02-14-2008
Here's an example of dumping the symbols from an object file (hello world in foo.c -> foo.o):
me@mine:~$ objdump -t foo.o
foo.o: file format elf32-i386
SYMBOL TABLE:
00000000 l df *ABS* 00000000 foo.c
00000000 l d .text 00000000 .text
00000000 l d .data 00000000 .data
00000000 l d .bss 00000000 .bss
00000000 l d .rodata 00000000 .rodata
00000000 l d .note.GNU-stack 00000000 .note.GNU-stack
00000000 l d .comment 00000000 .comment
00000000 g F .text 00000026 main
00000000 *UND* 00000000 puts
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LEARN ABOUT CENTOS
ipsec_klipsdebug
IPSEC_KLIPSDEBUG(5) [FIXME: manual] IPSEC_KLIPSDEBUG(5)
NAME
ipsec_klipsdebug - list KLIPS (kernel IPSEC support) debug features and level
SYNOPSIS
ipsec klipsdebug
cat/proc/net/ipsec_klipsdebug
DESCRIPTION
/proc/net/ipsec_klipsdebug lists flags that control various parts of the debugging output of KLIPS and MAST, two of the IPsec stacks
supported by Libreswan. At this point it is a read-only file.
A table entry consists of:
+
a KLIPS debug variable
+
a '=' separator for visual and automated parsing between the variable name and its current value
+
hexadecimal bitmap of variable's flags.
The variable names roughly describe the scope of the debugging variable. Currently, no flags are documented or individually accessible yet
except tunnel-xmit.
The variable names are:
tunnel
tunnelling code
netlink
userspace communication code (obsolete)
xform
transform selection and manipulation code
eroute
eroute table manipulation code
spi
SA table manipulation code
radij
radij tree manipulation code
esp
encryptions transforms code
ah
authentication transforms code
rcv
receive code
ipcomp
ip compression transforms code
verbose
give even more information, beware this will probably trample the 4k kernel printk buffer giving inaccurate output
All KLIPS debug output appears as kernel.info messages to syslogd(8). Most systems are set up to log these messages to /var/log/messages.
EXAMPLES
debug_tunnel=00000010.
debug_netlink=00000000.
debug_xform=00000000.
debug_eroute=00000000.
debug_spi=00000000.
debug_radij=00000000.
debug_esp=00000000.
debug_ah=00000000.
debug_rcv=00000000.
debug_pfkey=ffffffff.
means that one tunnel flag has been set (tunnel-xmit), full pfkey sockets debugging has been set and everything else is not set.
FILES
/proc/net/ipsec_klipsdebug, /usr/local/bin/ipsec
SEE ALSO
ipsec(8), ipsec_manual(8), ipsec_tncfg(8), ipsec_eroute(8), ipsec_spi(8), ipsec_spigrp(8), ipsec_klipsdebug(5), ipsec_version(5),
ipsec_pf_key(5)
HISTORY
Written for the Linux FreeS/WAN project <http://www.freeswan.org/> by Richard Guy Briggs.
[FIXME: source] 10/06/2010 IPSEC_KLIPSDEBUG(5)