1/* 2 * Copyright (c) 2011 Damien Miller <djm@mindrot.org> 3 * 4 * Permission to use, copy, modify, and distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15 */ 16 17#include "includes.h" 18 19#ifdef SANDBOX_DARWIN 20 21#include <sys/types.h> 22 23#include <sandbox.h> 24 25#include <errno.h> 26#include <stdarg.h> 27#include <stdio.h> 28#include <stdlib.h> 29#include <string.h> 30#include <unistd.h> 31 32#include "log.h" 33#include "sandbox.h" 34#include "xmalloc.h" 35 36/* Darwin/OS X sandbox */ 37 38struct ssh_sandbox { 39 pid_t child_pid; 40}; 41 42struct ssh_sandbox *
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44{ 45 struct ssh_sandbox *box; 46 47 /* 48 * Strictly, we don't need to maintain any state here but we need 49 * to return non-NULL to satisfy the API. 50 */ 51 debug3("%s: preparing Darwin sandbox", __func__); 52 box = xcalloc(1, sizeof(*box)); 53 box->child_pid = 0; 54 55 return box; 56} 57 58void 59ssh_sandbox_child(struct ssh_sandbox *box) 60{ 61 char *errmsg; 62 struct rlimit rl_zero; 63 64 debug3("%s: starting Darwin sandbox", __func__); 65 if (sandbox_init(kSBXProfilePureComputation, SANDBOX_NAMED, 66 &errmsg) == -1) 67 fatal("%s: sandbox_init: %s", __func__, errmsg); 68 69 /* 70 * The kSBXProfilePureComputation still allows sockets, so 71 * we must disable these using rlimit. 72 */ 73 rl_zero.rlim_cur = rl_zero.rlim_max = 0; 74 if (setrlimit(RLIMIT_FSIZE, &rl_zero) == -1) 75 fatal("%s: setrlimit(RLIMIT_FSIZE, { 0, 0 }): %s", 76 __func__, strerror(errno)); 77 if (setrlimit(RLIMIT_NOFILE, &rl_zero) == -1) 78 fatal("%s: setrlimit(RLIMIT_NOFILE, { 0, 0 }): %s", 79 __func__, strerror(errno)); 80 if (setrlimit(RLIMIT_NPROC, &rl_zero) == -1) 81 fatal("%s: setrlimit(RLIMIT_NPROC, { 0, 0 }): %s", 82 __func__, strerror(errno)); 83} 84 85void 86ssh_sandbox_parent_finish(struct ssh_sandbox *box) 87{ 88 free(box); 89 debug3("%s: finished", __func__); 90} 91 92void 93ssh_sandbox_parent_preauth(struct ssh_sandbox *box, pid_t child_pid) 94{ 95 box->child_pid = child_pid; 96} 97 98#endif /* SANDBOX_DARWIN */
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