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Author SHA1 Message Date
Cyrill Gorcunov
f89f67914e dump: parasite -- Drop unneeded sections 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-15 12:21:17 +04:00
Cyrill Gorcunov
72d3d2326a dump: Drop parasite_complete_ip from parasite_ctl 
It was used for debug only to be able to work without
task seizing. Not needed anymore.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-15 12:15:08 +04:00
Cyrill Gorcunov
417fe5d8e1 image: Drop redundant VMA_FORCE_WRITE 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-15 11:57:24 +04:00
Cyrill Gorcunov
2c0e5db7eb image: Drop redundant offsetof 
Already in compiler.h

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-15 11:54:01 +04:00
Cyrill Gorcunov
54b1455e8a util: Move maps buffer into routine stack 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-15 11:34:11 +04:00
Cyrill Gorcunov
dd4d829d61 util: Add error messages into files/dirs open helper 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-15 11:29:33 +04:00
Cyrill Gorcunov
1c5f981e51 cleanup: dump -- Add warning on unexpected VMA 
Instead of simply dropping this dead code, put
a warning here, just to be on a safe side.

Reported-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-14 18:51:36 +04:00
Cyrill Gorcunov
5ae9d9feb8 cleanup: parasite - Drop PARASITE_CMD_RESTORECORE 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-14 18:50:20 +04:00
Cyrill Gorcunov
ce40f5d96f restore: Fix restoration of anonymous shared vmas 
And rename prepare_and_execute_image to
prepare_and_sigreturn which is more appropriate
name here.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-14 17:23:23 +04:00
Cyrill Gorcunov
ba63496330 dump: Update comment 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-14 17:22:17 +04:00
Cyrill Gorcunov
321793cd37 test: Add pipes output into testee 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-14 17:20:21 +04:00
Cyrill Gorcunov
c9c2bddcb8 test: Update shared mem test 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-14 17:19:41 +04:00
Cyrill Gorcunov
6a26e75aba cleanup: Drop elf references 
We dont use Elf restore anymore, drop it.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-13 13:07:00 +04:00
Cyrill Gorcunov
e793eb7557 cleanup: Drop unneeded sources 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-13 13:00:32 +04:00
Cyrill Gorcunov
3e72543422 restore: Handle process tree correctly 
pstree file is a single one for all processes and
threads so skip non-matched entries correctly.

This brings testee test back to life.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-13 12:57:16 +04:00
Cyrill Gorcunov
1e7bbd35de restore: Add threads restoration 
Now threads restortion (and TLS as well) works.
Threads test reports the following

    2775 (main): Counter value:    3 tls_data =    1
    2775 (main): ( 0) fsgs_base 7f9597aa46f0
    2775 (main): ( 0) fsgs_base        0
    2775 (thr3): Counter value:    4 tls_data =    4
    2775 (thr3): ( 0) fsgs_base 42c57940
    2775 (thr3): ( 0) fsgs_base        0
    2775 (thr2): Counter value:    3 tls_data =    2
    2775 (thr2): ( 0) fsgs_base 42456940
    2775 (thr2): ( 0) fsgs_base        0
    2775 (thr1): Counter value:    4 tls_data =    3
    2775 (thr1): ( 0) fsgs_base 40c62940
    2775 (thr1): ( 0) fsgs_base        0
    2775 (main): Counter value:    4 tls_data =    1
    2775 (main): ( 0) fsgs_base 7f9597aa46f0
    2775 (main): ( 0) fsgs_base        0
    2775 (thr1): Counter value:    5 tls_data =    3
    2775 (thr1): ( 0) fsgs_base 40c62940
    2775 (thr1): ( 0) fsgs_base        0

as expected.

This commits merges all preliminary commits into
the final one (sigreturn branch was always experimental
and forced update).

Still some problems remain:

1) While creating threads with clone() the
   flags are to be revisited. We use some predefined
   set here but it's not really correct.

2) No setup of pids in PCB thread zone.

3) No restore of FPU.

