zephyrproject-rtos · jhedberg · Oct 21, 2025 · Oct 14, 2025 · Oct 17, 2025 · Oct 17, 2025
diff --git a/doc/releases/migration-guide-4.3.rst b/doc/releases/migration-guide-4.3.rst
@@ -51,6 +51,15 @@ Base Libraries
   may include :zephyr_file:`include/zephyr/posix/posix_limits.h` for Zephyr's definitions. Some
   runtime-invariant values may need to be queried via :c:func:`sysconf`.
 
+* The number of file descriptor table size and its availability is now determined by
+  a ``ZVFS_OPEN_SIZE`` define instead of the :kconfig:option:`CONFIG_ZVFS_OPEN_MAX`
+  Kconfig option. Subsystems can specify their own custom file descriptor table size
+  requirements by specifying Kconfig options with the prefix ``CONFIG_ZVFS_OPEN_ADD_SIZE_``.
+  The old Kconfig option still exists, but will be overridden if the custom requirements
+  are larger. To force the old Kconfig option to be used, even when its value is less
+  than the indicated custom requirements, a new :kconfig:option:`CONFIG_ZVFS_OPEN_IGNORE_MIN`
+  option has been introduced (which defaults being disabled).
+
 Boards
 ******
 

diff --git a/include/zephyr/sys/fdtable.h b/include/zephyr/sys/fdtable.h
@@ -245,7 +245,7 @@ struct zvfs_pollfd {
 __syscall int zvfs_poll(struct zvfs_pollfd *fds, int nfds, int poll_timeout);
 
 struct zvfs_fd_set {
-	uint32_t bitset[(CONFIG_ZVFS_OPEN_MAX + 31) / 32];
+	uint32_t bitset[DIV_ROUND_UP(ZVFS_OPEN_SIZE, 32)];
 };
 
 /** @brief Number of file descriptors which can be added @ref zvfs_fd_set */

diff --git a/lib/os/CMakeLists.txt b/lib/os/CMakeLists.txt
@@ -13,6 +13,36 @@ zephyr_sources(
   thread_entry.c
   )
 
+if(CONFIG_ZVFS_OPEN_IGNORE_MIN)
+  set(final_fd_size ${CONFIG_ZVFS_OPEN_MAX})
+else()
+  # Import all custom ZVFS_OPEN_ size requirements
+  import_kconfig(CONFIG_ZVFS_OPEN_ADD_SIZE_ ${DOTCONFIG} add_size_keys)
+
+  # Calculate the sum of all "ADD_SIZE" requirements
+  set(add_size_sum 0)
+  foreach(add_size ${add_size_keys})
+    math(EXPR add_size_sum "${add_size_sum} + ${${add_size}}")
+  endforeach()
+
+  if(CONFIG_ZVFS_OPEN_MAX LESS "${add_size_sum}")
+    # Only warn if default value 0 has been modified
+    if(NOT CONFIG_ZVFS_OPEN_MAX EQUAL 0)
+      message(WARNING "
+        CONFIG_ZVFS_OPEN_MAX is less than requested minimum:
+          ${CONFIG_ZVFS_OPEN_MAX} < ${add_size_sum}
+        Setting the file descriptor size to ${add_size_sum}")
+    endif()
+
+    set(final_fd_size ${add_size_sum})
+  else()
+    # CONFIG_ZVFS_OPEN_MAX was greater than the sum of the requirements
+    set(final_fd_size ${CONFIG_ZVFS_OPEN_MAX})
+  endif()
+endif()
+
+zephyr_compile_definitions(ZVFS_OPEN_SIZE=${final_fd_size})
+
 zephyr_sources_ifdef(CONFIG_FDTABLE fdtable.c)
 zephyr_syscall_header_ifdef(CONFIG_FDTABLE
   ${ZEPHYR_BASE}/include/zephyr/sys/fdtable.h

