apparmor: Use true and false for bool variable

Fixes coccicheck warnings:

security/apparmor/file.c:162:9-10: WARNING: return of 0/1 in function 'is_deleted' with return type bool
security/apparmor/file.c:362:9-10: WARNING: return of 0/1 in function 'xindex_is_subset' with return type bool
security/apparmor/policy_unpack.c:246:9-10: WARNING: return of 0/1 in function 'unpack_X' with return type bool
security/apparmor/policy_unpack.c:292:9-10: WARNING: return of 0/1 in function 'unpack_nameX' with return type bool
security/apparmor/policy_unpack.c:646:8-9: WARNING: return of 0/1 in function 'unpack_rlimits' with return type bool
security/apparmor/policy_unpack.c:604:8-9: WARNING: return of 0/1 in function 'unpack_secmark' with return type bool
security/apparmor/policy_unpack.c:538:8-9: WARNING: return of 0/1 in function 'unpack_trans_table' with return type bool
security/apparmor/policy_unpack.c:327:9-10: WARNING: return of 0/1 in function 'unpack_u32' with return type bool
security/apparmor/policy_unpack.c:345:9-10: WARNING: return of 0/1 in function 'unpack_u64' with return type bool
security/apparmor/policy_unpack.c:309:9-10: WARNING: return of 0/1 in function 'unpack_u8' with return type bool
security/apparmor/policy_unpack.c:568:8-9: WARNING: return of 0/1 in function 'unpack_xattrs' with return type bool
security/apparmor/policy_unpack.c:1007:10-11: WARNING: return of 0/1 in function 'verify_dfa_xindex' with return type bool
security/apparmor/policy_unpack.c:997:9-10: WARNING: return of 0/1 in function 'verify_xindex' with return type bool
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zou Wei <zou_wei@huawei.com>
Signed-off-by: John Johansen <john.johansen@canonical.com>

security/apparmor/file.c

@@ -154,13 +154,13 @@ int aa_audit_file(struct aa_profile *profile, struct aa_perms *perms,
  * is_deleted - test if a file has been completely unlinked
  * @dentry: dentry of file to test for deletion  (NOT NULL)
  *
- * Returns: %1 if deleted else %0
+ * Returns: true if deleted else false
  */
 static inline bool is_deleted(struct dentry *dentry)
 {
 	if (d_unlinked(dentry) && d_backing_inode(dentry)->i_nlink == 0)
-		return 1;
-	return 0;
+		return true;
+	return false;
 }
 
 static int path_name(const char *op, struct aa_label *label,
@@ -353,15 +353,15 @@ int aa_path_perm(const char *op, struct aa_label *label,
  * this is done as part of the subset test, where a hardlink must have
  * a subset of permissions that the target has.
  *
- * Returns: %1 if subset else %0
+ * Returns: true if subset else false
  */
 static inline bool xindex_is_subset(u32 link, u32 target)
 {
 	if (((link & ~AA_X_UNSAFE) != (target & ~AA_X_UNSAFE)) ||
 	    ((link & AA_X_UNSAFE) && !(target & AA_X_UNSAFE)))
-		return 0;
+		return false;
 
-	return 1;
+	return true;
 }
 
 static int profile_path_link(struct aa_profile *profile,

security/apparmor/policy_unpack.c

@@ -243,11 +243,11 @@ static size_t unpack_u16_chunk(struct aa_ext *e, char **chunk)
 static bool unpack_X(struct aa_ext *e, enum aa_code code)
 {
 	if (!inbounds(e, 1))
-		return 0;
+		return false;
 	if (*(u8 *) e->pos != code)
-		return 0;
+		return false;
 	e->pos++;
-	return 1;
+	return true;
 }
 
 /**
@@ -261,10 +261,10 @@ static bool unpack_X(struct aa_ext *e, enum aa_code code)
  * name element in the stream.  If @name is NULL any name element will be
  * skipped and only the typecode will be tested.
  *
- * Returns 1 on success (both type code and name tests match) and the read
+ * Returns true on success (both type code and name tests match) and the read
  * head is advanced past the headers
  *
- * Returns: 0 if either match fails, the read head does not move
+ * Returns: false if either match fails, the read head does not move
  */
 static bool unpack_nameX(struct aa_ext *e, enum aa_code code, const char *name)
 {
@@ -289,11 +289,11 @@ static bool unpack_nameX(struct aa_ext *e, enum aa_code code, const char *name)
 
