From bf57008f3a5c99eeb9525f80e3c5e18c189514ec Mon Sep 17 00:00:00 2001
From: Sonyu Annino <92148685+AnninoDr4@users.noreply.github.com>
Date: Wed, 22 Mar 2023 04:32:31 +0000
Subject: [PATCH] [experimental] new option `--ashmem-memfd` #36

https://github.com/termux/proot/issues/258
---
 README.md                 | 1 +
 udroid/src/help_udroid.sh | 1 +
 udroid/src/udroid.sh      | 9 +++++++++
 3 files changed, 11 insertions(+)

diff --git a/README.md b/README.md
index 73887eb..838dadd 100644
--- a/README.md
+++ b/README.md
@@ -84,6 +84,7 @@ options:
   --name: Allows        the user to specify a custom name for the filesystem to install
   --bind or -b:         Allows the user to specify extra mount points for the filesystem.
   --isolated:           Creates an isolated environment for the filesystem.
+
   --fix-low-ports:      Fixes low ports for the filesystem.
   --no-shared-tmp:      Disables shared tmp for the filesystem.
   --no-link2symlink:    Disables link2symlink for the filesystem.
diff --git a/udroid/src/help_udroid.sh b/udroid/src/help_udroid.sh
index 628bc1d..ee90c87 100644
--- a/udroid/src/help_udroid.sh
+++ b/udroid/src/help_udroid.sh
@@ -17,6 +17,7 @@ help_login() {
     echo "  --name: Allows        the user to specify a custom name for the filesystem to install"
     echo "  --bind or -b:         Allows the user to specify extra mount points for the filesystem."
     echo "  --isolated:           Creates an isolated environment for the filesystem."
+    echo "  --ashmem-memfd | --memfd     enable support for memfd emulation through ashmem ( experimental )"
     echo "  --fix-low-ports:      Fixes low ports for the filesystem."
     echo "  --no-shared-tmp:      Disables shared tmp for the filesystem."
     echo "  --no-link2symlink:    Disables link2symlink for the filesystem."
diff --git a/udroid/src/udroid.sh b/udroid/src/udroid.sh
index 728990f..bfdeddc 100755
--- a/udroid/src/udroid.sh
+++ b/udroid/src/udroid.sh
@@ -280,6 +280,7 @@ login() {
     local no_cap_last_cap=false
     local no_pulseserver=false
     local no_android_shmem=false
+    local ashmem_memfd=false
     local no_fake_root_id=false
     local fix_low_ports=false
     local make_host_tmp_shared=true # its better to run with shared tmp
@@ -369,6 +370,9 @@ login() {
             --no-android-shmem)
                 no_android_shmem=true; shift
                 ;;
+            --ashmem-memfd | --memfd)
+                 ashmem_memfd=true; shift
+                ;;
             --no-kill-on-exit)
                 no_kill_on_exit=true; shift
                 ;;
@@ -627,6 +631,11 @@ login() {
                         --exit-idle-time=-1
         fi
 
+        # android shmem memfd
+        if $ashmem_memfd; then
+            set -- "--ashmem-memfd" "$@"
+        fi
+
         exec proot "$@"
     else
         ELOG "ERROR: $distro not found or installed"