1/* 2 * Copyright (c) 1995 Terrence R. Lambert 3 * All rights reserved. 4 * 5 * Copyright (c) 1982, 1986, 1989, 1991, 1992, 1993 6 * The Regents of the University of California. All rights reserved. 7 * (c) UNIX System Laboratories, Inc. 8 * All or some portions of this file are derived from material licensed 9 * to the University of California by American Telephone and Telegraph 10 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 11 * the permission of UNIX System Laboratories, Inc. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 3. All advertising materials mentioning features or use of this software 22 * must display the following acknowledgement: 23 * This product includes software developed by the University of 24 * California, Berkeley and its contributors. 25 * 4. Neither the name of the University nor the names of its contributors 26 * may be used to endorse or promote products derived from this software 27 * without specific prior written permission. 28 * 29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 32 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 39 * SUCH DAMAGE. 40 * 41 * @(#)init_main.c 8.9 (Berkeley) 1/21/94
| 1/* 2 * Copyright (c) 1995 Terrence R. Lambert 3 * All rights reserved. 4 * 5 * Copyright (c) 1982, 1986, 1989, 1991, 1992, 1993 6 * The Regents of the University of California. All rights reserved. 7 * (c) UNIX System Laboratories, Inc. 8 * All or some portions of this file are derived from material licensed 9 * to the University of California by American Telephone and Telegraph 10 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 11 * the permission of UNIX System Laboratories, Inc. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 3. All advertising materials mentioning features or use of this software 22 * must display the following acknowledgement: 23 * This product includes software developed by the University of 24 * California, Berkeley and its contributors. 25 * 4. Neither the name of the University nor the names of its contributors 26 * may be used to endorse or promote products derived from this software 27 * without specific prior written permission. 28 * 29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 32 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 39 * SUCH DAMAGE. 40 * 41 * @(#)init_main.c 8.9 (Berkeley) 1/21/94
|
42 * $FreeBSD: head/sys/kern/init_main.c 91066 2002-02-22 13:32:01Z phk $
| 42 * $FreeBSD: head/sys/kern/init_main.c 91140 2002-02-23 11:12:57Z tanimura $
|
43 */ 44 45#include "opt_init_path.h" 46 47#include <sys/param.h> 48#include <sys/kernel.h> 49#include <sys/file.h> 50#include <sys/filedesc.h> 51#include <sys/ktr.h> 52#include <sys/lock.h> 53#include <sys/mount.h> 54#include <sys/mutex.h> 55#include <sys/sysctl.h> 56#include <sys/proc.h> 57#include <sys/resourcevar.h> 58#include <sys/systm.h> 59#include <sys/signalvar.h> 60#include <sys/vnode.h> 61#include <sys/sysent.h> 62#include <sys/reboot.h> 63#include <sys/sx.h> 64#include <sys/sysproto.h> 65#include <sys/vmmeter.h> 66#include <sys/unistd.h> 67#include <sys/malloc.h> 68#include <sys/conf.h> 69 70#include <machine/cpu.h> 71 72#include <vm/vm.h> 73#include <vm/vm_param.h> 74#include <vm/pmap.h> 75#include <vm/vm_map.h> 76#include <sys/user.h> 77#include <sys/copyright.h> 78 79void mi_startup(void); /* Should be elsewhere */ 80 81/* Components of the first process -- never freed. */ 82static struct session session0; 83static struct pgrp pgrp0; 84struct proc proc0; 85struct thread thread0; 86static struct procsig procsig0; 87static struct filedesc0 filedesc0; 88static struct plimit limit0; 89static struct vmspace vmspace0; 90struct proc *initproc; 91 92int cmask = CMASK; 93extern int fallback_elf_brand; 94 95struct vnode *rootvp; 96int boothowto = 0; /* initialized so that it can be patched */ 97SYSCTL_INT(_debug, OID_AUTO, boothowto, CTLFLAG_RD, &boothowto, 0, ""); 98int bootverbose; 99SYSCTL_INT(_debug, OID_AUTO, bootverbose, CTLFLAG_RW, &bootverbose, 0, ""); 100 101/* 102 * This ensures that there is at least one entry so that the sysinit_set 103 * symbol is not undefined. A sybsystem ID of SI_SUB_DUMMY is never 104 * executed. 105 */ 106SYSINIT(placeholder, SI_SUB_DUMMY, SI_ORDER_ANY, NULL, NULL) 107 108/* 109 * The sysinit table itself. Items are checked off as the are run. 110 * If we want to register new sysinit types, add them to newsysinit. 111 */ 112SET_DECLARE(sysinit_set, struct sysinit); 113struct sysinit **sysinit, **sysinit_end; 114struct sysinit **newsysinit, **newsysinit_end; 115 116/* 117 * Merge a new sysinit set into the current set, reallocating it if 118 * necessary. This can only be called after malloc is running. 