diff options
Diffstat (limited to 'sys-utils/dmesg.c')
| -rw-r--r-- | sys-utils/dmesg.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/sys-utils/dmesg.c b/sys-utils/dmesg.c index a53f49140..50b073f3f 100644 --- a/sys-utils/dmesg.c +++ b/sys-utils/dmesg.c @@ -133,7 +133,7 @@ int main(int argc, char *argv[]) int n; int c; int console_level = 0; - int cmd = SYSLOG_ACTION_READ_ALL; + int cmd = -1; int flags = 0; static const struct option longopts[] = { @@ -152,6 +152,12 @@ int main(int argc, char *argv[]) textdomain(PACKAGE); while ((c = getopt_long(argc, argv, "Cchrn:s:V", longopts, NULL)) != -1) { + + if (cmd != -1 && strchr("Ccn", c)) + errx(EXIT_FAILURE, "%s %s", + "--{clear,read-clear,console-level}", + _("options are mutually exclusive")); + switch (c) { case 'C': cmd = SYSLOG_ACTION_CLEAR; @@ -168,7 +174,8 @@ int main(int argc, char *argv[]) flags |= DMESG_FL_RAW; break; case 's': - bufsize = strtol_or_err(optarg, _("failed to parse buffer size")); + bufsize = strtol_or_err(optarg, + _("failed to parse buffer size")); if (bufsize < 4096) bufsize = 4096; break; @@ -190,6 +197,9 @@ int main(int argc, char *argv[]) if (argc > 1) usage(stderr); + if (cmd == -1) + cmd = SYSLOG_ACTION_READ_ALL; /* default */ + switch (cmd) { case SYSLOG_ACTION_READ_ALL: case SYSLOG_ACTION_READ_CLEAR: |