From 1ece16bfcd0ab71d2f9fe17a75ee6184e0fa4828 Mon Sep 17 00:00:00 2001
From: William Hubbs <w.d.hubbs@gmail.com>
Date: Mon, 22 May 2017 12:42:37 -0500
Subject: openrc-shutdown: add dry-run option
---
src/rc/openrc-shutdown.c | 31 ++++++++++++++++++++-----------
1 file changed, 20 insertions(+), 11 deletions(-)
(limited to 'src/rc')
diff --git a/src/rc/openrc-shutdown.c b/src/rc/openrc-shutdown.c
index 0ed77445..ecb251a8 100644
--- a/src/rc/openrc-shutdown.c
+++ b/src/rc/openrc-shutdown.c
@@ -35,8 +35,9 @@
const char *applet = NULL;
const char *extraopts = NULL;
-const char *getoptstring = "HkpRr" getoptstring_COMMON;
+const char *getoptstring = "dHkpRr" getoptstring_COMMON;
const struct option longopts[] = {
+ { "dry-run", no_argument, NULL, 'd'},
{ "halt", no_argument, NULL, 'H'},
{ "kexec", no_argument, NULL, 'k'},
{ "poweroff", no_argument, NULL, 'p'},
@@ -45,6 +46,7 @@ const struct option longopts[] = {
longopts_COMMON
};
const char * const longopts_help[] = {
+ "print actions instead of executing them",
"halt the system",
"reboot the system using kexec",
"power off the system",
@@ -56,13 +58,16 @@ const char *usagestring = NULL;
const char *exclusive = "Select one of "
"--halt, --kexec, --poweroff, --reexec or --reboot";
-static void send_cmd(const char *cmd)
+static void send_cmd(const char *cmd, bool dryrun)
{
FILE *fifo;
size_t ignored;
+ if (dryrun) {
+ einfo("Would send %s to init", cmd);
+ return;
+ }
fifo = fopen(RC_INIT_FIFO, "w");
-
if (!fifo) {
perror("fopen");
return;
@@ -78,6 +83,7 @@ int main(int argc, char **argv)
{
int opt;
int cmd_count = 0;
+ bool do_dryrun = false;
bool do_halt = false;
bool do_kexec = false;
bool do_poweroff = false;
@@ -85,12 +91,13 @@ int main(int argc, char **argv)
bool do_reexec = false;
applet = basename_c(argv[0]);
-if (geteuid() != 0)
- eerrorx("%s: you must be root\n", applet);
while ((opt = getopt_long(argc, argv, getoptstring,
longopts, (int *) 0)) != -1)
{
switch (opt) {
+ case 'd':
+ do_dryrun = true;
+ break;
case 'H':
do_halt = true;
cmd_count++;
@@ -114,21 +121,23 @@ if (geteuid() != 0)
case_RC_COMMON_GETOPT
}
}
+if (geteuid() != 0 && ! do_dryrun)
+ eerrorx("%s: you must be root\n", applet);
if (cmd_count > 1) {
eerror("%s: %s\n", applet, exclusive);
usage(EXIT_FAILURE);
}
if (do_halt)
- send_cmd("halt");
+ send_cmd("halt", do_dryrun);
else if (do_kexec)
- send_cmd("kexec");
+ send_cmd("kexec", do_dryrun);
else if (do_poweroff)
- send_cmd("poweroff");
+ send_cmd("poweroff", do_dryrun);
else if (do_reboot)
- send_cmd("reboot");
+ send_cmd("reboot", do_dryrun);
else if (do_reexec)
- send_cmd("reexec");
+ send_cmd("reexec", do_dryrun);
else
- send_cmd("single");
+ send_cmd("single", do_dryrun);
return 0;
}
--
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