[PATCH v7 1/4] lib/tst_ioctl.c: add helper tst_fibmap

[PATCH v7 1/4] lib/tst_ioctl.c: add helper tst_fibmap

[Murphy Zhou]

To check if FIBMAP ioctl is supported by the filesystem we are
testing on. It also can check the support status of specific
files, but that may not needed for now.

Reviewed-by: Li Wang <liwang@redhat.com>
Signed-off-by: Murphy Zhou <xzhou@redhat.com>
---
v7:
  Make tst_fibmap return value more accurate
  Print errno if fibmap ioctl does not succeed
  Make swapoff02 use new helper
  Mute some build warnnings
  cc linux-fsdevel list
  Overall diff stat:

 include/tst_fs.h                               |  5 +++++
 lib/tst_ioctl.c                                | 37 +++++++++++++++++++++++++++++++++++++
 testcases/kernel/syscalls/swapoff/Makefile     |  3 ++-
 testcases/kernel/syscalls/swapoff/Makefile.inc |  6 ++++++
 testcases/kernel/syscalls/swapoff/swapoff01.c  | 10 ++--------
 testcases/kernel/syscalls/swapoff/swapoff02.c  | 11 ++---------
 testcases/kernel/syscalls/swapon/libswapon.c   | 45 +++++++++++++++++++++++++++++++++++++++++++--
 testcases/kernel/syscalls/swapon/libswapon.h   |  7 ++++++-
 testcases/kernel/syscalls/swapon/swapon01.c    | 11 ++---------
 testcases/kernel/syscalls/swapon/swapon02.c    | 13 +++----------
 testcases/kernel/syscalls/swapon/swapon03.c    | 15 ++++-----------
 11 files changed, 112 insertions(+), 51 deletions(-)

v6:
  Modify make_swapfile() to check mkswap support status safely
  Remove whitelist
  Remove BTRFS EINVAL check
  Check mkswap status before testing swapon in helper
  If swapon pass, following swapoff failure will fail the whole test and break
  Also modify swapoff02 to remove whitelist completely
v5:
  Split to 4 patches
  Only take one filename parameter in tst_fibmap
  Add helper is_swap_supported to check swap operation support status
  Test fibmap/swapon and swapoff operation in the helper
  Keep NFS/TMPFS whitelist
  Keep BTRFS EINVAL handling logic, except above 2 situation:
    if swapon fails and fibmap is not supported, tst_brk with TCONF
    if swapon fails and fibmap is supported, tst_brk with TFAIL
  If swapon test pass in the helper, test swapoff similarly
  Put is_swap_supported helper in libswapon, link swapoff binaries to it
  Mute a sprintf filaname wanrning by the way
v4:
  Fail softly if FIBMAP nit supported, instead of skip entire testcase
v3:
  Fix fs_type undeclared in swapoff01.c
v2:
  Test FIBMAP instead of fstype whitelist

 include/tst_fs.h |  5 +++++
 lib/tst_ioctl.c  | 37 +++++++++++++++++++++++++++++++++++++
 2 files changed, 42 insertions(+)
 create mode 100644 lib/tst_ioctl.c

diff --git a/include/tst_fs.h b/include/tst_fs.h
index ebca065c6..6d03371ec 100644
--- a/include/tst_fs.h
+++ b/include/tst_fs.h
@@ -178,6 +178,11 @@ const char **tst_get_supported_fs_types(void);
  */
 void tst_fill_fs(const char *path, int verbose);
 
+/*
+ * test if FIBMAP ioctl is supported
+ */
+int tst_fibmap(const char *filename);
+
 #ifdef TST_TEST_H__
 static inline long tst_fs_type(const char *path)
 {
diff --git a/lib/tst_ioctl.c b/lib/tst_ioctl.c
new file mode 100644
index 000000000..364220bcd
--- /dev/null
+++ b/lib/tst_ioctl.c
@@ -0,0 +1,37 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/ioctl.h>
+#include <linux/fs.h>
+
+#define TST_NO_DEFAULT_MAIN
+
+#include "tst_test.h"
+
+int tst_fibmap(const char *filename)
+{
+	/* test if FIBMAP ioctl is supported */
+	int fd, block = 0;
+
+	fd = open(filename, O_RDWR | O_CREAT, 0666);
+	if (fd < 0) {
+		tst_res(TWARN | TERRNO,
+			 "open(%s, O_RDWR | O_CREAT, 0666) failed", filename);
+		return -1;
+	}
+
+	if (ioctl(fd, FIBMAP, &block)) {
+		tst_res(TINFO | TERRNO, "FIBMAP ioctl is NOT supported");
+		close(fd);
+		return 1;
+	}
+	tst_res(TINFO, "FIBMAP ioctl is supported");
+
+	if (close(fd)) {
+		tst_res(TWARN | TERRNO, "close(fd) failed");
+		return -1;
+	}
+	return 0;
+}
-- 
2.21.0

