systemd-selinux 233-7 update

7 files changed, 62 insertions, 179 deletions

diff --git a/.SRCINFO b/.SRCINFO
index 0631f44b6f87..1cf8fc4ffcac 100644
--- a/.SRCINFO
+++ b/.SRCINFO
@@ -1,6 +1,6 @@
 pkgbase = systemd-selinux
-	pkgver = 232
-	pkgrel = 8
+	pkgver = 233
+	pkgrel = 7
 	url = https://www.github.com/systemd/systemd
 	arch = i686
 	arch = x86_64
@@ -30,7 +30,7 @@ pkgbase = systemd-selinux
 	makedepends = git
 	makedepends = libselinux
 	options = strip
-	source = git+https://github.com/systemd/systemd.git#tag=v232
+	source = git+https://github.com/systemd/systemd.git#tag=v233
 	source = initcpio-hook-udev
 	source = initcpio-install-systemd
 	source = initcpio-install-udev
@@ -42,14 +42,11 @@ pkgbase = systemd-selinux
 	source = systemd-sysusers.hook
 	source = systemd-tmpfiles.hook
 	source = systemd-update.hook
-	source = 0001-disable-RestrictAddressFamilies-on-i686.patch
-	source = 0001-Revert-nspawn-try-to-bind-mount-resolved-s-resolv.co.patch
-	source = 0001-nspawn-don-t-hide-bind-tmp-mounts.patch
 	validpgpkeys = 63CDA1E5D3FC22B998D20DD6327F26951A015CC4
 	sha512sums = SKIP
 	sha512sums = f0d933e8c6064ed830dec54049b0a01e27be87203208f6ae982f10fb4eddc7258cb2919d594cbfb9a33e74c3510cfd682f3416ba8e804387ab87d1a217eb4b73
-	sha512sums = 52af734947a768758d5eb3f18e31a1cfec6699eca6fa10e40b90c7f11991509186c0a696e3490af3eaba80064ea4cb93e041579abf05addf072d294300aa4b28
-	sha512sums = fec639de0d99967ed3e67289eff5ff78fff0c5829d350e73bed536a8391f1daa1d118d72dbdc1f480ffd33fc22b72f4817d0973bd09ec7f182fd26ad87b24355
+	sha512sums = 691acebb243b9cd7fb63272662f34bdb9aead710c69aee9361ab2322f9f108600ad5b0214fc00b7cb2d9c95db8abd748030625d60d6567efd98663c56ba28c65
+	sha512sums = a25b28af2e8c516c3a2eec4e64b8c7f70c21f974af4a955a4a9d45fd3e3ff0d2a98b4419fe425d47152d5acae77d64e69d8d014a7209524b75a81b0edb10bf3a
 	sha512sums = 61032d29241b74a0f28446f8cf1be0e8ec46d0847a61dadb2a4f096e8686d5f57fe5c72bcf386003f6520bc4b5856c32d63bf3efe7eb0bc0deefc9f68159e648
 	sha512sums = c416e2121df83067376bcaacb58c05b01990f4614ad9de657d74b6da3efa441af251d13bf21e3f0f71ddcb4c9ea658b81da3d915667dc5c309c87ec32a1cb5a5
 	sha512sums = 5a1d78b5170da5abe3d18fdf9f2c3a4d78f15ba7d1ee9ec2708c4c9c2e28973469bc19386f70b3cf32ffafbe4fcc4303e5ebbd6d5187a1df3314ae0965b25e75
@@ -58,9 +55,6 @@ pkgbase = systemd-selinux
 	sha512sums = 9d27d97f172a503f5b7044480a0b9ccc0c4ed5dbb2eb3b2b1aa929332c3bcfe38ef0c0310b6566f23b34f9c05b77035221164a7ab7677784c4a54664f12fca22
 	sha512sums = 0f4efddd25256e09c42b953caeee4b93eb49ecc6eaebf02e616b4dcbfdac9860c3d8a3d1a106325b2ebc4dbc6e08ac46702abcb67a06737227ccb052aaa2a067
 	sha512sums = 10190fba9f39a8f4b620a0829e0ba8ed63bb4dbeca712966011ee7807880d01ab2abff1a80baafeb6674db70526a473fe585db8190e864f318fc4d6068552618
-	sha512sums = 89f9b2d3918c679ce4f76c2b10dc7fcb7e04f1925a5f92542f06891de2a123a91df7eb67fd4ce71506a8132f5440b3560b7bb667e1c1813944b115c1dfe35e3f
-	sha512sums = b993a42c5534582631f7b379d54f6abc37e3aaa56ecf869a6d86ff14ae5a52628f4e447b6a30751bc1c14c30cec63a5c6d0aa268362d235ed477b639cac3a219
-	sha512sums = 68478403433aafc91a03fda5d83813d2ed1dfc6ab7416b2927a803314ecf826edcb6c659587e74df65de3ccb1edf958522f56ff9ac461a1f696b6dede1d4dd35
 
