| gcore.c (50477) | gcore.c (69896) |
|---|---|
| 1/*- 2 * Copyright (c) 1992, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 28 unchanged lines hidden (view full) --- 37 The Regents of the University of California. All rights reserved.\n"; 38#endif /* not lint */ 39 40#ifndef lint 41#if 0 42static char sccsid[] = "@(#)gcore.c 8.2 (Berkeley) 9/23/93"; 43#endif 44static const char rcsid[] = | 1/*- 2 * Copyright (c) 1992, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 28 unchanged lines hidden (view full) --- 37 The Regents of the University of California. All rights reserved.\n"; 38#endif /* not lint */ 39 40#ifndef lint 41#if 0 42static char sccsid[] = "@(#)gcore.c 8.2 (Berkeley) 9/23/93"; 43#endif 44static const char rcsid[] = |
| 45 "$FreeBSD: head/usr.bin/gcore/gcore.c 50477 1999-08-28 01:08:13Z peter $"; | 45 "$FreeBSD: head/usr.bin/gcore/gcore.c 69896 2000-12-12 07:25:57Z mckusick $"; |
| 46#endif /* not lint */ 47 48/* 49 * Originally written by Eric Cooper in Fall 1981. 50 * Inspired by a version 6 program by Len Levin, 1978. 51 * Several pieces of code lifted from Bill Joy's 4BSD ps. 52 * Most recently, hacked beyond recognition for 4.4BSD by Steven McCanne, 53 * Lawrence Berkeley Laboratory. --- 21 unchanged lines hidden (view full) --- 75#include <stdio.h> 76#include <stdlib.h> 77#include <string.h> 78#include <unistd.h> 79 80#include "extern.h" 81 82static void core __P((int, int, struct kinfo_proc *)); | 46#endif /* not lint */ 47 48/* 49 * Originally written by Eric Cooper in Fall 1981. 50 * Inspired by a version 6 program by Len Levin, 1978. 51 * Several pieces of code lifted from Bill Joy's 4BSD ps. 52 * Most recently, hacked beyond recognition for 4.4BSD by Steven McCanne, 53 * Lawrence Berkeley Laboratory. --- 21 unchanged lines hidden (view full) --- 75#include <stdio.h> 76#include <stdlib.h> 77#include <string.h> 78#include <unistd.h> 79 80#include "extern.h" 81 82static void core __P((int, int, struct kinfo_proc *)); |
| 83static void datadump __P((int, int, struct proc *, u_long, int)); | 83static void datadump __P((int, int, struct kinfo_proc *, u_long, int)); |
| 84static void killed __P((int)); 85static void restart_target __P((void)); 86static void usage __P((void)) __dead2; | 84static void killed __P((int)); 85static void restart_target __P((void)); 86static void usage __P((void)) __dead2; |
| 87static void userdump __P((int, struct proc *, u_long, int)); | 87static void userdump __P((int, struct kinfo_proc *, u_long, int)); |
| 88 89kvm_t *kd; | 88 89kvm_t *kd; |
| 90/* XXX undocumented routine, should be in kvm.h? */ 91ssize_t kvm_uread __P((kvm_t *, const struct proc *, u_long, char *, size_t)); | |
| 92 93static int data_offset; 94static pid_t pid; 95 96int 97main(argc, argv) 98 int argc; 99 char *argv[]; 100{ | 90 91static int data_offset; 92static pid_t pid; 93 94int 95main(argc, argv) 96 int argc; 97 char *argv[]; 98{ |
| 101 register struct proc *p; | |
| 102 struct kinfo_proc *ki = NULL; 103 struct exec exec; 104 int ch, cnt, efd, fd, sflag, uid; 105 char *binfile, *corefile; 106 char errbuf[_POSIX2_LINE_MAX], fname[MAXPATHLEN + 1]; 107 int is_aout; 108 109 sflag = 0; --- 49 unchanged lines hidden (view full) --- 159 errx(1, "%s", errbuf); 160 161 uid = getuid(); 162 163 ki = kvm_getprocs(kd, KERN_PROC_PID, pid, &cnt); 164 if (ki == NULL || cnt != 1) 165 errx(1, "%d: not found", pid); 166 | 99 struct kinfo_proc *ki = NULL; 100 struct exec exec; 101 int ch, cnt, efd, fd, sflag, uid; 102 char *binfile, *corefile; 103 char errbuf[_POSIX2_LINE_MAX], fname[MAXPATHLEN + 1]; 104 int is_aout; 105 106 sflag = 0; --- 49 unchanged lines hidden (view full) --- 156 errx(1, "%s", errbuf); 157 158 uid = getuid(); 159 160 ki = kvm_getprocs(kd, KERN_PROC_PID, pid, &cnt); 161 if (ki == NULL || cnt != 1) 162 errx(1, "%d: not found", pid); 163 |
