terzo:~ # strace -p 1105
Process 1105 attached - interrupt to quit
select(1, [0], NULL, NULL, {26, 748000}) = 1 (in [0], left {24, 792000})
fcntl(0, F_GETFL)                       = 0x2 (flags O_RDWR)
fcntl(0, F_SETFL, O_RDWR|O_NONBLOCK)    = 0
accept(0, 0, NULL)                      = 1
pipe([2, 3])                            = 0
rt_sigprocmask(SIG_BLOCK, [USR1 USR2 TERM CHLD], NULL, 8) = 0
clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x2aabc3bc2b70) = 1876
close(1)                                = 0
close(3)                                = 0
rt_sigprocmask(SIG_UNBLOCK, [USR1 USR2 TERM CHLD], NULL, 8) = 0
fcntl(0, F_GETFL)                       = 0x802 (flags O_RDWR|O_NONBLOCK)
fcntl(0, F_SETFL, O_RDWR)               = 0
lstat("/etc/shutmsg", 0x7fffe736bb00)   = -1 ENOENT (No such file or directory)
select(3, [0 2], NULL, NULL, {30, 0})   = 1 (in [2], left {30, 0})
close(2)                                = 0
lstat("/etc/shutmsg", 0x7fffe736bb00)   = -1 ENOENT (No such file or directory)
select(1, [0], NULL, NULL, {30, 0})     = ? ERESTARTNOHAND (To be restarted)
--- SIGALRM (Alarm clock) @ 0 (0) ---
rt_sigaction(SIGALRM, {0x40b5a0, [], SA_RESTORER|SA_INTERRUPT, 0x2aabc39c1b20}, NULL, 8) = 0
rt_sigaction(SIGALRM, NULL, {0x40b5a0, [], SA_RESTORER|SA_INTERRUPT, 0x2aabc39c1b20}, 8) = 0
rt_sigaction(SIGALRM, {0x40b5a0, [], SA_RESTORER|SA_INTERRUPT, 0x2aabc39c1b20}, NULL, 8) = 0
alarm(30)                               = 0
rt_sigreturn(0x1e)                      = -1 EINTR (Interrupted system call)
alarm(0)                                = 30
rt_sigprocmask(SIG_BLOCK, [HUP INT QUIT BUS USR1 ALRM TERM CHLD IO], NULL, 8) = 0
setresuid(-1, 0, -1)                    = 0
setresgid(-1, 0, -1)                    = 0
rt_sigprocmask(SIG_UNBLOCK, [HUP INT QUIT BUS USR1 ALRM TERM CHLD IO], NULL, 8) = 0
open("/usr/local/var/proftpd/proftpd.scoreboard", O_RDWR) = 1
rt_sigprocmask(SIG_BLOCK, [HUP INT QUIT BUS USR1 ALRM TERM CHLD IO], NULL, 8) = 0
geteuid()                               = 0
setresgid(-1, 65534, -1)                = 0
setresuid(-1, 65534, -1)                = 0
rt_sigprocmask(SIG_UNBLOCK, [HUP INT QUIT BUS USR1 ALRM TERM CHLD IO], NULL, 8) = 0
fcntl(1, F_SETLKW, {type=F_WRLCK, whence=SEEK_SET, start=0, len=0}) = 0
lseek(1, 32, SEEK_SET)                  = 32
rt_sigprocmask(SIG_BLOCK, [HUP INT QUIT BUS USR1 ALRM TERM CHLD IO], NULL, 8) = 0
setresuid(-1, 0, -1)                    = 0
setresgid(-1, 0, -1)                    = 0
rt_sigprocmask(SIG_UNBLOCK, [HUP INT QUIT BUS USR1 ALRM TERM CHLD IO], NULL, 8) = 0
read(1, "T\7\0\0\376\377\0\0\376\377\0\0(none)\0\0\0\0\0\0\0\0\0"..., 504) = 504
kill(1876, SIG_0)                       = 0
lseek(1, 0, SEEK_CUR)                   = 536
read(1, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 504) = 504
lseek(1, 0, SEEK_CUR)                   = 1040
read(1, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 504) = 504
lseek(1, 0, SEEK_CUR)                   = 1544
read(1, "", 504)                        = 0