 pkgname = systemd-selinux
 	pkgdesc = system and service manager with SELinux support
@@ -91,9 +85,9 @@ pkgname = systemd-selinux
 	optdepends = systemd-sysvcompat: symlink package to provide sysvinit binaries
 	optdepends = polkit: allow administration as unprivileged user
 	provides = nss-myhostname
-	provides = systemd-tools=232
-	provides = udev=232
-	provides = systemd=232-8
+	provides = systemd-tools=233
+	provides = udev=233
+	provides = systemd=233-7
 	conflicts = nss-myhostname
 	conflicts = systemd-tools
 	conflicts = udev
@@ -122,15 +116,15 @@ pkgname = libsystemd-selinux
 	depends = libselinux
 	provides = libsystemd.so
 	provides = libudev.so
-	provides = libsystemd=232-8
+	provides = libsystemd=233-7
 	conflicts = libsystemd
 
 pkgname = systemd-sysvcompat-selinux
 	pkgdesc = sysvinit compat for systemd with SELinux support
 	license = GPL2
 	depends = systemd-selinux
-	provides = systemd-sysvcompat=232-8
-	provides = selinux-systemd-sysvcompat=232-8
+	provides = systemd-sysvcompat=233-7
+	provides = selinux-systemd-sysvcompat=233-7
 	conflicts = sysvinit
 	conflicts = systemd-sysvcompat
 	conflicts = selinux-systemd-sysvcompat
diff --git a/0001-Revert-nspawn-try-to-bind-mount-resolved-s-resolv.co.patch b/0001-Revert-nspawn-try-to-bind-mount-resolved-s-resolv.co.patch
deleted file mode 100644
index 5d47d01a463c..000000000000
--- a/0001-Revert-nspawn-try-to-bind-mount-resolved-s-resolv.co.patch
+++ /dev/null
@@ -1,62 +0,0 @@
-From 481712d9ee88395042f0640f272c1f87142bc0a8 Mon Sep 17 00:00:00 2001
-From: Dave Reisner <dreisner@archlinux.org>
-Date: Wed, 9 Nov 2016 11:14:03 -0500
-Subject: [PATCH] Revert "nspawn: try to bind mount resolved's resolv.conf
- snippet into the container"
-
-This reverts commit 3539724c26a1b2b00c4eb3c004b635a4b8647de6.
----
- src/nspawn/nspawn.c | 27 ++++++++-------------------
- 1 file changed, 8 insertions(+), 19 deletions(-)
-
-diff --git a/src/nspawn/nspawn.c b/src/nspawn/nspawn.c
-index c8b18bc..93df7c6 100644
---- a/src/nspawn/nspawn.c
-+++ b/src/nspawn/nspawn.c
-@@ -1309,35 +1309,24 @@ static int setup_resolv_conf(const char *dest) {
-         /* Fix resolv.conf, if possible */
-         where = prefix_roota(dest, "/etc/resolv.conf");
- 
--        if (access("/usr/lib/systemd/resolv.conf", F_OK) >= 0) {
--                /* resolved is enabled on the host. In this, case bind mount its static resolv.conf file into the
--                 * container, so that the container can use the host's resolver. Given that network namespacing is
--                 * disabled it's only natural of the container also uses the host's resolver. It also has the big
--                 * advantage that the container will be able to follow the host's DNS server configuration changes
--                 * transparently. */
--
--                r = mount_verbose(LOG_WARNING, "/usr/lib/systemd/resolv.conf", where, NULL, MS_BIND, NULL);
--                if (r >= 0)
--                        return mount_verbose(LOG_ERR, NULL, where, NULL,
--                                             MS_BIND|MS_REMOUNT|MS_RDONLY|MS_NOSUID|MS_NODEV, NULL);
--        }
--
--        /* If that didn't work, let's copy the file */
-         r = copy_file("/etc/resolv.conf", where, O_TRUNC|O_NOFOLLOW, 0644, 0);
-         if (r < 0) {
--                /* If the file already exists as symlink, let's suppress the warning, under the assumption that
--                 * resolved or something similar runs inside and the symlink points there.
-+                /* If the file already exists as symlink, let's
-+                 * suppress the warning, under the assumption that
-+                 * resolved or something similar runs inside and the
-+                 * symlink points there.
-                  *
--                 * If the disk image is read-only, there's also no point in complaining.
-+                 * If the disk image is read-only, there's also no
