tomoyo: remove "undelete domain" command.

Since TOMOYO's policy management tools does not use the "undelete domain"
command, we decided to remove that command.

Signed-off-by: Kentaro Takeda <takedakn@nttdata.co.jp>
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Toshiharu Harada <haradats@nttdata.co.jp>
Signed-off-by: James Morris <jmorris@namei.org>

3 files changed, 5 insertions, 100 deletions

diff --git a/security/tomoyo/common.c b/security/tomoyo/common.c
index 92cea656ad21..a0affd9cfca8 100644
--- a/security/tomoyo/common.c
+++ b/security/tomoyo/common.c
@@ -1252,15 +1252,12 @@ static int tomoyo_write_domain_policy(struct tomoyo_io_buffer *head)
         struct tomoyo_domain_info *domain = head->write_var1;
         bool is_delete = false;
         bool is_select = false;
-        bool is_undelete = false;
         unsigned int profile;
 
         if (tomoyo_str_starts(&data, TOMOYO_KEYWORD_DELETE))
                 is_delete = true;
         else if (tomoyo_str_starts(&data, TOMOYO_KEYWORD_SELECT))
                 is_select = true;
-        else if (tomoyo_str_starts(&data, TOMOYO_KEYWORD_UNDELETE))
-                is_undelete = true;
         if (is_select && tomoyo_is_select_one(head, data))
                 return 0;
         /* Don't allow updating policies by non manager programs. */
@@ -1274,9 +1271,7 @@ static int tomoyo_write_domain_policy(struct tomoyo_io_buffer *head)
                         down_read(&tomoyo_domain_list_lock);
                         domain = tomoyo_find_domain(data);
                         up_read(&tomoyo_domain_list_lock);
-                } else if (is_undelete)
-                        domain = tomoyo_undelete_domain(data);
-                else
+                } else
                         domain = tomoyo_find_or_assign_new_domain(data, 0);
                 head->write_var1 = domain;
                 return 0;
diff --git a/security/tomoyo/common.h b/security/tomoyo/common.h
index 26a76d67aa1c..e77e6a6de0f2 100644
--- a/security/tomoyo/common.h
+++ b/security/tomoyo/common.h
@@ -88,10 +88,7 @@ struct tomoyo_domain_info {
         /* Name of this domain. Never NULL.          */
         const struct tomoyo_path_info *domainname;
         u8 profile;        /* Profile number to use. */
-        u8 is_deleted;     /* Delete flag.
-                              0 = active.
-                              1 = deleted but undeletable.
-                              255 = deleted and no longer undeletable. */
+        bool is_deleted;   /* Delete flag.           */
         bool quota_warned; /* Quota warnning flag.   */
         /* DOMAIN_FLAGS_*. Use tomoyo_set_domain_flag() to modify. */
         u8 flags;
@@ -144,7 +141,6 @@ struct tomoyo_double_path_acl_record {
 #define TOMOYO_KEYWORD_NO_INITIALIZE_DOMAIN      "no_initialize_domain "
 #define TOMOYO_KEYWORD_NO_KEEP_DOMAIN            "no_keep_domain "
 #define TOMOYO_KEYWORD_SELECT                    "select "
-#define TOMOYO_KEYWORD_UNDELETE                  "undelete "
 #define TOMOYO_KEYWORD_USE_PROFILE               "use_profile "
 #define TOMOYO_KEYWORD_IGNORE_GLOBAL_ALLOW_READ  "ignore_global_allow_read"
 /* A domain definition starts with <kernel>. */
@@ -267,8 +263,6 @@ struct tomoyo_domain_info *tomoyo_find_domain(const char *domainname);
 struct tomoyo_domain_info *tomoyo_find_or_assign_new_domain(const char *
                                                             domainname,
                                                             const u8 profile);
-/* Undelete a domain. */
-struct tomoyo_domain_info *tomoyo_undelete_domain(const char *domainname);
 /* Check mode for specified functionality. */
 unsigned int tomoyo_check_flags(const struct tomoyo_domain_info *domain,
                                 const u8 index);
diff --git a/security/tomoyo/domain.c b/security/tomoyo/domain.c
index 093a756030bd..2f2b449ffd2d 100644
--- a/security/tomoyo/domain.c
+++ b/security/tomoyo/domain.c
@@ -551,9 +551,7 @@ int tomoyo_write_alias_policy(char *data, const bool is_delete)
         return tomoyo_update_alias_entry(data, cp, is_delete);
 }
 
-/* Domain create/delete/undelete handler. */
-
-/* #define TOMOYO_DEBUG_DOMAIN_UNDELETE */
+/* Domain create/delete handler. */
 
