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bpf: add destructive kfunc flag

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Add KF_DESTRUCTIVE flag for destructive functions. Functions with this
flag set will require CAP_SYS_BOOT capabilities.

Signed-off-by: Artem Savkov <asavkov@redhat.com>
Link: https://lore.kernel.org/r/20220810065905.475418-2-asavkov@redhat.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Artem Savkov
2022-08-10 08:59:03 +02:00
committed by Alexei Starovoitov
parent 3143d10b09
commit 4dd48c6f1f
3 changed files with 16 additions and 1 deletions
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3
include/linux/btf.h
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@@ -49,7 +49,8 @@
* for this case.
*/
#define KF_TRUSTED_ARGS (1 << 4) /* kfunc only takes trusted pointer arguments */
#define KF_SLEEPABLE (1 << 5) /* kfunc may sleep */
#define KF_SLEEPABLE (1 << 5) /* kfunc may sleep */
#define KF_DESTRUCTIVE (1 << 6) /* kfunc performs destructive actions */
struct btf;
struct btf_member;