xref: /OK3568_Linux_fs/kernel/tools/perf/util/cap.c (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun  * Capability utilities
4*4882a593Smuzhiyun  */
5*4882a593Smuzhiyun 
6*4882a593Smuzhiyun #ifdef HAVE_LIBCAP_SUPPORT
7*4882a593Smuzhiyun 
8*4882a593Smuzhiyun #include "cap.h"
9*4882a593Smuzhiyun #include <stdbool.h>
10*4882a593Smuzhiyun #include <sys/capability.h>
11*4882a593Smuzhiyun 
perf_cap__capable(cap_value_t cap)12*4882a593Smuzhiyun bool perf_cap__capable(cap_value_t cap)
13*4882a593Smuzhiyun {
14*4882a593Smuzhiyun 	cap_flag_value_t val;
15*4882a593Smuzhiyun 	cap_t caps = cap_get_proc();
16*4882a593Smuzhiyun 
17*4882a593Smuzhiyun 	if (!caps)
18*4882a593Smuzhiyun 		return false;
19*4882a593Smuzhiyun 
20*4882a593Smuzhiyun 	if (cap_get_flag(caps, cap, CAP_EFFECTIVE, &val) != 0)
21*4882a593Smuzhiyun 		val = CAP_CLEAR;
22*4882a593Smuzhiyun 
23*4882a593Smuzhiyun 	if (cap_free(caps) != 0)
24*4882a593Smuzhiyun 		return false;
25*4882a593Smuzhiyun 
26*4882a593Smuzhiyun 	return val == CAP_SET;
27*4882a593Smuzhiyun }
28*4882a593Smuzhiyun 
29*4882a593Smuzhiyun #endif  /* HAVE_LIBCAP_SUPPORT */
30