log: add syswarn_set()

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

log: add syswarn_set()
c965e801 · Christian Brauner · d329cda7 · c965e801
Unverified Commit c965e801 authored Feb 23, 2021 by Christian Brauner
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log.h src/lxc/log.h +8 -0

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--- a/src/lxc/log.h
+++ b/src/lxc/log.h
@@ -530,6 +530,14 @@ __lxc_unused static inline void LXC_##LEVEL(struct lxc_log_locinfo* locinfo,	\
 		__internal_ret__;                             \
 	})

+#define syswarn_set(__ret__, format, ...)                     \
+	({                                                    \
+		typeof(__ret__) __internal_ret__ = (__ret__); \
+		errno = abs(__ret__);                         \
+		SYSWARN(format, ##__VA_ARGS__);               \
+		__internal_ret__;                             \
+	})
+
 #define log_error(__ret__, format, ...)                       \
 	({                                                    \
 		typeof(__ret__) __internal_ret__ = (__ret__); \