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Fix a possible crash in g_io_channel_read_chars

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Patch by Rui Matos, https://bugzilla.gnome.org/show_bug.cgi?id=637759
This commit is contained in:
Matthias Clasen 2010-12-28 00:08:56 -05:00
parent bf1027f826
commit 702a96c281
1 changed files with 18 additions and 19 deletions
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37
glib/giochannel.c
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@ -1987,39 +1987,38 @@ g_io_channel_read_to_end (GIOChannel *channel,
* g_io_channel_read_chars:
* @channel: a #GIOChannel
* @buf: a buffer to read data into
* @count: the size of the buffer. Note that the buffer may
* not be complelely filled even if there is data
* in the buffer if the remaining data is not a
* complete character.
* @bytes_read: The number of bytes read. This may be zero even on
* success if count < 6 and the channel's encoding is non-%NULL.
* This indicates that the next UTF-8 character is too wide for
* the buffer.
* @count: the size of the buffer. Note that the buffer may not be
* complelely filled even if there is data in the buffer if the
* remaining data is not a complete character.
* @bytes_read: (allow-none): The number of bytes read. This may be
* zero even on success if count < 6 and the channel's encoding
* is non-%NULL. This indicates that the next UTF-8 character is
* too wide for the buffer.
* @error: a location to return an error of type #GConvertError
* or #GIOChannelError.
* or #GIOChannelError.
*
* Replacement for g_io_channel_read() with the new API.
*
* Return value: the status of the operation.
**/
*/
GIOStatus
g_io_channel_read_chars (GIOChannel *channel,
gchar *buf,
gsize count,
gsize *bytes_read,
gchar *buf,
gsize count,
gsize *bytes_read,
GError **error)
{
GIOStatus status;
gsize got_bytes;
g_return_val_if_fail (channel != NULL, G_IO_STATUS_ERROR);
g_return_val_if_fail ((error == NULL) || (*error == NULL),
G_IO_STATUS_ERROR);
g_return_val_if_fail ((error == NULL) || (*error == NULL), G_IO_STATUS_ERROR);
g_return_val_if_fail (channel->is_readable, G_IO_STATUS_ERROR);
if (count == 0)
{
*bytes_read = 0;
if (bytes_read)
*bytes_read = 0;
return G_IO_STATUS_NORMAL;
}
g_return_val_if_fail (buf != NULL, G_IO_STATUS_ERROR);
@ -2027,13 +2026,13 @@ g_io_channel_read_chars (GIOChannel *channel,
if (!channel->use_buffer)
{
gsize tmp_bytes;
g_assert (!channel->read_buf || channel->read_buf->len == 0);
status = channel->funcs->io_read (channel, buf, count, &tmp_bytes, error);
if (bytes_read)
*bytes_read = tmp_bytes;
*bytes_read = tmp_bytes;
return status;
}