[PATCH v7 2/4] swapon/libswapon: add helper is_swap_supported

[Murphy Zhou]

To check if the filesystem we are testing on supports FIBMAP, mkswap,
swapon and swapoff operations. Survivor of this function should support
swapfile function well, like swapon and swapoff.
Modify make_swapfile function to test mkswap support status safely.

Reviewed-by: Li Wang <liwang@redhat.com>
Signed-off-by: Murphy Zhou <xzhou@redhat.com>
---
 testcases/kernel/syscalls/swapon/libswapon.c | 45 +++++++++++++++++++-
 testcases/kernel/syscalls/swapon/libswapon.h |  7 ++-
 2 files changed, 49 insertions(+), 3 deletions(-)

diff --git a/testcases/kernel/syscalls/swapon/libswapon.c b/testcases/kernel/syscalls/swapon/libswapon.c
index cf6a98891..0a4501bdd 100644
--- a/testcases/kernel/syscalls/swapon/libswapon.c
+++ b/testcases/kernel/syscalls/swapon/libswapon.c
@@ -19,13 +19,15 @@
  *
  */
 
+#include <errno.h>
+#include "lapi/syscalls.h"
 #include "test.h"
 #include "libswapon.h"
 
 /*
  * Make a swap file
  */
-void make_swapfile(void (cleanup)(void), const char *swapfile)
+int make_swapfile(void (cleanup)(void), const char *swapfile, int safe)
 {
 	if (!tst_fs_has_free(NULL, ".", sysconf(_SC_PAGESIZE) * 10,
 	    TST_BYTES)) {
@@ -45,5 +47,44 @@ void make_swapfile(void (cleanup)(void), const char *swapfile)
 	argv[1] = swapfile;
 	argv[2] = NULL;
 
-	tst_run_cmd(cleanup, argv, "/dev/null", "/dev/null", 0);
+	return tst_run_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 | TERRNO, cleanup,
+			"swapoff on %s failed", fstype);
+	}
 }
diff --git a/testcases/kernel/syscalls/swapon/libswapon.h b/testcases/kernel/syscalls/swapon/libswapon.h
index 7f7211eb4..a51833ec1 100644
--- a/testcases/kernel/syscalls/swapon/libswapon.h
+++ b/testcases/kernel/syscalls/swapon/libswapon.h
@@ -29,6 +29,11 @@
 /*
  * Make a swap file
  */
-void make_swapfile(void (cleanup)(void), const char *swapfile);
+int make_swapfile(void (cleanup)(void), const char *swapfile, int safe);
 
+/*
+ * Check swapon/swapoff support status of filesystems or files
+ * we are testing on.
+ */
+void is_swap_supported(void (cleanup)(void), const char *filename);
 #endif /* __LIBSWAPON_H__ */
-- 
2.21.0

[PATCH v7 3/4] syscalls/swapon/swapon0{1..3}: use helpers to check support status

[Murphy Zhou]

Of swap operations.

Reviewed-by: Li Wang <liwang@redhat.com>
Signed-off-by: Murphy Zhou <xzhou@redhat.com>
---
 testcases/kernel/syscalls/swapon/swapon01.c | 11 ++---------
 testcases/kernel/syscalls/swapon/swapon02.c | 13 +++----------
 testcases/kernel/syscalls/swapon/swapon03.c | 15 ++++-----------
 3 files changed, 9 insertions(+), 30 deletions(-)

diff --git a/testcases/kernel/syscalls/swapon/swapon01.c b/testcases/kernel/syscalls/swapon/swapon01.c
index 32538f82b..f95ce0ab2 100644
--- a/testcases/kernel/syscalls/swapon/swapon01.c
+++ b/testcases/kernel/syscalls/swapon/swapon01.c
@@ -84,16 +84,9 @@ static void setup(void)
 
 	tst_tmpdir();
 