diff --git a/lib/os/Kconfig b/lib/os/Kconfig
@@ -12,13 +12,27 @@ config FDTABLE
 
 config ZVFS_OPEN_MAX
 	int "Maximum number of open file descriptors"
-	default 24 if NRF70_ENABLE_DUAL_VIF
-	default 16 if WIFI_NM_WPA_SUPPLICANT
-	default 16 if POSIX_API
-	default 4
+	default 0
 	help
 	  Maximum number of open file descriptors, this includes
-	  files, sockets, special devices, etc.
+	  files, sockets, special devices, etc. If subsystems
+	  specify ZVFS_OPEN_ADD_SIZE_* options, these will be added together
+	  and the sum will be compared to the ZVFS_OPEN_MAX value.
+	  If the sum is greater than the ZVFS_OPEN_MAX option (even if this
+	  has the default 0 value), then the actual file descriptor count will be
+	  rounded up to the sum of the individual requirements (unless the
+	  ZVFS_OPEN_IGNORE_MIN option is enabled). If the final value, after
+	  considering both this option as well as sum of the custom
+	  requirements, ends up being zero, then no file descriptors will be
+	  available.
+
+config ZVFS_OPEN_IGNORE_MIN
+	bool "Ignore the minimum fd count requirement"
+	help
+	  This option can be set to force setting a smaller file descriptor
+	  count than what's specified by enabled subsystems. This can be useful
+	  when optimizing memory usage and a more precise minimum fd count
+	  is known for a given application.
 
 config PRINTK_SYNC
 	bool "Serialize printk() calls"

diff --git a/lib/os/fdtable.c b/lib/os/fdtable.c
@@ -39,10 +39,10 @@ struct fd_entry {
 #if defined(CONFIG_POSIX_DEVICE_IO)
 static const struct fd_op_vtable stdinout_fd_op_vtable;
 
-BUILD_ASSERT(CONFIG_ZVFS_OPEN_MAX >= 3, "CONFIG_ZVFS_OPEN_MAX >= 3 for CONFIG_POSIX_DEVICE_IO");
+BUILD_ASSERT(ZVFS_OPEN_SIZE >= 3, "ZVFS_OPEN_SIZE >= 3 for CONFIG_POSIX_DEVICE_IO");
 #endif /* defined(CONFIG_POSIX_DEVICE_IO) */
 
-static struct fd_entry fdtable[CONFIG_ZVFS_OPEN_MAX] = {
+static struct fd_entry fdtable[ZVFS_OPEN_SIZE] = {
 #if defined(CONFIG_POSIX_DEVICE_IO)
 	/*
 	 * Predefine entries for stdin/stdout/stderr.

diff --git a/lib/posix/options/Kconfig.device_io b/lib/posix/options/Kconfig.device_io
@@ -45,12 +45,17 @@ config POSIX_DEVICE_IO_ALIAS_WRITE
 
 endif # POSIX_DEVICE_IO
 
+# Allocate fd for stdin, stdout and stderr
+config ZVFS_OPEN_ADD_SIZE_POSIX
+	int "Amount of file descriptors used by Posix"
+	default 3
+
 config POSIX_OPEN_MAX
 	int
-	default ZVFS_OPEN_MAX
+	default ZVFS_OPEN_ADD_SIZE_POSIX
 	help
 	  The maximum number of files that a process can have open at one time. This option is not
-	  directly user-configurable but can be adjusted via CONFIG_ZVFS_OPEN_MAX.
+	  directly user-configurable but can be adjusted via CONFIG_ZVFS_OPEN_ADD_SIZE_POSIX.
 
 	  For more information, please see
 	  https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/limits.h.html

diff --git a/modules/hostap/Kconfig b/modules/hostap/Kconfig
@@ -24,6 +24,10 @@ config WIFI_NM_WPA_SUPPLICANT
 
 if WIFI_NM_WPA_SUPPLICANT
 
+config ZVFS_OPEN_ADD_SIZE_WIFI_NM_WPA_SUPPLICANT
+	int "Number of socket descriptors needed by hostap"
+	default 12
+
 config WIFI_NM_WPA_SUPPLICANT_GLOBAL_HEAP
 	bool "Use Zephyr kernel heap for Wi-Fi driver"
 	default y

diff --git a/modules/nrf_wifi/Kconfig b/modules/nrf_wifi/Kconfig
@@ -4,4 +4,8 @@
 config ZEPHYR_NRF_WIFI_MODULE
 	bool
 
