| /** |
| * This file has no copyright assigned and is placed in the Public Domain. |
| * This file is part of the mingw-w64 runtime package. |
| * No warranty is given; refer to the file DISCLAIMER.PD within this package. |
| */ |
| #include <stdio.h> |
| #include <io.h> |
| #include <errno.h> |
| #include <windows.h> |
| #include <internal.h> |
| |
| struct oserr_map { |
| unsigned long oscode; /* OS values */ |
| int errnocode; /* System V codes */ |
| }; |
| |
| typedef union doubleint { |
| __int64 bigint; |
| struct { |
| unsigned long lowerhalf; |
| long upperhalf; |
| } twoints; |
| } DINT; |
| |
| #define _IOYOURBUF 0x0100 |
| #define _IOSETVBUF 0x0400 |
| #define _IOFEOF 0x0800 |
| #define _IOFLRTN 0x1000 |
| #define _IOCTRLZ 0x2000 |
| #define _IOCOMMIT 0x4000 |
| |
| /* General use macros */ |
| |
| #define inuse(s) ((s)->_flag & (_IOREAD|_IOWRT|_IORW)) |
| #define mbuf(s) ((s)->_flag & _IOMYBUF) |
| #define nbuf(s) ((s)->_flag & _IONBF) |
| #define ybuf(s) ((s)->_flag & _IOYOURBUF) |
| #define bigbuf(s) ((s)->_flag & (_IOMYBUF|_IOYOURBUF)) |
| #define anybuf(s) ((s)->_flag & (_IOMYBUF|_IONBF|_IOYOURBUF)) |
| |
| #define _INTERNAL_BUFSIZ 4096 |
| #define _SMALL_BUFSIZ 512 |
| |
| #define FOPEN 0x01 /* file handle open */ |
| #define FEOFLAG 0x02 /* end of file has been encountered */ |
| #define FCRLF 0x04 /* CR-LF across read buffer (in text mode) */ |
| #define FPIPE 0x08 /* file handle refers to a pipe */ |
| #define FNOINHERIT 0x10 /* file handle opened _O_NOINHERIT */ |
| #define FAPPEND 0x20 /* file handle opened O_APPEND */ |
| #define FDEV 0x40 /* file handle refers to device */ |
| #define FTEXT 0x80 /* file handle is in text mode */ |
| |
| static struct oserr_map local_errtab[] = { |
| { ERROR_INVALID_FUNCTION, EINVAL }, { ERROR_FILE_NOT_FOUND, ENOENT }, |
| { ERROR_PATH_NOT_FOUND, ENOENT }, { ERROR_TOO_MANY_OPEN_FILES, EMFILE }, |
| { ERROR_ACCESS_DENIED, EACCES }, { ERROR_INVALID_HANDLE, EBADF }, |
| { ERROR_ARENA_TRASHED, ENOMEM }, { ERROR_NOT_ENOUGH_MEMORY, ENOMEM }, |
| { ERROR_INVALID_BLOCK, ENOMEM }, { ERROR_BAD_ENVIRONMENT, E2BIG }, |
| { ERROR_BAD_FORMAT, ENOEXEC }, { ERROR_INVALID_ACCESS, EINVAL }, |
| { ERROR_INVALID_DATA, EINVAL }, { ERROR_INVALID_DRIVE, ENOENT }, |
| { ERROR_CURRENT_DIRECTORY, EACCES }, { ERROR_NOT_SAME_DEVICE, EXDEV }, |
| { ERROR_NO_MORE_FILES, ENOENT }, { ERROR_LOCK_VIOLATION, EACCES }, |
| { ERROR_BAD_NETPATH, ENOENT }, { ERROR_NETWORK_ACCESS_DENIED, EACCES }, |
| { ERROR_BAD_NET_NAME, ENOENT }, { ERROR_FILE_EXISTS, EEXIST }, |
| { ERROR_CANNOT_MAKE, EACCES }, { ERROR_FAIL_I24, EACCES }, |
| { ERROR_INVALID_PARAMETER, EINVAL }, { ERROR_NO_PROC_SLOTS, EAGAIN }, |
| { ERROR_DRIVE_LOCKED, EACCES }, { ERROR_BROKEN_PIPE, EPIPE }, |
