path: root/sys-libs/libsemanage/files/0002-libsemanage-Add-policy-binary-and-file_contexts.loca.patch

From 9638af24a1e890d673549f0b25d854458e07032e Mon Sep 17 00:00:00 2001
From: Yuli Khodorkovskiy <ykhodorkovskiy@tresys.com>
Date: Thu, 2 Jul 2015 09:27:36 -0400
Subject: [PATCH] libsemanage: Add policy binary and file_contexts.local to the
 store

This patch writes policy.kern and file_contexts.local to the policy store as
well as /etc/selinux/. Additionally, policy.kern and file_contexts.local
are now parsed from the store rather than the final directory which was
the old behavior. This allows all policy related files to be kept in the
policy store.

This patch also renames /var/lib/selinux/tmp to 'final' and changes
policy.kern in the store to longer be a symlink.

Signed-off-by: Yuli Khodorkovskiy <ykhodorkovskiy@tresys.com>
---
 libsemanage/src/booleans_policydb.c      |  6 ++--
 libsemanage/src/direct_api.c             | 33 +++++++++++++++----
 libsemanage/src/interfaces_policydb.c    |  6 ++--
 libsemanage/src/nodes_policydb.c         |  6 ++--
 libsemanage/src/ports_policydb.c         |  6 ++--
 libsemanage/src/semanage_store.c         | 55 ++++++++++++++++++++++++--------
 libsemanage/src/semanage_store.h         |  5 +++
 libsemanage/src/users_base_policydb.c    |  6 ++--
 libsemanage/utils/semanage_migrate_store |  3 +-
 9 files changed, 86 insertions(+), 40 deletions(-)

diff --git a/libsemanage/src/booleans_policydb.c b/libsemanage/src/booleans_policydb.c
index 74af2a3..6869d6c 100644
--- a/libsemanage/src/booleans_policydb.c
+++ b/libsemanage/src/booleans_policydb.c
@@ -55,10 +55,8 @@ int bool_policydb_dbase_init(semanage_handle_t * handle,
 {
 
 	if (dbase_policydb_init(handle,
-				semanage_final_path(SEMANAGE_FINAL_SELINUX,
-						    SEMANAGE_KERNEL),
-				semanage_final_path(SEMANAGE_FINAL_TMP,
-						    SEMANAGE_KERNEL),
+				semanage_path(SEMANAGE_ACTIVE, SEMANAGE_STORE_KERNEL),
+				semanage_path(SEMANAGE_TMP, SEMANAGE_STORE_KERNEL),
 				&SEMANAGE_BOOL_RTABLE,
 				&SEMANAGE_BOOL_POLICYDB_RTABLE,
 				&dconfig->dbase) < 0)
diff --git a/libsemanage/src/direct_api.c b/libsemanage/src/direct_api.c
index d57f934..3c6b168 100644
--- a/libsemanage/src/direct_api.c
+++ b/libsemanage/src/direct_api.c
@@ -196,10 +196,8 @@ int semanage_direct_connect(semanage_handle_t * sh)
 		goto err;
 
 	if (fcontext_file_dbase_init(sh,
-				     semanage_final_path(SEMANAGE_FINAL_SELINUX,
-							 SEMANAGE_FC_LOCAL),
-				     semanage_final_path(SEMANAGE_FINAL_TMP,
-							 SEMANAGE_FC_LOCAL),
+				     semanage_path(SEMANAGE_ACTIVE, SEMANAGE_STORE_FC_LOCAL),
+				     semanage_path(SEMANAGE_TMP, SEMANAGE_STORE_FC_LOCAL),
 				     semanage_fcontext_dbase_local(sh)) < 0)
 		goto err;
 
