@@ -299,6 +299,8 @@ fcntl35 fcntl35
fcntl35_64 fcntl35_64
fcntl36 fcntl36
fcntl36_64 fcntl36_64
+fcntl37 fcntl37
+fcntl37_64 fcntl37_64
fdatasync01 fdatasync01
fdatasync02 fdatasync02
@@ -70,3 +70,5 @@
/fcntl35_64
/fcntl36
/fcntl36_64
+/fcntl37
+/fcntl37_64
new file mode 100644
@@ -0,0 +1,100 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2020 FUJITSU LIMITED. All rights reserved.
+ * Author: Yang Xu <xuyang2018.jy@cn.jujitsu.com>
+ *
+ * Test basic error handling for fcntl(2) using F_SETPIPE_SZ, F_GETPIPE_SZ
+ * argument.
+ * 1)fcntl fails with EINVAL when cmd is F_SETPIPE_SZ and the arg is
+ * beyond UINT_MAX
+ * 2)fcntl fails with EBUSY when cmd is F_SETPIPE_SZ and the arg is smaller
+ * than the amount of the current used buffer space.
+ * 3)fcntl fails with EPERM when cmd is F_SETPIPE_SZ and the arg is over
+ * /proc/sys/fs/pipe-max-size limit under unprivileged users.
+ */
+
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/types.h>
+#include <limits.h>
+#include <stdlib.h>
+#include "tst_test.h"
+#include "lapi/fcntl.h"
+#include "lapi/capability.h"
+
+static int fds[2];
+static unsigned int orig_value, invalid_value, half_value, sys_value;
+static char *wrbuf;
+
+static struct tcase {
+ unsigned int *setvalue;
+ int exp_err;
+ char *message;
+} tcases[] = {
+ {&invalid_value, EINVAL,
+ "cmd is F_SETPIPE_SZ and the arg is beyond UINT_MAX"},
+
+ {&half_value, EBUSY,
+ "cmd is F_SETPIPE_SZ and the arg is smaller than the amount of the current used buffer space"},
+ {&sys_value, EPERM,
+ "cmd is F_SETPIPE_SZ and the arg is over /proc/sys/fs/pipe-max-size limit under unprivileged users"},
+};
+
+static void verify_fcntl(unsigned int n)
+{
+ struct tcase *tc = &tcases[n];
+
+ tst_res(TINFO, "%s", tc->message);
+
+ TEST(fcntl(fds[1], F_SETPIPE_SZ, *(tc->setvalue)));
+ if (TST_RET != -1)
+ tst_res(TFAIL, "F_SETPIPE_SZ succeed");
+ if (TST_ERR == tc->exp_err)
+ tst_res(TPASS | TTERRNO, "F_SETPIPE_SZ failed as expected");
+ else
+ tst_res(TFAIL | TTERRNO, "F_SETPIPE_SZ failed expected %s bu got",
+ tst_strerrno(tc->exp_err));
+}
+
+static void setup(void)
+{
+ SAFE_PIPE(fds);
+
+ TEST(fcntl(fds[1], F_GETPIPE_SZ));
+ if (TST_ERR == EINVAL)
+ tst_brk(TCONF, "kernel doesn't support F_GET/SETPIPE_SZ");
+
+ orig_value = TST_RET;
+
+ wrbuf = SAFE_MALLOC(orig_value);
+ memset(wrbuf, 'x', orig_value);
+ SAFE_WRITE(1, fds[1], wrbuf, orig_value);
+
+ SAFE_FILE_SCANF("/proc/sys/fs/pipe-max-size", "%d", &sys_value);
+ sys_value++;
+
+ half_value = orig_value / 2;
+ invalid_value = (1U << 31) + 1;
+}
+
+static void cleanup(void)
+{
+ SAFE_FCNTL(fds[1], F_SETPIPE_SZ, orig_value);
+ if (fds[0] > 0)
+ SAFE_CLOSE(fds[0]);
+ if (fds[1] > 0)
+ SAFE_CLOSE(fds[1]);
+ if (wrbuf)
+ free(wrbuf);
+}
+
+static struct tst_test test = {
+ .setup = setup,
+ .cleanup = cleanup,
+ .tcnt = ARRAY_SIZE(tcases),
+ .test = verify_fcntl,
+ .caps = (struct tst_cap []) {
+ TST_CAP(TST_CAP_DROP, CAP_SYS_RESOURCE),
+ {}
+ },
+};
Signed-off-by: Yang Xu <xuyang2018.jy@cn.fujitsu.com> --- runtest/syscalls | 2 + testcases/kernel/syscalls/fcntl/.gitignore | 2 + testcases/kernel/syscalls/fcntl/fcntl37.c | 100 +++++++++++++++++++++ 3 files changed, 104 insertions(+) create mode 100644 testcases/kernel/syscalls/fcntl/fcntl37.c