diff options
Diffstat (limited to 'Utilities/cmlibarchive/libarchive/archive_windows.c')
| -rw-r--r-- | Utilities/cmlibarchive/libarchive/archive_windows.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/Utilities/cmlibarchive/libarchive/archive_windows.c b/Utilities/cmlibarchive/libarchive/archive_windows.c index af104b8..51860ac 100644 --- a/Utilities/cmlibarchive/libarchive/archive_windows.c +++ b/Utilities/cmlibarchive/libarchive/archive_windows.c @@ -64,6 +64,23 @@ #define EPOC_TIME ARCHIVE_LITERAL_ULL(116444736000000000) +#if defined(__LA_LSEEK_NEEDED) +static BOOL SetFilePointerEx_perso(HANDLE hFile, + LARGE_INTEGER liDistanceToMove, + PLARGE_INTEGER lpNewFilePointer, + DWORD dwMoveMethod) +{ + LARGE_INTEGER li; + li.QuadPart = liDistanceToMove.QuadPart; + li.LowPart = SetFilePointer( + hFile, li.LowPart, &li.HighPart, dwMoveMethod); + if(lpNewFilePointer) { + lpNewFilePointer->QuadPart = li.QuadPart; + } + return li.LowPart != -1 || GetLastError() == NO_ERROR; +} +#endif + struct ustat { int64_t st_atime; uint32_t st_atime_nsec; @@ -250,6 +267,40 @@ __la_fcntl(int fd, int cmd, int val) return (-1); } +#if defined(__LA_LSEEK_NEEDED) +__int64 +__la_lseek(int fd, __int64 offset, int whence) +{ + LARGE_INTEGER distance; + LARGE_INTEGER newpointer; + HANDLE handle; + + if (fd < 0) { + errno = EBADF; + return (-1); + } + handle = (HANDLE)_get_osfhandle(fd); + if (GetFileType(handle) != FILE_TYPE_DISK) { + errno = EBADF; + return (-1); + } + distance.QuadPart = offset; + if (!SetFilePointerEx_perso(handle, distance, &newpointer, whence)) { + DWORD lasterr; + + lasterr = GetLastError(); + if (lasterr == ERROR_BROKEN_PIPE) + return (0); + if (lasterr == ERROR_ACCESS_DENIED) + errno = EBADF; + else + la_dosmaperr(lasterr); + return (-1); + } + return (newpointer.QuadPart); +} +#endif + /* This can exceed MAX_PATH limitation. */ int __la_open(const char *path, int flags, ...) |