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apparmor: add namespace lookup fns()

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Currently lookups are restricted to a single ns component in the
path. However when namespaces are allowed to have separate views, and
scopes this will not be sufficient, as it will be possible to have
a multiple component ns path in scope.

Add some ns lookup fns() to allow this and use them.

Signed-off-by: John Johansen <john.johansen@canonical.com>
This commit is contained in:
John Johansen
2017-06-02 17:44:27 -07:00
parent ae3b316536
commit 3664268f19
3 changed files with 73 additions and 4 deletions
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13
security/apparmor/include/policy_ns.h
View File

@@ -89,6 +89,8 @@ void aa_free_ns_kref(struct kref *kref);
struct aa_ns *aa_find_ns(struct aa_ns *root, const char *name);
struct aa_ns *aa_findn_ns(struct aa_ns *root, const char *name, size_t n);
struct aa_ns *__aa_lookupn_ns(struct aa_ns *view, const char *hname, size_t n);
struct aa_ns *aa_lookupn_ns(struct aa_ns *view, const char *name, size_t n);
struct aa_ns *__aa_find_or_create_ns(struct aa_ns *parent, const char *name,
struct dentry *dir);
struct aa_ns *aa_prepare_ns(struct aa_ns *root, const char *name);
@@ -148,4 +150,15 @@ static inline struct aa_ns *__aa_find_ns(struct list_head *head,
return __aa_findn_ns(head, name, strlen(name));
}
static inline struct aa_ns *__aa_lookup_ns(struct aa_ns *base,
const char *hname)
{
return __aa_lookupn_ns(base, hname, strlen(hname));
}
static inline struct aa_ns *aa_lookup_ns(struct aa_ns *view, const char *name)
{
return aa_lookupn_ns(view, name, strlen(name));
}
#endif /* AA_NAMESPACE_H */