Add the ewaitfile function so init scripts can wait until sockts are created, Gentoo #175783.

man/runscript.8

@@ -22,7 +22,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.Dd Mar 19, 2008
+.Dd Jun 03, 2008
 .Dt RUNSCRIPT 8 SMM
 .Os OpenRC
 .Sh NAME
@@ -173,8 +173,9 @@ If
 does not equal 0 then output the string using
 .Ic eerror
 and !! in square brackets
-at the end of the line. Otherwise output ok in square brackets at the end of
-the line. The value of
+at the end of the line.
+Otherwise output ok in square brackets at the end of the line.
+The value of
 .Ar retval
 is returned.
 .It Ic ewend Ar retval Op Ar string
@@ -193,6 +194,14 @@ output when the environment variable
 .Va EINFO_VERBOSE
 is true.
 .Bl -tag -width indent
+.It Ic ewaitfile Ar timeout Ar file1 Ar file2 ...
+Wait for
+.Ar timeout
+seconds until all files exist.
+Returns 0 if all files exist, otherwise non zero.
+If
+.Ar timeout
+is less then 1 then we wait indefinitely.
 .It Ic is_newer_than Ar file1 Ar file2 ...
 If
 .Ar file1