cregit-Linux how code gets into the kernel

Release 4.18 fs/kernfs/kernfs-internal.h

Directory: fs/kernfs
/*
 * fs/kernfs/kernfs-internal.h - kernfs internal header file
 *
 * Copyright (c) 2001-3 Patrick Mochel
 * Copyright (c) 2007 SUSE Linux Products GmbH
 * Copyright (c) 2007, 2013 Tejun Heo <teheo@suse.de>
 *
 * This file is released under the GPLv2.
 */

#ifndef __KERNFS_INTERNAL_H

#define __KERNFS_INTERNAL_H

#include <linux/lockdep.h>
#include <linux/fs.h>
#include <linux/mutex.h>
#include <linux/xattr.h>

#include <linux/kernfs.h>


struct kernfs_iattrs {
	
struct iattr		ia_iattr;
	
void			*ia_secdata;
	
u32			ia_secdata_len;

	
struct simple_xattrs	xattrs;
};

/* +1 to avoid triggering overflow warning when negating it */

#define KN_DEACTIVATED_BIAS		(INT_MIN + 1)

/* KERNFS_TYPE_MASK and types are defined in include/linux/kernfs.h */

/**
 * kernfs_root - find out the kernfs_root a kernfs_node belongs to
 * @kn: kernfs_node of interest
 *
 * Return the kernfs_root @kn belongs to.
 */

static inline struct kernfs_root *kernfs_root(struct kernfs_node *kn) { /* if parent exists, it's always a dir; otherwise, @sd is a dir */ if (kn->parent) kn = kn->parent; return kn->dir.root; }

Contributors

PersonTokensPropCommitsCommitProp
Tejun Heo34100.00%3100.00%
Total34100.00%3100.00%

/* * mount.c */ struct kernfs_super_info { struct super_block *sb; /* * The root associated with this super_block. Each super_block is * identified by the root and ns it's associated with. */ struct kernfs_root *root; /* * Each sb is associated with one namespace tag, currently the * network namespace of the task which mounted this kernfs * instance. If multiple tags become necessary, make the following * an array and compare kernfs_node tag against every entry. */ const void *ns; /* anchored at kernfs_root->supers, protected by kernfs_mutex */ struct list_head node; }; #define kernfs_info(SB) ((struct kernfs_super_info *)(SB->s_fs_info))
static inline struct kernfs_node *kernfs_dentry_node(struct dentry *dentry) { if (d_really_is_negative(dentry)) return NULL; return d_inode(dentry)->i_private; }

Contributors

PersonTokensPropCommitsCommitProp
Shaohua Li32100.00%1100.00%
Total32100.00%1100.00%

extern const struct super_operations kernfs_sops; extern struct kmem_cache *kernfs_node_cache; /* * inode.c */ extern const struct xattr_handler *kernfs_xattr_handlers[]; void kernfs_evict_inode(struct inode *inode); int kernfs_iop_permission(struct inode *inode, int mask); int kernfs_iop_setattr(struct dentry *dentry, struct iattr *iattr); int kernfs_iop_getattr(const struct path *path, struct kstat *stat, u32 request_mask, unsigned int query_flags); ssize_t kernfs_iop_listxattr(struct dentry *dentry, char *buf, size_t size); /* * dir.c */ extern struct mutex kernfs_mutex; extern const struct dentry_operations kernfs_dops; extern const struct file_operations kernfs_dir_fops; extern const struct inode_operations kernfs_dir_iops; struct kernfs_node *kernfs_get_active(struct kernfs_node *kn); void kernfs_put_active(struct kernfs_node *kn); int kernfs_add_one(struct kernfs_node *kn); struct kernfs_node *kernfs_new_node(struct kernfs_node *parent, const char *name, umode_t mode, unsigned flags); struct kernfs_node *kernfs_find_and_get_node_by_ino(struct kernfs_root *root, unsigned int ino); /* * file.c */ extern const struct file_operations kernfs_file_fops; void kernfs_drain_open_files(struct kernfs_node *kn); /* * symlink.c */ extern const struct inode_operations kernfs_symlink_iops; #endif /* __KERNFS_INTERNAL_H */

Overall Contributors

PersonTokensPropCommitsCommitProp
Tejun Heo28980.28%2080.00%
Shaohua Li4713.06%28.00%
David Howells102.78%14.00%
Andreas Gruenbacher82.22%14.00%
Li Zefan61.67%14.00%
Total360100.00%25100.00%
Directory: fs/kernfs
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