strace of the original style find script on amd64/musl

strace_orig_script.log (text/plain), 55.53 KB, created by Ed Wildgoose on 2021-04-22 11:37:26 UTC

# head -n 1000 /tmp/strace.log
execve("/bin/bash", ["bash", "/tmp/test2.sh"], 0x7ffca07f53a8 /* 34 vars */) = 0
arch_prctl(ARCH_SET_FS, 0x7fc4481d1a88) = 0
set_tid_address(0x7fc4481d2034)         = 26734
brk(NULL)                               = 0x557721ba8000
brk(0x557721baa000)                     = 0x557721baa000
mmap(0x557721ba8000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x557721ba8000
open("/etc/ld-musl-x86_64.path", O_RDONLY|O_CLOEXEC) = 3
fcntl(3, F_SETFD, FD_CLOEXEC)           = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc448121000
fcntl(3, F_SETFD, FD_CLOEXEC)           = 0
read(3, "/usr/lib/gcc/x86_64-gentoo-linux"..., 1024) = 91
read(3, "", 1024)                       = 0
close(3)                                = 0
munmap(0x7fc448121000, 4096)            = 0
open("/usr/lib/gcc/x86_64-gentoo-linux-musl/9.3.0/libreadline.so.8", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/lib/libreadline.so.8", O_RDONLY|O_CLOEXEC) = 3
fcntl(3, F_SETFD, FD_CLOEXEC)           = 0
fstat(3, {st_mode=S_IFREG|0755, st_size=326248, ...}) = 0
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\260x\1\0\0\0\0\0"..., 960) = 960
mmap(NULL, 335872, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7fc4480d0000
mmap(0x7fc4480e6000, 163840, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED, 3, 0x16000) = 0x7fc4480e6000
mmap(0x7fc44810e000, 36864, PROT_READ, MAP_PRIVATE|MAP_FIXED, 3, 0x3e000) = 0x7fc44810e000
mmap(0x7fc448118000, 40960, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0x47000) = 0x7fc448118000
mmap(0x7fc448121000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7fc448121000
close(3)                                = 0
open("/usr/lib/gcc/x86_64-gentoo-linux-musl/9.3.0/libtinfo.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/lib/libtinfo.so.6", O_RDONLY|O_CLOEXEC) = 3
fcntl(3, F_SETFD, FD_CLOEXEC)           = 0
fstat(3, {st_mode=S_IFREG|0755, st_size=244544, ...}) = 0
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\340\374\0\0\0\0\0\0"..., 960) = 960
mmap(NULL, 249856, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7fc448093000
mmap(0x7fc4480a2000, 98304, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED, 3, 0xf000) = 0x7fc4480a2000
mmap(0x7fc4480ba000, 65536, PROT_READ, MAP_PRIVATE|MAP_FIXED, 3, 0x27000) = 0x7fc4480ba000
mmap(0x7fc4480cb000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0x37000) = 0x7fc4480cb000
close(3)                                = 0
open("/usr/lib/gcc/x86_64-gentoo-linux-musl/9.3.0/libtinfow.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/lib/libtinfow.so.6", O_RDONLY|O_CLOEXEC) = 3
fcntl(3, F_SETFD, FD_CLOEXEC)           = 0
fstat(3, {st_mode=S_IFREG|0755, st_size=244576, ...}) = 0
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\0\375\0\0\0\0\0\0"..., 960) = 960
mmap(NULL, 249856, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7fc448056000
mmap(0x7fc448065000, 98304, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED, 3, 0xf000) = 0x7fc448065000
mmap(0x7fc44807d000, 65536, PROT_READ, MAP_PRIVATE|MAP_FIXED, 3, 0x27000) = 0x7fc44807d000
mmap(0x7fc44808e000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0x37000) = 0x7fc44808e000
close(3)                                = 0
mprotect(0x7fc448118000, 12288, PROT_READ) = 0
mprotect(0x7fc4480cb000, 16384, PROT_READ) = 0
mprotect(0x7fc4481ce000, 4096, PROT_READ) = 0
mprotect(0x7fc44808e000, 16384, PROT_READ) = 0
mprotect(0x5577215d8000, 12288, PROT_READ) = 0
open("/dev/tty", O_RDWR|O_NONBLOCK)     = 3
close(3)                                = 0
getuid()                                = 0
getgid()                                = 0
geteuid()                               = 0
getegid()                               = 0
rt_sigprocmask(SIG_SETMASK, NULL, [], 8) = 0
ioctl(-1, TIOCGPGRP, 0x7ffeb5d85cbc)    = -1 EBADF (Bad file descriptor)
rt_sigaction(SIGCHLD, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fc448196093}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGCHLD, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fc448196093}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fc448196093}, 8) = 0
rt_sigaction(SIGINT, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7fc448196093}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGINT, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7fc448196093}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7fc448196093}, 8) = 0
rt_sigaction(SIGQUIT, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7fc448196093}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGQUIT, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7fc448196093}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7fc448196093}, 8) = 0
rt_sigaction(SIGTSTP, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7fc448196093}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGTSTP, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7fc448196093}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7fc448196093}, 8) = 0
rt_sigaction(SIGTTIN, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7fc448196093}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGTTIN, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7fc448196093}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7fc448196093}, 8) = 0
rt_sigaction(SIGTTOU, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7fc448196093}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGTTOU, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7fc448196093}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7fc448196093}, 8) = 0
rt_sigprocmask(SIG_BLOCK, NULL, [], 8)  = 0
rt_sigaction(SIGQUIT, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7fc448196093}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7fc448196093}, 8) = 0
uname({sysname="Linux", nodename="grunt", ...}) = 0
