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agetty: add compile time features to --version output 

This command has a lot of compile time #ifdef code.  It is time to add
feature listing to --version output so understanding command behavior is
easier.

Proposed-by: Karel Zak <kzak@redhat.com>
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
This commit is contained in:
Sami Kerola 2017-08-05 16:46:55 +01:00
parent 11841430c9
commit 63d94613a8
No known key found for this signature in database
GPG Key ID: A9553245FDE9B739
1 changed files with 45 additions and 1 deletions
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46
term-utils/agetty.c
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@ -617,6 +617,50 @@ static void login_options_to_argv(char *argv[], int *argc,
*argc = i;
}
static void output_version(void)
{
static const char *features[] = {
#ifdef DEBUGGING
"debug",
#endif
#ifdef CRTSCTS
"flow control",
#endif
#ifdef KDGKBLED
"hints",
#endif
#ifdef ISSUE
"issue",
#endif
#ifdef KDGKBMODE
"keyboard mode",
#endif
#ifdef USE_PLYMOUTH_SUPPORT
"plymouth",
#endif
#ifdef AGETTY_RELOAD
"reload",
#endif
#ifdef USE_SYSLOG
"syslog",
#endif
#ifdef HAVE_WIDECHAR
"widechar",
#endif
NULL
};
unsigned int i;
printf( _("%s from %s"), program_invocation_short_name, PACKAGE_STRING);
fputs(" (", stdout);
for (i = 0; features[i]; i++) {
if (0 < i)
fputs(", ", stdout);
printf("%s", features[i]);
}
fputs(")\n", stdout);
}
#define is_speed(str) (strlen((str)) == strspn((str), "0123456789,"))
/* Parse command-line arguments. */
@ -790,7 +834,7 @@ static void parse_args(int argc, char **argv, struct options *op)
case LIST_SPEEDS_OPTION:
list_speeds();
case VERSION_OPTION:
printf(UTIL_LINUX_VERSION);
output_version();
exit(EXIT_SUCCESS);
case HELP_OPTION:
usage();