@@ -1041,7 +1039,7 @@ static int semanage_direct_commit(semanage_handle_t * sh)
 	size_t fc_buffer_len = 0;
 	const char *ofilename = NULL;
 	const char *path;
-	int retval = -1, num_modinfos = 0, i;
+	int retval = -1, num_modinfos = 0, i, missing_policy_kern = 0;
 	sepol_policydb_t *out = NULL;
 	struct cil_db *cildb = NULL;
 	semanage_module_info_t *modinfos = NULL;
@@ -1143,8 +1141,20 @@ static int semanage_direct_commit(semanage_handle_t * sh)
 	modified |= dontaudit_modified;
 	modified |= preserve_tunables_modified;
 
+	/* This is for systems that have already migrated with an older version
+	 * of semanage_migrate_store. The older version did not copy policy.kern so
+	 * the policy binary must be rebuilt here.
+	 */
+	if (!sh->do_rebuild && !modified) {
+		path = semanage_path(SEMANAGE_TMP, SEMANAGE_STORE_KERNEL);
+
+		if (access(path, F_OK) != 0) {
+			missing_policy_kern = 1;
+		}
+	}
+
 	/* If there were policy changes, or explicitly requested, rebuild the policy */
-	if (sh->do_rebuild || modified) {
+	if (sh->do_rebuild || modified || missing_policy_kern) {
 		/* =================== Module expansion =============== */
 
 		retval = semanage_get_active_modules(sh, &modinfos, &num_modinfos);
@@ -1302,6 +1312,17 @@ static int semanage_direct_commit(semanage_handle_t * sh)
 	if (retval < 0)
 		goto cleanup;
 
+	retval = semanage_copy_policydb(sh);
+	if (retval < 0)
+		goto cleanup;
+
+	path = semanage_path(SEMANAGE_TMP, SEMANAGE_STORE_FC_LOCAL);
+	if (access(path, F_OK) == 0) {
+		retval = semanage_copy_fc_local(sh);
+		if (retval < 0)
+			goto cleanup;
+	}
+
 	/* run genhomedircon if its enabled, this should be the last operation
 	 * which requires the out policydb */
 	if (!sh->conf->disable_genhomedircon) {
diff --git a/libsemanage/src/interfaces_policydb.c b/libsemanage/src/interfaces_policydb.c
index 6a42eed..552ce7d 100644
--- a/libsemanage/src/interfaces_policydb.c
+++ b/libsemanage/src/interfaces_policydb.c
@@ -51,10 +51,8 @@ int iface_policydb_dbase_init(semanage_handle_t * handle,
 {
 
 	if (dbase_policydb_init(handle,
-				semanage_final_path(SEMANAGE_FINAL_SELINUX,
-						    SEMANAGE_KERNEL),
-				semanage_final_path(SEMANAGE_FINAL_TMP,
-						    SEMANAGE_KERNEL),
+				semanage_path(SEMANAGE_ACTIVE, SEMANAGE_STORE_KERNEL),
+				semanage_path(SEMANAGE_TMP, SEMANAGE_STORE_KERNEL),
 				&SEMANAGE_IFACE_RTABLE,
 				&SEMANAGE_IFACE_POLICYDB_RTABLE,
 				&dconfig->dbase) < 0)
diff --git a/libsemanage/src/nodes_policydb.c b/libsemanage/src/nodes_policydb.c
index 56012fb..7224f00 100644
--- a/libsemanage/src/nodes_policydb.c
+++ b/libsemanage/src/nodes_policydb.c
@@ -50,10 +50,8 @@ int node_policydb_dbase_init(semanage_handle_t * handle,
 {
 
 	if (dbase_policydb_init(handle,
-				semanage_final_path(SEMANAGE_FINAL_SELINUX,
-						    SEMANAGE_KERNEL),
-				semanage_final_path(SEMANAGE_FINAL_TMP,
-						    SEMANAGE_KERNEL),
+				semanage_path(SEMANAGE_ACTIVE, SEMANAGE_STORE_KERNEL),
+				semanage_path(SEMANAGE_TMP, SEMANAGE_STORE_KERNEL),
 				&SEMANAGE_NODE_RTABLE,
 				&SEMANAGE_NODE_POLICYDB_RTABLE,
 				&dconfig->dbase) < 0)
diff --git a/libsemanage/src/ports_policydb.c b/libsemanage/src/ports_policydb.c
index b9600f0..37d7deb 100644
--- a/libsemanage/src/ports_policydb.c
+++ b/libsemanage/src/ports_policydb.c
@@ -50,10 +50,8 @@ int port_policydb_dbase_init(semanage_handle_t * handle,
 {
 