mmap(NULL, 28672, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc44804f000
mmap(NULL, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc44804b000
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc44804a000
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc448049000
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc448048000
stat("/var/embedded", {st_mode=S_IFDIR|0755, st_size=76, ...}) = 0
stat(".", {st_mode=S_IFDIR|0755, st_size=76, ...}) = 0
stat("/var", {st_mode=S_IFDIR|0755, st_size=141, ...}) = 0
stat("/var/embedded", {st_mode=S_IFDIR|0755, st_size=76, ...}) = 0
stat("/var/embedded/portage/repos/tpb", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
getpid()                                = 26734
getppid()                               = 26731
stat(".", {st_mode=S_IFDIR|0755, st_size=76, ...}) = 0
stat("/usr/local/sbin/bash", 0x7ffeb5d85870) = -1 ENOENT (No such file or directory)
stat("/usr/local/bin/bash", 0x7ffeb5d85870) = -1 ENOENT (No such file or directory)
stat("/usr/sbin/bash", 0x7ffeb5d85870)  = -1 ENOENT (No such file or directory)
stat("/usr/bin/bash", 0x7ffeb5d85870)   = -1 ENOENT (No such file or directory)
stat("/sbin/bash", 0x7ffeb5d85870)      = -1 ENOENT (No such file or directory)
stat("/bin/bash", {st_mode=S_IFREG|0755, st_size=813120, ...}) = 0
getuid()                                = 0
geteuid()                               = 0
getgid()                                = 0
getegid()                               = 0
faccessat(AT_FDCWD, "/bin/bash", X_OK)  = 0
getuid()                                = 0
geteuid()                               = 0
getgid()                                = 0
getegid()                               = 0
faccessat(AT_FDCWD, "/bin/bash", R_OK)  = 0
stat("/bin/bash", {st_mode=S_IFREG|0755, st_size=813120, ...}) = 0
getuid()                                = 0
geteuid()                               = 0
getgid()                                = 0
getegid()                               = 0
faccessat(AT_FDCWD, "/bin/bash", X_OK)  = 0
getuid()                                = 0
geteuid()                               = 0
getgid()                                = 0
getegid()                               = 0
faccessat(AT_FDCWD, "/bin/bash", R_OK)  = 0
getpid()                                = 26734
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc448047000
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc448046000
getpgid(0)                              = 26731
ioctl(2, TIOCGPGRP, 0x7ffeb5d85b7c)     = -1 ENOTTY (Not a tty)
rt_sigprocmask(SIG_UNBLOCK, [RT_1 RT_2], NULL, 8) = 0
rt_sigaction(SIGCHLD, {sa_handler=0x557721551190, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fc448196093}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fc448196093}, 8) = 0
ioctl(2, TIOCGPGRP, 0x7ffeb5d85b5c)     = -1 ENOTTY (Not a tty)
prlimit64(0, RLIMIT_NPROC, NULL, {rlim_cur=256881, rlim_max=256881}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc448045000
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc448044000
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc448043000
rt_sigprocmask(SIG_SETMASK, NULL, [], 8) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc448042000
open("/tmp/test2.sh", O_RDONLY)         = 3
stat("/tmp/test2.sh", {st_mode=S_IFREG|0644, st_size=89, ...}) = 0
ioctl(3, TIOCGWINSZ, 0x7ffeb5d85cc8)    = -1 ENOTTY (Not a tty)
lseek(3, 0, SEEK_CUR)                   = 0
read(3, "while read d < <(find /tmp/test "..., 80) = 80
lseek(3, 0, SEEK_SET)                   = 0
prlimit64(0, RLIMIT_NOFILE, NULL, {rlim_cur=1024, rlim_max=4*1024}) = 0
fcntl(255, F_GETFD)                     = -1 EBADF (Bad file descriptor)
dup2(3, 255)                            = 255
close(3)                                = 0
fcntl(255, F_SETFD, FD_CLOEXEC)         = 0
fcntl(255, F_GETFL)                     = 0x8000 (flags O_RDONLY|O_LARGEFILE)
fstat(255, {st_mode=S_IFREG|0644, st_size=89, ...}) = 0
lseek(255, 0, SEEK_CUR)                 = 0
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc448040000
read(255, "while read d < <(find /tmp/test "..., 89) = 89
rt_sigprocmask(SIG_BLOCK, NULL, [], 8)  = 0
pipe([3, 4])                            = 0
fcntl(63, F_GETFD)                      = -1 EBADF (Bad file descriptor)
dup2(3, 63)                             = 63
close(3)                                = 0
prlimit64(0, RLIMIT_NOFILE, NULL, {rlim_cur=1024, rlim_max=4*1024}) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [INT CHLD], [], 8) = 0
rt_sigprocmask(SIG_BLOCK, ~[], [INT CHLD], 8) = 0
fork()                                  = 26735
rt_sigprocmask(SIG_SETMASK, [INT CHLD], NULL, 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigaction(SIGCHLD, {sa_handler=0x557721551190, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fc448196093}, {sa_handler=0x557721551190, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fc448196093}, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
close(4)                                = 0
open("/dev/fd/63", O_RDONLY)            = 3
fcntl(0, F_GETFD)                       = 0
fcntl(0, F_DUPFD, 10)                   = 10
fcntl(0, F_GETFD)                       = 0
fcntl(10, F_SETFD, FD_CLOEXEC)          = 0
dup2(3, 0)                              = 0
close(3)                                = 0
ioctl(0, TIOCGWINSZ, 0x7ffeb5d85718)    = -1 ENOTTY (Not a tty)
lseek(0, 0, SEEK_CUR)                   = -1 ESPIPE (Invalid seek)
read(0, "/", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "m", 1)                         = 1
read(0, "p", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "e", 1)                         = 1
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=26735, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG, NULL) = 26735
wait4(-1, 0x7ffeb5d85090, WNOHANG, NULL) = -1 ECHILD (No child process)
rt_sigreturn({mask=[]})                 = 1
read(0, "s", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "a", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "a", 1)                         = 1
