11573Srgrimes/*- 21573Srgrimes * Copyright (c) 1989, 1992, 1993 31573Srgrimes * The Regents of the University of California. All rights reserved. 41573Srgrimes * 51573Srgrimes * This code is derived from software developed by the Computer Systems 61573Srgrimes * Engineering group at Lawrence Berkeley Laboratory under DARPA contract 71573Srgrimes * BG 91-66 and contributed to Berkeley. 81573Srgrimes * 91573Srgrimes * Redistribution and use in source and binary forms, with or without 101573Srgrimes * modification, are permitted provided that the following conditions 111573Srgrimes * are met: 121573Srgrimes * 1. Redistributions of source code must retain the above copyright 131573Srgrimes * notice, this list of conditions and the following disclaimer. 141573Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 151573Srgrimes * notice, this list of conditions and the following disclaimer in the 161573Srgrimes * documentation and/or other materials provided with the distribution. 171573Srgrimes * 4. Neither the name of the University nor the names of its contributors 181573Srgrimes * may be used to endorse or promote products derived from this software 191573Srgrimes * without specific prior written permission. 201573Srgrimes * 211573Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 221573Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 231573Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 241573Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 251573Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 261573Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 271573Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 281573Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 291573Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 301573Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 311573Srgrimes * SUCH DAMAGE. 321573Srgrimes */ 331573Srgrimes 34103385Sbde#if 0 351573Srgrimes#if defined(LIBC_SCCS) && !defined(lint) 361573Srgrimesstatic char sccsid[] = "@(#)kvm_proc.c 8.3 (Berkeley) 9/23/93"; 371573Srgrimes#endif /* LIBC_SCCS and not lint */ 38103385Sbde#endif 391573Srgrimes 40103385Sbde#include <sys/cdefs.h> 41103385Sbde__FBSDID("$FreeBSD: stable/11/lib/libkvm/kvm_proc.c 310120 2016-12-15 16:51:33Z vangyzen $"); 42103385Sbde 431573Srgrimes/* 441573Srgrimes * Proc traversal interface for kvm. ps and w are (probably) the exclusive 451573Srgrimes * users of this code, so we've factored it out into a separate module. 461573Srgrimes * Thus, we keep this grunge out of the other kvm applications (i.e., 471573Srgrimes * most other applications are interested only in open/close/read/nlist). 481573Srgrimes */ 491573Srgrimes 501573Srgrimes#include <sys/param.h> 51143871Spjd#define _WANT_UCRED /* make ucred.h give us 'struct ucred' */ 52101968Salfred#include <sys/ucred.h> 53143871Spjd#include <sys/queue.h> 54143871Spjd#include <sys/_lock.h> 55143871Spjd#include <sys/_mutex.h> 56143871Spjd#include <sys/_task.h> 57185435Sbz#include <sys/cpuset.h> 58185435Sbz#include <sys/user.h> 59185435Sbz#include <sys/proc.h> 60143871Spjd#define _WANT_PRISON /* make jail.h give us 'struct prison' */ 61143871Spjd#include <sys/jail.h> 621573Srgrimes#include <sys/exec.h> 631573Srgrimes#include <sys/stat.h> 64130728Sgad#include <sys/sysent.h> 651573Srgrimes#include <sys/ioctl.h> 661573Srgrimes#include <sys/tty.h> 672029Sdg#include <sys/file.h> 68136402Speter#include <sys/conf.h> 69285670Skib#define _WANT_KW_EXITCODE 70285670Skib#include <sys/wait.h> 7117141Sjkh#include <stdio.h> 7217141Sjkh#include <stdlib.h> 731573Srgrimes#include <unistd.h> 741573Srgrimes#include <nlist.h> 751573Srgrimes#include <kvm.h> 761573Srgrimes 771573Srgrimes#include <sys/sysctl.h> 781573Srgrimes 791573Srgrimes#include <limits.h> 8012682Speter#include <memory.h> 811573Srgrimes#include <paths.h> 821573Srgrimes 831573Srgrimes#include "kvm_private.h" 841573Srgrimes 851573Srgrimes#define KREAD(kd, addr, obj) \ 861573Srgrimes (kvm_read(kd, addr, (char *)(obj), sizeof(*obj)) != sizeof(*obj)) 871573Srgrimes 88172265Sjeffstatic int ticks; 89172265Sjeffstatic int hz; 90217745Suqsstatic uint64_t cpu_tick_frequency; 91172265Sjeff 921573Srgrimes/* 93217745Suqs * From sys/kern/kern_tc.c. Depends on cpu_tick_frequency, which is 94217745Suqs * read/initialized before this function is ever called. 95217745Suqs */ 96217745Suqsstatic uint64_t 97217745Suqscputick2usec(uint64_t tick) 98217745Suqs{ 99217745Suqs 100217745Suqs if (cpu_tick_frequency == 0) 101217745Suqs return (0); 102217745Suqs if (tick > 18446744073709551) /* floor(2^64 / 1000) */ 103217745Suqs return (tick / (cpu_tick_frequency / 1000000)); 104217745Suqs else if (tick > 18446744073709) /* floor(2^64 / 1000000) */ 105217745Suqs return ((tick * 1000) / (cpu_tick_frequency / 1000)); 106217745Suqs else 107217745Suqs return ((tick * 1000000) / cpu_tick_frequency); 108217745Suqs} 109217745Suqs 110217745Suqs/* 1111573Srgrimes * Read proc's from memory file into buffer bp, which has space to hold 1121573Srgrimes * at most maxcnt procs. 1131573Srgrimes */ 1141573Srgrimesstatic int 115217744Suqskvm_proclist(kvm_t *kd, int what, int arg, struct proc *p, 116217744Suqs struct kinfo_proc *bp, int maxcnt) 1171573Srgrimes{ 11892913Sobrien int cnt = 0; 11969896Smckusick struct kinfo_proc kinfo_proc, *kp; 1201573Srgrimes struct pgrp pgrp; 1211573Srgrimes struct session sess; 122136402Speter struct cdev t_cdev; 1231573Srgrimes struct tty tty; 12469896Smckusick struct vmspace vmspace; 125114996Sjhb struct sigacts sigacts; 126217744Suqs#if 0 12769896Smckusick struct pstats pstats; 128217744Suqs#endif 12969896Smckusick struct ucred ucred; 130143871Spjd struct prison pr; 131103216Sjulian struct thread mtd; 1321573Srgrimes struct proc proc; 13326947Stegge struct proc pproc; 134130728Sgad struct sysentvec sysent; 135130728Sgad char svname[KI_EMULNAMELEN]; 1361573Srgrimes 13769896Smckusick kp = &kinfo_proc; 13869896Smckusick kp->ki_structsize = sizeof(kinfo_proc); 139173004Sjulian /* 140173004Sjulian * Loop on the processes. this is completely broken because we need to be 141173004Sjulian * able to loop on the threads and merge the ones that are the same process some how. 142173004Sjulian */ 14370525Sben for (; cnt < maxcnt && p != NULL; p = LIST_NEXT(&proc, p_list)) { 14482266Speter memset(kp, 0, sizeof *kp); 1451573Srgrimes if (KREAD(kd, (u_long)p, &proc)) { 146217744Suqs _kvm_err(kd, kd->program, "can't read proc at %p", p); 1471573Srgrimes return (-1); 1481573Srgrimes } 149241302Savg if (proc.p_state == PRS_NEW) 150241302Savg continue; 15199157Sjulian if (proc.p_state != PRS_ZOMBIE) { 15299157Sjulian if (KREAD(kd, (u_long)TAILQ_FIRST(&proc.p_threads), 153103216Sjulian &mtd)) { 15499157Sjulian _kvm_err(kd, kd->program, 155217744Suqs "can't read thread at %p", 15699157Sjulian TAILQ_FIRST(&proc.p_threads)); 15799157Sjulian return (-1); 15899157Sjulian } 15990360Sjulian } 16077183Srwatson if (KREAD(kd, (u_long)proc.p_ucred, &ucred) == 0) { 16177183Srwatson kp->ki_ruid = ucred.cr_ruid; 16277183Srwatson kp->ki_svuid = ucred.cr_svuid; 16377183Srwatson kp->ki_rgid = ucred.cr_rgid; 16477183Srwatson kp->ki_svgid = ucred.cr_svgid; 165195843Sbrooks kp->ki_cr_flags = ucred.cr_flags; 166195843Sbrooks if (ucred.cr_ngroups > KI_NGROUPS) { 167195843Sbrooks kp->ki_ngroups = KI_NGROUPS; 168195843Sbrooks kp->ki_cr_flags |= KI_CRF_GRP_OVERFLOW; 169200366Sbrooks } else 170195843Sbrooks kp->ki_ngroups = ucred.cr_ngroups; 171196990Sbrooks kvm_read(kd, (u_long)ucred.cr_groups, kp->ki_groups, 172195843Sbrooks kp->ki_ngroups * sizeof(gid_t)); 17369896Smckusick kp->ki_uid = ucred.cr_uid; 174143871Spjd if (ucred.cr_prison != NULL) { 175143871Spjd if (KREAD(kd, (u_long)ucred.cr_prison, &pr)) { 176143871Spjd _kvm_err(kd, kd->program, 177217744Suqs "can't read prison at %p", 178143871Spjd ucred.cr_prison); 179143871Spjd return (-1); 180143871Spjd } 181143871Spjd kp->ki_jid = pr.pr_id; 182143871Spjd } 18369896Smckusick } 1841573Srgrimes 185126126Sdeischen switch(what & ~KERN_PROC_INC_THREAD) { 1868870Srgrimes 187130728Sgad case KERN_PROC_GID: 188130728Sgad if (kp->ki_groups[0] != (gid_t)arg) 189130728Sgad continue; 190130728Sgad break; 191130728Sgad 1921573Srgrimes case KERN_PROC_PID: 1931573Srgrimes if (proc.p_pid != (pid_t)arg) 1941573Srgrimes continue; 1951573Srgrimes break; 1961573Srgrimes 197130728Sgad case KERN_PROC_RGID: 198130728Sgad if (kp->ki_rgid != (gid_t)arg) 199130728Sgad continue; 200130728Sgad break; 201130728Sgad 2021573Srgrimes case KERN_PROC_UID: 20369896Smckusick if (kp->ki_uid != (uid_t)arg) 2041573Srgrimes continue; 2051573Srgrimes break; 2061573Srgrimes 2071573Srgrimes case KERN_PROC_RUID: 20869896Smckusick if (kp->ki_ruid != (uid_t)arg) 2091573Srgrimes continue; 2101573Srgrimes break; 2111573Srgrimes } 2121573Srgrimes /* 2131573Srgrimes * We're going to add another proc to the set. If this 2141573Srgrimes * will overflow the buffer, assume the reason is because 2151573Srgrimes * nprocs (or the proc list) is corrupt and declare an error. 2161573Srgrimes */ 2171573Srgrimes if (cnt >= maxcnt) { 2181573Srgrimes _kvm_err(kd, kd->program, "nprocs corrupt"); 2191573Srgrimes return (-1); 2201573Srgrimes } 2211573Srgrimes /* 22269896Smckusick * gather kinfo_proc 2231573Srgrimes */ 22469896Smckusick kp->ki_paddr = p; 225137907Sdas kp->ki_addr = 0; /* XXX uarea */ 22683366Sjulian /* kp->ki_kstack = proc.p_thread.td_kstack; XXXKSE */ 22769896Smckusick kp->ki_args = proc.p_args; 228112204Sjhb kp->ki_tracep = proc.p_tracevp; 22969896Smckusick kp->ki_textvp = proc.p_textvp; 23069896Smckusick kp->ki_fd = proc.p_fd; 23169896Smckusick kp->ki_vmspace = proc.p_vmspace; 232114996Sjhb if (proc.p_sigacts != NULL) { 233114996Sjhb if (KREAD(kd, (u_long)proc.p_sigacts, &sigacts)) { 23469896Smckusick _kvm_err(kd, kd->program, 235217744Suqs "can't read sigacts at %p", proc.p_sigacts); 23669896Smckusick return (-1); 23769896Smckusick } 238114996Sjhb kp->ki_sigignore = sigacts.ps_sigignore; 239114996Sjhb kp->ki_sigcatch = sigacts.ps_sigcatch; 24069896Smckusick } 241170178Sjeff#if 0 242172207Sjeff if ((proc.p_flag & P_INMEM) && proc.p_stats != NULL) { 24369896Smckusick if (KREAD(kd, (u_long)proc.p_stats, &pstats)) { 24469896Smckusick _kvm_err(kd, kd->program, 24569896Smckusick "can't read stats at %x", proc.p_stats); 24669896Smckusick return (-1); 24769896Smckusick } 24869896Smckusick kp->ki_start = pstats.p_start; 249136195Sjhb 250136195Sjhb /* 251136195Sjhb * XXX: The times here are probably zero and need 252136195Sjhb * to be calculated from the raw data in p_rux and 253136195Sjhb * p_crux. 254136195Sjhb */ 25569896Smckusick kp->ki_rusage = pstats.p_ru; 256130728Sgad kp->ki_childstime = pstats.p_cru.ru_stime; 257130728Sgad kp->ki_childutime = pstats.p_cru.ru_utime; 258130728Sgad /* Some callers want child-times in a single value */ 259130728Sgad timeradd(&kp->ki_childstime, &kp->ki_childutime, 260130728Sgad &kp->ki_childtime); 26169896Smckusick } 262170178Sjeff#endif 26326947Stegge if (proc.p_oppid) 26469896Smckusick