Arnd Bergmann ba61a8d9d7 can: avoid using timeval for uapi ... The can subsystem communicates with user space using a bcm_msg_head header, which contains two timestamps. This is problematic for multiple reasons: a) The structure layout is currently incompatible between 64-bit user space and 32-bit user space, and cannot work in compat mode (other than x32). b) The timeval structure layout will change in 32-bit user space when we fix the y2038 overflow problem by redefining time_t to 64-bit, making new 32-bit user space incompatible with the current kernel interface. Cars last a long time and often use old kernels, so the actual users of this code are the most likely ones to migrate to y2038 safe user space. This tries to work around part of the problem by changing the publicly visible user interface in the header, but not the binary interface. Fortunately, the values passed around in the structure are relative times and do not actually suffer from the y2038 overflow, so 32-bit is enough here. We replace the use of 'struct timeval' with a newly defined 'struct bcm_timeval' that uses the exact same binary layout as before and that still suffers from problem a) but not problem b). The downside of this approach is that any user space program that currently assigns a timeval structure to these members rather than writing the tv_sec/tv_usec portions individually will suffer a compile-time error when built with an updated kernel header. Fixing this error makes it work fine with old and new headers though. We could address problem a) by using '__u32' or 'int' members rather than 'long', but that would have a more significant downside in also breaking support for all existing 64-bit user binaries that might be using this interface, which is likely not acceptable. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Oliver Hartkopp <socketcan@hartkopp.net> Cc: linux-can@vger.kernel.org Cc: linux-api@vger.kernel.org Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>		2015-10-13 17:42:34 +02:00
..
android
byteorder
caif
can	can: avoid using timeval for uapi	2015-10-13 17:42:34 +02:00
cifs
dvb
genwqe
hdlc
hsi
iio
isdn
mmc
netfilter	netfilter: nf_conntrack: add efficient mark to zone mapping	2015-08-18 01:24:05 +02:00
netfilter_arp
netfilter_bridge
netfilter_ipv4
netfilter_ipv6	netfilter: ip6t_REJECT: added missing icmpv6 codes	2015-08-26 20:32:35 +02:00
nfsd
raid
spi
sunrpc
tc_act
tc_ematch
usb	cdc: add header guards	2015-09-15 21:53:24 -07:00
wimax
a.out.h
acct.h
adb.h
adfs_fs.h
affs_hardblocks.h
agpgart.h
aio_abi.h
am437x-vpfe.h
apm_bios.h
arcfb.h
atalk.h
atm.h
atm_eni.h
atm_he.h
atm_idt77105.h
atm_nicstar.h
atm_tcp.h
atm_zatm.h	atm: remove 'struct zatm_t_hist'	2015-10-05 03:16:46 -07:00
atmapi.h
atmarp.h
atmbr2684.h
atmclip.h
atmdev.h
atmioc.h
atmlec.h
atmmpc.h
atmppp.h
atmsap.h
atmsvc.h
audit.h	Merge branch 'upstream' of git://git.infradead.org/users/pcmoore/audit	2015-09-08 13:34:59 -07:00
auto_fs.h
auto_fs4.h
auxvec.h
ax25.h
b1lli.h
baycom.h
bcache.h
bcm933xx_hcs.h
bfs_fs.h
binfmts.h
blkpg.h
blktrace_api.h
bpf.h	sched, bpf: add helper for retrieving routing realms	2015-10-03 05:02:41 -07:00
bpf_common.h
bpqether.h
bsg.h
btrfs.h
can.h
capability.h
capi.h
cciss_defs.h
cciss_ioctl.h
cdrom.h
cgroupstats.h
chio.h
cm4000_cs.h
cn_proc.h
