81 lines
2.2 KiB
C
81 lines
2.2 KiB
C
/*
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* Copyright (c) International Business Machines Corp., 2008
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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* the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* Author: Veerendra C <vechandr@in.ibm.com>
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*
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* Net namespaces were introduced around 2.6.25. Kernels before that,
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* assume they are not enabled. Kernels after that, check for -EINVAL
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* when trying to use CLONE_NEWNET and CLONE_NEWNS.
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***************************************************************************/
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#define _GNU_SOURCE
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#include <sched.h>
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#include "config.h"
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#include "libclone.h"
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#include "lapi/syscalls.h"
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#include "test.h"
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#include "safe_macros.h"
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#ifndef CLONE_NEWNS
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#define CLONE_NEWNS -1
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#endif
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static void check_iproute(unsigned int spe_ipver)
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{
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FILE *ipf;
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int n;
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unsigned int ipver = 0;
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ipf = popen("ip -V", "r");
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if (ipf == NULL)
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tst_brkm(TCONF, NULL,
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"Failed while opening pipe for iproute check");
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n = fscanf(ipf, "ip utility, iproute2-ss%u", &ipver);
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if (n < 1) {
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tst_brkm(TCONF, NULL,
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"Failed while obtaining version for iproute check");
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}
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if (ipver < spe_ipver) {
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tst_brkm(TCONF, NULL, "The commands in iproute tools do "
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"not support required objects");
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}
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pclose(ipf);
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}
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static int dummy(void *arg)
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{
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(void) arg;
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return 0;
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}
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static void check_netns(void)
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{
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int pid, status;
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/* Checking if the kernel supports unshare with netns capabilities. */
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if (CLONE_NEWNS == -1)
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tst_brkm(TCONF | TERRNO, NULL, "CLONE_NEWNS (%d) not supported",
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CLONE_NEWNS);
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pid = do_clone_unshare_test(T_UNSHARE, CLONE_NEWNET | CLONE_NEWNS,
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dummy, NULL);
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if (pid == -1)
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tst_brkm(TCONF | TERRNO, NULL,
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"unshare syscall smoke test failed");
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SAFE_WAIT(NULL, &status);
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}
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