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From 4b5d8d0f22ae61ceb45a25391354ba53b43ee992 Mon Sep 17 00:00:00 2001
From: Michal Schmidt <mschmidt@redhat.com>
Date: Thu, 6 Nov 2014 22:24:13 +0100
Subject: [PATCH] shutdown: fix arguments to /run/initramfs/shutdown
Our initrd interface specifies that the verb is in argv[1].
This is where systemd passes it to systemd-shutdown, but getopt
permutes argv[]. This confuses dracut's shutdown script:
Shutdown called with argument '--log-level'. Rebooting!
getopt can be convinced to not permute argv[] by having '-' as the first
character of optstring. Let's use it. This requires changing the way
non-option arguments (in our case, the verb) are processed.
This fixes a bug where the system would reboot instead of powering off.
---
src/core/shutdown.c | 17 +++++++++++------
1 file changed, 11 insertions(+), 6 deletions(-)
diff --git a/src/core/shutdown.c b/src/core/shutdown.c
index dd11ae3..48ed7fa 100644
--- a/src/core/shutdown.c
+++ b/src/core/shutdown.c
@@ -75,7 +75,9 @@ static int parse_argv(int argc, char *argv[]) {
assert(argc >= 1);
assert(argv);
- while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0)
+ /* "-" prevents getopt from permuting argv[] and moving the verb away
+ * from argv[1]. Our interface to initrd promises it'll be there. */
+ while ((c = getopt_long(argc, argv, "-", options, NULL)) >= 0)
switch (c) {
case ARG_LOG_LEVEL:
@@ -113,6 +115,13 @@ static int parse_argv(int argc, char *argv[]) {
break;
+ case '\001':
+ if (!arg_verb)
+ arg_verb = optarg;
+ else
+ log_error("Excess arguments, ignoring");
+ break;
+
case '?':
return -EINVAL;
@@ -120,15 +129,11 @@ static int parse_argv(int argc, char *argv[]) {
assert_not_reached("Unhandled option code.");
}
- if (optind >= argc) {
+ if (!arg_verb) {
log_error("Verb argument missing.");
return -EINVAL;
}
- arg_verb = argv[optind];
-
- if (optind + 1 < argc)
- log_error("Excess arguments, ignoring");
return 0;
}
--
2.1.3
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