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Add mprotect merge after split mapping test 

Signed-off-by: raylee <hburaylee@gmail.com>
This commit is contained in:
raylee 2026-01-23 02:38:06 +00:00
parent e4e661a220
commit fd4bbc6cee
1 changed files with 17 additions and 0 deletions
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17
test/initramfs/src/apps/mmap/mmap_and_mprotect.c
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@ -10,6 +10,9 @@
#include "../test.h"
#define PAGE_SIZE 4096
#ifndef MAY_READ
#define MAY_READ (1 << 3)
#endif
const char *filename = "testfile";
FN_TEST(mprotect_shared_writable_mapping_on_read_only_file)
@ -54,3 +57,17 @@ FN_TEST(mprotect_private_writable_mapping_copy_on_write)
TEST_SUCC(unlink(filename));
}
END_TEST()
FN_TEST(mprotect_merge_after_split_mapping)
{
void *p = CHECK_WITH(mmap(NULL, 2 * PAGE_SIZE, PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0),
_ret != MAP_FAILED);
TEST_SUCC(mprotect(p, PAGE_SIZE, PROT_READ));
// Trigger an update + merge.
TEST_SUCC(
mprotect(p, 2 * PAGE_SIZE, PROT_READ | PROT_WRITE | MAY_READ));
}
END_TEST()