kp->ki_ppid = proc.p_oppid; 26526947Stegge else if (proc.p_pptr) { 26669896Smckusick if (KREAD(kd, (u_long)proc.p_pptr, &pproc)) { 26769896Smckusick _kvm_err(kd, kd->program, 268217744Suqs "can't read pproc at %p", proc.p_pptr); 26969896Smckusick return (-1); 27069896Smckusick } 27169896Smckusick kp->ki_ppid = pproc.p_pid; 272291372Sjhb } else 27369896Smckusick kp->ki_ppid = 0; 27482266Speter if (proc.p_pgrp == NULL) 27582266Speter goto nopgrp; 27682266Speter if (KREAD(kd, (u_long)proc.p_pgrp, &pgrp)) { 277217744Suqs _kvm_err(kd, kd->program, "can't read pgrp at %p", 27882266Speter proc.p_pgrp); 27982266Speter return (-1); 28082266Speter } 28169896Smckusick kp->ki_pgid = pgrp.pg_id; 28269896Smckusick kp->ki_jobc = pgrp.pg_jobc; 2831573Srgrimes if (KREAD(kd, (u_long)pgrp.pg_session, &sess)) { 284217744Suqs _kvm_err(kd, kd->program, "can't read session at %p", 2851573Srgrimes pgrp.pg_session); 2861573Srgrimes return (-1); 2871573Srgrimes } 28869896Smckusick kp->ki_sid = sess.s_sid; 28969896Smckusick (void)memcpy(kp->ki_login, sess.s_login, 29069896Smckusick sizeof(kp->ki_login)); 29169896Smckusick kp->ki_kiflag = sess.s_ttyvp ? KI_CTTY : 0; 29269896Smckusick if (sess.s_leader == p) 29369896Smckusick kp->ki_kiflag |= KI_SLEADER; 2941573Srgrimes if ((proc.p_flag & P_CONTROLT) && sess.s_ttyp != NULL) { 2951573Srgrimes if (KREAD(kd, (u_long)sess.s_ttyp, &tty)) { 2961573Srgrimes _kvm_err(kd, kd->program, 297217744Suqs "can't read tty at %p", sess.s_ttyp); 2981573Srgrimes return (-1); 2991573Srgrimes } 300136402Speter if (tty.t_dev != NULL) { 301136402Speter if (KREAD(kd, (u_long)tty.t_dev, &t_cdev)) { 302136402Speter _kvm_err(kd, kd->program, 303217744Suqs "can't read cdev at %p", 304136402Speter tty.t_dev); 305136402Speter return (-1); 306136402Speter } 307143648Sphk#if 0 308136402Speter kp->ki_tdev = t_cdev.si_udev; 309143648Sphk#else 310147567Speter kp->ki_tdev = NODEV; 311143648Sphk#endif 312136402Speter } 3131573Srgrimes if (tty.t_pgrp != NULL) { 3141573Srgrimes if (KREAD(kd, (u_long)tty.t_pgrp, &pgrp)) { 3151573Srgrimes _kvm_err(kd, kd->program, 316217744Suqs "can't read tpgrp at %p", 3171573Srgrimes tty.t_pgrp); 3181573Srgrimes return (-1); 3191573Srgrimes } 32069896Smckusick kp->ki_tpgid = pgrp.pg_id; 3211573Srgrimes } else 32269896Smckusick kp->ki_tpgid = -1; 32369896Smckusick if (tty.t_session != NULL) { 32469896Smckusick if (KREAD(kd, (u_long)tty.t_session, &sess)) { 32569896Smckusick _kvm_err(kd, kd->program, 326217744Suqs "can't read session at %p", 32769896Smckusick tty.t_session); 32869896Smckusick return (-1); 32969896Smckusick } 33069896Smckusick kp->ki_tsid = sess.s_sid; 33169896Smckusick } 33282266Speter } else { 33382266Speternopgrp: 33469896Smckusick kp->ki_tdev = NODEV; 33582266Speter } 336103216Sjulian if ((proc.p_state != PRS_ZOMBIE) && mtd.td_wmesg) 337103216Sjulian (void)kvm_read(kd, (u_long)mtd.td_wmesg, 33869896Smckusick kp->ki_wmesg, WMESGLEN); 3391573Srgrimes 3401573Srgrimes (void)kvm_read(kd, (u_long)proc.p_vmspace, 34169896Smckusick (char *)&vmspace, sizeof(vmspace)); 34269896Smckusick kp->ki_size = vmspace.vm_map.size; 343209276Ssbruno /* 344209276Ssbruno * Approximate the kernel's method of calculating 345209276Ssbruno * this field. 