1 /* 2 * Copyright (C) 2013 Linux Test Project, Inc. 3 * 4 * This program is free software; you can redistribute it and/or 5 * modify it under the terms of version 2 of the GNU General Public 6 * License as published by the Free Software Foundation. 7 * 8 * This program is distributed in the hope that it would be useful, 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 11 * 12 * Further, this software is distributed without any warranty that it 13 * is free of the rightful claim of any third person regarding 14 * infringement or the like. Any license provided herein, whether 15 * implied or otherwise, applies only to this software file. Patent 16 * licenses, if any, provided herein do not apply to combinations of 17 * this program with other software, or any other product whatsoever. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write the Free Software 21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 22 * 02110-1301, USA. 23 */ 24 25 #define NS_MAX 5 26 static int ns_types[NS_MAX]; 27 static int ns_fds[NS_MAX]; 28 static int ns_total; 29 30 static int get_ns_fd(int pid, const char *ns) 31 { 32 char tmp[PATH_MAX]; 33 struct stat st; 34 int fd = -1; 35 36 sprintf(tmp, "/proc/%d/ns/%s", pid, ns); 37 if (stat(tmp, &st) == 0) { 38 fd = open(tmp, O_RDONLY); 39 if (fd == -1) 40 tst_brkm(TBROK|TERRNO, NULL, "failed to open %s", tmp); 41 } else { 42 if (errno != ENOENT) 43 tst_brkm(TBROK|TERRNO, NULL, "failed to stat %s", tmp); 44 } 45 return fd; 46 } 47 48 static void init_ns_type(int clone_type, const char *proc_name) 49 { 50 int fd; 51 52 fd = get_ns_fd(getpid(), proc_name); 53 if (fd != -1) { 54 ns_types[ns_total] = clone_type; 55 ns_fds[ns_total] = fd; 56 tst_resm(TINFO, "ns_name=%s, ns_fds[%d]=%d, ns_types[%d]=0x%x", 57 proc_name, ns_total, fd, ns_total, clone_type); 58 ns_total++; 59 } 60 } 61 62 static void init_available_ns(void) 63 { 64 #if defined(CLONE_NEWIPC) 65 init_ns_type(CLONE_NEWIPC, "ipc"); 66 #endif 67 #if defined(CLONE_NEWNS) 68 init_ns_type(CLONE_NEWNS, "mnt"); 69 #endif 70 #if defined(CLONE_NEWNET) 71 init_ns_type(CLONE_NEWNET, "net"); 72 #endif 73 #if defined(CLONE_NEWPID) 74 init_ns_type(CLONE_NEWPID, "pid"); 75 #endif 76 #if defined(CLONE_NEWUTS) 77 init_ns_type(CLONE_NEWUTS, "uts"); 78 #endif 79 } 80 81 static void close_ns_fds(void) 82 { 83 int i; 84 85 for (i = 0; i < ns_total; i++) 86 if (ns_fds[i] != -1) 87 close(ns_fds[i]); 88 } 89
