Add examples/ subtree

2 files changed, 22 insertions, 0 deletions

diff --git a/examples/ROOT/img/tmpfs/service/s6-svscan-log/README b/examples/ROOT/img/tmpfs/service/s6-svscan-log/README
new file mode 100644
index 0000000..282d4f0
--- /dev/null
+++ b/examples/ROOT/img/tmpfs/service/s6-svscan-log/README
@@ -0,0 +1,9 @@
+This service reads from the "fifo" named pipe and logs
+what it reads to the /tmp/uncaught-logs log directory.
+The whole supervision tree has its stderr redirected to "fifo",
+as well as services that do not have their own logger.
+So, /tmp/uncaught-logs is the catch-all logger: logs that aren't
+caught anywhere else end up there.
+
+ You should create the "fifo" named pipe in this directory,
+belonging to nobody:nogroup with rights 0622.
diff --git a/examples/ROOT/img/tmpfs/service/s6-svscan-log/run b/examples/ROOT/img/tmpfs/service/s6-svscan-log/run
new file mode 100755
index 0000000..a55a822
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+++ b/examples/ROOT/img/tmpfs/service/s6-svscan-log/run
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+#!/command/execlineb -P
+redirfd -w 2 /dev/console
+redirfd -rnb 0 fifo
+s6-setuidgid nobody
+exec -c
+s6-log -bpt /tmp/uncaught-logs
+
+#  The -p option is important:
+# even if s6-svscan is told to kill everything,
+# you do not want this logger to die.
+#  The -b option ensures s6-log processes lines one
+# at a time, so it doesn't eat up too much memory
+# in case of a problem spike.