346209276Ssbruno */ 347209276Ssbruno#define pmap_resident_count(pm) ((pm)->pm_stats.resident_count) 348291372Sjhb kp->ki_rssize = pmap_resident_count(&vmspace.vm_pmap); 34969896Smckusick kp->ki_swrss = vmspace.vm_swrss; 35069896Smckusick kp->ki_tsize = vmspace.vm_tsize; 35169896Smckusick kp->ki_dsize = vmspace.vm_dsize; 35269896Smckusick kp->ki_ssize = vmspace.vm_ssize; 3531573Srgrimes 354126126Sdeischen switch (what & ~KERN_PROC_INC_THREAD) { 3551573Srgrimes 3561573Srgrimes case KERN_PROC_PGRP: 35769896Smckusick if (kp->ki_pgid != (pid_t)arg) 3581573Srgrimes continue; 3591573Srgrimes break; 3601573Srgrimes 361130728Sgad case KERN_PROC_SESSION: 362130728Sgad if (kp->ki_sid != (pid_t)arg) 363130728Sgad continue; 364130728Sgad break; 365130728Sgad 3661573Srgrimes case KERN_PROC_TTY: 3678870Srgrimes if ((proc.p_flag & P_CONTROLT) == 0 || 36869896Smckusick kp->ki_tdev != (dev_t)arg) 3691573Srgrimes continue; 3701573Srgrimes break; 3711573Srgrimes } 372130992Sgad if (proc.p_comm[0] != 0) 373130992Sgad strlcpy(kp->ki_comm, proc.p_comm, MAXCOMLEN); 374130728Sgad (void)kvm_read(kd, (u_long)proc.p_sysent, (char *)&sysent, 375130728Sgad sizeof(sysent)); 376130728Sgad (void)kvm_read(kd, (u_long)sysent.sv_name, (char *)&svname, 377130728Sgad sizeof(svname)); 378130728Sgad if (svname[0] != 0) 379130728Sgad strlcpy(kp->ki_emul, svname, KI_EMULNAMELEN); 38099142Sjulian if ((proc.p_state != PRS_ZOMBIE) && 381103216Sjulian (mtd.td_blocked != 0)) { 382104388Sjhb kp->ki_kiflag |= KI_LOCKBLOCK; 383104388Sjhb if (mtd.td_lockname) 38499142Sjulian (void)kvm_read(kd, 385104388Sjhb (u_long)mtd.td_lockname, 386104388Sjhb kp->ki_lockname, LOCKNAMELEN); 387104388Sjhb kp->ki_lockname[LOCKNAMELEN] = 0; 38869896Smckusick } 389217745Suqs kp->ki_runtime = cputick2usec(proc.p_rux.rux_runtime); 39069896Smckusick kp->ki_pid = proc.p_pid; 391104307Sjmallett kp->ki_siglist = proc.p_siglist; 392112923Sjeff SIGSETOR(kp->ki_siglist, mtd.td_siglist); 393112891Sjeff kp->ki_sigmask = mtd.td_sigmask; 394285670Skib kp->ki_xstat = KW_EXITCODE(proc.p_xexit, proc.p_xsig); 39569896Smckusick kp->ki_acflag = proc.p_acflag; 396103367Sjulian kp->ki_lock = proc.p_lock; 39799142Sjulian if (proc.p_state != PRS_ZOMBIE) { 398172265Sjeff kp->ki_swtime = (ticks - proc.p_swtick) / hz; 39999128Sjulian kp->ki_flag = proc.p_flag; 400172207Sjeff kp->ki_sflag = 0; 401130552Sjulian kp->ki_nice = proc.p_nice; 40299128Sjulian kp->ki_traceflag = proc.p_traceflag; 403291372Sjhb if (proc.p_state == PRS_NORMAL) { 404103216Sjulian if (TD_ON_RUNQ(&mtd) || 405103216Sjulian TD_CAN_RUN(&mtd) || 406103216Sjulian TD_IS_RUNNING(&mtd)) { 40799128Sjulian kp->ki_stat = SRUN; 408291372Sjhb } else if (mtd.td_state == 409103367Sjulian TDS_INHIBITED) { 410103216Sjulian if (P_SHOULDSTOP(&proc)) { 411103216Sjulian kp->ki_stat = SSTOP; 412103367Sjulian } else if ( 413103367Sjulian TD_IS_SLEEPING(&mtd)) { 414103216Sjulian kp->ki_stat = SSLEEP; 415104388Sjhb } else if (TD_ON_LOCK(&mtd)) { 416104388Sjhb kp->ki_stat = SLOCK; 417103216Sjulian } else { 418103216Sjulian kp->ki_stat = SWAIT; 419103216Sjulian } 42099128Sjulian } 42199072Sjulian } else { 42299128Sjulian kp->ki_stat = SIDL; 42399072Sjulian } 424103367Sjulian /* Stuff from the thread */ 425103216Sjulian kp->ki_pri.pri_level = mtd.td_priority; 426103216Sjulian kp->ki_pri.pri_native = mtd.td_base_pri; 427103216Sjulian kp->ki_lastcpu = mtd.td_lastcpu; 428103367Sjulian kp->ki_wchan = mtd.td_wchan; 429113340Sjulian kp->ki_oncpu = mtd.td_oncpu; 430173004Sjulian if (mtd.td_name[0] != '\0') 431224199Sbz strlcpy(kp->ki_tdname, mtd.td_name, sizeof(kp->ki_tdname)); 432177089Sjeff kp->ki_pctcpu = 0; 433177089Sjeff kp->ki_rqindex = 0; 434273266Sadrian 435273266Sadrian /* 436273266Sadrian * Note: legacy fields; wraps at NO_CPU_OLD or the 437273266Sadrian * old max CPU value as appropriate 438273266Sadrian */ 439273266Sadrian if (mtd.td_lastcpu == NOCPU) 440273266Sadrian kp->ki_lastcpu_old = NOCPU_OLD; 441273266Sadrian else if (mtd.td_lastcpu > MAXCPU_OLD) 442273266Sadrian kp->ki_lastcpu_old = MAXCPU_OLD; 443273266Sadrian else 444273266Sadrian kp->ki_lastcpu_old = mtd.td_lastcpu; 445273266Sadrian 