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openrc-shutdown: add --single option and clean up option processing

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This commit is contained in:
William Hubbs 2017-06-05 15:49:22 -05:00
parent 1801561c2d
commit ee886c4482
1 changed files with 12 additions and 4 deletions
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16
src/rc/openrc-shutdown.c
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@ -37,7 +37,7 @@
const char *applet = NULL; const char *applet = NULL;
const char *extraopts = NULL; const char *extraopts = NULL;
const char *getoptstring = "dDHKpRrw" getoptstring_COMMON; const char *getoptstring = "dDHKpRrsw" getoptstring_COMMON;
const struct option longopts[] = { const struct option longopts[] = {
{ "no-write", no_argument, NULL, 'd'}, { "no-write", no_argument, NULL, 'd'},
{ "dry-run", no_argument, NULL, 'D'}, { "dry-run", no_argument, NULL, 'D'},
@ -46,6 +46,7 @@ const struct option longopts[] = {
{ "poweroff", no_argument, NULL, 'p'}, { "poweroff", no_argument, NULL, 'p'},
{ "reexec", no_argument, NULL, 'R'}, { "reexec", no_argument, NULL, 'R'},
{ "reboot", no_argument, NULL, 'r'}, { "reboot", no_argument, NULL, 'r'},
{ "single", no_argument, NULL, 's'},
{ "write-only", no_argument, NULL, 'w'}, { "write-only", no_argument, NULL, 'w'},
longopts_COMMON longopts_COMMON
}; };
@ -57,12 +58,13 @@ const char * const longopts_help[] = {
"power off the system", "power off the system",
"re-execute init (use after upgrading)", "re-execute init (use after upgrading)",
"reboot the system", "reboot the system",
"single user mode",
"write wtmp boot record and exit", "write wtmp boot record and exit",
longopts_help_COMMON longopts_help_COMMON
}; };
const char *usagestring = NULL; const char *usagestring = NULL;
const char *exclusive = "Select one of " const char *exclusive = "Select one of "
"--halt, --kexec, --poweroff, --reexec or --reboot"; "--halt, --kexec, --poweroff, --reexec, --reboot, --single or --write-only";
static bool do_dryrun = false; static bool do_dryrun = false;
static bool do_halt = false; static bool do_halt = false;
@ -70,6 +72,7 @@ static bool do_kexec = false;
static bool do_poweroff = false; static bool do_poweroff = false;
static bool do_reboot = false; static bool do_reboot = false;
static bool do_reexec = false; static bool do_reexec = false;
static bool do_single = false;
static bool do_wtmp = true; static bool do_wtmp = true;
static bool do_wtmp_only = false; static bool do_wtmp_only = false;
@ -132,15 +135,20 @@ int main(int argc, char **argv)
do_reboot = true; do_reboot = true;
cmd_count++; cmd_count++;
break; break;
case 's':
do_single = true;
cmd_count++;
break;
case 'w': case 'w':
do_wtmp_only = true; do_wtmp_only = true;
cmd_count++;
break; break;
case_RC_COMMON_GETOPT case_RC_COMMON_GETOPT
} }
} }
if (geteuid() != 0 && ! do_dryrun) if (geteuid() != 0 && ! do_dryrun)
eerrorx("%s: you must be root\n", applet); eerrorx("%s: you must be root\n", applet);
if (cmd_count > 1) { if (cmd_count != 1) {
eerror("%s: %s\n", applet, exclusive); eerror("%s: %s\n", applet, exclusive);
usage(EXIT_FAILURE); usage(EXIT_FAILURE);
} }
@ -156,7 +164,7 @@ int main(int argc, char **argv)
send_cmd("reexec"); send_cmd("reexec");
else if (do_wtmp_only) else if (do_wtmp_only)
log_wtmp("shutdown", "~~", 0, RUN_LVL, "~~"); log_wtmp("shutdown", "~~", 0, RUN_LVL, "~~");
else else if (do_single)
send_cmd("single"); send_cmd("single");
return 0; return 0;
} }