Here is a list of all files with brief descriptions:

[detail level 1234]

fehQlibs-28
include
alloc.h
base64.h
buffer.h
byte.h
case.h
cdbmake.h
cdbread.h
close.h
constmap.h
direntry.h
dnsresolv.h
env.h
error.h
exit.h	Convenience header
fd.h
fifo.h
fmt.h	Conversion function declarations
genalloc.h
getln.h
getoptb.h
iopause.h
ip.h
lock.h
logmsg.h
ndelay.h
open.h
pathexec.h
prot.h
readclose.h
readwrite.h
rename.h
scan.h
seek.h
select.h
sig.h
socket_if.h
str.h
stralloc.h
tai.h
taia.h
timeout.h
timeoutconn.h
uint_t.h	Additional types and pack routines
wait.h
src
dnsstub
dns_cname.c	DNS cname lookup
dns_dfd.c	Domain name qualification (domain from dot)
dns_domain.c	Domain qualification
dns_dtda.c	Domain to dot append
dns_ip.c	DNS IP query
dns_ipq.c	DNS hostname qualification for ipv4 and ipv6
dns_mx.c	Dns MX query
dns_name.c	DNS name query (ptr)
dns_nd.c	DNS domain name for ip (wire format)
dns_packet.c	DNS low level packet routine
dns_random.c	Random use of DNS resolvers given their IP
dns_rcip.c	DNS receive for query
dns_rcrw.c	DNS receive rewrite
dns_resolve.c	High-level DNS resolve function
dns_sortip.c	Random sort of DNS servers per IP
dns_transmit.c	DNS query function
dns_txt.c	DNS text query (txt)
alloc.c	Generic allocation of heap memory
base64.c	Base64 en+decoding of strings
buffer.c	Input/output routines
byte.c	Byte manipulation functions
case.c	String comparison and helper functions; case insensitive
cdbmake.c	Constant data base (cdb) generation
cdbread.c	Read entries from a cdb
constmap.c	Constant hash table
env.c	Setting up environment after fork
errstr.c	Error output to log for different conditions and OS
errtmp.c
fd.c	File descriptor manipulation
fmt.c	Formating differnt inputs format for output printing
getln.c	Evaluating tokenized input arguments
getoptb.c	'getopt' version w/o stdlib
iopause.c	Stateful reading from net
ip4.c	Handling of IPv4 addresses
ip6.c	Handling of IPv6 addresses
lock.c	Locking of resources
logmsg.c	Unified system and error message handling
ndelay.c	Delaying of IO operations
open.c	Open a file
pathexec.c	Populate environment after fork
prot.c	Setting up uid an gid for OS (short group was for ancient solaris)
readclose.c	This is the successor of the older 'slurpclose.c' file
scan.c	Scanning/conversion of strings to different variable types _Generic scan_dnum and scan_xnum available
seek.c	Seek in an open file descritor
sig.c	Signal handling functions
socket_bind.c	Binding a socket to a local resource
socket_connect.c	Connection to remote IP host
socket_if.c	Interface handling for LLU
socket_info.c	Querying local and remote info for socket
socket_recv.c	Setup receiving socket
socket_send.c	Setup sending socket
socket_setup.c	Setup listening socket
socket_tcp.c	Setup TCP stream socket
socket_udp.c	Setup a UDP message socket
str.c	String handling functions
stralloc.c	Genious dynamic string handling
tai.c	'temps atomic' time handling
taia.c	'tai' attosecond time handling
timeout.c	Read/write timeout handling
timeoutconn.c	Socket read/write timeout handling; return code of iopause considered
uint128p.c	Packing/unpacking 128 bit integer to/from char string
uint16p.c	Packing/unpacking 16 bit integer to/from char string
uint32p.c	Packing/unpacking 32 bit integer to/from char string
uint64p.c	Packing/unpacking 64 bit integer to/from char string
uint8p.c	Packing/unpacking 8 bit int to/from char string
wait.c	Wait for forked processes