truss ls
mmap(0x0,32768,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANON,-1,0x0) = 1078124544 (0x4042e000)
issetugid() = 0 (0x0)
lstat("/etc",{ mode=drwxr-xr-x ,inode=1123584,size=2048,blksize=32768 }) = 0 (0x0)
lstat("/etc/libmap.conf",{ mode=-rw-r--r-- ,inode=1123621,size=102,blksize=32768 }) = 0 (0x0)
openat(AT_FDCWD,"/etc/libmap.conf",O_CLOEXEC,00) = 3 (0x3)
fstat(3,{ mode=-rw-r--r-- ,inode=1123621,size=102,blksize=32768 }) = 0 (0x0)
mmap(0x0,102,PROT_READ,MAP_PRIVATE,3,0x0) = 1078157312 (0x40436000)
close(3) = 0 (0x0)
lstat("/usr",{ mode=drwxr-xr-x ,inode=401280,size=512,blksize=32768 }) = 0 (0x0)
lstat("/usr/local",{ mode=drwxr-xr-x ,inode=401287,size=512,blksize=32768 }) = 0 (0x0)
lstat("/usr/local/etc",{ mode=drwxr-xr-x ,inode=483268,size=512,blksize=32768 }) = 0 (0x0)
lstat("/usr/local/etc/libmap.d",0x7fffffdbc0) ERR#2 'No such file or directory'
munmap(0x40436000,102) = 0 (0x0)
openat(AT_FDCWD,"/var/run/ld-elf.so.hints",O_CLOEXEC,00) = 3 (0x3)
read(3,"Ehnt\^A\0\0\0\M^@\0\0\0-\0\0\0\0"...,128) = 128 (0x80)
lseek(3,0x80,SEEK_SET) = 128 (0x80)