cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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cap.c (468B)

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