 	if (dbase_policydb_init(handle,
-				semanage_final_path(SEMANAGE_FINAL_SELINUX,
-						    SEMANAGE_KERNEL),
-				semanage_final_path(SEMANAGE_FINAL_TMP,
-						    SEMANAGE_KERNEL),
+				semanage_path(SEMANAGE_ACTIVE, SEMANAGE_STORE_KERNEL),
+				semanage_path(SEMANAGE_TMP, SEMANAGE_STORE_KERNEL),
 				&SEMANAGE_PORT_RTABLE,
 				&SEMANAGE_PORT_POLICYDB_RTABLE,
 				&dconfig->dbase) < 0)
diff --git a/libsemanage/src/semanage_store.c b/libsemanage/src/semanage_store.c
index 6051691..2856aaf 100644
--- a/libsemanage/src/semanage_store.c
+++ b/libsemanage/src/semanage_store.c
@@ -110,10 +110,12 @@ static const char *semanage_sandbox_paths[SEMANAGE_STORE_NUM_PATHS] = {
 	"/disable_dontaudit",
 	"/preserve_tunables",
 	"/modules/disabled",
+	"/policy.kern",
+	"/file_contexts.local"
 };
 
 static char const * const semanage_final_prefix[SEMANAGE_FINAL_NUM] = {
-	"/tmp",
+	"/final",
 	"",
 };
 
@@ -943,9 +945,7 @@ int semanage_make_final(semanage_handle_t *sh)
 		goto cleanup;
 	}
 
-	/* Copy in exported databases.
-	 * i = 1 to avoid copying the top level directory.
-	 */
+	// Build final directory structure
 	int i;
 	for (i = 1; i < SEMANAGE_FINAL_PATH_NUM; i++) {
 		if (strlen(semanage_final_path(SEMANAGE_FINAL_TMP, i)) >= sizeof(fn)) {
@@ -959,12 +959,6 @@ int semanage_make_final(semanage_handle_t *sh)
 			status = -1;
 			goto cleanup;
 		}
-
-		semanage_copy_file(
-			semanage_final_path(SEMANAGE_FINAL_SELINUX, i),
-			semanage_final_path(SEMANAGE_FINAL_TMP, i),
-			sh->conf->file_mode);
-		/* ignore errors, these files may not exist */
 	}
 
 cleanup:
@@ -2019,8 +2013,7 @@ int semanage_read_policydb(semanage_handle_t * sh, sepol_policydb_t * in)
 	FILE *infile = NULL;
 
 	if ((kernel_filename =
-	     semanage_final_path(SEMANAGE_FINAL_SELINUX,
-				 SEMANAGE_KERNEL)) == NULL) {
+	     semanage_path(SEMANAGE_ACTIVE, SEMANAGE_STORE_KERNEL)) == NULL) {
 		goto cleanup;
 	}
 	if ((infile = fopen(kernel_filename, "r")) == NULL) {
@@ -2061,7 +2054,7 @@ int semanage_write_policydb(semanage_handle_t * sh, sepol_policydb_t * out)
 	FILE *outfile = NULL;
 
 	if ((kernel_filename =
-	     semanage_final_path(SEMANAGE_FINAL_TMP, SEMANAGE_KERNEL)) == NULL) {
+	     semanage_path(SEMANAGE_TMP, SEMANAGE_STORE_KERNEL)) == NULL) {
 		goto cleanup;
 	}
 	if ((outfile = fopen(kernel_filename, "wb")) == NULL) {
@@ -2921,3 +2914,39 @@ int semanage_nc_sort(semanage_handle_t * sh, const char *buf, size_t buf_len,
 
