xattr.c File Reference

#include <linux/fs.h>
#include <linux/slab.h>
#include <linux/file.h>
#include <linux/xattr.h>
#include <linux/mount.h>
#include <linux/namei.h>
#include <linux/security.h>
#include <linux/evm.h>
#include <linux/syscalls.h>
#include <linux/export.h>
#include <linux/fsnotify.h>
#include <linux/audit.h>
#include <linux/vmalloc.h>
#include <linux/posix_acl_xattr.h>
#include <asm/uaccess.h>

Go to the source code of this file.

Functions
: name of the new extended attribute
simple_xattr_set - xattr SET operation for in-memory/pseudo filesystems : target simple_xattr list : value of the new xattr. If NULL, will remove the attribute : size of the new xattr : XATTR_{CREATE|REPLACE} XATTR_CREATE is set, the xattr shouldn't exist already; otherwise fails with -EEXIST. If XATTR_REPLACE is set, the xattr should exist; otherwise, fails with -ENODATA. Returns 0 on success, -errno on failure.
int	simple_xattr_set (struct simple_xattrs *xattrs, const char *name, const void *value, size_t size, int flags)
int	simple_xattr_remove (struct simple_xattrs *xattrs, const char *name)
ssize_t	simple_xattr_list (struct simple_xattrs *xattrs, char *buffer, size_t size)
void	simple_xattr_list_add (struct simple_xattrs *xattrs, struct simple_xattr *new_xattr)

to
- size of - flags to pass into filesystem operations returns the result of the internal setxattr or setsecurity operations. This function requires the caller to lock the inode's i_mutex before it is executed. It also assumes that the caller will make the appropriate permission checks.
#define	for_each_xattr_handler(handlers, handler)
int	__vfs_setxattr_noperm (struct dentry *dentry, const char *name, const void *value, size_t size, int flags)
int	vfs_setxattr (struct dentry *dentry, const char *name, const void *value, size_t size, int flags)
	EXPORT_SYMBOL_GPL (vfs_setxattr)
ssize_t	xattr_getsecurity (struct inode *inode, const char *name, void *value, size_t size)
	EXPORT_SYMBOL_GPL (xattr_getsecurity)
ssize_t	vfs_getxattr_alloc (struct dentry *dentry, const char *name, char **xattr_value, size_t xattr_size, gfp_t flags)
int	vfs_xattr_cmp (struct dentry *dentry, const char *xattr_name, const char *value, size_t size, gfp_t flags)
ssize_t	vfs_getxattr (struct dentry *dentry, const char *name, void *value, size_t size)
	EXPORT_SYMBOL_GPL (vfs_getxattr)
ssize_t	vfs_listxattr (struct dentry *d, char *list, size_t size)
	EXPORT_SYMBOL_GPL (vfs_listxattr)
int	vfs_removexattr (struct dentry *dentry, const char *name)
	EXPORT_SYMBOL_GPL (vfs_removexattr)
	SYSCALL_DEFINE5 (setxattr, const char __user *, pathname, const char __user *, name, const void __user *, value, size_t, size, int, flags)
	SYSCALL_DEFINE5 (lsetxattr, const char __user *, pathname, const char __user *, name, const void __user *, value, size_t, size, int, flags)
	SYSCALL_DEFINE5 (fsetxattr, int, fd, const char __user *, name, const void __user *, value, size_t, size, int, flags)
	SYSCALL_DEFINE4 (getxattr, const char __user *, pathname, const char __user *, name, void __user *, value, size_t, size)
	SYSCALL_DEFINE4 (lgetxattr, const char __user *, pathname, const char __user *, name, void __user *, value, size_t, size)
	SYSCALL_DEFINE4 (fgetxattr, int, fd, const char __user *, name, void __user *, value, size_t, size)
	SYSCALL_DEFINE3 (listxattr, const char __user *, pathname, char __user *, list, size_t, size)
	SYSCALL_DEFINE3 (llistxattr, const char __user *, pathname, char __user *, list, size_t, size)
	SYSCALL_DEFINE3 (flistxattr, int, fd, char __user *, list, size_t, size)
	SYSCALL_DEFINE2 (removexattr, const char __user *, pathname, const char __user *, name)
	SYSCALL_DEFINE2 (lremovexattr, const char __user *, pathname, const char __user *, name)
	SYSCALL_DEFINE2 (fremovexattr, int, fd, const char __user *, name)
ssize_t	generic_getxattr (struct dentry *dentry, const char *name, void *buffer, size_t size)
ssize_t	generic_listxattr (struct dentry *dentry, char *buffer, size_t buffer_size)
int	generic_setxattr (struct dentry *dentry, const char *name, const void *value, size_t size, int flags)
int	generic_removexattr (struct dentry *dentry, const char *name)
	EXPORT_SYMBOL (generic_getxattr)
	EXPORT_SYMBOL (generic_listxattr)
	EXPORT_SYMBOL (generic_setxattr)
	EXPORT_SYMBOL (generic_removexattr)
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)

