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diff --git a/sys/kern/subr_capability.c b/sys/kern/subr_capability.c
--- a/sys/kern/subr_capability.c
+++ b/sys/kern/subr_capability.c
@@ -93,6 +93,7 @@
const cap_rights_t cap_pdkill_rights = CAP_RIGHTS_INITIALIZER(CAP_PDKILL);
const cap_rights_t cap_pdwait_rights = CAP_RIGHTS_INITIALIZER(CAP_PDWAIT);
const cap_rights_t cap_pread_rights = CAP_RIGHTS_INITIALIZER(CAP_PREAD);
+const cap_rights_t cap_ptrace_rights = CAP_RIGHTS_INITIALIZER(CAP_PTRACE);
const cap_rights_t cap_pwrite_rights = CAP_RIGHTS_INITIALIZER(CAP_PWRITE);
const cap_rights_t cap_read_rights = CAP_RIGHTS_INITIALIZER(CAP_READ);
const cap_rights_t cap_recv_rights = CAP_RIGHTS_INITIALIZER(CAP_RECV);
diff --git a/sys/sys/caprights.h b/sys/sys/caprights.h
--- a/sys/sys/caprights.h
+++ b/sys/sys/caprights.h
@@ -95,6 +95,7 @@
extern const cap_rights_t cap_pdkill_rights;
extern const cap_rights_t cap_pdwait_rights;
extern const cap_rights_t cap_pread_rights;
+extern const cap_rights_t cap_ptrace_rights;
extern const cap_rights_t cap_pwrite_rights;
extern const cap_rights_t cap_read_rights;
extern const cap_rights_t cap_recv_rights;
diff --git a/sys/sys/capsicum.h b/sys/sys/capsicum.h
--- a/sys/sys/capsicum.h
+++ b/sys/sys/capsicum.h
@@ -299,7 +299,9 @@
/* Allows pddupfd(2). */
#define CAP_PDDUPFD CAPRIGHT(1, 0x0000000000800000ULL)
-#define CAP_UNUSED1_25 CAPRIGHT(1, 0x0000000001000000ULL)
+/* Allows ptrace(PT_PROCDESC) */
+#define CAP_PTRACE CAPRIGHT(1, 0x0000000001000000ULL)
+
#define CAP_UNUSED1_26 CAPRIGHT(1, 0x0000000002000000ULL)
#define CAP_UNUSED1_27 CAPRIGHT(1, 0x0000000004000000ULL)
#define CAP_UNUSED1_28 CAPRIGHT(1, 0x0000000008000000ULL)
@@ -333,8 +335,8 @@
#define CAP_UNUSED1_56 CAPRIGHT(1, 0x0080000000000000ULL)
#define CAP_UNUSED1_57 CAPRIGHT(1, 0x0100000000000000ULL)
-/* All used bits for index 1. */
-#define CAP_ALL1 CAPRIGHT(1, 0x0000000000FFFFFFULL)
+/* All default bits for index 1. */
+#define CAP_ALL1 CAPRIGHT(1, 0x0000000001FFFFFFULL)
/* Backward compatibility. */
#define CAP_POLL_EVENT CAP_EVENT

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