diff options
| author | Guido Trentalancia <guido@trentalancia.com> | 2010-02-03 18:40:20 +0300 |
|---|---|---|
| committer | James Morris <jmorris@namei.org> | 2010-02-04 01:06:36 +0300 |
| commit | 0719aaf5ead7555b7b7a4a080ebf2826a871384e (patch) | |
| tree | 19c0b16b1013d84a8b8092737d38e60f3dd7e939 /security/selinux/ss/policydb.c | |
| parent | 42596eafdd75257a640f64701b9b07090bcd84b0 (diff) | |
| download | linux-0719aaf5ead7555b7b7a4a080ebf2826a871384e.tar.xz | |
selinux: allow MLS->non-MLS and vice versa upon policy reload
Allow runtime switching between different policy types (e.g. from a MLS/MCS
policy to a non-MLS/non-MCS policy or viceversa).
Signed-off-by: Guido Trentalancia <guido@trentalancia.com>
Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'security/selinux/ss/policydb.c')
| -rw-r--r-- | security/selinux/ss/policydb.c | 24 |
1 files changed, 4 insertions, 20 deletions
diff --git a/security/selinux/ss/policydb.c b/security/selinux/ss/policydb.c index 5b92c0219207..23c6e53c102c 100644 --- a/security/selinux/ss/policydb.c +++ b/security/selinux/ss/policydb.c @@ -52,8 +52,6 @@ static char *symtab_name[SYM_NUM] = { }; #endif -int selinux_mls_enabled; - static unsigned int symtab_sizes[SYM_NUM] = { 2, 32, @@ -455,7 +453,7 @@ static int policydb_index_others(struct policydb *p) printk(KERN_DEBUG "SELinux: %d users, %d roles, %d types, %d bools", p->p_users.nprim, p->p_roles.nprim, p->p_types.nprim, p->p_bools.nprim); - if (selinux_mls_enabled) + if (p->mls_enabled) printk(", %d sens, %d cats", p->p_levels.nprim, p->p_cats.nprim); printk("\n"); @@ -1717,14 +1715,12 @@ int policydb_read(struct policydb *p, void *fp) int i, j, rc; __le32 buf[4]; u32 nodebuf[8]; - u32 len, len2, config, nprim, nel, nel2; + u32 len, len2, nprim, nel, nel2; char *policydb_str; struct policydb_compat_info *info; struct range_trans *rt; struct mls_range *r; - config = 0; - rc = policydb_init(p); if (rc) goto out; @@ -1772,7 +1768,7 @@ int policydb_read(struct policydb *p, void *fp) kfree(policydb_str); policydb_str = NULL; - /* Read the version, config, and table sizes. */ + /* Read the version and table sizes. */ rc = next_entry(buf, fp, sizeof(u32)*4); if (rc < 0) goto bad; @@ -1787,13 +1783,7 @@ int policydb_read(struct policydb *p, void *fp) } if ((le32_to_cpu(buf[1]) & POLICYDB_CONFIG_MLS)) { - if (ss_initialized && !selinux_mls_enabled) { - printk(KERN_ERR "SELinux: Cannot switch between non-MLS" - " and MLS policies\n"); - goto bad; - } - selinux_mls_enabled = 1; - config |= POLICYDB_CONFIG_MLS; + p->mls_enabled = 1; if (p->policyvers < POLICYDB_VERSION_MLS) { printk(KERN_ERR "SELinux: security policydb version %d " @@ -1801,12 +1791,6 @@ int policydb_read(struct policydb *p, void *fp) p->policyvers); goto bad; } - } else { - if (ss_initialized && selinux_mls_enabled) { - printk(KERN_ERR "SELinux: Cannot switch between MLS and" - " non-MLS policies\n"); - goto bad; - } } p->reject_unknown = !!(le32_to_cpu(buf[1]) & REJECT_UNKNOWN); p->allow_unknown = !!(le32_to_cpu(buf[1]) & ALLOW_UNKNOWN); |