1 /***************************************************************************
2 * Copyright (C) 2007 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) any later version. *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
19 ***************************************************************************/
25 #include "replacements.h"
34 #include <sys/types.h>
39 int fileio_close(fileio_t
*fileio
);
40 int fileio_dispatch_read(fileio_t
*fileio
, u32 size
, u8
*buffer
, u32
*size_read
);
42 int fileio_open_local(fileio_t
*fileio
)
44 fileio_local_t
*fileio_local
= malloc(sizeof(fileio_local_t
));
47 switch (fileio
->access
)
55 case FILEIO_READWRITE
:
61 case FILEIO_APPENDREAD
:
66 ERROR("BUG: access neither read, write nor readwrite");
67 return ERROR_INVALID_ARGUMENTS
;
70 /* win32 always opens in binary mode */
72 if (fileio
->type
== FILEIO_BINARY
)
78 if (!(fileio_local
->file
= fopen(fileio
->url
, access
)))
81 snprintf(fileio
->error_str
, FILEIO_MAX_ERROR_STRING
, "couldn't open %s", fileio
->url
);
82 return ERROR_FILEIO_OPERATION_FAILED
;
85 if ((fileio
->access
!= FILEIO_WRITE
) || (fileio
->access
== FILEIO_READWRITE
))
87 /* NB! Here we use fseek() instead of stat(), since stat is a
88 * more advanced operation that might not apply to e.g. a disk path
89 * that refers to e.g. a tftp client */
92 result
= fseek(fileio_local
->file
, 0, SEEK_END
);
94 fileio
->size
= ftell(fileio_local
->file
);
96 result2
= fseek(fileio_local
->file
, 0, SEEK_SET
);
98 if ((fileio
->size
< 0) || (result
< 0) || (result2
< 0))
100 fileio_close(fileio
);
101 return ERROR_FILEIO_OPERATION_FAILED
;
109 fileio
->location_private
= fileio_local
;
114 int fileio_open(fileio_t
*fileio
, char *url
, enum fileio_access access
, enum fileio_type type
)
116 int retval
= ERROR_OK
;
117 char *resource_identifier
= NULL
;
119 /* try to identify file location. We only hijack the file paths we understand, the rest is
120 * passed on to the OS which might implement e.g. tftp via a mounted tftp device.
122 if ((resource_identifier
= strstr(url
, "bootp://")) && (resource_identifier
== url
))
124 ERROR("bootp resource location isn't supported yet");
125 return ERROR_FILEIO_RESOURCE_TYPE_UNKNOWN
;
129 /* default to local files */
130 fileio
->location
= FILEIO_LOCAL
;
134 fileio
->access
= access
;
135 fileio
->url
= strdup(url
);
137 switch (fileio
->location
)
140 retval
= fileio_open_local(fileio
);
143 ERROR("BUG: should never get here");
147 if (retval
!= ERROR_OK
)
153 int fileio_close_local(fileio_t
*fileio
)
156 fileio_local_t
*fileio_local
= fileio
->location_private
;
158 if (fileio
->location_private
== NULL
)
160 snprintf(fileio
->error_str
, FILEIO_MAX_ERROR_STRING
, "couldn't close %s: ", fileio
->url
);
161 return ERROR_FILEIO_OPERATION_FAILED
;
164 if ((retval
= fclose(fileio_local
->file
)) != 0)
168 snprintf(fileio
->error_str
, FILEIO_MAX_ERROR_STRING
, "BUG: fileio_local->file not a valid file descriptor");
172 snprintf(fileio
->error_str
, FILEIO_MAX_ERROR_STRING
, "couldn't close %s: %s", fileio
->url
, strerror(errno
));
175 return ERROR_FILEIO_OPERATION_FAILED
;
178 free(fileio
->location_private
);
179 fileio
->location_private
= NULL
;
184 int fileio_close(fileio_t
*fileio
)
188 switch (fileio
->location
)
191 retval
= fileio_close_local(fileio
);
194 ERROR("BUG: should never get here");
195 retval
= ERROR_FILEIO_OPERATION_FAILED
;
198 if (retval
!= ERROR_OK
)
207 int fileio_seek_local(fileio_t
*fileio
, u32 position
)
210 fileio_local_t
*fileio_local
= fileio
->location_private
;
212 if ((retval
= fseek(fileio_local
->file
, position
, SEEK_SET
)) != 0)
214 snprintf(fileio
->error_str
, FILEIO_MAX_ERROR_STRING
, "couldn't seek file %s: %s", fileio
->url
, strerror(errno
));
215 return ERROR_FILEIO_OPERATION_FAILED
;
221 int fileio_seek(fileio_t
*fileio
, u32 position
)
223 switch (fileio
->location
)
226 return fileio_seek_local(fileio
, position
);
229 ERROR("BUG: should never get here");
235 int fileio_local_read(fileio_t
*fileio
, u32 size
, u8
*buffer
, u32
*size_read
)
237 fileio_local_t
*fileio_local
= fileio
->location_private
;
239 *size_read
= fread(buffer
, 1, size
, fileio_local
->file
);
244 int fileio_read(fileio_t
*fileio
, u32 size
, u8
*buffer
, u32
*size_read
)
246 switch (fileio
->location
)
249 return fileio_local_read(fileio
, size
, buffer
, size_read
);
252 ERROR("BUG: should never get here");
257 int fileio_read_u32(fileio_t
*fileio
, u32
*data
)
263 switch (fileio
->location
)
266 if ((retval
= fileio_local_read(fileio
, 4, buf
, &size_read
)) != ERROR_OK
)
268 *data
= be_to_h_u32(buf
);
271 ERROR("BUG: should never get here");
278 int fileio_local_fgets(fileio_t
*fileio
, u32 size
, u8
*buffer
)
280 fileio_local_t
*fileio_local
= fileio
->location_private
;
282 if( fgets(buffer
, size
, fileio_local
->file
) == NULL
)
283 return ERROR_FILEIO_OPERATION_FAILED
;
288 int fileio_fgets(fileio_t
*fileio
, u32 size
, u8
*buffer
)
290 switch (fileio
->location
)
293 return fileio_local_fgets(fileio
, size
, buffer
);
296 ERROR("BUG: should never get here");
301 int fileio_local_write(fileio_t
*fileio
, u32 size
, u8
*buffer
, u32
*size_written
)
303 fileio_local_t
*fileio_local
= fileio
->location_private
;
305 *size_written
= fwrite(buffer
, 1, size
, fileio_local
->file
);
310 int fileio_write(fileio_t
*fileio
, u32 size
, u8
*buffer
, u32
*size_written
)
314 switch (fileio
->location
)
317 retval
= fileio_local_write(fileio
, size
, buffer
, size_written
);
320 ERROR("BUG: should never get here");
324 if (retval
== ERROR_OK
)
325 fileio
->size
+= *size_written
;
330 int fileio_write_u32(fileio_t
*fileio
, u32 data
)
336 h_u32_to_be(buf
, data
);
338 switch (fileio
->location
)
341 if ((retval
= fileio_local_write(fileio
, 4, buf
, &size_written
)) != ERROR_OK
)
345 ERROR("BUG: should never get here");
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