93 	void *mmap_ptr, *tmp_ptr;  in ringbuf_subtest()  local
107 	mmap_ptr = mmap(NULL, page_size, PROT_READ | PROT_WRITE, MAP_SHARED, rb_fd, 0);  in ringbuf_subtest()
108 	ASSERT_OK_PTR(mmap_ptr, "rw_cons_pos");  in ringbuf_subtest()
109 	tmp_ptr = mremap(mmap_ptr, page_size, 2 * page_size, MREMAP_MAYMOVE);  in ringbuf_subtest()
112 	ASSERT_ERR(mprotect(mmap_ptr, page_size, PROT_EXEC), "exec_cons_pos_protect");  in ringbuf_subtest()
113 	ASSERT_OK(munmap(mmap_ptr, page_size), "unmap_rw");  in ringbuf_subtest()
116 	mmap_ptr = mmap(NULL, page_size, PROT_WRITE, MAP_SHARED, rb_fd, page_size);  in ringbuf_subtest()
118 	ASSERT_ERR_PTR(mmap_ptr, "wr_prod_pos");  in ringbuf_subtest()
122 	mmap_ptr = mmap(NULL, page_size, PROT_WRITE, MAP_SHARED, rb_fd, 2 * page_size);  in ringbuf_subtest()
124 	ASSERT_ERR_PTR(mmap_ptr, "wr_data_page_one");  in ringbuf_subtest()
126 	mmap_ptr = mmap(NULL, page_size, PROT_WRITE, MAP_SHARED, rb_fd, 3 * page_size);  in ringbuf_subtest()
127 	ASSERT_ERR_PTR(mmap_ptr, "wr_data_page_two");  in ringbuf_subtest()
128 	mmap_ptr = mmap(NULL, 2 * page_size, PROT_WRITE, MAP_SHARED, rb_fd, 2 * page_size);  in ringbuf_subtest()
129 	ASSERT_ERR_PTR(mmap_ptr, "wr_data_page_all");  in ringbuf_subtest()
132 	mmap_ptr = mmap(NULL, 4 * page_size, PROT_READ, MAP_SHARED, rb_fd, 0);  in ringbuf_subtest()
133 	if (!ASSERT_OK_PTR(mmap_ptr, "ro_prod_pos"))  in ringbuf_subtest()
136 	ASSERT_ERR(mprotect(mmap_ptr, 4 * page_size, PROT_WRITE), "write_protect");  in ringbuf_subtest()
137 	ASSERT_ERR(mprotect(mmap_ptr, 4 * page_size, PROT_EXEC), "exec_protect");  in ringbuf_subtest()
138 	ASSERT_ERR_PTR(mremap(mmap_ptr, 0, 4 * page_size, MREMAP_MAYMOVE), "ro_remap");  in ringbuf_subtest()
139 	ASSERT_OK(munmap(mmap_ptr, 4 * page_size), "unmap_ro");  in ringbuf_subtest()
142 	mmap_ptr = mmap(NULL, page_size, PROT_READ, MAP_SHARED, rb_fd, page_size);  in ringbuf_subtest()
143 	if (!ASSERT_OK_PTR(mmap_ptr, "ro_prod_pos"))  in ringbuf_subtest()
146 	ASSERT_ERR(mprotect(mmap_ptr, page_size, PROT_WRITE), "write_protect");  in ringbuf_subtest()
147 	ASSERT_ERR(mprotect(mmap_ptr, page_size, PROT_EXEC), "exec_protect");  in ringbuf_subtest()
148 	ASSERT_ERR_PTR(mremap(mmap_ptr, 0, 3 * page_size, MREMAP_MAYMOVE), "ro_remap");  in ringbuf_subtest()
149 	ASSERT_OK(munmap(mmap_ptr, page_size), "unmap_ro");  in ringbuf_subtest()