/**
* Write data to stream.
*
* @param os the output stream
* @param data start of data to write
* @param len length of data to write
*
* @return size of data written, -1 on error.
*/
ssize_t
ostream_write(ostream_t *os, const void *data, size_t len)
{
ssize_t w = (ssize_t) -1;
ostream_check(os);
len = MIN(len, MAX_INT_VAL(ssize_t));
switch (os->type) {
case OSTREAM_T_FILE:
{
size_t n = fwrite(data, len, 1, os->u.f);
w = (0 == n) ? -1 : (ssize_t) len;
}
break;
case OSTREAM_T_FD:
w = write(os->u.fd, data, len);
break;
case OSTREAM_T_MEM:
pmsg_slist_append(os->u.sl, data, len);
w = len;
break;
case OSTREAM_T_PMSG:
w = pmsg_write(os->u.mb, data, len);
w = (len == UNSIGNED(w)) ? w : -1;
break;
case OSTREAM_T_MAX:
g_assert_not_reached();
}
if (-1 == w)
os->ioerr = TRUE;
return w;
}
/**
* Append data to the dump buffer.
*/
static void
dump_append(struct dump *dump, const void *data, size_t size)
{
g_return_if_fail(dump->slist);
pmsg_slist_append(dump->slist, data, size);
dump->fill += size;
}