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audit: add support for fcaps v3

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V3 namespaced file capabilities were introduced in
commit 8db6c34f1d ("Introduce v3 namespaced file capabilities")

Add support for these by adding the "frootid" field to the existing
fcaps fields in the NAME and BPRM_FCAPS records.

Please see github issue
https://github.com/linux-audit/audit-kernel/issues/103

Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
Acked-by: Serge Hallyn <serge@hallyn.com>
[PM: comment tweak to fit an 80 char line width]
Signed-off-by: Paul Moore <paul@paul-moore.com>
This commit is contained in:
Richard Guy Briggs
2019-01-23 21:36:25 -05:00
committed by Paul Moore
parent 4b7d248b3a
commit 2fec30e245
5 changed files with 14 additions and 4 deletions
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4
kernel/auditsc.c
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@@ -1358,6 +1358,9 @@ static void audit_log_exit(void)
audit_log_cap(ab, "pi", &axs->new_pcap.inheritable);
audit_log_cap(ab, "pe", &axs->new_pcap.effective);
audit_log_cap(ab, "pa", &axs->new_pcap.ambient);
audit_log_format(ab, " frootid=%d",
from_kuid(&init_user_ns,
axs->fcap.rootid));
break; }
}
@@ -2271,6 +2274,7 @@ int __audit_log_bprm_fcaps(struct linux_binprm *bprm,
ax->fcap.permitted = vcaps.permitted;
ax->fcap.inheritable = vcaps.inheritable;
ax->fcap.fE = !!(vcaps.magic_etc & VFS_CAP_FLAGS_EFFECTIVE);
ax->fcap.rootid = vcaps.rootid;
ax->fcap_ver = (vcaps.magic_etc & VFS_CAP_REVISION_MASK) >> VFS_CAP_REVISION_SHIFT;
ax->old_pcap.permitted = old->cap_permitted;