ldd

hi,
Code:ldd /usr/sbin/named
linux-vdso.so.1 => (0x00007fff79692000)
liblwres.so.160 => /lib64/liblwres.so.160 (0x00007f644f481000)
libdns.so.1102 => /lib64/libdns.so.1102 (0x00007f644f049000)
libbind9.so.160 => /lib64/libbind9.so.160 (0x00007f644ee39000)
libisccfg.so.160 => /lib64/libisccfg.so.160 (0x00007f644ec0b000)
libgssapi_krb5.so.2 => /lib64/libgssapi_krb5.so.2 (0x00007f644e9be000)
libkrb5.so.3 => /lib64/libkrb5.so.3 (0x00007f644e6d5000)
libk5crypto.so.3 => /lib64/libk5crypto.so.3 (0x00007f644e4a2000)
libcom_err.so.2 => /lib64/libcom_err.so.2 (0x00007f644e29e000)
libisccc.so.160 => /lib64/libisccc.so.160 (0x00007f644e093000)
libisc.so.169 => /lib64/libisc.so.169 (0x00007f644de16000)
libcrypto.so.10 => /lib64/libcrypto.so.10 (0x00007f644d9b3000)
libcap.so.2 => /lib64/libcap.so.2 (0x00007f644d7ae000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f644d592000)
libGeoIP.so.1 => /lib64/libGeoIP.so.1 (0x00007f644d362000)
libxml2.so.2 => /lib64/libxml2.so.2 (0x00007f644cff8000)
libz.so.1 => /lib64/libz.so.1 (0x00007f644cde2000)
libm.so.6 => /lib64/libm.so.6 (0x00007f644cae0000)
libdl.so.2 => /lib64/libdl.so.2 (0x00007f644c8dc000)
libc.so.6 => /lib64/libc.so.6 (0x00007f644c50e000)
libkrb5support.so.0 => /lib64/libkrb5support.so.0 (0x00007f644c2fe000)
libkeyutils.so.1 => /lib64/libkeyutils.so.1 (0x00007f644c0fa000)
libresolv.so.2 => /lib64/libresolv.so.2 (0x00007f644bee0000)
/lib64/ld-linux-x86-64.so.2 (0x00007f644f959000)
libattr.so.1 => /lib64/libattr.so.1 (0x00007f644bcdb000)
liblzma.so.5 => /lib64/liblzma.so.5 (0x00007f644bab5000)
libselinux.so.1 => /lib64/libselinux.so.1 (0x00007f644b88e000)
libpcre.so.1 => /lib64/libpcre.so.1 (0x00007f644b62c000)
and
lsof -p 1439|grep .so
named 1439 named mem REG 253,0 37168 6792 /usr/lib64/libnss_sss.so.2
named 1439 named mem REG 253,0 61560 41770 /usr/lib64/libnss_files-2.17.so
named 1439 named mem REG 253,0 402384 42119 /usr/lib64/libpcre.so.1.2.0
named 1439 named mem REG 253,0 155744 42128 /usr/lib64/libselinux.so.1
named 1439 named mem REG 253,0 157424 42139 /usr/lib64/liblzma.so.5.2.2
named 1439 named mem REG 253,0 19896 85820 /usr/lib64/libattr.so.1.1.0
named 1439 named mem REG 253,0 109976 386239 /usr/lib64/libresolv-2.17.so
named 1439 named mem REG 253,0 15688 91050 /usr/lib64/libkeyutils.so.1.5
named 1439 named mem REG 253,0 67104 263574 /usr/lib64/libkrb5support.so.0.1
named 1439 named mem REG 253,0 2156344 41745 /usr/lib64/libc-2.17.so
named 1439 named mem REG 253,0 19248 41752 /usr/lib64/libdl-2.17.so
named 1439 named mem REG 253,0 1136944 41755 /usr/lib64/libm-2.17.so
named 1439 named mem REG 253,0 90248 42131 /usr/lib64/libz.so.1.2.7
named 1439 named mem REG 253,0 1509528 85787 /usr/lib64/libxml2.so.2.9.1
named 1439 named mem REG 253,0 197088 6840 /usr/lib64/libGeoIP.so.1.5.0
named 1439 named mem REG 253,0 142144 386089 /usr/lib64/libpthread-2.17.so
named 1439 named mem REG 253,0 20048 85824 /usr/lib64/libcap.so.2.22
named 1439 named mem REG 253,0 2520768 6030 /usr/lib64/libcrypto.so.1.0.2k
named 1439 named mem REG 253,0 517360 6846 /usr/lib64/libisc.so.169.0.3
named 1439 named mem REG 253,0 45544 6852 /usr/lib64/libisccc.so.160.0.3
named 1439 named mem REG 253,0 15856 42141 /usr/lib64/libcom_err.so.2.1
named 1439 named mem REG 253,0 210784 263566 /usr/lib64/libk5crypto.so.3.1
named 1439 named mem REG 253,0 967840 263572 /usr/lib64/libkrb5.so.3.3
named 1439 named mem REG 253,0 320720 263562 /usr/lib64/libgssapi_krb5.so.2.2
named 1439 named mem REG 253,0 187264 6848 /usr/lib64/libisccfg.so.160.2.1
named 1439 named mem REG 253,0 65408 6850 /usr/lib64/libbind9.so.160.0.8
named 1439 named mem REG 253,0 2345592 6842 /usr/lib64/libdns.so.1102.1.2
named 1439 named mem REG 253,0 78272 6854 /usr/lib64/liblwres.so.160.0.2
named 1439 named mem REG 253,0 163312 386276 /usr/lib64/ld-2.17.sowhere
ps -ef|grep named
named 1439 1 0 03:26 ? 00:00:01 /usr/sbin/named -u named -c /etc/named.conf

