syscalls/swapon/swapoff: Move common library to libs/

There is a race/determinism issue with libswapon currently as depending on
which makefile path builds it, the debug paths may be "../swapon/libswapon.c"
or "libswapon.c". To avoid the determinism issue, move libswapon to libs/
and use it from the shared location.

The header is moved to the common includes directory to match and
the Makefile.inc fragment can be dropped.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Reviewed-by: Cyril Hrubis <chrubis@suse.cz>

2 files changed, 102 insertions, 0 deletions

diff --git a/libs/libltpswapon/Makefile b/libs/libltpswapon/Makefile
new file mode 100644
index 000000000..8f738338b
--- /dev/null
+++ b/libs/libltpswapon/Makefile
@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+#
+# Copyright (C) Richard Purdie <richard.purdie@linuxfoundation.org>
+
+top_srcdir		?= ../..
+
+include $(top_srcdir)/include/mk/env_pre.mk
+
+INTERNAL_LIB		:= libltpswapon.a
+
+include $(top_srcdir)/include/mk/lib.mk
+include $(top_srcdir)/include/mk/generic_leaf_target.mk
diff --git a/libs/libltpswapon/libswapon.c b/libs/libltpswapon/libswapon.c
new file mode 100644
index 000000000..a4f0bef28
--- /dev/null
+++ b/libs/libltpswapon/libswapon.c
@@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 2013 Oracle and/or its affiliates. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it would be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write the Free Software Foundation,
+ * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Author: Stanislav Kholmanskikh <stanislav.kholmanskikh@oracle.com>
+ *
+ */
+
+#include <errno.h>
+#include "lapi/syscalls.h"
+#include "test.h"
+#include "libswapon.h"
+
+/*
+ * Make a swap file
+ */
+int make_swapfile(void (cleanup)(void), const char *swapfile, int safe)
+{
+	if (!tst_fs_has_free(NULL, ".", sysconf(_SC_PAGESIZE) * 10,
+	    TST_BYTES)) {
+		tst_brkm(TBROK, cleanup,
+			"Insufficient disk space to create swap file");
+	}
+
+	/* create file */
+	if (tst_fill_file(swapfile, 0,
+			sysconf(_SC_PAGESIZE), 10) != 0) {
+		tst_brkm(TBROK, cleanup, "Failed to create swapfile");
+	}
+
+	/* make the file swapfile */
+	const char *argv[2 + 1];
+	argv[0] = "mkswap";
+	argv[1] = swapfile;
+	argv[2] = NULL;
+
+	return tst_cmd(cleanup, argv, "/dev/null", "/dev/null", safe);
+}
+
+/*
+ * Check swapon/swapoff support status of filesystems or files
+ * we are testing on.
+ */
+void is_swap_supported(void (cleanup)(void), const char *filename)
+{
+	int fibmap = tst_fibmap(filename);
+	long fs_type = tst_fs_type(cleanup, filename);
+	const char *fstype = tst_fs_type_name(fs_type);
+
+	int ret = make_swapfile(NULL, filename, 1);
+	if (ret != 0) {
+		if (fibmap == 1) {
+			tst_brkm(TCONF, cleanup,
+				"mkswap on %s not supported", fstype);
+		} else {
+			tst_brkm(TFAIL, cleanup,
+				"mkswap on %s failed", fstype);
+		}
+	}
+
+	TEST(ltp_syscall(__NR_swapon, filename, 0));
+	if (TEST_RETURN == -1) {
+		if (fibmap == 1 && errno == EINVAL) {
+			tst_brkm(TCONF, cleanup,
+				"Swapfile on %s not implemented", fstype);
+		} else {
+			tst_brkm(TFAIL | TERRNO, cleanup,
+				 "swapon on %s failed", fstype);
+		}
+	}
+
+	TEST(ltp_syscall(__NR_swapoff, filename, 0));
+	if (TEST_RETURN == -1) {
+		tst_brkm(TFAIL | TTERRNO, cleanup,
+			"swapoff on %s failed", fstype);
+	}
+}