-+                 * point in complaining.
-                  */
-                 log_full_errno(IN_SET(r, -ELOOP, -EROFS) ? LOG_DEBUG : LOG_WARNING, r,
--                               "Failed to copy /etc/resolv.conf to %s, ignoring: %m", where);
-+                               "Failed to copy /etc/resolv.conf to %s: %m", where);
-                 return 0;
-         }
- 
-         r = userns_lchown(where, 0, 0);
-         if (r < 0)
--                log_warning_errno(r, "Failed to chown /etc/resolv.conf, ignoring: %m");
-+                log_warning_errno(r, "Failed to chown /etc/resolv.conf: %m");
- 
-         return 0;
- }
--- 
-2.10.2
-
diff --git a/0001-disable-RestrictAddressFamilies-on-i686.patch b/0001-disable-RestrictAddressFamilies-on-i686.patch
deleted file mode 100644
index 27e6f4fb0819..000000000000
--- a/0001-disable-RestrictAddressFamilies-on-i686.patch
+++ /dev/null
@@ -1,30 +0,0 @@
-From ff59e06f9423af0532aaeedf931474823f764875 Mon Sep 17 00:00:00 2001
-From: Dave Reisner <dreisner@archlinux.org>
-Date: Wed, 9 Nov 2016 08:00:26 -0500
-Subject: [PATCH] disable RestrictAddressFamilies on i686
-
-Shit's broke, yo.
-
-https://github.com/systemd/systemd/issues/4575
----
- src/core/execute.c | 4 ++++
- 1 file changed, 4 insertions(+)
-
-diff --git a/src/core/execute.c b/src/core/execute.c
-index f666f7c..7d09154 100644
---- a/src/core/execute.c
-+++ b/src/core/execute.c
-@@ -1254,6 +1254,10 @@ static int apply_address_families(const Unit* u, const ExecContext *c) {
-         Iterator i;
-         int r;
- 
-+#if defined(__i386__)
-+        return 0;
-+#endif
-+
-         assert(c);
- 
-         if (skip_seccomp_unavailable(u, "RestrictAddressFamilies="))
--- 
-2.10.2
-
diff --git a/0001-nspawn-don-t-hide-bind-tmp-mounts.patch b/0001-nspawn-don-t-hide-bind-tmp-mounts.patch
deleted file mode 100644
index a5336ece5730..000000000000
--- a/0001-nspawn-don-t-hide-bind-tmp-mounts.patch
+++ /dev/null
@@ -1,26 +0,0 @@
-From 7ec42a45410cb27140292d85ebb0e4b6dcea5555 Mon Sep 17 00:00:00 2001
-From: Dave Reisner <dreisner@archlinux.org>
-Date: Wed, 7 Dec 2016 13:45:48 -0500
-Subject: [PATCH] nspawn: don't hide --bind=/tmp/* mounts
-
-This is a v232-applicable version of upstream c9fd987279a462e.
----
- src/nspawn/nspawn-mount.c | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/src/nspawn/nspawn-mount.c b/src/nspawn/nspawn-mount.c
-index 115de64..2dabe2a 100644
---- a/src/nspawn/nspawn-mount.c
-+++ b/src/nspawn/nspawn-mount.c
-@@ -382,7 +382,7 @@ int mount_all(const char *dest,
-                 { "tmpfs",               "/dev",                "tmpfs", "mode=755",  MS_NOSUID|MS_STRICTATIME,                                  true,  false, false },
-                 { "tmpfs",               "/dev/shm",            "tmpfs", "mode=1777", MS_NOSUID|MS_NODEV|MS_STRICTATIME,                         true,  false, false },
-                 { "tmpfs",               "/run",                "tmpfs", "mode=755",  MS_NOSUID|MS_NODEV|MS_STRICTATIME,                         true,  false, false },
--                { "tmpfs",               "/tmp",                "tmpfs", "mode=1777", MS_STRICTATIME,                                            true,  true,  false },
-+                { "tmpfs",               "/tmp",                "tmpfs", "mode=1777", MS_STRICTATIME,                                            true,  false,  false },
- #ifdef HAVE_SELINUX
-                 { "/sys/fs/selinux",     "/sys/fs/selinux",     NULL,     NULL,       MS_BIND,                                                   false, false, false },  /* Bind mount first */
-                 { NULL,                  "/sys/fs/selinux",     NULL,     NULL,       MS_BIND|MS_RDONLY|MS_NOSUID|MS_NOEXEC|MS_NODEV|MS_REMOUNT, false, false, false },  /* Then, make it r/o */
--- 
-2.10.2
-
diff --git a/PKGBUILD b/PKGBUILD
index 1e57ec7b55b4..89141b9d4254 100644
--- a/PKGBUILD
+++ b/PKGBUILD
@@ -6,8 +6,8 @@
 
