slsm: add casts

security/slsm/lsm.c

@@ -104,7 +104,7 @@ static int passt_bprm_set_creds(struct linux_binprm *bprm) {
 	/* buffer freed below, name is pointer into buffer */
 	name = passt_get_path(&bprm->file->f_path, &buffer);
 	if (IS_ERR(name)) {
-		error = PTR_ERR(name);
+		error = (int)PTR_ERR(name);
 		name = bprm->filename;
 		goto audit;
 	}
@@ -175,7 +175,7 @@ static int passt_path_common(const struct path *path, const struct cred *cred,
 
 	name = passt_get_path(path, &buffer);
 	if (IS_ERR(name)) {
-		error = PTR_ERR(name);
+		error = (int)PTR_ERR(name);
 		goto cleanup;
 	}
 
@@ -223,14 +223,14 @@ static int passt_path_link(struct dentry *old_dentry, struct path *new_dir,
 
 	target_name = passt_get_path(&target, &target_buffer);
 	if (IS_ERR(target_name)) {
-		ret = PTR_ERR(target_name);
+		ret = (int)PTR_ERR(target_name);
 		goto cleanup;
 	}
 	perms = slsm_query_perms(target_name, pt->label);
 
 	link_name = passt_get_path(&link, &link_buffer);
 	if (IS_ERR(link_name)) {
-		ret = PTR_ERR(link_name);
+		ret = (int)PTR_ERR(link_name);
 		goto cleanup;
 	}
 	would_get = slsm_query_perms(link_name, pt->label);

security/slsm/passtfs.c

@@ -136,7 +136,7 @@ static int __init create_passtfs(void)
 	passtfs_dir = securityfs_create_dir("slsm", NULL);
 	if (IS_ERR(passtfs_dir)) {
 		printk(KERN_ERR "slsm: unable to create securityfs dir\n");
-		return PTR_ERR(passtfs_dir);
+		return (int)PTR_ERR(passtfs_dir);
 	}
 
 	passtfs_profiles = securityfs_create_file("profiles", 0600, passtfs_dir,
@@ -144,7 +144,7 @@ static int __init create_passtfs(void)
 	if (IS_ERR(passtfs_profiles)) {
 		securityfs_remove(passtfs_dir);
 		printk(KERN_ERR "slsm: unable to create securityfs file\n");
-		return PTR_ERR(passtfs_profiles);
+		return (int)PTR_ERR(passtfs_profiles);
 	}
 
 	return 0;

security/slsm/tree.c

@@ -57,7 +57,7 @@ static const char *next_path_component(const char **path, size_t *length) {
 	const char *start = *path;
 	const char *next = strchr(*path, '/');
 	if (next) {
-		*length = next - start;
+		*length = (size_t)(next - start);
 		next++; /* skip '/' */
 	} else {
 		*length = strlen(start);