KURO-BOX:/usr/local/sbin# strace -f /usr/local/sbin/avr_evtd -d /dev/ttyS0
execve("/usr/local/sbin/avr_evtd", ["/usr/local/sbin/avr_evtd", "-d", "/dev/ttyS0"], [/* 17 vars */]) = 0
uname({sys="Linux", node="KURO-BOX", ...}) = 0
brk(0)                                  = 0x10013000
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x30019000
access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY)      = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=11706, ...}) = 0
mmap(NULL, 11706, PROT_READ, MAP_PRIVATE, 3, 0) = 0x3001a000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
open("/lib/tls/libc.so.6", O_RDONLY)    = 3
read(3, "\177ELF\1\2\1\0\0\0\0\0\0\0\0\0\0\3\0\24\0\0\0\1\0\1\313"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0644, st_size=1385396, ...}) = 0
mmap(0xfe8c000, 1456244, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xfe8c000
mprotect(0xffd4000, 112756, PROT_NONE)  = 0
mmap(0xffe3000, 40960, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x147000) = 0xffe3000
mmap(0xffed000, 10356, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xffed000
close(3)                                = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x3001d000
mprotect(0xffe3000, 28672, PROT_READ)   = 0
mprotect(0x30028000, 4096, PROT_READ)   = 0
munmap(0x3001a000, 11706)               = 0
clone(Process 1229 attached
child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x3001d288) = 1229
[pid  1228] exit_group(0)               = ?
Process 1228 detached
setsid()                                = 1229
chdir("/")                              = 0
open("/dev/null", O_RDWR)               = 3
fstat64(3, {st_mode=S_IFCHR|0666, st_rdev=makedev(1, 3), ...}) = 0
dup2(3, 0)                              = 0
dup2(3, 1)                              = 1
dup2(3, 2)                              = 2
close(3)                                = 0
rt_sigaction(SIGTSTP, {SIG_IGN}, {SIG_DFL}, 8) = 0
rt_sigaction(SIGHUP, {SIG_IGN}, {SIG_DFL}, 8) = 0
rt_sigaction(SIGCHLD, {SIG_IGN}, {SIG_DFL}, 8) = 0
rt_sigaction(SIGTERM, {0x10001578, [TERM], SA_RESTART}, {SIG_DFL}, 8) = 0
rt_sigaction(SIGCONT, {0x10001578, [CONT], SA_RESTART}, {SIG_DFL}, 8) = 0
rt_sigaction(SIGINT, {0x10001578, [INT], SA_RESTART}, {SIG_DFL}, 8) = 0
open("/dev/ttyS0", O_RDWR|O_NOCTTY