 pkgbase=systemd-selinux
 pkgname=('systemd-selinux' 'libsystemd-selinux' 'systemd-sysvcompat-selinux')
-pkgver=232
-pkgrel=8
+pkgver=233
+pkgrel=7
 arch=('i686' 'x86_64')
 url="https://www.github.com/systemd/systemd"
 groups=('selinux')
@@ -30,14 +30,11 @@ source=("git+https://github.com/systemd/systemd.git#tag=v$pkgver"
         'systemd-hwdb.hook'
         'systemd-sysusers.hook'
         'systemd-tmpfiles.hook'
-        'systemd-update.hook'
-        '0001-disable-RestrictAddressFamilies-on-i686.patch'
-        '0001-Revert-nspawn-try-to-bind-mount-resolved-s-resolv.co.patch'
-        '0001-nspawn-don-t-hide-bind-tmp-mounts.patch')
+        'systemd-update.hook')
 sha512sums=('SKIP'
             'f0d933e8c6064ed830dec54049b0a01e27be87203208f6ae982f10fb4eddc7258cb2919d594cbfb9a33e74c3510cfd682f3416ba8e804387ab87d1a217eb4b73'
-            '52af734947a768758d5eb3f18e31a1cfec6699eca6fa10e40b90c7f11991509186c0a696e3490af3eaba80064ea4cb93e041579abf05addf072d294300aa4b28'
-            'fec639de0d99967ed3e67289eff5ff78fff0c5829d350e73bed536a8391f1daa1d118d72dbdc1f480ffd33fc22b72f4817d0973bd09ec7f182fd26ad87b24355'
+            '691acebb243b9cd7fb63272662f34bdb9aead710c69aee9361ab2322f9f108600ad5b0214fc00b7cb2d9c95db8abd748030625d60d6567efd98663c56ba28c65'
+            'a25b28af2e8c516c3a2eec4e64b8c7f70c21f974af4a955a4a9d45fd3e3ff0d2a98b4419fe425d47152d5acae77d64e69d8d014a7209524b75a81b0edb10bf3a'
             '61032d29241b74a0f28446f8cf1be0e8ec46d0847a61dadb2a4f096e8686d5f57fe5c72bcf386003f6520bc4b5856c32d63bf3efe7eb0bc0deefc9f68159e648'
             'c416e2121df83067376bcaacb58c05b01990f4614ad9de657d74b6da3efa441af251d13bf21e3f0f71ddcb4c9ea658b81da3d915667dc5c309c87ec32a1cb5a5'
             '5a1d78b5170da5abe3d18fdf9f2c3a4d78f15ba7d1ee9ec2708c4c9c2e28973469bc19386f70b3cf32ffafbe4fcc4303e5ebbd6d5187a1df3314ae0965b25e75'
@@ -45,23 +42,22 @@ sha512sums=('SKIP'
             '2c1f765e7cefc50f07ad994634ea25d9396e6b9c0de46e58f18377e642a471517a0dbf5eb547070a38c6ecf84ec8e030f650a6cee010871cd7a466a32534adda'
             '9d27d97f172a503f5b7044480a0b9ccc0c4ed5dbb2eb3b2b1aa929332c3bcfe38ef0c0310b6566f23b34f9c05b77035221164a7ab7677784c4a54664f12fca22'
             '0f4efddd25256e09c42b953caeee4b93eb49ecc6eaebf02e616b4dcbfdac9860c3d8a3d1a106325b2ebc4dbc6e08ac46702abcb67a06737227ccb052aaa2a067'
-            '10190fba9f39a8f4b620a0829e0ba8ed63bb4dbeca712966011ee7807880d01ab2abff1a80baafeb6674db70526a473fe585db8190e864f318fc4d6068552618'
-            '89f9b2d3918c679ce4f76c2b10dc7fcb7e04f1925a5f92542f06891de2a123a91df7eb67fd4ce71506a8132f5440b3560b7bb667e1c1813944b115c1dfe35e3f'
-            'b993a42c5534582631f7b379d54f6abc37e3aaa56ecf869a6d86ff14ae5a52628f4e447b6a30751bc1c14c30cec63a5c6d0aa268362d235ed477b639cac3a219'
-            '68478403433aafc91a03fda5d83813d2ed1dfc6ab7416b2927a803314ecf826edcb6c659587e74df65de3ccb1edf958522f56ff9ac461a1f696b6dede1d4dd35')
+            '10190fba9f39a8f4b620a0829e0ba8ed63bb4dbeca712966011ee7807880d01ab2abff1a80baafeb6674db70526a473fe585db8190e864f318fc4d6068552618')
 validpgpkeys=(
   '63CDA1E5D3FC22B998D20DD6327F26951A015CC4'  # Lennart Poettering
 )
 
