4 * This file is part of BeRTOS.
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
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18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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21 * library without restriction. Specifically, if other files instantiate
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29 * Copyright 2009 Develer S.r.l. (http://www.develer.com/)
33 * \brief KFile interface implementation in Posix systems.
35 * \author Luca Ottaviano <lottaviano@develer.com>
38 #include <emul/kfile_posix.h>
41 static size_t kfile_posix_read(struct KFile *_fd, void *buf, size_t size)
43 KFilePosix *fd = KFILEPOSIX_CAST(_fd);
44 size_t len = fread(buf, sizeof(uint8_t), size, fd->fp);
45 fd->fd.seek_pos += len;
49 static size_t kfile_posix_write(struct KFile *_fd, const void *buf, size_t size)
51 KFilePosix *fd = KFILEPOSIX_CAST(_fd);
52 size_t len = fwrite(buf, sizeof(uint8_t), size, fd->fp);
53 fd->fd.seek_pos += len;
54 fd->fd.size = MAX(fd->fd.size, fd->fd.seek_pos);
58 static kfile_off_t kfile_posix_seek(struct KFile *_fd, kfile_off_t offset, KSeekMode whence)
60 KFilePosix *fd = KFILEPOSIX_CAST(_fd);
65 std_whence = SEEK_CUR;
68 std_whence = SEEK_END;
71 std_whence = SEEK_SET;
77 int err = fseek(fd->fp, offset, std_whence);
81 fd->fd.seek_pos = ftell(fd->fp);
82 return fd->fd.seek_pos;
85 static int kfile_posix_close(struct KFile *_fd)
87 KFilePosix *fd = KFILEPOSIX_CAST(_fd);
88 return fclose(fd->fp);
91 static int kfile_posix_flush(struct KFile *_fd)
93 KFilePosix *fd = KFILEPOSIX_CAST(_fd);
94 return fflush(fd->fp);
97 FILE *kfile_posix_init(KFilePosix *file, const char *filename, const char *mode)
99 memset(file, 0, sizeof(*file));
100 DB(file->fd._type = KFT_KFILEPOSIX);
101 file->fd.read = kfile_posix_read;
102 file->fd.write = kfile_posix_write;
103 file->fd.close = kfile_posix_close;
104 file->fd.seek = kfile_posix_seek;
105 file->fd.flush = kfile_posix_flush;
107 file->fp = fopen(filename, mode);
108 fseek(file->fp, 0, SEEK_END);
109 file->fd.size = ftell(file->fp);
110 fseek(file->fp, 0, SEEK_SET);