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Fri, 12 Jul 2019 16:24:50 +0000 (UTC) Content-Type: text/plain; charset="utf-8" Mark a virCommand's inpipe (write-end of pipe) as non-blocking so that it will never block when we were to try to write too many bytes to it while it doesn't have the capacity to hold them. Signed-off-by: Stefan Berger Reviewed-by: Daniel P. Berrang=C3=A9 --- src/util/vircommand.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/src/util/vircommand.c b/src/util/vircommand.c index 49347a9800..bb9ecdf348 100644 --- a/src/util/vircommand.c +++ b/src/util/vircommand.c @@ -2533,6 +2533,13 @@ virCommandRunAsync(virCommandPtr cmd, pid_t *pid) } cmd->infd =3D infd[0]; cmd->inpipe =3D infd[1]; + if (fcntl(cmd->inpipe, F_SETFL, O_NONBLOCK) < 0) { + virReportSystemError(errno, "%s", + _("fcntl failed to set O_NONBLOCK")); + cmd->has_error =3D -1; + ret =3D -1; + goto cleanup; + } } else if ((cmd->inbuf && cmd->infd =3D=3D -1) || (cmd->outbuf && cmd->outfdptr !=3D &cmd->outfd) || (cmd->errbuf && cmd->errfdptr !=3D &cmd->errfd)) { --=20 2.20.1 -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list