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ps.c revision 1.18 
      1 /*      $NetBSD: ps.c,v 1.18 2000/12/20 01:17:49 cgd Exp $  */
      2 
      3 /*-
      4  * Copyright (c) 1999
      5  *      The NetBSD Foundation, Inc.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *      This product includes software developed by the NetBSD Foundation.
     18  * 4. Neither the name of the Foundation nor the names of its contributors
     19  *    may be used to endorse or promote products derived from this software
     20  *    without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32  * SUCH DAMAGE.
     33  */
     34 
     35 /*
     36  * XXX Notes XXX
     37  * showps -- print data needed at each refresh
     38  * fetchps -- get data used by mode (done at each refresh)
     39  * labelps -- print labels (ie info not needing refreshing)
     40  * initps -- prepare once-only data structures for mode
     41  * openps -- prepare per-run information for mode, return window
     42  * closeps -- close mode to prepare to switch modes
     43  * cmdps -- optional, handle commands
     44  */
     45 
     46 #include <sys/cdefs.h>
     47 #ifndef lint
     48 __RCSID("$NetBSD: ps.c,v 1.18 2000/12/20 01:17:49 cgd Exp $");
     49 #endif /* not lint */
     50 
     51 #include <sys/param.h>
     52 #include <sys/sched.h>
     53 #include <sys/sysctl.h>
     54 #include <sys/user.h>
     55 
     56 #include <curses.h>
     57 #include <math.h>
     58 #include <pwd.h>
     59 #include <stdlib.h>
     60 #include <string.h>
     61 #include <tzfile.h>
     62 #include <unistd.h>
     63 
     64 #include "extern.h"
     65 #include "systat.h"
     66 #include "ps.h"
     67 
     68 int compare_pctcpu_noidle(const void *, const void *);
     69 char *state2str(struct kinfo_proc *);
     70 char *tty2str(struct kinfo_proc *);
     71 int rss2int(struct kinfo_proc *);
     72 int vsz2int(struct kinfo_proc *);
     73 char *comm2str(struct kinfo_proc *);
     74 double pmem2float(struct kinfo_proc *);
     75 char *start2str(struct kinfo_proc *);
     76 char *time2str(struct kinfo_proc *);
     77 
     78 static time_t now;
     79 
     80 #define SHOWUSER_ANY	(uid_t)-1
     81 static uid_t showuser = SHOWUSER_ANY;
     82 
     83 #ifndef P_ZOMBIE
     84 #define P_ZOMBIE(p)	((p)->p_stat == SZOMB)
     85 #endif
     86 
     87 void
     88 labelps(void)
     89 {
     90 	mvwaddstr(wnd, 0, 0, "USER      PID %CPU %MEM    VSZ   RSS TT  STAT STARTED       TIME COMMAND");
     91 }
     92 
     93 void
     94 showps(void)
     95 {
     96 	int i, k, y, vsz, rss;
     97 	const char *user, *comm, *state, *tty, *start, *time;
     98 	pid_t pid;
     99 	double pctcpu, pctmem;
    100 	struct  eproc *ep;
    101 
    102 	now = 0;	/* force start2str to reget current time */
    103 
    104 	qsort(pt, nproc + 1, sizeof (struct p_times), compare_pctcpu_noidle);
    105 
    106 	y = 1;
    107 	i = nproc + 1;
    108 	if (i > getmaxy(wnd)-2)
    109 		i = getmaxy(wnd)-1;
    110 	for (k = 0; i > 0 ; k++) {
    111 		if (pt[k].pt_kp == NULL) /* We're all the way down to the imaginary idle proc */
    112 			break;
    113 
    114 		ep = &pt[k].pt_kp->kp_eproc;
    115 		if (showuser != SHOWUSER_ANY && ep->e_ucred.cr_uid != showuser)
    116 			continue;
    117 		user = user_from_uid(ep->e_ucred.cr_uid, 0);
    118 		pid = pt[k].pt_kp->kp_proc.p_pid;
    119 		pctcpu = 100.0 * pt[k].pt_pctcpu;
    120 		pctmem = pmem2float(pt[k].pt_kp);
    121 		vsz = vsz2int(pt[k].pt_kp);
    122 		rss = rss2int(pt[k].pt_kp);
    123 		tty = tty2str(pt[k].pt_kp);
    124 		state = state2str(pt[k].pt_kp);
    125 		start = start2str(pt[k].pt_kp);
    126 		time = time2str(pt[k].pt_kp);
    127 		comm = comm2str(pt[k].pt_kp);
    128 		/*comm = pt[k].pt_kp->kp_proc.p_comm; */
    129 
    130 		wmove(wnd, y, 0);
    131 		wclrtoeol(wnd);
