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From e6c69762f5f555fa17659e3440d8392b6a47bbc6 Mon Sep 17 00:00:00 2001
From: Oskari Pirhonen <xxc3ncoredxx@gmail.com>
Date: Mon, 8 Nov 2021 18:44:25 -0600
Subject: [PATCH] Improved commandline help
Output the descriptions of the commandline options in -h.
Signed-off-by: Oskari Pirhonen <xxc3ncoredxx@gmail.com>
---
options.c | 25 +++++++++++++++++--------
physlock.1 | 2 +-
2 files changed, 18 insertions(+), 9 deletions(-)
diff --git a/options.c b/options.c
index 6ec3634..ed21262 100644
--- a/options.c
+++ b/options.c
@@ -28,7 +28,16 @@ static options_t _options;
const options_t *options = (const options_t*) &_options;
void print_usage() {
- printf("usage: physlock [-dhLlmsv] [-p MSG]\n");
+ printf("Usage: physlock [-dhlLmsv] [-p MSG]\n");
+ printf("Lock all consoles / virtual terminals.\n\n");
+ printf(" -d Fork and detach physlock before prompting for authentication.\n");
+ printf(" -h Print brief usage information to standard output and exit.\n");
+ printf(" -l Only lock console switching and exit.\n");
+ printf(" -L Only enable (unlock) console switching and exit.\n");
+ printf(" -m Mute kernel messages on console while physlock is running.\n");
+ printf(" -p MSG Display MSG before the password prompt.\n");
+ printf(" -s Disable SysRq mechanism while physlock is running.\n");
+ printf(" -v Print version information to standard output and exit.\n");
}
void print_version() {
@@ -46,23 +55,20 @@ void parse_options(int argc, char **argv) {
_options.lock_switch = -1;
_options.mute_kernel_messages = 0;
- while ((opt = getopt(argc, argv, "dhLlmp:sv")) != -1) {
+ while ((opt = getopt(argc, argv, "dhlLmp:sv")) != -1) {
switch (opt) {
- case '?':
- print_usage();
- exit(1);
case 'd':
_options.detach = 1;
break;
case 'h':
print_usage();
exit(0);
- case 'L':
- _options.lock_switch = 0;
- break;
case 'l':
_options.lock_switch = 1;
break;
+ case 'L':
+ _options.lock_switch = 0;
+ break;
case 'm':
_options.mute_kernel_messages = 1;
break;
@@ -75,6 +81,9 @@ void parse_options(int argc, char **argv) {
case 'v':
print_version();
exit(0);
+ case '?':
+ print_usage();
+ exit(1);
}
}
}
diff --git a/physlock.1 b/physlock.1
index 32e8547..6243214 100644
--- a/physlock.1
+++ b/physlock.1
@@ -3,7 +3,7 @@
physlock \- lock all consoles / virtual terminals
.SH SYNOPSIS
.B physlock
-.RB [ \-dhLlmsv ]
+.RB [ \-dhlLmsv ]
.RB [ \-p
.IR MSG ]
.SH DESCRIPTION
--
2.32.0
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