scripts/fuse/README.adoc, scripts/fuse/execfuse-nut/readdir: integrat…

…e with NIT-prepared environments [networkupstools#2591]

Signed-off-by: Jim Klimov <[email protected]>

scripts/fuse/README.adoc

@@ -38,7 +38,28 @@ Installation:
 
 That's about it, an `execfuse` binary should appear.
 
-To run with the PoC scripts here, assuming a built NUT in `~/nut` location:
+NOTE: Examples below assume a built NUT in `~/nut` location, and a temporary
+mount point in `/tmp/nut-fuse`.
+
+You can also prepare an enviroment using NUT Integration Tests (NIT) scripts:
+----
+:; ( cd ~/nut && DEBUG_SLEEP=600 make check-NIT ) &
+
+# ...wait a few seconds for it to say the sandbox is ready
+:; . "${HOME}/nut/tests/NIT/tmp/etc/NIT.env"
+----
+
+Before mounting the FUSE file system, you can also request to debug the PoC
+scripts:
+----
+:; NUT_DEBUG_FUSE=true
+:; export NUT_DEBUG_FUSE
+
+# After running some queries, so the log-files to watch appear:
+:; tail -F /tmp/nut-debug-fuse-*.log &
+----
+
+To run with the PoC scripts here:
 
 ----
 :; mkdir -p /tmp/nut-fuse

scripts/fuse/execfuse-nut/readdir

@@ -37,7 +37,12 @@ case "$1" in
         ;;
     /by-server)
         print_dots
-        printf 'ino=1 mode=drwxr-xr-x nlink=16 uid=0 gid=0 rdev=0 size=16 blksize=512 blocks=1 atime=0 mtime=0 ctime=0 %s\0' "localhost:3493"
+        printf 'ino=1 mode=drwxr-xr-x nlink=16 uid=0 gid=0 rdev=0 size=16 blksize=512 blocks=1 atime=0 mtime=0 ctime=0 %s\0' "localhost"
+        # Primarily this is a value arranged by `make check-NIT`:
+        set -x
+        if [ -n "${NUT_PORT-}" ] && [ x"${NUT_PORT}" != x3493 ]; then
+            printf 'ino=1 mode=drwxr-xr-x nlink=16 uid=0 gid=0 rdev=0 size=16 blksize=512 blocks=1 atime=0 mtime=0 ctime=0 %s\0' "localhost:${NUT_PORT}"
+        fi
         ;;
     /by-server/*/*/*) # Don't want subdirs here
         exit 2 # ENOENT