881 lines
20 KiB
C
881 lines
20 KiB
C
/*
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* top - a top users display for Unix
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*
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* SYNOPSIS: For FreeBSD-2.x and later
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*
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* DESCRIPTION:
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* Originally written for BSD4.4 system by Christos Zoulas.
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* Ported to FreeBSD 2.x by Steven Wallace && Wolfram Schneider
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* Order support hacked in from top-3.5beta6/machine/m_aix41.c
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* by Monte Mitzelfelt (for latest top see http://www.groupsys.com/topinfo/)
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*
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* This is the machine-dependent module for FreeBSD 2.2
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* Works for:
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* FreeBSD 2.2.x, 3.x, 4.x, and probably FreeBSD 2.1.x
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*
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* LIBS: -lkvm
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*
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* AUTHOR: Christos Zoulas <christos@ee.cornell.edu>
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* Steven Wallace <swallace@freebsd.org>
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* Wolfram Schneider <wosch@FreeBSD.org>
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* Thomas Moestl <tmoestl@gmx.net>
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*
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* $FreeBSD$
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*/
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#include <sys/time.h>
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#include <sys/types.h>
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#include <sys/signal.h>
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#include <sys/param.h>
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#include <sys/lock.h>
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#include "os.h"
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#include <stdio.h>
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#include <nlist.h>
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#include <math.h>
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#include <kvm.h>
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#include <pwd.h>
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#include <sys/errno.h>
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#include <sys/sysctl.h>
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#include <sys/dkstat.h>
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#include <sys/file.h>
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#include <sys/time.h>
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#include <sys/proc.h>
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#include <sys/user.h>
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#include <sys/vmmeter.h>
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#include <sys/resource.h>
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#include <sys/rtprio.h>
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/* Swap */
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#include <stdlib.h>
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#include <sys/conf.h>
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#include <unistd.h>
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#include <osreldate.h> /* for changes in kernel structures */
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#include "top.h"
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#include "machine.h"
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#include "screen.h"
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#include "utils.h"
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static void getsysctl __P((char *, void *, size_t));
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#define GETSYSCTL(name, var) getsysctl(name, &(var), sizeof(var))
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extern char* printable __P((char *));
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int swapmode __P((int *retavail, int *retfree));
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static int smpmode;
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static int namelength;
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static int cmdlengthdelta;
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/* Prototypes for top internals */
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void quit __P((int));
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/* get_process_info passes back a handle. This is what it looks like: */
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struct handle
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{
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struct kinfo_proc **next_proc; /* points to next valid proc pointer */
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int remaining; /* number of pointers remaining */
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};
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/* declarations for load_avg */
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#include "loadavg.h"
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/* define what weighted cpu is. */
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#define weighted_cpu(pct, pp) ((pp)->ki_swtime == 0 ? 0.0 : \
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((pct) / (1.0 - exp((pp)->ki_swtime * logcpu))))
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/* what we consider to be process size: */
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#define PROCSIZE(pp) ((pp)->ki_size / 1024)
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/* definitions for indices in the nlist array */
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/*
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* These definitions control the format of the per-process area
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*/
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static char smp_header[] =
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" PID %-*.*s PRI NICE SIZE RES STATE C TIME WCPU CPU COMMAND";
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#define smp_Proc_format \
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"%5d %-*.*s %3d %4d%7s %6s %-6.6s %1x%7s %5.2f%% %5.2f%% %.*s"
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static char up_header[] =
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" PID %-*.*s PRI NICE SIZE RES STATE TIME WCPU CPU COMMAND";
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#define up_Proc_format \
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"%5d %-*.*s %3d %4d%7s %6s %-6.6s%.0d%7s %5.2f%% %5.2f%% %.*s"
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/* process state names for the "STATE" column of the display */
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/* the extra nulls in the string "run" are for adding a slash and
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the processor number when needed */
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char *state_abbrev[] =
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{
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"", "START", "RUN\0\0\0", "SLEEP", "STOP", "ZOMB", "WAIT", "MUTEX"
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};
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static kvm_t *kd;
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/* values that we stash away in _init and use in later routines */