rt_sigprocmask(SIG_BLOCK, [HUP INT QUIT BUS USR1 ALRM TERM CHLD IO], NULL, 8) = 0
geteuid()                               = 0
setresgid(-1, 65534, -1)                = 0
setresuid(-1, 65534, -1)                = 0
rt_sigprocmask(SIG_UNBLOCK, [HUP INT QUIT BUS USR1 ALRM TERM CHLD IO], NULL, 8) = 0
fcntl(1, F_SETLK, {type=F_UNLCK, whence=SEEK_SET, start=0, len=0}) = 0
close(1)                                = 0
alarm(30)                               = 0
lstat("/etc/shutmsg", 0x7fffe736bb00)   = -1 ENOENT (No such file or directory)
select(1, [0], NULL, NULL, {30, 0})     = ? ERESTARTNOHAND (To be restarted)
--- SIGALRM (Alarm clock) @ 0 (0) ---
rt_sigaction(SIGALRM, {0x40b5a0, [], SA_RESTORER|SA_INTERRUPT, 0x2aabc39c1b20}, NULL, 8) = 0
rt_sigaction(SIGALRM, NULL, {0x40b5a0, [], SA_RESTORER|SA_INTERRUPT, 0x2aabc39c1b20}, 8) = 0
rt_sigaction(SIGALRM, {0x40b5a0, [], SA_RESTORER|SA_INTERRUPT, 0x2aabc39c1b20}, NULL, 8) = 0
alarm(30)                               = 0
rt_sigreturn(0x1e)                      = -1 EINTR (Interrupted system call)
alarm(0)                                = 30
rt_sigprocmask(SIG_BLOCK, [HUP INT QUIT BUS USR1 ALRM TERM CHLD IO], NULL, 8) = 0
setresuid(-1, 0, -1)                    = 0
setresgid(-1, 0, -1)                    = 0
rt_sigprocmask(SIG_UNBLOCK, [HUP INT QUIT BUS USR1 ALRM TERM CHLD IO], NULL, 8) = 0
open("/usr/local/var/proftpd/proftpd.scoreboard", O_RDWR) = 1
rt_sigprocmask(SIG_BLOCK, [HUP INT QUIT BUS USR1 ALRM TERM CHLD IO], NULL, 8) = 0
geteuid()                               = 0
setresgid(-1, 65534, -1)                = 0
setresuid(-1, 65534, -1)                = 0
rt_sigprocmask(SIG_UNBLOCK, [HUP INT QUIT BUS USR1 ALRM TERM CHLD IO], NULL, 8) = 0
fcntl(1, F_SETLKW, {type=F_WRLCK, whence=SEEK_SET, start=0, len=0}) = 0
lseek(1, 32, SEEK_SET)                  = 32
rt_sigprocmask(SIG_BLOCK, [HUP INT QUIT BUS USR1 ALRM TERM CHLD IO], NULL, 8) = 0
setresuid(-1, 0, -1)                    = 0
setresgid(-1, 0, -1)                    = 0
rt_sigprocmask(SIG_UNBLOCK, [HUP INT QUIT BUS USR1 ALRM TERM CHLD IO], NULL, 8) = 0
read(1, "T\7\0\0\376\377\0\0\376\377\0\0intranet\0\0\0\0\0\0\0\0"..., 504) = 504
kill(1876, SIG_0)                       = 0
lseek(1, 0, SEEK_CUR)                   = 536
read(1, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 504) = 504
lseek(1, 0, SEEK_CUR)                   = 1040
read(1, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 504) = 504
lseek(1, 0, SEEK_CUR)                   = 1544
read(1, "", 504)                        = 0
rt_sigprocmask(SIG_BLOCK, [HUP INT QUIT BUS USR1 ALRM TERM CHLD IO], NULL, 8) = 0
geteuid()                               = 0
setresgid(-1, 65534, -1)                = 0
setresuid(-1, 65534, -1)                = 0
rt_sigprocmask(SIG_UNBLOCK, [HUP INT QUIT BUS USR1 ALRM TERM CHLD IO], NULL, 8) = 0
fcntl(1, F_SETLK, {type=F_UNLCK, whence=SEEK_SET, start=0, len=0}) = 0
close(1)                                = 0
alarm(30)                               = 0
lstat("/etc/shutmsg", 0x7fffe736bb00)   = -1 ENOENT (No such file or directory)