119 */ 120void 121sysinit_add(struct sysinit **set, struct sysinit **set_end) 122{ 123 struct sysinit **newset; 124 struct sysinit **sipp; 125 struct sysinit **xipp; 126 int count; 127 128 count = set_end - set; 129 if (newsysinit) 130 count += newsysinit_end - newsysinit; 131 else 132 count += sysinit_end - sysinit; 133 newset = malloc(count * sizeof(*sipp), M_TEMP, M_NOWAIT); 134 if (newset == NULL) 135 panic("cannot malloc for sysinit"); 136 xipp = newset; 137 if (newsysinit) 138 for (sipp = newsysinit; sipp < newsysinit_end; sipp++) 139 *xipp++ = *sipp; 140 else 141 for (sipp = sysinit; sipp < sysinit_end; sipp++) 142 *xipp++ = *sipp; 143 for (sipp = set; sipp < set_end; sipp++) 144 *xipp++ = *sipp; 145 if (newsysinit) 146 free(newsysinit, M_TEMP); 147 newsysinit = newset; 148 newsysinit_end = newset + count; 149} 150 151/* 152 * System startup; initialize the world, create process 0, mount root 153 * filesystem, and fork to create init and pagedaemon. Most of the 154 * hard work is done in the lower-level initialization routines including 155 * startup(), which does memory initialization and autoconfiguration. 156 * 157 * This allows simple addition of new kernel subsystems that require 158 * boot time initialization. It also allows substitution of subsystem 159 * (for instance, a scheduler, kernel profiler, or VM system) by object 160 * module. Finally, it allows for optional "kernel threads". 161 */ 162void 163mi_startup(void) 164{ 165 166 register struct sysinit **sipp; /* system initialization*/ 167 register struct sysinit **xipp; /* interior loop of sort*/ 168 register struct sysinit *save; /* bubble*/ 169 170 if (sysinit == NULL) { 171 sysinit = SET_BEGIN(sysinit_set); 172 sysinit_end = SET_LIMIT(sysinit_set); 173 } 174 175restart: 176 /* 177 * Perform a bubble sort of the system initialization objects by 178 * their subsystem (primary key) and order (secondary key). 179 */ 180 for (sipp = sysinit; sipp < sysinit_end; sipp++) { 181 for (xipp = sipp + 1; xipp < sysinit_end; xipp++) { 182 if ((*sipp)->subsystem < (*xipp)->subsystem || 183 ((*sipp)->subsystem == (*xipp)->subsystem && 184 (*sipp)->order <= (*xipp)->order)) 185 continue; /* skip*/ 186 save = *sipp; 187 *sipp = *xipp; 188 *xipp = save; 189 } 190 } 191 192 /* 193 * Traverse the (now) ordered list of system initialization tasks. 194 * Perform each task, and continue on to the next task. 195 * 196 * The last item on the list is expected to be the scheduler, 197 * which will not return. 198 */ 199 for (sipp = sysinit; sipp < sysinit_end; sipp++) { 200 201 if ((*sipp)->subsystem == SI_SUB_DUMMY) 202 continue; /* skip dummy task(s)*/ 203 204 if ((*sipp)->subsystem == SI_SUB_DONE) 205 continue; 206 207 /* Call function */ 208 (*((*sipp)->func))((*sipp)->udata); 209 210 /* Check off the one we're just done */ 211 (*sipp)->subsystem = SI_SUB_DONE; 212 213 /* Check if we've installed more sysinit items via KLD */ 214 if (newsysinit != NULL) { 215 if (sysinit != SET_BEGIN(sysinit_set)) 216 free(sysinit, M_TEMP); 217 sysinit = newsysinit; 218 sysinit_end = newsysinit_end; 219 newsysinit = NULL; 220 newsysinit_end = NULL; 221 goto restart; 222 } 223 } 224 225 panic("Shouldn't get here!"); 226 /* NOTREACHED*/ 227} 228 229 230/* 231 *************************************************************************** 232 **** 233 **** The following SYSINIT's belong elsewhere, but have not yet 234 **** been moved. 235 **** 236 *************************************************************************** 237 */ 238static void 239print_caddr_t(void *data __unused) 240{ 241 printf("%s", (char *)data); 242} 243SYSINIT(announce, SI_SUB_COPYRIGHT, SI_ORDER_FIRST, print_caddr_t, copyright) 244SYSINIT(version, SI_SUB_COPYRIGHT, SI_ORDER_SECOND, print_caddr_t, version) 245 246static void 247set_boot_verbose(void *data __unused) 248{ 249 250 if (boothowto & RB_VERBOSE) 251 bootverbose++; 252} 253SYSINIT(boot_verbose, SI_SUB_TUNABLES, SI_ORDER_ANY, set_boot_verbose, NULL) 254 255/* 256 *************************************************************************** 257 **** 258 **** The two following SYSINT's are proc0 specific glue code. I am not 259 **** convinced that they can not be safely combined, but their order of 260 **** operation has been maintained as the same as the original init_main.c 261 **** for right now. 262 **** 263 **** These probably belong in init_proc.c or kern_proc.c, since they 264 **** deal with proc0 (the fork template process). 265 **** 266 *************************************************************************** 267 */ 268/* ARGSUSED*/ 269static void 270proc0_init(void *dummy __unused) 271{ 272 register struct proc *p; 273 register struct filedesc0 *fdp; 274 register unsigned i; 275 struct thread *td; 276 struct ksegrp *kg; 277 struct kse *ke; 278 279 GIANT_REQUIRED; 280 p = &proc0; 281 td = &thread0; 282 283 /* 284 * Initialize magic number. 285 */ 286 p->p_magic = P_MAGIC; 287 288 /* 289 * Initialize thread, process and pgrp structures. 290 */ 291 procinit(); 292 293 /* 294 * Initialize sleep queue hash table 295 */ 296 sleepinit(); 297 298 /* 299 * additional VM structures 300 */ 301 vm_init2(); 302 303 /* 304 * Create process 0 (the swapper). 305 */ 306 LIST_INSERT_HEAD(&allproc, p, p_list); 307 LIST_INSERT_HEAD(PIDHASH(0), p, p_hash);
