From 786883cfa13e21f060ee6da6cabb94845f4349a0 Mon Sep 17 00:00:00 2001
From: Khem Raj <raj.khem@gmail.com>
Date: Mon, 14 Dec 2015 05:18:20 +0000
Subject: [PATCH 14/36] Make root's home directory configurable

OpenEmbedded has a configurable home directory for root. Allow
systemd to be built using its idea of what root's home directory
should be.

Upstream-Status: Denied
Upstream wants to have a unified hierarchy where everyone is
using the same root folder.
https://github.com/systemd/systemd/issues/541

Signed-off-by: Dan McGregor <dan.mcgregor@usask.ca>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
 Makefile.am                       | 2 ++
 configure.ac                      | 7 +++++++
 src/basic/user-util.c             | 4 ++--
 src/core/namespace.c              | 2 +-
 src/nspawn/nspawn.c               | 4 ++--
 units/console-shell.service.m4.in | 4 ++--
 units/emergency.service.in        | 4 ++--
 units/rescue.service.in           | 4 ++--
 8 files changed, 20 insertions(+), 11 deletions(-)

diff --git a/Makefile.am b/Makefile.am
index b3f3343..a99e8eb 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -202,6 +202,7 @@ AM_CPPFLAGS = \
 	-DLIBDIR=\"$(libdir)\" \
 	-DROOTLIBDIR=\"$(rootlibdir)\" \
 	-DROOTLIBEXECDIR=\"$(rootlibexecdir)\" \
+	-DROOTHOMEDIR=\"$(roothomedir)\" \
 	-DTEST_DIR=\"$(abs_top_srcdir)/test\" \
 	-I $(top_srcdir)/src \
 	-I $(top_builddir)/src/basic \
@@ -5713,6 +5714,7 @@ EXTRA_DIST += \
 substitutions = \
        '|rootlibexecdir=$(rootlibexecdir)|' \
        '|rootbindir=$(rootbindir)|' \
+       '|roothomedir=$(roothomedir)|' \
        '|bindir=$(bindir)|' \
        '|SYSTEMCTL=$(rootbindir)/systemctl|' \
        '|SYSTEMD_NOTIFY=$(rootbindir)/systemd-notify|' \
diff --git a/configure.ac b/configure.ac
index c5ab9d0..16c83bb 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1470,6 +1470,11 @@ AC_ARG_WITH([rootlibdir],
         [with_rootlibdir=${libdir}])
 AX_NORMALIZE_PATH([with_rootlibdir])
 
+AC_ARG_WITH([roothomedir],
+        AS_HELP_STRING([--with-roothomedir=DIR], [Home directory for the root user]),
+        [],
+        [with_roothomedir=/root])
+
 AC_ARG_WITH([pamlibdir],
         AS_HELP_STRING([--with-pamlibdir=DIR], [Directory for PAM modules]),
         [],
@@ -1553,6 +1558,7 @@ AC_SUBST([pamlibdir], [$with_pamlibdir])
 AC_SUBST([pamconfdir], [$with_pamconfdir])
 AC_SUBST([rootprefix], [$with_rootprefix])
 AC_SUBST([rootlibdir], [$with_rootlibdir])
+AC_SUBST([roothomedir], [$with_roothomedir])
 
 AC_CONFIG_FILES([
         Makefile
@@ -1643,6 +1649,7 @@ AC_MSG_RESULT([
         includedir:              ${includedir}
         lib dir:                 ${libdir}
         rootlib dir:             ${with_rootlibdir}
+        root home dir:           ${with_roothomedir}
         SysV init scripts:       ${SYSTEM_SYSVINIT_PATH}
         SysV rc?.d directories:  ${SYSTEM_SYSVRCND_PATH}
         Build Python:            ${PYTHON}
diff --git a/src/basic/user-util.c b/src/basic/user-util.c
index 19155bc..55672b3 100644
--- a/src/basic/user-util.c
+++ b/src/basic/user-util.c
@@ -122,7 +122,7 @@ int get_user_creds(
                         *gid = 0;
 
                 if (home)
-                        *home = "/root";
+                        *home = ROOTHOMEDIR;
 
                 if (shell)
                         *shell = "/bin/sh";
@@ -353,7 +353,7 @@ int get_home_dir(char **_h) {
         /* Hardcode home directory for root to avoid NSS */
         u = getuid();
         if (u == 0) {
-                h = strdup("/root");
+                h = strdup(ROOTHOMEDIR);
                 if (!h)
                         return -ENOMEM;
 
