Changes

| crtools || Shared objects (mm/fs) support || medium || - || Things created with CLONE_FOO flags are not supported now (exception -- full threads). Now we have the kcmp syscall and can do it. The shared fdtable (CLONE_FILES) is supported, the next candidate is mm sharing, as we do know, that MySQL does so sometimes.

| crtools || Shared objects (mm/fs) support || medium || - || Things created with CLONE_FOO flags are not supported now (exception -- full threads). Now we have the kcmp syscall and can do it. The shared fdtable (CLONE_FILES) is supported, the next candidate is mm sharing, as we do know, that MySQL does so sometimes.

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| crtools || Smart paths resolution || hard || - || Files can be overmounted. In this case CRIU will refuse the dump saying that file is not [[alive|invisible files]] but inaccessible by its name. Need a way to resolve paths to such. There are two ways: 1. Move mounts, that overlap the desired path temporarily, then open the file, then move the mountpoint back. 2. When creating a new mount pre-open an fd keeping the mountpoint. Later, do accurate path resolve and call openat() on proper mountpoint fd.

| crtools || Smart paths resolution || hard || - || Files can be overmounted. In this case CRIU will refuse the dump saying that file is [[invisible files|not alive]] but inaccessible by its name. Need a way to resolve paths to such. There are two ways: 1. Move mounts, that overlap the desired path temporarily, then open the file, then move the mountpoint back. 2. When creating a new mount pre-open an fd keeping the mountpoint. Later, do accurate path resolve and call openat() on proper mountpoint fd.

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| kernel/crtools || [[TCP repair TODO|TCP repair fixes]] || hard || - || We can dump and restore live [[TCP connection]]. There are some issues with it, that should be fixed.

| kernel/crtools || [[TCP repair TODO|TCP repair fixes]] || hard || - || We can dump and restore live [[TCP connection]]. There are some issues with it, that should be fixed.