On Thu, Feb 18, 2010 at 10:56:47AM -0500, Cole Robinson wrote:

Signed-off-by: Cole Robinson <crobinso@redhat.com> --- src/remote/remote_driver.c | 38 +++++++++++++++++++++++++++++++++++--- 1 files changed, 35 insertions(+), 3 deletions(-)

diff --git a/src/remote/remote_driver.c b/src/remote/remote_driver.c index 13534ce..8914c39 100644 --- a/src/remote/remote_driver.c +++ b/src/remote/remote_driver.c @@ -154,6 +154,7 @@ struct private_data { virMutex lock;

int sock; /* Socket. */ + int errfd; /* File handle connected to remote stderr */ int watch; /* File handle watch */ pid_t pid; /* PID of tunnel process */ int uses_tls; /* TLS enabled on socket? */ @@ -783,6 +784,7 @@ doRemoteOpen (virConnectPtr conn, case trans_ext: { pid_t pid; int sv[2]; + int errfd[2];

/* Fork off the external process. Use socketpair to create a private * (unnamed) Unix domain socket to the child process so we don't have @@ -794,14 +796,22 @@ doRemoteOpen (virConnectPtr conn, goto failed; }

+ if (pipe(errfd) == -1) { + virReportSystemError(errno, "%s", + _("unable to create socket pair")); + goto failed; + } + if (virExec((const char**)cmd_argv, NULL, NULL, - &pid, sv[1], &(sv[1]), NULL, + &pid, sv[1], &(sv[1]), &(errfd[1]), VIR_EXEC_CLEAR_CAPS) < 0) goto failed;

/* Parent continues here. */ close (sv[1]); + close (errfd[1]); priv->sock = sv[0]; + priv->errfd = errfd[0]; priv->pid = pid;

/* Do not set 'is_secure' flag since we can't guarentee @@ -827,6 +837,12 @@ doRemoteOpen (virConnectPtr conn, goto failed; }

+ if ((priv->errfd != -1) && virSetNonBlock(priv->errfd) < 0) { + virReportSystemError(errno, "%s", + _("unable to make socket non-blocking")); + goto failed; + } + if (pipe(wakeupFD) < 0) { virReportSystemError(errno, "%s", _("unable to make pipe")); @@ -939,6 +955,9 @@ doRemoteOpen (virConnectPtr conn,

failed: /* Close the socket if we failed. */ + if (priv->errfd >= 0) + close(priv->errfd); + if (priv->sock >= 0) { if (priv->uses_tls && priv->session) { gnutls_bye (priv->session, GNUTLS_SHUT_RDWR); @@ -986,6 +1005,7 @@ remoteAllocPrivateData(virConnectPtr conn) priv->localUses = 1; priv->watch = -1; priv->sock = -1; + priv->errfd = -1;

return priv; } @@ -1408,6 +1428,7 @@ doRemoteClose (virConnectPtr conn, struct private_data *priv) sasl_dispose (&priv->saslconn); #endif close (priv->sock); + close (priv->errfd);

#ifndef WIN32 if (priv->pid > 0) { @@ -7785,12 +7806,23 @@ remoteIOReadBuffer(virConnectPtr conn, if (errno == EWOULDBLOCK) return 0;

+ char errout[1024] = "\0"; + if (priv->errfd != -1) { + saferead(priv->errfd, errout, sizeof(errout)); + } + virReportSystemError(errno, - "%s", _("cannot recv data")); + _("cannot recv data: %s"), errout); + } else { + char errout[1024] = "\0"; + if (priv->errfd != -1) { + saferead(priv->errfd, errout, sizeof(errout)); + } + errorf (in_open ? NULL : conn, VIR_ERR_SYSTEM_ERROR, - "%s", _("server closed connection")); + _("server closed connection: %s"), errout); } return -1; }

It would be nice if we could have a function to read and allocate from an fd instead of a static stack allocation, but it's not urgent, ACK, Daniel -- Daniel Veillard | libxml Gnome XML XSLT toolkit http://xmlsoft.org/ daniel@veillard.com | Rpmfind RPM search engine http://rpmfind.net/ http://veillard.com/ | virtualization library http://libvirt.org/