From afa00abb2b68205bee539d7947130d6b1b1ec6e9 Mon Sep 17 00:00:00 2001
From: Marvin Borner
Date: Thu, 1 Apr 2021 19:39:14 +0200
Subject: Hardened entire system

By using the nonnull attribute and replace buffer-overflow-prone
functions like strcpy, strcat and sprintf by strlcpy, strlcat and
snprintf.
---
 libs/libc/inc/str.h | 20 +++++++++-----------
 1 file changed, 9 insertions(+), 11 deletions(-)

(limited to 'libs/libc/inc/str.h')

diff --git a/libs/libc/inc/str.h b/libs/libc/inc/str.h
index d0a521f..e77eeee 100644
--- a/libs/libc/inc/str.h
+++ b/libs/libc/inc/str.h
@@ -5,17 +5,15 @@
 
 #include <def.h>
 
-u32 strlen(const char *s);
-char *strcpy(char *dst, const char *src);
-char *strncpy(char *dst, const char *src, u32 n);
-char *strchr(char *s, int c);
-char *strrchr(char *s, int c);
-char *strcat(char *dst, const char *src);
-char *strncat(char *dst, const char *src, u32 n);
-int strcmp(const char *s1, const char *s2);
-int strncmp(const char *s1, const char *s2, u32 n);
-char *strinv(char *s);
-char *strdup(const char *s);
+u32 strlen(const char *s) NONNULL;
+u32 strlcpy(char *dst, const char *src, u32 size) NONNULL;
+char *strchr(char *s, int c) NONNULL;
+char *strrchr(char *s, int c) NONNULL;
+u32 strlcat(char *dst, const char *src, u32 size) NONNULL;
+int strcmp(const char *s1, const char *s2) NONNULL;
+int strncmp(const char *s1, const char *s2, u32 n) NONNULL;
+char *strinv(char *s) NONNULL;
+char *strdup(const char *s) NONNULL;
 
 const char *strerror(u32 err);
 
-- 
cgit v1.2.3