selinux: avoid bool as identifier name

Avoid using the identifier `bool` to improve support with future C
standards.  C23 is about to make `bool` a predefined macro (see N2654).

Signed-off-by: Christian Göttsche <cgzones@googlemail.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>

Author: cgzones

security/selinux/ss/conditional.c

@@ -38,7 +38,7 @@ static int cond_evaluate_expr(struct policydb *p, struct cond_expr *expr)
 			if (sp == (COND_EXPR_MAXDEPTH - 1))
 				return -1;
 			sp++;
-			s[sp] = p->bool_val_to_struct[node->bool - 1]->state;
+			s[sp] = p->bool_val_to_struct[node->boolean - 1]->state;
 			break;
 		case COND_NOT:
 			if (sp < 0)
@@ -366,7 +366,7 @@ static int expr_node_isvalid(struct policydb *p, struct cond_expr_node *expr)
 		return 0;
 	}
 
-	if (expr->bool > p->p_bools.nprim) {
+	if (expr->boolean > p->p_bools.nprim) {
 		pr_err("SELinux: conditional expressions uses unknown bool.\n");
 		return 0;
 	}
@@ -401,7 +401,7 @@ static int cond_read_node(struct policydb *p, struct cond_node *node, void *fp)
 			return rc;
 
 		expr->expr_type = le32_to_cpu(buf[0]);
-		expr->bool = le32_to_cpu(buf[1]);
+		expr->boolean = le32_to_cpu(buf[1]);
 
 		if (!expr_node_isvalid(p, expr))
 			return -EINVAL;
@@ -518,7 +518,7 @@ static int cond_write_node(struct policydb *p, struct cond_node *node,
 
 	for (i = 0; i < node->expr.len; i++) {
 		buf[0] = cpu_to_le32(node->expr.nodes[i].expr_type);
-		buf[1] = cpu_to_le32(node->expr.nodes[i].bool);
+		buf[1] = cpu_to_le32(node->expr.nodes[i].boolean);
 		rc = put_entry(buf, sizeof(u32), 2, fp);
 		if (rc)
 			return rc;

security/selinux/ss/conditional.h

@@ -29,7 +29,7 @@ struct cond_expr_node {
 #define COND_NEQ	7 /* bool != bool */
 #define COND_LAST	COND_NEQ
 	u32 expr_type;
-	u32 bool;
+	u32 boolean;
 };
 
 struct cond_expr {