[Buildroot] [git commit branch/next] util-linux: fix build for SPARC

[Thomas Petazzoni]

commit: https://git.buildroot.net/buildroot/commit/?id=eb8bfdaf6eb1c871ceddb2e52a6ded7ff94d597d
branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/next

Pull a patch already applied upstream that fixes the build of setarch
for SPARC processors.

Fixes:
  http://autobuild.buildroot.net/results/44d0538332499cea691a381048562a09cda23624
  http://autobuild.buildroot.net/results/e7e3469717ab27d66d2528087fd7c3a41477ae05

Signed-off-by: Carlos Santos <casantos at datacom.com.br>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni at bootlin.com>
---
 ...-setarch-fix-obscure-sparc32bash-use-case.patch | 84 ++++++++++++++++++++++
 1 file changed, 84 insertions(+)

diff --git a/package/util-linux/0003-setarch-fix-obscure-sparc32bash-use-case.patch b/package/util-linux/0003-setarch-fix-obscure-sparc32bash-use-case.patch
new file mode 100644
index 0000000000..70588b863e
--- /dev/null
+++ b/package/util-linux/0003-setarch-fix-obscure-sparc32bash-use-case.patch
@@ -0,0 +1,84 @@
+From 3fa06e049012218d883d0e1251df86bafbc446bf Mon Sep 17 00:00:00 2001
+From: Karel Zak <kzak at redhat.com>
+Date: Thu, 22 Nov 2018 11:03:35 +0100
+Subject: [PATCH] setarch: fix obscure sparc32bash use-case
+
+Reported-by: Carlos Santos <casantos at datacom.com.br>
+Signed-off-by: Karel Zak <kzak at redhat.com>
+Signed-off-by: Carlos Santos <casantos at datacom.com.br>
+---
+ sys-utils/setarch.c | 28 ++++++++++++++++++----------
+ 1 file changed, 18 insertions(+), 10 deletions(-)
+
+diff --git a/sys-utils/setarch.c b/sys-utils/setarch.c
+index a733f7b3c..7c0a63fbb 100644
+--- a/sys-utils/setarch.c
++++ b/sys-utils/setarch.c
+@@ -268,6 +268,7 @@ int main(int argc, char *argv[])
+ 	int c;
+ 	struct arch_domain *doms, *target;
+ 	unsigned long pers_value = 0;
++	char *shell = NULL, *shell_arg = NULL;
+ 
+ 	/* Options without equivalent short options */
+ 	enum {
+@@ -310,14 +311,14 @@ int main(int argc, char *argv[])
+ 	archwrapper = strcmp(program_invocation_short_name, "setarch") != 0;
+ 	if (archwrapper) {
+ 		arch = program_invocation_short_name;	/* symlinks to setarch */
+-#if defined(__sparc64__) || defined(__sparc__)
++
++		/* Don't use ifdef sparc here, we get "Unrecognized architecture"
++		 * error message later if necessary */
+ 		if (strcmp(arch, "sparc32bash") == 0) {
+-			if (set_arch(arch, 0L, 0))
+-				err(EXIT_FAILURE, _("Failed to set personality to %s"), arch);
+-			execl("/bin/bash", "", NULL);
+-			errexec("/bin/bash");
++			shell = "/bin/bash";
++			shell_arg = "";
++			goto set_arch;
+ 		}
+-#endif
+ 	} else {
+ 		if (1 < argc && *argv[1] != '-') {
+ 			arch = argv[1];
+@@ -391,6 +392,7 @@ int main(int argc, char *argv[])
+ 	argc -= optind;
+ 	argv += optind;
+ 
++set_arch:
+ 	/* get execution domain (architecture) */
+ 	if (arch) {
+ 		doms = init_arch_domains();
+@@ -422,17 +424,23 @@ int main(int argc, char *argv[])
+ 	if (arch)
+ 		verify_arch_domain(target, arch);
+ 
++	if (!argc) {
++		shell = "/bin/sh";
++		shell_arg = "-sh";
++	}
+ 	if (verbose) {
+-		printf(_("Execute command `%s'.\n"), argc ? argv[0] : "/bin/sh");
++		printf(_("Execute command `%s'.\n"), shell ? shell : argv[0]);
+ 		/* flush all output streams before exec */
+ 		fflush(NULL);
+ 	}
+ 
+-	if (!argc) {
+-		execl("/bin/sh", "-sh", NULL);
+-		errexec("/bin/sh");
++	/* Execute shell */
++	if (shell) {
++		execl(shell, shell_arg, NULL);
++		errexec(shell);
+ 	}
+ 
++	/* Execute on command line specified command */
+ 	execvp(argv[0], argv);
+ 	errexec(argv[0]);
+ }
+-- 
+2.14.5
+