| [ CnUnix ] in KIDS 글 쓴 이(By): pictor (홍헌수) 날 짜 (Date): 1997년02월24일(월) 14시01분39초 KST 제 목(Title): [Re][Re] dmesg(8) /* * dmesg source code: BSD dmesg를 sunos.4.1.3에 맞게 조금, 아주 조금 바꾼 * 것입니다. sunos.4.1.3에서만 돌아갈 것 같습니다. permission이 조금 문제 * 될 것입니다. * source중에서 제가 조금 바꾼 것들은 kvm_???()부분하고, / * hunsoo * / * 라고 해놓은 부분입니다. dmesg는 마치 w처럼, ps처럼 kernel을 읽는 것이었 * 습니다.---1997/2/ */ /*- * Copyright (c) 1991 The Regents of the University of California. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef lint char copyright[] = "@(#) Copyright (c) 1991 The Regents of the University of California.\n\ All rights reserved.\n"; #endif /* not lint */ #ifndef lint static char sccsid[] = "@(#)dmesg.c 5.9 (Berkeley) 5/2/91"; #endif /* not lint */ #define KERNEL /* hunsoo */ #if hunsoo #include <sys/cdefs.h> /* hunsoo: I think you do not have this file */ #endif #include <sun4c/param.h> /* hunsoo */ #include <sys/msgbuf.h> #include <time.h> #include <nlist.h> #include <kvm.h> #include <stdlib.h> #include <stdio.h> #include <ctype.h> #include <fcntl.h> static struct nlist nl[] = { #define X_MSGBUF 0 { "_msgbuf" }, { NULL }, }; void usage(), vputc(); #if hunsoo void err __P((const char *, ...)); #else void err(const char *,...); #endif kvm_t *kd; /* hunsoo */ main(argc, argv) int argc; char **argv; { register int ch, newl, skip; register char *p, *ep; struct msgbuf cur; char *core, *namelist; extern char *optarg; /* hunsoo */ extern int optind; /* hunsoo */ core = namelist = NULL; while ((ch = getopt(argc, argv, "M:N:")) != EOF) switch(ch) { case 'M': core = optarg; break; case 'N': namelist = optarg; break; case '?': default: usage(); } argc -= optind; argv += optind; /* Read in kernel message buffer, do sanity checks. */ if ((kd = kvm_open(namelist, core, NULL, O_RDONLY, "kvm_open")) == NULL) perror("kvm_open"), exit(1); if (kvm_nlist(kd, nl) < 0) perror("kvm_open"), exit(2); if (nl[X_MSGBUF].n_type == 0) err("msgbuf not found namelist"); kvm_read(kd, (void *)nl[X_MSGBUF].n_value, (void *)&cur, sizeof(cur)); if (cur.msg_magic != MSG_MAGIC) err("magic number incorrect"); if (cur.msg_bufx >= MSG_BSIZE) cur.msg_bufx = 0; /* * The message buffer is circular; start at the read pointer, and * go to the write pointer - 1. */ p = cur.msg_bufc + cur.msg_bufx; ep = cur.msg_bufc + cur.msg_bufx - 1; for (newl = skip = 0; p != ep; ++p) { if (p == cur.msg_bufc + MSG_BSIZE) p = cur.msg_bufc; ch = *p; /* Skip "\n<.*>" syslog sequences. */ if (skip) { if (ch == '>') newl = skip = 0; continue; } if (newl && ch == '<') { skip = 1; continue; } if (ch == '\0') continue; newl = (ch = *p) == '\n'; vputc(ch); } if (!newl) (void)putchar('\n'); exit(0); } void vputc(ch) register int ch; { int meta; if (!isascii(ch)) { (void)putchar('M'); (void)putchar('-'); ch = toascii(ch); meta = 1; } else meta = 0; if (isprint(ch) || !meta && (ch == ' ' || ch == '\t' || ch == '\n')) (void)putchar(ch); else { (void)putchar('^'); (void)putchar(ch == '\177' ? '?' : ch | 0100); } } #if __STDC__ #include <stdarg.h> #else #include <varargs.h> #endif void #if __STDC__ err(const char *fmt, ...) #else err(fmt, va_alist) char *fmt; va_dcl #endif { va_list ap; #if __STDC__ va_start(ap, fmt); #else va_start(ap); #endif (void)fprintf(stderr, "dmesg: "); (void)vfprintf(stderr, fmt, ap); va_end(ap); (void)fprintf(stderr, "\n"); exit(1); /* NOTREACHED */ } void usage() { (void)fprintf(stderr, "usage: dmesg [-M core] [-N system]\n"); exit(1); } |