#!/bin/sh
# Build script for xlibre-xserver (Meson, Template B) — Xvfb-only headless build.
#
# THE crux port of the desktop initiative. Builds ONLY the Xvfb DDX (headless
# software framebuffer): no hardware/DRM/GL, no udev/logind, no xorg/xephyr/etc.
# x11vnc (Task 7a) later bridges the Xvfb display to VNC.
#
# XLibre has BSD CI but no illumos/Hammerhead target, so this port carries
# Hammerhead portability patches in patches/ (applied below).
#
# Meson option notes (verified against this tree's meson_options.txt):
#   * -Dgbm / -Dxf86-input-null from the original manifest capture do NOT
#     exist as options in 25.1.8 and are intentionally dropped (gbm is only
#     ever probed as required:false, and the null input driver isn't an
#     option here). Intent preserved: Xvfb on, all hardware/GL/DRM off.
#   * -Dsha1=libcrypto uses base OpenSSL's libcrypto (find_library('crypto')
#     resolves /usr/lib/libcrypto.so; <openssl/sha.h> in base /usr/include).
#   * libdrm/pciaccess/epoxy/gbm are all probed required:false in meson.build,
#     so the -D*=false switches don't trip a hard missing-dependency error on
#     Hammerhead (none of those libs exist here). Verified by source read.
set -e

# Resolve the port dir (holds patches/) BEFORE cd'ing into the extracted source.
PORTDIR=$(CDPATH= cd -- "$(dirname -- "$0")" && pwd)

cd "$SRCDIR"

# --- Hammerhead/illumos portability patches (rationale in each patch header) ---
for p in "$PORTDIR"/patches/*.patch; do
    [ -f "$p" ] || continue
    echo "==> Applying patch: $(basename "$p")"
    patch -p1 < "$p"
done

export PKG_CONFIG_PATH="$PREFIX/lib/pkgconfig:$PREFIX/share/pkgconfig:/usr/lib/pkgconfig:$PKG_CONFIG_PATH"
# Template B illumos flags: __EXTENSIONS__ + _POSIX_PTHREAD_SEMANTICS select the
# XPG/POSIX prototypes (msg_control, *_r, etc.). coral's default CFLAGS is only
# "-O2 -pipe" and its LDFLAGS is just "-R$PREFIX/lib", so add the rest here.
export CFLAGS="${CFLAGS} -D__EXTENSIONS__ -D_POSIX_PTHREAD_SEMANTICS"
export LDFLAGS="${LDFLAGS} -L$PREFIX/lib -Wl,-R,$PREFIX/lib"

meson setup build \
    --prefix="$PREFIX" \
    --libdir=lib \
    --buildtype=release \
    -Dxvfb=true \
    -Dxorg=false -Dxephyr=false -Dxnest=false -Dxfbdev=false -Dxwin=false -Dxquartz=false \
    -Dglamor=false -Dglx=false -Dglx_dri=false \
    -Ddri1=false -Ddri2=false -Ddri3=false -Ddrm=false \
    -Dudev=false -Dudev_kms=false -Dhal=false \
    -Dsystemd_logind=false -Dsystemd_notify=false -Dseatd_libseat=false \
    -Dsuid_wrapper=false -Dxcsecurity=false -Dxselinux=false \
    -Dpciaccess=false -Dagp=false -Dint10=false -Dvgahw=false \
    -Dxf86bigfont=false -Dtests=false \
    -Ddocs=false -Ddevel-docs=false -Ddocs-pdf=false \
    -Dxf86-input-inputtest=false \
    -Ddtrace=false -Dlinux_acpi=false -Dlinux_apm=false \
    -Dsha1=libcrypto \
    -Dxkb_dir=/usr/local/share/X11/xkb \
    -Dxkb_bin_dir=/usr/local/bin \
    -Dxkb_output_dir=/var/lib/xkb

ninja -C build -j${JOBS:-1}
DESTDIR="$PKGDIR" ninja -C build install
# xlibre-xserver - XLibre X server, built Xvfb-only (headless software framebuffer)
# THE crux port of the desktop initiative. No hardware/DRM/GL DDX - just Xvfb,
# which x11vnc then bridges to VNC. XLibre has no illumos upstream target, so
# this port carries Hammerhead/illumos portability patches (see patches/).
# https://github.com/X11Libre/xserver