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static double logcpu;
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/* these are retrieved from the kernel in _init */
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static load_avg ccpu;
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/* these are used in the get_ functions */
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static int lastpid;
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/* these are for calculating cpu state percentages */
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static long cp_time[CPUSTATES];
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static long cp_old[CPUSTATES];
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static long cp_diff[CPUSTATES];
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/* these are for detailing the process states */
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int process_states[8];
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char *procstatenames[] = {
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"", " starting, ", " running, ", " sleeping, ", " stopped, ",
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" zombie, ", " waiting, ", " mutex, ",
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NULL
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};
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/* these are for detailing the cpu states */
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int cpu_states[CPUSTATES];
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char *cpustatenames[] = {
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"user", "nice", "system", "interrupt", "idle", NULL
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};
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/* these are for detailing the memory statistics */
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int memory_stats[7];
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char *memorynames[] = {
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"K Active, ", "K Inact, ", "K Wired, ", "K Cache, ", "K Buf, ", "K Free",
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NULL
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};
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int swap_stats[7];
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char *swapnames[] = {
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/* 0 1 2 3 4 5 */
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"K Total, ", "K Used, ", "K Free, ", "% Inuse, ", "K In, ", "K Out",
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NULL
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};
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/* these are for keeping track of the proc array */
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static int nproc;
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static int onproc = -1;
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static int pref_len;
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static struct kinfo_proc *pbase;
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static struct kinfo_proc **pref;
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/* these are for getting the memory statistics */
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static int pageshift; /* log base 2 of the pagesize */
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/* define pagetok in terms of pageshift */
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#define pagetok(size) ((size) << pageshift)
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/* useful externals */
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long percentages();
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#ifdef ORDER
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/* sorting orders. first is default */
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char *ordernames[] = {
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"cpu", "size", "res", "time", "pri", NULL
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};
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#endif
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int
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machine_init(statics)
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struct statics *statics;
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{
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register int pagesize;
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size_t modelen;
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struct passwd *pw;
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modelen = sizeof(smpmode);
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if ((sysctlbyname("machdep.smp_active", &smpmode, &modelen, NULL, 0) < 0 &&
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sysctlbyname("kern.smp.active", &smpmode, &modelen, NULL, 0) < 0) ||
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modelen != sizeof(smpmode))
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smpmode = 0;
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while ((pw = getpwent()) != NULL) {
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if (strlen(pw->pw_name) > namelength)
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namelength = strlen(pw->pw_name);
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}
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if (namelength < 8)
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namelength = 8;
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if (smpmode && namelength > 13)
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namelength = 13;
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else if (namelength > 15)
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namelength = 15;
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if ((kd = kvm_open("/dev/null", "/dev/null", "/dev/null", O_RDONLY, "kvm_open")) == NULL)
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return -1;
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GETSYSCTL("kern.ccpu", ccpu);
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/* this is used in calculating WCPU -- calculate it ahead of time */
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logcpu = log(loaddouble(ccpu));
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pbase = NULL;
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pref = NULL;
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nproc = 0;
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onproc = -1;
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/* get the page size with "getpagesize" and calculate pageshift from it */
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pagesize = getpagesize();
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pageshift = 0;
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while (pagesize > 1)
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{
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pageshift++;
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pagesize >>= 1;
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}
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/* we only need the amount of log(2)1024 for our conversion */
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pageshift -= LOG1024;
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/* fill in the statics information */
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statics->procstate_names = procstatenames;
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statics->cpustate_names = cpustatenames;
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statics->memory_names = memorynames;
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statics->swap_names = swapnames;
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#ifdef ORDER
