tests: add mkdir.test

* tests/mkdir.c: New file.
* tests/mkdir.test: New test.
* tests/.gitignore: Add mkdir.
* tests/Makefile.am (check_PROGRAMS): Likewise.
(DECODER_TESTS): Add mkdir.test.

tests/.gitignore

@@ -99,6 +99,7 @@ lstat64
 membarrier
 memfd_create
 mincore
+mkdir
 mkdirat
 mknod
 mlock2

tests/Makefile.am

@@ -150,6 +150,7 @@ check_PROGRAMS = \
 	membarrier \
 	memfd_create \
 	mincore \
+	mkdir \
 	mkdirat \
 	mknod \
 	mlock2 \
@@ -395,6 +396,7 @@ DECODER_TESTS = \
 	membarrier.test \
 	memfd_create.test \
 	mincore.test \
+	mkdir.test \
 	mkdirat.test \
 	mknod.test \
 	mlock2.test \

tests/mkdir.c

@@ -0,0 +1,27 @@
+#include "tests.h"
+#include <sys/syscall.h>
+
+#ifdef __NR_mkdir
+
+# include <errno.h>
+# include <stdio.h>
+# include <unistd.h>
+
+int
+main(void)
+{
+	static const char sample[] = "mkdir";
+
+	long rc = syscall(__NR_mkdir, sample, 0600);
+	printf("mkdir(\"%s\", 0600) = %ld %s (%m)\n",
+	       sample, rc, errno == ENOSYS ? "ENOSYS" : "EEXIST");
+
+	puts("+++ exited with 0 +++");
+	return 0;
+}
+
+#else
+
+SKIP_MAIN_UNDEFINED("__NR_mkdir")
+
+#endif

tests/mkdir.test

@@ -0,0 +1,6 @@
+#!/bin/sh
+
+# Check mkdir syscall decoding.
+
+. "${srcdir=.}/init.sh"
+run_strace_match_diff -a21