-	switch ((fs_type = tst_fs_type(cleanup, "."))) {
-	case TST_NFS_MAGIC:
-	case TST_TMPFS_MAGIC:
-		tst_brkm(TCONF, cleanup,
-			 "Cannot do swapon on a file on %s filesystem",
-			 tst_fs_type_name(fs_type));
-	break;
-	}
+	is_swap_supported(cleanup, "./tstswap");
 
-	make_swapfile(cleanup, "swapfile01");
+	make_swapfile(cleanup, "swapfile01", 0);
 }
 
 static void cleanup(void)
diff --git a/testcases/kernel/syscalls/swapon/swapon02.c b/testcases/kernel/syscalls/swapon/swapon02.c
index 4af5105c6..3d49d0c6b 100644
--- a/testcases/kernel/syscalls/swapon/swapon02.c
+++ b/testcases/kernel/syscalls/swapon/swapon02.c
@@ -132,18 +132,11 @@ static void setup(void)
 
 	tst_tmpdir();
 
-	switch ((fs_type = tst_fs_type(cleanup, "."))) {
-	case TST_NFS_MAGIC:
-	case TST_TMPFS_MAGIC:
-		tst_brkm(TCONF, cleanup,
-			 "Cannot do swapon on a file on %s filesystem",
-			 tst_fs_type_name(fs_type));
-	break;
-	}
+	is_swap_supported(cleanup, "./tstswap");
 
 	SAFE_TOUCH(cleanup, "notswap", 0777, NULL);
-	make_swapfile(cleanup, "swapfile01");
-	make_swapfile(cleanup, "alreadyused");
+	make_swapfile(cleanup, "swapfile01", 0);
+	make_swapfile(cleanup, "alreadyused", 0);
 
 	if (ltp_syscall(__NR_swapon, "alreadyused", 0)) {
 		if (fs_type != TST_BTRFS_MAGIC || errno != EINVAL)
diff --git a/testcases/kernel/syscalls/swapon/swapon03.c b/testcases/kernel/syscalls/swapon/swapon03.c
index 955ac247b..cef57150c 100644
--- a/testcases/kernel/syscalls/swapon/swapon03.c
+++ b/testcases/kernel/syscalls/swapon/swapon03.c
@@ -153,7 +153,7 @@ static int setup_swap(void)
 	int j, fd;
 	int status;
 	int res = 0;
-	char filename[15];
+	char filename[FILENAME_MAX];
 	char buf[BUFSIZ + 1];
 
 	/* Find out how many swapfiles (1 line per entry) already exist */
@@ -210,7 +210,7 @@ static int setup_swap(void)
 			}
 
 			/* Create the swapfile */
-			make_swapfile(cleanup, filename);
+			make_swapfile(cleanup, filename, 0);
 
 			/* turn on the swap file */
 			res = ltp_syscall(__NR_swapon, filename, 0);
@@ -246,7 +246,7 @@ static int setup_swap(void)
 
 	/* Create all needed extra swapfiles for testing */
 	for (j = 0; j < testfiles; j++)
-		make_swapfile(cleanup, swap_testfiles[j].filename);
+		make_swapfile(cleanup, swap_testfiles[j].filename, 0);
 
 	return 0;
 
@@ -333,14 +333,7 @@ static void setup(void)
 
 	tst_tmpdir();
 
-	switch ((fs_type = tst_fs_type(cleanup, "."))) {
-	case TST_NFS_MAGIC:
-	case TST_TMPFS_MAGIC:
-		tst_brkm(TCONF, cleanup,
-			 "Cannot do swapon on a file on %s filesystem",
-			 tst_fs_type_name(fs_type));
-	break;
-	}
+	is_swap_supported(cleanup, "./tstswap");
 
 	TEST_PAUSE;
 }
-- 
2.21.0

[PATCH v7 4/4] syscalls/swapoff/swapoff0{1,2}: use helpers to check support status

[Murphy Zhou]

