diff options
author | Damien Miller <djm@mindrot.org> | 2011-06-27 07:18:18 +1000 |
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committer | Damien Miller <djm@mindrot.org> | 2011-06-27 07:18:18 +1000 |
commit | cd5e52ee784f0ff67b60ffeeab335ed64df688a4 (patch) | |
tree | 26405057dba53c82c603b3bb360faf81d6ff9e33 /sandbox-darwin.c | |
parent | dcbd41e7aff4c7ef10dd13d8833a8cba82f9a794 (diff) |
- (djm) [configure.ac Makefile.in sandbox-darwin.c] Add a sandbox for
Darwin/OS X using sandbox_init() + setrlimit(); feedback and testing
markus@
Diffstat (limited to 'sandbox-darwin.c')
-rw-r--r-- | sandbox-darwin.c | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/sandbox-darwin.c b/sandbox-darwin.c new file mode 100644 index 000000000..69901ef14 --- /dev/null +++ b/sandbox-darwin.c | |||
@@ -0,0 +1,98 @@ | |||
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 | |||
38 | struct ssh_sandbox { | ||
39 | pid_t child_pid; | ||
40 | }; | ||
41 | |||
42 | struct ssh_sandbox * | ||
43 | ssh_sandbox_init(void) | ||
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 | |||
58 | void | ||
59 | ssh_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 | |||
85 | void | ||
86 | ssh_sandbox_parent_finish(struct ssh_sandbox *box) | ||
87 | { | ||
88 | free(box); | ||
89 | debug3("%s: finished", __func__); | ||
90 | } | ||
91 | |||
92 | void | ||
93 | ssh_sandbox_parent_preauth(struct ssh_sandbox *box, pid_t child_pid) | ||
94 | { | ||
95 | box->child_pid = child_pid; | ||
96 | } | ||
97 | |||
98 | #endif /* SANDBOX_DARWIN */ | ||