| 43 */ 44 45#include "opt_init_path.h" 46 47#include <sys/param.h> 48#include <sys/kernel.h> 49#include <sys/file.h> 50#include <sys/filedesc.h> 51#include <sys/ktr.h> 52#include <sys/lock.h> 53#include <sys/mount.h> 54#include <sys/mutex.h> 55#include <sys/sysctl.h> 56#include <sys/proc.h> 57#include <sys/resourcevar.h> 58#include <sys/systm.h> 59#include <sys/signalvar.h> 60#include <sys/vnode.h> 61#include <sys/sysent.h> 62#include <sys/reboot.h> 63#include <sys/sx.h> 64#include <sys/sysproto.h> 65#include <sys/vmmeter.h> 66#include <sys/unistd.h> 67#include <sys/malloc.h> 68#include <sys/conf.h> 69 70#include <machine/cpu.h> 71 72#include <vm/vm.h> 73#include <vm/vm_param.h> 74#include <vm/pmap.h> 75#include <vm/vm_map.h> 76#include <sys/user.h> 77#include <sys/copyright.h> 78 79void mi_startup(void); /* Should be elsewhere */ 80 81/* Components of the first process -- never freed. */ 82static struct session session0; 83static struct pgrp pgrp0; 84struct proc proc0; 85struct thread thread0; 86static struct procsig procsig0; 87static struct filedesc0 filedesc0; 88static struct plimit limit0; 89static struct vmspace vmspace0; 90struct proc *initproc; 91 92int cmask = CMASK; 93extern int fallback_elf_brand; 94 95struct vnode *rootvp; 96int boothowto = 0; /* initialized so that it can be patched */ 97SYSCTL_INT(_debug, OID_AUTO, boothowto, CTLFLAG_RD, &boothowto, 0, ""); 98int bootverbose; 99SYSCTL_INT(_debug, OID_AUTO, bootverbose, CTLFLAG_RW, &bootverbose, 0, ""); 100 101/* 102 * This ensures that there is at least one entry so that the sysinit_set 103 * symbol is not undefined. A sybsystem ID of SI_SUB_DUMMY is never 104 * executed. 105 */ 106SYSINIT(placeholder, SI_SUB_DUMMY, SI_ORDER_ANY, NULL, NULL) 107 108/* 109 * The sysinit table itself. Items are checked off as the are run. 110 * If we want to register new sysinit types, add them to newsysinit. 111 */ 112SET_DECLARE(sysinit_set, struct sysinit); 113struct sysinit **sysinit, **sysinit_end; 114struct sysinit **newsysinit, **newsysinit_end; 115 116/* 117 * Merge a new sysinit set into the current set, reallocating it if 118 * necessary. This can only be called after malloc is running. 119 */ 120void 121sysinit_add(struct sysinit **set, struct sysinit **set_end) 122{ 123 struct sysinit **newset; 124 struct sysinit **sipp; 125 struct sysinit **xipp; 126 int count; 127 128 count = set_end - set; 129 if (newsysinit) 130 count += newsysinit_end - newsysinit; 131 else 132 count += sysinit_end - sysinit; 133 newset = malloc(count * sizeof(*sipp), M_TEMP, M_NOWAIT); 134 if (newset == NULL) 135 panic("cannot malloc for sysinit"); 136 xipp = newset; 137 if (newsysinit) 138 for (sipp = newsysinit; sipp < newsysinit_end; sipp++) 139 *xipp++ = *sipp; 140 else 141 for (sipp = sysinit; sipp < sysinit_end; sipp++) 142 *xipp++ = *sipp; 143 for (sipp = set; sipp < set_end; sipp++) 144 *xipp++ = *sipp; 145 if (newsysinit) 146 free(newsysinit, M_TEMP); 147 newsysinit = newset; 148 newsysinit_end = newset + count; 149} 150 151/* 152 * System startup; initialize the world, create process 0, mount root 153 * filesystem, and fork to create init and pagedaemon. Most of the 154 * hard work is done in the lower-level initialization routines including 155 * startup(), which does memory initialization and autoconfiguration. 156 * 157 * This allows simple addition of new kernel subsystems that require 158 * boot time initialization. It also allows substitution of subsystem 159 * (for instance, a scheduler, kernel profiler, or VM system) by object 160 * module. Finally, it allows for optional "kernel threads". 161 */ 162void 163mi_startup(void) 164{ 165 166 register struct sysinit **sipp; /* system initialization*/ 167 register struct sysinit **xipp; /* interior loop of sort*/ 168 register struct sysinit *save; /* bubble*/ 169 170 if (sysinit == NULL) { 171 sysinit = SET_BEGIN(sysinit_set); 172 sysinit_end = SET_LIMIT(sysinit_set); 173 } 174 175restart: 176 /* 177 * Perform a bubble sort of the system initialization objects by 178 * their subsystem (primary key) and order (secondary key). 