# strace of mysql client program (before password was entered (password being 'hello123')
# trace froze until another connection was entered Unfortunately I didn't record where

# root     21036 10887  0 13:54 pts/0    00:00:00 mysql -u root -p -h 127.0.0.1 -P 4040
$ strace -p 21036

Process 21036 attached - interrupt to quit
read(3, "hello123\n", 4096)             = 9
write(3, "\n", 1)                       = 1
ioctl(3, SNDCTL_TMR_CONTINUE or TCSETSF, {B38400 opost isig icanon echo ...}) = 0
close(3)                                = 0
munmap(0x2aaaaaaac000, 4096)            = 0
open("/etc/nsswitch.conf", O_RDONLY)    = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=1696, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2aaaaaaac000
read(3, "#\n# /etc/nsswitch.conf\n#\n# An ex"..., 4096) = 1696
read(3, "", 4096)                       = 0
close(3)                                = 0
munmap(0x2aaaaaaac000, 4096)            = 0
open("/etc/ld.so.cache", O_RDONLY)      = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=52196, ...}) = 0
mmap(NULL, 52196, PROT_READ, MAP_PRIVATE, 3, 0) = 0x2aaaaaaac000
close(3)                                = 0
open("/lib64/libnss_files.so.2", O_RDONLY) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\340\37\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=53880, ...}) = 0
mmap(NULL, 2139432, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x2aaaaaabd000
mprotect(0x2aaaaaac7000, 2093056, PROT_NONE) = 0
mmap(0x2aaaaacc6000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x9000) = 0x2aaaaacc6000
close(3)                                = 0
mprotect(0x2aaaaacc6000, 4096, PROT_READ) = 0
munmap(0x2aaaaaaac000, 52196)           = 0
open("/etc/services", O_RDONLY)         = 3
fcntl(3, F_GETFD)                       = 0
fcntl(3, F_SETFD, FD_CLOEXEC)           = 0
fstat(3, {st_mode=S_IFREG|0644, st_size=362031, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2aaaaaaac000
read(3, "# /etc/services:\n# $Id: services"..., 4096) = 4096
read(3, "rotocol\nntp\t\t123/tcp\nntp\t\t123/ud"..., 4096) = 4096
read(3, "767/udp\nrsync\t\t873/tcp\t\t\t\t# rsyn"..., 4096) = 4096
read(3, "stmanager\ncvspserver\t2401/tcp\t\t\t"..., 4096) = 4096
close(3)                                = 0
munmap(0x2aaaaaaac000, 4096)            = 0
rt_sigaction(SIGPIPE, {SIG_IGN}, {SIG_DFL}, 8) = 0
socket(PF_INET, SOCK_STREAM, IPPROTO_IP) = 3
fcntl(3, F_SETFL, O_RDONLY)             = 0
fcntl(3, F_GETFL)                       = 0x2 (flags O_RDWR)
connect(3, {sa_family=AF_INET, sin_port=htons(4040), sin_addr=inet_addr("127.0.0.1")}, 16) = 0
setsockopt(3, SOL_IP, IP_TOS, [8], 4)   = 0
setsockopt(3, SOL_TCP, TCP_NODELAY, [1], 4) = 0
setsockopt(3, SOL_SOCKET, SO_KEEPALIVE, [1], 4) = 0
setsockopt(3, SOL_SOCKET, SO_RCVTIMEO, "\2003\341\1\0\0\0\0\0\0\0\0\0\0\0\0", 16) = 0
setsockopt(3, SOL_SOCKET, SO_SNDTIMEO, "\2003\341\1\0\0\0\0\0\0\0\0\0\0\0\0", 16) = 0
read(3, "J\0\0\0\n5.0.36sp1-enterprise-gpl-lo"..., 16384) = 78
stat("/usr/share/mysql/charsets/Index.xml", {st_mode=S_IFREG|0755, st_size=18173, ...}) = 0
open("/usr/share/mysql/charsets/Index.xml", O_RDONLY) = 4
read(4, "<?xml version=\'1.0\' encoding=\"ut"..., 18173) = 18173
close(4)                                = 0
write(3, ":\0\0\1\205\246\3\0\0\0\0\1\10\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 62) = 62
read(3, "\7\0\0\2\0\0\0\2\0\0\0", 16384) = 11
rt_sigaction(SIGINT, {0x43c500, [INT], SA_RESTORER|SA_RESTART, 0x3514c300c0}, {SIG_DFL}, 8) = 0
rt_sigaction(SIGQUIT, {0x43c290, [QUIT], SA_RESTORER|SA_RESTART, 0x3514c300c0}, {SIG_DFL}, 8) = 0
fstat(1, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 0), ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2aaaaaaac000
write(1, "Welcome to the MySQL monitor.  C"..., 58) = 58
poll([{fd=3, events=POLLIN|POLLPRI}], 1, 0) = 0
write(3, "!\0\0\0\3select @@version_comment li"..., 37) = 37
