Date: Tue, 02 Jan 2001 12:21:46 -0800 From: Darryl Okahata <darrylo@soco.agilent.com> To: freebsd-stable@FreeBSD.ORG Subject: tcp wrappers, inetd, & setproctitle() ??? Message-ID: <200101022021.MAA16583@mina.soco.agilent.com>
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--Multipart_Tue_Jan__2_12:21:45_2001-1
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Hi,
Are there any known problems with tcp wrappers in FreeBSD
4.2-RELEASE? (Yes, I've looked through the archives and dejanews and
can't find anything.)
If tcp wrappers are enabled, I'm having a problem where I can't
connect to a 4.2-RELEASE system via telnet (or any other inetd-managed
service, from the local or a remote system (I have verified that
/etc/hosts.{allow,deny} are correct). Strangely enough, syslog doesn't
show any errors or connection attempts (failed or successful), even with
maximum logging.
Being desperate, I tried ktrace'ing inetd, and it appears that,
with tcp wrapping enabled, inetd is failing to spawn child processes
(e.g., telnetd) because setproctitle() can't be found by ld-elf.so.1
(see attached inetd.ktrace file).
$ nm -D /usr/sbin/inetd | grep setproc
U setproctitle
$ ldd /usr/sbin/inetd
/usr/sbin/inetd:
libutil.so.3 => /usr/lib/libutil.so.3 (0x2806b000)
libwrap.so.3 => /usr/lib/libwrap.so.3 (0x28074000)
libipsec.so.1 => /usr/lib/libipsec.so.1 (0x2807c000)
libc.so.4 => /usr/lib/libc.so.4 (0x28082000)
$ nm -D /usr/lib/libutil.so.3 | grep setproc
$ nm -D /usr/lib/libwrap.so.3 | grep setproc
$ nm -D /usr/lib/libipsec.so.1 | grep setproc
$ nm -D /usr/lib/libc.so.4 | grep setproc
I haven't done a buildworld (I upgraded via the 4.2-RELEASE CDROM), but
it seems that setproctitle() should be in libc, but it isn't.
Any comments?
--
Darryl Okahata
darrylo@soco.agilent.com
DISCLAIMER: this message is the author's personal opinion and does not
constitute the support, opinion, or policy of Agilent Technologies, or
of the little green men that have been following him all day.
--Multipart_Tue_Jan__2_12:21:45_2001-1
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Content-Disposition: attachment; filename="inetd.ktrace"
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11746 inetd RET select 1
11746 inetd CALL ioctl(0x7,FIONBIO,0xbfbff5c4)
11746 inetd RET ioctl 0
11746 inetd CALL accept(0x7,0,0)
11746 inetd RET accept 13/0xd
11746 inetd CALL ioctl(0x7,FIONBIO,0xbfbff5c4)
11746 inetd RET ioctl 0
11746 inetd CALL ioctl(0xd,FIONBIO,0xbfbff5c4)
11746 inetd RET ioctl 0
11746 inetd CALL sigprocmask(0x1,0xbfbff570,0xbfbff560)
11746 inetd RET sigprocmask 0
11746 inetd CALL gettimeofday(0x805c3c8,0)
11746 inetd RET gettimeofday 0
11746 inetd CALL fork
11746 inetd RET fork 11753/0x2de9
11746 inetd CALL sigprocmask(0x3,0xbfbff570,0xbfbff560)
11746 inetd RET sigprocmask 0
11746 inetd CALL close(0xd)
11746 inetd RET close 0
11746 inetd CALL select(0xd,0xbfbff604,0,0,0)
11753 inetd RET fork 0
11753 inetd CALL sigprocmask(0x3,0xbfbff570,0xbfbff560)
11753 inetd RET sigprocmask 0
11753 inetd CALL close(0xc)
11753 inetd RET close 0
11753 inetd CALL close(0xb)
11753 inetd RET close 0
11753 inetd CALL close(0xa)
11753 inetd RET close 0
11753 inetd CALL close(0x9)
11753 inetd RET close 0
11753 inetd CALL close(0x8)
11753 inetd RET close 0
11753 inetd CALL close(0x7)
11753 inetd RET close 0
11753 inetd CALL close(0x6)
11753 inetd RET close 0
11753 inetd CALL close(0x5)
11753 inetd RET close 0
11753 inetd CALL close(0x4)
11753 inetd RET close 0
11753 inetd CALL close(0x3)
11753 inetd RET close 0
11753 inetd CALL sigaction(0xe,0xbfbffb40,0)
11753 inetd RET sigaction 0
11753 inetd CALL sigaction(0x14,0xbfbffb28,0)
11753 inetd RET sigaction 0
11753 inetd CALL sigaction(0x1,0xbfbffb10,0)
11753 inetd RET sigaction 0
11753 inetd CALL getpeername(0xd,0xbfbff500,0xbfbff47c)
11753 inetd RET getpeername 0
11753 inetd CALL write(0x2,0xbfbfec84,0x1a)
11753 inetd GIO fd 2 wrote 26 bytes
"/usr/libexec/ld-elf.so.1: "
11753 inetd RET write 26/0x1a
11753 inetd CALL write(0x2,0xbfbfecb4,0x26)
11753 inetd GIO fd 2 wrote 38 bytes
"inetd: Undefined symbol "setproctitle""
11753 inetd RET write 38/0x26
11753 inetd CALL write(0x2,0xbfbfec84,0x1)
11753 inetd GIO fd 2 wrote 1 byte
"
"
11753 inetd RET write 1
11753 inetd CALL exit(0x1)
11746 inetd PSIG SIGCHLD caught handler=3D0x804abbc mask=3D0x0 code=3D=
0x0
11746 inetd RET select -1 errno 4 Interrupted system call
11746 inetd CALL write(0xc,0xbfbff3b3,0x1)
11746 inetd GIO fd 12 wrote 1 byte
"C"
11746 inetd RET write 1
11746 inetd CALL sigreturn(0xbfbff3f0)
11746 inetd RET sigreturn JUSTRETURN
11746 inetd CALL select(0xd,0xbfbff604,0,0,0)
11746 inetd RET select 1
11746 inetd CALL ioctl(0x3,FIONREAD,0xbfbff5cc)
11746 inetd RET ioctl 0
11746 inetd CALL read(0x3,0xbfbff5cb,0x1)
11746 inetd GIO fd 3 read 1 byte
"C"
11746 inetd RET read 1
11746 inetd CALL wait4(0xffffffff,0xbfbff58c,0x1,0)
11746 inetd RET wait4 11753/0x2de9
11746 inetd CALL wait4(0xffffffff,0xbfbff58c,0x1,0)
11746 inetd RET wait4 -1 errno 10 No child processes
11746 inetd CALL select(0xd,0xbfbff604,0,0,0)
--Multipart_Tue_Jan__2_12:21:45_2001-1--
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