Add KFile seek and size members support.

git-svn-id: https://src.develer.com/svnoss/bertos/trunk@4671 38d2e660-2303-0410-9eaa-f027e97ec537

diff --git a/bertos/emul/kfile_posix.c b/bertos/emul/kfile_posix.c
index 3bc657d689a4255ca84c7d77d4a9b2c351637ebd..d196c6aa7eadb5b23fb4d0b42c5a0341eae416b7 100644 (file)
--- a/bertos/emul/kfile_posix.c
+++ b/bertos/emul/kfile_posix.c
@@ -41,13 +41,18 @@
 static size_t kfile_posix_read(struct KFile *_fd, void *buf, size_t size)
 {
        KFilePosix *fd = KFILEPOSIX_CAST(_fd);
-       return fread(buf, sizeof(uint8_t), size, fd->fp);
+       size_t len = fread(buf, sizeof(uint8_t), size, fd->fp);
+       fd->fd.seek_pos += len;
+       return len;
 }
 
 static size_t kfile_posix_write(struct KFile *_fd, const void *buf, size_t size)
 {
        KFilePosix *fd = KFILEPOSIX_CAST(_fd);
-       return fwrite(buf, sizeof(uint8_t), size, fd->fp);
+       size_t len = fwrite(buf, sizeof(uint8_t), size, fd->fp);
+       fd->fd.seek_pos += len;
+       fd->fd.size = MAX(fd->fd.size, fd->fd.seek_pos);
+       return len;
 }
 
 static kfile_off_t kfile_posix_seek(struct KFile *_fd, kfile_off_t offset, KSeekMode whence)
@@ -73,7 +78,8 @@ static kfile_off_t kfile_posix_seek(struct KFile *_fd, kfile_off_t offset, KSeek
        if (err)
                return err;
 
-       return ftell(fd->fp);
+       fd->fd.seek_pos = ftell(fd->fp);
+       return fd->fd.seek_pos;
 }
 
 static int kfile_posix_close(struct KFile *_fd)
@@ -99,5 +105,8 @@ FILE *kfile_posix_init(KFilePosix *file, const char *filename, const char *mode)
        file->fd.flush = kfile_posix_flush;
 
        file->fp = fopen(filename, mode);
+       fseek(file->fp, 0, SEEK_END);
+       file->fd.size = ftell(file->fp);
+       fseek(file->fp, 0, SEEK_SET);
        return file->fp;
 }