read(3, "\1\0\0\1\1\'\0\0\2\3def\0\0\0\21@@version_comme"..., 16384) = 100
write(1, "Your MySQL connection id is 521\n"..., 107) = 107
write(1, "\n", 1)                       = 1
readlink("/root/.mysql_history", 0x7fff5ac622e0, 511) = -1 EINVAL (Invalid argument)
open("/root/.mysql_history", O_RDONLY)  = 4
fstat(4, {st_mode=S_IFREG|0600, st_size=150970, ...}) = 0
mmap(NULL, 151552, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2aaaaacc8000
read(4, "select * from tavle;\necxit\nexit\n"..., 150970) = 150970
close(4)                                = 0
brk(0x85d000)                           = 0x85d000
brk(0x87f000)                           = 0x87f000
brk(0x8a1000)                           = 0x8a1000
munmap(0x2aaaaacc8000, 151552)          = 0
write(1, "Type \'help;\' or \'\\h\' for help. T"..., 62) = 62
write(1, "\n", 1)                       = 1
open("/etc/localtime", O_RDONLY)        = 4
fstat(4, {st_mode=S_IFREG|0644, st_size=3519, ...}) = 0
fstat(4, {st_mode=S_IFREG|0644, st_size=3519, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2aaaaacc8000
read(4, "TZif2\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\4\0\0\0\4\0\0\0\0"..., 4096) = 3519
lseek(4, -2252, SEEK_CUR)               = 1267
read(4, "TZif2\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\5\0\0\0\5\0\0\0\0"..., 4096) = 2252
close(4)                                = 0
munmap(0x2aaaaacc8000, 4096)            = 0
ioctl(1, SNDCTL_TMR_TIMEBASE or TCGETS, {B38400 opost isig icanon echo ...}) = 0
access("/root/.terminfo/x/xterm", R_OK) = -1 ENOENT (No such file or directory)
access("/usr/share/terminfo/x/xterm", R_OK) = 0
open("/usr/share/terminfo/x/xterm", O_RDONLY) = 4
read(4, "\32\0010\0&\0\17\0\235\0014\5", 12) = 12
read(4, "xterm|xterm terminal emulator (X"..., 48) = 48
read(4, "\0\1\0\0\1\0\0\0\1\0\0\0\0\1\1\0\0\0\0\0\0\0\1\0\0\1\0\0\1\0\0\0"..., 38) = 38
read(4, "P\0\10\0\30\0\377\377\377\377\377\377\377\377\377\377\377\377\377\377\377\377\377\377\377\377\10\0@\0", 30) = 30
read(4, "\0\0\4\0\6\0\10\0\31\0\36\0&\0*\0.\0\377\3779\0J\0L\0P\0W\0\377\377"..., 826) = 826
read(4, "\33[Z\0\7\0\r\0\33[%i%p1%d;%p2%dr\0\33[3g\0\33["..., 1332) = 1332
read(4, "\1\0\0\0\v\0\27\0\200\0", 10)  = 10
read(4, "\1", 1)                        = 1
read(4, "\0", 1)                        = 1
read(4, "\377\377\0\0\7\0\16\0\25\0\34\0#\0*\0001\0008\0?\0\0\0\3\0\6\0\n\0\17\0"..., 46) = 46
read(4, "\33[1;2B\0\33[1;5B\0\33[1;6B\0\33[1;5D\0\33[1;"..., 128) = 128
close(4)                                = 0
ioctl(1, SNDCTL_TMR_TIMEBASE or TCGETS, {B38400 opost isig icanon echo ...}) = 0
ioctl(1, SNDCTL_TMR_TIMEBASE or TCGETS, {B38400 opost isig icanon echo ...}) = 0
ioctl(1, SNDCTL_TMR_TIMEBASE or TCGETS, {B38400 opost isig icanon echo ...}) = 0
ioctl(1, TIOCGWINSZ, {ws_row=28, ws_col=77, ws_xpixel=0, ws_ypixel=0}) = 0
ioctl(0, TIOCGWINSZ, {ws_row=28, ws_col=77, ws_xpixel=0, ws_ypixel=0}) = 0
ioctl(0, TIOCGWINSZ, {ws_row=28, ws_col=77, ws_xpixel=0, ws_ypixel=0}) = 0
ioctl(0, TIOCSWINSZ, {ws_row=28, ws_col=77, ws_xpixel=0, ws_ypixel=0}) = 0
ioctl(0, SNDCTL_TMR_TIMEBASE or TCGETS, {B38400 opost isig icanon echo ...}) = 0
open("/usr/lib/locale/locale-archive", O_RDONLY) = 4
fstat(4, {st_mode=S_IFREG|0644, st_size=56434112, ...}) = 0
mmap(NULL, 56434112, PROT_READ, MAP_PRIVATE, 4, 0) = 0x2aaaaacc8000
close(4)                                = 0
stat("/etc/inputrc", {st_mode=S_IFREG|0644, st_size=758, ...}) = 0
open("/etc/inputrc", O_RDONLY)          = 4
read(4, "# do not bell on tab-completion\n"..., 758) = 758
close(4)                                = 0
rt_sigprocmask(SIG_BLOCK, [INT], [], 8) = 0
ioctl(0, TIOCGWINSZ, {ws_row=28, ws_col=77, ws_xpixel=0, ws_ypixel=0}) = 0
ioctl(0, TIOCSWINSZ, {ws_row=28, ws_col=77, ws_xpixel=0, ws_ypixel=0}) = 0
ioctl(0, SNDCTL_TMR_TIMEBASE or TCGETS, {B38400 opost isig icanon echo ...}) = 0
ioctl(0, SNDCTL_TMR_STOP or TCSETSW, {B38400 opost isig -icanon -echo ...}) = 0