159 lines
4.3 KiB
Diff
159 lines
4.3 KiB
Diff
From 86ec04cfded8b2a76953ca2682d2a32bf6b24721 Mon Sep 17 00:00:00 2001
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From: James Carter <jwcart2@gmail.com>
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Date: Wed, 21 Apr 2021 13:21:11 -0400
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Subject: [PATCH] libsepol/cil: Add functions to make use of cil_write_ast()
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Add the functions cil_write_parse_ast(), cil_write_build_ast(),
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and cil_write_resolve_ast() that can be used outside of libsepol.
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These functions take a FILE pointer and CIL db, do the CIL build
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through the desired phase, and then call cil_write_ast() to write
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the CIL AST at that point.
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Signed-off-by: James Carter <jwcart2@gmail.com>
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---
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libsepol/cil/include/cil/cil.h | 3 ++
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libsepol/cil/src/cil.c | 92 ++++++++++++++++++++++++++++++++++
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libsepol/src/libsepol.map.in | 3 ++
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3 files changed, 98 insertions(+)
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diff --git a/libsepol/cil/include/cil/cil.h b/libsepol/cil/include/cil/cil.h
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index e6f4503eb33a..92fac6e1619a 100644
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--- a/libsepol/cil/include/cil/cil.h
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+++ b/libsepol/cil/include/cil/cil.h
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@@ -60,6 +60,9 @@ extern void cil_set_attrs_expand_size(struct cil_db *db, unsigned attrs_expand_s
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extern void cil_set_target_platform(cil_db_t *db, int target_platform);
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extern void cil_set_policy_version(cil_db_t *db, int policy_version);
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extern void cil_write_policy_conf(FILE *out, struct cil_db *db);
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+extern int cil_write_parse_ast(FILE *out, cil_db_t *db);
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+extern int cil_write_build_ast(FILE *out, cil_db_t *db);
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+extern int cil_write_resolve_ast(FILE *out, cil_db_t *db);
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enum cil_log_level {
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CIL_ERR = 1,
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diff --git a/libsepol/cil/src/cil.c b/libsepol/cil/src/cil.c
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index b971922c70b5..0d351b491c2c 100644
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--- a/libsepol/cil/src/cil.c
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+++ b/libsepol/cil/src/cil.c
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@@ -50,6 +50,7 @@
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#include "cil_binary.h"
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#include "cil_policy.h"
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#include "cil_strpool.h"
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+#include "cil_write_ast.h"
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int cil_sym_sizes[CIL_SYM_ARRAY_NUM][CIL_SYM_NUM] = {
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{64, 64, 64, 1 << 13, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64},
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@@ -572,6 +573,97 @@ exit:
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return rc;
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}
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+int cil_write_parse_ast(FILE *out, cil_db_t *db)
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+{
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+ int rc = SEPOL_ERR;
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+
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+ if (db == NULL) {
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+ goto exit;
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+ }
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+
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+ cil_log(CIL_INFO, "Writing Parse AST\n");
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+ rc = cil_write_ast(out, CIL_WRITE_AST_PHASE_PARSE, db->parse->root);
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+ if (rc != SEPOL_OK) {
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+ cil_log(CIL_ERR, "Failed to write parse ast\n");
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+ goto exit;
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+ }
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+
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+exit:
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+ return rc;
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+}
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+
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+int cil_write_build_ast(FILE *out, cil_db_t *db)
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+{
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+ int rc = SEPOL_ERR;
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+
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+ if (db == NULL) {
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+ goto exit;
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+ }
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+
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+ cil_log(CIL_INFO, "Building AST from Parse Tree\n");
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+ rc = cil_build_ast(db, db->parse->root, db->ast->root);
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+ if (rc != SEPOL_OK) {
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+ cil_log(CIL_ERR, "Failed to build ast\n");
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+ goto exit;
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+ }
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+
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+ cil_log(CIL_INFO, "Destroying Parse Tree\n");
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+ cil_tree_destroy(&db->parse);
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+
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+ cil_log(CIL_INFO, "Writing Build AST\n");
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+ rc = cil_write_ast(out, CIL_WRITE_AST_PHASE_BUILD, db->ast->root);
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+ if (rc != SEPOL_OK) {
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+ cil_log(CIL_ERR, "Failed to write build ast\n");
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+ goto exit;
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+ }
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+
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+exit:
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+ return rc;
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+}
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+
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+int cil_write_resolve_ast(FILE *out, cil_db_t *db)
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+{
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+ int rc = SEPOL_ERR;
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+
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+ if (db == NULL) {
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+ goto exit;
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+ }
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+
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+ cil_log(CIL_INFO, "Building AST from Parse Tree\n");
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+ rc = cil_build_ast(db, db->parse->root, db->ast->root);
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+ if (rc != SEPOL_OK) {
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+ cil_log(CIL_ERR, "Failed to build ast\n");
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+ goto exit;
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+ }
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+
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+ cil_log(CIL_INFO, "Destroying Parse Tree\n");
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+ cil_tree_destroy(&db->parse);
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+
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+ cil_log(CIL_INFO, "Resolving AST\n");
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+ rc = cil_resolve_ast(db, db->ast->root);
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+ if (rc != SEPOL_OK) {
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+ cil_log(CIL_ERR, "Failed to resolve ast\n");
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+ goto exit;
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+ }
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+
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+ cil_log(CIL_INFO, "Qualifying Names\n");
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+ rc = cil_fqn_qualify(db->ast->root);
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+ if (rc != SEPOL_OK) {
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+ cil_log(CIL_ERR, "Failed to qualify names\n");
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+ goto exit;
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+ }
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+
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+ cil_log(CIL_INFO, "Writing Resolve AST\n");
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+ rc = cil_write_ast(out, CIL_WRITE_AST_PHASE_RESOLVE, db->ast->root);
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+ if (rc != SEPOL_OK) {
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+ cil_log(CIL_ERR, "Failed to write resolve ast\n");
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+ goto exit;
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+ }
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+
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+exit:
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+ return rc;
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+}
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+
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int cil_build_policydb(cil_db_t *db, sepol_policydb_t **sepol_db)
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{
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int rc;
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diff --git a/libsepol/src/libsepol.map.in b/libsepol/src/libsepol.map.in
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index eb5721257638..2e503bd1b453 100644
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--- a/libsepol/src/libsepol.map.in
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+++ b/libsepol/src/libsepol.map.in
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@@ -269,4 +269,7 @@ LIBSEPOL_1.1 {
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LIBSEPOL_3.0 {
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global:
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sepol_policydb_optimize;
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+ cil_write_parse_ast;
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+ cil_write_build_ast;
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+ cil_write_resolve_ast;
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} LIBSEPOL_1.1;
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--
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2.32.0
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