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| author | Andreas Kling <awesomekling@gmail.com> | 2019-10-01 19:31:55 +0200 |
|---|---|---|
| committer | Andreas Kling <awesomekling@gmail.com> | 2019-10-01 19:31:55 +0200 |
| commit | 3d4ed7f38def0b018c2a9c02da0e331e46f01f43 (patch) | |
| tree | 4b3a8ff950db31f6ae11f3ab55af99f36a614bb8 /Kernel | |
| parent | c58d1868cbe9b9b2d17026f66ed7ee9c3fe90450 (diff) | |
| download | serenity-3d4ed7f38def0b018c2a9c02da0e331e46f01f43.zip | |
Kernel: mmap() with both MAP_PRIVATE and MAP_SHARED is an error
Diffstat (limited to 'Kernel')
| -rw-r--r-- | Kernel/Process.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/Kernel/Process.cpp b/Kernel/Process.cpp index c72388c962..4441433750 100644 --- a/Kernel/Process.cpp +++ b/Kernel/Process.cpp @@ -206,6 +206,8 @@ void* Process::sys$mmap(const Syscall::SC_mmap_params* params) return (void*)-EINVAL; if ((u32)addr & ~PAGE_MASK) return (void*)-EINVAL; + if ((flags & MAP_SHARED) && (flags & MAP_PRIVATE)) + return (void*)-EINVAL; if (flags & MAP_ANONYMOUS) { auto* region = allocate_region(VirtualAddress((u32)addr), size, name ? name : "mmap", prot, false); if (!region) |