175 lines
4.6 KiB
Bash
175 lines
4.6 KiB
Bash
#! /usr/bin/ksh
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# Original Author: Tim Mooney <mooney@golem.phys.ndsu.NoDak.edu>
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#
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# This file is distributed under the terms of the GNU Public License
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#
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# find-provides is part of RPM, the Red Hat Package Manager. find-provides
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# reads a list of full pathnames (in a package) on stdin, and outputs all
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# shared libraries provided by (contained in) the package.
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#
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#
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# On HP-UX, use `chatr' to find what libraries a package provides
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#
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# Example chatr output:
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#
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#$chatr /usr/lib/libc.sl
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#
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#/usr/lib/libc.sl:
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# shared library
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# shared library dynamic path search:
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# SHLIB_PATH disabled second
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# embedded path disabled first Not Defined
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# internal name:
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# libc.1
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# shared library list:
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# dynamic /usr/lib/libdld.1
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# static branch prediction disabled
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# kernel assisted branch predictionenabled
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# lazy swap allocationdisabled
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# text segment lockingdisabled
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# data segment lockingdisabled
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# data page size: 4K
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# instruction page size: 4K
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#
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#
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# Implementation notes: some of the system libraries are built without an
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# `internal name' (HP-UX's equivalent to a SONAME), so I need to track what
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# chatr outputs as its first line. We'll use the basename of that line in
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# the event of no internal name.
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#
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PATH=/usr/bin:/usr/sbin:/usr/ccs/bin
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export PATH
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#
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# TVM: Marc Stephenson (marc@austin.ibm.com) points out we run things
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# like `file', et. al. and expect the output to be what we see in the
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# C/POSIX locale. Make sure it is so.
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#
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LANG=C
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export LANG
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#
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# TVM: use `while read ...' instead of `for f in ...', because there may
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# be too many files to stuff into one shell variable.
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#
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IFS=""
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while read f
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do
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# It's possible that I should be testing to make sure that the file
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# we're trying isn't a symlink, and skipping it if it is, because of
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# the possible odd situation where we could have a link to a library
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# with no internal name. This would need more investigation, though.
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chatr $f 2>/dev/null \
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| awk '
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BEGIN {
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FS = " ";
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RS = "\n";
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# This flag signfies that we have seen the internal name:
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# marker. Once we see that, we set the flag to 1. The next
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# line we read should contain the library internal name, the
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# SOM equivalent of an soname. At that point we set the flag
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# found_internal_name to 1 and exit
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# the main body of the awk script, going through the END
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in_internal_name = 0;
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#
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# We have seen the internal name: section (yet)?
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#
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found_internal_name = 0;
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#
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# assume it is a shared library, until record 2 proves us wrong.
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#
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isa_shared_library = 1;
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}
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# Uncomment the next line for some debugging info.
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#{ print NR , ":", $0 }
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#
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# save the first line in case there is no internal name built
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# into this object.
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#
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NR == 1 {
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my_name = $0
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opened_something = 1;
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}
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#
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# Check the second line (record). Clear the flag if it is not a
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# shared library.
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#
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NR == 2 && $0 !~ /^[ ]+shared library[ ]*$/ {
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# It is not a shared library. Bow out early
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isa_shared_library = 0;
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exit
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}
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in_internal_name == 1 {
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# We found the library internal name. If it does not contain
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# a path, print it. At least a couple of the system libraries
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# have a full path as the internal name (this is probably a bug).
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if ( $0 ~ /\// ) {
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numfields = split($0, internal_name, "/")
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print internal_name[numfields]
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} else {
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print $1
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}
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#
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# Set a flag for the EXIT section, to indicate that we found
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# an internal name
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#
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found_internal_name = 1;
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in_internal_name = 0
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exit
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}
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#
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# we have hit the internal name section. Set the flag. The next
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# line should be what we are looking for.
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#
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/^ +internal name: *$/ {
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in_internal_name = 1
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}
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END {
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# Uncomment the next line for debugging info
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#{ print "END: NR: ", NR }
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if ( (isa_shared_library == 0) || (NR < 2) ) {
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# both of these indicate error conditions, for which we
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# should not generate any output.
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exit;
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} else {
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if (found_internal_name == 1) {
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exit;
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} else {
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#
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# chop the : off the end of the line
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#
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colon = index(my_name, ":")
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colon = colon - 1
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temp = substr(my_name, 1, colon)
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#
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# get the basename
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#
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numfields = split(temp, basename, "/")
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# Uncomment the next line for debugging info
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#print "In END:", numfields, ":", temp
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print basename[numfields]
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exit
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}
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}
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}
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' # end of awk
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done | sort -u
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#comment out the previous line and uncomment the next line when debugging
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#done
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