62 lines
1.2 KiB
C
62 lines
1.2 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2014 Red Hat, Inc. All rights reserved.
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* Copyright (C) 2022 SUSE LLC Andrea Cervesato <andrea.cervesato@suse.com>
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*/
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/*\
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* [Description]
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*
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* Clone a process with CLONE_NEWPID flag and check if procfs mounted folder
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* belongs to the new pid namespace by looking at /proc/self .
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*/
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#include <sys/mount.h>
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#include "tst_test.h"
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#include "lapi/sched.h"
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#define PROCDIR "proc"
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static int child_func(LTP_ATTRIBUTE_UNUSED void *arg)
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{
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char proc_self[10];
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SAFE_MOUNT("none", PROCDIR, "proc", MS_RDONLY, NULL);
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SAFE_READLINK(PROCDIR"/self", proc_self, sizeof(proc_self) - 1);
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SAFE_UMOUNT(PROCDIR);
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TST_EXP_PASS(strcmp(proc_self, "1"), PROCDIR"/self contains 1:");
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return 0;
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}
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static void setup(void)
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{
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SAFE_MKDIR(PROCDIR, 0555);
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}
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static void cleanup(void)
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{
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if (tst_is_mounted_at_tmpdir(PROCDIR))
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SAFE_UMOUNT(PROCDIR);
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}
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static void run(void)
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{
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int ret;
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ret = ltp_clone_quick(CLONE_NEWPID | SIGCHLD, child_func, NULL);
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if (ret < 0)
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tst_brk(TBROK | TERRNO, "clone failed");
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}
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static struct tst_test test = {
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.test_all = run,
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.setup = setup,
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.cleanup = cleanup,
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.needs_root = 1,
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.needs_tmpdir = 1,
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};
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