 	/* now check if type code matches */
 	if (unpack_X(e, code))
-		return 1;
+		return true;
 
 fail:
 	e->pos = pos;
-	return 0;
+	return false;
 }
 
 static bool unpack_u8(struct aa_ext *e, u8 *data, const char *name)
@@ -306,12 +306,12 @@ static bool unpack_u8(struct aa_ext *e, u8 *data, const char *name)
 		if (data)
 			*data = get_unaligned((u8 *)e->pos);
 		e->pos += sizeof(u8);
-		return 1;
+		return true;
 	}
 
 fail:
 	e->pos = pos;
-	return 0;
+	return false;
 }
 
 static bool unpack_u32(struct aa_ext *e, u32 *data, const char *name)
@@ -324,12 +324,12 @@ static bool unpack_u32(struct aa_ext *e, u32 *data, const char *name)
 		if (data)
 			*data = le32_to_cpu(get_unaligned((__le32 *) e->pos));
 		e->pos += sizeof(u32);
-		return 1;
+		return true;
 	}
 
 fail:
 	e->pos = pos;
-	return 0;
+	return false;
 }
 
 static bool unpack_u64(struct aa_ext *e, u64 *data, const char *name)
@@ -342,12 +342,12 @@ static bool unpack_u64(struct aa_ext *e, u64 *data, const char *name)
 		if (data)
 			*data = le64_to_cpu(get_unaligned((__le64 *) e->pos));
 		e->pos += sizeof(u64);
-		return 1;
+		return true;
 	}
 
 fail:
 	e->pos = pos;
-	return 0;
+	return false;
 }
 
 static size_t unpack_array(struct aa_ext *e, const char *name)
@@ -472,7 +472,7 @@ static struct aa_dfa *unpack_dfa(struct aa_ext *e)
  * @e: serialized data extent information  (NOT NULL)
  * @profile: profile to add the accept table to (NOT NULL)
  *
- * Returns: 1 if table successfully unpacked
+ * Returns: true if table successfully unpacked
  */
 static bool unpack_trans_table(struct aa_ext *e, struct aa_profile *profile)
 {
@@ -535,12 +535,12 @@ static bool unpack_trans_table(struct aa_ext *e, struct aa_profile *profile)
 		if (!unpack_nameX(e, AA_STRUCTEND, NULL))
 			goto fail;
 	}
-	return 1;
+	return true;
 
 fail:
 	aa_free_domain_entries(&profile->file.trans);
 	e->pos = saved_pos;
-	return 0;
+	return false;
 }
 
 static bool unpack_xattrs(struct aa_ext *e, struct aa_profile *profile)
@@ -565,11 +565,11 @@ static bool unpack_xattrs(struct aa_ext *e, struct aa_profile *profile)
 			goto fail;
 	}
 
-	return 1;
+	return true;
 
 fail:
 	e->pos = pos;
-	return 0;
+	return false;
 }
 
 static bool unpack_secmark(struct aa_ext *e, struct aa_profile *profile)
@@ -601,7 +601,7 @@ static bool unpack_secmark(struct aa_ext *e, struct aa_profile *profile)
 			goto fail;
 	}
 
-	return 1;
+	return true;
 
 fail:
 	if (profile->secmark) {
@@ -613,7 +613,7 @@ static bool unpack_secmark(struct aa_ext *e, struct aa_profile *profile)
 	}
 
 	e->pos = pos;
-	return 0;
+	return false;
 }
 
 static bool unpack_rlimits(struct aa_ext *e, struct aa_profile *profile)
@@ -643,11 +643,11 @@ static bool unpack_rlimits(struct aa_ext *e, struct aa_profile *profile)
 		if (!unpack_nameX(e, AA_STRUCTEND, NULL))
 			goto fail;
 	}
-	return 1;
+	return true;
 
 fail:
 	e->pos = pos;
-	return 0;
+	return false;
 }
 
 static u32 strhash(const void *data, u32 len, u32 seed)
@@ -994,8 +994,8 @@ static bool verify_xindex(int xindex, int table_size)
 	xtype = xindex & AA_X_TYPE_MASK;
 	index = xindex & AA_X_INDEX_MASK;
 	if (xtype == AA_X_TABLE && index >= table_size)
-		return 0;
-	return 1;
+		return false;
+	return true;
 }
 
 /* verify dfa xindexes are in range of transition tables */
@@ -1004,11 +1004,11 @@ static bool verify_dfa_xindex(struct aa_dfa *dfa, int table_size)
 	int i;
 	for (i = 0; i < dfa->tables[YYTD_ID_ACCEPT]->td_lolen; i++) {
 		if (!verify_xindex(dfa_user_xindex(dfa, i), table_size))
-			return 0;
+			return false;
 		if (!verify_xindex(dfa_other_xindex(dfa, i), table_size))
-			return 0;
+			return false;
 	}
-	return 1;
+	return true;
 }
 
 /**