| 167 p = &ki->kp_proc; 168 if (ki->kp_eproc.e_pcred.p_ruid != uid && uid != 0) | 164 if (ki->ki_ruid != uid && uid != 0) |
| 169 errx(1, "%d: not owner", pid); 170 | 165 errx(1, "%d: not owner", pid); 166 |
| 171 if (p->p_stat == SZOMB) | 167 if (ki->ki_stat == SZOMB) |
| 172 errx(1, "%d: zombie", pid); 173 | 168 errx(1, "%d: zombie", pid); 169 |
| 174 if (p->p_flag & P_WEXIT) | 170 if (ki->ki_flag & P_WEXIT) |
| 175 errx(1, "%d: process exiting", pid); | 171 errx(1, "%d: process exiting", pid); |
| 176 if (p->p_flag & P_SYSTEM) /* Swapper or pagedaemon. */ | 172 if (ki->ki_flag & P_SYSTEM) /* Swapper or pagedaemon. */ |
| 177 errx(1, "%d: system process", pid); | 173 errx(1, "%d: system process", pid); |
| 178 if (exec.a_text != ptoa(ki->kp_eproc.e_vm.vm_tsize)) | 174 if (exec.a_text != ptoa(ki->ki_tsize)) |
| 179 errx(1, "The executable %s does not belong to" 180 " process %d!\n" 181 "Text segment size (in bytes): executable %ld," 182 " process %d", binfile, pid, exec.a_text, | 175 errx(1, "The executable %s does not belong to" 176 " process %d!\n" 177 "Text segment size (in bytes): executable %ld," 178 " process %d", binfile, pid, exec.a_text, |
| 183 ptoa(ki->kp_eproc.e_vm.vm_tsize)); | 179 ptoa(ki->ki_tsize)); |
| 184 data_offset = N_DATOFF(exec); 185 } else if (IS_ELF(*(Elf_Ehdr *)&exec)) { 186 is_aout = 0; 187 close(efd); 188 } else 189 errx(1, "Invalid executable file"); 190 191 if (corefile == NULL) { --- 31 unchanged lines hidden (view full) --- 223 int efd; 224 int fd; 225 struct kinfo_proc *ki; 226{ 227 union { 228 struct user user; 229 char ubytes[ctob(UPAGES)]; 230 } uarea; | 180 data_offset = N_DATOFF(exec); 181 } else if (IS_ELF(*(Elf_Ehdr *)&exec)) { 182 is_aout = 0; 183 close(efd); 184 } else 185 errx(1, "Invalid executable file"); 186 187 if (corefile == NULL) { --- 31 unchanged lines hidden (view full) --- 219 int efd; 220 int fd; 221 struct kinfo_proc *ki; 222{ 223 union { 224 struct user user; 225 char ubytes[ctob(UPAGES)]; 226 } uarea; |
| 231 struct proc *p = &ki->kp_proc; 232 int tsize = ki->kp_eproc.e_vm.vm_tsize; 233 int dsize = ki->kp_eproc.e_vm.vm_dsize; 234 int ssize = ki->kp_eproc.e_vm.vm_ssize; | 227 int tsize = ki->ki_tsize; 228 int dsize = ki->ki_dsize; 229 int ssize = ki->ki_ssize; |
| 235 int cnt; 236 237 /* Read in user struct */ | 230 int cnt; 231 232 /* Read in user struct */ |
| 238 cnt = kvm_read(kd, (u_long)p->p_addr, &uarea, sizeof(uarea)); | 233 cnt = kvm_read(kd, (u_long)ki->ki_addr, &uarea, sizeof(uarea)); |
| 239 if (cnt != sizeof(uarea)) 240 errx(1, "read user structure: %s", 241 cnt > 0 ? strerror(EIO) : strerror(errno)); 242 243 /* 244 * Fill in the eproc vm parameters, since these are garbage unless 245 * the kernel is dumping core or something. 246 */ 247 uarea.user.u_kproc = *ki; 248 249 /* Dump user area */ 250 cnt = write(fd, &uarea, sizeof(uarea)); 251 if (cnt != sizeof(uarea)) 252 errx(1, "write user structure: %s", 253 cnt > 0 ? strerror(EIO) : strerror(errno)); 254 255 /* Dump data segment */ | 234 if (cnt != sizeof(uarea)) 235 errx(1, "read user structure: %s", 236 cnt > 0 ? strerror(EIO) : strerror(errno)); 237 238 /* 239 * Fill in the eproc vm parameters, since these are garbage unless 240 * the kernel is dumping core or something. 241 */ 242 uarea.user.u_kproc = *ki; 243 244 /* Dump user area */ 245 cnt = write(fd, &uarea, sizeof(uarea)); 246 if (cnt != sizeof(uarea)) 247 errx(1, "write user structure: %s", 248 cnt > 0 ? strerror(EIO) : strerror(errno)); 249 250 /* Dump data segment */ |
