- 29 Mar, 2012 5 commits
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Cyrill Gorcunov authored
We will need these helpers to transfer file descriptors from dumpee to our space. Also make send_fd/recv_fd to be a wrappers over send_fds/revc_fds to not duplicate the code. Signed-off-by:
Cyrill Gorcunov <gorcunov@openvz.org> Signed-off-by:
Pavel Emelyanov <xemul@parallels.com>
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Cyrill Gorcunov authored
To be able to use scm_fdset structure the two helpers added scm_fdset_init_chunk and scm_fdset_init. Signed-off-by:
Cyrill Gorcunov <gorcunov@openvz.org> Signed-off-by:
Pavel Emelyanov <xemul@parallels.com>
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Cyrill Gorcunov authored
This structure will serve for multiple fds transmission/receive. Signed-off-by:
Cyrill Gorcunov <gorcunov@openvz.org> Signed-off-by:
Pavel Emelyanov <xemul@parallels.com>
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Cyrill Gorcunov authored
We will need them in file descriptors transfer addressed in further patches. Signed-off-by:
Cyrill Gorcunov <gorcunov@openvz.org> Signed-off-by:
Pavel Emelyanov <xemul@parallels.com>
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Cyrill Gorcunov authored
We will need it in parasite code where we can't use libc functions. Signed-off-by:
Cyrill Gorcunov <gorcunov@openvz.org> Signed-off-by:
Pavel Emelyanov <xemul@parallels.com>
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- 28 Mar, 2012 1 commit
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Cyrill Gorcunov authored
It's unused and wrong. Signed-off-by:
Cyrill Gorcunov <gorcunov@openvz.org> Signed-off-by:
Pavel Emelyanov <xemul@parallels.com>
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- 27 Mar, 2012 14 commits
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Pavel Emelyanov authored
Signed-off-by:
Pavel Emelyanov <xemul@parallels.com>
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Pavel Emelyanov authored
This is not good to update images while restoring. Thus, read vma_entry-es once into a list, put opened (when required) fds in there and make restorer walk the entries in mem, not those read from the image file. Signed-off-by:
Pavel Emelyanov <xemul@parallels.com>
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Pavel Emelyanov authored
Signed-off-by:
Pavel Emelyanov <xemul@parallels.com>
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Pavel Emelyanov authored
These chunks of memry, which transit into restorer code gets unmapped one-by-one and thus each of them should be page-aligned. Signed-off-by:
Pavel Emelyanov <xemul@parallels.com>
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Pavel Emelyanov authored
Signed-off-by:
Pavel Emelyanov <xemul@parallels.com>
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Pavel Emelyanov authored
There's no need in seeking file on core dump. Fix explicit sizeof(u32)-s in restore seeks. Signed-off-by:
Pavel Emelyanov <xemul@parallels.com>
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Pavel Emelyanov authored
IOW, show family, type, state and proto as strings, not bare numbers. Signed-off-by:
Pavel Emelyanov <xemul@parallels.com>
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Pavel Emelyanov authored
Now every inetsk fd dump results in a new entry in the fdinfo.img file. Sockets itself are dumped into inetsk.img global image file. On restore the generic fdinfo redistribution algo is used and inet sockets are opened only when required. Signed-off-by:
Pavel Emelyanov <xemul@parallels.com>
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Pavel Emelyanov authored
Currently only type is taken into account, but further we will need to distinguish types as well. Signed-off-by:
Pavel Emelyanov <xemul@parallels.com>
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Pavel Emelyanov authored
Signed-off-by:
Pavel Emelyanov <xemul@parallels.com>
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Pavel Emelyanov authored
Each fdset item now has the callback which will show a contents of a magic-described image file. Per-task and global show code is reworked to walk the respective fdsets and calling ->show on each file. Signed-off-by:
Pavel Emelyanov <xemul@parallels.com>
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Cyrill Gorcunov authored
To be consistent. Mutexes are futex based but have own semantics so better to be able to distinguish the types. Signed-off-by:
Cyrill Gorcunov <gorcunov@openvz.org> Acked-by:
Andrey Vagin <avagin@parallels.com> Signed-off-by:
Pavel Emelyanov <xemul@parallels.com>
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Cyrill Gorcunov authored
Instead of open-coded u32 variables poking lets use futex_t type and appropriate helpers where needed. This should increase readability. Signed-off-by:
Cyrill Gorcunov <gorcunov@openvz.org> Acked-by:
Andrey Vagin <avagin@parallels.com> Signed-off-by:
Pavel Emelyanov <xemul@parallels.com>
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Pavel Emelyanov authored
After we removed the pid from pstree image file the -t or -p option for show command no longer makes sense. Make 'show' mode rely on -D option to find out where to find the root (i.e. pstree.img) file. Signed-off-by:
Pavel Emelyanov <xemul@parallels.com>
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- 26 Mar, 2012 15 commits
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Pavel Emelyanov authored
Signed-off-by:
Pavel Emelyanov <xemul@parallels.com>
