Commit Graph

609 Commits

Author SHA1 Message Date
John Polstra
bfb1ef6058 Change many asserts into normal errors. They were all for conditions
caused by invalid shared objects rather than by internal errors.

Enable format string mismatch checking for _rtld_error().
1999-07-18 00:02:19 +00:00
John Polstra
cb435fa919 Change the symbol used to find the end of an object's address space
from "end" to "_end".  The former does not exist in most shared
libraries.  This fixes problems in dladdr() and dlsym(RTLD_NEXT, ...).
1999-07-14 04:09:11 +00:00
Mike Pritchard
2dd1e9f4e1 Fix a couple of typos.
PR:		12610
Submitted by:	Seth <seth@freebie.dp.ny.frb.org>
1999-07-12 18:37:48 +00:00
Doug Rabson
e85422ad1d Add code to 'handle' R_ALPHA_NONE relocations by ignoring them. 1999-07-12 07:54:45 +00:00
John Polstra
18cd0551a7 Add a MAINTAINER line naming myself. We control the vertical. We
control the horizontal.
1999-07-09 16:27:43 +00:00
John Polstra
8d05e8c453 Fix bug: if a dlopen() failed (e.g., because of undefined symbols),
the dynamic linker didn't clean up properly.  A subsequent dlopen()
of the same object would appear to succeed.

Another excellent fix from Max Khon.

PR:		bin/12471
Submitted by:	Max Khon <fjoe@iclub.nsu.ru>
1999-07-09 16:22:55 +00:00
John Polstra
5bf3700dae Shake hands with GDB a little bit earlier so that it is possible to
debug the init functions.

Submitted by:	dfr
1999-07-03 23:54:02 +00:00
Mike Pritchard
a206edcdb7 Update the SYNOPSIS to reflect that the -l option can be specified
more than once.

Pointed-out-by: sheldonh
1999-06-28 10:50:47 +00:00
John Polstra
d16ad2d055 Fix a reference counting problem when using dlopen(NULL, ...).
PR:		bin/12129
1999-06-25 04:50:06 +00:00
John Polstra
962fdc466a Fix a serious performance bug for large programs on the Alpha,
discovered by Hidetoshi Shimokawa.  Large programs need multiple
GOTs.  The lazy binding stub in the PLT can be reached from any of
these GOTs, but the dynamic linker only has enough information to
fix up the first GOT entry.  Thus calls through the other GOTs went
through the time-consuming lazy binding process on every call.

This fix rewrites the PLT entries themselves to bypass the lazy
binding.

Tested by Hidetoshi Shimokawa and Steve Price.

Reviewed by:	Doug Rabson <dfr@freebsd.org>
1999-06-25 02:53:59 +00:00
Peter Wemm
d050fd4212 Identify illegal switches, don't print them as '?' in the error.. 1999-05-18 05:51:09 +00:00
Bill Paul
f9d553adf5 Fix ypxfr so that it can be run from cron.
Patch submitted by: Dan Nelson <dnelson@emsphone.com>
1999-05-10 20:55:29 +00:00
Guy Helmer
e57c110bba Add missing -A option to SYNOPSIS.
PR:		docs/10771
1999-05-04 19:42:01 +00:00
Warner Losh
859663719d More egcs warning fixes:
o main returns int not void
	o use return 0 at end of main when needed
	o use braces to avoid potentially ambiguous else
	o don't default to type int (and also remove a useless register
	  modifier).

Reviewed by: obrien and chuckr
1999-04-25 22:23:38 +00:00
John Polstra
6d30b16752 Back out my change from 6 April PDT that added a new dlversion()
function.  It was an ill-considered feature.  It didn't solve the
problem I wanted it to solve.   And it added Yet Another Version
Number that would have to be maintained at every release point.
I'm nuking it now before anybody grows too fond of it.
1999-04-22 01:54:38 +00:00
John Polstra
5353bfc3b4 After relocating the main program, but before calling any of the
_init() functions, initialize the global variables "__progname" and
"environ".  This makes it possible for the _init() functions to call
things like getenv() and err().
1999-04-21 04:06:57 +00:00
John Polstra
a18cde535d The ELF specification says that the RPATH in the executable or
shared object takes precedence over LD_LIBRARY_PATH.  Make the
dynamic linker do it that way.
1999-04-09 06:42:00 +00:00
John Polstra
d5b537d01a Eliminate all machine-dependent code from the main source body and
the Makefile, and move it down into the architecture-specific
subdirectories.