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statics->order_names = ordernames;
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#endif
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/* all done! */
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return(0);
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}
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char *format_header(uname_field)
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register char *uname_field;
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{
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static char Header[128];
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snprintf(Header, sizeof(Header), smpmode ? smp_header : up_header,
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namelength, namelength, uname_field);
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cmdlengthdelta = strlen(Header) - 7;
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return Header;
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}
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static int swappgsin = -1;
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static int swappgsout = -1;
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extern struct timeval timeout;
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void
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get_system_info(si)
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struct system_info *si;
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{
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long total;
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struct loadavg sysload;
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int mib[2];
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struct timeval boottime;
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size_t bt_size;
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/* get the cp_time array */
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GETSYSCTL("kern.cp_time", cp_time);
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GETSYSCTL("vm.loadavg", sysload);
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GETSYSCTL("kern.lastpid", lastpid);
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/* convert load averages to doubles */
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{
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register int i;
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register double *infoloadp;
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infoloadp = si->load_avg;
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for (i = 0; i < 3; i++)
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{
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#ifdef notyet
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*infoloadp++ = ((double) sysload.ldavg[i]) / sysload.fscale;
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#endif
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*infoloadp++ = loaddouble(sysload.ldavg[i]);
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}
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}
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/* convert cp_time counts to percentages */
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total = percentages(CPUSTATES, cpu_states, cp_time, cp_old, cp_diff);
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/* sum memory & swap statistics */
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{
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static unsigned int swap_delay = 0;
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static int swapavail = 0;
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static int swapfree = 0;
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static int bufspace = 0;
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static int nspgsin, nspgsout;
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GETSYSCTL("vfs.bufspace", bufspace);
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GETSYSCTL("vm.stats.vm.v_active_count", memory_stats[0]);
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GETSYSCTL("vm.stats.vm.v_inactive_count", memory_stats[1]);
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GETSYSCTL("vm.stats.vm.v_wire_count", memory_stats[2]);
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GETSYSCTL("vm.stats.vm.v_cache_count", memory_stats[3]);
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GETSYSCTL("vm.stats.vm.v_free_count", memory_stats[5]);
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GETSYSCTL("vm.stats.vm.v_swappgsin", nspgsin);
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GETSYSCTL("vm.stats.vm.v_swappgsout", nspgsout);
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/* convert memory stats to Kbytes */
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memory_stats[0] = pagetok(memory_stats[0]);
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memory_stats[1] = pagetok(memory_stats[1]);
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memory_stats[2] = pagetok(memory_stats[2]);
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memory_stats[3] = pagetok(memory_stats[3]);
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memory_stats[4] = bufspace / 1024;
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memory_stats[5] = pagetok(memory_stats[5]);
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memory_stats[6] = -1;
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/* first interval */
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if (swappgsin < 0) {
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swap_stats[4] = 0;
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swap_stats[5] = 0;
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}
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/* compute differences between old and new swap statistic */
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else {
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swap_stats[4] = pagetok(((nspgsin - swappgsin)));
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swap_stats[5] = pagetok(((nspgsout - swappgsout)));
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}
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swappgsin = nspgsin;
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swappgsout = nspgsout;
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/* call CPU heavy swapmode() only for changes */
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if (swap_stats[4] > 0 || swap_stats[5] > 0 || swap_delay == 0) {
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swap_stats[3] = swapmode(&swapavail, &swapfree);
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swap_stats[0] = swapavail;
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swap_stats[1] = swapavail - swapfree;
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swap_stats[2] = swapfree;
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}
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swap_delay = 1;
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swap_stats[6] = -1;
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}
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/* set arrays and strings */
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si->cpustates = cpu_states;
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si->memory = memory_stats;
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si->swap = swap_stats;
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if(lastpid > 0) {
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si->last_pid = lastpid;
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} else {
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si->last_pid = -1;
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}
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/*
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* Print how long system has been up.
