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  • Committer: Teddy Hogeborn
  • Date: 2024-11-17 16:53:00 UTC
  • mto: This revision was merged to the branch mainline in revision 412.
  • Revision ID: teddy@recompile.se-20241117165300-02hxm96s8cj9528e
mandos: Avoid closing configured server network socket

If we are passed a pre-created created network socket as a file
descriptor, we must avoid later closing it (when stdin, stdout and
stderr are dup2()ed over with /dev/null) by making sure that the
network file descriptor is not 0, 1, or 2, by creating a new file
descriptor if necessary.

However, when we create a new file descriptor we must check that the
new file descriptor is not 0, 1, or 2 either, and try again until we
get a suitable file descriptor.

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## Required
 
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#BRIDGE=br0
 
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#PORT_ADDRESSES="00:11:22:33:44:55 11:22:33:44:55:66"
 
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## Optional
 
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#IPADDRS="192.0.2.3/24 2001:DB8::aede:48ff:fe71:f6f2/32"
 
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#ROUTES="192.0.2.0/24 2001:DB8::/32"