Of swap operations. Change Makefile to use functions from
../swapon/libswapon.c

Reviewed-by: Li Wang <liwang@redhat.com>
Signed-off-by: Murphy Zhou <xzhou@redhat.com>
---
 testcases/kernel/syscalls/swapoff/Makefile     |  3 ++-
 testcases/kernel/syscalls/swapoff/Makefile.inc |  6 ++++++
 testcases/kernel/syscalls/swapoff/swapoff01.c  | 10 ++--------
 testcases/kernel/syscalls/swapoff/swapoff02.c  | 11 ++---------
 4 files changed, 12 insertions(+), 18 deletions(-)
 create mode 100644 testcases/kernel/syscalls/swapoff/Makefile.inc

diff --git a/testcases/kernel/syscalls/swapoff/Makefile b/testcases/kernel/syscalls/swapoff/Makefile
index bd617d806..536b2dbac 100644
--- a/testcases/kernel/syscalls/swapoff/Makefile
+++ b/testcases/kernel/syscalls/swapoff/Makefile
@@ -19,5 +19,6 @@
 top_srcdir		?= ../../../..
 
 include $(top_srcdir)/include/mk/testcases.mk
-
+include $(abs_srcdir)/./Makefile.inc
 include $(top_srcdir)/include/mk/generic_leaf_target.mk
+$(MAKE_TARGETS): %: %.o ../swapon/libswapon.o
diff --git a/testcases/kernel/syscalls/swapoff/Makefile.inc b/testcases/kernel/syscalls/swapoff/Makefile.inc
new file mode 100644
index 000000000..65350cbeb
--- /dev/null
+++ b/testcases/kernel/syscalls/swapoff/Makefile.inc
@@ -0,0 +1,6 @@
+LIBDIR			+= ../swapon/
+LIBSWAPON		:= $(LIBDIR)/libswapon.o
+$(LIBSWAPON):
+	$(MAKE) -C $(LIBDIR)
+CPPFLAGS		+= -I$(abs_srcdir)/$(LIBDIR)
+LDFLAGS			+= -L$(abs_builddir)/$(LIBDIR)
diff --git a/testcases/kernel/syscalls/swapoff/swapoff01.c b/testcases/kernel/syscalls/swapoff/swapoff01.c
index a63e661a5..e115269c0 100644
--- a/testcases/kernel/syscalls/swapoff/swapoff01.c
+++ b/testcases/kernel/syscalls/swapoff/swapoff01.c
@@ -25,6 +25,7 @@
 #include <stdlib.h>
 #include "config.h"
 #include "lapi/syscalls.h"
+#include "../swapon/libswapon.h"
 
 static void setup(void);
 static void cleanup(void);
@@ -86,14 +87,7 @@ static void setup(void)
 
 	tst_tmpdir();
 
-	switch ((fs_type = tst_fs_type(cleanup, "."))) {
-	case TST_NFS_MAGIC:
-	case TST_TMPFS_MAGIC:
-		tst_brkm(TCONF, cleanup,
-			 "Cannot do swapoff on a file on %s filesystem",
-			 tst_fs_type_name(fs_type));
-	break;
-	}
+	is_swap_supported(cleanup, "./tstswap");
 
 	if (!tst_fs_has_free(NULL, ".", 64, TST_MB)) {
 		tst_brkm(TBROK, cleanup,
diff --git a/testcases/kernel/syscalls/swapoff/swapoff02.c b/testcases/kernel/syscalls/swapoff/swapoff02.c
index b5c6312a1..8954f975f 100644
--- a/testcases/kernel/syscalls/swapoff/swapoff02.c
+++ b/testcases/kernel/syscalls/swapoff/swapoff02.c
@@ -33,6 +33,7 @@
 #include "test.h"
 #include "lapi/syscalls.h"
 #include "safe_macros.h"
+#include "../swapon/libswapon.h"
 
 static void setup(void);
 static void cleanup(void);
@@ -124,7 +125,6 @@ static void cleanup01(void)
 
 static void setup(void)
 {
-	long type;
 	struct passwd *nobody;
 
 	tst_sig(FORK, DEF_HANDLER, cleanup);
@@ -138,14 +138,7 @@ static void setup(void)
 
 	tst_tmpdir();
 
-	switch ((type = tst_fs_type(cleanup, "."))) {
-	case TST_NFS_MAGIC:
-	case TST_TMPFS_MAGIC:
-		tst_brkm(TCONF, cleanup,
-			 "Cannot do swapoff on a file on %s filesystem",
-			 tst_fs_type_name(type));
-	break;
-	}
+	is_swap_supported(cleanup, "./tstswap");
 
 	if (!tst_fs_has_free(NULL, ".", 1, TST_KB)) {
 		tst_brkm(TBROK, cleanup,
-- 
2.21.0