feat: add fakeroot with patch limit

fakeroot/.SRCINFO

@@ -0,0 +1,22 @@
+pkgbase = fakeroot
+	pkgdesc = Tool for simulating superuser privileges
+	pkgver = 1.31
+	pkgrel = 3
+	url = https://tracker.debian.org/pkg/fakeroot
+	install = fakeroot.install
+	arch = x86_64
+	license = GPL
+	checkdepends = sharutils
+	makedepends = systemd
+	makedepends = po4a
+	depends = glibc
+	depends = filesystem
+	depends = sed
+	depends = util-linux
+	depends = sh
+	source = https://deb.debian.org/debian/pool/main/f/fakeroot/fakeroot_1.31.orig.tar.gz
+	source = optimize-fd-closing.patch
+	sha256sums = 63886d41e11c56c7170b9d9331cca086421b350d257338ef14daad98f77e202f
+	sha256sums = 848d4157c6332c387df229beb5645223b5adce11d9ba9002e70322564447465a
+
+pkgname = fakeroot

fakeroot/PKGBUILD

@@ -0,0 +1,54 @@
+# Maintainer:  Bartłomiej Piotrowski <bpiotrowski@archlinux.org>
+# Contributor: Allan McRae <allan@archlinux.org>
+# Contributor: Jochem Kossen <j.kossen@home.nl>
+
+pkgname=fakeroot
+pkgver=1.31
+pkgrel=3
+pkgdesc='Tool for simulating superuser privileges'
+arch=('x86_64')
+license=('GPL')
+url='https://tracker.debian.org/pkg/fakeroot'
+install=fakeroot.install
+depends=('glibc' 'filesystem' 'sed' 'util-linux' 'sh')
+makedepends=('systemd' 'po4a')
+checkdepends=('sharutils')
+source=("https://deb.debian.org/debian/pool/main/f/$pkgname/${pkgname}_${pkgver}.orig.tar.gz"
+optimize-fd-closing.patch)
+sha256sums=('63886d41e11c56c7170b9d9331cca086421b350d257338ef14daad98f77e202f'
+            '848d4157c6332c387df229beb5645223b5adce11d9ba9002e70322564447465a')
+
+prepare() {
+  cd $pkgname-$pkgver
+  patch -Np1 < ../optimize-fd-closing.patch
+}
+
+build() {
+  cd $pkgname-$pkgver
+
+  ./configure --prefix=/usr \
+    --libdir=/usr/lib/libfakeroot \
+    --disable-static \
+    --with-ipc=sysv
+
+  make
+
+  cd doc
+  po4a -k 0 --rm-backups --variable 'srcdir=../doc/' po4a/po4a.cfg
+}
+
+check() {
+  cd $pkgname-$pkgver
+  make check
+}
+
+package() {
+  cd $pkgname-$pkgver
+  make DESTDIR="$pkgdir" install
+
+  install -dm0755 "$pkgdir/etc/ld.so.conf.d/"
+  echo '/usr/lib/libfakeroot' > "$pkgdir/etc/ld.so.conf.d/fakeroot.conf"
+
+  # install README for sysv/tcp usage
+  install -Dm0644 README "$pkgdir/usr/share/doc/$pkgname/README"
+}

fakeroot/fakeroot.install

@@ -0,0 +1,13 @@
+#!/bin/sh
+
+post_install() {
+  usr/bin/ldconfig -r .
+}
+
+post_upgrade() {
+  usr/bin/ldconfig -r .
+}
+
+pre_remove() {
+  usr/bin/ldconfig -r .
+}

fakeroot/optimize-fd-closing.patch

@@ -0,0 +1,55 @@
+Description: Optimize file descriptor closing
+ Closing all the fds is a severe performance issue in containers when
+ ulimit is high. We fixed that in APT a long time ago, time to apply
+ the same fix here.
+Author: Julian Andres Klode <juliank@ubuntu.com>
+
+--- a/faked.c
++++ b/faked.c
+@@ -107,6 +107,7 @@
+ #ifdef HAVE_SYS_XATTR_H
+ #include <sys/xattr.h>
+ #endif
++#include <dirent.h>
+ #include <fcntl.h>
+ #include <ctype.h>
+ #include <stdio.h>
+@@ -1502,16 +1503,32 @@ int main(int argc, char **argv){
+     /* literally copied from the linux klogd code, go to background */
+     if ((pid=fork()) == 0){
+       int fl;
+-      int num_fds = getdtablesize();
++      DIR *dir;
+ 
+-      fflush(stdout);
++      dir = opendir("/proc/self/fd");
++      if (dir != NULL) {
++	    struct dirent *ent;
++		int dfd = dirfd(dir);
++	    while (ent = readdir(dir)) {
++		fl = atoi(ent->d_name);
++		if (fl >= 0 && fl != dfd)
++#ifdef FAKEROOT_FAKENET
++		    if (fl != sd)
++#endif /* FAKEROOT_FAKENET */
++			close(fl);
++	    }
++	    closedir(dir);
++      }
++      else {
++	  int num_fds = getdtablesize();
+ 
+-      /* This is the child closing its file descriptors. */
+-      for (fl= 0; fl <= num_fds; ++fl)
++	  /* This is the child closing its file descriptors. */
++	  for (fl= 0; fl <= num_fds; ++fl)
+ #ifdef FAKEROOT_FAKENET
+-	if (fl != sd)
++	    if (fl != sd)
+ #endif /* FAKEROOT_FAKENET */
+-	  close(fl);
++	      close(fl);
++      }
+       setsid();
+     } else {
+       printf("%li:%i\n",(long)FAKE_KEY,pid);