coda.h
coda_psdev.h
coff.h
connector.h
const.h
cramfs_fs.h
cryptouser.h
cuda.h
cyclades.h
cycx_cfm.h
dcbnl.h
dccp.h
dlm.h
dlm_device.h	dlm: fix lvb copy for user locks	2015-08-25 14:41:50 -05:00
dlm_netlink.h
dlm_plock.h
dlmconstants.h
dm-ioctl.h	dm stats: report precise_timestamps and histogram in @stats_list output	2015-08-18 17:20:03 -04:00
dm-log-userspace.h
dn.h
dqblk_xfs.h
edd.h
efs_fs_sb.h
elf-em.h	elf-em.h: move EM_MICROBLAZE to the common header	2015-09-10 06:54:15 +02:00
elf-fdpic.h
elf.h
elfcore.h
errno.h
errqueue.h
ethtool.h
eventpoll.h
fadvise.h
falloc.h
fanotify.h
fb.h
fcntl.h
fd.h
fdreg.h
fib_rules.h	fib: Add fib rule match on tunnel id	2015-07-21 10:39:06 -07:00
fiemap.h
filter.h
firewire-cdev.h
firewire-constants.h
flat.h
fou.h
fs.h
fsl_hypervisor.h
fuse.h
futex.h
gameport.h
gen_stats.h
genetlink.h
gfs2_ondisk.h
gigaset_dev.h
gsmmux.h	tty: linux/gsmmux.h needs linux/types.h	2015-07-23 17:48:43 -07:00
hash_info.h
hdlc.h
hdlcdrv.h
hdreg.h
hid.h
hiddev.h
hidraw.h
hpet.h
hsr_netlink.h
hw_breakpoint.h
hyperv.h
hysdn_if.h
i2c-dev.h
i2c.h
i2o-dev.h
i8k.h
icmp.h
icmpv6.h
if.h
if_addr.h
if_addrlabel.h
if_alg.h
if_arcnet.h	arcnet: fix indentation of if_arcnet.h	2015-09-23 08:44:22 +02:00
if_arp.h
if_bonding.h
if_bridge.h	bridge: vlan: add per-vlan struct and move to rhashtables	2015-09-29 13:36:06 -07:00
if_cablemodem.h
if_eql.h
if_ether.h	ether: add IEEE 1722 ethertype - TSN	2015-09-09 22:06:29 -07:00
if_fc.h
if_fddi.h
if_frad.h
if_hippi.h
if_infiniband.h
if_link.h	bridge: netlink: add support for port's multicast_router attribute	2015-10-07 04:49:34 -07:00
if_ltalk.h
if_packet.h	packet: add extended BPF fanout mode	2015-08-17 14:22:48 -07:00
if_phonet.h
if_plip.h
if_ppp.h
if_pppol2tp.h
if_pppox.h
if_slip.h
if_team.h
if_tun.h
if_tunnel.h	ip_gre: Add support to collect tunnel metadata.	2015-08-10 14:03:54 -07:00
if_vlan.h
if_x25.h
igmp.h
ila.h	net: Identifier Locator Addressing module	2015-08-17 21:33:06 -07:00
in.h
in6.h
in_route.h
inet_diag.h
inotify.h
input.h
ioctl.h
ip.h
ip6_tunnel.h
ip_vs.h	ipvs: add more mcast parameters for the sync daemon	2015-08-21 09:10:11 -07:00
ipc.h
ipmi.h
ipmi_msgdefs.h
ipsec.h
ipv6.h	net: ipv6 sysctl option to ignore routes when nexthop link is down	2015-08-13 21:27:19 -07:00
ipv6_route.h
ipx.h
irda.h
irqnr.h
isdn.h
isdn_divertif.h
isdn_ppp.h
isdnif.h
iso_fs.h
ivtv.h
ivtvfb.h
ixjuser.h
jffs2.h
joystick.h
Kbuild	sys_membarrier(): system-wide memory barrier (generic, x86)	2015-09-11 15:21:34 -07:00
kcmp.h
kd.h
kdev_t.h
kernel-page-flags.h	proc: export idle flag via kpageflags	2015-09-10 13:29:01 -07:00
kernel.h
kernelcapi.h
kexec.h
keyboard.h
keyctl.h
kfd_ioctl.h
kvm.h	Patch queue for ppc - 2015-08-22	2015-08-22 14:57:59 -07:00
kvm_para.h
l2tp.h
libc-compat.h
limits.h
llc.h
loop.h
lp.h
lwtunnel.h	lwtunnel: remove source and destination UDP port config option	2015-09-24 14:31:37 -07:00
magic.h
major.h
map_to_7segment.h
matroxfb.h
mdio.h
media-bus-format.h
media.h
mei.h	mei: add async event notification ioctls	2015-08-03 17:30:00 -07:00
membarrier.h	sys_membarrier(): system-wide memory barrier (generic, x86)	2015-09-11 15:21:34 -07:00
memfd.h
mempolicy.h
meye.h
mic_common.h
mic_ioctl.h
mii.h
minix_fs.h
mman.h
mmtimer.h
module.h
mpls.h	mpls: Use definition for reserved label checks	2015-08-03 22:35:00 -07:00
