Well....do some experiment yourself....and let us know the results....
First( mine is FC5):
/mnt/hd0>gdb /lib/libcap.so
(gdb) info functions
All defined functions:
Non-debugging symbols:
0x002a78d8 _init
0x002a7900 cap_init@plt
0x002a7960 __cxa_finalize@plt
0x002a7990 _libcap_strdup@plt
0x002a79a0 cap_free@plt
0x002a79d0 __gmon_start__@plt
0x002a7abc cap_init
0x002a7b46 _libcap_strdup
0x002a7be7 cap_dup
0x002a7c6a cap_free
0x002a7d68 cap_get_proc
0x002a7db6 cap_set_proc
0x002a7e21 capgetp
0x002a7e9f capsetp
0x002a7f20 cap_size
0x002a7f2a cap_copy_ext
0x002a807e cap_copy_int
0x002a8230 cap_get_flag
0x002a82d1 cap_set_flag
0x002a8419 cap_clear
0x002a8675 cap_from_text
0x002a8ba6 cap_to_text
0x002a8fb4 _fini
(gdb)
objdump -T /lib/libcap.so |grep "F "|grep -v UND
Notice the 2nd grep is F followed by a space. At first I thought it
was "F..text"....but then I was wrong, because comparing the above
(gdb) output and that of objdump -- _init is missing, because _init is
in the .init section. And all dyn library need to implement a _init
function. So not necessary functions are always in .text section.
and the 2nd grep is UND is needed - it just means exclude all the
functions symbol that point to other libraries (noted by the @plt
signature).
And most importantly, the output of the above command line matches in
number with that of gdb --> after all the @plt from gdb output is
manually removed.
And the following is from HP-UX:
To see the functions exported from a shared library:
$ elfdump -s -n .dynsym libsubs.so | grep 'FUNC GLOB' | grep -v UNDEF
To see the global data items exported from a shared library:
$ elfdump -s -n .dynsym libsubs.so | grep 'OBJT GLOB' | grep -v UNDEF
--
To unsubscribe from this list: send an email with
"unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx
Please read the FAQ at http://kernelnewbies.org/FAQ
