- 14 Jan, 2013 1 commit
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Alexander Kartashov authored
Signed-off-by:
Alexander Kartashov <alekskartashov@parallels.com> Signed-off-by:
Pavel Emelyanov <xemul@parallels.com>
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- 11 Jan, 2013 18 commits
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Andrey Vagin authored
Signed-off-by:
Andrey Vagin <avagin@openvz.org> Signed-off-by:
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Andrey Vagin authored
Currenly crtools supports a case when a child shared a fd table with parent. Here is only two interesting things. * Service descriptors should be cloned for each process who shared one fd table. * One task should restore files and other tasks should sleep in this * time. v2: * allocate fdt_lock from shared memory * don't wait a child, if it doesn't share fdtable v3: * don't move ids on the pstree image v4: * save ids in a separate image * save fdinfo per id instead of pid v5: fix alignment of service_fd_id Signed-off-by: -
Andrey Vagin authored
A few processes can share one fdtable. Signed-off-by:
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Andrey Vagin authored
A few processes can share one fd table. Each process has own set of service file descriptors and a process knows nothing about servic fds of another processes. So if two process share one fd table, close_old_fds will close servic descriptors of another process. Signed-off-by:
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Andrey Vagin authored
fdt shared data contains PID of process, which will restore file descriptors and a futex for synchronization. A process with mimimal pid restores file descriptors. Signed-off-by:
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Andrey Vagin authored
It will be used for determing which resources are shared Signed-off-by:
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Andrey Vagin authored
It is read together with pstree items for checking what kind of resources should be shared. Core is too big for reading it in this place. v2: fix check_core Signed-off-by:
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Andrey Vagin authored
A service fd should be created, otherwise get_service_fd returns -1. This patch removes this functionality from other subsystems and allows to clone service descriptors. v2: rename open_service_fd to install_service_fd v3: two patches were merged for bisecting Signed-off-by:
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Andrey Vagin authored
It looks like a namespace for service descriptors. It will be used for restoring tasks with shared fd tables. Service descriptors should be own for each process. v2: clone_service_fd doesn't know about sub-systems like log, proc, etc v3: Don't try to find a free name-space. Signed-off-by:
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Andrey Vagin authored
Because /proc could not be umounted, if any its file is opened. Signed-off-by:
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Pavel Emelyanov authored
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Pavel Emelyanov authored
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: -
Andrey Vagin authored
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Andrey Vagin authored
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Andrey Vagin authored
v2: fix descriptions Signed-off-by:
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Andrey Vagin authored
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:
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Andrey Vagin authored
crtools should not failed, if new images are absent. Signed-off-by:
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Andrey Vagin authored
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:
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- 10 Jan, 2013 6 commits
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Alexander Kartashov authored
* 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:
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Pavel Emelyanov authored
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Pavel Emelyanov authored
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 authored
On my FC17 box calloc calls brk() and the subsequent mprotect(PROT_EXEC) fails with EACCESS. Using mmap is safer here. Signed-off-by: -
Andrey Vagin authored
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Pavel Emelyanov authored
This one is bound to task's fs info (with cwd and root) thus put it in the fs.img file. Signed-off-by:
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- 09 Jan, 2013 15 commits
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Pavel Emelyanov authored
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 authored
And do "get real pid, report virtual one" inside. Signed-off-by: -
Alexander Kartashov authored
* 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:
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Alexander Kartashov authored
Leave them empty for x86, will be used on ARM. Signed-off-by: -
Alexander Kartashov authored
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:
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Alexander Kartashov authored
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Alexander Kartashov authored
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:
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Alexander Kartashov authored
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Alexander Kartashov authored
restorer: wrapped the assembly code executed on a rt_sigreturn failure into the macro ARCH_FAIL_CORE_RESTORE. Signed-off-by:
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Alexander Kartashov authored
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Alexander Kartashov authored
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Alexander Kartashov authored
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Alexander Kartashov authored
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Alexander Kartashov authored
include/restorer.h: moved machine-dependent sigframe structs to the file arch/x86/include/asm/restorer.h. Signed-off-by:
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Alexander Kartashov authored
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