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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:35:18 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:35:18 +0000 |
commit | b750101eb236130cf056c675997decbac904cc49 (patch) | |
tree | a5df1a06754bdd014cb975c051c83b01c9a97532 /src/systemctl/systemctl-compat-runlevel.c | |
parent | Initial commit. (diff) | |
download | systemd-upstream.tar.xz systemd-upstream.zip |
Adding upstream version 252.22.upstream/252.22upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/systemctl/systemctl-compat-runlevel.c | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/src/systemctl/systemctl-compat-runlevel.c b/src/systemctl/systemctl-compat-runlevel.c new file mode 100644 index 0000000..04b6b76 --- /dev/null +++ b/src/systemctl/systemctl-compat-runlevel.c @@ -0,0 +1,82 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include <getopt.h> + +#include "alloc-util.h" +#include "pretty-print.h" +#include "systemctl-compat-runlevel.h" +#include "systemctl.h" +#include "terminal-util.h" +#include "utmp-wtmp.h" + +static int runlevel_help(void) { + _cleanup_free_ char *link = NULL; + int r; + + r = terminal_urlify_man("runlevel", "8", &link); + if (r < 0) + return log_oom(); + + printf("%s [OPTIONS...]\n" + "\n%sPrints the previous and current runlevel of the init system.%s\n" + "\nOptions:\n" + " --help Show this help\n" + "\nSee the %s for details.\n", + program_invocation_short_name, + ansi_highlight(), + ansi_normal(), + link); + + return 0; +} + +int runlevel_parse_argv(int argc, char *argv[]) { + enum { + ARG_HELP = 0x100, + }; + + static const struct option options[] = { + { "help", no_argument, NULL, ARG_HELP }, + {} + }; + + int c; + + assert(argc >= 0); + assert(argv); + + while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0) + switch (c) { + + case ARG_HELP: + return runlevel_help(); + + case '?': + return -EINVAL; + + default: + assert_not_reached(); + } + + if (optind < argc) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Too many arguments."); + + return 1; +} + +int runlevel_main(void) { + int r, runlevel, previous; + + r = utmp_get_runlevel(&runlevel, &previous); + if (r < 0) { + puts("unknown"); + return r; + } + + printf("%c %c\n", + previous <= 0 ? 'N' : previous, + runlevel <= 0 ? 'N' : runlevel); + + return 0; +} |