* fsopen flags.  */
#define FSOPEN_CLOEXEC          0x00000001

/* 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() */

__BEGIN_DECLS

/* Mount a filesystem.  */
extern int mount (const char *__special_file, const char *__dir,
		  const char *__fstype, unsigned long int __rwflag,
		  const void *__data) __THROW;

/* Unmount a filesystem.  */
extern int umount (const char *__special_file) __THROW;

/* Unmount a filesystem.  Force unmounting if FLAGS is set to MNT_FORCE.  */
extern int umount2 (const char *__special_file, int __flags) __THROW;

/* Open the filesystem referenced by FS_NAME so it can be configured for
   mouting.  */
extern int fsopen (const char *__fs_name, unsigned int __flags) __THROW;

/* Create a mount representation for the FD created by fsopen using
   FLAGS with ATTR_FLAGS describing how the mount is to be performed.  */
extern int fsmount (int __fd, unsigned int __flags,
		    unsigned int __ms_flags) __THROW;

/* Add the mounted FROM_DFD referenced by FROM_PATHNAME filesystem returned
   by fsmount in the hierarchy in the place TO_DFD reference by TO_PATHNAME
   using FLAGS.  */
extern int move_mount (int __from_dfd, const char *__from_pathname,
		       int __to_dfd, const char *__to_pathname,
		       unsigned int flags) __THROW;

/* Set parameters and trigger CMD action on the FD context.  KEY, VALUE,
   and AUX are used depending ng of the CMD.  */
extern int fsconfig (int __fd, unsigned int __cmd, const char *__key,
		     const void *__value, int __aux) __THROW;

/* Equivalent of fopen for an existing mount point.  */
extern int fspick (int __dfd, const char *__path, unsigned int __flags)
  __THROW;

/* Open the mount point FILENAME in directory DFD using FLAGS.  */
extern int open_tree (int __dfd, const char *__filename, unsigned int __flags)
  __THROW;

/* Change the mount properties of the mount or an entire mount tree.  If
   PATH is a relative pathname, then it is interpreted relative to the
   directory referred to by the file descriptor dirfd.  Otherwise if DFD is
   the special value AT_FDCWD then PATH is interpreted relative to the current
   working directory of the calling process.  */
extern int mount_setattr (int __dfd, const char *__path, unsigned int __flags,
			  struct mount_attr *__uattr, size_t __usize)
  __THROW;

__END_DECLS

#endif /* _SYS_MOUNT_H */

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