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fs: provide rcu-walk aware permission i_ops

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Signed-off-by: Nick Piggin <npiggin@kernel.dk>
This commit is contained in:
Nick Piggin 2011-01-07 17:49:58 +11:00
commit b74c79e993
60 changed files with 287 additions and 146 deletions
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10
include/linux/fs.h
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@ -1550,11 +1550,13 @@ struct file_operations {
int (*setlease)(struct file *, long, struct file_lock **);
};
#define IPERM_FLAG_RCU 0x0001
struct inode_operations {
struct dentry * (*lookup) (struct inode *,struct dentry *, struct nameidata *);
void * (*follow_link) (struct dentry *, struct nameidata *);
int (*permission) (struct inode *, int);
int (*check_acl)(struct inode *, int);
int (*permission) (struct inode *, int, unsigned int);
int (*check_acl)(struct inode *, int, unsigned int);
int (*readlink) (struct dentry *, char __user *,int);
void (*put_link) (struct dentry *, struct nameidata *, void *);
@ -2165,8 +2167,8 @@ extern sector_t bmap(struct inode *, sector_t);
#endif
extern int notify_change(struct dentry *, struct iattr *);
extern int inode_permission(struct inode *, int);
extern int generic_permission(struct inode *, int,
int (*check_acl)(struct inode *, int));
extern int generic_permission(struct inode *, int, unsigned int,
int (*check_acl)(struct inode *, int, unsigned int));
static inline bool execute_ok(struct inode *inode)
{