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* (Found by looking getting "boottime" from the kernel)
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*/
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mib[0] = CTL_KERN;
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mib[1] = KERN_BOOTTIME;
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bt_size = sizeof(boottime);
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if (sysctl(mib, 2, &boottime, &bt_size, NULL, 0) != -1 &&
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boottime.tv_sec != 0) {
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si->boottime = boottime;
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} else {
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si->boottime.tv_sec = -1;
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}
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}
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static struct handle handle;
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caddr_t get_process_info(si, sel, compare)
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struct system_info *si;
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struct process_select *sel;
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int (*compare)();
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{
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register int i;
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register int total_procs;
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register int active_procs;
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register struct kinfo_proc **prefp;
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register struct kinfo_proc *pp;
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/* these are copied out of sel for speed */
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int show_idle;
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int show_self;
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int show_system;
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int show_uid;
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int show_command;
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pbase = kvm_getprocs(kd, KERN_PROC_ALL, 0, &nproc);
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if (nproc > onproc)
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pref = (struct kinfo_proc **) realloc(pref, sizeof(struct kinfo_proc *)
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* (onproc = nproc));
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if (pref == NULL || pbase == NULL) {
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(void) fprintf(stderr, "top: Out of memory.\n");
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quit(23);
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}
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/* get a pointer to the states summary array */
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si->procstates = process_states;
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/* set up flags which define what we are going to select */
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show_idle = sel->idle;
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show_self = sel->self;
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show_system = sel->system;
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show_uid = sel->uid != -1;
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show_command = sel->command != NULL;
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/* count up process states and get pointers to interesting procs */
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total_procs = 0;
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active_procs = 0;
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memset((char *)process_states, 0, sizeof(process_states));
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prefp = pref;
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for (pp = pbase, i = 0; i < nproc; pp++, i++)
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{
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/*
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* Place pointers to each valid proc structure in pref[].
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* Process slots that are actually in use have a non-zero
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* status field. Processes with P_SYSTEM set are system
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* processes---these get ignored unless show_sysprocs is set.
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*/
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if (pp->ki_stat != 0 &&
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(show_self != pp->ki_pid) &&
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(show_system || ((pp->ki_flag & P_SYSTEM) == 0)))
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{
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total_procs++;
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process_states[(unsigned char) pp->ki_stat]++;
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if ((pp->ki_stat != SZOMB) &&
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(show_idle || (pp->ki_pctcpu != 0) ||
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(pp->ki_stat == SRUN)) &&
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(!show_uid || pp->ki_ruid == (uid_t)sel->uid))
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{
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*prefp++ = pp;
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active_procs++;
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}
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}
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}
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/* if requested, sort the "interesting" processes */
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if (compare != NULL)
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{
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qsort((char *)pref, active_procs, sizeof(struct kinfo_proc *), compare);
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}
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/* remember active and total counts */
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si->p_total = total_procs;
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si->p_active = pref_len = active_procs;
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/* pass back a handle */
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handle.next_proc = pref;
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handle.remaining = active_procs;
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return((caddr_t)&handle);
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}
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char fmt[128]; /* static area where result is built */
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char *format_next_process(handle, get_userid)
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caddr_t handle;
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char *(*get_userid)();
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{
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register struct kinfo_proc *pp;
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register long cputime;
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register double pct;
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struct handle *hp;
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char status[16];
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int state;
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/* find and remember the next proc structure */
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hp = (struct handle *)handle;
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pp = *(hp->next_proc++);
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hp->remaining--;
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/* get the process's command name */
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if ((pp->ki_sflag & PS_INMEM) == 0) {
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/*
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* Print swapped processes as <pname>
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*/
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char *comm = pp->ki_comm;
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#define COMSIZ sizeof(pp->ki_comm)
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char buf[COMSIZ];
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(void) strncpy(buf, comm, COMSIZ);
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comm[0] = '<';
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(void) strncpy(&comm[1], buf, COMSIZ - 2);
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comm[COMSIZ - 2] = '\0';
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(void) strncat(comm, ">", COMSIZ - 1);
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comm[COMSIZ - 1] = '\0';
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}
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/*
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* Convert the process's runtime from microseconds to seconds. This
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* time includes the interrupt time although that is not wanted here.
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* ps(1) is similarly sloppy.
