[LTP] [PATCH v2 5/6] syscalls/quotactl04: add project quota test for non-xfs filesystem

[Yang Xu <xuyang2018.jy@cn.fujitsu.com>]

This is a variant about quotactl01. It is used to test project quota.
I split it into a new case instead of adding it in quotaclt01 because
two points:
1)before linux 4.10, ext4 doesn't support project quota
2)on old kernel, kernel doesn't permit mount both prjquota and grpquota together

Signed-off-by: Yang Xu <xuyang2018.jy@cn.fujitsu.com>
Suggested-by: Jan Kara <jack@suse.cz>
---
 include/lapi/quotactl.h                       |   4 +
 runtest/syscalls                              |   1 +
 testcases/kernel/syscalls/quotactl/.gitignore |   1 +
 .../kernel/syscalls/quotactl/quotactl04.c     | 159 ++++++++++++++++++
 4 files changed, 165 insertions(+)
 create mode 100644 testcases/kernel/syscalls/quotactl/quotactl04.c

diff --git a/include/lapi/quotactl.h b/include/lapi/quotactl.h
index f1e404256..309806fc0 100644
--- a/include/lapi/quotactl.h
+++ b/include/lapi/quotactl.h
@@ -10,6 +10,10 @@
 
 #include <linux/quota.h>
 
+# ifndef PRJQUOTA
+#  define PRJQUOTA 2
+# endif
+
 # ifndef Q_XQUOTARM
 #  define Q_XQUOTARM XQM_CMD(6)
 # endif
diff --git a/runtest/syscalls b/runtest/syscalls
index 12d3e0d3b..c30e9e620 100644
--- a/runtest/syscalls
+++ b/runtest/syscalls
@@ -953,6 +953,7 @@ pwritev202_64 pwritev202_64
 quotactl01 quotactl01
 quotactl02 quotactl02
 quotactl03 quotactl03
+quotactl04 quotactl04
 