read(0, "\n", 1)                        = 1
dup2(10, 0)                             = 0
fcntl(10, F_GETFD)                      = 0x1 (flags FD_CLOEXEC)
close(10)                               = 0
close(63)                               = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc44803f000
writev(1, [{iov_base="/tmp/test/a/a", iov_len=13}, {iov_base="\n", iov_len=1}], 2/tmp/test/a/a
) = 14
rt_sigprocmask(SIG_BLOCK, NULL, [], 8)  = 0
pipe([3, 4])                            = 0
fcntl(63, F_GETFD)                      = -1 EBADF (Bad file descriptor)
dup2(3, 63)                             = 63
close(3)                                = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [INT CHLD], [], 8) = 0
rt_sigprocmask(SIG_BLOCK, ~[], [INT CHLD], 8) = 0
fork()                                  = 26737
rt_sigprocmask(SIG_SETMASK, [INT CHLD], NULL, 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigaction(SIGCHLD, {sa_handler=0x557721551190, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fc448196093}, {sa_handler=0x557721551190, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fc448196093}, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
close(4)                                = 0
open("/dev/fd/63", O_RDONLY)            = 3
fcntl(0, F_GETFD)                       = 0
fcntl(0, F_DUPFD, 10)                   = 10
fcntl(0, F_GETFD)                       = 0
fcntl(10, F_SETFD, FD_CLOEXEC)          = 0
dup2(3, 0)                              = 0
close(3)                                = 0
ioctl(0, TIOCGWINSZ, 0x7ffeb5d85718)    = -1 ENOTTY (Not a tty)
lseek(0, 0, SEEK_CUR)                   = -1 ESPIPE (Invalid seek)
read(0, "/", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "m", 1)                         = 1
read(0, "p", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "e", 1)                         = 1
read(0, "s", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "a", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "a", 1)                         = 1
read(0, "\n", 1)                        = 1
dup2(10, 0)                             = 0
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=26737, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG, NULL) = 26737
wait4(-1, 0x7ffeb5d85310, WNOHANG, NULL) = -1 ECHILD (No child process)
rt_sigreturn({mask=[]})                 = 0
fcntl(10, F_GETFD)                      = 0x1 (flags FD_CLOEXEC)
close(10)                               = 0
close(63)                               = 0
writev(1, [{iov_base="/tmp/test/a/a", iov_len=13}, {iov_base="\n", iov_len=1}], 2/tmp/test/a/a
) = 14
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc44803e000
rt_sigprocmask(SIG_BLOCK, NULL, [], 8)  = 0
pipe([3, 4])                            = 0
fcntl(63, F_GETFD)                      = -1 EBADF (Bad file descriptor)
dup2(3, 63)                             = 63
close(3)                                = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [INT CHLD], [], 8) = 0
rt_sigprocmask(SIG_BLOCK, ~[], [INT CHLD], 8) = 0
fork()                                  = 26739
rt_sigprocmask(SIG_SETMASK, [INT CHLD], NULL, 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigaction(SIGCHLD, {sa_handler=0x557721551190, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fc448196093}, {sa_handler=0x557721551190, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fc448196093}, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
close(4)                                = 0
open("/dev/fd/63", O_RDONLY)            = 3
fcntl(0, F_GETFD)                       = 0
fcntl(0, F_DUPFD, 10)                   = 10
fcntl(0, F_GETFD)                       = 0
fcntl(10, F_SETFD, FD_CLOEXEC)          = 0
dup2(3, 0)                              = 0
close(3)                                = 0
ioctl(0, TIOCGWINSZ, 0x7ffeb5d85718)    = -1 ENOTTY (Not a tty)
lseek(0, 0, SEEK_CUR)                   = -1 ESPIPE (Invalid seek)
read(0, "/", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "m", 1)                         = 1
read(0, "p", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "e", 1)                         = 1
read(0, "s", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "a", 1)                         = 1
read(0, "/", 1)                         = 1
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=26739, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG, NULL) = 26739
wait4(-1, 0x7ffeb5d85090, WNOHANG, NULL) = -1 ECHILD (No child process)
rt_sigreturn({mask=[]})                 = 1
read(0, "a", 1)                         = 1
read(0, "\n", 1)                        = 1
dup2(10, 0)                             = 0
fcntl(10, F_GETFD)                      = 0x1 (flags FD_CLOEXEC)
close(10)                               = 0
close(63)                               = 0
writev(1, [{iov_base="/tmp/test/a/a", iov_len=13}, {iov_base="\n", iov_len=1}], 2/tmp/test/a/a
) = 14
rt_sigprocmask(SIG_BLOCK, NULL, [], 8)  = 0
pipe([3, 4])                            = 0
fcntl(63, F_GETFD)                      = -1 EBADF (Bad file descriptor)
dup2(3, 63)                             = 63
close(3)                                = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [INT CHLD], [], 8) = 0
rt_sigprocmask(SIG_BLOCK, ~[], [INT CHLD], 8) = 0
fork()                                  = 26741
rt_sigprocmask(SIG_SETMASK, [INT CHLD], NULL, 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigaction(SIGCHLD, {sa_handler=0x557721551190, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fc448196093}, {sa_handler=0x557721551190, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fc448196093}, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
close(4)                                = 0
open("/dev/fd/63", O_RDONLY)            = 3
fcntl(0, F_GETFD)                       = 0
fcntl(0, F_DUPFD, 10)                   = 10
fcntl(0, F_GETFD)                       = 0
