Jonathan Yong | 4ba0f9e | 2010-05-02 11:57:31 +0000 | [diff] [blame] | 1 | /** |
| 2 | * This file has no copyright assigned and is placed in the Public Domain. |
Rafaël Carré | 8a67ab4 | 2012-06-28 15:40:59 +0000 | [diff] [blame] | 3 | * This file is part of the mingw-w64 runtime package. |
Jonathan Yong | 4ba0f9e | 2010-05-02 11:57:31 +0000 | [diff] [blame] | 4 | * No warranty is given; refer to the file DISCLAIMER.PD within this package. |
| 5 | */ |
| 6 | #include <stdio.h> |
| 7 | #include <io.h> |
| 8 | #include <errno.h> |
| 9 | #include <windows.h> |
| 10 | #include <internal.h> |
| 11 | |
| 12 | struct oserr_map { |
| 13 | unsigned long oscode; /* OS values */ |
| 14 | int errnocode; /* System V codes */ |
| 15 | }; |
| 16 | |
| 17 | typedef union doubleint { |
| 18 | __int64 bigint; |
| 19 | struct { |
| 20 | unsigned long lowerhalf; |
| 21 | long upperhalf; |
| 22 | } twoints; |
| 23 | } DINT; |
| 24 | |
| 25 | #define _IOYOURBUF 0x0100 |
| 26 | #define _IOSETVBUF 0x0400 |
| 27 | #define _IOFEOF 0x0800 |
| 28 | #define _IOFLRTN 0x1000 |
| 29 | #define _IOCTRLZ 0x2000 |
| 30 | #define _IOCOMMIT 0x4000 |
| 31 | |
| 32 | /* General use macros */ |
| 33 | |
| 34 | #define inuse(s) ((s)->_flag & (_IOREAD|_IOWRT|_IORW)) |
| 35 | #define mbuf(s) ((s)->_flag & _IOMYBUF) |
| 36 | #define nbuf(s) ((s)->_flag & _IONBF) |
| 37 | #define ybuf(s) ((s)->_flag & _IOYOURBUF) |
| 38 | #define bigbuf(s) ((s)->_flag & (_IOMYBUF|_IOYOURBUF)) |
| 39 | #define anybuf(s) ((s)->_flag & (_IOMYBUF|_IONBF|_IOYOURBUF)) |
| 40 | |
| 41 | #define _INTERNAL_BUFSIZ 4096 |
| 42 | #define _SMALL_BUFSIZ 512 |
| 43 | |
| 44 | #define FOPEN 0x01 /* file handle open */ |
| 45 | #define FEOFLAG 0x02 /* end of file has been encountered */ |
| 46 | #define FCRLF 0x04 /* CR-LF across read buffer (in text mode) */ |
| 47 | #define FPIPE 0x08 /* file handle refers to a pipe */ |
| 48 | #define FNOINHERIT 0x10 /* file handle opened _O_NOINHERIT */ |
| 49 | #define FAPPEND 0x20 /* file handle opened O_APPEND */ |
| 50 | #define FDEV 0x40 /* file handle refers to device */ |
| 51 | #define FTEXT 0x80 /* file handle is in text mode */ |
| 52 | |
| 53 | static struct oserr_map local_errtab[] = { |
| 54 | { ERROR_INVALID_FUNCTION, EINVAL }, { ERROR_FILE_NOT_FOUND, ENOENT }, |
| 55 | { ERROR_PATH_NOT_FOUND, ENOENT }, { ERROR_TOO_MANY_OPEN_FILES, EMFILE }, |
| 56 | { ERROR_ACCESS_DENIED, EACCES }, { ERROR_INVALID_HANDLE, EBADF }, |
| 57 | { ERROR_ARENA_TRASHED, ENOMEM }, { ERROR_NOT_ENOUGH_MEMORY, ENOMEM }, |
| 58 | { ERROR_INVALID_BLOCK, ENOMEM }, { ERROR_BAD_ENVIRONMENT, E2BIG }, |
| 59 | { ERROR_BAD_FORMAT, ENOEXEC }, { ERROR_INVALID_ACCESS, EINVAL }, |
| 60 | { ERROR_INVALID_DATA, EINVAL }, { ERROR_INVALID_DRIVE, ENOENT }, |
| 61 | { ERROR_CURRENT_DIRECTORY, EACCES }, { ERROR_NOT_SAME_DEVICE, EXDEV }, |
| 62 | { ERROR_NO_MORE_FILES, ENOENT }, { ERROR_LOCK_VIOLATION, EACCES }, |
| 63 | { ERROR_BAD_NETPATH, ENOENT }, { ERROR_NETWORK_ACCESS_DENIED, EACCES }, |
| 64 | { ERROR_BAD_NET_NAME, ENOENT }, { ERROR_FILE_EXISTS, EEXIST }, |
| 65 | { ERROR_CANNOT_MAKE, EACCES }, { ERROR_FAIL_I24, EACCES }, |
| 66 | { ERROR_INVALID_PARAMETER, EINVAL }, { ERROR_NO_PROC_SLOTS, EAGAIN }, |
| 67 | { ERROR_DRIVE_LOCKED, EACCES }, { ERROR_BROKEN_PIPE, EPIPE }, |
