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From: Cyril Hrubis <chrubis@suse.cz>
To: Andrea Cervesato <andrea.cervesato@suse.com>
Cc: ltp@lists.linux.it
Subject: Re: [LTP] [PATCH v11 1/2] lib: Extend tst_assert_ulong() with enum flags
Date: Wed, 23 Sep 2026 13:17:35 +0200	[thread overview]
Message-ID: <arO1T65e7xn5j4_U@yuki.lan> (raw)
In-Reply-To: <6a9a867b.de81f790.219d91.7092@mx.google.com>

Hi!
> > +
> > +	if (flags & TST_ASSERT_SATURATED_INT) {
> > +		if (sys_val_64 > (unsigned long long)INT_MAX)
> > +			expected_val = (unsigned long)INT_MAX;
> > +		else
> > +			expected_val = (unsigned long)sys_val_64;
> > +	} else if (flags & TST_ASSERT_TRUNC_32BIT) {
> 
> In 32bit compat mode `unsigned long` becomes 32bit, so we can simply do:
> 
> void tst_assert_ulong(const char *file, const int lineno, const char *path, unsigned long val)
> {
> 	unsigned long long sys_val;
> 
> 	safe_file_scanf(file, lineno, NULL, path, "%llu", &sys_val);
> 
> 	if (val == (unsigned long)sys_val) {
> 		tst_res_(file, lineno, TPASS, "%s = %lu", path, val);
> 		return;
> 	}
> 
> 	tst_res_(file, lineno, TFAIL, "%s != %lu got %lu",
> 		path, val, (unsigned long)sys_val);
> }
> 
> And then, inside the test:
> 
> 	if (tst_is_compat_mode() && info.shmmax == INT_MAX)
> 		tst_res(TPASS, "shmmax clamped to INT_MAX in compat mode");

As I commented on the patch from pvorel, I do not like the blind TPASS
here. Either we put the saturated logic into the test library, or we
need to open-code it here.

> 	else
> 		TST_ASSERT_ULONG(PATH_KERN_SHMMAX, info.shmmax);
> 
> 	TST_ASSERT_ULONG(PATH_KERN_SHMMNI, info.shmmni);
> 	TST_ASSERT_ULONG(PATH_KERN_SHMALL, info.shmall);

-- 
Cyril Hrubis
chrubis@suse.cz

-- 
Mailing list info: https://lists.linux.it/listinfo/ltp

  parent reply	other threads:[~2026-09-23 11:17 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-03  9:52 [LTP] [PATCH v11 0/2] shmctl03: Fix 32-bit compat mode failure Wei Gao via ltp
2026-09-03  9:52 ` [LTP] [PATCH v11 1/2] lib: Extend tst_assert_ulong() with enum flags Wei Gao via ltp
2026-09-03 12:00   ` [LTP] " linuxtestproject.agent
2026-09-04  8:51   ` [LTP] [PATCH v11 1/2] " Andrea Cervesato via ltp
2026-09-07  7:29     ` Wei Gao via ltp
2026-09-16 11:33       ` Petr Vorel
2026-09-17  7:42         ` Li Wang
2026-09-23 11:17     ` Cyril Hrubis [this message]
2026-09-03  9:52 ` [LTP] [PATCH v11 2/2] shmctl03: Fix 32-bit compat mode failure Wei Gao via ltp

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