[LTP] [PATCH] lib: Add fifo library

[Joerg Vehlow <lkml@jv-coder.de>]

Hi,

thanks Petr.

Some comments:
>> +#include <stddef.h>
>> +#include <stdlib.h>
>> +#include <stdio.h>
>> +#include <unistd.h>
>> +#include <sys/types.h>
>> +#include <sys/stat.h>
>> +
>> +#define TST_NO_DEFAULT_MAIN
>> +#include "tst_test.h"
>> +#include "old_tmpdir.h"
>> +#include "tst_fifo.h"
>> +
>> +#ifndef PATH_MAX
>> +#ifdef MAXPATHLEN
>> +#define PATH_MAX	MAXPATHLEN
>> +#else
>> +#define PATH_MAX	1024
>> +#endif
>> +#endif
> Hm, this is copy paste from old tests (all use test.h, even quite new and clean tests/tst_tmpdir_test.c).
> I wonder if this is still relevant, can't we use #include <limits.h>?
Right, if there is nothing against using limits.h, I'll change it. I 
just used other code for reference for my code.
>> +++ b/testcases/Makefile
>> @@ -28,7 +28,7 @@ include $(top_srcdir)/include/mk/env_pre.mk
>>   # 1. kdump shouldn't be compiled by default, because it's runtime based and
>>   #    WILL crash the build host (the tests need to be fixed to just build, not
>>   #    run).
>> -FILTER_OUT_DIRS		:= kdump
>> +FILTER_OUT_DIRS		:= kdump open_posix_testsuite realtime kernel network misc
> I guess this is unrelated change for your debug.
Damn... This happens to me all the time, it's time for configure 
switches ;)
>
>> +[ "$TST_NEEDS_TMPDIR" != 1 ] && tst_brk TCONF "fifo library requires TST_NEEDS_TMPDIR=1"
> If we apply https://patchwork.ozlabs.org/patch/1206399/, it should be
> $TST_NEEDS_TMPDIR=1
I don't get it? The path you linked seems unrelated to me and did you mean
[? "$TST_NEEDS_TMPDIR" = 1 ] || ... ?
> +	[ "$TST_NEEDS_FIFO" = 1 ] && . tst_fifo.sh
> I'd load it at the top, just below
> . tst_ansi_color.sh
> . tst_security.sh
The way I implemented it, I can't load it at the top, because 
tst_fifo.sh requires
TST_TMPDIR to be already set, when it is included.
> Kind regards,
> Petr