cregit-Linux how code gets into the kernel

Release 4.12 include/linux/xattr.h

Directory: include/linux
/*
  File: linux/xattr.h

  Extended attributes handling.

  Copyright (C) 2001 by Andreas Gruenbacher <a.gruenbacher@computer.org>
  Copyright (c) 2001-2002 Silicon Graphics, Inc.  All Rights Reserved.
  Copyright (c) 2004 Red Hat, Inc., James Morris <jmorris@redhat.com>
*/
#ifndef _LINUX_XATTR_H

#define _LINUX_XATTR_H


#include <linux/slab.h>
#include <linux/types.h>
#include <linux/spinlock.h>
#include <uapi/linux/xattr.h>

struct inode;
struct dentry;

/*
 * struct xattr_handler: When @name is set, match attributes with exactly that
 * name.  When @prefix is set instead, match attributes with that prefix and
 * with a non-empty suffix.
 */

struct xattr_handler {
	
const char *name;
	
const char *prefix;
	
int flags;      /* fs private flags */
	
bool (*list)(struct dentry *dentry);
	
int (*get)(const struct xattr_handler *, struct dentry *dentry,
		   struct inode *inode, const char *name, void *buffer,
		   size_t size);
	
int (*set)(const struct xattr_handler *, struct dentry *dentry,
		   struct inode *inode, const char *name, const void *buffer,
		   size_t size, int flags);
};

const char *xattr_full_name(const struct xattr_handler *, const char *);


struct xattr {
	
const char *name;
	
void *value;
	
size_t value_len;
};

ssize_t xattr_getsecurity(struct inode *, const char *, void *, size_t);
ssize_t __vfs_getxattr(struct dentry *, struct inode *, const char *, void *, size_t);
ssize_t vfs_getxattr(struct dentry *, const char *, void *, size_t);
ssize_t vfs_listxattr(struct dentry *d, char *list, size_t size);
int __vfs_setxattr(struct dentry *, struct inode *, const char *, const void *, size_t, int);
int __vfs_setxattr_noperm(struct dentry *, const char *, const void *, size_t, int);
int vfs_setxattr(struct dentry *, const char *, const void *, size_t, int);
int __vfs_removexattr(struct dentry *, const char *);
int vfs_removexattr(struct dentry *, const char *);

ssize_t generic_listxattr(struct dentry *dentry, char *buffer, size_t buffer_size);
ssize_t vfs_getxattr_alloc(struct dentry *dentry, const char *name,
			   char **xattr_value, size_t size, gfp_t flags);


static inline const char *xattr_prefix(const struct xattr_handler *handler) { return handler->prefix ?: handler->name; }

Contributors

PersonTokensPropCommitsCommitProp
Andreas Gruenbacher25100.00%1100.00%
Total25100.00%1100.00%

struct simple_xattrs { struct list_head head; spinlock_t lock; }; struct simple_xattr { struct list_head list; char *name; size_t size; char value[0]; }; /* * initialize the simple_xattrs structure */
static inline void simple_xattrs_init(struct simple_xattrs *xattrs) { INIT_LIST_HEAD(&xattrs->head); spin_lock_init(&xattrs->lock); }

Contributors

PersonTokensPropCommitsCommitProp
Aristeu Sergio Rozanski Filho28100.00%1100.00%
Total28100.00%1100.00%

/* * free all the xattrs */
static inline void simple_xattrs_free(struct simple_xattrs *xattrs) { struct simple_xattr *xattr, *node; list_for_each_entry_safe(xattr, node, &xattrs->head, list) { kfree(xattr->name); kfree(xattr); } }

Contributors

PersonTokensPropCommitsCommitProp
Aristeu Sergio Rozanski Filho44100.00%1100.00%
Total44100.00%1100.00%

struct simple_xattr *simple_xattr_alloc(const void *value, size_t size); int simple_xattr_get(struct simple_xattrs *xattrs, const char *name, void *buffer, size_t size); int simple_xattr_set(struct simple_xattrs *xattrs, const char *name, const void *value, size_t size, int flags); ssize_t simple_xattr_list(struct inode *inode, struct simple_xattrs *xattrs, char *buffer, size_t size); void simple_xattr_list_add(struct simple_xattrs *xattrs, struct simple_xattr *new_xattr); #endif /* _LINUX_XATTR_H */

Overall Contributors

PersonTokensPropCommitsCommitProp
Aristeu Sergio Rozanski Filho20434.46%14.35%
Andreas Gruenbacher12020.27%521.74%
James Morris8314.02%14.35%
Christoph Hellwig549.12%28.70%
Mimi Zohar416.93%28.70%
David P. Quigley376.25%28.70%
Bill Nottingham162.70%14.35%
Al Viro101.69%28.70%
Linus Torvalds91.52%14.35%
David Howells71.18%28.70%
Adrian Bunk61.01%14.35%
Eric Paris30.51%14.35%
Tetsuo Handa10.17%14.35%
Stephen Hemminger10.17%14.35%
Total592100.00%23100.00%
Directory: include/linux
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