| 68 | { ERROR_DISK_FULL, ENOSPC }, { ERROR_INVALID_TARGET_HANDLE, EBADF }, |
| 69 | { ERROR_INVALID_HANDLE, EINVAL }, { ERROR_WAIT_NO_CHILDREN, ECHILD }, |
| 70 | { ERROR_CHILD_NOT_COMPLETE, ECHILD }, { ERROR_DIRECT_ACCESS_HANDLE, EBADF }, |
| 71 | { ERROR_NEGATIVE_SEEK, EINVAL }, { ERROR_SEEK_ON_DEVICE, EACCES }, |
| 72 | { ERROR_DIR_NOT_EMPTY, ENOTEMPTY }, { ERROR_NOT_LOCKED, EACCES }, |
| 73 | { ERROR_BAD_PATHNAME, ENOENT }, { ERROR_MAX_THRDS_REACHED, EAGAIN }, |
| 74 | { ERROR_LOCK_FAILED, EACCES }, { ERROR_ALREADY_EXISTS, EEXIST }, |
| 75 | { ERROR_FILENAME_EXCED_RANGE, ENOENT }, { ERROR_NESTING_NOT_ALLOWED, EAGAIN }, |
| 76 | { ERROR_NOT_ENOUGH_QUOTA, ENOMEM }, { 0, -1 } |
| 77 | }; |
| 78 | |
| 79 | _CRTIMP __int64 __cdecl _lseeki64(int fh,__int64 pos,int mthd); |
| 80 | __int64 __cdecl _ftelli64(FILE *str); |
| 81 | void mingw_dosmaperr (unsigned long oserrno); |
| 82 | int __cdecl _flush (FILE *str); |
| 83 | |
| 84 | int __cdecl _flush (FILE *str) |
| 85 | { |
| 86 | FILE *stream; |
| 87 | int rc = 0; /* assume good return */ |
| 88 | __int64 nchar; |
| 89 | |
| 90 | stream = str; |
| 91 | if ((stream->_flag & (_IOREAD | _IOWRT)) == _IOWRT && bigbuf(stream) |
| 92 | && (nchar = (__int64) (stream->_ptr - stream->_base)) > 0ll) |
| 93 | { |
| 94 | if ( _write(_fileno(stream), stream->_base, nchar) == nchar) { |
| 95 | if (_IORW & stream->_flag) |
| 96 | stream->_flag &= ~_IOWRT; |
| 97 | } else { |
| 98 | stream->_flag |= _IOERR; |
| 99 | rc = EOF; |
| 100 | } |
| 101 | } |
| 102 | stream->_ptr = stream->_base; |
| 103 | stream->_cnt = 0ll; |
| 104 | return rc; |
| 105 | } |
| 106 | |
| 107 | int fseeko64 (FILE* stream, _off64_t offset, int whence) |
| 108 | { |
| 109 | fpos_t pos; |
| 110 | if (whence == SEEK_CUR) |
| 111 | { |
| 112 | /* If stream is invalid, fgetpos sets errno. */ |
| 113 | if (fgetpos (stream, &pos)) |
| 114 | return (-1); |
| 115 | pos += (fpos_t) offset; |
| 116 | } |
| 117 | else if (whence == SEEK_END) |
| 118 | { |
| 119 | /* If writing, we need to flush before getting file length. */ |
| 120 | fflush (stream); |
| 121 | pos = (fpos_t) (_filelengthi64 (_fileno (stream)) + offset); |
| 122 | } |
| 123 | else if (whence == SEEK_SET) |
| 124 | pos = (fpos_t) offset; |
| 125 | else |
| 126 | { |
| 127 | errno = EINVAL; |
| 128 | return (-1); |
| 129 | } |
| 130 | return fsetpos (stream, &pos); |
| 131 | } |
| 132 | |
| 133 | int __cdecl _fseeki64(FILE *str,__int64 offset,int whence) |
| 134 | { |
| 135 | FILE *stream; |
| 136 | /* Init stream pointer */ |
| 137 | stream = str; |
| 138 | errno=0; |
| 139 | if(!stream || ((whence != SEEK_SET) && (whence != SEEK_CUR) && (whence != SEEK_END))) |
| 140 | { |
| 141 | errno=EINVAL; |
| 142 | return -1; |
| 143 | } |
| 144 | /* Clear EOF flag */ |
| 145 | stream->_flag &= ~_IOEOF; |
| 146 | |
| 147 | if (whence == SEEK_CUR) { |
| 148 | offset += _ftelli64(stream); |
| 149 | whence = SEEK_SET; |
| 150 | } |
| 151 | /* Flush buffer as necessary */ |
| 152 | _flush(stream); |
| 153 | |
| 154 | /* If file opened for read/write, clear flags since we don't know |
| 155 | what the user is going to do next. If the file was opened for |
| 156 | read access only, decrease _bufsiz so that the next _filbuf |
| 157 | won't cost quite so much */ |
| 158 | |
| 159 | if (stream->_flag & _IORW) |