mpls_iptunnel.h	mpls: ip tunnel support	2015-07-21 10:39:05 -07:00
mqueue.h
mroute.h
mroute6.h
msdos_fs.h
msg.h
mtio.h
n_r3964.h
nbd.h
ncp.h
ncp_fs.h
ncp_mount.h
ncp_no.h
ndctl.h	libnvdimm: Add DSM support for Address Range Scrub commands	2015-07-27 22:53:19 -04:00
neighbour.h	net: add explicit logging and stat for neighbour table overflow	2015-08-10 13:46:21 -07:00
net.h
net_dropmon.h
net_namespace.h
net_tstamp.h
netconf.h
netdevice.h
netfilter.h
netfilter_arp.h
netfilter_bridge.h
netfilter_decnet.h
netfilter_ipv4.h
netfilter_ipv6.h
netlink.h	net: Add support for filtering neigh dump by master device	2015-09-29 21:33:54 -07:00
netlink_diag.h
netrom.h
nfc.h
nfs.h
nfs2.h
nfs3.h
nfs4.h	NFS: Update NFS4_BITMAP_SIZE	2015-08-27 19:44:53 -04:00
nfs4_mount.h
nfs_fs.h
nfs_idmap.h
nfs_mount.h
nfsacl.h
nl80211.h
nubus.h
nvme.h	NVMe: Add nvme subsystem reset IOCTL	2015-08-18 11:56:13 -06:00
nvram.h
omap3isp.h
omapfb.h
oom.h
openvswitch.h	openvswitch: netlink attributes for IPv6 tunneling	2015-10-07 04:18:00 -07:00
packet_diag.h
param.h
parport.h
patchkey.h
pci.h
pci_regs.h
perf_event.h	perf: Add cycles to branch_info	2015-08-04 10:16:57 +02:00
personality.h
pfkeyv2.h
pg.h
phantom.h
phonet.h
pkt_cls.h	bpf: add bpf_redirect() helper	2015-09-17 21:09:07 -07:00
pkt_sched.h
pktcdvd.h
pmu.h
poll.h
posix_types.h
ppdev.h
ppp-comp.h
ppp-ioctl.h
ppp_defs.h
pps.h
prctl.h	capabilities: ambient capabilities	2015-09-04 16:54:41 -07:00
psci.h
ptp_clock.h
ptrace.h
qnx4_fs.h
qnxtypes.h
quota.h
radeonfb.h
random.h
raw.h
rds.h
reboot.h
reiserfs_fs.h
reiserfs_xattr.h
resource.h
rfkill.h
romfs_fs.h
rose.h
route.h
rtc.h
rtnetlink.h	rtnetlink: RTEXT_FILTER_SKIP_STATS support to avoid dumping inet/inet6 stats	2015-09-15 15:25:02 -07:00
scc.h
sched.h
scif_ioctl.h
screen_info.h
sctp.h
sdla.h
seccomp.h
securebits.h	capabilities: add a securebit to disable PR_CAP_AMBIENT_RAISE	2015-09-04 16:54:41 -07:00
selinux_netlink.h
sem.h
serial.h
serial_core.h
serial_reg.h
serio.h
shm.h
signal.h
signalfd.h
smiapp.h
snmp.h	net: track success and failure of TCP PMTU probing	2015-07-21 22:36:33 -07:00
sock_diag.h
socket.h
sockios.h
sonet.h
sonypi.h
sound.h
soundcard.h
stat.h
stddef.h
string.h
suspend_ioctls.h
swab.h
synclink.h
sysctl.h
sysinfo.h
target_core_user.h	target: use stringify.h instead of own definition	2015-09-11 00:32:36 -07:00
taskstats.h
tcp.h
tcp_metrics.h
telephony.h
termios.h
thermal.h
time.h
times.h
timex.h
tiocl.h
tipc.h
tipc_config.h
tipc_netlink.h
toshiba.h	toshiba_acpi: Add /dev/toshiba_acpi device	2015-07-24 14:15:10 -07:00
tty.h
tty_flags.h
types.h
udf_fs_i.h
udp.h
uhid.h
uinput.h
uio.h
ultrasound.h
un.h
unistd.h
unix_diag.h
usbdevice_fs.h
usbip.h
userfaultfd.h	userfaultfd: remove kernel header include from uapi header	2015-10-01 21:42:35 -04:00
utime.h
utsname.h
uuid.h
uvcvideo.h
v4l2-common.h
v4l2-controls.h
v4l2-dv-timings.h
v4l2-mediabus.h
v4l2-subdev.h
veth.h
vfio.h
vhost.h
videodev2.h
virtio_9p.h
virtio_balloon.h
virtio_blk.h
virtio_config.h
virtio_console.h
virtio_gpu.h
virtio_ids.h
virtio_input.h
virtio_net.h
virtio_pci.h
virtio_ring.h
virtio_rng.h
virtio_scsi.h
virtio_types.h
vm_sockets.h
vsp1.h
vt.h
wait.h
wanrouter.h
watchdog.h
wil6210_uapi.h
wimax.h
wireless.h
x25.h
xattr.h
xfrm.h
xilinx-v4l2-controls.h
zorro.h
zorro_ids.h