446273266Sadrian if (mtd.td_oncpu == NOCPU) 447273266Sadrian kp->ki_oncpu_old = NOCPU_OLD; 448273266Sadrian else if (mtd.td_oncpu > MAXCPU_OLD) 449273266Sadrian kp->ki_oncpu_old = MAXCPU_OLD; 450273266Sadrian else 451273266Sadrian kp->ki_oncpu_old = mtd.td_oncpu; 45299128Sjulian } else { 45399072Sjulian kp->ki_stat = SZOMB; 45499072Sjulian } 45569896Smckusick bcopy(&kinfo_proc, bp, sizeof(kinfo_proc)); 4561573Srgrimes ++bp; 4571573Srgrimes ++cnt; 4581573Srgrimes } 4591573Srgrimes return (cnt); 4601573Srgrimes} 4611573Srgrimes 4621573Srgrimes/* 4631573Srgrimes * Build proc info array by reading in proc list from a crash dump. 4641573Srgrimes * Return number of procs read. maxcnt is the max we will read. 4651573Srgrimes */ 4661573Srgrimesstatic int 467217744Suqskvm_deadprocs(kvm_t *kd, int what, int arg, u_long a_allproc, 468217744Suqs u_long a_zombproc, int maxcnt) 4691573Srgrimes{ 47092913Sobrien struct kinfo_proc *bp = kd->procbase; 47192913Sobrien int acnt, zcnt; 4721573Srgrimes struct proc *p; 4731573Srgrimes 4741573Srgrimes if (KREAD(kd, a_allproc, &p)) { 4751573Srgrimes _kvm_err(kd, kd->program, "cannot read allproc"); 4761573Srgrimes return (-1); 4771573Srgrimes } 4781573Srgrimes acnt = kvm_proclist(kd, what, arg, p, bp, maxcnt); 4791573Srgrimes if (acnt < 0) 4801573Srgrimes return (acnt); 4811573Srgrimes 4821573Srgrimes if (KREAD(kd, a_zombproc, &p)) { 4831573Srgrimes _kvm_err(kd, kd->program, "cannot read zombproc"); 4841573Srgrimes return (-1); 4851573Srgrimes } 4861573Srgrimes zcnt = kvm_proclist(kd, what, arg, p, bp + acnt, maxcnt - acnt); 4871573Srgrimes if (zcnt < 0) 4881573Srgrimes zcnt = 0; 4891573Srgrimes 4901573Srgrimes return (acnt + zcnt); 4911573Srgrimes} 4921573Srgrimes 4931573Srgrimesstruct kinfo_proc * 494217744Suqskvm_getprocs(kvm_t *kd, int op, int arg, int *cnt) 4951573Srgrimes{ 49638534Sdfr int mib[4], st, nprocs; 497230873Strociny size_t size, osize; 498126126Sdeischen int temp_op; 4991573Srgrimes 5001573Srgrimes if (kd->procbase != 0) { 5011573Srgrimes free((void *)kd->procbase); 5028870Srgrimes /* 5031573Srgrimes * Clear this pointer in case this call fails. Otherwise, 5041573Srgrimes * kvm_close() will free it again. 5051573Srgrimes */ 5061573Srgrimes kd->procbase = 0; 5071573Srgrimes } 5081573Srgrimes if (ISALIVE(kd)) { 5091573Srgrimes size = 0; 5101573Srgrimes mib[0] = CTL_KERN; 5111573Srgrimes mib[1] = KERN_PROC; 5121573Srgrimes mib[2] = op; 5131573Srgrimes mib[3] = arg; 514126126Sdeischen temp_op = op & ~KERN_PROC_INC_THREAD; 515126126Sdeischen st = sysctl(mib, 516126126Sdeischen temp_op == KERN_PROC_ALL || temp_op == KERN_PROC_PROC ? 517120500Stjr 3 : 4, NULL, &size, NULL, 0); 5181573Srgrimes if (st == -1) { 5191573Srgrimes _kvm_syserr(kd, kd->program, "kvm_getprocs"); 5201573Srgrimes return (0); 5211573Srgrimes } 52294028Sdd /* 52394028Sdd * We can't continue with a size of 0 because we pass 52494028Sdd * it to realloc() (via _kvm_realloc()), and passing 0 52594028Sdd * to realloc() results in undefined behavior. 52694028Sdd */ 52794028Sdd if (size == 0) { 52894028Sdd /* 52994028Sdd * XXX: We should probably return an invalid, 53094028Sdd * but non-NULL, pointer here so any client 53194028Sdd * program trying to dereference it will 53294028Sdd * crash. However, _kvm_freeprocs() calls 53394028Sdd * free() on kd->procbase if it isn't NULL, 53494028Sdd * and free()'ing a junk pointer isn't good. 53594028Sdd * Then again, _kvm_freeprocs() isn't used 53694028Sdd * anywhere . . . 