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/*--------------------------------------------------------------------
* Copyright © 2016 James Hunt <jamesodhunt@ubuntu.com>.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*--------------------------------------------------------------------
*/
#ifndef _PROCENV_PLATFORM_LINUX_H
#define _PROCENV_PLATFORM_LINUX_H
/* required for sched_getcpu() (from sched.h) */
#define _GNU_SOURCE
#include "platform.h"
#include "util.h"
#define ROOT_PATH "/proc/self/root"
#if defined (HAVE_NUMA_H)
#include <numa.h>
#include <numaif.h>
#if LIBNUMA_API_VERSION == 2
#define PROCENV_NUMA_BITMASK_ISSET(mask, node) numa_bitmask_isbitset ((mask), (node))
#else
#define PROCENV_NUMA_BITMASK_ISSET(mask, node) nodemask_isset (&(mask), (node))
#endif
#endif /* HAVE_NUMA_H */
/**
* LINUX_KERNEL_M:
* @major: Linux major kernel version number.
*
* Returns: true if running Linux kernel is atleast at version
* specified by @major else false.
**/
#define LINUX_KERNEL_M(major) \
(linux_kernel_version (major, -1, -1))
/**
* LINUX_KERNEL_MM:
* @major: Linux major kernel version number,
* @minor: Linux minor kernel version number.
*
* Returns: true if running Linux kernel is atleast at version
* specified by (@major, @minor) else false.
**/
#define LINUX_KERNEL_MM(major, minor) \
(linux_kernel_version (major, minor, -1))
/**
* LINUX_KERNEL_MMR:
* @major: Linux major kernel version number,
* @minor: Linux minor kernel version number,
* @revision: kernel revision version.
*
* Returns: true if running Linux kernel is atleast at version
* specified by (@major, @minor, @revision) else false.
**/
#define LINUX_KERNEL_MMR(major, minor, revision) \
(linux_kernel_version (major, minor, revision))
/**
* show_capability:
* @caps: cap_t,
* @cap: capability.
*
* Display specified capability, or NOT_DEFINED_STR if value is
* unknown.
**/
#ifdef PR_CAPBSET_READ
#define show_capability(caps, cap) \
_show_capability (caps, cap, #cap)
#define _show_capability(caps, cap, name) \
{ \
int bound; \
int effective; \
int inheritable; \
int permitted; \
\
bound = cap_get_bound (cap); \
\
effective = get_capability_by_flag_type (caps, CAP_EFFECTIVE, cap); \
inheritable = get_capability_by_flag_type (caps, CAP_INHERITABLE, cap); \
permitted = get_capability_by_flag_type (caps, CAP_PERMITTED, cap); \
\
section_open (name); \
\
entry ("number", "%d", cap); \
\
entry ("supported", "%s", \
CAP_IS_SUPPORTED (cap) \
? YES_STR : NO_STR); \
\
entry ("in bounding set", "%s", \
bound < 0 \
? UNKNOWN_STR \
: bound \
? YES_STR \
: NO_STR); \
\
entry ("effective", "%s", \
effective < 0 \
? NOT_DEFINED_STR \
: effective == CAP_SET \
? YES_STR \
: NO_STR); \
\
entry ("inheritable", "%s", \
inheritable < 0 \
? NOT_DEFINED_STR \
: inheritable == CAP_SET \
? YES_STR \
: NO_STR); \
\
entry ("permitted", "%s", \
permitted < 0 \
? NOT_DEFINED_STR \
: permitted == CAP_SET \
? YES_STR \
: NO_STR); \
\
section_close (); \
}
#else
#define show_capability(caps, cap)
#endif
#if defined (HAVE_SYS_CAPABILITY_H)
#ifndef CAP_IS_SUPPORTED
static int cap_get_bound (cap_value_t cap)
__attribute__((unused));
#define CAP_IS_SUPPORTED(cap) (cap_get_bound (cap) >= 0)
#define PROCENV_NEED_LOCAL_CAP_GET_BOUND
#endif /* CAP_IS_SUPPORTED */
#endif /* HAVE_SYS_CAPABILITY_H */
/* semctl(2) states that POSIX.1-2001 requires the caller define this! */
union semun {
int val;
struct semid_ds *buf;
unsigned short int *array;
struct seminfo *__buf;
};
static bool linux_kernel_version (int major, int minor, int revision);
static int get_capability_by_flag_type (cap_t cap_p, cap_flag_t type, cap_value_t cap)
__attribute__((unused));
#if defined (HAVE_SYS_CAPABILITY_H)
int get_capability_by_flag_type (cap_t cap_p, cap_flag_t type, cap_value_t cap);
#endif /* HAVE_SYS_CAPABILITY_H */
#endif /* _PROCENV_PLATFORM_LINUX_H */
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