
diff -r 1ac0c3031ed2 -r 0a68c605ae79 no_shm_selinux/Enrich.thy
--- a/no_shm_selinux/Enrich.thy	Fri Dec 20 13:48:25 2013 +0800
+++ b/no_shm_selinux/Enrich.thy	Mon Dec 23 19:47:17 2013 +0800
@@ -1201,245 +1201,23 @@
 apply (erule enrich_proc_dup_ffd, simp+)
 done
 
-lemma enrich_proc_prop:
-  "\<lbrakk>valid s; is_created_proc s p; p' \<notin> all_procs s\<rbrakk>
-   \<Longrightarrow> valid (enrich_proc s p p') \<and> 
-       (\<forall> obj. alive s obj \<longrightarrow> alive (enrich_proc s p p') obj) \<and> 
-       (\<forall> obj. enrich_not_alive s obj \<longrightarrow> enrich_not_alive (enrich_proc s p p') obj) \<and>
-       (files_hung_by_del (enrich_proc s p p') = files_hung_by_del s) \<and> 
-       (\<forall> tp. tp \<in> current_procs s \<longrightarrow> cp2sproc (enrich_proc s p p') tp = cp2sproc s tp) \<and>
-       (\<forall> f. f \<in> current_files s \<longrightarrow> cf2sfile (enrich_proc s p p') f = cf2sfile s f) \<and> 
-       (\<forall> q. q \<in> current_msgqs s \<longrightarrow> cq2smsgq (enrich_proc s p p') q = cq2smsgq s q) \<and> 
-       (\<forall> tp fd f. file_of_proc_fd s tp fd = Some f \<longrightarrow> file_of_proc_fd (enrich_proc s p p') tp fd = Some f) \<and>
-       (\<forall> tp fd flags. flags_of_proc_fd s tp fd = Some flags \<longrightarrow> 
-                      flags_of_proc_fd (enrich_proc s p p') tp fd = Some flags) \<and>
-       (\<forall> q. msgs_of_queue (enrich_proc s p p') q = msgs_of_queue s q) \<and>
-       (\<forall> tp fd. fd \<in> proc_file_fds s tp \<longrightarrow> cfd2sfd (enrich_proc s p p') tp fd = cfd2sfd s tp fd) \<and>
-       (cp2sproc (enrich_proc s p p') p' = cp2sproc s p) \<and>
-       (\<forall> fd. fd \<in> proc_file_fds s p \<longrightarrow> cfd2sfd (enrich_proc s p p') p' fd = cfd2sfd s p fd)"
-proof (induct s)
-  case Nil
-  thus ?case by (auto simp:is_created_proc_def)
-next
-  case (Cons e s)
-  hence vd_cons: "valid (e # s)" and created_cons: "is_created_proc (e # s) p"
-    and all_procs_cons: "p' \<notin> all_procs (e # s)" and vd: "valid s" 
-    and os: "os_grant s e" and grant: "grant s e"
-    by (auto dest:vd_cons vt_grant_os vt_grant)
-  from all_procs_cons have all_procs: "p' \<notin> all_procs s" by (case_tac e, auto)
-  from Cons have pre: "is_created_proc s p \<Longrightarrow> valid (enrich_proc s p p') \<and>
-     (\<forall>obj. alive s obj \<longrightarrow> alive (enrich_proc s p p') obj) \<and>
-     (\<forall>obj. enrich_not_alive s obj \<longrightarrow> enrich_not_alive (enrich_proc s p p') obj) \<and>
-     files_hung_by_del (enrich_proc s p p') = files_hung_by_del s \<and>
-     (\<forall>tp. tp \<in> current_procs s \<longrightarrow> cp2sproc (enrich_proc s p p') tp = cp2sproc s tp) \<and>
-     (\<forall>f. f \<in> current_files s \<longrightarrow> cf2sfile (enrich_proc s p p') f = cf2sfile s f) \<and>
-     (\<forall>q. q \<in> current_msgqs s \<longrightarrow> cq2smsgq (enrich_proc s p p') q = cq2smsgq s q) \<and>
-     (\<forall>tp fd f. file_of_proc_fd s tp fd = Some f \<longrightarrow> file_of_proc_fd (enrich_proc s p p') tp fd = Some f) \<and>
-     (\<forall>tp fd flags.