    132 		mvwprintw(wnd, y++, 0,
    133 		    "%-8.8s%5d %4.1f %4.1f %6d %5d %-3s %-4s %7s %10.10s %s",
    134 		    user, pid, pctcpu, pctmem, vsz, rss, tty, state, start, time, comm);
    135 		i--;
    136 	}
    137 	wmove(wnd, y, 0);
    138 	wclrtobot(wnd);
    139 }
    140 
    141 int
    142 compare_pctcpu_noidle(const void *a, const void *b)
    143 {
    144 	if (((struct p_times *) a)->pt_kp == NULL)
    145 		return 1;
    146 
    147 	if (((struct p_times *) b)->pt_kp == NULL)
    148 	 	return -1;
    149 
    150 	return (((struct p_times *) a)->pt_pctcpu >
    151 		((struct p_times *) b)->pt_pctcpu)? -1: 1;
    152 }
    153 
    154 /* from here down adapted from .../src/usr.bin/ps/print.c .  Any mistakes are my own, however. */
    155 char *
    156 state2str(struct kinfo_proc *kp)
    157 {
    158 	struct proc *p;
    159 	struct eproc *e;
    160 	int flag;
    161 	char *cp;
    162 	char buf[5];
    163 	static char statestr[4];
    164 
    165 	p = &(kp->kp_proc);
    166 	e = &(kp->kp_eproc);
    167 
    168 	flag = p->p_flag;
    169 	cp = buf;
    170 
    171 	switch (p->p_stat) {
    172 	case SSTOP:
    173 		*cp = 'T';
    174 		break;
    175 
    176 	case SSLEEP:
    177 		if (flag & P_SINTR)     /* interuptable (long) */
    178 			*cp = p->p_slptime >= MAXSLP ? 'I' : 'S';
    179 		else
    180 			*cp = 'D';
    181 		break;
    182 
    183 	case SRUN:
    184 	case SIDL:
    185 	case SONPROC:
    186 		*cp = 'R';
    187 		break;
    188 
    189 	case SZOMB:
    190 #ifdef SDEAD
    191 	case SDEAD:
    192 #endif
    193 		*cp = 'Z';
    194 		break;
    195 
    196 	default:
    197 		*cp = '?';
    198 	}
    199 	cp++;
    200 	if (flag & P_INMEM) {
    201 	} else
    202 		*cp++ = 'W';
    203 	if (p->p_nice < NZERO)
    204 		*cp++ = '<';
    205 	else if (p->p_nice > NZERO)
    206 		*cp++ = 'N';
    207 	if (flag & P_TRACED)
    208 		*cp++ = 'X';
    209 	if (flag & P_WEXIT && P_ZOMBIE(p) == 0)
    210 		*cp++ = 'E';
    211 	if (flag & P_PPWAIT)
    212 		*cp++ = 'V';
    213 	if ((flag & P_SYSTEM) || p->p_holdcnt)
    214 		*cp++ = 'L';
    215 	if (e->e_flag & EPROC_SLEADER)
    216 		*cp++ = 's';
    217 	if ((flag & P_CONTROLT) && e->e_pgid == e->e_tpgid)
    218 		*cp++ = '+';
    219 	*cp = '\0';
    220 	snprintf(statestr, sizeof(statestr), "%-s",  buf);
    221 
    222 	return statestr;
    223 }
    224 
    225 char *
    226 tty2str(struct kinfo_proc *kp)
    227 {
    228 	static char ttystr[4];
    229 	char *ttyname;
    230 	struct eproc *e;
    231 
    232 	e = &(kp->kp_eproc);
    233 
    234 	if (e->e_tdev == NODEV || (ttyname = devname(e->e_tdev, S_IFCHR)) == NULL)
    235 		strcpy(ttystr, "??");
    236 	else {
    237 		if (strncmp(ttyname, "tty", 3) == 0 ||
    238 		    strncmp(ttyname, "dty", 3) == 0)
    239 			ttyname += 3;
    240 		snprintf(ttystr, sizeof(ttystr), "%s%c", ttyname, e->e_flag & EPROC_CTTY ? ' ' : '-');
    241 	}
    242 
    243 	return ttystr;
    244 }
    245 
    246 #define pgtok(a)	(((a)*getpagesize())/1024)
    247 
    248 int
    249 vsz2int(struct kinfo_proc *kp)
    250 {
    251 	struct eproc *e;
    252 	int     i;
    253 
    254 	e = &(kp->kp_eproc);
    255 	i = pgtok(e->e_vm.vm_dsize + e->e_vm.vm_ssize + e->e_vm.vm_tsize);
    256 
    257 	return ((i < 0) ? 0 : i);
    258 }
    259 
    260 int
    261 rss2int(struct kinfo_proc *kp)
    262 {
    263 	struct eproc *e;
    264 	int	i;
    265 
    266 	e = &(kp->kp_eproc);
    267 	i = pgtok(e->e_vm.vm_rssize);
    268 
    269 	/* XXX don't have info about shared */
    270 	return ((i < 0) ? 0 : i);
    271 }
    272 
    273 char *
    274 comm2str(struct kinfo_proc *kp)
    275 {
    276 	char **argv, **pt;
    277 	static char commstr[41];
    278 	struct proc *p;
    279 
    280 	p = &(kp->kp_proc);
    281 	commstr[0]='\0';
    282 
    283 	argv = kvm_getargv(kd, kp, 40);
