images/100krandom
images/10klines
images/initrd
+images/initrd-x86_64.img
+images/initrd-x86_64.img.gz
images/test.sqsh
initramfs
initramfs.timestamp
*.o
ocaml/bindtests
ocaml/bindtests.ml
+ocaml/dllmlguestfs.so
ocaml/examples/lvs
ocaml/guestfs_c_actions.c
ocaml/guestfs.ml
ruby/bindtests.rb
ruby/ext/guestfs/extconf.h
ruby/ext/guestfs/_guestfs.c
+ruby/ext/guestfs/_guestfs.so
ruby/ext/guestfs/mkmf.log
ruby/Rakefile
-*.so
src/guestfs-actions.c
src/guestfs-actions.h
src/guestfs-bindtests.c
src/guestfs_protocol.h
src/guestfs_protocol.x
src/guestfs-structs.h
+src/.libs/libguestfs.so
src/.pod2text.data
src/stamp-generator
stamp-h1
helloworld.tar \
helloworld.tar.gz \
mbr-ext2-empty.img.gz \
- empty known-1 known-2 known-3
+ empty known-1 known-2 known-3 \
+ bin-i586-dynamic \
+ bin-sparc-dynamic \
+ bin-win32.exe \
+ bin-win64.exe \
+ bin-x86_64-dynamic \
+ lib-i586.so \
+ lib-sparc.so \
+ lib-win32.dll \
+ lib-win64.dll \
+ lib-x86_64.so
+
noinst_DATA = test.sqsh
$(srcdir)/empty \
$(srcdir)/known-1 \
$(srcdir)/known-2 \
- $(srcdir)/known-3
+ $(srcdir)/known-3 \
+ $(srcdir)/bin-i586-dynamic \
+ $(srcdir)/bin-sparc-dynamic \
+ $(srcdir)/bin-win32.exe \
+ $(srcdir)/bin-win64.exe \
+ $(srcdir)/bin-x86_64-dynamic \
+ $(srcdir)/lib-i586.so \
+ $(srcdir)/lib-sparc.so \
+ $(srcdir)/lib-win32.dll \
+ $(srcdir)/lib-win64.dll \
+ $(srcdir)/lib-x86_64.so
squash_files_build = \
$(builddir)/100kallzeroes \
$(builddir)/100kallspaces \
$(builddir)/100krandom \
$(builddir)/10klines \
- $(builddir)/initrd
+ $(builddir)/initrd \
+ $(builddir)/initrd-x86_64.img \
+ $(builddir)/initrd-x86_64.img.gz
squash_files = $(squash_files_src) $(squash_files_build)
rm -f $@ $@-t
for f in $^; do echo $$f; done | cpio -o -H newc | gzip --best > $@-t
mv $@-t $@
+
+# Create a dummy initrd with a single file called 'bin/nash' which
+# is used to test the Sys::Guestfs::Lib::file_architecture function.
+$(builddir)/initrd-x86_64.img: bin-x86_64-dynamic
+ rm -rf bin $@ $@-t
+ mkdir bin
+ cp $< bin/nash
+ echo bin/nash | cpio -o -H newc > $@-t
+ mv $@-t $@
+ rm -rf bin $@-t
+
+$(builddir)/initrd-x86_64.img.gz: initrd-x86_64.img
+ rm -f $@ $@-t
+ gzip --best -c $< > $@-t
+ mv $@-t $@
--- /dev/null
+The bin-* and lib-* files are used for testing the
+Sys::Guestfs::Lib::file_architecture API.
+
+The bin-* files are generated from empty source files (ie.
+"main(){}") on the respective architectures.
+
+The lib-* files are generated from a (really) empty source file called
+lib.c which is linked into a library using gcc -shared on the
+respective architectures.
+
+If you are concerned that these binary files "lack source" then you
+can just remove them, but you may need to patch out tests in the perl/
+directory.
return $path;
}
+=head2 file_architecture
+
+ $arch = file_architecture ($g, $path)
+
+The C<file_architecture> function lets you get the architecture for a
+particular binary or library in the guest. By "architecture" we mean
+what processor it is compiled for (eg. C<i586> or C<x86_64>).
+
+The function works on at least the following types of files:
+
+=over 4
+
+=item *
+
+many types of Un*x binary
+
+=item *
+
+many types of Un*x shared library
+
+=item *
+
+Windows Win32 and Win64 binaries
+
+=item *
+
+Windows Win32 and Win64 DLLs
+
+Win32 binaries and DLLs return C<i386>.
+
+Win64 binaries and DLLs return C<x86_64>.
+
+=item *
+
+Linux kernel modules
+
+=item *
+
+Linux new-style initrd images
+
+=item *
+
+some non-x86 Linux vmlinuz kernels
+
+=back
+
+What it can't do currently:
+
+=over 4
+
+=item *
+
+static libraries (libfoo.a)
+
+=item *
+
+Linux old-style initrd as compressed ext2 filesystem (RHEL 3)
+
+=item *
+
+x86 Linux vmlinuz kernels
+
+x86 vmlinuz images (bzImage format) consist of a mix of 16-, 32- and
+compressed code, and are horribly hard to unpack. If you want to find
+the architecture of a kernel, use the architecture of the associated
+initrd or kernel module(s) instead.