 /**
  * tomoyo_delete_domain - Delete a domain.
@@ -571,41 +569,15 @@ int tomoyo_delete_domain(char *domainname)
         tomoyo_fill_path_info(&name);
         /***** EXCLUSIVE SECTION START *****/
         down_write(&tomoyo_domain_list_lock);
-#ifdef TOMOYO_DEBUG_DOMAIN_UNDELETE
-        printk(KERN_DEBUG "tomoyo_delete_domain %s\n", domainname);
-        list_for_each_entry(domain, &tomoyo_domain_list, list) {
-                if (tomoyo_pathcmp(domain->domainname, &name))
-                        continue;
-                printk(KERN_DEBUG "List: %p %u\n", domain, domain->is_deleted);
-        }
-#endif
         /* Is there an active domain? */
         list_for_each_entry(domain, &tomoyo_domain_list, list) {
-                struct tomoyo_domain_info *domain2;
                 /* Never delete tomoyo_kernel_domain */
                 if (domain == &tomoyo_kernel_domain)
                         continue;
                 if (domain->is_deleted ||
                     tomoyo_pathcmp(domain->domainname, &name))
                         continue;
-                /* Mark already deleted domains as non undeletable. */
-                list_for_each_entry(domain2, &tomoyo_domain_list, list) {
-                        if (!domain2->is_deleted ||
-                            tomoyo_pathcmp(domain2->domainname, &name))
-                                continue;
-#ifdef TOMOYO_DEBUG_DOMAIN_UNDELETE
-                        if (domain2->is_deleted != 255)
-                                printk(KERN_DEBUG
-                                       "Marked %p as non undeletable\n",
-                                       domain2);
-#endif
-                        domain2->is_deleted = 255;
-                }
-                /* Delete and mark active domain as undeletable. */
-                domain->is_deleted = 1;
-#ifdef TOMOYO_DEBUG_DOMAIN_UNDELETE
-                printk(KERN_DEBUG "Marked %p as undeletable\n", domain);
-#endif
+                domain->is_deleted = true;
                 break;
         }
         up_write(&tomoyo_domain_list_lock);
@@ -614,58 +586,6 @@ int tomoyo_delete_domain(char *domainname)
 }
 
 /**
- * tomoyo_undelete_domain - Undelete a domain.
- *
- * @domainname: The name of domain.
- *
- * Returns pointer to "struct tomoyo_domain_info" on success, NULL otherwise.
- */
-struct tomoyo_domain_info *tomoyo_undelete_domain(const char *domainname)
-{
-        struct tomoyo_domain_info *domain;
-        struct tomoyo_domain_info *candidate_domain = NULL;
-        struct tomoyo_path_info name;
-
-        name.name = domainname;
-        tomoyo_fill_path_info(&name);
-        /***** EXCLUSIVE SECTION START *****/
-        down_write(&tomoyo_domain_list_lock);
-#ifdef TOMOYO_DEBUG_DOMAIN_UNDELETE
-        printk(KERN_DEBUG "tomoyo_undelete_domain %s\n", domainname);
-        list_for_each_entry(domain, &tomoyo_domain_list, list) {
-                if (tomoyo_pathcmp(domain->domainname, &name))
-                        continue;
-                printk(KERN_DEBUG "List: %p %u\n", domain, domain->is_deleted);
-        }
-#endif
-        list_for_each_entry(domain, &tomoyo_domain_list, list) {
-                if (tomoyo_pathcmp(&name, domain->domainname))
-                        continue;
-                if (!domain->is_deleted) {
-                        /* This domain is active. I can't undelete. */
-                        candidate_domain = NULL;
-#ifdef TOMOYO_DEBUG_DOMAIN_UNDELETE
-                        printk(KERN_DEBUG "%p is active. I can't undelete.\n",
-                               domain);
-#endif
-                        break;
-                }
-                /* Is this domain undeletable? */
-                if (domain->is_deleted == 1)
-                        candidate_domain = domain;
-        }
-        if (candidate_domain) {
-                candidate_domain->is_deleted = 0;
-#ifdef TOMOYO_DEBUG_DOMAIN_UNDELETE
-                printk(KERN_DEBUG "%p was undeleted.\n", candidate_domain);
-#endif
-        }
-        up_write(&tomoyo_domain_list_lock);
-        /***** EXCLUSIVE SECTION END *****/
-        return candidate_domain;
-}
-
-/**
  * tomoyo_find_or_assign_new_domain - Create a domain.
  *
  * @domainname: The name of domain.
@@ -711,10 +631,6 @@ struct tomoyo_domain_info *tomoyo_find_or_assign_new_domain(const char *
                 /***** CRITICAL SECTION END *****/
                 if (flag)
                         continue;
-#ifdef TOMOYO_DEBUG_DOMAIN_UNDELETE
-                printk(KERN_DEBUG "Reusing %p %s\n", domain,
-                       domain->domainname->name);
-#endif
                 list_for_each_entry(ptr, &domain->acl_info_list, list) {
                         ptr->type |= TOMOYO_ACL_DELETED;
                 }
@@ -722,7 +638,7 @@ struct tomoyo_domain_info *tomoyo_find_or_assign_new_domain(const char *
                 domain->profile = profile;
                 domain->quota_warned = false;
                 mb(); /* Avoid out-of-order execution. */
-                domain->is_deleted = 0;
+                domain->is_deleted = false;
                 goto out;
         }
         /* No memory reusable. Create using new memory. */