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 <experimental/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 33 int main(void) 34 { 35 namespace fs = std::experimental::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