move checked FILE functions to util.c

while they are used only in sync.c, they are conceptually low-level.

src/common.h

@@ -141,6 +141,14 @@ void ATTR_PRINTFLIKE(1, 0) vsys_error( const char *, va_list va );
 void ATTR_PRINTFLIKE(1, 2) sys_error( const char *, ... );
 void flushn( void );
 
+#if !defined(_POSIX_SYNCHRONIZED_IO) || _POSIX_SYNCHRONIZED_IO <= 0
+# define fdatasync fsync
+#endif
+
+void ATTR_PRINTFLIKE(2, 0) vFprintf( FILE *f, const char *msg, va_list va );
+void ATTR_PRINTFLIKE(2, 3) Fprintf( FILE *f, const char *msg, ... );
+void Fclose( FILE *f, int safe );
+
 typedef struct string_list {
 	struct string_list *next;
 	char string[1];

src/sync.c

@@ -14,10 +14,6 @@
 #include <errno.h>
 #include <sys/stat.h>
 
-#if !defined(_POSIX_SYNCHRONIZED_IO) || _POSIX_SYNCHRONIZED_IO <= 0
-# define fdatasync fsync
-#endif
-
 #define JOURNAL_VERSION "4"
 
 channel_conf_t global_conf;
@@ -32,37 +28,6 @@ int trash_total[2], trash_done[2];
 
 const char *str_fn[] = { "far side", "near side" }, *str_hl[] = { "push", "pull" };
 
-static void
-Fclose( FILE *f, int safe )
-{
-	if ((safe && (fflush( f ) || (UseFSync && fdatasync( fileno( f ) )))) || fclose( f ) == EOF) {
-		sys_error( "Error: cannot close file" );
-		exit( 1 );
-	}
-}
-
-static void ATTR_PRINTFLIKE(2, 0)
-vFprintf( FILE *f, const char *msg, va_list va )
-{
-	int r;
-
-	r = vfprintf( f, msg, va );
-	if (r < 0) {
-		sys_error( "Error: cannot write file" );
-		exit( 1 );
-	}
-}
-
-static void ATTR_PRINTFLIKE(2, 3)
-Fprintf( FILE *f, const char *msg, ... )
-{
-	va_list va;
-
-	va_start( va, msg );
-	vFprintf( f, msg, va );
-	va_end( va );
-}
-
 
 /* Keep the mailbox driver flag definitions in sync: */
 /* grep for MAILBOX_DRIVER_FLAG */

src/util.c

@@ -173,6 +173,37 @@ sys_error( const char *msg, ... )
 	va_end( va );
 }
 
+void
+vFprintf( FILE *f, const char *msg, va_list va )
+{
+	int r;
+
+	r = vfprintf( f, msg, va );
+	if (r < 0) {
+		sys_error( "Error: cannot write file" );
+		exit( 1 );
+	}
+}
+
+void
+Fprintf( FILE *f, const char *msg, ... )
+{
+	va_list va;
+
+	va_start( va, msg );
+	vFprintf( f, msg, va );
+	va_end( va );
+}
+
+void
+Fclose( FILE *f, int safe )
+{
+	if ((safe && (fflush( f ) || (UseFSync && fdatasync( fileno( f ) )))) || fclose( f ) == EOF) {
+		sys_error( "Error: cannot close file" );
+		exit( 1 );
+	}
+}
+
 void
 add_string_list_n( string_list_t **list, const char *str, uint len )
 {