Add std-stream oneshot service

README.md

@@ -1 +1,6 @@
 Some s6 service definitions for third-party software on Slackware Linux.
+
+## busybox
+
+This directory contains scripts that can be used on embedded Linux systems
+(riscv32).

busybox/std-stream/dependencies

@@ -0,0 +1 @@
+procfs

busybox/std-stream/type

@@ -0,0 +1 @@
+oneshot

busybox/std-stream/up

@@ -0,0 +1,12 @@
+################################################
+# Create symlinks for standard streams in /dev #
+################################################
+
+if { ln -sf /proc/self/fd /dev/fd }
+forx STREAM { "0 stdin" "1 stdout" "2 stderr" }
+importas -Sus STREAM
+backtick ARGUMENTS {
+  printf "/proc/self/fd/%i /dev/%s" $STREAM
+}
+importas -Ssu ARGUMENTS
+ln -sf $ARGUMENTS