diff options
| -rw-r--r-- | sys/sys/sysctl.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/sys/sys/sysctl.h b/sys/sys/sysctl.h index 653dfd5..7c314e2 100644 --- a/sys/sys/sysctl.h +++ b/sys/sys/sysctl.h @@ -322,6 +322,13 @@ TAILQ_HEAD(sysctl_ctx_list, sysctl_ctx_entry); sysctl_add_oid(ctx, parent, nbr, name, (access), \ ptr, arg, handler, fmt, __DESCR(descr)) +/* + * A macro to generate a read-only sysctl to indicate the presense of optional + * kernel features. + */ +#define FEATURE(name, desc) \ + SYSCTL_INT(_kern_features, OID_AUTO, name, CTLFLAG_RD, 0, 1, desc) + #endif /* _KERNEL */ /* @@ -621,6 +628,7 @@ TAILQ_HEAD(sysctl_ctx_list, sysctl_ctx_entry); */ extern struct sysctl_oid_list sysctl__children; SYSCTL_DECL(_kern); +SYSCTL_DECL(_kern_features); SYSCTL_DECL(_kern_ipc); SYSCTL_DECL(_kern_proc); SYSCTL_DECL(_sysctl); |
