From: Christian Brauner <christian.brauner@ubuntu.com>
Date: Sat, 22 Sep 2018 09:14:08 +0000 (+0200)
Subject: macro: add STRLITERALLEN() and STRARRAYLEN()
X-Git-Tag: lxc-3.1.0~94^2~1
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=36dee4a2b6512e4564dfc87e9b5819c070f04378;p=thirdparty%2Flxc.git

macro: add STRLITERALLEN() and STRARRAYLEN()

sizeof() implementation for string literals and string arrays that makes
it behave like strlen() for strings.

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
---

diff --git a/src/lxc/macro.h b/src/lxc/macro.h
index 3ff40648a..52acfee80 100644
--- a/src/lxc/macro.h
+++ b/src/lxc/macro.h
@@ -348,4 +348,7 @@ extern int __build_bug_on_failed;
 #define LXC_INVALID_UID ((uid_t)-1)
 #define LXC_INVALID_GID ((gid_t)-1)
 
+#define STRLITERALLEN(x) (sizeof(""x"") - 1)
+#define STRARRAYLEN(x) (sizeof(x) - 1)
+
 #endif /* __LXC_MACRO_H */