/* $Id: machine.h,v 2.9 2012/09/24 17:45:09 ksb Exp $
 */

#if !defined(USE_KVM_FROM_GETPROCS)
#define USE_KVM_FROM_GETPROCS	(defined(NETBSD))
#endif
#if !defined(USE_KVM_FROM_PROC)
#define USE_KVM_FROM_PROC	(defined(LINUX))
#endif
#if !defined(USE_KVM_FROM_PSINFO)
#define USE_KVM_FROM_PSINFO	(defined(IBMR2)||defined(AIX))
#endif
#if !defined(USE_KVM_FROM_PSTAT_GETPROC)
#define USE_KVM_FROM_PSTAT_GETPROC	(defined(HPUX11)||defined(HPUX10))
#endif

#if USE_KVM_FROM_GETPROCS
#include <kvm.h>
#include <sys/param.h>
#endif
#if !USE_KVM_FROM_PSINFO && !USE_KVM_FROM_PSTAT_GETPROC
#include <sys/sysctl.h>
#endif

#if USE_KVM_FROM_PROC || USE_KVM_FROM_PSINFO || USE_KVM_FROM_PSTAT_GETPROC

#if !defined(KERN_PROC_ALL)
#define KERN_PROC_ALL	0
#endif
#if !defined(MAXCOMLEN)
#define MAXCOMLEN	16
#endif

/* How much of the command line to stop in the ptree
 */
#if !defined(XM_2BIG)
#define	XM_2BIG		(8192-sizeof(long))
#endif

typedef struct kinfo_proc {
	pid_t xm_ppid;
	pid_t xm_pid;
	uid_t xm_ruid;
	gid_t xm_rgid;
	char xm_comm[(XM_2BIG|(sizeof(long)-1))+1];
} XMkinfo_proc;
#define PTREE_FIND_PPID	xm_ppid
#define PTREE_FIND_PID	xm_pid
#define PTREE_FIND_COMM xm_comm
#define PTREE_FIND_RUID xm_ruid

typedef struct XMkvm {
	struct kinfo_proc *pKImem;
} kvm_t;
extern kvm_t *kvm_openfiles(const char *pcExec, const char *pcCore, const char *pcSwap, int iFlags, char *pcError);
extern struct kinfo_proc *kvm_getprocs(kvm_t *pkvm, int iFlag, int Junk, int *piEntries);
extern int kvm_close(kvm_t *pkvm);
extern char **kvm_getargv(kvm_t *, struct kinfo_proc *, int);
extern char *kvm_geterr(kvm_t *);

#else
#include <nlist.h>
#include <kvm.h>

/* FreeBSD < 6.0 uses a more nested structure to get to the
 * fields we need to see, 6.0 and up use more more like NetBSD.		(ksb)
 */
#if defined(NETBSD)
#define PTREE_FIND_PPID	kp_eproc.e_ppid
#define PTREE_FIND_PID	kp_proc.p_pid
#define PTREE_FIND_COMM kp_proc.p_comm
#define PTREE_FIND_RUID kp_eproc.e_pcred.p_ruid
#else
#if defined(FREEBSD) && (HOSTOS < 50000)
#define PTREE_FIND_PPID	kp_eproc.e_ppid
#define PTREE_FIND_PID	kp_proc.p_pid
#define PTREE_FIND_COMM kp_proc.p_comm
#define PTREE_FIND_RUID kp_eproc.e_pcred.p_ruid
#else
#define PTREE_FIND_PPID	ki_ppid
#define PTREE_FIND_PID	ki_pid
#define PTREE_FIND_COMM ki_ocomm
#define PTREE_FIND_RUID ki_ruid
#endif
#endif /* NETBSD */
#endif /* USE_KVM_FROM_PROC || USE_KVM_FROM_PSINFO || USE_KVM_FROM_PSTAT_GETPROC || USE_KVM_FROM_GETPROCS */

#if !defined(_PATH_DEVNULL)
#define _PATH_DEVNULL	"/dev/null"
#endif