| { ERROR_DISK_FULL, ENOSPC }, { ERROR_INVALID_TARGET_HANDLE, EBADF }, |
| { ERROR_INVALID_HANDLE, EINVAL }, { ERROR_WAIT_NO_CHILDREN, ECHILD }, |
| { ERROR_CHILD_NOT_COMPLETE, ECHILD }, { ERROR_DIRECT_ACCESS_HANDLE, EBADF }, |
| { ERROR_NEGATIVE_SEEK, EINVAL }, { ERROR_SEEK_ON_DEVICE, EACCES }, |
| { ERROR_DIR_NOT_EMPTY, ENOTEMPTY }, { ERROR_NOT_LOCKED, EACCES }, |
| { ERROR_BAD_PATHNAME, ENOENT }, { ERROR_MAX_THRDS_REACHED, EAGAIN }, |
| { ERROR_LOCK_FAILED, EACCES }, { ERROR_ALREADY_EXISTS, EEXIST }, |
| { ERROR_FILENAME_EXCED_RANGE, ENOENT }, { ERROR_NESTING_NOT_ALLOWED, EAGAIN }, |
| { ERROR_NOT_ENOUGH_QUOTA, ENOMEM }, { 0, -1 } |
| }; |
| |
| _CRTIMP __int64 __cdecl _lseeki64(int fh,__int64 pos,int mthd); |
| __int64 __cdecl _ftelli64(FILE *str); |
| void mingw_dosmaperr (unsigned long oserrno); |
| int __cdecl _flush (FILE *str); |
| |
| int __cdecl _flush (FILE *str) |
| { |
| FILE *stream; |
| int rc = 0; /* assume good return */ |
| __int64 nchar; |
| |
| stream = str; |
| if ((stream->_flag & (_IOREAD | _IOWRT)) == _IOWRT && bigbuf(stream) |
| && (nchar = (__int64) (stream->_ptr - stream->_base)) > 0ll) |
| { |
| if ( _write(_fileno(stream), stream->_base, nchar) == nchar) { |
| if (_IORW & stream->_flag) |
| stream->_flag &= ~_IOWRT; |
| } else { |
| stream->_flag |= _IOERR; |
| rc = EOF; |
| } |
| } |
| stream->_ptr = stream->_base; |
| stream->_cnt = 0ll; |
| return rc; |
| } |
| |
| int fseeko64 (FILE* stream, _off64_t offset, int whence) |
| { |
| fpos_t pos; |
| if (whence == SEEK_CUR) |
| { |
| /* If stream is invalid, fgetpos sets errno. */ |
| if (fgetpos (stream, &pos)) |
| return (-1); |
| pos += (fpos_t) offset; |
| } |
| else if (whence == SEEK_END) |
| { |
| /* If writing, we need to flush before getting file length. */ |
| fflush (stream); |
| pos = (fpos_t) (_filelengthi64 (_fileno (stream)) + offset); |
| } |
| else if (whence == SEEK_SET) |
| pos = (fpos_t) offset; |
| else |
| { |
| errno = EINVAL; |
| return (-1); |
| } |
| return fsetpos (stream, &pos); |
| } |
| |
| int __cdecl _fseeki64(FILE *str,__int64 offset,int whence) |
| { |
| FILE *stream; |
| /* Init stream pointer */ |
| stream = str; |
| errno=0; |
| if(!stream || ((whence != SEEK_SET) && (whence != SEEK_CUR) && (whence != SEEK_END))) |
| { |
| errno=EINVAL; |
| return -1; |
| } |
| /* Clear EOF flag */ |
| stream->_flag &= ~_IOEOF; |
| |
| if (whence == SEEK_CUR) { |
| offset += _ftelli64(stream); |
| whence = SEEK_SET; |
| } |
| /* Flush buffer as necessary */ |
| _flush(stream); |
| |
| /* If file opened for read/write, clear flags since we don't know |
| what the user is going to do next. If the file was opened for |
| read access only, decrease _bufsiz so that the next _filbuf |
| won't cost quite so much */ |
| |