 _backports=(
-  '843d5baf6aad6c53fc00ea8d95d83209a4f92de1'  # core: don't use the unified hierarchy for the systemd cgroup yet (#4628)
-  'abd67ce74858491565cde157c7b08fda43d3279c'  # basic/virt: fix userns check on CONFIG_USER_NS=n kernel (#4651)
-  '4318abe8d26e969ebdb97744a63ab900233a0185'  # build-sys: do not install ctrl-alt-del.target symlink twice
-  'd112eae7da77899be245ab52aa1747d4675549f1'  # device: Avoid calling unit_free(NULL) in device setup logic (#4748)
-  'cfed63f60dd7412c199652825ed172c319b02b3c'  # nspawn: fix exit code for --help and --version (#4609)
-  '3099caf2b5bb9498b1d0227c40926435ca81f26f'  # journal: make sure to initially populate the space info cache (#4807)
-  '3d4cf7de48a74726694abbaa09f9804b845ff3ba'  # build-sys: check for lz4 in the old and new numbering scheme (#4717)
-  'c9f7b4d356a453a01aa77a6bb74ca7ef49732c08'  # build-sys: add check for gperf lookup function signature (#5055)
+  # build-sys: make RPM macros installation path configurable
+  'ff2e33db54719bfe8feea833571652318c6d197c'
+  # resolved: do not start LLMNR or mDNS stack when no network enables them
+  '2c7ef56459bf6fe7761595585aa4eed5cd183f27^..2c7ef56459bf6fe7761595585aa4eed5cd183f27^2'
+  # networkd: RFC compliant autonomous prefix handling (#5636)
+  '6554550f35a7976f9110aff94743d3576d5f02dd'
+  # shared: fix keyring handling in ask-password-api
+  '2c390a919055af01b3ab6cce6dd0f97fb4784460'
+  # resolved: bugfix of null pointer p->question dereferencing (#6020) (CVE-2017-9217)
+  'a924f43f30f9c4acaf70618dd2a055f8b0f166be'
 )
 
 _validate_tag() {
@@ -96,21 +92,21 @@ prepare() {
 
   _validate_tag || return
 
-  if (( ${#_backports[*]} > 0 )); then
-    git cherry-pick -n "${_backports[@]}"
-  fi
-
-  # https://github.com/systemd/systemd/issues/4789
-  patch -Np1 <../0001-nspawn-don-t-hide-bind-tmp-mounts.patch
-
-  # these patches aren't upstream, but they make v232 more useable.
-
-  # https://github.com/systemd/systemd/issues/4575
-  patch -Np1 <../0001-disable-RestrictAddressFamilies-on-i686.patch
+  local _commit
+  for _commit in "${_backports[@]}"; do
+    git cherry-pick -n "$_commit"
+  done
 
-  # https://github.com/systemd/systemd/issues/4595
-  # https://github.com/systemd/systemd/issues/3826
-  patch -Np1 <../0001-Revert-nspawn-try-to-bind-mount-resolved-s-resolv.co.patch
+  # nss-resolve: drop the internal fallback to libnss_dns
+  git show 5486a31d287f26bcd7c0a4eb2abfa4c074b985f1 -- \
+    Makefile.am src/nss-resolve/nss-resolve.c | git apply --index
+  
+  # Resolved packet size (#6214) (FS#54619, CVE-2017-9445)
+  git show '751ca3f1de316ca79b60001334dbdf54077e1d01' \
+    'db848813bae4d28c524b3b6a7dad135e426659ce' \
+    '88795538726a5bbfd9efc13d441cb05e1d7fc139' \
+    '64a21fdaca7c93f1c30b21f6fdbd2261798b161a' \
+    -- . ':!src/resolve/meson.build'  | git apply --index
 
