sys/kern/kern_kinfo.c

   1 /*-
   2  * Copyright (c) 2007 The DragonFly Project.  All rights reserved.
   3  *
   4  * This code is derived from software contributed to The DragonFly Project
   5  * by Simon 'corecode' Schubert <corecode@fs.ei.tum.de>
   6  * by Thomas E. Spanjaard <tgen@netphreax.net>
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in
  16  *    the documentation and/or other materials provided with the
  17  *    distribution.
  18  * 3. Neither the name of The DragonFly Project nor the names of its
  19  *    contributors may be used to endorse or promote products derived
  20  *    from this software without specific, prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  23  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  24  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  25  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  26  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  27  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  28  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  29  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  30  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  31  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  32  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  *
  35  * $DragonFly: src/sys/kern/kern_kinfo.c,v 1.12 2007/05/24 05:45:45 dillon Exp $
  36  */
  37
  38 /*
  39  * This is a source file used by both the kernel and libkvm.
  40  */
  41
  42 #ifndef _KERNEL
  43 #define _KERNEL_STRUCTURES
  44 #endif
  45
  46 #include <sys/proc.h>
  47 #include <vm/vm_map.h>
  48 #include <sys/kinfo.h>
  49 #include <sys/tty.h>
  50 #include <sys/conf.h>
  51 #include <sys/jail.h>
  52 #include <sys/globaldata.h>
  53 #ifdef _KERNEL
  54 #include <sys/systm.h>
  55 #else
  56 #include <string.h>
  57 #endif
  58
  59
  60 /*
  61  * Fill in a struct kinfo_proc.
  62  */
  63 void
  64 fill_kinfo_proc(struct proc *p, struct kinfo_proc *kp)
  65 {
  66         struct session *sess = p->p_pgrp->pg_session;
  67
  68         bzero(kp, sizeof(*kp));
  69
  70         kp->kp_paddr = (uintptr_t)p;
  71         kp->kp_fd = (uintptr_t)p->p_fd;
  72
  73         kp->kp_flags = p->p_flag;
  74         kp->kp_stat = p->p_stat;
  75         kp->kp_lock = p->p_lock;
  76         kp->kp_acflag = p->p_acflag;
  77         kp->kp_traceflag = p->p_traceflag;
  78         kp->kp_siglist = p->p_siglist;
  79         kp->kp_sigignore = p->p_sigignore;
  80         kp->kp_sigcatch = p->p_sigcatch;
  81         kp->kp_sigflag = p->p_sigacts->ps_flag;
  82         kp->kp_start = p->p_start;
  83
  84         strncpy(kp->kp_comm, p->p_comm, sizeof(kp->kp_comm) - 1);
  85         kp->kp_comm[sizeof(kp->kp_comm) - 1] = 0;
  86
  87         kp->kp_uid = p->p_ucred->cr_uid;
  88         kp->kp_ngroups = p->p_ucred->cr_ngroups;
  89         bcopy(p->p_ucred->cr_groups, kp->kp_groups,
  90               NGROUPS * sizeof(kp->kp_groups[0]));
  91         kp->kp_ruid = p->p_ucred->cr_ruid;
  92         kp->kp_svuid = p->p_ucred->cr_svuid;
  93         kp->kp_rgid = p->p_ucred->cr_rgid;
  94         kp->kp_svgid = p->p_ucred->cr_svgid;
  95
  96         kp->kp_pid = p->p_pid;
  97         if (p->p_oppid != 0)
  98                 kp->kp_ppid = p->p_oppid;
  99         else
 100                 kp->kp_ppid = p->p_pptr != NULL ? p->p_pptr->p_pid : -1;
 101         kp->kp_pgid = p->p_pgrp->pg_id;
 102         kp->kp_jobc = p->p_pgrp->pg_jobc;
 103         kp->kp_sid = sess->s_sid;
 104         bcopy(sess->s_login, kp->kp_login, MAXLOGNAME);
 105         if (sess->s_ttyvp != NULL)
 106                 kp->kp_auxflags |= KI_CTTY;
 107         if (SESS_LEADER(p))
 108                 kp->kp_auxflags |= KI_SLEADER;
 109         if (((p->p_flag & P_CONTROLT) != 0) && (sess->s_ttyp != NULL)) {
 110                 kp->kp_tdev = dev2udev(sess->s_ttyp->t_dev);
 111                 if (sess->s_ttyp->t_pgrp != NULL)
 112                         kp->kp_tpgid = sess->s_ttyp->t_pgrp->pg_id;
 113                 else
 114                         kp->kp_tpgid = -1;
 115                 if (sess->s_ttyp->t_session != NULL)
 116                         kp->kp_tsid = sess->s_ttyp->t_session->s_sid;
 117                 else
 118                         kp->kp_tsid = -1;
 119         } else {
 120                 kp->kp_tdev = NOUDEV;
 121         }
 122         kp->kp_exitstat = p->p_xstat;
 123         kp->kp_nthreads = p->p_nthreads;
 124         kp->kp_nice = p->p_nice;
 125         kp->kp_swtime = p->p_swtime;
 126
 127         kp->kp_vm_map_size = p->p_vmspace->vm_map.size;
 128         kp->kp_vm_rssize = vmspace_resident_count(p->p_vmspace);
 129         kp->kp_vm_swrss = p->p_vmspace->vm_swrss;
 130         kp->kp_vm_tsize = p->p_vmspace->vm_tsize;
 131         kp->kp_vm_dsize = p->p_vmspace->vm_dsize;
 132         kp->kp_vm_ssize = p->p_vmspace->vm_ssize;
 133
 134         if (jailed(p->p_ucred))
 135                 kp->kp_jailid = p->p_ucred->cr_prison->pr_id;
 136
 137         kp->kp_ru = p->p_ru;
 138         kp->kp_ru = p->p_cru;
 139 }
 140
 141 /*
 142  * Fill in a struct kinfo_lwp.