53794028Sdd */ 53894028Sdd kd->procbase = _kvm_malloc(kd, 1); 53994028Sdd goto liveout; 54094028Sdd } 54140268Sdes do { 54240268Sdes size += size / 10; 54340268Sdes kd->procbase = (struct kinfo_proc *) 54441880Sbde _kvm_realloc(kd, kd->procbase, size); 545298485Sngie if (kd->procbase == NULL) 54640268Sdes return (0); 547230873Strociny osize = size; 548126126Sdeischen st = sysctl(mib, temp_op == KERN_PROC_ALL || 549126126Sdeischen temp_op == KERN_PROC_PROC ? 3 : 4, 55041880Sbde kd->procbase, &size, NULL, 0); 551230873Strociny } while (st == -1 && errno == ENOMEM && size == osize); 5521573Srgrimes if (st == -1) { 5531573Srgrimes _kvm_syserr(kd, kd->program, "kvm_getprocs"); 5541573Srgrimes return (0); 5551573Srgrimes } 55694028Sdd /* 55794028Sdd * We have to check the size again because sysctl() 55894028Sdd * may "round up" oldlenp if oldp is NULL; hence it 55994028Sdd * might've told us that there was data to get when 56094028Sdd * there really isn't any. 56194028Sdd */ 56276182Sdwmalone if (size > 0 && 56376182Sdwmalone kd->procbase->ki_structsize != sizeof(struct kinfo_proc)) { 5641573Srgrimes _kvm_err(kd, kd->program, 565217744Suqs "kinfo_proc size mismatch (expected %zu, got %d)", 56669896Smckusick sizeof(struct kinfo_proc), 56769896Smckusick kd->procbase->ki_structsize); 5681573Srgrimes return (0); 5691573Srgrimes } 57094028Sddliveout: 57176243Sdwmalone nprocs = size == 0 ? 0 : size / kd->procbase->ki_structsize; 5721573Srgrimes } else { 573217745Suqs struct nlist nl[7], *p; 5741573Srgrimes 5751573Srgrimes nl[0].n_name = "_nprocs"; 5761573Srgrimes nl[1].n_name = "_allproc"; 5771573Srgrimes nl[2].n_name = "_zombproc"; 578172265Sjeff nl[3].n_name = "_ticks"; 579172265Sjeff nl[4].n_name = "_hz"; 580217745Suqs nl[5].n_name = "_cpu_tick_frequency"; 581217745Suqs nl[6].n_name = 0; 5821573Srgrimes 583291406Sjhb if (!kd->arch->ka_native(kd)) { 584291406Sjhb _kvm_err(kd, kd->program, 585291406Sjhb "cannot read procs from non-native core"); 586291406Sjhb return (0); 587291406Sjhb } 588291406Sjhb 5891573Srgrimes if (kvm_nlist(kd, nl) != 0) { 5901573Srgrimes for (p = nl; p->n_type != 0; ++p) 5911573Srgrimes ; 5921573Srgrimes _kvm_err(kd, kd->program, 5931573Srgrimes "%s: no such symbol", p->n_name); 5941573Srgrimes return (0); 5951573Srgrimes } 5961573Srgrimes if (KREAD(kd, nl[0].n_value, &nprocs)) { 5971573Srgrimes _kvm_err(kd, kd->program, "can't read nprocs"); 5981573Srgrimes return (0); 5991573Srgrimes } 600172265Sjeff if (KREAD(kd, nl[3].n_value, &ticks)) { 601172265Sjeff _kvm_err(kd, kd->program, "can't read ticks"); 602172265Sjeff return (0); 603172265Sjeff } 604172265Sjeff if (KREAD(kd, nl[4].n_value, &hz)) { 605172265Sjeff _kvm_err(kd, kd->program, "can't read hz"); 606172265Sjeff return (0); 607172265Sjeff } 608217745Suqs if (KREAD(kd, nl[5].n_value, &cpu_tick_frequency)) { 609217745Suqs _kvm_err(kd, kd->program, 610217745Suqs "can't read cpu_tick_frequency"); 611217745Suqs return (0); 612217745Suqs } 6131573Srgrimes size = nprocs * sizeof(struct kinfo_proc); 6141573Srgrimes kd->procbase = (struct kinfo_proc *)_kvm_malloc(kd, size); 615298485Sngie if (kd->procbase == NULL) 6161573Srgrimes return (0); 6171573Srgrimes 6181573Srgrimes nprocs = kvm_deadprocs(kd, op, arg, nl[1].n_value, 6191573Srgrimes nl[2].n_value, nprocs); 620241303Savg if (nprocs <= 0) { 621241303Savg _kvm_freeprocs(kd); 622241303Savg nprocs = 0; 623241303Savg } 6241573Srgrimes#ifdef notdef 625241303Savg else { 626241303Savg size = nprocs * sizeof(struct kinfo_proc); 627241303Savg kd->procbase = realloc(kd->procbase, size); 628241303Savg } 6291573Srgrimes#endif 6301573Srgrimes } 6311573Srgrimes *cnt = nprocs; 6321573Srgrimes return (kd->procbase); 6331573Srgrimes} 6341573Srgrimes 6351573Srgrimesvoid 636217744Suqs_kvm_freeprocs(kvm_t *kd) 6371573Srgrimes{ 638298485Sngie 639298485Sngie free(kd->procbase); 640298485Sngie kd->procbase = NULL; 6411573Srgrimes} 6421573Srgrimes 6431573Srgrimesvoid * 644217744Suqs_kvm_realloc(kvm_t *kd, void *p, size_t n) 6451573Srgrimes{ 646298485Sngie void *np; 6471573Srgrimes 648298485Sngie np = reallocf(p, n); 649298485Sngie if (np == NULL) 6501573Srgrimes _kvm_err(kd, kd->program, "out of memory"); 6511573Srgrimes return (np); 6521573Srgrimes} 6531573Srgrimes 6541573Srgrimes/* 655227839Strociny * Get the command args or environment. 