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