Macro Definition Documentation

#define for_each_xattr_handler	(		handlers,
			handler
	)

Value:

for ((handler) = *(handlers)++;         \
            (handler) != NULL;          \
            (handler) = *(handlers)++)

Definition at line 688 of file xattr.c.

Function Documentation

int __vfs_setxattr_noperm	(	struct dentry *	dentry,
		const char *	name,
		const void *	value,
		size_t	size,
		int	flags
	)

Definition at line 92 of file xattr.c.

EXPORT_SYMBOL

(

generic_getxattr

)

EXPORT_SYMBOL

(

generic_listxattr

)

EXPORT_SYMBOL

(

generic_setxattr

)

EXPORT_SYMBOL

(

generic_removexattr

)

EXPORT_SYMBOL_GPL

(

vfs_setxattr

)

EXPORT_SYMBOL_GPL

(

xattr_getsecurity

)

EXPORT_SYMBOL_GPL

(

vfs_getxattr

)

EXPORT_SYMBOL_GPL

(

vfs_listxattr

)

EXPORT_SYMBOL_GPL

(

vfs_removexattr

)

ssize_t generic_getxattr	(	struct dentry *	dentry,
		const char *	name,
		void *	buffer,
		size_t	size
	)

Definition at line 718 of file xattr.c.

ssize_t generic_listxattr	(	struct dentry *	dentry,
		char *	buffer,
		size_t	buffer_size
	)

Definition at line 733 of file xattr.c.

int generic_removexattr	(	struct dentry *	dentry,
		const char *	name
	)

Definition at line 780 of file xattr.c.

int generic_setxattr	(	struct dentry *	dentry,
		const char *	name,
		const void *	value,
		size_t	size,
		int	flags
	)

Definition at line 763 of file xattr.c.

struct simple_xattr* simple_xattr_alloc ( const void *  value, size_t  size  )

read

Definition at line 799 of file xattr.c.

int simple_xattr_get	(	struct simple_xattrs *	xattrs,
		const char *	name,
		void *	buffer,
		size_t	size
	)

Definition at line 821 of file xattr.c.

ssize_t simple_xattr_list	(	struct simple_xattrs *	xattrs,
		char *	buffer,
		size_t	size
	)

Definition at line 934 of file xattr.c.

void simple_xattr_list_add	(	struct simple_xattrs *	xattrs,
		struct simple_xattr *	new_xattr
	)

Definition at line 968 of file xattr.c.

int simple_xattr_remove	(	struct simple_xattrs *	xattrs,
		const char *	name
	)

Definition at line 921 of file xattr.c.

int simple_xattr_set	(	struct simple_xattrs *	xattrs,
		const char *	name,
		const void *	value,
		size_t	size,
		int	flags
	)

Definition at line 910 of file xattr.c.

