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pasta: Allow specifying paths and names of namespaces
Based on a patch from Giuseppe Scrivano, this adds the ability to: - specify paths and names of target namespaces to join, instead of a PID, also for user namespaces, with --userns - request to join or create a network namespace only, without entering or creating a user namespace, with --netns-only - specify the base directory for netns mountpoints, with --nsrun-dir Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com> [sbrivio: reworked logic to actually join the given namespaces when they're not created, implemented --netns-only and --nsrun-dir, updated pasta demo script and man page] Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
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parent
ab32838022
commit
9a175cc2ce
12 changed files with 240 additions and 79 deletions
4
udp.c
4
udp.c
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@ -516,7 +516,7 @@ static int udp_splice_connect_ns(void *arg)
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a = (struct udp_splice_connect_ns_arg *)arg;
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ns_enter(a->c->pasta_pid);
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ns_enter(a->c);
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a->s = udp_splice_connect(a->c, a->v6, a->bound_sock, a->src, a->dst,
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UDP_BACK_TO_INIT);
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@ -1004,7 +1004,7 @@ int udp_sock_init_ns(void *arg)
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struct ctx *c = (struct ctx *)arg;
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in_port_t dst;
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ns_enter(c->pasta_pid);
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ns_enter(c);
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for (dst = 0; dst < USHRT_MAX; dst++) {
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if (!bitmap_isset(c->udp.port_to_init, dst))
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