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 fileio
->location_private
= fileio_local
;
49 switch (fileio
->access
)
57 case FILEIO_READWRITE
:
63 case FILEIO_APPENDREAD
:
68 ERROR("BUG: access neither read, write nor readwrite");
69 return ERROR_INVALID_ARGUMENTS
;
72 /* win32 always opens in binary mode */
74 if (fileio
->type
== FILEIO_BINARY
)
80 if (!(fileio_local
->file
= fopen(fileio
->url
, access
)))
83 snprintf(fileio
->error_str
, FILEIO_MAX_ERROR_STRING
, "couldn't open %s", fileio
->url
);
84 return ERROR_FILEIO_OPERATION_FAILED
;
87 if ((fileio
->access
!= FILEIO_WRITE
) || (fileio
->access
== FILEIO_READWRITE
))
89 // NB! Here we use fseek() instead of stat(), since stat is a
90 // more advanced operation that might not apply to e.g. a disk path
91 // that refers to e.g. a tftp client
92 int result
=fseek(fileio_local
->file
, 0, SEEK_END
);
94 fileio
->size
= ftell(fileio_local
->file
);
96 int 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
;
112 int fileio_open(fileio_t
*fileio
, char *url
, enum fileio_access access
, enum fileio_type type
)
114 int retval
= ERROR_OK
;
115 char *resource_identifier
= NULL
;
117 /* try to identify file location. We only hijack the file paths we understand, the rest is
118 * passed on to the OS which might implement e.g. tftp via a mounted tftp device.
120 if ((resource_identifier
= strstr(url
, "bootp://")) && (resource_identifier
== url
))
122 ERROR("bootp resource location isn't supported yet");
123 return ERROR_FILEIO_RESOURCE_TYPE_UNKNOWN
;
127 /* default to local files */
128 fileio
->location
= FILEIO_LOCAL
;
132 fileio
->access
= access
;
133 fileio
->url
= strdup(url
);
135 switch (fileio
->location
)
138 retval
= fileio_open_local(fileio
);
141 ERROR("BUG: should never get here");
145 if (retval
!= ERROR_OK
)
151 int fileio_close_local(fileio_t
*fileio
)
154 fileio_local_t
*fileio_local
= fileio
->location_private
;
156 if (fileio
->location_private
== NULL
)
158 snprintf(fileio
->error_str
, FILEIO_MAX_ERROR_STRING
, "couldn't close %s: ", fileio
->url
);
159 return ERROR_FILEIO_OPERATION_FAILED
;
162 if ((retval
= fclose(fileio_local
->file
)) != 0)
166 snprintf(fileio
->error_str
, FILEIO_MAX_ERROR_STRING
, "BUG: fileio_local->file not a valid file descriptor");
170 snprintf(fileio
->error_str
, FILEIO_MAX_ERROR_STRING
, "couldn't close %s: %s", fileio
->url
, strerror(errno
));
173 return ERROR_FILEIO_OPERATION_FAILED
;
176 free(fileio
->location_private
);
177 fileio
->location_private
= NULL
;
182 int fileio_close(fileio_t
*fileio
)
186 switch (fileio
->location
)
189 retval
= fileio_close_local(fileio
);
192 ERROR("BUG: should never get here");
193 retval
= ERROR_FILEIO_OPERATION_FAILED
;
196 if (retval
!= ERROR_OK
)
205 int fileio_seek_local(fileio_t
*fileio
, u32 position
)
208 fileio_local_t
*fileio_local
= fileio
->location_private
;
210 if ((retval
= fseek(fileio_local
->file
, position
, SEEK_SET
)) != 0)
212 snprintf(fileio
->error_str
, FILEIO_MAX_ERROR_STRING
, "couldn't seek file %s: %s", fileio
->url
, strerror(errno
));
213 return ERROR_FILEIO_OPERATION_FAILED
;
219 int fileio_seek(fileio_t
*fileio
, u32 position
)
221 switch (fileio
->location
)
224 return fileio_seek_local(fileio
, position
);
227 ERROR("BUG: should never get here");
233 int fileio_local_read(fileio_t
*fileio
, u32 size
, u8
*buffer
, u32
*size_read
)
235 fileio_local_t
*fileio_local
= fileio
->location_private
;
237 *size_read
= fread(buffer
, 1, size
, fileio_local
->file
);
242 int fileio_read(fileio_t
*fileio
, u32 size
, u8
*buffer
, u32
*size_read
)
244 switch (fileio
->location
)
247 return fileio_local_read(fileio
, size
, buffer
, size_read
);
250 ERROR("BUG: should never get here");
255 int fileio_read_u32(fileio_t
*fileio
, u32
*data
)
261 switch (fileio
->location
)
264 if ((retval
= fileio_local_read(fileio
, 4, buf
, &size_read
)) != ERROR_OK
)
266 *data
= be_to_h_u32(buf
);
269 ERROR("BUG: should never get here");
276 int fileio_local_fgets(fileio_t
*fileio
, u32 size
, u8
*buffer
)
278 fileio_local_t
*fileio_local
= fileio
->location_private
;
280 if( fgets(buffer
, size
, fileio_local
->file
) == NULL
)
281 return ERROR_FILEIO_OPERATION_FAILED
;
286 int fileio_fgets(fileio_t
*fileio
, u32 size
, u8
*buffer
)
288 switch (fileio
->location
)
291 return fileio_local_fgets(fileio
, size
, buffer
);
294 ERROR("BUG: should never get here");
299 int fileio_local_write(fileio_t
*fileio
, u32 size
, u8
*buffer
, u32
*size_written
)
301 fileio_local_t
*fileio_local
= fileio
->location_private
;
303 *size_written
= fwrite(buffer
, 1, size
, fileio_local
->file
);
308 int fileio_write(fileio_t
*fileio
, u32 size
, u8
*buffer
, u32
*size_written
)
312 switch (fileio
->location
)
315 retval
= fileio_local_write(fileio
, size
, buffer
, size_written
);
318 ERROR("BUG: should never get here");
322 if (retval
== ERROR_OK
)
323 fileio
->size
+= *size_written
;
328 int fileio_write_u32(fileio_t
*fileio
, u32 data
)
334 h_u32_to_be(buf
, data
);
336 switch (fileio
->location
)
339 if ((retval
= fileio_local_write(fileio
, 4, buf
, &size_written
)) != ERROR_OK
)
343 ERROR("BUG: should never get here");
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