static void
chan_shutdown_read(Channel *c)
{
if (compat20 && c->type == SSH_CHANNEL_LARVAL)
return;
debug("channel %d: close_read", c->self);
if (c->sock != -1) {
/*
* shutdown(sock, SHUT_READ) may return ENOTCONN if the
* write side has been closed already. (bug on Linux)
* HP-UX may return ENOTCONN also.
*/
if (shutdown(c->sock, SHUT_RD) < 0
&& errno != ENOTCONN)
error("channel %d: chan_shutdown_read: "
"shutdown() failed for fd%d [i%d o%d]: %.100s",
c->self, c->sock, c->istate, c->ostate,
strerror(errno));
} else {
if (channel_close_fd(&c->rfd) < 0)
log("channel %d: chan_shutdown_read: "
"close() failed for fd%d: %.100s",
c->self, c->rfd, strerror(errno));
}
}
static void
chan_shutdown_read(struct ssh *ssh, Channel *c)
{
if (c->type == SSH_CHANNEL_LARVAL)
return;
debug2("channel %d: %s (i%d o%d sock %d wfd %d efd %d [%s])",
c->self, __func__, c->istate, c->ostate, c->sock, c->rfd, c->efd,
channel_format_extended_usage(c));
if (c->sock != -1) {
/*
* shutdown(sock, SHUT_READ) may return ENOTCONN if the
* write side has been closed already. (bug on Linux)
* HP-UX may return ENOTCONN also.
*/
if (shutdown(c->sock, SHUT_RD) < 0 && errno != ENOTCONN) {
error("channel %d: %s: shutdown() failed for "
"fd %d [i%d o%d]: %.100s",
c->self, __func__, c->sock, c->istate, c->ostate,
strerror(errno));
}
} else {
if (channel_close_fd(ssh, &c->rfd) < 0) {
logit("channel %d: %s: close() failed for "
"fd %d [i%d o%d]: %.100s",
c->self, __func__, c->rfd, c->istate, c->ostate,
strerror(errno));
}
}
}
/* helper */
static void
chan_shutdown_write(struct ssh *ssh, Channel *c)
{
sshbuf_reset(c->output);
if (c->type == SSH_CHANNEL_LARVAL)
return;
/* shutdown failure is allowed if write failed already */
debug2("channel %d: %s (i%d o%d sock %d wfd %d efd %d [%s])",
c->self, __func__, c->istate, c->ostate, c->sock, c->wfd, c->efd,
channel_format_extended_usage(c));
if (c->sock != -1) {
if (shutdown(c->sock, SHUT_WR) < 0) {
debug2("channel %d: %s: shutdown() failed for "
"fd %d [i%d o%d]: %.100s", c->self, __func__,
c->sock, c->istate, c->ostate,
strerror(errno));
}
} else {
if (channel_close_fd(ssh, &c->wfd) < 0) {
logit("channel %d: %s: close() failed for "
"fd %d [i%d o%d]: %.100s",
c->self, __func__, c->wfd, c->istate, c->ostate,
strerror(errno));
}
}
}
static void
chan_shutdown_extended_read(struct ssh *ssh, Channel *c)
{
if (c->type == SSH_CHANNEL_LARVAL || c->efd == -1)
return;
if (c->extended_usage != CHAN_EXTENDED_READ &&
c->extended_usage != CHAN_EXTENDED_IGNORE)
return;
debug2("channel %d: %s (i%d o%d sock %d wfd %d efd %d [%s])",
c->self, __func__, c->istate, c->ostate, c->sock, c->rfd, c->efd,
channel_format_extended_usage(c));
if (channel_close_fd(ssh, &c->efd) < 0) {
logit("channel %d: %s: close() failed for "
"extended fd %d [i%d o%d]: %.100s",
c->self, __func__, c->efd, c->istate, c->ostate,
strerror(errno));
}
}
static void
chan_shutdown_read(Channel *c)
{
if (compat20 && c->type == SSH_CHANNEL_LARVAL)
return;
debug2("channel %d: close_read", c->self);
if (c->sock != -1) {
if (shutdown(c->sock, SHUT_RD) < 0)
error("channel %d: chan_shutdown_read: "
"shutdown() failed for fd %d [i%d o%d]: %.100s",
c->self, c->sock, c->istate, c->ostate,
strerror(errno));
} else {
if (channel_close_fd(&c->rfd) < 0)
logit("channel %d: chan_shutdown_read: "
"close() failed for fd %d: %.100s",
c->self, c->rfd, strerror(errno));
}
}
/* helper */
static void
chan_shutdown_write(Channel *c)
{
buffer_clear(&c->output);
if (compat20 && c->type == SSH_CHANNEL_LARVAL)
return;
/* shutdown failure is allowed if write failed already */
debug2("channel %d: close_write", c->self);
if (c->sock != -1) {
if (shutdown(c->sock, SHUT_WR) < 0)
debug2("channel %d: chan_shutdown_write: "
"shutdown() failed for fd %d: %.100s",
c->self, c->sock, strerror(errno));
} else {
if (channel_close_fd(&c->wfd) < 0)
logit("channel %d: chan_shutdown_write: "
"close() failed for fd %d: %.100s",
c->self, c->wfd, strerror(errno));
}
}