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Prevent streams from becoming libvirtd controlling TTY

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When opening a stream to a device which is a TTY, that device
may become the controlling TTY of libvirtd, if libvirtd was
daemonized. This in turn means when the other end of the stream
closes, libvirtd gets SIGHUP, causing it to reload its config.
Prevent this by forcing O_NOCTTY on all streams that are opened

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
This commit is contained in:
Daniel P. Berrange 2013-03-13 17:22:28 +00:00
parent 32bd699f55
commit b2878ed860
1 changed files with 2 additions and 0 deletions
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src/fdstream.c
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@ -582,6 +582,8 @@ virFDStreamOpenFileInternal(virStreamPtr st,
VIR_DEBUG("st=%p path=%s oflags=%x offset=%llu length=%llu mode=%o",
st, path, oflags, offset, length, mode);
oflags |= O_NOCTTY;
if (oflags & O_CREAT)
fd = open(path, oflags, mode);
else