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make generic_acl slightly more generic

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Now that we cache the ACL pointers in the generic inode all the generic_acl
cruft can go away and generic_acl.c can directly implement xattr handlers
dealing with the full Posix ACL semantics for in-memory filesystems.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Christoph Hellwig 2009-11-03 16:44:44 +01:00 • committed by Al Viro
commit 1c7c474c31
6 changed files with 109 additions and 257 deletions
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41
include/linux/generic_acl.h
View file

@ -1,36 +1,15 @@
/*
* include/linux/generic_acl.h
*
* (C) 2005 Andreas Gruenbacher <agruen@suse.de>
*
* This file is released under the GPL.
*/
#ifndef LINUX_GENERIC_ACL_H
#define LINUX_GENERIC_ACL_H
#ifndef GENERIC_ACL_H
#define GENERIC_ACL_H
#include <linux/xattr.h>
#include <linux/posix_acl.h>
#include <linux/posix_acl_xattr.h>
struct inode;
/**
* struct generic_acl_operations - filesystem operations
*
* Filesystems must make these operations available to the generic
* operations.
*/
struct generic_acl_operations {
struct posix_acl *(*getacl)(struct inode *, int);
void (*setacl)(struct inode *, int, struct posix_acl *);
};
extern struct xattr_handler generic_acl_access_handler;
extern struct xattr_handler generic_acl_default_handler;
size_t generic_acl_list(struct inode *, struct generic_acl_operations *, int,
char *, size_t);
int generic_acl_get(struct inode *, struct generic_acl_operations *, int,
void *, size_t);
int generic_acl_set(struct inode *, struct generic_acl_operations *, int,
const void *, size_t);
int generic_acl_init(struct inode *, struct inode *,
struct generic_acl_operations *);
int generic_acl_chmod(struct inode *, struct generic_acl_operations *);
int generic_acl_init(struct inode *, struct inode *);
int generic_acl_chmod(struct inode *);
int generic_check_acl(struct inode *inode, int mask);
#endif
#endif /* LINUX_GENERIC_ACL_H */

16
include/linux/shmem_fs.h
View file

@ -41,20 +41,4 @@ static inline struct shmem_inode_info *SHMEM_I(struct inode *inode)
extern int init_tmpfs(void);
extern int shmem_fill_super(struct super_block *sb, void *data, int silent);
#ifdef CONFIG_TMPFS_POSIX_ACL
int shmem_check_acl(struct inode *, int);
int shmem_acl_init(struct inode *, struct inode *);
extern struct xattr_handler shmem_xattr_acl_access_handler;
extern struct xattr_handler shmem_xattr_acl_default_handler;
extern struct generic_acl_operations shmem_acl_ops;
#else
static inline int shmem_acl_init(struct inode *inode, struct inode *dir)
{
return 0;
}
#endif /* CONFIG_TMPFS_POSIX_ACL */
#endif