Unverified Commit 6059b880 authored by Thomas Weißschuh's avatar Thomas Weißschuh Committed by Nathan Chancellor
Browse files

kbuild: uapi: validate that headers do not use libc 



The UAPI headers should be self-contained. That means they should not
use other headers from libc. Currently this is not enforced and various
dependencies have crept in.

Add a check to make sure no new ones are added.

Signed-off-by: default avatarThomas Weißschuh <thomas.weissschuh@linutronix.de>
Link: https://patch.msgid.link/20251223-uapi-nostdinc-v1-1-d91545d794f7@linutronix.de


Signed-off-by: default avatarNathan Chancellor <nathan@kernel.org>
parent 76df6815

usr/include/Makefile

+77 −0
Original line number Diff line number Diff line
@@ -68,12 +68,89 @@ endif 
# asm-generic/*.h is used by asm/*.h, and should not be included directly

no-header-test += asm-generic/%



# The following are using libc header and types.

#

# Do not add a new header to the list without legitimate reason.

# Please consider to fix the header first.

#

# Sorted alphabetically.

uses-libc += linux/a.out.h

uses-libc += linux/atmbr2684.h

uses-libc += linux/auto_dev-ioctl.h

uses-libc += linux/auto_fs.h

uses-libc += linux/auto_fs4.h

uses-libc += linux/btrfs_tree.h

uses-libc += linux/cec-funcs.h

uses-libc += linux/cec.h

uses-libc += linux/dvb/dmx.h

uses-libc += linux/dvb/video.h

uses-libc += linux/ethtool.h

uses-libc += linux/ethtool_netlink.h

uses-libc += linux/fuse.h

uses-libc += linux/gsmmux.h

uses-libc += linux/icmp.h

uses-libc += linux/idxd.h

uses-libc += linux/if.h

uses-libc += linux/if_arp.h

uses-libc += linux/if_bonding.h

uses-libc += linux/if_pppox.h

uses-libc += linux/if_tunnel.h

uses-libc += linux/input.h

uses-libc += linux/ip6_tunnel.h

uses-libc += linux/joystick.h

uses-libc += linux/llc.h

uses-libc += linux/mctp.h

uses-libc += linux/mdio.h

uses-libc += linux/mii.h

uses-libc += linux/mptcp.h

uses-libc += linux/netdevice.h

uses-libc += linux/netfilter/xt_RATEEST.h

uses-libc += linux/netfilter/xt_hashlimit.h

uses-libc += linux/netfilter/xt_physdev.h

uses-libc += linux/netfilter/xt_rateest.h

uses-libc += linux/netfilter_arp/arp_tables.h

uses-libc += linux/netfilter_arp/arpt_mangle.h

uses-libc += linux/netfilter_bridge.h

uses-libc += linux/netfilter_bridge/ebtables.h

uses-libc += linux/netfilter_ipv4.h

uses-libc += linux/netfilter_ipv4/ip_tables.h

uses-libc += linux/netfilter_ipv6.h

uses-libc += linux/netfilter_ipv6/ip6_tables.h

uses-libc += linux/route.h

uses-libc += linux/shm.h

uses-libc += linux/soundcard.h

uses-libc += linux/string.h

uses-libc += linux/tipc_config.h

uses-libc += linux/uhid.h

uses-libc += linux/uinput.h

uses-libc += linux/vhost.h

uses-libc += linux/vhost_types.h

uses-libc += linux/virtio_ring.h

uses-libc += linux/wireless.h

uses-libc += regulator/regulator.h

uses-libc += scsi/fc/fc_els.h



ifeq ($(SRCARCH),hexagon)

uses-libc += asm/sigcontext.h

endif



ifeq ($(SRCARCH),nios2)

uses-libc += asm/ptrace.h

uses-libc += linux/bpf_perf_event.h

endif



ifeq ($(SRCARCH),s390)

uses-libc += asm/chpid.h

uses-libc += asm/chsc.h

endif



always-y := $(patsubst $(obj)/%.h,%.hdrtest, $(shell find $(obj) -name '*.h' 2>/dev/null))



# Include the header twice to detect missing include guard.

quiet_cmd_hdrtest = HDRTEST $<

      cmd_hdrtest = \

		$(CC) $(c_flags) -fsyntax-only -Werror -x c /dev/null \

			$(if $(filter-out $(uses-libc), $*.h), -nostdinc) \

			$(if $(filter-out $(no-header-test), $*.h), -include $< -include $<); \

		$(PERL) $(src)/headers_check.pl $(obj) $<; \

		touch $@