fcntl(10, F_SETFD, FD_CLOEXEC)          = 0
dup2(3, 0)                              = 0
close(3)                                = 0
ioctl(0, TIOCGWINSZ, 0x7ffeb5d85718)    = -1 ENOTTY (Not a tty)
lseek(0, 0, SEEK_CUR)                   = -1 ESPIPE (Invalid seek)
read(0, "/", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "m", 1)                         = 1
read(0, "p", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "e", 1)                         = 1
read(0, "s", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "a", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "a", 1)                         = 1
read(0, "\n", 1)                        = 1
dup2(10, 0)                             = 0
fcntl(10, F_GETFD)                      = 0x1 (flags FD_CLOEXEC)
close(10)                               = 0
close(63)                               = 0
writev(1, [{iov_base="/tmp/test/a/a", iov_len=13}, {iov_base="\n", iov_len=1}], 2/tmp/test/a/a
) = 14
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=26741, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG, NULL) = 26741
wait4(-1, 0x7ffeb5d84f10, WNOHANG, NULL) = -1 ECHILD (No child process)
rt_sigreturn({mask=[]})                 = 12
rt_sigprocmask(SIG_BLOCK, NULL, [], 8)  = 0
pipe([3, 4])                            = 0
fcntl(63, F_GETFD)                      = -1 EBADF (Bad file descriptor)
dup2(3, 63)                             = 63
close(3)                                = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [INT CHLD], [], 8) = 0
rt_sigprocmask(SIG_BLOCK, ~[], [INT CHLD], 8) = 0
fork()                                  = 26743
rt_sigprocmask(SIG_SETMASK, [INT CHLD], NULL, 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigaction(SIGCHLD, {sa_handler=0x557721551190, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fc448196093}, {sa_handler=0x557721551190, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fc448196093}, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
close(4)                                = 0
open("/dev/fd/63", O_RDONLY)            = 3
fcntl(0, F_GETFD)                       = 0
fcntl(0, F_DUPFD, 10)                   = 10
fcntl(0, F_GETFD)                       = 0
fcntl(10, F_SETFD, FD_CLOEXEC)          = 0
dup2(3, 0)                              = 0
close(3)                                = 0
ioctl(0, TIOCGWINSZ, 0x7ffeb5d85718)    = -1 ENOTTY (Not a tty)
lseek(0, 0, SEEK_CUR)                   = -1 ESPIPE (Invalid seek)
read(0, "/", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "m", 1)                         = 1
read(0, "p", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "e", 1)                         = 1
read(0, "s", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "a", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "a", 1)                         = 1
read(0, "\n", 1)                        = 1
dup2(10, 0)                             = 0
fcntl(10, F_GETFD)                      = 0x1 (flags FD_CLOEXEC)
close(10)                               = 0
close(63)                               = 0
writev(1, [{iov_base="/tmp/test/a/a", iov_len=13}, {iov_base="\n", iov_len=1}], 2/tmp/test/a/a
) = 14
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=26743, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG, NULL) = 26743
wait4(-1, 0x7ffeb5d852d0, WNOHANG, NULL) = -1 ECHILD (No child process)
rt_sigreturn({mask=[]})                 = 14
rt_sigprocmask(SIG_BLOCK, NULL, [], 8)  = 0
pipe([3, 4])                            = 0
fcntl(63, F_GETFD)                      = -1 EBADF (Bad file descriptor)
dup2(3, 63)                             = 63
close(3)                                = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [INT CHLD], [], 8) = 0
rt_sigprocmask(SIG_BLOCK, ~[], [INT CHLD], 8) = 0
fork()                                  = 26745
rt_sigprocmask(SIG_SETMASK, [INT CHLD], NULL, 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigaction(SIGCHLD, {sa_handler=0x557721551190, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fc448196093}, {sa_handler=0x557721551190, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fc448196093}, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
close(4)                                = 0
open("/dev/fd/63", O_RDONLY)            = 3
fcntl(0, F_GETFD)                       = 0
fcntl(0, F_DUPFD, 10)                   = 10
fcntl(0, F_GETFD)                       = 0
fcntl(10, F_SETFD, FD_CLOEXEC)          = 0
dup2(3, 0)                              = 0
close(3)                                = 0
ioctl(0, TIOCGWINSZ, 0x7ffeb5d85718)    = -1 ENOTTY (Not a tty)
lseek(0, 0, SEEK_CUR)                   = -1 ESPIPE (Invalid seek)
read(0, "/", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "m", 1)                         = 1
read(0, "p", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "e", 1)                         = 1
read(0, "s", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "a", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "a", 1)                         = 1
read(0, "\n", 1)                        = 1
dup2(10, 0)                             = 0
fcntl(10, F_GETFD)                      = 0x1 (flags FD_CLOEXEC)
close(10)                               = 0
close(63)                               = 0
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=26745, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG, NULL) = 26745
wait4(-1, 0x7ffeb5d85290, WNOHANG, NULL) = -1 ECHILD (No child process)
rt_sigreturn({mask=[]})                 = 99
brk(0x557721bab000)                     = 0x557721bab000
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc44803d000
munmap(0x7fc44803d000, 4096)            = 0
writev(1, [{iov_base="/tmp/test/a/a", iov_len=13}, {iov_base="\n", iov_len=1}], 2/tmp/test/a/a
) = 14
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc44803d000
munmap(0x7fc44803d000, 4096)            = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc44803d000
rt_sigprocmask(SIG_BLOCK, NULL, [], 8)  = 0