+config ZVFS_OPEN_ADD_SIZE_NRF70_ENABLE_DUAL_VIF
+	int "Number of socket descriptors needed by nrf wifi driver"
+	default 8
+
 source "modules/nrf_wifi/bus/Kconfig"
diff --git a/samples/drivers/video/tcpserversink/prj.conf b/samples/drivers/video/tcpserversink/prj.conf
@@ -3,7 +3,6 @@ CONFIG_NETWORKING=y
 CONFIG_NET_TCP=y
 CONFIG_NET_IPV4=y
 CONFIG_NET_SOCKETS=y
-CONFIG_ZVFS_OPEN_MAX=6
 CONFIG_POSIX_API=y
 
 # Kernel options

diff --git a/samples/modules/thrift/hello/client/prj.conf b/samples/modules/thrift/hello/client/prj.conf
@@ -28,7 +28,6 @@ CONFIG_NET_TCP=y
 CONFIG_NET_IPV6=n
 CONFIG_NET_IPV4=y
 CONFIG_NET_SOCKETS=y
-CONFIG_ZVFS_OPEN_MAX=6
 CONFIG_NET_CONNECTION_MANAGER=y
 
 # Kernel options
@@ -59,10 +58,6 @@ CONFIG_NET_CONFIG_NEED_IPV4=y
 CONFIG_NET_CONFIG_MY_IPV4_ADDR="192.0.2.1"
 CONFIG_NET_CONFIG_PEER_IPV4_ADDR="192.0.2.2"
 
-# Number of socket descriptors might need adjusting
-# if there are more than 1 handlers defined.
-CONFIG_ZVFS_OPEN_MAX=16
-
 # Some platforms require relatively large stack sizes.
 # This can be tuned per-board.
 CONFIG_MAIN_STACK_SIZE=8192

diff --git a/samples/modules/thrift/hello/server/prj.conf b/samples/modules/thrift/hello/server/prj.conf
@@ -50,10 +50,6 @@ CONFIG_NET_CONFIG_NEED_IPV4=y
 CONFIG_NET_CONFIG_MY_IPV4_ADDR="192.0.2.1"
 CONFIG_NET_CONFIG_PEER_IPV4_ADDR="192.0.2.2"
 
-# Number of socket descriptors might need adjusting
-# if there are more than 1 handlers defined.
-CONFIG_ZVFS_OPEN_MAX=16
-
 # Some platforms require relatively large stack sizes.
 # This can be tuned per-board.
 CONFIG_MAIN_STACK_SIZE=8192

diff --git a/samples/net/common/Kconfig b/samples/net/common/Kconfig
@@ -50,3 +50,8 @@ config NET_SAMPLE_COMMON_TUNNEL_MY_ADDR
 	depends on NET_L2_IPIP
 	help
 	  The value depends on your network setup.
+
+# Generic way to allocate enough sockets for the application
+config ZVFS_OPEN_ADD_SIZE_NET_SAMPLE
+	int "Amount of sockets needed by the networking sample"
+	default 0
diff --git a/samples/net/dns_resolve/prj.conf b/samples/net/dns_resolve/prj.conf
@@ -15,7 +15,6 @@ CONFIG_NET_IPV4=y
 CONFIG_NET_DHCPV4=n
 
 CONFIG_ZVFS_POLL_MAX=5
-CONFIG_ZVFS_OPEN_MAX=5
 
 # Enable the DNS resolver
 CONFIG_DNS_RESOLVER=y

diff --git a/samples/net/dsa/prj.conf b/samples/net/dsa/prj.conf
@@ -18,7 +18,6 @@ CONFIG_NET_IF_UNICAST_IPV6_ADDR_COUNT=5
 CONFIG_NET_IF_MCAST_IPV6_ADDR_COUNT=5
 CONFIG_NET_IF_UNICAST_IPV4_ADDR_COUNT=1
 CONFIG_NET_MAX_CONTEXTS=4
-CONFIG_ZVFS_OPEN_MAX=4
 CONFIG_ZVFS_POLL_MAX=4
 CONFIG_NET_MAX_CONN=4
 

diff --git a/samples/net/lwm2m_client/Kconfig b/samples/net/lwm2m_client/Kconfig
@@ -52,4 +52,5 @@ config NET_SAMPLE_LWM2M_WAIT_DNS
 	  Make sure we get DNS server addresses from the network
 	  before considering the connection to be up.
 
+source "samples/net/common/Kconfig"
 source "Kconfig.zephyr"
diff --git a/samples/net/lwm2m_client/boards/native_sim.conf b/samples/net/lwm2m_client/boards/native_sim.conf
@@ -4,4 +4,4 @@ CONFIG_DNS_SERVER1="192.0.2.2"
 CONFIG_LWM2M_DNS_SUPPORT=y
 CONFIG_NET_CONFIG_MY_IPV4_GW="192.0.2.2"
 CONFIG_HEAP_MEM_POOL_SIZE=32768
-CONFIG_ZVFS_OPEN_MAX=16
+CONFIG_ZVFS_OPEN_ADD_SIZE_NET_SAMPLE=16
diff --git a/samples/net/mqtt_sn_publisher/prj.conf b/samples/net/mqtt_sn_publisher/prj.conf
@@ -4,7 +4,6 @@ CONFIG_NET_UDP=y
 CONFIG_NET_IPV4=y
 CONFIG_NET_IPV6=y
 CONFIG_NET_SOCKETS=y
-CONFIG_ZVFS_OPEN_MAX=6
 CONFIG_NET_CONNECTION_MANAGER=y
 
 # Kernel options

diff --git a/samples/net/openthread/border_router/prj.conf b/samples/net/openthread/border_router/prj.conf
@@ -16,7 +16,6 @@ CONFIG_NET_ROUTE_MCAST=y
 CONFIG_NET_SOCKETS_SERVICE=y
 CONFIG_NET_CONTEXT_RECV_PKTINFO=y
 CONFIG_NET_CONTEXT_RECV_HOPLIMIT=y
-CONFIG_ZVFS_POLL_MAX=15
 CONFIG_NET_SOCKETS_SERVICE_STACK_SIZE=12288
 CONFIG_NET_MAX_CONN=12
 CONFIG_NET_CONNECTION_MANAGER_MONITOR_STACK_SIZE=2048
@@ -72,10 +71,6 @@ CONFIG_NET_IF_MCAST_IPV6_ADDR_COUNT=6
 CONFIG_NET_IF_MAX_IPV4_COUNT=2
 CONFIG_NET_IF_MAX_IPV6_COUNT=6
 
-# Number of socket descriptors might need adjusting
-# if there are more than 1 handlers defined.
-CONFIG_ZVFS_OPEN_MAX=15
-
 # DNS resolver required by DNS upstream resolver
 CONFIG_DNS_RESOLVER=y
 CONFIG_DNS_RESOLVER_PACKET_FORWARDING=y

diff --git a/samples/net/prometheus/prj.conf b/samples/net/prometheus/prj.conf
@@ -5,13 +5,11 @@ CONFIG_LOG=y
 CONFIG_ENTROPY_GENERATOR=y
 CONFIG_TEST_RANDOM_GENERATOR=y
 CONFIG_INIT_STACKS=y
-CONFIG_ZVFS_OPEN_MAX=32
 CONFIG_POSIX_API=y
 CONFIG_FDTABLE=y
 CONFIG_NET_SOCKETS_POLL_MAX=32
 CONFIG_REQUIRES_FULL_LIBC=y
 CONFIG_HEAP_MEM_POOL_SIZE=2048
-CONFIG_ZVFS_OPEN_MAX=32
 
 # Prometheus
 CONFIG_PROMETHEUS=y

diff --git a/samples/net/sockets/dumb_http_server_mt/prj.conf b/samples/net/sockets/dumb_http_server_mt/prj.conf
@@ -2,7 +2,6 @@
 CONFIG_TEST_RANDOM_GENERATOR=y
 
 # POSIX options
-CONFIG_ZVFS_OPEN_MAX=20
 CONFIG_POSIX_API=y
 
 # Networking config

diff --git a/samples/net/sockets/echo_client/Kconfig b/samples/net/sockets/echo_client/Kconfig
@@ -58,4 +58,5 @@ config NET_SAMPLE_SEND_ITERATIONS
 	  Send sample data this many times before exiting. A value of
 	  zero means that the sample application is run forever.
 
+source "samples/net/common/Kconfig"
 source "Kconfig.zephyr"
diff --git a/samples/net/sockets/echo_client/overlay-tls.conf b/samples/net/sockets/echo_client/overlay-tls.conf
@@ -13,4 +13,4 @@ CONFIG_NET_SOCKETS_SOCKOPT_TLS=y
 CONFIG_NET_SOCKETS_TLS_MAX_CONTEXTS=4
 CONFIG_NET_SOCKETS_ENABLE_DTLS=y
 CONFIG_NET_SOCKETS_DTLS_MAX_FRAGMENT_LENGTH=2048
-CONFIG_ZVFS_OPEN_MAX=12
+CONFIG_ZVFS_OPEN_ADD_SIZE_NET_SAMPLE=9
diff --git a/samples/net/sockets/echo_server/overlay-tls.conf b/samples/net/sockets/echo_server/overlay-tls.conf
@@ -14,4 +14,4 @@ CONFIG_NET_SOCKETS_TLS_MAX_CONTEXTS=6
 CONFIG_NET_SOCKETS_ENABLE_DTLS=y
 CONFIG_NET_SOCKETS_DTLS_TIMEOUT=30000
 CONFIG_NET_SOCKETS_DTLS_MAX_FRAGMENT_LENGTH=2048
-CONFIG_ZVFS_OPEN_MAX=20
+CONFIG_ZVFS_OPEN_ADD_SIZE_NET_SAMPLE=16
diff --git a/samples/net/sockets/echo_server/overlay-ws-console.conf b/samples/net/sockets/echo_server/overlay-ws-console.conf
@@ -9,4 +9,4 @@ CONFIG_NET_SOCKETS_POLL_MAX=32
 CONFIG_NET_MAX_CONN=32
 CONFIG_NET_SOCKETS_TLS_MAX_CONTEXTS=32
 CONFIG_ZVFS_EVENTFD_MAX=10
-CONFIG_ZVFS_OPEN_MAX=32
+CONFIG_ZVFS_OPEN_ADD_SIZE_NET_SAMPLE=24
diff --git a/samples/net/sockets/echo_server/prj.conf b/samples/net/sockets/echo_server/prj.conf
@@ -47,7 +47,7 @@ CONFIG_NET_CONFIG_PEER_IPV4_ADDR="192.0.2.2"
 
 # Number of socket descriptors might need adjusting
 # if there are more than 1 handlers defined.
-CONFIG_ZVFS_OPEN_MAX=12
+CONFIG_ZVFS_OPEN_ADD_SIZE_NET_SAMPLE=8
 
 # How many client can connect to echo-server simultaneously
 CONFIG_NET_SAMPLE_NUM_HANDLERS=1
diff --git a/samples/net/sockets/http_server/Kconfig b/samples/net/sockets/http_server/Kconfig
@@ -76,4 +76,5 @@ if USB_DEVICE_STACK_NEXT
 	source "samples/subsys/usb/common/Kconfig.sample_usbd"
 endif
 
+source "samples/net/common/Kconfig"
 source "Kconfig.zephyr"
diff --git a/samples/net/sockets/http_server/prj.conf b/samples/net/sockets/http_server/prj.conf
@@ -6,7 +6,7 @@ CONFIG_LOG=y
 CONFIG_ENTROPY_GENERATOR=y
 CONFIG_TEST_RANDOM_GENERATOR=y
 CONFIG_INIT_STACKS=y
-CONFIG_ZVFS_OPEN_MAX=32
+CONFIG_ZVFS_OPEN_ADD_SIZE_NET_SAMPLE=24
 CONFIG_POSIX_API=y
 CONFIG_FDTABLE=y
 CONFIG_ZVFS_POLL_MAX=32

diff --git a/samples/net/sockets/net_mgmt/prj.conf b/samples/net/sockets/net_mgmt/prj.conf
@@ -6,7 +6,6 @@ CONFIG_NET_IPV6=y
 CONFIG_NET_IPV4=y
 CONFIG_NET_SOCKETS=y
 CONFIG_POSIX_API=y
-CONFIG_ZVFS_OPEN_MAX=6
 CONFIG_NET_SOCKETS_NET_MGMT=y
 CONFIG_NET_MGMT_EVENT=y
 

diff --git a/samples/net/sockets/packet/prj.conf b/samples/net/sockets/packet/prj.conf
@@ -7,7 +7,6 @@ CONFIG_NET_IPV4=n
 CONFIG_NET_MAX_CONTEXTS=10
 CONFIG_NET_SOCKETS=y
 CONFIG_POSIX_API=y
-CONFIG_ZVFS_OPEN_MAX=6
 CONFIG_NET_CONTEXT_RCVTIMEO=y
 CONFIG_NET_MGMT=y
 CONFIG_NET_MGMT_EVENT=y

diff --git a/samples/net/zperf/prj.conf b/samples/net/zperf/prj.conf
@@ -23,7 +23,6 @@ CONFIG_NET_TC_TX_COUNT=1
 CONFIG_NET_SOCKETS=y
 CONFIG_NET_SOCKETS_SERVICE_THREAD_PRIO=-1
 CONFIG_ZVFS_POLL_MAX=9
-CONFIG_ZVFS_OPEN_MAX=12
 CONFIG_POSIX_API=y
 
 CONFIG_INIT_STACKS=y

diff --git a/scripts/ci/check_compliance.py b/scripts/ci/check_compliance.py
@@ -1370,6 +1370,7 @@ def check_no_undef_outside_kconfig(self, kconf):
         "ZEPHYR_TRY_MASS_ERASE", # MCUBoot setting described in sysbuild
                                  # documentation
         "ZTEST_FAIL_TEST_",  # regex in tests/ztest/fail/CMakeLists.txt
+        "ZVFS_OPEN_ADD_SIZE_", # Used as an option matching prefix
         # zephyr-keep-sorted-stop
     }
 

diff --git a/snippets/wifi/wifi-ip/wifi-ip.conf b/snippets/wifi/wifi-ip/wifi-ip.conf
@@ -5,7 +5,7 @@ CONFIG_WIFI_NM_WPA_SUPPLICANT=y
 
 # Make sure there is enough resources for supplicant and most of the samples
 CONFIG_MAIN_STACK_SIZE=2048
-CONFIG_ZVFS_OPEN_MAX=24
+CONFIG_ZVFS_OPEN_ADD_SIZE_NET=10
 CONFIG_NET_MAX_CONN=10
 CONFIG_ZVFS_POLL_MAX=10
 

diff --git a/snippets/wifi/wifi-ipv4/wifi-ipv4.conf b/snippets/wifi/wifi-ipv4/wifi-ipv4.conf
@@ -5,7 +5,7 @@ CONFIG_WIFI_NM_WPA_SUPPLICANT=y
 
 # Make sure there is enough resources for supplicant and most of the samples
 CONFIG_MAIN_STACK_SIZE=2048
-CONFIG_ZVFS_OPEN_MAX=24
+CONFIG_ZVFS_OPEN_ADD_SIZE_NET=10
 CONFIG_NET_MAX_CONN=10
 CONFIG_ZVFS_POLL_MAX=10
 

diff --git a/snippets/wifi/wifi-ipv6/wifi-ipv6.conf b/snippets/wifi/wifi-ipv6/wifi-ipv6.conf
@@ -5,7 +5,7 @@ CONFIG_WIFI_NM_WPA_SUPPLICANT=y
 
 # Make sure there is enough resources for supplicant and most of the samples
 CONFIG_MAIN_STACK_SIZE=2048
-CONFIG_ZVFS_OPEN_MAX=24
+CONFIG_ZVFS_OPEN_ADD_SIZE_NET=10
 CONFIG_NET_MAX_CONN=10
 CONFIG_ZVFS_POLL_MAX=10
 

diff --git a/subsys/net/ip/Kconfig b/subsys/net/ip/Kconfig
@@ -509,6 +509,10 @@ config NET_MAX_CONTEXTS
 	  is used when listening or sending network traffic. This is very
 	  similar as one could call a network socket in some other systems.
 
+config ZVFS_OPEN_ADD_SIZE_NET
+	int "Number of network sockets to allocate"
+	default NET_MAX_CONTEXTS
+
 config NET_CONTEXT_NET_PKT_POOL
 	bool "Net_buf TX pool / context"
 	default y if NET_TCP && NET_6LO

diff --git a/subsys/net/lib/dns/dispatcher.c b/subsys/net/lib/dns/dispatcher.c
@@ -31,7 +31,7 @@ NET_BUF_POOL_DEFINE(dns_msg_pool, DNS_RESOLVER_BUF_CTR,
 
 static struct socket_dispatch_table {
 	struct dns_socket_dispatcher *ctx;
-} dispatch_table[CONFIG_ZVFS_OPEN_MAX];
+} dispatch_table[ZVFS_OPEN_SIZE];
 
 static int dns_dispatch(struct dns_socket_dispatcher *dispatcher,
 			int sock, struct sockaddr *addr, size_t addrlen,