| 160 | stream->_flag &= ~(_IOWRT|_IOREAD); |
| 161 | else if ( (stream->_flag & _IOREAD) && (stream->_flag & _IOMYBUF) && |
| 162 | !(stream->_flag & _IOSETVBUF) ) |
| 163 | stream->_bufsiz = _SMALL_BUFSIZ; |
| 164 | |
| 165 | /* Seek to the desired locale and return. */ |
| 166 | |
| 167 | return (_lseeki64(_fileno(stream), offset, whence) == -1ll ? -1 : 0); |
| 168 | } |
| 169 | |
| 170 | __int64 __cdecl _ftelli64(FILE *str) |
| 171 | { |
| 172 | FILE *stream; |
| 173 | size_t offset; |
| 174 | __int64 filepos; |
| 175 | register char *p; |
| 176 | char *max; |
| 177 | int fd; |
| 178 | size_t rdcnt = 0; |
| 179 | |
| 180 | errno=0; |
| 181 | stream = str; |
| 182 | fd = _fileno(stream); |
| 183 | if (stream->_cnt < 0ll) stream->_cnt = 0ll; |
| 184 | if ((filepos = _lseeki64(fd, 0ll, SEEK_CUR)) < 0L) |
| 185 | return -1ll; |
| 186 | |
| 187 | if (!bigbuf(stream)) /* _IONBF or no buffering designated */ |
| 188 | return (filepos - (__int64) stream->_cnt); |
| 189 | |
| 190 | offset = (size_t)(stream->_ptr - stream->_base); |
| 191 | |
| 192 | if (stream->_flag & (_IOWRT|_IOREAD)) |
| 193 | { |
| 194 | if (_osfile(fd) & FTEXT) |
| 195 | for (p = stream->_base; p < stream->_ptr; p++) |
| 196 | if (*p == '\n') /* adjust for '\r' */ |
| 197 | offset++; |
| 198 | } |
| 199 | else if (!(stream->_flag & _IORW)) { |
| 200 | errno=EINVAL; |
| 201 | return -1ll; |
| 202 | } |
| 203 | if (filepos == 0ll) |
| 204 | return ((__int64)offset); |
| 205 | |
| 206 | if (stream->_flag & _IOREAD) /* go to preceding sector */ |
| 207 | { |
| 208 | if (stream->_cnt == 0ll) /* filepos holds correct location */ |
| 209 | offset = 0ll; |
| 210 | else |
| 211 | { |
| 212 | rdcnt = ((size_t) stream->_cnt) + ((size_t) (size_t)(stream->_ptr - stream->_base)); |
| 213 | if (_osfile(fd) & FTEXT) { |
| 214 | if (_lseeki64(fd, 0ll, SEEK_END) == filepos) { |
| 215 | max = stream->_base + rdcnt; |
| 216 | for (p = stream->_base; p < max; p++) |
| 217 | if (*p == '\n') /* adjust for '\r' */ |
| 218 | rdcnt++; |
| 219 | if (stream->_flag & _IOCTRLZ) |
| 220 | ++rdcnt; |
| 221 | } else { |
| 222 | _lseeki64(fd, filepos, SEEK_SET); |
| 223 | if ( (rdcnt <= _SMALL_BUFSIZ) && (stream->_flag & _IOMYBUF) && |
| 224 | !(stream->_flag & _IOSETVBUF)) |
| 225 | rdcnt = _SMALL_BUFSIZ; |
| 226 | else |
| 227 | rdcnt = stream->_bufsiz; |
| 228 | if (_osfile(fd) & FCRLF) |
| 229 | ++rdcnt; |
| 230 | } |
| 231 | } /* end if FTEXT */ |
| 232 | } |
| 233 | filepos -= (__int64)rdcnt; |
| 234 | } /* end else stream->_cnt != 0 */ |
| 235 | return (filepos + (__int64)offset); |
| 236 | } |
| 237 | |
| 238 | void mingw_dosmaperr (unsigned long oserrno) |
| 239 | { |
| 240 | size_t i; |
| 241 | |
| 242 | _doserrno = oserrno; /* set _doserrno */ |
| 243 | /* check the table for the OS error code */ |
| 244 | i = 0; |
| 245 | do { |
| 246 | if (oserrno == local_errtab[i].oscode) |
| 247 | { |
| 248 | errno = local_errtab[i].errnocode; |
| 249 | return; |
| 250 | } |
| 251 | } while (local_errtab[++i].errnocode != -1); |
| 252 | if (oserrno >= ERROR_WRITE_PROTECT && oserrno <= ERROR_SHARING_BUFFER_EXCEEDED) |
| 253 | errno = EACCES; |
| 254 | else if (oserrno >= ERROR_INVALID_STARTING_CODESEG && oserrno <= ERROR_INFLOOP_IN_RELOC_CHAIN) |
| 255 | errno = ENOEXEC; |
| 256 | else |
| 257 | errno = EINVAL; |
| 258 | } |