pipe([3, 4])                            = 0
fcntl(63, F_GETFD)                      = -1 EBADF (Bad file descriptor)
dup2(3, 63)                             = 63
close(3)                                = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [INT CHLD], [], 8) = 0
rt_sigprocmask(SIG_BLOCK, ~[], [INT CHLD], 8) = 0
fork()                                  = 26747
rt_sigprocmask(SIG_SETMASK, [INT CHLD], NULL, 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigaction(SIGCHLD, {sa_handler=0x557721551190, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fc448196093}, {sa_handler=0x557721551190, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fc448196093}, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
close(4)                                = 0
open("/dev/fd/63", O_RDONLY)            = 3
fcntl(0, F_GETFD)                       = 0
fcntl(0, F_DUPFD, 10)                   = 10
fcntl(0, F_GETFD)                       = 0
fcntl(10, F_SETFD, FD_CLOEXEC)          = 0
dup2(3, 0)                              = 0
close(3)                                = 0
ioctl(0, TIOCGWINSZ, 0x7ffeb5d85718)    = -1 ENOTTY (Not a tty)
lseek(0, 0, SEEK_CUR)                   = -1 ESPIPE (Invalid seek)
read(0, "/", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "m", 1)                         = 1
read(0, "p", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "e", 1)                         = 1
read(0, "s", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "a", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "a", 1)                         = 1
read(0, "\n", 1)                        = 1
dup2(10, 0)                             = 0
fcntl(10, F_GETFD)                      = 0x1 (flags FD_CLOEXEC)
close(10)                               = 0
close(63)                               = 0
writev(1, [{iov_base="/tmp/test/a/a", iov_len=13}, {iov_base="\n", iov_len=1}], 2/tmp/test/a/a
) = 14
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=26747, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG, NULL) = 26747
wait4(-1, 0x7ffeb5d85150, WNOHANG, NULL) = -1 ECHILD (No child process)
rt_sigreturn({mask=[]})                 = 1
rt_sigprocmask(SIG_BLOCK, NULL, [], 8)  = 0
pipe([3, 4])                            = 0
fcntl(63, F_GETFD)                      = -1 EBADF (Bad file descriptor)
dup2(3, 63)                             = 63
close(3)                                = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [INT CHLD], [], 8) = 0
rt_sigprocmask(SIG_BLOCK, ~[], [INT CHLD], 8) = 0
fork()                                  = 26749
rt_sigprocmask(SIG_SETMASK, [INT CHLD], NULL, 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigaction(SIGCHLD, {sa_handler=0x557721551190, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fc448196093}, {sa_handler=0x557721551190, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fc448196093}, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
close(4)                                = 0
open("/dev/fd/63", O_RDONLY)            = 3
fcntl(0, F_GETFD)                       = 0
fcntl(0, F_DUPFD, 10)                   = 10
fcntl(0, F_GETFD)                       = 0
fcntl(10, F_SETFD, FD_CLOEXEC)          = 0
dup2(3, 0)                              = 0
close(3)                                = 0
ioctl(0, TIOCGWINSZ, 0x7ffeb5d85718)    = -1 ENOTTY (Not a tty)
lseek(0, 0, SEEK_CUR)                   = -1 ESPIPE (Invalid seek)
read(0, "/", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "m", 1)                         = 1
read(0, "p", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "e", 1)                         = 1
read(0, "s", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "a", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "a", 1)                         = 1
read(0, "\n", 1)                        = 1
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=26749, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG, NULL) = 26749
wait4(-1, 0x7ffeb5d85090, WNOHANG, NULL) = -1 ECHILD (No child process)
rt_sigreturn({mask=[]})                 = 1
dup2(10, 0)                             = 0
fcntl(10, F_GETFD)                      = 0x1 (flags FD_CLOEXEC)
close(10)                               = 0
close(63)                               = 0
writev(1, [{iov_base="/tmp/test/a/a", iov_len=13}, {iov_base="\n", iov_len=1}], 2/tmp/test/a/a
) = 14
rt_sigprocmask(SIG_BLOCK, NULL, [], 8)  = 0
pipe([3, 4])                            = 0
fcntl(63, F_GETFD)                      = -1 EBADF (Bad file descriptor)
dup2(3, 63)                             = 63
close(3)                                = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [INT CHLD], [], 8) = 0
rt_sigprocmask(SIG_BLOCK, ~[], [INT CHLD], 8) = 0
fork()                                  = 26751
rt_sigprocmask(SIG_SETMASK, [INT CHLD], NULL, 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigaction(SIGCHLD, {sa_handler=0x557721551190, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fc448196093}, {sa_handler=0x557721551190, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fc448196093}, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
close(4)                                = 0
open("/dev/fd/63", O_RDONLY)            = 3
fcntl(0, F_GETFD)                       = 0
fcntl(0, F_DUPFD, 10)                   = 10
fcntl(0, F_GETFD)                       = 0
fcntl(10, F_SETFD, FD_CLOEXEC)          = 0
dup2(3, 0)                              = 0
close(3)                                = 0
ioctl(0, TIOCGWINSZ, 0x7ffeb5d85718)    = -1 ENOTTY (Not a tty)
lseek(0, 0, SEEK_CUR)                   = -1 ESPIPE (Invalid seek)
read(0, "/", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "m", 1)                         = 1
read(0, "p", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "e", 1)                         = 1
read(0, "s", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "a", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "a", 1)                         = 1
