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| author | Harry Ciao <qingtao.cao@windriver.com> | 2011-03-25 13:51:56 +0800 |
|---|---|---|
| committer | Eric Paris <eparis@redhat.com> | 2011-03-28 14:20:58 -0400 |
| commit | 8023976cf4627d9f1d82ad468ec40e32eb87d211 (patch) | |
| tree | 82af1157ffbb00be2a8d2357a8c2fd88826233b1 | |
| parent | fe3fa43039d47ee4e22caf460b79b62a14937f79 (diff) | |
| download | linux-8023976cf4627d9f1d82ad468ec40e32eb87d211.tar.gz linux-8023976cf4627d9f1d82ad468ec40e32eb87d211.tar.bz2 linux-8023976cf4627d9f1d82ad468ec40e32eb87d211.zip | |
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 <qingtao.cao@windriver.com>
Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: Eric Paris <eparis@redhat.com>
| -rw-r--r-- | security/selinux/include/security.h | 3 | ||||
| -rw-r--r-- | security/selinux/ss/policydb.c | 14 | ||||
| -rw-r--r-- | security/selinux/ss/policydb.h | 3 |
3 files changed, 18 insertions, 2 deletions
diff --git a/security/selinux/include/security.h b/security/selinux/include/security.h index 348eb00cb668..bfc5218d5840 100644 --- a/security/selinux/include/security.h +++ b/security/selinux/include/security.h @@ -30,13 +30,14 @@ #define POLICYDB_VERSION_PERMISSIVE 23 #define POLICYDB_VERSION_BOUNDARY 24 #define POLICYDB_VERSION_FILENAME_TRANS 25 +#define POLICYDB_VERSION_ROLETRANS 26 /* Range of policy versions we understand*/ #define POLICYDB_VERSION_MIN POLICYDB_VERSION_BASE #ifdef CONFIG_SECURITY_SELINUX_POLICYDB_VERSION_MAX #define POLICYDB_VERSION_MAX CONFIG_SECURITY_SELINUX_POLICYDB_VERSION_MAX_VALUE #else -#define POLICYDB_VERSION_MAX POLICYDB_VERSION_FILENAME_TRANS +#define POLICYDB_VERSION_MAX POLICYDB_VERSION_ROLETRANS #endif /* Mask for just the mount related flags */ 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; }; |