179 */ 180 for (sipp = sysinit; sipp < sysinit_end; sipp++) { 181 for (xipp = sipp + 1; xipp < sysinit_end; xipp++) { 182 if ((*sipp)->subsystem < (*xipp)->subsystem || 183 ((*sipp)->subsystem == (*xipp)->subsystem && 184 (*sipp)->order <= (*xipp)->order)) 185 continue; /* skip*/ 186 save = *sipp; 187 *sipp = *xipp; 188 *xipp = save; 189 } 190 } 191 192 /* 193 * Traverse the (now) ordered list of system initialization tasks. 194 * Perform each task, and continue on to the next task. 195 * 196 * The last item on the list is expected to be the scheduler, 197 * which will not return. 198 */ 199 for (sipp = sysinit; sipp < sysinit_end; sipp++) { 200 201 if ((*sipp)->subsystem == SI_SUB_DUMMY) 202 continue; /* skip dummy task(s)*/ 203 204 if ((*sipp)->subsystem == SI_SUB_DONE) 205 continue; 206 207 /* Call function */ 208 (*((*sipp)->func))((*sipp)->udata); 209 210 /* Check off the one we're just done */ 211 (*sipp)->subsystem = SI_SUB_DONE; 212 213 /* Check if we've installed more sysinit items via KLD */ 214 if (newsysinit != NULL) { 215 if (sysinit != SET_BEGIN(sysinit_set)) 216 free(sysinit, M_TEMP); 217 sysinit = newsysinit; 218 sysinit_end = newsysinit_end; 219 newsysinit = NULL; 220 newsysinit_end = NULL; 221 goto restart; 222 } 223 } 224 225 panic("Shouldn't get here!"); 226 /* NOTREACHED*/ 227} 228 229 230/* 231 *************************************************************************** 232 **** 233 **** The following SYSINIT's belong elsewhere, but have not yet 234 **** been moved. 235 **** 236 *************************************************************************** 237 */ 238static void 239print_caddr_t(void *data __unused) 240{ 241 printf("%s", (char *)data); 242} 243SYSINIT(announce, SI_SUB_COPYRIGHT, SI_ORDER_FIRST, print_caddr_t, copyright) 244SYSINIT(version, SI_SUB_COPYRIGHT, SI_ORDER_SECOND, print_caddr_t, version) 245 246static void 247set_boot_verbose(void *data __unused) 248{ 249 250 if (boothowto & RB_VERBOSE) 251 bootverbose++; 252} 253SYSINIT(boot_verbose, SI_SUB_TUNABLES, SI_ORDER_ANY, set_boot_verbose, NULL) 254 255/* 256 *************************************************************************** 257 **** 258 **** The two following SYSINT's are proc0 specific glue code. I am not 259 **** convinced that they can not be safely combined, but their order of 260 **** operation has been maintained as the same as the original init_main.c 261 **** for right now. 262 **** 263 **** These probably belong in init_proc.c or kern_proc.c, since they 264 **** deal with proc0 (the fork template process). 265 **** 266 *************************************************************************** 267 */ 268/* ARGSUSED*/ 269static void 270proc0_init(void *dummy __unused) 271{ 272 register struct proc *p; 273 register struct filedesc0 *fdp; 274 register unsigned i; 275 struct thread *td; 276 struct ksegrp *kg; 277 struct kse *ke; 278 279 GIANT_REQUIRED; 280 p = &proc0; 281 td = &thread0; 282 283 /* 284 * Initialize magic number. 285 */ 286 p->p_magic = P_MAGIC; 287 288 /* 289 * Initialize thread, process and pgrp structures. 290 */ 291 procinit(); 292 293 /* 294 * Initialize sleep queue hash table 295 */ 296 sleepinit(); 297 298 /* 299 * additional VM structures 300 */ 301 vm_init2(); 302 303 /* 304 * Create process 0 (the swapper). 305 */ 306 LIST_INSERT_HEAD(&allproc, p, p_list); 307 LIST_INSERT_HEAD(PIDHASH(0), p, p_hash);
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| 308 mtx_init(&pgrp0.pg_mtx, "process group", MTX_DEF);
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308 p->p_pgrp = &pgrp0; 309 LIST_INSERT_HEAD(PGRPHASH(0), &pgrp0, pg_hash); 310 LIST_INIT(&pgrp0.pg_members); 311 LIST_INSERT_HEAD(&pgrp0.pg_members, p, p_pglist); 312 313 pgrp0.pg_session = &session0;
| 309 p->p_pgrp = &pgrp0; 310 LIST_INSERT_HEAD(PGRPHASH(0), &pgrp0, pg_hash); 311 LIST_INIT(&pgrp0.pg_members); 312 LIST_INSERT_HEAD(&pgrp0.pg_members, p, p_pglist); 313 314 pgrp0.pg_session = &session0;
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| 315 mtx_init(&session0.s_mtx, "session", MTX_DEF);