read(0, "\n", 1)                        = 1
dup2(10, 0)                             = 0
fcntl(10, F_GETFD)                      = 0x1 (flags FD_CLOEXEC)
close(10)                               = 0
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=26751, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG, NULL) = 26751
wait4(-1, 0x7ffeb5d852d0, WNOHANG, NULL) = -1 ECHILD (No child process)
rt_sigreturn({mask=[]})                 = 0
close(63)                               = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc44803c000
munmap(0x7fc44803c000, 4096)            = 0
writev(1, [{iov_base="/tmp/test/a/a", iov_len=13}, {iov_base="\n", iov_len=1}], 2/tmp/test/a/a
) = 14
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc44803c000
munmap(0x7fc44803c000, 4096)            = 0
rt_sigprocmask(SIG_BLOCK, NULL, [], 8)  = 0
pipe([3, 4])                            = 0
fcntl(63, F_GETFD)                      = -1 EBADF (Bad file descriptor)
dup2(3, 63)                             = 63
close(3)                                = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [INT CHLD], [], 8) = 0
rt_sigprocmask(SIG_BLOCK, ~[], [INT CHLD], 8) = 0
fork()                                  = 26753
rt_sigprocmask(SIG_SETMASK, [INT CHLD], NULL, 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigaction(SIGCHLD, {sa_handler=0x557721551190, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fc448196093}, {sa_handler=0x557721551190, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fc448196093}, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
close(4)                                = 0
open("/dev/fd/63", O_RDONLY)            = 3
fcntl(0, F_GETFD)                       = 0
fcntl(0, F_DUPFD, 10)                   = 10
fcntl(0, F_GETFD)                       = 0
fcntl(10, F_SETFD, FD_CLOEXEC)          = 0
dup2(3, 0)                              = 0
close(3)                                = 0
ioctl(0, TIOCGWINSZ, 0x7ffeb5d85718)    = -1 ENOTTY (Not a tty)
lseek(0, 0, SEEK_CUR)                   = -1 ESPIPE (Invalid seek)
read(0, "/", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "m", 1)                         = 1
read(0, "p", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "e", 1)                         = 1
read(0, "s", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "a", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "a", 1)                         = 1
read(0, "\n", 1)                        = 1
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=26753, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG, NULL) = 26753
wait4(-1, 0x7ffeb5d85090, WNOHANG, NULL) = -1 ECHILD (No child process)
rt_sigreturn({mask=[]})                 = 1
dup2(10, 0)                             = 0
fcntl(10, F_GETFD)                      = 0x1 (flags FD_CLOEXEC)
close(10)                               = 0
close(63)                               = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc44803c000
munmap(0x7fc44803c000, 4096)            = 0
writev(1, [{iov_base="/tmp/test/a/a", iov_len=13}, {iov_base="\n", iov_len=1}], 2/tmp/test/a/a
) = 14
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc44803c000
munmap(0x7fc44803c000, 4096)            = 0
rt_sigprocmask(SIG_BLOCK, NULL, [], 8)  = 0
pipe([3, 4])                            = 0
fcntl(63, F_GETFD)                      = -1 EBADF (Bad file descriptor)
dup2(3, 63)                             = 63
close(3)                                = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [INT CHLD], [], 8) = 0
rt_sigprocmask(SIG_BLOCK, ~[], [INT CHLD], 8) = 0
fork()                                  = 26755
rt_sigprocmask(SIG_SETMASK, [INT CHLD], NULL, 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigaction(SIGCHLD, {sa_handler=0x557721551190, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fc448196093}, {sa_handler=0x557721551190, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fc448196093}, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
close(4)                                = 0
open("/dev/fd/63", O_RDONLY)            = 3
fcntl(0, F_GETFD)                       = 0
fcntl(0, F_DUPFD, 10)                   = 10
fcntl(0, F_GETFD)                       = 0
fcntl(10, F_SETFD, FD_CLOEXEC)          = 0
dup2(3, 0)                              = 0
close(3)                                = 0
ioctl(0, TIOCGWINSZ, 0x7ffeb5d85718)    = -1 ENOTTY (Not a tty)
lseek(0, 0, SEEK_CUR)                   = -1 ESPIPE (Invalid seek)
read(0, "/", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "m", 1)                         = 1
read(0, "p", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "e", 1)                         = 1
read(0, "s", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "a", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "a", 1)                         = 1
read(0, "\n", 1)                        = 1
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=26755, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG, NULL) = 26755
wait4(-1, 0x7ffeb5d85090, WNOHANG, NULL) = -1 ECHILD (No child process)
rt_sigreturn({mask=[]})                 = 1
dup2(10, 0)                             = 0
fcntl(10, F_GETFD)                      = 0x1 (flags FD_CLOEXEC)
close(10)                               = 0
close(63)                               = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc44803c000
munmap(0x7fc44803c000, 4096)            = 0
writev(1, [{iov_base="/tmp/test/a/a", iov_len=13}, {iov_base="\n", iov_len=1}], 2/tmp/test/a/a
) = 14
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc44803c000
munmap(0x7fc44803c000, 4096)            = 0
rt_sigprocmask(SIG_BLOCK, NULL, [], 8)  = 0
pipe([3, 4])                            = 0
fcntl(63, F_GETFD)                      = -1 EBADF (Bad file descriptor)
dup2(3, 63)                             = 63
close(3)                                = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [INT CHLD], [], 8) = 0
