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selftests/nolibc: Add getpagesize(2) selftest

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Test the getpagesize() function. Make sure it returns the correct
value.

Signed-off-by: Ammar Faizi <ammarfaizi2@gnuweeb.org>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Ammar Faizi 2023-01-10 08:24:34 +01:00 • committed by Paul E. McKenney
parent 7efd762e97
commit a290296ab8
1 changed files with 30 additions and 0 deletions
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30
tools/testing/selftests/nolibc/nolibc-test.c
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@ -442,6 +442,35 @@ int test_getdents64(const char *dir)
return ret;
}
static int test_getpagesize(void)
{
long x = getpagesize();
int c;
if (x < 0)
return x;
#if defined(__x86_64__) || defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__)
/*
* x86 family is always 4K page.
*/
c = (x == 4096);
#elif defined(__aarch64__)
/*
* Linux aarch64 supports three values of page size: 4K, 16K, and 64K
* which are selected at kernel compilation time.
*/
c = (x == 4096 || x == (16 * 1024) || x == (64 * 1024));
#else
/*
* Assuming other architectures must have at least 4K page.
*/
c = (x >= 4096);
#endif
return !c;
}
/* Run syscall tests between IDs <min> and <max>.
* Return 0 on success, non-zero on failure.
*/
@ -502,6 +531,7 @@ int run_syscall(int min, int max)
CASE_TEST(gettimeofday_bad2); EXPECT_SYSER(1, gettimeofday(NULL, (void *)1), -1, EFAULT); break;
CASE_TEST(gettimeofday_bad2); EXPECT_SYSER(1, gettimeofday(NULL, (void *)1), -1, EFAULT); break;
#endif
CASE_TEST(getpagesize); EXPECT_SYSZR(1, test_getpagesize()); break;
CASE_TEST(ioctl_tiocinq); EXPECT_SYSZR(1, ioctl(0, TIOCINQ, &tmp)); break;
CASE_TEST(ioctl_tiocinq); EXPECT_SYSZR(1, ioctl(0, TIOCINQ, &tmp)); break;
CASE_TEST(link_root1); EXPECT_SYSER(1, link("/", "/"), -1, EEXIST); break;