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fs: Constify path_is_under()'s arguments

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The function path_is_under() doesn't modify the paths pointed by its
arguments but only browse them. Constifying this pointers make a cleaner
interface to be used by (future) code which may only have access to
const struct path pointers (e.g. LSM hooks).

Signed-off-by: Mickaël Salaün <mic@digikod.net>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Mickaël Salaün 2016-11-14 22:14:35 +01:00 committed by Al Viro
parent e5517c2a5a
commit 640eb7e7b5
2 changed files with 2 additions and 2 deletions
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2
fs/namespace.c
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@ -2997,7 +2997,7 @@ bool is_path_reachable(struct mount *mnt, struct dentry *dentry,
return &mnt->mnt == root->mnt && is_subdir(dentry, root->dentry);
}
bool path_is_under(struct path *path1, struct path *path2)
bool path_is_under(const struct path *path1, const struct path *path2)
{
bool res;
read_seqlock_excl(&mount_lock);

2
include/linux/fs.h
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@ -2709,7 +2709,7 @@ extern struct file * open_exec(const char *);
/* fs/dcache.c -- generic fs support functions */
extern bool is_subdir(struct dentry *, struct dentry *);
extern bool path_is_under(struct path *, struct path *);
extern bool path_is_under(const struct path *, const struct path *);
extern char *file_path(struct file *, char *, int);