1000     22971  0.0  0.0  21028  3580 pts/0    Ss   16:15   0:00  |       \_ -bash
root     25139  0.0  0.0  37160  1344 pts/0    S    16:22   0:00  |           \_ su -
root     25152  0.0  0.0  19540  2080 pts/0    S    16:22   0:00  |               \_ -su
root     28556  0.0  0.0  18624   956 pts/0    S+   16:31   0:00  |                   \_ vzctl enter 9001
root     28557  0.0  0.0  18624   624 ?        Ss   16:31   0:00  |                       \_ vzctl: pts/0    
root     28558  0.0  0.0  17780  1928 /vz/root/9001/dev/pts/0 Ss+ 16:31   0:00  |     \_ -bash

[pid 28981] rt_sigaction(SIGRT_30, {SIG_DFL, [], SA_RESTORER, 0x7f739d5921e0}, NULL, 8) = 0
[pid 28981] rt_sigaction(SIGRT_31, {SIG_DFL, [], SA_RESTORER, 0x7f739d5921e0}, NULL, 8) = 0
[pid 28981] rt_sigaction(SIGRT_32, {SIG_DFL, [], SA_RESTORER, 0x7f739d5921e0}, NULL, 8) = 0
[pid 28981] rt_sigaction(65, {SIG_DFL, [], SA_RESTORER, 0x7f739d5921e0}, NULL, 8) = -1 EINVAL (Invalid argument)
[pid 28981] ioctl(4, 0x400c2e05, 0x7fff4dec2090) = 9001
[pid 28981] setgroups(0, [])            = 0
[pid 28981] stat("/sbin/init", {st_mode=S_IFREG|0755, st_size=37000, ...}) = 0
[pid 28981] open("/sbin/init", O_RDONLY) = 5
[pid 28981] read(5, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\2\0>\0", 20) = 20
[pid 28981] close(5)                    = 0
[pid 28981] close(4)                    = 0
[pid 28981] open("/dev/ptmx", O_RDWR)   = 4
[pid 28981] statfs("/dev/pts", {f_type="DEVPTS_SUPER_MAGIC", f_bsize=4096, f_blocks=0, f_bfree=0, f_bavail=0, f_files=0, f_ffree=0, f_fsid={0, 0}, f_namelen=255, f_frsize=4096}) = 0
[pid 28981] ioctl(4, SNDCTL_TMR_TIMEBASE or TCGETS, {B38400 opost isig icanon echo ...}) = 0
[pid 28981] ioctl(4, TIOCGPTN, [0])     = 0
[pid 28981] stat("/dev/pts/0", {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 0), ...}) = 0
[pid 28981] stat("/dev/pts/0", {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 0), ...}) = 0
[pid 28981] getuid()                    = 0
[pid 28981] open("/etc/group", O_RDONLY|O_CLOEXEC) = 5
[pid 28981] lseek(5, 0, SEEK_CUR)       = 0
[pid 28981] fstat(5, {st_mode=S_IFREG|0644, st_size=525, ...}) = 0
[pid 28981] mmap(NULL, 525, PROT_READ, MAP_SHARED, 5, 0) = 0x7f739e10a000
[pid 28981] lseek(5, 525, SEEK_SET)     = 525
[pid 28981] munmap(0x7f739e10a000, 525) = 0
[pid 28981] close(5)                    = 0
[pid 28981] ioctl(4, TIOCSPTLCK, [0])   = 0
[pid 28981] ioctl(4, SNDCTL_TMR_TIMEBASE or TCGETS, {B38400 opost isig icanon echo ...}) = 0
[pid 28981] ioctl(4, TIOCGPTN, [0])     = 0
[pid 28981] stat("/dev/pts/0", {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 0), ...}) = 0
[pid 28981] open("/dev/pts/0", O_RDWR|O_NOCTTY) = 5
[pid 28981] ioctl(5, SNDCTL_TMR_TIMEBASE or TCGETS, {B38400 opost isig icanon echo ...}) = 0
[pid 28981] ioctl(5, SNDCTL_TMR_CONTINUE or TCSETSF, {B38400 opost isig icanon echo ...}) = 0
[pid 28981] ioctl(5, SNDCTL_TMR_TIMEBASE or TCGETS, {B38400 opost isig icanon echo ...}) = 0
[pid 28981] ioctl(5, TIOCSWINSZ, {ws_row=62, ws_col=237, ws_xpixel=0, ws_ypixel=0}) = 0
[pid 28981] ioctl(5, SNDCTL_TMR_TIMEBASE or TCGETS, {B38400 opost isig icanon echo ...}) = 0
[pid 28981] readlink("/proc/self/fd/5", "/dev/pts/0", 4095) = 10
[pid 28981] ioctl(5, SNDCTL_TMR_TIMEBASE or TCGETS, {B38400 opost isig icanon echo ...}) = 0
[pid 28981] readlink("/proc/self/fd/5", "/dev/pts/0", 4095) = 10
[pid 28981] rt_sigaction(SIGCHLD, {0x402ce0, [], SA_RESTORER|SA_NOCLDSTOP, 0x7f739d5921e0}, NULL, 8) = 0
[pid 28981] clone(Process 1052 attached
child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f739e1049d0) = 1052
Process 28982 attached (waiting for parent)
[pid 28981] close(5)                    = 0
[pid 28981] close(9)                    = 0
[pid 28981] fcntl(3, F_GETFL)           = 0 (flags O_RDONLY)
[pid 28981] fcntl(3, F_SETFL, O_RDONLY|O_NONBLOCK) = 0
[pid 28981] fcntl(4, F_GETFL)           = 0x8002 (flags O_RDWR|O_LARGEFILE)
[pid 28981] fcntl(4, F_SETFL, O_RDWR|O_NONBLOCK|O_LARGEFILE) = 0
[pid 28981] select(1024, [3 4 10], NULL, NULL, NULL