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Diffstat (limited to 'src/systemctl/systemctl-compat-shutdown.c')
| -rw-r--r-- | src/systemctl/systemctl-compat-shutdown.c | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/src/systemctl/systemctl-compat-shutdown.c b/src/systemctl/systemctl-compat-shutdown.c new file mode 100644 index 0000000..881d00e --- /dev/null +++ b/src/systemctl/systemctl-compat-shutdown.c @@ -0,0 +1,159 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include <getopt.h> + +#include "alloc-util.h" +#include "pretty-print.h" +#include "reboot-util.h" +#include "systemctl-compat-shutdown.h" +#include "systemctl-sysv-compat.h" +#include "systemctl.h" +#include "terminal-util.h" + +static int shutdown_help(void) { + _cleanup_free_ char *link = NULL; + int r; + + r = terminal_urlify_man("shutdown", "8", &link); + if (r < 0) + return log_oom(); + + /* Note: if you are tempted to add new command line switches here, please do not. Let this + * compatibility command rest in peace. Its interface is not even owned by us as much as it is by + * sysvinit. If you add something new, add it to "systemctl halt", "systemctl reboot", "systemctl + * poweroff" instead. */ + + printf("%s [OPTIONS...] [TIME] [WALL...]\n" + "\n%sShut down the system.%s\n" + "\nOptions:\n" + " --help Show this help\n" + " -H --halt Halt the machine\n" + " -P --poweroff Power-off the machine\n" + " -r --reboot Reboot the machine\n" + " -h Equivalent to --poweroff, overridden by --halt\n" + " -k Don't halt/power-off/reboot, just send warnings\n" + " --no-wall Don't send wall message before halt/power-off/reboot\n" + " -c Cancel a pending shutdown\n" + " --show Show pending shutdown\n" + "\n%sThis is a compatibility interface, please use the more powerful 'systemctl reboot',\n" + "'systemctl poweroff', 'systemctl reboot' commands instead.%s\n" + "\nSee the %s for details.\n", + program_invocation_short_name, + ansi_highlight(), ansi_normal(), + ansi_highlight_red(), ansi_normal(), + link); + + return 0; +} + +int shutdown_parse_argv(int argc, char *argv[]) { + enum { + ARG_HELP = 0x100, + ARG_NO_WALL, + ARG_SHOW + }; + + static const struct option options[] = { + { "help", no_argument, NULL, ARG_HELP }, + { "halt", no_argument, NULL, 'H' }, + { "poweroff", no_argument, NULL, 'P' }, + { "reboot", no_argument, NULL, 'r' }, + { "kexec", no_argument, NULL, 'K' }, /* not documented extension */ + { "no-wall", no_argument, NULL, ARG_NO_WALL }, + { "show", no_argument, NULL, ARG_SHOW }, + {} + }; + + char **wall = NULL; + int c, r; + + assert(argc >= 0); + assert(argv); + + while ((c = getopt_long(argc, argv, "HPrhkKat:fFc", options, NULL)) >= 0) + switch (c) { + + case ARG_HELP: + return shutdown_help(); + + case 'H': + arg_action = ACTION_HALT; + break; + + case 'P': + arg_action = ACTION_POWEROFF; + break; + + case 'r': + if (kexec_loaded()) + arg_action = ACTION_KEXEC; + else + arg_action = ACTION_REBOOT; + break; + + case 'K': + arg_action = ACTION_KEXEC; + break; + + case 'h': + if (arg_action != ACTION_HALT) + arg_action = ACTION_POWEROFF; + break; + + case 'k': + arg_dry_run = true; + break; + + case ARG_NO_WALL: + arg_no_wall = true; + break; + + case 'a': + case 't': /* Note that we also ignore any passed argument to -t, not just the -t itself */ + case 'f': + case 'F': + /* Compatibility nops */ + break; + + case 'c': + arg_action = ACTION_CANCEL_SHUTDOWN; + break; + + case ARG_SHOW: + arg_action = ACTION_SHOW_SHUTDOWN; + break; + + case '?': + return -EINVAL; + + default: + assert_not_reached(); + } + + if (argc > optind && arg_action != ACTION_CANCEL_SHUTDOWN) { + r = parse_shutdown_time_spec(argv[optind], &arg_when); + if (r < 0) { + log_error("Failed to parse time specification: %s", argv[optind]); + return r; + } + } else + arg_when = now(CLOCK_REALTIME) + USEC_PER_MINUTE; + + if (argc > optind && arg_action == ACTION_CANCEL_SHUTDOWN) + /* No time argument for shutdown cancel */ + wall = argv + optind; + else if (argc > optind + 1) + /* We skip the time argument */ + wall = argv + optind + 1; + + if (wall) { + char **copy = strv_copy(wall); + if (!copy) + return log_oom(); + strv_free_and_replace(arg_wall, copy); + } + + optind = argc; + + return 1; +} |