   ./autogen.sh
 }
@@ -137,6 +133,9 @@ build() {
     --with-default-dnssec=no
     --with-dbuspolicydir=/usr/share/dbus-1/system.d
     --without-kill-user-processes
+    --with-rpmmacrosdir=no
+    # TODO(dreisner): consider changing this to unified
+    --with-default-hierarchy=hybrid
   )
 
   ./configure "${configure_options[@]}"
@@ -178,9 +177,6 @@ package_systemd-selinux() {
   # post_install.
   rm -r "$pkgdir/etc/systemd/system/"*.wants
 
-  # get rid of RPM macros
-  rm -r "$pkgdir/usr/lib/rpm"
-
   # add back tmpfiles.d/legacy.conf
   install -m644 "${pkgbase/-selinux}/tmpfiles.d/legacy.conf" "$pkgdir/usr/lib/tmpfiles.d"
 
@@ -201,18 +197,26 @@ package_systemd-selinux() {
   chown root:systemd-journal "$pkgdir/var/log/journal"
   chmod 2755 "$pkgdir/var/log/journal"
 
+  # match directory owner/group and mode from extra/polkit
+  chown root:102 "$pkgdir"/usr/share/polkit-1/rules.d
+  chmod 0750     "$pkgdir"/usr/share/polkit-1/rules.d
+
   # we'll create this on installation
   rmdir "$pkgdir/var/log/journal/remote"
 
   # ship default policy to leave services disabled
   echo 'disable *' >"$pkgdir"/usr/lib/systemd/system-preset/99-default.preset
 
-  ### manpages shipped with systemd-sysvcompat
+  # manpages shipped with systemd-sysvcompat
   rm "$pkgdir"/usr/share/man/man8/{telinit,halt,reboot,poweroff,runlevel,shutdown}.8
 
-  ### runtime libraries shipped with libsystemd
+  # runtime libraries shipped with libsystemd
   rm "$pkgdir"/usr/lib/lib{nss,systemd,udev}*.so*
 
+  # allow core/filesystem to pristine nsswitch.conf
+  rm "$pkgdir/usr/share/factory/etc/nsswitch.conf"
+  sed -i '/^C \/etc\/nsswitch\.conf/d' "$pkgdir/usr/lib/tmpfiles.d/etc.conf"
+
   # add example bootctl configuration
   install -Dm644 "$srcdir/arch.conf" "$pkgdir"/usr/share/systemd/bootctl/arch.conf
   install -Dm644 "$srcdir/loader.conf" "$pkgdir"/usr/share/systemd/bootctl/loader.conf
diff --git a/initcpio-install-systemd b/initcpio-install-systemd
index f6d0afdb8285..e53376ab4fd4 100644
--- a/initcpio-install-systemd
+++ b/initcpio-install-systemd
@@ -160,9 +160,11 @@ build() {
     add_symlink "/usr/lib/systemd/system/default.target" "initrd.target"
     add_symlink "/usr/lib/systemd/system/ctrl-alt-del.target" "reboot.target"
 
-    # udev wants /etc/group since it doesn't launch with --resolve-names=never
-    add_file "/etc/nsswitch.conf"
     add_binary "$(readlink -f /usr/lib/libnss_files.so)"
+    printf '%s\n' >"$BUILDROOT/etc/nsswitch.conf" \
+        'passwd: files' \
+        'group: files' \
+        'shadow: files'
 
     echo "root:x:0:0:root:/:/bin/sh" >"$BUILDROOT/etc/passwd"
     echo "root:x:0:root" >"$BUILDROOT/etc/group"
diff --git a/initcpio-install-udev b/initcpio-install-udev
index 7f0301a48856..31d9827129e7 100644
--- a/initcpio-install-udev
+++ b/initcpio-install-udev
@@ -19,9 +19,10 @@ build() {
 
 help() {
     cat <<HELPEOF
-This hook will use udev to create your root device node and detect the needed
-modules for your root device. It is also required for firmware loading in
-initramfs. It is recommended to use this hook.
+This hook adds the udev daemon to the initramfs, allowing for dynamic loading
+of modules and reliable detection of the root device via tags (e.g. UUID or
+LABEL). Do not remove this hook unless you are using the systemd hook, or you
+know what you're doing.
 HELPEOF
 }