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authorGleb Smirnoff <glebius@FreeBSD.org>2025-01-13 18:08:58 +0000
committerGleb Smirnoff <glebius@FreeBSD.org>2025-01-13 18:11:46 +0000
commit59498e099cc055da7afca8266087b7668be6d7cb (patch)
treee914327903d0d74005605112567ca5078467a195
parent4155be454c46bc1ab725aca5c6969b064b74be38 (diff)
sockets: virtualize kern.ipc.numopensockets
To avoid breaking POLA on the host machine it reports the same value as before. In a VNET jail it now reports number of sockets in this jail. PR: 219655 Differential Revision: https://reviews.freebsd.org/D48315
-rw-r--r--sys/kern/uipc_socket.c20
1 files changed, 17 insertions, 3 deletions
diff --git a/sys/kern/uipc_socket.c b/sys/kern/uipc_socket.c
index 7a76b561389a..426316ac6ce8 100644
--- a/sys/kern/uipc_socket.c
+++ b/sys/kern/uipc_socket.c
@@ -275,9 +275,23 @@ SYSCTL_PROC(_kern_ipc, KIPC_SOMAXCONN, somaxconn,
sizeof(u_int), sysctl_somaxconn, "IU",
"Maximum listen socket pending connection accept queue size (compat)");
-static int numopensockets;
-SYSCTL_INT(_kern_ipc, OID_AUTO, numopensockets, CTLFLAG_RD,
- &numopensockets, 0, "Number of open sockets");
+static u_int numopensockets;
+static int
+sysctl_numopensockets(SYSCTL_HANDLER_ARGS)
+{
+ u_int val;
+
+#ifdef VIMAGE
+ if(!IS_DEFAULT_VNET(curvnet))
+ val = curvnet->vnet_sockcnt;
+ else
+#endif
+ val = numopensockets;
+ return (sysctl_handle_int(oidp, &val, 0, req));
+}
+SYSCTL_PROC(_kern_ipc, OID_AUTO, numopensockets,
+ CTLTYPE_UINT | CTLFLAG_RD | CTLFLAG_MPSAFE | CTLFLAG_VNET, 0, sizeof(u_int),
+ sysctl_numopensockets, "IU", "Number of open sockets");
/*
* so_global_mtx protects so_gencnt, numopensockets, and the per-socket