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authorPaul Holzinger <pholzing@redhat.com>2023-02-07 16:10:46 +0100
committerStefano Brivio <sbrivio@redhat.com>2023-02-12 23:42:34 +0100
commit3487b5fc938f2f28653bec5ab8c412f5c135d300 (patch)
tree0b5ea9929ab8874473583e6300d88b0698838a8c /tcp.c
parent7a8ed9459dfe803c529d61d3741d8d4f8f67ea92 (diff)
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pasta: do not leak netlink sock into child
When spawning a child command with pasta command... pasta should not leak fds that it opened. Only the fds that were already open should be given to the child. Run `pasta --config-net -- ls -l /proc/self/fd` from a terminal where only stdin/out/err are open. The fd 3 was opend by ls to read the /proc/self/fd dir. But fd 5 is the netlink socket that was opend in pasta. To prevent such a leak we will open the socket with SOCK_CLOEXEC. Signed-off-by: Paul Holzinger <pholzing@redhat.com> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
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