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fix and improve tftp_read.

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okuji committed 2000-02-25 06:13:50 +00:00
1 parent b9ff0c2f81
commit ab6cc80541
2 files changed
+19 -9
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netboot/fsys_tftp.c
+8 -9
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@@ -290,6 +290,7 @@ tftp_read (char *addr, int size)
if (filepos < saved_filepos)
{
/* Uggh.. FILEPOS has been moved backwards. So reopen the file. */
buf_read = 0;
buf_fill (1);
grub_memmove ((char *) &tp, (char *) &saved_tp, saved_len);
len = saved_len;
@@ -331,18 +332,16 @@ tftp_read (char *addr, int size)
size -= amt;
addr += amt;
filepos += amt;
saved_filepos = filepos;
ret += amt;
/* Move the unused data forwards. */
grub_memmove (buf, buf + amt, buf_read - amt);
buf_read -= amt;
}
else
/* If the size of the empty space becomes small, move the unused
data forwards. */
if (filepos - saved_filepos > FSYS_BUFLEN / 2)
{
/* Reset the reading offset. */
saved_filepos += buf_read;
buf_read = 0;
grub_memmove (buf, buf + FSYS_BUFLEN / 2, FSYS_BUFLEN / 2);
buf_read -= FSYS_BUFLEN / 2;
saved_filepos += FSYS_BUFLEN / 2;
}
/* Read the data. */