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314 session0.s_count = 1; 315 session0.s_leader = p; 316 317#ifdef __ELF__ 318 p->p_sysent = &elf_freebsd_sysvec; 319#else 320 p->p_sysent = &aout_sysvec; 321#endif 322 323 ke = &proc0.p_kse; /* XXXKSE */ 324 kg = &proc0.p_ksegrp; /* XXXKSE */ 325 p->p_flag = P_SYSTEM; 326 p->p_sflag = PS_INMEM; 327 p->p_stat = SRUN; 328 p->p_ksegrp.kg_nice = NZERO; 329 kg->kg_pri_class = PRI_TIMESHARE; 330 kg->kg_user_pri = PUSER; 331 td->td_priority = PVM; 332 td->td_base_pri = PUSER; 333 334 p->p_peers = 0; 335 p->p_leader = p; 336 337 bcopy("swapper", p->p_comm, sizeof ("swapper")); 338 339 callout_init(&p->p_itcallout, 0); 340 callout_init(&td->td_slpcallout, 1); 341 342 /* Create credentials. */ 343 p->p_ucred = crget(); 344 p->p_ucred->cr_ngroups = 1; /* group 0 */ 345 p->p_ucred->cr_uidinfo = uifind(0); 346 p->p_ucred->cr_ruidinfo = uifind(0); 347 p->p_ucred->cr_prison = NULL; /* Don't jail it. */ 348 td->td_ucred = crhold(p->p_ucred); 349 350 /* Create procsig. */ 351 p->p_procsig = &procsig0; 352 p->p_procsig->ps_refcnt = 1; 353 354 /* Initialize signal state for process 0. */ 355 siginit(&proc0); 356 357 /* Create the file descriptor table. */ 358 fdp = &filedesc0; 359 p->p_fd = &fdp->fd_fd; 360 mtx_init(&fdp->fd_fd.fd_mtx, "struct filedesc", MTX_DEF); 361 fdp->fd_fd.fd_refcnt = 1; 362 fdp->fd_fd.fd_cmask = cmask; 363 fdp->fd_fd.fd_ofiles = fdp->fd_dfiles; 364 fdp->fd_fd.fd_ofileflags = fdp->fd_dfileflags; 365 fdp->fd_fd.fd_nfiles = NDFILE; 366 367 /* Create the limits structures. */ 368 p->p_limit = &limit0; 369 for (i = 0; i < sizeof(p->p_rlimit)/sizeof(p->p_rlimit[0]); i++) 370 limit0.pl_rlimit[i].rlim_cur = 371 limit0.pl_rlimit[i].rlim_max = RLIM_INFINITY; 372 limit0.pl_rlimit[RLIMIT_NOFILE].rlim_cur = 373 limit0.pl_rlimit[RLIMIT_NOFILE].rlim_max = maxfiles; 374 limit0.pl_rlimit[RLIMIT_NPROC].rlim_cur = 375 limit0.pl_rlimit[RLIMIT_NPROC].rlim_max = maxproc; 376 i = ptoa(cnt.v_free_count); 377 limit0.pl_rlimit[RLIMIT_RSS].rlim_max = i; 378 limit0.pl_rlimit[RLIMIT_MEMLOCK].rlim_max = i; 379 limit0.pl_rlimit[RLIMIT_MEMLOCK].rlim_cur = i / 3; 380 limit0.p_cpulimit = RLIM_INFINITY; 381 limit0.p_refcnt = 1; 382 383 /* Allocate a prototype map so we have something to fork. */ 384 pmap_pinit0(vmspace_pmap(&vmspace0)); 385 p->p_vmspace = &vmspace0; 386 vmspace0.vm_refcnt = 1; 387 vm_map_init(&vmspace0.vm_map, round_page(VM_MIN_ADDRESS), 388 trunc_page(VM_MAXUSER_ADDRESS)); 389 vmspace0.vm_map.pmap = vmspace_pmap(&vmspace0); 390 391 /* 392 * We continue to place resource usage info and signal 393 * actions in the user struct so they're pageable. 394 */ 395 p->p_stats = &p->p_uarea->u_stats; 396 p->p_sigacts = &p->p_uarea->u_sigacts; 397 398 /* 399 * Charge root for one process. 400 */ 401 (void)chgproccnt(p->p_ucred->cr_ruidinfo, 1, 0); 402} 403SYSINIT(p0init, SI_SUB_INTRINSIC, SI_ORDER_FIRST, proc0_init, NULL) 404 405/* ARGSUSED*/ 406static void 407proc0_post(void *dummy __unused) 408{ 409 struct timespec ts; 410 struct proc *p; 411 412 /* 413 * Now we can look at the time, having had a chance to verify the 414 * time from the file system. Pretend that proc0 started now. 415 */ 416 sx_slock(&allproc_lock); 417 LIST_FOREACH(p, &allproc, p_list) { 418 microtime(&p->p_stats->p_start); 419 p->p_runtime.sec = 0; 420 p->p_runtime.frac = 0; 421 } 422 sx_sunlock(&allproc_lock); 423 microuptime(PCPU_PTR(switchtime)); 424 PCPU_SET(switchticks, ticks); 425 426 /* 427 * Give the ``random'' number generator a thump. 428 */ 429 nanotime(&ts); 430 srandom(ts.tv_sec ^ ts.tv_nsec); 431} 432SYSINIT(p0post, SI_SUB_INTRINSIC_POST, SI_ORDER_FIRST, proc0_post, NULL) 433 434/* 435 *************************************************************************** 436 **** 437 **** The following SYSINIT's and glue code should be moved to the 438 **** respective files on a per subsystem basis. 439 **** 440 *************************************************************************** 441 */ 442 443 444/* 445 *************************************************************************** 446 **** 447 **** The following code probably belongs in another file, like 448 **** kern/init_init.c. 449 **** 450 *************************************************************************** 451 */ 452 453/* 454 * List of paths to try when searching for "init". 455 */ 456static char init_path[MAXPATHLEN] = 457#ifdef INIT_PATH 458 __XSTRING(INIT_PATH); 459#else 460 "/sbin/init:/sbin/oinit:/sbin/init.bak:/stand/sysinstall"; 461#endif 462SYSCTL_STRING(_kern, OID_AUTO, init_path, CTLFLAG_RD, init_path, 0, 463 "Path used to search the init process"); 464 465/* 466 * Start the initial user process; try exec'ing each pathname in init_path. 467 * The program is invoked with one argument containing the boot flags. 468 */ 469static void 470start_init(void *dummy) 471{ 472 vm_offset_t addr; 473 struct execve_args args; 474 int options, error; 475 char *var, *path, *next, *s; 476 char *ucp, **uap, *arg0, *arg1; 477 struct thread *td; 478 struct proc *p; 479 int init_does_devfs = 0; 480 481 mtx_lock(&Giant); 482 483 GIANT_REQUIRED; 484 485 td = curthread; 486 p = td->td_proc; 487 488 /* Get the vnode for '/'. Set p->p_fd->fd_cdir to reference it. */ 489 if (VFS_ROOT(TAILQ_FIRST(&mountlist), &rootvnode)) 490 panic("cannot find root vnode"); 491 FILEDESC_LOCK(p->p_fd); 492 p->p_fd->fd_cdir = rootvnode; 493 VREF(p->p_fd->fd_cdir); 494 p->p_fd->fd_rdir = rootvnode; 495 VREF(p->p_fd->fd_rdir); 496 FILEDESC_UNLOCK(p->p_fd); 497 VOP_UNLOCK(rootvnode, 0, td); 498 499 if (devfs_present) { 500 /* 501 * For disk based systems, we probably cannot do this yet 502 * since the fs will be read-only. But a NFS root 503 * might be ok. It is worth a shot. 504 */ 505 error = vn_mkdir("/dev", 0700, UIO_SYSSPACE, td); 506 if (error == EEXIST) 507 error = 0; 508 if (error == 0) 509 error = vfs_mount(td, "devfs", "/dev", 0, 0); 510 if (error != 0) 511 init_does_devfs = 1; 512 } 513 514 /* 515 * Need just enough stack to hold the faked-up "execve()" arguments. 