diff options
Diffstat (limited to 'usr.sbin/btrace/btrace.c')
| -rw-r--r-- | usr.sbin/btrace/btrace.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/usr.sbin/btrace/btrace.c b/usr.sbin/btrace/btrace.c index 992215f172c..8c9b04ca17f 100644 --- a/usr.sbin/btrace/btrace.c +++ b/usr.sbin/btrace/btrace.c @@ -1,4 +1,4 @@ -/* $OpenBSD: btrace.c,v 1.29 2021/02/08 09:46:45 mpi Exp $ */ +/* $OpenBSD: btrace.c,v 1.30 2021/03/21 01:24:35 jmatthew Exp $ */ /* * Copyright (c) 2019 - 2020 Martin Pieuchot <mpi@openbsd.org> @@ -124,7 +124,7 @@ main(int argc, char *argv[]) int fd = -1, ch, error = 0; const char *filename = NULL, *btscript = NULL; const char *errstr; - int showprobes = 0, tracepid = -1; + int showprobes = 0, tracepid = -1, noaction = 0; setlocale(LC_ALL, ""); @@ -133,7 +133,7 @@ main(int argc, char *argv[]) err(1, "pledge"); #endif - while ((ch = getopt(argc, argv, "e:lp:v")) != -1) { + while ((ch = getopt(argc, argv, "e:lnp:v")) != -1) { switch (ch) { case 'e': btscript = optarg; @@ -141,6 +141,9 @@ main(int argc, char *argv[]) case 'l': showprobes = 1; break; + case 'n': + noaction = 1; + break; case 'p': if (tracepid != -1) usage(); @@ -178,6 +181,9 @@ main(int argc, char *argv[]) return error; } + if (noaction) + return error; + if (showprobes || g_nprobes > 0) { fd = open(__PATH_DEVDT, O_RDONLY); if (fd == -1) @@ -201,7 +207,7 @@ main(int argc, char *argv[]) __dead void usage(void) { - fprintf(stderr, "usage: %s [-lv] [-p pid] [-e program|file]\n", + fprintf(stderr, "usage: %s [-lnv] [-p pid] [-e program | file]\n", getprogname()); exit(1); } |