errno tests for setns(2) - reassociate thread with a namespace
Signed-off-by: Jan Stancek <[email protected]>
---
runtest/syscalls | 2 +
testcases/kernel/syscalls/.gitignore | 1 +
testcases/kernel/syscalls/setns/setns.h | 88 +++++++++++
testcases/kernel/syscalls/setns/setns01.c | 240 +++++++++++++++++++++++++++++
4 files changed, 331 insertions(+), 0 deletions(-)
create mode 100644 testcases/kernel/syscalls/setns/setns.h
create mode 100644 testcases/kernel/syscalls/setns/setns01.c
diff --git a/runtest/syscalls b/runtest/syscalls
index db5a075..a881479 100644
--- a/runtest/syscalls
+++ b/runtest/syscalls
@@ -962,6 +962,8 @@ setitimer01 setitimer01
setitimer02 setitimer02
setitimer03 setitimer03
+setns01 setns01
+
setpgid01 setpgid01
setpgid02 setpgid02
setpgid03 setpgid03
diff --git a/testcases/kernel/syscalls/.gitignore
b/testcases/kernel/syscalls/.gitignore
index d661159..4b8bb94 100644
--- a/testcases/kernel/syscalls/.gitignore
+++ b/testcases/kernel/syscalls/.gitignore
@@ -764,6 +764,7 @@
/setitimer/setitimer01
/setitimer/setitimer02
/setitimer/setitimer03
+/setns/setns01
/setpgid/setpgid01
/setpgid/setpgid02
/setpgid/setpgid03
diff --git a/testcases/kernel/syscalls/setns/setns.h
b/testcases/kernel/syscalls/setns/setns.h
new file mode 100644
index 0000000..23bdb2e
--- /dev/null
+++ b/testcases/kernel/syscalls/setns/setns.h
@@ -0,0 +1,88 @@
+/*
+ * Copyright (C) 2013 Linux Test Project, 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.
+ */
+
+#define NS_MAX 5
+static int ns_types[NS_MAX];
+static int ns_fds[NS_MAX];
+static int ns_total;
+
+static int get_ns_fd(int pid, const char *ns)
+{
+ char tmp[PATH_MAX];
+ struct stat st;
+ int fd = -1;
+
+ sprintf(tmp, "/proc/%d/ns/%s", pid, ns);
+ if (stat(tmp, &st) == 0) {
+ fd = open(tmp, O_RDONLY);
+ if (fd == -1)
+ tst_brkm(TBROK|TERRNO, NULL, "failed to open %s", tmp);
+ } else {
+ if (errno != ENOENT)
+ tst_brkm(TBROK|TERRNO, NULL, "failed to stat %s", tmp);
+ }
+ return fd;
+}
+
+static void init_ns_type(int clone_type, const char *proc_name)
+{
+ int fd;
+
+ fd = get_ns_fd(getpid(), proc_name);
+ if (fd != -1) {
+ ns_types[ns_total] = clone_type;
+ ns_fds[ns_total] = fd;
+ tst_resm(TINFO, "ns_fds[%d]=%d, ns_types[%d]=0x%x", ns_total,
+ fd, ns_total, clone_type);
+ ns_total++;
+ }
+}
+
+static void init_available_ns(void)
+{
+#if defined(CLONE_NEWIPC)
+ init_ns_type(CLONE_NEWIPC, "ipc");
+#endif
+#if defined(CLONE_NEWNS)
+ init_ns_type(CLONE_NEWNS, "mnt");
+#endif
+#if defined(CLONE_NEWNET)
+ init_ns_type(CLONE_NEWNET, "net");
+#endif
+#if defined(CLONE_NEWPID)
+ init_ns_type(CLONE_NEWPID, "pid");
+#endif
+#if defined(CLONE_NEWUTS)
+ init_ns_type(CLONE_NEWUTS, "uts");
+#endif
+}
+
+static void close_ns_fds(void)
+{
+ int i;
+
+ for (i = 0; i < ns_total; i++)
+ if (ns_fds[i] != -1)
+ close(ns_fds[i]);
+}
diff --git a/testcases/kernel/syscalls/setns/setns01.c
b/testcases/kernel/syscalls/setns/setns01.c
new file mode 100644
index 0000000..710ce9b
--- /dev/null
+++ b/testcases/kernel/syscalls/setns/setns01.c
@@ -0,0 +1,240 @@
+/*
+ * Copyright (C) 2013 Linux Test Project, 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.
