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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113/* SPDX-License-Identifier: GPL-2.0 *//* * * Definitions for mount interface. This describes the in the kernel build * linkedlist with mounted filesystems. * * Author: Marco van Wieringen <mvw@planets.elm.net> * */#ifndef _LINUX_MOUNT_H#define _LINUX_MOUNT_H
#include <linux/types.h>#include <asm/barrier.h>
struct super_block;struct dentry;struct user_namespace;struct mnt_idmap;struct file_system_type;struct fs_context;struct file;struct path;
enum mount_flags { MNT_NOSUID = 0x01, MNT_NODEV = 0x02, MNT_NOEXEC = 0x04, MNT_NOATIME = 0x08, MNT_NODIRATIME = 0x10, MNT_RELATIME = 0x20, MNT_READONLY = 0x40, /* does the user want this to be r/o? */ MNT_NOSYMFOLLOW = 0x80,
MNT_SHRINKABLE = 0x100,
MNT_INTERNAL = 0x4000,
MNT_LOCK_ATIME = 0x040000, MNT_LOCK_NOEXEC = 0x080000, MNT_LOCK_NOSUID = 0x100000, MNT_LOCK_NODEV = 0x200000, MNT_LOCK_READONLY = 0x400000, MNT_LOCKED = 0x800000, MNT_DOOMED = 0x1000000, MNT_SYNC_UMOUNT = 0x2000000, MNT_UMOUNT = 0x8000000,
MNT_USER_SETTABLE_MASK = MNT_NOSUID | MNT_NODEV | MNT_NOEXEC | MNT_NOATIME | MNT_NODIRATIME | MNT_RELATIME | MNT_READONLY | MNT_NOSYMFOLLOW, MNT_ATIME_MASK = MNT_NOATIME | MNT_NODIRATIME | MNT_RELATIME,
MNT_INTERNAL_FLAGS = MNT_INTERNAL | MNT_DOOMED | MNT_SYNC_UMOUNT | MNT_LOCKED};
struct vfsmount { struct dentry *mnt_root; /* root of the mounted tree */ struct super_block *mnt_sb; /* pointer to superblock */ int mnt_flags; struct mnt_idmap *mnt_idmap;} __randomize_layout;
static inline struct mnt_idmap *mnt_idmap(const struct vfsmount *mnt){ /* Pairs with smp_store_release() in do_idmap_mount(). */ return READ_ONCE(mnt->mnt_idmap);}
extern int mnt_want_write(struct vfsmount *mnt);extern int mnt_want_write_file(struct file *file);extern void mnt_drop_write(struct vfsmount *mnt);extern void mnt_drop_write_file(struct file *file);extern void mntput(struct vfsmount *mnt);extern struct vfsmount *mntget(struct vfsmount *mnt);extern void mnt_make_shortterm(struct vfsmount *mnt);extern struct vfsmount *mnt_clone_internal(const struct path *path);extern bool __mnt_is_readonly(const struct vfsmount *mnt);extern bool mnt_may_suid(struct vfsmount *mnt);
extern struct vfsmount *clone_private_mount(const struct path *path);int mnt_get_write_access(struct vfsmount *mnt);void mnt_put_write_access(struct vfsmount *mnt);
extern struct vfsmount *fc_mount(struct fs_context *fc);extern struct vfsmount *fc_mount_longterm(struct fs_context *fc);extern struct vfsmount *vfs_create_mount(struct fs_context *fc);extern struct vfsmount *vfs_kern_mount(struct file_system_type *type, int flags, const char *name, void *data);
extern void mnt_set_expiry(struct vfsmount *mnt, struct list_head *expiry_list);extern void mark_mounts_for_expiry(struct list_head *mounts);
extern bool path_is_mountpoint(const struct path *path);
extern bool our_mnt(struct vfsmount *mnt);
extern struct vfsmount *kern_mount(struct file_system_type *);extern void kern_unmount(struct vfsmount *mnt);extern int may_umount_tree(struct vfsmount *);extern int may_umount(struct vfsmount *);int do_mount(const char *, const char __user *, const char *, unsigned long, void *);extern const struct path *collect_paths(const struct path *, struct path *, unsigned);extern void drop_collected_paths(const struct path *, const struct path *);extern void kern_unmount_array(struct vfsmount *mnt[], unsigned int num);
extern int cifs_root_data(char **dev, char **opts);
#endif /* _LINUX_MOUNT_H */