1 // SPDX-License-Identifier: Apache-2.0
2 // Copyright (C) 2018 IBM Corp.
3
4 #include "config.h"
5
6 extern "C" {
7 #include "backend.h"
8 #include "common.h"
9 #include "mboxd.h"
10 }
11
12 #include "vpnor/test/tmpd.hpp"
13
14 #include <fcntl.h>
15 #include <sys/ioctl.h>
16 #include <sys/mman.h>
17 #include <sys/syslog.h>
18 #include <unistd.h>
19
20 #include <cassert>
21 #include <filesystem>
22
23 static constexpr auto BLOCK_SIZE = 0x1000;
24 static constexpr auto DATA_SIZE = 8;
25
26 const uint8_t data[DATA_SIZE] = {0xa0, 0xa1, 0xa2, 0xa3,
27 0xa4, 0xa5, 0xa6, 0xa7};
28
29 const std::string toc[] = {
30 "partition01=TEST1,00001000,00002000,80,ECC,READWRITE",
31 };
32
main(void)33 int main(void)
34 {
35 namespace fs = std::filesystem;
36 namespace test = openpower::virtual_pnor::test;
37
38 struct mbox_context _ctx, *ctx = &_ctx;
39 char src[DATA_SIZE]{0};
40 void* map;
41 int rc;
42 int fd;
43
44 /* Setup */
45 memset(ctx, 0, sizeof(mbox_context));
46
47 mbox_vlog = &mbox_log_console;
48 verbosity = (verbose)2;
49
50 ctx->backend.flash_size = 0x2000;
51 test::VpnorRoot root(&ctx->backend, toc, BLOCK_SIZE);
52 root.write("TEST1", data, sizeof(data));
53 /* flash_write doesn't copy the file for us */
54 assert(fs::copy_file(root.ro() / "TEST1", root.rw() / "TEST1"));
55 fs::path patch = root.patch() / "TEST1";
56 assert(fs::copy_file(root.ro() / "TEST1", patch));
57
58 /* Test */
59 memset(src, 0x33, sizeof(src));
60 rc = backend_write(&ctx->backend, 0x1000, src, sizeof(src));
61 assert(rc == 0);
62
63 /* Check that RW file is unmodified after the patch write */
64 fd = open((root.rw() / "TEST1").c_str(), O_RDONLY);
65 map = mmap(NULL, sizeof(src), PROT_READ, MAP_SHARED, fd, 0);
66 assert(map != MAP_FAILED);
67 rc = memcmp(data, map, sizeof(src));
68 assert(rc == 0);
69 munmap(map, sizeof(src));
70 close(fd);
71
72 /* Check that PATCH is modified with the new data */
73 fd = open(patch.c_str(), O_RDONLY);
74 map = mmap(NULL, sizeof(src), PROT_READ, MAP_SHARED, fd, 0);
75 assert(map != MAP_FAILED);
76 rc = memcmp(src, map, sizeof(src));
77 assert(rc == 0);
78 munmap(map, sizeof(src));
79 close(fd);
80
81 return rc;
82 }
83