Eliminate an asm() statement for the i386.

Make the dynamic linker work if it is built as an executable instead
of as a shared library.  See i386/Makefile.inc to find out how to
do it.  Note, this change is not enabled and it might never be
enabled.  But it might be useful in the future.  Building the
dynamic linker as an executable should make it start up faster,
because it won't have any relocations.  But in practice I suspect
the difference is negligible.
1999-04-09 00:28:43 +00:00
Brian Somers
d5cf830ef1 Determine the host name using an array size of
MAXHOSTNAMELEN and call trimdomain() before implementing
the -u option.

This allows local hosts of a lan with a long domain name to
appear properly in utmp by base host name (w/o domain) rather
than by IP number.
1999-04-08 21:36:27 +00:00
Brian Somers
aae211bc7e Really fix -u.... 1999-04-07 08:39:54 +00:00
Brian Somers
9e9a43bdec Ensure that things returned by gethostname() and
friends are terminated and allow for a maximum
host name length of MAXHOSTNAMELEN - 1.
Put parenthesis around sizeof args.
Make some variables static.
Fix telnetd -u (broken by my last commit)

Prompted by: bde
1999-04-07 08:27:45 +00:00
Brian Somers
d9dc7d5c7e Fix the size of rhost, don't forget to NUL terminate
it and use brackets for sizeof.
Requested by: bde
1999-04-07 06:00:22 +00:00
John Polstra
a16ed197f2 Fix a couple of typos in comments. 1999-04-07 02:48:43 +00:00
John Polstra
14f5fa0596 Add a new function dlversion() which returns the version number of
the dynamic linker in the same form as __FreeBSD_version.  This is
mainly intended for checking the dynamic linker version during a make
world.
1999-04-07 02:43:11 +00:00
Brian Somers
143b4dcdc7 Link with libutil 1999-04-06 23:40:25 +00:00
Brian Somers
32af26a501 Use realhostname() rather than various combinations of
gethostbyaddr() & gethostbyname().

Remove brokeness in ftpd for hosts of MAXHOSTNAMELEN length.
1999-04-06 23:06:00 +00:00
Brian Somers
51d8a6713f After receiving a connection and doing a reverse
lookup on the incoming IP, do a forward lookup on
the result and make sure that the IP is in the
resulting list.  If it's not, put the IP number
in utmp/wtmp instead of the rogue name.

Stolen from: rlogind
Suggested by: sef
1999-04-06 00:29:41 +00:00
John Polstra
5e4636f2b0 Resolve undefined weak references to a value of 0. This solves the
"__deregister_frame_info" problem that was seen when combining a
program linked using the old gcc with shared libraries that were
built using egcs.
1999-04-05 02:36:40 +00:00
Peter Wemm
faba5e7488 If somebody does an execv("foo", NULL) (which theoretically is an error),
avoid crashing inside rtld (since it's easy) since everything else handles
it.  Of course, if the target program checks argv[], it'll fall over.

Reviewed by:	jdp
1999-04-04 06:01:09 +00:00
Peter Wemm
610b0299af Add an 'al' (autologin username) capability to getty/gettytab. This is a
damn useful thing for using with serial consoles in clusters etc or secure
console locations.  Using a custom gettytab entry for console with
an entry like 'al=root' means that there is *always* a root login ready on
the console.  This should replace hacks like those which go with conserver
etc.  (This is a loaded gun, watch out for those feet!)

Submitted by:  "Andrew J. Korty" <ajk@purdue.edu>
1999-04-04 04:36:50 +00:00
Joerg Wunsch
53152fc9db Ignore empty usernames, and repeat the login: prompt in this case.
There's not much point in having uucpd behave differently than
login(1) for this, and now uucpd is compatible to the default chat
script of Taylor UUCP which sends a single \r at first.

While i was at it, added a few strategic ``errno = 0;''s, so at least
an `Undefined error 0' will be returned for things like a closed
connection while reading the login ID or password, as opposed to an
even more bogus thing like `No such file or directory'.
1999-03-30 10:23:35 +00:00
Nate Williams
38ccb4c214 - Commit the correct dladdr() implementation.
Reviewed by:	jdp@FreeBSD.org <This is the version he reviewed!>
1999-03-24 23:47:29 +00:00
Nate Williams
e818e307ee - Added dladdr(3) support.
Reviewed by:	jdp@FreeBSD.org
1999-03-24 23:37:35 +00:00
Brian Somers
23bc058463 Set the CPU resource limit back to infinity before exec()ing PP.
PR:	10399
1999-03-09 22:04:44 +00:00
Bill Fenner
13ca3c01ec Clean up some .Os macro uses: quotes are not needed, multiple arguments
don't really work if the first one isn't "FreeBSD", and "FreeBSD-Experimental"
isn't an OS name.
1999-02-15 08:34:14 +00:00
Nate Williams
0b8dcbe23c - Set the system immutable flag when installing ld.so to avoid people
accidentally clobbering it.

