diff options
Diffstat (limited to 'ubuntu/aufs/dcsub.h')
| -rw-r--r-- | ubuntu/aufs/dcsub.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/ubuntu/aufs/dcsub.h b/ubuntu/aufs/dcsub.h index be25a1346211..13b4fb2ca843 100644 --- a/ubuntu/aufs/dcsub.h +++ b/ubuntu/aufs/dcsub.h @@ -26,6 +26,7 @@ #ifdef __KERNEL__ #include <linux/dcache.h> +#include <linux/fs.h> #include <linux/types.h> struct dentry; @@ -50,6 +51,8 @@ int au_dcsub_pages(struct au_dcsub_pages *dpages, struct dentry *root, au_dpages_test test, void *arg); int au_dcsub_pages_rev(struct au_dcsub_pages *dpages, struct dentry *dentry, int do_include, au_dpages_test test, void *arg); +int au_dcsub_pages_rev_aufs(struct au_dcsub_pages *dpages, + struct dentry *dentry, int do_include); int au_test_subdir(struct dentry *d1, struct dentry *d2); /* ---------------------------------------------------------------------- */ @@ -59,5 +62,39 @@ static inline int au_d_removed(struct dentry *d) return !IS_ROOT(d) && d_unhashed(d); } +static inline int au_d_hashed_positive(struct dentry *d) +{ + int err; + struct inode *inode = d->d_inode; + err = 0; + if (unlikely(d_unhashed(d) || !inode || !inode->i_nlink)) + err = -ENOENT; + return err; +} + +static inline int au_d_alive(struct dentry *d) +{ + int err; + struct inode *inode; + err = 0; + if (!IS_ROOT(d)) + err = au_d_hashed_positive(d); + else { + inode = d->d_inode; + if (unlikely(au_d_removed(d) || !inode || !inode->i_nlink)) + err = -ENOENT; + } + return err; +} + +static inline int au_alive_dir(struct dentry *d) +{ + int err; + err = au_d_alive(d); + if (unlikely(err || IS_DEADDIR(d->d_inode))) + err = -ENOENT; + return err; +} + #endif /* __KERNEL__ */ #endif /* __AUFS_DCSUB_H__ */ |