Daniel Borkmann c230f6ba10 bpf: Add kconfig knob for disabling unpriv bpf by default ... commit 08389d8882 upstream. Add a kconfig knob which allows for unprivileged bpf to be disabled by default. If set, the knob sets /proc/sys/kernel/unprivileged_bpf_disabled to value of 2. This still allows a transition of 2 -> {0,1} through an admin. Similarly, this also still keeps 1 -> {1} behavior intact, so that once set to permanently disabled, it cannot be undone aside from a reboot. We've also added extra2 with max of 2 for the procfs handler, so that an admin still has a chance to toggle between 0 <-> 2. Either way, as an additional alternative, applications can make use of CAP_BPF that we added a while ago. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/74ec548079189e4e4dffaeb42b8987bb3c852eee.1620765074.git.daniel@iogearbox.net [fllinden@amazon.com: backported to 5.4] Signed-off-by: Frank van der Linden <fllinden@amazon.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2022-02-16 12:52:49 +01:00
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calibrate.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
do_mounts.c	vfs: Convert ramfs, shmem, tmpfs, devtmpfs, rootfs to use the new mount API	2019-09-12 21:05:34 -04:00
do_mounts.h	fs: add do_mknodat() helper and ksys_mknod() wrapper; remove in-kernel calls to syscall	2018-04-02 20:15:56 +02:00
do_mounts_initrd.c	Merge branch 'mount.part1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2019-01-05 13:25:58 -08:00
do_mounts_md.c	init/: remove ineffective sparse disabling	2018-08-22 10:52:49 -07:00
do_mounts_rd.c	init/: remove ineffective sparse disabling	2018-08-22 10:52:49 -07:00
init_task.c	fgraph: Initialize tracing_graph_pause at task creation	2021-02-10 09:25:29 +01:00
initramfs.c	initramfs: fix clang build failure	2020-12-30 11:51:30 +01:00
Kconfig	bpf: Add kconfig knob for disabling unpriv bpf by default	2022-02-16 12:52:49 +01:00
main.c	pid: take a reference when initializing cad_pid	2021-06-10 13:37:11 +02:00
Makefile	Kbuild: Handle PREEMPT_RT for version string and magic	2019-08-14 01:10:42 +09:00
noinitramfs.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 167	2019-05-30 11:26:39 -07:00
version.c	treewide: Add SPDX license identifier for missed files	2019-05-21 10:50:45 +02:00