[Devel] [PATCH vz10 2/3] selftests: cgroup: give the O_TMPFILE open in get_temp_fd() a mode

[Konstantin Khorenko]

> O_TMPFILE, like O_CREAT, needs the third argument. Without it glibc
> refuses the call at compile time as soon as fortification is on:
> 
>   In function 'open',
>       inlined from 'get_temp_fd' at cgroup_util.c:24:9:
>   /usr/include/bits/fcntl2.h:50:11: error: call to '__open_missing_mode'
>     declared with attribute error: open with O_CREAT or O_TMPFILE in
>     second argument needs 3 arguments
> 
> cgroup/Makefile builds with "-Wall -pthread" and the fortify checks
> take effect only once the compiler optimises, so the cgroup target
> builds. kvm includes ../cgroup/lib/libcgroup.mk and does
> build with -O2, so the shared object fails there and takes the whole
> kvm target with it. Building with -D_FORTIFY_SOURCE=3, as distributions
> commonly do, therefore loses every kvm test rather than anything in
> cgroup.
> 
> Fixes: 844934d16dbc ("selftests/cgroup: move get_temp_fd() to the shared cgroup lib")

commit id from old branch

-- 
Konstantin Khorenko <khorenko at virtuozzo.com>