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/mplock2.h> 53 #include <sys/globaldata.h> 54 #ifdef _KERNEL 55 #include <sys/systm.h> 56 #include <sys/sysref.h> 57 #include <sys/sysref2.h> 58 #else 59 #include <string.h> 60 61 dev_t dev2udev(cdev_t dev); /* kvm_proc.c */ 62 #endif 63 64 65 /* 66 * Fill in a struct kinfo_proc. 67 * 68 * NOTE! We may be asked to fill in kinfo_proc for a zombied process, and 69 * the process may be in the middle of being deallocated. Check all pointers 70 * for NULL. 71 * 72 * Caller must hold p->p_token 73 */ 74 void 75 fill_kinfo_proc(struct proc *p, struct kinfo_proc *kp) 76 { 77 struct session *sess; 78 struct pgrp *pgrp; 79 struct vmspace *vm; 80 81 pgrp = p->p_pgrp; 82 sess = pgrp ? pgrp->pg_session : NULL; 83 84 bzero(kp, sizeof(*kp)); 85 86 kp->kp_paddr = (uintptr_t)p; 87 kp->kp_fd = (uintptr_t)p->p_fd; 88 89 kp->kp_flags = p->p_flags; 90 kp->kp_stat = p->p_stat; 91 kp->kp_lock = p->p_lock; 92 kp->kp_acflag = p->p_acflag; 93 kp->kp_traceflag = p->p_traceflag; 94 kp->kp_siglist = p->p_siglist; 95 if (p->p_sigacts) { 96 kp->kp_sigignore = p->p_sigignore; /* p_sigacts-> */ 97 kp->kp_sigcatch = p->p_sigcatch; /* p_sigacts-> */ 98 kp->kp_sigflag = p->p_sigacts->ps_flag; 99 } 100 kp->kp_start = p->p_start; 101 102 strncpy(kp->kp_comm, p->p_comm, sizeof(kp->kp_comm) - 1); 103 kp->kp_comm[sizeof(kp->kp_comm) - 1] = 0; 104 105 if (p->p_ucred) { 106 kp->kp_uid = p->p_ucred->cr_uid; 107 kp->kp_ngroups = p->p_ucred->cr_ngroups; 108 if (p->p_ucred->cr_groups) { 109 bcopy(p->p_ucred->cr_groups, kp->kp_groups, 110 NGROUPS * sizeof(kp->kp_groups[0])); 111 } 112 kp->kp_ruid = p->p_ucred->cr_ruid; 113 kp->kp_svuid = p->p_ucred->cr_svuid; 114 kp->kp_rgid = p->p_ucred->cr_rgid; 115 kp->kp_svgid = p->p_ucred->cr_svgid; 116 } 117 118 kp->kp_pid = p->p_pid; 119 if (p->p_oppid != 0) 120 kp->kp_ppid = p->p_oppid; 121 else 122 kp->kp_ppid = p->p_pptr != NULL ? p->p_pptr->p_pid : -1; 123 if (pgrp) { 124 kp->kp_pgid = pgrp->pg_id; 125 kp->kp_jobc = pgrp->pg_jobc; 126 } 127 if (sess) { 128 kp->kp_sid = sess->s_sid; 129 bcopy(sess->s_login, kp->kp_login, MAXLOGNAME); 130 if (sess->s_ttyvp != NULL) 131 kp->kp_auxflags |= KI_CTTY; 132 if ((p->p_session != NULL) && SESS_LEADER(p)) 133 kp->kp_auxflags |= KI_SLEADER; 134 } 135 if (sess && (p->p_flags & P_CONTROLT) != 0 && sess->s_ttyp != NULL) { 136 kp->kp_tdev = dev2udev(sess->s_ttyp->t_dev); 137 if (sess->s_ttyp->t_pgrp != NULL) 138 kp->kp_tpgid = sess->s_ttyp->t_pgrp->pg_id; 139 else 140 kp->kp_tpgid = -1; 141 if (sess->s_ttyp->t_session != NULL) 142 kp->kp_tsid = sess->s_ttyp->t_session->s_sid; 143 else 144 kp->kp_tsid = -1; 145 } else { 146 kp->kp_tdev = NOUDEV; 147 } 148 kp->kp_exitstat = p->p_xstat; 149 kp->kp_nthreads = p->p_nthreads; 150 kp->kp_nice = p->p_nice; 151 kp->kp_swtime = p->p_swtime; 152 153 if ((vm = p->p_vmspace) != NULL) { 154 #ifdef _KERNEL 155 /*sysref_get(&vm->vm_sysref);*/ 156 /*lwkt_gettoken(&vm->vm_map.token);*/ 157 #endif 158 kp->kp_vm_map_size = vm->vm_map.size; 159 kp->kp_vm_rssize = vmspace_resident_count(vm); 160 #ifdef _KERNEL 161 /*XXX MP RACES */ 162 /*kp->kp_vm_prssize = vmspace_president_count(vm);*/ 163 #endif 164 kp->kp_vm_swrss = vm->vm_swrss; 165 kp->kp_vm_tsize = vm->vm_tsize; 166 kp->kp_vm_dsize = vm->vm_dsize; 167 kp->kp_vm_ssize = vm->vm_ssize; 168 #ifdef _KERNEL 169 /*lwkt_reltoken(&vm->vm_map.token);*/ 170 /*sysref_put(&vm->vm_sysref);*/ 