Re: Link modules to DYN type
> On 26. Apr 2023, at 13:38, Hans Petter Selasky wrote:
>
> On 4/26/23 13:12, Konstantin Belousov wrote:
>> No, in-kernel linker does not behave this way.
>> Modules need to contain explicit reference to all modules they depend upon,
>> using the MODULE_DEPEND() macro. Only symbols from the dependencies are
>> resolved.
>> All modules get an implicit reference to kernel.
>
> Hi Konstantin,
>
> Maybe I wasn't so clear. Trying again:
>
>> diff --git a/sys/tests/ktest.c b/sys/tests/ktest.c
>> index 495fedf95dde..eb42cf062487 100644
>> --- a/sys/tests/ktest.c
>> +++ b/sys/tests/ktest.c
>> @@ -409,6 +409,12 @@ static moduledata_t ktestmod = {
>> 0
>> };
>> +int
>> +printf(const char *fmt, ...)
>> +{
>> + return (0);
>> +}
>> +
>> DECLARE_MODULE(ktestmod, ktestmod, SI_SUB_PSEUDO, SI_ORDER_ANY);
>> MODULE_VERSION(ktestmod, 1);
>> MODULE_DEPEND(ktestmod, netlink, 1, 1, 1);
>
> Then kldload ktest.ko . Which printf() function will be used if ktest.c calls
> printf() ?
>
> I would expect a warning from the kernel at least …
Hi,
This looks similar to this:
https://lists.freebsd.org/pipermail/freebsd-stable/2015-July/082751.html
https://lists.freebsd.org/pipermail/freebsd-stable/2015-July/082760.html
The “not knowing” about how symbols are going to be resolved has bothered me
for a while.
Regards,
Jan M.
Re: ZFS no longer mounted in alphanumerical order
> On 12 Mar 2019, at 12:14, Trond Endrestøl
> wrote:
>> An alternative sort approach, which handles df arguments which change the
>> number of columns, and only invokes df once:
>>
>> ${DF} "$@" | awk '/^Filesystem/ { print; sort = "sort -k " NF } !
>> /^Filesystem/ { print | sort }’
>
> Well, yes and no, mostly no.
>
> Why are we feeding each line from df(1) separately to sort(1)?
> It defeats the entire purpose. No sorting takes place.
>
> We might be better off accumulating the majority of the lines and
> sorting them in an END block.
That’s not how awk works. It maintains a pipe and feeds each line to the same
sort process.
There is another bug there, of course. The field number should be (NF - 1)
because of the space in the “Mounted on” header on the last column. That’s what
I get for just typing code into an email.
Regards,
Jan M.
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Re: ZFS no longer mounted in alphanumerical order
> On 12 Mar 2019, at 10:37, Trond Endrestøl
> wrote:
> I concocted a shell script, it looks promising:
>
> #!/bin/sh
> #-
> # Parallel mounting of ZFS filesystems leaves a chaotic listing of
> # mounted filesystems when viewed by df(1).
> # Separating the header from the remaining lines and sorting the
> # latter before recombining is a viable solution.
> #-
>
> DF=/bin/df
>
> ${DF} ${@} | grep^Filesystem
> ${DF} ${@} | grep -v ^Filesystem | sort -k 6
>
> # new-df.sh
An alternative sort approach, which handles df arguments which change the
number of columns, and only invokes df once:
${DF} "$@" | awk '/^Filesystem/ { print; sort = "sort -k " NF } ! /^Filesystem/
{ print | sort }’
Regards,
Jan.
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