| 256 datadump(efd, fd, p, USRTEXT + ctob(tsize), dsize); | 251 datadump(efd, fd, ki, USRTEXT + ctob(tsize), dsize); |
| 257 258 /* Dump stack segment */ | 252 253 /* Dump stack segment */ |
| 259 userdump(fd, p, USRSTACK - ctob(ssize), ssize); | 254 userdump(fd, ki, USRSTACK - ctob(ssize), ssize); |
| 260 261 /* Dump machine dependent portions of the core. */ 262 md_core(kd, fd, ki); 263} 264 265void | 255 256 /* Dump machine dependent portions of the core. */ 257 md_core(kd, fd, ki); 258} 259 260void |
| 266datadump(efd, fd, p, addr, npage) | 261datadump(efd, fd, kp, addr, npage) |
| 267 register int efd; 268 register int fd; | 262 register int efd; 263 register int fd; |
| 269 struct proc *p; | 264 struct kinfo_proc *kp; |
| 270 register u_long addr; 271 register int npage; 272{ 273 register int cc, delta; 274 char buffer[PAGE_SIZE]; 275 276 delta = data_offset - addr; 277 while (--npage >= 0) { | 265 register u_long addr; 266 register int npage; 267{ 268 register int cc, delta; 269 char buffer[PAGE_SIZE]; 270 271 delta = data_offset - addr; 272 while (--npage >= 0) { |
| 278 cc = kvm_uread(kd, p, addr, buffer, PAGE_SIZE); | 273 cc = kvm_uread(kd, kp, addr, buffer, PAGE_SIZE); |
| 279 if (cc != PAGE_SIZE) { 280 /* Try to read the page from the executable. */ 281 if (lseek(efd, (off_t)addr + delta, SEEK_SET) == -1) 282 err(1, "seek executable: %s", strerror(errno)); 283 cc = read(efd, buffer, sizeof(buffer)); 284 if (cc != sizeof(buffer)) { 285 if (cc < 0) 286 err(1, "read executable"); --- 20 unchanged lines hidden (view full) --- 307 308static void 309restart_target() 310{ 311 kill(pid, SIGCONT); 312} 313 314void | 274 if (cc != PAGE_SIZE) { 275 /* Try to read the page from the executable. */ 276 if (lseek(efd, (off_t)addr + delta, SEEK_SET) == -1) 277 err(1, "seek executable: %s", strerror(errno)); 278 cc = read(efd, buffer, sizeof(buffer)); 279 if (cc != sizeof(buffer)) { 280 if (cc < 0) 281 err(1, "read executable"); --- 20 unchanged lines hidden (view full) --- 302 303static void 304restart_target() 305{ 306 kill(pid, SIGCONT); 307} 308 309void |
| 315userdump(fd, p, addr, npage) | 310userdump(fd, kp, addr, npage) |
| 316 register int fd; | 311 register int fd; |
| 317 struct proc *p; | 312 struct kinfo_proc *kp; |
| 318 register u_long addr; 319 register int npage; 320{ 321 register int cc; 322 char buffer[PAGE_SIZE]; 323 324 while (--npage >= 0) { | 313 register u_long addr; 314 register int npage; 315{ 316 register int cc; 317 char buffer[PAGE_SIZE]; 318 319 while (--npage >= 0) { |
| 325 cc = kvm_uread(kd, p, addr, buffer, PAGE_SIZE); | 320 cc = kvm_uread(kd, kp, addr, buffer, PAGE_SIZE); |
| 326 if (cc != PAGE_SIZE) 327 /* Could be an untouched fill-with-zero page. */ 328 bzero(buffer, PAGE_SIZE); 329 cc = write(fd, buffer, PAGE_SIZE); 330 if (cc != PAGE_SIZE) 331 errx(1, "write stack segment: %s", 332 cc > 0 ? strerror(EIO) : strerror(errno)); 333 addr += PAGE_SIZE; 334 } 335} 336 337void 338usage() 339{ 340 (void)fprintf(stderr, "usage: gcore [-s] [-c core] executable pid\n"); 341 exit(1); 342} | 321 if (cc != PAGE_SIZE) 322 /* Could be an untouched fill-with-zero page. */ 323 bzero(buffer, PAGE_SIZE); 324 cc = write(fd, buffer, PAGE_SIZE); 325 if (cc != PAGE_SIZE) 326 errx(1, "write stack segment: %s", 327 cc > 0 ? strerror(EIO) : strerror(errno)); 328 addr += PAGE_SIZE; 329 } 330} 331 332void 333usage() 334{ 335 (void)fprintf(stderr, "usage: gcore [-s] [-c core] executable pid\n"); 336 exit(1); 337} |