search for: shift_right

OCaml 4.02 introduced the 'bytes' type, a mutable string intended to replace the existing 'string' type for those cases where the byte array can be mutated. In future the 'string' type will become immutable. This is not the default now, but it can be forced using the '-safe-string' compile option. I tested this on Fedora 24 (OCaml 4.02) & RHEL 7 (OCaml 4.01).

This is just the utilities part of the patch series from: https://www.redhat.com/archives/libguestfs/2017-June/msg00103.html I believe this addresses everything raised in comments on that patch series. Rich.

...e_get str 2) in + let c3 = Char.code (String.unsafe_get str 3) in + Int64.of_int c0 +^ + (Int64.shift_left (Int64.of_int c1) 8) +^ + (Int64.shift_left (Int64.of_int c2) 16) +^ + (Int64.shift_left (Int64.of_int c3) 24) + +let le32_of_int i = + let c0 = i &^ 0xffL in + let c1 = Int64.shift_right (i &^ 0xff00L) 8 in + let c2 = Int64.shift_right (i &^ 0xff0000L) 16 in + let c3 = Int64.shift_right (i &^ 0xff000000L) 24 in + let b = Bytes.create 4 in + Bytes.unsafe_set b 0 (Char.unsafe_chr (Int64.to_int c0)); + Bytes.unsafe_set b 1 (Char.unsafe_chr (Int64.to_int c1)); + Bytes...

v5: https://www.redhat.com/archives/libguestfs/2017-June/msg00065.html Since v5, this now implements inspection almost completely for Linux and Windows guests. Rich.

v7 was: https://www.redhat.com/archives/libguestfs/2017-June/msg00169.html https://www.redhat.com/archives/libguestfs/2017-June/msg00184.html I believe this addresses all comments received so far. Also it now passes a test where I compared about 100 disk images processed with old and new virt-inspector binaries. The output is identical in all cases except one which is caused by a bug in blkid

This turned out to be rather more involved than I thought. We have lots of utility functions, spread all over the repository, with not a lot of structure. This moves many of them under common/ and structures them so there are clear dependencies. This doesn't complete the job by any means. Other items I had on my to-do list for this change were: - Split up mllib/common_utils into: -

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

Unlike full virtualization in which the virtual machine provides the same platform interface as running natively on the hardware, paravirtualization requires modification to the guest operating system to work with the platform interface provided by the hypervisor. Xen was designed with performance in mind. Calls to the hypervisor are minimized, batched if necessary, and non-critical codepaths

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