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oomd: check number of arguments, add --version, fix indentation

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This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2020-10-15 15:03:07 +02:00
parent 69c0807432
commit ddc543bed8
1 changed files with 28 additions and 18 deletions
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46
src/oom/oomd.c
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@ -43,25 +43,28 @@ static int help(void) {
return log_oom();
printf("%s [OPTIONS...]\n\n"
"Run the userspace out-of-memory (OOM) killer.\n\n"
" -h --help Show this help\n"
" --dry-run Log write/destructive actions instead of doing them\n"
"\nSee the %s for details.\n"
, program_invocation_short_name
, link
);
"Run the userspace out-of-memory (OOM) killer.\n\n"
" -h --help Show this help\n"
" --version Show package version\n"
" --dry-run Only print destructive actions instead of doing them\n"
"\nSee the %s for details.\n"
, program_invocation_short_name
, link
);
return 0;
}
static int parse_argv(int argc, char *argv[]) {
enum {
ARG_VERSION = 0x100,
ARG_DRY_RUN,
};
static const struct option options[] = {
{ "help", no_argument, NULL, 'h' },
{ "dry-run", no_argument, NULL, ARG_DRY_RUN },
{ "help", no_argument, NULL, 'h' },
{ "version", no_argument, NULL, ARG_VERSION },
{ "dry-run", no_argument, NULL, ARG_DRY_RUN },
{}
};
@ -74,20 +77,27 @@ static int parse_argv(int argc, char *argv[]) {
switch (c) {
case 'h':
return help();
case 'h':
return help();
case ARG_DRY_RUN:
arg_dry_run = true;
break;
case ARG_VERSION:
return version();
case '?':
return -EINVAL;
case ARG_DRY_RUN:
arg_dry_run = true;
break;
default:
assert_not_reached("Invalid option passed.");
case '?':
return -EINVAL;
default:
assert_not_reached("Unknown option code.");
}
if (optind < argc)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
"This program takes no arguments.");
return 1;
}