Patch-ID# 100257-02
Keywords: ld.so, ldd, ldconfig, cache, dlopen, dlclose, descriptors, tty
Synopsis: ld.so;4.1.1: jumbo patch for ld.so, ldd, and ldconfig
Date: 17-Apr-91
 
SunOS release: 4.1.1
 
Unbundled Product: 
 
Unbundled Release:
 
Topic: ld.so, ldd, and ldconfig fixes included here
 
BugId's fixed with this patch: 1033086 1043300 1046379 1052428 1045194 1032208
                               1032209 1043082

Architectures for which this patch is available: sun3[x], sun4[c]

Patches which may conflict with this patch:

Obsoleted by: svr4

Problem Description:
	
 1033086: Calling dlopen() on a file with BSS kills your application.
        1043300: dlclose prevents access to functions even after further dlopen
        1046379: cannot call a function in a [.so] from a function in another
        1052428: ld.so usage of -L options confusing, leads to security probs
        1045194: dlsym returns bad address for uninitialized global variable
 
        ldd 1.6 contains fixes for these bugs:
 
        1032208: ldd doesn't write file names if standard output is not a tty
        1032209: ldd runs out of file descriptors
 
        And, ldconfig 1.10 contains fixes for this bug:
 
        1043082: Bogus first arg to 'ldconfig' kills dynamic linking


	For brevity, and because this patch relates exclusively to ld and its support 
	programs, this patch contains fixes to 3 ld "parts"; ld.so (the dynamic linker),
	ldd (dynamic dependencies lister), and ldconfig (dynamic path cache tool).

	Unpacking this one patch will provide binary executables for ld.so, ldd, and
	ldconfig.  The result will be a hierarchy that contains both SPARC and M68K 
	versions of the referenced programs.

	The installation instructions below will address, seperately, the install
	sequence for each of the 3 patches.


INSTALL:

   For ldd:

	0) become 'root'
	1) mv /bin/ldd /bin/ldd.FCS
	2) cp -p sun{3,4}/ldd /bin/ldd
	4) <verify owner and permissions as the same as the original>

   For ldconfig:

	0) become 'root'
	1) mv /usr/etc/ldconfig /usr/etc/ldconfig.FCS
	2) cp -p sun{3.4}/ldconfig /usr/etc
	4) <verify owner and permissions as the same as the original>

   For ld.so:

!!NOTE!!: The correct way to install a new ld.so in a system is as follows:

	0) become 'root'
	1) cp sun{3.4}/ld.so /usr/lib/ld.so+
	3) cd /usr/lib
	4) mv ld.so ld.so-; mv ld.so+ ld.so
	5) date

If the "date" command does not run correctly, then IMMEDIATELY put back
the old ld.so:

	6) mv ld.so- ld.so

NEVER "cp" or otherwise copy over an installed ld.so.