516 */ 517 addr = trunc_page(USRSTACK - PAGE_SIZE); 518 if (vm_map_find(&p->p_vmspace->vm_map, NULL, 0, &addr, PAGE_SIZE, 519 FALSE, VM_PROT_ALL, VM_PROT_ALL, 0) != 0) 520 panic("init: couldn't allocate argument space"); 521 p->p_vmspace->vm_maxsaddr = (caddr_t)addr; 522 p->p_vmspace->vm_ssize = 1; 523 524 if ((var = getenv("init_path")) != NULL) { 525 strncpy(init_path, var, sizeof init_path); 526 init_path[sizeof init_path - 1] = 0; 527 } 528 if ((var = getenv("kern.fallback_elf_brand")) != NULL) 529 fallback_elf_brand = strtol(var, NULL, 0); 530 531 for (path = init_path; *path != '\0'; path = next) { 532 while (*path == ':') 533 path++; 534 if (*path == '\0') 535 break; 536 for (next = path; *next != '\0' && *next != ':'; next++) 537 /* nothing */ ; 538 if (bootverbose) 539 printf("start_init: trying %.*s\n", (int)(next - path), 540 path); 541 542 /* 543 * Move out the boot flag argument. 544 */ 545 options = 0; 546 ucp = (char *)USRSTACK; 547 (void)subyte(--ucp, 0); /* trailing zero */ 548 if (boothowto & RB_SINGLE) { 549 (void)subyte(--ucp, 's'); 550 options = 1; 551 } 552#ifdef notyet 553 if (boothowto & RB_FASTBOOT) { 554 (void)subyte(--ucp, 'f'); 555 options = 1; 556 } 557#endif 558 559#ifdef BOOTCDROM 560 (void)subyte(--ucp, 'C'); 561 options = 1; 562#endif 563 if (init_does_devfs) { 564 (void)subyte(--ucp, 'd'); 565 options = 1; 566 } 567 568 if (options == 0) 569 (void)subyte(--ucp, '-'); 570 (void)subyte(--ucp, '-'); /* leading hyphen */ 571 arg1 = ucp; 572 573 /* 574 * Move out the file name (also arg 0). 575 */ 576 (void)subyte(--ucp, 0); 577 for (s = next - 1; s >= path; s--) 578 (void)subyte(--ucp, *s); 579 arg0 = ucp; 580 581 /* 582 * Move out the arg pointers. 583 */ 584 uap = (char **)((intptr_t)ucp & ~(sizeof(intptr_t)-1)); 585 (void)suword((caddr_t)--uap, (long)0); /* terminator */ 586 (void)suword((caddr_t)--uap, (long)(intptr_t)arg1); 587 (void)suword((caddr_t)--uap, (long)(intptr_t)arg0); 588 589 /* 590 * Point at the arguments. 591 */ 592 args.fname = arg0; 593 args.argv = uap; 594 args.envv = NULL; 595 596 /* 597 * Now try to exec the program. If can't for any reason 598 * other than it doesn't exist, complain. 599 * 600 * Otherwise, return via fork_trampoline() all the way 601 * to user mode as init! 602 */ 603 if ((error = execve(td, &args)) == 0) { 604 mtx_unlock(&Giant); 605 return; 606 } 607 if (error != ENOENT) 608 printf("exec %.*s: error %d\n", (int)(next - path), 609 path, error); 610 } 611 printf("init: not found in path %s\n", init_path); 612 panic("no init"); 613} 614 615/* 616 * Like kthread_create(), but runs in it's own address space. 617 * We do this early to reserve pid 1. 618 * 619 * Note special case - do not make it runnable yet. Other work 620 * in progress will change this more. 621 */ 622static void 623create_init(const void *udata __unused) 624{ 625 int error; 626 627 error = fork1(&thread0, RFFDG | RFPROC | RFSTOPPED, &initproc); 628 if (error) 629 panic("cannot fork init: %d\n", error); 630 PROC_LOCK(initproc); 631 initproc->p_flag |= P_SYSTEM; 632 PROC_UNLOCK(initproc); 633 mtx_lock_spin(&sched_lock); 634 initproc->p_sflag |= PS_INMEM; 635 mtx_unlock_spin(&sched_lock); 636 cpu_set_fork_handler(FIRST_THREAD_IN_PROC(initproc), start_init, NULL); 637} 638SYSINIT(init, SI_SUB_CREATE_INIT, SI_ORDER_FIRST, create_init, NULL) 639 640/* 641 * Make it runnable now. 642 */ 643static void 644kick_init(const void *udata __unused) 645{ 646 struct thread *td; 647 648 td = FIRST_THREAD_IN_PROC(initproc); 649 mtx_lock_spin(&sched_lock); 650 initproc->p_stat = SRUN; 651 setrunqueue(FIRST_THREAD_IN_PROC(initproc)); /* XXXKSE */ 652 mtx_unlock_spin(&sched_lock); 653} 654SYSINIT(kickinit, SI_SUB_KTHREAD_INIT, SI_ORDER_FIRST, kick_init, NULL)
