From f34c701fa8ac90e900488453b8efbe93a1378280 Mon Sep 17 00:00:00 2001
From: Patrick Steinhardt <ps@pks.im>
Date: Thu, 6 Jul 2017 22:59:23 +0200
Subject: setpriv: dump capability bounding set
As with the previous commit, this one implements the ability to dump the
capability bounding set.
function old new delta
setpriv_main 838 982 +144
.rodata 146101 146148 +47
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
---
util-linux/setpriv.c | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
(limited to 'util-linux')
diff --git a/util-linux/setpriv.c b/util-linux/setpriv.c
index a509204a2..c3f9ea153 100644
--- a/util-linux/setpriv.c
+++ b/util-linux/setpriv.c
@@ -82,6 +82,10 @@
#include <sys/prctl.h>
#include "libbb.h"
+#ifndef PR_CAPBSET_READ
+#define PR_CAPBSET_READ 23
+#endif
+
#ifndef PR_SET_NO_NEW_PRIVS
#define PR_SET_NO_NEW_PRIVS 38
#endif
@@ -240,6 +244,25 @@ static int dump(void)
if (i < ARRAY_SIZE(capabilities))
printf("%s%s", fmt, capabilities[i]);
else
+# endif
+ printf("%scap_%u", fmt, i);
+ fmt = ",";
+ }
+ }
+ if (!fmt[0])
+ printf("[none]");
+
+ printf("\nCapability bounding set: ");
+ fmt = "";
+ for (i = 0; cap_valid(i); i++) {
+ int ret = prctl(PR_CAPBSET_READ, (unsigned long) i, 0UL, 0UL, 0UL);
+ if (ret < 0)
+ bb_simple_perror_msg_and_die("prctl: CAPBSET_READ");
+ if (ret) {
+# if ENABLE_FEATURE_SETPRIV_CAPABILITY_NAMES
+ if (i < ARRAY_SIZE(capabilities))
+ printf("%s%s", fmt, capabilities[i]);
+ else
# endif
printf("%scap_%u", fmt, i);
fmt = ",";
--
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