diff options
Diffstat (limited to 'otafault/ota_io.cpp')
| -rw-r--r-- | otafault/ota_io.cpp | 163 |
1 files changed, 76 insertions, 87 deletions
diff --git a/otafault/ota_io.cpp b/otafault/ota_io.cpp index 02e80f9bf..2ce3dfcc2 100644 --- a/otafault/ota_io.cpp +++ b/otafault/ota_io.cpp @@ -14,9 +14,7 @@ * limitations under the License. */ -#if defined (TARGET_INJECT_FAULTS) #include <map> -#endif #include <errno.h> #include <fcntl.h> @@ -24,137 +22,128 @@ #include <sys/stat.h> #include <unistd.h> +#include "config.h" #include "ota_io.h" -#if defined (TARGET_INJECT_FAULTS) -static std::map<int, const char*> FilenameCache; -static std::string FaultFileName = -#if defined (TARGET_READ_FAULT) - TARGET_READ_FAULT; -#elif defined (TARGET_WRITE_FAULT) - TARGET_WRITE_FAULT; -#elif defined (TARGET_FSYNC_FAULT) - TARGET_FSYNC_FAULT; -#endif // defined (TARGET_READ_FAULT) -#endif // defined (TARGET_INJECT_FAULTS) +static std::map<intptr_t, const char*> filename_cache; +static std::string read_fault_file_name = ""; +static std::string write_fault_file_name = ""; +static std::string fsync_fault_file_name = ""; + +static bool get_hit_file(const char* cached_path, std::string ffn) { + return should_hit_cache() + ? !strncmp(cached_path, OTAIO_CACHE_FNAME, strlen(cached_path)) + : !strncmp(cached_path, ffn.c_str(), strlen(cached_path)); +} + +void ota_set_fault_files() { + if (should_fault_inject(OTAIO_READ)) { + read_fault_file_name = fault_fname(OTAIO_READ); + } + if (should_fault_inject(OTAIO_WRITE)) { + write_fault_file_name = fault_fname(OTAIO_WRITE); + } + if (should_fault_inject(OTAIO_FSYNC)) { + fsync_fault_file_name = fault_fname(OTAIO_FSYNC); + } +} int ota_open(const char* path, int oflags) { -#if defined (TARGET_INJECT_FAULTS) // Let the caller handle errors; we do not care if open succeeds or fails int fd = open(path, oflags); - FilenameCache[fd] = path; + filename_cache[fd] = path; return fd; -#else - return open(path, oflags); -#endif } int ota_open(const char* path, int oflags, mode_t mode) { -#if defined (TARGET_INJECT_FAULTS) int fd = open(path, oflags, mode); - FilenameCache[fd] = path; - return fd; -#else - return open(path, oflags, mode); -#endif -} + filename_cache[fd] = path; + return fd; } FILE* ota_fopen(const char* path, const char* mode) { -#if defined (TARGET_INJECT_FAULTS) FILE* fh = fopen(path, mode); - FilenameCache[(intptr_t)fh] = path; + filename_cache[(intptr_t)fh] = path; return fh; -#else - return fopen(path, mode); -#endif } int ota_close(int fd) { -#if defined (TARGET_INJECT_FAULTS) - // descriptors can be reused, so make sure not to leave them in the cahce - FilenameCache.erase(fd); -#endif + // descriptors can be reused, so make sure not to leave them in the cache + filename_cache.erase(fd); return close(fd); } int ota_fclose(FILE* fh) { -#if defined (TARGET_INJECT_FAULTS) - FilenameCache.erase((intptr_t)fh); -#endif + filename_cache.erase((intptr_t)fh); return fclose(fh); } size_t ota_fread(void* ptr, size_t size, size_t nitems, FILE* stream) { -#if defined (TARGET_READ_FAULT) - if (FilenameCache.find((intptr_t)stream) != FilenameCache.end() - && FilenameCache[(intptr_t)stream] == FaultFileName) { - FaultFileName = ""; - errno = EIO; - return 0; - } else { - return fread(ptr, size, nitems, stream); + if (should_fault_inject(OTAIO_READ)) { + auto cached = filename_cache.find((intptr_t)stream); + const char* cached_path = cached->second; + if (cached != filename_cache.end() && + get_hit_file(cached_path, read_fault_file_name)) { + read_fault_file_name = ""; + errno = EIO; + return 0; + } } -#else return fread(ptr, size, nitems, stream); -#endif } ssize_t ota_read(int fd, void* buf, size_t nbyte) { -#if defined (TARGET_READ_FAULT) - if (FilenameCache.find(fd) != FilenameCache.end() - && FilenameCache[fd] == FaultFileName) { - FaultFileName = ""; - errno = EIO; - return -1; - } else { - return read(fd, buf, nbyte); + if (should_fault_inject(OTAIO_READ)) { + auto cached = filename_cache.find(fd); + const char* cached_path = cached->second; + if (cached != filename_cache.end() + && get_hit_file(cached_path, read_fault_file_name)) { + read_fault_file_name = ""; + errno = EIO; + return -1; + } } -#else return read(fd, buf, nbyte); -#endif } size_t ota_fwrite(const void* ptr, size_t size, size_t count, FILE* stream) { -#if defined (TARGET_WRITE_FAULT) - if (FilenameCache.find((intptr_t)stream) != FilenameCache.end() - && FilenameCache[(intptr_t)stream] == FaultFileName) { - FaultFileName = ""; - errno = EIO; - return 0; - } else { - return fwrite(ptr, size, count, stream); + if (should_fault_inject(OTAIO_WRITE)) { + auto cached = filename_cache.find((intptr_t)stream); + const char* cached_path = cached->second; + if (cached != filename_cache.end() && + get_hit_file(cached_path, write_fault_file_name)) { + write_fault_file_name = ""; + errno = EIO; + return 0; + } } -#else return fwrite(ptr, size, count, stream); -#endif } ssize_t ota_write(int fd, const void* buf, size_t nbyte) { -#if defined (TARGET_WRITE_FAULT) - if (FilenameCache.find(fd) != FilenameCache.end() - && FilenameCache[fd] == FaultFileName) { - FaultFileName = ""; - errno = EIO; - return -1; - } else { - return write(fd, buf, nbyte); + if (should_fault_inject(OTAIO_WRITE)) { + auto cached = filename_cache.find(fd); + const char* cached_path = cached->second; + if (cached != filename_cache.end() && + get_hit_file(cached_path, write_fault_file_name)) { + write_fault_file_name = ""; + errno = EIO; + return -1; + } } -#else return write(fd, buf, nbyte); -#endif } int ota_fsync(int fd) { -#if defined (TARGET_FSYNC_FAULT) - if (FilenameCache.find(fd) != FilenameCache.end() - && FilenameCache[fd] == FaultFileName) { - FaultFileName = ""; - errno = EIO; - return -1; - } else { - return fsync(fd); + if (should_fault_inject(OTAIO_FSYNC)) { + auto cached = filename_cache.find(fd); + const char* cached_path = cached->second; + if (cached != filename_cache.end() && + get_hit_file(cached_path, fsync_fault_file_name)) { + fsync_fault_file_name = ""; + errno = EIO; + return -1; + } } -#else return fsync(fd); -#endif } + |