The existing lib/tst_cwd_has_free.c only determines the filesystem, which
the current directory is in. And I think tst_cwd_has_free() is not entirely
correct. See this code in tst_cwd_has_free():
return ((float)sf.f_bfree) / (1024 / sf.f_bsize) >=
required_kib ? 1 : 0;
if sf.f_bsize is greater than 1024, this code is wrong.
I choose to remove tst_cwd_has_free.c and add lib/tst_fs_has_free.c.
The prototype is below:
int tst_fs_has_free(void (*cleanup)(void), const char *path,
unsigned int size, unsigned int mult);
User can specify the path to determine the corresponding filesystem.
Signed-off-by: Xiaoguang Wang <[email protected]>
---
include/test.h | 17 +++++++++--
lib/tst_cwd_has_free.c | 22 --------------
lib/tst_fs_has_free.c | 42 +++++++++++++++++++++++++++
testcases/kernel/syscalls/swapoff/swapoff01.c | 2 +-
testcases/kernel/syscalls/swapoff/swapoff02.c | 2 +-
testcases/kernel/syscalls/swapon/libswapon.c | 3 +-
6 files changed, 61 insertions(+), 27 deletions(-)
delete mode 100644 lib/tst_cwd_has_free.c
create mode 100644 lib/tst_fs_has_free.c
diff --git a/include/test.h b/include/test.h
index f5c602b..558575c 100644
--- a/include/test.h
+++ b/include/test.h
@@ -39,6 +39,7 @@
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
+#include <stdint.h>
#include "compiler.h"
@@ -204,8 +205,20 @@ struct tst_kern_exv {
int tst_kvercmp2(int r1, int r2, int r3, struct tst_kern_exv *vers);
-/* lib/tst_cwd_has_free.c */
-int tst_cwd_has_free(int required_kib);
+enum {
+ TST_KB = 1024,
+ TST_MB = 1048576,
+ TST_GB = 1073741824,
+};
+
+/* lib/tst_fs_has_free.c
+ *
+ * @path: path is the pathname of any file within the mounted file system
+ * @mult: mult should be TST_KB, TST_MB or TST_GB
+ * the required free space is calculated by @size * @mult
+ */
+int tst_fs_has_free(void (*cleanup)(void), const char *path,
+ unsigned int size, unsigned int mult);
int tst_is_virt(int virt_type);
diff --git a/lib/tst_cwd_has_free.c b/lib/tst_cwd_has_free.c
deleted file mode 100644
index e44c31f..0000000
--- a/lib/tst_cwd_has_free.c
+++ /dev/null
@@ -1,22 +0,0 @@
-/*
- * AUTHOR
- * Ricky Ng-Adam <[email protected]>, 2005-01-01
- *
- * DESCRIPTION
- * Check if there is enough blocks to fill number of KiB specified
- * If current directory has enough blocks, return 1
- * If current directory has NOT enough blocks, return 0
- *
- *
- */
-#include <sys/vfs.h>
-
-int tst_cwd_has_free(int required_kib)
-{
- struct statfs sf;
- statfs(".", &sf);
-
- /* check that we have enough blocks to create swap file */
- return ((float)sf.f_bfree) / (1024 / sf.f_bsize) >=
- required_kib ? 1 : 0;
-}
diff --git a/lib/tst_fs_has_free.c b/lib/tst_fs_has_free.c
new file mode 100644
index 0000000..9a84e45
--- /dev/null
+++ b/lib/tst_fs_has_free.c
@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 2014 Fujitsu Ltd.
+ * Author: Xiaoguang Wang <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * 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.
+ *
+ * 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 Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+/*
+ * DESCRIPTION
+ * Check if the mounted file system has enough free space,
+ * if it is, tst_fs_has_free() returns 1, otherwise 0.
+ */
+
+#include <stdint.h>
+#include <sys/vfs.h>
+#include "test.h"
+
+int tst_fs_has_free(void (*cleanup)(void), const char *path,
+ unsigned int size, unsigned int mult)
+{
+ struct statfs sf;
+
+ if (statfs(path, &sf)) {
+ tst_brkm(TBROK | TERRNO, cleanup,
+ "tst_fs_has_free: failed to statfs(%s)", path);
+ }
+
+ if ((uint64_t)sf.f_bfree * sf.f_bsize > (uint64_t)size * mult)
+ return 1;
+ else
+ return 0;
+}
diff --git a/testcases/kernel/syscalls/swapoff/swapoff01.c
b/testcases/kernel/syscalls/swapoff/swapoff01.c
index b4d19de..96b52ae 100644
--- a/testcases/kernel/syscalls/swapoff/swapoff01.c
+++ b/testcases/kernel/syscalls/swapoff/swapoff01.c
@@ -99,7 +99,7 @@ static void setup(void)
break;
}
- if (!tst_cwd_has_free(65536)) {
+ if (!tst_fs_has_free(NULL, ".", 64, TST_KB)) {
tst_brkm(TBROK, cleanup,
"Insufficient disk space to create swap file");
}
diff --git a/testcases/kernel/syscalls/swapoff/swapoff02.c
b/testcases/kernel/syscalls/swapoff/swapoff02.c
index 978dc01..f5929cc 100644
--- a/testcases/kernel/syscalls/swapoff/swapoff02.c
+++ b/testcases/kernel/syscalls/swapoff/swapoff02.c
@@ -157,7 +157,7 @@ static void setup(void)
break;
}
- if (!tst_cwd_has_free(1)) {
+ if (!tst_fs_has_free(NULL, ".", 1, TST_KB)) {
tst_brkm(TBROK, cleanup,
"Insufficient disk space to create swap file");
}
diff --git a/testcases/kernel/syscalls/swapon/libswapon.c
b/testcases/kernel/syscalls/swapon/libswapon.c
index 8eca7dc..4c5f045 100644
--- a/testcases/kernel/syscalls/swapon/libswapon.c
+++ b/testcases/kernel/syscalls/swapon/libswapon.c
@@ -27,7 +27,8 @@
*/
void make_swapfile(void (cleanup)(void), const char *swapfile)
{
- if (!tst_cwd_has_free(sysconf(_SC_PAGESIZE)*10)) {
+ if (!tst_fs_has_free(NULL, ".", sysconf(_SC_PAGESIZE) * 10 / TST_KB,
+ TST_KB)) {
tst_brkm(TBROK, cleanup,
"Insufficient disk space to create swap file");
}
--
1.8.2.1
------------------------------------------------------------------------------
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