diff options
Diffstat (limited to 'klm/util/file.cc')
| -rw-r--r-- | klm/util/file.cc | 26 |
1 files changed, 21 insertions, 5 deletions
diff --git a/klm/util/file.cc b/klm/util/file.cc index bef04cb1..51eaf972 100644 --- a/klm/util/file.cc +++ b/klm/util/file.cc @@ -17,7 +17,11 @@ #include <fcntl.h> #include <stdint.h> -#if defined(_WIN32) || defined(_WIN64) +#if defined __MINGW32__ +#include <windows.h> +#include <unistd.h> +#warning "The file functions on MinGW have not been tested for file sizes above 2^31 - 1. Please read https://stackoverflow.com/questions/12539488/determine-64-bit-file-size-in-c-on-mingw-32-bit and fix" +#elif defined(_WIN32) || defined(_WIN64) #include <windows.h> #include <io.h> #include <algorithm> @@ -76,7 +80,13 @@ int CreateOrThrow(const char *name) { } uint64_t SizeFile(int fd) { -#if defined(_WIN32) || defined(_WIN64) +#if defined __MINGW32__ + struct stat sb; + // Does this handle 64-bit? + int ret = fstat(fd, &sb); + if (ret == -1 || (!sb.st_size && !S_ISREG(sb.st_mode))) return kBadSize; + return sb.st_size; +#elif defined(_WIN32) || defined(_WIN64) __int64 ret = _filelengthi64(fd); return (ret == -1) ? kBadSize : ret; #else // Not windows. @@ -100,7 +110,10 @@ uint64_t SizeOrThrow(int fd) { } void ResizeOrThrow(int fd, uint64_t to) { -#if defined(_WIN32) || defined(_WIN64) +#if defined __MINGW32__ + // Does this handle 64-bit? + int ret = ftruncate +#elif defined(_WIN32) || defined(_WIN64) errno_t ret = _chsize_s #elif defined(OS_ANDROID) int ret = ftruncate64 @@ -115,7 +128,7 @@ namespace { std::size_t GuardLarge(std::size_t size) { // The following operating systems have broken read/write/pread/pwrite that // only supports up to 2^31. -#if defined(_WIN32) || defined(_WIN64) || defined(__APPLE__) || defined(OS_ANDROID) +#if defined(_WIN32) || defined(_WIN64) || defined(__APPLE__) || defined(OS_ANDROID) || defined(__MINGW32__) return std::min(static_cast<std::size_t>(static_cast<unsigned>(-1)), size); #else return size; @@ -251,7 +264,10 @@ typedef CheckOffT<sizeof(off_t)>::True IgnoredType; // Can't we all just get along? void InternalSeek(int fd, int64_t off, int whence) { if ( -#if defined(_WIN32) || defined(_WIN64) +#if defined __MINGW32__ + // Does this handle 64-bit? + (off_t)-1 == lseek(fd, off, whence) +#elif defined(_WIN32) || defined(_WIN64) (__int64)-1 == _lseeki64(fd, off, whence) #elif defined(OS_ANDROID) (off64_t)-1 == lseek64(fd, off, whence) |