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 1.17 2008/01/07 23:41:55 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 * NOTE! We may be asked to fill in kinfo_proc for a zombied process, and 64 * the process may be in the middle of being deallocated. Check all pointers 65 * for NULL. 66 */ 67 void 68 fill_kinfo_proc(struct proc *p, struct kinfo_proc *kp) 69 { 70 struct session *sess; 71 struct pgrp *pgrp; 72 73 pgrp = p->p_pgrp; 74 sess = pgrp ? pgrp->pg_session : NULL; 75 76 bzero(kp, sizeof(*kp)); 77 78 kp->kp_paddr = (uintptr_t)p; 79 kp->kp_fd = (uintptr_t)p->p_fd; 80 81 kp->kp_flags = p->p_flag; 82 kp->kp_stat = p->p_stat; 83 kp->kp_lock = p->p_lock; 84 kp->kp_acflag = p->p_acflag; 85 kp->kp_traceflag = p->p_traceflag; 86 kp->kp_siglist = p->p_siglist; 87 if (p->p_sigacts) { 88 kp->kp_sigignore = p->p_sigignore; /* p_sigacts-> */ 89 kp->kp_sigcatch = p->p_sigcatch; /* p_sigacts-> */ 90 kp->kp_sigflag = p->p_sigacts->ps_flag; 91 } 92 kp->kp_start = p->p_start; 93 94 strncpy(kp->kp_comm, p->p_comm, sizeof(kp->kp_comm) - 1); 95 kp->kp_comm[sizeof(kp->kp_comm) - 1] = 0; 96 97 if (p->p_ucred) { 98 kp->kp_uid = p->p_ucred->cr_uid; 99 kp->kp_ngroups = p->p_ucred->cr_ngroups; 100 if (p->p_ucred->cr_groups) { 101 bcopy(p->p_ucred->cr_groups, kp->kp_groups, 102 NGROUPS * sizeof(kp->kp_groups[0])); 103 } 104 kp->kp_ruid = p->p_ucred->cr_ruid; 105 kp->kp_svuid = p->p_ucred->cr_svuid; 106 kp->kp_rgid = p->p_ucred->cr_rgid; 107 kp->kp_svgid = p->p_ucred->cr_svgid; 108 } 109 110 kp->kp_pid = p->p_pid; 111 if (p->p_oppid != 0) 112 kp->kp_ppid = p->p_oppid; 113 else 114 kp->kp_ppid = p->p_pptr != NULL ? p->p_pptr->p_pid : -1; 115 if (pgrp) { 116 kp->kp_pgid = pgrp->pg_id; 117 kp->kp_jobc = pgrp->pg_jobc; 118 } 119 if (sess) { 120 kp->kp_sid = sess->s_sid; 121 bcopy(sess->s_login, kp->kp_login, MAXLOGNAME); 122 if (sess->s_ttyvp != NULL) 123 kp->kp_auxflags |= KI_CTTY; 124 if (SESS_LEADER(p)) 125 kp->kp_auxflags |= KI_SLEADER; 126 } 127 if (sess && (p->p_flag & P_CONTROLT) != 0 && sess->s_ttyp != NULL) { 128 kp->kp_tdev = dev2udev(sess->s_ttyp->t_dev); 129 if (sess->s_ttyp->t_pgrp != NULL) 130 kp->kp_tpgid = sess->s_ttyp->t_pgrp->pg_id; 131 else 132 kp->kp_tpgid = -1; 133 if (sess->s_ttyp->t_session != NULL) 134 kp->kp_tsid = sess->s_ttyp->t_session->s_sid; 135 else 136 kp->kp_tsid = -1; 137 } else { 138 kp->kp_tdev = NOUDEV; 139 } 140 kp->kp_exitstat = p->p_xstat; 141 kp->kp_nthreads = p->p_nthreads; 142 kp->kp_nice = p->p_nice; 143 kp->kp_swtime = p->p_swtime; 144 145 if (p->p_vmspace) { 146 kp->kp_vm_map_size = p->p_vmspace->vm_map.size; 147 kp->kp_vm_rssize = vmspace_resident_count(p->p_vmspace); 148 kp->kp_vm_swrss = p->p_vmspace->vm_swrss; 149 kp->kp_vm_tsize = p->p_vmspace->vm_tsize; 150 kp->kp_vm_dsize = p->p_vmspace->vm_dsize; 151 kp->kp_vm_ssize = p->p_vmspace->vm_ssize; 152 } 153 154 if (p->p_ucred && jailed(p->p_ucred)) 155 kp->kp_jailid = p->p_ucred->cr_prison->pr_id; 156 157 kp->kp_ru = p->p_ru; 158 kp->kp_ru = p->p_cru; 159 } 160 161 /* 162 * Fill in a struct kinfo_lwp. 163 */ 164 void 165 fill_kinfo_lwp(struct lwp *lwp, struct kinfo_lwp *kl) 166 { 167 bzero(kl, sizeof(*kl)); 168 169 kl->kl_pid = lwp->lwp_proc->p_pid; 170 kl->kl_tid = lwp->lwp_tid; 171 172 kl->kl_flags = lwp->lwp_flag; 173 kl->kl_stat = lwp->lwp_stat; 174 kl->kl_lock = lwp->lwp_lock; 175 kl->kl_tdflags = lwp->lwp_thread->td_flags; 176 177 /* 178 * The process/lwp stat may not reflect whether the process is 179 * actually sleeping or not if the related thread was directly 180 * descheduled by LWKT. Adjust the stat if the thread is not 181 * runnable and not waiting to be scheduled on a cpu by the 182 * user process scheduler. 183 */ 184 if (kl->kl_stat == LSRUN) { 185 if ((kl->kl_tdflags & TDF_RUNQ) == 0 && 186 (lwp->lwp_flag & LWP_ONRUNQ) == 0) { 187 kl->kl_stat = LSSLEEP; 188 } 189 } 190 #ifdef SMP 191 kl->kl_mpcount = lwp->lwp_thread->td_mpcount; 192 #else 193 kl->kl_mpcount = 0; 194 #endif 195 196 kl->kl_prio = lwp->lwp_usdata.bsd4.priority; /* XXX TGEN dangerous assumption */ 197 kl->kl_tdprio = lwp->lwp_thread->td_pri; 198 kl->kl_rtprio = lwp->lwp_rtprio; 199 200 kl->kl_uticks = lwp->lwp_thread->td_uticks; 201 kl->kl_sticks = lwp->lwp_thread->td_sticks; 202 kl->kl_iticks = lwp->lwp_thread->td_iticks; 203 kl->kl_cpticks = lwp->lwp_cpticks; 204 kl->kl_pctcpu = lwp->lwp_pctcpu; 205 kl->kl_slptime = lwp->lwp_slptime; 206 kl->kl_origcpu = lwp->lwp_usdata.bsd4.origcpu; /* XXX TGEN same */ 207 kl->kl_estcpu = lwp->lwp_usdata.bsd4.estcpu; 208 kl->kl_cpuid = lwp->lwp_thread->td_gd->gd_cpuid; 209 210 kl->kl_ru = lwp->lwp_ru; 211 212 kl->kl_siglist = lwp->lwp_siglist; 213 kl->kl_sigmask = lwp->lwp_sigmask; 214 215 kl->kl_wchan = (uintptr_t)lwp->lwp_thread->td_wchan; 216 if (lwp->lwp_thread->td_wmesg) { 217 strncpy(kl->kl_wmesg, lwp->lwp_thread->td_wmesg, WMESGLEN); 218 kl->kl_wmesg[WMESGLEN] = 0; 219 } 220 } 221 222 /* 223 * Fill in a struct kinfo_proc for kernel threads (i.e. those without proc). 224 */ 225 void 226 fill_kinfo_proc_kthread(struct thread *td, struct kinfo_proc *kp) 227 { 228 bzero(kp, sizeof(*kp)); 229 230 /* 231 * Fill in fake proc information and semi-fake lwp info. 232 */ 233 kp->kp_pid = -1; 234 kp->kp_tdev = NOUDEV; 235 strncpy(kp->kp_comm, td->td_comm, sizeof(kp->kp_comm) - 1); 236 kp->kp_comm[sizeof(kp->kp_comm) - 1] = 0; 237 kp->kp_flags = P_SYSTEM; 238 kp->kp_stat = SACTIVE; 239 240 kp->kp_lwp.kl_pid = -1; 241 kp->kp_lwp.kl_tid = -1; 242 kp->kp_lwp.kl_tdflags = td->td_flags; 243 #ifdef SMP 244 kp->kp_lwp.kl_mpcount = td->td_mpcount; 245 #else /* !SMP */ 246 kp->kp_lwp.kl_mpcount = 0; 247 #endif /* SMP */ 248 249 kp->kp_lwp.kl_tdprio = td->td_pri; 250 kp->kp_lwp.kl_rtprio.type = RTP_PRIO_THREAD; 251 kp->kp_lwp.kl_rtprio.prio = td->td_pri & TDPRI_MASK; 252 253 kp->kp_lwp.kl_uticks = td->td_uticks; 254 kp->kp_lwp.kl_sticks = td->td_sticks; 255 kp->kp_lwp.kl_iticks = td->td_iticks; 256 kp->kp_lwp.kl_cpuid = td->td_gd->gd_cpuid; 257 258 kp->kp_lwp.kl_wchan = (uintptr_t)td->td_wchan; 259 if (td->td_flags & TDF_RUNQ) 260 kp->kp_lwp.kl_stat = LSRUN; 261 else 262 kp->kp_lwp.kl_stat = LSSLEEP; 263 if (td->td_wmesg) { 264 strncpy(kp->kp_lwp.kl_wmesg, td->td_wmesg, WMESGLEN); 265 kp->kp_lwp.kl_wmesg[WMESGLEN] = 0; 266 } 267 } 268