1 /* $OpenBSD: sandbox-pledge.c,v 1.2 2020/10/18 11:32:01 djm Exp $ */ 2 /* 3 * Copyright (c) 2015 Theo de Raadt <deraadt@openbsd.org> 4 * 5 * Permission to use, copy, modify, and distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 */ 17 18 #include <sys/types.h> 19 #include <sys/ioctl.h> 20 #include <sys/syscall.h> 21 #include <sys/socket.h> 22 #include <sys/wait.h> 23 24 #include <errno.h> 25 #include <limits.h> 26 #include <stdarg.h> 27 #include <stdio.h> 28 #include <stdlib.h> 29 #include <unistd.h> 30 #include <pwd.h> 31 32 #include "log.h" 33 #include "ssh-sandbox.h" 34 #include "xmalloc.h" 35 36 struct ssh_sandbox { 37 pid_t child_pid; 38 }; 39 40 struct ssh_sandbox * 41 ssh_sandbox_init(void) 42 { 43 struct ssh_sandbox *box; 44 45 debug3_f("preparing pledge sandbox"); 46 box = xcalloc(1, sizeof(*box)); 47 box->child_pid = 0; 48 49 return box; 50 } 51 52 void 53 ssh_sandbox_child(struct ssh_sandbox *box) 54 { 55 if (pledge("stdio", NULL) == -1) 56 fatal_f("pledge()"); 57 } 58 59 void 60 ssh_sandbox_parent_finish(struct ssh_sandbox *box) 61 { 62 free(box); 63 debug3_f("finished"); 64 } 65 66 void 67 ssh_sandbox_parent_preauth(struct ssh_sandbox *box, pid_t child_pid) 68 { 69 box->child_pid = child_pid; 70 /* Nothing to do here */ 71 } 72