perf/util/cap.c

0001 // SPDX-License-Identifier: GPL-2.0
0002 /*
0003  * Capability utilities
0004  */
0005
0006 #ifdef HAVE_LIBCAP_SUPPORT
0007
0008 #include "cap.h"
0009 #include <stdbool.h>
0010 #include <sys/capability.h>
0011
0012 bool perf_cap__capable(cap_value_t cap)
0013 {
0014     cap_flag_value_t val;
0015     cap_t caps = cap_get_proc();
0016
0017     if (!caps)
0018         return false;
0019
0020     if (cap_get_flag(caps, cap, CAP_EFFECTIVE, &val) != 0)
0021         val = CAP_CLEAR;
0022
0023     if (cap_free(caps) != 0)
0024         return false;
0025
0026     return val == CAP_SET;
0027 }
0028
0029 #endif  /* HAVE_LIBCAP_SUPPORT */