    284 	if ((pt = argv) != NULL) {
    285 		while (*pt) {
    286 			strcat(commstr, *pt);
    287 			pt++;
    288 			strcat(commstr, " ");
    289 		}
    290 	} else {
    291 		commstr[0] = '(';
    292 		commstr[1] = '\0';
    293 		strncat(commstr, p->p_comm, sizeof(commstr) - 1);
    294 		strcat(commstr, ")");
    295 	}
    296 
    297 	return commstr;
    298 }
    299 
    300 double
    301 pmem2float(struct kinfo_proc *kp)
    302 {
    303 	struct proc *p;
    304 	struct eproc *e;
    305 	double fracmem;
    306 	int szptudot;
    307 
    308 	p = &(kp->kp_proc);
    309 	e = &(kp->kp_eproc);
    310 
    311 	if ((p->p_flag & P_INMEM) == 0)
    312 	        return (0.0);
    313 	/* XXX want pmap ptpages, segtab, etc. (per architecture) */
    314 	szptudot = USPACE/getpagesize();
    315 	/* XXX don't have info about shared */
    316 	fracmem = ((double)e->e_vm.vm_rssize + szptudot)/mempages;
    317 	return (fracmem >= 0) ? 100.0 * fracmem : 0;
    318 }
    319 
    320 char *
    321 start2str(struct kinfo_proc *kp)
    322 {
    323 	struct proc *p;
    324 	struct pstats pstats;
    325 	struct timeval u_start;
    326 	struct tm *tp;
    327 	time_t startt;
    328 	static char startstr[10];
    329 
    330 	p = &(kp->kp_proc);
    331 
    332 	kvm_read(kd, (u_long)&(p->p_addr->u_stats), (char *)&pstats, sizeof(pstats));
    333 	u_start = pstats.p_start;
    334 
    335 	startt = u_start.tv_sec;
    336 	tp = localtime(&startt);
    337 	if (now == 0)
    338 	        time(&now);
    339 	if (now - u_start.tv_sec < 24 * SECSPERHOUR) {
    340 		/* I *hate* SCCS... */
    341 	        static char fmt[] = "%l:%" "M%p";
    342 	        strftime(startstr, sizeof(startstr) - 1, fmt, tp);
    343 	} else if (now - u_start.tv_sec < 7 * SECSPERDAY) {
    344 	        /* I *hate* SCCS... */
    345 	        static char fmt[] = "%a%" "I%p";
    346 	        strftime(startstr, sizeof(startstr) - 1, fmt, tp);
    347 	} else
    348 	        strftime(startstr, sizeof(startstr) - 1, "%e%b%y", tp);
    349 
    350 	return startstr;
    351 }
    352 
    353 char *
    354 time2str(struct kinfo_proc *kp)
    355 {
    356 	long secs;
    357 	long psecs;     /* "parts" of a second. first micro, then centi */
    358 	static char timestr[10];
    359 	struct proc *p;
    360 
    361 	p = &(kp->kp_proc);
    362 
    363 	if (P_ZOMBIE(p)) {
    364 	        secs = 0;
    365 	        psecs = 0;
    366 	} else {
    367 	        /*
    368 	         * This counts time spent handling interrupts.  We could
    369 	         * fix this, but it is not 100% trivial (and interrupt
    370 	         * time fractions only work on the sparc anyway).       XXX
    371 	         */
    372 	        secs = p->p_rtime.tv_sec;
    373 	        psecs = p->p_rtime.tv_usec;
    374 	        /* if (sumrusage) {
    375 	                secs += k->ki_u.u_cru.ru_utime.tv_sec +
    376 	                        k->ki_u.u_cru.ru_stime.tv_sec;
    377 	                psecs += k->ki_u.u_cru.ru_utime.tv_usec +
    378 	                        k->ki_u.u_cru.ru_stime.tv_usec;
    379 	        } */
    380 	        /*
    381 	         * round and scale to 100's
    382 	         */
    383 	        psecs = (psecs + 5000) / 10000;
    384 	        secs += psecs / 100;
    385 	        psecs = psecs % 100;
    386 	}
    387 	snprintf(timestr, sizeof(timestr), "%3ld:%02ld.%02ld", secs/60, secs%60, psecs);
    388 
    389 	return timestr;
    390 }
    391 
    392 void
    393 ps_user(char *args)
    394 {
    395 	uid_t uid;
    396 
    397 	if (args == NULL)
    398 		args = "";
    399 	if (strcmp(args, "+") == 0) {
    400 		uid = SHOWUSER_ANY;
    401 	} else if (uid_from_user(args, &uid) != 0) {
    402 		error("%s: unknown user", args);
    403 		return;
    404 	}
    405 
    406 	showuser = uid;
    407 	display(0);
    408 }
    409