diff options
author | Heiko Thiery <heiko.thiery@gmail.com> | 2021-05-08 08:49:26 +0200 |
---|---|---|
committer | David Ahern <dsahern@kernel.org> | 2021-05-17 02:31:29 +0000 |
commit | c5b72cc56bf88160bbf477ec8565fed865e7a1c9 (patch) | |
tree | 72df1a3fe43c5e5749b1f738de4009d4c765dfda /configure | |
parent | 62c88ed9402650823a88c2974efdc39a320dfe7b (diff) |
lib/fs: fix issue when {name,open}_to_handle_at() is not implemented
With commit d5e6ee0dac64 the usage of functions name_to_handle_at() and
open_by_handle_at() are introduced. But these function are not available
e.g. in uclibc-ng < 1.0.35. To have a backward compatibility check for the
availability in the configure script and in case of absence do a direct
syscall.
Fixes: d5e6ee0dac64 ("ss: introduce cgroup2 cache and helper functions")
Cc: Dmitry Yakunin <zeil@yandex-team.ru>
Cc: Petr Vorel <petr.vorel@gmail.com>
Signed-off-by: Heiko Thiery <heiko.thiery@gmail.com>
Reviewed-by: Petr Vorel <petr.vorel@gmail.com>
Signed-off-by: David Ahern <dsahern@kernel.org>
Diffstat (limited to 'configure')
-rwxr-xr-x | configure | 28 |
1 files changed, 28 insertions, 0 deletions
@@ -202,6 +202,31 @@ EOF rm -f $TMPDIR/setnstest.c $TMPDIR/setnstest } +check_name_to_handle_at() +{ + cat >$TMPDIR/name_to_handle_at_test.c <<EOF +#define _GNU_SOURCE +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +int main(int argc, char **argv) +{ + struct file_handle *fhp; + int mount_id, flags, dirfd; + char *pathname; + name_to_handle_at(dirfd, pathname, fhp, &mount_id, flags); + return 0; +} +EOF + if $CC -I$INCLUDE -o $TMPDIR/name_to_handle_at_test $TMPDIR/name_to_handle_at_test.c >/dev/null 2>&1; then + echo "yes" + echo "CFLAGS += -DHAVE_HANDLE_AT" >>$CONFIG + else + echo "no" + fi + rm -f $TMPDIR/name_to_handle_at_test.c $TMPDIR/name_to_handle_at_test +} + check_ipset() { cat >$TMPDIR/ipsettest.c <<EOF @@ -492,6 +517,9 @@ fi echo -n "libc has setns: " check_setns +echo -n "libc has name_to_handle_at: " +check_name_to_handle_at + echo -n "SELinux support: " check_selinux |