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ui: fix return type for VNC I/O functions to be ssize_t

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Various VNC server I/O functions return 'long' and then
also pass this to a method accepting 'int'. All these
should be ssize_t to match the signature of read/write
APIs and thus avoid potential for integer truncation /
wraparound.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Daniel P. Berrange 2015-08-06 15:35:55 +01:00
parent d321e1e526
commit fdd1ab6ad5
2 changed files with 21 additions and 21 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

36
ui/vnc.c
View file

@ -1268,7 +1268,7 @@ void vnc_disconnect_finish(VncState *vs)
g_free(vs);
}
int vnc_client_io_error(VncState *vs, int ret, int last_errno)
ssize_t vnc_client_io_error(VncState *vs, ssize_t ret, int last_errno)
{
if (ret == 0 || ret == -1) {
if (ret == -1) {
@ -1284,7 +1284,7 @@ int vnc_client_io_error(VncState *vs, int ret, int last_errno)
}
}
VNC_DEBUG("Closing down client sock: ret %d, errno %d\n",
VNC_DEBUG("Closing down client sock: ret %zd, errno %d\n",
ret, ret < 0 ? last_errno : 0);
vnc_disconnect_start(vs);
@ -1301,11 +1301,11 @@ void vnc_client_error(VncState *vs)
}
#ifdef CONFIG_VNC_TLS
static long vnc_client_write_tls(gnutls_session_t *session,
const uint8_t *data,
size_t datalen)
static ssize_t vnc_client_write_tls(gnutls_session_t *session,
const uint8_t *data,
size_t datalen)
{
long ret = gnutls_write(*session, data, datalen);
ssize_t ret = gnutls_write(*session, data, datalen);
if (ret < 0) {
if (ret == GNUTLS_E_AGAIN) {
errno = EAGAIN;
@ -1333,9 +1333,9 @@ static long vnc_client_write_tls(gnutls_session_t *session,
* the requested 'datalen' if the socket would block. Returns
* -1 on error, and disconnects the client socket.
*/
long vnc_client_write_buf(VncState *vs, const uint8_t *data, size_t datalen)
ssize_t vnc_client_write_buf(VncState *vs, const uint8_t *data, size_t datalen)
{
long ret;
ssize_t ret;
#ifdef CONFIG_VNC_TLS
if (vs->tls.session) {
ret = vnc_client_write_tls(&vs->tls.session, data, datalen);
@ -1360,9 +1360,9 @@ long vnc_client_write_buf(VncState *vs, const uint8_t *data, size_t datalen)
* the buffered output data if the socket would block. Returns
* -1 on error, and disconnects the client socket.
*/
static long vnc_client_write_plain(VncState *vs)
static ssize_t vnc_client_write_plain(VncState *vs)
{
long ret;
ssize_t ret;
#ifdef CONFIG_VNC_SASL
VNC_DEBUG("Write Plain: Pending output %p size %zd offset %zd. Wait SSF %d\n",
@ -1436,10 +1436,10 @@ void vnc_read_when(VncState *vs, VncReadEvent *func, size_t expecting)
}
#ifdef CONFIG_VNC_TLS
static long vnc_client_read_tls(gnutls_session_t *session, uint8_t *data,
size_t datalen)
static ssize_t vnc_client_read_tls(gnutls_session_t *session, uint8_t *data,
size_t datalen)
{
long ret = gnutls_read(*session, data, datalen);
ssize_t ret = gnutls_read(*session, data, datalen);
if (ret < 0) {
if (ret == GNUTLS_E_AGAIN) {
errno = EAGAIN;
@ -1467,9 +1467,9 @@ static long vnc_client_read_tls(gnutls_session_t *session, uint8_t *data,
* the requested 'datalen' if the socket would block. Returns
* -1 on error, and disconnects the client socket.
*/
long vnc_client_read_buf(VncState *vs, uint8_t *data, size_t datalen)
ssize_t vnc_client_read_buf(VncState *vs, uint8_t *data, size_t datalen)
{
long ret;
ssize_t ret;
#ifdef CONFIG_VNC_TLS
if (vs->tls.session) {
ret = vnc_client_read_tls(&vs->tls.session, data, datalen);
@ -1492,9 +1492,9 @@ long vnc_client_read_buf(VncState *vs, uint8_t *data, size_t datalen)
* Returns the number of bytes read. Returns -1 on error, and
* disconnects the client socket.
*/
static long vnc_client_read_plain(VncState *vs)
static ssize_t vnc_client_read_plain(VncState *vs)
{
int ret;
ssize_t ret;
VNC_DEBUG("Read plain %p size %zd offset %zd\n",
vs->input.buffer, vs->input.capacity, vs->input.offset);
buffer_reserve(&vs->input, 4096);
@ -1520,7 +1520,7 @@ static void vnc_jobs_bh(void *opaque)
void vnc_client_read(void *opaque)
{
VncState *vs = opaque;
long ret;
ssize_t ret;
#ifdef CONFIG_VNC_SASL
if (vs->sasl.conn && vs->sasl.runSSF)

6
ui/vnc.h
View file

@ -513,8 +513,8 @@ enum {
void vnc_client_read(void *opaque);
void vnc_client_write(void *opaque);
long vnc_client_read_buf(VncState *vs, uint8_t *data, size_t datalen);
long vnc_client_write_buf(VncState *vs, const uint8_t *data, size_t datalen);
ssize_t vnc_client_read_buf(VncState *vs, uint8_t *data, size_t datalen);
ssize_t vnc_client_write_buf(VncState *vs, const uint8_t *data, size_t datalen);
/* Protocol I/O functions */
void vnc_write(VncState *vs, const void *data, size_t len);
@ -533,7 +533,7 @@ uint32_t read_u32(uint8_t *data, size_t offset);
/* Protocol stage functions */
void vnc_client_error(VncState *vs);
int vnc_client_io_error(VncState *vs, int ret, int last_errno);
ssize_t vnc_client_io_error(VncState *vs, ssize_t ret, int last_errno);
void start_client_init(VncState *vs);
void start_auth_vnc(VncState *vs);