Date: Mon, 07 Dec 2015 16:35:05 +0100 From: Mark Martinec <Mark.Martinec+freebsd@ijs.si> To: freebsd-stable@freebsd.org Subject: Re: A recent 10.2-STABLE no longer builds on a no-exec /usr/src file system Message-ID: <484e5e28706f1d717bcd02542e7ba306@mailbox.ijs.si> In-Reply-To: <56575324.9070400@quip.cz> References: <636a770981c5655f3cc45f2c6aee6474@mailbox.ijs.si> <56575324.9070400@quip.cz>
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So, is this a new state of affairs that /usr/src file system needs to be mounted exec in order for buildworld to succeed, or is this an unintended change and I should file a bug report? Mark On 2015-11-26 19:44, Miroslav Lachman wrote: > 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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