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Pavel Emelyanov authored
This contains reg-files and sk-queues images, as they contain data which is potentially generated by every task, so keep it open all the time dump goes. Signed-off-by:
Pavel Emelyanov <xemul@parallels.com>
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Pavel Emelyanov authored
Current fdsets are ugly, limited (bitmask will exhaust in several months) and suffer from unknown problems with fdsets reuse :( With new approach (this set) the images management is simple. The basic function is open_image, which gives you an fd for an image. If you want to pre-open several images at once instead of calling open_image every single time, you can use the new fdsets. Images CR_FD_ descriptors should be grouped like _CR_FD_FOO_FROM, CR_FD_FOO_ITEM1, CR_FD_FOO_ITEM2, .. CR_FD_FOO_ITEMN, _CR_FD_FOO_TO, After this you can call cr_fd_open() specifying ranges -- _FROM and _TO macros, it will give you an cr_fdset object. Then the fdset_fd(set, type) will give you the descriptor of the open "set" group corresponding to the "type" type. 3 groups are introduced in this set -- tasks, ns and global. That's it. Signed-off-by:
Pavel Emelyanov <xemul@parallels.com>
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Pavel Emelyanov authored
Move pstree and sk-queues below, they are not per-task/-ns and will be global soon. Signed-off-by:
Pavel Emelyanov <xemul@parallels.com>
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Pavel Emelyanov authored
Write two helpers for opening an fdset for task and one for ns. This probably can be done with some "generic" macro(s), but this time it's simpler not to produce more code of that type. Signed-off-by:
Pavel Emelyanov <xemul@parallels.com>
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Pavel Emelyanov authored
This patch does s/$fdset->fds[$nr]/fdset_fd($fdset, $nr)/ over the code. Signed-off-by:
Pavel Emelyanov <xemul@parallels.com>
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Pavel Emelyanov authored
Just use the open_image_ro for this. Signed-off-by:
Pavel Emelyanov <xemul@parallels.com>
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Pavel Emelyanov authored
It's not required any longer. Now fdsets are allocated one-by-one only when required and there's no need in adding new fds to existing sets. Thus just remove the last arg from cr_fdset_open. Signed-off-by:
Pavel Emelyanov <xemul@parallels.com>
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Pavel Emelyanov authored
Move the fdset allocation inside dump_one_task and do it only for non-zombies. This makes sure we don't need to re-use an fdset, since we do allocate it only when required. Signed-off-by:
Pavel Emelyanov <xemul@parallels.com>
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Pavel Emelyanov authored
This fd is global, so make it such. It will stop being just a global variable soon. Plus, remove the pid arg from format. Signed-off-by:
Pavel Emelyanov <xemul@parallels.com>
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Pavel Emelyanov authored
Don't allocate fdset to show sk queues and don't fail on pstree fd opening :) Signed-off-by:
Pavel Emelyanov <xemul@parallels.com>
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Pavel Emelyanov authored
This routine is used for dumping tasks, threads and zombies. For the last two the whole fdset is not allocated thus it will be better to use single fd in this case. Signed-off-by:
Pavel Emelyanov <xemul@parallels.com>
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Pavel Emelyanov authored
It doesn't need the whole fdset actually. Plus, this makes new fdset implementation simpler. Signed-off-by:
Pavel Emelyanov <xemul@parallels.com>
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Stanislav Kinsbursky authored
Pid number is redundant - this file is one for the whole tree. Signed-off-by:
Stanislav Kinsbursky <skinsbursky@openvz.org> Signed-off-by:
Pavel Emelyanov <xemul@parallels.com>
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Stanislav Kinsbursky authored
Signed-off-by:
Stanislav Kinsbursky <skinsbursky@openvz.org> Signed-off-by:
Pavel Emelyanov <xemul@parallels.com>
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- 25 Mar, 2012 5 commits
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Pavel Emelyanov authored
Signed-off-by:
Pavel Emelyanov <xemul@parallels.com>
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Pavel Emelyanov authored
This makes the code look cleaner and prepares the ground for better fmaps dumping Signed-off-by:
Pavel Emelyanov <xemul@parallels.com>
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Pavel Emelyanov authored
Since now on the fdinfo image only contains plain fdinfo_entry-es. The tpye == FDINFO_REG files are described by regfiles.img entries and are matched by te ID in both. At dump stage each new ID generated results in a new entry in the regfiles.img. At restore stage open_fe_fd should open a regfile by the fdinfo's ID. Now this is done in suboptimal way, need to improve. Show shows both images separately. Signed-off-by:
Pavel Emelyanov <xemul@parallels.com>
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Pavel Emelyanov authored
Signed-off-by:
Pavel Emelyanov <xemul@parallels.com>
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Pavel Emelyanov authored
No colon at the end and handle empty ... set properly. Signed-off-by:
Pavel Emelyanov <xemul@parallels.com>
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