+ */
+/*
+ * errno tests for setns(2) - reassociate thread with a namespace
+ */
+#define _GNU_SOURCE
+#include <sys/stat.h>
+#include <sys/syscall.h>
+#include <sys/types.h>
+#include <errno.h>
+#include <sched.h>
+#include <pwd.h>
+#include <string.h>
+#include "config.h"
+#include "test.h"
+#include "usctest.h"
+#include "linux_syscall_numbers.h"
+#include "safe_macros.h"
+
+char *TCID = "setns01";
+
+#if defined(__NR_setns)
+#include "setns.h"
+
+struct testcase_t {
+ const char *msg;
+ int fd;
+ int ns_type;
+ int exp_ret;
+ int exp_errno;
+ int skip;
+ void (*setup) (struct testcase_t *, int i);
+ void (*cleanup) (struct testcase_t *);
+};
+
+static void setup(void);
+static void cleanup(void);
+static void setup0(struct testcase_t *, int);
+static void setup1(struct testcase_t *, int);
+static void setup2(struct testcase_t *, int);
+static void setup3(struct testcase_t *, int);
+static void setup4(struct testcase_t *, int);
+static void cleanup1(struct testcase_t *);
+static void cleanup4(struct testcase_t *);
+
+struct testcase_t tdat[] = {
+ {
+ .msg = "invalid fd",
+ .fd = -1,
+ .exp_ret = -1,
+ .exp_errno = EBADF,
+ .setup = setup0,
+ },
+ {
+ .msg = "regular file fd",
+ .exp_ret = -1,
+ .exp_errno = EINVAL,
+ .setup = setup1,
+ .cleanup = cleanup1
+ },
+ {
+ .msg = "invalid ns_type",
+ .ns_type = -1,
+ .exp_ret = -1,
+ .exp_errno = EINVAL,
+ .setup = setup2,
+ },
+ {
+ .msg = "mismatch ns_type/fd",
+ .exp_ret = -1,
+ .exp_errno = EINVAL,
+ .setup = setup3,
+ },
+ {
+ .msg = "without CAP_SYS_ADMIN",
+ .exp_ret = -1,
+ .exp_errno = EPERM,
+ .setup = setup4,
+ .cleanup = cleanup4,
+ }
+};
+
+static int TST_TOTAL = sizeof(tdat) / sizeof(tdat[0]);
+static const char nobody_uid[] = "nobody";
+static struct passwd *ltpuser;
+
+static void setup0(struct testcase_t *t, int i)
+{
+ t->ns_type = ns_types[i];
+}
+
+static void setup1(struct testcase_t *t, int i)
+{
+ t->ns_type = ns_types[i];
+ t->fd = open("dummy", O_CREAT);
+ if (t->fd == -1)
+ tst_brkm(TFAIL|TERRNO, cleanup, "setup1:open failed");
+ unlink("dummy");
+}
+
+static void cleanup1(struct testcase_t *t)
+{
+ close(t->fd);
+}
+
+static void setup2(struct testcase_t *t, int i)
+{
+ t->fd = ns_fds[i];
+}
+
+static void setup3(struct testcase_t *t, int i)
+{
+ if (ns_total < 2) {
+ t->skip = 1;
+ return;
+ }
+
+ t->fd = ns_fds[i];
+ t->ns_type = ns_types[(i+1) % ns_total];
+}
+
+static void setup4(struct testcase_t *t, int i)
+{
+ if (seteuid(ltpuser->pw_uid) == -1)
+ tst_brkm(TBROK | TERRNO, NULL, "seteuid failed");
+
+ t->fd = ns_fds[i];
+ t->ns_type = ns_types[i];
+}
+
+static void cleanup4(struct testcase_t *t)
+{
+ if (seteuid(0) == -1)
+ tst_brkm(TBROK | TERRNO, NULL, "seteuid restore failed");
+}
+
+static void test_setns(struct testcase_t *t)
+{
+ int ret, i;
+
+ for (i = 0; i < ns_total; i++) {
+ if (t->setup)
+ t->setup(t, i);
+
+ if (t->skip) {
+ tst_resm(TINFO, "skip %s", tdat->msg);
+ continue;
+ }
+
+ tst_resm(TINFO, "setns(%d, 0x%x)", t->fd, t->ns_type);
+ ret = syscall(__NR_setns, t->fd, t->ns_type);
+ if (ret == t->exp_ret) {
+ if (ret == -1 && errno == t->exp_errno)
+ tst_resm(TPASS, "%s exp_errno=%d", t->msg,
+ t->exp_errno);
+ else
+ tst_resm(TFAIL|TERRNO, "%s exp_errno=%d",
+ t->msg, t->exp_errno);
+ } else {
+ tst_resm(TFAIL, "%s ret=%d expected=%d", t->msg,
+ ret, t->exp_ret);
+ }
+
+ if (t->cleanup)
+ t->cleanup(t);
+ }
+}
+
+int main(int argc, char *argv[])
+{
+ int lc, testno;
+ 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++) {
+ for (testno = 0; testno < TST_TOTAL; testno++)
+ test_setns(&tdat[testno]);
+ }
+ cleanup();
+ tst_exit();
+}
+
+static void setup(void)
+{
+ tst_require_root(NULL);
+
+ /* runtime check if syscall is supported */
+ ltp_syscall(__NR_setns, -1, 0);
+
+ init_available_ns();
+ if (ns_total == 0)
+ tst_brkm(TCONF, NULL, "no ns types/proc entries");
+
+ ltpuser = getpwnam(nobody_uid);
+ if (ltpuser == NULL)
+ tst_brkm(TBROK | TERRNO, NULL, "getpwnam failed");
+
+
+ tst_tmpdir();
+ TEST_PAUSE;
+}
+
+static void cleanup(void)
+{
+ close_ns_fds();
+ tst_rmdir();
+ TEST_CLEANUP;
+}
+#else
+int main(int argc, char *argv[])
+{
+ tst_brkm(TCONF, NULL, "__NR_setns is not defined on your system.");
+
+}
+#endif
--
1.7.1
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