-         flags_of_proc_fd s tp fd = Some flags \<longrightarrow> flags_of_proc_fd (enrich_proc s p p') tp fd = Some flags) \<and>
-     (\<forall>q. msgs_of_queue (enrich_proc s p p') q = msgs_of_queue s q) \<and>
-     (\<forall>tp fd. fd \<in> proc_file_fds s tp \<longrightarrow> cfd2sfd (enrich_proc s p p') tp fd = cfd2sfd s tp fd) \<and>     
-     (cp2sproc (enrich_proc s p p') p' = cp2sproc s p) \<and>
-     (\<forall> fd. fd \<in> proc_file_fds s p \<longrightarrow> cfd2sfd (enrich_proc s p p') p' fd = cfd2sfd s p fd)"
-    using vd all_procs by auto
-  have alive_pre: "is_created_proc s p \<Longrightarrow> (\<forall>obj. alive s obj \<longrightarrow> alive (enrich_proc s p p') obj)"
-    using pre by simp
-  hence curf_pre: "is_created_proc s p \<Longrightarrow> (\<forall>f. f \<in> current_files s \<longrightarrow> f \<in> current_files (enrich_proc s p p'))"
-    using vd apply auto
-    apply (drule is_file_or_dir, simp)
-    apply (erule disjE)
-    apply (erule_tac x = "O_file f" in allE, simp add:is_file_in_current)
-    apply (erule_tac x = "O_dir f" in allE, simp add:is_dir_in_current)
-    done
-  have "valid (enrich_proc (e # s) p p')"
-  proof-
-    from pre have pre': "is_created_proc s p \<Longrightarrow> valid (enrich_proc s p p')" by simp
-    have "is_created_proc s p \<Longrightarrow> valid (e # enrich_proc s p p')" 
-      apply (frule pre')
-      apply (erule_tac s = s in enrich_valid_intro_cons)
-      apply (simp_all add:os grant vd pre)
-      done  
-    moreover have "\<And>f fds. \<lbrakk>valid (Execve p f fds # enrich_proc s p p'); is_created_proc s p; 
-      valid (Execve p f fds # s); p' \<notin> all_procs s\<rbrakk>
-      \<Longrightarrow> valid (Execve p' f (fds \<inter> proc_file_fds s p) # Execve p f fds # enrich_proc s p p')"
-    proof-
-      fix f fds
-      assume a1: "valid (Execve p f fds # enrich_proc s p p')" and a2: "is_created_proc s p"
-        and a3: "valid (Execve p f fds # s)" and a0: "p' \<notin> all_procs s"
-      have cp2sp: "\<forall> tp. tp \<in> current_procs s \<longrightarrow> cp2sproc (enrich_proc s p p') tp = cp2sproc s tp"
-        and cf2sf: "\<forall> tf. tf \<in> current_files s \<longrightarrow> cf2sfile (enrich_proc s p p') tf = cf2sfile s tf"
-        and cfd2sfd: "\<forall> tp tfd. tfd \<in> proc_file_fds s tp \<longrightarrow> cfd2sfd (enrich_proc s p p') tp tfd = cfd2sfd s tp tfd"
-        and ffd_remain: "\<forall>tp fd f. file_of_proc_fd s tp fd = Some f \<longrightarrow> 
-                                   file_of_proc_fd (enrich_proc s p p') tp fd = Some f"
-        and dup_sp: "cp2sproc (enrich_proc s p p') p' = cp2sproc s p"
-        and dup_sfd: "\<forall> fd. fd \<in> proc_file_fds s p \<longrightarrow> cfd2sfd (enrich_proc s p p') p' fd = cfd2sfd s p fd"
-        using pre a2 by auto
-      show "valid (Execve p' f (fds \<inter> proc_file_fds s p) # Execve p f fds # enrich_proc s p p')"
-      proof-
-        from a0 a3 have a0': "p' \<noteq> p" by (auto dest!:vt_grant_os not_all_procs_prop3)
-        from a3 have grant: "grant s (Execve p f fds)" and os: "os_grant s (Execve p f fds)"
