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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "components/nacl/loader/nonsfi/nonsfi_sandbox.h" | 5 #include "components/nacl/loader/nonsfi/nonsfi_sandbox.h" |
6 | 6 |
7 #include <errno.h> | 7 #include <errno.h> |
8 #include <fcntl.h> | 8 #include <fcntl.h> |
9 #include <linux/futex.h> | 9 #include <linux/futex.h> |
10 #include <linux/net.h> | 10 #include <linux/net.h> |
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125 // so we do not need to allow PROT_EXEC in mmap. | 125 // so we do not need to allow PROT_EXEC in mmap. |
126 const uint64_t kAllowedProtMask = PROT_READ | PROT_WRITE; | 126 const uint64_t kAllowedProtMask = PROT_READ | PROT_WRITE; |
127 const Arg<int> prot(2), flags(3); | 127 const Arg<int> prot(2), flags(3); |
128 return If((prot & ~kAllowedProtMask) == 0 && (flags & ~kAllowedFlagMask) == 0, | 128 return If((prot & ~kAllowedProtMask) == 0 && (flags & ~kAllowedFlagMask) == 0, |
129 Allow()).Else(CrashSIGSYS()); | 129 Allow()).Else(CrashSIGSYS()); |
130 } | 130 } |
131 | 131 |
132 #if defined(__x86_64__) || defined(__arm__) | 132 #if defined(__x86_64__) || defined(__arm__) |
133 ResultExpr RestrictSocketpair() { | 133 ResultExpr RestrictSocketpair() { |
134 // Only allow AF_UNIX, PF_UNIX. Crash if anything else is seen. | 134 // Only allow AF_UNIX, PF_UNIX. Crash if anything else is seen. |
135 COMPILE_ASSERT(AF_UNIX == PF_UNIX, af_unix_pf_unix_different); | 135 static_assert(AF_UNIX == PF_UNIX, "AF_UNIX must equal PF_UNIX."); |
136 const Arg<int> domain(0); | 136 const Arg<int> domain(0); |
137 return If(domain == AF_UNIX, Allow()).Else(CrashSIGSYS()); | 137 return If(domain == AF_UNIX, Allow()).Else(CrashSIGSYS()); |
138 } | 138 } |
139 #endif | 139 #endif |
140 | 140 |
141 bool IsGracefullyDenied(int sysno) { | 141 bool IsGracefullyDenied(int sysno) { |
142 switch (sysno) { | 142 switch (sysno) { |
143 // libevent tries this first and then falls back to poll if | 143 // libevent tries this first and then falls back to poll if |
144 // epoll_create fails. | 144 // epoll_create fails. |
145 case __NR_epoll_create: | 145 case __NR_epoll_create: |
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306 new nacl::nonsfi::NaClNonSfiBPFSandboxPolicy()), | 306 new nacl::nonsfi::NaClNonSfiBPFSandboxPolicy()), |
307 proc_task_fd.Pass()); | 307 proc_task_fd.Pass()); |
308 if (!sandbox_is_initialized) | 308 if (!sandbox_is_initialized) |
309 return false; | 309 return false; |
310 RunSandboxSanityChecks(); | 310 RunSandboxSanityChecks(); |
311 return true; | 311 return true; |
312 } | 312 } |
313 | 313 |
314 } // namespace nonsfi | 314 } // namespace nonsfi |
315 } // namespace nacl | 315 } // namespace nacl |
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