execve("/usr/bin/cp", ["cp", "--reflink=always", "a", "b"], [/* 59 vars */]) = 0
brk(0)                                  = 0x117c000
access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=208499, ...}) = 0
mmap(NULL, 208499, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f04d036b000
close(3)                                = 0
open("/usr/lib/libacl.so.1", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\300 \0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=35384, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f04d036a000
mmap(NULL, 2130592, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f04cff75000
mprotect(0x7f04cff7d000, 2093056, PROT_NONE) = 0
mmap(0x7f04d017c000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x7000) = 0x7f04d017c000
close(3)                                = 0
open("/usr/lib/libattr.so.1", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0`\24\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=18736, ...}) = 0
mmap(NULL, 2113912, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f04cfd70000
mprotect(0x7f04cfd74000, 2093056, PROT_NONE) = 0
mmap(0x7f04cff73000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3000) = 0x7f04cff73000
close(3)                                = 0
open("/usr/lib/libc.so.6", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\20\34\2\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=2022349, ...}) = 0
mmap(NULL, 3832336, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f04cf9c8000
mprotect(0x7f04cfb66000, 2097152, PROT_NONE) = 0
mmap(0x7f04cfd66000, 24576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x19e000) = 0x7f04cfd66000
mmap(0x7f04cfd6c000, 14864, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f04cfd6c000
close(3)                                = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f04d0369000
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f04d0368000
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f04d0367000
arch_prctl(ARCH_SET_FS, 0x7f04d0368700) = 0
mprotect(0x7f04cfd66000, 16384, PROT_READ) = 0
mprotect(0x7f04cff73000, 4096, PROT_READ) = 0
mprotect(0x7f04d017c000, 4096, PROT_READ) = 0
mprotect(0x61e000, 4096, PROT_READ)     = 0
mprotect(0x7f04d039e000, 4096, PROT_READ) = 0
munmap(0x7f04d036b000, 208499)          = 0
brk(0)                                  = 0x117c000
brk(0x119d000)                          = 0x119d000
open("/usr/lib/locale/locale-archive", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=1607712, ...}) = 0
mmap(NULL, 1607712, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f04d01de000
close(3)                                = 0
geteuid()                               = 1000
stat("b", 0x7fff700f4da0)               = -1 ENOENT (No such file or directory)
stat("a", {st_mode=S_IFREG|0644, st_size=444364, ...}) = 0
stat("b", 0x7fff700f4b20)               = -1 ENOENT (No such file or directory)
open("a", O_RDONLY)                     = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=444364, ...}) = 0
open("b", O_WRONLY|O_CREAT|O_EXCL, 0644) = 4
fstat(4, {st_mode=S_IFREG|0644, st_size=0, ...}) = 0
ioctl(4, BTRFS_IOC_CLONE, 0x3)          = 0
close(4)                                = 0
close(3)                                = 0
lseek(0, 0, SEEK_CUR)                   = -1 ESPIPE (Illegal seek)
close(0)                                = 0
close(1)                                = 0
close(2)                                = 0
exit_group(0)                           = ?
+++ exited with 0 +++