-          by (auto dest:vt_grant_os vt_grant simp del:os_grant.simps)
-        have f_in: "is_file (enrich_proc s p p') f" 
-        proof-
-          from pre a2
-          have a4: "\<forall> obj. alive s obj \<longrightarrow> alive (enrich_proc s p p') obj"
-            by (auto)
-          show ?thesis using a3 a4
-            apply (erule_tac x = "O_file f" in allE)
-            by (auto dest:vt_grant_os)
-        qed
-        moreover have a5: "proc_file_fds s p \<subseteq> proc_file_fds (Execve p f fds # enrich_proc s p p') p'" 
-          using a3 a0'
-          apply (frule_tac vt_grant_os)
-          apply (auto simp:proc_file_fds_def)
-          apply (rule_tac x = fa in exI)
-          apply (erule enrich_proc_dup_ffd)
-          apply (simp_all add:vd all_procs a2)
-          done
-        ultimately have "os_grant (Execve p f fds # enrich_proc s p p') (Execve p' f (fds \<inter> proc_file_fds s p))"
-          apply (auto simp:is_file_simps enrich_proc_dup_in a2 vd all_procs a1 enrich_proc_dup_ffds)
-          done
-        moreover have "grant (Execve p f fds # enrich_proc s p p') (Execve p' f (fds \<inter> proc_file_fds s p))"
-        proof-
-          from grant obtain up rp tp uf rf tf 
-            where p1: "sectxt_of_obj s (O_proc p) = Some (up, rp, tp)"
-            and p2: "sectxt_of_obj s (O_file f) = Some (uf, rf, tf)" 
-            by (simp split:option.splits, blast)
-          with grant obtain pu nr nt where p3: "npctxt_execve (up, rp, tp) (uf, rf, tf) = Some (pu, nr, nt)"
-            by (simp split:option.splits del:npctxt_execve.simps, blast)
-          have p1': "sectxt_of_obj (Execve p f fds # enrich_proc s p p') (O_proc p') = Some (up, rp, tp)"
-            using p1 dup_sp a1 a0'
-            apply (simp add:sectxt_of_obj_simps)
-            by (simp add:cp2sproc_def split:option.splits)
-          from os have f_in': "is_file s f"  by simp 
-          from vd os have "\<exists> sf. cf2sfile s f = Some sf"
-            by (auto dest!:is_file_in_current current_file_has_sfile)
-          hence p2': "sectxt_of_obj (Execve p f fds # enrich_proc s p p') (O_file f) = Some (uf, rf, tf)" 
-            using f_in p2 cf2sf os a1
-            apply (erule_tac x = f in allE)
-            apply (auto dest:is_file_in_current simp:cf2sfile_def sectxt_of_obj_simps split:option.splits)
-            apply (case_tac f, simp)
-            apply (drule_tac s = s in root_is_dir', simp add:vd, simp+)
-            done 
-          from dup_sfd a5 have "\<forall>fd. fd \<in> proc_file_fds s p \<longrightarrow> 
-            cfd2sfd (Execve p f fds # enrich_proc s p p') p' fd = cfd2sfd s p fd"
-            apply (rule_tac allI)
-            apply (erule_tac x = fd in allE, clarsimp)
-            apply (drule set_mp, simp)
-            apply (auto simp:cfd2sfd_execve proc_file_fds_def a1)
-            done
-          hence "inherit_fds_check (Execve p f fds # enrich_proc s p p') (up, nr, nt) p' (fds \<inter> proc_file_fds s p)"
-            using grant os p1 p2 p3 vd
-            apply (clarsimp)
-            apply (rule_tac s = s and p = p and fds = fds in enrich_inherit_fds_check_dup)
