Cleanup in elf.c with .bss section clean; adm command mounts cdrom instead of floppy...
[ZeXOS.git] / libc / stdio / fwrite.c
blob8424ad150032d90285fa41e66afde3197b475f44
1 /*
2 * ZeX/OS
3 * Copyright (C) 2009 Tomas 'ZeXx86' Jedrzejek (zexx86@zexos.org)
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 3 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, see <http://www.gnu.org/licenses/>.
20 #include <errno.h>
21 #include <stdio.h>
22 #include <fcntl.h>
23 #include <stdlib.h>
25 size_t fwrite (const void *ptr, size_t size, size_t nmemb, FILE *stream)
27 if (!stream)
28 goto err;
30 if (stream->mode & O_RDONLY)
31 goto err;
33 int fd = stream->fd;
35 int len = write (fd, (void *) ptr, size * nmemb);
37 if (!len)
38 goto err;
40 stream->off += len;
42 return len;
43 err:
44 errno_update ();
46 return 0;