Submitted by:	numberous people on -current
1999-02-15 05:02:54 +00:00
Satoshi Asami
0e510aed5b Oops, I missed a few more /etc/nologin references yesterday. It appears
my check of the tree was incomplete.  Sorry guys.

Reported by:	Ben Smithurst <ben@scientia.demon.co.uk>
1999-01-12 14:09:23 +00:00
Peter Wemm
5328c7eb7e As previously threatened, clean up the rshd -a option and make it default
on rshd and rlogind.  However, note that:
1: rshd used to drop a connection with -a if the hostname != ip address.
   This is unneeded, because iruserok() does it's own checking.
   It was also wrong if .rhosts had an explicit IP address in it,
   connections would be dropped from that host solely because the DNS was
   mismatched even though it was explicitly intended to work by IP address.
2: rlogind and rshd check the hostname mappings by default now because that
   is what goes into the utmp/wtmp and logs.  If the hostname != ip address,
   then it uses the IP address for logging/utmp/wtmp purposes.  There isn't
   much point logging ficticious hostnames.
3: rshd -a is now accepted (but ignored) for compatability.  If you really
   want to make life miserable for people with bad reverse DNS, use tcpd in
   paranoid mode (which is questionable anyway, given DNS ttl tweaking).
1998-12-16 07:20:45 +00:00
Peter Wemm
3cc1b1bf9c Old stuff laying around: Don't use a function called getstr(), that has
nasty consequences when the system curses is ncurses as this conflicts
with a ncurses funciton and causes recursion.
1998-12-16 06:04:29 +00:00
Eivind Eklund
d284feaa7b Block for buffer overflow. 1998-12-13 21:02:28 +00:00
Matthew Dillon
3a3c0cf418 PR: bin/9031
Changed unbounded strcpy() to snprintf() to fix buffer overrun exploit
1998-12-12 20:56:53 +00:00
Bruce Evans
97aa1043ac Fixed long line in previous commit. 1998-12-03 05:45:18 +00:00
Bill Fumerola
c711c51d19 Update to correctly reflect the default values of
net.inet.ip.portrange.hifirst and net.inet.ip.portrange.hilast

PR:		docs/6745
Submitted by:	Masachika Ishizuka <ishizuka@ish.org>
1998-12-02 22:11:02 +00:00
David Greenman
45166d95d1 Added a -D option to turn on TCP_NODELAY. 1998-12-01 23:27:24 +00:00
Matthew Dillon
386794da12 Reviewed by: freebsd-current, freebsd-security
Removed getuid() root check so ntalkd can be run from a tty sandbox.
    It isn't suid root anyway, who knows why the getuid() check was even
    in there in the first place!
1998-12-01 21:12:57 +00:00
Doug Rabson
eace1a8ad9 Use the runpath of the main program for locating libraries loaded by
dlopen().

Reviewed by: jdp
1998-11-27 21:19:52 +00:00
John Polstra
4700eb95cb Find "klogin.c" in "src/lib/libpam/modules/pam_kerberosIV" instead
of in "src/usr.bin/login".  The latter instance is going away.  As
soon as ftpd is PAMized, it won't need to use klogin.c at all.
1998-11-21 02:11:16 +00:00
Dima Ruban
d3f476b1f0 Enable named-xfer and rbootd for alpha. 1998-11-10 06:50:35 +00:00
John Polstra
3f47c82a7f Fix a bug in the handling of minor version numbers. Formerly, the
rtld would accept the first shared library it found with the right
major version number, even if the minor version number was too low.
If a different version of the shared library with an adequate minor
version number appeared later in the search path, it would not be
found.

Now the rtld searches all locations first looking for a library
with a minor version that is high enough.  Only if such a library
is not found will it fall back to accepting a minor version number
that is too low.  As before, a warning comes out in that case.

This solves some problems encountered when building an older world
on a -current system.
1998-11-07 01:59:39 +00:00
David Greenman
8692ad469b Rename a function name so that it doesn't conflict with a future system call. 1998-10-30 16:17:50 +00:00