-            apply simp_all
-            done
-          moreover have "search_check (Execve p f fds # enrich_proc s p p') (up, rp, tp) f"
-            using p1 p2 p2' vd cf2sf f_in f_in' grant p3 f_in a1
-            apply (rule_tac s = s in enrich_search_check)
-            apply (simp_all add:is_file_simps)
-            apply (rule allI, rule impI, erule_tac x = fa in allE, simp)
-            apply (drule_tac ff = fa in cf2sfile_other')
-            by (auto simp:a2 curf_pre)
-          ultimately show ?thesis 
-            using p1' p2' p3
-            apply (simp split:option.splits)
-            using grant p1 p2
-            apply simp
-            done
-        qed
-        ultimately show ?thesis using a1
-          by (erule_tac valid.intros(2), auto)
-      qed
-    qed
-    moreover have "\<And>tp fds. \<lbrakk>valid (Clone tp p fds # s); p' \<noteq> p; p' \<notin> all_procs s\<rbrakk> \<Longrightarrow> 
-      valid (Clone tp p' (fds \<inter> proc_file_fds s tp) # Clone tp p fds # s)"
-      apply (frule vt_grant_os, frule vt_grant, drule not_all_procs_prop3)
-      apply (rule valid.intros(2))
-      apply (simp_all split:option.splits add:sectxt_of_obj_simps)
-      apply (auto simp add:proc_file_fds_def)[1]
-      apply (auto simp:inherit_fds_check_def sectxt_of_obj_simps sectxts_of_fds_def inherit_fds_check_ctxt_def)
-      done
-    moreover have "\<And>f flags fd opt. \<lbrakk>valid (Open p f flags fd opt # enrich_proc s p p'); 
-      is_created_proc s p; valid (Open p f flags fd opt # s); p' \<notin> all_procs s\<rbrakk>
-       \<Longrightarrow> valid (Open p' f (remove_create_flag flags) fd None # Open p f flags fd opt # enrich_proc s p p')"
-    proof-
-      fix f flags fd inum
-      assume a1: "valid (Open p f flags fd inum # enrich_proc s p p')" and a2: "is_created_proc s p"
-        and a3: "valid (Open p f flags fd inum # s)" and a4: "p' \<notin> all_procs s"
-      show "valid (Open p' f (remove_create_flag flags) fd inum # Open p f flags fd inum # enrich_proc s p p')"
-      proof (cases "
-        apply (rule_tac valid.intros(2))
-        apply (simp_all add:a1)
+lemma enrich_proc_dup_ffds_eq_fds:
+  "\<lbrakk>is_created_proc s p; p' \<notin> all_procs s; valid s\<rbrakk>
+   \<Longrightarrow> current_proc_fds (enrich_proc s p p') p' = proc_file_fds s p"
+apply (induct s arbitrary:p)
+apply (simp add: is_created_proc_def)
+apply (frule not_all_procs_prop3)
+apply (frule vd_cons, frule vt_grant_os, case_tac a)
+apply (auto split:if_splits option.splits dest:proc_fd_in_fds set_mp not_all_procs_prop3 
+  simp:proc_file_fds_def is_created_proc_def)
+done
 
-
-
-
+lemma oflags_check_remove_create: 
+  "oflags_check flags sp sf \<Longrightarrow> oflags_check (remove_create_flag flags) sp sf"
+apply (case_tac flags)
+apply (auto simp:oflags_check_def perms_of_flags_def perm_of_oflag_def split:bool.splits)
+done
 
-      sorry 
-    moreover have "\<And>fd. \<lbrakk>valid (CloseFd p fd # enrich_proc s p p'); is_created_proc s p; 
-      valid (CloseFd p fd # s); p' \<notin> all_procs s; fd \<in> proc_file_fds s p\<rbrakk>
