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Have the coredump_phnum test ask for the page size

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The page size may be dynamically selected on boot. Have the
coredump_phnum test helper ask the kernel for the correct value.

Sponsored by:	The FreeBSD Foundation
This commit is contained in:
Andrew Turner 2022-04-07 15:59:32 +01:00
parent be461cdfb3
commit df696a2fb6
1 changed files with 5 additions and 3 deletions
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8
tests/sys/kern/coredump_phnum_helper.c
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@ -33,6 +33,7 @@
#include <err.h>
#include <stdint.h>
#include <stdlib.h>
#include <unistd.h>
/*
* This program is intended to create a bunch of segment mappings, then dump
@ -42,10 +43,11 @@ int
main(int argc __unused, char **argv __unused)
{
void *v;
size_t i, pages;
size_t i, pages, page_size;
page_size = getpagesize();
pages = UINT16_MAX + 1000;
v = mmap(NULL, pages * PAGE_SIZE, PROT_READ | PROT_WRITE,
v = mmap(NULL, pages * page_size, PROT_READ | PROT_WRITE,
MAP_ANON | MAP_PRIVATE, -1, 0);
if (v == NULL)
err(1, "mmap");
@ -54,7 +56,7 @@ main(int argc __unused, char **argv __unused)
* Alternate protections to interleave RW and R PT_LOAD
* segments.
*/
if (mprotect((char *)v + i * PAGE_SIZE, PAGE_SIZE,
if (mprotect((char *)v + i * page_size, page_size,
PROT_READ) != 0)
err(1, "mprotect");
}