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test/zdtm/static/maps02: add MADV_WIPEONFORK testcase

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In addition to that I did small non-functional corrections.

Signed-off-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@canonical.com>
This commit is contained in:
Alexander Mikhalitsyn 2025-05-04 16:32:01 +02:00 • committed by Andrei Vagin
parent af5412a433
commit 6476488a51
2 changed files with 18 additions and 4 deletions
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6
test/zdtm/static/get_smaps_bits.c
View file

@ -18,6 +18,10 @@
#define MADV_DONTDUMP 16
#endif
#ifndef MADV_WIPEONFORK
#define MADV_WIPEONFORK 18
#endif
static void parse_vmflags(char *buf, unsigned long *flags, unsigned long *madv)
{
char *tok;
@ -57,6 +61,8 @@ static void parse_vmflags(char *buf, unsigned long *flags, unsigned long *madv)
*madv |= (1ul << MADV_HUGEPAGE);
else if (_vmflag_match(tok, "nh"))
*madv |= (1ul << MADV_NOHUGEPAGE);
else if (_vmflag_match(tok, "wf"))
*madv |= (1ul << MADV_WIPEONFORK);
/*
* Anything else is just ignored.

16
test/zdtm/static/maps02.c
View file

@ -6,7 +6,11 @@
#define MADV_DONTDUMP 16
#endif
const char *test_doc = "Test shared memory with advises";
#ifndef MADV_WIPEONFORK
#define MADV_WIPEONFORK 18
#endif
const char *test_doc = "Test private memory with advises";
const char *test_author = "Cyrill Gorcunov <gorcunov@openvz.org>";
struct mmap_data {
@ -43,12 +47,12 @@ static int alloc_anon_mmap(struct mmap_data *m, int flags, int adv)
int main(int argc, char **argv)
{
struct mmap_data m[5] = {};
struct mmap_data m[6] = {};
size_t i;
test_init(argc, argv);
test_msg("Alloc growsdown\n");
test_msg("Alloc dontfork\n");
if (alloc_anon_mmap(&m[0], MAP_PRIVATE | MAP_ANONYMOUS, MADV_DONTFORK))
return -1;
@ -64,10 +68,14 @@ int main(int argc, char **argv)
if (alloc_anon_mmap(&m[3], MAP_PRIVATE | MAP_ANONYMOUS, MADV_HUGEPAGE))
return -1;
test_msg("Alloc dontfork/random|mergeable\n");
test_msg("Alloc mergeable\n");
if (alloc_anon_mmap(&m[4], MAP_PRIVATE | MAP_ANONYMOUS, MADV_MERGEABLE))
return -1;
test_msg("Alloc wipeonfork\n");
if (alloc_anon_mmap(&m[5], MAP_PRIVATE | MAP_ANONYMOUS, MADV_WIPEONFORK))
return -1;
test_msg("Fetch existing flags/adv\n");
for (i = 0; i < sizeof(m) / sizeof(m[0]); i++) {
if (get_smaps_bits((unsigned long)m[i].start, &m[i].orig_flags, &m[i].orig_madv))