From 8023976cf4627d9f1d82ad468ec40e32eb87d211 Mon Sep 17 00:00:00 2001 From: Harry Ciao Date: Fri, 25 Mar 2011 13:51:56 +0800 Subject: SELinux: Add class support to the role_trans structure If kernel policy version is >= 26, then the binary representation of the role_trans structure supports specifying the class for the current subject or the newly created object. If kernel policy version is < 26, then the class field would be default to the process class. Signed-off-by: Harry Ciao Acked-by: Stephen Smalley Signed-off-by: Eric Paris --- security/selinux/ss/policydb.c | 14 ++++++++++++++ security/selinux/ss/policydb.h | 3 ++- 2 files changed, 16 insertions(+), 1 deletion(-) (limited to 'security/selinux/ss') diff --git a/security/selinux/ss/policydb.c b/security/selinux/ss/policydb.c index e7b850ad57ee..fd62c50d6e7d 100644 --- a/security/selinux/ss/policydb.c +++ b/security/selinux/ss/policydb.c @@ -128,6 +128,11 @@ static struct policydb_compat_info policydb_compat[] = { .sym_num = SYM_NUM, .ocon_num = OCON_NUM, }, + { + .version = POLICYDB_VERSION_ROLETRANS, + .sym_num = SYM_NUM, + .ocon_num = OCON_NUM, + }, }; static struct policydb_compat_info *policydb_lookup_compat(int version) @@ -2302,8 +2307,17 @@ int policydb_read(struct policydb *p, void *fp) tr->role = le32_to_cpu(buf[0]); tr->type = le32_to_cpu(buf[1]); tr->new_role = le32_to_cpu(buf[2]); + if (p->policyvers >= POLICYDB_VERSION_ROLETRANS) { + rc = next_entry(buf, fp, sizeof(u32)); + if (rc) + goto bad; + tr->tclass = le32_to_cpu(buf[0]); + } else + tr->tclass = p->process_class; + if (!policydb_role_isvalid(p, tr->role) || !policydb_type_isvalid(p, tr->type) || + !policydb_class_isvalid(p, tr->tclass) || !policydb_role_isvalid(p, tr->new_role)) goto bad; ltr = tr; diff --git a/security/selinux/ss/policydb.h b/security/selinux/ss/policydb.h index 732ea4a68682..801175f79cf9 100644 --- a/security/selinux/ss/policydb.h +++ b/security/selinux/ss/policydb.h @@ -72,7 +72,8 @@ struct role_datum { struct role_trans { u32 role; /* current role */ - u32 type; /* program executable type */ + u32 type; /* program executable type, or new object type */ + u32 tclass; /* process class, or new object class */ u32 new_role; /* new role */ struct role_trans *next; }; -- cgit v1.2.3-59-g8ed1b