rt_sigprocmask(SIG_BLOCK, ~[], [INT CHLD], 8) = 0
fork()                                  = 26757
rt_sigprocmask(SIG_SETMASK, [INT CHLD], NULL, 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigaction(SIGCHLD, {sa_handler=0x557721551190, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fc448196093}, {sa_handler=0x557721551190, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fc448196093}, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
close(4)                                = 0
open("/dev/fd/63", O_RDONLY)            = 3
fcntl(0, F_GETFD)                       = 0
fcntl(0, F_DUPFD, 10)                   = 10
fcntl(0, F_GETFD)                       = 0
fcntl(10, F_SETFD, FD_CLOEXEC)          = 0
dup2(3, 0)                              = 0
close(3)                                = 0
ioctl(0, TIOCGWINSZ, 0x7ffeb5d85718)    = -1 ENOTTY (Not a tty)
lseek(0, 0, SEEK_CUR)                   = -1 ESPIPE (Invalid seek)
read(0, "/", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "m", 1)                         = 1
read(0, "p", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "e", 1)                         = 1
read(0, "s", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "a", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "a", 1)                         = 1
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=26757, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG, NULL) = 26757
wait4(-1, 0x7ffeb5d85090, WNOHANG, NULL) = -1 ECHILD (No child process)
rt_sigreturn({mask=[]})                 = 1
read(0, "\n", 1)                        = 1
dup2(10, 0)                             = 0
fcntl(10, F_GETFD)                      = 0x1 (flags FD_CLOEXEC)
close(10)                               = 0
close(63)                               = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc44803c000
munmap(0x7fc44803c000, 4096)            = 0
writev(1, [{iov_base="/tmp/test/a/a", iov_len=13}, {iov_base="\n", iov_len=1}], 2/tmp/test/a/a
) = 14
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc44803c000
munmap(0x7fc44803c000, 4096)            = 0
rt_sigprocmask(SIG_BLOCK, NULL, [], 8)  = 0
pipe([3, 4])                            = 0
fcntl(63, F_GETFD)                      = -1 EBADF (Bad file descriptor)
dup2(3, 63)                             = 63
close(3)                                = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [INT CHLD], [], 8) = 0
rt_sigprocmask(SIG_BLOCK, ~[], [INT CHLD], 8) = 0
fork()                                  = 26759
rt_sigprocmask(SIG_SETMASK, [INT CHLD], NULL, 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigaction(SIGCHLD, {sa_handler=0x557721551190, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fc448196093}, {sa_handler=0x557721551190, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fc448196093}, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
close(4)                                = 0
open("/dev/fd/63", O_RDONLY)            = 3
fcntl(0, F_GETFD)                       = 0
fcntl(0, F_DUPFD, 10)                   = 10
fcntl(0, F_GETFD)                       = 0
fcntl(10, F_SETFD, FD_CLOEXEC)          = 0
dup2(3, 0)                              = 0
close(3)                                = 0
ioctl(0, TIOCGWINSZ, 0x7ffeb5d85718)    = -1 ENOTTY (Not a tty)
lseek(0, 0, SEEK_CUR)                   = -1 ESPIPE (Invalid seek)
read(0, "/", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "m", 1)                         = 1
read(0, "p", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "e", 1)                         = 1
read(0, "s", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "a", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "a", 1)                         = 1
read(0, "\n", 1)                        = 1
dup2(10, 0)                             = 0
fcntl(10, F_GETFD)                      = 0x1 (flags FD_CLOEXEC)
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=26759, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG, NULL) = 26759
wait4(-1, 0x7ffeb5d852d0, WNOHANG, NULL) = -1 ECHILD (No child process)
rt_sigreturn({mask=[]})                 = 1
close(10)                               = 0
close(63)                               = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc44803c000
munmap(0x7fc44803c000, 4096)            = 0
writev(1, [{iov_base="/tmp/test/a/a", iov_len=13}, {iov_base="\n", iov_len=1}], 2/tmp/test/a/a
) = 14
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc44803c000
munmap(0x7fc44803c000, 4096)            = 0
rt_sigprocmask(SIG_BLOCK, NULL, [], 8)  = 0
pipe([3, 4])                            = 0
fcntl(63, F_GETFD)                      = -1 EBADF (Bad file descriptor)
dup2(3, 63)                             = 63
close(3)                                = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [INT CHLD], [], 8) = 0
rt_sigprocmask(SIG_BLOCK, ~[], [INT CHLD], 8) = 0
fork()                                  = 26761
rt_sigprocmask(SIG_SETMASK, [INT CHLD], NULL, 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigaction(SIGCHLD, {sa_handler=0x557721551190, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fc448196093}, {sa_handler=0x557721551190, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fc448196093}, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
close(4)                                = 0
open("/dev/fd/63", O_RDONLY)            = 3
fcntl(0, F_GETFD)                       = 0
fcntl(0, F_DUPFD, 10)                   = 10
fcntl(0, F_GETFD)                       = 0
fcntl(10, F_SETFD, FD_CLOEXEC)          = 0
dup2(3, 0)                              = 0
close(3)                                = 0
ioctl(0, TIOCGWINSZ, 0x7ffeb5d85718)    = -1 ENOTTY (Not a tty)
lseek(0, 0, SEEK_CUR)                   = -1 ESPIPE (Invalid seek)
read(0, "/", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "m", 1)                         = 1
read(0, "p", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "e", 1)                         = 1