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*/
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cputime = (pp->ki_runtime + 500000) / 1000000;
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/* calculate the base for cpu percentages */
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pct = pctdouble(pp->ki_pctcpu);
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/* generate "STATE" field */
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switch (state = pp->ki_stat) {
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case SRUN:
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if (smpmode && pp->ki_oncpu != 0xff)
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sprintf(status, "CPU%d", pp->ki_oncpu);
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else
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strcpy(status, "RUN");
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break;
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case SMTX:
|
|
if (pp->ki_kiflag & KI_MTXBLOCK) {
|
|
sprintf(status, "*%.6s", pp->ki_mtxname);
|
|
break;
|
|
}
|
|
/* fall through */
|
|
case SSLEEP:
|
|
if (pp->ki_wmesg != NULL) {
|
|
sprintf(status, "%.6s", pp->ki_wmesg);
|
|
break;
|
|
}
|
|
/* fall through */
|
|
default:
|
|
|
|
if (state >= 0 &&
|
|
state < sizeof(state_abbrev) / sizeof(*state_abbrev))
|
|
sprintf(status, "%.6s", state_abbrev[(unsigned char) state]);
|
|
else
|
|
sprintf(status, "?%5d", state);
|
|
break;
|
|
}
|
|
|
|
/* format this entry */
|
|
sprintf(fmt,
|
|
smpmode ? smp_Proc_format : up_Proc_format,
|
|
pp->ki_pid,
|
|
namelength, namelength,
|
|
(*get_userid)(pp->ki_ruid),
|
|
pp->ki_pri.pri_level - PZERO,
|
|
|
|
/*
|
|
* normal time -> nice value -20 - +20
|
|
* real time 0 - 31 -> nice value -52 - -21
|
|
* idle time 0 - 31 -> nice value +21 - +52
|
|
*/
|
|
(pp->ki_pri.pri_class == PRI_TIMESHARE ?
|
|
pp->ki_nice - NZERO :
|
|
(PRI_IS_REALTIME(pp->ki_pri.pri_class) ?
|
|
(PRIO_MIN - 1 - (PRI_MAX_REALTIME - pp->ki_pri.pri_level)) :
|
|
(PRIO_MAX + 1 + pp->ki_pri.pri_level - PRI_MIN_IDLE))),
|
|
format_k2(PROCSIZE(pp)),
|
|
format_k2(pagetok(pp->ki_rssize)),
|
|
status,
|
|
smpmode ? pp->ki_lastcpu : 0,
|
|
format_time(cputime),
|
|
100.0 * weighted_cpu(pct, pp),
|
|
100.0 * pct,
|
|
screen_width > cmdlengthdelta ?
|
|
screen_width - cmdlengthdelta :
|
|
0,
|
|
printable(pp->ki_comm));
|
|
|
|
/* return the result */
|
|
return(fmt);
|
|
}
|
|
|
|
static void getsysctl (name, ptr, len)
|
|
|
|
char *name;
|
|
void *ptr;
|
|
size_t len;
|
|
|
|
{
|
|
size_t nlen = len;
|
|
if (sysctlbyname(name, ptr, &nlen, NULL, 0) == -1) {
|
|
fprintf(stderr, "top: sysctl(%s...) failed: %s\n", name,
|
|
strerror(errno));
|
|
quit(23);
|
|
}
|
|
if (nlen != len) {
|
|
fprintf(stderr, "top: sysctl(%s...) expected %d, got %d\n", name,
|
|
len, nlen);
|
|
quit(23);
|
|
}
|
|
}
|
|
|
|
/* comparison routines for qsort */
|
|
|
|
/*
|
|
* proc_compare - comparison function for "qsort"
|
|
* Compares the resource consumption of two processes using five
|
|
* distinct keys. The keys (in descending order of importance) are:
|
|
* percent cpu, cpu ticks, state, resident set size, total virtual
|
|
* memory usage. The process states are ordered as follows (from least
|
|
* to most important): WAIT, zombie, sleep, stop, start, run. The
|
|
* array declaration below maps a process state index into a number
|
|
* that reflects this ordering.
