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| author | erikchen <erikchen@chromium.org> | 2015-10-23 14:05:26 -0700 |
|---|---|---|
| committer | Commit bot <commit-bot@chromium.org> | 2015-10-23 21:07:10 +0000 |
| commit | 033bbbcb63cab781552dfb435c035131c423de30 (patch) | |
| tree | 35df53ec759aebbbdaefe55d112227af3f820edb /ipc/test_util_mac.h | |
| parent | 86ef231cbe4c52bede41d583519898a9a345c987 (diff) | |
| download | chromium_src-033bbbcb63cab781552dfb435c035131c423de30.zip chromium_src-033bbbcb63cab781552dfb435c035131c423de30.tar.gz chromium_src-033bbbcb63cab781552dfb435c035131c423de30.tar.bz2 | |
mac: Add auto-close and share-read-only functionality to Mach based SharedMemory.
base::FileDescriptor has a property |auto_close| that is used to indicate that
when the object is passed to an IPC message, the message takes ownership of the
underlying OS handle. Since SharedMemoryHandle needs to be interchangeable with
base::FileDescriptor, I added a property with similar functionality named
|ownership_passes_to_ipc_|.
The method ShareToProcess() is used to lower the current and maximum protection
of the underlying OS handle before it is transferred to a different process. I
implemented this functionality for Mach memory objects.
BUG=535711
Review URL: https://codereview.chromium.org/1418113003
Cr-Commit-Position: refs/heads/master@{#355880}
Diffstat (limited to 'ipc/test_util_mac.h')
| -rw-r--r-- | ipc/test_util_mac.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/ipc/test_util_mac.h b/ipc/test_util_mac.h index e976ce0..6ed4d19 100644 --- a/ipc/test_util_mac.h +++ b/ipc/test_util_mac.h @@ -50,6 +50,11 @@ mach_port_urefs_t GetMachRefCount(mach_port_name_t name, // Increments the ref count for the right/name pair. void IncrementMachRefCount(mach_port_name_t name, mach_port_right_t right); +// Gets the current and maximum protection levels of the memory region. +// Returns whether the operation was successful. +// |current| and |max| are output variables only populated on success. +bool GetMachProtections(void* address, size_t size, int* current, int* max); + } // namespace IPC #endif // IPC_TEST_UTIL_MAC_H_ |