OLD | NEW |
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 "sandbox/linux/services/yama.h" | 5 #include "sandbox/linux/services/yama.h" |
6 | 6 |
7 #include <fcntl.h> | 7 #include <fcntl.h> |
8 #include <sys/prctl.h> | 8 #include <sys/prctl.h> |
9 #include <sys/stat.h> | 9 #include <sys/stat.h> |
10 #include <sys/types.h> | 10 #include <sys/types.h> |
(...skipping 61 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
72 } | 72 } |
73 | 73 |
74 // static | 74 // static |
75 int Yama::GetStatus() { | 75 int Yama::GetStatus() { |
76 if (!CanAccessProcFS()) { | 76 if (!CanAccessProcFS()) { |
77 return 0; | 77 return 0; |
78 } | 78 } |
79 | 79 |
80 static const char kPtraceScopePath[] = "/proc/sys/kernel/yama/ptrace_scope"; | 80 static const char kPtraceScopePath[] = "/proc/sys/kernel/yama/ptrace_scope"; |
81 | 81 |
82 base::ScopedFD yama_scope(open(kPtraceScopePath, O_RDONLY)); | 82 base::ScopedFD yama_scope(HANDLE_EINTR(open(kPtraceScopePath, O_RDONLY))); |
83 | 83 |
84 if (!yama_scope.is_valid()) { | 84 if (!yama_scope.is_valid()) { |
85 const int open_errno = errno; | 85 const int open_errno = errno; |
86 DCHECK(ENOENT == open_errno); | 86 DCHECK(ENOENT == open_errno); |
87 // The status is known, yama is not present. | 87 // The status is known, yama is not present. |
88 return STATUS_KNOWN; | 88 return STATUS_KNOWN; |
89 } | 89 } |
90 | 90 |
91 char yama_scope_value = 0; | 91 char yama_scope_value = 0; |
92 ssize_t num_read = HANDLE_EINTR(read(yama_scope.get(), &yama_scope_value, 1)); | 92 ssize_t num_read = HANDLE_EINTR(read(yama_scope.get(), &yama_scope_value, 1)); |
(...skipping 14 matching lines...) Expand all Loading... |
107 } | 107 } |
108 } | 108 } |
109 | 109 |
110 // static | 110 // static |
111 bool Yama::IsPresent() { return GetStatus() & STATUS_PRESENT; } | 111 bool Yama::IsPresent() { return GetStatus() & STATUS_PRESENT; } |
112 | 112 |
113 // static | 113 // static |
114 bool Yama::IsEnforcing() { return GetStatus() & STATUS_ENFORCING; } | 114 bool Yama::IsEnforcing() { return GetStatus() & STATUS_ENFORCING; } |
115 | 115 |
116 } // namespace sandbox | 116 } // namespace sandbox |
OLD | NEW |