[package]
name = "xlibre-xserver"
version = "25.1.8"
release = 1
description = "XLibre X server (Xvfb-only headless build)"
url = "https://github.com/X11Libre/xserver"
license = "MIT"
maintainer = "Chris Tusa <chris.tusa@leafscale.com>"
arch = "x86_64"

[dependencies]
runtime = ["pixman", "libX11", "libXfont2", "libxkbfile", "libXau", "libXdmcp", "libXext", "font-util", "xkeyboard-config", "xkbcomp", "xauth"]
build = ["pixman", "xorgproto", "xtrans", "libXfont2", "libxkbfile", "font-util", "util-macros", "libX11", "libXau", "libXdmcp", "libXext", "libXfixes"]

[[source]]
file = "xlibre-xserver-25.1.8.tar.gz"
urls = ["https://github.com/X11Libre/xserver/archive/refs/tags/xlibre-xserver-25.1.8.tar.gz"]
checksum = "18091f53e8700801b61f0d20c30d850d1060cb31f6a0d2046249bb413809ae16"

[build]
parallel = true
Treat Hammerhead like Solaris/illumos in the os-layer meson build.

Meson derives host_machine.system() from uname sysname, which on Hammerhead
is "hammerhead", not "sunos". The os/ static library's Solaris branch (which
adds -lsocket/-lnsl and the _XOPEN_SOURCE/__EXTENSIONS__ defines needed for
struct msghdr.msg_control and the XPG socket API) therefore never fires,
producing undefined socket()/gethostbyname() symbols at link time. Hammerhead
IS illumos, so extend the guard to match its sysname.

--- a/os/meson.build
+++ b/os/meson.build
@@ -63,7 +63,7 @@
 os_c_args = []
 
 # eg. struct msghdr -> msg_control 
-if host_machine.system() == 'sunos'
+if host_machine.system() == 'sunos' or host_machine.system() == 'hammerhead'
     os_c_args += '-D_XOPEN_SOURCE=1'
     os_c_args += '-D_XOPEN_SOURCE_EXTENDED=1'
     os_c_args += '-D__EXTENSIONS__'
Fix inverted re-arm check in the illumos event-ports (PORT_SOURCE_FD) ospoll
backend - the listening socket only ever accepted exactly one client for the
lifetime of the server.

Root cause (found 2026-07-22, hh-alpha9, Task 8 M5 integration test):
illumos event ports are one-shot per delivered event - once port_getn()
returns an event for a PORT_SOURCE_FD object, that fd is automatically
dissociated from the port and MUST be re-associated (port_associate() again,
done here via epoll_mod()) to keep receiving further events on it.

ospoll_wait()'s PORT-backend dispatch loop re-arms level-triggered fds with:

    if (osfd->trigger == ospoll_trigger_level &&
        !xorg_list_is_empty(&osfd->deleted)) {
        epoll_mod(ospoll, osfd);
    }

osfd->deleted is the intrusive list node ospoll_remove() links onto
ospoll->deleted when an fd is torn down (see the xorg_list_add call right
after port_dissociate() in ospoll_remove()). So xorg_list_is_empty(&osfd->deleted)
is true exactly when this specific fd has NOT just been removed by its own
callback - i.e. it's still a live, valid fd safe to re-arm.

The listening socket is a level-triggered fd that lives for the entire
server lifetime and is never removed, so its deleted node is always empty.
With the `!` in front, the condition only fires when the fd HAS just been
deleted (backwards - re-arming an fd that's about to be freed), and never
fires for the common "still alive" case. Net effect: the listen socket's
single initial port_associate() (done at ospoll_add time) gets consumed by
the first accept() event and is never renewed, so every connection after
the first sits unnoticed in the kernel accept backlog forever.

Confirmed via truss -p <Xvfb pid>: after the first client's full connection
setup, port_getn() goes back to sleeping and no further accept(4, ...) call
is ever made, even though a second client's connect() has already completed
at the socket layer (visible in `netstat -f unix` as a live but un-accepted
pair). Fix: drop the negation so accepting fds get re-armed, and only skip
fds that were actually just torn down.

--- a/os/ospoll.c
+++ b/os/ospoll.c
@@ -638,7 +638,7 @@
             osfd->callback(osfd->fd, xevents, osfd->data);

         if (osfd->trigger == ospoll_trigger_level &&
-            !xorg_list_is_empty(&osfd->deleted)) {
+            xorg_list_is_empty(&osfd->deleted)) {
             epoll_mod(ospoll, osfd);
         }
     }