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From 9435bd3d692c7b07e527b6a616018fa5620502e2 Mon Sep 17 00:00:00 2001
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From: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
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Date: Thu, 24 Sep 2015 12:47:22 +0200
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Subject: [PATCH] s390: add personality support
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Introduce personality support for Linux on z Systems to run
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particular services with a 64-bit or 31-bit personality.
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Cherry-picked from: 7517f51ef9921d3360453c8eec2c97256d320ceb
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Resolves: #1300344
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---
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 Makefile.am                        |  1 +
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 src/shared/util.c                  | 27 +++++++++++++++++++++++++++
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 src/test/test-execute.c            |  8 ++++++--
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 test/exec-personality-s390.service |  7 +++++++
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 4 files changed, 41 insertions(+), 2 deletions(-)
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 create mode 100644 test/exec-personality-s390.service
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diff --git a/Makefile.am b/Makefile.am
Pablo Greco 48fc63
index 255937643e..3af720bdae 100644
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--- a/Makefile.am
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+++ b/Makefile.am
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@@ -1483,6 +1483,7 @@ EXTRA_DIST += \
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 	test/exec-ignoresigpipe-yes.service \
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 	test/exec-personality-x86-64.service \
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 	test/exec-personality-x86.service \
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+	test/exec-personality-s390.service \
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 	test/exec-privatedevices-no.service \
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 	test/exec-privatedevices-yes.service \
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 	test/exec-privatetmp-no.service \
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diff --git a/src/shared/util.c b/src/shared/util.c
Pablo Greco 48fc63
index dc51852699..a24aa7f93a 100644
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--- a/src/shared/util.c
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+++ b/src/shared/util.c
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@@ -6748,6 +6748,19 @@ unsigned long personality_from_string(const char *p) {
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         if (streq(p, "x86"))
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                 return PER_LINUX;
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+
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+#elif defined(__s390x__)
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+
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+        if (streq(p, "s390"))
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+                return PER_LINUX32;
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+
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+        if (streq(p, "s390x"))
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+                return PER_LINUX;
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+
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+#elif defined(__s390__)
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+
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+        if (streq(p, "s390"))
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+                return PER_LINUX;
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 #endif
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         /* personality(7) documents that 0xffffffffUL is used for
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@@ -6770,6 +6783,20 @@ const char* personality_to_string(unsigned long p) {
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         if (p == PER_LINUX)
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                 return "x86";
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+
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+#elif defined(__s390x__)
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+
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+        if (p == PER_LINUX)
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+                return "s390x";
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+
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+        if (p == PER_LINUX32)
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+                return "s390";
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+
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+#elif defined(__s390__)
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+
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+        if (p == PER_LINUX)
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+                return "s390";
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+
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 #endif
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         return NULL;
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diff --git a/src/test/test-execute.c b/src/test/test-execute.c
Pablo Greco 48fc63
index 91ccaf72b8..00f3607b49 100644
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--- a/src/test/test-execute.c
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+++ b/src/test/test-execute.c
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@@ -77,10 +77,14 @@ static void test_exec_workingdirectory(Manager *m) {
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 }
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 static void test_exec_personality(Manager *m) {
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-        test(m, "exec-personality-x86.service", 0, CLD_EXITED);
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-
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 #if defined(__x86_64__)
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         test(m, "exec-personality-x86-64.service", 0, CLD_EXITED);
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+
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+#elif defined(__s390__)
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+        test(m, "exec-personality-s390.service", 0, CLD_EXITED);
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+
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+#else
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+        test(m, "exec-personality-x86.service", 0, CLD_EXITED);
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 #endif
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 }
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diff --git a/test/exec-personality-s390.service b/test/exec-personality-s390.service
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new file mode 100644
Pablo Greco 48fc63
index 0000000000..f3c3b03e3d
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--- /dev/null
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+++ b/test/exec-personality-s390.service
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@@ -0,0 +1,7 @@
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+[Unit]
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+Description=Test for Personality=s390
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+
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+[Service]
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+ExecStart=/bin/sh -c 'echo $(uname -m); exit $(test $(uname -m) = "s390")'
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+Type=oneshot
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+Personality=s390