| if (stream->_flag & _IORW) |
| stream->_flag &= ~(_IOWRT|_IOREAD); |
| else if ( (stream->_flag & _IOREAD) && (stream->_flag & _IOMYBUF) && |
| !(stream->_flag & _IOSETVBUF) ) |
| stream->_bufsiz = _SMALL_BUFSIZ; |
| |
| /* Seek to the desired locale and return. */ |
| |
| return (_lseeki64(_fileno(stream), offset, whence) == -1ll ? -1 : 0); |
| } |
| |
| __int64 __cdecl _ftelli64(FILE *str) |
| { |
| FILE *stream; |
| size_t offset; |
| __int64 filepos; |
| register char *p; |
| char *max; |
| int fd; |
| size_t rdcnt = 0; |
| |
| errno=0; |
| stream = str; |
| fd = _fileno(stream); |
| if (stream->_cnt < 0ll) stream->_cnt = 0ll; |
| if ((filepos = _lseeki64(fd, 0ll, SEEK_CUR)) < 0L) |
| return -1ll; |
| |
| if (!bigbuf(stream)) /* _IONBF or no buffering designated */ |
| return (filepos - (__int64) stream->_cnt); |
| |
| offset = (size_t)(stream->_ptr - stream->_base); |
| |
| if (stream->_flag & (_IOWRT|_IOREAD)) |
| { |
| if (_osfile(fd) & FTEXT) |
| for (p = stream->_base; p < stream->_ptr; p++) |
| if (*p == '\n') /* adjust for '\r' */ |
| offset++; |
| } |
| else if (!(stream->_flag & _IORW)) { |
| errno=EINVAL; |
| return -1ll; |
| } |
| if (filepos == 0ll) |
| return ((__int64)offset); |
| |
| if (stream->_flag & _IOREAD) /* go to preceding sector */ |
| { |
| if (stream->_cnt == 0ll) /* filepos holds correct location */ |
| offset = 0ll; |
| else |
| { |
| rdcnt = ((size_t) stream->_cnt) + ((size_t) (size_t)(stream->_ptr - stream->_base)); |
| if (_osfile(fd) & FTEXT) { |
| if (_lseeki64(fd, 0ll, SEEK_END) == filepos) { |
| max = stream->_base + rdcnt; |
| for (p = stream->_base; p < max; p++) |
| if (*p == '\n') /* adjust for '\r' */ |
| rdcnt++; |
| if (stream->_flag & _IOCTRLZ) |
| ++rdcnt; |
| } else { |
| _lseeki64(fd, filepos, SEEK_SET); |
| if ( (rdcnt <= _SMALL_BUFSIZ) && (stream->_flag & _IOMYBUF) && |
| !(stream->_flag & _IOSETVBUF)) |
| rdcnt = _SMALL_BUFSIZ; |
| else |
| rdcnt = stream->_bufsiz; |
| if (_osfile(fd) & FCRLF) |
| ++rdcnt; |
| } |
| } /* end if FTEXT */ |
| } |
| filepos -= (__int64)rdcnt; |
| } /* end else stream->_cnt != 0 */ |
| return (filepos + (__int64)offset); |
| } |
| |
| void mingw_dosmaperr (unsigned long oserrno) |
| { |
| size_t i; |
| |
| _doserrno = oserrno; /* set _doserrno */ |
| /* check the table for the OS error code */ |
| i = 0; |
| do { |
| if (oserrno == local_errtab[i].oscode) |
| { |
| errno = local_errtab[i].errnocode; |
| return; |
| } |
| } while (local_errtab[++i].errnocode != -1); |
| if (oserrno >= ERROR_WRITE_PROTECT && oserrno <= ERROR_SHARING_BUFFER_EXCEEDED) |
| errno = EACCES; |
| else if (oserrno >= ERROR_INVALID_STARTING_CODESEG && oserrno <= ERROR_INFLOOP_IN_RELOC_CHAIN) |
| errno = ENOEXEC; |
| else |
| errno = EINVAL; |
| } |