 read01 read01
 read02 read02
diff --git a/testcases/kernel/syscalls/quotactl/.gitignore b/testcases/kernel/syscalls/quotactl/.gitignore
index b0ef075e7..1db7c5d98 100644
--- a/testcases/kernel/syscalls/quotactl/.gitignore
+++ b/testcases/kernel/syscalls/quotactl/.gitignore
@@ -1,3 +1,4 @@
 /quotactl01
 /quotactl02
 /quotactl03
+/quotactl04
diff --git a/testcases/kernel/syscalls/quotactl/quotactl04.c b/testcases/kernel/syscalls/quotactl/quotactl04.c
new file mode 100644
index 000000000..c169b8b13
--- /dev/null
+++ b/testcases/kernel/syscalls/quotactl/quotactl04.c
@@ -0,0 +1,159 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2019 FUJITSU LIMITED. All rights reserved.
+ * Author: Yang Xu <xuyang2018.jy@cn.fujitsu.com>
+ *
+ * This testcase checks the basic flag of quotactl(2) for project quota on
+ * non-XFS filesystems.
+ *
+ * 1) quotactl(2) succeeds to turn on quota with Q_QUOTAON flag for project.
+ * 2) quotactl(2) succeeds to set disk quota limits with Q_SETQUOTA flag
+ *    for project.
+ * 3) quotactl(2) succeeds to get disk quota limits with Q_GETQUOTA flag
+ *    for project.
+ * 4) quotactl(2) succeeds to set information about quotafile with Q_SETINFO
+ *    flag for project.
+ * 5) quotactl(2) succeeds to get information about quotafile with Q_GETINFO
+ *    flag for project.
+ * 6) quotactl(2) succeeds to get quota format with Q_GETFMT flag for project.
+ * 7) quotactl(2) succeeds to update quota usages with Q_SYNC flag for project.
+ * 8) quotactl(2) succeeds to get disk quota limit greater than or equal to
+ *    ID with Q_GETNEXTQUOTA flag for project.
+ * 9) quotactl(2) succeeds to turn off quota with Q_QUOTAOFF flag for project.
+ */
+
+#include <errno.h>
+#include <string.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/stat.h>
+#include "config.h"
+#include <sys/quota.h>
+#include "lapi/quotactl.h"
+#include "tst_test.h"
+
+#define FMTID QFMT_VFS_V1
+#define MNTPOINT	"mntpoint"
+static int32_t fmt_id = FMTID;
+static int test_id, mount_flag;
+static struct dqblk set_dq = {
+	.dqb_bsoftlimit = 100,
+	.dqb_valid = QIF_BLIMITS
+};
+static struct dqblk res_dq;
+static struct dqinfo set_qf = {
+	.dqi_bgrace = 80,
+	.dqi_valid = IIF_BGRACE
+};
+
+static struct dqinfo res_qf;
+static int32_t fmt_buf;
+
+#if defined(HAVE_STRUCT_IF_NEXTDQBLK)
+static struct if_nextdqblk res_ndq;
+#endif
+
+static struct tcase {
+	int cmd;
+	int *id;
+	void *addr;
+	void *set_data;
+	void *res_data;
+	int sz;
+	char *des;
+} tcases[] = {
+	{QCMD(Q_QUOTAON, PRJQUOTA), &fmt_id, NULL,
+	NULL, NULL, 0, "turn on quota for project"},
+
+	{QCMD(Q_SETQUOTA, PRJQUOTA), &test_id, &set_dq,
+	NULL, NULL, 0, "set disk quota limit for project"},
+
+	{QCMD(Q_GETQUOTA, PRJQUOTA), &test_id, &res_dq,
+	&set_dq.dqb_bsoftlimit, &res_dq.dqb_bsoftlimit,
+	sizeof(res_dq.dqb_bsoftlimit), "get disk quota limit for project"},
+
+	{QCMD(Q_SETINFO, PRJQUOTA), &test_id, &set_qf,
+	NULL, NULL, 0, "set information about quotafile for project"},
+
+	{QCMD(Q_GETINFO, PRJQUOTA), &test_id, &res_qf,
+	&set_qf.dqi_bgrace, &res_qf.dqi_bgrace, sizeof(res_qf.dqi_bgrace),
+	"get information about quotafile for project"},
+
+	{QCMD(Q_GETFMT, PRJQUOTA), &test_id, &fmt_buf,
+	&fmt_id, &fmt_buf, sizeof(fmt_buf),
+	"get quota format for project"},
+
+	{QCMD(Q_SYNC, PRJQUOTA), &test_id, &res_dq,
+	NULL, NULL, 0, "update quota usages for project"},
+
+#if defined(HAVE_STRUCT_IF_NEXTDQBLK)
+	{QCMD(Q_GETNEXTQUOTA, PRJQUOTA), &test_id, &res_ndq,
+	&test_id, &res_ndq.dqb_id, sizeof(res_ndq.dqb_id),
+	"get next disk quota limit for project"},
+#endif
+
+	{QCMD(Q_QUOTAOFF, PRJQUOTA), &test_id, NULL,
+	NULL, NULL, 0, "turn off quota for project"},
+
+};
+
+static void setup(void)
+{
+	const char *const extra_opts[] = {"-O quota,project", NULL};
+
+	test_id = geteuid();
+	SAFE_MKFS(tst_device->dev, tst_device->fs_type, NULL, extra_opts);
+	SAFE_MOUNT(tst_device->dev, MNTPOINT, tst_device->fs_type, 0, "quota");
+	mount_flag = 1;
+}
+
+
+static void cleanup(void)
+{
+	 if (mount_flag && tst_umount(MNTPOINT))
+		tst_res(TWARN | TERRNO, "umount(%s)", MNTPOINT);
+}
+
+static void verify_quota(unsigned int n)
+{
+	struct tcase *tc = &tcases[n];
+
+	res_dq.dqb_bsoftlimit = 0;
+	res_qf.dqi_igrace = 0;
+	fmt_buf = 0;
+
+	TEST(quotactl(tc->cmd, tst_device->dev, *tc->id, tc->addr));
+	if (TST_RET == -1) {
+		tst_res(TFAIL | TTERRNO, "quotactl failed to %s", tc->des);
+		return;
+	}
+
+	if (memcmp(tc->res_data, tc->set_data, tc->sz)) {
+		tst_res(TFAIL, "quotactl failed to %s", tc->des);
+		tst_res_hexd(TINFO, tc->res_data, tc->sz, "retval:   ");
+		tst_res_hexd(TINFO, tc->set_data, tc->sz, "expected: ");
+		return;
+	}
+
+	tst_res(TPASS, "quotactl succeeded to %s", tc->des);
+}
+
+static const char *kconfigs[] = {
+	"CONFIG_QFMT_V2",
+	NULL
+};
+
+static struct tst_test test = {
+	.needs_tmpdir = 1,
+	.needs_root = 1,
+	.needs_kconfigs = kconfigs,
+	.min_kver = "4.10", /* commit 689c958cbe6b (ext4: add project quota support) */
+	.test = verify_quota,
+	.tcnt = ARRAY_SIZE(tcases),
+	.setup = setup,
+	.cleanup = cleanup,
+	.needs_device = 1,
+	.dev_fs_type = "ext4",
+	.mntpoint = MNTPOINT,
+};
+
-- 
2.18.0