compile success for libsepl in kernel

kernel/libsepol/fuzz/binpolicy-fuzzer.c

@@ -0,0 +1,63 @@
+#include <sepol/debug.h>
+#include <sepol/kernel_to_cil.h>
+#include <sepol/kernel_to_conf.h>
+#include <sepol/policydb/policydb.h>
+
+extern int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size);
+
+static int write_binary_policy(policydb_t *p, FILE *outfp)
+{
+	struct policy_file pf;
+
+	policy_file_init(&pf);
+	pf.type = PF_USE_STDIO;
+	pf.fp = outfp;
+	return ksu_policydb_write(p, &pf);
+}
+
+int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
+{
+	policydb_t policydb = {};
+	sidtab_t sidtab = {};
+	struct policy_file pf;
+	FILE *devnull = NULL;
+
+	sepol_debug(0);
+
+	policy_file_init(&pf);
+	pf.type = PF_USE_MEMORY;
+	pf.data = (char *) data;
+	pf.len = size;
+
+	if (policydb_init(&policydb))
+		goto exit;
+
+	if (ksu_policydb_read(&policydb, &pf, /*verbose=*/0))
+		goto exit;
+
+	if (ksu_policydb_load_isids(&policydb, &sidtab))
+		goto exit;
+
+	if (policydb.policy_type == POLICY_KERN)
+		(void) policydb_optimize(&policydb);
+
+	devnull = fopen("/dev/null", "w");
+	if (!devnull)
+		goto exit;
+
+	(void) write_binary_policy(&policydb, devnull);
+
+	(void) sepol_kernel_policydb_to_conf(devnull, &policydb);
+
+	(void) sepol_kernel_policydb_to_cil(devnull, &policydb);
+
+exit:
+	if (devnull != NULL)
+		fclose(devnull);
+
+	ksu_policydb_destroy(&policydb);
+	sepol_sidtab_destroy(&sidtab);
+
+	/* Non-zero return values are reserved for future use. */
+	return 0;
+}

kernel/libsepol/fuzz/secilc-fuzzer.c

@@ -0,0 +1,74 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <string.h>
+#include <getopt.h>
+#include <sys/stat.h>
+
+#include <sepol/cil/cil.h>
+#include <sepol/policydb.h>
+
+static void log_handler(__attribute__((unused)) int lvl, __attribute__((unused)) const char *msg) {
+	/* be quiet */
+}
+
+int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
+	enum cil_log_level log_level = CIL_ERR;
+	struct sepol_policy_file *pf = NULL;
+	FILE *dev_null = NULL;
+	int target = SEPOL_TARGET_SELINUX;
+	int disable_dontaudit = 0;
+	int multiple_decls = 0;
+	int disable_neverallow = 0;
+	int preserve_tunables = 0;
+	int policyvers = POLICYDB_VERSION_MAX;
+	int mls = -1;
+	int attrs_expand_generated = 0;
+	struct cil_db *db = NULL;
+	sepol_policydb_t *pdb = NULL;
+
+	cil_set_log_level(log_level);
+	cil_set_log_handler(log_handler);
+
+	cil_db_init(&db);
+	cil_set_disable_dontaudit(db, disable_dontaudit);
+	cil_set_multiple_decls(db, multiple_decls);
+	cil_set_disable_neverallow(db, disable_neverallow);
+	cil_set_preserve_tunables(db, preserve_tunables);
+	cil_set_mls(db, mls);
+	cil_set_target_platform(db, target);
+	cil_set_policy_version(db, policyvers);
+	cil_set_attrs_expand_generated(db, attrs_expand_generated);
+
+	if (cil_add_file(db, "fuzz", (const char *)data, size) != SEPOL_OK)
+		goto exit;
+
+	if (cil_compile(db) != SEPOL_OK)
+		goto exit;
+
+	if (cil_build_policydb(db, &pdb) != SEPOL_OK)
+		goto exit;
+
+	if (sepol_policydb_optimize(pdb) != SEPOL_OK)
+		goto exit;
+
+	dev_null = fopen("/dev/null", "w");
+	if (dev_null == NULL)
+		goto exit;
+
+	if (sepol_policy_file_create(&pf) != 0)
+		goto exit;
+
+	sepol_policy_file_set_fp(pf, dev_null);
+
+	if (sepol_policydb_write(pdb, pf) != 0)
+		goto exit;
+exit:
+	if (dev_null != NULL)
+		fclose(dev_null);
+
+	cil_db_destroy(&db);
+	sepol_policydb_free(pdb);
+	sepol_policy_file_free(pf);
+	return 0;
+}