171 #endif 172 } 173 174 if (p->p_ucred && jailed(p->p_ucred)) 175 kp->kp_jailid = p->p_ucred->cr_prison->pr_id; 176 177 kp->kp_ru = p->p_ru; 178 kp->kp_cru = p->p_cru; 179 } 180 181 /* 182 * Fill in a struct kinfo_lwp. 183 */ 184 void 185 fill_kinfo_lwp(struct lwp *lwp, struct kinfo_lwp *kl) 186 { 187 bzero(kl, sizeof(*kl)); 188 189 kl->kl_pid = lwp->lwp_proc->p_pid; 190 kl->kl_tid = lwp->lwp_tid; 191 192 kl->kl_flags = lwp->lwp_flags; 193 kl->kl_stat = lwp->lwp_stat; 194 kl->kl_lock = lwp->lwp_lock; 195 kl->kl_tdflags = lwp->lwp_thread->td_flags; 196 197 /* 198 * The process/lwp stat may not reflect whether the process is 199 * actually sleeping or not if the related thread was directly 200 * descheduled by LWKT. Adjust the stat if the thread is not 201 * runnable and not waiting to be scheduled on a cpu by the 202 * user process scheduler. 203 */ 204 if (kl->kl_stat == LSRUN) { 205 if ((kl->kl_tdflags & TDF_RUNQ) == 0 && 206 (lwp->lwp_mpflags & LWP_MP_ONRUNQ) == 0) { 207 kl->kl_stat = LSSLEEP; 208 } 209 } 210 #ifdef SMP 211 kl->kl_mpcount = get_mplock_count(lwp->lwp_thread); 212 #else 213 kl->kl_mpcount = 0; 214 #endif 215 216 kl->kl_prio = lwp->lwp_usdata.bsd4.priority; /* XXX TGEN dangerous assumption */ 217 kl->kl_tdprio = lwp->lwp_thread->td_pri; 218 kl->kl_rtprio = lwp->lwp_rtprio; 219 220 kl->kl_uticks = lwp->lwp_thread->td_uticks; 221 kl->kl_sticks = lwp->lwp_thread->td_sticks; 222 kl->kl_iticks = lwp->lwp_thread->td_iticks; 223 kl->kl_cpticks = lwp->lwp_cpticks; 224 kl->kl_pctcpu = lwp->lwp_pctcpu; 225 kl->kl_slptime = lwp->lwp_slptime; 226 kl->kl_origcpu = lwp->lwp_usdata.bsd4.batch; 227 kl->kl_estcpu = lwp->lwp_usdata.bsd4.estcpu; 228 kl->kl_cpuid = lwp->lwp_thread->td_gd->gd_cpuid; 229 230 kl->kl_ru = lwp->lwp_ru; 231 232 kl->kl_siglist = lwp->lwp_siglist; 233 kl->kl_sigmask = lwp->lwp_sigmask; 234 235 kl->kl_wchan = (uintptr_t)lwp->lwp_thread->td_wchan; 236 if (lwp->lwp_thread->td_wmesg) { 237 strncpy(kl->kl_wmesg, lwp->lwp_thread->td_wmesg, WMESGLEN); 238 kl->kl_wmesg[WMESGLEN] = 0; 239 } 240 } 241 242 /* 243 * Fill in a struct kinfo_proc for kernel threads (i.e. those without proc). 244 */ 245 void 246 fill_kinfo_proc_kthread(struct thread *td, struct kinfo_proc *kp) 247 { 248 bzero(kp, sizeof(*kp)); 249 250 /* 251 * Fill in fake proc information and semi-fake lwp info. 252 */ 253 kp->kp_pid = -1; 254 kp->kp_tdev = NOUDEV; 255 strncpy(kp->kp_comm, td->td_comm, sizeof(kp->kp_comm) - 1); 256 kp->kp_comm[sizeof(kp->kp_comm) - 1] = 0; 257 kp->kp_flags = P_SYSTEM; 258 kp->kp_stat = SACTIVE; 259 260 kp->kp_lwp.kl_pid = -1; 261 kp->kp_lwp.kl_tid = -1; 262 kp->kp_lwp.kl_tdflags = td->td_flags; 263 #ifdef SMP 264 kp->kp_lwp.kl_mpcount = get_mplock_count(td); 265 #else /* !SMP */ 266 kp->kp_lwp.kl_mpcount = 0; 267 #endif /* SMP */ 268 269 kp->kp_lwp.kl_tdprio = td->td_pri; 270 kp->kp_lwp.kl_rtprio.type = RTP_PRIO_THREAD; 271 kp->kp_lwp.kl_rtprio.prio = td->td_pri; 272 273 kp->kp_lwp.kl_uticks = td->td_uticks; 274 kp->kp_lwp.kl_sticks = td->td_sticks; 275 kp->kp_lwp.kl_iticks = td->td_iticks; 276 kp->kp_lwp.kl_cpuid = td->td_gd->gd_cpuid; 277 278 kp->kp_lwp.kl_wchan = (uintptr_t)td->td_wchan; 279 if (td->td_flags & TDF_RUNQ) 280 kp->kp_lwp.kl_stat = LSRUN; 281 else 282 kp->kp_lwp.kl_stat = LSSLEEP; 283 if (td->td_wmesg) { 284 strncpy(kp->kp_lwp.kl_wmesg, td->td_wmesg, WMESGLEN); 285 kp->kp_lwp.kl_wmesg[WMESGLEN] = 0; 286 } 287 } 288