SYSCALL_DEFINE2	(	removexattr	,
		const char __user *	,
		pathname	,
		const char __user *	,
		name
	)

Definition at line 613 of file xattr.c.

SYSCALL_DEFINE2	(	lremovexattr	,
		const char __user *	,
		pathname	,
		const char __user *	,
		name
	)

Definition at line 631 of file xattr.c.

SYSCALL_DEFINE2	(	fremovexattr	,
		int	,
		fd	,
		const char __user *	,
		name
	)

Definition at line 649 of file xattr.c.

SYSCALL_DEFINE3	(	listxattr	,
		const char __user *	,
		pathname	,
		char __user *	,
		list	,
		size_t	,
		size
	)

Definition at line 554 of file xattr.c.

SYSCALL_DEFINE3	(	llistxattr	,
		const char __user *	,
		pathname	,
		char __user *	,
		list	,
		size_t	,
		size
	)

Definition at line 568 of file xattr.c.

SYSCALL_DEFINE3	(	flistxattr	,
		int	,
		fd	,
		char __user *	,
		list	,
		size_t	,
		size
	)

Definition at line 582 of file xattr.c.

SYSCALL_DEFINE4	(	getxattr	,
		const char __user *	,
		pathname	,
		const char __user *	,
		name	,
		void __user *	,
		value	,
		size_t	,
		size
	)

Definition at line 474 of file xattr.c.

SYSCALL_DEFINE4	(	lgetxattr	,
		const char __user *	,
		pathname	,
		const char __user *	,
		name	,
		void __user *	,
		value	,
		size_t	,
		size
	)

Definition at line 488 of file xattr.c.

SYSCALL_DEFINE4	(	fgetxattr	,
		int	,
		fd	,
		const char __user *	,
		name	,
		void __user *	,
		value	,
		size_t	,
		size
	)

Definition at line 502 of file xattr.c.

SYSCALL_DEFINE5	(	setxattr	,
		const char __user *	,
		pathname	,
		const char __user *	,
		name	,
		const void __user *	,
		value	,
		size_t	,
		size	,
		int	,
		flags
	)

Definition at line 367 of file xattr.c.

SYSCALL_DEFINE5	(	lsetxattr	,
		const char __user *	,
		pathname	,
		const char __user *	,
		name	,
		const void __user *	,
		value	,
		size_t	,
		size	,
		int	,
		flags
	)

Definition at line 386 of file xattr.c.

SYSCALL_DEFINE5	(	fsetxattr	,
		int	,
		fd	,
		const char __user *	,
		name	,
		const void __user *	,
		value	,
		size_t	,
		size	,
		int	,
		flags
	)

Definition at line 405 of file xattr.c.

ssize_t vfs_getxattr	(	struct dentry *	dentry,
		const char *	name,
		void *	value,
		size_t	size
	)

Definition at line 231 of file xattr.c.

ssize_t vfs_getxattr_alloc	(	struct dentry *	dentry,
		const char *	name,
		char **	xattr_value,
		size_t	xattr_size,
		gfp_t	flags
	)

Definition at line 181 of file xattr.c.

ssize_t vfs_listxattr	(	struct dentry *	d,
		char *	list,
		size_t	size
	)

Definition at line 267 of file xattr.c.

int vfs_removexattr	(	struct dentry *	dentry,
		const char *	name
	)

Definition at line 287 of file xattr.c.

int vfs_setxattr	(	struct dentry *	dentry,
		const char *	name,
		const void *	value,
		size_t	size,
		int	flags
	)

Definition at line 122 of file xattr.c.

int vfs_xattr_cmp	(	struct dentry *	dentry,
		const char *	xattr_name,
		const char *	value,
		size_t	size,
		gfp_t	flags
	)

Definition at line 212 of file xattr.c.

ssize_t xattr_getsecurity	(	struct inode *	inode,
		const char *	name,
		void *	value,
		size_t	size
	)

Definition at line 146 of file xattr.c.