diff options
| author | John Johansen <john.johansen@canonical.com> | 2017-08-06 15:39:08 +0300 |
|---|---|---|
| committer | John Johansen <john.johansen@canonical.com> | 2017-09-22 23:00:58 +0300 |
| commit | 26b7899510ae243e392960704ebdba52d05fbb13 (patch) | |
| tree | 1a83d9bf79e3d404f7f5a9f8d7b203396432beec | |
| parent | f872af75d325cc449b6621a0d30a4f2ba77dd092 (diff) | |
| download | linux-26b7899510ae243e392960704ebdba52d05fbb13.tar.xz | |
apparmor: add support for absolute root view based labels
With apparmor policy virtualization based on policy namespace View's
we don't generally want/need absolute root based views, however there
are cases like debugging and some secid based conversions where
using a root based view is important.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Seth Arnold <seth.arnold@canonical.com>
| -rw-r--r-- | security/apparmor/include/label.h | 1 | ||||
| -rw-r--r-- | security/apparmor/label.c | 10 |
2 files changed, 10 insertions, 1 deletions
diff --git a/security/apparmor/include/label.h b/security/apparmor/include/label.h index 9a283b722755..af22dcbbcb8a 100644 --- a/security/apparmor/include/label.h +++ b/security/apparmor/include/label.h @@ -310,6 +310,7 @@ bool aa_update_label_name(struct aa_ns *ns, struct aa_label *label, gfp_t gfp); #define FLAG_SHOW_MODE 1 #define FLAG_VIEW_SUBNS 2 #define FLAG_HIDDEN_UNCONFINED 4 +#define FLAG_ABS_ROOT 8 int aa_label_snxprint(char *str, size_t size, struct aa_ns *view, struct aa_label *label, int flags); int aa_label_asxprint(char **strp, struct aa_ns *ns, struct aa_label *label, diff --git a/security/apparmor/label.c b/security/apparmor/label.c index 38be7a89cc31..52b4ef14840d 100644 --- a/security/apparmor/label.c +++ b/security/apparmor/label.c @@ -1607,8 +1607,13 @@ int aa_label_snxprint(char *str, size_t size, struct aa_ns *ns, AA_BUG(!str && size != 0); AA_BUG(!label); - if (!ns) + if (flags & FLAG_ABS_ROOT) { + ns = root_ns; + len = snprintf(str, size, "="); + update_for_len(total, len, size, str); + } else if (!ns) { ns = labels_ns(label); + } label_for_each(i, label, profile) { if (aa_ns_visible(ns, profile->ns, flags & FLAG_VIEW_SUBNS)) { @@ -1868,6 +1873,9 @@ struct aa_label *aa_label_parse(struct aa_label *base, const char *str, if (*str == '&') str++; } + if (*str == '=') + base = &root_ns->unconfined->label; + error = vec_setup(profile, vec, len, gfp); if (error) return ERR_PTR(error); |