[PATCH v3 0/7] SECCOMP based userspace for UML

[Benjamin Berg]

From: Benjamin Berg <benjamin.berg at intel.com>

Hi all,

we should be getting close to a usable SECCOMP patchset now. This
revision mostly fixes an issue with FP size detection and makes SECCOMP
mode a runtime rather than compile time option.

Benjamin

v3:
- Fix an issue where the FP size was not detected (memor was not shared)
- Use runtime configuration instead of compile time configuration

v2:
- Simple rebase dropping the merged patche

v1:
- Remove explicit (and insufficient) kconfig.h includes
- Change commit order to move configuration to the end
- Fix futex wait race condition
- Also handle child dying during stub startup

RFCv2:
- Fix FP handling on i386
- Improved MM list for userspace sigchild handling
- Remove kconfig.h includes
- Minor cleanups

Benjamin Berg (7):
  um: Move faultinfo extraction into userspace routine
  um: Add stub side of SECCOMP/futex based process handling
  um: Add helper functions to get/set state for SECCOMP
  um: Track userspace children dying in SECCOMP mode
  um: Implement kernel side of SECCOMP based process handling
  um: Add SECCOMP support detection and initialization
  um: pass FD for memory operations when needed

 arch/um/include/asm/irq.h                  |   5 +-
 arch/um/include/asm/mmu.h                  |   3 +
 arch/um/include/shared/common-offsets.h    |   4 +
 arch/um/include/shared/irq_user.h          |   2 +
 arch/um/include/shared/os.h                |   3 +-
 arch/um/include/shared/skas/mm_id.h        |   9 +
 arch/um/include/shared/skas/skas.h         |   1 +
 arch/um/include/shared/skas/stub-data.h    |  20 +-
 arch/um/kernel/irq.c                       |   6 +
 arch/um/kernel/skas/mmu.c                  |  89 +++-
 arch/um/kernel/skas/stub.c                 | 130 +++++-
 arch/um/kernel/skas/stub_exe.c             | 159 ++++++-
 arch/um/os-Linux/internal.h                |   5 +-
 arch/um/os-Linux/process.c                 |  31 ++
 arch/um/os-Linux/registers.c               |   4 +-
 arch/um/os-Linux/signal.c                  |  19 +-
 arch/um/os-Linux/skas/mem.c                | 103 ++++-
 arch/um/os-Linux/skas/process.c            | 482 +++++++++++++++------
 arch/um/os-Linux/start_up.c                | 181 +++++++-
 arch/x86/um/os-Linux/mcontext.c            | 218 +++++++++-
 arch/x86/um/ptrace.c                       |  76 +++-
 arch/x86/um/shared/sysdep/kernel-offsets.h |   2 +
 arch/x86/um/shared/sysdep/mcontext.h       |   9 +
 arch/x86/um/shared/sysdep/stub-data.h      |  23 +
 arch/x86/um/shared/sysdep/stub.h           |   2 +
 arch/x86/um/shared/sysdep/stub_32.h        |  13 +
 arch/x86/um/shared/sysdep/stub_64.h        |  17 +
 arch/x86/um/tls_32.c                       |  23 +-
 28 files changed, 1434 insertions(+), 205 deletions(-)
 create mode 100644 arch/x86/um/shared/sysdep/stub-data.h

-- 
2.49.0