An empty buffer of size zero can be passed into getxattr(2) to return
the current size of the named extended attribute.
Signed-off-by: Eryu Guan <[email protected]>
---
runtest/syscalls | 1 +
testcases/kernel/syscalls/getxattr/getxattr03.c | 122 +++++++++++++++++++++++
2 files changed, 123 insertions(+), 0 deletions(-)
create mode 100644 testcases/kernel/syscalls/getxattr/getxattr03.c
diff --git a/runtest/syscalls b/runtest/syscalls
index 4aac38c..d786746 100644
--- a/runtest/syscalls
+++ b/runtest/syscalls
@@ -423,6 +423,7 @@ getuid03_16 getuid03_16
getxattr01 getxattr01
getxattr02 getxattr02
+getxattr03 getxattr03
#Needs tty device.
#ioctl01 ioctl01 -D /dev/tty0
diff --git a/testcases/kernel/syscalls/getxattr/getxattr03.c b/testcases/kernel/syscalls/getxattr/getxattr03.c
new file mode 100644
index 0000000..e282e78
--- /dev/null
+++ b/testcases/kernel/syscalls/getxattr/getxattr03.c
@@ -0,0 +1,122 @@
+/*
+ * Copyright (C) 2011 Red Hat, Inc.
+ *
+ * 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.
+ *
+ * Further, this software is distributed without any warranty that it
+ * is free of the rightful claim of any third person regarding
+ * infringement or the like. Any license provided herein, whether
+ * implied or otherwise, applies only to this software file. Patent
+ * licenses, if any, provided herein do not apply to combinations of
+ * this program with other software, or any other product whatsoever.
+ *
+ * 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.
+ */
+
+/*
+ * An empty buffer of size zero can be passed into getxattr(2) to return
+ * the current size of the named extended attribute.
+ */
+
+#include "config.h"
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/wait.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#ifdef HAVE_ATTR_XATTR_H
+#include <attr/xattr.h>
+#endif
+#include "test.h"
+#include "usctest.h"
+
+char *TCID = "getxattr03";
+
+#ifdef HAVE_ATTR_XATTR_H
+#define XATTR_TEST_KEY "user.testkey"
+#define XATTR_TEST_VALUE "test value"
+#define TESTFILE "getxattr03testfile"
+
+static void setup(void);
+static void cleanup(void);
+
+int TST_TOTAL = 1;
+
+int main(int argc, char *argv[])
+{
+ int lc;
+ char *msg;
+
+ msg = parse_opts(argc, argv, NULL, NULL);
+ if (msg != NULL)
+ tst_brkm(TBROK, tst_exit, "OPTION PARSING ERROR - %s", msg);
+
+ setup();
+
+ for (lc = 0; TEST_LOOPING(lc); lc++) {
+ Tst_count = 0;
+
+ TEST(getxattr(TESTFILE, XATTR_TEST_KEY, NULL, 0));
+
+ if (TEST_RETURN == strlen(XATTR_TEST_VALUE))
+ tst_resm(TPASS, "getxattr(2) returned correct value");
+ else
+ tst_resm(TFAIL | TTERRNO, "getxattr(2) failed");
+ }
+
+ cleanup();
+ tst_exit();
+}
+
+static void setup(void)
+{
+ int fd;
+
+ tst_require_root(NULL);
+
+ tst_tmpdir();
+
+ /* Test for xattr support and set attr value */
+ fd = creat(TESTFILE, 0644);
+ if (fd == -1)
+ tst_brkm(TBROK | TERRNO, cleanup, "Create %s failed", TESTFILE);
+ close(fd);
+
+ if (setxattr(TESTFILE, XATTR_TEST_KEY, XATTR_TEST_VALUE,
+ strlen(XATTR_TEST_VALUE), XATTR_CREATE) == -1) {
+ if (errno == ENOTSUP)
+ tst_brkm(TCONF, cleanup, "No xattr support in fs or "
+ "mount without user_xattr option");
+ else
+ tst_brkm(TBROK | TERRNO, cleanup, "setxattr %s failed",
+ TESTFILE);
+ }
+
+ TEST_PAUSE;
+}
+
+static void cleanup(void)
+{
+ TEST_CLEANUP;
+ tst_rmdir();
+}
+#else /* HAVE_ATTR_XATTR_H */
+int main(int argc, char *argv[])
+{
+ tst_brkm(TCONF, NULL, "<attr/xattr.h> does not exist.");
+}
+#endif
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