-      \<Longrightarrow> valid (CloseFd p' fd # CloseFd p fd # enrich_proc s p p')"
-    proof-
-      fix fd
-      assume a1: "valid (CloseFd p fd # enrich_proc s p p')" and a2: "is_created_proc s p" 
-        and a3: "p' \<notin> all_procs s" and a4: "valid (CloseFd p fd # s)"
-        and a5: "fd \<in> proc_file_fds s p"
-      from a4 a3 have a0: "p' \<noteq> p" by (auto dest!:vt_grant_os not_all_procs_prop3)
-      have "p' \<in> current_procs (enrich_proc s p p')" 
-        using a2 a3 vd
-        by (auto intro:enrich_proc_dup_in)
-      moreover have "fd \<in> current_proc_fds (enrich_proc s p p') p'"      
-        using a5 a2 a3 vd pre'
-        apply (simp)
-        apply (drule_tac s = "enrich_proc s p p'" and p = p' in file_fds_subset_pfds)
-        apply (erule set_mp)
-        apply (simp add:enrich_proc_dup_ffds)
-        done
-      ultimately show "valid (CloseFd p' fd # CloseFd p fd # enrich_proc s p p')"
-        apply (rule_tac valid.intros(2))
-        apply (simp_all add:a1 a0 a2 pre')
-        done
-    qed
-    ultimately show ?thesis using created_cons vd_cons all_procs_cons
-      apply (case_tac e)
-      apply (auto simp:is_created_proc_simps split:if_splits)
-      done
-  qed
-  moreover have "\<forall>obj. alive (e # s) obj \<longrightarrow> alive (enrich_proc (e # s) p p') obj"
-    sorry
-  moreover have "\<forall>obj. enrich_not_alive (e # s) obj \<longrightarrow> enrich_not_alive (enrich_proc (e # s) p p') obj"
-    sorry
-  moreover have "files_hung_by_del (enrich_proc (e # s) p p') = files_hung_by_del (e # s)"
-    sorry
-  moreover have "\<forall>p. p \<in> current_procs (e # s) \<longrightarrow> cp2sproc (enrich_proc (e # s) p p') p = cp2sproc (e # s) p"
-    sorry
-  moreover have "\<forall>f. f \<in> current_files (e # s) \<longrightarrow> cf2sfile (enrich_proc (e # s) p p') f = cf2sfile (e # s) f"
-    sorry
-  moreover have "\<forall>q. q \<in> current_msgqs (e # s) \<longrightarrow> cq2smsgq (enrich_proc (e # s) p p') q = cq2smsgq (e # s) q"
-    sorry
-  moreover have "\<forall>p fd f. file_of_proc_fd (e # s) p fd = Some f \<longrightarrow> 
-    file_of_proc_fd (enrich_proc (e # s) p p') p fd = Some f"
-    sorry
-  moreover have "\<forall>p fd flags. flags_of_proc_fd (e # s) p fd = Some flags \<longrightarrow>
-        flags_of_proc_fd (enrich_proc (e # s) p p') p fd = Some flags"
-    sorry
-  moreover have "\<forall>q. msgs_of_queue (enrich_proc (e # s) p p') q = msgs_of_queue (e # s) q"
-    sorry
-  moreover have "\<forall>p fd. fd \<in> proc_file_fds (e # s) p \<longrightarrow> 
-    cfd2sfd (enrich_proc (e # s) p p') p fd = cfd2sfd (e # s) p fd"
-    sorry
-  ultimately show ?case
-    by auto
-qed
-  
+end
 
-lemma enrich_proc_valid:
-  "\<lbrakk>valid s; is_created_proc s p; p' \<notin> all_procs s\<rbrakk> \<Longrightarrow> valid (enrich_proc s p p')"
-by (auto dest:enrich_proc_prop)
-
-lemma enrich_proc_valid:
-  "\<lbrakk>valid s; is_created_proc s p; p' \<notin> all_procs s\<rbrakk> \<Longrightarrow> "
-
-
-    
\ No newline at end of file
+end
\ No newline at end of file




