Index: base/debug/proc_maps.cc |
diff --git a/base/debug/proc_maps.cc b/base/debug/proc_maps.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..41ae1a3afa2bd25029529f0425976339383db813 |
--- /dev/null |
+++ b/base/debug/proc_maps.cc |
@@ -0,0 +1,107 @@ |
+// Copyright (c) 2013 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#include "base/debug/proc_maps.h" |
+ |
+#if defined(OS_LINUX) |
+#include <inttypes.h> |
+#endif |
+ |
+#if defined(OS_ANDROID) |
+// Bionic's inttypes.h defines PRI/SCNxPTR as an unsigned long int, which |
+// is incompatible with Bionic's stdint.h defining uintptr_t as a unsigned int. |
+#define SCNxPTR "x" |
scherkus (not reviewing)
2013/07/01 22:01:01
digit: any ideas on Bionic stdint.h vs inttypes.h?
digit
2013/07/02 09:24:18
Looks like a real bug. I just filed https://code.g
scherkus (not reviewing)
2013/07/02 18:21:00
Thanks for taking a look. Updated CL to include li
|
+#endif |
+ |
+#include "base/file_util.h" |
+#include "base/strings/string_split.h" |
+ |
+namespace base { |
+namespace debug { |
+ |
+#if defined(OS_LINUX) || defined(OS_ANDROID) |
+ |
+std::string ReadProcMaps() { |
+ std::string proc_maps; |
+ FilePath proc_maps_path("/proc/self/maps"); |
+ if (!file_util::ReadFileToString(proc_maps_path, &proc_maps)) |
+ proc_maps.clear(); |
+ return proc_maps; |
+} |
+ |
+bool ParseProcMaps(const std::string& input, |
+ std::vector<MappedMemoryRegion>* regions_out) { |
+ std::vector<MappedMemoryRegion> regions; |
+ |
+ // This isn't async safe nor terribly efficient, but it doesn't need to be at |
+ // this point in time. |
+ std::vector<std::string> lines; |
+ SplitString(input, '\n', &lines); |
+ |
+ for (size_t i = 0; i < lines.size(); ++i) { |
+ // Ignore empty lines produced by splitting on '\n'. |
+ if (lines[i].empty()) |
+ continue; |
+ |
+ const char* line = lines[i].c_str(); |
+ uintptr_t start = 0; |
+ uintptr_t end = 0; |
+ char permissions[4] = {'\0'}; |
+ size_t offset = 0; |
+ uint8 dev_major = 0; |
+ uint8 dev_minor = 0; |
+ int inode = 0; |
+ int path_index = 0; |
+ |
+ // Sample format from man 5 proc: |
+ // |
+ // address perms offset dev inode pathname |
+ // 08048000-08056000 r-xp 00000000 03:0c 64593 /usr/sbin/gpm |
+ // |
+ // The final %n term captures the offset in the input string, which is used |
+ // to determine the path name. |
+ if (sscanf(line, "%" SCNxPTR "-%" SCNxPTR " %4c %zx %hhx:%hhx %d %n", |
+ &start, &end, permissions, &offset, &dev_major, &dev_minor, |
+ &inode, &path_index) < 7) { |
+ return false; |
+ } |
+ |
+ MappedMemoryRegion region; |
+ region.start = start; |
+ region.end = end; |
+ region.offset = offset; |
+ region.permissions = 0; |
+ |
+ if (permissions[0] == 'r') |
+ region.permissions |= MappedMemoryRegion::READ; |
+ else if (permissions[0] != '-') |
+ return false; |
+ |
+ if (permissions[1] == 'w') |
+ region.permissions |= MappedMemoryRegion::WRITE; |
+ else if (permissions[1] != '-') |
+ return false; |
+ |
+ if (permissions[2] == 'x') |
+ region.permissions |= MappedMemoryRegion::EXECUTE; |
+ else if (permissions[2] != '-') |
+ return false; |
+ |
+ if (permissions[3] == 'p') |
+ region.permissions |= MappedMemoryRegion::PRIVATE; |
+ else if (permissions[3] != 's') // Shared memory. |
+ return false; |
+ |
+ region.path = FilePath(line + path_index); |
+ regions.push_back(region); |
+ } |
+ |
+ regions_out->swap(regions); |
+ return true; |
+} |
+ |
+#endif |
+ |
+} // namespace debug |
+} // namespace base |