i expected that all the so libraries showed on ldd command to be opened when named run.but i see from lsof that only a part of them.
why this?

Code: ls -l /proc/1439/fd
total 0
lrwx------. 1 named named 64 Mar 25 03:40 0 -> /dev/null
lrwx------. 1 named named 64 Mar 25 03:40 1 -> /dev/null
lrwx------. 1 named named 64 Mar 25 03:40 10 -> anon_inode:[eventpoll]
lr-x------. 1 named named 64 Mar 25 03:40 11 -> /usr/share/GeoIP/GeoIP-initial.dat
lr-x------. 1 named named 64 Mar 25 03:40 12 -> /usr/share/GeoIP/GeoIPv6-initial.dat
lr-x------. 1 named named 64 Mar 25 03:40 13 -> /dev/random
l-wx------. 1 named named 64 Mar 25 03:40 14 -> /var/named/data/named.run
lrwx------. 1 named named 64 Mar 25 03:40 2 -> /dev/null
lrwx------. 1 named named 64 Mar 25 03:40 20 -> socket:[23128]
lrwx------. 1 named named 64 Mar 25 03:40 21 -> socket:[23142]
lrwx------. 1 named named 64 Mar 25 03:40 22 -> socket:[23144]
lrwx------. 1 named named 64 Mar 25 03:40 23 -> socket:[23146]
lrwx------. 1 named named 64 Mar 25 03:40 24 -> socket:[23149]
lrwx------. 1 named named 64 Mar 25 03:40 25 -> socket:[23150]
lrwx------. 1 named named 64 Mar 25 03:40 3 -> socket:[23104]
lr-x------. 1 named named 64 Mar 25 03:40 4 -> /var/lib/sss/mc/initgroups
lrwx------. 1 named named 64 Mar 25 03:40 5 -> socket:[23109]
lrwx------. 1 named named 64 Mar 25 03:40 512 -> socket:[23140]
lrwx------. 1 named named 64 Mar 25 03:40 513 -> socket:[23143]
lrwx------. 1 named named 64 Mar 25 03:40 514 -> socket:[23145]
lrwx------. 1 named named 64 Mar 25 03:40 6 -> /dev/null
lr-x------. 1 named named 64 Mar 25 03:40 7 -> pipe:[23118]
l-wx------. 1 named named 64 Mar 25 03:40 9 -> pipe:[23118]lsof -p 1439|grep socket
named 1439 named 3u unix 0xffff996433a0e600 0t0 23104 socket
named 1439 named 5u unix 0xffff996433a0ea40 0t0 23109 socket

why in lsof i see less soclet that in ls -l /proc/?