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 if ((fileio
->access
!= FILEIO_WRITE
) && (fileio
->access
!= FILEIO_READWRITE
))
51 if (stat(fileio
->url
, &fileio_local
->file_stat
) == -1)
54 snprintf(fileio
->error_str
, FILEIO_MAX_ERROR_STRING
,
55 "couldn't stat() %s: %s", fileio
->url
, strerror(errno
));
56 return ERROR_FILEIO_NOT_FOUND
;
59 if (S_ISDIR(fileio_local
->file_stat
.st_mode
))
62 snprintf(fileio
->error_str
, FILEIO_MAX_ERROR_STRING
, "%s is a directory", fileio
->url
);
63 return ERROR_FILEIO_NOT_FOUND
;
67 switch (fileio
->access
)
75 case FILEIO_READWRITE
:
81 case FILEIO_APPENDREAD
:
86 ERROR("BUG: access neither read, write nor readwrite");
87 return ERROR_INVALID_ARGUMENTS
;
90 if (fileio
->access
== FILEIO_READ
)
92 if (fileio_local
->file_stat
.st_size
== 0)
94 /* tried to open an empty file for reading */
96 snprintf(fileio
->error_str
, FILEIO_MAX_ERROR_STRING
, "empty file %s", fileio
->url
);
97 return ERROR_FILEIO_OPERATION_FAILED
;
101 if (fileio
->type
== FILEIO_BINARY
)
104 if (!(fileio_local
->file
= fopen(fileio
->url
, access
)))
107 snprintf(fileio
->error_str
, FILEIO_MAX_ERROR_STRING
, "couldn't open %s", fileio
->url
);
108 return ERROR_FILEIO_OPERATION_FAILED
;
111 if ((fileio
->access
!= FILEIO_WRITE
) || (fileio
->access
== FILEIO_READWRITE
))
113 fileio
->size
= fileio_local
->file_stat
.st_size
;
123 int fileio_open(fileio_t
*fileio
, char *url
, enum fileio_access access
, enum fileio_type type
)
125 int retval
= ERROR_OK
;
126 char *resource_identifier
= NULL
;
128 /* try to identify file location */
129 if ((resource_identifier
= strstr(url
, "bootp://")) && (resource_identifier
== url
))
131 ERROR("bootp resource location isn't supported yet");
132 return ERROR_FILEIO_RESOURCE_TYPE_UNKNOWN
;
134 else if ((resource_identifier
= strstr(url
, "tftp://")) && (resource_identifier
== url
))
136 ERROR("tftp resource location isn't supported yet");
137 return ERROR_FILEIO_RESOURCE_TYPE_UNKNOWN
;
141 /* default to local files */
142 fileio
->location
= FILEIO_LOCAL
;
146 fileio
->access
= access
;
147 fileio
->url
= strdup(url
);
149 switch (fileio
->location
)
152 retval
= fileio_open_local(fileio
);
155 ERROR("BUG: should never get here");
159 if (retval
!= ERROR_OK
)
165 int fileio_close_local(fileio_t
*fileio
)
168 fileio_local_t
*fileio_local
= fileio
->location_private
;
170 if ((retval
= fclose(fileio_local
->file
)) != 0)
174 snprintf(fileio
->error_str
, FILEIO_MAX_ERROR_STRING
, "BUG: fileio_local->file not a valid file descriptor");
178 snprintf(fileio
->error_str
, FILEIO_MAX_ERROR_STRING
, "couldn't close %s: %s", fileio
->url
, strerror(errno
));
181 return ERROR_FILEIO_OPERATION_FAILED
;
184 free(fileio
->location_private
);
189 int fileio_close(fileio_t
*fileio
)
193 switch (fileio
->location
)
196 retval
= fileio_close_local(fileio
);
199 ERROR("BUG: should never get here");
200 retval
= ERROR_FILEIO_OPERATION_FAILED
;
203 if (retval
!= ERROR_OK
)
211 int fileio_seek_local(fileio_t
*fileio
, u32 position
)
214 fileio_local_t
*fileio_local
= fileio
->location_private
;
216 if ((retval
= fseek(fileio_local
->file
, position
, SEEK_SET
)) != 0)
218 snprintf(fileio
->error_str
, FILEIO_MAX_ERROR_STRING
, "couldn't seek file %s: %s", fileio
->url
, strerror(errno
));
219 return ERROR_FILEIO_OPERATION_FAILED
;
225 int fileio_seek(fileio_t
*fileio
, u32 position
)
227 switch (fileio
->location
)
230 return fileio_seek_local(fileio
, position
);
233 ERROR("BUG: should never get here");
239 int fileio_local_read(fileio_t
*fileio
, u32 size
, u8
*buffer
, u32
*size_read
)
241 fileio_local_t
*fileio_local
= fileio
->location_private
;
243 *size_read
= fread(buffer
, 1, size
, fileio_local
->file
);
248 int fileio_read(fileio_t
*fileio
, u32 size
, u8
*buffer
, u32
*size_read
)
250 switch (fileio
->location
)
253 return fileio_local_read(fileio
, size
, buffer
, size_read
);
256 ERROR("BUG: should never get here");
261 int fileio_local_write(fileio_t
*fileio
, u32 size
, u8
*buffer
, u32
*size_written
)
263 fileio_local_t
*fileio_local
= fileio
->location_private
;
265 *size_written
= fwrite(buffer
, 1, size
, fileio_local
->file
);
270 int fileio_write(fileio_t
*fileio
, u32 size
, u8
*buffer
, u32
*size_written
)
272 switch (fileio
->location
)
275 return fileio_local_write(fileio
, size
, buffer
, size_written
);
278 ERROR("BUG: should never get here");
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