| 316 session0.s_count = 1; 317 session0.s_leader = p; 318 319#ifdef __ELF__ 320 p->p_sysent = &elf_freebsd_sysvec; 321#else 322 p->p_sysent = &aout_sysvec; 323#endif 324 325 ke = &proc0.p_kse; /* XXXKSE */ 326 kg = &proc0.p_ksegrp; /* XXXKSE */ 327 p->p_flag = P_SYSTEM; 328 p->p_sflag = PS_INMEM; 329 p->p_stat = SRUN; 330 p->p_ksegrp.kg_nice = NZERO; 331 kg->kg_pri_class = PRI_TIMESHARE; 332 kg->kg_user_pri = PUSER; 333 td->td_priority = PVM; 334 td->td_base_pri = PUSER; 335 336 p->p_peers = 0; 337 p->p_leader = p; 338 339 bcopy("swapper", p->p_comm, sizeof ("swapper")); 340 341 callout_init(&p->p_itcallout, 0); 342 callout_init(&td->td_slpcallout, 1); 343 344 /* Create credentials. */ 345 p->p_ucred = crget(); 346 p->p_ucred->cr_ngroups = 1; /* group 0 */ 347 p->p_ucred->cr_uidinfo = uifind(0); 348 p->p_ucred->cr_ruidinfo = uifind(0); 349 p->p_ucred->cr_prison = NULL; /* Don't jail it. */ 350 td->td_ucred = crhold(p->p_ucred); 351 352 /* Create procsig. */ 353 p->p_procsig = &procsig0; 354 p->p_procsig->ps_refcnt = 1; 355 356 /* Initialize signal state for process 0. */ 357 siginit(&proc0); 358 359 /* Create the file descriptor table. */ 360 fdp = &filedesc0; 361 p->p_fd = &fdp->fd_fd; 362 mtx_init(&fdp->fd_fd.fd_mtx, "struct filedesc", MTX_DEF); 363 fdp->fd_fd.fd_refcnt = 1; 364 fdp->fd_fd.fd_cmask = cmask; 365 fdp->fd_fd.fd_ofiles = fdp->fd_dfiles; 366 fdp->fd_fd.fd_ofileflags = fdp->fd_dfileflags; 367 fdp->fd_fd.fd_nfiles = NDFILE; 368 369 /* Create the limits structures. */ 370 p->p_limit = &limit0; 371 for (i = 0; i < sizeof(p->p_rlimit)/sizeof(p->p_rlimit[0]); i++) 372 limit0.pl_rlimit[i].rlim_cur = 373 limit0.pl_rlimit[i].rlim_max = RLIM_INFINITY; 374 limit0.pl_rlimit[RLIMIT_NOFILE].rlim_cur = 375 limit0.pl_rlimit[RLIMIT_NOFILE].rlim_max = maxfiles; 376 limit0.pl_rlimit[RLIMIT_NPROC].rlim_cur = 377 limit0.pl_rlimit[RLIMIT_NPROC].rlim_max = maxproc; 378 i = ptoa(cnt.v_free_count); 379 limit0.pl_rlimit[RLIMIT_RSS].rlim_max = i; 380 limit0.pl_rlimit[RLIMIT_MEMLOCK].rlim_max = i; 381 limit0.pl_rlimit[RLIMIT_MEMLOCK].rlim_cur = i / 3; 382 limit0.p_cpulimit = RLIM_INFINITY; 383 limit0.p_refcnt = 1; 384 385 /* Allocate a prototype map so we have something to fork. */ 386 pmap_pinit0(vmspace_pmap(&vmspace0)); 387 p->p_vmspace = &vmspace0; 388 vmspace0.vm_refcnt = 1; 389 vm_map_init(&vmspace0.vm_map, round_page(VM_MIN_ADDRESS), 390 trunc_page(VM_MAXUSER_ADDRESS)); 391 vmspace0.vm_map.pmap = vmspace_pmap(&vmspace0); 392 393 /* 394 * We continue to place resource usage info and signal 395 * actions in the user struct so they're pageable. 396 */ 397 p->p_stats = &p->p_uarea->u_stats; 398 p->p_sigacts = &p->p_uarea->u_sigacts; 399 400 /* 401 * Charge root for one process. 402 */ 403 (void)chgproccnt(p->p_ucred->cr_ruidinfo, 1, 0); 404} 405SYSINIT(p0init, SI_SUB_INTRINSIC, SI_ORDER_FIRST, proc0_init, NULL) 406 407/* ARGSUSED*/ 408static void 409proc0_post(void *dummy __unused) 410{ 411 struct timespec ts; 412 struct proc *p; 413 414 /* 415 * Now we can look at the time, having had a chance to verify the 416 * time from the file system. Pretend that proc0 started now. 417 */ 418 sx_slock(&allproc_lock); 419 LIST_FOREACH(p, &allproc, p_list) { 420 microtime(&p->p_stats->p_start); 421 p->p_runtime.sec = 0; 422 p->p_runtime.frac = 0; 423 } 424 sx_sunlock(&allproc_lock); 425 microuptime(PCPU_PTR(switchtime)); 426 PCPU_SET(switchticks, ticks); 427 428 /* 429 * Give the ``random'' number generator a thump. 430 */ 431 nanotime(&ts); 432 srandom(ts.tv_sec ^ ts.tv_nsec); 433} 434SYSINIT(p0post, SI_SUB_INTRINSIC_POST, SI_ORDER_FIRST, proc0_post, NULL) 435 436/* 437 *************************************************************************** 438 **** 439 **** The following SYSINIT's and glue code should be moved to the 440 **** respective files on a per subsystem basis. 441 **** 442 *************************************************************************** 443 */ 444 445 446/* 447 *************************************************************************** 448 **** 449 **** The following code probably belongs in another file, like 450 **** kern/init_init.c. 451 **** 452 *************************************************************************** 453 */ 454 455/* 456 * List of paths to try when searching for "init". 457 */ 458static char init_path[MAXPATHLEN] = 459#ifdef INIT_PATH 460 __XSTRING(INIT_PATH); 461#else 462 "/sbin/init:/sbin/oinit:/sbin/init.bak:/stand/sysinstall"; 463#endif 464SYSCTL_STRING(_kern, OID_AUTO, init_path, CTLFLAG_RD, init_path, 0, 465 "Path used to search the init process"); 466 467/* 468 * Start the initial user process; try exec'ing each pathname in init_path. 469 * The program is invoked with one argument containing the boot flags. 