+
+=back
+
+=cut
+
+sub _elf_arch_to_canonical
+{
+ local $_ = shift;
+
+ if ($_ eq "Intel 80386") {
+ return "i386";
+ } elsif ($_ eq "Intel 80486") {
+ return "i486"; # probably not in the wild
+ } elsif ($_ eq "x86-64") {
+ return "x86_64";
+ } elsif (/SPARC32/) {
+ return "sparc";
+ } elsif (/SPARC V9/) {
+ return "sparc64";
+ } elsif ($_ eq "IA-64") {
+ return "ia64";
+ } elsif (/64.*PowerPC/) {
+ return "ppc64";
+ } elsif (/PowerPC/) {
+ return "ppc";
+ } else {
+ warn __x("returning non-canonical architecture type '{arch}'",
+ arch => $_);
+ return $_;
+ }
+}
+
+my @_initrd_binaries = ("nash", "modprobe", "sh", "bash");
+
+sub file_architecture
+{
+ local $_;
+ my $g = shift;
+ my $path = shift;
+
+ # Our basic tool is 'file' ...
+ my $file = $g->file ($path);
+
+ if ($file =~ /ELF.*(?:executable|shared object|relocatable), (.+?),/) {
+ # ELF executable or shared object. We need to convert
+ # what file(1) prints into the canonical form.
+ return _elf_arch_to_canonical ($1);
+ } elsif ($file =~ /PE32 executable/) {
+ return "i386"; # Win32 executable or DLL
+ } elsif ($file =~ /PE32\+ executable/) {
+ return "x86_64"; # Win64 executable or DLL
+ }
+
+ elsif ($file =~ /cpio archive/) {
+ # Probably an initrd.
+ my $zcat = "cat";
+ if ($file =~ /gzip/) {
+ $zcat = "zcat";
+ } elsif ($file =~ /bzip2/) {
+ $zcat = "bzcat";
+ }
+
+ # Download and unpack it to find a binary file.
+ my $dir = tempdir (CLEANUP => 1);
+ $g->download ($path, "$dir/initrd");
+
+ my $bins = join " ", map { "bin/$_" } @_initrd_binaries;
+ my $cmd = "cd $dir && $zcat initrd | cpio -id $bins";
+ my $r = system ($cmd);
+ die __x("cpio command failed: {error}", error => $?)
+ unless $r == 0;
+
+ foreach my $bin (@_initrd_binaries) {
+ if (-f "$dir/bin/$bin") {
+ open PIPE, "file $dir/bin/$bin |";
+ local $/ = undef;
+ $_ = <PIPE>;
+ if (/ELF.*executable, (.+?),/) {
+ return _elf_arch_to_canonical ($1);
+ }
+ }
+ }
+
+ die __x("file_architecture: no known binaries found in initrd image: {path}",
+ path => $path);
+ }
+
+ die __x("file_architecture: unknown architecture: {path}",
+ path => $path);
+}
+
=head1 OPERATING SYSTEM INSPECTION FUNCTIONS
The functions in this section can be used to inspect the operating
$g->umount_all ();
The C<inspect_in_detail> function inspects the mounted operating
-system for installed applications, installed kernels, kernel modules
-and more.
+system for installed applications, installed kernels, kernel modules,
+system architecture, and more.
It adds extra keys to the existing C<%os> hash reflecting what it
finds. These extra keys are:
--- /dev/null
+# libguestfs Perl bindings -*- perl -*-
+# Copyright (C) 2009 Red Hat Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+use strict;
+use warnings;
+use Test::More tests => 1;
+
+use Sys::Guestfs;
+use Sys::Guestfs::Lib;
+
+# Just check Lib can be loaded.
+ok (1);
--- /dev/null
+# libguestfs Perl bindings -*- perl -*-
+# Copyright (C) 2009 Red Hat Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+use strict;
+use warnings;
+use Test::More tests => 17;
+
+use Sys::Guestfs;
+use Sys::Guestfs::Lib;
+
+my $h = Sys::Guestfs->new ();
+ok ($h);
+
+$h->add_drive_ro ("../images/test.sqsh");
+ok (1);
+
+$h->launch ();
+ok (1);
+$h->wait_ready ();
+ok (1);
+
+$h->mount_vfs ("ro", "squashfs", "/dev/sda", "/");
+ok (1);
+
+is (Sys::Guestfs::Lib::file_architecture ($h, "/bin-i586-dynamic"),
+ "i386");
+is (Sys::Guestfs::Lib::file_architecture ($h, "/bin-sparc-dynamic"),
+ "sparc");
+is (Sys::Guestfs::Lib::file_architecture ($h, "/bin-win32.exe"),
+ "i386");
+is (Sys::Guestfs::Lib::file_architecture ($h, "/bin-win64.exe"),
+ "x86_64");
+is (Sys::Guestfs::Lib::file_architecture ($h, "/bin-x86_64-dynamic"),
+ "x86_64");
+is (Sys::Guestfs::Lib::file_architecture ($h, "/lib-i586.so"),
+ "i386");
+is (Sys::Guestfs::Lib::file_architecture ($h, "/lib-sparc.so"),
+ "sparc");
+is (Sys::Guestfs::Lib::file_architecture ($h, "/lib-win32.dll"),
+ "i386");
+is (Sys::Guestfs::Lib::file_architecture ($h, "/lib-win64.dll"),
+ "x86_64");
+is (Sys::Guestfs::Lib::file_architecture ($h, "/lib-x86_64.so"),
+ "x86_64");
+is (Sys::Guestfs::Lib::file_architecture ($h, "/initrd-x86_64.img"),
+ "x86_64");
+is (Sys::Guestfs::Lib::file_architecture ($h, "/initrd-x86_64.img.gz"),
+ "x86_64");
git.annexia.org / libguestfs.git / commitdiff