- 06 Dec, 2011 1 commit
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Andrey Vagin authored
Probably all of you know about "lock inversion". We have a similar problem on restoring pipes. This test case creates two process and two pipes. process 1: 11: pipe1 (w) 12: pipe2 (r) process 2: 11: pipe2 (r) 12: pipe1 (w) Signed-off-by:
Andrey Vagin <avagin@openvz.org> Signed-off-by:
Cyrill Gorcunov <gorcunov@openvz.org>
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- 05 Dec, 2011 8 commits
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Cyrill Gorcunov authored
There is no such file at all and it forced build process to re-build every make command passed. Reported-by:
Pavel Emelyanov <xemul@parallels.com> Signed-off-by:
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Cyrill Gorcunov authored
It's already in OBJS Signed-off-by: -
Cyrill Gorcunov authored
Added - ability to parse every single file crtools understands via magic number - dumped memory pages can be rendered in two modes -- as a simple set of pages' virtual addresses or in hexdummp fashion (via -c command line key). For example ./crtools -s -c -f pages-2557.img CR_FD_PAGES: pages-2557.img ---------------------------------------- 7fffb44ace20: 00 00 00 00 00 00 00 00 00 00 00 74 65 73 74 2f |. . . . . . . . . . . t e s t / | 7fffb44ace30: 74 65 73 74 2d 73 69 67 61 63 74 69 6f 6e 00 48 |t e s t - s i g a c t i o n . H | 7fffb44ace40: 4f 53 54 4e 41 4d 45 3d 6c 6f 63 61 6c 68 6f 73 |O S T N A M E = l o c a l h o s | 7fffb44ace50: 74 2e 6c 6f 63 61 6c 64 6f 6d 61 69 6e 00 54 45 |t . l o c a l d o m a i n . T E | Signed-off-by: -
Cyrill Gorcunov authored
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Cyrill Gorcunov authored
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Cyrill Gorcunov authored
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Andrey Vagin authored
The standard descriptors may be redirected. crtool dumplicates stderr in rlimit.maxfileno-1 and this descriptor is inherited by all children and will be closed before sigreturn. Known issues: - The logging descriptor may be used by a target process and a resume will fail. Signed-off-by:
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Andrey Vagin authored
Many programs use stdout for transferring data. v2: remove debug code Signed-off-by:
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- 03 Dec, 2011 1 commit
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Cyrill Gorcunov authored
Since we operate with syscalls directly we are to convert signal's structures between image and kernel formats, without intermediate glibc layer. Note this involves chaging sa_entry::flags to u64 (since it's long int value in kernel). Signed-off-by:
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- 02 Dec, 2011 14 commits
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Cyrill Gorcunov authored
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Cyrill Gorcunov authored
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Cyrill Gorcunov authored
It's needed to keep singnal handlers on disk with predefined format. Signed-off-by:
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Cyrill Gorcunov authored
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Pavel Emelyanov authored
After all the child/threads stuff is moved to helpers it is possible to remove some unneeded code paths and local variables. Signed-off-by:
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Pavel Emelyanov authored
Move all the parsing of /proc/pid/children into a helper to be symmetrical with the threads parsing. Error from xrealloc is ignored as well. Signed-off-by:
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Pavel Emelyanov authored
Move the whole code dealing with parsing threads at collect_pstree stage into one function. The nr_threads calculation is performed inside it based on the amount of directories in /proc/pid/task, not the Threads: count in status. Error from xrealloc is ignored by now. Signed-off-by:
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Andrey Vagin authored
If a task is sleep in syscall, it should be restared. This logic is moved from kernel do_signal(). Signed-off-by:
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Andrey Vagin authored
This test suite contains many small test cases for different subsystems. Example of execution: # make busyloop00.pid # ../../../../crtools -d -t `cat busyloop00.pid` # kill -9 `cat busyloop00.pid` # ../../../../crtools -r -t `cat busyloop00.pid` # cat busyloop00.out PASS Signed-off-by:
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Andrey Vagin authored
sigactions are restored before memory and if a parent get a signal which has a handler, it will get segmentation fault. This problem will disappear, when we add a freezer, because all processes will be resumed after restoring. Signed-off-by:
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Andrey Vagin authored
A file destriptor is opened for read-only and mmap with PROT_WRITE fails. We don't need PROT_WRITE for this case, because a file contains up to date data. lr-x------ 1 root root 64 Dec 1 19:10 20 -> /usr/lib64/gconv/gconv-modules.cache pos: 0 flags: 0100000 41155 mmap(0x7f2c3d6cf000, 28672, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_FIXED, 20, 0 <unfinished ...> 41155 <... mmap resumed> ) = -1 EACCES (Permission denied) Signed-off-by:
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Cyrill Gorcunov authored
v2: - Pavel reported there is no need to lock/unlock last-pid file in cycle, just lock it once before threads creation and unlock at the end. Signed-off-by:
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Cyrill Gorcunov authored
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Cyrill Gorcunov authored
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- 01 Dec, 2011 5 commits
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Cyrill Gorcunov authored
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Cyrill Gorcunov authored
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Cyrill Gorcunov authored
This also depends on kernel's inteface being changed, so kernel/ is updated as well. Signed-off-by:
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Andrey Vagin authored
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Cyrill Gorcunov authored
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- 30 Nov, 2011 11 commits
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Cyrill Gorcunov authored
The patch "sysctl: Add the kernel.ns_last_pid control" is not yet handled by crtools, still it's staged here to not loose it and collect all Acks in place. Signed-off-by: -
Cyrill Gorcunov authored
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Cyrill Gorcunov authored
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Cyrill Gorcunov authored
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Cyrill Gorcunov authored
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Cyrill Gorcunov authored
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Andrey Vagin authored
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Andrey Vagin authored
If I understand correct, they don't differ in linux. Signed-off-by:
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Andrey Vagin authored
pipe_loop00 passed with this patch. When we restore a regular fd (not pipe) we do use flags directly in open() call. Signed-off-by:
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Andrey Vagin authored
It's work for /dev/zero, /dev/null and other simple devices. Signed-off-by:
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Andrey Vagin authored
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:
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