Release 4.18 tools/testing/selftests/capabilities/validate_cap.c

// SPDX-License-Identifier: GPL-2.0
#include <cap-ng.h>
#include <linux/capability.h>
#include <stdbool.h>
#include <string.h>
#include <stdio.h>
#include <sys/prctl.h>
#include <sys/auxv.h>

#include "../kselftest.h"

#ifndef PR_CAP_AMBIENT

#define PR_CAP_AMBIENT			47

# define PR_CAP_AMBIENT_IS_SET		1

# define PR_CAP_AMBIENT_RAISE		2

# define PR_CAP_AMBIENT_LOWER		3

# define PR_CAP_AMBIENT_CLEAR_ALL	4
#endif

#if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 19)

# define HAVE_GETAUXVAL
#endif



static bool bool_arg(char **argv, int i)
{
	if (!strcmp(argv[i], "0"))
		return false;
	else if (!strcmp(argv[i], "1"))
		return true;
	else {
		ksft_exit_fail_msg("wrong argv[%d]\n", i);
		return false;
	}
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Andrew Lutomirski
53
88.33%
1
50.00%
Shuah Khan
7
11.67%
1
50.00%
Total
60
100.00%
2
100.00%



int main(int argc, char **argv)
{
	const char *atsec = "";

	/*
         * Be careful just in case a setgid or setcapped copy of this
         * helper gets out.
         */

	if (argc != 5)
		ksft_exit_fail_msg("wrong argc\n");

#ifdef HAVE_GETAUXVAL
	if (getauxval(AT_SECURE))
		atsec = " (AT_SECURE is set)";
	else
		atsec = " (AT_SECURE is not set)";
#endif

	capng_get_caps_process();

	if (capng_have_capability(CAPNG_EFFECTIVE, CAP_NET_BIND_SERVICE) != bool_arg(argv, 1)) {
		ksft_print_msg("Wrong effective state%s\n", atsec);
		return 1;
	}

	if (capng_have_capability(CAPNG_PERMITTED, CAP_NET_BIND_SERVICE) != bool_arg(argv, 2)) {
		ksft_print_msg("Wrong permitted state%s\n", atsec);
		return 1;
	}

	if (capng_have_capability(CAPNG_INHERITABLE, CAP_NET_BIND_SERVICE) != bool_arg(argv, 3)) {
		ksft_print_msg("Wrong inheritable state%s\n", atsec);
		return 1;
	}

	if (prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_IS_SET, CAP_NET_BIND_SERVICE, 0, 0, 0) != bool_arg(argv, 4)) {
		ksft_print_msg("Wrong ambient state%s\n", atsec);
		return 1;
	}

	ksft_print_msg("%s: Capabilities after execve were correct\n",
			"validate_cap:");
	return 0;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Andrew Lutomirski
172
92.47%
1
33.33%
Shuah Khan
14
7.53%
2
66.67%
Total
186
100.00%
3
100.00%

Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Andrew Lutomirski
291
92.09%
1
25.00%
Shuah Khan
24
7.59%
2
50.00%
Greg Kroah-Hartman
1
0.32%
1
25.00%
Total
316
100.00%
4
100.00%
Directory: tools/testing/selftests/capabilities

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