~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/include/linux/mount.h

Version: ~ [ linux-5.2 ] ~ [ linux-5.1.16 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.57 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.132 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.184 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.184 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.140 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.69 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-3.9.11 ] ~ [ linux-3.8.13 ] ~ [ linux-3.7.10 ] ~ [ linux-3.6.11 ] ~ [ linux-3.5.7 ] ~ [ linux-3.4.113 ] ~ [ linux-3.3.8 ] ~ [ linux-3.2.102 ] ~ [ linux-3.1.10 ] ~ [ linux-3.0.101 ] ~ [ linux-2.6.39.4 ] ~ [ linux-2.6.38.8 ] ~ [ linux-2.6.37.6 ] ~ [ linux-2.6.36.4 ] ~ [ linux-2.6.35.14 ] ~ [ linux-2.6.34.15 ] ~ [ linux-2.6.33.20 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  1 /*
  2  *
  3  * Definitions for mount interface. This describes the in the kernel build 
  4  * linkedlist with mounted filesystems.
  5  *
  6  * Author:  Marco van Wieringen <mvw@planets.elm.net>
  7  *
  8  */
  9 #ifndef _LINUX_MOUNT_H
 10 #define _LINUX_MOUNT_H
 11 
 12 #include <linux/types.h>
 13 #include <linux/list.h>
 14 #include <linux/nodemask.h>
 15 #include <linux/spinlock.h>
 16 #include <linux/seqlock.h>
 17 #include <linux/atomic.h>
 18 
 19 struct super_block;
 20 struct vfsmount;
 21 struct dentry;
 22 struct mnt_namespace;
 23 
 24 #define MNT_NOSUID      0x01
 25 #define MNT_NODEV       0x02
 26 #define MNT_NOEXEC      0x04
 27 #define MNT_NOATIME     0x08
 28 #define MNT_NODIRATIME  0x10
 29 #define MNT_RELATIME    0x20
 30 #define MNT_READONLY    0x40    /* does the user want this to be r/o? */
 31 
 32 #define MNT_SHRINKABLE  0x100
 33 #define MNT_WRITE_HOLD  0x200
 34 
 35 #define MNT_SHARED      0x1000  /* if the vfsmount is a shared mount */
 36 #define MNT_UNBINDABLE  0x2000  /* if the vfsmount is a unbindable mount */
 37 /*
 38  * MNT_SHARED_MASK is the set of flags that should be cleared when a
 39  * mount becomes shared.  Currently, this is only the flag that says a
 40  * mount cannot be bind mounted, since this is how we create a mount
 41  * that shares events with another mount.  If you add a new MNT_*
 42  * flag, consider how it interacts with shared mounts.
 43  */
 44 #define MNT_SHARED_MASK (MNT_UNBINDABLE)
 45 #define MNT_USER_SETTABLE_MASK  (MNT_NOSUID | MNT_NODEV | MNT_NOEXEC \
 46                                  | MNT_NOATIME | MNT_NODIRATIME | MNT_RELATIME \
 47                                  | MNT_READONLY)
 48 #define MNT_ATIME_MASK (MNT_NOATIME | MNT_NODIRATIME | MNT_RELATIME )
 49 
 50 #define MNT_INTERNAL_FLAGS (MNT_SHARED | MNT_WRITE_HOLD | MNT_INTERNAL | \
 51                             MNT_DOOMED | MNT_SYNC_UMOUNT | MNT_MARKED)
 52 
 53 #define MNT_INTERNAL    0x4000
 54 
 55 #define MNT_LOCK_ATIME          0x040000
 56 #define MNT_LOCK_NOEXEC         0x080000
 57 #define MNT_LOCK_NOSUID         0x100000
 58 #define MNT_LOCK_NODEV          0x200000
 59 #define MNT_LOCK_READONLY       0x400000
 60 #define MNT_LOCKED              0x800000
 61 #define MNT_DOOMED              0x1000000
 62 #define MNT_SYNC_UMOUNT         0x2000000
 63 #define MNT_MARKED              0x4000000
 64 #define MNT_UMOUNT              0x8000000
 65 
 66 struct vfsmount {
 67         struct dentry *mnt_root;        /* root of the mounted tree */
 68         struct super_block *mnt_sb;     /* pointer to superblock */
 69         int mnt_flags;
 70 };
 71 
 72 struct file; /* forward dec */
 73 struct path;
 74 
 75 extern int mnt_want_write(struct vfsmount *mnt);
 76 extern int mnt_want_write_file(struct file *file);
 77 extern int mnt_clone_write(struct vfsmount *mnt);
 78 extern void mnt_drop_write(struct vfsmount *mnt);
 79 extern void mnt_drop_write_file(struct file *file);
 80 extern void mntput(struct vfsmount *mnt);
 81 extern struct vfsmount *mntget(struct vfsmount *mnt);
 82 extern struct vfsmount *mnt_clone_internal(struct path *path);
 83 extern int __mnt_is_readonly(struct vfsmount *mnt);
 84 
 85 struct path;
 86 extern struct vfsmount *clone_private_mount(struct path *path);
 87 
 88 struct file_system_type;
 89 extern struct vfsmount *vfs_kern_mount(struct file_system_type *type,
 90                                       int flags, const char *name,
 91                                       void *data);
 92 
 93 extern void mnt_set_expiry(struct vfsmount *mnt, struct list_head *expiry_list);
 94 extern void mark_mounts_for_expiry(struct list_head *mounts);
 95 
 96 extern dev_t name_to_dev_t(const char *name);
 97 
 98 #endif /* _LINUX_MOUNT_H */
 99 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp