David Rheinsberg b6f79e826f net/unix: use consistent error code in SO_PEERPIDFD ... Change the new (unreleased) SO_PEERPIDFD sockopt to return ENODATA rather than ESRCH if a socket type does not support remote peer-PID queries. Currently, SO_PEERPIDFD returns ESRCH when the socket in question is not an AF_UNIX socket. This is quite unexpected, given that one would assume ESRCH means the peer process already exited and thus cannot be found. However, in that case the sockopt actually returns EINVAL (via pidfd_prepare()). This is rather inconsistent with other syscalls, which usually return ESRCH if a given PID refers to a non-existant process. This changes SO_PEERPIDFD to return ENODATA instead. This is also what SO_PEERGROUPS returns, and thus keeps a consistent behavior across sockopts. Note that this code is returned in 2 cases: First, if the socket type is not AF_UNIX, and secondly if the socket was not yet connected. In both cases ENODATA seems suitable. Signed-off-by: David Rheinsberg <david@readahead.eu> Reviewed-by: Christian Brauner <brauner@kernel.org> Acked-by: Luca Boccassi <bluca@debian.org> Fixes: 7b26952a91 ("net: core: add getsockopt SO_PEERPIDFD") Link: https://lore.kernel.org/r/20230807081225.816199-1-david@readahead.eu Signed-off-by: Jakub Kicinski <kuba@kernel.org>		2023-08-08 15:56:48 -07:00
..
bpf_sk_storage.c	bpf: Add length check for SK_DIAG_BPF_STORAGE_REQ_MAP_FD parsing	2023-07-27 10:07:56 -07:00
datagram.c	net: datagram: fix data-races in datagram_poll()	2023-05-10 19:06:49 -07:00
dev_addr_lists_test.c	kunit: Use KUNIT_EXPECT_MEMEQ macro	2022-10-27 02:40:14 -06:00
dev_addr_lists.c	net: extract a few internals from netdevice.h	2022-04-07 20:32:09 -07:00
dev_ioctl.c	net: dsa: replace NETDEV_PRE_CHANGE_HWTSTAMP notifier with a stub	2023-04-09 15:35:49 +01:00
dev.c	net: fix net device address assign type	2023-06-22 19:55:12 -07:00
dev.h	net-sysctl: factor-out rpm mask manipulation helpers	2023-02-09 17:45:55 -08:00
drop_monitor.c	net: extend drop reasons for multiple subsystems	2023-04-20 20:20:49 -07:00
dst_cache.c	wireguard: device: reset peer src endpoint when netns exits	2021-11-29 19:50:45 -08:00
dst.c	net: dst: fix missing initialization of rt_uncached	2023-04-21 20:26:56 -07:00
failover.c	net: failover: use IFF_NO_ADDRCONF flag to prevent ipv6 addrconf	2022-12-12 15:18:25 -08:00
fib_notifier.c
fib_rules.c	fib: expand fib_rule_policy	2021-12-16 07:18:35 -08:00
filter.c	net: core: remove unnecessary frame_sz check in bpf_xdp_adjust_tail()	2023-08-07 19:14:41 -07:00
flow_dissector.c	net: flow_dissector: add support for cfm packets	2023-06-12 17:01:45 -07:00
flow_offload.c	net: flow_offload: add support for ARP frame matching	2022-11-14 11:24:16 +00:00
gen_estimator.c	treewide: Convert del_timer*() to timer_shutdown*()	2022-12-25 13:38:09 -08:00
gen_stats.c	net: Remove the obsolte u64_stats_fetch_*_irq() users (net).	2022-10-28 20:13:54 -07:00
gro_cells.c	net: drop the weight argument from netif_napi_add	2022-09-28 18:57:14 -07:00
gro.c	gro: move the tc_ext comparison to a helper	2023-06-18 18:08:35 +01:00
gso.c	net: move gso declarations and functions to their own files	2023-06-10 00:11:41 -07:00
hwbm.c
link_watch.c	net: linkwatch: only report IF_OPER_LOWERLAYERDOWN if iflink is actually down	2022-11-16 09:45:00 +00:00
lwt_bpf.c	bpf, lwt: Fix crash when using bpf_skb_set_tunnel_key() from bpf_xmit lwt hook	2022-04-22 17:45:25 +02:00
lwtunnel.c	xfrm: lwtunnel: squelch kernel warning in case XFRM encap type is not available	2022-10-12 10:45:51 +02:00
Makefile	net: move gso declarations and functions to their own files	2023-06-10 00:11:41 -07:00
neighbour.c	neighbour: switch to standard rcu, instead of rcu_bh	2023-03-21 21:32:18 -07:00
net_namespace.c	lib/ref_tracker: improve printing stats	2023-06-05 15:28:42 -07:00
net-procfs.c	net-sysfs: display two backlog queue len separately	2023-03-22 12:03:52 +01:00
net-sysfs.c	net: make default_rps_mask a per netns attribute	2023-02-20 11:22:54 +00:00
net-sysfs.h
net-traces.c	udp6: add a missing call into udp_fail_queue_rcv_skb tracepoint	2023-07-07 09:16:52 +01:00
netclassid_cgroup.c	core: Variable type completion	2022-08-31 09:40:34 +01:00
netdev-genl-gen.c	net: ynl: prefix uAPI header include with uapi/	2023-05-26 10:30:14 +01:00
netdev-genl-gen.h	net: ynl: prefix uAPI header include with uapi/	2023-05-26 10:30:14 +01:00
netdev-genl.c	netdev-genl: create a simple family for netdev stuff	2023-02-02 20:48:23 -08:00
netevent.c	net: core: Correct function name netevent_unregister_notifier() in the kerneldoc	2021-03-28 17:56:56 -07:00
netpoll.c	netpoll: allocate netdev tracker right away	2023-06-15 08:21:11 +01:00
netprio_cgroup.c	bpf, cgroups: Fix cgroup v2 fallback on v1/v2 mixed mode	2021-09-13 16:35:58 -07:00
of_net.c	of: net: export of_get_mac_address_nvmem()	2022-11-29 10:45:53 +01:00
page_pool.c	page_pool: fix inconsistency for page_pool_ring_[un]lock()	2023-05-23 20:25:13 -07:00
pktgen.c	net: introduce and use skb_frag_fill_page_desc()	2023-05-13 19:47:56 +01:00
ptp_classifier.c	ptp: Add generic PTP is_sync() function	2022-03-07 11:31:34 +00:00
request_sock.c
rtnetlink.c	rtnetlink: let rtnl_bridge_setlink checks IFLA_BRIDGE_MODE length	2023-07-27 17:14:01 -07:00
scm.c	net: Ensure ->msg_control_user is used for user buffers	2023-04-14 11:09:27 +01:00
secure_seq.c	tcp: Fix data-races around sysctl knobs related to SYN option.	2022-07-20 10:14:49 +01:00
selftests.c	net: core: constify mac addrs in selftests	2021-10-24 13:59:44 +01:00
skbuff.c	net: prevent skb corruption on frag list segmentation	2023-07-08 10:03:26 +01:00
skmsg.c	bpf, sockmap: Avoid potential NULL dereference in sk_psock_verdict_data_ready()	2023-06-01 14:44:53 +02:00
sock_destructor.h	skb_expand_head() adjust skb->truesize incorrectly	2021-10-22 12:35:51 -07:00
sock_diag.c	net: fix __sock_gen_cookie()	2022-11-21 20:36:30 -08:00
sock_map.c	bpf: sockmap: Remove preempt_disable in sock_map_sk_acquire	2023-08-01 09:24:34 +02:00
sock_reuseport.c	soreuseport: Fix socket selection for SO_INCOMING_CPU.	2022-10-25 11:35:16 +02:00
sock.c	net/unix: use consistent error code in SO_PEERPIDFD	2023-08-08 15:56:48 -07:00
stream.c	net: deal with most data-races in sk_wait_event()	2023-05-10 10:03:32 +01:00
sysctl_net_core.c	net/sysctl: Rename kvfree_rcu() to kvfree_rcu_mightsleep()	2023-04-05 13:48:04 +00:00
timestamping.c
tso.c	net: tso: inline tso_count_descs()	2022-12-12 15:04:39 -08:00
utils.c	net: core: inet[46]_pton strlen len types	2022-11-01 21:14:39 -07:00
xdp.c	xdp: use trusted arguments in XDP hints kfuncs	2023-07-11 20:04:50 -07:00