But at least on some basic tasks restore works well.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-12 19:26:40 +04:00
Cyrill Gorcunov
db2064811d dump: Add missing newline in error message 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-09 13:00:12 +04:00
Cyrill Gorcunov
0a26593a3b dump, restore: Add blocked signals mask 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-09 00:29:41 +04:00
Cyrill Gorcunov
73e64bec27 restorer: Setup task data via prctl 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-08 18:25:02 +04:00
Cyrill Gorcunov
566a900e4e restore: Use prctl for vDSO restoration 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-08 17:53:47 +04:00
Cyrill Gorcunov
a4d37dcf67 kernel: Add patches needed 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-08 17:53:17 +04:00
Cyrill Gorcunov
76df6d9ed5 syscalls: Add sys_prctl helper 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-08 16:39:21 +04:00
Cyrill Gorcunov
b50ee4a175 Update kernel area 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-08 15:16:06 +04:00
Cyrill Gorcunov
83c209ef07 Move vma prot setup into parsing helper 
To shrink restorer code.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-08 13:54:01 +04:00
Cyrill Gorcunov
35502c4564 restore: Add PROT_GROWSDOWN for stack area 
Since we stick with x86 for a while.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-08 13:48:10 +04:00
Cyrill Gorcunov
0355f1d23a dump: Don't fail on dumping paths for anon shared mappings 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-08 13:25:15 +04:00
Cyrill Gorcunov
c07a4b2caa restore: Don't forget to close file descriptors on VMAs 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-08 12:20:28 +04:00
Cyrill Gorcunov
b9d0883d76 dump: Anonymous shared mappings should have MAP_ANONYMOUS flag 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-08 12:19:43 +04:00
Cyrill Gorcunov
20c3bf1033 restore: 32k of stack memory is enough 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-08 01:44:40 +04:00
Cyrill Gorcunov
099c9c0016 dump: Don't forget to save MAP_ANONYMOUS if it was there 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-08 00:39:21 +04:00
Cyrill Gorcunov
275e97c77d restore: Increase the stack size for cloned processes 
Wasted a couple of hours trying to resolve this non-obvious
issue. It's because bootstrapping the restorer code might
requre more memory than 16K on stack. Strictly speaking
we need a compile time constant here and BUG_ON.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-07 22:58:18 +04:00
Cyrill Gorcunov
b78c664bca restore: Fixup pstree reading 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-07 20:18:38 +04:00
Cyrill Gorcunov
3b7a4cbe09 restorer: Start using sigreturn_restore 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-07 19:14:28 +04:00
Cyrill Gorcunov
7e481f89f9 restore: Add GS-TLS handling 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-07 17:44:24 +04:00
Cyrill Gorcunov
da8f61c1c8 dump: Add GS-TLS handling 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-07 17:44:00 +04:00
Cyrill Gorcunov
1f7018a15c restore: Update fsindex and fs base in sake of TLS 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-07 17:34:59 +04:00
Cyrill Gorcunov
8a8850d146 dump: Dump TLS via sys_arch_prctl 
As such -- no need for kernel patch.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-07 16:29:36 +04:00
Cyrill Gorcunov
3725fd326d syscalls: Add sys_arch_prctl helper 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-07 15:24:07 +04:00
Cyrill Gorcunov
d6e7afe3d8 syscalls: Add sys_set/get_thread_area helpers 
They are actually banned in kernel for now, but
we might end up needing them, so better to have
them in-place.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-07 14:47:04 +04:00
Cyrill Gorcunov
cb7a9a524d restore: Add restorer bootstrap mmap hint 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-06 01:49:57 +04:00
Cyrill Gorcunov
b69aeb9a26 restore: Don't continue on opening vmas file failure 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-05 01:39:21 +04:00
Cyrill Gorcunov
34c72fc9f6 restore: Add some more debug printing 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-04 18:45:47 +04:00
Cyrill Gorcunov
bf30aa1130 restore: Drop unused struct partial_pt_regs 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-03 19:31:07 +04:00
Cyrill Gorcunov
2ae009ac1b restore: Don't forget to free temporary self VMAs 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-03 19:11:27 +04:00
Cyrill Gorcunov
9e5b145aff restore: Drop dead code, comments 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-03 18:24:23 +04:00
Cyrill Gorcunov
f63777d2be restorer: Setup rt_sigframe to a proper address 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-03 15:24:40 +04:00
Cyrill Gorcunov
345834ecee test: Add prints out in static test 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-03 15:24:08 +04:00
Cyrill Gorcunov
489745f235 restore: A number of fixups and debug printing 
An idea is to align restorer size to be sure it
wont be stripped in a middle of code.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-03 11:58:45 +04:00
Cyrill Gorcunov
ed3c4fbacf syscalls: Get rid of mnemonic names for registers 
Use explicit registers name instead just to be sure it
wont cause side effects on most gcc versions.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-03 11:55:29 +04:00
Cyrill Gorcunov
48371f729a test: Add static sleep test 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-31 20:37:50 +04:00