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89 lines
2.3 KiB
89 lines
2.3 KiB
/*
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* Copyright (C) 2013 Linux Test Project, Inc.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of version 2 of the GNU General Public
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* License as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would 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.
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*
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* Further, this software is distributed without any warranty that it
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* is free of the rightful claim of any third person regarding
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* infringement or the like. Any license provided herein, whether
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* implied or otherwise, applies only to this software file. Patent
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* licenses, if any, provided herein do not apply to combinations of
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* this program with other software, or any other product whatsoever.
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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, write the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*/
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#define NS_MAX 5
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static int ns_types[NS_MAX];
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static int ns_fds[NS_MAX];
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static int ns_total;
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static int get_ns_fd(int pid, const char *ns)
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{
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char tmp[PATH_MAX];
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struct stat st;
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int fd = -1;
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sprintf(tmp, "/proc/%d/ns/%s", pid, ns);
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if (stat(tmp, &st) == 0) {
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fd = open(tmp, O_RDONLY);
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if (fd == -1)
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tst_brkm(TBROK|TERRNO, NULL, "failed to open %s", tmp);
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} else {
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if (errno != ENOENT)
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tst_brkm(TBROK|TERRNO, NULL, "failed to stat %s", tmp);
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}
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return fd;
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}
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static void init_ns_type(int clone_type, const char *proc_name)
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{
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int fd;
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fd = get_ns_fd(getpid(), proc_name);
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if (fd != -1) {
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ns_types[ns_total] = clone_type;
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ns_fds[ns_total] = fd;
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tst_resm(TINFO, "ns_name=%s, ns_fds[%d]=%d, ns_types[%d]=0x%x",
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proc_name, ns_total, fd, ns_total, clone_type);
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ns_total++;
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}
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}
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static void init_available_ns(void)
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{
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#if defined(CLONE_NEWIPC)
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init_ns_type(CLONE_NEWIPC, "ipc");
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#endif
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#if defined(CLONE_NEWNS)
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init_ns_type(CLONE_NEWNS, "mnt");
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#endif
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#if defined(CLONE_NEWNET)
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init_ns_type(CLONE_NEWNET, "net");
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#endif
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#if defined(CLONE_NEWPID)
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init_ns_type(CLONE_NEWPID, "pid");
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#endif
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#if defined(CLONE_NEWUTS)
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init_ns_type(CLONE_NEWUTS, "uts");
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#endif
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}
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static void close_ns_fds(void)
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{
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int i;
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for (i = 0; i < ns_total; i++)
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if (ns_fds[i] != -1)
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close(ns_fds[i]);
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}
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