Commit graph

7 commits

Author SHA1 Message Date
Dmitry Safonov
9efd30b6a1 compel: define arch_is_machine_supported
Check if ELF header complements ELF magic in per-arch way.

Cc: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Dmitry Safonov <dsafonov@virtuozzo.com>
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>
2017-03-14 21:03:22 +03:00
Dmitry Safonov
392469b697 compel: add per-arch handle-elf.c
Split handle_elf() function from main.c to per-arch.
Rename it to handle_binary not to cross-reference.
Rename generic handle_elf to __handle_elf as with define
not to litter namespace.

Cc: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Dmitry Safonov <dsafonov@virtuozzo.com>
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>
2017-03-14 21:03:22 +03:00
Dmitry Safonov
427f68f0a3 compel: shuffle skeleton a bit
I propose to change compel directory structure:
- if we want support more arch's than x86/ppc66, it seems
  worth to add arch/ folder
- move all sources from src/ folder up
- to have headers and build additional object with CFLAGS for
  a symlink seems for me less hacky way than mess around
  with .c files cross-linking
- I made handle-elf.h header for arch helpers code. I may named
  that just "elf.h", but that may confuse, as there are <elf.h>
  system header
- I would like to drop those ELF_PPC64/ELF_X86_32/ELF_X86_64
  defines and use CONFIG_X86_64 and whatnot

After this patch compel directory become:
compel/
├── arch
│   ├── ppc64
│   │   └── include
│   │       └── handle-elf.h
│   └── x86
│       └── include
│           └── handle-elf.h
├── handle-elf-32.c -> handle-elf.c
├── handle-elf.c
├── include
│   ├── piegen.h
│   └── uapi
│       ├── elf32-types.h
│       ├── elf64-types.h
│       └── types.h
├── main.c
└── Makefile

Note: temporary I make value32 and addend32 for compilation on arm/aarch64

Cc: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Dmitry Safonov <dsafonov@virtuozzo.com>
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>
2017-03-14 21:03:22 +03:00
Cyrill Gorcunov
db88990665 compel: Add missing 32s support
https://github.com/xemul/criu/issues/148#issuecomment-211635122

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Reviewed-by: Dmitry Safonov <dsafonov@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>
2017-03-14 21:03:22 +03:00
Cyrill Gorcunov
ddcb61de13 compel: Don't reclose files already closed
In case of error don't re-close files already closed.

https://github.com/xemul/criu/issues/148

Reported-by: Andrew Vagin <avagin@virtuozzo.com>
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Reviewed-by: Andrey Vagin <avagin@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>
2017-03-14 21:03:22 +03:00
Cyrill Gorcunov
f2dd307be9 compel: Drop config.h from deps
We don't need it actually.

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Acked-by: Andrew Vagin <avagin@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>
2017-03-14 21:03:20 +03:00
Cyrill Gorcunov
acfa85ba5a compel: Initial commit for standalone tool
The compel component is a replacement for several aspects of CRIU
functionality: binary blobs generation for PIE parasite/restore code,
and a library for parasite code injection and execution (to be implemented).

In the commit we rather shuffle compel into own directory and
use it for

1) Fetching cflags when compiling PIE blobs
2) Use its "piegen" functionality to generate blobs themselves.

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>
2017-03-14 21:03:20 +03:00