Mark Martinec wrote on 11/26/2015 19:31:
Up to about a week ago building world on FreeBSD 10.2-STABLE went
just fine. Today after svn update the build fails:
# make buildworld
[...]
CC='cc ' mkdep -f .depend.getprotoent_test -a
-I/usr/src/lib/libc/tests/net -I/usr/src/lib/libnetbsd
-I/usr/src/contrib/netbsd-tests -std=gnu99
/usr/src/contrib/netbsd-tests/lib/libc/net/t_getprotoent.c
echo getprotoent_test: /usr/obj/usr/src/tmp/usr/lib/libc.a
/usr/obj/usr/src/tmp/usr/lib/private/libatf-c.a >> .depend.getprotoent_test
(cd /usr/src/lib/libc/tests/net && make -f
/usr/src/lib/libc/tests/net/Makefile _RECURSING_PROGS= SUBDIR=
PROG=ether_aton_test DEPENDFILE=.depend.ether_aton_test
.MAKE.DEPENDFILE=.depend.ether_aton_test depend)
/usr/src/contrib/netbsd-tests/lib/libc/net/gen_ether_subr
/usr/src/sys/net/if_ethersubr.c aton_ether_subr.c
make[7]: exec(/usr/src/contrib/netbsd-tests/lib/libc/net/gen_ether_subr)
failed (Permission denied)
*** Error code 1
Stop.
make[7]: stopped in /usr/src/lib/libc/tests/net
*** Error code 1
It turns out that our file system /usr/src had an "exec" flag
turned off, so now running a command:
/usr/src/contrib/netbsd-tests/lib/libc/net/gen_ether_subr
fails with "Permission denied".
It would be valuable if building a system on an exec-protected
src file system would continue to be possible.
Not sure if the /usr/src/contrib/netbsd-tests/lib/libc/net/gen_ether_subr
is the only such new command breaking the build. Anyway, a simple
workaround is to run shell from a command line instead of as a
shebang, i.e.:
# /bin/sh /usr/src/contrib/netbsd-tests/lib/libc/net/gen_ether_subr
instead of:
# /usr/src/contrib/netbsd-tests/lib/libc/net/gen_ether_subr
I was puzzled by similar thing years ago. I was using /var/db and /tmp
mounted with noexec. And then there was some changes. Ports need /var/db
with exec because of some script in /var/db/pkg and /tmp must have exec
too for buildworld or installworld (I don't remember it well, now I
always do mount -u -o current,exec /tmp before build + install world and
kernel)
Anyway - it would be better to not have these partitions mounted with exec.
Miroslav Lachman
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