[LTP] [PATCH v3] syscalls/prctl05.c: New test for prctl() with PR_{SET, GET}_NAME
Yang Xu
xuyang2018.jy@cn.fujitsu.com
Fri May 24 09:50:46 CEST 2019
Signed-off-by: Yang Xu <xuyang2018.jy@cn.fujitsu.com>
---
include/lapi/prctl.h | 5 ++
runtest/syscalls | 1 +
testcases/kernel/syscalls/prctl/.gitignore | 1 +
testcases/kernel/syscalls/prctl/prctl05.c | 76 ++++++++++++++++++++++
4 files changed, 83 insertions(+)
create mode 100644 testcases/kernel/syscalls/prctl/prctl05.c
diff --git a/include/lapi/prctl.h b/include/lapi/prctl.h
index f42bd6459..ad0b12bce 100644
--- a/include/lapi/prctl.h
+++ b/include/lapi/prctl.h
@@ -9,6 +9,11 @@
#include <sys/prctl.h>
+#ifndef PR_SET_NAME
+# define PR_SET_NAME 15
+# define PR_GET_NAME 16
+#endif
+
#ifndef PR_SET_SECCOMP
# define PR_GET_SECCOMP 21
# define PR_SET_SECCOMP 22
diff --git a/runtest/syscalls b/runtest/syscalls
index 04558a580..d2dcd2152 100644
--- a/runtest/syscalls
+++ b/runtest/syscalls
@@ -862,6 +862,7 @@ prctl01 prctl01
prctl02 prctl02
prctl03 prctl03
prctl04 prctl04
+prctl05 prctl05
pread01 pread01
pread01_64 pread01_64
diff --git a/testcases/kernel/syscalls/prctl/.gitignore b/testcases/kernel/syscalls/prctl/.gitignore
index 1c3da3052..9ecaf9854 100644
--- a/testcases/kernel/syscalls/prctl/.gitignore
+++ b/testcases/kernel/syscalls/prctl/.gitignore
@@ -2,3 +2,4 @@
/prctl02
/prctl03
/prctl04
+/prctl05
diff --git a/testcases/kernel/syscalls/prctl/prctl05.c b/testcases/kernel/syscalls/prctl/prctl05.c
new file mode 100644
index 000000000..e1287abdf
--- /dev/null
+++ b/testcases/kernel/syscalls/prctl/prctl05.c
@@ -0,0 +1,76 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2019 FUJITSU LIMITED. All rights reserved.
+ * Author: Yang Xu <xuyang2018.jy@cn.fujitsu.com>
+ *
+ * Test PR_GET_NAME and PR_SET_NAME of prctl(2).
+ * 1)Set the name of the calling thread, the name can be up to 16 bytes
+ * long, including the terminating null byte. If exceeds 16 bytes, the
+ * string is silently truncated.
+ * 2)Return the name of the calling thread, the buffer should allow space
+ * for up to 16 bytes, the returned string will be null-terminated.
+ * 3)Check /proc/self/task/[tid]/comm name whether matches the thread name.
+ */
+
+#include <sys/prctl.h>
+#include <string.h>
+#include <stdio.h>
+#include "lapi/syscalls.h"
+#include "lapi/prctl.h"
+#include "tst_test.h"
+
+static struct tcase {
+ char setname[20];
+ char expname[20];
+} tcases[] = {
+ {"prctl05_test", "prctl05_test"},
+ {"prctl05_test_xxxxx", "prctl05_test_xx"}
+};
+
+static void verify_prctl(unsigned int n)
+{
+ char buf[20];
+ char comm_buf[20];
+ char PROC_NAME_PATH[40];
+ pid_t tid;
+ struct tcase *tc = &tcases[n];
+
+ TEST(prctl(PR_SET_NAME, tc->setname));
+ if (TST_RET == -1) {
+ tst_res(TFAIL | TTERRNO, "prctl(PR_SET_NAME) failed");
+ return;
+ }
+ tst_res(TPASS,
+ "prctl(PR_SET_NAME) succeeded, set thread name as %s", tc->setname);
+
+ TEST(prctl(PR_GET_NAME, buf));
+ if (TST_RET == -1) {
+ tst_res(TFAIL | TTERRNO, "prctl(PR_GET_NAME) failed");
+ return;
+ }
+
+ if (strcmp(tc->expname, buf))
+ tst_res(TFAIL,
+ "prctl(PR_GET_NAME) failed ,expected %s, got %s", tc->expname, buf);
+ else
+ tst_res(TPASS,
+ "prctl(PR_GET_NAME) succeeded, thread name is %s", buf);
+
+ tid = tst_syscall(__NR_gettid);
+
+ sprintf(PROC_NAME_PATH, "/proc/self/task/%d/comm", tid);
+ SAFE_FILE_SCANF(PROC_NAME_PATH, "%s", comm_buf);
+ if (strcmp(tc->expname, comm_buf))
+ tst_res(TFAIL,
+ "%s sets thread name failed, expected %s, got %s",
+ PROC_NAME_PATH, tc->expname, comm_buf);
+ else
+ tst_res(TPASS, "%s sets thread name succeed as %s",
+ PROC_NAME_PATH, comm_buf);
+
+}
+
+static struct tst_test test = {
+ .test = verify_prctl,
+ .tcnt = ARRAY_SIZE(tcases),
+};
--
2.18.1
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