|
|
*/
|
|
|
|
static unsigned char sorted_state[] =
|
|
{
|
|
0, /* not used */
|
|
3, /* sleep */
|
|
1, /* ABANDONED (WAIT) */
|
|
6, /* run */
|
|
5, /* start */
|
|
2, /* zombie */
|
|
4 /* stop */
|
|
};
|
|
|
|
|
|
#define ORDERKEY_PCTCPU \
|
|
if (lresult = (long) p2->ki_pctcpu - (long) p1->ki_pctcpu, \
|
|
(result = lresult > 0 ? 1 : lresult < 0 ? -1 : 0) == 0)
|
|
|
|
#define ORDERKEY_CPTICKS \
|
|
if ((result = p2->ki_runtime > p1->ki_runtime ? 1 : \
|
|
p2->ki_runtime < p1->ki_runtime ? -1 : 0) == 0)
|
|
|
|
#define ORDERKEY_STATE \
|
|
if ((result = sorted_state[(unsigned char) p2->ki_stat] - \
|
|
sorted_state[(unsigned char) p1->ki_stat]) == 0)
|
|
|
|
#define ORDERKEY_PRIO \
|
|
if ((result = p2->ki_pri.pri_level - p1->ki_pri.pri_level) == 0)
|
|
|
|
#define ORDERKEY_RSSIZE \
|
|
if ((result = p2->ki_rssize - p1->ki_rssize) == 0)
|
|
|
|
#define ORDERKEY_MEM \
|
|
if ( (result = PROCSIZE(p2) - PROCSIZE(p1)) == 0 )
|
|
|
|
/* compare_cpu - the comparison function for sorting by cpu percentage */
|
|
|
|
int
|
|
#ifdef ORDER
|
|
compare_cpu(pp1, pp2)
|
|
#else
|
|
proc_compare(pp1, pp2)
|
|
#endif
|
|
|
|
struct proc **pp1;
|
|
struct proc **pp2;
|
|
|
|
{
|
|
register struct kinfo_proc *p1;
|
|
register struct kinfo_proc *p2;
|
|
register int result;
|
|
register pctcpu lresult;
|
|
|
|
/* remove one level of indirection */
|
|
p1 = *(struct kinfo_proc **) pp1;
|
|
p2 = *(struct kinfo_proc **) pp2;
|
|
|
|
ORDERKEY_PCTCPU
|
|
ORDERKEY_CPTICKS
|
|
ORDERKEY_STATE
|
|
ORDERKEY_PRIO
|
|
ORDERKEY_RSSIZE
|
|
ORDERKEY_MEM
|
|
;
|
|
|
|
return(result);
|
|
}
|
|
|
|
#ifdef ORDER
|
|
/* compare routines */
|
|
int compare_size(), compare_res(), compare_time(), compare_prio();
|
|
|
|
int (*proc_compares[])() = {
|
|
compare_cpu,
|
|
compare_size,
|
|
compare_res,
|
|
compare_time,
|
|
compare_prio,
|
|
NULL
|
|
};
|
|
|
|
/* compare_size - the comparison function for sorting by total memory usage */
|
|
|
|
int
|
|
compare_size(pp1, pp2)
|
|
|
|
struct proc **pp1;
|
|
struct proc **pp2;
|
|
|
|
{
|
|
register struct kinfo_proc *p1;
|
|
register struct kinfo_proc *p2;
|
|
register int result;
|
|
register pctcpu lresult;
|
|
|
|
/* remove one level of indirection */
|
|
p1 = *(struct kinfo_proc **) pp1;
|
|
p2 = *(struct kinfo_proc **) pp2;
|
|
|
|
ORDERKEY_MEM
|
|
ORDERKEY_RSSIZE
|
|
ORDERKEY_PCTCPU
|
|
ORDERKEY_CPTICKS
|
|
ORDERKEY_STATE
|
|
ORDERKEY_PRIO
|
|
;
|
|
|
|
return(result);
|
|
}
|
|
|
|
/* compare_res - the comparison function for sorting by resident set size */
|
|
|
|
int
|
|
compare_res(pp1, pp2)
|
|
|
|
struct proc **pp1;
|
|
struct proc **pp2;
|
|
|
|
{
|
|
register struct kinfo_proc *p1;
|
|
register struct kinfo_proc *p2;
|
|
register int result;
|
|
register pctcpu lresult;
|
|
|
|
/* remove one level of indirection */
