On Thu, 29 Apr 2021 09:59:02 +0800
Brad Campbell via Dng <dng@???> wrote:
> G'day All,
>
> I've upgraded a staging server from Jessie to Beowulf and find a
> script in my initramfs is now broken, tracking it down it is a huge
> change in behaviour in the busybox version of dc and I can't find any
> reference to what I'm missing. Has anyone bumped up against this?
> I've tried this on both the arm and x64 versions and the behaviour is
> identical, so it's not an arm thing specifically.
>
> On jessie :
> brad@srv:~$ busybox dc
> 2
> 2
> add
> p
> 4
>
> On beowulf :
> root@rpi31:~# busybox dc
> 2
> 2
> add
> p
> ?
>
> What you can't see at the bottom of the last example is the rendering
> of the 0x02 character in the shell.
>
> The input processor also appears to have changed.
>
> brad@srv:~$ busybox dc
> 0x127
> p
> 295
>
> root@rpi31:~# busybox dc
> 0x127
> p
> 127
>
> Installed packages.
>
> root@rpi31:~# apt-cache showpkg busybox
> Package: busybox
> Versions:
> 1:1.30.1-4
> (/var/lib/apt/lists/deb.devuan.org_merged_dists_beowulf_main_binary-armhf_Packages)
> (/var/lib/dpkg/status) Description Language:
> File: /var/lib/apt/lists/deb.devuan.org_merged_dists_beowulf_main_binary-armhf_Packages
> MD5: b7707908219c331294f3f9e8d926a9dc Description Language: en
> File: /var/lib/apt/lists/deb.devuan.org_merged_dists_beowulf_main_i18n_Translation-en
> MD5: b7707908219c331294f3f9e8d926a9dc
>
>
> Reverse Depends:
> initramfs-tools-core,busybox 1:1.22.0-17~
> zfs-initramfs,busybox
> udhcpd,busybox 1:1.30.1
> udhcpc,busybox 1:1.30.1
> open-iscsi,busybox
> open-infrastructure-system-boot,busybox
> live-boot-initramfs-tools,busybox
> initramfs-tools-core,busybox 1:1.22.0-17~
> busybox-syslogd,busybox 1:1.30.1
> dropbear-initramfs,busybox
> cryptsetup-initramfs,busybox
> bootcd,busybox
> busybox-static,busybox
> busybox-static,busybox
> Dependencies:
> 1:1.30.1-4 - libc6 (2 2.28) busybox-static (0 (null)) initramfs-tools
> (3 0.99) busybox-static (0 (null)) Provides:
> 1:1.30.1-4 -
> Reverse Provides:
> busybox-static 1:1.30.1-4 (= )
>
>
> brad@srv:~$ apt-cache showpkg busybox
> Package: busybox
> Versions:
> 1:1.22.0-9+deb8u4 (/var/lib/dpkg/status)
> Description Language:
> File: /var/lib/apt/lists/archive.devuan.org_merged_dists_jessie_main_binary-amd64_Packages
> MD5: b7707908219c331294f3f9e8d926a9dc
> Description Language: en
> File: /var/lib/apt/lists/archive.devuan.org_merged_dists_jessie_main_i18n_Translation-en
> MD5: b7707908219c331294f3f9e8d926a9dc
>
> 1:1.22.0-9+deb8u1
> (/var/lib/apt/lists/archive.devuan.org_merged_dists_jessie_main_binary-amd64_Packages)
> Description Language:
> File: /var/lib/apt/lists/archive.devuan.org_merged_dists_jessie_main_binary-amd64_Packages
> MD5: b7707908219c331294f3f9e8d926a9dc Description Language: en
> File: /var/lib/apt/lists/archive.devuan.org_merged_dists_jessie_main_i18n_Translation-en
> MD5: b7707908219c331294f3f9e8d926a9dc
>
>
> Reverse Depends:
> udhcpd,busybox 1:1.22.0
> udhcpc,busybox 1:1.22.0
> live-boot-initramfs-tools,busybox
> initramfs-tools,busybox 1:1.01-3
> initramfs-tools,busybox 1:1.01-3
> cryptsetup,busybox
> busybox-syslogd,busybox 1:1.22.0
> busybox-static,busybox
> busybox-static,busybox
> bootcd,busybox
> Dependencies:
> 1:1.22.0-9+deb8u4 - libc6 (2 2.16) busybox-static (0 (null))
> initramfs-tools (3 0.99) busybox-static (0 (null)) 1:1.22.0-9+deb8u1
> - libc6 (2 2.16) busybox-static (0 (null)) initramfs-tools (3 0.99)
> busybox-static (0 (null)) Provides: 1:1.22.0-9+deb8u4 -
> 1:1.22.0-9+deb8u1 -
> Reverse Provides:
> busybox-static 1:1.22.0-9+deb8u1
>
> Am I doing something dumb?
>
> Regards,
> Brad
> _______________________________________________
> Dng mailing list
> Dng@???
> https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
Hi,
by looking at the latest git code:
static const struct op operators[] ALIGN_PTR = {
#if ENABLE_FEATURE_DC_LIBM
{"^", power},
// {"exp", power},
// {"pow", power},
#endif
{"%", mod},
// {"mod", mod},
// logic ops are not standard, remove?
{"and", and},
{"or", or},
{"not", not},
{"xor", eor},
{"+", add},
// {"add", add},
{"-", sub},
// {"sub", sub},
{"*", mul},
// {"mul", mul},
{"/", divide},
// {"div", divide},
{"p", print_no_pop},
{"f", print_stack_no_pop},
{"o", set_output_base},
};
it seems to me that mod, add, sub, mul, div are disabled
and only %, +, -, *, / are supported.
Cannot say if simply uncommenting them restores
the previous functionality, could be worth a try.
Eventually if it works a patch for making them optional
(CONFIG_DC_LONG_OPS or the like) could be sent
to the list.
Hope this helps,
Ciao,
Tito
::
Re: [DNG] Odd issue with busybox dc…