diff --git a/src/core/namespace.c b/src/core/namespace.c
index b573f00..0f70b14 100644
--- a/src/core/namespace.c
+++ b/src/core/namespace.c
@@ -409,7 +409,7 @@ int setup_namespace(
                         home_dir = strjoina("-", home_dir);
                         run_user_dir = prefix_roota(root_directory, "/run/user");
                         run_user_dir = strjoina("-", run_user_dir);
-                        root_dir = prefix_roota(root_directory, "/root");
+                        root_dir = prefix_roota(root_directory, ROOTHOMEDIR);
                         root_dir = strjoina("-", root_dir);
 
                         r = append_mounts(&m, STRV_MAKE(home_dir, run_user_dir, root_dir),
diff --git a/src/nspawn/nspawn.c b/src/nspawn/nspawn.c
index 65e65ec..12f0ee8 100644
--- a/src/nspawn/nspawn.c
+++ b/src/nspawn/nspawn.c
@@ -2564,7 +2564,7 @@ static int inner_child(
         if (envp[n_env])
                 n_env ++;
 
-        if ((asprintf((char**)(envp + n_env++), "HOME=%s", home ? home: "/root") < 0) ||
+        if ((asprintf((char**)(envp + n_env++), "HOME=%s", home ? home: ROOTHOMEDIR) < 0) ||
             (asprintf((char**)(envp + n_env++), "USER=%s", arg_user ? arg_user : "root") < 0) ||
             (asprintf((char**)(envp + n_env++), "LOGNAME=%s", arg_user ? arg_user : "root") < 0))
                 return log_oom();
@@ -2647,7 +2647,7 @@ static int inner_child(
 #endif /* HAVE_EXECVPE */
         else {
                 if (!arg_chdir)
-                        chdir(home ?: "/root");
+                        chdir(home ?: ROOTHOMEDIR);
 
                 execle("/bin/bash", "-bash", NULL, env_use);
                 execle("/bin/sh", "-sh", NULL, env_use);
diff --git a/units/console-shell.service.m4.in b/units/console-shell.service.m4.in
index a345ec2..3caae7d 100644
--- a/units/console-shell.service.m4.in
+++ b/units/console-shell.service.m4.in
@@ -15,8 +15,8 @@ After=rc-local.service
 Before=getty.target
 
 [Service]
-Environment=HOME=/root
-WorkingDirectory=-/root
+Environment=HOME=@roothomedir@
+WorkingDirectory=-@roothomedir@
 ExecStart=-@SULOGIN@
 ExecStopPost=-@SYSTEMCTL@ poweroff
 Type=idle
diff --git a/units/emergency.service.in b/units/emergency.service.in
index fb390ea..5623a57 100644
--- a/units/emergency.service.in
+++ b/units/emergency.service.in
@@ -14,8 +14,8 @@ Conflicts=rescue.service
 Before=shutdown.target
 
 [Service]
-Environment=HOME=/root
-WorkingDirectory=-/root
+Environment=HOME=@roothomedir@
+WorkingDirectory=-@roothomedir@
 ExecStartPre=-/bin/plymouth --wait quit
 ExecStartPre=-/bin/echo -e 'Welcome to emergency mode! After logging in, type "journalctl -xb" to view\\nsystem logs, "systemctl reboot" to reboot, "systemctl default" or ^D to\\ntry again to boot into default mode.'
 ExecStart=-/bin/sh -c "@SULOGIN@; @SYSTEMCTL@ --job-mode=fail --no-block default"
diff --git a/units/rescue.service.in b/units/rescue.service.in
index 92553f6..590ae17 100644
--- a/units/rescue.service.in
+++ b/units/rescue.service.in
@@ -14,8 +14,8 @@ After=sysinit.target plymouth-start.service
 Before=shutdown.target
 
 [Service]
-Environment=HOME=/root
-WorkingDirectory=-/root
+Environment=HOME=@roothomedir@
+WorkingDirectory=-@roothomedir@
 ExecStartPre=-/bin/plymouth quit
 ExecStartPre=-/bin/echo -e 'Welcome to rescue mode! After logging in, type "journalctl -xb" to view\\nsystem logs, "systemctl reboot" to reboot, "systemctl default" or ^D to\\nboot into default mode.'
 ExecStart=-/bin/sh -c "@SULOGIN@; @SYSTEMCTL@ --job-mode=fail --no-block default"
-- 
1.8.3.1