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

TOMOYO Linux Cross Reference
Linux/fs/kernfs/kernfs-internal.h

Version: ~ [ linux-5.16-rc3 ] ~ [ linux-5.15.5 ] ~ [ linux-5.14.21 ] ~ [ linux-5.13.19 ] ~ [ linux-5.12.19 ] ~ [ linux-5.11.22 ] ~ [ linux-5.10.82 ] ~ [ linux-5.9.16 ] ~ [ linux-5.8.18 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.162 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.218 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.256 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.291 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.293 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.18.140 ] ~ [ linux-3.16.85 ] ~ [ linux-3.14.79 ] ~ [ linux-3.12.74 ] ~ [ linux-3.10.108 ] ~ [ 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  * fs/kernfs/kernfs-internal.h - kernfs internal header file
  3  *
  4  * Copyright (c) 2001-3 Patrick Mochel
  5  * Copyright (c) 2007 SUSE Linux Products GmbH
  6  * Copyright (c) 2007, 2013 Tejun Heo <teheo@suse.de>
  7  *
  8  * This file is released under the GPLv2.
  9  */
 10 
 11 #ifndef __KERNFS_INTERNAL_H
 12 #define __KERNFS_INTERNAL_H
 13 
 14 #include <linux/lockdep.h>
 15 #include <linux/fs.h>
 16 #include <linux/mutex.h>
 17 #include <linux/xattr.h>
 18 
 19 #include <linux/kernfs.h>
 20 
 21 struct kernfs_iattrs {
 22         struct iattr            ia_iattr;
 23         void                    *ia_secdata;
 24         u32                     ia_secdata_len;
 25 
 26         struct simple_xattrs    xattrs;
 27 };
 28 
 29 /* +1 to avoid triggering overflow warning when negating it */
 30 #define KN_DEACTIVATED_BIAS             (INT_MIN + 1)
 31 
 32 /* KERNFS_TYPE_MASK and types are defined in include/linux/kernfs.h */
 33 
 34 /**
 35  * kernfs_root - find out the kernfs_root a kernfs_node belongs to
 36  * @kn: kernfs_node of interest
 37  *
 38  * Return the kernfs_root @kn belongs to.
 39  */
 40 static inline struct kernfs_root *kernfs_root(struct kernfs_node *kn)
 41 {
 42         /* if parent exists, it's always a dir; otherwise, @sd is a dir */
 43         if (kn->parent)
 44                 kn = kn->parent;
 45         return kn->dir.root;
 46 }
 47 
 48 /*
 49  * mount.c
 50  */
 51 struct kernfs_super_info {
 52         struct super_block      *sb;
 53 
 54         /*
 55          * The root associated with this super_block.  Each super_block is
 56          * identified by the root and ns it's associated with.
 57          */
 58         struct kernfs_root      *root;
 59 
 60         /*
 61          * Each sb is associated with one namespace tag, currently the
 62          * network namespace of the task which mounted this kernfs
 63          * instance.  If multiple tags become necessary, make the following
 64          * an array and compare kernfs_node tag against every entry.
 65          */
 66         const void              *ns;
 67 
 68         /* anchored at kernfs_root->supers, protected by kernfs_mutex */
 69         struct list_head        node;
 70 };
 71 #define kernfs_info(SB) ((struct kernfs_super_info *)(SB->s_fs_info))
 72 
 73 static inline struct kernfs_node *kernfs_dentry_node(struct dentry *dentry)
 74 {
 75         if (d_really_is_negative(dentry))
 76                 return NULL;
 77         return d_inode(dentry)->i_private;
 78 }
 79 
 80 extern const struct super_operations kernfs_sops;
 81 extern struct kmem_cache *kernfs_node_cache;
 82 
 83 /*
 84  * inode.c
 85  */
 86 extern const struct xattr_handler *kernfs_xattr_handlers[];
 87 void kernfs_evict_inode(struct inode *inode);
 88 int kernfs_iop_permission(struct inode *inode, int mask);
 89 int kernfs_iop_setattr(struct dentry *dentry, struct iattr *iattr);
 90 int kernfs_iop_getattr(const struct path *path, struct kstat *stat,
 91                        u32 request_mask, unsigned int query_flags);
 92 ssize_t kernfs_iop_listxattr(struct dentry *dentry, char *buf, size_t size);
 93 int __kernfs_setattr(struct kernfs_node *kn, const struct iattr *iattr);
 94 
 95 /*
 96  * dir.c
 97  */
 98 extern struct mutex kernfs_mutex;
 99 extern const struct dentry_operations kernfs_dops;
100 extern const struct file_operations kernfs_dir_fops;
101 extern const struct inode_operations kernfs_dir_iops;
102 
103 struct kernfs_node *kernfs_get_active(struct kernfs_node *kn);
104 void kernfs_put_active(struct kernfs_node *kn);
105 int kernfs_add_one(struct kernfs_node *kn);
106 struct kernfs_node *kernfs_new_node(struct kernfs_node *parent,
107                                     const char *name, umode_t mode,
108                                     kuid_t uid, kgid_t gid,
109                                     unsigned flags);
110 struct kernfs_node *kernfs_find_and_get_node_by_ino(struct kernfs_root *root,
111                                                     unsigned int ino);
112 
113 /*
114  * file.c
115  */
116 extern const struct file_operations kernfs_file_fops;
117 
118 void kernfs_drain_open_files(struct kernfs_node *kn);
119 
120 /*
121  * symlink.c
122  */
123 extern const struct inode_operations kernfs_symlink_iops;
124 
125 #endif  /* __KERNFS_INTERNAL_H */
126 

~ [ 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