From 452dc6b5ef39d3a9c26208d960085fe992f4c3b7 Mon Sep 17 00:00:00 2001
From: Jim Meyering <meyering@redhat.com>
Date: Mon, 7 May 2012 11:20:45 +0200
Subject: maint: new function: usable_st_size

---
 src/system.h | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'src')

diff --git a/src/system.h b/src/system.h
index 93d48c57d..e3d31563c 100644
--- a/src/system.h
+++ b/src/system.h
@@ -601,6 +601,13 @@ bad_cast (char const *s)
   return (char *) s;
 }
 
+/* Return a boolean indicating whether SB->st_size is defined.  */
+static inline bool
+usable_st_size (struct stat const *sb)
+{
+  return S_ISREG (sb->st_mode) || S_TYPEISSHM (sb) || S_TYPEISTMO (sb);
+}
+
 void usage (int status) ATTRIBUTE_NORETURN;
 
 #define emit_cycle_warning(file_name)	\
-- 
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