6561573Srgrimes */ 6571573Srgrimesstatic char ** 658227839Strocinykvm_argv(kvm_t *kd, const struct kinfo_proc *kp, int env, int nchr) 6591573Srgrimes{ 66053239Sphk int oid[4]; 66158642Sobrien int i; 66258642Sobrien size_t bufsz; 663227839Strociny static int buflen; 66453239Sphk static char *buf, *p; 66553239Sphk static char **bufp; 66653239Sphk static int argc; 667298839Sngie char **nbufp; 66853239Sphk 66955127Speter if (!ISALIVE(kd)) { 67055127Speter _kvm_err(kd, kd->program, 67155127Speter "cannot read user space from dead kernel"); 672298485Sngie return (NULL); 67355127Speter } 67455127Speter 675227839Strociny if (nchr == 0 || nchr > ARG_MAX) 676227839Strociny nchr = ARG_MAX; 677227839Strociny if (buflen == 0) { 678227839Strociny buf = malloc(nchr); 679227839Strociny if (buf == NULL) { 680227839Strociny _kvm_err(kd, kd->program, "cannot allocate memory"); 681298485Sngie return (NULL); 68253239Sphk } 683227839Strociny argc = 32; 684227839Strociny bufp = malloc(sizeof(char *) * argc); 685298839Sngie if (bufp == NULL) { 686298839Sngie free(buf); 687298839Sngie buf = NULL; 688298839Sngie _kvm_err(kd, kd->program, "cannot allocate memory"); 689298839Sngie return (NULL); 690298839Sngie } 691298839Sngie buflen = nchr; 692227839Strociny } else if (nchr > buflen) { 693227839Strociny p = realloc(buf, nchr); 694227839Strociny if (p != NULL) { 695227839Strociny buf = p; 696227839Strociny buflen = nchr; 697227839Strociny } 69853239Sphk } 699230146Strociny oid[0] = CTL_KERN; 700230146Strociny oid[1] = KERN_PROC; 701230146Strociny oid[2] = env ? KERN_PROC_ENV : KERN_PROC_ARGS; 702230146Strociny oid[3] = kp->ki_pid; 703230146Strociny bufsz = buflen; 704230146Strociny if (sysctl(oid, 4, buf, &bufsz, 0, 0) == -1) { 705230146Strociny /* 706230146Strociny * If the supplied buf is too short to hold the requested 707230146Strociny * value the sysctl returns with ENOMEM. The buf is filled 708230146Strociny * with the truncated value and the returned bufsz is equal 709230146Strociny * to the requested len. 710230146Strociny */ 711230146Strociny if (errno != ENOMEM || bufsz != (size_t)buflen) 712298485Sngie return (NULL); 713230146Strociny buf[bufsz - 1] = '\0'; 714230146Strociny errno = 0; 715298485Sngie } else if (bufsz == 0) 716298485Sngie return (NULL); 717230146Strociny i = 0; 718230146Strociny p = buf; 719230146Strociny do { 720230146Strociny bufp[i++] = p; 721230146Strociny p += strlen(p) + 1; 722230146Strociny if (i >= argc) { 723230146Strociny argc += argc; 724298839Sngie nbufp = realloc(bufp, sizeof(char *) * argc); 725298839Sngie if (nbufp == NULL) 726298839Sngie return (NULL); 727298839Sngie bufp = nbufp; 72853239Sphk } 729230146Strociny } while (p < buf + bufsz); 730230146Strociny bufp[i++] = 0; 731230146Strociny return (bufp); 7321573Srgrimes} 7331573Srgrimes 7341573Srgrimeschar ** 735227839Strocinykvm_getargv(kvm_t *kd, const struct kinfo_proc *kp, int nchr) 7361573Srgrimes{ 737227839Strociny return (kvm_argv(kd, kp, 0, nchr)); 7381573Srgrimes} 7391573Srgrimes 740227839Strocinychar ** 741227839Strocinykvm_getenvv(kvm_t *kd, const struct kinfo_proc *kp, int nchr) 7421573Srgrimes{ 743227839Strociny return (kvm_argv(kd, kp, 1, nchr)); 7441573Srgrimes} 745