diff options
Diffstat (limited to 'security/tomoyo')
| -rw-r--r-- | security/tomoyo/common.c | 30 | ||||
| -rw-r--r-- | security/tomoyo/common.h | 2 | ||||
| -rw-r--r-- | security/tomoyo/domain.c | 42 | ||||
| -rw-r--r-- | security/tomoyo/tomoyo.c | 27 | ||||
| -rw-r--r-- | security/tomoyo/tomoyo.h | 3 |
5 files changed, 55 insertions, 49 deletions
diff --git a/security/tomoyo/common.c b/security/tomoyo/common.c index fdd1f4b8c448..3c8bd8ee0b95 100644 --- a/security/tomoyo/common.c +++ b/security/tomoyo/common.c @@ -1285,6 +1285,36 @@ static bool tomoyo_is_select_one(struct tomoyo_io_buffer *head, } /** + * tomoyo_delete_domain - Delete a domain. + * + * @domainname: The name of domain. + * + * Returns 0. + */ +static int tomoyo_delete_domain(char *domainname) +{ + struct tomoyo_domain_info *domain; + struct tomoyo_path_info name; + + name.name = domainname; + tomoyo_fill_path_info(&name); + down_write(&tomoyo_domain_list_lock); + /* Is there an active domain? */ + list_for_each_entry(domain, &tomoyo_domain_list, list) { + /* Never delete tomoyo_kernel_domain */ + if (domain == &tomoyo_kernel_domain) + continue; + if (domain->is_deleted || + tomoyo_pathcmp(domain->domainname, &name)) + continue; + domain->is_deleted = true; + break; + } + up_write(&tomoyo_domain_list_lock); + return 0; +} + +/** * tomoyo_write_domain_policy - Write domain policy. * * @head: Pointer to "struct tomoyo_io_buffer". diff --git a/security/tomoyo/common.h b/security/tomoyo/common.h index 6d6ba09af457..31df541911f7 100644 --- a/security/tomoyo/common.h +++ b/security/tomoyo/common.h @@ -339,8 +339,6 @@ const char *tomoyo_get_last_name(const struct tomoyo_domain_info *domain); const char *tomoyo_get_msg(const bool is_enforce); /* Convert single path operation to operation name. */ const char *tomoyo_sp2keyword(const u8 operation); -/* Delete a domain. */ -int tomoyo_delete_domain(char *data); /* Create "alias" entry in exception policy. */ int tomoyo_write_alias_policy(char *data, const bool is_delete); /* diff --git a/security/tomoyo/domain.c b/security/tomoyo/domain.c index 1d8b16960576..fcf52accce2b 100644 --- a/security/tomoyo/domain.c +++ b/security/tomoyo/domain.c @@ -717,38 +717,6 @@ int tomoyo_write_alias_policy(char *data, const bool is_delete) return tomoyo_update_alias_entry(data, cp, is_delete); } -/* Domain create/delete handler. */ - -/** - * tomoyo_delete_domain - Delete a domain. - * - * @domainname: The name of domain. - * - * Returns 0. - */ -int tomoyo_delete_domain(char *domainname) -{ - struct tomoyo_domain_info *domain; - struct tomoyo_path_info name; - - name.name = domainname; - tomoyo_fill_path_info(&name); - down_write(&tomoyo_domain_list_lock); - /* Is there an active domain? */ - list_for_each_entry(domain, &tomoyo_domain_list, list) { - /* Never delete tomoyo_kernel_domain */ - if (domain == &tomoyo_kernel_domain) - continue; - if (domain->is_deleted || - tomoyo_pathcmp(domain->domainname, &name)) - continue; - domain->is_deleted = true; - break; - } - up_write(&tomoyo_domain_list_lock); - return 0; -} - /** * tomoyo_find_or_assign_new_domain - Create a domain. * @@ -818,13 +786,11 @@ struct tomoyo_domain_info *tomoyo_find_or_assign_new_domain(const char * /** * tomoyo_find_next_domain - Find a domain. * - * @bprm: Pointer to "struct linux_binprm". - * @next_domain: Pointer to pointer to "struct tomoyo_domain_info". + * @bprm: Pointer to "struct linux_binprm". * * Returns 0 on success, negative value otherwise. */ -int tomoyo_find_next_domain(struct linux_binprm *bprm, - struct tomoyo_domain_info **next_domain) +int tomoyo_find_next_domain(struct linux_binprm *bprm) { /* * This function assumes that the size of buffer returned by @@ -946,9 +912,11 @@ int tomoyo_find_next_domain(struct linux_binprm *bprm, tomoyo_set_domain_flag(old_domain, false, TOMOYO_DOMAIN_FLAGS_TRANSITION_FAILED); out: + if (!domain) + domain = old_domain; + bprm->cred->security = domain; tomoyo_free(real_program_name); tomoyo_free(symlink_program_name); - *next_domain = domain ? domain : old_domain; tomoyo_free(tmp); return retval; } diff --git a/security/tomoyo/tomoyo.c b/security/tomoyo/tomoyo.c index 3194d09fe0f4..9548a0984cc4 100644 --- a/security/tomoyo/tomoyo.c +++ b/security/tomoyo/tomoyo.c @@ -14,6 +14,12 @@ #include "tomoyo.h" #include "realpath.h" +static int tomoyo_cred_alloc_blank(struct cred *new, gfp_t gfp) +{ + new->security = NULL; + return 0; +} + static int tomoyo_cred_prepare(struct cred *new, const struct cred *old, gfp_t gfp) { @@ -25,6 +31,15 @@ static int tomoyo_cred_prepare(struct cred *new, const struct cred *old, return 0; } +static void tomoyo_cred_transfer(struct cred *new, const struct cred *old) +{ + /* + * Since "struct tomoyo_domain_info *" is a sharable pointer, + * we don't need to duplicate. + */ + new->security = old->security; +} + static int tomoyo_bprm_set_creds(struct linux_binprm *bprm) { int rc; @@ -61,14 +76,8 @@ static int tomoyo_bprm_check_security(struct linux_binprm *bprm) * Execute permission is checked against pathname passed to do_execve() * using current domain. */ - if (!domain) { - struct tomoyo_domain_info *next_domain = NULL; - int retval = tomoyo_find_next_domain(bprm, &next_domain); - - if (!retval) - bprm->cred->security = next_domain; - return retval; - } + if (!domain) + return tomoyo_find_next_domain(bprm); /* * Read permission is checked against interpreters using next domain. * '1' is the result of open_to_namei_flags(O_RDONLY). @@ -268,7 +277,9 @@ static int tomoyo_dentry_open(struct file *f, const struct cred *cred) */ static struct security_operations tomoyo_security_ops = { .name = "tomoyo", + .cred_alloc_blank = tomoyo_cred_alloc_blank, .cred_prepare = tomoyo_cred_prepare, + .cred_transfer = tomoyo_cred_transfer, .bprm_set_creds = tomoyo_bprm_set_creds, .bprm_check_security = tomoyo_bprm_check_security, #ifdef CONFIG_SYSCTL diff --git a/security/tomoyo/tomoyo.h b/security/tomoyo/tomoyo.h index 0fd588a629cf..cd6ba0bf7069 100644 --- a/security/tomoyo/tomoyo.h +++ b/security/tomoyo/tomoyo.h @@ -31,8 +31,7 @@ int tomoyo_check_2path_perm(struct tomoyo_domain_info *domain, struct path *path2); int tomoyo_check_rewrite_permission(struct tomoyo_domain_info *domain, struct file *filp); -int tomoyo_find_next_domain(struct linux_binprm *bprm, - struct tomoyo_domain_info **next_domain); +int tomoyo_find_next_domain(struct linux_binprm *bprm); /* Index numbers for Access Controls. */ |