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cryptsetup: add a terse help
author
Lennart Poettering
<lennart@poettering.net>
Fri, 25 Feb 2011 01:56:27 +0000
(
02:56
+0100)
committer
Lennart Poettering
<lennart@poettering.net>
Fri, 25 Feb 2011 01:56:27 +0000
(
02:56
+0100)
src/cryptsetup.c
patch
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diff --git
a/src/cryptsetup.c
b/src/cryptsetup.c
index 506ce9b5c9086bf3d4fec4cd0431affc5bc139ba..989734be1bc44badb3ca130ea14daaece34d1afd 100644
(file)
--- a/
src/cryptsetup.c
+++ b/
src/cryptsetup.c
@@
-207,6
+207,17
@@
finish:
return mp;
}
return mp;
}
+static int help(void) {
+
+ printf("%s attach VOLUME SOURCEDEVICE [PASSWORD] [OPTIONS]\n"
+ "%s detach VOLUME\n\n"
+ "Attaches or detaches an encrypted block device.\n",
+ program_invocation_short_name,
+ program_invocation_short_name);
+
+ return 0;
+}
+
int main(int argc, char *argv[]) {
int r = EXIT_FAILURE;
struct crypt_device *cd = NULL;
int main(int argc, char *argv[]) {
int r = EXIT_FAILURE;
struct crypt_device *cd = NULL;
@@
-214,6
+225,11
@@
int main(int argc, char *argv[]) {
const char *cipher = NULL, *cipher_mode = NULL, *hash = NULL, *name = NULL;
char *description = NULL, *name_buffer = NULL, *mount_point = NULL;
const char *cipher = NULL, *cipher_mode = NULL, *hash = NULL, *name = NULL;
char *description = NULL, *name_buffer = NULL, *mount_point = NULL;
+ if (argc <= 1) {
+ help();
+ return EXIT_SUCCESS;
+ }
+
if (argc < 3) {
log_error("This program requires at least two arguments.");
return EXIT_FAILURE;
if (argc < 3) {
log_error("This program requires at least two arguments.");
return EXIT_FAILURE;