diff options
Diffstat (limited to 'security/security.c')
| -rw-r--r-- | security/security.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/security/security.c b/security/security.c index f825304f04a7..f0a802ee29b6 100644 --- a/security/security.c +++ b/security/security.c @@ -32,6 +32,7 @@ /* Maximum number of letters for an LSM name string */ #define SECURITY_NAME_MAX 10 +char *lsm_names; /* Boot-time LSM user choice */ static __initdata char chosen_lsm[SECURITY_NAME_MAX + 1] = CONFIG_DEFAULT_SECURITY; @@ -78,6 +79,22 @@ static int __init choose_lsm(char *str) } __setup("security=", choose_lsm); +static int lsm_append(char *new, char **result) +{ + char *cp; + + if (*result == NULL) { + *result = kstrdup(new, GFP_KERNEL); + } else { + cp = kasprintf(GFP_KERNEL, "%s,%s", *result, new); + if (cp == NULL) + return -ENOMEM; + kfree(*result); + *result = cp; + } + return 0; +} + /** * security_module_enable - Load given security module on boot ? * @module: the name of the module @@ -97,6 +114,27 @@ int __init security_module_enable(const char *module) return !strcmp(module, chosen_lsm); } +/** + * security_add_hooks - Add a modules hooks to the hook lists. + * @hooks: the hooks to add + * @count: the number of hooks to add + * @lsm: the name of the security module + * + * Each LSM has to register its hooks with the infrastructure. + */ +void __init security_add_hooks(struct security_hook_list *hooks, int count, + char *lsm) +{ + int i; + + for (i = 0; i < count; i++) { + hooks[i].lsm = lsm; + list_add_tail_rcu(&hooks[i].list, hooks[i].head); + } + if (lsm_append(lsm, &lsm_names) < 0) + panic("%s - Cannot get early memory.\n", __func__); +} + /* * Hook list operation macros. * |