470 */ 471static void 472start_init(void *dummy) 473{ 474 vm_offset_t addr; 475 struct execve_args args; 476 int options, error; 477 char *var, *path, *next, *s; 478 char *ucp, **uap, *arg0, *arg1; 479 struct thread *td; 480 struct proc *p; 481 int init_does_devfs = 0; 482 483 mtx_lock(&Giant); 484 485 GIANT_REQUIRED; 486 487 td = curthread; 488 p = td->td_proc; 489 490 /* Get the vnode for '/'. Set p->p_fd->fd_cdir to reference it. */ 491 if (VFS_ROOT(TAILQ_FIRST(&mountlist), &rootvnode)) 492 panic("cannot find root vnode"); 493 FILEDESC_LOCK(p->p_fd); 494 p->p_fd->fd_cdir = rootvnode; 495 VREF(p->p_fd->fd_cdir); 496 p->p_fd->fd_rdir = rootvnode; 497 VREF(p->p_fd->fd_rdir); 498 FILEDESC_UNLOCK(p->p_fd); 499 VOP_UNLOCK(rootvnode, 0, td); 500 501 if (devfs_present) { 502 /* 503 * For disk based systems, we probably cannot do this yet 504 * since the fs will be read-only. But a NFS root 505 * might be ok. It is worth a shot. 506 */ 507 error = vn_mkdir("/dev", 0700, UIO_SYSSPACE, td); 508 if (error == EEXIST) 509 error = 0; 510 if (error == 0) 511 error = vfs_mount(td, "devfs", "/dev", 0, 0); 512 if (error != 0) 513 init_does_devfs = 1; 514 } 515 516 /* 517 * Need just enough stack to hold the faked-up "execve()" arguments. 518 */ 519 addr = trunc_page(USRSTACK - PAGE_SIZE); 520 if (vm_map_find(&p->p_vmspace->vm_map, NULL, 0, &addr, PAGE_SIZE, 521 FALSE, VM_PROT_ALL, VM_PROT_ALL, 0) != 0) 522 panic("init: couldn't allocate argument space"); 523 p->p_vmspace->vm_maxsaddr = (caddr_t)addr; 524 p->p_vmspace->vm_ssize = 1; 525 526 if ((var = getenv("init_path")) != NULL) { 527 strncpy(init_path, var, sizeof init_path); 528 init_path[sizeof init_path - 1] = 0; 529 } 530 if ((var = getenv("kern.fallback_elf_brand")) != NULL) 531 fallback_elf_brand = strtol(var, NULL, 0); 532 533 for (path = init_path; *path != '\0'; path = next) { 534 while (*path == ':') 535 path++; 536 if (*path == '\0') 537 break; 538 for (next = path; *next != '\0' && *next != ':'; next++) 539 /* nothing */ ; 540 if (bootverbose) 541 printf("start_init: trying %.*s\n", (int)(next - path), 542 path); 543 544 /* 545 * Move out the boot flag argument. 546 */ 547 options = 0; 548 ucp = (char *)USRSTACK; 549 (void)subyte(--ucp, 0); /* trailing zero */ 550 if (boothowto & RB_SINGLE) { 551 (void)subyte(--ucp, 's'); 552 options = 1; 553 } 554#ifdef notyet 555 if (boothowto & RB_FASTBOOT) { 556 (void)subyte(--ucp, 'f'); 557 options = 1; 558 } 559#endif 560 561#ifdef BOOTCDROM 562 (void)subyte(--ucp, 'C'); 563 options = 1; 564#endif 565 if (init_does_devfs) { 566 (void)subyte(--ucp, 'd'); 567 options = 1; 568 } 569 570 if (options == 0) 571 (void)subyte(--ucp, '-'); 572 (void)subyte(--ucp, '-'); /* leading hyphen */ 573 arg1 = ucp; 574 575 /* 576 * Move out the file name (also arg 0). 577 */ 578 (void)subyte(--ucp, 0); 579 for (s = next - 1; s >= path; s--) 580 (void)subyte(--ucp, *s); 581 arg0 = ucp; 582 583 /* 584 * Move out the arg pointers. 585 */ 586 uap = (char **)((intptr_t)ucp & ~(sizeof(intptr_t)-1)); 587 (void)suword((caddr_t)--uap, (long)0); /* terminator */ 588 (void)suword((caddr_t)--uap, (long)(intptr_t)arg1); 589 (void)suword((caddr_t)--uap, (long)(intptr_t)arg0); 590 591 /* 592 * Point at the arguments. 593 */ 594 args.fname = arg0; 595 args.argv = uap; 596 args.envv = NULL; 597 598 /* 599 * Now try to exec the program. If can't for any reason 600 * other than it doesn't exist, complain. 601 * 602 * Otherwise, return via fork_trampoline() all the way 603 * to user mode as init! 604 */ 605 if ((error = execve(td, &args)) == 0) { 606 mtx_unlock(&Giant); 607 return; 608 } 609 if (error != ENOENT) 610 printf("exec %.*s: error %d\n", (int)(next - path), 611 path, error); 612 } 613 printf("init: not found in path %s\n", init_path); 614 panic("no init"); 615} 616 617/* 618 * Like kthread_create(), but runs in it's own address space. 619 * We do this early to reserve pid 1. 620 * 621 * Note special case - do not make it runnable yet. Other work 622 * in progress will change this more. 623 */ 624static void 625create_init(const void *udata __unused) 626{ 627 int error; 628 629 error = fork1(&thread0, RFFDG | RFPROC | RFSTOPPED, &initproc); 630 if (error) 631 panic("cannot fork init: %d\n", error); 632 PROC_LOCK(initproc); 633 initproc->p_flag |= P_SYSTEM; 634 PROC_UNLOCK(initproc); 635 mtx_lock_spin(&sched_lock); 636 initproc->p_sflag |= PS_INMEM; 637 mtx_unlock_spin(&sched_lock); 638 cpu_set_fork_handler(FIRST_THREAD_IN_PROC(initproc), start_init, NULL); 639} 640SYSINIT(init, SI_SUB_CREATE_INIT, SI_ORDER_FIRST, create_init, NULL) 641 642/* 643 * Make it runnable now. 644 */ 645static void 646kick_init(const void *udata __unused) 647{ 648 struct thread *td; 649 650 td = FIRST_THREAD_IN_PROC(initproc); 651 mtx_lock_spin(&sched_lock); 652 initproc->p_stat = SRUN; 653 setrunqueue(FIRST_THREAD_IN_PROC(initproc)); /* XXXKSE */ 654 mtx_unlock_spin(&sched_lock); 655} 656SYSINIT(kickinit, SI_SUB_KTHREAD_INIT, SI_ORDER_FIRST, kick_init, NULL)
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