read(0, "s", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "a", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "a", 1)                         = 1
read(0, "\n", 1)                        = 1
dup2(10, 0)                             = 0
fcntl(10, F_GETFD)                      = 0x1 (flags FD_CLOEXEC)
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=26761, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG, NULL) = 26761
wait4(-1, 0x7ffeb5d852d0, WNOHANG, NULL) = -1 ECHILD (No child process)
rt_sigreturn({mask=[]})                 = 1
close(10)                               = 0
close(63)                               = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc44803c000
munmap(0x7fc44803c000, 4096)            = 0
writev(1, [{iov_base="/tmp/test/a/a", iov_len=13}, {iov_base="\n", iov_len=1}], 2/tmp/test/a/a
) = 14
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc44803c000
munmap(0x7fc44803c000, 4096)            = 0
rt_sigprocmask(SIG_BLOCK, NULL, [], 8)  = 0
pipe([3, 4])                            = 0
fcntl(63, F_GETFD)                      = -1 EBADF (Bad file descriptor)
dup2(3, 63)                             = 63
close(3)                                = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [INT CHLD], [], 8) = 0
rt_sigprocmask(SIG_BLOCK, ~[], [INT CHLD], 8) = 0
fork()                                  = 26763
rt_sigprocmask(SIG_SETMASK, [INT CHLD], NULL, 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigaction(SIGCHLD, {sa_handler=0x557721551190, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fc448196093}, {sa_handler=0x557721551190, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fc448196093}, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
close(4)                                = 0
open("/dev/fd/63", O_RDONLY)            = 3
fcntl(0, F_GETFD)                       = 0
fcntl(0, F_DUPFD, 10)                   = 10
fcntl(0, F_GETFD)                       = 0
fcntl(10, F_SETFD, FD_CLOEXEC)          = 0
dup2(3, 0)                              = 0
close(3)                                = 0
ioctl(0, TIOCGWINSZ, 0x7ffeb5d85718)    = -1 ENOTTY (Not a tty)
lseek(0, 0, SEEK_CUR)                   = -1 ESPIPE (Invalid seek)
read(0, "/", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "m", 1)                         = 1
read(0, "p", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "e", 1)                         = 1
read(0, "s", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "a", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "a", 1)                         = 1
read(0, "\n", 1)                        = 1
dup2(10, 0)                             = 0
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=26763, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG, NULL) = 26763
wait4(-1, 0x7ffeb5d85310, WNOHANG, NULL) = -1 ECHILD (No child process)
rt_sigreturn({mask=[]})                 = 0
fcntl(10, F_GETFD)                      = 0x1 (flags FD_CLOEXEC)
close(10)                               = 0
close(63)                               = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc44803c000
munmap(0x7fc44803c000, 4096)            = 0
writev(1, [{iov_base="/tmp/test/a/a", iov_len=13}, {iov_base="\n", iov_len=1}], 2/tmp/test/a/a
) = 14
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc44803c000
munmap(0x7fc44803c000, 4096)            = 0
rt_sigprocmask(SIG_BLOCK, NULL, [], 8)  = 0
pipe([3, 4])                            = 0
fcntl(63, F_GETFD)                      = -1 EBADF (Bad file descriptor)
dup2(3, 63)                             = 63
close(3)                                = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [INT CHLD], [], 8) = 0
rt_sigprocmask(SIG_BLOCK, ~[], [INT CHLD], 8) = 0
fork()                                  = 26765
rt_sigprocmask(SIG_SETMASK, [INT CHLD], NULL, 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigaction(SIGCHLD, {sa_handler=0x557721551190, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fc448196093}, {sa_handler=0x557721551190, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7fc448196093}, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
close(4)                                = 0
open("/dev/fd/63", O_RDONLY)            = 3
fcntl(0, F_GETFD)                       = 0
fcntl(0, F_DUPFD, 10)                   = 10
fcntl(0, F_GETFD)                       = 0
fcntl(10, F_SETFD, FD_CLOEXEC)          = 0
dup2(3, 0)                              = 0
close(3)                                = 0
ioctl(0, TIOCGWINSZ, 0x7ffeb5d85718)    = -1 ENOTTY (Not a tty)
lseek(0, 0, SEEK_CUR)                   = -1 ESPIPE (Invalid seek)
read(0, "/", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "m", 1)                         = 1
read(0, "p", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "e", 1)                         = 1
read(0, "s", 1)                         = 1
read(0, "t", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "a", 1)                         = 1
read(0, "/", 1)                         = 1
read(0, "a", 1)                         = 1
read(0, "\n", 1)                        = 1
dup2(10, 0)                             = 0
fcntl(10, F_GETFD)                      = 0x1 (flags FD_CLOEXEC)
close(10)                               = 0
close(63)                               = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc44803c000
munmap(0x7fc44803c000, 4096)            = 0
writev(1, [{iov_base="/tmp/test/a/a", iov_len=13}, {iov_base="\n", iov_len=1}], 2/tmp/test/a/a
) = 14
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=26765, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG, NULL) = 26765
wait4(-1, 0x7ffeb5d852d0, WNOHANG, NULL) = -1 ECHILD (No child process)
rt_sigreturn({mask=[]})                 = 14
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc44803c000
munmap(0x7fc44803c000, 4096)            = 0
rt_sigprocmask(SIG_BLOCK, NULL, [], 8)  = 0
pipe([3, 4])                            = 0