|
|
p1 = *(struct kinfo_proc **) pp1;
|
|
p2 = *(struct kinfo_proc **) pp2;
|
|
|
|
ORDERKEY_RSSIZE
|
|
ORDERKEY_MEM
|
|
ORDERKEY_PCTCPU
|
|
ORDERKEY_CPTICKS
|
|
ORDERKEY_STATE
|
|
ORDERKEY_PRIO
|
|
;
|
|
|
|
return(result);
|
|
}
|
|
|
|
/* compare_time - the comparison function for sorting by total cpu time */
|
|
|
|
int
|
|
compare_time(pp1, pp2)
|
|
|
|
struct proc **pp1;
|
|
struct proc **pp2;
|
|
|
|
{
|
|
register struct kinfo_proc *p1;
|
|
register struct kinfo_proc *p2;
|
|
register int result;
|
|
register pctcpu lresult;
|
|
|
|
/* remove one level of indirection */
|
|
p1 = *(struct kinfo_proc **) pp1;
|
|
p2 = *(struct kinfo_proc **) pp2;
|
|
|
|
ORDERKEY_CPTICKS
|
|
ORDERKEY_PCTCPU
|
|
ORDERKEY_STATE
|
|
ORDERKEY_PRIO
|
|
ORDERKEY_RSSIZE
|
|
ORDERKEY_MEM
|
|
;
|
|
|
|
return(result);
|
|
}
|
|
|
|
/* compare_prio - the comparison function for sorting by cpu percentage */
|
|
|
|
int
|
|
compare_prio(pp1, pp2)
|
|
|
|
struct proc **pp1;
|
|
struct proc **pp2;
|
|
|
|
{
|
|
register struct kinfo_proc *p1;
|
|
register struct kinfo_proc *p2;
|
|
register int result;
|
|
register pctcpu lresult;
|
|
|
|
/* remove one level of indirection */
|
|
p1 = *(struct kinfo_proc **) pp1;
|
|
p2 = *(struct kinfo_proc **) pp2;
|
|
|
|
ORDERKEY_PRIO
|
|
ORDERKEY_CPTICKS
|
|
ORDERKEY_PCTCPU
|
|
ORDERKEY_STATE
|
|
ORDERKEY_RSSIZE
|
|
ORDERKEY_MEM
|
|
;
|
|
|
|
return(result);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* proc_owner(pid) - returns the uid that owns process "pid", or -1 if
|
|
* the process does not exist.
|
|
* It is EXTREMLY IMPORTANT that this function work correctly.
|
|
* If top runs setuid root (as in SVR4), then this function
|
|
* is the only thing that stands in the way of a serious
|
|
* security problem. It validates requests for the "kill"
|
|
* and "renice" commands.
|
|
*/
|
|
|
|
int proc_owner(pid)
|
|
|
|
int pid;
|
|
|
|
{
|
|
register int cnt;
|
|
register struct kinfo_proc **prefp;
|
|
register struct kinfo_proc *pp;
|
|
|
|
prefp = pref;
|
|
cnt = pref_len;
|
|
while (--cnt >= 0)
|
|
{
|
|
pp = *prefp++;
|
|
if (pp->ki_pid == (pid_t)pid)
|
|
{
|
|
return((int)pp->ki_ruid);
|
|
}
|
|
}
|
|
return(-1);
|
|
}
|
|
|
|
int
|
|
swapmode(retavail, retfree)
|
|
int *retavail;
|
|
int *retfree;
|
|
{
|
|
int n;
|
|
int pagesize = getpagesize();
|
|
struct kvm_swap swapary[1];
|
|
|
|
*retavail = 0;
|
|
*retfree = 0;
|
|
|
|
#define CONVERT(v) ((quad_t)(v) * pagesize / 1024)
|
|
|
|
n = kvm_getswapinfo(kd, swapary, 1, 0);
|
|
if (n < 0 || swapary[0].ksw_total == 0)
|
|
return(0);
|
|
|
|
*retavail = CONVERT(swapary[0].ksw_total);
|
|
*retfree = CONVERT(swapary[0].ksw_total - swapary[0].ksw_used);
|
|
|
|
n = (int)((double)swapary[0].ksw_used * 100.0 /
|
|
(double)swapary[0].ksw_total);
|
|
return(n);
|
|
}
|
|
|