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289 Commits

Author SHA1 Message Date
Andrey Vagin
146735f933 Dump direcory descriptor as a file descriptor 
If I understand correct, they don't differ in linux.

Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
 2011-11-30 22:04:24 +04:00
Andrey Vagin
6949e0f09f Dump memory character devices as a file. 
It's work for /dev/zero, /dev/null and other simple devices.

Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
 2011-11-30 22:04:16 +04:00
Andrey Vagin
7553620298 Dump SigBlk instead of SigCgt 
It's because this mask will be restored as rt_sigframe->uc.uc_sigmask.
uc_sigmask will be set as current->blocked in sigreturn, so we should
dump SigBlk in this case.

Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
 2011-11-30 22:04:12 +04:00
Andrey Vagin
25434884e1 Dump and restore sigactions (v2) 
A parasite code dumps all sigactions in sigact.pid.

v2: remove hard code for sizeof(sigset_t)

Signed-off-by: Andrey Vagin <avagin@openvz.org>
Acked-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
 2011-11-30 22:04:09 +04:00
Andrey Vagin
bc1f9d728a Skip a standard destriptor only if it's tty (v2) 
ZDTM tests redirect standart descriptors to /dev/null

v2: * Skip tty only if it's a standard descriptor.
    * No strcmps on names.

Signed-off-by: Andrey Vagin <avagin@openvz.org>
Acked-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
 2011-11-30 22:04:00 +04:00
Cyrill Gorcunov
122cae2111 dump: Add -k (kill dumped) option 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-22 22:09:28 +04:00
Cyrill Gorcunov
0fd17a08cb Bring some order in usage of VMA entries helpers 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-15 17:12:29 +04:00
Cyrill Gorcunov
bb15450d98 image: Drop tls_array from the image 
We use registers set anyway

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-15 14:57:39 +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
ba63496330 dump: Update comment 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-14 17:22:17 +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
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
da8f61c1c8 dump: Add GS-TLS handling 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-11-07 17:44:00 +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
2cc7488de2 dump: Make VMA parsing to handle absence of map_files 
Needed in testing purposes. Also make free_mappings
being a global one (will need it in restorer).

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-26 22:48:10 +04:00
Cyrill Gorcunov
20ff379ee4 dump: Append threads to the core file 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-24 23:01:42 +04:00
Cyrill Gorcunov
26857cc4e5 util: Move various helpers there 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-24 13:43:21 +04:00
Cyrill Gorcunov
c475bccd53 dump: Use memzero_p 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-24 11:27:28 +04:00
Cyrill Gorcunov
2dc583092c dump: Don't forget to close fds 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-23 12:43:52 +04:00
Cyrill Gorcunov
af647ce009 dump: Dump threads params as well 
We only need registers at the moment

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-23 12:43:52 +04:00
Cyrill Gorcunov
611debc312 dump: Add parsing of thread pids 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-23 12:43:15 +04:00
Cyrill Gorcunov
b001849a00 dump: Get rid of global vma_area_list 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>

Conflicts:

	cr-dump.c

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-23 12:29:36 +04:00
Cyrill Gorcunov
c60f01b944 dump: Get rid of global pstree_list 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-23 12:02:27 +04:00
Cyrill Gorcunov
c2bd177330 dump: Add comments on task seizing and stopping 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-13 18:57:13 +04:00
Cyrill Gorcunov
9b6708e3a3 dump: Don't poke cr fdset with open/close needlessly 
Reported-by: Pavel Emelyanov xemul@parallels.com
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-13 16:18:32 +04:00
Pavel Emelyanov
1f14766919 Generalize file opening 
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-12 18:34:15 +04:00
Pavel Emelyanov
5a397e8a59 Rework fdinfo readinf to use FILE * 
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-12 18:30:04 +04:00
Cyrill Gorcunov
4389c021fc dump, kernel: Add some mm structure members into the dump 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-12 18:05:07 +04:00
Cyrill Gorcunov
ce65f2f718 dump, kernel: Add start/end_code data 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-12 16:02:36 +04:00
Cyrill Gorcunov
f7e6e63b44 kernel, dump: Obtain brk value 
Also re-make image to be 2 pages in size
which should be enough for basic params we
need to restore tasks.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-12 09:40:02 +04:00
Cyrill Gorcunov
4b7a318322 dump: Prepare for new core_entry layout 
core_entry layout is arch dependant.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-11 01:32:39 +04:00
Cyrill Gorcunov
99466eb328 dump: Add dumping a tasks's flags 
We need it to figure out if FPU was used
so that we need to restore context later.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-10 17:05:12 +04:00
Cyrill Gorcunov
2efb66d69a dump: Sanitize dumping message 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-06 14:07:48 +04:00
Cyrill Gorcunov
2f3c929aff dump: Add should_ignore_fd helper 
We should ignore tty devices for a while.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-04 14:07:07 +04:00
Cyrill Gorcunov
609e431376 Add cr_options structure 
We will need more options since the
tool should support both cgroups freezer
and a regular task stop/dump/restore/continue
transition.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-04 01:50:19 +04:00
Cyrill Gorcunov
8f0af4f8a6 Restore task's command line as well 
Note binary format for core file is changed.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-10-01 13:24:34 +04:00
Cyrill Gorcunov
a00ef142f8 Use pr_err for error printing 
To follow kernel style

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-09-30 14:37:12 +04:00
Cyrill Gorcunov
523de23624 Initial commit 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
 2011-09-23 12:00:45 +04:00