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New helper: path_is_under(path1, path2)

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Analog of is_subdir for vfsmount,dentry pairs, moved from audit_tree.c

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Al Viro
2010-01-30 13:16:21 -05:00
parent 495d6c9c65
commit 2096f759ab
3 changed files with 37 additions and 39 deletions
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include/linux/fs.h
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@@ -2126,6 +2126,7 @@ extern struct file * open_exec(const char *);
/* fs/dcache.c -- generic fs support functions */
extern int is_subdir(struct dentry *, struct dentry *);
extern int path_is_under(struct path *, struct path *);
extern ino_t find_inode_number(struct dentry *, struct qstr *);
#include <linux/err.h>