search for: guestfs_file

The existing mechanism was clunky, slow and used ~ 10 MB of local disk. Rich.

Hello, I was looking for a way to detect the installed boot loader of an image and I found this: https://github.com/arvidjaar/bootinfoscript This script will inspection a lot of things on a running system and will output a Report. The most interesting part is that it uses known Master and Volume Boot Record byte-patterns to determine the installed boot loader:

...s some sort of detection like this: # file -bsL /dev/sdb DOS/MBR boot sector; partition 1 : ID=0x83, start-CHS (0x0,32,33), end-CHS (0xce,29,63), startsector 2048, 250067632 sectors, extended partition table (last) Adding it to file means it will be available in libguestfs automatically (via 'guestfs_file' API), and means it would be generally useful to other people as well. However I'm not opposed to adding it to libguestfs if for some reason it's not possible to add this to file. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programm...

This patch adds a new function, guestfs_file_arch, which is like guestfs_file but specifically intended to determine the architecture of binaries and libraries. Usage is: guestfs_file_arch (g, "/bin/ls") ==> "x86_64" (or whatever) What it can do: - ELF binaries - ELF shared libraries - Windows Win32 and Wi...

This patch series changes a small part of the library to use __attribute__((cleanup(...))) to automatically free memory when pointers go out of the current scope. In general terms this seems to be a small win although you do have to use it carefully. For functions where you can completely get rid of the "exit code paths", it can simplify things. For a good example, see the

The first three patches were posted previously: https://www.redhat.com/archives/libguestfs/2010-July/msg00082.html The last two patches in this series change guestfish -i to use this new code. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming blog: http://rwmj.wordpress.com Fedora now supports 80 OCaml packages (the OPEN alternative to

These three patches (two were previously posted) can do simple operating system inspection in C. Example of use: ><fs> add-ro rhel55.img ><fs> run ><fs> inspect-os /dev/VolGroup00/LogVol00 ><fs> inspect-get-type /dev/VolGroup00/LogVol00 linux ><fs> inspect-get-distro /dev/VolGroup00/LogVol00 rhel ><fs> inspect-get-arch

Previously discussed here: https://www.redhat.com/archives/libguestfs/2010-August/msg00002.html -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones virt-df lists disk usage of guests without needing to install any software inside the virtual machine. Supports Linux and Windows. http://et.redhat.com/~rjones/virt-df/

...od>. +This command runs L<file(1)> after first decompressing C<path> +using C<meth>. -C<method> must be one of C<gzip>, C<compress> or C<bzip2>. +C<meth> must be one of C<gzip>, C<compress> or C<bzip2>. Since 1.0.63, use C<guestfs_file> instead which can now process compressed files." }; @@ -390,7 +390,7 @@ process compressed files." }; ]; shortdesc = "return lines matching a pattern"; longdesc = "\ -This calls the external C<egrep> program and returns the +This calls the external...

...intf"); - return NULL; - } - - if (strstr (file, "gzip")) - method = "zcat"; - else if (strstr (file, "bzip2")) - method = "bzcat"; - else - method = "cat"; - - /* Security: Refuse to download initrd if it is huge. */ - size = guestfs_filesize (g, path); - if (size == -1 || size > 100000000) { - error (g, _("size of %s unreasonable (%" PRIi64 " bytes)"), - path, size); - goto out; - } - - if (mkdtemp (dir) == NULL) { - perrorf (g, "mkdtemp"); - goto out; - } - - initrd = saf...

...gth %d\n", entry[i].attrname, entry[i].attrval.attrval_len); diff --git a/examples/to-xml.c b/examples/to-xml.c index 4317619..ee1b3bf 100644 --- a/examples/to-xml.c +++ b/examples/to-xml.c @@ -120,7 +120,7 @@ display_partition (guestfs_h *g, const char *dev) CALL (what = guestfs_file (g, dev), NULL); - if (strcmp (what, "x86 boot sector") == 0) + if (STREQ (what, "x86 boot sector")) /* This is what 'file' program shows for Windows/NTFS partitions. */ printf ("<windows/>\n"); else if (strstr (what, "boot sector&quo...

Version 1 was here: https://www.redhat.com/archives/libguestfs/2017-June/msg00003.html This patch series reimplements a few more APIs in OCaml, including some very important core APIs like ?list_filesystems? and ?mount?. All the tests pass after this. The selection of APIs that I have moved may look a little random, but in fact they are all APIs consumed by the inspection code (and some more

This started as a simple warning-elimination change. I'll get back to that series shortly ;-) It turned into a factorization and constification exercise during which I got a taste of ocaml. Thanks to Rich Jones for help with a few snippets in generator.ml. The overall result is that many previously-manually-maintained bits from daemon/*.c functions are now hoisted into the automatically-

v2 was here: https://www.redhat.com/archives/libguestfs/2017-June/msg00008.html This series gets as far as a working (and faster) reimplementation of ‘guestfs_list_filesystems’. I also have another patch series on top of this one which reimplements the inspection APIs inside the daemon, but that needs a bit more work still, since inspection turns out to be a very large piece of code. Rich.

Split up the huge generator/actions.ml into several smaller files. Rich.

I think this fixes everything mentioned: - Added the Optgroups module as suggested. - Remove command temporary files. - Replace command ~flags with ?fold_stdout_on_stderr. - Nest _with_mounted function. - Rebase & retest. Rich.

v1 was posted here: https://www.redhat.com/archives/libguestfs/2017-July/msg00098.html This series now depends on two small patches which I posted separately: https://www.redhat.com/archives/libguestfs/2017-July/msg00207.html https://www.redhat.com/archives/libguestfs/2017-July/msg00209.html v1 -> v2: - Previously changes to generator/daemon.ml were made incrementally through the patch

Previously posted as part of the mega utilities/inspection series here: https://www.redhat.com/archives/libguestfs/2017-June/msg00232.html What I've done is to extract just the parts related to rewriting daemon APIs in OCaml, rebase them on top of the current master, fix a few things, and recompile and test everything. Rich.

This is a combination of: https://www.redhat.com/archives/libguestfs/2017-June/msg00046.html [PATCH 00/12] Refactor utility functions. plus: https://www.redhat.com/archives/libguestfs/2017-June/msg00023.html [PATCH v3 00/19] Allow APIs to be implemented in OCaml. with the second patches rebased on top of the utility refactoring, and some other adjustments and extensions. This passes

v6 was posted here: https://www.redhat.com/archives/libguestfs/2017-June/msg00103.html and this requires the utilities refactoring posted here: https://www.redhat.com/archives/libguestfs/2017-June/msg00169.html Inspection is now complete[*], although not very well tested. I'm intending to compare the output of many guests using old & new virt-inspector to see if I can find any