Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

It contains info about the pipe itself, not jut one of its
ends. Thus if we want to add more (e.g. -- its size) we'll
have to put it there and thus have it always present.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

v2: fix descriptions
Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Currently fdinfo dumps for each task, so CR_FD_FDINFO is in cr_fdset.
A few tasks can share one fd table and the set of descriptors will be
dumped once and a image name will contain files_id instead of pid.
In this case CR_FD_FDINFO will go away from cr_fdset.
Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

crtools should not failed, if new images are absent.
Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

zdtm.sh -b <commit>
* save a current head, rollback on <commit> and compile crtools
* execute a test and dump its processes
* checkout the current head and comple crtools
* restore test processes and check results
Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

* Replaced the shell interpreter with bash to run
  the script test/zdtm.sh correctly.

* Added new directories into the routine contruct_root()
  searched by the Debian version of the dynamic linker.
Signed-off-by: Alexander Kartashov <alekskartashov@parallels.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Dump the with "new" prlimit syscall that works on arbitrary pid.

Restore is done in restorer _after_ mappings mixup and _before_
caps drop to make it set any max value.

The RLIM_INFINITY is handled explicitly to help future 64<->32
bits migration.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

On my FC17 box calloc calls brk() and the subsequent mprotect(PROT_EXEC)
fails with EACCESS. Using mmap is safer here.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

This one is bound to task's fs info (with cwd and root)
thus put it in the fs.img file.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

The number of arguments used to carry data via them is too
big already. Just fill the required core fields inside.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

And do "get real pid, report virtual one" inside.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

* The routine sigreturn_prep_xsave_frame() is renamed to sigreturn_prep_fpu_frame().

* Moved the routines sigreturn_prep_fpu_frame(), show_rt_xsave_frame(), and
  valid_xsave_frame() to the file crtools.c.

* Introduced the structure fpu_state_t to pass the FPU state to the restorer
  in a machine-independent way.
Signed-off-by: Alexander Kartashov <alekskartashov@parallels.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Leave them empty for x86, will be used on ARM.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

The current sys_mmap error analysis code doesn't work on 32-bit architectures
with 3G/1G userspace/kernel virtual address space split since the syscall
allocates anonymous memory above the first 2G of the address space ---
such an address is a negative integer so it's interpreted as a error code.
The problem isn't encountered on x86-64 becauase it doesn't use negative
virtual addresses in the userspace.

The 3G/1G split is used because memory allocation is currently broken for other
values of the split on ARM: the value of TASK_UNMAPPED_BASE (arch/arm/include/asm/memory.h)
isn't page-aligned if other split value is used so the value of the field
mm_struct::mmap_base is initialized with a page-unaligned value by
the function arch_pick_mmap_layout() (arch/arm/mm/mmap.c) in some circumstances
that breaks page-alignment checks in the kernel memory management code.

This patch modifies sys_mmap return value analysis code replacing tests
for negativeness of the signed return value with tests that checks that
the return value isn't greater than TASK_SIZE.
Signed-off-by: Alexander Kartashov <alekskartashov@parallels.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Signed-off-by: Alexander Kartashov <alekskartashov@parallels.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

The size of an auxv is the machine pointer but a 64-bit integer is reserved
in a MmEntry protobuf message to store an auxv. Moreover the number of auxv's
varies from one architecture to another. So the following is proposed
to alleviate the issue.

* Introduced the type auxv_t representing a machine-pointer sized integer.

* The size of auxv array is extracted from a MmEntry message instead of using
  the value of the macro AT_VECTOR_SIZE.
Signed-off-by: Alexander Kartashov <alekskartashov@parallels.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Signed-off-by: Alexander Kartashov <alekskartashov@parallels.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

restorer: wrapped the assembly code executed on a rt_sigreturn failure into the macro ARCH_FAIL_CORE_RESTORE.
Signed-off-by: Alexander Kartashov <alekskartashov@parallels.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Signed-off-by: Alexander Kartashov <alekskartashov@parallels.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Signed-off-by: Alexander Kartashov <alekskartashov@parallels.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Signed-off-by: Alexander Kartashov <alekskartashov@parallels.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Signed-off-by: Alexander Kartashov <alekskartashov@parallels.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

include/restorer.h: moved machine-dependent sigframe structs to the file arch/x86/include/asm/restorer.h.
Signed-off-by: Alexander Kartashov <alekskartashov@parallels.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Signed-off-by: Alexander Kartashov <alekskartashov@parallels.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Signed-off-by: Alexander Kartashov <alekskartashov@parallels.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Signed-off-by: Alexander Kartashov <alekskartashov@parallels.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Signed-off-by: Alexander Kartashov <alekskartashov@parallels.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Signed-off-by: Alexander Kartashov <alekskartashov@parallels.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Signed-off-by: Alexander Kartashov <alekskartashov@parallels.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Signed-off-by: Alexander Kartashov <alekskartashov@parallels.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

VM above TASK_SIZE is read-only but some areas are mapped on ARM
into the process address space.
Signed-off-by: Alexander Kartashov <alekskartashov@parallels.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Signed-off-by: Alexander Kartashov <alekskartashov@parallels.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

* The linker script pie/pie.lds.S is generated from the template
  pie/pie.lds.S.in by prepending the output architecture specification.
  The output architecture is defined by the variable LDARCH.

* Blobs are generated by objcopy instead of ld because the ARM linker
  fails to produce a binary when supplied a script.
  (See http://lists.gnu.org/archive/html/bug-binutils/2008-10/msg00091.html).
Signed-off-by: Alexander Kartashov <alekskartashov@parallels.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

* The following files goes into the directory arch/x86/include/asm unmodified:
  - include/atomic.h,
  - include/linkage.h,
  - include/memcpy_64.h,
  - include/types.h,
  - include/bitops.h,
  - pie/parasite-head-x86-64.S,
  - include/processor-flags.h,
  - include/syscall-x86-64.def.

* Changed include directives in the source files that include the headers
  listed above.

* Modified build scripts to reflect the source moves.
Signed-off-by: Alexander Kartashov <alekskartashov@parallels.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Kernel started with 3.8-rc1 are not report non-existent caps in
/proc/pid/status, so crtools doesn't dump/restore such caps.
Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>