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| author | agl@chromium.org <agl@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2009-08-04 17:52:04 +0000 |
|---|---|---|
| committer | agl@chromium.org <agl@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2009-08-04 17:52:04 +0000 |
| commit | 80a086c59537a006c36c8433a011f0a76e8a84d4 (patch) | |
| tree | 2790c0bef400c2a8c31f4d0312b48a7b6f107781 /base/sys_info_posix.cc | |
| parent | 96921d17f7932adaa6cc5afc37b3d13c46715ae5 (diff) | |
| download | chromium_src-80a086c59537a006c36c8433a011f0a76e8a84d4.zip chromium_src-80a086c59537a006c36c8433a011f0a76e8a84d4.tar.gz chromium_src-80a086c59537a006c36c8433a011f0a76e8a84d4.tar.bz2 | |
Linux: don't try and read shmmax in the sandbox.
In the sandbox, reading shmmax from proc always fails. Thus, we move
the function into base and call it before starting the sandbox. The
value is then cached.
http://codereview.chromium.org/159843
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@22393 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'base/sys_info_posix.cc')
| -rw-r--r-- | base/sys_info_posix.cc | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/base/sys_info_posix.cc b/base/sys_info_posix.cc index 388ccba..23156e2 100644 --- a/base/sys_info_posix.cc +++ b/base/sys_info_posix.cc @@ -2,6 +2,7 @@ // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. +#include "base/file_util.h" #include "base/sys_info.h" #include "base/basictypes.h" @@ -150,4 +151,21 @@ size_t SysInfo::VMAllocationGranularity() { return getpagesize(); } +#if defined(OS_LINUX) +// static +size_t SysInfo::MaxSharedMemorySize() { + static size_t limit; + static bool limit_valid = false; + + if (!limit_valid) { + std::string contents; + file_util::ReadFileToString(FilePath("/proc/sys/kernel/shmmax"), &contents); + limit = strtoul(contents.c_str(), NULL, 0); + limit_valid = true; + } + + return limit; +} +#endif + } // namespace base |