diff options
Diffstat (limited to 'usr.bin/ktrace/ktrace.c')
| -rw-r--r-- | usr.bin/ktrace/ktrace.c | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/usr.bin/ktrace/ktrace.c b/usr.bin/ktrace/ktrace.c new file mode 100644 index 0000000..26606d7 --- /dev/null +++ b/usr.bin/ktrace/ktrace.c @@ -0,0 +1,176 @@ +/*- + * Copyright (c) 1988, 1993 + * 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 +static char copyright[] = +"@(#) Copyright (c) 1988, 1993\n\ + The Regents of the University of California. All rights reserved.\n"; +#endif /* not lint */ + +#ifndef lint +static char sccsid[] = "@(#)ktrace.c 8.1 (Berkeley) 6/6/93"; +#endif /* not lint */ + +#include <sys/param.h> +#include <sys/stat.h> +#include <sys/file.h> +#include <sys/time.h> +#include <sys/errno.h> +#include <sys/uio.h> +#include <sys/ktrace.h> +#include <stdio.h> +#include "ktrace.h" + +main(argc, argv) + int argc; + char **argv; +{ + extern int optind; + extern char *optarg; + enum { NOTSET, CLEAR, CLEARALL } clear; + int append, ch, fd, inherit, ops, pid, pidset, trpoints; + char *tracefile; + + clear = NOTSET; + append = ops = pidset = inherit = 0; + trpoints = DEF_POINTS; + tracefile = DEF_TRACEFILE; + while ((ch = getopt(argc,argv,"aCcdf:g:ip:t:")) != EOF) + switch((char)ch) { + case 'a': + append = 1; + break; + case 'C': + clear = CLEARALL; + pidset = 1; + break; + case 'c': + clear = CLEAR; + break; + case 'd': + ops |= KTRFLAG_DESCEND; + break; + case 'f': + tracefile = optarg; + break; + case 'g': + pid = -rpid(optarg); + pidset = 1; + break; + case 'i': + inherit = 1; + break; + case 'p': + pid = rpid(optarg); + pidset = 1; + break; + case 't': + trpoints = getpoints(optarg); + if (trpoints < 0) { + (void)fprintf(stderr, + "ktrace: unknown facility in %s\n", optarg); + usage(); + } + break; + default: + usage(); + } + argv += optind; + argc -= optind; + + if (pidset && *argv || !pidset && !*argv) + usage(); + + if (inherit) + trpoints |= KTRFAC_INHERIT; + + if (clear != NOTSET) { + if (clear == CLEARALL) { + ops = KTROP_CLEAR | KTRFLAG_DESCEND; + trpoints = ALL_POINTS; + pid = 1; + } else + ops |= pid ? KTROP_CLEAR : KTROP_CLEARFILE; + + if (ktrace(tracefile, ops, trpoints, pid) < 0) + error(tracefile); + exit(0); + } + + if ((fd = open(tracefile, O_CREAT | O_WRONLY | (append ? 0 : O_TRUNC), + DEFFILEMODE)) < 0) + error(tracefile); + (void)close(fd); + + if (*argv) { + if (ktrace(tracefile, ops, trpoints, getpid()) < 0) + error(); + execvp(argv[0], &argv[0]); + error(argv[0]); + exit(1); + } + else if (ktrace(tracefile, ops, trpoints, pid) < 0) + error(tracefile); + exit(0); +} + +rpid(p) + char *p; +{ + static int first; + + if (first++) { + (void)fprintf(stderr, + "ktrace: only one -g or -p flag is permitted.\n"); + usage(); + } + if (!*p) { + (void)fprintf(stderr, "ktrace: illegal process id.\n"); + usage(); + } + return(atoi(p)); +} + +error(name) + char *name; +{ + (void)fprintf(stderr, "ktrace: %s: %s.\n", name, strerror(errno)); + exit(1); +} + +usage() +{ + (void)fprintf(stderr, +"usage:\tktrace [-aCcid] [-f trfile] [-g pgid] [-p pid] [-t [acgn]\n\tktrace [-aCcid] [-f trfile] [-t [acgn] command\n"); + exit(1); +} |