 143  */
 144 void
 145 fill_kinfo_lwp(struct lwp *lwp, struct kinfo_lwp *kl)
 146 {
 147         bzero(kl, sizeof(*kl));
 148
 149         kl->kl_pid = lwp->lwp_proc->p_pid;
 150         kl->kl_tid = lwp->lwp_tid;
 151
 152         kl->kl_flags = lwp->lwp_flag;
 153         kl->kl_stat = lwp->lwp_stat;
 154         kl->kl_lock = lwp->lwp_lock;
 155         kl->kl_tdflags = lwp->lwp_thread->td_flags;
 156 #ifdef SMP
 157         kl->kl_mpcount = lwp->lwp_thread->td_mpcount;
 158 #else
 159         kl->kl_mpcount = 0;
 160 #endif
 161
 162         kl->kl_prio = lwp->lwp_usdata.bsd4.priority;    /* XXX TGEN dangerous assumption */
 163         kl->kl_tdprio = lwp->lwp_thread->td_pri;
 164         kl->kl_rtprio = lwp->lwp_rtprio;
 165
 166         kl->kl_uticks = lwp->lwp_thread->td_uticks;
 167         kl->kl_sticks = lwp->lwp_thread->td_sticks;
 168         kl->kl_iticks = lwp->lwp_thread->td_iticks;
 169         kl->kl_cpticks = lwp->lwp_cpticks;
 170         kl->kl_pctcpu = lwp->lwp_pctcpu;
 171         kl->kl_slptime = lwp->lwp_slptime;
 172         kl->kl_origcpu = lwp->lwp_usdata.bsd4.origcpu;  /* XXX TGEN same */
 173         kl->kl_estcpu = lwp->lwp_usdata.bsd4.estcpu;
 174         kl->kl_cpuid = lwp->lwp_thread->td_gd->gd_cpuid;
 175
 176         kl->kl_ru = lwp->lwp_ru;
 177
 178         kl->kl_siglist = lwp->lwp_siglist;
 179         kl->kl_sigmask = lwp->lwp_sigmask;
 180
 181         kl->kl_wchan = (uintptr_t)lwp->lwp_thread->td_wchan;
 182         if (lwp->lwp_thread->td_wmesg) {
 183                 strncpy(kl->kl_wmesg, lwp->lwp_thread->td_wmesg, WMESGLEN);
 184                 kl->kl_wmesg[WMESGLEN] = 0;
 185         }
 186 }
 187
 188 /*
 189  * Fill in a struct kinfo_proc for kernel threads (i.e. those without proc).
 190  */
 191 void
 192 fill_kinfo_proc_kthread(struct thread *td, struct kinfo_proc *kp)
 193 {
 194         bzero(kp, sizeof(*kp));
 195
 196         /*
 197          * Fill in fake proc information and semi-fake lwp info.
 198          */
 199         kp->kp_pid = -1;
 200         kp->kp_tdev = NOUDEV;
 201         strncpy(kp->kp_comm, td->td_comm, sizeof(kp->kp_comm) - 1);
 202         kp->kp_comm[sizeof(kp->kp_comm) - 1] = 0;
 203         kp->kp_flags = P_SYSTEM;
 204         kp->kp_stat = SACTIVE;
 205
 206         kp->kp_lwp.kl_pid = -1;
 207         kp->kp_lwp.kl_tid = (uintptr_t)td;
 208         kp->kp_lwp.kl_tdflags = td->td_flags;
 209 #ifdef SMP
 210         kp->kp_lwp.kl_mpcount = td->td_mpcount;
 211 #else /* !SMP */
 212         kp->kp_lwp.kl_mpcount = 0;
 213 #endif /* SMP */
 214
 215         kp->kp_lwp.kl_tdprio = td->td_pri;
 216         kp->kp_lwp.kl_rtprio.type = RTP_PRIO_THREAD;
 217         kp->kp_lwp.kl_rtprio.prio = td->td_pri & TDPRI_MASK;
 218
 219         kp->kp_lwp.kl_uticks = td->td_uticks;
 220         kp->kp_lwp.kl_sticks = td->td_sticks;
 221         kp->kp_lwp.kl_iticks = td->td_iticks;
 222         kp->kp_lwp.kl_cpuid = td->td_gd->gd_cpuid;
 223
 224         kp->kp_lwp.kl_wchan = (uintptr_t)td->td_wchan;
 225         if (td->td_flags & TDF_RUNQ)
 226                 kp->kp_lwp.kl_stat = LSRUN;
 227         else
 228                 kp->kp_lwp.kl_stat = LSSLEEP;
 229         if (td->td_wmesg) {
 230                 strncpy(kp->kp_lwp.kl_wmesg, td->td_wmesg, WMESGLEN);
 231                 kp->kp_lwp.kl_wmesg[WMESGLEN] = 0;
 232         }
 233 }