 	return 0;
 }
+
+int semanage_copy_policydb(semanage_handle_t *sh)
+{
+	const char *src = NULL;
+	const char *dst = NULL;
+	int rc = -1;
+
+	src = semanage_path(SEMANAGE_TMP, SEMANAGE_STORE_KERNEL);
+	dst = semanage_final_path(SEMANAGE_FINAL_TMP, SEMANAGE_KERNEL);
+
+	rc = semanage_copy_file(src, dst, sh->conf->file_mode);
+	if (rc != 0) {
+		goto cleanup;
+	}
+
+cleanup:
+	return rc;
+}
+
+int semanage_copy_fc_local(semanage_handle_t *sh)
+{
+	const char *src = NULL;
+	const char *dst = NULL;
+	int rc = -1;
+
+	src = semanage_path(SEMANAGE_TMP, SEMANAGE_STORE_FC_LOCAL);
+	dst = semanage_final_path(SEMANAGE_FINAL_TMP, SEMANAGE_FC_LOCAL);
+
+	rc = semanage_copy_file(src, dst, sh->conf->file_mode);
+	if (rc != 0) {
+		goto cleanup;
+	}
+
+cleanup:
+	return rc;
+}
diff --git a/libsemanage/src/semanage_store.h b/libsemanage/src/semanage_store.h
index 62c7079..ade43f2 100644
--- a/libsemanage/src/semanage_store.h
+++ b/libsemanage/src/semanage_store.h
@@ -55,6 +55,8 @@ enum semanage_sandbox_defs {
 	SEMANAGE_DISABLE_DONTAUDIT,
 	SEMANAGE_PRESERVE_TUNABLES,
 	SEMANAGE_MODULES_DISABLED,
+	SEMANAGE_STORE_KERNEL,
+	SEMANAGE_STORE_FC_LOCAL,
 	SEMANAGE_STORE_NUM_PATHS
 };
 
@@ -148,4 +150,7 @@ int semanage_nc_sort(semanage_handle_t * sh,
 		     size_t buf_len,
 		     char **sorted_buf, size_t * sorted_buf_len);
 
+int semanage_copy_policydb(semanage_handle_t *sh);
+int semanage_copy_fc_local(semanage_handle_t *sh);
+
 #endif
diff --git a/libsemanage/src/users_base_policydb.c b/libsemanage/src/users_base_policydb.c
index 0a6ab9c..b42279c 100644
--- a/libsemanage/src/users_base_policydb.c
+++ b/libsemanage/src/users_base_policydb.c
@@ -50,10 +50,8 @@ int user_base_policydb_dbase_init(semanage_handle_t * handle,
 {
 
 	if (dbase_policydb_init(handle,
-				semanage_final_path(SEMANAGE_FINAL_SELINUX,
-						    SEMANAGE_KERNEL),
-				semanage_final_path(SEMANAGE_FINAL_TMP,
-						    SEMANAGE_KERNEL),
+				semanage_path(SEMANAGE_ACTIVE, SEMANAGE_STORE_KERNEL),
+				semanage_path(SEMANAGE_TMP, SEMANAGE_STORE_KERNEL),
 				&SEMANAGE_USER_BASE_RTABLE,
 				&SEMANAGE_USER_BASE_POLICYDB_RTABLE,
 				&dconfig->dbase) < 0)
diff --git a/libsemanage/utils/semanage_migrate_store b/libsemanage/utils/semanage_migrate_store
index 2f85e9c..b170eda 100755
--- a/libsemanage/utils/semanage_migrate_store
+++ b/libsemanage/utils/semanage_migrate_store
@@ -243,7 +243,8 @@ if __name__ == "__main__":
 		"users.local",
 		"users_extra.local",
 		"disable_dontaudit",
-		"preserve_tunables" ]
+		"preserve_tunables",
+		"policy.kern" ]
 
 
 	create_dir(newroot_path(), 0o755)
-- 
2.4.6