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#! /usr/bin/ksh
# Current Maintainer: Tim Mooney <mooney@golem.phys.ndsu.NoDak.edu>
#
# Original Author: Ralph Goers(rgoer@Candle.Com)
# Borrowed heavily from H10 version created by Tim Mooney.
# This file is distributed under the terms of the GNU Public License
#
# find-provides is part of RPM, the RedHat Package Manager. find-provides
# reads a list of full pathnames (in a package) on stdin, and outputs all
# shared libraries provided by (contained in) the package.
#
# On AIX, use `dump -o' to find what the library provides, if anything.
#
#
# Ralph's comments:
#
# Executables are skipped because, by convention, shared libraries
# which are not dynamically loaded are packaged as archives. Also,
# it is impossible to tell the difference between an executable
# program and a dynamically loaded shared library.
#
# Because archives can contain any number of things, including
# apparently, multiple shared libraries, dependencies in archives
# will be specified as file[member]. Any member in an archive which
# has a loader section will be listed as provided.
#
# Tim's (subsequent) comments:
#
# Based on discussions on the rpm-list in mid-March of 2000, I've modified
# the copy of find-provides that Ralph provided me to use `dump -o' instead
# of `dump -H', and I've followed Brandon S. Allbery's suggestions and modified
# the awk script to look for a modtype of `RE', which is what constitutes a
# shared member of a library. Just like everything else on AIX, libraries are
# weird. :-|
#
# I've followed Ralph's convention of generating provides in the form of
# `filebasename(member-object)' *if* there is a member object, or just
# `filebasename' if there isn't (such as in the case of certain perl modules,
# locally built shared libraries, etc.).
#
# Example dump output:
#
#$dump -o /usr/lpp/X11/lib/R6/libX11.a
#
#/usr/lpp/X11/lib/R6/libX11.a[shr4.o]:
#
# ***Object Module Header***
## Sections Symbol Ptr # Symbols Opt Hdr Len Flags
# 4 0x00126c28 14557 72 0x3002
#Timestamp = 920377624
#Magic = 0x1df
#
# ***Optional Header***
#Tsize Dsize Bsize Tstart Dstart
#0x000bcc20 0x00024bd4 0x00000e0c 0x00000000 0x00000000
#
#SNloader SNentry SNtext SNtoc SNdata
#0x0004 0x0000 0x0001 0x0002 0x0002
#
#TXTalign DATAalign TOC vstamp entry
#0x0005 0x0003 0x00023d74 0x0001 0xffffffff
#
#maxSTACK maxDATA SNbss magic modtype
#0x00000000 0x00000000 0x0003 0x010b RE
#
#/usr/lpp/X11/lib/R6/libX11.a[shr4net.o]:
#
# ***Object Module Header***
## Sections Symbol Ptr # Symbols Opt Hdr Len Flags
# 7 0x000006fb 22 72 0x3002
#Timestamp = 774732998
#Magic = 0x1df
#
# ***Optional Header***
#Tsize Dsize Bsize Tstart Dstart
#0x00000084 0x00000088 0x00000000 0x00000200 0x00000000
#
#SNloader SNentry SNtext SNtoc SNdata
#0x0007 0x0000 0x0002 0x0004 0x0004
#
#TXTalign DATAalign TOC vstamp entry
#0x0002 0x0003 0x00000080 0x0001 0xffffffff
#
#maxSTACK maxDATA SNbss magic modtype
#0x00000000 0x00000000 0x0005 0x010b RE
PATH=/usr/bin:/usr/ccs/bin
export PATH
#
# TVM: Marc Stephenson (marc@austin.ibm.com) points out we run things
# like `file', et. al. and expect the output to be what we see in the
# C/POSIX locale. Make sure it is so.
#
LANG=C
export LANG
#
# TVM: Because AIX libraries don't have the equivalent of a SONAME, if you do
#
# ln -s /usr/lib/libc.a /tmp/libmy_libc_link.a
#
# and then link your program with `-L/tmp -lmy_libc_link', that's the name
# that will be recorded as the BASE in the Import File Strings area.
# This means we need to include "symbolic link" in the list of files to check
# out.
#
filelist=`sed "s/['\"]/\\\&/g" | xargs file \
| grep -E 'archive|executable|symbolic link' | cut -d: -f1`
for f in $filelist
do
#
# Uncomment the next line for some additional debugging info:
#echo "Checking $f"
dump -o $f 2>/dev/null | awk '
# TVM: be careful to not use any single quotes, even in comments,
# since this entire awk script is enclosed in single quotes.
BEGIN {
FS = " ";
RS = "\n";
# our flag to indicate we found a filename[membername] or
# filename.
found_file_or_member = 0
# our flag to indicate we found the modtype tag. If so,
# we want to look for RE on the next line.
found_modtype = 0
#
# number of times gsub substituted, used twice below
nsub = 0
}
# Uncomment the next line for some debugging info.
# { print NR , ":", $0 }
found_modtype == 1 && found_file_or_member == 1 {
if ( $0 ~ / RE/ ) {
# we have seen a filename, we have seen a modtype line, and now
# we know that the modtype is RE. Print out the member name.
#
# Note that member names generally look like foo[bar.o], and
# since the RPM standard has become to use parens, we will
# translate the [ and ] into ( and ) in the output stream.
# awk on AIX 4 has sub() and gsub(), so we can use them to do
# it. If this script is adapted for use on some other platform
# make sure that awk on that platform has sub/gsub. If not,
# you will need to postprocess the output stream (probably before
# the sort -u) with tr or sed.
nsub = gsub(/\[/, "(", member)
if ( nsub > 1 ) {
print "substituted too many times for [:", member | "cat 1>&2"
}
nsub = gsub(/\]/, ")", member)
if ( nsub > 1 ) {
print "substituted too many times for ]:", member | "cat 1>&2"
}
print member
}
# In any case, reset our flags to zero, to indicate we are done
# with this member, so we are ready to handle additional members
# if needed.
found_file_or_member = 0
found_modtype = 0
}
found_file_or_member == 1 && /magic *modtype/ {
# we have seen a filename, and now we have seen the modtype
# line. Set the found_modtype flag. The next line of input
# will be caught by the rule above, and we will print out
# the member if the modtype is RE.
found_modtype = 1
}
/:$/ {
numfields = split($0,fields, "/")
# chop off the trailing colon
fieldlen = length(fields[numfields])-1
member= substr(fields[numfields], 1, fieldlen)
# Set the flat to indicate we found a file or a file(member).
found_file_or_member = 1
}
' # end of awk
done | sort -u
#comment out the previous line and uncomment the next line when debugging
#done
|
