return fd;
}
-static uint64_t pagemap_read_vaddr(int fd, void *vaddr)
-{
- uint64_t value;
- int ret;
-
- ret = pread(fd, &value, sizeof(uint64_t),
- ((uint64_t)vaddr >> 12) * sizeof(uint64_t));
- if (ret != sizeof(uint64_t))
- err("pread() on pagemap failed");
-
- return value;
-}
-
/* This macro let __LINE__ works in err() */
#define pagemap_check_wp(value, wp) do { \
if (!!(value & PM_UFFD_WP) != wp) \
if (!child) {
/* Open the pagemap fd of the child itself */
fd = pagemap_open();
- value = pagemap_read_vaddr(fd, area_dst);
+ value = pagemap_get_entry(fd, area_dst);
/*
* After fork() uffd-wp bit should be gone as long as we're
* without UFFD_FEATURE_EVENT_FORK
/* Test applying pte marker to anon unpopulated */
wp_range(uffd, (uint64_t)area_dst, page_size, true);
- value = pagemap_read_vaddr(pagemap_fd, area_dst);
+ value = pagemap_get_entry(pagemap_fd, area_dst);
pagemap_check_wp(value, true);
/* Test unprotect on anon pte marker */
wp_range(uffd, (uint64_t)area_dst, page_size, false);
- value = pagemap_read_vaddr(pagemap_fd, area_dst);
+ value = pagemap_get_entry(pagemap_fd, area_dst);
pagemap_check_wp(value, false);
/* Test zap on anon marker */
wp_range(uffd, (uint64_t)area_dst, page_size, true);
if (madvise(area_dst, page_size, MADV_DONTNEED))
err("madvise(MADV_DONTNEED) failed");
- value = pagemap_read_vaddr(pagemap_fd, area_dst);
+ value = pagemap_get_entry(pagemap_fd, area_dst);
pagemap_check_wp(value, false);
/* Test fault in after marker removed */
*area_dst = 1;
- value = pagemap_read_vaddr(pagemap_fd, area_dst);
+ value = pagemap_get_entry(pagemap_fd, area_dst);
pagemap_check_wp(value, false);
/* Drop it to make pte none again */
if (madvise(area_dst, page_size, MADV_DONTNEED))
/* Touch the page */
*area_dst = 1;
wp_range(uffd, (uint64_t)area_dst, test_pgsize, true);
- value = pagemap_read_vaddr(pagemap_fd, area_dst);
+ value = pagemap_get_entry(pagemap_fd, area_dst);
pagemap_check_wp(value, true);
/* Make sure uffd-wp bit dropped when fork */
if (pagemap_test_fork(true))
err("madvise(MADV_PAGEOUT) failed");
/* Uffd-wp should persist even swapped out */
- value = pagemap_read_vaddr(pagemap_fd, area_dst);
+ value = pagemap_get_entry(pagemap_fd, area_dst);
pagemap_check_wp(value, true);
/* Make sure uffd-wp bit dropped when fork */
if (pagemap_test_fork(false))
/* Unprotect; this tests swap pte modifications */
wp_range(uffd, (uint64_t)area_dst, page_size, false);
- value = pagemap_read_vaddr(pagemap_fd, area_dst);
+ value = pagemap_get_entry(pagemap_fd, area_dst);
pagemap_check_wp(value, false);
/* Fault in the page from disk */
*area_dst = 2;
- value = pagemap_read_vaddr(pagemap_fd, area_dst);
+ value = pagemap_get_entry(pagemap_fd, area_dst);
pagemap_check_wp(value, false);
close(pagemap_fd);